diff options
Diffstat (limited to 'html')
| -rw-r--r-- | html/subx/033non_code_segment.cc.html | 95 | ||||
| -rw-r--r-- | html/subx/034discourage_raw_hex.cc.html | 102 | ||||
| -rw-r--r-- | html/subx/035labels.cc.html | 464 | ||||
| -rw-r--r-- | html/subx/036recommend_labels.cc.html | 145 | ||||
| -rw-r--r-- | html/subx/037label_types.cc.html | 110 | ||||
| -rw-r--r-- | html/subx/038check_local_jumps.cc.html | 125 | ||||
| -rw-r--r-- | html/subx/ex2.subx.html | 2 | ||||
| -rw-r--r-- | html/subx/ex3.subx.html | 6 | ||||
| -rw-r--r-- | html/subx/ex6.subx.html | 2 | ||||
| -rw-r--r-- | html/subx/ex8.subx.html | 2 |
10 files changed, 240 insertions, 813 deletions
diff --git a/html/subx/033non_code_segment.cc.html b/html/subx/033non_code_segment.cc.html deleted file mode 100644 index f5935cd6..00000000 --- a/html/subx/033non_code_segment.cc.html +++ /dev/null @@ -1,95 +0,0 @@ -<!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 - subx/033non_code_segment.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } -a { color:#eeeeee; text-decoration: none; } -a:hover { text-decoration: underline; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Special { color: #c00000; } -.Comment { color: #9090ff; } -.Comment a { color:#0000ee; text-decoration:underline; } -.Delimiter { color: #800080; } -.LineNr { color: #444444; } -.Identifier { color: #c0a020; } -.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; } -.traceContains { color: #008000; } -.cSpecial { color: #008000; } ---> -</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; - } - 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();'> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Raise an error when operand metadata is used in non-code segments.</span> -<span id="L2" class="LineNr"> 2 </span> -<span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenario operand_metadata_outside_code_segment)</span> -<span id="L4" class="LineNr"> 4 </span><span class="Special">% Hide_errors = true;</span> -<span id="L5" class="LineNr"> 5 </span>== <span class="Constant">0x1</span> <span class="Comment"># code segment</span> -<span id="L6" class="LineNr"> 6 </span>cd <span class="Constant">0x80</span>/imm8 -<span id="L7" class="LineNr"> 7 </span>== <span class="Constant">0x1000</span> <span class="Comment"># data segment</span> -<span id="L8" class="LineNr"> 8 </span>cd <span class="Constant">12</span>/imm8 -<span id="L9" class="LineNr"> 9 </span><span class="traceContains">+error: 12/imm8: metadata imm8 is only allowed in the (first) code segment</span> -<span id="L10" class="LineNr">10 </span> -<span id="L11" class="LineNr">11 </span><span class="Delimiter">:(before "Pack Operands(segment code)")</span> -<span id="L12" class="LineNr">12 </span><a href='033non_code_segment.cc.html#L15'>ensure_operands_only_in_code_segments</a><span class="Delimiter">(</span>p<span class="Delimiter">);</span> -<span id="L13" class="LineNr">13 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L14" class="LineNr">14 </span><span class="Delimiter">:(code)</span> -<span id="L15" class="LineNr">15 </span><span class="Normal">void</span> <a href='033non_code_segment.cc.html#L15'>ensure_operands_only_in_code_segments</a><span class="Delimiter">(</span><span class="Normal">const</span> program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L16" class="LineNr">16 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- ensure operands only in code segments"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L17" class="LineNr">17 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L18" class="LineNr">18 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip code segment</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L19" class="LineNr">19 </span> <span class="Normal">const</span> segment& seg = p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L20" class="LineNr">20 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>seg<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L21" class="LineNr">21 </span> <span class="Normal">const</span> line& l = seg<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> -<span id="L22" class="LineNr">22 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> k = <span class="Constant">0</span><span class="Delimiter">;</span> k < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>l<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++k<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L23" class="LineNr">23 </span> <span class="Normal">const</span> word& w = l<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>k<span class="Delimiter">);</span> -<span id="L24" class="LineNr">24 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>::iterator p = <a href='032check_operand_bounds.cc.html#L10'>Operand_bound</a><span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != <a href='032check_operand_bounds.cc.html#L10'>Operand_bound</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> -<span id="L25" class="LineNr">25 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>w<span class="Delimiter">,</span> p<span class="Delimiter">-></span>first<span class="Delimiter">))</span> -<span id="L26" class="LineNr">26 </span> <a href='003trace.cc.html#L203'>raise</a> << w<span class="Delimiter">.</span>original << <span class="Constant">": metadata "</span> << p<span class="Delimiter">-></span>first << <span class="Constant">" is only allowed in the (first) code segment</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L27" class="LineNr">27 </span> <span class="Delimiter">}</span> -<span id="L28" class="LineNr">28 </span> <span class="Delimiter">}</span> -<span id="L29" class="LineNr">29 </span> <span class="Delimiter">}</span> -<span id="L30" class="LineNr">30 </span><span class="Delimiter">}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> diff --git a/html/subx/034discourage_raw_hex.cc.html b/html/subx/034discourage_raw_hex.cc.html deleted file mode 100644 index a6a414af..00000000 --- a/html/subx/034discourage_raw_hex.cc.html +++ /dev/null @@ -1,102 +0,0 @@ -<!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 - subx/034discourage_raw_hex.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } -a { color:#eeeeee; text-decoration: none; } -a:hover { text-decoration: underline; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Comment { color: #9090ff; } -.Comment a { color:#0000ee; text-decoration:underline; } -.Delimiter { color: #800080; } -.LineNr { color: #444444; } -.Identifier { color: #c0a020; } -.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; } -.PreProc { color: #800080; } -.traceContains { color: #008000; } -.traceAbsent { color: #c00000; } -.cSpecial { color: #008000; } ---> -</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; - } - 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();'> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Now that we have operand metadata, start warning on instructions that</span> -<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: don't use it.</span> -<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span> -<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: While SubX will let you write raw machine code, don't do that unless you</span> -<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: have a very good reason.</span> -<span id="L6" class="LineNr"> 6 </span> -<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before "Pack Operands(segment code)")</span> -<span id="L8" class="LineNr"> 8 </span><a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span>code<span class="Delimiter">);</span> -<span id="L9" class="LineNr"> 9 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(code)</span> -<span id="L11" class="LineNr">11 </span><span class="Normal">void</span> <a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L12" class="LineNr">12 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- <a href='003trace.cc.html#L204'>warn</a> on raw hex instructions"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L13" class="LineNr">13 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L14" class="LineNr">14 </span> <span class="Normal">const</span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L15" class="LineNr">15 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>all_hex_bytes<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> && <a href='031check_operands.cc.html#L272'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L16" class="LineNr">16 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': using raw hex is not recommended</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L17" class="LineNr">17 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> -<span id="L18" class="LineNr">18 </span> <span class="Delimiter">}</span> -<span id="L19" class="LineNr">19 </span> <span class="Delimiter">}</span> -<span id="L20" class="LineNr">20 </span><span class="Delimiter">}</span> -<span id="L21" class="LineNr">21 </span> -<span id="L22" class="LineNr">22 </span><span class="Delimiter">:(scenarios transform)</span> -<span id="L23" class="LineNr">23 </span><span class="Delimiter">:(scenario warn_on_hex_bytes_without_operands)</span> -<span id="L24" class="LineNr">24 </span>== <span class="Constant">0x1</span> -<span id="L25" class="LineNr">25 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># copy 0x2a (42) to EBX</span> -<span id="L26" class="LineNr">26 </span><span class="traceContains">+warn: 'bb 2a 00 00 00': using raw hex is not recommended</span> -<span id="L27" class="LineNr">27 </span> -<span id="L28" class="LineNr">28 </span><span class="Delimiter">:(scenario warn_on_non_operand_metadata)</span> -<span id="L29" class="LineNr">29 </span>== <span class="Constant">0x1</span> -<span id="L30" class="LineNr">30 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span>/foo <span class="PreProc">0</span><span class="Constant">0</span>/bar <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># copy 0x2a (42) to EBX</span> -<span id="L31" class="LineNr">31 </span><span class="traceContains">+warn: 'bb 2a 00/foo 00/bar 00': using raw hex is not recommended</span> -<span id="L32" class="LineNr">32 </span> -<span id="L33" class="LineNr">33 </span><span class="Delimiter">:(scenario no_warn_on_instructions_without_operands)</span> -<span id="L34" class="LineNr">34 </span>== <span class="Constant">0x1</span> -<span id="L35" class="LineNr">35 </span><span class="Constant">55</span> <span class="Comment"># push EBP</span> -<span id="L36" class="LineNr">36 </span><span class="traceAbsent">-warn: '55': using raw hex is not recommended</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> diff --git a/html/subx/035labels.cc.html b/html/subx/035labels.cc.html index 107c41bc..a3c9f4ca 100644 --- a/html/subx/035labels.cc.html +++ b/html/subx/035labels.cc.html @@ -62,242 +62,246 @@ if ('onhashchange' in window) { <pre id='vimCodeElement'> <span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Labels are defined by ending names with a ':'. This layer will compute</span> <span id="L2" class="LineNr"> 2 </span><span class="Comment">//: addresses for labels, and compute the offset for instructions using them.</span> -<span id="L3" class="LineNr"> 3 </span> -<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: We're introducing non-number names for the first time, so it's worth</span> -<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: laying down some ground rules all transforms will follow, so things don't</span> -<span id="L6" class="LineNr"> 6 </span><span class="Comment">//: get too confusing:</span> -<span id="L7" class="LineNr"> 7 </span><span class="Comment">//: - if it starts with a digit, it's treated as a number. If it can't be</span> -<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: parsed as hex it will raise an error.</span> -<span id="L9" class="LineNr"> 9 </span><span class="Comment">//: - if it starts with '-' it's treated as a number.</span> -<span id="L10" class="LineNr"> 10 </span><span class="Comment">//: - if it starts with '0x' it's treated as a number.</span> -<span id="L11" class="LineNr"> 11 </span><span class="Comment">//: - if it's two characters long, it can't be a name. Either it's a hex</span> -<span id="L12" class="LineNr"> 12 </span><span class="Comment">//: byte, or it raises an error.