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| author | Kartik Agaram <vc@akkartik.com> | 2020-03-23 20:55:57 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-03-23 20:56:58 -0700 |
| commit | e25b9e0a4d931141bf191340639d7232c235cdaf (patch) | |
| tree | fea8e99e54506daa35b0d63fd9c69788d55407be | |
| parent | 783eb31a0527677e6c684efc835bd13f9355a2f3 (diff) | |
| download | mu-e25b9e0a4d931141bf191340639d7232c235cdaf.tar.gz | |
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| -rw-r--r-- | html/mu_instructions.html | 248 |
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diff --git a/html/mu_instructions.html b/html/mu_instructions.html new file mode 100644 index 00000000..d986552a --- /dev/null +++ b/html/mu_instructions.html @@ -0,0 +1,248 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>~/Attic/Repos/mu/mu_instructions.html</title> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal-light"> +<style type="text/css"> +<!-- +pre { font-family: monospace; color: #000000; background-color: #c6c6c6; } +body { font-family: monospace; color: #000000; background-color: #c6c6c6; } +* { font-size: 1em; } +.Comment { color: #005faf; } +.Constant { color: #008787; } +.Special { color: #ff6060; } +.PreProc { color: #c000c0; } +.SalientComment { color: #0000af; } +--> +</style> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## Mu's instructions and their table-driven translation</span> + +Mu is a statement-oriented language. Blocks consist of flat lists of instructions. +The following chart shows all the instruction forms supported by Mu, along +with the instruction they're translated to. Variables of the form <span class="Constant">"var/reg"</span> +live in a register, and other variables are assumed to live on the stack at +some 'stack-offset' from ebp. + +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> increment => <span class="Constant">"40/increment-eax"</span> +<span class="PreProc">var</span>/<span class="Constant">ecx</span> <span class="Special"><-</span> increment => <span class="Constant">"41/increment-ecx"</span> +<span class="PreProc">var</span>/<span class="Constant">edx</span> <span class="Special"><-</span> increment => <span class="Constant">"42/increment-edx"</span> +<span class="PreProc">var</span>/<span class="Constant">ebx</span> <span class="Special"><-</span> increment => <span class="Constant">"43/increment-ebx"</span> +<span class="PreProc">var</span>/<span class="Constant">esi</span> <span class="Special"><-</span> increment => <span class="Constant">"46/increment-esi"</span> +<span class="PreProc">var</span>/<span class="Constant">edi</span> <span class="Special"><-</span> increment => <span class="Constant">"47/increment-edi"</span> +increment <span class="PreProc">var</span> => <span class="Constant">"ff 0/subop/increment *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">")"</span> +increment *<span class="PreProc">var</span>/reg => <span class="Constant">"ff 0/subop/increment *"</span> reg + +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> decrement => <span class="Constant">"48/decrement-eax"</span> +<span class="PreProc">var</span>/<span class="Constant">ecx</span> <span class="Special"><-</span> decrement => <span class="Constant">"49/decrement-ecx"</span> +<span class="PreProc">var</span>/<span class="Constant">edx</span> <span class="Special"><-</span> decrement => <span class="Constant">"4a/decrement-edx"</span> +<span class="PreProc">var</span>/<span class="Constant">ebx</span> <span class="Special"><-</span> decrement => <span class="Constant">"4b/decrement-ebx"</span> +<span class="PreProc">var</span>/<span class="Constant">esi</span> <span class="Special"><-</span> decrement => <span class="Constant">"4e/decrement-esi"</span> +<span class="PreProc">var</span>/<span class="Constant">edi</span> <span class="Special"><-</span> decrement => <span class="Constant">"4f/decrement-edi"</span> +decrement <span class="PreProc">var</span> => <span class="Constant">"ff 1/subop/decrement *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">")"</span> +decrement *<span class="PreProc">var</span>/reg => <span class="Constant">"ff 1/subop/decrement *"</span> reg + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> add var2/reg2 => <span class="Constant">"01/add-to %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> add var2 => <span class="Constant">"03/add *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> add *var2/reg2 => <span class="Constant">"03/add *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +add-to var1, var2/reg => <span class="Constant">"01/add-to *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> add n => <span class="Constant">"05/add-to-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> add n => <span class="Constant">"81 0/subop/add %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +add-to <span class="PreProc">var</span>, n => <span class="Constant">"81 0/subop/add *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +add-to *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 0/subop/add *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> subtract var2/reg2 => <span class="Constant">"29/subtract-from %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> subtract var2 => <span class="Constant">"2b/subtract *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> subtract *var2/reg2 => <span class="Constant">"2b/subtract *"</span> reg2 <span class="Constant">" "</span> reg1 <span class="Constant">"/r32"</span> +subtract-from var1, var2/reg2 => <span class="Constant">"29/subtract-from *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> subtract n => <span class="Constant">"2d/subtract-from-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> subtract n => <span class="Constant">"81 5/subop/subtract %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +subtract-from <span class="PreProc">var</span>, n => <span class="Constant">"81 5/subop/subtract *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +subtract-from *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 5/subop/subtract *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> and var2/reg2 => <span class="Constant">"21/and-with %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> and var2 => <span class="Constant">"23/and *(ebp+"</span> var2.stack-offset <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> and *var2/reg2 => <span class="Constant">"23/and *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +and-with var1, var2/reg => <span class="Constant">"21/and-with *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> and n => <span class="Constant">"25/and-with-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> and n => <span class="Constant">"81 4/subop/and %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +and-with <span class="PreProc">var</span>, n => <span class="Constant">"81 4/subop/and *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +and-with *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 4/subop/and *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> or var2/reg2 => <span class="Constant">"09/or-with %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> or var2 => <span class="Constant">"0b/or *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> or *var2/reg2 => <span class="Constant">"0b/or *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +or-with var1, var2/reg2 => <span class="Constant">"09/or-with *(ebp+"</span> var1.stack-offset <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> or n => <span class="Constant">"0d/or-with-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> or n => <span class="Constant">"81 1/subop/or %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +or-with <span class="PreProc">var</span>, n => <span class="Constant">"81 1/subop/or *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +or-with *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 1/subop/or *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> xor var2/reg2 => <span class="Constant">"31/xor-with %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> xor var2 => <span class="Constant">"33/xor *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> xor *var2/reg2 => <span class="Constant">"33/xor *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +xor-with var1, var2/reg => <span class="Constant">"31/xor-with *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> xor n => <span class="Constant">"35/xor-with-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> xor n => <span class="Constant">"81 6/subop/xor %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +xor-with <span class="PreProc">var</span>, n => <span class="Constant">"81 6/subop/xor *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +xor-with *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 6/subop/xor *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/<span class="Constant">eax</span> <span class="Special"><-</span> copy n => <span class="Constant">"b8/copy-to-eax "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/<span class="Constant">ecx</span> <span class="Special"><-</span> copy n => <span class="Constant">"b9/copy-to-ecx "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/<span class="Constant">edx</span> <span class="Special"><-</span> copy n => <span class="Constant">"ba/copy-to-edx "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/<span class="Constant">ebx</span> <span class="Special"><-</span> copy n => <span class="Constant">"bb/copy-to-ebx "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/<span class="Constant">esi</span> <span class="Special"><-</span> copy n => <span class="Constant">"be/copy-to-esi "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/<span class="Constant">edi</span> <span class="Special"><-</span> copy n => <span class="Constant">"bf/copy-to-edi "</span> n <span class="Constant">"/imm32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> copy var2/reg2 => <span class="Constant">"89/<- %"</span> reg <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +copy-to var1, var2/reg => <span class="Constant">"89/<- *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> copy var2 => <span class="Constant">"8b/-> *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> copy *var2/reg2 => <span class="Constant">"8b/-> *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> copy n => <span class="Constant">"c7 0/subop/copy %"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +copy-to <span class="PreProc">var</span>, n => <span class="Constant">"c7 0/subop/copy *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +copy-to *<span class="PreProc">var</span>/reg, n => <span class="Constant">"c7 0/subop/copy *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +compare var1, var2/reg2 => <span class="Constant">"39/compare *(ebp+"</span> var1.stack-offset <span class="Constant">") "</span> reg2 <span class="Constant">"/r32"</span> +compare *var1/reg1, var2/reg2 => <span class="Constant">"39/compare *"</span> reg1 <span class="Constant">" "</span> reg2 <span class="Constant">"/r32"</span> +compare var1/reg1, var2 => <span class="Constant">"3b/compare<- *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg1 <span class="Constant">"/r32"</span> +compare <span class="PreProc">var</span>/reg, *var2/reg2 => <span class="Constant">"3b/compare<- *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> +compare <span class="PreProc">var</span>/<span class="Constant">eax</span>, n => <span class="Constant">"3d/compare-eax-with "</span> n <span class="Constant">"/imm32"</span> +compare <span class="PreProc">var</span>, n => <span class="Constant">"81 7/subop/compare *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> n <span class="Constant">"/imm32"</span> +compare *<span class="PreProc">var</span>/reg, n => <span class="Constant">"81 7/subop/compare *"</span> reg <span class="Constant">" "</span> n <span class="Constant">"/imm32"</span> + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> multiply var2 => <span class="Constant">"0f af/multiply *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> multiply *var2/reg2 => <span class="Constant">"0f af/multiply *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> + +<span class="PreProc">break</span> => <span class="Constant">"e9/jump break/disp32"</span> +<span class="PreProc">break</span> label => <span class="Constant">"e9/jump "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop</span> => <span class="Constant">"e9/jump loop/disp32"</span> +<span class="PreProc">loop</span> label => <span class="Constant">"e9/jump "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-=</span> => <span class="Constant">"0f 84/jump-if-= break/disp32"</span> +<span class="PreProc">break-if-=</span> label => <span class="Constant">"0f 84/jump-if-= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-=</span> => <span class="Constant">"0f 84/jump-if-= loop/disp32"</span> +<span class="PreProc">loop-if-=</span> label => <span class="Constant">"0f 84/jump-if-= "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-!=</span> => <span class="Constant">"0f 85/jump-if-!= break/disp32"</span> +<span class="PreProc">break-if-!=</span> label => <span class="Constant">"0f 85/jump-if-!= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-!=</span> => <span class="Constant">"0f 85/jump-if-!= loop/disp32"</span> +<span class="PreProc">loop-if-!=</span> label => <span class="Constant">"0f 85/jump-if-!= "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-<</span> => <span class="Constant">"0f 8c/jump-if-< break/disp32"</span> +<span class="PreProc">break-if-<</span> label => <span class="Constant">"0f 8c/jump-if-< "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-<</span> => <span class="Constant">"0f 8c/jump-if-< loop/disp32"</span> +<span class="PreProc">loop-if-<</span> label => <span class="Constant">"0f 8c/jump-if-< "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-></span> => <span class="Constant">"0f 8f/jump-if-> break/disp32"</span> +<span class="PreProc">break-if-></span> label => <span class="Constant">"0f 8f/jump-if-> "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-></span> => <span class="Constant">"0f 8f/jump-if-> loop/disp32"</span> +<span class="PreProc">loop-if-></span> label => <span class="Constant">"0f 8f/jump-if-> "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-<=</span> => <span class="Constant">"0f 8e/jump-if-<= break/disp32"</span> +<span class="PreProc">break-if-<=</span> label => <span class="Constant">"0f 8e/jump-if-<= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-<=</span> => <span class="Constant">"0f 8e/jump-if-<= loop/disp32"</span> +<span class="PreProc">loop-if-<=</span> label => <span class="Constant">"0f 8e/jump-if-<= "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if->=</span> => <span class="Constant">"0f 8d/jump-if->= break/disp32"</span> +<span class="PreProc">break-if->=</span> label => <span class="Constant">"0f 8d/jump-if->= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if->=</span> => <span class="Constant">"0f 8d/jump-if->= loop/disp32"</span> +<span class="PreProc">loop-if->=</span> label => <span class="Constant">"0f 8d/jump-if->= "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-addr<</span> => <span class="Constant">"0f 82/jump-if-addr< break/disp32"</span> +<span class="PreProc">break-if-addr<</span> label => <span class="Constant">"0f 82/jump-if-addr< "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-addr<</span> => <span class="Constant">"0f 82/jump-if-addr< loop/disp32"</span> +<span class="PreProc">loop-if-addr<</span> label => <span class="Constant">"0f 82/jump-if-addr< "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-addr></span> => <span class="Constant">"0f 87/jump-if-addr> break/disp32"</span> +<span class="PreProc">break-if-addr></span> label => <span class="Constant">"0f 87/jump-if-addr> "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-addr></span> => <span class="Constant">"0f 87/jump-if-addr> loop/disp32"</span> +<span class="PreProc">loop-if-addr></span> label => <span class="Constant">"0f 87/jump-if-addr> "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-addr<=</span> => <span class="Constant">"0f 86/jump-if-addr<= break/disp32"</span> +<span class="PreProc">break-if-addr<=</span> label => <span class="Constant">"0f 86/jump-if-addr<= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-addr<=</span> => <span class="Constant">"0f 86/jump-if-addr<= loop/disp32"</span> +<span class="PreProc">loop-if-addr<=</span> label => <span class="Constant">"0f 86/jump-if-addr<= "</span> label <span class="Constant">":loop/disp32"</span> + +<span class="PreProc">break-if-addr>=</span> => <span class="Constant">"0f 83/jump-if-addr>= break/disp32"</span> +<span class="PreProc">break-if-addr>=</span> label => <span class="Constant">"0f 83/jump-if-addr>= "</span> label <span class="Constant">":break/disp32"</span> +<span class="PreProc">loop-if-addr>=</span> => <span class="Constant">"0f 83/jump-if-addr>= loop/disp32"</span> +<span class="PreProc">loop-if-addr>=</span> label => <span class="Constant">"0f 83/jump-if-addr>= "</span> label <span class="Constant">":loop/disp32"</span> + +In the following instructions types are provided for clarity even if they must +be provided in an earlier '<span class="PreProc">var</span>' declaration. + +Address operations + +<span class="PreProc">var</span>/reg: (addr T) <span class="Special"><-</span> address <span class="PreProc">var</span>: T + => <span class="Constant">"8d/copy-address *(ebp+"</span> <span class="PreProc">var</span>.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + +Array operations (TODO: bounds-checking) + +<span class="PreProc">var</span>/reg <span class="Special"><-</span> length arr/reg2: (addr array T) + => <span class="Constant">"8b/-> *"</span> reg2 <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> index arr/rega: (addr array T), idx/regi: int <span class="Comment"># if size(T) is 4 or 8</span> + => <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> regi <span class="Constant">"<<"</span> log2(size(T)) <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> index arr: (array T sz), idx/regi: int + => <span class="Constant">"8d/copy-address *(ebp+"</span> regi <span class="Constant">"<<"</span> log2(size(T)) <span class="Constant">"+"</span> (arr.stack-offset + <span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> index arr/rega: (addr array T), n + => <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> (n*size(T)+<span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> index arr: (array T sz), n + => <span class="Constant">"8d/copy-address *(ebp+"</span> (arr.stack-offset+<span class="Constant">4</span>+n*size(T)) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + +<span class="PreProc">var</span>/reg: (offset T) <span class="Special"><-</span> compute-offset arr: (addr array T), idx/regi: int <span class="Comment"># arr can be in reg or mem</span> + => <span class="Constant">"69/multiply %"</span> regi <span class="Constant">" "</span> size(T) <span class="Constant">"/imm32 "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg: (offset T) <span class="Special"><-</span> compute-offset arr: (addr array T), idx: int <span class="Comment"># arr can be in reg or mem</span> + => <span class="Constant">"69/multiply *(ebp+"</span> idx.stack-offset <span class="Constant">") "</span> size(T) <span class="Constant">"/imm32 "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg <span class="Special"><-</span> index arr/rega: (addr array T), o/rego: offset + => <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> rego <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span> + +User-defined types + +If a record (product) <span class="PreProc">type</span> T was defined to have elements a, b, c, ... of +types T_a, T_b, T_c, ..., then accessing one of those elements f of <span class="PreProc">type</span> T_f: + +<span class="PreProc">var</span>/reg: (addr T_f) <span class="Special"><-</span> get var2/reg2: (addr F), f + => <span class="Constant">"8d/copy-address *("</span> reg2 <span class="Constant">"+"</span> offset(f) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> +<span class="PreProc">var</span>/reg: (addr T_f) <span class="Special"><-</span> get var2: (addr F), f + => <span class="Constant">"8d/copy-address *(ebp+"</span> var2.stack-offset <span class="Constant">"+"</span> offset(f) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + +Handles for safe access to the heap + +copy-handle-to dest: (handle T), src: (handle T) + => <span class="Constant">"50/push-eax"</span> + <span class="Constant">"8b/-> *(ebp+"</span> src.stack-offset <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"89/<- *(ebp+"</span> dest.stack-offset <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"8b/-> *(ebp+"</span> src.stack-offset+<span class="Constant">4</span> <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"89/<- *(ebp+"</span> dest.stack-offset+<span class="Constant">4</span> <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"58/pop-to-eax"</span> + +copy-handle-to *dest/reg: (addr handle T), src: (handle T) + => <span class="Constant">"50/push-eax"</span> + <span class="Constant">"8b/-> *(ebp+"</span> src.stack-offset <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"89/<- *"</span> reg <span class="Constant">" 0/r32/eax"</span> + <span class="Constant">"8b/-> *(ebp+"</span> src.stack-offset+<span class="Constant">4</span> <span class="Constant">") 0/r32/eax"</span> + <span class="Constant">"89/<- *("</span> reg <span class="Constant">"+4) 0/r32/eax"</span> + <span class="Constant">"58/pop-to-eax"</span> + +out/reg: (addr T) <span class="Special"><-</span> lookup in: (handle T) + => <span class="Comment"># payload_allocid = in->address->allocid</span> + <span class="Constant">"8b/-> *(epb+"</span> (in.stack-offset+<span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + <span class="Constant">"8b/-> *"</span> reg <span class="Constant">" "</span> reg <span class="Constant">"/r32"</span> + <span class="Comment"># if (payload_allocid != handle->allocid) abort</span> + <span class="Constant">"39/compare *(ebp+"</span> in.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + <span class="Constant">"0f 85/jump-if-!= $lookup:abort/disp32"</span> + <span class="Comment"># return payload</span> + <span class="Constant">"8b/-> *(epb+"</span> (in.stack-offset+<span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span> + <span class="Constant">"81 0/subop/add %"</span> reg <span class="Constant">" 4/imm32"</span> <span class="Comment"># skip payload->allocid</span> + +vim:ft=mu:nowrap:textwidth=<span class="Constant">0</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |