diff options
Diffstat (limited to 'html/subx/028translate.cc.html')
| -rw-r--r-- | html/subx/028translate.cc.html | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/html/subx/028translate.cc.html b/html/subx/028translate.cc.html new file mode 100644 index 00000000..0838b51a --- /dev/null +++ b/html/subx/028translate.cc.html @@ -0,0 +1,223 @@ +<!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/028translate.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; } +.SalientComment { color: #00ffff; } +.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; } +.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">//: The bedrock level 1 of abstraction is now done, and we're going to start</span> +<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: building levels above it that make programming in x86 machine code a</span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: little more ergonomic.</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment">//:</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: All levels will be "pass through by default". Whatever they don't</span> +<span id="L6" class="LineNr"> 6 </span><span class="Comment">//: understand they will silently pass through to lower levels.</span> +<span id="L7" class="LineNr"> 7 </span><span class="Comment">//:</span> +<span id="L8" class="LineNr"> 8 </span><span class="Comment">//: Since raw hex bytes of machine code are always possible to inject, SubX is</span> +<span id="L9" class="LineNr"> 9 </span><span class="Comment">//: not a language, and we aren't building a compiler. This is something</span> +<span id="L10" class="LineNr"> 10 </span><span class="Comment">//: deliberately leakier. Levels are more for improving auditing, checks and</span> +<span id="L11" class="LineNr"> 11 </span><span class="Comment">//: error messages rather than for hiding low-level details.</span> +<span id="L12" class="LineNr"> 12 </span> +<span id="L13" class="LineNr"> 13 </span><span class="Comment">//: Translator workflow: read 'source' file. Run a series of transforms on it,</span> +<span id="L14" class="LineNr"> 14 </span><span class="Comment">//: each passing through what it doesn't understand. The final program should</span> +<span id="L15" class="LineNr"> 15 </span><span class="Comment">//: be just machine code, suitable to write to an ELF binary.</span> +<span id="L16" class="LineNr"> 16 </span><span class="Comment">//:</span> +<span id="L17" class="LineNr"> 17 </span><span class="Comment">//: Higher levels usually transform code on the basis of metadata.</span> +<span id="L18" class="LineNr"> 18 </span> +<span id="L19" class="LineNr"> 19 </span><span class="Delimiter">:(before "End Main")</span> +<span id="L20" class="LineNr"> 20 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L89'>is_equal</a><span class="Delimiter">(</span>argv[<span class="Constant">1</span>]<span class="Delimiter">,</span> <span class="Constant">"translate"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L21" class="LineNr"> 21 </span> <a href='003trace.cc.html#L245'>START_TRACING_UNTIL_END_OF_SCOPE</a><span class="Delimiter">;</span> +<span id="L22" class="LineNr"> 22 </span> assert<span class="Delimiter">(</span>argc > <span class="Constant">3</span><span class="Delimiter">);</span> +<span id="L23" class="LineNr"> 23 </span> <a href='011run.cc.html#L96'>program</a> p<span class="Delimiter">;</span> +<span id="L24" class="LineNr"> 24 </span> ifstream fin<span class="Delimiter">(</span>argv[<span class="Constant">2</span>]<span class="Delimiter">);</span> +<span id="L25" class="LineNr"> 25 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!fin<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L26" class="LineNr"> 26 </span> cerr << <span class="Constant">"could not open "</span> << argv[<span class="Constant">2</span>] << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span> +<span id="L27" class="LineNr"> 27 </span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span> +<span id="L28" class="LineNr"> 28 </span> <span class="Delimiter">}</span> +<span id="L29" class="LineNr"> 29 </span> <a href='011run.cc.html#L125'>parse</a><span class="Delimiter">(</span>fin<span class="Delimiter">,</span> p<span class="Delimiter">);</span> +<span id="L30" class="LineNr"> 30 </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="Constant">1</span><span class="Delimiter">;</span> +<span id="L31" class="LineNr"> 31 </span> <a href='011run.cc.html#L186'>transform</a><span class="Delimiter">(</span>p<span class="Delimiter">);</span> +<span id="L32" class="LineNr"> 32 </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="Constant">1</span><span class="Delimiter">;</span> +<span