</span> -<span id="L13" class="LineNr"> 13 </span><span class="Comment">//: That's it. Names can start with any non-digit that isn't a dash. They can</span> -<span id="L14" class="LineNr"> 14 </span><span class="Comment">//: be a single character long. 'a' is not a hex number, it's a variable.</span> -<span id="L15" class="LineNr"> 15 </span><span class="Comment">//: Later layers may add more conventions partitioning the space of names. But</span> -<span id="L16" class="LineNr"> 16 </span><span class="Comment">//: the above rules will remain inviolate.</span> -<span id="L17" class="LineNr"> 17 </span><span class="Normal">bool</span> <a href='035labels.cc.html#L17'>is_number</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L18" class="LineNr"> 18 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'-'</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> -<span id="L19" class="LineNr"> 19 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> -<span id="L20" class="LineNr"> 20 </span> <span class="Identifier">return</span> <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>s<span class="Delimiter">)</span> == <span class="Constant">2</span><span class="Delimiter">;</span> -<span id="L21" class="LineNr"> 21 </span><span class="Delimiter">}</span> -<span id="L22" class="LineNr"> 22 </span><span class="Delimiter">:(before "End Unit Tests")</span> -<span id="L23" class="LineNr"> 23 </span><span class="Normal">void</span> <a href='035labels.cc.html#L23'>test_is_number</a><span class="Delimiter">()</span> <span class="Delimiter">{</span> -<span id="L24" class="LineNr"> 24 </span> <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>!is_number<span class="Delimiter">(</span><span class="Constant">"a"</span><span class="Delimiter">));</span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: We won't check this, but our convention will be that jump targets will</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: start with a '$', while functions will not. Function names will never be</span> +<span id="L6" class="LineNr"> 6 </span><span class="Comment">//: jumped to, and jump targets will never be called.</span> +<span id="L7" class="LineNr"> 7 </span> +<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: We're introducing non-number names for the first time, so it's worth</span> +<span id="L9" class="LineNr"> 9 </span><span class="Comment">//: laying down some ground rules all transforms will follow, so things don't</span> +<span id="L10" class="LineNr"> 10 </span><span class="Comment">//: get too confusing:</span> +<span id="L11" class="LineNr"> 11 </span><span class="Comment">//: - if it starts with a digit, it's treated as a number. If it can't be</span> +<span id="L12" class="LineNr"> 12 </span><span class="Comment">//: parsed as hex it will raise an error.</span> +<span id="L13" class="LineNr"> 13 </span><span class="Comment">//: - if it starts with '-' it's treated as a number.</span> +<span id="L14" class="LineNr"> 14 </span><span class="Comment">//: - if it starts with '0x' it's treated as a number.</span> +<span id="L15" class="LineNr"> 15 </span><span class="Comment">//: - if it's two characters long, it can't be a name. Either it's a hex</span> +<span id="L16" class="LineNr"> 16 </span><span class="Comment">//: byte, or it raises an error.</span> +<span id="L17" class="LineNr"> 17 </span><span class="Comment">//: That's it. Names can start with any non-digit that isn't a dash. They can</span> +<span id="L18" class="LineNr"> 18 </span><span class="Comment">//: be a single character long. 'a' is not a hex number, it's a variable.</span> +<span id="L19" class="LineNr"> 19 </span><span class="Comment">//: Later layers may add more conventions partitioning the space of names. But</span> +<span id="L20" class="LineNr"> 20 </span><span class="Comment">//: the above rules will remain inviolate.</span> +<span id="L21" class="LineNr"> 21 </span><span class="Normal">bool</span> <a href='035labels.cc.html#L21'>is_number</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L22" class="LineNr"> 22 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'-'</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> +<span id="L23" class="LineNr"> 23 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> +<span id="L24" class="LineNr"> 24 </span> <span class="Identifier">return</span> <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>s<span class="Delimiter">)</span> == <span class="Constant">2</span><span class="Delimiter">;</span> <span id="L25" class="LineNr"> 25 </span><span class="Delimiter">}</span> -<span id="L26" class="LineNr"> 26 </span><span class="Delimiter">:(code)</span> -<span id="L27" class="LineNr"> 27 </span><span class="Normal">void</span> <a href='035labels.cc.html#L27'>check_valid_name</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L28" class="LineNr"> 28 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span> -<span id="L29" class="LineNr"> 29 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"empty name!</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L30" class="LineNr"> 30 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L31" class="LineNr"> 31 </span> <span class="Delimiter">}</span> -<span id="L32" class="LineNr"> 32 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'-'</span><span class="Delimiter">)</span> -<span id="L33" class="LineNr"> 33 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' starts with '-', which can be confused with a negative number; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L34" class="LineNr"> 34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>substr<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">)</span> == <span class="Constant">"0x"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L35" class="LineNr"> 35 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' looks like a hex number; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L36" class="LineNr"> 36 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span> -<span id="L38" class="LineNr"> 38 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> -<span id="L39" class="LineNr"> 39 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' starts with a digit, and so can be confused with a negative number; use a different name.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L40" class="LineNr"> 40 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>s<span class="Delimiter">)</span> == <span class="Constant">2</span><span class="Delimiter">)</span> -<span id="L41" class="LineNr"> 41 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' is two characters long which can look like raw hex bytes at a glance; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L42" class="LineNr"> 42 </span><span class="Delimiter">}</span> -<span id="L43" class="LineNr"> 43 </span> -<span id="L44" class="LineNr"> 44 </span><span class="Delimiter">:(scenarios transform)</span> -<span id="L45" class="LineNr"> 45 </span><span class="Delimiter">:(scenario map_label)</span> -<span id="L46" class="LineNr"> 46 </span>== <span class="Constant">0x1</span> -<span id="L47" class="LineNr"> 47 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L48" class="LineNr"> 48 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> -<span id="L49" class="LineNr"> 49 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L50" class="LineNr"> 50 </span><span class="Normal">loop</span>: -<span id="L51" class="LineNr"> 51 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> -<span id="L52" class="LineNr"> 52 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> 'loop' is at address 1</span> -<span id="L53" class="LineNr"> 53 </span> -<span id="L54" class="LineNr"> 54 </span><span class="Delimiter">:(before "End Level-2 Transforms")</span> -<span id="L55" class="LineNr"> 55 </span><a href='011run.cc.html#L184'>Transform</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='035labels.cc.html#L57'>rewrite_labels</a><span class="Delimiter">);</span> -<span id="L56" class="LineNr"> 56 </span><span class="Delimiter">:(code)</span> -<span id="L57" class="LineNr"> 57 </span><span class="Normal">void</span> <a href='035labels.cc.html#L57'>rewrite_labels</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L58" class="LineNr"> 58 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- rewrite labels"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L59" class="LineNr"> 59 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L60" class="LineNr"> 60 </span> segment& code = p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> -<span id="L61" class="LineNr"> 61 </span> <span class="Comment">// Rewrite Labels(segment code)</span> -<span id="L62" class="LineNr"> 62 </span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>> address<span class="Delimiter">;</span> <span class="Comment">// values are unsigned, but we're going to do subtractions on them so they need to fit in 31 bits</span> -<span id="L63" class="LineNr"> 63 </span> <a href='035labels.cc.html#L70'>compute_addresses_for_labels</a><span class="Delimiter">(</span>code<span class="Delimiter">,</span> address<span class="Delimiter">);</span> -<span id="L64" class="LineNr"> 64 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L65" class="LineNr"> 65 </span> <a href='035labels.cc.html#L107'>drop_labels</a><span class="Delimiter">(</span>code<span class="Delimiter">);</span> -<span id="L66" class="LineNr"> 66 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L67" class="LineNr"> 67 </span> <a href='035labels.cc.html#L119'>replace_labels_with_addresses</a><span class="Delimiter">(</span>code<span class="Delimiter">,</span> address<span class="Delimiter">);</span> -<span id="L68" class="LineNr"> 68 </span><span class="Delimiter">}</span> -<span id="L69" class="LineNr"> 69 </span> -<span id="L70" class="LineNr"> 70 </span><span class="Normal">void</span> <a href='035labels.cc.html#L70'>compute_addresses_for_labels</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L71" class="LineNr"> 71 </span> <span class="Normal">int</span> current_byte = <span class="Constant">0</span><span class="Delimiter">;</span> -<span id="L72" class="LineNr"> 72 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L73" class="LineNr"> 73 </span> <span class="Normal">const</span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L74" class="LineNr"> 74 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L75" class="LineNr"> 75 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> -<span id="L76" class="LineNr"> 76 </span> <span class="Comment">// hack: if we have any operand metadata left after previous transforms,</span> -<span id="L77" class="LineNr"> 77 </span> <span class="Comment">// deduce its size</span> -<span id="L78" class="LineNr"> 78 </span> <span class="Comment">// Maybe we should just move this transform to before instruction</span> -<span id="L79" class="LineNr"> 79 </span> <span class="Comment">// packing, and deduce the size of *all* operands. But then we'll also</span> -<span id="L80" class="LineNr"> 80 </span> <span class="Comment">// have to deal with bitfields.</span> -<span id="L81" class="LineNr"> 81 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L82" class="LineNr"> 82 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">)</span> -<span id="L83" class="LineNr"> 83 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': don't use ':' when jumping to labels</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> -<span id="L84" class="LineNr"> 84 </span> current_byte += <span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L85" class="LineNr"> 85 </span> <span class="Delimiter">}</span> -<span id="L86" class="LineNr"> 86 </span> <span class="Comment">// automatically handle /disp8 and /imm8 here</span> -<span id="L87" class="LineNr"> 87 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> != <span class="Constant">':'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L88" class="LineNr"> 88 </span> ++current_byte<span class="Delimiter">;</span> +<span id="L26" class="LineNr"> 26 </span><span class="Delimiter">:(before "End Unit Tests")</span> +<span id="L27" class="LineNr"> 27 </span><span class="Normal">void</span> <a href='035labels.cc.html#L27'>test_is_number</a><span class="Delimiter">()</span> <span class="Delimiter">{</span> +<span id="L28" class="LineNr"> 28 </span> <a href='002test.cc.html#L24'>CHECK</a><span class="Delimiter">(</span>!is_number<span class="Delimiter">(</span><span class="Constant">"a"</span><span class="Delimiter">));</span> +<span id="L29" class="LineNr"> 29 </span><span class="Delimiter">}</span> +<span id="L30" class="LineNr"> 30 </span><span class="Delimiter">:(code)</span> +<span id="L31" class="LineNr"> 31 </span><span class="Normal">void</span> <a href='035labels.cc.html#L31'>check_valid_name</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L32" class="LineNr"> 32 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span> +<span id="L33" class="LineNr"> 33 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"empty name!</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L34" class="LineNr"> 34 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L35" class="LineNr"> 35 </span> <span class="Delimiter">}</span> +<span id="L36" class="LineNr"> 36 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'-'</span><span class="Delimiter">)</span> +<span id="L37" class="LineNr"> 37 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' starts with '-', which can be confused with a negative number; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L38" class="LineNr"> 38 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">.</span>substr<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">)</span> == <span class="Constant">"0x"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L39" class="LineNr"> 39 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' looks like a hex number; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L40" class="LineNr"> 40 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L41" class="LineNr"> 41 </span> <span class="Delimiter">}</span> +<span id="L42" class="LineNr"> 42 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isdigit<span class="Delimiter">(</span>s<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> +<span id="L43" class="LineNr"> 43 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' starts with a digit, and so can be confused with a negative number; use a different name.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L44" class="LineNr"> 44 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>s<span class="Delimiter">)</span> == <span class="Constant">2</span><span class="Delimiter">)</span> +<span id="L45" class="LineNr"> 45 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << s << <span class="Constant">"' is two characters long which can look like raw hex bytes at a glance; use a different <a href='010---vm.cc.html#L228'>name</a></span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L46" class="LineNr"> 46 </span><span class="Delimiter">}</span> +<span id="L47" class="LineNr"> 47 </span> +<span id="L48" class="LineNr"> 48 </span><span class="Delimiter">:(scenarios transform)</span> +<span id="L49" class="LineNr"> 49 </span><span class="Delimiter">:(scenario map_label)</span> +<span id="L50" class="LineNr"> 50 </span>== <span class="Constant">0x1</span> +<span id="L51" class="LineNr"> 51 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L52" class="LineNr"> 52 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L53" class="LineNr"> 53 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L54" class="LineNr"> 54 </span><span class="Normal">loop</span>: +<span id="L55" class="LineNr"> 55 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> +<span id="L56" class="LineNr"> 56 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> 'loop' is at address 1</span> +<span id="L57" class="LineNr"> 57 </span> +<span id="L58" class="LineNr"> 58 </span><span class="Delimiter">:(before "End Level-2 Transforms")</span> +<span id="L59" class="LineNr"> 59 </span><a href='011run.cc.html#L184'>Transform</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='035labels.cc.html#L61'>rewrite_labels</a><span class="Delimiter">);</span> +<span id="L60" class="LineNr"> 60 </span><span class="Delimiter">:(code)</span> +<span id="L61" class="LineNr"> 61 </span><span class="Normal">void</span> <a href='035labels.cc.html#L61'>rewrite_labels</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L62" class="LineNr"> 62 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- rewrite labels"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L63" class="LineNr"> 63 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L64" class="LineNr"> 64 </span> segment& <a href='031check_operands.cc.html#L14'>code</a> = p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> +<span id="L65" class="LineNr"> 65 </span> <span class="Comment">// Rewrite Labels(segment code)</span> +<span id="L66" class="LineNr"> 66 </span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>> address<span class="Delimiter">;</span> <span class="Comment">// values are unsigned, but we're going to do subtractions on them so they need to fit in 31 bits</span> +<span id="L67" class="LineNr"> 67 </span> <a href='035labels.cc.html#L74'>compute_addresses_for_labels</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">,</span> address<span class="Delimiter">);</span> +<span id="L68" class="LineNr"> 68 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L69" class="LineNr"> 69 </span> <a href='035labels.cc.html#L111'>drop_labels</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">);</span> +<span id="L70" class="LineNr"> 70 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L71" class="LineNr"> 71 </span> <a href='035labels.cc.html#L123'>replace_labels_with_addresses</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">,</span> address<span class="Delimiter">);</span> +<span id="L72" class="LineNr"> 72 </span><span class="Delimiter">}</span> +<span id="L73" class="LineNr"> 73 </span> +<span id="L74" class="LineNr"> 74 </span><span class="Normal">void</span> <a href='035labels.cc.html#L74'>compute_addresses_for_labels</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L75" class="LineNr"> 75 </span> <span class="Normal">int</span> current_byte = <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L76" class="LineNr"> 76 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L77" class="LineNr"> 77 </span> <span class="Normal">const</span> line& inst = <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> +<span id="L78" class="LineNr"> 78 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L79" class="LineNr"> 79 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> +<span id="L80" class="LineNr"> 80 </span> <span class="Comment">// hack: if we have any operand metadata left after previous transforms,</span> +<span id="L81" class="LineNr"> 81 </span> <span class="Comment">// deduce its size</span> +<span id="L82" class="LineNr"> 82 </span> <span class="Comment">// Maybe we should just move this transform to before instruction</span> +<span id="L83" class="LineNr"> 83 </span> <span class="Comment">// packing, and deduce the size of *all* operands. But then we'll also</span> +<span id="L84" class="LineNr"> 84 </span> <span class="Comment">// have to deal with bitfields.</span> +<span id="L85" class="LineNr"> 85 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L86" class="LineNr"> 86 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">)</span> +<span id="L87" class="LineNr"> 87 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': don't use ':' when jumping to labels</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> +<span id="L88" class="LineNr"> 88 </span> current_byte += <span class="Constant">4</span><span class="Delimiter">;</span> <span id="L89" class="LineNr"> 89 </span> <span class="Delimiter">}</span> -<span id="L90" class="LineNr"> 90 </span> <span class="Normal">else</span> <span class="Delimiter">{</span> -<span id="L91" class="LineNr"> 91 </span> string <a href='003trace.cc.html#L73'>label</a> = <a href='035labels.cc.html#L176'>drop_last</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">);</span> -<span id="L92" class="LineNr"> 92 </span> <span class="Comment">// ensure labels look sufficiently different from raw hex</span> -<span id="L93" class="LineNr"> 93 </span> <a href='035labels.cc.html#L27'>check_valid_name</a><span class="Delimiter">(</span><a href='003trace.cc.html#L73'>label</a><span class="Delimiter">);</span> -<span id="L94" class="LineNr"> 94 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L95" class="LineNr"> 95 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L381'>contains_any_operand_metadata</a><span class="Delimiter">(</span>curr<span class="Delimiter">))</span> -<span id="L96" class="LineNr"> 96 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> definition (':') not allowed in operand</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L97" class="LineNr"> 97 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>j > <span class="Constant">0</span><span class="Delimiter">)</span> -<span id="L98" class="LineNr"> 98 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': labels can only be the first <a href='011run.cc.html#L116'>word</a> in a line.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L99" class="LineNr"> 99 </span> <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> <a href='003trace.cc.html#L73'>label</a><span class="Delimiter">,</span> current_byte<span class="Delimiter">);</span> -<span id="L100" class="LineNr">100 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"label '"</span> << label << <span class="Constant">"' is at address "</span> << <span class="Delimiter">(</span>current_byte+code<span class="Delimiter">.</span><a href='011run.cc.html#L105'>start</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L101" class="LineNr">101 </span> <span class="Comment">// no modifying current_byte; label definitions won't be in the final binary</span> -<span id="L102" class="LineNr">102 </span> <span class="Delimiter">}</span> -<span id="L103" class="LineNr">103 </span> <span class="Delimiter">}</span> -<span id="L104" class="LineNr">104 </span> <span class="Delimiter">}</span> -<span id="L105" class="LineNr">105 </span><span class="Delimiter">}</span> -<span id="L106" class="LineNr">106 </span> -<span id="L107" class="LineNr">107 </span><span class="Normal">void</span> <a href='035labels.cc.html#L107'>drop_labels</a><span class="Delimiter">(</span>segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L108" class="LineNr">108 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L109" class="LineNr">109 </span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L110" class="LineNr">110 </span> vector<word>::iterator new_end = remove_if<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">(),</span> <a href='035labels.cc.html#L115'>is_label</a><span class="Delimiter">);</span> -<span id="L111" class="LineNr">111 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>erase<span class="Delimiter">(</span>new_end<span class="Delimiter">,</span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">());</span> -<span id="L112" class="LineNr">112 </span> <span class="Delimiter">}</span> -<span id="L113" class="LineNr">113 </span><span class="Delimiter">}</span> -<span id="L114" class="LineNr">114 </span> -<span id="L115" class="LineNr">115 </span><span class="Normal">bool</span> <a href='035labels.cc.html#L115'>is_label</a><span class="Delimiter">(</span><span class="Normal">const</span> word& w<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L116" class="LineNr">116 </span> <span class="Identifier">return</span> *w<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">;</span> +<span id="L90" class="LineNr"> 90 </span> <span class="Comment">// automatically handle /disp8 and /imm8 here</span> +<span id="L91" class="LineNr"> 91 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> != <span class="Constant">':'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L92" class="LineNr"> 92 </span> ++current_byte<span class="Delimiter">;</span> +<span id="L93" class="LineNr"> 93 </span> <span class="Delimiter">}</span> +<span id="L94" class="LineNr"> 94 </span> <span class="Normal">else</span> <span class="Delimiter">{</span> +<span id="L95" class="LineNr"> 95 </span> string <a href='003trace.cc.html#L73'>label</a> = <a href='035labels.cc.html#L180'>drop_last</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">);</span> +<span id="L96" class="LineNr"> 96 </span> <span class="Comment">// ensure labels look sufficiently different from raw hex</span> +<span id="L97" class="LineNr"> 97 </span> <a href='035labels.cc.html#L31'>check_valid_name</a><span class="Delimiter">(</span><a href='003trace.cc.html#L73'>label</a><span class="Delimiter">);</span> +<span id="L98" class="LineNr"> 98 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L99" class="LineNr"> 99 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L381'>contains_any_operand_metadata</a><span class="Delimiter">(</span>curr<span class="Delimiter">))</span> +<span id="L100" class="LineNr">100 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> definition (':') not allowed in operand</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L101" class="LineNr">101 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>j > <span class="Constant">0</span><span class="Delimiter">)</span> +<span id="L102" class="LineNr">102 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': labels can only be the first <a href='011run.cc.html#L116'>word</a> in a line.</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L103" class="LineNr">103 </span> <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> <a href='003trace.cc.html#L73'>label</a><span class="Delimiter">,</span> current_byte<span class="Delimiter">);</span> +<span id="L104" class="LineNr">104 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"label '"</span> << label << <span class="Constant">"' is at address "</span> << <span class="Delimiter">(</span>current_byte+code<span class="Delimiter">.</span><a href='011run.cc.html#L105'>start</a><span class="Delimiter">)</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L105" class="LineNr">105 </span> <span class="Comment">// no modifying current_byte; label definitions won't be in the final binary</span> +<span id="L106" class="LineNr">106 </span> <span class="Delimiter">}</span> +<span id="L107" class="LineNr">107 </span> <span class="Delimiter">}</span> +<span id="L108" class="LineNr">108 </span> <span class="Delimiter">}</span> +<span id="L109" class="LineNr">109 </span><span class="Delimiter">}</span> +<span id="L110" class="LineNr">110 </span> +<span id="L111" class="LineNr">111 </span><span class="Normal">void</span> <a href='035labels.cc.html#L111'>drop_labels</a><span class="Delimiter">(</span>segment& <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L112" class="LineNr">112 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L113" class="LineNr">113 </span> line& inst = <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> +<span id="L114" class="LineNr">114 </span> vector<word>::iterator new_end = remove_if<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">(),</span> <a href='035labels.cc.html#L119'>is_label</a><span class="Delimiter">);</span> +<span id="L115" class="LineNr">115 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>erase<span class="Delimiter">(</span>new_end<span class="Delimiter">,</span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">());</span> +<span id="L116" class="LineNr">116 </span> <span class="Delimiter">}</span> <span id="L117" class="LineNr">117 </span><span class="Delimiter">}</span> <span id="L118" class="LineNr">118 </span> -<span id="L119" class="LineNr">119 </span><span class="Normal">void</span> <a href='035labels.cc.html#L119'>replace_labels_with_addresses</a><span class="Delimiter">(</span>segment& code<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L120" class="LineNr">120 </span> <span class="Normal">int32_t</span> byte_next_instruction_starts_at = <span class="Constant">0</span><span class="Delimiter">;</span> -<span id="L121" class="LineNr">121 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L122" class="LineNr">122 </span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L123" class="LineNr">123 </span> byte_next_instruction_starts_at += <a href='035labels.cc.html#L155'>num_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> -<span id="L124" class="LineNr">124 </span> <a href='011run.cc.html#L110'>line</a> new_inst<span class="Delimiter">;</span> -<span id="L125" class="LineNr">125 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L126" class="LineNr">126 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> -<span id="L127" class="LineNr">127 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L247'>contains_key</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L128" class="LineNr">128 </span> <span class="Normal">int32_t</span> offset = <span class="Normal">static_cast</span><<span class="Normal">int32_t</span>><span class="Delimiter">(</span>get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> - byte_next_instruction_starts_at<span class="Delimiter">;</span> -<span id="L129" class="LineNr">129 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp8"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm8"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L130" class="LineNr">130 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>offset > <span class="Constant">0xff</span> || offset < -<span class="Constant">0x7f</span><span class="Delimiter">)</span> -<span id="L131" class="LineNr">131 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> too far away for distance "</span> << std::hex << offset << <span class="Constant">" to fit in 8 bits</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L132" class="LineNr">132 </span> <span class="Normal">else</span> -<span id="L133" class="LineNr">133 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span> -<span id="L134" class="LineNr">134 </span> <span class="Delimiter">}</span> -<span id="L135" class="LineNr">135 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp16"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L136" class="LineNr">136 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>offset > <span class="Constant">0xffff</span> || offset < -<span class="Constant">0x7fff</span><span class="Delimiter">)</span> -<span id="L137" class="LineNr">137 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> too far away for distance "</span> << std::hex << offset << <span class="Constant">" to fit in 16 bits</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L138" class="LineNr">138 </span> <span class="Normal">else</span> -<span id="L139" class="LineNr">139 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">);</span> -<span id="L140" class="LineNr">140 </span> <span class="Delimiter">}</span> -<span id="L141" class="LineNr">141 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L142" class="LineNr">142 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span> -<span id="L143" class="LineNr">143 </span> <span class="Delimiter">}</span> -<span id="L144" class="LineNr">144 </span> <span class="Delimiter">}</span> -<span id="L145" class="LineNr">145 </span> <span class="Normal">else</span> <span class="Delimiter">{</span> -<span id="L146" class="LineNr">146 </span> new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span> -<span id="L147" class="LineNr">147 </span> <span class="Delimiter">}</span> -<span id="L148" class="LineNr">148 </span> <span class="Delimiter">}</span> -<span id="L149" class="LineNr">149 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> -<span id="L150" class="LineNr">150 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction after <a href='011run.cc.html#L186'>transform</a>: '"</span> << data_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L151" class="LineNr">151 </span> <span class="Delimiter">}</span> -<span id="L152" class="LineNr">152 </span><span class="Delimiter">}</span> -<span id="L153" class="LineNr">153 </span> -<span id="L154" class="LineNr">154 </span><span class="Comment">// Assumes all bitfields are packed.</span> -<span id="L155" class="LineNr">155 </span><span class="Normal">uint32_t</span> <a href='035labels.cc.html#L155'>num_bytes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L156" class="LineNr">156 </span> <span class="Normal">uint32_t</span> sum = <span class="Constant">0</span><span class="Delimiter">;</span> -<span id="L157" class="LineNr">157 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L158" class="LineNr">158 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L159" class="LineNr">159 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Comment">// only multi-byte operands</span> -<span id="L160" class="LineNr">160 </span> sum += <span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L161" class="LineNr">161 </span> <span class="Normal">else</span> -<span id="L162" class="LineNr">162 </span> sum++<span class="Delimiter">;</span> -<span id="L163" class="LineNr">163 </span> <span class="Delimiter">}</span> -<span id="L164" class="LineNr">164 </span> <span class="Identifier">return</span> sum<span class="Delimiter">;</span> -<span id="L165" class="LineNr">165 </span><span class="Delimiter">}</span> -<span id="L166" class="LineNr">166 </span> -<span id="L167" class="LineNr">167 </span>string <a href='035labels.cc.html#L167'>data_to_string</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L168" class="LineNr">168 </span> ostringstream out<span class="Delimiter">;</span> -<span id="L169" class="LineNr">169 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L170" class="LineNr">170 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span> -<span id="L171" class="LineNr">171 </span> out << inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> -<span id="L172" class="LineNr">172 </span> <span class="Delimiter">}</span> -<span id="L173" class="LineNr">173 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span> -<span id="L174" class="LineNr">174 </span><span class="Delimiter">}</span> -<span id="L175" class="LineNr">175 </span> -<span id="L176" class="LineNr">176 </span>string <a href='035labels.cc.html#L176'>drop_last</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L177" class="LineNr">177 </span> <span class="Identifier">return</span> string<span class="Delimiter">(</span>s<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> --s<span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">());</span> +<span id="L119" class="LineNr">119 </span><span class="Normal">bool</span> <a href='035labels.cc.html#L119'>is_label</a><span class="Delimiter">(</span><span class="Normal">const</span> word& w<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L120" class="LineNr">120 </span> <span class="Identifier">return</span> *w<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> == <span class="Constant">':'</span><span class="Delimiter">;</span> +<span id="L121" class="LineNr">121 </span><span class="Delimiter">}</span> +<span id="L122" class="LineNr">122 </span> +<span id="L123" class="LineNr">123 </span><span class="Normal">void</span> <a href='035labels.cc.html#L123'>replace_labels_with_addresses</a><span class="Delimiter">(</span>segment& <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">int32_t</span>>& address<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L124" class="LineNr">124 </span> <span class="Normal">int32_t</span> byte_next_instruction_starts_at = <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L125" class="LineNr">125 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L126" class="LineNr">126 </span> line& inst = <a href='031check_operands.cc.html#L14'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> +<span id="L127" class="LineNr">127 </span> byte_next_instruction_starts_at += <a href='035labels.cc.html#L159'>num_bytes</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> +<span id="L128" class="LineNr">128 </span> <a href='011run.cc.html#L110'>line</a> new_inst<span class="Delimiter">;</span> +<span id="L129" class="LineNr">129 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L130" class="LineNr">130 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> +<span id="L131" class="LineNr">131 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L247'>contains_key</a><span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L132" class="LineNr">132 </span> <span class="Normal">int32_t</span> offset = <span class="Normal">static_cast</span><<span class="Normal">int32_t</span>><span class="Delimiter">(</span>get<span class="Delimiter">(</span>address<span class="Delimiter">,</span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> - byte_next_instruction_starts_at<span class="Delimiter">;</span> +<span id="L133" class="LineNr">133 