diff options
Diffstat (limited to 'html/103glyph.subx.html')
| -rw-r--r-- | html/103glyph.subx.html | 548 |
1 files changed, 281 insertions, 267 deletions
diff --git a/html/103glyph.subx.html b/html/103glyph.subx.html index ec51fccd..1b724030 100644 --- a/html/103glyph.subx.html +++ b/html/103glyph.subx.html @@ -1,14 +1,14 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<!DOCTYPE html> <html> <head> -<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<meta charset="UTF-8"> <title>Mu - 103glyph.subx</title> -<meta name="Generator" content="Vim/8.1"> -<meta name="plugin-version" content="vim8.1_v1"> +<meta name="Generator" content="Vim/8.2"> +<meta name="plugin-version" content="vim8.1_v2"> <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="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=,use_input_for_pc=fallback"> <meta name="colorscheme" content="minimal-light"> -<style type="text/css"> +<style> <!-- pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #ffffd7; } body { font-size:12pt; font-family: monospace; color: #000000; background-color: #ffffd7; } @@ -23,7 +23,7 @@ a { color:inherit; } --> </style> -<script type='text/javascript'> +<script> <!-- /* function to open any folds containing a jumped-to line before jumping to it */ @@ -167,11 +167,11 @@ if ('onhashchange' in window) { <span id="L110" class="LineNr">110 </span> 3d/compare-eax-and 8/imm32 <span id="L111" class="LineNr">111 </span> { <span id="L112" class="LineNr">112 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 -<span id="L113" class="LineNr">113 </span> (<a href='103glyph.subx.html#L173'>draw-narrow-code-point-on-screen-buffer</a> *(ebp+8) %esi *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) +<span id="L113" class="LineNr">113 </span> (<a href='103glyph.subx.html#L187'>draw-narrow-code-point-on-screen-buffer</a> *(ebp+8) %esi *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) <span id="L114" class="LineNr">114 </span> b8/copy-to-eax 1/imm32 <span id="L115" class="LineNr">115 </span> eb/jump $draw-code-point-on-screen-buffer:end/disp8 <span id="L116" class="LineNr">116 </span> } -<span id="L117" class="LineNr">117 </span> (<a href='103glyph.subx.html#L219'>draw-wide-code-point-on-screen-buffer</a> *(ebp+8) %esi *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) +<span id="L117" class="LineNr">117 </span> (<a href='103glyph.subx.html#L233'>draw-wide-code-point-on-screen-buffer</a> *(ebp+8) %esi *(ebp+0x10) *(ebp+0x14) *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) <span id="L118" class="LineNr">118 </span> b8/copy-to-eax 2/imm32 <span id="L119" class="LineNr">119 </span><span class="Constant">$draw-code-point-on-screen-buffer:end</span>: <span id="L120" class="LineNr">120 </span> <span class="subxS1Comment"># . restore registers</span> @@ -187,9 +187,9 @@ if ('onhashchange' in window) { <span id="L130" class="LineNr">130 </span> 89/<- %ebp 4/r32/esp <span id="L131" class="LineNr">131 </span> <span class="subxComment"># eax = c</span> <span id="L132" class="LineNr">132 </span> 8b/-> *(ebp+8) 0/r32/eax -<span id="L133" class="LineNr">133 </span> <span class="subxComment"># if (c >= 128) return # characters beyond ASCII currently not supported</span> -<span id="L134" class="LineNr">134 </span> 3d/compare-eax-and 0x80/imm32 -<span id="L135" class="LineNr">135 </span> 0f 8d/jump-if->= $wide-code-point?:end/disp32 +<span id="L133" class="LineNr">133 </span> <span class="subxComment"># if (c >= 4352) return false</span> +<span id="L134" class="LineNr">134 </span> 3d/compare-eax-and 0x1100/imm32 +<span id="L135" class="LineNr">135 </span> 0f 8d/jump-if->= $wide-code-point?:return-false/disp32 <span id="L136" class="LineNr">136 </span> <span class="subxComment"># var letter-bitmap/eax = font[c]</span> <span id="L137" class="LineNr">137 </span> 69/multiply %eax 0x22/imm32/glyph-size 0/r32/eax <span id="L138" class="LineNr">138 </span> 05/add-to-eax 0x0010000c/imm32/Font <span class="subxComment"># see boot.subx</span> @@ -204,261 +204,275 @@ if ('onhashchange' in window) { <span id="L147" class="LineNr">147 </span> 5d/pop-to-ebp <span id="L148" class="LineNr">148 </span> c3/return <span id="L149" class="LineNr">149 </span> -<span id="L150" class="LineNr">150 </span><span class="subxFunction">combining-code-point?</span>: <span class="subxComment"># c: code-point -> _/eax: boolean</span> -<span id="L151" class="LineNr">151 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L152" class="LineNr">152 </span> 55/push-ebp -<span id="L153" class="LineNr">153 </span> 89/<- %ebp 4/r32/esp -<span id="L154" class="LineNr">154 </span> <span class="subxComment"># eax = c</span> -<span id="L155" class="LineNr">155 </span> 8b/-> *(ebp+8) 0/r32/eax -<span id="L156" class="LineNr">156 </span> <span class="subxComment"># if (c >= 128) return # characters beyond ASCII currently not supported</span> -<span id="L157" class="LineNr">157 </span> 3d/compare-eax-and 0x80/imm32 -<span id="L158" class="LineNr">158 </span> 0f 8d/jump-if->= $combining-code-point?:end/disp32 -<span id="L159" class="LineNr">159 </span> <span class="subxComment"># var letter-bitmap/eax = font[c]</span> -<span id="L160" class="LineNr">160 </span> 69/multiply %eax 0x22/imm32/glyph-size 0/r32/eax -<span id="L161" class="LineNr">161 </span> 05/add-to-eax 0x0010000c/imm32/Font <span class="subxComment"># see boot.subx</span> -<span id="L162" class="LineNr">162 </span> <span class="subxComment"># dispatch based on letter-bitmap->is-combine?