id="L33" class="LineNr"> 33 </span> <a href='028translate.cc.html#L40'>save_elf</a><span class="Delimiter">(</span>p<span class="Delimiter">,</span> argv[<span class="Constant">3</span>]<span class="Delimiter">);</span> +<span id="L34" class="LineNr"> 34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> unlink<span class="Delimiter">(</span>argv[<span class="Constant">3</span>]<span class="Delimiter">);</span> +<span id="L35" class="LineNr"> 35 </span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L36" class="LineNr"> 36 </span><span class="Delimiter">}</span> +<span id="L37" class="LineNr"> 37 </span> +<span id="L38" class="LineNr"> 38 </span><span class="Delimiter">:(code)</span> +<span id="L39" class="LineNr"> 39 </span><span class="Comment">// write out a program to a bare-bones ELF file</span> +<span id="L40" class="LineNr"> 40 </span><span class="Normal">void</span> <a href='028translate.cc.html#L40'>save_elf</a><span class="Delimiter">(</span><span class="Normal">const</span> program& p<span class="Delimiter">,</span> <span class="Normal">const</span> <span class="Normal">char</span>* filename<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L41" class="LineNr"> 41 </span> ofstream out<span class="Delimiter">(</span>filename<span class="Delimiter">,</span> ios::binary<span class="Delimiter">);</span> +<span id="L42" class="LineNr"> 42 </span> <a href='028translate.cc.html#L48'>write_elf_header</a><span class="Delimiter">(</span>out<span class="Delimiter">,</span> p<span class="Delimiter">);</span> +<span id="L43" class="LineNr"> 43 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">size_t</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < p<span class="Delimiter">.</span><a href='011run.cc.html#L97'>segments</a><span class="Delimiter">.</span>size<span class="Delimiter">();</span> ++i<span class="Delimiter">)</span> +<span id="L44" class="LineNr"> 44 </span> <a href='028translate.cc.html#L141'>write_segment</a><span class="Delimiter">(</span>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> out<span class="Delimiter">);</span> +<span id="L45" class="LineNr"> 45 </span> out<span class="Delimiter">.</span>close<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="Normal">void</span> <a href='028translate.cc.html#L48'>write_elf_header</a><span class="Delimiter">(</span>ostream& out<span class="Delimiter">,</span> <span class="Normal">const</span> program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L49" class="LineNr"> 49 </span> <span class="Normal">char</span> c = <span class="cSpecial">'\0'</span><span class="Delimiter">;</span> +<span id="L50" class="LineNr"> 50 </span><span class="Comment">#define O(X) c = (X); out.write(&c, sizeof(c))</span> +<span id="L51" class="LineNr"> 51 </span><span class="Comment">// host is required to be little-endian</span> +<span id="L52" class="LineNr"> 52 </span><span class="Comment">#define emit(X) out.write(reinterpret_cast<const char*>(&X), sizeof(X))</span> +<span id="L53" class="LineNr"> 53 </span> <span class="SalientComment">//// ehdr</span> +<span id="L54" class="LineNr"> 54 </span> <span class="Comment">// e_ident</span> +<span id="L55" class="LineNr"> 55 </span> O<span class="Delimiter">(</span><span class="Constant">0x7f</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">E</span><span class="Comment">*/</span><span class="Constant">0x45</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">L</span><span class="Comment">*/</span><span class="Constant">0x4c</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">F</span><span class="Comment">*/</span><span class="Constant">0x46</span><span class="Delimiter">);</span> +<span id="L56" class="LineNr"> 56 </span> O<span class="Delimiter">(</span><span class="Constant">0x1</span><span class="Delimiter">);</span> <span class="Comment">// 32-bit format</span> +<span id="L57" class="LineNr"> 57 </span> O<span class="Delimiter">(</span><span class="Constant">0x1</span><span class="Delimiter">);</span> <span class="Comment">// little-endian</span> +<span id="L58" class="LineNr"> 58 </span> O<span class="Delimiter">(</span><span class="Constant">0x1</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x0</span><span class="Delimiter">);</span> +<span id="L59" class="LineNr"> 59 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">size_t</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <span class="Constant">8</span><span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> O<span class="Delimiter">(</span><span class="Constant">0x0</span><span class="Delimiter">);</span> <span class="Delimiter">}</span> +<span id="L60" class="LineNr"> 60 </span> <span class="Comment">// e_type</span> +<span id="L61" class="LineNr"> 61 </span> O<span class="Delimiter">(</span><span class="Constant">0x02</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x00</span><span class="Delimiter">);</span> +<span id="L62" class="LineNr"> 62 </span> <span class="Comment">// e_machine</span> +<span id="L63" class="LineNr"> 63 </span> O<span class="Delimiter">(</span><span class="Constant">0x03</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x00</span><span class="Delimiter">);</span> +<span id="L64" class="LineNr"> 64 </span> <span class="Comment">// e_version</span> +<span id="L65" class="LineNr"> 65 </span> O<span class="Delimiter">(</span><span class="Constant">0x01</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x00</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x00</span><span class="Delimiter">);</span> O<span class="Delimiter">(</span><span class="Constant">0x00</span><span class="Delimiter">);</span> +<span id="L66" class="LineNr"> 66 </span> <span class="Comment">// e_entry</span> +<span id="L67" class="LineNr"> 67 </span> <span class="Normal">int</span> e_entry = 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><a href='011run.cc.html#L105'>start</a><span class="Delimiter">;</span> <span class="Comment">// convention</span> +<span id="L68" class="LineNr"> 68 </span> emit<span class="Delimiter">(</span>e_entry<span class="Delimiter">);</span> +<span id="L69" class="LineNr"> 69 </span> <span class="Comment">// e_phoff -- immediately after ELF header</span> +<span id="L70" class="LineNr"> 70 </span> <span class="Normal">int</span> e_phoff = <span class="Constant">0x34</span><span class="Delimiter">;</span> +<span id="L71" class="LineNr"> 71 </span> emit<span class="Delimiter">(</span>e_phoff<span class="Delimiter">);</span> +<span id="L72" class="LineNr"> 72 </span> <span class="Comment">// e_shoff; unused</span> +<span id="L73" class="LineNr"> 73 </span> <span class="Normal">int</span> dummy32 = <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L74" class="LineNr"> 74 </span> emit<span class="Delimiter">(</span>dummy32<span class="Delimiter">);</span> +<span id="L75" class="LineNr"> 75 </span> <span class="Comment">// e_flags; unused</span> +<span id="L76" class="LineNr"> 76 </span> emit<span class="Delimiter">(</span>dummy32<span class="Delimiter">);</span> +<span id="L77" class="LineNr"> 77 </span> <span class="Comment">// e_ehsize</span> +<span id="L78" class="LineNr"> 78 </span> <span class="Normal">uint16_t</span> e_ehsize = <span class="Constant">0x34</span><span class="Delimiter">;</span> +<span id="L79" class="LineNr"> 79 </span> emit<span class="Delimiter">(</span>e_ehsize<span class="Delimiter">);</span> +<span id="L80" class="LineNr"> 80 </span> <span class="Comment">// e_phentsize</span> +<span id="L81" class="LineNr"> 81 </span> <span class="Normal">uint16_t</span> e_phentsize = <span class="Constant">0x20</span><span class="Delimiter">;</span> +<span id="L82" class="LineNr"> 82 </span> emit<span class="Delimiter">(</span>e_phentsize<span class="Delimiter">);</span> +<span id="L83" class="LineNr"> 83 </span> <span class="Comment">// e_phnum</span> +<span id="L84" class="LineNr"> 84 </span> <span class="Normal">uint16_t</span> e_phnum = <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> +<span id="L85" class="LineNr"> 85 </span> emit<span class="Delimiter">(</span>e_phnum<span class="Delimiter">);</span> +<span id="L86" class="LineNr"> 86 </span> <span class="Comment">// e_shentsize</span> +<span id="L87" class="LineNr"> 87 </span> <span class="Normal">uint16_t</span> dummy16 = <span class="Constant">0x0</span><span class="Delimiter">;</span> +<span id="L88" class="LineNr"> 88 </span> emit<span class="Delimiter">(</span>dummy16<span class="Delimiter">);</span> +<span id="L89" class="LineNr"> 89 </span> <span class="Comment">// e_shnum</span> +<span id="L90" class="LineNr"> 90 </span> emit<span class="Delimiter">(</span>dummy16<span class="Delimiter">);</span> +<span id="L91" class="LineNr"> 91 </span> <span class="Comment">// e_shstrndx</span> +<span id="L92" class="LineNr"> 92 </span> emit<span class="Delimiter">(</span>dummy16<span class="Delimiter">);</span> +<span id="L93" class="LineNr"> 93 </span> +<span id="L94" class="LineNr"> 94 </span> <span class="Normal">uint32_t</span> p_offset = <span class="Comment">/*</span><span class="Comment">size of ehdr</span><span class="Comment">*/</span><span class="Constant">0x34</span> + <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>*<span class="Constant">0x20</span><span class="Comment">/*</span><span class="Comment">size of each phdr</span><span class="Comment">*/</span><span class="Delimiter">;</span> +<span id="L95" class="LineNr"> 