diff options
| author | Kartik Agaram <vc@akkartik.com> | 2018-12-16 20:52:47 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-12-16 20:52:47 -0800 |
| commit | cdfff1a18d2203b8493f8700ab694c1c05ef6161 (patch) | |
| tree | ee8d998b73721b1288cd8829cc52bf72893062f8 /html/subx/012elf.cc.html | |
| parent | 011a634cc6a114088e9f7f1208147f3f59fec853 (diff) | |
| download | mu-cdfff1a18d2203b8493f8700ab694c1c05ef6161.tar.gz | |
4869
Diffstat (limited to 'html/subx/012elf.cc.html')
| -rw-r--r-- | html/subx/012elf.cc.html | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/html/subx/012elf.cc.html b/html/subx/012elf.cc.html index 88b0ffac..c2afb4f4 100644 --- a/html/subx/012elf.cc.html +++ b/html/subx/012elf.cc.html @@ -61,34 +61,34 @@ if ('onhashchange' in window) { <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/master/subx/012elf.cc'>https://github.com/akkartik/mu/blob/master/subx/012elf.cc</a> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Generating ELF binaries for SubX programs.</span> +<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Loading SubX programs from ELF binaries.</span> <span id="L2" class="LineNr"> 2 </span><span class="Comment">//: This will allow us to run them natively on a Linux kernel.</span> <span id="L3" class="LineNr"> 3 </span><span class="Comment">//: Based on <a href="https://github.com/kragen/stoneknifeforth/blob/702d2ebe1b/386.c">https://github.com/kragen/stoneknifeforth/blob/702d2ebe1b/386.c</a></span> <span id="L4" class="LineNr"> 4 </span> <span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(before "End Main")</span> <span id="L6" class="LineNr"> 6 </span>assert<span class="Delimiter">(</span>argc > <span class="Constant">1</span><span class="Delimiter">);</span> -<span id="L7" class="LineNr"> 7 </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">"run"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> -<span id="L8" class="LineNr"> 8 </span> <a href='003trace.cc.html#L252'>START_TRACING_UNTIL_END_OF_SCOPE</a><span class="Delimiter">;</span> +<span id="L7" class="LineNr"> 7 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L98'>is_equal</a><span class="Delimiter">(</span>argv[<span class="Constant">1</span>]<span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> +<span id="L8" class="LineNr"> 8 </span> <a href='003trace.cc.html#L228'>START_TRACING_UNTIL_END_OF_SCOPE</a><span class="Delimiter">;</span> <span id="L9" class="LineNr"> 9 </span> assert<span class="Delimiter">(</span>argc > <span class="Constant">2</span><span class="Delimiter">);</span> <span id="L10" class="LineNr"> 10 </span> <a href='000organization.cc.html#L148'>reset</a><span class="Delimiter">();</span> <span id="L11" class="LineNr"> 11 </span> cerr << std::hex<span class="Delimiter">;</span> <span id="L12" class="LineNr"> 12 </span> <a href='012elf.cc.html#L20'>load_elf</a><span class="Delimiter">(</span>argv[<span class="Constant">2</span>]<span class="Delimiter">,</span> argc<span class="Delimiter">,</span> argv<span class="Delimiter">);</span> <span id="L13" class="LineNr"> 13 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='010---vm.cc.html#L29'>EIP</a> < <span class="Special"><a href='010---vm.cc.html#L194'>End_of_program</a></span><span class="Delimiter">)</span> <span class="Comment">// weak final-gasp termination check</span> <span id="L14" class="LineNr"> 14 </span> <a href='010---vm.cc.html#L296'>run_one_instruction</a><span class="Delimiter">();</span> -<span id="L15" class="LineNr"> 15 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"executed past end of the world: "</span> << <a href='010---vm.cc.html#L29'>EIP</a> << <span class="Constant">" vs "</span> << <span class="Special"><a href='010---vm.cc.html#L194'>End_of_program</a></span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> +<span id="L15" class="LineNr"> 15 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"executed past end of the world: "</span> << <a href='010---vm.cc.html#L29'>EIP</a> << <span class="Constant">" vs "</span> << <span class="Special"><a href='010---vm.cc.html#L194'>End_of_program</a></span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> <span id="L16" class="LineNr"> 16 </span> <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span> <span id="L17" class="LineNr"> 17 </span><span class="Delimiter">}</span> <span id="L18" class="LineNr"> 18 </span> <span id="L19" class="LineNr"> 19 </span><span class="Delimiter">:(code)</span> <span id="L20" class="LineNr"> 20 </span><span class="Normal">void</span> <a href='012elf.cc.html#L20'>load_elf</a><span class="Delimiter">(</span><span class="Normal">const</span> string& filename<span class="Delimiter">,</span> <span class="Normal">int</span> argc<span class="Delimiter">,</span> <span class="Normal">char</span>* argv[]<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span id="L21" class="LineNr"> 21 </span> <span class="Normal">int</span> fd = open<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> O_RDONLY<span class="Delimiter">);</span> -<span id="L22" class="LineNr"> 22 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>fd < <span class="Constant">0</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L210'>raise</a> << filename<span class="Delimiter">.</span>c_str<span class="Delimiter">()</span> << <span class="Constant">": open"</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L22" class="LineNr"> 22 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>fd < <span class="Constant">0</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L190'>raise</a> << filename<span class="Delimiter">.</span>c_str<span class="Delimiter">()</span> << <span class="Constant">": open"</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L23" class="LineNr"> 23 </span> <span class="Normal">off_t</span> size = lseek<span class="Delimiter">(</span>fd<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">SEEK_END</span><span class="Delimiter">);</span> <span id="L24" class="LineNr"> 24 </span> lseek<span class="Delimiter">(</span>fd<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">SEEK_SET</span><span class="Delimiter">);</span> <span id="L25" class="LineNr"> 25 </span> <span class="Normal">uint8_t</span>* elf_contents = <span class="Normal">static_cast</span><<span class="Normal">uint8_t</span>*><span class="Delimiter">(</span>malloc<span class="Delimiter">(</span>size<span class="Delimiter">));</span> -<span id="L26" class="LineNr"> 26 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>elf_contents == <span class="Constant">NULL</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"malloc("</span> << size << <span class="Constant">')'</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L26" class="LineNr"> 26 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>elf_contents == <span class="Constant">NULL</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"malloc("</span> << size << <span class="Constant">')'</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L27" class="LineNr"> 27 </span> <span class="Normal">ssize_t</span> read_size = read<span class="Delimiter">(</span>fd<span class="Delimiter">,</span> elf_contents<span class="Delimiter">,</span> size<span class="Delimiter">);</span> -<span id="L28" class="LineNr"> 28 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>size != read_size<span class="Delimiter">)</span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"read → "</span> << size << <span class="Constant">" (!