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<a href='https://github.com/akkartik/mu/blob/master/apps/mu.subx'>https://github.com/akkartik/mu/blob/master/apps/mu.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># The Mu computer's level-2 language, also called Mu.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># <a href="http://akkartik.name/post/mu-2019-2">http://akkartik.name/post/mu-2019-2</a></span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment">#</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># To run:</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># $ ./ntranslate init.linux 0*.subx apps/mu.subx</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># == Goals</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># 1. Be memory safe. It should be impossible to corrupt the heap, or to create</span>
<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># a bad pointer. (Requires strong type safety.)</span>
<span id="L10" class="LineNr"> 10 </span><span class="subxComment"># 2. Do as little as possible to achieve goal 1.</span>
<span id="L11" class="LineNr"> 11 </span><span class="subxComment"># - runtime checks to avoid complex static analysis</span>
<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># - minimize impedance mismatch between source language and SubX target</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="subxComment"># == Language description</span>
<span id="L15" class="LineNr"> 15 </span><span class="subxComment">#</span>
<span id="L16" class="LineNr"> 16 </span><span class="subxComment"># A program is a sequence of function definitions.</span>
<span id="L17" class="LineNr"> 17 </span><span class="subxComment">#</span>
<span id="L18" class="LineNr"> 18 </span><span class="subxComment"># Function example:</span>
<span id="L19" class="LineNr"> 19 </span><span class="subxComment"># fn foo n: int -> result/eax: int {</span>
<span id="L20" class="LineNr"> 20 </span><span class="subxComment"># ...</span>
<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># }</span>
<span id="L22" class="LineNr"> 22 </span><span class="subxComment">#</span>
<span id="L23" class="LineNr"> 23 </span><span class="subxComment"># Functions consist of a name, optional inputs, optional outputs and a block.</span>
<span id="L24" class="LineNr"> 24 </span><span class="subxComment">#</span>
<span id="L25" class="LineNr"> 25 </span><span class="subxComment"># Function inputs and outputs are variables. All variables have a type and</span>
<span id="L26" class="LineNr"> 26 </span><span class="subxComment"># storage specifier. They can be placed either in memory (on the stack) or in</span>
<span id="L27" class="LineNr"> 27 </span><span class="subxComment"># one of 6 named registers.</span>
<span id="L28" class="LineNr"> 28 </span><span class="subxComment"># eax ecx edx ebx esi edi</span>
<span id="L29" class="LineNr"> 29 </span><span class="subxComment"># Variables in registers must be primitive 32-bit types.</span>
<span id="L30" class="LineNr"> 30 </span><span class="subxComment"># Variables not explicitly placed in a register are on the stack.</span>
<span id="L31" class="LineNr"> 31 </span><span class="subxComment"># Variables in registers need not have a name; in that case you refer to them</span>
<span id="L32" class="LineNr"> 32 </span><span class="subxComment"># directly by the register name.</span>
<span id="L33" class="LineNr"> 33 </span><span class="subxComment">#</span>
<span id="L34" class="LineNr"> 34 </span><span class="subxComment"># Function inputs are always passed in memory (on the stack), while outputs</span>
<span id="L35" class="LineNr"> 35 </span><span class="subxComment"># are always returned in registers.</span>
<span id="L36" class="LineNr"> 36 </span><span class="subxComment">#</span>
<span id="L37" class="LineNr"> 37 </span><span class="subxComment"># Blocks mostly consist of statements.</span>
<span id="L38" class="LineNr"> 38 </span><span class="subxComment">#</span>
<span id="L39" class="LineNr"> 39 </span><span class="subxComment"># Statements mostly consist of a name, optional inputs and optional outputs.</span>
<span id="L40" class="LineNr"> 40 </span><span class="subxComment">#</span>
<span id="L41" class="LineNr"> 41 </span><span class="subxComment"># Statement inputs are variables or literals. Variables need to specify type</span>
<span id="L42" class="LineNr"> 42 </span><span class="subxComment"># (and storage) the first time they're mentioned but not later.</span>
<span id="L43" class="LineNr"> 43 </span><span class="subxComment">#</span>
<span id="L44" class="LineNr"> 44 </span><span class="subxComment"># Statement outputs, like function outputs, must be variables in registers.</span>
<span id="L45" class="LineNr"> 45 </span><span class="subxComment">#</span>
<span id="L46" class="LineNr"> 46 </span><span class="subxComment"># Statement names must be either primitives or user-defined functions.</span>
<span id="L47" class="LineNr"> 47 </span><span class="subxComment">#</span>
<span id="L48" class="LineNr"> 48 </span><span class="subxComment"># Primitives can write to any register.</span>
<span id="L49" class="LineNr"> 49 </span><span class="subxComment"># User-defined functions only write to hard-coded registers. Outputs of each</span>
<span id="L50" class="LineNr"> 50 </span><span class="subxComment"># call must have the same registers as in the function definition.</span>
<span id="L51" class="LineNr"> 51 </span><span class="subxComment">#</span>
<span id="L52" class="LineNr"> 52 </span><span class="subxComment"># There are some other statement types:</span>
<span id="L53" class="LineNr"> 53 </span><span class="subxComment"># - blocks. Multiple statements surrounded by '{...}' and optionally</span>
<span id="L54" class="LineNr"> 54 </span><span class="subxComment"># prefixed with a label name and ':'</span>
<span id="L55" class="LineNr"> 55 </span><span class="subxComment"># - {</span>
<span id="L56" class="LineNr"> 56 </span><span class="subxComment"># ...</span>
<span id="L57" class="LineNr"> 57 </span><span class="subxComment"># }</span>
<span id="L58" class="LineNr"> 58 </span><span class="subxComment"># - foo: {</span>
<span id="L59" class="LineNr"> 59 </span><span class="subxComment"># ...</span>
<span id="L60" class="LineNr"> 60 </span><span class="subxComment"># }</span>
<span id="L61" class="LineNr"> 61 </span><span class="subxComment">#</span>
<span id="L62" class="LineNr"> 62 </span><span class="subxComment"># - variable definitions on the stack. E.g.:</span>
<span id="L63" class="LineNr"> 63 </span><span class="subxComment"># - var foo: int</span>
<span id="L64" class="LineNr"> 64 </span><span class="subxComment"># - var bar: (array int 3)</span>
<span id="L65" class="LineNr"> 65 </span><span class="subxComment"># There's no initializer; variables are automatically initialized.</span>
<span id="L66" class="LineNr"> 66 </span><span class="subxComment">#</span>
<span id="L67" class="LineNr"> 67 </span><span class="subxComment"># - variables definitions in a register. E.g.:</span>
<span id="L68" class="LineNr"> 68 </span><span class="subxComment"># - var foo/eax : int <- add bar 1</span>
<span id="L69" class="LineNr"> 69 </span><span class="subxComment"># The initializer is mandatory and must be a valid instruction that writes</span>
<span id="L70" class="LineNr"> 70 </span><span class="subxComment"># a single output to the right register. In practice registers will</span>
<span id="L71" class="LineNr"> 71 </span><span class="subxComment"># usually be either initialized by primitives or copied from eax.</span>
<span id="L72" class="LineNr"> 72 </span><span class="subxComment"># - var eax : int <- foo bar quux</span>
<span id="L73" class="LineNr"> 73 </span><span class="subxComment"># var floo/ecx : int <- copy eax</span>
<span id="L74" class="LineNr"> 74 </span><span class="subxComment">#</span>
<span id="L75" class="LineNr"> 75 </span><span class="subxComment"># Still todo:</span>
<span id="L76" class="LineNr"> 76 </span><span class="subxComment"># global variables</span>
<span id="L77" class="LineNr"> 77 </span><span class="subxComment"># heap allocations (planned name: 'handle')</span>
<span id="L78" class="LineNr"> 78 </span><span class="subxComment"># user-defined types: 'type' for structs, 'choice' for unions</span>
<span id="L79" class="LineNr"> 79 </span><span class="subxComment"># short-lived 'address' type for efficiently writing inside nested structs</span>
<span id="L80" class="LineNr"> 80 </span>
<span id="L81" class="LineNr"> 81 </span><span class="subxComment"># Now that we know what the language looks like in the large, let's think</span>
<span id="L82" class="LineNr"> 82 </span><span class="subxComment"># about how translation happens from the bottom up. The interplay between</span>
<span id="L83" class="LineNr"> 83 </span><span class="subxComment"># variable scopes and statements using variables is the most complex aspect of</span>
<span id="L84" class="LineNr"> 84 </span><span class="subxComment"># translation.</span>
<span id="L85" class="LineNr"> 85 </span><span class="subxComment">#</span>
<span id="L86" class="LineNr"> 86 </span><span class="subxComment"># Assume that we maintain a 'functions' list while parsing source code. And a</span>
<span id="L87" class="LineNr"> 87 </span><span class="subxComment"># 'primitives' list is a global constant. Both these contain enough information</span>
<span id="L88" class="LineNr"> 88 </span><span class="subxComment"># to perform type-checking on function calls or primitive statements, respectively.</span>
<span id="L89" class="LineNr"> 89 </span><span class="subxComment">#</span>
<span id="L90" class="LineNr"> 90 </span><span class="subxComment"># Defining variables pushes them on a stack with the current block depth and</span>
<span id="L91" class="LineNr"> 91 </span><span class="subxComment"># enough information about their location (stack offset or register id).</span>
<span id="L92" class="LineNr"> 92 </span><span class="subxComment"># Starting a block increments the current block id.</span>
<span id="L93" class="LineNr"> 93 </span><span class="subxComment"># Each statement now has enough information to emit code for it.</span>
<span id="L94" class="LineNr"> 94 </span><span class="subxComment"># Ending a block is where the magic happens:</span>
<span id="L95" class="LineNr"> 95 </span><span class="subxComment"># pop all variables at the current block depth</span>
<span id="L96" class="LineNr"> 96 </span><span class="subxComment"># emit code to restore all register variables introduced at the current depth</span>
<span id="L97" class="LineNr"> 97 </span><span class="subxComment"># emit code to clean up all stack variables at the current depth (just increment esp)</span>
<span id="L98" class="LineNr"> 98 </span><span class="subxComment"># decrement the current block depth</span>
<span id="L99" class="LineNr"> 99 </span><span class="subxComment">#</span>
<span id="L100" class="LineNr"> 100 </span><span class="subxComment"># One additional check we'll need is to ensure that a variable in a register</span>
<span id="L101" class="LineNr"> 101 </span><span class="subxComment"># isn't shadowed by a different one. That may be worth a separate data</span>
<span id="L102" class="LineNr"> 102 </span><span class="subxComment"># structure but for now repeatedly scanning the var stack should suffice.</span>
<span id="L103" class="LineNr"> 103 </span>
<span id="L104" class="LineNr"> 104 </span><span class="subxComment"># == Compiling a single instruction</span>
<span id="L105" class="LineNr"> 105 </span><span class="subxComment"># Determine the function or primitive being called.</span>
<span id="L106" class="LineNr"> 106 </span><span class="subxComment"># If no matches, show all functions/primitives with the same name, along</span>
<span id="L107" class="LineNr"> 107 </span><span class="subxComment"># with reasons they don't match. (type and storage checking)</span>
<span id="L108" class="LineNr"> 108 </span><span class="subxComment"># It must be a function if:</span>
<span id="L109" class="LineNr"> 109 </span><span class="subxComment"># #outputs > 1, or</span>
<span id="L110" class="LineNr"> 110 </span><span class="subxComment"># #inouts > 2, or</span>
<span id="L111" class="LineNr"> 111 </span><span class="subxComment"># #inouts + #outputs > 2</span>
<span id="L112" class="LineNr"> 112 </span><span class="subxComment"># If it's a function, emit:</span>
<span id="L113" class="LineNr"> 113 </span><span class="subxComment"># (low-level-name <rm32 or imm32>...)</span>
<span id="L114" class="LineNr"> 114 </span><span class="subxComment"># Otherwise (it's a primitive):</span>
<span id="L115" class="LineNr"> 115 </span><span class="subxComment"># assert(#inouts <= 2 && #outs <= 1 && (#inouts + #outs) <= 2)</span>
<span id="L116" class="LineNr"> 116 </span><span class="subxComment"># emit opcode</span>
<span id="L117" class="LineNr"> 117 </span><span class="subxComment"># emit-rm32(inout[0])</span>
<span id="L118" class="LineNr"> 118 </span><span class="subxComment"># if out[0] exists: emit-r32(out[0])</span>
<span id="L119" class="LineNr"> 119 </span><span class="subxComment"># else if inout[1] is a literal: emit-imm32(inout[1])</span>
<span id="L120" class="LineNr"> 120 </span><span class="subxComment"># else: emit-rm32(inout[1])</span>
<span id="L121" class="LineNr"> 121 </span>
<span id="L122" class="LineNr"> 122 </span><span class="subxComment"># emit-rm32 and emit-r32 should check that the variable they intend is still</span>
<span id="L123" class="LineNr"> 123 </span><span class="subxComment"># available in the register.</span>
<span id="L124" class="LineNr"> 124 </span>
<span id="L125" class="LineNr"> 125 </span><span class="subxComment"># == Emitting a block</span>
<span id="L126" class="LineNr"> 126 </span><span class="subxComment"># Emit block name if necessary</span>
<span id="L127" class="LineNr"> 127 </span><span class="subxComment"># Emit '{'</span>
<span id="L128" class="LineNr"> 128 </span><span class="subxComment"># When you encounter a statement, emit it as above</span>
<span id="L129" class="LineNr"> 129 </span><span class="subxComment"># When you encounter a variable declaration</span>
<span id="L130" class="LineNr"> 130 </span><span class="subxComment"># emit any code needed for it (bzeros)</span>
<span id="L131" class="LineNr"> 131 </span><span class="subxComment"># push it on the var stack</span>
<span id="L132" class="LineNr"> 132 </span><span class="subxComment"># update register dict if necessary</span>
<span id="L133" class="LineNr"> 133 </span><span class="subxComment"># When you encounter '}'</span>
<span id="L134" class="LineNr"> 134 </span><span class="subxComment"># While popping variables off the var stack until block id changes</span>
<span id="L135" class="LineNr"> 135 </span><span class="subxComment"># Emit code needed to clean up the stack</span>
<span id="L136" class="LineNr"> 136 </span><span class="subxComment"># either increment esp</span>
<span id="L137" class="LineNr"> 137 </span><span class="subxComment"># or pop into appropriate register</span>
<span id="L138" class="LineNr"> 138 </span><span class="subxComment"># TODO: how to update the register dict? does it need to be a stack as well?</span>
<span id="L139" class="LineNr"> 139 </span>
<span id="L140" class="LineNr"> 140 </span><span class="subxComment"># The rest is straightforward.</span>
<span id="L141" class="LineNr"> 141 </span>
<span id="L142" class="LineNr"> 142 </span><span class="subxComment"># A sketch of planned data structures. Still highly speculative.</span>
<span id="L143" class="LineNr"> 143 </span>== data
<span id="L144" class="LineNr"> 144 </span>
<span id="L145" class="LineNr"> 145 </span><span class="subxComment"># A program is currently a linked list of functions</span>
<span id="L146" class="LineNr"> 146 </span><span class="SpecialChar">Program</span>: <span class="subxComment"># (address function)</span>
<span id="L147" class="LineNr"> 147 </span> 0/imm32
<span id="L148" class="LineNr"> 148 </span>
<span id="L149" class="LineNr"> 149 </span><span class="subxComment"># A function consists of:</span>
<span id="L150" class="LineNr"> 150 </span><span class="subxComment"># name: (address string)</span>
<span id="L151" class="LineNr"> 151 </span><span class="subxComment"># inputs: (address var-type) # tbd</span>
<span id="L152" class="LineNr"> 152 </span><span class="subxComment"># outputs: (address var-type) # tbd</span>
<span id="L153" class="LineNr"> 153 </span><span class="subxComment"># body: (address block)</span>
<span id="L154" class="LineNr"> 154 </span><span class="subxComment"># next: (address function)</span>
<span id="L155" class="LineNr"> 155 </span><span class="SpecialChar">Function-next</span>:
<span id="L156" class="LineNr"> 156 </span> 0x10/imm32
<span id="L157" class="LineNr"> 157 </span><span class="SpecialChar">Function-size</span>:
<span id="L158" class="LineNr"> 158 </span> 0x14/imm32/20
<span id="L159" class="LineNr"> 159 </span>
<span id="L160" class="LineNr"> 160 </span><span class="subxComment"># A block is a list of statements:</span>
<span id="L161" class="LineNr"> 161 </span><span class="subxComment"># statements: (address statement)</span>
<span id="L162" class="LineNr"> 162 </span>
<span id="L163" class="LineNr"> 163 </span><span class="subxComment"># A statement can be either a regular statement consisting of:</span>
<span id="L164" class="LineNr"> 164 </span><span class="subxComment"># name: (address string)</span>
<span id="L165" class="LineNr"> 165 </span><span class="subxComment"># inputs: (address var)</span>
<span id="L166" class="LineNr"> 166 </span><span class="subxComment"># outputs: (address var-r)</span>
<span id="L167" class="LineNr"> 167 </span><span class="subxComment"># or a variable declaration on the stack:</span>
<span id="L168" class="LineNr"> 168 </span><span class="subxComment"># name: (address string)</span>
<span id="L169" class="LineNr"> 169 </span><span class="subxComment"># type: (address type-sexpr)</span>
<span id="L170" class="LineNr"> 170 </span><span class="subxComment"># or a regular statement writing to a single new variable in a register:</span>
<span id="L171" class="LineNr"> 171 </span><span class="subxComment"># name: (address string)</span>
<span id="L172" class="LineNr"> 172 </span><span class="subxComment"># inputs: (address var)</span>
<span id="L173" class="LineNr"> 173 </span><span class="subxComment"># output: var-r</span>
<span id="L174" class="LineNr"> 174 </span><span class="subxComment"># or a block of statements:</span>
<span id="L175" class="LineNr"> 175 </span><span class="subxComment"># statements: (address statement)</span>
<span id="L176" class="LineNr"> 176 </span>
<span id="L177" class="LineNr"> 177 </span><span class="subxComment"># Kinds of local variable declarations:</span>
<span id="L178" class="LineNr"> 178 </span><span class="subxComment"># var f : (array foo 10)</span>
<span id="L179" class="LineNr"> 179 </span><span class="subxComment"># var f/ecx : int <- copy 0</span>
<span id="L180" class="LineNr"> 180 </span><span class="subxComment"># Variables live in either the stack or a register.</span>
<span id="L181" class="LineNr"> 181 </span><span class="subxComment"># Variables in the stack are auto-initialized.</span>
<span id="L182" class="LineNr"> 182 </span><span class="subxComment"># (This is non-trivial for arrays, and arrays inside structs... We'll see.)</span>
<span id="L183" class="LineNr"> 183 </span><span class="subxComment"># Variables in register need a real instruction.</span>
<span id="L184" class="LineNr"> 184 </span>
<span id="L185" class="LineNr"> 185 </span><span class="subxComment"># var is a variable declaration. e.g. `foo: (array int 3)`</span>
<span id="L186" class="LineNr"> 186 </span><span class="subxComment"># name: (address string)</span>
<span id="L187" class="LineNr"> 187 </span><span class="subxComment"># type: (address type-sexpr)</span>
<span id="L188" class="LineNr"> 188 </span>
<span id="L189" class="LineNr"> 189 </span><span class="subxComment"># var-r is a variable declaration in a register. e.g. `foo/eax: (array int 3)`</span>
<span id="L190" class="LineNr"> 190 </span><span class="subxComment"># name: (address string)</span>
<span id="L191" class="LineNr"> 191 </span><span class="subxComment"># type: (address type-sexpr)</span>
<span id="L192" class="LineNr"> 192 </span><span class="subxComment"># reg: int [0..7]</span>
<span id="L193" class="LineNr"> 193 </span>
<span id="L194" class="LineNr"> 194 </span><span class="subxComment"># type-sexpr is a tree of type identifiers. e.g. (array (address int) 3)</span>
<span id="L195" class="LineNr"> 195 </span><span class="subxComment"># either</span>
<span id="L196" class="LineNr"> 196 </span><span class="subxComment"># id: type-identifier</span>
<span id="L197" class="LineNr"> 197 </span><span class="subxComment"># or</span>
<span id="L198" class="LineNr"> 198 </span><span class="subxComment"># car: (address type-sexpr)</span>
<span id="L199" class="LineNr"> 199 </span><span class="subxComment"># cdr: (address type-sexpr)</span>
<span id="L200" class="LineNr"> 200 </span>
<span id="L201" class="LineNr"> 201 </span>== code
<span id="L202" class="LineNr"> 202 </span>
<span id="L203" class="LineNr"> 203 </span><span class="SpecialChar">Entry</span>:
<span id="L204" class="LineNr"> 204 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L205" class="LineNr"> 205 </span> 89/<- %ebp 4/r32/esp
<span id="L206" class="LineNr"> 206 </span> (<a href='../053new-segment.subx.html#L41'>new-segment</a> <span class="SpecialChar"><a href='../069allocate.subx.html#L29'>Heap-size</a></span> <span class="SpecialChar"><a href='../069allocate.subx.html#L22'>Heap</a></span>)
<span id="L207" class="LineNr"> 207 </span> <span class="subxComment"># if (argv[1] == "test') run-tests()</span>
<span id="L208" class="LineNr"> 208 </span> {
<span id="L209" class="LineNr"> 209 </span> <span class="subxComment"># if (argc <= 1) break</span>
<span id="L210" class="LineNr"> 210 </span> 81 7/subop/compare *ebp 1/imm32
<span id="L211" class="LineNr"> 211 </span> 7e/jump-if-lesser-or-equal <span class="Constant">break</span>/disp8
<span id="L212" class="LineNr"> 212 </span> <span class="subxComment"># if (argv[1] != "test") break</span>
<span id="L213" class="LineNr"> 213 </span> (<a href='../052kernel-string-equal.subx.html#L31'>kernel-string-equal?</a> *(ebp+8) <span class="Constant">"test"</span>) <span class="subxComment"># => eax</span>
<span id="L214" class="LineNr"> 214 </span> 3d/compare-eax-and 0/imm32
<span id="L215" class="LineNr"> 215 </span> 74/jump-if-equal <span class="Constant">break</span>/disp8
<span id="L216" class="LineNr"> 216 </span> <span class="subxComment">#</span>
<span id="L217" class="LineNr"> 217 </span> (run-tests)
<span id="L218" class="LineNr"> 218 </span> <span class="subxComment"># syscall(exit, *Num-test-failures)</span>
<span id="L219" class="LineNr"> 219 </span> 8b/-> *<span class="SpecialChar"><a href='../051test.subx.html#L90'>Num-test-failures</a></span> 3/r32/ebx
<span id="L220" class="LineNr"> 220 </span> eb/jump $mu-main:end/disp8
<span id="L221" class="LineNr"> 221 </span> }
<span id="L222" class="LineNr"> 222 </span> <span class="subxComment"># otherwise convert Stdin</span>
<span id="L223" class="LineNr"> 223 </span> (<a href='mu.subx.html#L231'>convert-mu</a> <span class="SpecialChar"><a href='../061read-byte.subx.html#L14'>Stdin</a></span> <span class="SpecialChar"><a href='../064write-byte.subx.html#L10'>Stdout</a></span>)
<span id="L224" class="LineNr"> 224 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='../064write-byte.subx.html#L10'>Stdout</a></span>)
<span id="L225" class="LineNr"> 225 </span> <span class="subxComment"># syscall(exit, 0)</span>
<span id="L226" class="LineNr"> 226 </span> bb/copy-to-ebx 0/imm32
<span id="L227" class="LineNr"> 227 </span><span class="Constant">$mu-main:end</span>:
<span id="L228" class="LineNr"> 228 </span> b8/copy-to-eax 1/imm32/exit
<span id="L229" class="LineNr"> 229 </span> cd/syscall 0x80/imm8
<span id="L230" class="LineNr"> 230 </span>