95 </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>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="L96" class="LineNr"> 96 </span> <span class="SalientComment">//// phdr</span> +<span id="L97" class="LineNr"> 97 </span> <span class="Comment">// p_type</span> +<span id="L98" class="LineNr"> 98 </span> <span class="Normal">uint32_t</span> p_type = <span class="Constant">0x1</span><span class="Delimiter">;</span> +<span id="L99" class="LineNr"> 99 </span> emit<span class="Delimiter">(</span>p_type<span class="Delimiter">);</span> +<span id="L100" class="LineNr">100 </span> <span class="Comment">// p_offset</span> +<span id="L101" class="LineNr">101 </span> emit<span class="Delimiter">(</span>p_offset<span class="Delimiter">);</span> +<span id="L102" class="LineNr">102 </span> <span class="Comment">// p_vaddr</span> +<span id="L103" class="LineNr">103 </span> emit<span class="Delimiter">(</span>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><a href='011run.cc.html#L105'>start</a><span class="Delimiter">);</span> +<span id="L104" class="LineNr">104 </span> <span class="Comment">// p_paddr</span> +<span id="L105" class="LineNr">105 </span> emit<span class="Delimiter">(</span>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><a href='011run.cc.html#L105'>start</a><span class="Delimiter">);</span> +<span id="L106" class="LineNr">106 </span> <span class="Comment">// p_filesz</span> +<span id="L107" class="LineNr">107 </span> <span class="Normal">uint32_t</span> size = <a href='028translate.cc.html#L151'>size_of</a><span class="Delimiter">(</span>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="L108" class="LineNr">108 </span> assert<span class="Delimiter">(</span>size < <a href='012elf.cc.html#L105'>SEGMENT_SIZE</a><span class="Delimiter">);</span> +<span id="L109" class="LineNr">109 </span> emit<span class="Delimiter">(</span>size<span class="Delimiter">);</span> +<span id="L110" class="LineNr">110 </span> <span class="Comment">// p_memsz</span> +<span id="L111" class="LineNr">111 </span> emit<span class="Delimiter">(</span>size<span class="Delimiter">);</span> +<span id="L112" class="LineNr">112 </span> <span class="Comment">// p_flags</span> +<span id="L113" class="LineNr">113 </span> <span class="Normal">uint32_t</span> p_flags = <span class="Delimiter">(</span>i == <span class="Constant">0</span><span class="Delimiter">)</span> ? <span class="Comment">/*</span><span class="Comment">r-x</span><span class="Comment">*/</span><span class="Constant">0x5</span> : <span class="Comment">/*</span><span class="Comment">rw-</span><span class="Comment">*/</span><span class="Constant">0x6</span><span class="Delimiter">;</span> <span class="Comment">// convention: only first segment is code</span> +<span id="L114" class="LineNr">114 </span> emit<span class="Delimiter">(</span>p_flags<span class="Delimiter">);</span> +<span id="L115" class="LineNr">115 </span> +<span id="L116" class="LineNr">116 </span> <span class="Comment">// p_align</span> +<span id="L117" class="LineNr">117 </span> <span class="Comment">// "As the system creates or augments a process image, it logically copies</span> +<span id="L118" class="LineNr">118 </span> <span class="Comment">// a file's segment to a virtual memory segment. When—and if— the system</span> +<span id="L119" class="LineNr">119 </span> <span class="Comment">// physically reads the file depends on the program's execution behavior,</span> +<span id="L120" class="LineNr">120 </span> <span class="Comment">// system load, and so on. A process does not require a physical page</span> +<span id="L121" class="LineNr">121 </span> <span class="Comment">// unless it references the logical page during execution, and processes</span> +<span id="L122" class="LineNr">122 </span> <span class="Comment">// commonly leave many pages unreferenced. Therefore delaying physical</span> +<span id="L123" class="LineNr">123 </span> <span class="Comment">// reads frequently obviates them, improving system performance. To obtain</span> +<span id="L124" class="LineNr">124 </span> <span class="Comment">// this efficiency in practice, executable and shared object files must</span> +<span id="L125" class="LineNr">125 </span> <span class="Comment">// have segment images whose file offsets and virtual addresses are</span> +<span id="L126" class="LineNr">126 </span> <span class="Comment">// congruent, modulo the page size." -- <a href="http://refspecs.linuxbase.org/elf/elf.pdf">http://refspecs.linuxbase.org/elf/elf.pdf</a> (page 95)</span> +<span id="L127" class="LineNr">127 </span> <span class="Normal">uint32_t</span> p_align = <span class="Constant">0x1000</span><span class="Delimiter">;</span> <span