diff options
| author | Kartik Agaram <vc@akkartik.com> | 2021-01-14 14:03:32 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2021-01-14 14:03:32 -0800 |
| commit | 20d6be52405130930fde9ca5bb5e95131ba4e659 (patch) | |
| tree | 82ba4a132db206ef9adc2145d9dfd5aacd34da65 /html/baremetal | |
| parent | 232b4a1511a63a2c76ee233e7e172f8caa8232bb (diff) | |
| download | mu-20d6be52405130930fde9ca5bb5e95131ba4e659.tar.gz | |
7520
Diffstat (limited to 'html/baremetal')
25 files changed, 970 insertions, 686 deletions
diff --git a/html/baremetal/101screen.subx.html b/html/baremetal/101screen.subx.html index 038e8f78..1f204a59 100644 --- a/html/baremetal/101screen.subx.html +++ b/html/baremetal/101screen.subx.html @@ -56,50 +56,52 @@ if ('onhashchange' in window) { <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Primitives for screen control.</span> <span id="L2" class="LineNr"> 2 </span> -<span id="L3" class="LineNr"> 3 </span><span class="subxFunction">pixel</span>: <span class="subxComment"># screen: (addr screen), x: int, y: int, color: int</span> -<span id="L4" class="LineNr"> 4 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L5" class="LineNr"> 5 </span> 55/push-ebp -<span id="L6" class="LineNr"> 6 </span> 89/<- %ebp 4/r32/esp -<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L8" class="LineNr"> 8 </span> 50/push-eax -<span id="L9" class="LineNr"> 9 </span> 51/push-ecx -<span id="L10" class="LineNr">10 </span> <span class="subxComment"># ecx = screen</span> -<span id="L11" class="LineNr">11 </span> 8b/-> *(ebp+8) 1/r32/ecx -<span id="L12" class="LineNr">12 </span> 81 7/subop/compare %ecx 0/imm32 -<span id="L13" class="LineNr">13 </span> { -<span id="L14" class="LineNr">14 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 -<span id="L15" class="LineNr">15 </span> <span class="subxComment"># bounds checks</span> -<span id="L16" class="LineNr">16 </span> 8b/-> *(ebp+0xc) 0/r32/eax -<span id="L17" class="LineNr">17 </span> 3d/compare-eax-and 0/imm32 -<span id="L18" class="LineNr">18 </span> 7c/jump-if-< $pixel:end/disp8 -<span id="L19" class="LineNr">19 </span> 3d/compare-eax-and 0x400/imm32/1024 -<span id="L20" class="LineNr">20 </span> 7d/jump-if->= $pixel:end/disp8 -<span id="L21" class="LineNr">21 </span> 8b/-> *(ebp+0x10) 0/r32/eax -<span id="L22" class="LineNr">22 </span> 3d/compare-eax-and 0/imm32 -<span id="L23" class="LineNr">23 </span> 7c/jump-if-< $pixel:end/disp8 -<span id="L24" class="LineNr">24 </span> 3d/compare-eax-and 0x300/imm32/768 -<span id="L25" class="LineNr">25 </span> 7d/jump-if->= $pixel:end/disp8 -<span id="L26" class="LineNr">26 </span> <span class="subxComment"># eax = y*1024 + x</span> -<span id="L27" class="LineNr">27 </span> 8b/-> *(ebp+0x10) 0/r32/eax -<span id="L28" class="LineNr">28 </span> c1/shift 4/subop/left %eax 0xa/imm8 -<span id="L29" class="LineNr">29 </span> 03/add-> *(ebp+0xc) 0/r32/eax -<span id="L30" class="LineNr">30 </span> <span class="subxComment"># eax += location of frame buffer</span> -<span id="L31" class="LineNr">31 </span> 03/add-> *0x7f28 0/r32/eax -<span id="L32" class="LineNr">32 </span> <span class="subxComment"># *eax = color</span> -<span id="L33" class="LineNr">33 </span> 8b/-> *(ebp+0x14) 1/r32/ecx -<span id="L34" class="LineNr">34 </span> 88/byte<- *eax 1/r32/CL -<span id="L35" class="LineNr">35 </span> <span class="subxComment"># return</span> -<span id="L36" class="LineNr">36 </span> eb $pixel:end/disp8 -<span id="L37" class="LineNr">37 </span> } -<span id="L38" class="LineNr">38 </span> <span class="subxComment"># TODO: fake screen</span> -<span id="L39" class="LineNr">39 </span><span class="Constant">$pixel:end</span>: -<span id="L40" class="LineNr">40 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L41" class="LineNr">41 </span> 59/pop-to-ecx -<span id="L42" class="LineNr">42 </span> 58/pop-to-eax -<span id="L43" class="LineNr">43 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L44" class="LineNr">44 </span> 89/<- %esp 5/r32/ebp -<span id="L45" class="LineNr">45 </span> 5d/pop-to-ebp -<span id="L46" class="LineNr">46 </span> c3/return +<span id="L3" class="LineNr"> 3 </span>== code +<span id="L4" class="LineNr"> 4 </span> +<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">pixel</span>: <span class="subxComment"># screen: (addr screen), x: int, y: int, color: int</span> +<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L7" class="LineNr"> 7 </span> 55/push-ebp +<span id="L8" class="LineNr"> 8 </span> 89/<- %ebp 4/r32/esp +<span id="L9" class="LineNr"> 9 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L10" class="LineNr">10 </span> 50/push-eax +<span id="L11" class="LineNr">11 </span> 51/push-ecx +<span id="L12" class="LineNr">12 </span> <span class="subxComment"># ecx = screen</span> +<span id="L13" class="LineNr">13 </span> 8b/-> *(ebp+8) 1/r32/ecx +<span id="L14" class="LineNr">14 </span> 81 7/subop/compare %ecx 0/imm32 +<span id="L15" class="LineNr">15 </span> { +<span id="L16" class="LineNr">16 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 +<span id="L17" class="LineNr">17 </span> <span class="subxComment"># bounds checks</span> +<span id="L18" class="LineNr">18 </span> 8b/-> *(ebp+0xc) 0/r32/eax +<span id="L19" class="LineNr">19 </span> 3d/compare-eax-and 0/imm32 +<span id="L20" class="LineNr">20 </span> 7c/jump-if-< $pixel:end/disp8 +<span id="L21" class="LineNr">21 </span> 3d/compare-eax-and 0x400/imm32/1024 +<span id="L22" class="LineNr">22 </span> 7d/jump-if->= $pixel:end/disp8 +<span id="L23" class="LineNr">23 </span> 8b/-> *(ebp+0x10) 0/r32/eax +<span id="L24" class="LineNr">24 </span> 3d/compare-eax-and 0/imm32 +<span id="L25" class="LineNr">25 </span> 7c/jump-if-< $pixel:end/disp8 +<span id="L26" class="LineNr">26 </span> 3d/compare-eax-and 0x300/imm32/768 +<span id="L27" class="LineNr">27 </span> 7d/jump-if->= $pixel:end/disp8 +<span id="L28" class="LineNr">28 </span> <span class="subxComment"># eax = y*1024 + x</span> +<span id="L29" class="LineNr">29 </span> 8b/-> *(ebp+0x10) 0/r32/eax +<span id="L30" class="LineNr">30 </span> c1/shift 4/subop/left %eax 0xa/imm8 +<span id="L31" class="LineNr">31 </span> 03/add-> *(ebp+0xc) 0/r32/eax +<span id="L32" class="LineNr">32 </span> <span class="subxComment"># eax += location of frame buffer</span> +<span id="L33" class="LineNr">33 </span> 03/add-> *0x7f28 0/r32/eax +<span id="L34" class="LineNr">34 </span> <span class="subxComment"># *eax = color</span> +<span id="L35" class="LineNr">35 </span> 8b/-> *(ebp+0x14) 1/r32/ecx +<span id="L36" class="LineNr">36 </span> 88/byte<- *eax 1/r32/CL +<span id="L37" class="LineNr">37 </span> <span class="subxComment"># return</span> +<span id="L38" class="LineNr">38 </span> eb $pixel:end/disp8 +<span id="L39" class="LineNr">39 </span> } +<span id="L40" class="LineNr">40 </span> <span class="subxComment"># TODO: fake screen</span> +<span id="L41" class="LineNr">41 </span><span class="Constant">$pixel:end</span>: +<span id="L42" class="LineNr">42 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L43" class="LineNr">43 </span> 59/pop-to-ecx +<span id="L44" class="LineNr">44 </span> 58/pop-to-eax +<span id="L45" class="LineNr">45 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L46" class="LineNr">46 </span> 89/<- %esp 5/r32/ebp +<span id="L47" class="LineNr">47 </span> 5d/pop-to-ebp +<span id="L48" class="LineNr">48 </span> c3/return </pre> </body> </html> diff --git a/html/baremetal/102keyboard.subx.html b/html/baremetal/102keyboard.subx.html index cc092133..660d74fb 100644 --- a/html/baremetal/102keyboard.subx.html +++ b/html/baremetal/102keyboard.subx.html @@ -56,46 +56,49 @@ if ('onhashchange' in window) { <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="subxComment"># check keyboard for a key</span> <span id="L2" class="LineNr"> 2 </span><span class="subxComment"># return 0 on no keypress or unrecognized key</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxFunction">read-key</span>: <span class="subxComment"># kbd: (addr keyboard) -> result/eax: byte</span> -<span id="L4" class="LineNr"> 4 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L5" class="LineNr"> 5 </span> 55/push-ebp -<span id="L6" class="LineNr"> 6 </span> 89/<- %ebp 4/r32/esp -<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L8" class="LineNr"> 8 </span> 51/push-ecx -<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># result = 0</span> -<span id="L10" class="LineNr">10 </span> b8/copy-to-eax 0/imm32 -<span id="L11" class="LineNr">11 </span> <span class="subxComment"># ecx = keyboard</span> -<span id="L12" class="LineNr">12 </span> 8b/-> *(ebp+8) 1/r32/ecx -<span id="L13" class="LineNr">13 </span> 81 7/subop/compare %ecx 0/imm32 -<span id="L14" class="LineNr">14 </span> { -<span id="L15" class="LineNr">15 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 -<span id="L16" class="LineNr">16 </span> <span class="subxComment"># var read/ecx: byte = keyboard buffer's read index</span> -<span id="L17" class="LineNr">17 </span> 8b/-> *0x7dcc 1/r32/CL <span class="subxComment"># keyboard-buffer-read</span> -<span id="L18" class="LineNr">18 </span> <span class="subxComment"># var next-key/eax: byte = *(keyboard buffer + ecx)</span> -<span id="L19" class="LineNr">19 </span> 8a/byte-> *(ecx+0x7dd0) 0/r32/AL <span class="subxComment"># keyboard-buffer-data</span> -<span id="L20" class="LineNr">20 </span> <span class="subxComment"># if (next-key != 0) lock and remove from keyboard-buffer</span> -<span id="L21" class="LineNr">21 </span> 81 7/subop/compare %eax 0/imm32 -<span id="L22" class="LineNr">22 </span> { -<span id="L23" class="LineNr">23 </span> 74/jump-if-= <span class="Constant">break</span>/disp8 -<span id="L24" class="LineNr">24 </span> <span class="subxComment"># TODO: add some instructions in this block to SubX if we ever want to</span> -<span id="L25" class="LineNr">25 </span> <span class="subxComment"># use bootstrap on baremetal programs</span> -<span id="L26" class="LineNr">26 </span> fa/disable-interrupts -<span id="L27" class="LineNr">27 </span> c6 0/subop/copy-byte *(ecx+0x7dd0) 0/imm8 -<span id="L28" class="LineNr">28 </span> ff 0/subop/increment *0x7dcc <span class="subxComment"># keyboard-buffer-read</span> -<span id="L29" class="LineNr">29 </span> 81 4/subop/and *0x7dcc 0xf/imm32 <span class="subxComment"># keyboard-buffer-read</span> -<span id="L30" class="LineNr">30 </span> fb/enable-interrupts -<span id="L31" class="LineNr">31 </span> } -<span id="L32" class="LineNr">32 </span> <span class="subxComment"># return</span> -<span id="L33" class="LineNr">33 </span> eb $read-key:end/disp8 -<span id="L34" class="LineNr">34 </span> } -<span id="L35" class="LineNr">35 </span> <span class="subxComment"># TODO: fake keyboard</span> -<span id="L36" class="LineNr">36 </span><span class="Constant">$read-key:end</span>: -<span id="L37" class="LineNr">37 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L38" class="LineNr">38 </span> 59/pop-to-ecx -<span id="L39" class="LineNr">39 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L40" class="LineNr">40 </span> 89/<- %esp 5/r32/ebp -<span id="L41" class="LineNr">41 </span> 5d/pop-to-ebp -<span id="L42" class="LineNr">42 </span> c3/return +<span id="L3" class="LineNr"> 3 </span> +<span id="L4" class="LineNr"> 4 </span>== code +<span id="L5" class="LineNr"> 5 </span> +<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">read-key</span>: <span class="subxComment"># kbd: (addr keyboard) -> result/eax: byte</span> +<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L8" class="LineNr"> 8 </span> 55/push-ebp +<span id="L9" class="LineNr"> 9 </span> 89/<- %ebp 4/r32/esp +<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L11" class="LineNr">11 </span> 51/push-ecx +<span id="L12" class="LineNr">12 </span> <span class="subxComment"># result = 0</span> +<span id="L13" class="LineNr">13 </span> b8/copy-to-eax 0/imm32 +<span id="L14" class="LineNr">14 </span> <span class="subxComment"># ecx = keyboard</span> +<span id="L15" class="LineNr">15 </span> 8b/-> *(ebp+8) 1/r32/ecx +<span id="L16" class="LineNr">16 </span> 81 7/subop/compare %ecx 0/imm32 +<span id="L17" class="LineNr">17 </span> { +<span id="L18" class="LineNr">18 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 +<span id="L19" class="LineNr">19 </span> <span class="subxComment"># var read/ecx: byte = keyboard buffer's read index</span> +<span id="L20" class="LineNr">20 </span> 8b/-> *0x7dcc 1/r32/CL <span class="subxComment"># keyboard-buffer-read</span> +<span id="L21" class="LineNr">21 </span> <span class="subxComment"># var next-key/eax: byte = *(keyboard buffer + ecx)</span> +<span id="L22" class="LineNr">22 </span> 8a/byte-> *(ecx+0x7dd0) 0/r32/AL <span class="subxComment"># keyboard-buffer-data</span> +<span id="L23" class="LineNr">23 </span> <span class="subxComment"># if (next-key != 0) lock and remove from keyboard-buffer</span> +<span id="L24" class="LineNr">24 </span> 81 7/subop/compare %eax 0/imm32 +<span id="L25" class="LineNr">25 </span> { +<span id="L26" class="LineNr">26 </span> 74/jump-if-= <span class="Constant">break</span>/disp8 +<span id="L27" class="LineNr">27 </span> <span class="subxComment"># TODO: add some instructions in this block to SubX if we ever want to</span> +<span id="L28" class="LineNr">28 </span> <span class="subxComment"># use bootstrap on baremetal programs</span> +<span id="L29" class="LineNr">29 </span> fa/disable-interrupts +<span id="L30" class="LineNr">30 </span> c6 0/subop/copy-byte *(ecx+0x7dd0) 0/imm8 +<span id="L31" class="LineNr">31 </span> ff 0/subop/increment *0x7dcc <span class="subxComment"># keyboard-buffer-read</span> +<span id="L32" class="LineNr">32 </span> 81 4/subop/and *0x7dcc 0xf/imm32 <span class="subxComment"># keyboard-buffer-read</span> +<span id="L33" class="LineNr">33 </span> fb/enable-interrupts +<span id="L34" class="LineNr">34 </span> } +<span id="L35" class="LineNr">35 </span> <span class="subxComment"># return</span> +<span id="L36" class="LineNr">36 </span> eb $read-key:end/disp8 +<span id="L37" class="LineNr">37 </span> } +<span id="L38" class="LineNr">38 </span> <span class="subxComment"># TODO: fake keyboard</span> +<span id="L39" class="LineNr">39 </span><span class="Constant">$read-key:end</span>: +<span id="L40" class="LineNr">40 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L41" class="LineNr">41 </span> 59/pop-to-ecx +<span id="L42" class="LineNr">42 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L43" class="LineNr">43 </span> 89/<- %esp 5/r32/ebp +<span id="L44" class="LineNr">44 </span> 5d/pop-to-ebp +<span id="L45" class="LineNr">45 </span> c3/return </pre> </body> </html> diff --git a/html/baremetal/103grapheme.subx.html b/html/baremetal/103grapheme.subx.html index 13dc6073..77e1d901 100644 --- a/html/baremetal/103grapheme.subx.html +++ b/html/baremetal/103grapheme.subx.html @@ -55,117 +55,121 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/103grapheme.subx'>https://github.com/akkartik/mu/blob/main/baremetal/103grapheme.subx</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxFunction">draw-grapheme</span>: <span class="subxComment"># screen: (addr screen), g: grapheme, x: int, y: int, color: int</span> -<span id="L2" class="LineNr"> 2 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L3" class="LineNr"> 3 </span> 55/push-ebp -<span id="L4" class="LineNr"> 4 </span> 89/<- %ebp 4/r32/esp -<span id="L5" class="LineNr"> 5 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L6" class="LineNr"> 6 </span> 50/push-eax -<span id="L7" class="LineNr"> 7 </span> 51/push-ecx -<span id="L8" class="LineNr"> 8 </span> 52/push-edx -<span id="L9" class="LineNr"> 9 </span> 53/push-ebx -<span id="L10" class="LineNr"> 10 </span> 56/push-esi -<span id="L11" class="LineNr"> 11 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> -<span id="L12" class="LineNr"> 12 </span> <span class="subxComment"># var letter-bitmap/esi = font[g]</span> -<span id="L13" class="LineNr"> 13 </span> 8b/-> *(ebp+0xc) 6/r32/esi -<span id="L14" class="LineNr"> 14 </span> c1 4/subop/shift-left %esi 4/imm8 -<span id="L15" class="LineNr"> 15 </span> 8d/copy-address *(esi+0x8800) 6/r32/esi <span class="subxComment"># font-start</span> -<span id="L16" class="LineNr"> 16 </span> <span class="subxComment"># if (letter-bitmap >= 0x9000) return # characters beyond ASCII currently not supported</span> -<span id="L17" class="LineNr"> 17 </span> 81 7/subop/compare %esi 0x9000/imm32 -<span id="L18" class="LineNr"> 18 </span> 7d/jump-if->= $draw-grapheme:end/disp8 -<span id="L19" class="LineNr"> 19 </span> <span class="subxComment"># edx = y</span> -<span id="L20" class="LineNr"> 20 </span> 8b/-> *(ebp+0x14) 2/r32/edx -<span id="L21" class="LineNr"> 21 </span> <span class="subxComment"># var ymax/ebx: int = y + 16</span> -<span id="L22" class="LineNr"> 22 </span> 8b/-> *(ebp+0x14) 3/r32/ebx -<span id="L23" class="LineNr"> 23 </span> 81 0/subop/add %ebx 0x10/imm32 -<span id="L24" class="LineNr"> 24 </span> { -<span id="L25" class="LineNr"> 25 </span> <span class="subxComment"># if (y >= ymax) break</span> -<span id="L26" class="LineNr"> 26 </span> 39/compare %edx 3/r32/ebx -<span id="L27" class="LineNr"> 27 </span> 7d/jump-if->= <span class="Constant">break</span>/disp8 -<span id="L28" class="LineNr"> 28 </span> <span class="subxComment"># eax = x + 7</span> -<span id="L29" class="LineNr"> 29 </span> 8b/-> *(ebp+0x10) 0/r32/eax -<span id="L30" class="LineNr"> 30 </span> 81 0/subop/add %eax 7/imm32 -<span id="L31" class="LineNr"> 31 </span> <span class="subxComment"># var xmin/ecx: int = x</span> -<span id="L32" class="LineNr"> 32 </span> 8b/-> *(ebp+0x10) 1/r32/ecx -<span id="L33" class="LineNr"> 33 </span> <span class="subxComment"># var row-bitmap/ebx: int = *letter-bitmap</span> -<span id="L34" class="LineNr"> 34 </span> 53/push-ebx -<span id="L35" class="LineNr"> 35 </span> 8b/-> *esi 3/r32/ebx -<span id="L36" class="LineNr"> 36 </span> { -<span id="L37" class="LineNr"> 37 </span> <span class="subxComment"># if (x < xmin) break</span> -<span id="L38" class="LineNr"> 38 </span> 39/compare %eax 1/r32/ecx -<span id="L39" class="LineNr"> 39 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 -<span id="L40" class="LineNr"> 40 </span> <span class="subxComment"># shift LSB from row-bitmap into carry flag (CF)</span> -<span id="L41" class="LineNr"> 41 </span> c1 5/subop/shift-right-logical %ebx 1/imm8 -<span id="L42" class="LineNr"> 42 </span> <span class="subxComment"># if LSB, draw a pixel</span> -<span id="L43" class="LineNr"> 43 </span> { -<span id="L44" class="LineNr"> 44 </span> 73/jump-if-not-CF <span class="Constant">break</span>/disp8 -<span id="L45" class="LineNr"> 45 </span> (<a href='101screen.subx.html#L3'>pixel</a> *(ebp+8) %eax %edx *(ebp+0x18)) -<span id="L46" class="LineNr"> 46 </span> } -<span id="L47" class="LineNr"> 47 </span> <span class="subxComment"># --x</span> -<span id="L48" class="LineNr"> 48 </span> 48/decrement-eax -<span id="L49" class="LineNr"> 49 </span> <span class="subxComment">#</span> -<span id="L50" class="LineNr"> 50 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L51" class="LineNr"> 51 </span> } -<span id="L52" class="LineNr"> 52 </span> <span class="subxComment"># reclaim row-bitmap</span> -<span id="L53" class="LineNr"> 53 </span> 5b/pop-to-ebx -<span id="L54" class="LineNr"> 54 </span> <span class="subxComment"># ++y</span> -<span id="L55" class="LineNr"> 55 </span> 42/increment-edx -<span id="L56" class="LineNr"> 56 </span> <span class="subxComment"># next bitmap row</span> -<span id="L57" class="LineNr"> 57 </span> 46/increment-esi -<span id="L58" class="LineNr"> 58 </span> <span class="subxComment">#</span> -<span id="L59" class="LineNr"> 59 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L60" class="LineNr"> 60 </span> } -<span id="L61" class="LineNr"> 61 </span><span class="Constant">$draw-grapheme:end</span>: -<span id="L62" class="LineNr"> 62 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L63" class="LineNr"> 63 </span> 5e/pop-to-esi -<span id="L64" class="LineNr"> 64 </span> 5b/pop-to-ebx -<span id="L65" class="LineNr"> 65 </span> 5a/pop-to-edx -<span id="L66" class="LineNr"> 66 </span> 59/pop-to-ecx -<span id="L67" class="LineNr"> 67 </span> 58/pop-to-eax -<span id="L68" class="LineNr"> 68 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L69" class="LineNr"> 69 </span> 89/<- %esp 5/r32/ebp -<span id="L70" class="LineNr"> 70 </span> 5d/pop-to-ebp -<span id="L71" class="LineNr"> 71 </span> c3/return -<span id="L72" class="LineNr"> 72 </span> -<span id="L73" class="LineNr"> 73 </span><span class="subxFunction">cursor-position</span>: <span class="subxComment"># screen: (addr screen) -> _/eax: int, _/ecx: int</span> -<span id="L74" class="LineNr"> 74 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L75" class="LineNr"> 75 </span> 55/push-ebp -<span id="L76" class="LineNr"> 76 </span> 89/<- %ebp 4/r32/esp -<span id="L77" class="LineNr"> 77 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> -<span id="L78" class="LineNr"> 78 </span> 8b/-> *<span class="SpecialChar"><a href='103grapheme.subx.html#L107'>Default-next-x</a></span> 0/r32/eax -<span id="L79" class="LineNr"> 79 </span> 8b/-> *<span class="SpecialChar"><a href='103grapheme.subx.html#L110'>Default-next-y</a></span> 1/r32/ecx -<span id="L80" class="LineNr"> 80 </span><span class="Constant">$cursor-position:end</span>: -<span id="L81" class="LineNr"> 81 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L82" class="LineNr"> 82 </span> 89/<- %esp 5/r32/ebp -<span id="L83" class="LineNr"> 83 </span> 5d/pop-to-ebp -<span id="L84" class="LineNr"> 84 </span> c3/return -<span id="L85" class="LineNr"> 85 </span> -<span id="L86" class="LineNr"> 86 </span><span class="subxFunction">set-cursor-position</span>: <span class="subxComment"># screen: (addr screen), x: int, y: int</span> -<span id="L87" class="LineNr"> 87 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L88" class="LineNr"> 88 </span> 55/push-ebp -<span id="L89" class="LineNr"> 89 </span> 89/<- %ebp 4/r32/esp -<span id="L90" class="LineNr"> 90 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L91" class="LineNr"> 91 </span> 50/push-eax -<span id="L92" class="LineNr"> 92 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> -<span id="L93" class="LineNr"> 93 </span> 8b/-> *(ebp+0xc) 0/r32/eax -<span id="L94" class="LineNr"> 94 </span> 89/<- *<span class="SpecialChar"><a href='103grapheme.subx.html#L107'>Default-next-x</a></span> 0/r32/eax -<span id="L95" class="LineNr"> 95 </span> 8b/-> *(ebp+0x10) 0/r32/eax -<span id="L96" class="LineNr"> 96 </span> 89/<- *<span class="SpecialChar"><a href='103grapheme.subx.html#L110'>Default-next-y</a></span> 0/r32/eax -<span id="L97" class="LineNr"> 97 </span><span class="Constant">$set-cursor-position:end</span>: -<span id="L98" class="LineNr"> 98 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L99" class="LineNr"> 99 </span> 58/pop-to-eax -<span id="L100" class="LineNr">100 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L101" class="LineNr">101 </span> 89/<- %esp 5/r32/ebp -<span id="L102" class="LineNr">102 </span> 5d/pop-to-ebp -<span id="L103" class="LineNr">103 </span> c3/return -<span id="L104" class="LineNr">104 </span> -<span id="L105" class="LineNr">105 </span>== data -<span id="L106" class="LineNr">106 </span> -<span id="L107" class="LineNr">107 </span><span class="SpecialChar">Default-next-x</span>: -<span id="L108" class="LineNr">108 </span> 0/imm32 -<span id="L109" class="LineNr">109 </span> -<span id="L110" class="LineNr">110 </span><span class="SpecialChar">Default-next-y</span>: -<span id="L111" class="LineNr">111 </span> 0/imm32 +<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Use the built-in font to draw a grapheme to screen.</span> +<span id="L2" class="LineNr"> 2 </span> +<span id="L3" class="LineNr"> 3 </span>== code +<span id="L4" class="LineNr"> 4 </span> +<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">draw-grapheme</span>: <span class="subxComment"># screen: (addr screen), g: grapheme, x: int, y: int, color: int</span> +<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L7" class="LineNr"> 7 </span> 55/push-ebp +<span id="L8" class="LineNr"> 8 </span> 89/<- %ebp 4/r32/esp +<span id="L9" class="LineNr"> 9 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L10" class="LineNr"> 10 </span> 50/push-eax +<span id="L11" class="LineNr"> 11 </span> 51/push-ecx +<span id="L12" class="LineNr"> 12 </span> 52/push-edx +<span id="L13" class="LineNr"> 13 </span> 53/push-ebx +<span id="L14" class="LineNr"> 14 </span> 56/push-esi +<span id="L15" class="LineNr"> 15 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> +<span id="L16" class="LineNr"> 16 </span> <span class="subxComment"># var letter-bitmap/esi = font[g]</span> +<span id="L17" class="LineNr"> 17 </span> 8b/-> *(ebp+0xc) 6/r32/esi +<span id="L18" class="LineNr"> 18 </span> c1 4/subop/shift-left %esi 4/imm8 +<span id="L19" class="LineNr"> 19 </span> 8d/copy-address *(esi+0x8800) 6/r32/esi <span class="subxComment"># font-start</span> +<span id="L20" class="LineNr"> 20 </span> <span class="subxComment"># if (letter-bitmap >= 0x9000) return # characters beyond ASCII currently not supported</span> +<span id="L21" class="LineNr"> 21 </span> 81 7/subop/compare %esi 0x9000/imm32 +<span id="L22" class="LineNr"> 22 </span> 7d/jump-if->= $draw-grapheme:end/disp8 +<span id="L23" class="LineNr"> 23 </span> <span class="subxComment"># edx = y</span> +<span id="L24" class="LineNr"> 24 </span> 8b/-> *(ebp+0x14) 2/r32/edx +<span id="L25" class="LineNr"> 25 </span> <span class="subxComment"># var ymax/ebx: int = y + 16</span> +<span id="L26" class="LineNr"> 26 </span> 8b/-> *(ebp+0x14) 3/r32/ebx +<span id="L27" class="LineNr"> 27 </span> 81 0/subop/add %ebx 0x10/imm32 +<span id="L28" class="LineNr"> 28 </span> { +<span id="L29" class="LineNr"> 29 </span> <span class="subxComment"># if (y >= ymax) break</span> +<span id="L30" class="LineNr"> 30 </span> 39/compare %edx 3/r32/ebx +<span id="L31" class="LineNr"> 31 </span> 7d/jump-if->= <span class="Constant">break</span>/disp8 +<span id="L32" class="LineNr"> 32 </span> <span class="subxComment"># eax = x + 7</span> +<span id="L33" class="LineNr"> 33 </span> 8b/-> *(ebp+0x10) 0/r32/eax +<span id="L34" class="LineNr"> 34 </span> 81 0/subop/add %eax 7/imm32 +<span id="L35" class="LineNr"> 35 </span> <span class="subxComment"># var xmin/ecx: int = x</span> +<span id="L36" class="LineNr"> 36 </span> 8b/-> *(ebp+0x10) 1/r32/ecx +<span id="L37" class="LineNr"> 37 </span> <span class="subxComment"># var row-bitmap/ebx: int = *letter-bitmap</span> +<span id="L38" class="LineNr"> 38 </span> 53/push-ebx +<span id="L39" class="LineNr"> 39 </span> 8b/-> *esi 3/r32/ebx +<span id="L40" class="LineNr"> 40 </span> { +<span id="L41" class="LineNr"> 41 </span> <span class="subxComment"># if (x < xmin) break</span> +<span id="L42" class="LineNr"> 42 </span> 39/compare %eax 1/r32/ecx +<span id="L43" class="LineNr"> 43 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 +<span id="L44" class="LineNr"> 44 </span> <span class="subxComment"># shift LSB from row-bitmap into carry flag (CF)</span> +<span id="L45" class="LineNr"> 45 </span> c1 5/subop/shift-right-logical %ebx 1/imm8 +<span id="L46" class="LineNr"> 46 </span> <span class="subxComment"># if LSB, draw a pixel</span> +<span id="L47" class="LineNr"> 47 </span> { +<span id="L48" class="LineNr"> 48 </span> 73/jump-if-not-CF <span class="Constant">break</span>/disp8 +<span id="L49" class="LineNr"> 49 </span> (<a href='101screen.subx.html#L5'>pixel</a> *(ebp+8) %eax %edx *(ebp+0x18)) +<span id="L50" class="LineNr"> 50 </span> } +<span id="L51" class="LineNr"> 51 </span> <span class="subxComment"># --x</span> +<span id="L52" class="LineNr"> 52 </span> 48/decrement-eax +<span id="L53" class="LineNr"> 53 </span> <span class="subxComment">#</span> +<span id="L54" class="LineNr"> 54 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L55" class="LineNr"> 55 </span> } +<span id="L56" class="LineNr"> 56 </span> <span class="subxComment"># reclaim row-bitmap</span> +<span id="L57" class="LineNr"> 57 </span> 5b/pop-to-ebx +<span id="L58" class="LineNr"> 58 </span> <span class="subxComment"># ++y</span> +<span id="L59" class="LineNr"> 59 </span> 42/increment-edx +<span id="L60" class="LineNr"> 60 </span> <span class="subxComment"># next bitmap row</span> +<span id="L61" class="LineNr"> 61 </span> 46/increment-esi +<span id="L62" class="LineNr"> 62 </span> <span class="subxComment">#</span> +<span id="L63" class="LineNr"> 63 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L64" class="LineNr"> 64 </span> } +<span id="L65" class="LineNr"> 65 </span><span class="Constant">$draw-grapheme:end</span>: +<span id="L66" class="LineNr"> 66 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L67" class="LineNr"> 67 </span> 5e/pop-to-esi +<span id="L68" class="LineNr"> 68 </span> 5b/pop-to-ebx +<span id="L69" class="LineNr"> 69 </span> 5a/pop-to-edx +<span id="L70" class="LineNr"> 70 </span> 59/pop-to-ecx +<span id="L71" class="LineNr"> 71 </span> 58/pop-to-eax +<span id="L72" class="LineNr"> 72 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L73" class="LineNr"> 73 </span> 89/<- %esp 5/r32/ebp +<span id="L74" class="LineNr"> 74 </span> 5d/pop-to-ebp +<span id="L75" class="LineNr"> 75 </span> c3/return +<span id="L76" class="LineNr"> 76 </span> +<span id="L77" class="LineNr"> 77 </span><span class="subxFunction">cursor-position</span>: <span class="subxComment"># screen: (addr screen) -> _/eax: int, _/ecx: int</span> +<span id="L78" class="LineNr"> 78 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L79" class="LineNr"> 79 </span> 55/push-ebp +<span id="L80" class="LineNr"> 80 </span> 89/<- %ebp 4/r32/esp +<span id="L81" class="LineNr"> 81 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> +<span id="L82" class="LineNr"> 82 </span> 8b/-> *<span class="SpecialChar"><a href='103grapheme.subx.html#L111'>Default-next-x</a></span> 0/r32/eax +<span id="L83" class="LineNr"> 83 </span> 8b/-> *<span class="SpecialChar"><a href='103grapheme.subx.html#L114'>Default-next-y</a></span> 1/r32/ecx +<span id="L84" class="LineNr"> 84 </span><span class="Constant">$cursor-position:end</span>: +<span id="L85" class="LineNr"> 85 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L86" class="LineNr"> 86 </span> 89/<- %esp 5/r32/ebp +<span id="L87" class="LineNr"> 87 </span> 5d/pop-to-ebp +<span id="L88" class="LineNr"> 88 </span> c3/return +<span id="L89" class="LineNr"> 89 </span> +<span id="L90" class="LineNr"> 90 </span><span class="subxFunction">set-cursor-position</span>: <span class="subxComment"># screen: (addr screen), x: int, y: int</span> +<span id="L91" class="LineNr"> 91 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L92" class="LineNr"> 92 </span> 55/push-ebp +<span id="L93" class="LineNr"> 93 </span> 89/<- %ebp 4/r32/esp +<span id="L94" class="LineNr"> 94 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L95" class="LineNr"> 95 </span> 50/push-eax +<span id="L96" class="LineNr"> 96 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> +<span id="L97" class="LineNr"> 97 </span> 8b/-> *(ebp+0xc) 0/r32/eax +<span id="L98" class="LineNr"> 98 </span> 89/<- *<span class="SpecialChar"><a href='103grapheme.subx.html#L111'>Default-next-x</a></span> 0/r32/eax +<span id="L99" class="LineNr"> 99 </span> 8b/-> *(ebp+0x10) 0/r32/eax +<span id="L100" class="LineNr">100 </span> 89/<- *<span class="SpecialChar"><a href='103grapheme.subx.html#L114'>Default-next-y</a></span> 0/r32/eax +<span id="L101" class="LineNr">101 </span><span class="Constant">$set-cursor-position:end</span>: +<span id="L102" class="LineNr">102 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L103" class="LineNr">103 </span> 58/pop-to-eax +<span id="L104" class="LineNr">104 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L105" class="LineNr">105 </span> 89/<- %esp 5/r32/ebp +<span id="L106" class="LineNr">106 </span> 5d/pop-to-ebp +<span id="L107" class="LineNr">107 </span> c3/return +<span id="L108" class="LineNr">108 </span> +<span id="L109" class="LineNr">109 </span>== data +<span id="L110" class="LineNr">110 </span> +<span id="L111" class="LineNr">111 </span><span class="SpecialChar">Default-next-x</span>: +<span id="L112" class="LineNr">112 </span> 0/imm32 +<span id="L113" class="LineNr">113 </span> +<span id="L114" class="LineNr">114 </span><span class="SpecialChar">Default-next-y</span>: +<span id="L115" class="LineNr">115 </span> 0/imm32 </pre> </body> </html> diff --git a/html/baremetal/104test.subx.html b/html/baremetal/104test.subx.html new file mode 100644 index 00000000..ef99acf6 --- /dev/null +++ b/html/baremetal/104test.subx.html @@ -0,0 +1,93 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - baremetal/104test.subx</title> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal-light"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; } +body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } +a { color:inherit; } +* { font-size:12pt; font-size: 1em; } +.SpecialChar { color: #d70000; } +.subxComment { color: #005faf; } +.subxS1Comment { color: #0000af; } +.LineNr { } +.subxFunction { color: #af5f00; text-decoration: underline; } +.Constant { color: #008787; } +--> +</style> + +<script type='text/javascript'> +<!-- + +/* function to open any folds containing a jumped-to line before jumping to it */ +function JumpToLine() +{ + var lineNum; + lineNum = window.location.hash; + lineNum = lineNum.substr(1); /* strip off '#' */ + + if (lineNum.indexOf('L') == -1) { + lineNum = 'L'+lineNum; + } + var lineElem = document.getElementById(lineNum); + /* Always jump to new location even if the line was hidden inside a fold, or + * we corrected the raw number to a line ID. + */ + if (lineElem) { + lineElem.scrollIntoView(true); + } + return true; +} +if ('onhashchange' in window) { + window.onhashchange = JumpToLine; +} + +--> +</script> +</head> +<body onload='JumpToLine();'> +<a href='https://github.com/akkartik/mu/blob/main/baremetal/104test.subx'>https://github.com/akkartik/mu/blob/main/baremetal/104test.subx</a> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Some helpers needed only because Mu doesn't support globals at the moment.</span> +<span id="L2" class="LineNr"> 2 </span> +<span id="L3" class="LineNr"> 3 </span>== code +<span id="L4" class="LineNr"> 4 </span> +<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">count-test-failure</span>: +<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L7" class="LineNr"> 7 </span> 55/push-ebp +<span id="L8" class="LineNr"> 8 </span> 89/<- %ebp 4/r32/esp +<span id="L9" class="LineNr"> 9 </span> <span class="subxComment">#</span> +<span id="L10" class="LineNr">10 </span> ff 0/subop/increment *<span class="SpecialChar"><a href='104test.subx.html#L31'>Num-test-failures</a></span> +<span id="L11" class="LineNr">11 </span><span class="Constant">$count-test-failure:end</span>: +<span id="L12" class="LineNr">12 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L13" class="LineNr">13 </span> 89/<- %esp 5/r32/ebp +<span id="L14" class="LineNr">14 </span> 5d/pop-to-ebp +<span id="L15" class="LineNr">15 </span> c3/return +<span id="L16" class="LineNr">16 </span> +<span id="L17" class="LineNr">17 </span><span class="subxFunction">num-test-failures</span>: <span class="subxComment"># -> _/eax: int</span> +<span id="L18" class="LineNr">18 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L19" class="LineNr">19 </span> 55/push-ebp +<span id="L20" class="LineNr">20 </span> 89/<- %ebp 4/r32/esp +<span id="L21" class="LineNr">21 </span> <span class="subxComment">#</span> +<span id="L22" class="LineNr">22 </span> 8b/-> *<span class="SpecialChar"><a href='104test.subx.html#L31'>Num-test-failures</a></span> 0/r32/eax +<span id="L23" class="LineNr">23 </span><span class="Constant">$num-test-failures:end</span>: +<span id="L24" class="LineNr">24 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L25" class="LineNr">25 </span> 89/<- %esp 5/r32/ebp +<span id="L26" class="LineNr">26 </span> 5d/pop-to-ebp +<span id="L27" class="LineNr">27 </span> c3/return +<span id="L28" class="LineNr">28 </span> +<span id="L29" class="LineNr">29 </span>== data +<span id="L30" class="LineNr">30 </span> +<span id="L31" class="LineNr">31 </span><span class="SpecialChar">Num-test-failures</span>: +<span id="L32" class="LineNr">32 </span> 0/imm32 +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/baremetal/108write.subx.html b/html/baremetal/108write.subx.html index 608ddb82..5253c1fa 100644 --- a/html/baremetal/108write.subx.html +++ b/html/baremetal/108write.subx.html @@ -57,141 +57,142 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/108write.subx'>https://github.com/akkartik/mu/blob/main/baremetal/108write.subx</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># instruction effective address register displacement immediate</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L4" class="LineNr"> 4 </span> -<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">write</span>: <span class="subxComment"># f: (addr stream byte), s: (addr array byte)</span> -<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L7" class="LineNr"> 7 </span> 55/push-ebp -<span id="L8" class="LineNr"> 8 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># if (s == 0) return</span> -<span id="L10" class="LineNr"> 10 </span> 81 7/subop/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 0/imm32 <span class="subxComment"># compare *(ebp+12)</span> -<span id="L11" class="LineNr"> 11 </span> 74/jump-if-= $write:end/disp8 -<span id="L12" class="LineNr"> 12 </span> <span class="subxComment"># TODO: write to file</span> -<span id="L13" class="LineNr"> 13 </span> <span class="subxComment"># otherwise, treat 'f' as a stream to append to</span> -<span id="L14" class="LineNr"> 14 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L15" class="LineNr"> 15 </span> 50/push-eax -<span id="L16" class="LineNr"> 16 </span> 51/push-ecx -<span id="L17" class="LineNr"> 17 </span> 52/push-edx -<span id="L18" class="LineNr"> 18 </span> 53/push-ebx -<span id="L19" class="LineNr"> 19 </span> <span class="subxComment"># ecx = f</span> -<span id="L20" class="LineNr"> 20 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span> -<span id="L21" class="LineNr"> 21 </span> <span class="subxComment"># edx = f->write</span> -<span id="L22" class="LineNr"> 22 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to edx</span> -<span id="L23" class="LineNr"> 23 </span> <span class="subxComment"># ebx = f->size</span> -<span id="L24" class="LineNr"> 24 </span> 8b/copy 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ecx+8) to ebx</span> -<span id="L25" class="LineNr"> 25 </span> <span class="subxComment"># eax = _append-3(&f->data[f->write], &f->data[f->size], s)</span> -<span id="L26" class="LineNr"> 26 </span> <span class="subxS2Comment"># . . push s</span> -<span id="L27" class="LineNr"> 27 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span> -<span id="L28" class="LineNr"> 28 </span> <span class="subxS2Comment"># . . push &f->data[f->size]</span> -<span id="L29" class="LineNr"> 29 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 3/index/ebx <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+ebx+12 to ebx</span> -<span id="L30" class="LineNr"> 30 </span> 53/push-ebx -<span id="L31" class="LineNr"> 31 </span> <span class="subxS2Comment"># . . push &f->data[f->write]</span> -<span id="L32" class="LineNr"> 32 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+edx+12 to ebx</span> -<span id="L33" class="LineNr"> 33 </span> 53/push-ebx -<span id="L34" class="LineNr"> 34 </span> <span class="subxS2Comment"># . . call</span> -<span id="L35" class="LineNr"> 35 </span> e8/call <a href='108write.subx.html#L54'>_append-3</a>/disp32 -<span id="L36" class="LineNr"> 36 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L37" class="LineNr"> 37 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L38" class="LineNr"> 38 </span> <span class="subxComment"># f->write += eax</span> -<span id="L39" class="LineNr"> 39 </span> 01/add 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># add eax to *ecx</span> -<span id="L40" class="LineNr"> 40 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L41" class="LineNr"> 41 </span> 5b/pop-to-ebx -<span id="L42" class="LineNr"> 42 </span> 5a/pop-to-edx -<span id="L43" class="LineNr"> 43 </span> 59/pop-to-ecx -<span id="L44" class="LineNr"> 44 </span> 58/pop-to-eax -<span id="L45" class="LineNr"> 45 </span><span class="Constant">$write:end</span>: -<span id="L46" class="LineNr"> 46 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L47" class="LineNr"> 47 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L48" class="LineNr"> 48 </span> 5d/pop-to-ebp -<span id="L49" class="LineNr"> 49 </span> c3/return -<span id="L50" class="LineNr"> 50 </span> -<span id="L51" class="LineNr"> 51 </span><span class="subxComment"># TODO: bring in tests once we have check-ints-equal</span> -<span id="L52" class="LineNr"> 52 </span> -<span id="L53" class="LineNr"> 53 </span><span class="subxComment"># 3-argument variant of _append</span> -<span id="L54" class="LineNr"> 54 </span><span class="subxMinorFunction">_append-3</span>: <span class="subxComment"># out: (addr byte), outend: (addr byte), s: (addr array byte) -> num_bytes_appended/eax</span> -<span id="L55" class="LineNr"> 55 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L56" class="LineNr"> 56 </span> 55/push-ebp -<span id="L57" class="LineNr"> 57 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L58" class="LineNr"> 58 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L59" class="LineNr"> 59 </span> 51/push-ecx -<span id="L60" class="LineNr"> 60 </span> <span class="subxComment"># eax = _append-4(out, outend, &s->data[0], &s->data[s->size])</span> -<span id="L61" class="LineNr"> 61 </span> <span class="subxS2Comment"># . . push &s->data[s->size]</span> -<span id="L62" class="LineNr"> 62 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span> -<span id="L63" class="LineNr"> 63 </span> 8b/copy 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *eax to ecx</span> -<span id="L64" class="LineNr"> 64 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+ecx+4 to ecx</span> -<span id="L65" class="LineNr"> 65 </span> 51/push-ecx -<span id="L66" class="LineNr"> 66 </span> <span class="subxS2Comment"># . . push &s->data[0]</span> -<span id="L67" class="LineNr"> 67 </span> 8d/copy-address 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+4 to ecx</span> -<span id="L68" class="LineNr"> 68 </span> 51/push-ecx -<span id="L69" class="LineNr"> 69 </span> <span class="subxS2Comment"># . . push outend</span> -<span id="L70" class="LineNr"> 70 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span> -<span id="L71" class="LineNr"> 71 </span> <span class="subxS2Comment"># . . push out</span> -<span id="L72" class="LineNr"> 72 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span> -<span id="L73" class="LineNr"> 73 </span> <span class="subxS2Comment"># . . call</span> -<span id="L74" class="LineNr"> 74 </span> e8/call <a href='108write.subx.html#L86'>_append-4</a>/disp32 -<span id="L75" class="LineNr"> 75 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L76" class="LineNr"> 76 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/imm32 <span class="subxComment"># add to esp</span> -<span id="L77" class="LineNr"> 77 </span><span class="Constant">$_append-3:end</span>: -<span id="L78" class="LineNr"> 78 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L79" class="LineNr"> 79 </span> 59/pop-to-ecx -<span id="L80" class="LineNr"> 80 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L81" class="LineNr"> 81 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L82" class="LineNr"> 82 </span> 5d/pop-to-ebp -<span id="L83" class="LineNr"> 83 </span> c3/return -<span id="L84" class="LineNr"> 84 </span> -<span id="L85" class="LineNr"> 85 </span><span class="subxComment"># 4-argument variant of _append</span> -<span id="L86" class="LineNr"> 86 </span><span class="subxMinorFunction">_append-4</span>: <span class="subxComment"># out: (addr byte), outend: (addr byte), in: (addr byte), inend: (addr byte) -> num_bytes_appended/eax: int</span> -<span id="L87" class="LineNr"> 87 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L88" class="LineNr"> 88 </span> 55/push-ebp -<span id="L89" class="LineNr"> 89 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L90" class="LineNr"> 90 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L91" class="LineNr"> 91 </span> 51/push-ecx -<span id="L92" class="LineNr"> 92 </span> 52/push-edx -<span id="L93" class="LineNr"> 93 </span> 53/push-ebx -<span id="L94" class="LineNr"> 94 </span> 56/push-esi -<span id="L95" class="LineNr"> 95 </span> 57/push-edi -<span id="L96" class="LineNr"> 96 </span> <span class="subxComment"># num_bytes_appended = 0</span> -<span id="L97" class="LineNr"> 97 </span> b8/copy-to-eax 0/imm32 -<span id="L98" class="LineNr"> 98 </span> <span class="subxComment"># edi = out</span> -<span id="L99" class="LineNr"> 99 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to edi</span> -<span id="L100" class="LineNr">100 </span> <span class="subxComment"># edx = outend</span> -<span id="L101" class="LineNr">101 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span> -<span id="L102" class="LineNr">102 </span> <span class="subxComment"># esi = in</span> -<span id="L103" class="LineNr">103 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to esi</span> -<span id="L104" class="LineNr">104 </span> <span class="subxComment"># ecx = inend</span> -<span id="L105" class="LineNr">105 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x14/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+20) to ecx</span> -<span id="L106" class="LineNr">106 </span><span class="Constant">$_append-4:loop</span>: -<span id="L107" class="LineNr">107 </span> <span class="subxComment"># if (in >= inend) break</span> -<span id="L108" class="LineNr">108 </span> 39/compare 3/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare esi with ecx</span> -<span id="L109" class="LineNr">109 </span> 73/jump-if-addr>= $_append-4:end/disp8 -<span id="L110" class="LineNr">110 </span> <span class="subxComment"># if (out >= outend) abort # just to catch test failures fast</span> -<span id="L111" class="LineNr">111 </span> 39/compare 3/mod/direct 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare edi with edx</span> -<span id="L112" class="LineNr">112 </span> 73/jump-if-addr>= $_append-4:end/disp8 <span class="subxComment"># TODO: abort</span> -<span id="L113" class="LineNr">113 </span> <span class="subxComment"># *out = *in</span> -<span id="L114" class="LineNr">114 </span> 8a/copy-byte 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/BL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at *esi to BL</span> -<span id="L115" class="LineNr">115 </span> 88/copy-byte 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/BL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at BL to *edi</span> -<span id="L116" class="LineNr">116 </span> <span class="subxComment"># ++num_bytes_appended</span> -<span id="L117" class="LineNr">117 </span> 40/increment-eax -<span id="L118" class="LineNr">118 </span> <span class="subxComment"># ++in</span> -<span id="L119" class="LineNr">119 </span> 46/increment-esi -<span id="L120" class="LineNr">120 </span> <span class="subxComment"># ++out</span> -<span id="L121" class="LineNr">121 </span> 47/increment-edi -<span id="L122" class="LineNr">122 </span> eb/jump $_append-4:<span class="Constant">loop</span>/disp8 -<span id="L123" class="LineNr">123 </span><span class="Constant">$_append-4:end</span>: -<span id="L124" class="LineNr">124 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L125" class="LineNr">125 </span> 5f/pop-to-edi -<span id="L126" class="LineNr">126 </span> 5e/pop-to-esi -<span id="L127" class="LineNr">127 </span> 5b/pop-to-ebx -<span id="L128" class="LineNr">128 </span> 5a/pop-to-edx -<span id="L129" class="LineNr">129 </span> 59/pop-to-ecx -<span id="L130" class="LineNr">130 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L131" class="LineNr">131 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L132" class="LineNr">132 </span> 5d/pop-to-ebp -<span id="L133" class="LineNr">133 </span> c3/return -<span id="L134" class="LineNr">134 </span> -<span id="L135" class="LineNr">135 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L1" class="LineNr"> 1 </span>== code +<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># instruction effective address register displacement immediate</span> +<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> +<span id="L4" class="LineNr"> 4 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L5" class="LineNr"> 5 </span> +<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">write</span>: <span class="subxComment"># f: (addr stream byte), s: (addr array byte)</span> +<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L8" class="LineNr"> 8 </span> 55/push-ebp +<span id="L9" class="LineNr"> 9 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L10" class="LineNr"> 10 </span> <span class="subxComment"># if (s == 0) return</span> +<span id="L11" class="LineNr"> 11 </span> 81 7/subop/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 0/imm32 <span class="subxComment"># compare *(ebp+12)</span> +<span id="L12" class="LineNr"> 12 </span> 74/jump-if-= $write:end/disp8 +<span id="L13" class="LineNr"> 13 </span> <span class="subxComment"># TODO: write to file</span> +<span id="L14" class="LineNr"> 14 </span> <span class="subxComment"># otherwise, treat 'f' as a stream to append to</span> +<span id="L15" class="LineNr"> 15 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L16" class="LineNr"> 16 </span> 50/push-eax +<span id="L17" class="LineNr"> 17 </span> 51/push-ecx +<span id="L18" class="LineNr"> 18 </span> 52/push-edx +<span id="L19" class="LineNr"> 19 </span> 53/push-ebx +<span id="L20" class="LineNr"> 20 </span> <span class="subxComment"># ecx = f</span> +<span id="L21" class="LineNr"> 21 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span> +<span id="L22" class="LineNr"> 22 </span> <span class="subxComment"># edx = f->write</span> +<span id="L23" class="LineNr"> 23 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to edx</span> +<span id="L24" class="LineNr"> 24 </span> <span class="subxComment"># ebx = f->size</span> +<span id="L25" class="LineNr"> 25 </span> 8b/copy 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ecx+8) to ebx</span> +<span id="L26" class="LineNr"> 26 </span> <span class="subxComment"># eax = _append-3(&f->data[f->write], &f->data[f->size], s)</span> +<span id="L27" class="LineNr"> 27 </span> <span class="subxS2Comment"># . . push s</span> +<span id="L28" class="LineNr"> 28 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span> +<span id="L29" class="LineNr"> 29 </span> <span class="subxS2Comment"># . . push &f->data[f->size]</span> +<span id="L30" class="LineNr"> 30 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 3/index/ebx <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+ebx+12 to ebx</span> +<span id="L31" class="LineNr"> 31 </span> 53/push-ebx +<span id="L32" class="LineNr"> 32 </span> <span class="subxS2Comment"># . . push &f->data[f->write]</span> +<span id="L33" class="LineNr"> 33 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+edx+12 to ebx</span> +<span id="L34" class="LineNr"> 34 </span> 53/push-ebx +<span id="L35" class="LineNr"> 35 </span> <span class="subxS2Comment"># . . call</span> +<span id="L36" class="LineNr"> 36 </span> e8/call <a href='108write.subx.html#L55'>_append-3</a>/disp32 +<span id="L37" class="LineNr"> 37 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L38" class="LineNr"> 38 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> +<span id="L39" class="LineNr"> 39 </span> <span class="subxComment"># f->write += eax</span> +<span id="L40" class="LineNr"> 40 </span> 01/add 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># add eax to *ecx</span> +<span id="L41" class="LineNr"> 41 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L42" class="LineNr"> 42 </span> 5b/pop-to-ebx +<span id="L43" class="LineNr"> 43 </span> 5a/pop-to-edx +<span id="L44" class="LineNr"> 44 </span> 59/pop-to-ecx +<span id="L45" class="LineNr"> 45 </span> 58/pop-to-eax +<span id="L46" class="LineNr"> 46 </span><span class="Constant">$write:end</span>: +<span id="L47" class="LineNr"> 47 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L48" class="LineNr"> 48 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L49" class="LineNr"> 49 </span> 5d/pop-to-ebp +<span id="L50" class="LineNr"> 50 </span> c3/return +<span id="L51" class="LineNr"> 51 </span> +<span id="L52" class="LineNr"> 52 </span><span class="subxComment"># TODO: bring in tests once we have check-ints-equal</span> +<span id="L53" class="LineNr"> 53 </span> +<span id="L54" class="LineNr"> 54 </span><span class="subxComment"># 3-argument variant of _append</span> +<span id="L55" class="LineNr"> 55 </span><span class="subxMinorFunction">_append-3</span>: <span class="subxComment"># out: (addr byte), outend: (addr byte), s: (addr array byte) -> num_bytes_appended/eax</span> +<span id="L56" class="LineNr"> 56 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L57" class="LineNr"> 57 </span> 55/push-ebp +<span id="L58" class="LineNr"> 58 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L59" class="LineNr"> 59 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L60" class="LineNr"> 60 </span> 51/push-ecx +<span id="L61" class="LineNr"> 61 </span> <span class="subxComment"># eax = _append-4(out, outend, &s->data[0], &s->data[s->size])</span> +<span id="L62" class="LineNr"> 62 </span> <span class="subxS2Comment"># . . push &s->data[s->size]</span> +<span id="L63" class="LineNr"> 63 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span> +<span id="L64" class="LineNr"> 64 </span> 8b/copy 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *eax to ecx</span> +<span id="L65" class="LineNr"> 65 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+ecx+4 to ecx</span> +<span id="L66" class="LineNr"> 66 </span> 51/push-ecx +<span id="L67" class="LineNr"> 67 </span> <span class="subxS2Comment"># . . push &s->data[0]</span> +<span id="L68" class="LineNr"> 68 </span> 8d/copy-address 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+4 to ecx</span> +<span id="L69" class="LineNr"> 69 </span> 51/push-ecx +<span id="L70" class="LineNr"> 70 </span> <span class="subxS2Comment"># . . push outend</span> +<span id="L71" class="LineNr"> 71 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span> +<span id="L72" class="LineNr"> 72 </span> <span class="subxS2Comment"># . . push out</span> +<span id="L73" class="LineNr"> 73 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span> +<span id="L74" class="LineNr"> 74 </span> <span class="subxS2Comment"># . . call</span> +<span id="L75" class="LineNr"> 75 </span> e8/call <a href='108write.subx.html#L87'>_append-4</a>/disp32 +<span id="L76" class="LineNr"> 76 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L77" class="LineNr"> 77 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/imm32 <span class="subxComment"># add to esp</span> +<span id="L78" class="LineNr"> 78 </span><span class="Constant">$_append-3:end</span>: +<span id="L79" class="LineNr"> 79 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L80" class="LineNr"> 80 </span> 59/pop-to-ecx +<span id="L81" class="LineNr"> 81 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L82" class="LineNr"> 82 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L83" class="LineNr"> 83 </span> 5d/pop-to-ebp +<span id="L84" class="LineNr"> 84 </span> c3/return +<span id="L85" class="LineNr"> 85 </span> +<span id="L86" class="LineNr"> 86 </span><span class="subxComment"># 4-argument variant of _append</span> +<span id="L87" class="LineNr"> 87 </span><span class="subxMinorFunction">_append-4</span>: <span class="subxComment"># out: (addr byte), outend: (addr byte), in: (addr byte), inend: (addr byte) -> num_bytes_appended/eax: int</span> +<span id="L88" class="LineNr"> 88 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L89" class="LineNr"> 89 </span> 55/push-ebp +<span id="L90" class="LineNr"> 90 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L91" class="LineNr"> 91 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L92" class="LineNr"> 92 </span> 51/push-ecx +<span id="L93" class="LineNr"> 93 </span> 52/push-edx +<span id="L94" class="LineNr"> 94 </span> 53/push-ebx +<span id="L95" class="LineNr"> 95 </span> 56/push-esi +<span id="L96" class="LineNr"> 96 </span> 57/push-edi +<span id="L97" class="LineNr"> 97 </span> <span class="subxComment"># num_bytes_appended = 0</span> +<span id="L98" class="LineNr"> 98 </span> b8/copy-to-eax 0/imm32 +<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># edi = out</span> +<span id="L100" class="LineNr">100 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to edi</span> +<span id="L101" class="LineNr">101 </span> <span class="subxComment"># edx = outend</span> +<span id="L102" class="LineNr">102 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span> +<span id="L103" class="LineNr">103 </span> <span class="subxComment"># esi = in</span> +<span id="L104" class="LineNr">104 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to esi</span> +<span id="L105" class="LineNr">105 </span> <span class="subxComment"># ecx = inend</span> +<span id="L106" class="LineNr">106 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x14/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+20) to ecx</span> +<span id="L107" class="LineNr">107 </span><span class="Constant">$_append-4:loop</span>: +<span id="L108" class="LineNr">108 </span> <span class="subxComment"># if (in >= inend) break</span> +<span id="L109" class="LineNr">109 </span> 39/compare 3/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare esi with ecx</span> +<span id="L110" class="LineNr">110 </span> 73/jump-if-addr>= $_append-4:end/disp8 +<span id="L111" class="LineNr">111 </span> <span class="subxComment"># if (out >= outend) abort # just to catch test failures fast</span> +<span id="L112" class="LineNr">112 </span> 39/compare 3/mod/direct 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare edi with edx</span> +<span id="L113" class="LineNr">113 </span> 73/jump-if-addr>= $_append-4:end/disp8 <span class="subxComment"># TODO: abort</span> +<span id="L114" class="LineNr">114 </span> <span class="subxComment"># *out = *in</span> +<span id="L115" class="LineNr">115 </span> 8a/copy-byte 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/BL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at *esi to BL</span> +<span id="L116" class="LineNr">116 </span> 88/copy-byte 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/BL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at BL to *edi</span> +<span id="L117" class="LineNr">117 </span> <span class="subxComment"># ++num_bytes_appended</span> +<span id="L118" class="LineNr">118 </span> 40/increment-eax +<span id="L119" class="LineNr">119 </span> <span class="subxComment"># ++in</span> +<span id="L120" class="LineNr">120 </span> 46/increment-esi +<span id="L121" class="LineNr">121 </span> <span class="subxComment"># ++out</span> +<span id="L122" class="LineNr">122 </span> 47/increment-edi +<span id="L123" class="LineNr">123 </span> eb/jump $_append-4:<span class="Constant">loop</span>/disp8 +<span id="L124" class="LineNr">124 </span><span class="Constant">$_append-4:end</span>: +<span id="L125" class="LineNr">125 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L126" class="LineNr">126 </span> 5f/pop-to-edi +<span id="L127" class="LineNr">127 </span> 5e/pop-to-esi +<span id="L128" class="LineNr">128 </span> 5b/pop-to-ebx +<span id="L129" class="LineNr">129 </span> 5a/pop-to-edx +<span id="L130" class="LineNr">130 </span> 59/pop-to-ecx +<span id="L131" class="LineNr">131 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L132" class="LineNr">132 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L133" class="LineNr">133 </span> 5d/pop-to-ebp +<span id="L134" class="LineNr">134 </span> c3/return +<span id="L135" class="LineNr">135 </span> +<span id="L136" class="LineNr">136 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> diff --git a/html/baremetal/112read-byte.subx.html b/html/baremetal/112read-byte.subx.html index 06271ee0..553a564c 100644 --- a/html/baremetal/112read-byte.subx.html +++ b/html/baremetal/112read-byte.subx.html @@ -56,43 +56,44 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/112read-byte.subx'>https://github.com/akkartik/mu/blob/main/baremetal/112read-byte.subx</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># instruction effective address register displacement immediate</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L4" class="LineNr"> 4 </span> -<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># TODO: read-byte-buffered</span> -<span id="L6" class="LineNr"> 6 </span> -<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># Return next byte value in eax, with top 3 bytes cleared.</span> -<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># Abort on reaching end of stream.</span> -<span id="L9" class="LineNr"> 9 </span><span class="subxFunction">read-byte</span>: <span class="subxComment"># s: (addr stream byte) -> result/eax: byte</span> -<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L11" class="LineNr">11 </span> 55/push-ebp -<span id="L12" class="LineNr">12 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L13" class="LineNr">13 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L14" class="LineNr">14 </span> 51/push-ecx -<span id="L15" class="LineNr">15 </span> 56/push-esi -<span id="L16" class="LineNr">16 </span> <span class="subxComment"># esi = s</span> -<span id="L17" class="LineNr">17 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> -<span id="L18" class="LineNr">18 </span> <span class="subxComment"># ecx = s->read</span> -<span id="L19" class="LineNr">19 </span> 8b/copy 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+4) to ecx</span> -<span id="L20" class="LineNr">20 </span> <span class="subxComment"># if (f->read >= f->write) abort</span> -<span id="L21" class="LineNr">21 </span> 3b/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with *esi</span> -<span id="L22" class="LineNr">22 </span> 0f 8d/jump-if->= $read-byte:end/disp32 <span class="subxComment"># TODO: abort</span> -<span id="L23" class="LineNr">23 </span> <span class="subxComment"># result = f->data[f->read]</span> -<span id="L24" class="LineNr">24 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> -<span id="L25" class="LineNr">25 </span> 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(esi+ecx+12) to AL</span> -<span id="L26" class="LineNr">26 </span> <span class="subxComment"># ++f->read</span> -<span id="L27" class="LineNr">27 </span> ff 0/subop/increment 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># increment *(esi+4)</span> -<span id="L28" class="LineNr">28 </span><span class="Constant">$read-byte:end</span>: -<span id="L29" class="LineNr">29 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L30" class="LineNr">30 </span> 5e/pop-to-esi -<span id="L31" class="LineNr">31 </span> 59/pop-to-ecx -<span id="L32" class="LineNr">32 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L33" class="LineNr">33 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L34" class="LineNr">34 </span> 5d/pop-to-ebp -<span id="L35" class="LineNr">35 </span> c3/return -<span id="L36" class="LineNr">36 </span> -<span id="L37" class="LineNr">37 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L1" class="LineNr"> 1 </span>== code +<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># instruction effective address register displacement immediate</span> +<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> +<span id="L4" class="LineNr"> 4 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L5" class="LineNr"> 5 </span> +<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># TODO: read-byte-buffered</span> +<span id="L7" class="LineNr"> 7 </span> +<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># Return next byte value in eax, with top 3 bytes cleared.</span> +<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># Abort on reaching end of stream.</span> +<span id="L10" class="LineNr">10 </span><span class="subxFunction">read-byte</span>: <span class="subxComment"># s: (addr stream byte) -> result/eax: byte</span> +<span id="L11" class="LineNr">11 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L12" class="LineNr">12 </span> 55/push-ebp +<span id="L13" class="LineNr">13 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L14" class="LineNr">14 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L15" class="LineNr">15 </span> 51/push-ecx +<span id="L16" class="LineNr">16 </span> 56/push-esi +<span id="L17" class="LineNr">17 </span> <span class="subxComment"># esi = s</span> +<span id="L18" class="LineNr">18 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> +<span id="L19" class="LineNr">19 </span> <span class="subxComment"># ecx = s->read</span> +<span id="L20" class="LineNr">20 </span> 8b/copy 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+4) to ecx</span> +<span id="L21" class="LineNr">21 </span> <span class="subxComment"># if (f->read >= f->write) abort</span> +<span id="L22" class="LineNr">22 </span> 3b/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with *esi</span> +<span id="L23" class="LineNr">23 </span> 0f 8d/jump-if->= $read-byte:end/disp32 <span class="subxComment"># TODO: abort</span> +<span id="L24" class="LineNr">24 </span> <span class="subxComment"># result = f->data[f->read]</span> +<span id="L25" class="LineNr">25 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> +<span id="L26" class="LineNr">26 </span> 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(esi+ecx+12) to AL</span> +<span id="L27" class="LineNr">27 </span> <span class="subxComment"># ++f->read</span> +<span id="L28" class="LineNr">28 </span> ff 0/subop/increment 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># increment *(esi+4)</span> +<span id="L29" class="LineNr">29 </span><span class="Constant">$read-byte:end</span>: +<span id="L30" class="LineNr">30 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L31" class="LineNr">31 </span> 5e/pop-to-esi +<span id="L32" class="LineNr">32 </span> 59/pop-to-ecx +<span id="L33" class="LineNr">33 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L34" class="LineNr">34 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L35" class="LineNr">35 </span> 5d/pop-to-ebp +<span id="L36" class="LineNr">36 </span> c3/return +<span id="L37" class="LineNr">37 </span> +<span id="L38" class="LineNr">38 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> diff --git a/html/baremetal/115write-byte.subx.html b/html/baremetal/115write-byte.subx.html index 7bcd8a8a..1a23343f 100644 --- a/html/baremetal/115write-byte.subx.html +++ b/html/baremetal/115write-byte.subx.html @@ -56,43 +56,44 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/115write-byte.subx'>https://github.com/akkartik/mu/blob/main/baremetal/115write-byte.subx</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># instruction effective address register displacement immediate</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L4" class="LineNr"> 4 </span> -<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># Write lower byte of 'n' to 'f'.</span> -<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">append-byte</span>: <span class="subxComment"># f: (addr stream byte), n: int</span> -<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L8" class="LineNr"> 8 </span> 55/push-ebp -<span id="L9" class="LineNr"> 9 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L11" class="LineNr">11 </span> 51/push-ecx -<span id="L12" class="LineNr">12 </span> 57/push-edi -<span id="L13" class="LineNr">13 </span> <span class="subxComment"># edi = f</span> -<span id="L14" class="LineNr">14 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to edi</span> -<span id="L15" class="LineNr">15 </span> <span class="subxComment"># ecx = f->write</span> -<span id="L16" class="LineNr">16 </span> 8b/copy 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *edi to ecx</span> -<span id="L17" class="LineNr">17 </span> <span class="subxComment"># if (f->write >= f->size) abort</span> -<span id="L18" class="LineNr">18 </span> 3b/compare 1/mod/*+disp8 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx with *(edi+8)</span> -<span id="L19" class="LineNr">19 </span> 7d/jump-if->= $append-byte:end/disp8 <span class="subxComment"># TODO: abort</span> -<span id="L20" class="LineNr">20 </span><span class="Constant">$append-byte:to-stream</span>: -<span id="L21" class="LineNr">21 </span> <span class="subxComment"># write to stream</span> -<span id="L22" class="LineNr">22 </span> <span class="subxComment"># f->data[f->write] = LSB(n)</span> -<span id="L23" class="LineNr">23 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> -<span id="L24" class="LineNr">24 </span> 8a/copy-byte 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(ebp+12) to AL</span> -<span id="L25" class="LineNr">25 </span> 88/copy-byte 1/mod/*+disp8 4/rm32/sib 7/base/edi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy AL to *(edi+ecx+12)</span> -<span id="L26" class="LineNr">26 </span> <span class="subxComment"># ++f->write</span> -<span id="L27" class="LineNr">27 </span> ff 0/subop/increment 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># increment *edi</span> -<span id="L28" class="LineNr">28 </span><span class="Constant">$append-byte:end</span>: -<span id="L29" class="LineNr">29 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L30" class="LineNr">30 </span> 5f/pop-to-edi -<span id="L31" class="LineNr">31 </span> 59/pop-to-ecx -<span id="L32" class="LineNr">32 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L33" class="LineNr">33 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L34" class="LineNr">34 </span> 5d/pop-to-ebp -<span id="L35" class="LineNr">35 </span> c3/return -<span id="L36" class="LineNr">36 </span> -<span id="L37" class="LineNr">37 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L1" class="LineNr"> 1 </span>== code +<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># instruction effective address register displacement immediate</span> +<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> +<span id="L4" class="LineNr"> 4 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L5" class="LineNr"> 5 </span> +<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># Write lower byte of 'n' to 'f'.</span> +<span id="L7" class="LineNr"> 7 </span><span class="subxFunction">append-byte</span>: <span class="subxComment"># f: (addr stream byte), n: int</span> +<span id="L8" class="LineNr"> 8 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L9" class="LineNr"> 9 </span> 55/push-ebp +<span id="L10" class="LineNr">10 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L11" class="LineNr">11 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L12" class="LineNr">12 </span> 51/push-ecx +<span id="L13" class="LineNr">13 </span> 57/push-edi +<span id="L14" class="LineNr">14 </span> <span class="subxComment"># edi = f</span> +<span id="L15" class="LineNr">15 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to edi</span> +<span id="L16" class="LineNr">16 </span> <span class="subxComment"># ecx = f->write</span> +<span id="L17" class="LineNr">17 </span> 8b/copy 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *edi to ecx</span> +<span id="L18" class="LineNr">18 </span> <span class="subxComment"># if (f->write >= f->size) abort</span> +<span id="L19" class="LineNr">19 </span> 3b/compare 1/mod/*+disp8 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx with *(edi+8)</span> +<span id="L20" class="LineNr">20 </span> 7d/jump-if->= $append-byte:end/disp8 <span class="subxComment"># TODO: abort</span> +<span id="L21" class="LineNr">21 </span><span class="Constant">$append-byte:to-stream</span>: +<span id="L22" class="LineNr">22 </span> <span class="subxComment"># write to stream</span> +<span id="L23" class="LineNr">23 </span> <span class="subxComment"># f->data[f->write] = LSB(n)</span> +<span id="L24" class="LineNr">24 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> +<span id="L25" class="LineNr">25 </span> 8a/copy-byte 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(ebp+12) to AL</span> +<span id="L26" class="LineNr">26 </span> 88/copy-byte 1/mod/*+disp8 4/rm32/sib 7/base/edi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy AL to *(edi+ecx+12)</span> +<span id="L27" class="LineNr">27 </span> <span class="subxComment"># ++f->write</span> +<span id="L28" class="LineNr">28 </span> ff 0/subop/increment 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># increment *edi</span> +<span id="L29" class="LineNr">29 </span><span class="Constant">$append-byte:end</span>: +<span id="L30" class="LineNr">30 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L31" class="LineNr">31 </span> 5f/pop-to-edi +<span id="L32" class="LineNr">32 </span> 59/pop-to-ecx +<span id="L33" class="LineNr">33 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L34" class="LineNr">34 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L35" class="LineNr">35 </span> 5d/pop-to-ebp +<span id="L36" class="LineNr">36 </span> c3/return +<span id="L37" class="LineNr">37 </span> +<span id="L38" class="LineNr">38 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> diff --git a/html/baremetal/120allocate.subx.html b/html/baremetal/120allocate.subx.html index 11c874ee..d3bc3fc8 100644 --- a/html/baremetal/120allocate.subx.html +++ b/html/baremetal/120allocate.subx.html @@ -56,58 +56,59 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/120allocate.subx'>https://github.com/akkartik/mu/blob/main/baremetal/120allocate.subx</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># instruction effective address register displacement immediate</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L4" class="LineNr"> 4 </span> -<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># Fill a region of memory with zeroes.</span> -<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">zero-out</span>: <span class="subxComment"># start: (addr byte), size: int</span> -<span id="L7" class="LineNr"> 7 </span> <span class="subxComment"># pseudocode:</span> -<span id="L8" class="LineNr"> 8 </span> <span class="subxComment"># curr/esi = start</span> -<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># i/ecx = 0</span> -<span id="L10" class="LineNr">10 </span> <span class="subxComment"># while true</span> -<span id="L11" class="LineNr">11 </span> <span class="subxComment"># if (i >= size) break</span> -<span id="L12" class="LineNr">12 </span> <span class="subxComment"># *curr = 0</span> -<span id="L13" class="LineNr">13 </span> <span class="subxComment"># ++curr</span> -<span id="L14" class="LineNr">14 </span> <span class="subxComment"># ++i</span> -<span id="L15" class="LineNr">15 </span> <span class="subxComment">#</span> -<span id="L16" class="LineNr">16 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L17" class="LineNr">17 </span> 55/push-ebp -<span id="L18" class="LineNr">18 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L19" class="LineNr">19 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L20" class="LineNr">20 </span> 50/push-eax -<span id="L21" class="LineNr">21 </span> 51/push-ecx -<span id="L22" class="LineNr">22 </span> 52/push-edx -<span id="L23" class="LineNr">23 </span> 56/push-esi -<span id="L24" class="LineNr">24 </span> <span class="subxComment"># curr/esi = start</span> -<span id="L25" class="LineNr">25 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> -<span id="L26" class="LineNr">26 </span> <span class="subxComment"># var i/ecx: int = 0</span> -<span id="L27" class="LineNr">27 </span> 31/xor 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear ecx</span> -<span id="L28" class="LineNr">28 </span> <span class="subxComment"># edx = size</span> -<span id="L29" class="LineNr">29 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span> -<span id="L30" class="LineNr">30 </span><span class="Constant">$zero-out:loop</span>: -<span id="L31" class="LineNr">31 </span> <span class="subxComment"># if (i >= size) break</span> -<span id="L32" class="LineNr">32 </span> 39/compare 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with edx</span> -<span id="L33" class="LineNr">33 </span> 7d/jump-if->= $zero-out:end/disp8 -<span id="L34" class="LineNr">34 </span> <span class="subxComment"># *curr = 0</span> -<span id="L35" class="LineNr">35 </span> c6 0/subop/copy-byte 0/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm8 <span class="subxComment"># copy byte to *esi</span> -<span id="L36" class="LineNr">36 </span> <span class="subxComment"># ++curr</span> -<span id="L37" class="LineNr">37 </span> 46/increment-esi -<span id="L38" class="LineNr">38 </span> <span class="subxComment"># ++i</span> -<span id="L39" class="LineNr">39 </span> 41/increment-ecx -<span id="L40" class="LineNr">40 </span> eb/jump $zero-out:<span class="Constant">loop</span>/disp8 -<span id="L41" class="LineNr">41 </span><span class="Constant">$zero-out:end</span>: -<span id="L42" class="LineNr">42 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L43" class="LineNr">43 </span> 5e/pop-to-esi -<span id="L44" class="LineNr">44 </span> 5a/pop-to-edx -<span id="L45" class="LineNr">45 </span> 59/pop-to-ecx -<span id="L46" class="LineNr">46 </span> 58/pop-to-eax -<span id="L47" class="LineNr">47 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L48" class="LineNr">48 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L49" class="LineNr">49 </span> 5d/pop-to-ebp -<span id="L50" class="LineNr">50 </span> c3/return -<span id="L51" class="LineNr">51 </span> -<span id="L52" class="LineNr">52 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L1" class="LineNr"> 1 </span>== code +<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># instruction effective address register displacement immediate</span> +<span id="L3" class="LineNr"> 3 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> +<span id="L4" class="LineNr"> 4 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L5" class="LineNr"> 5 </span> +<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># Fill a region of memory with zeroes.</span> +<span id="L7" class="LineNr"> 7 </span><span class="subxFunction">zero-out</span>: <span class="subxComment"># start: (addr byte), size: int</span> +<span id="L8" class="LineNr"> 8 </span> <span class="subxComment"># pseudocode:</span> +<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># curr/esi = start</span> +<span id="L10" class="LineNr">10 </span> <span class="subxComment"># i/ecx = 0</span> +<span id="L11" class="LineNr">11 </span> <span class="subxComment"># while true</span> +<span id="L12" class="LineNr">12 </span> <span class="subxComment"># if (i >= size) break</span> +<span id="L13" class="LineNr">13 </span> <span class="subxComment"># *curr = 0</span> +<span id="L14" class="LineNr">14 </span> <span class="subxComment"># ++curr</span> +<span id="L15" class="LineNr">15 </span> <span class="subxComment"># ++i</span> +<span id="L16" class="LineNr">16 </span> <span class="subxComment">#</span> +<span id="L17" class="LineNr">17 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L18" class="LineNr">18 </span> 55/push-ebp +<span id="L19" class="LineNr">19 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L20" class="LineNr">20 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L21" class="LineNr">21 </span> 50/push-eax +<span id="L22" class="LineNr">22 </span> 51/push-ecx +<span id="L23" class="LineNr">23 </span> 52/push-edx +<span id="L24" class="LineNr">24 </span> 56/push-esi +<span id="L25" class="LineNr">25 </span> <span class="subxComment"># curr/esi = start</span> +<span id="L26" class="LineNr">26 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> +<span id="L27" class="LineNr">27 </span> <span class="subxComment"># var i/ecx: int = 0</span> +<span id="L28" class="LineNr">28 </span> 31/xor 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear ecx</span> +<span id="L29" class="LineNr">29 </span> <span class="subxComment"># edx = size</span> +<span id="L30" class="LineNr">30 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span> +<span id="L31" class="LineNr">31 </span><span class="Constant">$zero-out:loop</span>: +<span id="L32" class="LineNr">32 </span> <span class="subxComment"># if (i >= size) break</span> +<span id="L33" class="LineNr">33 </span> 39/compare 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with edx</span> +<span id="L34" class="LineNr">34 </span> 7d/jump-if->= $zero-out:end/disp8 +<span id="L35" class="LineNr">35 </span> <span class="subxComment"># *curr = 0</span> +<span id="L36" class="LineNr">36 </span> c6 0/subop/copy-byte 0/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm8 <span class="subxComment"># copy byte to *esi</span> +<span id="L37" class="LineNr">37 </span> <span class="subxComment"># ++curr</span> +<span id="L38" class="LineNr">38 </span> 46/increment-esi +<span id="L39" class="LineNr">39 </span> <span class="subxComment"># ++i</span> +<span id="L40" class="LineNr">40 </span> 41/increment-ecx +<span id="L41" class="LineNr">41 </span> eb/jump $zero-out:<span class="Constant">loop</span>/disp8 +<span id="L42" class="LineNr">42 </span><span class="Constant">$zero-out:end</span>: +<span id="L43" class="LineNr">43 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L44" class="LineNr">44 </span> 5e/pop-to-esi +<span id="L45" class="LineNr">45 </span> 5a/pop-to-edx +<span id="L46" class="LineNr">46 </span> 59/pop-to-ecx +<span id="L47" class="LineNr">47 </span> 58/pop-to-eax +<span id="L48" class="LineNr">48 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L49" class="LineNr">49 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L50" class="LineNr">50 </span> 5d/pop-to-ebp +<span id="L51" class="LineNr">51 </span> c3/return +<span id="L52" class="LineNr">52 </span> +<span id="L53" class="LineNr">53 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> diff --git a/html/baremetal/302stack_allocate.subx.html b/html/baremetal/302stack_allocate.subx.html index 0cbbf443..af165122 100644 --- a/html/baremetal/302stack_allocate.subx.html +++ b/html/baremetal/302stack_allocate.subx.html @@ -104,7 +104,7 @@ if ('onhashchange' in window) { <span id="L47" class="LineNr">47 </span> 89/<- *<span class="SpecialChar"><a href='302stack_allocate.subx.html#L58'>Push-n-zero-bytes-esp</a></span> 4/r32/esp <span id="L48" class="LineNr">48 </span> 81 0/subop/add *<span class="SpecialChar"><a href='302stack_allocate.subx.html#L58'>Push-n-zero-bytes-esp</a></span> 4/imm32 <span id="L49" class="LineNr">49 </span> 81 0/subop/add *(ebp+4) 4/imm32 -<span id="L50" class="LineNr">50 </span> (<a href='120allocate.subx.html#L6'>zero-out</a> *<span class="SpecialChar"><a href='302stack_allocate.subx.html#L58'>Push-n-zero-bytes-esp</a></span> *(ebp+4)) <span class="subxComment"># n+4</span> +<span id="L50" class="LineNr">50 </span> (<a href='120allocate.subx.html#L7'>zero-out</a> *<span class="SpecialChar"><a href='302stack_allocate.subx.html#L58'>Push-n-zero-bytes-esp</a></span> *(ebp+4)) <span class="subxComment"># n+4</span> <span id="L51" class="LineNr">51 </span><span class="Constant">$push-n-zero-bytes:epilogue</span>: <span id="L52" class="LineNr">52 </span> 8b/-> *<span class="SpecialChar"><a href='302stack_allocate.subx.html#L56'>Push-n-zero-bytes-ebp</a></span> 5/r32/ebp <span class="subxComment"># restore spill</span> <span id="L53" class="LineNr">53 </span> c3/return diff --git a/html/baremetal/309stream.subx.html b/html/baremetal/309stream.subx.html index 16e45ed7..3883daba 100644 --- a/html/baremetal/309stream.subx.html +++ b/html/baremetal/309stream.subx.html @@ -137,7 +137,7 @@ if ('onhashchange' in window) { <span id="L81" class="LineNr"> 81 </span> 8b/-> *(ebp+0x10) 1/r32/ecx <span id="L82" class="LineNr"> 82 </span> 8d/copy-address *(eax+ecx) 1/r32/ecx <span id="L83" class="LineNr"> 83 </span> <span class="subxComment">#</span> -<span id="L84" class="LineNr"> 84 </span> (<a href='108write.subx.html#L86'>_append-4</a> %edx %ebx %eax %ecx) <span class="subxComment"># => eax</span> +<span id="L84" class="LineNr"> 84 </span> (<a href='108write.subx.html#L87'>_append-4</a> %edx %ebx %eax %ecx) <span class="subxComment"># => eax</span> <span id="L85" class="LineNr"> 85 </span> <span class="subxComment"># s->write += n</span> <span id="L86" class="LineNr"> 86 </span> 8b/-> *(ebp+0x10) 1/r32/ecx <span id="L87" class="LineNr"> 87 </span> 01/add-to *edi 1/r32/ecx @@ -183,7 +183,7 @@ if ('onhashchange' in window) { <span id="L127" class="LineNr">127 </span> 8b/-> *(ebp+0x10) 1/r32/ecx <span id="L128" class="LineNr">128 </span> 8d/copy-address *(eax+ecx) 1/r32/ecx <span id="L129" class="LineNr">129 </span> <span class="subxComment">#</span> -<span id="L130" class="LineNr">130 </span> (<a href='108write.subx.html#L86'>_append-4</a> %eax %ecx %edx %ebx) <span class="subxComment"># => eax</span> +<span id="L130" class="LineNr">130 </span> (<a href='108write.subx.html#L87'>_append-4</a> %eax %ecx %edx %ebx) <span class="subxComment"># => eax</span> <span id="L131" class="LineNr">131 </span> <span class="subxComment"># s->read += n</span> <span id="L132" class="LineNr">132 </span> 8b/-> *(ebp+0x10) 1/r32/ecx <span id="L133" class="LineNr">133 </span> 01/add-to *(esi+4) 1/r32/ecx diff --git a/html/baremetal/313index-bounds-check.subx.html b/html/baremetal/313index-bounds-check.subx.html index a6421293..2dc4cfc4 100644 --- a/html/baremetal/313index-bounds-check.subx.html +++ b/html/baremetal/313index-bounds-check.subx.html @@ -56,15 +56,17 @@ if ('onhashchange' in window) { <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="subxComment"># TODO: bring this back</span> <span id="L2" class="LineNr"> 2 </span> -<span id="L3" class="LineNr"> 3 </span><span class="subxMinorFunction">__check-mu-array-bounds</span>: <span class="subxComment"># index: int, elem-size: int, arr-size: int, function-name: (addr array byte), array-name: (addr array byte)</span> -<span id="L4" class="LineNr"> 4 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L5" class="LineNr"> 5 </span> 55/push-ebp -<span id="L6" class="LineNr"> 6 </span> 89/<- %ebp 4/r32/esp -<span id="L7" class="LineNr"> 7 </span><span class="Constant">$__check-mu-array-bounds:end</span>: -<span id="L8" class="LineNr"> 8 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L9" class="LineNr"> 9 </span> 89/<- %esp 5/r32/ebp -<span id="L10" class="LineNr">10 </span> 5d/pop-to-ebp -<span id="L11" class="LineNr">11 </span> c3/return +<span id="L3" class="LineNr"> 3 </span>== code +<span id="L4" class="LineNr"> 4 </span> +<span id="L5" class="LineNr"> 5 </span><span class="subxMinorFunction">__check-mu-array-bounds</span>: <span class="subxComment"># index: int, elem-size: int, arr-size: int, function-name: (addr array byte), array-name: (addr array byte)</span> +<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L7" class="LineNr"> 7 </span> 55/push-ebp +<span id="L8" class="LineNr"> 8 </span> 89/<- %ebp 4/r32/esp +<span id="L9" class="LineNr"> 9 </span><span class="Constant">$__check-mu-array-bounds:end</span>: +<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L11" class="LineNr">11 </span> 89/<- %esp 5/r32/ebp +<span id="L12" class="LineNr">12 </span> 5d/pop-to-ebp +<span id="L13" class="LineNr">13 </span> c3/return </pre> </body> </html> diff --git a/html/baremetal/400.mu.html b/html/baremetal/400.mu.html index 95835ad8..67aed2ec 100644 --- a/html/baremetal/400.mu.html +++ b/html/baremetal/400.mu.html @@ -17,6 +17,7 @@ a { color:inherit; } .PreProc { color: #c000c0; } .LineNr { } .Constant { color: #008787; } +.muComment { color: #005faf; } --> </style> @@ -52,17 +53,26 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/baremetal/400.mu'>https://github.com/akkartik/mu/blob/main/baremetal/400.mu</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="PreProc">sig</span> <a href='101screen.subx.html#L3'>pixel</a> screen: (addr screen), x: int, y: int, color: int -<span id="L2" class="LineNr"> 2 </span><span class="PreProc">sig</span> <a href='102keyboard.subx.html#L3'>read-key</a> kbd: (addr keyboard)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: byte -<span id="L3" class="LineNr"> 3 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen: (addr screen), g: grapheme, x: int, y: int, color: int -<span id="L4" class="LineNr"> 4 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen: (addr screen)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int -<span id="L5" class="LineNr"> 5 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen: (addr screen), x: int, y: int -<span id="L6" class="LineNr"> 6 </span><span class="PreProc">sig</span> <a href='106stream.subx.html#L17'>clear-stream</a> f: (addr stream _) -<span id="L7" class="LineNr"> 7 </span><span class="PreProc">sig</span> <a href='106stream.subx.html#L56'>rewind-stream</a> f: (addr stream _) -<span id="L8" class="LineNr"> 8 </span><span class="PreProc">sig</span> <a href='108write.subx.html#L5'>write</a> f: (addr stream byte), s: (addr array byte) -<span id="L9" class="LineNr"> 9 </span><span class="PreProc">sig</span> <a href='115write-byte.subx.html#L6'>append-byte</a> f: (addr stream byte), n: int -<span id="L10" class="LineNr">10 </span><span class="PreProc">sig</span> <a href='112read-byte.subx.html#L9'>read-byte</a> s: (addr stream byte)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: byte -<span id="L11" class="LineNr">11 </span><span class="PreProc">sig</span> <a href='309stream.subx.html#L6'>stream-empty?</a> s: (addr stream _)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: boolean +<span id="L1" class="LineNr"> 1 </span><span class="muComment"># screen</span> +<span id="L2" class="LineNr"> 2 </span><span class="PreProc">sig</span> <a href='101screen.subx.html#L5'>pixel</a> screen: (addr screen), x: int, y: int, color: int +<span id="L3" class="LineNr"> 3 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen: (addr screen), g: grapheme, x: int, y: int, color: int +<span id="L4" class="LineNr"> 4 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen: (addr screen)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int +<span id="L5" class="LineNr"> 5 </span><span class="PreProc">sig</span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen: (addr screen), x: int, y: int +<span id="L6" class="LineNr"> 6 </span> +<span id="L7" class="LineNr"> 7 </span><span class="muComment"># keyboard</span> +<span id="L8" class="LineNr"> 8 </span><span class="PreProc">sig</span> <a href='102keyboard.subx.html#L6'>read-key</a> kbd: (addr keyboard)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: byte +<span id="L9" class="LineNr"> 9 </span> +<span id="L10" class="LineNr">10 </span><span class="muComment"># tests</span> +<span id="L11" class="LineNr">11 </span><span class="PreProc">sig</span> <a href='104test.subx.html#L5'>count-test-failure</a> +<span id="L12" class="LineNr">12 </span><span class="PreProc">sig</span> <a href='104test.subx.html#L17'>num-test-failures</a><span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int +<span id="L13" class="LineNr">13 </span> +<span id="L14" class="LineNr">14 </span><span class="muComment"># streams</span> +<span id="L15" class="LineNr">15 </span><span class="PreProc">sig</span> <a href='106stream.subx.html#L17'>clear-stream</a> f: (addr stream _) +<span id="L16" class="LineNr">16 </span><span class="PreProc">sig</span> <a href='106stream.subx.html#L56'>rewind-stream</a> f: (addr stream _) +<span id="L17" class="LineNr">17 </span><span class="PreProc">sig</span> <a href='108write.subx.html#L6'>write</a> f: (addr stream byte), s: (addr array byte) +<span id="L18" class="LineNr">18 </span><span class="PreProc">sig</span> <a href='115write-byte.subx.html#L7'>append-byte</a> f: (addr stream byte), n: int +<span id="L19" class="LineNr">19 </span><span class="PreProc">sig</span> <a href='112read-byte.subx.html#L10'>read-byte</a> s: (addr stream byte)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: byte +<span id="L20" class="LineNr">20 </span><span class="PreProc">sig</span> <a href='309stream.subx.html#L6'>stream-empty?</a> s: (addr stream _)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: boolean </pre> </body> </html> diff --git a/html/baremetal/403unicode.mu.html b/html/baremetal/403unicode.mu.html index b1118a7c..1b70148c 100644 --- a/html/baremetal/403unicode.mu.html +++ b/html/baremetal/403unicode.mu.html @@ -155,7 +155,7 @@ if ('onhashchange' in window) { <span id="L97" class="LineNr"> 97 </span> <span class="PreProc">break-if-=</span> <span id="L98" class="LineNr"> 98 </span> <span class="PreProc">return</span> <span class="Constant">0xffffffff</span> <span id="L99" class="LineNr"> 99 </span> <span class="Delimiter">}</span> -<span id="L100" class="LineNr">100 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='112read-byte.subx.html#L9'>read-byte</a> in +<span id="L100" class="LineNr">100 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='112read-byte.subx.html#L10'>read-byte</a> in <span id="L101" class="LineNr">101 </span> <span class="PreProc">var</span> num-trailers/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L102" class="LineNr">102 </span> $read-grapheme:compute-length: <span class="Delimiter">{</span> <span id="L103" class="LineNr">103 </span> <span class="muComment"># single byte: just return it</span> @@ -201,7 +201,7 @@ if ('onhashchange' in window) { <span id="L143" class="LineNr">143 </span> <span class="Delimiter">{</span> <span id="L144" class="LineNr">144 </span> compare num-trailers, <span class="Constant">0</span> <span id="L145" class="LineNr">145 </span> <span class="PreProc">break-if-<=</span> -<span id="L146" class="LineNr">146 </span> <span class="PreProc">var</span> tmp/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='112read-byte.subx.html#L9'>read-byte</a> in +<span id="L146" class="LineNr">146 </span> <span class="PreProc">var</span> tmp/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='112read-byte.subx.html#L10'>read-byte</a> in <span id="L147" class="LineNr">147 </span> <span class="PreProc">var</span> tmp2/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy tmp <span id="L148" class="LineNr">148 </span> tmp2 <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L159'>shift-left-bytes</a> tmp2, num-byte-shifts <span id="L149" class="LineNr">149 </span> result <span class="SpecialChar"><-</span> or tmp2 @@ -234,19 +234,19 @@ if ('onhashchange' in window) { <span id="L176" class="LineNr">176 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='403unicode.mu.html#L176'>write-grapheme</a></span> out: (addr stream byte), g: grapheme <span class="Delimiter">{</span> <span id="L177" class="LineNr">177 </span>$write-grapheme:body: <span class="Delimiter">{</span> <span id="L178" class="LineNr">178 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy g -<span id="L179" class="LineNr">179 </span> <a href='115write-byte.subx.html#L6'>append-byte</a> out, c <span class="muComment"># first byte is always written</span> +<span id="L179" class="LineNr">179 </span> <a href='115write-byte.subx.html#L7'>append-byte</a> out, c <span class="muComment"># first byte is always written</span> <span id="L180" class="LineNr">180 </span> c <span class="SpecialChar"><-</span> shift-right <span class="Constant">8</span> <span id="L181" class="LineNr">181 </span> compare c, <span class="Constant">0</span> <span id="L182" class="LineNr">182 </span> <span class="PreProc">break-if-=</span> $write-grapheme:body -<span id="L183" class="LineNr">183 </span> <a href='115write-byte.subx.html#L6'>append-byte</a> out, c +<span id="L183" class="LineNr">183 </span> <a href='115write-byte.subx.html#L7'>append-byte</a> out, c <span id="L184" class="LineNr">184 </span> c <span class="SpecialChar"><-</span> shift-right <span class="Constant">8</span> <span id="L185" class="LineNr">185 </span> compare c, <span class="Constant">0</span> <span id="L186" class="LineNr">186 </span> <span class="PreProc">break-if-=</span> $write-grapheme:body -<span id="L187" class="LineNr">187 </span> <a href='115write-byte.subx.html#L6'>append-byte</a> out, c +<span id="L187" class="LineNr">187 </span> <a href='115write-byte.subx.html#L7'>append-byte</a> out, c <span id="L188" class="LineNr">188 </span> c <span class="SpecialChar"><-</span> shift-right <span class="Constant">8</span> <span id="L189" class="LineNr">189 </span> compare c, <span class="Constant">0</span> <span id="L190" class="LineNr">190 </span> <span class="PreProc">break-if-=</span> $write-grapheme:body -<span id="L191" class="LineNr">191 </span> <a href='115write-byte.subx.html#L6'>append-byte</a> out, c +<span id="L191" class="LineNr">191 </span> <a href='115write-byte.subx.html#L7'>append-byte</a> out, c <span id="L192" class="LineNr">192 </span><span class="Delimiter">}</span> <span id="L193" class="LineNr">193 </span><span class="Delimiter">}</span> </pre> diff --git a/html/baremetal/500clear-screen.mu.html b/html/baremetal/500clear-screen.mu.html new file mode 100644 index 00000000..e78089e6 --- /dev/null +++ b/html/baremetal/500clear-screen.mu.html @@ -0,0 +1,79 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - baremetal/500clear-screen.mu</title> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal-light"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; } +body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } +a { color:inherit; } +* { font-size:12pt; font-size: 1em; } +.PreProc { color: #c000c0; } +.LineNr { } +.Constant { color: #008787; } +.SpecialChar { color: #d70000; } +.Delimiter { color: #c000c0; } +.muFunction { color: #af5f00; text-decoration: underline; } +.muComment { color: #005faf; } +--> +</style> + +<script type='text/javascript'> +<!-- + +/* function to open any folds containing a jumped-to line before jumping to it */ +function JumpToLine() +{ + var lineNum; + lineNum = window.location.hash; + lineNum = lineNum.substr(1); /* strip off '#' */ + + if (lineNum.indexOf('L') == -1) { + lineNum = 'L'+lineNum; + } + var lineElem = document.getElementById(lineNum); + /* Always jump to new location even if the line was hidden inside a fold, or + * we corrected the raw number to a line ID. + */ + if (lineElem) { + lineElem.scrollIntoView(true); + } + return true; +} +if ('onhashchange' in window) { + window.onhashchange = JumpToLine; +} + +--> +</script> +</head> +<body onload='JumpToLine();'> +<a href='https://github.com/akkartik/mu/blob/main/baremetal/500clear-screen.mu'>https://github.com/akkartik/mu/blob/main/baremetal/500clear-screen.mu</a> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='500clear-screen.mu.html#L1'>clear-screen</a></span> screen: (addr screen) <span class="Delimiter">{</span> +<span id="L2" class="LineNr"> 2 </span> <span class="PreProc">var</span> y/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L3" class="LineNr"> 3 </span> <span class="Delimiter">{</span> +<span id="L4" class="LineNr"> 4 </span> compare y, <span class="Constant">0x300</span> <span class="muComment"># 768</span> +<span id="L5" class="LineNr"> 5 </span> <span class="PreProc">break-if->=</span> +<span id="L6" class="LineNr"> 6 </span> <span class="PreProc">var</span> x/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L7" class="LineNr"> 7 </span> <span class="Delimiter">{</span> +<span id="L8" class="LineNr"> 8 </span> compare x, <span class="Constant">0x400</span> <span class="muComment"># 1024</span> +<span id="L9" class="LineNr"> 9 </span> <span class="PreProc">break-if->=</span> +<span id="L10" class="LineNr">10 </span> <a href='101screen.subx.html#L5'>pixel</a> <span class="Constant">0</span>, x, y, <span class="Constant">0</span> <span class="muComment"># black</span> +<span id="L11" class="LineNr">11 </span> x <span class="SpecialChar"><-</span> increment +<span id="L12" class="LineNr">12 </span> <span class="PreProc">loop</span> +<span id="L13" class="LineNr">13 </span> <span class="Delimiter">}</span> +<span id="L14" class="LineNr">14 </span> y <span class="SpecialChar"><-</span> increment +<span id="L15" class="LineNr">15 </span> <span class="PreProc">loop</span> +<span id="L16" class="LineNr">16 </span> <span class="Delimiter">}</span> +<span id="L17" class="LineNr">17 </span><span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/baremetal/501draw-text.mu.html b/html/baremetal/501draw-text.mu.html index c877d08d..d57d46cb 100644 --- a/html/baremetal/501draw-text.mu.html +++ b/html/baremetal/501draw-text.mu.html @@ -61,60 +61,60 @@ if ('onhashchange' in window) { <span id="L3" class="LineNr"> 3 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L3'>cursor-left</a></span> screen: (addr screen) <span class="Delimiter">{</span> <span id="L4" class="LineNr"> 4 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L5" class="LineNr"> 5 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L6" class="LineNr"> 6 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L6" class="LineNr"> 6 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L7" class="LineNr"> 7 </span> compare cursor-x, <span class="Constant">0</span> <span id="L8" class="LineNr"> 8 </span> <span class="Delimiter">{</span> <span id="L9" class="LineNr"> 9 </span> <span class="PreProc">break-if-></span> <span id="L10" class="LineNr"> 10 </span> <span class="PreProc">return</span> <span id="L11" class="LineNr"> 11 </span> <span class="Delimiter">}</span> <span id="L12" class="LineNr"> 12 </span> cursor-x <span class="SpecialChar"><-</span> subtract <span class="Constant">8</span> <span class="muComment"># font-width</span> -<span id="L13" class="LineNr"> 13 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, cursor-x, cursor-y +<span id="L13" class="LineNr"> 13 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, cursor-x, cursor-y <span id="L14" class="LineNr"> 14 </span><span class="Delimiter">}</span> <span id="L15" class="LineNr"> 15 </span> <span id="L16" class="LineNr"> 16 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L16'>cursor-right</a></span> screen: (addr screen) <span class="Delimiter">{</span> <span id="L17" class="LineNr"> 17 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L18" class="LineNr"> 18 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L19" class="LineNr"> 19 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L19" class="LineNr"> 19 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L20" class="LineNr"> 20 </span> compare cursor-x, <span class="Constant">0x400</span> <span class="muComment"># screen-width</span> <span id="L21" class="LineNr"> 21 </span> <span class="Delimiter">{</span> <span id="L22" class="LineNr"> 22 </span> <span class="PreProc">break-if-<</span> <span id="L23" class="LineNr"> 23 </span> <span class="PreProc">return</span> <span id="L24" class="LineNr"> 24 </span> <span class="Delimiter">}</span> <span id="L25" class="LineNr"> 25 </span> cursor-x <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> -<span id="L26" class="LineNr"> 26 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, cursor-x, cursor-y +<span id="L26" class="LineNr"> 26 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, cursor-x, cursor-y <span id="L27" class="LineNr"> 27 </span><span class="Delimiter">}</span> <span id="L28" class="LineNr"> 28 </span> <span id="L29" class="LineNr"> 29 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L29'>cursor-up</a></span> screen: (addr screen) <span class="Delimiter">{</span> <span id="L30" class="LineNr"> 30 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L31" class="LineNr"> 31 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L32" class="LineNr"> 32 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L32" class="LineNr"> 32 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L33" class="LineNr"> 33 </span> compare cursor-y, <span class="Constant">0</span> <span id="L34" class="LineNr"> 34 </span> <span class="Delimiter">{</span> <span id="L35" class="LineNr"> 35 </span> <span class="PreProc">break-if-></span> <span id="L36" class="LineNr"> 36 </span> <span class="PreProc">return</span> <span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span> <span id="L38" class="LineNr"> 38 </span> cursor-y <span class="SpecialChar"><-</span> subtract <span class="Constant">0x10</span> <span class="muComment"># screen-height</span> -<span id="L39" class="LineNr"> 39 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, cursor-x, cursor-y +<span id="L39" class="LineNr"> 39 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, cursor-x, cursor-y <span id="L40" class="LineNr"> 40 </span><span class="Delimiter">}</span> <span id="L41" class="LineNr"> 41 </span> <span id="L42" class="LineNr"> 42 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L42'>cursor-down</a></span> screen: (addr screen) <span class="Delimiter">{</span> <span id="L43" class="LineNr"> 43 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L44" class="LineNr"> 44 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L45" class="LineNr"> 45 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L45" class="LineNr"> 45 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L46" class="LineNr"> 46 </span> compare cursor-y, <span class="Constant">0x300</span> <span class="muComment"># screen-height</span> <span id="L47" class="LineNr"> 47 </span> <span class="Delimiter">{</span> <span id="L48" class="LineNr"> 48 </span> <span class="PreProc">break-if-<</span> <span id="L49" class="LineNr"> 49 </span> <span class="PreProc">return</span> <span id="L50" class="LineNr"> 50 </span> <span class="Delimiter">}</span> <span id="L51" class="LineNr"> 51 </span> cursor-y <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># screen-height</span> -<span id="L52" class="LineNr"> 52 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, cursor-x, cursor-y +<span id="L52" class="LineNr"> 52 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, cursor-x, cursor-y <span id="L53" class="LineNr"> 53 </span><span class="Delimiter">}</span> <span id="L54" class="LineNr"> 54 </span> <span id="L55" class="LineNr"> 55 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L55'>draw-grapheme-at-cursor</a></span> screen: (addr screen), g: grapheme, color: int <span class="Delimiter">{</span> <span id="L56" class="LineNr"> 56 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L57" class="LineNr"> 57 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L58" class="LineNr"> 58 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen -<span id="L59" class="LineNr"> 59 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen, g, cursor-x, cursor-y, color +<span id="L58" class="LineNr"> 58 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen +<span id="L59" class="LineNr"> 59 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen, g, cursor-x, cursor-y, color <span id="L60" class="LineNr"> 60 </span><span class="Delimiter">}</span> <span id="L61" class="LineNr"> 61 </span> <span id="L62" class="LineNr"> 62 </span><span class="muComment"># draw a single line of text from x, y to xmax</span> @@ -123,7 +123,7 @@ if ('onhashchange' in window) { <span id="L65" class="LineNr"> 65 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L65'>draw-text-rightward</a></span> screen: (addr screen), text: (addr array byte), x: int, xmax: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span> <span id="L66" class="LineNr"> 66 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) <span id="L67" class="LineNr"> 67 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage -<span id="L68" class="LineNr"> 68 </span> <a href='108write.subx.html#L5'>write</a> stream, text +<span id="L68" class="LineNr"> 68 </span> <a href='108write.subx.html#L6'>write</a> stream, text <span id="L69" class="LineNr"> 69 </span> <span class="muComment"># check if we have enough space</span> <span id="L70" class="LineNr"> 70 </span> <span class="PreProc">var</span> xcurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy x <span id="L71" class="LineNr"> 71 </span> <span class="Delimiter">{</span> @@ -147,18 +147,18 @@ if ('onhashchange' in window) { <span id="L89" class="LineNr"> 89 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream <span id="L90" class="LineNr"> 90 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> <span id="L91" class="LineNr"> 91 </span> <span class="PreProc">break-if-=</span> -<span id="L92" class="LineNr"> 92 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen, g, xcurr, y, color +<span id="L92" class="LineNr"> 92 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen, g, xcurr, y, color <span id="L93" class="LineNr"> 93 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> <span id="L94" class="LineNr"> 94 </span> <span class="PreProc">loop</span> <span id="L95" class="LineNr"> 95 </span> <span class="Delimiter">}</span> -<span id="L96" class="LineNr"> 96 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, xcurr, y +<span id="L96" class="LineNr"> 96 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, xcurr, y <span id="L97" class="LineNr"> 97 </span> <span class="PreProc">return</span> xcurr <span id="L98" class="LineNr"> 98 </span><span class="Delimiter">}</span> <span id="L99" class="LineNr"> 99 </span> <span id="L100" class="LineNr">100 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L100'>draw-text-rightward-from-cursor</a></span> screen: (addr screen), text: (addr array byte), xmax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span> <span id="L101" class="LineNr">101 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L102" class="LineNr">102 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L103" class="LineNr">103 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L103" class="LineNr">103 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L104" class="LineNr">104 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L65'>draw-text-rightward</a> screen, text, cursor-x, xmax, cursor-y, color <span id="L105" class="LineNr">105 </span> <span class="PreProc">return</span> result <span id="L106" class="LineNr">106 </span><span class="Delimiter">}</span> @@ -170,7 +170,7 @@ if ('onhashchange' in window) { <span id="L112" class="LineNr">112 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L112'>draw-text-wrapping-right-then-down</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, x: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> <span id="L113" class="LineNr">113 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) <span id="L114" class="LineNr">114 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage -<span id="L115" class="LineNr">115 </span> <a href='108write.subx.html#L5'>write</a> stream, text +<span id="L115" class="LineNr">115 </span> <a href='108write.subx.html#L6'>write</a> stream, text <span id="L116" class="LineNr">116 </span> <span class="muComment"># check if we have enough space</span> <span id="L117" class="LineNr">117 </span> <span class="PreProc">var</span> xcurr/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy x <span id="L118" class="LineNr">118 </span> <span class="PreProc">var</span> ycurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy y @@ -202,7 +202,7 @@ if ('onhashchange' in window) { <span id="L144" class="LineNr">144 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream <span id="L145" class="LineNr">145 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> <span id="L146" class="LineNr">146 </span> <span class="PreProc">break-if-=</span> -<span id="L147" class="LineNr">147 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen, g, xcurr, ycurr, color +<span id="L147" class="LineNr">147 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen, g, xcurr, ycurr, color <span id="L148" class="LineNr">148 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> <span id="L149" class="LineNr">149 </span> compare xcurr, xmax <span id="L150" class="LineNr">150 </span> <span class="Delimiter">{</span> @@ -212,7 +212,7 @@ if ('onhashchange' in window) { <span id="L154" class="LineNr">154 </span> <span class="Delimiter">}</span> <span id="L155" class="LineNr">155 </span> <span class="PreProc">loop</span> <span id="L156" class="LineNr">156 </span> <span class="Delimiter">}</span> -<span id="L157" class="LineNr">157 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, xcurr, ycurr +<span id="L157" class="LineNr">157 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, xcurr, ycurr <span id="L158" class="LineNr">158 </span> <span class="PreProc">return</span> xcurr, ycurr <span id="L159" class="LineNr">159 </span><span class="Delimiter">}</span> <span id="L160" class="LineNr">160 </span> @@ -223,10 +223,10 @@ if ('onhashchange' in window) { <span id="L165" class="LineNr">165 </span> <span class="PreProc">return</span> cursor-x, cursor-y <span id="L166" class="LineNr">166 </span><span class="Delimiter">}</span> <span id="L167" class="LineNr">167 </span> -<span id="L168" class="LineNr">168 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L168'>draw-text-wrapping-right-then-down-from-cursor</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> +<span id="L168" class="LineNr">168 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L168'>draw-text-wrapping-right-then-down-from-cursor</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, color: int <span class="Delimiter">{</span> <span id="L169" class="LineNr">169 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L170" class="LineNr">170 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L171" class="LineNr">171 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen +<span id="L171" class="LineNr">171 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen <span id="L172" class="LineNr">172 </span> <span class="PreProc">var</span> end-x/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy cursor-x <span id="L173" class="LineNr">173 </span> end-x <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> <span id="L174" class="LineNr">174 </span> compare end-x, xmax @@ -236,146 +236,137 @@ if ('onhashchange' in window) { <span id="L178" class="LineNr">178 </span> cursor-y <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> <span id="L179" class="LineNr">179 </span> <span class="Delimiter">}</span> <span id="L180" class="LineNr">180 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L112'>draw-text-wrapping-right-then-down</a> screen, text, xmin, ymin, xmax, ymax, cursor-x, cursor-y, color -<span id="L181" class="LineNr">181 </span> <span class="PreProc">return</span> cursor-x, cursor-y -<span id="L182" class="LineNr">182 </span><span class="Delimiter">}</span> -<span id="L183" class="LineNr">183 </span> -<span id="L184" class="LineNr">184 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L184'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> -<span id="L185" class="LineNr">185 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L186" class="LineNr">186 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L187" class="LineNr">187 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L168'>draw-text-wrapping-right-then-down-from-cursor</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, color <span class="muComment"># 1024, 768</span> -<span id="L188" class="LineNr">188 </span> <span class="PreProc">return</span> cursor-x, cursor-y -<span id="L189" class="LineNr">189 </span><span class="Delimiter">}</span> -<span id="L190" class="LineNr">190 </span> -<span id="L191" class="LineNr">191 </span><span class="muComment">## Text direction: down then right</span> -<span id="L192" class="LineNr">192 </span> -<span id="L193" class="LineNr">193 </span><span class="muComment"># draw a single line of text vertically from x, y to ymax</span> -<span id="L194" class="LineNr">194 </span><span class="muComment"># return the next 'y' coordinate</span> -<span id="L195" class="LineNr">195 </span><span class="muComment"># if there isn't enough space, return 0 without modifying the screen</span> -<span id="L196" class="LineNr">196 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L196'>draw-text-downward</a></span> screen: (addr screen), text: (addr array byte), x: int, y: int, ymax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span> -<span id="L197" class="LineNr">197 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) -<span id="L198" class="LineNr">198 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage -<span id="L199" class="LineNr">199 </span> <a href='108write.subx.html#L5'>write</a> stream, text -<span id="L200" class="LineNr">200 </span> <span class="muComment"># check if we have enough space</span> -<span id="L201" class="LineNr">201 </span> <span class="PreProc">var</span> ycurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy y -<span id="L202" class="LineNr">202 </span> <span class="Delimiter">{</span> -<span id="L203" class="LineNr">203 </span> compare ycurr, ymax -<span id="L204" class="LineNr">204 </span> <span class="PreProc">break-if-></span> -<span id="L205" class="LineNr">205 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream -<span id="L206" class="LineNr">206 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> -<span id="L207" class="LineNr">207 </span> <span class="PreProc">break-if-=</span> -<span id="L208" class="LineNr">208 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> -<span id="L209" class="LineNr">209 </span> <span class="PreProc">loop</span> -<span id="L210" class="LineNr">210 </span> <span class="Delimiter">}</span> -<span id="L211" class="LineNr">211 </span> compare ycurr, ymax -<span id="L212" class="LineNr">212 </span> <span class="Delimiter">{</span> -<span id="L213" class="LineNr">213 </span> <span class="PreProc">break-if-<=</span> -<span id="L214" class="LineNr">214 </span> <span class="PreProc">return</span> <span class="Constant">0</span> -<span id="L215" class="LineNr">215 </span> <span class="Delimiter">}</span> -<span id="L216" class="LineNr">216 </span> <span class="muComment"># we do; actually draw</span> -<span id="L217" class="LineNr">217 </span> <a href='106stream.subx.html#L56'>rewind-stream</a> stream -<span id="L218" class="LineNr">218 </span> ycurr <span class="SpecialChar"><-</span> copy y -<span id="L219" class="LineNr">219 </span> <span class="Delimiter">{</span> -<span id="L220" class="LineNr">220 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream -<span id="L221" class="LineNr">221 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> -<span id="L222" class="LineNr">222 </span> <span class="PreProc">break-if-=</span> -<span id="L223" class="LineNr">223 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen, g, x, ycurr, color -<span id="L224" class="LineNr">224 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> -<span id="L225" class="LineNr">225 </span> <span class="PreProc">loop</span> -<span id="L226" class="LineNr">226 </span> <span class="Delimiter">}</span> -<span id="L227" class="LineNr">227 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, x, ycurr -<span id="L228" class="LineNr">228 </span> <span class="PreProc">return</span> ycurr -<span id="L229" class="LineNr">229 </span><span class="Delimiter">}</span> -<span id="L230" class="LineNr">230 </span> -<span id="L231" class="LineNr">231 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L231'>draw-text-downward-from-cursor</a></span> screen: (addr screen), text: (addr array byte), ymax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span> -<span id="L232" class="LineNr">232 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L233" class="LineNr">233 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L234" class="LineNr">234 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen -<span id="L235" class="LineNr">235 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L196'>draw-text-downward</a> screen, text, cursor-x, cursor-y, ymax, color -<span id="L236" class="LineNr">236 </span> <span class="PreProc">return</span> result -<span id="L237" class="LineNr">237 </span><span class="Delimiter">}</span> -<span id="L238" class="LineNr">238 </span> -<span id="L239" class="LineNr">239 </span><span class="muComment"># draw text down and right in the rectangle from (xmin, ymin) to (xmax, ymax), starting from (x, y), wrapping as necessary</span> -<span id="L240" class="LineNr">240 </span><span class="muComment"># return the next (x, y) coordinate in raster order where drawing stopped</span> -<span id="L241" class="LineNr">241 </span><span class="muComment"># that way the caller can draw more if given the same min and max bounding-box.</span> -<span id="L242" class="LineNr">242 </span><span class="muComment"># if there isn't enough space, return 0 without modifying the screen</span> -<span id="L243" class="LineNr">243 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L243'>draw-text-wrapping-down-then-right</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, x: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> -<span id="L244" class="LineNr">244 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) -<span id="L245" class="LineNr">245 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage -<span id="L246" class="LineNr">246 </span> <a href='108write.subx.html#L5'>write</a> stream, text -<span id="L247" class="LineNr">247 </span> <span class="muComment"># check if we have enough space</span> -<span id="L248" class="LineNr">248 </span> <span class="PreProc">var</span> xcurr/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy x -<span id="L249" class="LineNr">249 </span> <span class="PreProc">var</span> ycurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy y -<span id="L250" class="LineNr">250 </span> <span class="Delimiter">{</span> -<span id="L251" class="LineNr">251 </span> compare xcurr, xmax -<span id="L252" class="LineNr">252 </span> <span class="PreProc">break-if->=</span> -<span id="L253" class="LineNr">253 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream -<span id="L254" class="LineNr">254 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> -<span id="L255" class="LineNr">255 </span> <span class="PreProc">break-if-=</span> -<span id="L256" class="LineNr">256 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> -<span id="L257" class="LineNr">257 </span> compare ycurr, ymax -<span id="L258" class="LineNr">258 </span> <span class="Delimiter">{</span> -<span id="L259" class="LineNr">259 </span> <span class="PreProc">break-if-<</span> -<span id="L260" class="LineNr">260 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> -<span id="L261" class="LineNr">261 </span> ycurr <span class="SpecialChar"><-</span> copy ymin -<span id="L262" class="LineNr">262 </span> <span class="Delimiter">}</span> -<span id="L263" class="LineNr">263 </span> <span class="PreProc">loop</span> +<span id="L181" class="LineNr">181 </span><span class="Delimiter">}</span> +<span id="L182" class="LineNr">182 </span> +<span id="L183" class="LineNr">183 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L183'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), color: int <span class="Delimiter">{</span> +<span id="L184" class="LineNr">184 </span> <a href='501draw-text.mu.html#L168'>draw-text-wrapping-right-then-down-from-cursor</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, color <span class="muComment"># 1024, 768</span> +<span id="L185" class="LineNr">185 </span><span class="Delimiter">}</span> +<span id="L186" class="LineNr">186 </span> +<span id="L187" class="LineNr">187 </span><span class="muComment">## Text direction: down then right</span> +<span id="L188" class="LineNr">188 </span> +<span id="L189" class="LineNr">189 </span><span class="muComment"># draw a single line of text vertically from x, y to ymax</span> +<span id="L190" class="LineNr">190 </span><span class="muComment"># return the next 'y' coordinate</span> +<span id="L191" class="LineNr">191 </span><span class="muComment"># if there isn't enough space, return 0 without modifying the screen</span> +<span id="L192" class="LineNr">192 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L192'>draw-text-downward</a></span> screen: (addr screen), text: (addr array byte), x: int, y: int, ymax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span> +<span id="L193" class="LineNr">193 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) +<span id="L194" class="LineNr">194 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage +<span id="L195" class="LineNr">195 </span> <a href='108write.subx.html#L6'>write</a> stream, text +<span id="L196" class="LineNr">196 </span> <span class="muComment"># check if we have enough space</span> +<span id="L197" class="LineNr">197 </span> <span class="PreProc">var</span> ycurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy y +<span id="L198" class="LineNr">198 </span> <span class="Delimiter">{</span> +<span id="L199" class="LineNr">199 </span> compare ycurr, ymax +<span id="L200" class="LineNr">200 </span> <span class="PreProc">break-if-></span> +<span id="L201" class="LineNr">201 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream +<span id="L202" class="LineNr">202 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> +<span id="L203" class="LineNr">203 </span> <span class="PreProc">break-if-=</span> +<span id="L204" class="LineNr">204 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> +<span id="L205" class="LineNr">205 </span> <span class="PreProc">loop</span> +<span id="L206" class="LineNr">206 </span> <span class="Delimiter">}</span> +<span id="L207" class="LineNr">207 </span> compare ycurr, ymax +<span id="L208" class="LineNr">208 </span> <span class="Delimiter">{</span> +<span id="L209" class="LineNr">209 </span> <span class="PreProc">break-if-<=</span> +<span id="L210" class="LineNr">210 </span> <span class="PreProc">return</span> <span class="Constant">0</span> +<span id="L211" class="LineNr">211 </span> <span class="Delimiter">}</span> +<span id="L212" class="LineNr">212 </span> <span class="muComment"># we do; actually draw</span> +<span id="L213" class="LineNr">213 </span> <a href='106stream.subx.html#L56'>rewind-stream</a> stream +<span id="L214" class="LineNr">214 </span> ycurr <span class="SpecialChar"><-</span> copy y +<span id="L215" class="LineNr">215 </span> <span class="Delimiter">{</span> +<span id="L216" class="LineNr">216 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream +<span id="L217" class="LineNr">217 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> +<span id="L218" class="LineNr">218 </span> <span class="PreProc">break-if-=</span> +<span id="L219" class="LineNr">219 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen, g, x, ycurr, color +<span id="L220" class="LineNr">220 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> +<span id="L221" class="LineNr">221 </span> <span class="PreProc">loop</span> +<span id="L222" class="LineNr">222 </span> <span class="Delimiter">}</span> +<span id="L223" class="LineNr">223 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, x, ycurr +<span id="L224" class="LineNr">224 </span> <span class="PreProc">return</span> ycurr +<span id="L225" class="LineNr">225 </span><span class="Delimiter">}</span> +<span id="L226" class="LineNr">226 </span> +<span id="L227" class="LineNr">227 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L227'>draw-text-downward-from-cursor</a></span> screen: (addr screen), text: (addr array byte), ymax: int, color: int <span class="Delimiter">{</span> +<span id="L228" class="LineNr">228 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L229" class="LineNr">229 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L230" class="LineNr">230 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen +<span id="L231" class="LineNr">231 </span> <span class="PreProc">var</span> result/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L192'>draw-text-downward</a> screen, text, cursor-x, cursor-y, ymax, color +<span id="L232" class="LineNr">232 </span><span class="Delimiter">}</span> +<span id="L233" class="LineNr">233 </span> +<span id="L234" class="LineNr">234 </span><span class="muComment"># draw text down and right in the rectangle from (xmin, ymin) to (xmax, ymax), starting from (x, y), wrapping as necessary</span> +<span id="L235" class="LineNr">235 </span><span class="muComment"># return the next (x, y) coordinate in raster order where drawing stopped</span> +<span id="L236" class="LineNr">236 </span><span class="muComment"># that way the caller can draw more if given the same min and max bounding-box.</span> +<span id="L237" class="LineNr">237 </span><span class="muComment"># if there isn't enough space, return 0 without modifying the screen</span> +<span id="L238" class="LineNr">238 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L238'>draw-text-wrapping-down-then-right</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, x: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> +<span id="L239" class="LineNr">239 </span> <span class="PreProc">var</span> stream-storage: (stream byte <span class="Constant">0x100</span>) +<span id="L240" class="LineNr">240 </span> <span class="PreProc">var</span> stream/<span class="Constant">esi</span>: (addr stream byte) <span class="SpecialChar"><-</span> address stream-storage +<span id="L241" class="LineNr">241 </span> <a href='108write.subx.html#L6'>write</a> stream, text +<span id="L242" class="LineNr">242 </span> <span class="muComment"># check if we have enough space</span> +<span id="L243" class="LineNr">243 </span> <span class="PreProc">var</span> xcurr/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy x +<span id="L244" class="LineNr">244 </span> <span class="PreProc">var</span> ycurr/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy y +<span id="L245" class="LineNr">245 </span> <span class="Delimiter">{</span> +<span id="L246" class="LineNr">246 </span> compare xcurr, xmax +<span id="L247" class="LineNr">247 </span> <span class="PreProc">break-if->=</span> +<span id="L248" class="LineNr">248 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream +<span id="L249" class="LineNr">249 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> +<span id="L250" class="LineNr">250 </span> <span class="PreProc">break-if-=</span> +<span id="L251" class="LineNr">251 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> +<span id="L252" class="LineNr">252 </span> compare ycurr, ymax +<span id="L253" class="LineNr">253 </span> <span class="Delimiter">{</span> +<span id="L254" class="LineNr">254 </span> <span class="PreProc">break-if-<</span> +<span id="L255" class="LineNr">255 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> +<span id="L256" class="LineNr">256 </span> ycurr <span class="SpecialChar"><-</span> copy ymin +<span id="L257" class="LineNr">257 </span> <span class="Delimiter">}</span> +<span id="L258" class="LineNr">258 </span> <span class="PreProc">loop</span> +<span id="L259" class="LineNr">259 </span> <span class="Delimiter">}</span> +<span id="L260" class="LineNr">260 </span> compare xcurr, xmax +<span id="L261" class="LineNr">261 </span> <span class="Delimiter">{</span> +<span id="L262" class="LineNr">262 </span> <span class="PreProc">break-if-<</span> +<span id="L263" class="LineNr">263 </span> <span class="PreProc">return</span> <span class="Constant">0</span>, <span class="Constant">0</span> <span id="L264" class="LineNr">264 </span> <span class="Delimiter">}</span> -<span id="L265" class="LineNr">265 </span> compare xcurr, xmax -<span id="L266" class="LineNr">266 </span> <span class="Delimiter">{</span> -<span id="L267" class="LineNr">267 </span> <span class="PreProc">break-if-<</span> -<span id="L268" class="LineNr">268 </span> <span class="PreProc">return</span> <span class="Constant">0</span>, <span class="Constant">0</span> -<span id="L269" class="LineNr">269 </span> <span class="Delimiter">}</span> -<span id="L270" class="LineNr">270 </span> <span class="muComment"># we do; actually draw</span> -<span id="L271" class="LineNr">271 </span> <a href='106stream.subx.html#L56'>rewind-stream</a> stream -<span id="L272" class="LineNr">272 </span> xcurr <span class="SpecialChar"><-</span> copy x -<span id="L273" class="LineNr">273 </span> ycurr <span class="SpecialChar"><-</span> copy y -<span id="L274" class="LineNr">274 </span> <span class="Delimiter">{</span> -<span id="L275" class="LineNr">275 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream -<span id="L276" class="LineNr">276 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> -<span id="L277" class="LineNr">277 </span> <span class="PreProc">break-if-=</span> -<span id="L278" class="LineNr">278 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> screen, g, xcurr, ycurr, color -<span id="L279" class="LineNr">279 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> -<span id="L280" class="LineNr">280 </span> compare ycurr, ymax -<span id="L281" class="LineNr">281 </span> <span class="Delimiter">{</span> -<span id="L282" class="LineNr">282 </span> <span class="PreProc">break-if-<</span> -<span id="L283" class="LineNr">283 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> -<span id="L284" class="LineNr">284 </span> ycurr <span class="SpecialChar"><-</span> copy ymin -<span id="L285" class="LineNr">285 </span> <span class="Delimiter">}</span> -<span id="L286" class="LineNr">286 </span> <span class="PreProc">loop</span> -<span id="L287" class="LineNr">287 </span> <span class="Delimiter">}</span> -<span id="L288" class="LineNr">288 </span> <a href='103grapheme.subx.html#L86'>set-cursor-position</a> screen, xcurr, ycurr -<span id="L289" class="LineNr">289 </span> <span class="PreProc">return</span> xcurr, ycurr -<span id="L290" class="LineNr">290 </span><span class="Delimiter">}</span> -<span id="L291" class="LineNr">291 </span> -<span id="L292" class="LineNr">292 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L292'>draw-text-wrapping-down-then-right-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), x: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> -<span id="L293" class="LineNr">293 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L294" class="LineNr">294 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L295" class="LineNr">295 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L243'>draw-text-wrapping-down-then-right</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, x, y, color <span class="muComment"># 1024, 768</span> -<span id="L296" class="LineNr">296 </span> <span class="PreProc">return</span> cursor-x, cursor-y -<span id="L297" class="LineNr">297 </span><span class="Delimiter">}</span> -<span id="L298" class="LineNr">298 </span> -<span id="L299" class="LineNr">299 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L299'>draw-text-wrapping-down-then-right-from-cursor</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> -<span id="L300" class="LineNr">300 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L301" class="LineNr">301 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L302" class="LineNr">302 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L73'>cursor-position</a> screen -<span id="L303" class="LineNr">303 </span> <span class="PreProc">var</span> end-y/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy cursor-y -<span id="L304" class="LineNr">304 </span> end-y <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> -<span id="L305" class="LineNr">305 </span> compare end-y, ymax -<span id="L306" class="LineNr">306 </span> <span class="Delimiter">{</span> -<span id="L307" class="LineNr">307 </span> <span class="PreProc">break-if-<</span> -<span id="L308" class="LineNr">308 </span> cursor-x <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> -<span id="L309" class="LineNr">309 </span> cursor-y <span class="SpecialChar"><-</span> copy ymin -<span id="L310" class="LineNr">310 </span> <span class="Delimiter">}</span> -<span id="L311" class="LineNr">311 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L243'>draw-text-wrapping-down-then-right</a> screen, text, xmin, ymin, xmax, ymax, cursor-x, cursor-y, color -<span id="L312" class="LineNr">312 </span> <span class="PreProc">return</span> cursor-x, cursor-y -<span id="L313" class="LineNr">313 </span><span class="Delimiter">}</span> -<span id="L314" class="LineNr">314 </span> -<span id="L315" class="LineNr">315 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L315'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> -<span id="L316" class="LineNr">316 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L317" class="LineNr">317 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> -<span id="L318" class="LineNr">318 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L299'>draw-text-wrapping-down-then-right-from-cursor</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, color <span class="muComment"># 1024, 768</span> -<span id="L319" class="LineNr">319 </span> <span class="PreProc">return</span> cursor-x, cursor-y -<span id="L320" class="LineNr">320 </span><span class="Delimiter">}</span> +<span id="L265" class="LineNr">265 </span> <span class="muComment"># we do; actually draw</span> +<span id="L266" class="LineNr">266 </span> <a href='106stream.subx.html#L56'>rewind-stream</a> stream +<span id="L267" class="LineNr">267 </span> xcurr <span class="SpecialChar"><-</span> copy x +<span id="L268" class="LineNr">268 </span> ycurr <span class="SpecialChar"><-</span> copy y +<span id="L269" class="LineNr">269 </span> <span class="Delimiter">{</span> +<span id="L270" class="LineNr">270 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> <a href='403unicode.mu.html#L92'>read-grapheme</a> stream +<span id="L271" class="LineNr">271 </span> compare g, <span class="Constant">0xffffffff</span> <span class="muComment"># end-of-file</span> +<span id="L272" class="LineNr">272 </span> <span class="PreProc">break-if-=</span> +<span id="L273" class="LineNr">273 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> screen, g, xcurr, ycurr, color +<span id="L274" class="LineNr">274 </span> ycurr <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> +<span id="L275" class="LineNr">275 </span> compare ycurr, ymax +<span id="L276" class="LineNr">276 </span> <span class="Delimiter">{</span> +<span id="L277" class="LineNr">277 </span> <span class="PreProc">break-if-<</span> +<span id="L278" class="LineNr">278 </span> xcurr <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> +<span id="L279" class="LineNr">279 </span> ycurr <span class="SpecialChar"><-</span> copy ymin +<span id="L280" class="LineNr">280 </span> <span class="Delimiter">}</span> +<span id="L281" class="LineNr">281 </span> <span class="PreProc">loop</span> +<span id="L282" class="LineNr">282 </span> <span class="Delimiter">}</span> +<span id="L283" class="LineNr">283 </span> <a href='103grapheme.subx.html#L90'>set-cursor-position</a> screen, xcurr, ycurr +<span id="L284" class="LineNr">284 </span> <span class="PreProc">return</span> xcurr, ycurr +<span id="L285" class="LineNr">285 </span><span class="Delimiter">}</span> +<span id="L286" class="LineNr">286 </span> +<span id="L287" class="LineNr">287 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L287'>draw-text-wrapping-down-then-right-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), x: int, y: int, color: int<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int, _/<span class="Constant">ecx</span>: int <span class="Delimiter">{</span> +<span id="L288" class="LineNr">288 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L289" class="LineNr">289 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L290" class="LineNr">290 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L238'>draw-text-wrapping-down-then-right</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, x, y, color <span class="muComment"># 1024, 768</span> +<span id="L291" class="LineNr">291 </span> <span class="PreProc">return</span> cursor-x, cursor-y +<span id="L292" class="LineNr">292 </span><span class="Delimiter">}</span> +<span id="L293" class="LineNr">293 </span> +<span id="L294" class="LineNr">294 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L294'>draw-text-wrapping-down-then-right-from-cursor</a></span> screen: (addr screen), text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, color: int <span class="Delimiter">{</span> +<span id="L295" class="LineNr">295 </span> <span class="PreProc">var</span> cursor-x/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L296" class="LineNr">296 </span> <span class="PreProc">var</span> cursor-y/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> +<span id="L297" class="LineNr">297 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='103grapheme.subx.html#L77'>cursor-position</a> screen +<span id="L298" class="LineNr">298 </span> <span class="PreProc">var</span> end-y/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy cursor-y +<span id="L299" class="LineNr">299 </span> end-y <span class="SpecialChar"><-</span> add <span class="Constant">0x10</span> <span class="muComment"># font-height</span> +<span id="L300" class="LineNr">300 </span> compare end-y, ymax +<span id="L301" class="LineNr">301 </span> <span class="Delimiter">{</span> +<span id="L302" class="LineNr">302 </span> <span class="PreProc">break-if-<</span> +<span id="L303" class="LineNr">303 </span> cursor-x <span class="SpecialChar"><-</span> add <span class="Constant">8</span> <span class="muComment"># font-width</span> +<span id="L304" class="LineNr">304 </span> cursor-y <span class="SpecialChar"><-</span> copy ymin +<span id="L305" class="LineNr">305 </span> <span class="Delimiter">}</span> +<span id="L306" class="LineNr">306 </span> cursor-x, cursor-y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L238'>draw-text-wrapping-down-then-right</a> screen, text, xmin, ymin, xmax, ymax, cursor-x, cursor-y, color +<span id="L307" class="LineNr">307 </span><span class="Delimiter">}</span> +<span id="L308" class="LineNr">308 </span> +<span id="L309" class="LineNr">309 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='501draw-text.mu.html#L309'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a></span> screen: (addr screen), text: (addr array byte), color: int <span class="Delimiter">{</span> +<span id="L310" class="LineNr">310 </span> <a href='501draw-text.mu.html#L294'>draw-text-wrapping-down-then-right-from-cursor</a> screen, text, <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">0x400</span>, <span class="Constant">0x300</span>, color <span class="muComment"># 1024, 768</span> +<span id="L311" class="LineNr">311 </span><span class="Delimiter">}</span> </pre> </body> </html> diff --git a/html/baremetal/502test.mu.html b/html/baremetal/502test.mu.html new file mode 100644 index 00000000..f1bf0f28 --- /dev/null +++ b/html/baremetal/502test.mu.html @@ -0,0 +1,82 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - baremetal/502test.mu</title> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal-light"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; } +body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } +a { color:inherit; } +* { font-size:12pt; font-size: 1em; } +.PreProc { color: #c000c0; } +.LineNr { } +.Constant { color: #008787; } +.SpecialChar { color: #d70000; } +.Delimiter { color: #c000c0; } +.muFunction { color: #af5f00; text-decoration: underline; } +.muTest { color: #5f8700; } +.muComment { color: #005faf; } +--> +</style> + +<script type='text/javascript'> +<!-- + +/* function to open any folds containing a jumped-to line before jumping to it */ +function JumpToLine() +{ + var lineNum; + lineNum = window.location.hash; + lineNum = lineNum.substr(1); /* strip off '#' */ + + if (lineNum.indexOf('L') == -1) { + lineNum = 'L'+lineNum; + } + var lineElem = document.getElementById(lineNum); + /* Always jump to new location even if the line was hidden inside a fold, or + * we corrected the raw number to a line ID. + */ + if (lineElem) { + lineElem.scrollIntoView(true); + } + return true; +} +if ('onhashchange' in window) { + window.onhashchange = JumpToLine; +} + +--> +</script> +</head> +<body onload='JumpToLine();'> +<a href='https://github.com/akkartik/mu/blob/main/baremetal/502test.mu'>https://github.com/akkartik/mu/blob/main/baremetal/502test.mu</a> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="muComment"># print msg to screen if a != b, otherwise print "."</span> +<span id="L2" class="LineNr"> 2 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='502test.mu.html#L2'>check-ints-equal</a></span> _a: int, b: int, msg: (addr array byte) <span class="Delimiter">{</span> +<span id="L3" class="LineNr"> 3 </span> <span class="PreProc">var</span> a/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy _a +<span id="L4" class="LineNr"> 4 </span> compare a, b +<span id="L5" class="LineNr"> 5 </span> <span class="Delimiter">{</span> +<span id="L6" class="LineNr"> 6 </span> <span class="PreProc">break-if-=</span> +<span id="L7" class="LineNr"> 7 </span> <a href='501draw-text.mu.html#L183'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, msg, <span class="Constant">3</span> <span class="muComment"># 3=cyan</span> +<span id="L8" class="LineNr"> 8 </span> <a href='104test.subx.html#L5'>count-test-failure</a> +<span id="L9" class="LineNr"> 9 </span> <span class="PreProc">return</span> +<span id="L10" class="LineNr">10 </span> <span class="Delimiter">}</span> +<span id="L11" class="LineNr">11 </span> <span class="Delimiter">{</span> +<span id="L12" class="LineNr">12 </span> <span class="PreProc">break-if-!=</span> +<span id="L13" class="LineNr">13 </span> <a href='501draw-text.mu.html#L183'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"."</span>, <span class="Constant">3</span> <span class="muComment"># 3=cyan</span> +<span id="L14" class="LineNr">14 </span> <span class="Delimiter">}</span> +<span id="L15" class="LineNr">15 </span><span class="Delimiter">}</span> +<span id="L16" class="LineNr">16 </span> +<span id="L17" class="LineNr">17 </span><span class="PreProc">fn</span> <span class="muTest"><a href='502test.mu.html#L17'>test-check-ints-equal</a></span> <span class="Delimiter">{</span> +<span id="L18" class="LineNr">18 </span> <a href='502test.mu.html#L2'>check-ints-equal</a> <span class="Constant">0</span>, <span class="Constant">0</span>, <span class="Constant">"abc"</span> +<span id="L19" class="LineNr">19 </span><span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/baremetal/503manhattan-line.mu.html b/html/baremetal/503manhattan-line.mu.html index bb47dd36..916b6f67 100644 --- a/html/baremetal/503manhattan-line.mu.html +++ b/html/baremetal/503manhattan-line.mu.html @@ -67,7 +67,7 @@ if ('onhashchange' in window) { <span id="L10" class="LineNr">10 </span> <span class="Delimiter">{</span> <span id="L11" class="LineNr">11 </span> compare x, x2 <span id="L12" class="LineNr">12 </span> <span class="PreProc">break-if->=</span> -<span id="L13" class="LineNr">13 </span> <a href='101screen.subx.html#L3'>pixel</a> screen, x, y, color +<span id="L13" class="LineNr">13 </span> <a href='101screen.subx.html#L5'>pixel</a> screen, x, y, color <span id="L14" class="LineNr">14 </span> x <span class="SpecialChar"><-</span> increment <span id="L15" class="LineNr">15 </span> <span class="PreProc">loop</span> <span id="L16" class="LineNr">16 </span> <span class="Delimiter">}</span> @@ -78,7 +78,7 @@ if ('onhashchange' in window) { <span id="L21" class="LineNr">21 </span> <span class="Delimiter">{</span> <span id="L22" class="LineNr">22 </span> compare y, y2 <span id="L23" class="LineNr">23 </span> <span class="PreProc">break-if->=</span> -<span id="L24" class="LineNr">24 </span> <a href='101screen.subx.html#L3'>pixel</a> screen, x, y, color +<span id="L24" class="LineNr">24 </span> <a href='101screen.subx.html#L5'>pixel</a> screen, x, y, color <span id="L25" class="LineNr">25 </span> y <span class="SpecialChar"><-</span> increment <span id="L26" class="LineNr">26 </span> <span class="PreProc">loop</span> <span id="L27" class="LineNr">27 </span> <span class="Delimiter">}</span> diff --git a/html/baremetal/ex1.subx.html b/html/baremetal/ex1.subx.html index dca74155..124ce287 100644 --- a/html/baremetal/ex1.subx.html +++ b/html/baremetal/ex1.subx.html @@ -64,10 +64,12 @@ if ('onhashchange' in window) { <span id="L10" class="LineNr">10 </span><span class="subxComment"># Or:</span> <span id="L11" class="LineNr">11 </span><span class="subxComment"># bochs -f baremetal/boot.bochsrc # boot.bochsrc loads disk.img</span> <span id="L12" class="LineNr">12 </span> -<span id="L13" class="LineNr">13 </span><span class="subxFunction">main</span>: -<span id="L14" class="LineNr">14 </span> e9/jump <a href='ex1.subx.html#L13'>main</a>/disp32 -<span id="L15" class="LineNr">15 </span> -<span id="L16" class="LineNr">16 </span><span class="subxComment"># vim:ft=subx</span> +<span id="L13" class="LineNr">13 </span>== code +<span id="L14" class="LineNr">14 </span> +<span id="L15" class="LineNr">15 </span><span class="subxFunction">main</span>: +<span id="L16" class="LineNr">16 </span> e9/jump <a href='ex1.subx.html#L15'>main</a>/disp32 +<span id="L17" class="LineNr">17 </span> +<span id="L18" class="LineNr">18 </span><span class="subxComment"># vim:ft=subx</span> </pre> </body> </html> diff --git a/html/baremetal/ex2.mu.html b/html/baremetal/ex2.mu.html index a0f4508d..dc700ce5 100644 --- a/html/baremetal/ex2.mu.html +++ b/html/baremetal/ex2.mu.html @@ -79,7 +79,7 @@ if ('onhashchange' in window) { <span id="L21" class="LineNr">21 </span> <span class="PreProc">break-if->=</span> <span id="L22" class="LineNr">22 </span> <span class="PreProc">var</span> color/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy x <span id="L23" class="LineNr">23 </span> color <span class="SpecialChar"><-</span> and <span class="Constant">0xff</span> -<span id="L24" class="LineNr">24 </span> <a href='101screen.subx.html#L3'>pixel</a> <span class="Constant">0</span>, x, y, color +<span id="L24" class="LineNr">24 </span> <a href='101screen.subx.html#L5'>pixel</a> <span class="Constant">0</span>, x, y, color <span id="L25" class="LineNr">25 </span> x <span class="SpecialChar"><-</span> increment <span id="L26" class="LineNr">26 </span> <span class="PreProc">loop</span> <span id="L27" class="LineNr">27 </span> <span class="Delimiter">}</span> diff --git a/html/baremetal/ex2.subx.html b/html/baremetal/ex2.subx.html index 3d27392c..9064d31b 100644 --- a/html/baremetal/ex2.subx.html +++ b/html/baremetal/ex2.subx.html @@ -65,27 +65,29 @@ if ('onhashchange' in window) { <span id="L10" class="LineNr">10 </span><span class="subxComment"># Expected output:</span> <span id="L11" class="LineNr">11 </span><span class="subxComment"># html/baremetal.png</span> <span id="L12" class="LineNr">12 </span> -<span id="L13" class="LineNr">13 </span><span class="subxFunction">main</span>: -<span id="L14" class="LineNr">14 </span> <span class="subxComment"># ecx <- start of video memory</span> -<span id="L15" class="LineNr">15 </span> 8b/-> *0x7f28 1/r32/ecx -<span id="L16" class="LineNr">16 </span> -<span id="L17" class="LineNr">17 </span> <span class="subxComment"># eax <- final pixel of video memory</span> -<span id="L18" class="LineNr">18 </span> 8d/copy-address *(ecx + 0x0bffff) 0/r32/eax <span class="subxComment"># 0xbffff = 1024*768 - 1</span> -<span id="L19" class="LineNr">19 </span> -<span id="L20" class="LineNr">20 </span> <span class="subxComment"># for each pixel in video memory</span> -<span id="L21" class="LineNr">21 </span> { -<span id="L22" class="LineNr">22 </span> 39/compare %eax 1/r32/ecx -<span id="L23" class="LineNr">23 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 -<span id="L24" class="LineNr">24 </span> <span class="subxComment"># write its column number to it</span> -<span id="L25" class="LineNr">25 </span> 88/byte<- *eax 0/r32/AL -<span id="L26" class="LineNr">26 </span> 48/decrement-eax -<span id="L27" class="LineNr">27 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L28" class="LineNr">28 </span> } -<span id="L29" class="LineNr">29 </span> -<span id="L30" class="LineNr">30 </span> <span class="subxComment"># hang indefinitely</span> -<span id="L31" class="LineNr">31 </span> { -<span id="L32" class="LineNr">32 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L33" class="LineNr">33 </span> } +<span id="L13" class="LineNr">13 </span>== code +<span id="L14" class="LineNr">14 </span> +<span id="L15" class="LineNr">15 </span><span class="subxFunction">main</span>: +<span id="L16" class="LineNr">16 </span> <span class="subxComment"># ecx <- start of video memory</span> +<span id="L17" class="LineNr">17 </span> 8b/-> *0x7f28 1/r32/ecx +<span id="L18" class="LineNr">18 </span> +<span id="L19" class="LineNr">19 </span> <span class="subxComment"># eax <- final pixel of video memory</span> +<span id="L20" class="LineNr">20 </span> 8d/copy-address *(ecx + 0x0bffff) 0/r32/eax <span class="subxComment"># 0xbffff = 1024*768 - 1</span> +<span id="L21" class="LineNr">21 </span> +<span id="L22" class="LineNr">22 </span> <span class="subxComment"># for each pixel in video memory</span> +<span id="L23" class="LineNr">23 </span> { +<span id="L24" class="LineNr">24 </span> 39/compare %eax 1/r32/ecx +<span id="L25" class="LineNr">25 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 +<span id="L26" class="LineNr">26 </span> <span class="subxComment"># write its column number to it</span> +<span id="L27" class="LineNr">27 </span> 88/byte<- *eax 0/r32/AL +<span id="L28" class="LineNr">28 </span> 48/decrement-eax +<span id="L29" class="LineNr">29 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L30" class="LineNr">30 </span> } +<span id="L31" class="LineNr">31 </span> +<span id="L32" class="LineNr">32 </span> <span class="subxComment"># hang indefinitely</span> +<span id="L33" class="LineNr">33 </span> { +<span id="L34" class="LineNr">34 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L35" class="LineNr">35 </span> } </pre> </body> </html> diff --git a/html/baremetal/ex3.mu.html b/html/baremetal/ex3.mu.html index 7d79c8c5..288b015a 100644 --- a/html/baremetal/ex3.mu.html +++ b/html/baremetal/ex3.mu.html @@ -73,10 +73,10 @@ if ('onhashchange' in window) { <span id="L15" class="LineNr">15 </span> <span class="PreProc">var</span> x/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L16" class="LineNr">16 </span> <span class="PreProc">var</span> y/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span> <span id="L17" class="LineNr">17 </span> <span class="Delimiter">{</span> -<span id="L18" class="LineNr">18 </span> <span class="PreProc">var</span> key/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='102keyboard.subx.html#L3'>read-key</a> <span class="Constant">0</span> <span class="muComment"># real keyboard</span> +<span id="L18" class="LineNr">18 </span> <span class="PreProc">var</span> key/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='102keyboard.subx.html#L6'>read-key</a> <span class="Constant">0</span> <span class="muComment"># real keyboard</span> <span id="L19" class="LineNr">19 </span> compare key, <span class="Constant">0</span> <span id="L20" class="LineNr">20 </span> <span class="PreProc">loop-if-=</span> <span class="muComment"># busy wait</span> -<span id="L21" class="LineNr">21 </span> <a href='101screen.subx.html#L3'>pixel</a> <span class="Constant">0</span>, x, y, <span class="Constant">0x31</span> <span class="muComment"># green</span> +<span id="L21" class="LineNr">21 </span> <a href='101screen.subx.html#L5'>pixel</a> <span class="Constant">0</span>, x, y, <span class="Constant">0x31</span> <span class="muComment"># green</span> <span id="L22" class="LineNr">22 </span> x <span class="SpecialChar"><-</span> increment <span id="L23" class="LineNr">23 </span> compare x, <span class="Constant">0x400</span> <span id="L24" class="LineNr">24 </span> <span class="Delimiter">{</span> diff --git a/html/baremetal/ex4.mu.html b/html/baremetal/ex4.mu.html index 30d0063d..c74e8633 100644 --- a/html/baremetal/ex4.mu.html +++ b/html/baremetal/ex4.mu.html @@ -69,7 +69,7 @@ if ('onhashchange' in window) { <span id="L11" class="LineNr">11 </span> <span id="L12" class="LineNr">12 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex4.mu.html#L12'>main</a></span> <span class="Delimiter">{</span> <span id="L13" class="LineNr">13 </span> <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar"><-</span> copy <span class="Constant">0x41</span> <span class="muComment"># 'A'</span> -<span id="L14" class="LineNr">14 </span> <a href='103grapheme.subx.html#L1'>draw-grapheme</a> <span class="Constant">0</span>, g, <span class="Constant">0x10</span>, <span class="Constant">0x10</span>, <span class="Constant">0xa</span> +<span id="L14" class="LineNr">14 </span> <a href='103grapheme.subx.html#L5'>draw-grapheme</a> <span class="Constant">0</span>, g, <span class="Constant">0x10</span>, <span class="Constant">0x10</span>, <span class="Constant">0xa</span> <span id="L15" class="LineNr">15 </span><span class="Delimiter">}</span> </pre> </body> diff --git a/html/baremetal/ex6.mu.html b/html/baremetal/ex6.mu.html index 5121d218..01fd7ee4 100644 --- a/html/baremetal/ex6.mu.html +++ b/html/baremetal/ex6.mu.html @@ -78,15 +78,15 @@ if ('onhashchange' in window) { <span id="L20" class="LineNr">20 </span> x, y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L112'>draw-text-wrapping-right-then-down</a> <span class="Constant">0</span>, <span class="Constant">"Mu!"</span>, <span class="Constant">0x10</span>, <span class="Constant">0x20</span>, <span class="Constant">0x78</span>, <span class="Constant">0x50</span>, x, y, <span class="Constant">0xa</span> <span id="L21" class="LineNr">21 </span> <span id="L22" class="LineNr">22 </span> <span class="muComment"># drawing at the cursor in multiple directions</span> -<span id="L23" class="LineNr">23 </span> x, y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L315'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"abc"</span>, <span class="Constant">0xa</span> -<span id="L24" class="LineNr">24 </span> x, y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L184'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"def"</span>, <span class="Constant">0xa</span> +<span id="L23" class="LineNr">23 </span> <a href='501draw-text.mu.html#L309'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"abc"</span>, <span class="Constant">0xa</span> +<span id="L24" class="LineNr">24 </span> <a href='501draw-text.mu.html#L183'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"def"</span>, <span class="Constant">0xa</span> <span id="L25" class="LineNr">25 </span> <span id="L26" class="LineNr">26 </span> <span class="muComment"># test drawing near the edge</span> <span id="L27" class="LineNr">27 </span> x <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L65'>draw-text-rightward</a> <span class="Constant">0</span>, <span class="Constant">"R"</span>, <span class="Constant">0x3f8</span>, <span class="Constant">0x400</span>, <span class="Constant">0x100</span>, <span class="Constant">0xa</span> -<span id="L28" class="LineNr">28 </span> x, y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L184'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"wrapped from R"</span>, <span class="Constant">0xa</span> +<span id="L28" class="LineNr">28 </span> <a href='501draw-text.mu.html#L183'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"wrapped from R"</span>, <span class="Constant">0xa</span> <span id="L29" class="LineNr">29 </span> -<span id="L30" class="LineNr">30 </span> x <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L196'>draw-text-downward</a> <span class="Constant">0</span>, <span class="Constant">"D"</span>, <span class="Constant">0x100</span>, <span class="Constant">0x2f0</span>, <span class="Constant">0x300</span>, <span class="Constant">0xa</span> -<span id="L31" class="LineNr">31 </span> x, y <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L315'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"wrapped from D"</span>, <span class="Constant">0xa</span> +<span id="L30" class="LineNr">30 </span> x <span class="SpecialChar"><-</span> <a href='501draw-text.mu.html#L192'>draw-text-downward</a> <span class="Constant">0</span>, <span class="Constant">"D"</span>, <span class="Constant">0x100</span>, <span class="Constant">0x2f0</span>, <span class="Constant">0x300</span>, <span class="Constant">0xa</span> +<span id="L31" class="LineNr">31 </span> <a href='501draw-text.mu.html#L309'>draw-text-wrapping-down-then-right-from-cursor-over-full-screen</a> <span class="Constant">0</span>, <span class="Constant">"wrapped from D"</span>, <span class="Constant">0xa</span> <span id="L32" class="LineNr">32 </span><span class="Delimiter">}</span> </pre> </body> diff --git a/html/baremetal/ex7.mu.html b/html/baremetal/ex7.mu.html index f45d38dc..843225d1 100644 --- a/html/baremetal/ex7.mu.html +++ b/html/baremetal/ex7.mu.html @@ -69,7 +69,7 @@ if ('onhashchange' in window) { <span id="L11" class="LineNr">11 </span><span class="muComment"># k, l.</span> <span id="L12" class="LineNr">12 </span> <span id="L13" class="LineNr">13 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex7.mu.html#L13'>main</a></span> <span class="Delimiter">{</span> -<span id="L14" class="LineNr">14 </span> <span class="PreProc">var</span> key/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='102keyboard.subx.html#L3'>read-key</a> <span class="Constant">0</span> +<span id="L14" class="LineNr">14 </span> <span class="PreProc">var</span> key/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='102keyboard.subx.html#L6'>read-key</a> <span class="Constant">0</span> <span id="L15" class="LineNr">15 </span> <span class="Delimiter">{</span> <span id="L16" class="LineNr">16 </span> compare key, <span class="Constant">0x68</span> <span class="muComment"># 'h'</span> <span id="L17" class="LineNr">17 </span> <span class="PreProc">break-if-!=</span> diff --git a/html/baremetal/mu-init.subx.html b/html/baremetal/mu-init.subx.html index 59895590..b765f7e0 100644 --- a/html/baremetal/mu-init.subx.html +++ b/html/baremetal/mu-init.subx.html @@ -63,12 +63,22 @@ if ('onhashchange' in window) { <span id="L9" class="LineNr"> 9 </span><span class="subxComment"># initialize stack</span> <span id="L10" class="LineNr">10 </span>bd/copy-to-ebp 0/imm32 <span id="L11" class="LineNr">11 </span><span class="subxComment"># no heap yet</span> -<span id="L12" class="LineNr">12 </span>(main) -<span id="L13" class="LineNr">13 </span> -<span id="L14" class="LineNr">14 </span><span class="subxComment"># hang indefinitely</span> -<span id="L15" class="LineNr">15 </span>{ -<span id="L16" class="LineNr">16 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L17" class="LineNr">17 </span>} +<span id="L12" class="LineNr">12 </span><span class="subxComment">#</span> +<span id="L13" class="LineNr">13 </span><span class="subxComment"># always first run tests</span> +<span id="L14" class="LineNr">14 </span>(run-tests) +<span id="L15" class="LineNr">15 </span>(<a href='104test.subx.html#L17'>num-test-failures</a>) <span class="subxComment"># => eax</span> +<span id="L16" class="LineNr">16 </span><span class="subxComment"># call main if tests all passed</span> +<span id="L17" class="LineNr">17 </span>{ +<span id="L18" class="LineNr">18 </span> 3d/compare-eax-and 0/imm32 +<span id="L19" class="LineNr">19 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 +<span id="L20" class="LineNr">20 </span> (<a href='500clear-screen.mu.html#L1'>clear-screen</a>) +<span id="L21" class="LineNr">21 </span> (main) +<span id="L22" class="LineNr">22 </span>} +<span id="L23" class="LineNr">23 </span> +<span id="L24" class="LineNr">24 </span><span class="subxComment"># hang indefinitely</span> +<span id="L25" class="LineNr">25 </span>{ +<span id="L26" class="LineNr">26 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L27" class="LineNr">27 </span>} </pre> </body> </html> |