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| author | Kartik K. Agaram <vc@akkartik.com> | 2017-10-12 23:55:19 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2017-10-12 23:55:19 -0700 |
| commit | 7a219c68bae6dbe214aec69a051015e851e32400 (patch) | |
| tree | 40210836b68dcc2a3b84db487e30ccd7b199835b /html/subx/012indirect_addressing.cc.html | |
| parent | f829120a621b539dfef0d8c5605c8825aa998d7b (diff) | |
| download | mu-7a219c68bae6dbe214aec69a051015e851e32400.tar.gz | |
4054
Diffstat (limited to 'html/subx/012indirect_addressing.cc.html')
| -rw-r--r-- | html/subx/012indirect_addressing.cc.html | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/html/subx/012indirect_addressing.cc.html b/html/subx/012indirect_addressing.cc.html index b5360e6f..8f90ff92 100644 --- a/html/subx/012indirect_addressing.cc.html +++ b/html/subx/012indirect_addressing.cc.html @@ -70,7 +70,7 @@ if ('onhashchange' in window) { <span id="L7" class="LineNr"> 7 </span><span class="Special">% Mem.at(0x60) = 1;</span> <span id="L8" class="LineNr"> 8 </span><span class="Comment"># op ModR/M SIB displacement immediate</span> <span id="L9" class="LineNr"> 9 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">18</span> <span class="Comment"># add EBX (reg 3) to *EAX (reg 0)</span> -<span id="L10" class="LineNr">10 </span><span class="traceContains">+run: add reg 3 to effective address</span> +<span id="L10" class="LineNr">10 </span><span class="traceContains">+run: add <a href='010core.cc.html#L15'>reg</a> 3 to effective address</span> <span id="L11" class="LineNr">11 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 0)</span> <span id="L12" class="LineNr">12 </span><span class="traceContains">+run: storing 0x00000011</span> <span id="L13" class="LineNr">13 </span> @@ -79,9 +79,9 @@ if ('onhashchange' in window) { <span id="L16" class="LineNr">16 </span> <span class="Comment">// mod 0 is usually indirect addressing</span> <span id="L17" class="LineNr">17 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>rm<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span id="L18" class="LineNr">18 </span> <span class="Normal">default</span>: -<span id="L19" class="LineNr">19 </span> <span class="Conceal">¦</span> trace<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">"effective address is mem at address 0x"</span> << std::hex << Reg[rm]<span class="Delimiter">.</span>u << <span class="Constant">" (reg "</span> << NUM<span class="Delimiter">(</span>rm<span class="Delimiter">)</span> << <span class="Constant">")"</span> << end<span class="Delimiter">();</span> -<span id="L20" class="LineNr">20 </span> <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Reg[rm]<span class="Delimiter">.</span>u + <span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">int32_t</span><span class="Delimiter">)</span> <= Mem<span class="Delimiter">.</span>size<span class="Delimiter">());</span> -<span id="L21" class="LineNr">21 </span> <span class="Conceal">¦</span> result = <span class="Normal">reinterpret_cast</span><<span class="Normal">int32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[rm]<span class="Delimiter">.</span>u<span class="Delimiter">));</span> <span class="Comment">// rely on the host itself being in little-endian order</span> +<span id="L19" class="LineNr">19 </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">"effective address is mem at address 0x"</span> << std::hex << Reg[rm]<span class="Delimiter">.</span><a href='010core.cc.html#L17'>u</a> << <span class="Constant">" (reg "</span> << <a href='010core.cc.html#L220'>NUM</a><span class="Delimiter">(</span>rm<span class="Delimiter">)</span> << <span class="Constant">")"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L20" class="LineNr">20 </span> <span class="Conceal">¦</span> assert<span class="Delimiter">(</span>Reg[rm]<span class="Delimiter">.</span><a href='010core.cc.html#L17'>u</a> + <span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">int32_t</span><span class="Delimiter">)</span> <= <a href='010core.cc.html#L61'>Mem</a><span class="Delimiter">.</span>size<span class="Delimiter">());</span> +<span id="L21" class="LineNr">21 </span> <span class="Conceal">¦</span> result = <span class="Normal">reinterpret_cast</span><<span class="Normal">int32_t</span>*><span class="Delimiter">(</span>&Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[rm]<span class="Delimiter">.</span><a href='010core.cc.html#L17'>u</a><span class="Delimiter">));</span> <span class="Comment">// rely on the host itself being in little-endian order</span> <span id="L22" class="LineNr">22 </span> <span class="Conceal">¦</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span id="L23" class="LineNr">23 </span> <span class="Comment">// End Mod 0 Special-cases</span> <span id="L24" class="LineNr">24 </span> <span class="Delimiter">}</span> @@ -95,17 +95,17 @@ if ('onhashchange' in window) { <span id="L32" class="LineNr">32 </span><span class="Special">% Mem.at(0x60) = 1;</span> <span id="L33" class="LineNr">33 </span><span class="Comment"># op ModR/M SIB displacement immediate</span> <span id="L34" class="LineNr">34 </span> <span class="PreProc">0</span><span class="Constant">3</span> <span class="Constant">18</span> <span class="Comment"># add *EAX (reg 0) to EBX (reg 3)</span> -<span id="L35" class="LineNr">35 </span><span class="traceContains">+run: add effective address to reg 3</span> +<span id="L35" class="LineNr">35 </span><span class="traceContains">+run: add effective address to <a href='010core.cc.html#L15'>reg</a> 3</span> <span id="L36" class="LineNr">36 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 0)</span> <span id="L37" class="LineNr">37 </span><span class="traceContains">+run: storing 0x00000011</span> <span id="L38" class="LineNr">38 </span> <span id="L39" class="LineNr">39 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> <span id="L40" class="LineNr">40 </span><span class="Normal">case</span> <span class="Constant">0x03</span>: <span class="Delimiter">{</span> <span class="Comment">// add r/m32 to r32</span> -<span id="L41" class="LineNr">41 </span> <span class="Normal">uint8_t</span> modrm = next<span class="Delimiter">();</span> +<span id="L41" class="LineNr">41 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L202'>next</a><span class="Delimiter">();</span> <span id="L42" class="LineNr">42 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span> -<span id="L43" class="LineNr">43 </span> trace<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">"add effective address to reg "</span> << NUM<span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << end<span class="Delimiter">();</span> -<span id="L44" class="LineNr">44 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = effective_address<span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> -<span id="L45" class="LineNr">45 </span> BINARY_ARITHMETIC_OP<span class="Delimiter">(</span>+<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>i<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span> +<span id="L43" class="LineNr">43 </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">"add effective address to <a href='010core.cc.html#L15'>reg</a> "</span> << <a href='010core.cc.html#L220'>NUM</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L44" class="LineNr">44 </span> <span class="Normal">const</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="L45" class="LineNr">45 </span> <a href='010core.cc.html#L39'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>+<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span><a href='010core.cc.html#L16'>i</a><span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span> <span id="L46" class="LineNr">46 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span id="L47" class="LineNr">47 </span><span class="Delimiter">}</span> <span id="L48" class="LineNr">48 </span> @@ -117,7 +117,7 @@ if ('onhashchange' in window) { <span id="L54" class="LineNr">54 </span><span class="Special">% Reg[3].i = 1;</span> <span id="L55" class="LineNr">55 </span><span class="Comment"># op ModRM SIB displacement immediate</span> <span id="L56" class="LineNr">56 </span> <span class="Constant">29</span> <span class="Constant">18</span> <span class="Comment"># subtract EBX (reg 3) from *EAX (reg 0)</span> -<span id="L57" class="LineNr">57 </span><span class="traceContains">+run: subtract reg 3 from effective address</span> +<span id="L57" class="LineNr">57 </span><span class="traceContains">+run: subtract <a href='010core.cc.html#L15'>reg</a> 3 from effective address</span> <span id="L58" class="LineNr">58 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 0)</span> <span id="L59" class="LineNr">59 </span><span class="traceContains">+run: storing 0x00000009</span> <span id="L60" class="LineNr">60 </span> @@ -129,17 +129,17 @@ if ('onhashchange' in window) { <span id="L66" class="LineNr">66 </span><span class="Special">% Reg[3].i = 10;</span> <span id="L67" class="LineNr">67 </span><span class="Comment"># op ModRM SIB displacement immediate</span> <span id="L68" class="LineNr">68 </span> 2b <span class="Constant">18</span> <span class="Comment"># subtract *EAX (reg 0) from EBX (reg 3)</span> -<span id="L69" class="LineNr">69 </span><span class="traceContains">+run: subtract effective address from reg 3</span> +<span id="L69" class="LineNr">69 </span><span class="traceContains">+run: subtract effective address from <a href='010core.cc.html#L15'>reg</a> 3</span> <span id="L70" class="LineNr">70 </span><span class="traceContains">+run: effective address is mem at address 0x60 (reg 0)</span> <span id="L71" class="LineNr">71 </span><span class="traceContains">+run: storing 0x00000009</span> <span id="L72" class="LineNr">72 </span> <span id="L73" class="LineNr">73 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span> <span id="L74" class="LineNr">74 </span><span class="Normal">case</span> <span class="Constant">0x2b</span>: <span class="Delimiter">{</span> <span class="Comment">// subtract r/m32 from r32</span> -<span id="L75" class="LineNr">75 </span> <span class="Normal">uint8_t</span> modrm = next<span class="Delimiter">();</span> +<span id="L75" class="LineNr">75 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L202'>next</a><span class="Delimiter">();</span> <span id="L76" class="LineNr">76 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span> -<span id="L77" class="LineNr">77 </span> trace<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">"subtract effective address from reg "</span> << NUM<span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << end<span class="Delimiter">();</span> -<span id="L78" class="LineNr">78 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = effective_address<span class="Delimiter">(</span>modrm<span class="Delimiter">);</span> -<span id="L79" class="LineNr">79 </span> BINARY_ARITHMETIC_OP<span class="Delimiter">(</span>-<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>i<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span> +<span id="L77" class="LineNr">77 </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">"subtract effective address from <a href='010core.cc.html#L15'>reg</a> "</span> << <a href='010core.cc.html#L220'>NUM</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span> +<span id="L78" class="LineNr">78 </span> <span class="Normal">const</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="L79" class="LineNr">79 </span> <a href='010core.cc.html#L39'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>-<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span><a href='010core.cc.html#L16'>i</a><span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span> <span id="L80" class="LineNr">80 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span id="L81" class="LineNr">81 </span><span class="Delimiter">}</span> </pre> |