class="Comment">// default page size on linux</span> +<span id="L128" class="LineNr">128 </span> emit<span class="Delimiter">(</span>p_align<span class="Delimiter">);</span> +<span id="L129" class="LineNr">129 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p_offset % p_align != 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><a href='011run.cc.html#L105'>start</a> % p_align<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L130" class="LineNr">130 </span> <a href='003trace.cc.html#L203'>raise</a> << <span class="Constant">"segment starting at 0x"</span> << <a href='010---vm.cc.html#L260'>HEXWORD</a> << 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><a href='011run.cc.html#L105'>start</a> << <span class="Constant">" is improperly aligned; alignment for p_offset "</span> << p_offset << <span class="Constant">" should be "</span> << <span class="Delimiter">(</span>p_offset % p_align<span class="Delimiter">)</span> << <span class="Constant">" but is "</span> << <span class="Delimiter">(</span>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><a href='011run.cc.html#L105'>start</a> % p_align<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span> +<span id="L131" class="LineNr">131 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> +<span id="L132" class="LineNr">132 </span> <span class="Delimiter">}</span> +<span id="L133" class="LineNr">133 </span> +<span id="L134" class="LineNr">134 </span> <span class="Comment">// prepare for next segment</span> +<span id="L135" class="LineNr">135 </span> p_offset += size<span class="Delimiter">;</span> +<span id="L136" class="LineNr">136 </span> <span class="Delimiter">}</span> +<span id="L137" class="LineNr">137 </span><span class="Comment">#undef O</span> +<span id="L138" class="LineNr">138 </span><span class="Comment">#undef emit</span> +<span id="L139" class="LineNr">139 </span><span class="Delimiter">}</span> +<span id="L140" class="LineNr">140 </span> +<span id="L141" class="LineNr">141 </span><span class="Normal">void</span> <a href='028translate.cc.html#L141'>write_segment</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& s<span class="Delimiter">,</span> ostream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L142" class="LineNr">142 </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>s<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="L143" class="LineNr">143 </span> <span class="Normal">const</span> vector<word>& w = s<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><a href='011run.cc.html#L111'>words</a><span class="Delimiter">;</span> +<span id="L144" class="LineNr">144 </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>w<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L145" class="LineNr">145 </span> <span class="Normal">uint8_t</span> x = <a href='011run.cc.html#L222'>hex_byte</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span><a href='011run.cc.html#L118'>data</a><span class="Delimiter">);</span> <span class="Comment">// we're done with metadata by this point</span> +<span id="L146" class="LineNr">146 </span> out<span class="Delimiter">.</span>write<span class="Delimiter">(</span><span class="Normal">reinterpret_cast</span><<span class="Normal">const</span> <span class="Normal">char</span>*><span class="Delimiter">(</span>&x<span class="Delimiter">),</span> <span class="Comment">/*</span><span class="Comment">sizeof(byte)</span><span class="Comment">*/</span><span class="Constant">1</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="Delimiter">}</span> +<span id="L150" class="LineNr">150 </span> +<span id="L151" class="LineNr">151 </span><span class="Normal">uint32_t</span> <a href='028translate.cc.html#L151'>size_of</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& s<span class="Delimiter">)</span> <span class="Delimiter">{</span> +<span id="L152" class="LineNr">152 </span> <span class="Normal">uint32_t</span> sum = <span class="Constant">0</span><span class="Delimiter">;</span> +<span id="L153" class="LineNr">153 </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>s<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> +<span id="L154" class="LineNr">154 </span> sum += <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>s<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><a href='011run.cc.html#L111'>words</a><span class="Delimiter">);</span> +<span id="L155" class="LineNr">155 </span> <span class="Identifier">return</span> sum<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="Delimiter">:(before "End Includes")</span> +<span id="L159" class="LineNr">159 </span><span class="Normal">using</span> std::ios<span class="Delimiter">;</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |