diff options
| author | Kartik K. Agaram <vc@akkartik.com> | 2017-10-18 02:27:56 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2017-10-18 02:27:56 -0700 |
| commit | 8a0268317fbce2baa2e5119c796750ea6c80a813 (patch) | |
| tree | 786bc1d7f5c6db61288d6b3e4ed6a145c219d32f /html/subx/011direct_addressing.cc.html | |
| parent | 099ed980c4e137fe37a5150668561175aab87c0d (diff) | |
| download | mu-8a0268317fbce2baa2e5119c796750ea6c80a813.tar.gz | |
4084
subx: extract helpers for 'push' and 'pop'. We will be using them in 'call' and 'ret' as well.
Diffstat (limited to 'html/subx/011direct_addressing.cc.html')
| -rw-r--r-- | html/subx/011direct_addressing.cc.html | 112 |
1 files changed, 59 insertions, 53 deletions
diff --git a/html/subx/011direct_addressing.cc.html b/html/subx/011direct_addressing.cc.html index ba7a1e3b..7c348d47 100644 --- a/html/subx/011direct_addressing.cc.html +++ b/html/subx/011direct_addressing.cc.html @@ -287,59 +287,65 @@ if ('onhashchange' in window) { <span id="L222" class="LineNr">222 </span><span class="Special">% Reg[EBX].i = 0x0000000a;</span> <span id="L223" class="LineNr">223 </span><span class="Comment"># op ModRM SIB displacement immediate</span> <span id="L224" class="LineNr">224 </span> <span class="Constant">53</span> <span class="Comment"># push EBX (reg 3) to stack</span> -<span id="L225" class="LineNr">225 </span><span class="traceContains">+run: push <a href='010core.cc.html#L17'>reg</a> 3</span> -<span id="L226" class="LineNr">226 </span><span class="traceContains">+run: pushing value 0x0000000a</span> -<span id="L227" class="LineNr">227 </span><span class="traceContains">+run: <a href='010core.cc.html#L11'>ESP</a> is now 0x00000060</span> -<span id="L228" class="LineNr">228 </span><span class="traceContains">+run: <a href='003trace.cc.html#L74'>contents</a> at <a href='010core.cc.html#L11'>ESP</a>: 0x0000000a</span> -<span id="L229" class="LineNr">229 </span> -<span id="L230" class="LineNr">230 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> -<span id="L231" class="LineNr">231 </span><span class="Normal">case</span> <span class="Constant">0x50</span>: -<span id="L232" class="LineNr">232 </span><span class="Normal">case</span> <span class="Constant">0x51</span>: -<span id="L233" class="LineNr">233 </span><span class="Normal">case</span> <span class="Constant">0x52</span>: -<span id="L234" class="LineNr">234 </span><span class="Normal">case</span> <span class="Constant">0x53</span>: -<span id="L235" class="LineNr">235 </span><span class="Normal">case</span> <span class="Constant">0x54</span>: -<span id="L236" class="LineNr">236 </span><span class="Normal">case</span> <span class="Constant">0x55</span>: -<span id="L237" class="LineNr">237 </span><span class="Normal">case</span> <span class="Constant">0x56</span>: -<span id="L238" class="LineNr">238 </span><span class="Normal">case</span> <span class="Constant">0x57</span>: <span class="Delimiter">{</span> <span class="Comment">// push r32 to stack</span> -<span id="L239" class="LineNr">239 </span> <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op & <span class="Constant">0x7</span><span class="Delimiter">;</span> -<span id="L240" class="LineNr">240 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"push <a href='010core.cc.html#L17'>reg</a> "</span> << <a href='010core.cc.html#L232'>NUM</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L241" class="LineNr">241 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span> val = Reg[reg]<span class="Delimiter">.</span>u<span class="Delimiter">;</span> -<span id="L242" class="LineNr">242 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pushing value 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << val << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L243" class="LineNr">243 </span> Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L244" class="LineNr">244 </span> *<span class="Normal">reinterpret_cast</span><<span class="Normal">uint32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">))</span> = val<span class="Delimiter">;</span> -<span id="L245" class="LineNr">245 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"ESP is now 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << Reg[ESP]<span class="Delimiter">.</span>u << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L246" class="LineNr">246 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"contents at <a href='010core.cc.html#L11'>ESP</a>: 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << *<span class="Normal">reinterpret_cast</span><<span class="Normal">uint32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">))</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L247" class="LineNr">247 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L248" class="LineNr">248 </span><span class="Delimiter">}</span> -<span id="L249" class="LineNr">249 </span> -<span id="L250" class="LineNr">250 </span><span class="SalientComment">//:: pop</span> -<span id="L251" class="LineNr">251 </span> -<span id="L252" class="LineNr">252 </span><span class="Delimiter">:(scenario pop_r32)</span> -<span id="L253" class="LineNr">253 </span><span class="Special">% Reg[ESP].u = 0x60;</span> -<span id="L254" class="LineNr">254 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0000000a);</span> -<span id="L255" class="LineNr">255 </span><span class="Comment"># op