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| -rw-r--r-- | apps/calls.subx | 216 | ||||
| -rw-r--r-- | html/apps/calls.subx.html | 279 |
2 files changed, 495 insertions, 0 deletions
diff --git a/apps/calls.subx b/apps/calls.subx new file mode 100644 index 00000000..67f4027b --- /dev/null +++ b/apps/calls.subx @@ -0,0 +1,216 @@ +# Function calls in a single line. +# +# To run (on Linux): +# $ ./ntranslate 0*.subx apps/subx-common.subx apps/calls.subx +# $ mv a.elf apps/calls +# $ chmod +x apps/calls +# +# Example 1: +# $ echo '(foo %eax)' | apps/calls +# # . (foo %eax) # output has comments +# ff 6/subop/push %eax # push +# e8/call foo/disp32 # call +# 81 0/subop/add %esp 4/imm32 # undo push +# +# Example 2: +# $ echo '(foo Var1 *(eax + 4) "blah")' | apps/calls +# # . (foo Var1 *(eax + 4) "blah") +# 68/push "blah"/imm32 +# ff 6/subop/push *(eax + 4) # push args in.. +# 68/push Var1/imm32 # ..reverse order +# e8/call foo/disp32 +# 81 0/subop/add %esp 4/imm32 # undo pushes +# +# Calls always begin with '(' as the first non-whitespace on a line. + +== code + +Entry: # run tests if necessary, convert stdin if not + # . prolog + 89/<- %ebp 4/r32/esp + + # initialize heap + # . Heap = new-segment(Heap-size) + # . . push args + 68/push Heap/imm32 + ff 6/subop/push *Heap-size + # . . call + e8/call new-segment/disp32 + # . . discard args + 81 0/subop/add %esp 8/imm32 + + # - if argc > 1 and argv[1] == "test", then return run_tests() + # if (argc <= 1) goto run-main + 81 7/subop/compare *ebp 1/imm32 + 7e/jump-if-lesser-or-equal $run-main/disp8 + # if (!kernel-string-equal?(argv[1], "test")) goto run-main + # . eax = kernel-string-equal?(argv[1], "test") + # . . push args + 68/push "test"/imm32 + ff 6/subop/push *(ebp+8) + # . . call + e8/call kernel-string-equal?/disp32 + # . . discard args + 81 0/subop/add %esp 8/imm32 + # . if (eax == 0) goto run-main + 3d/compare-eax-and 0/imm32 + 74/jump-if-equal $run-main/disp8 + # run-tests() + e8/call run-tests/disp32 + # syscall(exit, *Num-test-failures) + 8b/-> *Num-test-failures 3/r32/ebx + eb/jump $main:end/disp8 +$run-main: + # - otherwise convert stdin + # convert(Stdin, Stdout) + # . . push args + 68/push Stdout/imm32 + 68/push Stdin/imm32 + # . . call + e8/call convert/disp32 + # . . discard args + 81 0/subop/add %esp 8/imm32 + # syscall(exit, 0) + bb/copy-to-ebx 0/imm32 +$main:end: + b8/copy-to-eax 1/imm32/exit + cd/syscall 0x80/imm8 + +convert: # in : (address buffered-file), out : (address buffered-file) -> <void> + # pseudocode: + # var line = new-stream(512, 1) + # var words : (address stream slice) = new-stream(16, 8) # at most function name and 15 args + # while true + # clear-stream(line) + # read-line-buffered(in, line) + # if (line->write == 0) break # end of file + # skip-chars-matching-whitespace(line) + # if line->data[line->read] != '(' + # write-stream-data(out, line) + # continue + # # emit comment + # write-buffered(out, "# ") + # write-stream-data(out, line) + # # emit code + # ++line->read # skip '(' + # clear-stream(words) + # words = parse-line(line) + # emit-call(out, words) + # flush(out) + # + # . prolog + 55/push-ebp + 89/<- %ebp 4/r32/esp + # . save registers + # var line/ecx : (address stream byte) = stream(512) + 81 5/subop/subtract %esp 0x200/imm32 + 68/push 0x200/imm32/length + 68/push 0/imm32/read + 68/push 0/imm32/write + 89/<- %ecx 4/r32/esp + # var words/edx : (address stream slice) = stream(16, 8) + 81 5/subop/subtract %esp 0x80/imm32 + 68/push 0x80/imm32/length + 68/push 0/imm32/read + 68/push 0/imm32/write + 89/<- %edx 4/r32/esp +$convert:loop: + # clear-stream(line) + # . . push args + 51/push-ecx + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add %esp 4/imm32 + # read-line-buffered(in, line) + # . . push args + 51/push-ecx + ff 6/subop/push *(ebp+8) + # . . call + e8/call read-line-buffered/disp32 + # . . discard args + 81 0/subop/add %esp 8/imm32 +$convert:check0: + # if (line->write == 0) break + 81 7/subop/compare *ecx 0/imm32 + 0f 84/jump-if-equal $convert:break/disp32 + # TODO + e9/jump $convert:loop/disp32 +$convert:break: + # flush(out) + # . . push args + ff 6/subop/push *(ebp+0xc) + # . . call + e8/call flush/disp32 + # . . discard args + 81 0/subop/add %esp 4/imm32 +$convert:end: + # . reclaim locals + 81 0/subop/add %esp 0x298/imm32 # 0x20c + 0x8c + # . restore registers + # . epilog + 89/<- %esp 5/r32/ebp + 5d/pop-to-ebp + c3/return + +parse-line: # line : (address stream byte), words : (address stream slice) + # pseudocode: + # var word-slice : (address slice) + # while true + # word-slice = next-word-string-or-expression-without-metadata(line) + # if slice-empty?(word-slice) + # break # end of line + # write-int(words, word-slice->start) + # write-int(words, word-slice->end) + # + # . prolog + 55/push-ebp + 89/<- %ebp 4/r32/esp + # . save registers +$parse-line:end: + # . reclaim locals + # . restore registers + # . epilog + 89/<- %esp 5/r32/ebp + 5d/pop-to-ebp + c3/return + +emit-call: # out : (address buffered-file), words : (address stream slice) + # pseudocode: + # if (words->write < 8) abort + # curr = &words->data[words->write-8] + # min = words->data + # # emit pushes + # while true + # if (curr <= min) break + # if (*curr == '%' || *curr == '*') + # write-buffered(out, "ff 6/subop/push ") + # write-slice-buffered(out, curr) + # write-buffered(out, "/imm32\n") + # else + # write-buffered(out, "68/push ") + # write-slice-buffered(out, curr) + # write-buffered(out, "/imm32\n") + # curr -= 8 + # # emit call + # write-buffered(out, "e8/call ") + # write-slice-buffered(out, curr) + # write-buffered(out, "/disp32\n") + # # emit pops + # write-buffered(out, "81 0/subop/add %esp ") + # print-int32-buffered(out, words->write >> 1 - 4) + # write-buffered(out, "/imm32\n") + # + # . prolog + 55/push-ebp + 89/<- %ebp 4/r32/esp + # . save registers +$emit-call:end: + # . reclaim locals + # . restore registers + # . epilog + 89/<- %esp 5/r32/ebp + 5d/pop-to-ebp + c3/return + +# . . vim:nowrap:textwidth=0 diff --git a/html/apps/calls.subx.html b/html/apps/calls.subx.html new file mode 100644 index 00000000..e038ab0b --- /dev/null +++ b/html/apps/calls.subx.html @@ -0,0 +1,279 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - apps/calls.subx</title> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal-light"> +<style type="text/css"> +<!-- +pre { font-family: monospace; color: #000000; background-color: #c6c6c6; } +body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } +a { color:inherit; } +* { font-size:12pt; font-size: 1em; } +.subxComment { color: #005faf; } +.subxS2Comment { color: #8a8a8a; } +.subxFunction { color: #af5f00; text-decoration: underline; } +.LineNr { } +.subxS1Comment { color: #0000af; } +.SpecialChar { color: #d70000; } +.Constant { color: #008787; } +.subxH1Comment { color: #005faf; text-decoration: underline; } +--> +</style> + +<script type='text/javascript'> +<!-- + +/* function to open any folds containing a jumped-to line before jumping to it */ +function JumpToLine() +{ + var lineNum; + lineNum = window.location.hash; + lineNum = lineNum.substr(1); /* strip off '#' */ + + if (lineNum.indexOf('L') == -1) { + lineNum = 'L'+lineNum; + } + var lineElem = document.getElementById(lineNum); + /* Always jump to new location even if the line was hidden inside a fold, or + * we corrected the raw number to a line ID. + */ + if (lineElem) { + lineElem.scrollIntoView(true); + } + return true; +} +if ('onhashchange' in window) { + window.onhashchange = JumpToLine; +} + +--> +</script> +</head> +<body onload='JumpToLine();'> +<a href='https://github.com/akkartik/mu/blob/master/apps/calls.subx'>https://github.com/akkartik/mu/blob/master/apps/calls.subx</a> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Function calls in a single line.