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<title>Mu - subx/030---operands.cc</title>
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<a href='https://github.com/akkartik/mu/blob/master/subx/030---operands.cc'>https://github.com/akkartik/mu/blob/master/subx/030---operands.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Beginning of "level 2": tagging bytes with metadata around what field of</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: an x86 instruction they're for.</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: The x86 instruction set is variable-length, and how a byte is interpreted</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: affects later instruction boundaries. A lot of the pain in programming</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment">//: machine code stems from computer and programmer going out of sync on what</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment">//: a byte means. The miscommunication is usually not immediately caught, and</span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: metastasizes at runtime into kilobytes of misinterpreted instructions.</span>
<span id="L9" class="LineNr"> 9 </span><span class="Comment">//:</span>
<span id="L10" class="LineNr"> 10 </span><span class="Comment">//: To mitigate these issues, we'll start programming in terms of logical</span>
<span id="L11" class="LineNr"> 11 </span><span class="Comment">//: operands rather than physical bytes. Some operands are smaller than a</span>
<span id="L12" class="LineNr"> 12 </span><span class="Comment">//: byte, and others may consist of multiple bytes. This layer will correctly</span>
<span id="L13" class="LineNr"> 13 </span><span class="Comment">//: pack and order the bytes corresponding to the operands in an instruction.</span>
<span id="L14" class="LineNr"> 14 </span>
<span id="L15" class="LineNr"> 15 </span><span class="Delimiter">:(before "End <a href='001help.cc.html#L53'>Help</a> Texts")</span>
<span id="L16" class="LineNr"> 16 </span><a href='001help.cc.html#L262'>put_new</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"instructions"</span><span class="Delimiter">,</span>
<span id="L17" class="LineNr"> 17 </span> <span class="Constant">"Each x86 instruction consists of an instruction or opcode and some number\n"</span>
<span id="L18" class="LineNr"> 18 </span> <span class="Constant">"of operands.\n"</span>
<span id="L19" class="LineNr"> 19 </span> <span class="Constant">"Each operand has a type. An instruction won't have more than one operand of\n"</span>
<span id="L20" class="LineNr"> 20 </span> <span class="Constant">"any type.\n"</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Constant">"Each instruction has some set of allowed operand types. It'll reject others.\n"</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Constant">"The complete list of operand <a href='031check_operands.cc.html#L434'>types</a>: mod, subop, r32 (register), rm32\n"</span>
<span id="L23" class="LineNr"> 23 </span> <span class="Constant">"(register or memory), scale, index, base, disp8, disp16, disp32, imm8,\n"</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Constant">"imm32.\n"</span>
<span id="L25" class="LineNr"> 25 </span> <span class="Constant">"Each of these has its own help page. Try reading 'subx help mod' next.\n"</span>
<span id="L26" class="LineNr"> 26 </span><span class="Delimiter">);</span>
<span id="L27" class="LineNr"> 27 </span><span class="Delimiter">:(before "End <a href='001help.cc.html#L53'>Help</a> Contents")</span>
<span id="L28" class="LineNr"> 28 </span>cerr << <span class="Constant">" instructions\n"</span><span class="Delimiter">;</span>
<span id="L29" class="LineNr"> 29 </span>
<span id="L30" class="LineNr"> 30 </span><span class="Delimiter">:(scenario pack_immediate_constants)</span>
<span id="L31" class="LineNr"> 31 </span>== <span class="Constant">0x1</span>
<span id="L32" class="LineNr"> 32 </span>bb <span class="Constant">0x2a</span>/imm32
<span id="L33" class="LineNr"> 33 </span><span class="traceContains">+transform: packing instruction 'bb 0x2a/imm32'</span>
<span id="L34" class="LineNr"> 34 </span><span class="traceContains">+transform: instruction after packing: 'bb 2a 00 00 00'</span>
<span id="L35" class="LineNr"> 35 </span><span class="traceContains">+run: copy <a href='037heap.cc.html#L23'>imm32</a> 0x0000002a to <a href='010---vm.cc.html#L16'>EBX</a></span>
<span id="L36" class="LineNr"> 36 </span>
<span id="L37" class="LineNr"> 37 </span><span class="Comment">//: complete set of valid operand types</span>
<span id="L38" class="LineNr"> 38 </span>
<span id="L39" class="LineNr"> 39 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L40" class="LineNr"> 40 </span>set<string> <span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">;</span>
<span id="L41" class="LineNr"> 41 </span><span class="Delimiter">:(before "End One-time Setup")</span>
<span id="L42" class="LineNr"> 42 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"subop"</span><span class="Delimiter">);</span>
<span id="L43" class="LineNr"> 43 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"mod"</span><span class="Delimiter">);</span>
<span id="L44" class="LineNr"> 44 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"rm32"</span><span class="Delimiter">);</span>
<span id="L45" class="LineNr"> 45 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"base"</span><span class="Delimiter">);</span>
<span id="L46" class="LineNr"> 46 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"index"</span><span class="Delimiter">);</span>
<span id="L47" class="LineNr"> 47 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"scale"</span><span class="Delimiter">);</span>
<span id="L48" class="LineNr"> 48 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"r32"</span><span class="Delimiter">);</span>
<span id="L49" class="LineNr"> 49 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"disp8"</span><span class="Delimiter">);</span>
<span id="L50" class="LineNr"> 50 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"disp16"</span><span class="Delimiter">);</span>
<span id="L51" class="LineNr"> 51 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"disp32"</span><span class="Delimiter">);</span>
<span id="L52" class="LineNr"> 52 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"imm8"</span><span class="Delimiter">);</span>
<span id="L53" class="LineNr"> 53 </span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"imm32"</span><span class="Delimiter">);</span>
<span id="L54" class="LineNr"> 54 </span>
<span id="L55" class="LineNr"> 55 </span><span class="Delimiter">:(before "End <a href='001help.cc.html#L53'>Help</a> Texts")</span>
<span id="L56" class="LineNr"> 56 </span><a href='030---operands.cc.html#L58'>init_operand_type_help</a><span class="Delimiter">();</span>
<span id="L57" class="LineNr"> 57 </span><span class="Delimiter">:(code)</span>
<span id="L58" class="LineNr"> 58 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L58'>init_operand_type_help</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L59" class="LineNr"> 59 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"mod"</span><span class="Delimiter">,</span>
<span id="L60" class="LineNr"> 60 </span> <span class="Constant">"2-bit operand controlling the _addressing mode_ of many instructions,\n"</span>
<span id="L61" class="LineNr"> 61 </span> <span class="Constant">"to determine how to compute the _effective address_ to look up memory at\n"</span>
<span id="L62" class="LineNr"> 62 </span> <span class="Constant">"based on the 'rm32' operand and potentially others.\n"</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Constant">"\n"</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Constant">"If mod = 3, just operate on the <a href='003trace.cc.html#L74'>contents</a> of the register specified by rm32\n"</span>
<span id="L65" class="LineNr"> 65 </span> <span class="Constant">" (direct mode).\n"</span>
<span id="L66" class="LineNr"> 66 </span> <span class="Constant">"If mod = 2, effective address is usually* rm32 + disp32\n"</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Constant">" (indirect mode with displacement).\n"</span>
<span id="L68" class="LineNr"> 68 </span> <span class="Constant">"If mod = 1, effective address is usually* rm32 + disp8\n"</span>
<span id="L69" class="LineNr"> 69 </span> <span class="Constant">" (indirect mode with displacement).\n"</span>
<span id="L70" class="LineNr"> 70 </span> <span class="Constant">"If mod = 0, effective address is usually* rm32 (indirect mode).\n"</span>
<span id="L71" class="LineNr"> 71 </span> <span class="Constant">"(* - The exception is when rm32 is '4'. Register 4 is the stack pointer (ESP).\n"</span>
<span id="L72" class="LineNr"> 72 </span> <span class="Constant">" Using it as an address gets more involved. For more details,\n"</span>
<span id="L73" class="LineNr"> 73 </span> <span class="Constant">" try reading the help pages for 'base', 'index' and 'scale'.)\n"</span>
<span id="L74" class="LineNr"> 74 </span> <span class="Constant">"\n"</span>
<span id="L75" class="LineNr"> 75 </span> <span class="Constant">"For complete details, spend some time with two tables in the IA-32 software\n"</span>
<span id="L76" class="LineNr"> 76 </span> <span class="Constant">"developer's manual that are also included in this repo:\n"</span>
<span id="L77" class="LineNr"> 77 </span> <span class="Constant">" - modrm.pdf: volume 2, table 2-2, \"</span><span class="Constant">32</span>-bit addressing with the ModR/<span class="Special">M</span> byte<span class="Delimiter">.</span>\<span class="Constant">".\n"</span>
<span id="L78" class="LineNr"> 78 </span> <span class="Constant">" - sib.pdf: volume 2, table 2-3, \"</span><span class="Constant">32</span>-bit addressing with the SIB byte<span class="Delimiter">.</span>\<span class="Constant">".\n"</span>
<span id="L79" class="LineNr"> 79 </span> <span class="Delimiter">);</span>
<span id="L80" class="LineNr"> 80 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"subop"</span><span class="Delimiter">,</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Constant">"Additional 3-bit operand for determining the instruction when the opcode is 81, 8f or ff.\n"</span>
<span id="L82" class="LineNr"> 82 </span> <span class="Constant">"Can't coexist with operand of type 'r32' in a single instruction, because the two use the same bits.\n"</span>
<span id="L83" class="LineNr"> 83 </span> <span class="Delimiter">);</span>
<span id="L84" class="LineNr"> 84 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"r32"</span><span class="Delimiter">,</span>
<span id="L85" class="LineNr"> 85 </span> <span class="Constant">"3-bit operand specifying a register operand used directly, without any further addressing modes.\n"</span>
<span id="L86" class="LineNr"> 86 </span> <span class="Delimiter">);</span>
<span id="L87" class="LineNr"> 87 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"rm32"</span><span class="Delimiter">,</span>
<span id="L88" class="LineNr"> 88 </span> <span class="Constant">"32-bit value in register or memory. The precise details of its construction\n"</span>
<span id="L89" class="LineNr"> 89 </span> <span class="Constant">"depend on the eponymous 3-bit 'rm32' operand, the 'mod' operand, and also\n"</span>
<span id="L90" class="LineNr"> 90 </span> <span class="Constant">"potentially the 'SIB' operands ('scale', 'index' and 'base') and a displacement\n"</span>
<span id="L91" class="LineNr"> 91 </span> <span class="Constant">"('disp8' or 'disp32').\n"</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Constant">"\n"</span>
<span id="L93" class="LineNr"> 93 </span> <span class="Constant">"For complete details, spend some time with two tables in the IA-32 software\n"</span>
<span id="L94" class="LineNr"> 94 </span> <span class="Constant">"developer's manual that are also included in this repo:\n"</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Constant">" - modrm.pdf: volume 2, table 2-2, \"</span><span class="Constant">32</span>-bit addressing with the ModR/<span class="Special">M</span> byte<span class="Delimiter">.</span>\<span class="Constant">".\n"</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Constant">" - sib.pdf: volume 2, table 2-3, \"</span><span class="Constant">32</span>-bit addressing with the SIB byte<span class="Delimiter">.</span>\<span class="Constant">".\n"</span>
<span id="L97" class="LineNr"> 97 </span> <span class="Delimiter">);</span>
<span id="L98" class="LineNr"> 98 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"base"</span><span class="Delimiter">,</span>
<span id="L99" class="LineNr"> 99 </span> <span class="Constant">"Additional 3-bit operand (when 'rm32' is 4, unless 'mod' is 3) specifying the\n"</span>
<span id="L100" class="LineNr">100 </span> <span class="Constant">"register containing an address to look up.\n"</span>
<span id="L101" class="LineNr">101 </span> <span class="Constant">"This address may be further modified by 'index' and 'scale' operands.\n"</span>
<span id="L102" class="LineNr">102 </span> <span class="Constant">" effective address = base + index*scale + displacement (disp8 or disp32)\n"</span>
<span id="L103" class="LineNr">103 </span> <span class="Constant">"For complete details, spend some time with the IA-32 software developer's manual,\n"</span>
<span id="L104" class="LineNr">104 </span> <span class="Constant">"volume 2, table 2-3, \"</span><span class="Constant">32</span>-bit addressing with the SIB byte\<span class="Constant">".\n"</span>
<span id="L105" class="LineNr">105 </span> <span class="Constant">"It is included in this repository as 'sib.pdf'.\n"</span>
<span id="L106" class="LineNr">106 </span> <span class="Delimiter">);</span>
<span id="L107" class="LineNr">107 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"index"</span><span class="Delimiter">,</span>
<span id="L108" class="LineNr">108 </span> <span class="Constant">"Optional 3-bit operand (when 'rm32' is 4 unless 'mod' is 3) that can be added to\n"</span>
<span id="L109" class="LineNr">109 </span> <span class="Constant">"the 'base' operand to compute the 'effective address' at which to look up memory.\n"</span>
<span id="L110" class="LineNr">110 </span> <span class="Constant">" effective address = base + index*scale + displacement (disp8 or disp32)\n"</span>
<span id="L111" class="LineNr">111 </span> <span class="Constant">"For complete details, spend some time with the IA-32 software developer's manual,\n"</span>
<span id="L112" class="LineNr">112 </span> <span class="Constant">"volume 2, table 2-3, \"</span><span class="Constant">32</span>-bit addressing with the SIB byte\<span class="Constant">".\n"</span>
<span id="L113" class="LineNr">113 </span> <span class="Constant">"It is included in this repository as 'sib.pdf'.\n"</span>
<span id="L114" class="LineNr">114 </span> <span class="Delimiter">);</span>
<span id="L115" class="LineNr">115 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"scale"</span><span class="Delimiter">,</span>
<span id="L116" class="LineNr">116 </span> <span class="Constant">"Optional 2-bit operand (when 'rm32' is 4 unless 'mod' is 3) that encodes a\n"</span>
<span id="L117" class="LineNr">117 </span> <span class="Constant">"power of 2 to be multiplied to the 'index' operand before adding the result to\n"</span>
<span id="L118" class="LineNr">118 </span> <span class="Constant">"the 'base' operand to compute the _effective address_ to operate on.\n"</span>
<span id="L119" class="LineNr">119 </span> <span class="Constant">" effective address = base + index * scale + displacement (disp8 or disp32)\n"</span>
<span id="L120" class="LineNr">120 </span> <span class="Constant">"\n"</span>
<span id="L121" class="LineNr">121 </span> <span class="Constant">"When scale is 0, use index unmodified.\n"</span>
<span id="L122" class="LineNr">122 </span> <span class="Constant">"When scale is 1, multiply index by 2.\n"</span>
<span id="L123" class="LineNr">123 </span> <span class="Constant">"When scale is 2, multiply index by 4.\n"</span>
<span id="L124" class="LineNr">124 </span> <span class="Constant">"When scale is 3, multiply index by 8.\n"</span>
<span id="L125" class="LineNr">125 </span> <span class="Constant">"\n"</span>
<span id="L126" class="LineNr">126 </span> <span class="Constant">"For complete details, spend some time with the IA-32 software developer's manual,\n"</span>
<span id="L127" class="LineNr">127 </span> <span class="Constant">"volume 2, table 2-3, \"</span><span class="Constant">32</span>-bit addressing with the SIB byte\<span class="Constant">".\n"</span>
<span id="L128" class="LineNr">128 </span> <span class="Constant">"It is included in this repository as 'sib.pdf'.\n"</span>
<span id="L129" class="LineNr">129 </span> <span class="Delimiter">);</span>
<span id="L130" class="LineNr">130 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"disp8"</span><span class="Delimiter">,</span>
<span id="L131" class="LineNr">131 </span> <span class="Constant">"8-bit value to be added in many instructions.\n"</span>
<span id="L132" class="LineNr">132 </span> <span class="Delimiter">);</span>
<span id="L133" class="LineNr">133 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"disp16"</span><span class="Delimiter">,</span>
<span id="L134" class="LineNr">134 </span> <span class="Constant">"16-bit value to be added in many instructions.\n"</span>
<span id="L135" class="LineNr">135 </span> <span class="Delimiter">);</span>
<span id="L136" class="LineNr">136 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">,</span>
<span id="L137" class="LineNr">137 </span> <span class="Constant">"32-bit value to be added in many instructions.\n"</span>
<span id="L138" class="LineNr">138 </span> <span class="Delimiter">);</span>
<span id="L139" class="LineNr">139 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"imm8"</span><span class="Delimiter">,</span>
<span id="L140" class="LineNr">140 </span> <span class="Constant">"8-bit value for many instructions.\n"</span>
<span id="L141" class="LineNr">141 </span> <span class="Delimiter">);</span>
<span id="L142" class="LineNr">142 </span> <a href='001help.cc.html#L252'>put</a><span class="Delimiter">(</span><span class="Special"><a href='001help.cc.html#L53'>Help</a></span><span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">,</span>
<span id="L143" class="LineNr">143 </span> <span class="Constant">"32-bit value for many instructions.\n"</span>
<span id="L144" class="LineNr">144 </span> <span class="Delimiter">);</span>
<span id="L145" class="LineNr">145 </span><span class="Delimiter">}</span>
<span id="L146" class="LineNr">146 </span>
<span id="L147" class="LineNr">147 </span><span class="SalientComment">//:: transform packing operands into bytes in the right order</span>
<span id="L148" class="LineNr">148 </span>
<span id="L149" class="LineNr">149 </span><span class="Delimiter">:(after "Begin Transforms")</span>
<span id="L150" class="LineNr">150 </span><span class="Comment">// Begin Level-2 Transforms</span>
<span id="L151" class="LineNr">151 </span><span class="Special"><a href='011run.cc.html#L229'>Transform</a></span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>pack_operands<span class="Delimiter">);</span>
<span id="L152" class="LineNr">152 </span><span class="Comment">// End Level-2 Transforms</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span><span class="Delimiter">:(code)</span>
<span id="L155" class="LineNr">155 </span><span class="Normal">void</span> pack_operands<span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L156" class="LineNr">156 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L157" class="LineNr">157 </span> segment& <a href='031check_operands.cc.html#L11'>code</a> = p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L158" class="LineNr">158 </span> <span class="Comment">// Pack Operands(segment code)</span>
<span id="L159" class="LineNr">159 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- pack operands"</span> << end<span class="Delimiter">();</span>
<span id="L160" class="LineNr">160 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L161" class="LineNr">161 </span> line& inst = <a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L162" class="LineNr">162 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L163" class="LineNr">163 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"packing instruction '"</span> << to_string<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">with metadata</span><span class="Comment">*/</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span id="L164" class="LineNr">164 </span> pack_operands<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span id="L165" class="LineNr">165 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction after packing: '"</span> << to_string<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">without metadata</span><span class="Comment">*/</span>inst<span class="Delimiter">.</span>words<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span id="L166" class="LineNr">166 </span> <span class="Delimiter">}</span>
<span id="L167" class="LineNr">167 </span><span class="Delimiter">}</span>
<span id="L168" class="LineNr">168 </span>
<span id="L169" class="LineNr">169 </span><span class="Normal">void</span> pack_operands<span class="Delimiter">(</span>line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L170" class="LineNr">170 </span> <a href='011run.cc.html#L117'>line</a> new_inst<span class="Delimiter">;</span>
<span id="L171" class="LineNr">171 </span> <a href='030---operands.cc.html#L179'>add_opcodes</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> new_inst<span class="Delimiter">);</span>
<span id="L172" class="LineNr">172 </span> <a href='030---operands.cc.html#L189'>add_modrm_byte</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> new_inst<span class="Delimiter">);</span>
<span id="L173" class="LineNr">173 </span> <a href='030---operands.cc.html#L215'>add_sib_byte</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> new_inst<span class="Delimiter">);</span>
<span id="L174" class="LineNr">174 </span> <a href='030---operands.cc.html#L237'>add_disp_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> new_inst<span class="Delimiter">);</span>
<span id="L175" class="LineNr">175 </span> <a href='030---operands.cc.html#L249'>add_imm_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">,</span> new_inst<span class="Delimiter">);</span>
<span id="L176" class="LineNr">176 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span>
<span id="L177" class="LineNr">177 </span><span class="Delimiter">}</span>
<span id="L178" class="LineNr">178 </span>
<span id="L179" class="LineNr">179 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L179'>add_opcodes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">,</span> line& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L180" class="LineNr">180 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
<span id="L181" class="LineNr">181 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">"0f"</span> || in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">"f2"</span> || in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">"f3"</span><span class="Delimiter">)</span>
<span id="L182" class="LineNr">182 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">));</span>
<span id="L183" class="LineNr">183 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">"f3"</span> && in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>data == <span class="Constant">"0f"</span><span class="Delimiter">)</span>
<span id="L184" class="LineNr">184 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
<span id="L185" class="LineNr">185 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data == <span class="Constant">"f2"</span> && in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>data == <span class="Constant">"0f"</span><span class="Delimiter">)</span>
<span id="L186" class="LineNr">186 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
<span id="L187" class="LineNr">187 </span><span class="Delimiter">}</span>
<span id="L188" class="LineNr">188 </span>
<span id="L189" class="LineNr">189 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L189'>add_modrm_byte</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">,</span> line& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L190" class="LineNr">190 </span> <span class="Normal">uint8_t</span> mod=<span class="Constant">0</span><span class="Delimiter">,</span> reg_subop=<span class="Constant">0</span><span class="Delimiter">,</span> rm32=<span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L191" class="LineNr">191 </span> <span class="Normal">bool</span> emit =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L192" class="LineNr">192 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L193" class="LineNr">193 </span> <span class="Normal">const</span> word& curr = in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L194" class="LineNr">194 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"mod"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L195" class="LineNr">195 </span> mod = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L196" class="LineNr">196 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L197" class="LineNr">197 </span> <span class="Delimiter">}</span>
<span id="L198" class="LineNr">198 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"rm32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L199" class="LineNr">199 </span> rm32 = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L200" class="LineNr">200 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L201" class="LineNr">201 </span> <span class="Delimiter">}</span>
<span id="L202" class="LineNr">202 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"r32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L203" class="LineNr">203 </span> reg_subop = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L204" class="LineNr">204 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L205" class="LineNr">205 </span> <span class="Delimiter">}</span>
<span id="L206" class="LineNr">206 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"subop"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L207" class="LineNr">207 </span> reg_subop = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L208" class="LineNr">208 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L209" class="LineNr">209 </span> <span class="Delimiter">}</span>
<span id="L210" class="LineNr">210 </span> <span class="Delimiter">}</span>
<span id="L211" class="LineNr">211 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>emit<span class="Delimiter">)</span>
<span id="L212" class="LineNr">212 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='030---operands.cc.html#L279'>hex_byte_text</a><span class="Delimiter">((</span>mod << <span class="Constant">6</span><span class="Delimiter">)</span> | <span class="Delimiter">(</span>reg_subop << <span class="Constant">3</span><span class="Delimiter">)</span> | rm32<span class="Delimiter">));</span>
<span id="L213" class="LineNr">213 </span><span class="Delimiter">}</span>
<span id="L214" class="LineNr">214 </span>
<span id="L215" class="LineNr">215 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L215'>add_sib_byte</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">,</span> line& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L216" class="LineNr">216 </span> <span class="Normal">uint8_t</span> scale=<span class="Constant">0</span><span class="Delimiter">,</span> index=<span class="Constant">0</span><span class="Delimiter">,</span> base=<span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L217" class="LineNr">217 </span> <span class="Normal">bool</span> emit =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L218" class="LineNr">218 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L219" class="LineNr">219 </span> <span class="Normal">const</span> word& curr = in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L220" class="LineNr">220 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"scale"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L221" class="LineNr">221 </span> scale = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L222" class="LineNr">222 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L223" class="LineNr">223 </span> <span class="Delimiter">}</span>
<span id="L224" class="LineNr">224 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"index"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L225" class="LineNr">225 </span> index = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L226" class="LineNr">226 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L227" class="LineNr">227 </span> <span class="Delimiter">}</span>
<span id="L228" class="LineNr">228 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"base"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L229" class="LineNr">229 </span> base = <a href='011run.cc.html#L273'>hex_byte</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L230" class="LineNr">230 </span> emit =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L231" class="LineNr">231 </span> <span class="Delimiter">}</span>
<span id="L232" class="LineNr">232 </span> <span class="Delimiter">}</span>
<span id="L233" class="LineNr">233 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>emit<span class="Delimiter">)</span>
<span id="L234" class="LineNr">234 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='030---operands.cc.html#L279'>hex_byte_text</a><span class="Delimiter">((</span>scale << <span class="Constant">6</span><span class="Delimiter">)</span> | <span class="Delimiter">(</span>index << <span class="Constant">3</span><span class="Delimiter">)</span> | base<span class="Delimiter">));</span>
<span id="L235" class="LineNr">235 </span><span class="Delimiter">}</span>
<span id="L236" class="LineNr">236 </span>
<span id="L237" class="LineNr">237 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L237'>add_disp_bytes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">,</span> line& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L238" class="LineNr">238 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L239" class="LineNr">239 </span> <span class="Normal">const</span> word& curr = in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L240" class="LineNr">240 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp8"</span><span class="Delimiter">))</span>
<span id="L241" class="LineNr">241 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L242" class="LineNr">242 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp16"</span><span class="Delimiter">))</span>
<span id="L243" class="LineNr">243 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L244" class="LineNr">244 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">))</span>
<span id="L245" class="LineNr">245 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L246" class="LineNr">246 </span> <span class="Delimiter">}</span>
<span id="L247" class="LineNr">247 </span><span class="Delimiter">}</span>
<span id="L248" class="LineNr">248 </span>
<span id="L249" class="LineNr">249 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L249'>add_imm_bytes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& in<span class="Delimiter">,</span> line& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L250" class="LineNr">250 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L251" class="LineNr">251 </span> <span class="Normal">const</span> word& curr = in<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L252" class="LineNr">252 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm8"</span><span class="Delimiter">))</span>
<span id="L253" class="LineNr">253 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L254" class="LineNr">254 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span>
<span id="L255" class="LineNr">255 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L256" class="LineNr">256 </span> <span class="Delimiter">}</span>
<span id="L257" class="LineNr">257 </span><span class="Delimiter">}</span>
<span id="L258" class="LineNr">258 </span>
<span id="L259" class="LineNr">259 </span><span class="Normal">void</span> emit_hex_bytes<span class="Delimiter">(</span>line& out<span class="Delimiter">,</span> <span class="Normal">const</span> word& w<span class="Delimiter">,</span> <span class="Normal">int</span> num<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L260" class="LineNr">260 </span> assert<span class="Delimiter">(</span>num <= <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L261" class="LineNr">261 </span> <span class="Normal">bool</span> is_number = <a href='030---operands.cc.html#L439'>looks_like_hex_int</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>data<span class="Delimiter">);</span>
<span id="L262" class="LineNr">262 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>num == <span class="Constant">1</span> || !is_number<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L263" class="LineNr">263 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>w<span class="Delimiter">);</span> <span class="Comment">// preserve existing metadata</span>
<span id="L264" class="LineNr">264 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_number<span class="Delimiter">)</span>
<span id="L265" class="LineNr">265 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>data = <a href='030---operands.cc.html#L286'>hex_byte_to_string</a><span class="Delimiter">(</span><a href='011run.cc.html#L362'>parse_int</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>data<span class="Delimiter">));</span>
<span id="L266" class="LineNr">266 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L267" class="LineNr">267 </span> <span class="Delimiter">}</span>
<span id="L268" class="LineNr">268 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> <span class="Normal">static_cast</span><<span class="Normal">uint32_t</span>><span class="Delimiter">(</span><a href='011run.cc.html#L362'>parse_int</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>data<span class="Delimiter">)),</span> num<span class="Delimiter">);</span>
<span id="L269" class="LineNr">269 </span><span class="Delimiter">}</span>
<span id="L270" class="LineNr">270 </span>
<span id="L271" class="LineNr">271 </span><span class="Normal">void</span> emit_hex_bytes<span class="Delimiter">(</span>line& out<span class="Delimiter">,</span> <span class="Normal">uint32_t</span> val<span class="Delimiter">,</span> <span class="Normal">int</span> num<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L272" class="LineNr">272 </span> assert<span class="Delimiter">(</span>num <= <span class="Constant">4</span><span class="Delimiter">);</span>
<span id="L273" class="LineNr">273 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < num<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L274" class="LineNr">274 </span> out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='030---operands.cc.html#L279'>hex_byte_text</a><span class="Delimiter">(</span>val & <span class="Constant">0xff</span><span class="Delimiter">));</span>
<span id="L275" class="LineNr">275 </span> val = val >> <span class="Constant">8</span><span class="Delimiter">;</span>
<span id="L276" class="LineNr">276 </span> <span class="Delimiter">}</span>
<span id="L277" class="LineNr">277 </span><span class="Delimiter">}</span>
<span id="L278" class="LineNr">278 </span>
<span id="L279" class="LineNr">279 </span><a href='011run.cc.html#L123'>word</a> <a href='030---operands.cc.html#L279'>hex_byte_text</a><span class="Delimiter">(</span><span class="Normal">uint8_t</span> val<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L280" class="LineNr">280 </span> <a href='011run.cc.html#L123'>word</a> result<span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span> result<span class="Delimiter">.</span>data = <a href='030---operands.cc.html#L286'>hex_byte_to_string</a><span class="Delimiter">(</span>val<span class="Delimiter">);</span>
<span id="L282" class="LineNr">282 </span> result<span class="Delimiter">.</span>original = result<span class="Delimiter">.</span>data+<span class="Constant">"/auto"</span><span class="Delimiter">;</span>
<span id="L283" class="LineNr">283 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L284" class="LineNr">284 </span><span class="Delimiter">}</span>
<span id="L285" class="LineNr">285 </span>
<span id="L286" class="LineNr">286 </span>string <a href='030---operands.cc.html#L286'>hex_byte_to_string</a><span class="Delimiter">(</span><span class="Normal">uint8_t</span> val<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L287" class="LineNr">287 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L288" class="LineNr">288 </span> <span class="Comment">// uint8_t prints without padding, but int8_t will expand to 32 bits again</span>
<span id="L289" class="LineNr">289 </span> out << <a href='010---vm.cc.html#L412'>HEXBYTE</a> << <a href='010---vm.cc.html#L415'>NUM</a><span class="Delimiter">(</span>val<span class="Delimiter">);</span>
<span id="L290" class="LineNr">290 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L291" class="LineNr">291 </span><span class="Delimiter">}</span>
<span id="L292" class="LineNr">292 </span>
<span id="L293" class="LineNr">293 </span>string to_string<span class="Delimiter">(</span><span class="Normal">const</span> vector<word>& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L294" class="LineNr">294 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L295" class="LineNr">295 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L296" class="LineNr">296 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L297" class="LineNr">297 </span> out << in<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>data<span class="Delimiter">;</span>
<span id="L298" class="LineNr">298 </span> <span class="Delimiter">}</span>
<span id="L299" class="LineNr">299 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L300" class="LineNr">300 </span><span class="Delimiter">}</span>
<span id="L301" class="LineNr">301 </span>
<span id="L302" class="LineNr">302 </span><span class="Delimiter">:(before "End Unit Tests")</span>
<span id="L303" class="LineNr">303 </span><span class="Normal">void</span> <a href='030---operands.cc.html#L303'>test_preserve_metadata_when_emitting_single_byte</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L304" class="LineNr">304 </span> <a href='011run.cc.html#L123'>word</a> in<span class="Delimiter">;</span>
<span id="L305" class="LineNr">305 </span> in<span class="Delimiter">.</span>data = <span class="Constant">"f0"</span><span class="Delimiter">;</span>
<span id="L306" class="LineNr">306 </span> in<span class="Delimiter">.</span>original = <span class="Constant">"f0/foo"</span><span class="Delimiter">;</span>
<span id="L307" class="LineNr">307 </span> <a href='011run.cc.html#L117'>line</a> out<span class="Delimiter">;</span>
<span id="L308" class="LineNr">308 </span> emit_hex_bytes<span class="Delimiter">(</span>out<span class="Delimiter">,</span> in<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L309" class="LineNr">309 </span> <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span>out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>data<span class="Delimiter">,</span> <span class="Constant">"f0"</span><span class="Delimiter">);</span>
<span id="L310" class="LineNr">310 </span> <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span>out<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original<span class="Delimiter">,</span> <span class="Constant">"f0/foo"</span><span class="Delimiter">);</span>
<span id="L311" class="LineNr">311 </span><span class="Delimiter">}</span>
<span id="L312" class="LineNr">312 </span>
<span id="L313" class="LineNr">313 </span><span class="Delimiter">:(scenario pack_disp8)</span>
<span id="L314" class="LineNr">314 </span>== <span class="Constant">0x1</span>
<span id="L315" class="LineNr">315 </span><span class="Constant">74</span> <span class="Constant">2</span>/disp8 <span class="Comment"># jump 2 bytes away if ZF is set</span>
<span id="L316" class="LineNr">316 </span><span class="traceContains">+transform: packing instruction '74 2/disp8'</span>
<span id="L317" class="LineNr">317 </span><span class="traceContains">+transform: instruction after packing: '74 02'</span>
<span id="L318" class="LineNr">318 </span>
<span id="L319" class="LineNr">319 </span><span class="Delimiter">:(scenarios transform)</span>
<span id="L320" class="LineNr">320 </span><span class="Delimiter">:(scenario pack_disp8_negative)</span>
<span id="L321" class="LineNr">321 </span>== <span class="Constant">0x1</span>
<span id="L322" class="LineNr">322 </span><span class="Comment"># running this will cause an infinite loop</span>
<span id="L323" class="LineNr">323 </span><span class="Constant">74</span> -<span class="Constant">1</span>/disp8 <span class="Comment"># jump 1 byte before if ZF is set</span>
<span id="L324" class="LineNr">324 </span><span class="traceContains">+transform: packing instruction '74 -1/disp8'</span>
<span id="L325" class="LineNr">325 </span><span class="traceContains">+transform: instruction after packing: '74 ff'</span>
<span id="L326" class="LineNr">326 </span><span class="Delimiter">:(scenarios run)</span>
<span id="L327" class="LineNr">327 </span>
<span id="L328" class="LineNr">328 </span><span class="Comment">//: helper for scenario</span>
<span id="L329" class="LineNr">329 </span><span class="Delimiter">:(code)</span>
<span id="L330" class="LineNr">330 </span><span class="Normal">void</span> <a href='011run.cc.html#L231'>transform</a><span class="Delimiter">(</span><span class="Normal">const</span> string& text_bytes<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L331" class="LineNr">331 </span> <a href='011run.cc.html#L99'>program</a> p<span class="Delimiter">;</span>
<span id="L332" class="LineNr">332 </span> istringstream in<span class="Delimiter">(</span>text_bytes<span class="Delimiter">);</span>
<span id="L333" class="LineNr">333 </span> parse<span class="Delimiter">(</span>in<span class="Delimiter">,</span> p<span class="Delimiter">);</span>
<span id="L334" class="LineNr">334 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L204'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L335" class="LineNr">335 </span> <a href='011run.cc.html#L231'>transform</a><span class="Delimiter">(</span>p<span class="Delimiter">);</span>
<span id="L336" class="LineNr">336 </span><span class="Delimiter">}</span>
<span id="L337" class="LineNr">337 </span>
<span id="L338" class="LineNr">338 </span><span class="Delimiter">:(scenario pack_modrm_imm32)</span>
<span id="L339" class="LineNr">339 </span>== <span class="Constant">0x1</span>
<span id="L340" class="LineNr">340 </span><span class="Comment"># instruction effective address operand displacement immediate</span>
<span id="L341" class="LineNr">341 </span><span class="Comment"># op subop mod rm32 base index scale r32</span>
<span id="L342" class="LineNr">342 </span><span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span>
<span id="L343" class="LineNr">343 </span> <span class="Constant">81</span> <span class="Constant">0</span>/add/subop <span class="Constant">3</span>/mod/direct <span class="Constant">3</span>/ebx/rm32 <span class="Constant">1</span>/imm32 <span class="Comment"># add 1 to EBX</span>
<span id="L344" class="LineNr">344 </span><span class="traceContains">+transform: packing instruction '81 0/add/subop 3/mod/direct 3/ebx/rm32 1/imm32'</span>
<span id="L345" class="LineNr">345 </span><span class="traceContains">+transform: instruction after packing: '81 c3 01 00 00 00'</span>
<span id="L346" class="LineNr">346 </span>
<span id="L347" class="LineNr">347 </span><span class="Delimiter">:(scenario pack_imm32_large)</span>
<span id="L348" class="LineNr">348 </span>== <span class="Constant">0x1</span>
<span id="L349" class="LineNr">349 </span>b9 <span class="Constant">0x080490a7</span>/imm32
<span id="L350" class="LineNr">350 </span><span class="traceContains">+transform: packing instruction 'b9 0x080490a7/imm32'</span>
<span id="L351" class="LineNr">351 </span><span class="traceContains">+transform: instruction after packing: 'b9 a7 90 04 08'</span>
<span id="L352" class="LineNr">352 </span>
<span id="L353" class="LineNr">353 </span><span class="Delimiter">:(scenario pack_immediate_constants_hex)</span>
<span id="L354" class="LineNr">354 </span>== <span class="Constant">0x1</span>
<span id="L355" class="LineNr">355 </span>b9 <span class="Constant">0x2a</span>/imm32
<span id="L356" class="LineNr">356 </span><span class="traceContains">+transform: packing instruction 'b9 0x2a/imm32'</span>
<span id="L357" class="LineNr">357 </span><span class="traceContains">+transform: instruction after packing: 'b9 2a 00 00 00'</span>
<span id="L358" class="LineNr">358 </span><span class="traceContains">+run: copy <a href='037heap.cc.html#L23'>imm32</a> 0x0000002a to <a href='010---vm.cc.html#L14'>ECX</a></span>
<span id="L359" class="LineNr">359 </span>
<span id="L360" class="LineNr">360 </span><span class="Delimiter">:(scenarios transform)</span>
<span id="L361" class="LineNr">361 </span><span class="Delimiter">:(scenario pack_silently_ignores_non_hex)</span>
<span id="L362" class="LineNr">362 </span><span class="Special">% Hide_errors = true;</span>
<span id="L363" class="LineNr">363 </span>== <span class="Constant">0x1</span>
<span id="L364" class="LineNr">364 </span>b9 foo/imm32
<span id="L365" class="LineNr">365 </span><span class="traceContains">+transform: packing instruction 'b9 foo/imm32'</span>
<span id="L366" class="LineNr">366 </span><span class="Comment"># no change (we're just not printing metadata to the trace)</span>
<span id="L367" class="LineNr">367 </span><span class="traceContains">+transform: instruction after packing: 'b9 foo'</span>
<span id="L368" class="LineNr">368 </span><span class="Delimiter">:(scenarios run)</span>
<span id="L369" class="LineNr">369 </span>
<span id="L370" class="LineNr">370 </span><span class="Delimiter">:(scenario pack_flags_bad_hex)</span>
<span id="L371" class="LineNr">371 </span><span class="Special">% Hide_errors = true;</span>
<span id="L372" class="LineNr">372 </span>== <span class="Constant">0x1</span>
<span id="L373" class="LineNr">373 </span>b9 0xfoo/imm32
<span id="L374" class="LineNr">374 </span><span class="traceContains">+error: not a number: 0xfoo</span>
<span id="L375" class="LineNr">375 </span>
<span id="L376" class="LineNr">376 </span><span class="SalientComment">//:: helpers</span>
<span id="L377" class="LineNr">377 </span>
<span id="L378" class="LineNr">378 </span><span class="Delimiter">:(code)</span>
<span id="L379" class="LineNr">379 </span><span class="Normal">bool</span> <a href='030---operands.cc.html#L379'>all_hex_bytes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L380" class="LineNr">380 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span id="L381" class="LineNr">381 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_hex_byte<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L382" class="LineNr">382 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L383" class="LineNr">383 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L384" class="LineNr">384 </span><span class="Delimiter">}</span>
<span id="L385" class="LineNr">385 </span>
<span id="L386" class="LineNr">386 </span><span class="Normal">bool</span> <a href='030---operands.cc.html#L386'>is_hex_byte</a><span class="Delimiter">(</span><span class="Normal">const</span> word& curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L387" class="LineNr">387 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L396'>contains_any_operand_metadata</a><span class="Delimiter">(</span>curr<span class="Delimiter">))</span>
<span id="L388" class="LineNr">388 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L389" class="LineNr">389 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span>
<span id="L390" class="LineNr">390 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L391" class="LineNr">391 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789abcdefABCDEF"</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span>
<span id="L392" class="LineNr">392 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L393" class="LineNr">393 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L394" class="LineNr">394 </span><span class="Delimiter">}</span>
<span id="L395" class="LineNr">395 </span>
<span id="L396" class="LineNr">396 </span><span class="Normal">bool</span> <a href='030---operands.cc.html#L396'>contains_any_operand_metadata</a><span class="Delimiter">(</span><span class="Normal">const</span> word& <a href='011run.cc.html#L123'>word</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L397" class="LineNr">397 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Delimiter">.</span>metadata<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span id="L398" class="LineNr">398 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>find<span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Delimiter">.</span>metadata<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> != <span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>end<span class="Delimiter">())</span>
<span id="L399" class="LineNr">399 </span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L400" class="LineNr">400 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L401" class="LineNr">401 </span><span class="Delimiter">}</span>
<span id="L402" class="LineNr">402 </span>
<span id="L403" class="LineNr">403 </span><span class="Normal">bool</span> has_operand_metadata<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">,</span> <span class="Normal">const</span> string& m<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L404" class="LineNr">404 </span> <span class="Normal">bool</span> result =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L405" class="LineNr">405 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L406" class="LineNr">406 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_operand_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> m<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L407" class="LineNr">407 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>result<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L408" class="LineNr">408 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"' has conflicting "</span> << m << <span class="Constant">" operands\n"</span> << end<span class="Delimiter">();</span>
<span id="L409" class="LineNr">409 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L410" class="LineNr">410 </span> <span class="Delimiter">}</span>
<span id="L411" class="LineNr">411 </span> result =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L412" class="LineNr">412 </span> <span class="Delimiter">}</span>
<span id="L413" class="LineNr">413 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L414" class="LineNr">414 </span><span class="Delimiter">}</span>
<span id="L415" class="LineNr">415 </span>
<span id="L416" class="LineNr">416 </span><span class="Normal">bool</span> has_operand_metadata<span class="Delimiter">(</span><span class="Normal">const</span> word& w<span class="Delimiter">,</span> <span class="Normal">const</span> string& m<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L417" class="LineNr">417 </span> <span class="Normal">bool</span> result =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L418" class="LineNr">418 </span> <span class="Normal">bool</span> metadata_found =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L419" class="LineNr">419 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>metadata<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L420" class="LineNr">420 </span> <span class="Normal">const</span> string& curr = w<span class="Delimiter">.</span>metadata<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L421" class="LineNr">421 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>find<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> == <span class="Special"><a href='030---operands.cc.html#L40'>Instruction_operands</a></span><span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// ignore unrecognized metadata</span>
<span id="L422" class="LineNr">422 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>metadata_found<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L423" class="LineNr">423 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"'"</span> << w<span class="Delimiter">.</span>original << <span class="Constant">"' has conflicting operand types; it should have only one\n"</span> << end<span class="Delimiter">();</span>
<span id="L424" class="LineNr">424 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L425" class="LineNr">425 </span> <span class="Delimiter">}</span>
<span id="L426" class="LineNr">426 </span> metadata_found =<span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L427" class="LineNr">427 </span> result = <span class="Delimiter">(</span>curr == m<span class="Delimiter">);</span>
<span id="L428" class="LineNr">428 </span> <span class="Delimiter">}</span>
<span id="L429" class="LineNr">429 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L430" class="LineNr">430 </span><span class="Delimiter">}</span>
<span id="L431" class="LineNr">431 </span>
<span id="L432" class="LineNr">432 </span><a href='011run.cc.html#L123'>word</a> metadata<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">,</span> <span class="Normal">const</span> string& m<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L433" class="LineNr">433 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span id="L434" class="LineNr">434 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_operand_metadata<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> m<span class="Delimiter">))</span>
<span id="L435" class="LineNr">435 </span> <span class="Identifier">return</span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L436" class="LineNr">436 </span> assert<span class="Delimiter">(</span><span class="Constant">false</span><span class="Delimiter">);</span>
<span id="L437" class="LineNr">437 </span><span class="Delimiter">}</span>
<span id="L438" class="LineNr">438 </span>
<span id="L439" class="LineNr">439 </span><span class="Normal">bool</span> <a href='030---operands.cc.html#L439'>looks_like_hex_int</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L440" class="LineNr">440 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L441" class="LineNr">441 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'-'</span> || s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'+'</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span>
<span id="L442" class="LineNr">442 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> <span class="Comment">// includes '0x' prefix</span>
<span id="L443" class="LineNr">443 </span> <span class="Comment">// End looks_like_hex_int(s) Detectors</span>
<span id="L444" class="LineNr">444 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L445" class="LineNr">445 </span><span class="Delimiter">}</span>
<span id="L446" class="LineNr">446 </span>
<span id="L447" class="LineNr">447 </span><span class="Delimiter">:(code)</span>
<span id="L448" class="LineNr">448 </span>string to_string<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L449" class="LineNr">449 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L450" class="LineNr">450 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L166'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L451" class="LineNr">451 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L452" class="LineNr">452 </span> out << inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>original<span class="Delimiter">;</span>
<span id="L453" class="LineNr">453 </span> <span class="Delimiter">}</span>
<span id="L454" class="LineNr">454 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L455" class="LineNr">455 </span><span class="Delimiter">}</span>
</pre>
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