<span id="L231" class="LineNr"> 231 </span><span class="subxFunction">convert-mu</span>: <span class="subxComment"># in : (address buffered-file), out : (address buffered-file)</span>
<span id="L232" class="LineNr"> 232 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L233" class="LineNr"> 233 </span> 55/push-ebp
<span id="L234" class="LineNr"> 234 </span> 89/<- %ebp 4/r32/esp
<span id="L235" class="LineNr"> 235 </span> <span class="subxComment">#</span>
<span id="L236" class="LineNr"> 236 </span> (<a href='mu.subx.html#L431'>parse-mu</a> *(ebp+8))
<span id="L237" class="LineNr"> 237 </span> (<a href='mu.subx.html#L732'>check-mu-types</a>)
<span id="L238" class="LineNr"> 238 </span> (<a href='mu.subx.html#L743'>emit-subx</a> *(ebp+0xc))
<span id="L239" class="LineNr"> 239 </span><span class="Constant">$convert-mu:end</span>:
<span id="L240" class="LineNr"> 240 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L241" class="LineNr"> 241 </span> 89/<- %esp 5/r32/ebp
<span id="L242" class="LineNr"> 242 </span> 5d/pop-to-ebp
<span id="L243" class="LineNr"> 243 </span> c3/return
<span id="L244" class="LineNr"> 244 </span>
<span id="L245" class="LineNr"> 245 </span><span class="subxTest">test-convert-empty-input</span>:
<span id="L246" class="LineNr"> 246 </span> <span class="subxComment"># empty input => empty output</span>
<span id="L247" class="LineNr"> 247 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L248" class="LineNr"> 248 </span> 55/push-ebp
<span id="L249" class="LineNr"> 249 </span> 89/<- %ebp 4/r32/esp
<span id="L250" class="LineNr"> 250 </span> <span class="subxComment"># setup</span>
<span id="L251" class="LineNr"> 251 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a>)
<span id="L252" class="LineNr"> 252 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L317'>_test-input-buffered-file->buffer</a>)
<span id="L253" class="LineNr"> 253 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L254" class="LineNr"> 254 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L255" class="LineNr"> 255 </span> <span class="subxComment">#</span>
<span id="L256" class="LineNr"> 256 </span> (<a href='mu.subx.html#L231'>convert-mu</a> <a href='../061read-byte.subx.html#L314'>_test-input-buffered-file</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L257" class="LineNr"> 257 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L258" class="LineNr"> 258 </span> (<a href='../058stream-equal.subx.html#L193'>check-stream-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">""</span> <span class="Constant">"F - test-convert-empty-input"</span>)
<span id="L259" class="LineNr"> 259 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L260" class="LineNr"> 260 </span> 89/<- %esp 5/r32/ebp
<span id="L261" class="LineNr"> 261 </span> 5d/pop-to-ebp
<span id="L262" class="LineNr"> 262 </span> c3/return
<span id="L263" class="LineNr"> 263 </span>
<span id="L264" class="LineNr"> 264 </span><span class="subxTest">test-convert-function-skeleton</span>:
<span id="L265" class="LineNr"> 265 </span> <span class="subxComment"># empty function decl => function prologue and epilogue</span>
<span id="L266" class="LineNr"> 266 </span> <span class="subxComment"># fn foo {</span>
<span id="L267" class="LineNr"> 267 </span> <span class="subxComment"># }</span>
<span id="L268" class="LineNr"> 268 </span> <span class="subxComment"># =></span>
<span id="L269" class="LineNr"> 269 </span> <span class="subxComment"># foo:</span>
<span id="L270" class="LineNr"> 270 </span> <span class="subxComment"># # . prologue</span>
<span id="L271" class="LineNr"> 271 </span> <span class="subxComment"># 55/push-ebp</span>
<span id="L272" class="LineNr"> 272 </span> <span class="subxComment"># 89/<- %ebp 4/r32/esp</span>
<span id="L273" class="LineNr"> 273 </span> <span class="subxComment"># # . epilogue</span>
<span id="L274" class="LineNr"> 274 </span> <span class="subxComment"># 89/<- %esp 5/r32/ebp</span>
<span id="L275" class="LineNr"> 275 </span> <span class="subxComment"># 5d/pop-to-ebp</span>
<span id="L276" class="LineNr"> 276 </span> <span class="subxComment"># c3/return</span>
<span id="L277" class="LineNr"> 277 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L278" class="LineNr"> 278 </span> 55/push-ebp
<span id="L279" class="LineNr"> 279 </span> 89/<- %ebp 4/r32/esp
<span id="L280" class="LineNr"> 280 </span> <span class="subxComment"># setup</span>
<span id="L281" class="LineNr"> 281 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a>)
<span id="L282" class="LineNr"> 282 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L317'>_test-input-buffered-file->buffer</a>)
<span id="L283" class="LineNr"> 283 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L284" class="LineNr"> 284 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L285" class="LineNr"> 285 </span> <span class="subxComment">#</span>
<span id="L286" class="LineNr"> 286 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"fn foo {\n"</span>)
<span id="L287" class="LineNr"> 287 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"}\n"</span>)
<span id="L288" class="LineNr"> 288 </span> <span class="subxComment"># convert</span>
<span id="L289" class="LineNr"> 289 </span> (<a href='mu.subx.html#L231'>convert-mu</a> <a href='../061read-byte.subx.html#L314'>_test-input-buffered-file</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L290" class="LineNr"> 290 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L291" class="Folded"> 291 </span><span class="Folded">+-- 6 lines: #? # dump _test-output-stream --------------------------------------------------------------------------------------------------------------</span>
<span id="L297" class="LineNr"> 297 </span> <span class="subxComment"># check output</span>
<span id="L298" class="LineNr"> 298 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"foo:"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/0"</span>)
<span id="L299" class="LineNr"> 299 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . prologue"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/1"</span>)
<span id="L300" class="LineNr"> 300 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"55/push-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/2"</span>)
<span id="L301" class="LineNr"> 301 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %ebp 4/r32/esp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/3"</span>)
<span id="L302" class="LineNr"> 302 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . epilogue"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/4"</span>)
<span id="L303" class="LineNr"> 303 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %esp 5/r32/ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/5"</span>)
<span id="L304" class="LineNr"> 304 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"5d/pop-to-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/6"</span>)
<span id="L305" class="LineNr"> 305 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"c3/return"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/7"</span>)
<span id="L306" class="LineNr"> 306 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L307" class="LineNr"> 307 </span> 89/<- %esp 5/r32/ebp
<span id="L308" class="LineNr"> 308 </span> 5d/pop-to-ebp
<span id="L309" class="LineNr"> 309 </span> c3/return
<span id="L310" class="LineNr"> 310 </span>
<span id="L311" class="LineNr"> 311 </span><span class="subxTest">test-convert-multiple-function-skeletons</span>:
<span id="L312" class="LineNr"> 312 </span> <span class="subxComment"># multiple functions correctly organized into a linked list</span>
<span id="L313" class="LineNr"> 313 </span> <span class="subxComment"># fn foo {</span>
<span id="L314" class="LineNr"> 314 </span> <span class="subxComment"># }</span>
<span id="L315" class="LineNr"> 315 </span> <span class="subxComment"># fn bar {</span>
<span id="L316" class="LineNr"> 316 </span> <span class="subxComment"># }</span>
<span id="L317" class="LineNr"> 317 </span> <span class="subxComment"># =></span>
<span id="L318" class="LineNr"> 318 </span> <span class="subxComment"># foo:</span>
<span id="L319" class="LineNr"> 319 </span> <span class="subxComment"># # . prologue</span>
<span id="L320" class="LineNr"> 320 </span> <span class="subxComment"># 55/push-ebp</span>
<span id="L321" class="LineNr"> 321 </span> <span class="subxComment"># 89/<- %ebp 4/r32/esp</span>
<span id="L322" class="LineNr"> 322 </span> <span class="subxComment"># # . epilogue</span>
<span id="L323" class="LineNr"> 323 </span> <span class="subxComment"># 89/<- %esp 5/r32/ebp</span>
<span id="L324" class="LineNr"> 324 </span> <span class="subxComment"># 5d/pop-to-ebp</span>
<span id="L325" class="LineNr"> 325 </span> <span class="subxComment"># c3/return</span>
<span id="L326" class="LineNr"> 326 </span> <span class="subxComment"># bar:</span>
<span id="L327" class="LineNr"> 327 </span> <span class="subxComment"># # . prologue</span>
<span id="L328" class="LineNr"> 328 </span> <span class="subxComment"># 55/push-ebp</span>
<span id="L329" class="LineNr"> 329 </span> <span class="subxComment"># 89/<- %ebp 4/r32/esp</span>
<span id="L330" class="LineNr"> 330 </span> <span class="subxComment"># # . epilogue</span>
<span id="L331" class="LineNr"> 331 </span> <span class="subxComment"># 89/<- %esp 5/r32/ebp</span>
<span id="L332" class="LineNr"> 332 </span> <span class="subxComment"># 5d/pop-to-ebp</span>
<span id="L333" class="LineNr"> 333 </span> <span class="subxComment"># c3/return</span>
<span id="L334" class="LineNr"> 334 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L335" class="LineNr"> 335 </span> 55/push-ebp
<span id="L336" class="LineNr"> 336 </span> 89/<- %ebp 4/r32/esp
<span id="L337" class="LineNr"> 337 </span> <span class="subxComment"># setup</span>
<span id="L338" class="LineNr"> 338 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a>)
<span id="L339" class="LineNr"> 339 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L317'>_test-input-buffered-file->buffer</a>)
<span id="L340" class="LineNr"> 340 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L341" class="LineNr"> 341 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L342" class="LineNr"> 342 </span> <span class="subxComment">#</span>
<span id="L343" class="LineNr"> 343 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"fn foo {\n"</span>)
<span id="L344" class="LineNr"> 344 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"}\n"</span>)
<span id="L345" class="LineNr"> 345 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"fn bar {\n"</span>)
<span id="L346" class="LineNr"> 346 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"}\n"</span>)
<span id="L347" class="LineNr"> 347 </span> <span class="subxComment"># convert</span>
<span id="L348" class="LineNr"> 348 </span> (<a href='mu.subx.html#L231'>convert-mu</a> <a href='../061read-byte.subx.html#L314'>_test-input-buffered-file</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L349" class="LineNr"> 349 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L350" class="Folded"> 350 </span><span class="Folded">+-- 6 lines: #? # dump _test-output-stream --------------------------------------------------------------------------------------------------------------</span>
<span id="L356" class="LineNr"> 356 </span> <span class="subxComment"># check first function</span>
<span id="L357" class="LineNr"> 357 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"foo:"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/0"</span>)
<span id="L358" class="LineNr"> 358 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . prologue"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/1"</span>)
<span id="L359" class="LineNr"> 359 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"55/push-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/2"</span>)
<span id="L360" class="LineNr"> 360 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %ebp 4/r32/esp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/3"</span>)
<span id="L361" class="LineNr"> 361 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . epilogue"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/4"</span>)
<span id="L362" class="LineNr"> 362 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %esp 5/r32/ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/5"</span>)
<span id="L363" class="LineNr"> 363 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"5d/pop-to-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/6"</span>)
<span id="L364" class="LineNr"> 364 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"c3/return"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/7"</span>)
<span id="L365" class="LineNr"> 365 </span> <span class="subxComment"># check second function</span>
<span id="L366" class="LineNr"> 366 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"bar:"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/10"</span>)
<span id="L367" class="LineNr"> 367 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . prologue"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/11"</span>)
<span id="L368" class="LineNr"> 368 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"55/push-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/12"</span>)
<span id="L369" class="LineNr"> 369 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %ebp 4/r32/esp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/13"</span>)
<span id="L370" class="LineNr"> 370 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . epilogue"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/14"</span>)
<span id="L371" class="LineNr"> 371 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %esp 5/r32/ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/15"</span>)
<span id="L372" class="LineNr"> 372 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"5d/pop-to-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/16"</span>)
<span id="L373" class="LineNr"> 373 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"c3/return"</span> <span class="Constant">"F - <a href='mu.subx.html#L311'>test-convert-multiple-function-skeletons</a>/17"</span>)
<span id="L374" class="LineNr"> 374 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L375" class="LineNr"> 375 </span> 89/<- %esp 5/r32/ebp
<span id="L376" class="LineNr"> 376 </span> 5d/pop-to-ebp
<span id="L377" class="LineNr"> 377 </span> c3/return
<span id="L378" class="LineNr"> 378 </span>
<span id="L379" class="LineNr"> 379 </span><span class="subxTest">test-convert-function-with-arg</span>:
<span id="L380" class="LineNr"> 380 </span> <span class="subxComment"># function with one arg and a copy instruction</span>
<span id="L381" class="LineNr"> 381 </span> <span class="subxComment"># fn foo n : int -> result/eax : int {</span>
<span id="L382" class="LineNr"> 382 </span> <span class="subxComment"># result <- copy n</span>
<span id="L383" class="LineNr"> 383 </span> <span class="subxComment"># }</span>
<span id="L384" class="LineNr"> 384 </span> <span class="subxComment"># =></span>
<span id="L385" class="LineNr"> 385 </span> <span class="subxComment"># foo:</span>
<span id="L386" class="LineNr"> 386 </span> <span class="subxComment"># # . prologue</span>
<span id="L387" class="LineNr"> 387 </span> <span class="subxComment"># 55/push-ebp</span>
<span id="L388" class="LineNr"> 388 </span> <span class="subxComment"># 89/<- %ebp 4/r32/esp</span>
<span id="L389" class="LineNr"> 389 </span> <span class="subxComment"># {</span>
<span id="L390" class="LineNr"> 390 </span> <span class="subxComment"># # result <- copy n</span>
<span id="L391" class="LineNr"> 391 </span> <span class="subxComment"># 8b/-> *(ebp+8) 0/r32/eax</span>
<span id="L392" class="LineNr"> 392 </span> <span class="subxComment"># }</span>
<span id="L393" class="LineNr"> 393 </span> <span class="subxComment"># # . epilogue</span>
<span id="L394" class="LineNr"> 394 </span> <span class="subxComment"># 89/<- %esp 5/r32/ebp</span>
<span id="L395" class="LineNr"> 395 </span> <span class="subxComment"># 5d/pop-to-ebp</span>
<span id="L396" class="LineNr"> 396 </span> <span class="subxComment"># c3/return</span>
<span id="L397" class="LineNr"> 397 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L398" class="LineNr"> 398 </span> 55/push-ebp
<span id="L399" class="LineNr"> 399 </span> 89/<- %ebp 4/r32/esp
<span id="L400" class="LineNr"> 400 </span> <span class="subxComment"># setup</span>
<span id="L401" class="LineNr"> 401 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a>)
<span id="L402" class="LineNr"> 402 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../061read-byte.subx.html#L317'>_test-input-buffered-file->buffer</a>)
<span id="L403" class="LineNr"> 403 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L404" class="LineNr"> 404 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L405" class="LineNr"> 405 </span> <span class="subxComment">#</span>
<span id="L406" class="LineNr"> 406 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"fn foo {\n"</span>)
<span id="L407" class="LineNr"> 407 </span> (<a href='../057write.subx.html#L24'>write</a> <a href='../061read-byte.subx.html#L288'>_test-input-stream</a> <span class="Constant">"}\n"</span>)
<span id="L408" class="LineNr"> 408 </span> <span class="subxComment"># convert</span>
<span id="L409" class="LineNr"> 409 </span> (<a href='mu.subx.html#L231'>convert-mu</a> <a href='../061read-byte.subx.html#L314'>_test-input-buffered-file</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L410" class="LineNr"> 410 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L411" class="Folded"> 411 </span><span class="Folded">+-- 6 lines: #? # dump _test-output-stream --------------------------------------------------------------------------------------------------------------</span>
<span id="L417" class="LineNr"> 417 </span> <span class="subxComment"># check output</span>
<span id="L418" class="LineNr"> 418 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"foo:"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/0"</span>)
<span id="L419" class="LineNr"> 419 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . prologue"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/1"</span>)
<span id="L420" class="LineNr"> 420 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"55/push-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/2"</span>)
<span id="L421" class="LineNr"> 421 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %ebp 4/r32/esp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/3"</span>)
<span id="L422" class="LineNr"> 422 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"# . epilogue"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/4"</span>)
<span id="L423" class="LineNr"> 423 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"89/<- %esp 5/r32/ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/5"</span>)
<span id="L424" class="LineNr"> 424 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"5d/pop-to-ebp"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/6"</span>)
<span id="L425" class="LineNr"> 425 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"c3/return"</span> <span class="Constant">"F - <a href='mu.subx.html#L264'>test-convert-function-skeleton</a>/7"</span>)
<span id="L426" class="LineNr"> 426 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L427" class="LineNr"> 427 </span> 89/<- %esp 5/r32/ebp
<span id="L428" class="LineNr"> 428 </span> 5d/pop-to-ebp
<span id="L429" class="LineNr"> 429 </span> c3/return
<span id="L430" class="LineNr"> 430 </span>
<span id="L431" class="LineNr"> 431 </span><span class="subxFunction">parse-mu</span>: <span class="subxComment"># in : (address buffered-file)</span>
<span id="L432" class="LineNr"> 432 </span> <span class="subxComment"># pseudocode</span>
<span id="L433" class="LineNr"> 433 </span> <span class="subxComment"># var curr-function = Program</span>
<span id="L434" class="LineNr"> 434 </span> <span class="subxComment"># var line : (stream byte 512)</span>
<span id="L435" class="LineNr"> 435 </span> <span class="subxComment"># var word-slice : slice</span>
<span id="L436" class="LineNr"> 436 </span> <span class="subxComment"># while true # line loop</span>
<span id="L437" class="LineNr"> 437 </span> <span class="subxComment"># clear-stream(line)</span>
<span id="L438" class="LineNr"> 438 </span> <span class="subxComment"># read-line-buffered(in, line)</span>
<span id="L439" class="LineNr"> 439 </span> <span class="subxComment"># if (line->write == 0) break # end of file</span>
<span id="L440" class="LineNr"> 440 </span> <span class="subxComment"># while true # word loop</span>
<span id="L441" class="LineNr"> 441 </span> <span class="subxComment"># word-slice = next-word-or-string(line)</span>
<span id="L442" class="LineNr"> 442 </span> <span class="subxComment"># if slice-empty?(word-slice) # end of line</span>
<span id="L443" class="LineNr"> 443 </span> <span class="subxComment"># break</span>
<span id="L444" class="LineNr"> 444 </span> <span class="subxComment"># else if slice-starts-with?(word-slice, "#") # comment</span>
<span id="L445" class="LineNr"> 445 </span> <span class="subxComment"># break # end of line</span>
<span id="L446" class="LineNr"> 446 </span> <span class="subxComment"># else if slice-equal(word-slice, "fn")</span>
<span id="L447" class="LineNr"> 447 </span> <span class="subxComment"># var new-function : (address function) = new function</span>
<span id="L448" class="LineNr"> 448 </span> <span class="subxComment"># populate-mu-function(in, new-function)</span>
<span id="L449" class="LineNr"> 449 </span> <span class="subxComment"># *curr-function = new-function</span>
<span id="L450" class="LineNr"> 450 </span> <span class="subxComment"># curr-function = &new-function->next</span>
<span id="L451" class="LineNr"> 451 </span> <span class="subxComment"># else</span>
<span id="L452" class="LineNr"> 452 </span> <span class="subxComment"># abort()</span>
<span id="L453" class="LineNr"> 453 </span> <span class="subxComment">#</span>
<span id="L454" class="LineNr"> 454 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L455" class="LineNr"> 455 </span> 55/push-ebp
<span id="L456" class="LineNr"> 456 </span> 89/<- %ebp 4/r32/esp
<span id="L457" class="LineNr"> 457 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L458" class="LineNr"> 458 </span> 50/push-eax
<span id="L459" class="LineNr"> 459 </span> 51/push-ecx
<span id="L460" class="LineNr"> 460 </span> 52/push-edx
<span id="L461" class="LineNr"> 461 </span> 57/push-edi
<span id="L462" class="LineNr"> 462 </span> <span class="subxComment"># var line/ecx : (stream byte 512)</span>
<span id="L463" class="LineNr"> 463 </span> 81 5/subop/subtract %esp 0x200/imm32
<span id="L464" class="LineNr"> 464 </span> 68/push 0x200/imm32/length
<span id="L465" class="LineNr"> 465 </span> 68/push 0/imm32/read
<span id="L466" class="LineNr"> 466 </span> 68/push 0/imm32/write
<span id="L467" class="LineNr"> 467 </span> 89/<- %ecx 4/r32/esp
<span id="L468" class="LineNr"> 468 </span> <span class="subxComment"># var word-slice/edx : slice</span>
<span id="L469" class="LineNr"> 469 </span> 68/push 0/imm32/end
<span id="L470" class="LineNr"> 470 </span> 68/push 0/imm32/start
<span id="L471" class="LineNr"> 471 </span> 89/<- %edx 4/r32/esp
<span id="L472" class="LineNr"> 472 </span> <span class="subxComment"># var curr-function/edi : (address function) = Program</span>
<span id="L473" class="LineNr"> 473 </span> bf/copy-to-edi <span class="SpecialChar"><a href='mu.subx.html#L146'>Program</a></span>/imm32
<span id="L474" class="LineNr"> 474 </span> {
<span id="L475" class="LineNr"> 475 </span><span class="Constant">$parse-mu:line-loop</span>:
<span id="L476" class="LineNr"> 476 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> %ecx)
<span id="L477" class="LineNr"> 477 </span> (<a href='../071read-line.subx.html#L9'>read-line-buffered</a> *(ebp+8) %ecx)
<span id="L478" class="LineNr"> 478 </span> <span class="subxComment"># if (line->write == 0) break</span>
<span id="L479" class="LineNr"> 479 </span> 81 7/subop/compare *ecx 0/imm32
<span id="L480" class="LineNr"> 480 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L481" class="Folded"> 481 </span><span class="Folded">+-- 6 lines: #? # dump line ---------------------------------------------------------------------------------------------------------------------------</span>
<span id="L487" class="LineNr"> 487 </span> { <span class="subxComment"># word loop</span>
<span id="L488" class="LineNr"> 488 </span><span class="Constant">$parse-mu:word-loop</span>:
<span id="L489" class="LineNr"> 489 </span> (<a href='../094next-word-or-string.subx.html#L8'>next-word-or-string</a> %ecx %edx)
<span id="L490" class="LineNr"> 490 </span> <span class="subxComment"># if slice-empty?(word-slice) break</span>
<span id="L491" class="LineNr"> 491 </span> (<a href='../072slice.subx.html#L9'>slice-empty?</a> %edx)
<span id="L492" class="LineNr"> 492 </span> 3d/compare-eax-and 0/imm32
<span id="L493" class="LineNr"> 493 </span> 0f 85/jump-if-not-equal <span class="Constant">break</span>/disp32
<span id="L494" class="LineNr"> 494 </span> <span class="subxComment"># if (*word-slice->start == "#") break</span>
<span id="L495" class="LineNr"> 495 </span> <span class="subxS1Comment"># . eax = *word-slice->start</span>
<span id="L496" class="LineNr"> 496 </span> 8b/-> *edx 0/r32/eax
<span id="L497" class="LineNr"> 497 </span> 8a/copy-byte *eax 0/r32/AL
<span id="L498" class="LineNr"> 498 </span> 81 4/subop/and %eax 0xff/imm32
<span id="L499" class="LineNr"> 499 </span> <span class="subxS1Comment"># . if (eax == '#') break</span>
<span id="L500" class="LineNr"> 500 </span> 3d/compare-eax-and 0x23/imm32/hash
<span id="L501" class="LineNr"> 501 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L502" class="LineNr"> 502 </span> <span class="subxComment"># if (slice-equal?(word-slice, "fn")) parse a function</span>
<span id="L503" class="LineNr"> 503 </span> {
<span id="L504" class="LineNr"> 504 </span> (<a href='../072slice.subx.html#L91'>slice-equal?</a> %edx <span class="Constant">"fn"</span>)
<span id="L505" class="LineNr"> 505 </span> 3d/compare-eax-and 0/imm32
<span id="L506" class="LineNr"> 506 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L507" class="LineNr"> 507 </span> <span class="subxComment"># var new-function/eax : (address function) = populate-mu-function()</span>
<span id="L508" class="LineNr"> 508 </span> (<a href='../069allocate.subx.html#L61'>allocate</a> <span class="SpecialChar"><a href='../069allocate.subx.html#L22'>Heap</a></span> *<span class="SpecialChar"><a href='mu.subx.html#L157'>Function-size</a></span>) <span class="subxComment"># => eax</span>
<span id="L509" class="LineNr"> 509 </span> (<a href='mu.subx.html#L552'>populate-mu-function-header</a> %ecx %eax)
<span id="L510" class="LineNr"> 510 </span> (<a href='mu.subx.html#L621'>populate-mu-function-body</a> *(ebp+8) %eax)
<span id="L511" class="LineNr"> 511 </span> <span class="subxComment"># *curr-function = new-function</span>
<span id="L512" class="LineNr"> 512 </span> 89/<- *edi 0/r32/eax
<span id="L513" class="LineNr"> 513 </span> <span class="subxComment"># curr-function = &new-function->next</span>
<span id="L514" class="LineNr"> 514 </span> 8d/address-> *(eax+0x10) 7/r32/edi
<span id="L515" class="LineNr"> 515 </span> e9/jump $parse-mu:word-loop/disp32
<span id="L516" class="LineNr"> 516 </span> }
<span id="L517" class="LineNr"> 517 </span> <span class="subxComment"># otherwise abort</span>
<span id="L518" class="LineNr"> 518 </span> e9/jump $parse-mu:abort/disp32
<span id="L519" class="LineNr"> 519 </span> } <span class="subxComment"># end word loop</span>
<span id="L520" class="LineNr"> 520 </span> e9/jump <span class="Constant">loop</span>/disp32
<span id="L521" class="LineNr"> 521 </span> } <span class="subxComment"># end line loop</span>
<span id="L522" class="LineNr"> 522 </span><span class="Constant">$parse-mu:end</span>:
<span id="L523" class="LineNr"> 523 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L524" class="LineNr"> 524 </span> 81 0/subop/add %esp 0x214/imm32
<span id="L525" class="LineNr"> 525 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L526" class="LineNr"> 526 </span> 5f/pop-to-edi
<span id="L527" class="LineNr"> 527 </span> 5a/pop-to-edx
<span id="L528" class="LineNr"> 528 </span> 59/pop-to-ecx
<span id="L529" class="LineNr"> 529 </span> 58/pop-to-eax
<span id="L530" class="LineNr"> 530 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L531" class="LineNr"> 531 </span> 89/<- %esp 5/r32/ebp
<span id="L532" class="LineNr"> 532 </span> 5d/pop-to-ebp
<span id="L533" class="LineNr"> 533 </span> c3/return
<span id="L534" class="LineNr"> 534 </span>
<span id="L535" class="LineNr"> 535 </span><span class="Constant">$parse-mu:abort</span>:
<span id="L536" class="LineNr"> 536 </span> <span class="subxComment"># error("unexpected top-level command: " word-slice "\n")</span>
<span id="L537" class="LineNr"> 537 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"unexpected top-level command: "</span>)
<span id="L538" class="LineNr"> 538 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> %edx)
<span id="L539" class="LineNr"> 539 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"\n"</span>)
<span id="L540" class="LineNr"> 540 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span>)
<span id="L541" class="LineNr"> 541 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L542" class="LineNr"> 542 </span> bb/copy-to-ebx 1/imm32
<span id="L543" class="LineNr"> 543 </span> b8/copy-to-eax 1/imm32/exit
<span id="L544" class="LineNr"> 544 </span> cd/syscall 0x80/imm8
<span id="L545" class="LineNr"> 545 </span> <span class="subxComment"># never gets here</span>
<span id="L546" class="LineNr"> 546 </span>
<span id="L547" class="LineNr"> 547 </span><span class="subxComment"># errors considered:</span>
<span id="L548" class="LineNr"> 548 </span><span class="subxComment"># fn foo { {</span>
<span id="L549" class="LineNr"> 549 </span><span class="subxComment"># fn foo { }</span>
<span id="L550" class="LineNr"> 550 </span><span class="subxComment"># fn foo { } {</span>
<span id="L551" class="LineNr"> 551 </span><span class="subxComment"># fn foo # no block</span>
<span id="L552" class="LineNr"> 552 </span><span class="subxFunction">populate-mu-function-header</span>: <span class="subxComment"># first-line : (address stream byte), out : (address function)</span>
<span id="L553" class="LineNr"> 553 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L554" class="LineNr"> 554 </span> 55/push-ebp
<span id="L555" class="LineNr"> 555 </span> 89/<- %ebp 4/r32/esp
<span id="L556" class="LineNr"> 556 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L557" class="LineNr"> 557 </span> 50/push-eax
<span id="L558" class="LineNr"> 558 </span> 51/push-ecx
<span id="L559" class="LineNr"> 559 </span> 57/push-edi
<span id="L560" class="LineNr"> 560 </span> <span class="subxComment"># edi = out</span>
<span id="L561" class="LineNr"> 561 </span> 8b/-> *(ebp+0xc) 7/r32/edi
<span id="L562" class="LineNr"> 562 </span> <span class="subxComment"># var word-slice/ecx : slice</span>
<span id="L563" class="LineNr"> 563 </span> 68/push 0/imm32/end
<span id="L564" class="LineNr"> 564 </span> 68/push 0/imm32/start
<span id="L565" class="LineNr"> 565 </span> 89/<- %ecx 4/r32/esp
<span id="L566" class="LineNr"> 566 </span> <span class="subxComment"># save function name</span>
<span id="L567" class="LineNr"> 567 </span> (<a href='../076next-word.subx.html#L10'>next-word</a> *(ebp+8) %ecx)
<span id="L568" class="LineNr"> 568 </span> (<a href='../072slice.subx.html#L1013'>slice-to-string</a> <span class="SpecialChar"><a href='../069allocate.subx.html#L22'>Heap</a></span> %ecx) <span class="subxComment"># => eax</span>
<span id="L569" class="LineNr"> 569 </span> 89/<- *edi 0/r32/eax
<span id="L570" class="LineNr"> 570 </span> <span class="subxComment"># assert that next token is '{'</span>
<span id="L571" class="LineNr"> 571 </span> (<a href='../076next-word.subx.html#L10'>next-word</a> *(ebp+8) %ecx)
<span id="L572" class="LineNr"> 572 </span> (<a href='../072slice.subx.html#L91'>slice-equal?</a> %ecx <span class="Constant">"{"</span>)
<span id="L573" class="LineNr"> 573 </span> 3d/compare-eax-and 0/imm32
<span id="L574" class="LineNr"> 574 </span> 74/jump-if-equal $populate-mu-function-header:abort/disp8
<span id="L575" class="LineNr"> 575 </span> <span class="subxComment"># assert that there's no further token</span>
<span id="L576" class="LineNr"> 576 </span> {
<span id="L577" class="LineNr"> 577 </span> <span class="subxComment"># word-slice = next-word(line)</span>
<span id="L578" class="LineNr"> 578 </span> (<a href='../076next-word.subx.html#L10'>next-word</a> *(ebp+8) %ecx)
<span id="L579" class="LineNr"> 579 </span> <span class="subxComment"># if (word-slice == '') break</span>
<span id="L580" class="LineNr"> 580 </span> (<a href='../072slice.subx.html#L9'>slice-empty?</a> %ecx)
<span id="L581" class="LineNr"> 581 </span> 3d/compare-eax-and 0/imm32
<span id="L582" class="LineNr"> 582 </span> 75/jump-if-not-equal <span class="Constant">break</span>/disp8
<span id="L583" class="LineNr"> 583 </span> <span class="subxComment"># if (slice-starts-with?(word-slice, "#")) break</span>
<span id="L584" class="LineNr"> 584 </span> <span class="subxS1Comment"># . eax = *word-slice->start</span>
<span id="L585" class="LineNr"> 585 </span> 8b/-> *edx 0/r32/eax
<span id="L586" class="LineNr"> 586 </span> 8a/copy-byte *eax 0/r32/AL
<span id="L587" class="LineNr"> 587 </span> 81 4/subop/and %eax 0xff/imm32
<span id="L588" class="LineNr"> 588 </span> <span class="subxS1Comment"># . if (eax == '#') break</span>
<span id="L589" class="LineNr"> 589 </span> 3d/compare-eax-and 0x23/imm32/hash
<span id="L590" class="LineNr"> 590 </span> 74/jump-if-equal <span class="Constant">break</span>/disp8
<span id="L591" class="LineNr"> 591 </span> <span class="subxComment"># otherwise abort</span>
<span id="L592" class="LineNr"> 592 </span> eb/jump $populate-mu-function-header:abort/disp8
<span id="L593" class="LineNr"> 593 </span> }
<span id="L594" class="LineNr"> 594 </span><span class="Constant">$populate-mu-function-header:end</span>:
<span id="L595" class="LineNr"> 595 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L596" class="LineNr"> 596 </span> 81 0/subop/add %esp 8/imm32
<span id="L597" class="LineNr"> 597 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L598" class="LineNr"> 598 </span> 5f/pop-to-edi
<span id="L599" class="LineNr"> 599 </span> 59/pop-to-ecx
<span id="L600" class="LineNr"> 600 </span> 58/pop-to-eax
<span id="L601" class="LineNr"> 601 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L602" class="LineNr"> 602 </span> 89/<- %esp 5/r32/ebp
<span id="L603" class="LineNr"> 603 </span> 5d/pop-to-ebp
<span id="L604" class="LineNr"> 604 </span> c3/return
<span id="L605" class="LineNr"> 605 </span>
<span id="L606" class="LineNr"> 606 </span><span class="Constant">$populate-mu-function-header:abort</span>:
<span id="L607" class="LineNr"> 607 </span> <span class="subxComment"># error("function header not in form 'fn <name> {'")</span>
<span id="L608" class="LineNr"> 608 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"function header not in form 'fn <name> {' -- '"</span>)
<span id="L609" class="LineNr"> 609 </span> (<a href='../055stream.subx.html#L54'>rewind-stream</a> *(ebp+8))
<span id="L610" class="LineNr"> 610 </span> (<a href='../062write-stream.subx.html#L18'>write-stream</a> 2 *(ebp+8))
<span id="L611" class="LineNr"> 611 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"'\n"</span>)
<span id="L612" class="LineNr"> 612 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span>)
<span id="L613" class="LineNr"> 613 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L614" class="LineNr"> 614 </span> bb/copy-to-ebx 1/imm32
<span id="L615" class="LineNr"> 615 </span> b8/copy-to-eax 1/imm32/exit
<span id="L616" class="LineNr"> 616 </span> cd/syscall 0x80/imm8
<span id="L617" class="LineNr"> 617 </span> <span class="subxComment"># never gets here</span>
<span id="L618" class="LineNr"> 618 </span>
<span id="L619" class="LineNr"> 619 </span><span class="subxComment"># errors considered:</span>
<span id="L620" class="LineNr"> 620 </span><span class="subxComment"># { abc</span>
<span id="L621" class="LineNr"> 621 </span><span class="subxFunction">populate-mu-function-body</span>: <span class="subxComment"># in : (address buffered-file), out : (address function)</span>
<span id="L622" class="LineNr"> 622 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L623" class="LineNr"> 623 </span> 55/push-ebp
<span id="L624" class="LineNr"> 624 </span> 89/<- %ebp 4/r32/esp
<span id="L625" class="LineNr"> 625 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L626" class="LineNr"> 626 </span> 50/push-eax
<span id="L627" class="LineNr"> 627 </span> 51/push-ecx
<span id="L628" class="LineNr"> 628 </span> 52/push-edx
<span id="L629" class="LineNr"> 629 </span> 53/push-ebx
<span id="L630" class="LineNr"> 630 </span> <span class="subxComment"># var line/ecx : (stream byte 512)</span>
<span id="L631" class="LineNr"> 631 </span> 81 5/subop/subtract %esp 0x200/imm32
<span id="L632" class="LineNr"> 632 </span> 68/push 0x200/imm32/length
<span id="L633" class="LineNr"> 633 </span> 68/push 0/imm32/read
<span id="L634" class="LineNr"> 634 </span> 68/push 0/imm32/write
<span id="L635" class="LineNr"> 635 </span> 89/<- %ecx 4/r32/esp
<span id="L636" class="LineNr"> 636 </span> <span class="subxComment"># var word-slice/edx : slice</span>
<span id="L637" class="LineNr"> 637 </span> 68/push 0/imm32/end
<span id="L638" class="LineNr"> 638 </span> 68/push 0/imm32/start
<span id="L639" class="LineNr"> 639 </span> 89/<- %edx 4/r32/esp
<span id="L640" class="LineNr"> 640 </span> <span class="subxComment"># var open-curly-count/ebx : int = 1</span>
<span id="L641" class="LineNr"> 641 </span> bb/copy-to-ebx 1/imm32
<span id="L642" class="LineNr"> 642 </span> { <span class="subxComment"># line loop</span>
<span id="L643" class="LineNr"> 643 </span><span class="Constant">$populate-mu-function-body:line-loop</span>:
<span id="L644" class="LineNr"> 644 </span> <span class="subxComment"># if (open-curly-count == 0) break</span>
<span id="L645" class="LineNr"> 645 </span> 81 7/subop/compare %ebx 0/imm32
<span id="L646" class="LineNr"> 646 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L647" class="LineNr"> 647 </span> <span class="subxComment"># line = read-line-buffered(in)</span>
<span id="L648" class="LineNr"> 648 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> %ecx)
<span id="L649" class="LineNr"> 649 </span> (<a href='../071read-line.subx.html#L9'>read-line-buffered</a> *(ebp+8) %ecx)
<span id="L650" class="LineNr"> 650 </span> <span class="subxComment"># if (line->write == 0) break</span>
<span id="L651" class="LineNr"> 651 </span> 81 7/subop/compare *ecx 0/imm32
<span id="L652" class="LineNr"> 652 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L653" class="LineNr"> 653 </span> <span class="subxComment"># word-slice = next-word(line)</span>
<span id="L654" class="LineNr"> 654 </span> (<a href='../076next-word.subx.html#L10'>next-word</a> %ecx %edx)
<span id="L655" class="LineNr"> 655 </span> <span class="subxComment"># if slice-empty?(word-slice) continue</span>
<span id="L656" class="LineNr"> 656 </span> (<a href='../072slice.subx.html#L9'>slice-empty?</a> %ecx)
<span id="L657" class="LineNr"> 657 </span> 3d/compare-eax-and 0/imm32
<span id="L658" class="LineNr"> 658 </span> 75/jump-if-not-equal <span class="Constant">loop</span>/disp8
<span id="L659" class="LineNr"> 659 </span> <span class="subxComment"># if (slice-starts-with?(word-slice, '#') continue</span>
<span id="L660" class="LineNr"> 660 </span> <span class="subxS1Comment"># . eax = *word-slice->start</span>
<span id="L661" class="LineNr"> 661 </span> 8b/-> *edx 0/r32/eax
<span id="L662" class="LineNr"> 662 </span> 8a/copy-byte *eax 0/r32/AL
<span id="L663" class="LineNr"> 663 </span> 81 4/subop/and %eax 0xff/imm32
<span id="L664" class="LineNr"> 664 </span> <span class="subxS1Comment"># . if (eax == '#') continue</span>
<span id="L665" class="LineNr"> 665 </span> 3d/compare-eax-and 0x23/imm32/hash
<span id="L666" class="LineNr"> 666 </span> 74/jump-if-equal <span class="Constant">loop</span>/disp8
<span id="L667" class="LineNr"> 667 </span> {
<span id="L668" class="LineNr"> 668 </span> <span class="subxComment"># if slice-equal?(word-slice, "{") ++open-curly-count</span>
<span id="L669" class="LineNr"> 669 </span> {
<span id="L670" class="LineNr"> 670 </span> (<a href='../072slice.subx.html#L91'>slice-equal?</a> %ecx <span class="Constant">"{"</span>)
<span id="L671" class="LineNr"> 671 </span> 3d/compare-eax-and 0/imm32
<span id="L672" class="LineNr"> 672 </span> 74/jump-if-equal <span class="Constant">break</span>/disp8
<span id="L673" class="LineNr"> 673 </span> 43/increment-ebx
<span id="L674" class="LineNr"> 674 </span> eb/jump $curly-found:end/disp8
<span id="L675" class="LineNr"> 675 </span> }
<span id="L676" class="LineNr"> 676 </span> <span class="subxComment"># else if slice-equal?(word-slice, "}") --open-curly-count</span>
<span id="L677" class="LineNr"> 677 </span> {
<span id="L678" class="LineNr"> 678 </span> (<a href='../072slice.subx.html#L91'>slice-equal?</a> %ecx <span class="Constant">"}"</span>)
<span id="L679" class="LineNr"> 679 </span> 3d/compare-eax-and 0/imm32
<span id="L680" class="LineNr"> 680 </span> 74/jump-if-equal <span class="Constant">break</span>/disp8
<span id="L681" class="LineNr"> 681 </span> 4b/decrement-ebx
<span id="L682" class="LineNr"> 682 </span> eb/jump $curly-found:end/disp8
<span id="L683" class="LineNr"> 683 </span> }
<span id="L684" class="LineNr"> 684 </span> <span class="subxComment"># else break</span>
<span id="L685" class="LineNr"> 685 </span> eb/jump $populate-mu-function-body:end/disp8
<span id="L686" class="LineNr"> 686 </span> }
<span id="L687" class="LineNr"> 687 </span> <span class="subxH1Comment"># - check for invalid tokens after curly</span>
<span id="L688" class="LineNr"> 688 </span><span class="Constant">$curly-found:end</span>:
<span id="L689" class="LineNr"> 689 </span> <span class="subxComment"># second-word-slice = next-word(line)</span>
<span id="L690" class="LineNr"> 690 </span> (<a href='../076next-word.subx.html#L10'>next-word</a> %ecx %edx)
<span id="L691" class="LineNr"> 691 </span> <span class="subxComment"># if slice-empty?(second-word-slice) continue</span>
<span id="L692" class="LineNr"> 692 </span> (<a href='../072slice.subx.html#L9'>slice-empty?</a> %ecx)
<span id="L693" class="LineNr"> 693 </span> 3d/compare-eax-and 0/imm32
<span id="L694" class="LineNr"> 694 </span> 0f 85/jump-if-not-equal <span class="Constant">loop</span>/disp32
<span id="L695" class="LineNr"> 695 </span> <span class="subxComment"># if (slice-starts-with?(second-word-slice, '#') continue</span>
<span id="L696" class="LineNr"> 696 </span> <span class="subxS1Comment"># . eax = *second-word-slice->start</span>
<span id="L697" class="LineNr"> 697 </span> 8b/-> *edx 0/r32/eax
<span id="L698" class="LineNr"> 698 </span> 8a/copy-byte *eax 0/r32/AL
<span id="L699" class="LineNr"> 699 </span> 81 4/subop/and %eax 0xff/imm32
<span id="L700" class="LineNr"> 700 </span> <span class="subxS1Comment"># . if (eax == '#') continue</span>
<span id="L701" class="LineNr"> 701 </span> 3d/compare-eax-and 0x23/imm32/hash
<span id="L702" class="LineNr"> 702 </span> 0f 84/jump-if-equal <span class="Constant">loop</span>/disp32
<span id="L703" class="LineNr"> 703 </span> <span class="subxComment"># abort</span>
<span id="L704" class="LineNr"> 704 </span> eb/jump $populate-mu-function-body:abort/disp8
<span id="L705" class="LineNr"> 705 </span> } <span class="subxComment"># end line loop</span>
<span id="L706" class="LineNr"> 706 </span><span class="Constant">$populate-mu-function-body:end</span>:
<span id="L707" class="LineNr"> 707 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L708" class="LineNr"> 708 </span> 81 0/subop/add %esp 0x214/imm32
<span id="L709" class="LineNr"> 709 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L710" class="LineNr"> 710 </span> 5b/pop-to-ebx
<span id="L711" class="LineNr"> 711 </span> 5a/pop-to-edx
<span id="L712" class="LineNr"> 712 </span> 59/pop-to-ecx
<span id="L713" class="LineNr"> 713 </span> 58/pop-to-eax
<span id="L714" class="LineNr"> 714 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L715" class="LineNr"> 715 </span> 89/<- %esp 5/r32/ebp
<span id="L716" class="LineNr"> 716 </span> 5d/pop-to-ebp
<span id="L717" class="LineNr"> 717 </span> c3/return
<span id="L718" class="LineNr"> 718 </span>
<span id="L719" class="LineNr"> 719 </span><span class="Constant">$populate-mu-function-body:abort</span>:
<span id="L720" class="LineNr"> 720 </span> <span class="subxComment"># error("'{' or '}' should be on its own line, but got '")</span>
<span id="L721" class="LineNr"> 721 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"'{' or '}' should be on its own line, but got '"</span>)
<span id="L722" class="LineNr"> 722 </span> (<a href='../055stream.subx.html#L54'>rewind-stream</a> %ecx)
<span id="L723" class="LineNr"> 723 </span> (<a href='../062write-stream.subx.html#L18'>write-stream</a> 2 %ecx)
<span id="L724" class="LineNr"> 724 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"'\n"</span>)
<span id="L725" class="LineNr"> 725 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span>)
<span id="L726" class="LineNr"> 726 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L727" class="LineNr"> 727 </span> bb/copy-to-ebx 1/imm32
<span id="L728" class="LineNr"> 728 </span> b8/copy-to-eax 1/imm32/exit
<span id="L729" class="LineNr"> 729 </span> cd/syscall 0x80/imm8
<span id="L730" class="LineNr"> 730 </span> <span class="subxComment"># never gets here</span>
<span id="L731" class="LineNr"> 731 </span>
<span id="L732" class="LineNr"> 732 </span><span class="subxFunction">check-mu-types</span>:
<span id="L733" class="LineNr"> 733 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L734" class="LineNr"> 734 </span> 55/push-ebp
<span id="L735" class="LineNr"> 735 </span> 89/<- %ebp 4/r32/esp
<span id="L736" class="LineNr"> 736 </span> <span class="subxComment">#</span>
<span id="L737" class="LineNr"> 737 </span><span class="Constant">$check-types:end</span>:
<span id="L738" class="LineNr"> 738 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L739" class="LineNr"> 739 </span> 89/<- %esp 5/r32/ebp
<span id="L740" class="LineNr"> 740 </span> 5d/pop-to-ebp
<span id="L741" class="LineNr"> 741 </span> c3/return
<span id="L742" class="LineNr"> 742 </span>
<span id="L743" class="LineNr"> 743 </span><span class="subxFunction">emit-subx</span>: <span class="subxComment"># out : (address buffered-file)</span>
<span id="L744" class="LineNr"> 744 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L745" class="LineNr"> 745 </span> 55/push-ebp
<span id="L746" class="LineNr"> 746 </span> 89/<- %ebp 4/r32/esp
<span id="L747" class="LineNr"> 747 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L748" class="LineNr"> 748 </span> 50/push-eax
<span id="L749" class="LineNr"> 749 </span> 51/push-ecx
<span id="L750" class="LineNr"> 750 </span> 57/push-edi
<span id="L751" class="LineNr"> 751 </span> <span class="subxComment"># edi = out</span>
<span id="L752" class="LineNr"> 752 </span> 8b/-> *(ebp+8) 7/r32/edi
<span id="L753" class="LineNr"> 753 </span> <span class="subxComment"># var curr/ecx : (address function) = Program</span>
<span id="L754" class="LineNr"> 754 </span> 8b/-> *<span class="SpecialChar"><a href='mu.subx.html#L146'>Program</a></span> 1/r32/ecx
<span id="L755" class="LineNr"> 755 </span> {
<span id="L756" class="LineNr"> 756 </span> <span class="subxComment"># if (curr == NULL) break</span>
<span id="L757" class="LineNr"> 757 </span> 81 7/subop/compare %ecx 0/imm32
<span id="L758" class="LineNr"> 758 </span> 0f 84/jump-if-equal <span class="Constant">break</span>/disp32
<span id="L759" class="LineNr"> 759 </span> (<a href='mu.subx.html#L780'>emit-subx-function</a> %edi %ecx)
<span id="L760" class="LineNr"> 760 </span> <span class="subxComment"># curr = curr->next</span>
<span id="L761" class="LineNr"> 761 </span> 8b/-> *(ecx+0x10) 1/r32/ecx
<span id="L762" class="LineNr"> 762 </span> e9/jump <span class="Constant">loop</span>/disp32
<span id="L763" class="LineNr"> 763 </span> }
<span id="L764" class="LineNr"> 764 </span><span class="Constant">$emit-subx:end</span>:
<span id="L765" class="LineNr"> 765 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L766" class="LineNr"> 766 </span> 5f/pop-to-edi
<span id="L767" class="LineNr"> 767 </span> 59/pop-to-ecx
<span id="L768" class="LineNr"> 768 </span> 58/pop-to-eax
<span id="L769" class="LineNr"> 769 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L770" class="LineNr"> 770 </span> 89/<- %esp 5/r32/ebp
<span id="L771" class="LineNr"> 771 </span> 5d/pop-to-ebp
<span id="L772" class="LineNr"> 772 </span> c3/return
<span id="L773" class="LineNr"> 773 </span>
<span id="L774" class="LineNr"> 774 </span><span class="subxComment"># == Emitting a function</span>
<span id="L775" class="LineNr"> 775 </span><span class="subxComment"># Emit function header</span>
<span id="L776" class="LineNr"> 776 </span><span class="subxComment"># Emit function prologue</span>
<span id="L777" class="LineNr"> 777 </span><span class="subxComment"># Translate function body</span>
<span id="L778" class="LineNr"> 778 </span><span class="subxComment"># Emit function epilogue</span>
<span id="L779" class="LineNr"> 779 </span>
<span id="L780" class="LineNr"> 780 </span><span class="subxFunction">emit-subx-function</span>: <span class="subxComment"># out : (address buffered-file), f : (address function)</span>
<span id="L781" class="LineNr"> 781 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L782" class="LineNr"> 782 </span> 55/push-ebp
<span id="L783" class="LineNr"> 783 </span> 89/<- %ebp 4/r32/esp
<span id="L784" class="LineNr"> 784 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L785" class="LineNr"> 785 </span> 50/push-eax
<span id="L786" class="LineNr"> 786 </span> 51/push-ecx
<span id="L787" class="LineNr"> 787 </span> 57/push-edi
<span id="L788" class="LineNr"> 788 </span> <span class="subxComment"># edi = out</span>
<span id="L789" class="LineNr"> 789 </span> 8b/-> *(ebp+8) 7/r32/edi
<span id="L790" class="LineNr"> 790 </span> <span class="subxComment"># ecx = f</span>
<span id="L791" class="LineNr"> 791 </span> 8b/-> *(ebp+0xc) 1/r32/ecx
<span id="L792" class="LineNr"> 792 </span> <span class="subxComment">#</span>
<span id="L793" class="LineNr"> 793 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> %edi *ecx)
<span id="L794" class="LineNr"> 794 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> %edi <span class="Constant">":\n"</span>)
<span id="L795" class="LineNr"> 795 </span> (<a href='mu.subx.html#L1019'>emit-subx-prologue</a> %edi)
<span id="L796" class="LineNr"> 796 </span> (<a href='mu.subx.html#L808'>emit-subx-block</a> %edi *(ecx+4)) <span class="subxComment"># TODO: offset</span>
<span id="L797" class="LineNr"> 797 </span> (<a href='mu.subx.html#L1033'>emit-subx-epilogue</a> %edi)
<span id="L798" class="LineNr"> 798 </span><span class="Constant">$emit-subx-function:end</span>:
<span id="L799" class="LineNr"> 799 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L800" class="LineNr"> 800 </span> 5f/pop-to-edi
<span id="L801" class="LineNr"> 801 </span> 59/pop-to-ecx
<span id="L802" class="LineNr"> 802 </span> 58/pop-to-eax
<span id="L803" class="LineNr"> 803 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L804" class="LineNr"> 804 </span> 89/<- %esp 5/r32/ebp
<span id="L805" class="LineNr"> 805 </span> 5d/pop-to-ebp
<span id="L806" class="LineNr"> 806 </span> c3/return
<span id="L807" class="LineNr"> 807 </span>
<span id="L808" class="LineNr"> 808 </span><span class="subxFunction">emit-subx-block</span>: <span class="subxComment"># out : (address buffered-file), block : (address block)</span>
<span id="L809" class="LineNr"> 809 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L810" class="LineNr"> 810 </span> 55/push-ebp
<span id="L811" class="LineNr"> 811 </span> 89/<- %ebp 4/r32/esp
<span id="L812" class="LineNr"> 812 </span> <span class="subxComment">#</span>
<span id="L813" class="LineNr"> 813 </span><span class="Constant">$emit-subx-block:end</span>:
<span id="L814" class="LineNr"> 814 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L815" class="LineNr"> 815 </span> 89/<- %esp 5/r32/ebp
<span id="L816" class="LineNr"> 816 </span> 5d/pop-to-ebp
<span id="L817" class="LineNr"> 817 </span> c3/return
<span id="L818" class="LineNr"> 818 </span>
<span id="L819" class="LineNr"> 819 </span><span class="subxFunction">emit-subx-statement</span>: <span class="subxComment"># out : (address buffered-file), stmt : (address statement), vars : (address variable), regs : (address array (address variable)), primitives : (address opcode-info), functions : (address function)</span>
<span id="L820" class="LineNr"> 820 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L821" class="LineNr"> 821 </span> 55/push-ebp
<span id="L822" class="LineNr"> 822 </span> 89/<- %ebp 4/r32/esp
<span id="L823" class="LineNr"> 823 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L824" class="LineNr"> 824 </span> 50/push-eax
<span id="L825" class="LineNr"> 825 </span> 51/push-ecx
<span id="L826" class="LineNr"> 826 </span> <span class="subxComment"># var curr/ecx : (address primitive) = primitives</span>
<span id="L827" class="LineNr"> 827 </span> 8b/-> *(ebp+0x18) 1/r32/ecx
<span id="L828" class="LineNr"> 828 </span> {
<span id="L829" class="LineNr"> 829 </span> <span class="subxComment"># if (curr != null) abort</span>
<span id="L830" class="LineNr"> 830 </span> 81 7/subop/compare *(ebp+0xc) 0/imm32
<span id="L831" class="LineNr"> 831 </span> 0f 84/jump-if-equal $emit-subx-statement:abort/disp32
<span id="L832" class="LineNr"> 832 </span> <span class="subxComment"># if (match(curr, stmt)) break</span>
<span id="L833" class="LineNr"> 833 </span> (<a href='mu.subx.html#L862'>mu-stmt-matches-primitive?</a> *(ebp+0xc) %ecx) <span class="subxComment"># => eax</span>
<span id="L834" class="LineNr"> 834 </span> 3d/compare-eax-and 0/imm32
<span id="L835" class="LineNr"> 835 </span> 75/jump-if-not-equal <span class="Constant">break</span>/disp8
<span id="L836" class="LineNr"> 836 </span> <span class="subxComment"># emit code for stmt according to curr and vars</span>
<span id="L837" class="LineNr"> 837 </span> <span class="subxComment"># curr = curr->next</span>
<span id="L838" class="LineNr"> 838 </span> 8b/-> *(ecx+0x10) 1/r32/ecx
<span id="L839" class="LineNr"> 839 </span> e9/jump <span class="Constant">loop</span>/disp32
<span id="L840" class="LineNr"> 840 </span> }
<span id="L841" class="LineNr"> 841 </span><span class="Constant">$emit-subx-statement:end</span>:
<span id="L842" class="LineNr"> 842 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L843" class="LineNr"> 843 </span> 59/pop-to-ecx
<span id="L844" class="LineNr"> 844 </span> 58/pop-to-eax
<span id="L845" class="LineNr"> 845 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L846" class="LineNr"> 846 </span> 89/<- %esp 5/r32/ebp
<span id="L847" class="LineNr"> 847 </span> 5d/pop-to-ebp
<span id="L848" class="LineNr"> 848 </span> c3/return
<span id="L849" class="LineNr"> 849 </span>
<span id="L850" class="LineNr"> 850 </span><span class="Constant">$emit-subx-statement:abort</span>:
<span id="L851" class="LineNr"> 851 </span> <span class="subxComment"># error("couldn't translate '" stmt "'\n")</span>
<span id="L852" class="LineNr"> 852 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"couldn't translate '"</span>)
<span id="L853" class="LineNr"> 853 </span><span class="CommentedCode">#? (emit-string Stderr *(ebp+0xc)) # TODO</span>
<span id="L854" class="LineNr"> 854 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"'\n"</span>)
<span id="L855" class="LineNr"> 855 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='../065write-buffered.subx.html#L209'>Stderr</a></span>)
<span id="L856" class="LineNr"> 856 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L857" class="LineNr"> 857 </span> bb/copy-to-ebx 1/imm32
<span id="L858" class="LineNr"> 858 </span> b8/copy-to-eax 1/imm32/exit
<span id="L859" class="LineNr"> 859 </span> cd/syscall 0x80/imm8
<span id="L860" class="LineNr"> 860 </span> <span class="subxComment"># never gets here</span>
<span id="L861" class="LineNr"> 861 </span>
<span id="L862" class="LineNr"> 862 </span><span class="subxFunction">mu-stmt-matches-primitive?</span>: <span class="subxComment"># stmt : (address statement), primitive : (address opcode-info) => result/eax : boolean</span>
<span id="L863" class="LineNr"> 863 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L864" class="LineNr"> 864 </span> 55/push-ebp
<span id="L865" class="LineNr"> 865 </span> 89/<- %ebp 4/r32/esp
<span id="L866" class="LineNr"> 866 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L867" class="LineNr"> 867 </span> 51/push-ecx
<span id="L868" class="LineNr"> 868 </span> <span class="subxComment"># return primitive->name == stmt->operation</span>
<span id="L869" class="LineNr"> 869 </span> 8b/-> *(ebp+8) 1/r32/ecx
<span id="L870" class="LineNr"> 870 </span> 8b/-> *(ebp+0xc) 0/r32/eax
<span id="L871" class="LineNr"> 871 </span> (<a href='../054string-equal.subx.html#L16'>string-equal?</a> *ecx *eax) <span class="subxComment"># => eax</span>
<span id="L872" class="LineNr"> 872 </span><span class="Constant">$mu-stmt-matches-primitive?:end</span>:
<span id="L873" class="LineNr"> 873 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L874" class="LineNr"> 874 </span> 59/pop-to-ecx
<span id="L875" class="LineNr"> 875 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L876" class="LineNr"> 876 </span> 89/<- %esp 5/r32/ebp
<span id="L877" class="LineNr"> 877 </span> 5d/pop-to-ebp
<span id="L878" class="LineNr"> 878 </span> c3/return
<span id="L879" class="LineNr"> 879 </span>
<span id="L880" class="LineNr"> 880 </span><span class="subxTest">test-emit-subx-statement-primitive</span>:
<span id="L881" class="LineNr"> 881 </span> <span class="subxComment"># Primitive operation on a variable on the stack.</span>
<span id="L882" class="LineNr"> 882 </span> <span class="subxComment"># increment foo</span>
<span id="L883" class="LineNr"> 883 </span> <span class="subxComment"># =></span>
<span id="L884" class="LineNr"> 884 </span> <span class="subxComment"># ff 0/subop/increment *(ebp-8)</span>
<span id="L885" class="LineNr"> 885 </span> <span class="subxComment">#</span>
<span id="L886" class="LineNr"> 886 </span> <span class="subxComment"># There's a variable on the var stack as follows:</span>
<span id="L887" class="LineNr"> 887 </span> <span class="subxComment"># name: 'foo'</span>
<span id="L888" class="LineNr"> 888 </span> <span class="subxComment"># type: int</span>
<span id="L889" class="LineNr"> 889 </span> <span class="subxComment"># location: -8 (negative numbers are on the stack;</span>
<span id="L890" class="LineNr"> 890 </span> <span class="subxComment"># 0-7 are in registers;</span>
<span id="L891" class="LineNr"> 891 </span> <span class="subxComment"># higher positive numbers are invalid)</span>
<span id="L892" class="LineNr"> 892 </span> <span class="subxComment">#</span>
<span id="L893" class="LineNr"> 893 </span> <span class="subxComment"># There's nothing in registers.</span>
<span id="L894" class="LineNr"> 894 </span> <span class="subxComment">#</span>
<span id="L895" class="LineNr"> 895 </span> <span class="subxComment"># There's a primitive with this info:</span>
<span id="L896" class="LineNr"> 896 </span> <span class="subxComment"># name: 'increment'</span>
<span id="L897" class="LineNr"> 897 </span> <span class="subxComment"># inout: int/mem</span>
<span id="L898" class="LineNr"> 898 </span> <span class="subxComment"># value: 'ff 0/subop/increment'</span>
<span id="L899" class="LineNr"> 899 </span> <span class="subxComment">#</span>
<span id="L900" class="LineNr"> 900 </span> <span class="subxComment"># There's nothing in functions.</span>
<span id="L901" class="LineNr"> 901 </span> <span class="subxComment">#</span>
<span id="L902" class="LineNr"> 902 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L903" class="LineNr"> 903 </span> 55/push-ebp
<span id="L904" class="LineNr"> 904 </span> 89/<- %ebp 4/r32/esp
<span id="L905" class="LineNr"> 905 </span> <span class="subxComment"># setup</span>
<span id="L906" class="LineNr"> 906 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L907" class="LineNr"> 907 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L908" class="LineNr"> 908 </span> <span class="subxS1Comment"># . ecx = vars</span>
<span id="L909" class="LineNr"> 909 </span> 68/push 0/imm32/next
<span id="L910" class="LineNr"> 910 </span> 68/push -8/imm32/stack-offset
<span id="L911" class="LineNr"> 911 </span> 68/push 0/imm32/int <span class="subxComment"># TODO</span>
<span id="L912" class="LineNr"> 912 </span> 68/push <span class="Constant">"foo"</span>/imm32
<span id="L913" class="LineNr"> 913 </span> 89/<- %ecx 4/r32/esp
<span id="L914" class="LineNr"> 914 </span> <span class="subxS1Comment"># . edx = operand</span>
<span id="L915" class="LineNr"> 915 </span> 68/push 0/imm32/next
<span id="L916" class="LineNr"> 916 </span> 51/push-ecx/var-foo
<span id="L917" class="LineNr"> 917 </span> 89/<- %edx 4/r32/esp
<span id="L918" class="LineNr"> 918 </span> <span class="subxS1Comment"># . edx = stmt</span>
<span id="L919" class="LineNr"> 919 </span> 68/push 0/imm32/next
<span id="L920" class="LineNr"> 920 </span> 68/push 0/imm32/outputs
<span id="L921" class="LineNr"> 921 </span> 52/push-edx/operand
<span id="L922" class="LineNr"> 922 </span> 68/push <span class="Constant">"increment"</span>/imm32/operation
<span id="L923" class="LineNr"> 923 </span> 89/<- %edx 4/r32/esp
<span id="L924" class="LineNr"> 924 </span> <span class="subxS1Comment"># . ebx = primitives</span>
<span id="L925" class="LineNr"> 925 </span> 68/push 0/imm32/next
<span id="L926" class="LineNr"> 926 </span> 68/push <span class="Constant">"ff 0/subop/increment"</span>/imm32
<span id="L927" class="LineNr"> 927 </span> 68/push 0/imm32/type-int
<span id="L928" class="LineNr"> 928 </span> 68/push 0/imm32/storage-memory
<span id="L929" class="LineNr"> 929 </span> 68/push <span class="Constant">"increment"</span>/imm32/name
<span id="L930" class="LineNr"> 930 </span> 89/<- %ebx 4/r32/esp
<span id="L931" class="LineNr"> 931 </span> <span class="subxComment"># convert</span>
<span id="L932" class="LineNr"> 932 </span> (<a href='mu.subx.html#L819'>emit-subx-statement</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a> %edx %ecx 0 %ebx 0)
<span id="L933" class="LineNr"> 933 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L934" class="Folded"> 934 </span><span class="Folded">+-- 6 lines: #? # dump _test-output-stream --------------------------------------------------------------------------------------------------------------</span>
<span id="L940" class="LineNr"> 940 </span> <span class="subxComment"># check output</span>
<span id="L941" class="LineNr"> 941 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"ff 0/subop/increment *(ebp-8)"</span> <span class="Constant">"F - <a href='mu.subx.html#L880'>test-emit-subx-statement-primitive</a>/0"</span>)
<span id="L942" class="LineNr"> 942 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L943" class="LineNr"> 943 </span> 81 0/subop/add %esp 0x3c/imm32
<span id="L944" class="LineNr"> 944 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L945" class="LineNr"> 945 </span> 89/<- %esp 5/r32/ebp
<span id="L946" class="LineNr"> 946 </span> 5d/pop-to-ebp
<span id="L947" class="LineNr"> 947 </span> c3/return
<span id="L948" class="LineNr"> 948 </span>
<span id="L949" class="LineNr"> 949 </span><span class="subxTest">test-emit-subx-statement-function-call</span>:
<span id="L950" class="LineNr"> 950 </span> <span class="subxComment"># Call a function on a variable on the stack.</span>
<span id="L951" class="LineNr"> 951 </span> <span class="subxComment"># f var</span>
<span id="L952" class="LineNr"> 952 </span> <span class="subxComment"># =></span>
<span id="L953" class="LineNr"> 953 </span> <span class="subxComment"># (f2 *(ebp-8))</span>
<span id="L954" class="LineNr"> 954 </span> <span class="subxComment"># (Changing the function name just to help disambiguate things.)</span>
<span id="L955" class="LineNr"> 955 </span> <span class="subxComment">#</span>
<span id="L956" class="LineNr"> 956 </span> <span class="subxComment"># There's a variable on the var stack as follows:</span>
<span id="L957" class="LineNr"> 957 </span> <span class="subxComment"># name: 'var'</span>
<span id="L958" class="LineNr"> 958 </span> <span class="subxComment"># type: int</span>
<span id="L959" class="LineNr"> 959 </span> <span class="subxComment"># location: -8 (negative numbers are on the stack;</span>
<span id="L960" class="LineNr"> 960 </span> <span class="subxComment"># 0-7 are in registers;</span>
<span id="L961" class="LineNr"> 961 </span> <span class="subxComment"># higher positive numbers are invalid)</span>
<span id="L962" class="LineNr"> 962 </span> <span class="subxComment">#</span>
<span id="L963" class="LineNr"> 963 </span> <span class="subxComment"># There's nothing in registers.</span>
<span id="L964" class="LineNr"> 964 </span> <span class="subxComment">#</span>
<span id="L965" class="LineNr"> 965 </span> <span class="subxComment"># There's nothing in primitives.</span>
<span id="L966" class="LineNr"> 966 </span> <span class="subxComment">#</span>
<span id="L967" class="LineNr"> 967 </span> <span class="subxComment"># There's a function with this info:</span>
<span id="L968" class="LineNr"> 968 </span> <span class="subxComment"># name: 'f'</span>
<span id="L969" class="LineNr"> 969 </span> <span class="subxComment"># inout: int/mem</span>
<span id="L970" class="LineNr"> 970 </span> <span class="subxComment"># value: 'f2'</span>
<span id="L971" class="LineNr"> 971 </span> <span class="subxComment">#</span>
<span id="L972" class="LineNr"> 972 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L973" class="LineNr"> 973 </span> 55/push-ebp
<span id="L974" class="LineNr"> 974 </span> 89/<- %ebp 4/r32/esp
<span id="L975" class="LineNr"> 975 </span> <span class="subxComment"># setup</span>
<span id="L976" class="LineNr"> 976 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a>)
<span id="L977" class="LineNr"> 977 </span> (<a href='../055stream.subx.html#L17'>clear-stream</a> <a href='../064write-byte.subx.html#L331'>_test-output-buffered-file->buffer</a>)
<span id="L978" class="LineNr"> 978 </span> <span class="subxS1Comment"># . ecx = vars</span>
<span id="L979" class="LineNr"> 979 </span> 68/push 0/imm32/next
<span id="L980" class="LineNr"> 980 </span> 68/push -8/imm32/stack-offset
<span id="L981" class="LineNr"> 981 </span> 68/push 0/imm32/int <span class="subxComment"># TODO</span>
<span id="L982" class="LineNr"> 982 </span> 68/push <span class="Constant">"var"</span>/imm32
<span id="L983" class="LineNr"> 983 </span> 89/<- %ecx 4/r32/esp
<span id="L984" class="LineNr"> 984 </span> <span class="subxS1Comment"># . edx = operand</span>
<span id="L985" class="LineNr"> 985 </span> 68/push 0/imm32/next
<span id="L986" class="LineNr"> 986 </span> 51/push-ecx/var
<span id="L987" class="LineNr"> 987 </span> 89/<- %edx 4/r32/esp
<span id="L988" class="LineNr"> 988 </span> <span class="subxS1Comment"># . edx = stmt</span>
<span id="L989" class="LineNr"> 989 </span> 68/push 0/imm32/next
<span id="L990" class="LineNr"> 990 </span> 68/push 0/imm32/outputs
<span id="L991" class="LineNr"> 991 </span> 52/push-edx/operand
<span id="L992" class="LineNr"> 992 </span> 68/push <span class="Constant">"f"</span>/imm32/operation
<span id="L993" class="LineNr"> 993 </span> 89/<- %edx 4/r32/esp
<span id="L994" class="LineNr"> 994 </span> <span class="subxS1Comment"># . ebx = functions</span>
<span id="L995" class="LineNr"> 995 </span> 68/push 0/imm32/next
<span id="L996" class="LineNr"> 996 </span> 68/push <span class="Constant">"f2"</span>/imm32
<span id="L997" class="LineNr"> 997 </span> 68/push 0/imm32/type-int
<span id="L998" class="LineNr"> 998 </span> 68/push 0/imm32/storage-memory
<span id="L999" class="LineNr"> 999 </span> 68/push <span class="Constant">"f"</span>/imm32/name
<span id="L1000" class="LineNr">1000 </span> 89/<- %ebx 4/r32/esp
<span id="L1001" class="LineNr">1001 </span> <span class="subxComment"># convert</span>
<span id="L1002" class="LineNr">1002 </span> (<a href='mu.subx.html#L819'>emit-subx-statement</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a> %edx %ecx 0 0 %ebx)
<span id="L1003" class="LineNr">1003 </span> (<a href='../064write-byte.subx.html#L81'>flush</a> <a href='../064write-byte.subx.html#L328'>_test-output-buffered-file</a>)
<span id="L1004" class="Folded">1004 </span><span class="Folded">+-- 6 lines: #? # dump _test-output-stream --------------------------------------------------------------------------------------------------------------</span>
<span id="L1010" class="LineNr">1010 </span> <span class="subxComment"># check output</span>
<span id="L1011" class="LineNr">1011 </span> (<a href='../058stream-equal.subx.html#L563'>check-next-stream-line-equal</a> <a href='../064write-byte.subx.html#L286'>_test-output-stream</a> <span class="Constant">"f2 *(ebp-8)"</span> <span class="Constant">"F - <a href='mu.subx.html#L949'>test-emit-subx-statement-function-call</a>/0"</span>)
<span id="L1012" class="LineNr">1012 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L1013" class="LineNr">1013 </span> 81 0/subop/add %esp 0x3c/imm32
<span id="L1014" class="LineNr">1014 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L1015" class="LineNr">1015 </span> 89/<- %esp 5/r32/ebp
<span id="L1016" class="LineNr">1016 </span> 5d/pop-to-ebp
<span id="L1017" class="LineNr">1017 </span> c3/return
<span id="L1018" class="LineNr">1018 </span>
<span id="L1019" class="LineNr">1019 </span><span class="subxFunction">emit-subx-prologue</span>: <span class="subxComment"># out : (address buffered-file)</span>
<span id="L1020" class="LineNr">1020 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L1021" class="LineNr">1021 </span> 55/push-ebp
<span id="L1022" class="LineNr">1022 </span> 89/<- %ebp 4/r32/esp
<span id="L1023" class="LineNr">1023 </span> <span class="subxComment">#</span>
<span id="L1024" class="LineNr">1024 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"# . prologue\n"</span>)
<span id="L1025" class="LineNr">1025 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"55/push-ebp\n"</span>)
<span id="L1026" class="LineNr">1026 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"89/<- %ebp 4/r32/esp\n"</span>)
<span id="L1027" class="LineNr">1027 </span><span class="Constant">$emit-subx-prologue:end</span>:
<span id="L1028" class="LineNr">1028 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L1029" class="LineNr">1029 </span> 89/<- %esp 5/r32/ebp
<span id="L1030" class="LineNr">1030 </span> 5d/pop-to-ebp
<span id="L1031" class="LineNr">1031 </span> c3/return
<span id="L1032" class="LineNr">1032 </span>
<span id="L1033" class="LineNr">1033 </span><span class="subxFunction">emit-subx-epilogue</span>: <span class="subxComment"># out : (address buffered-file)</span>
<span id="L1034" class="LineNr">1034 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L1035" class="LineNr">1035 </span> 55/push-ebp
<span id="L1036" class="LineNr">1036 </span> 89/<- %ebp 4/r32/esp
<span id="L1037" class="LineNr">1037 </span> <span class="subxComment">#</span>
<span id="L1038" class="LineNr">1038 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"# . epilogue\n"</span>)
<span id="L1039" class="LineNr">1039 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"89/<- %esp 5/r32/ebp\n"</span>)
<span id="L1040" class="LineNr">1040 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"5d/pop-to-ebp\n"</span>)
<span id="L1041" class="LineNr">1041 </span> (<a href='../065write-buffered.subx.html#L8'>write-buffered</a> *(ebp+8) <span class="Constant">"c3/return\n"</span>)
<span id="L1042" class="LineNr">1042 </span><span class="Constant">$emit-subx-epilogue:end</span>:
<span id="L1043" class="LineNr">1043 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L1044" class="LineNr">1044 </span> 89/<- %esp 5/r32/ebp
<span id="L1045" class="LineNr">1045 </span> 5d/pop-to-ebp
<span id="L1046" class="LineNr">1046 </span> c3/return
</pre>
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