</span> +<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span> +<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># To run (on Linux):</span> +<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># $ ./ntranslate 0*.subx apps/subx-common.subx apps/calls.subx</span> +<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># $ mv a.elf apps/calls</span> +<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># $ chmod +x apps/calls</span> +<span id="L7" class="LineNr"> 7 </span><span class="subxComment">#</span> +<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># Example 1:</span> +<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># $ echo '(foo %eax)' | apps/calls</span> +<span id="L10" class="LineNr"> 10 </span><span class="subxComment"># # . (foo %eax) # output has comments</span> +<span id="L11" class="LineNr"> 11 </span><span class="subxComment"># ff 6/subop/push %eax # push</span> +<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># e8/call foo/disp32 # call</span> +<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># 81 0/subop/add %esp 4/imm32 # undo push</span> +<span id="L14" class="LineNr"> 14 </span><span class="subxComment">#</span> +<span id="L15" class="LineNr"> 15 </span><span class="subxComment"># Example 2:</span> +<span id="L16" class="LineNr"> 16 </span><span class="subxComment"># $ echo '(foo Var1 *(eax + 4) "blah")' | apps/calls</span> +<span id="L17" class="LineNr"> 17 </span><span class="subxComment"># # . (foo Var1 *(eax + 4) "blah")</span> +<span id="L18" class="LineNr"> 18 </span><span class="subxComment"># 68/push "blah"/imm32</span> +<span id="L19" class="LineNr"> 19 </span><span class="subxComment"># ff 6/subop/push *(eax + 4) # push args in..</span> +<span id="L20" class="LineNr"> 20 </span><span class="subxComment"># 68/push Var1/imm32 # ..reverse order</span> +<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># e8/call foo/disp32</span> +<span id="L22" class="LineNr"> 22 </span><span class="subxComment"># 81 0/subop/add %esp 4/imm32 # undo pushes</span> +<span id="L23" class="LineNr"> 23 </span><span class="subxComment">#</span> +<span id="L24" class="LineNr"> 24 </span><span class="subxComment"># Calls always begin with '(' as the first non-whitespace on a line.</span> +<span id="L25" class="LineNr"> 25 </span> +<span id="L26" class="LineNr"> 26 </span>== code +<span id="L27" class="LineNr"> 27 </span> +<span id="L28" class="LineNr"> 28 </span><span class="SpecialChar">Entry</span>: <span class="subxComment"># run tests if necessary, convert stdin if not</span> +<span id="L29" class="LineNr"> 29 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L30" class="LineNr"> 30 </span> 89/<- %ebp 4/r32/esp +<span id="L31" class="LineNr"> 31 </span> +<span id="L32" class="LineNr"> 32 </span> <span class="subxComment"># initialize heap</span> +<span id="L33" class="LineNr"> 33 </span> <span class="subxS1Comment"># . Heap = new-segment(Heap-size)</span> +<span id="L34" class="LineNr"> 34 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L35" class="LineNr"> 35 </span> 68/push <span class="SpecialChar"><a href='../075array-equal.subx.html#L623'>Heap</a></span>/imm32 +<span id="L36" class="LineNr"> 36 </span> ff 6/subop/push *<span class="SpecialChar">Heap-size</span> +<span id="L37" class="LineNr"> 37 </span> <span class="subxS2Comment"># . . call</span> +<span id="L38" class="LineNr"> 38 </span> e8/call <a href='../053new-segment.subx.html#L41'>new-segment</a>/disp32 +<span id="L39" class="LineNr"> 39 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L40" class="LineNr"> 40 </span> 81 0/subop/add %esp 8/imm32 +<span id="L41" class="LineNr"> 41 </span> +<span id="L42" class="LineNr"> 42 </span> <span class="subxH1Comment"># - if argc > 1 and argv[1] == "test", then return run_tests()</span> +<span id="L43" class="LineNr"> 43 </span> <span class="subxComment"># if (argc <= 1) goto run-main</span> +<span id="L44" class="LineNr"> 44 </span> 81 7/subop/compare *ebp 1/imm32 +<span id="L45" class="LineNr"> 45 </span> 7e/jump-if-lesser-or-equal $run-main/disp8 +<span id="L46" class="LineNr"> 46 </span> <span class="subxComment"># if (!kernel-string-equal?(argv[1], "test")) goto run-main</span> +<span id="L47" class="LineNr"> 47 </span> <span class="subxS1Comment"># . eax = kernel-string-equal?(argv[1], "test")</span> +<span id="L48" class="LineNr"> 48 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L49" class="LineNr"> 49 </span> 68/push <span class="Constant">"test"</span>/imm32 +<span id="L50" class="LineNr"> 50 </span> ff 6/subop/push *(ebp+8) +<span id="L51" class="LineNr"> 51 </span> <span class="subxS2Comment"># . . call</span> +<span id="L52" class="LineNr"> 52 </span> e8/call <a href='../052kernel-string-equal.subx.html#L31'>kernel-string-equal?</a>/disp32 +<span id="L53" class="LineNr"> 53 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L54" class="LineNr"> 54 </span> 81 0/subop/add %esp 8/imm32 +<span id="L55" class="LineNr"> 55 </span> <span class="subxS1Comment"># . if (eax == 0) goto run-main</span> +<span id="L56" class="LineNr"> 56 </span> 3d/compare-eax-and 0/imm32 +<span id="L57" class="LineNr"> 57 </span> 74/jump-if-equal $run-main/disp8 +<span id="L58" class="LineNr"> 58 </span> <span class="subxComment"># run-tests()</span> +<span id="L59" class="LineNr"> 59 </span> e8/call run-tests/disp32 +<span id="L60" class="LineNr"> 60 </span> <span class="subxComment"># syscall(exit, *Num-test-failures)</span> +<span id="L61" class="LineNr"> 61 </span> 8b/-> *<span class="SpecialChar"><a href='../051test.subx.html#L90'>Num-test-failures</a></span> 3/r32/ebx +<span id="L62" class="LineNr"> 62 </span> eb/jump $main:end/disp8 +<span id="L63" class="LineNr"> 63 </span><span class="Constant">$run-main</span>: +<span id="L64" class="LineNr"> 64 </span> <span class="subxH1Comment"># - otherwise convert stdin</span> +<span id="L65" class="LineNr"> 65 </span> <span class="subxComment"># convert(Stdin, Stdout)</span> +<span id="L66" class="LineNr"> 66 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L67" class="LineNr"> 67 </span> 68/push <span class="SpecialChar"><a href='../064write-byte.subx.html#L10'>Stdout</a></span>/imm32 +<span id="L68" class="LineNr"> 68 </span> 68/push <span class="SpecialChar"><a href='../061read-byte.subx.html#L14'>Stdin</a></span>/imm32 +<span id="L69" class="LineNr"> 69 </span> <span class="subxS2Comment"># . . call</span> +<span id="L70" class="LineNr"> 70 </span> e8/call <a href='calls.subx.html#L79'>convert</a>/disp32 +<span id="L71" class="LineNr"> 71 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L72" class="LineNr"> 72 </span> 81 0/subop/add %esp 8/imm32 +<span id="L73" class="LineNr"> 73 </span> <span class="subxComment"># syscall(exit, 0)</span> +<span id="L74" class="LineNr"> 74 </span> bb/copy-to-ebx 0/imm32 +<span id="L75" class="LineNr"> 75 </span><span class="Constant">$main:end</span>: +<span id="L76" class="LineNr"> 76 </span> b8/copy-to-eax 1/imm32/exit +<span id="L77" class="LineNr"> 77 </span> cd/syscall 0x80/imm8 +<span id="L78" class="LineNr"> 78 </span> +<span id="L79" class="LineNr"> 79 </span><span class="subxFunction">convert</span>: <span class="subxComment"># in : (address buffered-file), out : (address buffered-file) -> <void></span> +<span id="L80" class="LineNr"> 80 </span> <span class="subxComment"># pseudocode:</span> +<span id="L81" class="LineNr"> 81 </span> <span class="subxComment"># var line = new-stream(512, 1)</span> +<span id="L82" class="LineNr"> 82 </span> <span class="subxComment"># var words : (address stream slice) = new-stream(16, 8) # at most function name and 15 args</span> +<span id="L83" class="LineNr"> 83 </span> <span class="subxComment"># while true</span> +<span id="L84" class="LineNr"> 84 </span> <span class="subxComment"># clear-stream(line)</span> +<span