ModRM SIB displacement immediate</span> -<span id="L256" class="LineNr">256 </span> 5b <span class="Comment"># pop stack to EBX (reg 3)</span> -<span id="L257" class="LineNr">257 </span><span class="traceContains">+run: pop into <a href='010core.cc.html#L17'>reg</a> 3</span> -<span id="L258" class="LineNr">258 </span><span class="traceContains">+run: popping value 0x0000000a</span> -<span id="L259" class="LineNr">259 </span><span class="traceContains">+run: <a href='010core.cc.html#L11'>ESP</a> is now 0x00000064</span> -<span id="L260" class="LineNr">260 </span> -<span id="L261" class="LineNr">261 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> -<span id="L262" class="LineNr">262 </span><span class="Normal">case</span> <span class="Constant">0x58</span>: -<span id="L263" class="LineNr">263 </span><span class="Normal">case</span> <span class="Constant">0x59</span>: -<span id="L264" class="LineNr">264 </span><span class="Normal">case</span> <span class="Constant">0x5a</span>: -<span id="L265" class="LineNr">265 </span><span class="Normal">case</span> <span class="Constant">0x5b</span>: -<span id="L266" class="LineNr">266 </span><span class="Normal">case</span> <span class="Constant">0x5c</span>: -<span id="L267" class="LineNr">267 </span><span class="Normal">case</span> <span class="Constant">0x5d</span>: -<span id="L268" class="LineNr">268 </span><span class="Normal">case</span> <span class="Constant">0x5e</span>: -<span id="L269" class="LineNr">269 </span><span class="Normal">case</span> <span class="Constant">0x5f</span>: <span class="Delimiter">{</span> <span class="Comment">// pop stack into r32</span> -<span id="L270" class="LineNr">270 </span> <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op & <span class="Constant">0x7</span><span class="Delimiter">;</span> -<span id="L271" class="LineNr">271 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pop into <a href='010core.cc.html#L17'>reg</a> "</span> << <a href='010core.cc.html#L232'>NUM</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L272" class="LineNr">272 </span> Reg[reg]<span class="Delimiter">.</span>u = *<span class="Normal">reinterpret_cast</span><<span class="Normal">uint32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">));</span> -<span id="L273" class="LineNr">273 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"popping value 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << Reg[reg]<span class="Delimiter">.</span>u << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L274" class="LineNr">274 </span> Reg[ESP]<span class="Delimiter">.</span>u += <span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L275" class="LineNr">275 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"ESP is now 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << Reg[ESP]<span class="Delimiter">.</span>u << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L276" class="LineNr">276 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L277" class="LineNr">277 </span><span class="Delimiter">}</span> +<span id="L225" class="LineNr">225 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L244'>push</a> <a href='010core.cc.html#L17'>reg</a> 3</span> +<span id="L226" class="LineNr">226 </span><span class="traceContains">+run: decrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000060</span> +<span id="L227" class="LineNr">227 </span><span class="traceContains">+run: pushing value 0x0000000a</span> +<span id="L228" class="LineNr">228 </span> +<span id="L229" class="LineNr">229 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> +<span id="L230" class="LineNr">230 </span><span class="Normal">case</span> <span class="Constant">0x50</span>: +<span id="L231" class="LineNr">231 </span><span class="Normal">case</span> <span class="Constant">0x51</span>: +<span id="L232" class="LineNr">232 </span><span class="Normal">case</span> <span class="Constant">0x52</span>: +<span id="L233" class="LineNr">233 </span><span class="Normal">case</span> <span class="Constant">0x53</span>: +<span id="L234" class="LineNr">234 </span><span class="Normal">case</span> <span class="Constant">0x54</span>: +<span id="L235" class="LineNr">235 </span><span class="Normal">case</span> <span class="Constant">0x55</span>: +<span id="L236" class="LineNr">236 </span><span class="Normal">case</span> <span class="Constant">0x56</span>: +<span id="L237" class="LineNr">237 </span><span class="Normal">case</span> <span class="Constant">0x57</span>: <span class="Delimiter">{</span> <span class="Comment">// push r32 to stack</span> +<span id="L238" class="LineNr">238 </span> <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op & <span class="Constant">0x7</span><span class="Delimiter">;</span> +<span id="L239" class="LineNr">239 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"push <a href='010core.cc.html#L17'>reg</a> "</span> << <a href='010core.cc.html#L232'>NUM</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L240" class="LineNr">240 </span> <a href='011direct_addressing.cc.html#L244'>push</a><span class="Delimiter">(</span>Reg[reg]<span class="Delimiter">.</span>u<span class="Delimiter">);</span> +<span id="L241" class="LineNr">241 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L242" class="LineNr">242 </span><span class="Delimiter">}</span> +<span id="L243" class="LineNr">243 </span><span class="Delimiter">:(code)</span> +<span id="L244" class="LineNr">244 </span><span class="Normal">void</span> <a href='011direct_addressing.cc.html#L244'>push</a><span class="Delimiter">(</span><span class="Normal">uint32_t</span> val<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L245" class="LineNr">245 </span> Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L246" class="LineNr">246 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"decrementing <a href='010core.cc.html#L11'>ESP</a> to 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << Reg[ESP]<span class="Delimiter">.</span>u << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L247" class="LineNr">247 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pushing value 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << val << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L248" class="LineNr">248 </span> *<span class="Normal">reinterpret_cast</span><<span class="Normal">uint32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">))</span> = val<span class="Delimiter">;</span> +<span id="L249" class="LineNr">249 </span><span class="Delimiter">}</span> +<span id="L250" class="LineNr">250 </span> +<span id="L251" class="LineNr">251 </span><span class="SalientComment">//:: pop</span> +<span id="L252" class="LineNr">252 </span> +<span id="L253" class="LineNr">253 </span><span class="Delimiter">:(scenario pop_r32)</span> +<span id="L254" class="LineNr">254 </span><span class="Special">% Reg[ESP].u = 0x60;</span> +<span id="L255" class="LineNr">255 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0000000a);</span> +<span id="L256" class="LineNr">256 </span><span class="Comment"># op ModRM SIB displacement immediate</span> +<span id="L257" class="LineNr">257 </span> 5b <span class="Comment"># pop stack to EBX (reg 3)</span> +<span id="L258" class="LineNr">258 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L277'>pop</a> into <a href='010core.cc.html#L17'>reg</a> 3</span> +<span id="L259" class="LineNr">259 </span><span class="traceContains">+run: popping value 0x0000000a</span> +<span id="L260" class="LineNr">260 </span><span class="traceContains">+run: incrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000064</span> +<span id="L261" class="LineNr">261 </span> +<span id="L262" class="LineNr">262 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> +<span id="L263" class="LineNr">263 </span><span class="Normal">case</span> <span class="Constant">0x58</span>: +<span id="L264" class="LineNr">264 </span><span class="Normal">case</span> <span class="Constant">0x59</span>: +<span id="L265" class="LineNr">265 </span><span class="Normal">case</span> <span class="Constant">0x5a</span>: +<span id="L266" class="LineNr">266 </span><span class="Normal">case</span> <span class="Constant">0x5b</span>: +<span id="L267" class="LineNr">267 </span><span class="Normal">case</span> <span class="Constant">0x5c</span>: +<span id="L268" class="LineNr">268 </span><span class="Normal">case</span> <span class="Constant">0x5d</span>: +<span id="L269" class="LineNr">269 </span><span class="Normal">case</span> <span class="Constant">0x5e</span>: +<span id="L270" class="LineNr">270 </span><span class="Normal">case</span> <span class="Constant">0x5f</span>: <span class="Delimiter">{</span> <span class="Comment">// pop stack into r32</span> +<span id="L271" class="LineNr">271 </span> <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op & <span class="Constant">0x7</span><span class="Delimiter">;</span> +<span id="L272" class="LineNr">272 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pop into <a href='010core.cc.html#L17'>reg</a> "</span> << <a href='010core.cc.html#L232'>NUM</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L273" class="LineNr">273 </span> Reg[reg]<span class="Delimiter">.</span>u = <a href='011direct_addressing.cc.html#L277'>pop</a><span class="Delimiter">();</span> +<span id="L274" class="LineNr">274 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L275" class="LineNr">275 </span><span class="Delimiter">}</span> +<span id="L276" class="LineNr">276 </span><span class="Delimiter">:(code)</span> +<span id="L277" class="LineNr">277 </span><span class="Normal">uint32_t</span> <a href='011direct_addressing.cc.html#L277'>pop</a><span class="Delimiter">()</span> <span class="Delimiter">{</span> +<span id="L278" class="LineNr">278 </span> <span class="Normal">uint32_t</span> result = *<span class="Normal">reinterpret_cast</span><<span class="Normal">uint32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">));</span> +<span id="L279" class="LineNr">279 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"popping value 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << result << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L280" class="LineNr">280 </span> Reg[ESP]<span class="Delimiter">.</span>u += <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L281" class="LineNr">281 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"incrementing <a href='010core.cc.html#L11'>ESP</a> to 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << Reg[ESP]<span class="Delimiter">.</span>u << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L282" class="LineNr">282 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span> +<span id="L283" class="LineNr">283 </span><span class="Delimiter">}</span> </pre> </body> </html> |