</span> -<span id="L163" class="LineNr">163 </span> 8a/byte-> *(eax+1) 0/r32/AL -<span id="L164" class="LineNr">164 </span> 25/and-eax-with 0xff/imm32 -<span id="L165" class="LineNr">165 </span><span class="Constant">$combining-code-point?:end</span>: -<span id="L166" class="LineNr">166 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L167" class="LineNr">167 </span> 89/<- %esp 5/r32/ebp -<span id="L168" class="LineNr">168 </span> 5d/pop-to-ebp -<span id="L169" class="LineNr">169 </span> c3/return -<span id="L170" class="LineNr">170 </span> -<span id="L171" class="LineNr">171 </span><span class="subxComment"># buffer: naked address to raw screen RAM without a length</span> -<span id="L172" class="LineNr">172 </span><span class="subxComment"># letter-bitmap: naked address to 8-pixel wide font glyph</span> -<span id="L173" class="LineNr">173 </span><span class="subxFunction">draw-narrow-code-point-on-screen-buffer</span>: <span class="subxComment"># buffer: (addr byte), letter-bitmap: (addr byte), x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> -<span id="L174" class="LineNr">174 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L175" class="LineNr">175 </span> 55/push-ebp -<span id="L176" class="LineNr">176 </span> 89/<- %ebp 4/r32/esp -<span id="L177" class="LineNr">177 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L178" class="LineNr">178 </span> 52/push-edx -<span id="L179" class="LineNr">179 </span> 53/push-ebx -<span id="L180" class="LineNr">180 </span> 56/push-esi -<span id="L181" class="LineNr">181 </span> 57/push-edi -<span id="L182" class="LineNr">182 </span> <span class="subxComment"># esi = letter-bitmap</span> -<span id="L183" class="LineNr">183 </span> 8b/-> *(ebp+0xc) 6/r32/esi -<span id="L184" class="LineNr">184 </span> <span class="subxComment"># var ycurr/edx: int = y*16</span> -<span id="L185" class="LineNr">185 </span> 8b/-> *(ebp+0x14) 2/r32/edx -<span id="L186" class="LineNr">186 </span> c1 4/subop/shift-left %edx 4/imm8 -<span id="L187" class="LineNr">187 </span> <span class="subxComment"># var ymax/edi: int = ycurr + 16</span> -<span id="L188" class="LineNr">188 </span> 8b/-> *(ebp+0x14) 7/r32/edi -<span id="L189" class="LineNr">189 </span> c1 4/subop/shift-left %edi 4/imm8 -<span id="L190" class="LineNr">190 </span> 81 0/subop/add %edi 0x10/imm32 -<span id="L191" class="LineNr">191 </span> { -<span id="L192" class="LineNr">192 </span> <span class="subxComment"># if (ycurr >= ymax) break</span> -<span id="L193" class="LineNr">193 </span> 39/compare %edx 7/r32/edi -<span id="L194" class="LineNr">194 </span> 0f 8d/jump-if->= <span class="Constant">break</span>/disp32 -<span id="L195" class="LineNr">195 </span> <span class="subxComment"># var row-bitmap/ebx: byte = *letter-bitmap</span> -<span id="L196" class="LineNr">196 </span> bb/copy-to-ebx 0/imm32 -<span id="L197" class="LineNr">197 </span> 8a/byte-> *esi 3/r32/BL -<span id="L198" class="LineNr">198 </span> (<a href='103glyph.subx.html#L276'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx *(ebp+0x10) %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) -<span id="L199" class="LineNr">199 </span> <span class="subxComment"># ++y</span> -<span id="L200" class="LineNr">200 </span> 42/increment-edx -<span id="L201" class="LineNr">201 </span> <span class="subxComment"># next bitmap row</span> -<span id="L202" class="LineNr">202 </span> 46/increment-esi -<span id="L203" class="LineNr">203 </span> <span class="subxComment">#</span> -<span id="L204" class="LineNr">204 </span> e9/jump <span class="Constant">loop</span>/disp32 -<span id="L205" class="LineNr">205 </span> } -<span id="L206" class="LineNr">206 </span><span class="Constant">$draw-narrow-code-point-on-screen-buffer:end</span>: -<span id="L207" class="LineNr">207 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L208" class="LineNr">208 </span> 5f/pop-to-edi -<span id="L209" class="LineNr">209 </span> 5e/pop-to-esi -<span id="L210" class="LineNr">210 </span> 5b/pop-to-ebx -<span id="L211" class="LineNr">211 </span> 5a/pop-to-edx -<span id="L212" class="LineNr">212 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L213" class="LineNr">213 </span> 89/<- %esp 5/r32/ebp -<span id="L214" class="LineNr">214 </span> 5d/pop-to-ebp -<span id="L215" class="LineNr">215 </span> c3/return -<span id="L216" class="LineNr">216 </span> -<span id="L217" class="LineNr">217 </span><span class="subxComment"># buffer: naked address to raw screen RAM without a length</span> -<span id="L218" class="LineNr">218 </span><span class="subxComment"># letter-bitmap: naked address to 16-pixel wide font glyph</span> -<span id="L219" class="LineNr">219 </span><span class="subxFunction">draw-wide-code-point-on-screen-buffer</span>: <span class="subxComment"># buffer: (addr byte), letter-bitmap: (addr byte), x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> -<span id="L220" class="LineNr">220 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L221" class="LineNr">221 </span> 55/push-ebp -<span id="L222" class="LineNr">222 </span> 89/<- %ebp 4/r32/esp -<span id="L223" class="LineNr">223 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L224" class="LineNr">224 </span> 50/push-eax -<span id="L225" class="LineNr">225 </span> 51/push-ecx -<span id="L226" class="LineNr">226 </span> 52/push-edx -<span id="L227" class="LineNr">227 </span> 53/push-ebx -<span id="L228" class="LineNr">228 </span> 56/push-esi -<span id="L229" class="LineNr">229 </span> 57/push-edi -<span id="L230" class="LineNr">230 </span> <span class="subxComment"># esi = letter-bitmap</span> -<span id="L231" class="LineNr">231 </span> 8b/-> *(ebp+0xc) 6/r32/esi -<span id="L232" class="LineNr">232 </span> <span class="subxComment">#</span> -<span id="L233" class="LineNr">233 </span> bb/copy-to-ebx 0/imm32 -<span id="L234" class="LineNr">234 </span> <span class="subxComment"># var ycurr/edx: int = y*16</span> -<span id="L235" class="LineNr">235 </span> 8b/-> *(ebp+0x14) 2/r32/edx -<span id="L236" class="LineNr">236 </span> c1 4/subop/shift-left %edx 4/imm8 -<span id="L237" class="LineNr">237 </span> <span class="subxComment"># var ymax/edi: int = ycurr + 16</span> -<span id="L238" class="LineNr">238 </span> 8b/-> *(ebp+0x14) 7/r32/edi -<span id="L239" class="LineNr">239 </span> c1 4/subop/shift-left %edi 4/imm8 -<span id="L240" class="LineNr">240 </span> 81 0/subop/add %edi 0x10/imm32 -<span id="L241" class="LineNr">241 </span> { -<span id="L242" class="LineNr">242 </span> <span class="subxComment"># if (ycurr >= ymax) break</span> -<span id="L243" class="LineNr">243 </span> 39/compare %edx 7/r32/edi -<span id="L244" class="LineNr">244 </span> 0f 8d/jump-if->= <span class="Constant">break</span>/disp32 -<span id="L245" class="LineNr">245 </span> <span class="subxComment"># var row-bitmap/ebx: byte = *letter-bitmap</span> -<span id="L246" class="LineNr">246 </span> 8a/byte-> *esi 3/r32/BL -<span id="L247" class="LineNr">247 </span> <span class="subxComment"># ecx = x</span> -<span id="L248" class="LineNr">248 </span> 8b/-> *(ebp+0x10) 1/r32/ecx -<span id="L249" class="LineNr">249 </span> <span class="subxComment"># first half-row</span> -<span id="L250" class="LineNr">250 </span> (<a href='103glyph.subx.html#L276'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) -<span id="L251" class="LineNr">251 </span> <span class="subxComment"># second half-row</span> -<span id="L252" class="LineNr">252 </span> 8a/byte-> *(esi+1) 3/r32/BL -<span id="L253" class="LineNr">253 </span> 41/increment-ecx -<span id="L254" class="LineNr">254 </span> (<a href='103glyph.subx.html#L276'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) -<span id="L255" class="LineNr">255 </span> <span class="subxComment"># ++y</span> -<span id="L256" class="LineNr">256 </span> 42/increment-edx -<span id="L257" class="LineNr">257 </span> <span class="subxComment"># next bitmap row</span> -<span id="L258" class="LineNr">258 </span> 81 0/subop/add %esi 2/imm32 -<span id="L259" class="LineNr">259 </span> <span class="subxComment">#</span> -<span id="L260" class="LineNr">260 </span> e9/jump <span class="Constant">loop</span>/disp32 -<span id="L261" class="LineNr">261 </span> } -<span id="L262" class="LineNr">262 </span><span class="Constant">$draw-wide-code-point-on-screen-buffer:end</span>: -<span id="L263" class="LineNr">263 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L264" class="LineNr">264 </span> 5f/pop-to-edi -<span id="L265" class="LineNr">265 </span> 5e/pop-to-esi -<span id="L266" class="LineNr">266 </span> 5b/pop-to-ebx -<span id="L267" class="LineNr">267 </span> 5a/pop-to-edx -<span id="L268" class="LineNr">268 </span> 59/pop-to-ecx -<span id="L269" class="LineNr">269 </span> 58/pop-to-eax -<span id="L270" class="LineNr">270 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L271" class="LineNr">271 </span> 89/<- %esp 5/r32/ebp -<span id="L272" class="LineNr">272 </span> 5d/pop-to-ebp -<span id="L273" class="LineNr">273 </span> c3/return -<span id="L274" class="LineNr">274 </span> -<span id="L275" class="LineNr">275 </span><span class="subxComment"># draw 8 pixels from a single glyph byte in a font bitmap</span> -<span id="L276" class="LineNr">276 </span><span class="subxFunction">draw-run-of-pixels-from-glyph</span>: <span class="subxComment"># buffer: (addr byte), glyph-byte: byte, x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> -<span id="L277" class="LineNr">277 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L278" class="LineNr">278 </span> 55/push-ebp -<span id="L279" class="LineNr">279 </span> 89/<- %ebp 4/r32/esp -<span id="L280" class="LineNr">280 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L281" class="LineNr">281 </span> 50/push-eax -<span id="L282" class="LineNr">282 </span> 51/push-ecx -<span id="L283" class="LineNr">283 </span> 56/push-esi -<span id="L284" class="LineNr">284 </span> <span class="subxComment"># esi = glyph-byte</span> -<span id="L285" class="LineNr">285 </span> 8b/-> *(ebp+0xc) 6/r32/esi -<span id="L286" class="LineNr">286 </span> <span class="subxComment"># var xcurr/eax: int = x*8 + 7</span> -<span id="L287" class="LineNr">287 </span> 8b/-> *(ebp+0x10) 0/r32/eax -<span id="L288" class="LineNr">288 </span> c1 4/subop/shift-left %eax 3/imm8 -<span id="L289" class="LineNr">289 </span> 05/add-to-eax 7/imm32 -<span id="L290" class="LineNr">290 </span> <span class="subxComment"># var xmin/ecx: int = x*8</span> -<span id="L291" class="LineNr">291 </span> 8b/-> *(ebp+0x10) 1/r32/ecx -<span id="L292" class="LineNr">292 </span> c1 4/subop/shift-left %ecx 3/imm8 -<span id="L293" class="LineNr">293 </span> { -<span id="L294" class="LineNr">294 </span> <span class="subxComment"># if (xcurr < xmin) break</span> -<span id="L295" class="LineNr">295 </span> 39/compare %eax 1/r32/ecx -<span id="L296" class="LineNr">296 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 -<span id="L297" class="LineNr">297 </span> <span class="subxComment"># shift LSB from row-bitmap into carry flag (CF)</span> -<span id="L298" class="LineNr">298 </span> c1 5/subop/shift-right-logical %esi 1/imm8 -<span id="L299" class="LineNr">299 </span> <span class="subxComment"># if LSB, draw a pixel in the given color</span> -<span id="L300" class="LineNr">300 </span> { -<span id="L301" class="LineNr">301 </span> 73/jump-if-not-CF <span class="Constant">break</span>/disp8 -<span id="L302" class="LineNr">302 </span> (<a href='101screen.subx.html#L21'>pixel-on-screen-buffer</a> *(ebp+8) %eax *(ebp+0x14) *(ebp+0x18) *(ebp+0x24) *(ebp+0x28)) -<span id="L303" class="LineNr">303 </span> eb/jump $draw-code-point-on-screen-buffer:continue/disp8 -<span id="L304" class="LineNr">304 </span> } -<span id="L305" class="LineNr">305 </span> <span class="subxComment"># otherwise use the background color (except when overlay?)</span> -<span id="L306" class="LineNr">306 </span> { -<span id="L307" class="LineNr">307 </span> 81 7/subop/compare *(ebp+0x20) 0/imm32/false -<span id="L308" class="LineNr">308 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 -<span id="L309" class="LineNr">309 </span> (<a href='101screen.subx.html#L21'>pixel-on-screen-buffer</a> *(ebp+8) %eax *(ebp+0x14) *(ebp+0x1c) *(ebp+0x24) *(ebp+0x28)) -<span id="L310" class="LineNr">310 </span> } -<span id="L311" class="LineNr">311 </span><span class="Constant">$draw-code-point-on-screen-buffer:continue</span>: -<span id="L312" class="LineNr">312 </span> <span class="subxComment"># --x</span> -<span id="L313" class="LineNr">313 </span> 48/decrement-eax -<span id="L314" class="LineNr">314 </span> <span class="subxComment">#</span> -<span id="L315" class="LineNr">315 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L316" class="LineNr">316 </span> } -<span id="L317" class="LineNr">317 </span><span class="Constant">$draw-run-of-pixels-from-glyph:end</span>: -<span id="L318" class="LineNr">318 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L319" class="LineNr">319 </span> 5e/pop-to-esi -<span id="L320" class="LineNr">320 </span> 59/pop-to-ecx -<span id="L321" class="LineNr">321 </span> 58/pop-to-eax -<span id="L322" class="LineNr">322 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L323" class="LineNr">323 </span> 89/<- %esp 5/r32/ebp -<span id="L324" class="LineNr">324 </span> 5d/pop-to-ebp -<span id="L325" class="LineNr">325 </span> c3/return -<span id="L326" class="LineNr">326 </span> -<span id="L327" class="LineNr">327 </span><span class="subxFunction">cursor-position-on-real-screen</span>: <span class="subxComment"># -> _/eax: int, _/ecx: int</span> -<span id="L328" class="LineNr">328 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L329" class="LineNr">329 </span> 55/push-ebp -<span id="L330" class="LineNr">330 </span> 89/<- %ebp 4/r32/esp -<span id="L331" class="LineNr">331 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> -<span id="L332" class="LineNr">332 </span> 8b/-> *<span class="SpecialChar"><a href='103glyph.subx.html#L401'>Real-screen-cursor-x</a></span> 0/r32/eax -<span id="L333" class="LineNr">333 </span> 8b/-> *<span class="SpecialChar"><a href='103glyph.subx.html#L403'>Real-screen-cursor-y</a></span> 1/r32/ecx -<span id="L334" class="LineNr">334 </span><span class="Constant">$cursor-position-on-real-screen:end</span>: -<span id="L335" class="LineNr">335 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L336" class="LineNr">336 </span> 89/<- %esp 5/r32/ebp -<span id="L337" class="LineNr">337 </span> 5d/pop-to-ebp -<span id="L338" class="LineNr">338 </span> c3/return -<span id="L339" class="LineNr">339 </span> -<span id="L340" class="LineNr">340 </span><span class="subxFunction">set-cursor-position-on-real-screen</span>: <span class="subxComment"># x: int, y: int</span> -<span id="L341" class="LineNr">341 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L342" class="LineNr">342 </span> 55/push-ebp -<span id="L343" class="LineNr">343 </span> 89/<- %ebp 4/r32/esp -<span id="L344" class="LineNr">344 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L345" class="LineNr">345 </span> 50/push-eax -<span id="L346" class="LineNr">346 </span> <span class="subxComment">#</span> -<span id="L347" class="LineNr">347 </span> 8b/-> *(ebp+8) 0/r32/eax -<span id="L348" class="LineNr">348 </span> 89/<- *<span class="SpecialChar"><a href='103glyph.subx.html#L401'>Real-screen-cursor-x</a></span> 0/r32/eax -<span id="L349" class="LineNr">349 </span> 8b/-> *(ebp+0xc) 0/r32/eax -<span id="L350" class="LineNr">350 </span> 89/<- *<span class="SpecialChar"><a href='103glyph.subx.html#L403'>Real-screen-cursor-y</a></span> 0/r32/eax -<span id="L351" class="LineNr">351 </span><span class="Constant">$set-cursor-position-on-real-screen:end</span>: -<span id="L352" class="LineNr">352 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L353" class="LineNr">353 </span> 58/pop-to-eax -<span id="L354" class="LineNr">354 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L355" class="LineNr">355 </span> 89/<- %esp 5/r32/ebp -<span id="L356" class="LineNr">356 </span> 5d/pop-to-ebp -<span id="L357" class="LineNr">357 </span> c3/return -<span id="L358" class="LineNr">358 </span> -<span id="L359" class="LineNr">359 </span><span class="subxComment"># Not a real `show-cursor` primitive:</span> -<span id="L360" class="LineNr">360 </span><span class="subxComment"># - does not clear previous location cursor was shown at.</span> -<span id="L361" class="LineNr">361 </span><span class="subxComment"># - does not preserve what was at the cursor. Caller is responsible for</span> -<span id="L362" class="LineNr">362 </span><span class="subxComment"># tracking what was on the screen at this position before and passing it</span> -<span id="L363" class="LineNr">363 </span><span class="subxComment"># in again.</span> -<span id="L364" class="LineNr">364 </span><span class="subxComment"># - does not stop showing the cursor at this location when the cursor moves</span> -<span id="L365" class="LineNr">365 </span><span class="subxFunction">draw-cursor-on-real-screen</span>: <span class="subxComment"># c: code-point</span> -<span id="L366" class="LineNr">366 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L367" class="LineNr">367 </span> 55/push-ebp -<span id="L368" class="LineNr">368 </span> 89/<- %ebp 4/r32/esp -<span id="L369" class="LineNr">369 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L370" class="LineNr">370 </span> 50/push-eax -<span id="L371" class="LineNr">371 </span> 51/push-ecx -<span id="L372" class="LineNr">372 </span> <span class="subxComment">#</span> -<span id="L373" class="LineNr">373 </span> (<a href='103glyph.subx.html#L327'>cursor-position-on-real-screen</a>) <span class="subxComment"># => eax, ecx</span> -<span id="L374" class="LineNr">374 </span> (<a href='103glyph.subx.html#L19'>draw-code-point-on-real-screen</a> *(ebp+8) %eax %ecx 0 7) <span class="subxComment"># => eax</span> -<span id="L375" class="LineNr">375 </span><span class="Constant">$draw-cursor-on-real-screen:end</span>: -<span id="L376" class="LineNr">376 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L377" class="LineNr">377 </span> 59/pop-to-ecx -<span id="L378" class="LineNr">378 </span> 58/pop-to-eax -<span id="L379" class="LineNr">379 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L380" class="LineNr">380 </span> 89/<- %esp 5/r32/ebp -<span id="L381" class="LineNr">381 </span> 5d/pop-to-ebp -<span id="L382" class="LineNr">382 </span> c3/return -<span id="L383" class="LineNr">383 </span> -<span id="L384" class="LineNr">384 </span>== data -<span id="L385" class="LineNr">385 </span> -<span id="L386" class="LineNr">386 </span><span class="subxComment"># The cursor is where certain Mu functions (usually of the form</span> -<span id="L387" class="LineNr">387 </span><span class="subxComment"># 'draw*cursor*') print to by default.