id="L85" class="LineNr"> 85 </span> <span class="subxComment"># read-line-buffered(in, line)</span> +<span id="L86" class="LineNr"> 86 </span> <span class="subxComment"># if (line->write == 0) break # end of file</span> +<span id="L87" class="LineNr"> 87 </span> <span class="subxComment"># skip-chars-matching-whitespace(line)</span> +<span id="L88" class="LineNr"> 88 </span> <span class="subxComment"># if line->data[line->read] != '('</span> +<span id="L89" class="LineNr"> 89 </span> <span class="subxComment"># write-stream-data(out, line)</span> +<span id="L90" class="LineNr"> 90 </span> <span class="subxComment"># continue</span> +<span id="L91" class="LineNr"> 91 </span> <span class="subxComment"># # emit comment</span> +<span id="L92" class="LineNr"> 92 </span> <span class="subxComment"># write-buffered(out, "# ")</span> +<span id="L93" class="LineNr"> 93 </span> <span class="subxComment"># write-stream-data(out, line)</span> +<span id="L94" class="LineNr"> 94 </span> <span class="subxComment"># # emit code</span> +<span id="L95" class="LineNr"> 95 </span> <span class="subxComment"># ++line->read # skip '('</span> +<span id="L96" class="LineNr"> 96 </span> <span class="subxComment"># clear-stream(words)</span> +<span id="L97" class="LineNr"> 97 </span> <span class="subxComment"># words = parse-line(line)</span> +<span id="L98" class="LineNr"> 98 </span> <span class="subxComment"># emit-call(out, words)</span> +<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># flush(out)</span> +<span id="L100" class="LineNr">100 </span> <span class="subxComment">#</span> +<span id="L101" class="LineNr">101 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L102" class="LineNr">102 </span> 55/push-ebp +<span id="L103" class="LineNr">103 </span> 89/<- %ebp 4/r32/esp +<span id="L104" class="LineNr">104 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L105" class="LineNr">105 </span> <span class="subxComment"># var line/ecx : (address stream byte) = stream(512)</span> +<span id="L106" class="LineNr">106 </span> 81 5/subop/subtract %esp 0x200/imm32 +<span id="L107" class="LineNr">107 </span> 68/push 0x200/imm32/length +<span id="L108" class="LineNr">108 </span> 68/push 0/imm32/read +<span id="L109" class="LineNr">109 </span> 68/push 0/imm32/write +<span id="L110" class="LineNr">110 </span> 89/<- %ecx 4/r32/esp +<span id="L111" class="LineNr">111 </span> <span class="subxComment"># var words/edx : (address stream slice) = stream(16, 8)</span> +<span id="L112" class="LineNr">112 </span> 81 5/subop/subtract %esp 0x80/imm32 +<span id="L113" class="LineNr">113 </span> 68/push 0x80/imm32/length +<span id="L114" class="LineNr">114 </span> 68/push 0/imm32/read +<span id="L115" class="LineNr">115 </span> 68/push 0/imm32/write +<span id="L116" class="LineNr">116 </span> 89/<- %edx 4/r32/esp +<span id="L117" class="LineNr">117 </span><span class="Constant">$convert:loop</span>: +<span id="L118" class="LineNr">118 </span> <span class="subxComment"># clear-stream(line)</span> +<span id="L119" class="LineNr">119 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L120" class="LineNr">120 </span> 51/push-ecx +<span id="L121" class="LineNr">121 </span> <span class="subxS2Comment"># . . call</span> +<span id="L122" class="LineNr">122 </span> e8/call <a href='../055stream.subx.html#L17'>clear-stream</a>/disp32 +<span id="L123" class="LineNr">123 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L124" class="LineNr">124 </span> 81 0/subop/add %esp 4/imm32 +<span id="L125" class="LineNr">125 </span> <span class="subxComment"># read-line-buffered(in, line)</span> +<span id="L126" class="LineNr">126 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L127" class="LineNr">127 </span> 51/push-ecx +<span id="L128" class="LineNr">128 </span> ff 6/subop/push *(ebp+8) +<span id="L129" class="LineNr">129 </span> <span class="subxS2Comment"># . . call</span> +<span id="L130" class="LineNr">130 </span> e8/call <a href='../071read-line.subx.html#L9'>read-line-buffered</a>/disp32 +<span id="L131" class="LineNr">131 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L132" class="LineNr">132 </span> 81 0/subop/add %esp 8/imm32 +<span id="L133" class="LineNr">133 </span><span class="Constant">$convert:check0</span>: +<span id="L134" class="LineNr">134 </span> <span class="subxComment"># if (line->write == 0) break</span> +<span id="L135" class="LineNr">135 </span> 81 7/subop/compare *ecx 0/imm32 +<span id="L136" class="LineNr">136 </span> 0f 84/jump-if-equal $convert:break/disp32 +<span id="L137" class="LineNr">137 </span> <span class="subxComment"># TODO</span> +<span id="L138" class="LineNr">138 </span> e9/jump $convert:loop/disp32 +<span id="L139" class="LineNr">139 </span><span class="Constant">$convert:break</span>: +<span id="L140" class="LineNr">140 </span> <span class="subxComment"># flush(out)</span> +<span id="L141" class="LineNr">141 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L142" class="LineNr">142 </span> ff 6/subop/push *(ebp+0xc) +<span id="L143" class="LineNr">143 </span> <span class="subxS2Comment"># . . call</span> +<span id="L144" class="LineNr">144 </span> e8/call <a href='../064write-byte.subx.html#L79'>flush</a>/disp32 +<span id="L145" class="LineNr">145 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L146" class="LineNr">146 </span> 81 0/subop/add %esp 4/imm32 +<span id="L147" class="LineNr">147 </span><span class="Constant">$convert:end</span>: +<span id="L148" class="LineNr">148 </span> <span class="subxS1Comment"># . reclaim locals</span> +<span id="L149" class="LineNr">149 </span> 81 0/subop/add %esp 0x298/imm32 <span class="subxComment"># 0x20c + 0x8c</span> +<span id="L150" class="LineNr">150 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L151" class="LineNr">151 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L152" class="LineNr">152 </span> 89/<- %esp 5/r32/ebp +<span id="L153" class="LineNr">153 </span> 5d/pop-to-ebp +<span id="L154" class="LineNr">154 </span> c3/return +<span id="L155" class="LineNr">155 </span> +<span id="L156" class="LineNr">156 </span><span class="subxFunction">parse-line</span>: <span class="subxComment"># line : (address stream byte), words : (address stream slice)</span> +<span id="L157" class="LineNr">157 </span> <span class="subxComment"># pseudocode:</span> +<span id="L158" class="LineNr">158 </span> <span class="subxComment"># var word-slice : (address slice)</span> +<span id="L159" class="LineNr">159 </span> <span class="subxComment"># while true</span> +<span id="L160" class="LineNr">160 </span> <span class="subxComment"># word-slice = next-word-string-or-expression-without-metadata(line)</span> +<span id="L161" class="LineNr">161 </span> <span class="subxComment"># if slice-empty?(word-slice)</span> +<span id="L162" class="LineNr">162 </span> <span class="subxComment"># break # end of line</span> +<span id="L163" class="LineNr">163 </span> <span class="subxComment"># write-int(words, word-slice->start)</span> +<span id="L164" class="LineNr">164 </span> <span class="subxComment"># write-int(words, word-slice->end)</span> +<span id="L165" class="LineNr">165 </span> <span class="subxComment">#</span> +<span id="L166" class="LineNr">166 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L167" class="LineNr">167 </span> 55/push-ebp +<span id="L168" class="LineNr">168 </span> 89/<- %ebp 4/r32/esp +<span id="L169" class="LineNr">169 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L170" class="LineNr">170 </span><span class="Constant">$parse-line:end</span>: +<span id="L171" class="LineNr">171 </span> <span class="subxS1Comment"># . reclaim locals</span> +<span id="L172" class="LineNr">172 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L173" class="LineNr">173 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L174" class="LineNr">174 </span> 89/<- %esp 5/r32/ebp +<span id="L175" class="LineNr">175 </span> 5d/pop-to-ebp +<span id="L176" class="LineNr">176 </span> c3/return +<span id="L177" class="LineNr">177 </span> +<span id="L178" class="LineNr">178 </span><span class="subxFunction">emit-call</span>: <span class="subxComment"># out : (address buffered-file), words : (address stream slice)</span> +<span id="L179" class="LineNr">179 </span> <span class="subxComment"># pseudocode:</span> +<span id="L180" class="LineNr">180 </span> <span class="subxComment"># if (words->write < 8) abort</span> +<span id="L181" class="LineNr">181 </span> <span class="subxComment"># curr = &words->data[words->write-8]</span> +<span id="L182" class="LineNr">182 </span> <span class="subxComment"># min = words->data</span> +<span id="L183" class="LineNr">183 </span> <span class="subxComment"># # emit pushes</span> +<span id="L184" class="LineNr">184 </span> <span class="subxComment"># while true</span> +<span id="L185" class="LineNr">185 </span> <span class="subxComment"># if (curr <= min) break</span> +<span id="L186" class="LineNr">186 </span> <span class="subxComment"># if (*curr == '%' || *curr == '*')</span> +<span id="L187" class="LineNr">187 </span> <span class="subxComment"># write-buffered(out, "ff 6/subop/push ")</span> +<span id="L188" class="LineNr">188 </span> <span class="subxComment"># write-slice-buffered(out, curr)</span> +<span id="L189" class="LineNr">189 </span> <span class="subxComment"># write-buffered(out, "/imm32\n")</span> +<span id="L190" class="LineNr">190 </span> <span class="subxComment"># else</span> +<span id="L191" class="LineNr">191 </span> <span class="subxComment"># write-buffered(out, "68/push ")</span> +<span id="L192" class="LineNr">192 </span> <span class="subxComment"># write-slice-buffered(out, curr)</span> +<span id="L193" class="LineNr">193 </span> <span class="subxComment"># write-buffered(out, "/imm32\n")</span> +<span id="L194" class="LineNr">194 </span> <span class="subxComment"># curr -= 8</span> +<span id="L195" class="LineNr">195 </span> <span class="subxComment"># # emit call</span> +<span id="L196" class="LineNr">196 </span> <span class="subxComment"># write-buffered(out, "e8/call ")</span> +<span id="L197" class="LineNr">197 </span> <span class="subxComment"># write-slice-buffered(out, curr)</span> +<span id="L198" class="LineNr">198 </span> <span class="subxComment"># write-buffered(out, "/disp32\n")</span> +<span id="L199" class="LineNr">199 </span> <span class="subxComment"># # emit pops</span> +<span id="L200" class="LineNr">200 </span> <span class="subxComment"># write-buffered(out, "81 0/subop/add %esp ")</span> +<span id="L201" class="LineNr">201 </span> <span class="subxComment"># print-int32-buffered(out, words->write >> 1 - 4)</span> +<span id="L202" class="LineNr">202 </span> <span class="subxComment"># write-buffered(out, "/imm32\n")</span> +<span id="L203" class="LineNr">203 </span> <span class="subxComment">#</span> +<span id="L204" class="LineNr">204 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L205" class="LineNr">205 </span> 55/push-ebp +<span id="L206" class="LineNr">206 </span> 89/<- %ebp 4/r32/esp +<span id="L207" class="LineNr">207 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L208" class="LineNr">208 </span><span class="Constant">$emit-call:end</span>: +<span id="L209" class="LineNr">209 </span> <span class="subxS1Comment"># . reclaim locals</span> +<span id="L210" class="LineNr">210 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L211" class="LineNr">211 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L212" class="LineNr">212 </span> 89/<- %esp 5/r32/ebp +<span id="L213" class="LineNr">213 </span> 5d/pop-to-ebp +<span id="L214" class="LineNr">214 </span> c3/return +<span id="L215" class="LineNr">215 </span> +<span id="L216" class="LineNr">216 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |