diff options
| -rw-r--r-- | html/subx/011direct_addressing.cc.html | 26 | ||||
| -rw-r--r-- | html/subx/012indirect_addressing.cc.html | 47 | ||||
| -rw-r--r-- | html/subx/013immediate_addressing.cc.html | 54 | ||||
| -rw-r--r-- | subx/011direct_addressing.cc | 26 | ||||
| -rw-r--r-- | subx/012indirect_addressing.cc | 41 | ||||
| -rw-r--r-- | subx/013immediate_addressing.cc | 22 |
6 files changed, 183 insertions, 33 deletions
diff --git a/html/subx/011direct_addressing.cc.html b/html/subx/011direct_addressing.cc.html index 1738b2a2..dba0b3cf 100644 --- a/html/subx/011direct_addressing.cc.html +++ b/html/subx/011direct_addressing.cc.html @@ -279,6 +279,32 @@ if ('onhashchange' in window) { <span id="L214" class="LineNr">214 </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">"storing 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << *arg1 << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> <span id="L215" class="LineNr">215 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span id="L216" class="LineNr">216 </span><span class="Delimiter">}</span> +<span id="L217" class="LineNr">217 </span> +<span id="L218" class="LineNr">218 </span><span class="SalientComment">//:: push</span> +<span id="L219" class="LineNr">219 </span> +<span id="L220" class="LineNr">220 </span><span class="Delimiter">:(scenario push_r32)</span> +<span id="L221" class="LineNr">221 </span><span class="Special">% Reg[ESP].u = 0x64;</span> +<span id="L222" class="LineNr">222 </span><span class="Special">% Reg[EBX].i = 10;</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">50</span> <span class="PreProc">0</span><span class="Constant">3</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 class="Delimiter">{</span> +<span id="L232" class="LineNr">232 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span> +<span id="L233" class="LineNr">233 </span> <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = modrm & <span class="Constant">0x7</span><span class="Delimiter">;</span> +<span id="L234" class="LineNr">234 </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="L235" class="LineNr">235 </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="L236" class="LineNr">236 </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="L237" class="LineNr">237 </span> Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L238" class="LineNr">238 </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="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">"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="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">"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="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> </pre> </body> </html> diff --git a/html/subx/012indirect_addressing.cc.html b/html/subx/012indirect_addressing.cc.html index d04c442e..2643bcaf 100644 --- a/html/subx/012indirect_addressing.cc.html +++ b/html/subx/012indirect_addressing.cc.html @@ -392,16 +392,43 @@ if ('onhashchange' in window) { <span id="L327" class="LineNr">327 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span> <span id="L328" class="LineNr">328 </span> <span class="Normal">uint8_t</span> subop = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span> <span class="Comment">// middle 3 'reg opcode' bits</span> <span id="L329" class="LineNr">329 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>subop<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L330" class="LineNr">330 </span> <span class="Normal">case</span> <span class="Constant">4</span>: -<span id="L331" class="LineNr">331 </span> <span class="Conceal">¦</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">"jump to effective address"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L332" class="LineNr">332 </span> <span class="Conceal">¦</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L26'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> -<span id="L333" class="LineNr">333 </span> <span class="Conceal">¦</span> <a href='010core.cc.html#L23'>EIP</a> = *arg2<span class="Delimiter">;</span> -<span id="L334" class="LineNr">334 </span> <span class="Conceal">¦</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">"jumping to 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << <a href='010core.cc.html#L23'>EIP</a> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L335" class="LineNr">335 </span> <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L336" class="LineNr">336 </span> <span class="Comment">// End Op ff Subops</span> -<span id="L337" class="LineNr">337 </span> <span class="Delimiter">}</span> -<span id="L338" class="LineNr">338 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L339" class="LineNr">339 </span><span class="Delimiter">}</span> +<span id="L330" class="LineNr">330 </span> <span class="Conceal">¦</span> <span class="Normal">case</span> <span class="Constant">4</span>: <span class="Delimiter">{</span> +<span id="L331" class="LineNr">331 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</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">"jump to effective address"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L332" class="LineNr">332 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L26'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> +<span id="L333" class="LineNr">333 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <a href='010core.cc.html#L23'>EIP</a> = *arg2<span class="Delimiter">;</span> +<span id="L334" class="LineNr">334 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</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">"jumping to 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << <a href='010core.cc.html#L23'>EIP</a> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L335" class="LineNr">335 </span> <span class="Conceal">¦</span> <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L336" class="LineNr">336 </span> <span class="Conceal">¦</span> <span class="Delimiter">}</span> +<span id="L337" class="LineNr">337 </span> <span class="Conceal">¦</span> <span class="Comment">// End Op ff Subops</span> +<span id="L338" class="LineNr">338 </span> <span class="Delimiter">}</span> +<span id="L339" class="LineNr">339 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L340" class="LineNr">340 </span><span class="Delimiter">}</span> +<span id="L341" class="LineNr">341 </span> +<span id="L342" class="LineNr">342 </span><span class="SalientComment">//:: push</span> +<span id="L343" class="LineNr">343 </span> +<span id="L344" class="LineNr">344 </span><span class="Delimiter">:(scenario push_mem_at_r32)</span> +<span id="L345" class="LineNr">345 </span><span class="Special">% Reg[0].i = 0x60;</span> +<span id="L346" class="LineNr">346 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x000000af);</span> +<span id="L347" class="LineNr">347 </span><span class="Special">% Reg[ESP].u = 0x14;</span> +<span id="L348" class="LineNr">348 </span><span class="Comment"># op ModRM SIB displacement immediate</span> +<span id="L349" class="LineNr">349 </span> ff <span class="Constant">30</span> <span class="Comment"># push *EAX (reg 0) to stack</span> +<span id="L350" class="LineNr">350 </span><span class="traceContains">+run: push effective address</span> +<span id="L351" class="LineNr">351 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 0)</span> +<span id="L352" class="LineNr">352 </span><span class="traceContains">+run: <a href='010core.cc.html#L11'>ESP</a> is now 0x00000010</span> +<span id="L353" class="LineNr">353 </span><span class="traceContains">+run: <a href='003trace.cc.html#L74'>contents</a> at <a href='010core.cc.html#L11'>ESP</a>: 0x000000af</span> +<span id="L354" class="LineNr">354 </span> +<span id="L355" class="LineNr">355 </span><span class="Delimiter">:(before "End Op ff Subops")</span> +<span id="L356" class="LineNr">356 </span><span class="Normal">case</span> <span class="Constant">6</span>: <span class="Delimiter">{</span> +<span id="L357" class="LineNr">357 </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 effective address"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L358" class="LineNr">358 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* val = <a href='011direct_addressing.cc.html#L26'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> +<span id="L359" class="LineNr">359 </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="L360" class="LineNr">360 </span> Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L361" class="LineNr">361 </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="L362" class="LineNr">362 </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="L363" class="LineNr">363 </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="L364" class="LineNr">364 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L365" class="LineNr">365 </span><span class="Delimiter">}</span> +<span id="L366" class="LineNr">366 </span> </pre> </body> </html> diff --git a/html/subx/013immediate_addressing.cc.html b/html/subx/013immediate_addressing.cc.html index bde49732..adaff3e0 100644 --- a/html/subx/013immediate_addressing.cc.html +++ b/html/subx/013immediate_addressing.cc.html @@ -414,22 +414,44 @@ if ('onhashchange' in window) { <span id="L350" class="LineNr">350 </span><span class="Delimiter">}</span> <span id="L351" class="LineNr">351 </span> <span id="L352" class="LineNr">352 </span><span class="Comment">//:</span> -<span id="L353" class="LineNr">353 </span><span class="Delimiter">:(scenario copy_imm32_to_mem_at_r32)</span> -<span id="L354" class="LineNr">354 </span><span class="Special">% Reg[3].i = 0x60;</span> -<span id="L355" class="LineNr">355 </span><span class="Comment"># op ModRM SIB displacement immediate</span> -<span id="L356" class="LineNr">356 </span> c7 <span class="PreProc">0</span><span class="Constant">3</span> 0a 0b 0c 0d <span class="Comment"># copy 0x0d0c0b0a to *EBX (reg 3)</span> -<span id="L357" class="LineNr">357 </span><span class="traceContains">+run: copy <a href='010core.cc.html#L219'>imm32</a> 0x0d0c0b0a to effective address</span> -<span id="L358" class="LineNr">358 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 3)</span> -<span id="L359" class="LineNr">359 </span> -<span id="L360" class="LineNr">360 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> -<span id="L361" class="LineNr">361 </span><span class="Normal">case</span> <span class="Constant">0xc7</span>: <span class="Delimiter">{</span> <span class="Comment">// copy imm32 to r32</span> -<span id="L362" class="LineNr">362 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span> -<span id="L363" class="LineNr">363 </span> <span class="Normal">int32_t</span> arg2 = <a href='010core.cc.html#L219'>imm32</a><span class="Delimiter">();</span> -<span id="L364" class="LineNr">364 </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">"copy <a href='010core.cc.html#L219'>imm32</a> 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << arg2 << <span class="Constant">" to effective address"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> -<span id="L365" class="LineNr">365 </span> <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L26'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> -<span id="L366" class="LineNr">366 </span> *arg1 = arg2<span class="Delimiter">;</span> -<span id="L367" class="LineNr">367 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L368" class="LineNr">368 </span><span class="Delimiter">}</span> +<span id="L353" class="LineNr">353 </span> +<span id="L354" class="LineNr">354 </span><span class="Delimiter">:(scenario copy_imm32_to_mem_at_r32)</span> +<span id="L355" class="LineNr">355 </span><span class="Special">% Reg[3].i = 0x60;</span> +<span id="L356" class="LineNr">356 </span><span class="Comment"># op ModRM SIB displacement immediate</span> +<span id="L357" class="LineNr">357 </span> c7 <span class="PreProc">0</span><span class="Constant">3</span> 0a 0b 0c 0d <span class="Comment"># copy 0x0d0c0b0a to *EBX (reg 3)</span> +<span id="L358" class="LineNr">358 </span><span class="traceContains">+run: copy <a href='010core.cc.html#L219'>imm32</a> 0x0d0c0b0a to effective address</span> +<span id="L359" class="LineNr">359 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 3)</span> +<span id="L360" class="LineNr">360 </span> +<span id="L361" class="LineNr">361 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> +<span id="L362" class="LineNr">362 </span><span class="Normal">case</span> <span class="Constant">0xc7</span>: <span class="Delimiter">{</span> <span class="Comment">// copy imm32 to r32</span> +<span id="L363" class="LineNr">363 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span> +<span id="L364" class="LineNr">364 </span> <span class="Normal">int32_t</span> arg2 = <a href='010core.cc.html#L219'>imm32</a><span class="Delimiter">();</span> +<span id="L365" class="LineNr">365 </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">"copy <a href='010core.cc.html#L219'>imm32</a> 0x"</span> << <a href='010core.cc.html#L230'>HEXWORD</a> << arg2 << <span class="Constant">" to effective address"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L366" class="LineNr">366 </span> <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L26'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> +<span id="L367" class="LineNr">367 </span> *arg1 = arg2<span class="Delimiter">;</span> +<span id="L368" class="LineNr">368 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L369" class="LineNr">369 </span><span class="Delimiter">}</span> +<span id="L370" class="LineNr">370 </span> +<span id="L371" class="LineNr">371 </span><span class="SalientComment">//:: push</span> +<span id="L372" class="LineNr">372 </span> +<span id="L373" class="LineNr">373 </span><span class="Delimiter">:(scenario push_imm32)</span> +<span id="L374" class="LineNr">374 </span><span class="Special">% Reg[ESP].u = 0x14;</span> +<span id="L375" class="LineNr">375 </span><span class="Comment"># op ModRM SIB displacement immediate</span> +<span id="L376" class="LineNr">376 </span> <span class="Constant">68</span> af <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># push *EAX (reg 0) to stack</span> +<span id="L377" class="LineNr">377 </span><span class="traceContains">+run: push <a href='010core.cc.html#L219'>imm32</a> 0x000000af</span> +<span id="L378" class="LineNr">378 </span><span class="traceContains">+run: <a href='010core.cc.html#L11'>ESP</a> is now 0x00000010</span> +<span id="L379" class="LineNr">379 </span><span class="traceContains">+run: <a href='003trace.cc.html#L74'>contents</a> at <a href='010core.cc.html#L11'>ESP</a>: 0x000000af</span> +<span id="L380" class="LineNr">380 </span> +<span id="L381" class="LineNr">381 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> +<span id="L382" class="LineNr">382 </span><span class="Normal">case</span> <span class="Constant">0x68</span>: <span class="Delimiter">{</span> +<span id="L383" class="LineNr">383 </span> <span class="Normal">int32_t</span> val = <a href='010core.cc.html#L219'>imm32</a><span class="Delimiter">();</span> +<span id="L384" class="LineNr">384 </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#L219'>imm32</a> 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="L385" class="LineNr">385 </span> Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L386" class="LineNr">386 </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="L387" class="LineNr">387 </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="L388" class="LineNr">388 </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="L389" class="LineNr">389 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> +<span id="L390" class="LineNr">390 </span><span class="Delimiter">}</span> </pre> </body> </html> diff --git a/subx/011direct_addressing.cc b/subx/011direct_addressing.cc index f474ac99..2defcfec 100644 --- a/subx/011direct_addressing.cc +++ b/subx/011direct_addressing.cc @@ -214,3 +214,29 @@ case 0x89: { // copy r32 to r/m32 trace(2, "run") << "storing 0x" << HEXWORD << *arg1 << end(); break; } + +//:: push + +:(scenario push_r32) +% Reg[ESP].u = 0x64; +% Reg[EBX].i = 10; +# op ModRM SIB displacement immediate + 50 03 # push EBX (reg 3) to stack ++run: push reg 3 ++run: pushing value 0x0000000a ++run: ESP is now 0x00000060 ++run: contents at ESP: 0x0000000a + +:(before "End Single-Byte Opcodes") +case 0x50: { + uint8_t modrm = next(); + uint8_t reg = modrm & 0x7; + trace(2, "run") << "push reg " << NUM(reg) << end(); + const int32_t val = Reg[reg].u; + trace(2, "run") << "pushing value 0x" << HEXWORD << val << end(); + Reg[ESP].u -= 4; + *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) = val; + trace(2, "run") << "ESP is now 0x" << HEXWORD << Reg[ESP].u << end(); + trace(2, "run") << "contents at ESP: 0x" << HEXWORD << *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) << end(); + break; +} diff --git a/subx/012indirect_addressing.cc b/subx/012indirect_addressing.cc index 1bf5e378..b4821856 100644 --- a/subx/012indirect_addressing.cc +++ b/subx/012indirect_addressing.cc @@ -327,13 +327,40 @@ case 0xff: { // jump to r/m32 uint8_t modrm = next(); uint8_t subop = (modrm>>3)&0x7; // middle 3 'reg opcode' bits switch (subop) { - case 4: - trace(2, "run") << "jump to effective address" << end(); - int32_t* arg2 = effective_address(modrm); - EIP = *arg2; - trace(2, "run") << "jumping to 0x" << HEXWORD << EIP << end(); - break; - // End Op ff Subops + case 4: { + trace(2, "run") << "jump to effective address" << end(); + int32_t* arg2 = effective_address(modrm); + EIP = *arg2; + trace(2, "run") << "jumping to 0x" << HEXWORD << EIP << end(); + break; + } + // End Op ff Subops } break; } + +//:: push + +:(scenario push_mem_at_r32) +% Reg[0].i = 0x60; +% SET_WORD_IN_MEM(0x60, 0x000000af); +% Reg[ESP].u = 0x14; +# op ModRM SIB displacement immediate + ff 30 # push *EAX (reg 0) to stack ++run: push effective address ++run: effective address is mem at address 0x60 (reg 0) ++run: ESP is now 0x00000010 ++run: contents at ESP: 0x000000af + +:(before "End Op ff Subops") +case 6: { + trace(2, "run") << "push effective address" << end(); + const int32_t* val = effective_address(modrm); + trace(2, "run") << "pushing value 0x" << HEXWORD << *val << end(); + Reg[ESP].u -= 4; + *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) = *val; + trace(2, "run") << "ESP is now 0x" << HEXWORD << Reg[ESP].u << end(); + trace(2, "run") << "contents at ESP: 0x" << HEXWORD << *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) << end(); + break; +} + diff --git a/subx/013immediate_addressing.cc b/subx/013immediate_addressing.cc index dd1ce4c0..2e4b459a 100644 --- a/subx/013immediate_addressing.cc +++ b/subx/013immediate_addressing.cc @@ -350,6 +350,7 @@ case 0xb8: { // copy imm32 to r32 } //: + :(scenario copy_imm32_to_mem_at_r32) % Reg[3].i = 0x60; # op ModRM SIB displacement immediate @@ -366,3 +367,24 @@ case 0xc7: { // copy imm32 to r32 *arg1 = arg2; break; } + +//:: push + +:(scenario push_imm32) +% Reg[ESP].u = 0x14; +# op ModRM SIB displacement immediate + 68 af 00 00 00 # push *EAX (reg 0) to stack ++run: push imm32 0x000000af ++run: ESP is now 0x00000010 ++run: contents at ESP: 0x000000af + +:(before "End Single-Byte Opcodes") +case 0x68: { + int32_t val = imm32(); + trace(2, "run") << "push imm32 0x" << HEXWORD << val << end(); + Reg[ESP].u -= 4; + *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) = val; + trace(2, "run") << "ESP is now 0x" << HEXWORD << Reg[ESP].u << end(); + trace(2, "run") << "contents at ESP: 0x" << HEXWORD << *reinterpret_cast<uint32_t*>(&Mem.at(Reg[ESP].u)) << end(); + break; +} |