</span> -<span id="L388" class="LineNr">388 </span><span class="subxComment">#</span> -<span id="L389" class="LineNr">389 </span><span class="subxComment"># We don't bother displaying the cursor when drawing. It only becomes visible</span> -<span id="L390" class="LineNr">390 </span><span class="subxComment"># on draw-cursor, which is quite rickety (see above)</span> -<span id="L391" class="LineNr">391 </span><span class="subxComment">#</span> -<span id="L392" class="LineNr">392 </span><span class="subxComment"># It's up to applications to manage cursor display:</span> -<span id="L393" class="LineNr">393 </span><span class="subxComment"># - clean up where it used to be</span> -<span id="L394" class="LineNr">394 </span><span class="subxComment"># - display the cursor before waiting for a key</span> -<span id="L395" class="LineNr">395 </span><span class="subxComment"># - ensure its location appropriately suggests the effect keystrokes will have</span> -<span id="L396" class="LineNr">396 </span><span class="subxComment"># - ensure its contents (and colors) appropriately reflect the state of the</span> -<span id="L397" class="LineNr">397 </span><span class="subxComment"># screen</span> -<span id="L398" class="LineNr">398 </span><span class="subxComment">#</span> -<span id="L399" class="LineNr">399 </span><span class="subxComment"># There's no blinking, etc. We aren't using any hardware-supported text mode</span> -<span id="L400" class="LineNr">400 </span><span class="subxComment"># here.</span> -<span id="L401" class="LineNr">401 </span><span class="SpecialChar">Real-screen-cursor-x</span>: -<span id="L402" class="LineNr">402 </span> 0/imm32 -<span id="L403" class="LineNr">403 </span><span class="SpecialChar">Real-screen-cursor-y</span>: -<span id="L404" class="LineNr">404 </span> 0/imm32 +<span id="L150" class="LineNr">150 </span><span class="Constant">$wide-code-point?:return-false</span>: +<span id="L151" class="LineNr">151 </span> b8/copy-to-eax 0/imm32/false +<span id="L152" class="LineNr">152 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L153" class="LineNr">153 </span> 89/<- %esp 5/r32/ebp +<span id="L154" class="LineNr">154 </span> 5d/pop-to-ebp +<span id="L155" class="LineNr">155 </span> c3/return +<span id="L156" class="LineNr">156 </span> +<span id="L157" class="LineNr">157 </span><span class="subxFunction">combining-code-point?</span>: <span class="subxComment"># c: code-point -> _/eax: boolean</span> +<span id="L158" class="LineNr">158 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L159" class="LineNr">159 </span> 55/push-ebp +<span id="L160" class="LineNr">160 </span> 89/<- %ebp 4/r32/esp +<span id="L161" class="LineNr">161 </span> <span class="subxComment"># eax = c</span> +<span id="L162" class="LineNr">162 </span> 8b/-> *(ebp+8) 0/r32/eax +<span id="L163" class="LineNr">163 </span> <span class="subxComment"># if (c >= 4352) return false</span> +<span id="L164" class="LineNr">164 </span> 3d/compare-eax-and 0x1100/imm32 +<span id="L165" class="LineNr">165 </span> 0f 8d/jump-if->= $combining-code-point?:return-false/disp32 +<span id="L166" class="LineNr">166 </span> <span class="subxComment"># var letter-bitmap/eax = font[c]</span> +<span id="L167" class="LineNr">167 </span> 69/multiply %eax 0x22/imm32/glyph-size 0/r32/eax +<span id="L168" class="LineNr">168 </span> 05/add-to-eax 0x0010000c/imm32/Font <span class="subxComment"># see boot.subx</span> +<span id="L169" class="LineNr">169 </span> <span class="subxComment"># dispatch based on letter-bitmap->is-combine?</span> +<span id="L170" class="LineNr">170 </span> 8a/byte-> *(eax+1) 0/r32/AL +<span id="L171" class="LineNr">171 </span> 25/and-eax-with 0xff/imm32 +<span id="L172" class="LineNr">172 </span><span class="Constant">$combining-code-point?:end</span>: +<span id="L173" class="LineNr">173 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L174" class="LineNr">174 </span> 89/<- %esp 5/r32/ebp +<span id="L175" class="LineNr">175 </span> 5d/pop-to-ebp +<span id="L176" class="LineNr">176 </span> c3/return +<span id="L177" class="LineNr">177 </span> +<span id="L178" class="LineNr">178 </span><span class="Constant">$combining-code-point?:return-false</span>: +<span id="L179" class="LineNr">179 </span> b8/copy-to-eax 0/imm32/false +<span id="L180" class="LineNr">180 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L181" class="LineNr">181 </span> 89/<- %esp 5/r32/ebp +<span id="L182" class="LineNr">182 </span> 5d/pop-to-ebp +<span id="L183" class="LineNr">183 </span> c3/return +<span id="L184" class="LineNr">184 </span> +<span id="L185" class="LineNr">185 </span><span class="subxComment"># buffer: naked address to raw screen RAM without a length</span> +<span id="L186" class="LineNr">186 </span><span class="subxComment"># letter-bitmap: naked address to 8-pixel wide font glyph</span> +<span id="L187" class="LineNr">187 </span><span class="subxFunction">draw-narrow-code-point-on-screen-buffer</span>: <span class="subxComment"># buffer: (addr byte), letter-bitmap: (addr byte), x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> +<span id="L188" class="LineNr">188 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L189" class="LineNr">189 </span> 55/push-ebp +<span id="L190" class="LineNr">190 </span> 89/<- %ebp 4/r32/esp +<span id="L191" class="LineNr">191 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L192" class="LineNr">192 </span> 52/push-edx +<span id="L193" class="LineNr">193 </span> 53/push-ebx +<span id="L194" class="LineNr">194 </span> 56/push-esi +<span id="L195" class="LineNr">195 </span> 57/push-edi +<span id="L196" class="LineNr">196 </span> <span class="subxComment"># esi = letter-bitmap</span> +<span id="L197" class="LineNr">197 </span> 8b/-> *(ebp+0xc) 6/r32/esi +<span id="L198" class="LineNr">198 </span> <span class="subxComment"># var ycurr/edx: int = y*16</span> +<span id="L199" class="LineNr">199 </span> 8b/-> *(ebp+0x14) 2/r32/edx +<span id="L200" class="LineNr">200 </span> c1 4/subop/shift-left %edx 4/imm8 +<span id="L201" class="LineNr">201 </span> <span class="subxComment"># var ymax/edi: int = ycurr + 16</span> +<span id="L202" class="LineNr">202 </span> 8b/-> *(ebp+0x14) 7/r32/edi +<span id="L203" class="LineNr">203 </span> c1 4/subop/shift-left %edi 4/imm8 +<span id="L204" class="LineNr">204 </span> 81 0/subop/add %edi 0x10/imm32 +<span id="L205" class="LineNr">205 </span> { +<span id="L206" class="LineNr">206 </span> <span class="subxComment"># if (ycurr >= ymax) break</span> +<span id="L207" class="LineNr">207 </span> 39/compare %edx 7/r32/edi +<span id="L208" class="LineNr">208 </span> 0f 8d/jump-if->= <span class="Constant">break</span>/disp32 +<span id="L209" class="LineNr">209 </span> <span class="subxComment"># var row-bitmap/ebx: byte = *letter-bitmap</span> +<span id="L210" class="LineNr">210 </span> bb/copy-to-ebx 0/imm32 +<span id="L211" class="LineNr">211 </span> 8a/byte-> *esi 3/r32/BL +<span id="L212" class="LineNr">212 </span> (<a href='103glyph.subx.html#L290'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx *(ebp+0x10) %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) +<span id="L213" class="LineNr">213 </span> <span class="subxComment"># ++y</span> +<span id="L214" class="LineNr">214 </span> 42/increment-edx +<span id="L215" class="LineNr">215 </span> <span class="subxComment"># next bitmap row</span> +<span id="L216" class="LineNr">216 </span> 46/increment-esi +<span id="L217" class="LineNr">217 </span> <span class="subxComment">#</span> +<span id="L218" class="LineNr">218 </span> e9/jump <span class="Constant">loop</span>/disp32 +<span id="L219" class="LineNr">219 </span> } +<span id="L220" class="LineNr">220 </span><span class="Constant">$draw-narrow-code-point-on-screen-buffer:end</span>: +<span id="L221" class="LineNr">221 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L222" class="LineNr">222 </span> 5f/pop-to-edi +<span id="L223" class="LineNr">223 </span> 5e/pop-to-esi +<span id="L224" class="LineNr">224 </span> 5b/pop-to-ebx +<span id="L225" class="LineNr">225 </span> 5a/pop-to-edx +<span id="L226" class="LineNr">226 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L227" class="LineNr">227 </span> 89/<- %esp 5/r32/ebp +<span id="L228" class="LineNr">228 </span> 5d/pop-to-ebp +<span id="L229" class="LineNr">229 </span> c3/return +<span id="L230" class="LineNr">230 </span> +<span id="L231" class="LineNr">231 </span><span class="subxComment"># buffer: naked address to raw screen RAM without a length</span> +<span id="L232" class="LineNr">232 </span><span class="subxComment"># letter-bitmap: naked address to 16-pixel wide font glyph</span> +<span id="L233" class="LineNr">233 </span><span class="subxFunction">draw-wide-code-point-on-screen-buffer</span>: <span class="subxComment"># buffer: (addr byte), letter-bitmap: (addr byte), x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> +<span id="L234" class="LineNr">234 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L235" class="LineNr">235 </span> 55/push-ebp +<span id="L236" class="LineNr">236 </span> 89/<- %ebp 4/r32/esp +<span id="L237" class="LineNr">237 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L238" class="LineNr">238 </span> 50/push-eax +<span id="L239" class="LineNr">239 </span> 51/push-ecx +<span id="L240" class="LineNr">240 </span> 52/push-edx +<span id="L241" class="LineNr">241 </span> 53/push-ebx +<span id="L242" class="LineNr">242 </span> 56/push-esi +<span id="L243" class="LineNr">243 </span> 57/push-edi +<span id="L244" class="LineNr">244 </span> <span class="subxComment"># esi = letter-bitmap</span> +<span id="L245" class="LineNr">245 </span> 8b/-> *(ebp+0xc) 6/r32/esi +<span id="L246" class="LineNr">246 </span> <span class="subxComment">#</span> +<span id="L247" class="LineNr">247 </span> bb/copy-to-ebx 0/imm32 +<span id="L248" class="LineNr">248 </span> <span class="subxComment"># var ycurr/edx: int = y*16</span> +<span id="L249" class="LineNr">249 </span> 8b/-> *(ebp+0x14) 2/r32/edx +<span id="L250" class="LineNr">250 </span> c1 4/subop/shift-left %edx 4/imm8 +<span id="L251" class="LineNr">251 </span> <span class="subxComment"># var ymax/edi: int = ycurr + 16</span> +<span id="L252" class="LineNr">252 </span> 8b/-> *(ebp+0x14) 7/r32/edi +<span id="L253" class="LineNr">253 </span> c1 4/subop/shift-left %edi 4/imm8 +<span id="L254" class="LineNr">254 </span> 81 0/subop/add %edi 0x10/imm32 +<span id="L255" class="LineNr">255 </span> { +<span id="L256" class="LineNr">256 </span> <span class="subxComment"># if (ycurr >= ymax) break</span> +<span id="L257" class="LineNr">257 </span> 39/compare %edx 7/r32/edi +<span id="L258" class="LineNr">258 </span> 0f 8d/jump-if->= <span class="Constant">break</span>/disp32 +<span id="L259" class="LineNr">259 </span> <span class="subxComment"># var row-bitmap/ebx: byte = *letter-bitmap</span> +<span id="L260" class="LineNr">260 </span> 8a/byte-> *esi 3/r32/BL +<span id="L261" class="LineNr">261 </span> <span class="subxComment"># ecx = x</span> +<span id="L262" class="LineNr">262 </span> 8b/-> *(ebp+0x10) 1/r32/ecx +<span id="L263" class="LineNr">263 </span> <span class="subxComment"># first half-row</span> +<span id="L264" class="LineNr">264 </span> (<a href='103glyph.subx.html#L290'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) +<span id="L265" class="LineNr">265 </span> <span class="subxComment"># second half-row</span> +<span id="L266" class="LineNr">266 </span> 8a/byte-> *(esi+1) 3/r32/BL +<span id="L267" class="LineNr">267 </span> 41/increment-ecx +<span id="L268" class="LineNr">268 </span> (<a href='103glyph.subx.html#L290'>draw-run-of-pixels-from-glyph</a> *(ebp+8) %ebx %ecx %edx *(ebp+0x18) *(ebp+0x1c) *(ebp+0x20) *(ebp+0x24) *(ebp+0x28)) +<span id="L269" class="LineNr">269 </span> <span class="subxComment"># ++y</span> +<span id="L270" class="LineNr">270 </span> 42/increment-edx +<span id="L271" class="LineNr">271 </span> <span class="subxComment"># next bitmap row</span> +<span id="L272" class="LineNr">272 </span> 81 0/subop/add %esi 2/imm32 +<span id="L273" class="LineNr">273 </span> <span class="subxComment">#</span> +<span id="L274" class="LineNr">274 </span> e9/jump <span class="Constant">loop</span>/disp32 +<span id="L275" class="LineNr">275 </span> } +<span id="L276" class="LineNr">276 </span><span class="Constant">$draw-wide-code-point-on-screen-buffer:end</span>: +<span id="L277" class="LineNr">277 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L278" class="LineNr">278 </span> 5f/pop-to-edi +<span id="L279" class="LineNr">279 </span> 5e/pop-to-esi +<span id="L280" class="LineNr">280 </span> 5b/pop-to-ebx +<span id="L281" class="LineNr">281 </span> 5a/pop-to-edx +<span id="L282" class="LineNr">282 </span> 59/pop-to-ecx +<span id="L283" class="LineNr">283 </span> 58/pop-to-eax +<span id="L284" class="LineNr">284 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L285" class="LineNr">285 </span> 89/<- %esp 5/r32/ebp +<span id="L286" class="LineNr">286 </span> 5d/pop-to-ebp +<span id="L287" class="LineNr">287 </span> c3/return +<span id="L288" class="LineNr">288 </span> +<span id="L289" class="LineNr">289 </span><span class="subxComment"># draw 8 pixels from a single glyph byte in a font bitmap</span> +<span id="L290" class="LineNr">290 </span><span class="subxFunction">draw-run-of-pixels-from-glyph</span>: <span class="subxComment"># buffer: (addr byte), glyph-byte: byte, x: int, y: int, color: int, background-color: int, overlay?: boolean, screen-width: int, screen-height: int</span> +<span id="L291" class="LineNr">291 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L292" class="LineNr">292 </span> 55/push-ebp +<span id="L293" class="LineNr">293 </span> 89/<- %ebp 4/r32/esp +<span id="L294" class="LineNr">294 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L295" class="LineNr">295 </span> 50/push-eax +<span id="L296" class="LineNr">296 </span> 51/push-ecx +<span id="L297" class="LineNr">297 </span> 56/push-esi +<span id="L298" class="LineNr">298 </span> <span class="subxComment"># esi = glyph-byte</span> +<span id="L299" class="LineNr">299 </span> 8b/-> *(ebp+0xc) 6/r32/esi +<span id="L300" class="LineNr">300 </span> <span class="subxComment"># var xcurr/eax: int = x*8 + 7</span> +<span id="L301" class="LineNr">301 </span> 8b/-> *(ebp+0x10) 0/r32/eax +<span id="L302" class="LineNr">302 </span> c1 4/subop/shift-left %eax 3/imm8 +<span id="L303" class="LineNr">303 </span> 05/add-to-eax 7/imm32 +<span id="L304" class="LineNr">304 </span> <span class="subxComment"># var xmin/ecx: int = x*8</span> +<span id="L305" class="LineNr">305 </span> 8b/-> *(ebp+0x10) 1/r32/ecx +<span id="L306" class="LineNr">306 </span> c1 4/subop/shift-left %ecx 3/imm8 +<span id="L307" class="LineNr">307 </span> { +<span id="L308" class="LineNr">308 </span> <span class="subxComment"># if (xcurr < xmin) break</span> +<span id="L309" class="LineNr">309 </span> 39/compare %eax 1/r32/ecx +<span id="L310" class="LineNr">310 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 +<span id="L311" class="LineNr">311 </span> <span class="subxComment"># shift LSB from row-bitmap into carry flag (CF)</span> +<span id="L312" class="LineNr">312 </span> c1 5/subop/shift-right-logical %esi 1/imm8 +<span id="L313" class="LineNr">313 </span> <span class="subxComment"># if LSB, draw a pixel in the given color</span> +<span id="L314" class="LineNr">314 </span> { +<span id="L315" class="LineNr">315 </span> 73/jump-if-not-CF <span class="Constant">break</span>/disp8 +<span id="L316" class="LineNr">316 </span> (<a href='101screen.subx.html#L21'>pixel-on-screen-buffer</a> *(ebp+8) %eax *(ebp+0x14) *(ebp+0x18) *(ebp+0x24) *(ebp+0x28)) +<span id="L317" class="LineNr">317 </span> eb/jump $draw-code-point-on-screen-buffer:continue/disp8 +<span id="L318" class="LineNr">318 </span> } +<span id="L319" class="LineNr">319 </span> <span class="subxComment"># otherwise use the background color (except when overlay?)</span> +<span id="L320" class="LineNr">320 </span> { +<span id="L321" class="LineNr">321 </span> 81 7/subop/compare *(ebp+0x20) 0/imm32/false +<span id="L322" class="LineNr">322 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8 +<span id="L323" class="LineNr">323 </span> (<a href='101screen.subx.html#L21'>pixel-on-screen-buffer</a> *(ebp+8) %eax *(ebp+0x14) *(ebp+0x1c) *(ebp+0x24) *(ebp+0x28)) +<span id="L324" class="LineNr">324 </span> } +<span id="L325" class="LineNr">325 </span><span class="Constant">$draw-code-point-on-screen-buffer:continue</span>: +<span id="L326" class="LineNr">326 </span> <span class="subxComment"># --x</span> +<span id="L327" class="LineNr">327 </span> 48/decrement-eax +<span id="L328" class="LineNr">328 </span> <span class="subxComment">#</span> +<span id="L329" class="LineNr">329 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L330" class="LineNr">330 </span> } +<span id="L331" class="LineNr">331 </span><span class="Constant">$draw-run-of-pixels-from-glyph:end</span>: +<span id="L332" class="LineNr">332 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L333" class="LineNr">333 </span> 5e/pop-to-esi +<span id="L334" class="LineNr">334 </span> 59/pop-to-ecx +<span id="L335" class="LineNr">335 </span> 58/pop-to-eax +<span id="L336" class="LineNr">336 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L337" class="LineNr">337 </span> 89/<- %esp 5/r32/ebp +<span id="L338" class="LineNr">338 </span> 5d/pop-to-ebp +<span id="L339" class="LineNr">339 </span> c3/return +<span id="L340" class="LineNr">340 </span> +<span id="L341" class="LineNr">341 </span><span class="subxFunction">cursor-position-on-real-screen</span>: <span class="subxComment"># -> _/eax: int, _/ecx: int</span> +<span id="L342" class="LineNr">342 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L343" class="LineNr">343 </span> 55/push-ebp +<span id="L344" class="LineNr">344 </span> 89/<- %ebp 4/r32/esp +<span id="L345" class="LineNr">345 </span> <span class="subxComment"># TODO: support fake screen; we currently assume 'screen' is always 0 (real)</span> +<span id="L346" class="LineNr">346 </span> 8b/-> *<span class="SpecialChar"><a href='103glyph.subx.html#L415'>Real-screen-cursor-x</a></span> 0/r32/eax +<span id="L347" class="LineNr">347 </span> 8b/-> *<span class="SpecialChar"><a href='103glyph.subx.html#L417'>Real-screen-cursor-y</a></span> 1/r32/ecx +<span id="L348" class="LineNr">348 </span><span class="Constant">$cursor-position-on-real-screen:end</span>: +<span id="L349" class="LineNr">349 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L350" class="LineNr">350 </span> 89/<- %esp 5/r32/ebp +<span id="L351" class="LineNr">351 </span> 5d/pop-to-ebp +<span id="L352" class="LineNr">352 </span> c3/return +<span id="L353" class="LineNr">353 </span> +<span id="L354" class="LineNr">354 </span><span class="subxFunction">set-cursor-position-on-real-screen</span>: <span class="subxComment"># x: int, y: int</span> +<span id="L355" class="LineNr">355 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L356" class="LineNr">356 </span> 55/push-ebp +<span id="L357" class="LineNr">357 </span> 89/<- %ebp 4/r32/esp +<span id="L358" class="LineNr">358 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L359" class="LineNr">359 </span> 50/push-eax +<span id="L360" class="LineNr">360 </span> <span class="subxComment">#</span> +<span id="L361" class="LineNr">361 </span> 8b/-> *(ebp+8) 0/r32/eax +<span id="L362" class="LineNr">362 </span> 89/<- *<span class="SpecialChar"><a href='103glyph.subx.html#L415'>Real-screen-cursor-x</a></span> 0/r32/eax +<span id="L363" class="LineNr">363 </span> 8b/-> *(ebp+0xc) 0/r32/eax +<span id="L364" class="LineNr">364 </span> 89/<- *<span class="SpecialChar"><a href='103glyph.subx.html#L417'>Real-screen-cursor-y</a></span> 0/r32/eax +<span id="L365" class="LineNr">365 </span><span class="Constant">$set-cursor-position-on-real-screen:end</span>: +<span id="L366" class="LineNr">366 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L367" class="LineNr">367 </span> 58/pop-to-eax +<span id="L368" class="LineNr">368 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L369" class="LineNr">369 </span> 89/<- %esp 5/r32/ebp +<span id="L370" class="LineNr">370 </span> 5d/pop-to-ebp +<span id="L371" class="LineNr">371 </span> c3/return +<span id="L372" class="LineNr">372 </span> +<span id="L373" class="LineNr">373 </span><span class="subxComment"># Not a real `show-cursor` primitive:</span> +<span id="L374" class="LineNr">374 </span><span class="subxComment"># - does not clear previous location cursor was shown at.</span> +<span id="L375" class="LineNr">375 </span><span class="subxComment"># - does not preserve what was at the cursor. Caller is responsible for</span> +<span id="L376" class="LineNr">376 </span><span class="subxComment"># tracking what was on the screen at this position before and passing it</span> +<span id="L377" class="LineNr">377 </span><span class="subxComment"># in again.</span> +<span id="L378" class="LineNr">378 </span><span class="subxComment"># - does not stop showing the cursor at this location when the cursor moves</span> +<span id="L379" class="LineNr">379 </span><span class="subxFunction">draw-cursor-on-real-screen</span>: <span class="subxComment"># c: code-point</span> +<span id="L380" class="LineNr">380 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L381" class="LineNr">381 </span> 55/push-ebp +<span id="L382" class="LineNr">382 </span> 89/<- %ebp 4/r32/esp +<span id="L383" class="LineNr">383 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L384" class="LineNr">384 </span> 50/push-eax +<span id="L385" class="LineNr">385 </span> 51/push-ecx +<span id="L386" class="LineNr">386 </span> <span class="subxComment">#</span> +<span id="L387" class="LineNr">387 </span> (<a href='103glyph.subx.html#L341'>cursor-position-on-real-screen</a>) <span class="subxComment"># => eax, ecx</span> +<span id="L388" class="LineNr">388 </span> (<a href='103glyph.subx.html#L19'>draw-code-point-on-real-screen</a> *(ebp+8) %eax %ecx 0 7) <span class="subxComment"># => eax</span> +<span id="L389" class="LineNr">389 </span><span class="Constant">$draw-cursor-on-real-screen:end</span>: +<span id="L390" class="LineNr">390 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L391" class="LineNr">391 </span> 59/pop-to-ecx +<span id="L392" class="LineNr">392 </span> 58/pop-to-eax +<span id="L393" class="LineNr">393 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L394" class="LineNr">394 </span> 89/<- %esp 5/r32/ebp +<span id="L395" class="LineNr">395 </span> 5d/pop-to-ebp +<span id="L396" class="LineNr">396 </span> c3/return +<span id="L397" class="LineNr">397 </span> +<span id="L398" class="LineNr">398 </span>== data +<span id="L399" class="LineNr">399 </span> +<span id="L400" class="LineNr">400 </span><span class="subxComment"># The cursor is where certain Mu functions (usually of the form</span> +<span id="L401" class="LineNr">401 </span><span class="subxComment"># 'draw*cursor*') print to by default.</span> +<span id="L402" class="LineNr">402 </span><span class="subxComment">#</span> +<span id="L403" class="LineNr">403 </span><span class="subxComment"># We don't bother displaying the cursor when drawing. It only becomes visible</span> +<span id="L404" class="LineNr">404 </span><span class="subxComment"># on draw-cursor, which is quite rickety (see above)</span> +<span id="L405" class="LineNr">405 </span><span class="subxComment">#</span> +<span id="L406" class="LineNr">406 </span><span class="subxComment"># It's up to applications to manage cursor display:</span> +<span id="L407" class="LineNr">407 </span><span class="subxComment"># - clean up where it used to be</span> +<span id="L408" class="LineNr">408 </span><span class="subxComment"># - display the cursor before waiting for a key</span> +<span id="L409" class="LineNr">409 </span><span class="subxComment"># - ensure its location appropriately suggests the effect keystrokes will have</span> +<span id="L410" class="LineNr">410 </span><span class="subxComment"># - ensure its contents (and colors) appropriately reflect the state of the</span> +<span id="L411" class="LineNr">411 </span><span class="subxComment"># screen</span> +<span id="L412" class="LineNr">412 </span><span class="subxComment">#</span> +<span id="L413" class="LineNr">413 </span><span class="subxComment"># There's no blinking, etc. We aren't using any hardware-supported text mode</span> +<span id="L414" class="LineNr">414 </span><span class="subxComment"># here.</span> +<span id="L415" class="LineNr">415 </span><span class="SpecialChar">Real-screen-cursor-x</span>: +<span id="L416" class="LineNr">416 </span> 0/imm32 +<span id="L417" class="LineNr">417 </span><span class="SpecialChar">Real-screen-cursor-y</span>: +<span id="L418" class="LineNr">418 </span> 0/imm32 </pre> </body> </html> |