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp8"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm8"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L134" class="LineNr">134 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>offset > <span class="Constant">0xff</span> || offset < -<span class="Constant">0x7f</span><span class="Delimiter">)</span> +<span id="L135" class="LineNr">135 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> too far away for distance "</span> << std::hex << offset << <span class="Constant">" to fit in 8 bits</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L136" class="LineNr">136 </span> <span class="Normal">else</span> +<span id="L137" class="LineNr">137 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span> +<span id="L138" class="LineNr">138 </span> <span class="Delimiter">}</span> +<span id="L139" class="LineNr">139 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp16"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L140" class="LineNr">140 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>offset > <span class="Constant">0xffff</span> || offset < -<span class="Constant">0x7fff</span><span class="Delimiter">)</span> +<span id="L141" class="LineNr">141 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': <a href='003trace.cc.html#L73'>label</a> too far away for distance "</span> << std::hex << offset << <span class="Constant">" to fit in 16 bits</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L142" class="LineNr">142 </span> <span class="Normal">else</span> +<span id="L143" class="LineNr">143 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">);</span> +<span id="L144" class="LineNr">144 </span> <span class="Delimiter">}</span> +<span id="L145" class="LineNr">145 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L146" class="LineNr">146 </span> emit_hex_bytes<span class="Delimiter">(</span>new_inst<span class="Delimiter">,</span> offset<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span> +<span id="L147" class="LineNr">147 </span> <span class="Delimiter">}</span> +<span id="L148" class="LineNr">148 </span> <span class="Delimiter">}</span> +<span id="L149" class="LineNr">149 </span> <span class="Normal">else</span> <span class="Delimiter">{</span> +<span id="L150" class="LineNr">150 </span> new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span> +<span id="L151" class="LineNr">151 </span> <span class="Delimiter">}</span> +<span id="L152" class="LineNr">152 </span> <span class="Delimiter">}</span> +<span id="L153" class="LineNr">153 </span> inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> +<span id="L154" class="LineNr">154 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction after <a href='011run.cc.html#L186'>transform</a>: '"</span> << data_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L155" class="LineNr">155 </span> <span class="Delimiter">}</span> +<span id="L156" class="LineNr">156 </span><span class="Delimiter">}</span> +<span id="L157" class="LineNr">157 </span> +<span id="L158" class="LineNr">158 </span><span class="Comment">// Assumes all bitfields are packed.</span> +<span id="L159" class="LineNr">159 </span><span class="Normal">uint32_t</span> <a href='035labels.cc.html#L159'>num_bytes</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L160" class="LineNr">160 </span> <span class="Normal">uint32_t</span> sum = <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L161" class="LineNr">161 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L162" class="LineNr">162 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> +<span id="L163" class="LineNr">163 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"disp32"</span><span class="Delimiter">)</span> || has_metadata<span class="Delimiter">(</span>curr<span class="Delimiter">,</span> <span class="Constant">"imm32"</span><span class="Delimiter">))</span> <span class="Comment">// only multi-byte operands</span> +<span id="L164" class="LineNr">164 </span> sum += <span class="Constant">4</span><span class="Delimiter">;</span> +<span id="L165" class="LineNr">165 </span> <span class="Normal">else</span> +<span id="L166" class="LineNr">166 </span> sum++<span class="Delimiter">;</span> +<span id="L167" class="LineNr">167 </span> <span class="Delimiter">}</span> +<span id="L168" class="LineNr">168 </span> <span class="Identifier">return</span> sum<span class="Delimiter">;</span> +<span id="L169" class="LineNr">169 </span><span class="Delimiter">}</span> +<span id="L170" class="LineNr">170 </span> +<span id="L171" class="LineNr">171 </span>string <a href='035labels.cc.html#L171'>data_to_string</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L172" class="LineNr">172 </span> ostringstream out<span class="Delimiter">;</span> +<span id="L173" class="LineNr">173 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L174" class="LineNr">174 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span> +<span id="L175" class="LineNr">175 </span> out << inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> +<span id="L176" class="LineNr">176 </span> <span class="Delimiter">}</span> +<span id="L177" class="LineNr">177 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span> <span id="L178" class="LineNr">178 </span><span class="Delimiter">}</span> <span id="L179" class="LineNr">179 </span> -<span id="L180" class="LineNr">180 </span><span class="Comment">//: Label definitions must be the first word on a line. No jumping inside</span> -<span id="L181" class="LineNr">181 </span><span class="Comment">//: instructions.</span> -<span id="L182" class="LineNr">182 </span><span class="Comment">//: They should also be the only word on a line.</span> -<span id="L183" class="LineNr">183 </span><span class="Comment">//: However, you can absolutely have multiple labels map to the same address,</span> -<span id="L184" class="LineNr">184 </span><span class="Comment">//: as long as they're on separate lines.</span> -<span id="L185" class="LineNr">185 </span> -<span id="L186" class="LineNr">186 </span><span class="Delimiter">:(scenario multiple_labels_at)</span> -<span id="L187" class="LineNr">187 </span>== <span class="Constant">0x1</span> -<span id="L188" class="LineNr">188 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L189" class="LineNr">189 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> -<span id="L190" class="LineNr">190 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L191" class="LineNr">191 </span><span class="Comment"># address 1</span> -<span id="L192" class="LineNr">192 </span><span class="Normal">loop</span>: -<span id="L193" class="LineNr">193 </span> $loop2: -<span id="L194" class="LineNr">194 </span><span class="Comment"># address 1 (labels take up no space)</span> -<span id="L195" class="LineNr">195 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> -<span id="L196" class="LineNr">196 </span><span class="Comment"># address 6</span> -<span id="L197" class="LineNr">197 </span> eb $loop2/disp8 -<span id="L198" class="LineNr">198 </span><span class="Comment"># address 8</span> -<span id="L199" class="LineNr">199 </span> eb $loop3/disp8 -<span id="L200" class="LineNr">200 </span><span class="Comment"># address 0xa</span> -<span id="L201" class="LineNr">201 </span> $loop3: -<span id="L202" class="LineNr">202 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> 'loop' is at address 1</span> -<span id="L203" class="LineNr">203 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> '$loop2' is at address 1</span> -<span id="L204" class="LineNr">204 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> '$loop3' is at address a</span> -<span id="L205" class="LineNr">205 </span><span class="Comment"># first jump is to -7</span> -<span id="L206" class="LineNr">206 </span><span class="traceContains">+transform: instruction after <a href='011run.cc.html#L186'>transform</a>: 'eb f9'</span> -<span id="L207" class="LineNr">207 </span><span class="Comment"># second jump is to 0 (fall through)</span> -<span id="L208" class="LineNr">208 </span><span class="traceContains">+transform: instruction after <a href='011run.cc.html#L186'>transform</a>: 'eb 00'</span> -<span id="L209" class="LineNr">209 </span> -<span id="L210" class="LineNr">210 </span><span class="Delimiter">:(scenario label_too_short)</span> -<span id="L211" class="LineNr">211 </span><span class="Special">% Hide_errors = true;</span> -<span id="L212" class="LineNr">212 </span>== <span class="Constant">0x1</span> -<span id="L213" class="LineNr">213 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L214" class="LineNr">214 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> -<span id="L215" class="LineNr">215 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L216" class="LineNr">216 </span><span class="Normal">xz</span>: -<span id="L217" class="LineNr">217 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> -<span id="L218" class="LineNr">218 </span><span class="traceContains">+error: 'xz' is two characters long which can look like raw hex bytes at a glance; use a different <a href='010---vm.cc.html#L228'>name</a></span> -<span id="L219" class="LineNr">219 </span> -<span id="L220" class="LineNr">220 </span><span class="Delimiter">:(scenario label_hex)</span> -<span id="L221" class="LineNr">221 </span><span class="Special">% Hide_errors = true;</span> -<span id="L222" class="LineNr">222 </span>== <span class="Constant">0x1</span> -<span id="L223" class="LineNr">223 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L224" class="LineNr">224 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> -<span id="L225" class="LineNr">225 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L226" class="LineNr">226 </span><span class="Constant">0xab</span>: -<span id="L227" class="LineNr">227 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> -<span id="L228" class="LineNr">228 </span><span class="traceContains">+error: '0xab' looks like a hex number; use a different <a href='010---vm.cc.html#L228'>name</a></span> -<span id="L229" class="LineNr">229 </span> -<span id="L230" class="LineNr">230 </span><span class="Delimiter">:(scenario label_negative_hex)</span> -<span id="L231" class="LineNr">231 </span><span class="Special">% Hide_errors = true;</span> -<span id="L232" class="LineNr">232 </span>== <span class="Constant">0x1</span> -<span id="L233" class="LineNr">233 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L234" class="LineNr">234 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> -<span id="L235" class="LineNr">235 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> -<span id="L236" class="LineNr">236 </span> -a: <span class="Comment"># indent to avoid looking like a trace_should_not_contain command for this scenario</span> -<span id="L237" class="LineNr">237 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> -<span id="L238" class="LineNr">238 </span><span class="traceContains">+error: '-a' starts with '-', which can be confused with a negative number; use a different <a href='010---vm.cc.html#L228'>name</a></span> +<span id="L180" class="LineNr">180 </span>string <a href='035labels.cc.html#L180'>drop_last</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L181" class="LineNr">181 </span> <span class="Identifier">return</span> string<span class="Delimiter">(</span>s<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> --s<span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">());</span> +<span id="L182" class="LineNr">182 </span><span class="Delimiter">}</span> +<span id="L183" class="LineNr">183 </span> +<span id="L184" class="LineNr">184 </span><span class="Comment">//: Label definitions must be the first word on a line. No jumping inside</span> +<span id="L185" class="LineNr">185 </span><span class="Comment">//: instructions.</span> +<span id="L186" class="LineNr">186 </span><span class="Comment">//: They should also be the only word on a line.</span> +<span id="L187" class="LineNr">187 </span><span class="Comment">//: However, you can absolutely have multiple labels map to the same address,</span> +<span id="L188" class="LineNr">188 </span><span class="Comment">//: as long as they're on separate lines.</span> +<span id="L189" class="LineNr">189 </span> +<span id="L190" class="LineNr">190 </span><span class="Delimiter">:(scenario multiple_labels_at)</span> +<span id="L191" class="LineNr">191 </span>== <span class="Constant">0x1</span> +<span id="L192" class="LineNr">192 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L193" class="LineNr">193 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L194" class="LineNr">194 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L195" class="LineNr">195 </span><span class="Comment"># address 1</span> +<span id="L196" class="LineNr">196 </span><span class="Normal">loop</span>: +<span id="L197" class="LineNr">197 </span> $loop2: +<span id="L198" class="LineNr">198 </span><span class="Comment"># address 1 (labels take up no space)</span> +<span id="L199" class="LineNr">199 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> +<span id="L200" class="LineNr">200 </span><span class="Comment"># address 6</span> +<span id="L201" class="LineNr">201 </span> eb $loop2/disp8 +<span id="L202" class="LineNr">202 </span><span class="Comment"># address 8</span> +<span id="L203" class="LineNr">203 </span> eb $loop3/disp8 +<span id="L204" class="LineNr">204 </span><span class="Comment"># address 0xa</span> +<span id="L205" class="LineNr">205 </span> $loop3: +<span id="L206" class="LineNr">206 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> 'loop' is at address 1</span> +<span id="L207" class="LineNr">207 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> '$loop2' is at address 1</span> +<span id="L208" class="LineNr">208 </span><span class="traceContains">+transform: <a href='003trace.cc.html#L73'>label</a> '$loop3' is at address a</span> +<span id="L209" class="LineNr">209 </span><span class="Comment"># first jump is to -7</span> +<span id="L210" class="LineNr">210 </span><span class="traceContains">+transform: instruction after <a href='011run.cc.html#L186'>transform</a>: 'eb f9'</span> +<span id="L211" class="LineNr">211 </span><span class="Comment"># second jump is to 0 (fall through)</span> +<span id="L212" class="LineNr">212 </span><span class="traceContains">+transform: instruction after <a href='011run.cc.html#L186'>transform</a>: 'eb 00'</span> +<span id="L213" class="LineNr">213 </span> +<span id="L214" class="LineNr">214 </span><span class="Delimiter">:(scenario label_too_short)</span> +<span id="L215" class="LineNr">215 </span><span class="Special">% Hide_errors = true;</span> +<span id="L216" class="LineNr">216 </span>== <span class="Constant">0x1</span> +<span id="L217" class="LineNr">217 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L218" class="LineNr">218 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L219" class="LineNr">219 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L220" class="LineNr">220 </span><span class="Normal">xz</span>: +<span id="L221" class="LineNr">221 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> +<span id="L222" class="LineNr">222 </span><span class="traceContains">+error: 'xz' is two characters long which can look like raw hex bytes at a glance; use a different <a href='010---vm.cc.html#L228'>name</a></span> +<span id="L223" class="LineNr">223 </span> +<span id="L224" class="LineNr">224 </span><span class="Delimiter">:(scenario label_hex)</span> +<span id="L225" class="LineNr">225 </span><span class="Special">% Hide_errors = true;</span> +<span id="L226" class="LineNr">226 </span>== <span class="Constant">0x1</span> +<span id="L227" class="LineNr">227 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L228" class="LineNr">228 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L229" class="LineNr">229 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L230" class="LineNr">230 </span><span class="Constant">0xab</span>: +<span id="L231" class="LineNr">231 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> +<span id="L232" class="LineNr">232 </span><span class="traceContains">+error: '0xab' looks like a hex number; use a different <a href='010---vm.cc.html#L228'>name</a></span> +<span id="L233" class="LineNr">233 </span> +<span id="L234" class="LineNr">234 </span><span class="Delimiter">:(scenario label_negative_hex)</span> +<span id="L235" class="LineNr">235 </span><span class="Special">% Hide_errors = true;</span> +<span id="L236" class="LineNr">236 </span>== <span class="Constant">0x1</span> +<span id="L237" class="LineNr">237 </span> <span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L238" class="LineNr">238 </span> <span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L239" class="LineNr">239 </span> <span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L240" class="LineNr">240 </span> -a: <span class="Comment"># indent to avoid looking like a trace_should_not_contain command for this scenario</span> +<span id="L241" class="LineNr">241 </span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="Constant">0x0d0c0b0a</span>/imm32 <span class="Comment"># add to EAX</span> +<span id="L242" class="LineNr">242 </span><span class="traceContains">+error: '-a' starts with '-', which can be confused with a negative number; use a different <a href='010---vm.cc.html#L228'>name</a></span> </pre> </body> </html> diff --git a/html/subx/036recommend_labels.cc.html b/html/subx/036recommend_labels.cc.html deleted file mode 100644 index 1aa057b9..00000000 --- a/html/subx/036recommend_labels.cc.html +++ /dev/null @@ -1,145 +0,0 @@ -<!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 - subx/036recommend_labels.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } -a { color:#eeeeee; text-decoration: none; } -a:hover { text-decoration: underline; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Comment { color: #9090ff; } -.Comment a { color:#0000ee; text-decoration:underline; } -.Delimiter { color: #800080; } -.LineNr { color: #444444; } -.Identifier { color: #c0a020; } -.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; } -.traceContains { color: #008000; } -.cSpecial { color: #008000; } ---> -</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; - } - 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();'> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Now that we have labels, using non-label offsets should be unnecessary.</span> -<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: While SubX will allow programmers to write raw machine code, that isn't</span> -<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: *recommended* once we have more ergonomic alternatives.</span> -<span id="L4" class="LineNr"> 4 </span> -<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(scenario warn_on_jump_offset)</span> -<span id="L6" class="LineNr"> 6 </span>== <span class="Constant">0x1</span> -<span id="L7" class="LineNr"> 7 </span>7e/jump-<span class="Normal">if</span> <span class="Constant">1</span>/disp8 -<span id="L8" class="LineNr"> 8 </span><span class="traceContains">+warn: '7e/jump-if 1/disp8': using raw offsets for jumps is not recommended; use labels instead</span> -<span id="L9" class="LineNr"> 9 </span> -<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(scenarios transform)</span> -<span id="L11" class="LineNr">11 </span><span class="Delimiter">:(scenario warn_on_call_offset)</span> -<span id="L12" class="LineNr">12 </span>== <span class="Constant">0x1</span> -<span id="L13" class="LineNr">13 </span>e8/call <span class="Constant">1</span>/disp32 -<span id="L14" class="LineNr">14 </span><span class="traceContains">+warn: 'e8/call 1/disp32': using raw offsets for calls is not recommended; use labels instead</span> -<span id="L15" class="LineNr">15 </span><span class="Delimiter">:(scenarios run)</span> -<span id="L16" class="LineNr">16 </span> -<span id="L17" class="LineNr">17 </span><span class="Delimiter">:(before "Rewrite Labels(segment code)")</span> -<span id="L18" class="LineNr">18 </span>recommend_labels<span class="Delimiter">(</span>code<span class="Delimiter">);</span> -<span id="L19" class="LineNr">19 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L20" class="LineNr">20 </span><span class="Delimiter">:(code)</span> -<span id="L21" class="LineNr">21 </span><span class="Normal">void</span> recommend_labels<span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L22" class="LineNr">22 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- check for numeric labels"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L23" class="LineNr">23 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> -<span id="L24" class="LineNr">24 </span> recommend_labels<span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span> -<span id="L25" class="LineNr">25 </span><span class="Delimiter">}</span> -<span id="L26" class="LineNr">26 </span> -<span id="L27" class="LineNr">27 </span><span class="Normal">void</span> recommend_labels<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L28" class="LineNr">28 </span> <span class="Normal">int</span> idx = <a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> -<span id="L29" class="LineNr">29 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>idx >= <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L30" class="LineNr">30 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>idx<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L31" class="LineNr">31 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> -<span id="L32" class="LineNr">32 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': using raw offsets for jumps is not recommended; use labels instead</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L33" class="LineNr">33 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L47'>is_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> -<span id="L34" class="LineNr">34 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': using raw offsets for calls is not recommended; use labels instead</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L35" class="LineNr">35 </span><span class="Delimiter">}</span> -<span id="L36" class="LineNr">36 </span> -<span id="L37" class="LineNr">37 </span><span class="Normal">bool</span> <a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L38" class="LineNr">38 </span> string op1 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> -<span id="L39" class="LineNr">39 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"0f"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L40" class="LineNr">40 </span> string op2 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> -<span id="L41" class="LineNr">41 </span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>find<span class="Delimiter">(</span>op1<span class="Delimiter">)</span> != <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L42" class="LineNr">42 </span> <span class="Delimiter">}</span> -<span id="L43" class="LineNr">43 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"ff"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> == <span class="Comment">/*</span><span class="Comment"><a href='036recommend_labels.cc.html#L54'>subop</a> for opcode ff</span><span class="Comment">*/</span><span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L44" class="LineNr">44 </span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>find<span class="Delimiter">(</span>op1<span class="Delimiter">)</span> != <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span><a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L45" class="LineNr">45 </span><span class="Delimiter">}</span> -<span id="L46" class="LineNr">46 </span> -<span id="L47" class="LineNr">47 </span><span class="Normal">bool</span> <a href='036recommend_labels.cc.html#L47'>is_call</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L48" class="LineNr">48 </span> string op1 = <a href='031check_operands.cc.html#L39'>preprocess_op</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">;</span> -<span id="L49" class="LineNr">49 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"e8"</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> true</span><span class="Delimiter">;</span> -<span id="L50" class="LineNr">50 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op1 == <span class="Constant">"ff"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> == <span class="Comment">/*</span><span class="Comment"><a href='036recommend_labels.cc.html#L54'>subop</a> for opcode ff</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span> -<span id="L51" class="LineNr">51 </span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span> <span class="Comment">// no multi-byte call opcodes</span> -<span id="L52" class="LineNr">52 </span><span class="Delimiter">}</span> -<span id="L53" class="LineNr">53 </span> -<span id="L54" class="LineNr">54 </span><span class="Normal">int</span> <a href='036recommend_labels.cc.html#L54'>subop</a><span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L55" class="LineNr">55 </span> <span class="Normal">int</span> idx = <a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> -<span id="L56" class="LineNr">56 </span> assert<span class="Delimiter">(</span>idx < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">));</span> -<span id="L57" class="LineNr">57 </span> <span class="Identifier">return</span> <span class="Delimiter">(</span><a href='030---operands.cc.html#L432'>parse_int</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>idx<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">)</span>>><span class="Constant">3</span><span class="Delimiter">)</span> & <span class="Constant">0x7</span><span class="Delimiter">;</span> -<span id="L58" class="LineNr">58 </span><span class="Delimiter">}</span> -<span id="L59" class="LineNr">59 </span> -<span id="L60" class="LineNr">60 </span><span class="Delimiter">:(before "End Globals")</span> -<span id="L61" class="LineNr">61 </span>set<string> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">;</span> -<span id="L62" class="LineNr">62 </span>set<string> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">;</span> -<span id="L63" class="LineNr">63 </span><span class="Delimiter">:(before "End One-time Setup")</span> -<span id="L64" class="LineNr">64 </span><a href='036recommend_labels.cc.html#L66'>init_jump_opcodes</a><span class="Delimiter">();</span> -<span id="L65" class="LineNr">65 </span><span class="Delimiter">:(code)</span> -<span id="L66" class="LineNr">66 </span><span class="Normal">void</span> <a href='036recommend_labels.cc.html#L66'>init_jump_opcodes</a><span class="Delimiter">()</span> <span class="Delimiter">{</span> -<span id="L67" class="LineNr">67 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"74"</span><span class="Delimiter">);</span> -<span id="L68" class="LineNr">68 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"75"</span><span class="Delimiter">);</span> -<span id="L69" class="LineNr">69 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7c"</span><span class="Delimiter">);</span> -<span id="L70" class="LineNr">70 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7d"</span><span class="Delimiter">);</span> -<span id="L71" class="LineNr">71 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7e"</span><span class="Delimiter">);</span> -<span id="L72" class="LineNr">72 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"7f"</span><span class="Delimiter">);</span> -<span id="L73" class="LineNr">73 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"84"</span><span class="Delimiter">);</span> -<span id="L74" class="LineNr">74 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"85"</span><span class="Delimiter">);</span> -<span id="L75" class="LineNr">75 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8c"</span><span class="Delimiter">);</span> -<span id="L76" class="LineNr">76 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8d"</span><span class="Delimiter">);</span> -<span id="L77" class="LineNr">77 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8e"</span><span class="Delimiter">);</span> -<span id="L78" class="LineNr">78 </span> <a href='036recommend_labels.cc.html#L62'>Jump_opcodes_0f</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"8f"</span><span class="Delimiter">);</span> -<span id="L79" class="LineNr">79 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"e9"</span><span class="Delimiter">);</span> -<span id="L80" class="LineNr">80 </span> <a href='036recommend_labels.cc.html#L61'>Jump_opcodes</a><span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">"eb"</span><span class="Delimiter">);</span> -<span id="L81" class="LineNr">81 </span><span class="Delimiter">}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> diff --git a/html/subx/037label_types.cc.html b/html/subx/037label_types.cc.html deleted file mode 100644 index 0437fdb4..00000000 --- a/html/subx/037label_types.cc.html +++ /dev/null @@ -1,110 +0,0 @@ -<!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 - subx/037label_types.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } -a { color:#eeeeee; text-decoration: none; } -a:hover { text-decoration: underline; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Special { color: #c00000; } -.Comment { color: #9090ff; } -.Comment a { color:#0000ee; text-decoration:underline; } -.Delimiter { color: #800080; } -.LineNr { color: #444444; } -.Identifier { color: #c0a020; } -.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; } -.traceContains { color: #008000; } -.cSpecial { color: #008000; } ---> -</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; - } - 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();'> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Distinguish between labels marking the start of a function, and labels</span> -<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: inside functions.</span> -<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span> -<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: - Labels within functions start with a '$', and are only permitted in</span> -<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: 'jump' instructions.</span> -<span id="L6" class="LineNr"> 6 </span><span class="Comment">//:</span> -<span id="L7" class="LineNr"> 7 </span><span class="Comment">//: - Labels marking the start of functions lack the '$' sigil, and are only</span> -<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: permitted in 'call' instructions.</span> -<span id="L9" class="LineNr"> 9 </span> -<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(before "Rewrite Labels(segment code)")</span> -<span id="L11" class="LineNr">11 </span>check_label_types<span class="Delimiter">(</span>code<span class="Delimiter">);</span> -<span id="L12" class="LineNr">12 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L13" class="LineNr">13 </span><span class="Delimiter">:(code)</span> -<span id="L14" class="LineNr">14 </span><span class="Normal">void</span> check_label_types<span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L15" class="LineNr">15 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- check <a href='003trace.cc.html#L73'>label</a> types"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L16" class="LineNr">16 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> -<span id="L17" class="LineNr">17 </span> check_label_types<span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span> -<span id="L18" class="LineNr">18 </span><span class="Delimiter">}</span> -<span id="L19" class="LineNr">19 </span> -<span id="L20" class="LineNr">20 </span><span class="Normal">void</span> check_label_types<span class="Delimiter">(</span><span class="Normal">const</span> line& inst<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L21" class="LineNr">21 </span> <span class="Normal">int</span> idx = <a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">);</span> -<span id="L22" class="LineNr">22 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>idx >= <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L23" class="LineNr">23 </span> <span class="Normal">const</span> word& target = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>idx<span class="Delimiter">);</span> -<span id="L24" class="LineNr">24 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='035labels.cc.html#L17'>is_number</a><span class="Delimiter">(</span>target<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> <span class="Comment">// handled elsewhere</span> -<span id="L25" class="LineNr">25 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> && target<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">'$'</span><span class="Delimiter">)</span> -<span id="L26" class="LineNr">26 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': jumps should always be to internal labels starting with '$'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L27" class="LineNr">27 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L47'>is_call</a><span class="Delimiter">(</span>inst<span class="Delimiter">)</span> && target<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> == <span class="Constant">'$'</span><span class="Delimiter">)</span> -<span id="L28" class="LineNr">28 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << inst<span class="Delimiter">.</span>original << <span class="Constant">"': calls should always be to function labels (not starting with '$')</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L29" class="LineNr">29 </span><span class="Delimiter">}</span> -<span id="L30" class="LineNr">30 </span> -<span id="L31" class="LineNr">31 </span><span class="Delimiter">:(scenario catch_jump_to_function)</span> -<span id="L32" class="LineNr">32 </span><span class="Special">% Hide_errors = true;</span> -<span id="L33" class="LineNr">33 </span>== <span class="Constant">0x1</span> -<span id="L34" class="LineNr">34 </span><span class="Normal"><a href='000organization.cc.html#L113'>main</a></span>: -<span id="L35" class="LineNr">35 </span>7e/jump-<span class="Normal">if</span> foo/disp8 -<span id="L36" class="LineNr">36 </span><span class="Normal">foo</span>: -<span id="L37" class="LineNr">37 </span><span class="traceContains">+error: '7e/jump-if foo/disp8': jumps should always be to internal labels starting with '$'</span> -<span id="L38" class="LineNr">38 </span> -<span id="L39" class="LineNr">39 </span><span class="Delimiter">:(scenario catch_call_to_internal_label)</span> -<span id="L40" class="LineNr">40 </span><span class="Special">% Hide_errors = true;</span> -<span id="L41" class="LineNr">41 </span>== <span class="Constant">0x1</span> -<span id="L42" class="LineNr">42 </span><span class="Normal"><a href='000organization.cc.html#L113'>main</a></span>: -<span id="L43" class="LineNr">43 </span>e8/call $foo/disp32 -<span id="L44" class="LineNr">44 </span> $foo: <span class="Comment"># indent to avoid looking like a trace_count command for this scenario</span> -<span id="L45" class="LineNr">45 </span><span class="traceContains">+error: 'e8/call $foo/disp32': calls should always be to function labels (not starting with '$')</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> diff --git a/html/subx/038check_local_jumps.cc.html b/html/subx/038check_local_jumps.cc.html deleted file mode 100644 index a37fe3f9..00000000 --- a/html/subx/038check_local_jumps.cc.html +++ /dev/null @@ -1,125 +0,0 @@ -<!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 - subx/038check_local_jumps.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } -a { color:#eeeeee; text-decoration: none; } -a:hover { text-decoration: underline; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Special { color: #c00000; } -.Comment { color: #9090ff; } -.Comment a { color:#0000ee; text-decoration:underline; } -.Delimiter { color: #800080; } -.LineNr { color: #444444; } -.Identifier { color: #c0a020; } -.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; } -.traceContains { color: #008000; } -.cSpecial { color: #008000; } ---> -</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; - } - 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();'> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Make sure that we never jump from one function to within another.</span> -<span id="L2" class="LineNr"> 2 </span><span class="Comment">//:</span> -<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: (The check for label types already ensures we can't jump to the start of</span> -<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: another function.)</span> -<span id="L5" class="LineNr"> 5 </span> -<span id="L6" class="LineNr"> 6 </span><span class="Delimiter">:(scenario jump_to_different_function)</span> -<span id="L7" class="LineNr"> 7 </span><span class="Special">% Hide_errors = true;</span> -<span id="L8" class="LineNr"> 8 </span>== <span class="Constant">0x1</span> -<span id="L9" class="LineNr"> 9 </span><span class="Normal">fn1</span>: -<span id="L10" class="LineNr">10 </span> 7e/jump-<span class="Normal">if</span> $target/disp8 -<span id="L11" class="LineNr">11 </span><span class="Normal">fn2</span>: -<span id="L12" class="LineNr">12 </span> $target: -<span id="L13" class="LineNr">13 </span><span class="traceContains">+error: '7e/jump-if $target/disp8' in function 'fn1': jump to within another function 'fn2' is a *really* bad idea</span> -<span id="L14" class="LineNr">14 </span> -<span id="L15" class="LineNr">15 </span><span class="Delimiter">:(before "Rewrite Labels(segment code)")</span> -<span id="L16" class="LineNr">16 </span><a href='038check_local_jumps.cc.html#L19'>check_local_jumps</a><span class="Delimiter">(</span>code<span class="Delimiter">);</span> -<span id="L17" class="LineNr">17 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L18" class="LineNr">18 </span><span class="Delimiter">:(code)</span> -<span id="L19" class="LineNr">19 </span><span class="Normal">void</span> <a href='038check_local_jumps.cc.html#L19'>check_local_jumps</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L20" class="LineNr">20 </span> map<<span class="Comment">/*</span><span class="Comment">jump target</span><span class="Comment">*/</span>string<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">containing call target</span><span class="Comment">*/</span>string> function<span class="Delimiter">;</span> -<span id="L21" class="LineNr">21 </span> <a href='038check_local_jumps.cc.html#L41'>compute_function_target</a><span class="Delimiter">(</span>code<span class="Delimiter">,</span> function<span class="Delimiter">);</span> -<span id="L22" class="LineNr">22 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L23" class="LineNr">23 </span> string current_function<span class="Delimiter">;</span> -<span id="L24" class="LineNr">24 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L25" class="LineNr">25 </span> <span class="Normal">const</span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L26" class="LineNr">26 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">)</span> == <span class="Constant">1</span> && <a href='035labels.cc.html#L115'>is_label</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> -<span id="L27" class="LineNr">27 </span> <span class="Comment">// label definition</span> -<span id="L28" class="LineNr">28 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">'$'</span><span class="Delimiter">)</span> -<span id="L29" class="LineNr">29 </span> current_function = <a href='035labels.cc.html#L176'>drop_last</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">);</span> -<span id="L30" class="LineNr">30 </span> <span class="Delimiter">}</span> -<span id="L31" class="LineNr">31 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='036recommend_labels.cc.html#L37'>is_jump</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L32" class="LineNr">32 </span> <span class="Normal">const</span> word& target = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><a href='031check_operands.cc.html#L276'>first_operand</a><span class="Delimiter">(</span>inst<span class="Delimiter">));</span> -<span id="L33" class="LineNr">33 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>function<span class="Delimiter">,</span> target<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// error/warning handled elsewhere</span> -<span id="L34" class="LineNr">34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>get<span class="Delimiter">(</span>function<span class="Delimiter">,</span> target<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">)</span> == current_function<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> -<span id="L35" class="LineNr">35 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"' in function '"</span> << current_function << <span class="Constant">"': jump to within another function '"</span> << get<span class="Delimiter">(</span>function<span class="Delimiter">,</span> target<span class="Delimiter">.</span>data<span class="Delimiter">)</span> << <span class="Constant">"' is a *really* bad idea</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L36" class="LineNr">36 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L37" class="LineNr">37 </span> <span class="Delimiter">}</span> -<span id="L38" class="LineNr">38 </span> <span class="Delimiter">}</span> -<span id="L39" class="LineNr">39 </span><span class="Delimiter">}</span> -<span id="L40" class="LineNr">40 </span> -<span id="L41" class="LineNr">41 </span><span class="Normal">void</span> <a href='038check_local_jumps.cc.html#L41'>compute_function_target</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> string>& out<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L42" class="LineNr">42 </span> string current_function<span class="Delimiter">;</span> -<span id="L43" class="LineNr">43 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L44" class="LineNr">44 </span> <span class="Normal">const</span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -<span id="L45" class="LineNr">45 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> -<span id="L46" class="LineNr">46 </span> <span class="Normal">const</span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L111'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> -<span id="L47" class="LineNr">47 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_label<span class="Delimiter">(</span>curr<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> -<span id="L48" class="LineNr">48 </span> <span class="Normal">const</span> string& <a href='003trace.cc.html#L73'>label</a> = <a href='035labels.cc.html#L176'>drop_last</a><span class="Delimiter">(</span>curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">);</span> -<span id="L49" class="LineNr">49 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L73'>label</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">'$'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L50" class="LineNr">50 </span> current_function = <a href='003trace.cc.html#L73'>label</a><span class="Delimiter">;</span> -<span id="L51" class="LineNr">51 </span> <span class="Identifier">continue</span><span class="Delimiter">;</span> -<span id="L52" class="LineNr">52 </span> <span class="Delimiter">}</span> -<span id="L53" class="LineNr">53 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L247'>contains_key</a><span class="Delimiter">(</span>out<span class="Delimiter">,</span> <a href='003trace.cc.html#L73'>label</a><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L54" class="LineNr">54 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"duplicate <a href='003trace.cc.html#L73'>label</a> '"</span> << label << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> -<span id="L55" class="LineNr">55 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> -<span id="L56" class="LineNr">56 </span> <span class="Delimiter">}</span> -<span id="L57" class="LineNr">57 </span> <span class="Comment">// current_function can be empty! if so that would be 'main'.</span> -<span id="L58" class="LineNr">58 </span> <a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span>out<span class="Delimiter">,</span> <a href='003trace.cc.html#L73'>label</a><span class="Delimiter">,</span> current_function<span class="Delimiter">);</span> -<span id="L59" class="LineNr">59 </span> <span class="Delimiter">}</span> -<span id="L60" class="LineNr">60 </span><span class="Delimiter">}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> diff --git a/html/subx/ex2.subx.html b/html/subx/ex2.subx.html index b0b0e50f..f0b0bc75 100644 --- a/html/subx/ex2.subx.html +++ b/html/subx/ex2.subx.html @@ -67,7 +67,7 @@ if ('onhashchange' in window) { <span id="L12" class="LineNr">12 </span><span class="Comment"># op subop mod rm32 base index scale r32</span> <span id="L13" class="LineNr">13 </span><span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> <span id="L14" class="LineNr">14 </span> bb/copy 1/imm32 <span class="Comment"># copy 1 to EBX</span> -<span id="L15" class="LineNr">15 </span> 81 0/subop/add 3/mod/direct 3/rm32/ebx 1/imm32 <span class="Comment"># add 1 to EBX</span> +<span id="L15" class="LineNr">15 </span> 81 0/subop/add 3/mod/direct 3/rm32/EBX 1/imm32 <span class="Comment"># add 1 to EBX</span> <span id="L16" class="LineNr">16 </span> <span class="Comment"># exit(EBX)</span> <span id="L17" class="LineNr">17 </span> b8/copy 1/imm32 <span class="Comment"># copy 1 to EAX</span> <span id="L18" class="LineNr">18 </span> cd/syscall 0x80/imm8 <span class="Comment"># int 80h</span> diff --git a/html/subx/ex3.subx.html b/html/subx/ex3.subx.html index 56cde00c..24ee6230 100644 --- a/html/subx/ex3.subx.html +++ b/html/subx/ex3.subx.html @@ -73,12 +73,12 @@ if ('onhashchange' in window) { <span id="L18" class="LineNr">18 </span> <span id="L19" class="LineNr">19 </span>$loop: <span id="L20" class="LineNr">20 </span> <span class="Comment"># while (counter <= 10)</span> -<span id="L21" class="LineNr">21 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ecx 0xa/imm32 <span class="Comment"># compare ECX, 10/imm</span> +<span id="L21" class="LineNr">21 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ECX 0xa/imm32 <span class="Comment"># compare ECX, 10/imm</span> <span id="L22" class="LineNr">22 </span> 7f/jump-if $exit/disp8 <span class="Comment"># jump-if-greater $exit</span> <span id="L23" class="LineNr">23 </span> <span class="Comment"># result += counter</span> -<span id="L24" class="LineNr">24 </span> 01/add 3/mod/direct 3/rm32/ebx 1/r32/ecx <span class="Comment"># add ECX to EBX</span> +<span id="L24" class="LineNr">24 </span> 01/add 3/mod/direct 3/rm32/EBX 1/r32/ECX <span class="Comment"># add ECX to EBX</span> <span id="L25" class="LineNr">25 </span> <span class="Comment"># ++counter</span> -<span id="L26" class="LineNr">26 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx 1/imm32 <span class="Comment"># add 1 to ECX</span> +<span id="L26" class="LineNr">26 </span> 81 0/subop/add 3/mod/direct 1/rm32/ECX 1/imm32 <span class="Comment"># add 1 to ECX</span> <span id="L27" class="LineNr">27 </span> <span class="Comment"># loop</span> <span id="L28" class="LineNr">28 </span> eb/jump $loop/disp8 <span class="Comment"># jump $loop</span> <span id="L29" class="LineNr">29 </span> diff --git a/html/subx/ex6.subx.html b/html/subx/ex6.subx.html index 7b4238e9..9d146d32 100644 --- a/html/subx/ex6.subx.html +++ b/html/subx/ex6.subx.html @@ -72,7 +72,7 @@ if ('onhashchange' in window) { <span id="L17" class="LineNr">17 </span> b9/copy 0x08049097/imm32 <span class="Comment"># copy to ECX</span> <span id="L18" class="LineNr">18 </span> <span class="Comment"># initialize size</span> <span id="L19" class="LineNr">19 </span> ba/copy 0x08049093/imm32 <span class="Comment"># copy to EDX</span> -<span id="L20" class="LineNr">20 </span> 8b/copy 0/mod/indirect 2/rm32/edx 2/r32/edx <span class="Comment"># copy *EDX to EDX</span> +<span id="L20" class="LineNr">20 </span> 8b/copy 0/mod/indirect 2/rm32/EDX 2/r32/EDX <span class="Comment"># copy *EDX to EDX</span> <span id="L21" class="LineNr">21 </span> <span class="Comment"># write(fd, x, size)</span> <span id="L22" class="LineNr">22 </span> b8/copy 4/imm32 <span class="Comment"># copy 4 to EAX</span> <span id="L23" class="LineNr">23 </span> cd/syscall 0x80/imm8 <span class="Comment"># int 80h</span> diff --git a/html/subx/ex8.subx.html b/html/subx/ex8.subx.html index 96bfb430..70433c87 100644 --- a/html/subx/ex8.subx.html +++ b/html/subx/ex8.subx.html @@ -140,7 +140,7 @@ if ('onhashchange' in window) { <span id="L84" class="LineNr">84 </span> <span id="L85" class="LineNr">85 </span> <span class="SalientComment">## exit(b)</span> <span id="L86" class="LineNr">86 </span> <span class="Comment"># load b</span> -<span id="L87" class="LineNr">87 </span> bb <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0x0804912d/imm32/b <span class="Comment"># copy to EBX</span> +<span id="L87" class="LineNr">87 </span> bb/copy <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0x0804912d/imm32/b <span class="Comment"># copy to EBX</span> <span id="L88" class="LineNr">88 </span> 8b/copy 0/mod/indirect 3/rm32/EBX 3/r32/EBX <span class="Comment"># copy *EBX to EBX</span> <span id="L89" class="LineNr">89 </span> <span class="Comment">#</span> <span id="L90" class="LineNr">90 </span> b8/copy <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 1/imm32/exit <span class="Comment"># copy 1 to EAX</span> |