diff options
Diffstat (limited to 'html')
| -rw-r--r-- | html/baremetal/108write.subx.html | 189 | ||||
| -rw-r--r-- | html/baremetal/112read-byte.subx.html | 72 | ||||
| -rw-r--r-- | html/baremetal/309stream.subx.html | 4 | ||||
| -rw-r--r-- | html/baremetal/400.mu.html | 2 | ||||
| -rw-r--r-- | html/baremetal/403unicode.mu.html | 4 | ||||
| -rw-r--r-- | html/baremetal/boot.hex.html | 4 |
6 files changed, 181 insertions, 94 deletions
diff --git a/html/baremetal/108write.subx.html b/html/baremetal/108write.subx.html index 68c65e6d..085efeff 100644 --- a/html/baremetal/108write.subx.html +++ b/html/baremetal/108write.subx.html @@ -21,6 +21,7 @@ a { color:inherit; } .subxFunction { color: #af5f00; text-decoration: underline; } .Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; } .Constant { color: #008787; } +.subxMinorFunction { color: #875f5f; } --> </style> @@ -56,59 +57,141 @@ 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='107trace.subx.html#L6'>_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="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<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> </pre> </body> </html> diff --git a/html/baremetal/112read-byte.subx.html b/html/baremetal/112read-byte.subx.html index 7673eab8..9fb89fd0 100644 --- a/html/baremetal/112read-byte.subx.html +++ b/html/baremetal/112read-byte.subx.html @@ -15,9 +15,9 @@ body { font-size:12pt; font-family: monospace; color: #000000; background-color: a { color:inherit; } * { font-size:12pt; font-size: 1em; } .subxComment { color: #005faf; } +.subxS1Comment { color: #0000af; } .subxS2Comment { color: #8a8a8a; } .LineNr { } -.subxS1Comment { color: #0000af; } .subxFunction { color: #af5f00; text-decoration: underline; } .Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; } .Constant { color: #008787; } @@ -56,39 +56,43 @@ 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"># TODO: read-byte-buffered</span> -<span id="L2" class="LineNr"> 2 </span> -<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># Return next byte value in eax, with top 3 bytes cleared.</span> -<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># Abort on reaching end of stream.</span> -<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">read-byte</span>: <span class="subxComment"># s: (addr stream byte) -> result/eax: 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="subxS1Comment"># . save registers</span> -<span id="L10" class="LineNr">10 </span> 51/push-ecx -<span id="L11" class="LineNr">11 </span> 56/push-esi -<span id="L12" class="LineNr">12 </span> <span class="subxComment"># esi = s</span> -<span id="L13" class="LineNr">13 </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="L14" class="LineNr">14 </span> <span class="subxComment"># ecx = s->read</span> -<span id="L15" class="LineNr">15 </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="L16" class="LineNr">16 </span> <span class="subxComment"># if (f->read >= f->write) abort</span> -<span id="L17" class="LineNr">17 </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="L18" class="LineNr">18 </span> 0f 8d/jump-if->= $read-byte:end/disp32 <span class="subxComment"># TODO: abort</span> -<span id="L19" class="LineNr">19 </span> <span class="subxComment"># result = f->data[f->read]</span> -<span id="L20" class="LineNr">20 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> -<span id="L21" class="LineNr">21 </span> 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(esi+ecx+12) to AL</span> -<span id="L22" class="LineNr">22 </span> <span class="subxComment"># ++f->read</span> -<span id="L23" class="LineNr">23 </span> ff 0/subop/increment 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># increment *(esi+4)</span> -<span id="L24" class="LineNr">24 </span><span class="Constant">$read-byte:end</span>: -<span id="L25" class="LineNr">25 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L26" class="LineNr">26 </span> 5e/pop-to-esi -<span id="L27" class="LineNr">27 </span> 59/pop-to-ecx -<span id="L28" class="LineNr">28 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L29" class="LineNr">29 </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="L30" class="LineNr">30 </span> 5d/pop-to-ebp -<span id="L31" class="LineNr">31 </span> c3/return -<span id="L32" class="LineNr">32 </span> -<span id="L33" class="LineNr">33 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<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> </pre> </body> </html> diff --git a/html/baremetal/309stream.subx.html b/html/baremetal/309stream.subx.html index db4e04e1..bbfd368b 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='107trace.subx.html#L38'>_append-4</a> %edx %ebx %eax %ecx) <span class="subxComment"># => eax</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="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='107trace.subx.html#L38'>_append-4</a> %eax %ecx %edx %ebx) <span class="subxComment"># => eax</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="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/400.mu.html b/html/baremetal/400.mu.html index 713534af..715c8d09 100644 --- a/html/baremetal/400.mu.html +++ b/html/baremetal/400.mu.html @@ -58,7 +58,7 @@ if ('onhashchange' in window) { <span id="L4" class="LineNr">4 </span> <span id="L5" class="LineNr">5 </span><span class="PreProc">sig</span> <a href='108write.subx.html#L5'>write</a> f: (addr stream byte), s: (addr array byte) <span id="L6" class="LineNr">6 </span><span class="PreProc">sig</span> <a href='115write-byte.subx.html#L6'>append-byte</a> f: (addr stream byte), n: int -<span id="L7" class="LineNr">7 </span><span class="PreProc">sig</span> <a href='112read-byte.subx.html#L5'>read-byte</a> s: (addr stream byte)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: byte +<span id="L7" class="LineNr">7 </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="L8" class="LineNr">8 </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> diff --git a/html/baremetal/403unicode.mu.html b/html/baremetal/403unicode.mu.html index 35622877..8151f6d4 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#L5'>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#L9'>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#L5'>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#L9'>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 diff --git a/html/baremetal/boot.hex.html b/html/baremetal/boot.hex.html index 4b696da1..5a3f3f43 100644 --- a/html/baremetal/boot.hex.html +++ b/html/baremetal/boot.hex.html @@ -486,10 +486,10 @@ if ('onhashchange' in window) { <span id="L431" class="LineNr">431 </span><span class="subxComment">## the rest of this file has data</span> <span id="L432" class="LineNr">432 </span> <span id="L433" class="LineNr">433 </span><span class="subxComment"># offset 400 (address 0x8000):</span> -<span id="L434" class="Folded">434 </span><span class="Folded">+--158 lines: # translating keys to ASCII -----------------------------------------------------------------------------------------------------------------------------------------------</span> +<span id="L434" class="Folded">434 </span><span class="Folded">+--158 lines: # translating keys to ASCII --------------------------------------------------------------------------------------------------------------------------------------------------------------------------</span> <span id="L592" class="LineNr">592 </span> <span id="L593" class="LineNr">593 </span><span class="subxComment"># offset c00 (address 0x8800)</span> -<span id="L594" class="Folded">594 </span><span class="Folded">+--236 lines: # Bitmaps for some ASCII characters (soon Unicode) ------------------------------------------------------------------------------------------------------------------------</span> +<span id="L594" class="Folded">594 </span><span class="Folded">+--236 lines: # Bitmaps for some ASCII characters (soon Unicode) ---------------------------------------------------------------------------------------------------------------------------------------------------</span> <span id="L830" class="LineNr">830 </span> <span id="L831" class="LineNr">831 </span><span class="subxComment"># offset 1400 (address 0x9000)</span> <span id="L832" class="LineNr">832 </span> |