= "</span> << read_size << <span class="Constant">')'</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L28" class="LineNr"> 28 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>size != read_size<span class="Delimiter">)</span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"read → "</span> << size << <span class="Constant">" (!= "</span> << read_size << <span class="Constant">')'</span> << <a href='012elf.cc.html#L159'>perr</a><span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L29" class="LineNr"> 29 </span> <a href='012elf.cc.html#L33'>load_elf_contents</a><span class="Delimiter">(</span>elf_contents<span class="Delimiter">,</span> size<span class="Delimiter">,</span> argc<span class="Delimiter">,</span> argv<span class="Delimiter">);</span> <span id="L30" class="LineNr"> 30 </span> free<span class="Delimiter">(</span>elf_contents<span class="Delimiter">);</span> <span id="L31" class="LineNr"> 31 </span><span class="Delimiter">}</span> @@ -97,25 +97,25 @@ if ('onhashchange' in window) { <span id="L34" class="LineNr"> 34 </span> <span class="Normal">uint8_t</span> magic[<span class="Constant">5</span>] = <span class="Delimiter">{</span><span class="Constant">0</span><span class="Delimiter">};</span> <span id="L35" class="LineNr"> 35 </span> memcpy<span class="Delimiter">(</span>magic<span class="Delimiter">,</span> elf_contents<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">);</span> <span id="L36" class="LineNr"> 36 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>memcmp<span class="Delimiter">(</span>magic<span class="Delimiter">,</span> <span class="Constant">"\177ELF"</span><span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">)</span> != <span class="Constant">0</span><span class="Delimiter">)</span> -<span id="L37" class="LineNr"> 37 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Invalid ELF file; starts with \"" << magic << '"</span>' << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L37" class="LineNr"> 37 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Invalid ELF file; starts with \"" << magic << '"</span>' << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L38" class="LineNr"> 38 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>elf_contents[<span class="Constant">4</span>] != <span class="Constant">1</span><span class="Delimiter">)</span> -<span id="L39" class="LineNr"> 39 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Only 32-bit ELF files (4-byte words; virtual addresses up to 4GB) supported.\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L39" class="LineNr"> 39 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Only 32-bit ELF files (4-byte words; virtual addresses up to 4GB) supported.\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L40" class="LineNr"> 40 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>elf_contents[<span class="Constant">5</span>] != <span class="Constant">1</span><span class="Delimiter">)</span> -<span id="L41" class="LineNr"> 41 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Only little-endian ELF files supported.\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L41" class="LineNr"> 41 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Only little-endian ELF files supported.\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L42" class="LineNr"> 42 </span> <span class="Comment">// unused: remaining 10 bytes of e_ident</span> <span id="L43" class="LineNr"> 43 </span> <span class="Normal">uint32_t</span> e_machine_type = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">16</span>]<span class="Delimiter">);</span> <span id="L44" class="LineNr"> 44 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>e_machine_type != <span class="Constant">0x00030002</span><span class="Delimiter">)</span> -<span id="L45" class="LineNr"> 45 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"ELF type/machine 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << e_machine_type << <span class="Constant">" isn't i386 executable\n"</span> << die<span class="Delimiter">();</span> +<span id="L45" class="LineNr"> 45 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"ELF type/machine 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << e_machine_type << <span class="Constant">" isn't i386 executable\n"</span> << die<span class="Delimiter">();</span> <span id="L46" class="LineNr"> 46 </span> <span class="Comment">// unused: e_version. We only support version 1, and later versions will be backwards compatible.</span> <span id="L47" class="LineNr"> 47 </span> <span class="Normal">uint32_t</span> e_entry = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">24</span>]<span class="Delimiter">);</span> <span id="L48" class="LineNr"> 48 </span> <span class="Normal">uint32_t</span> e_phoff = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">28</span>]<span class="Delimiter">);</span> <span id="L49" class="LineNr"> 49 </span> <span class="Comment">// unused: e_shoff</span> <span id="L50" class="LineNr"> 50 </span> <span class="Comment">// unused: e_flags</span> <span id="L51" class="LineNr"> 51 </span> <span class="Normal">uint32_t</span> e_ehsize = <a href='012elf.cc.html#L154'>u16_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">40</span>]<span class="Delimiter">);</span> -<span id="L52" class="LineNr"> 52 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>e_ehsize < <span class="Constant">52</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Invalid binary; ELF header too small\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L52" class="LineNr"> 52 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>e_ehsize < <span class="Constant">52</span><span class="Delimiter">)</span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Invalid binary; ELF header too small\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L53" class="LineNr"> 53 </span> <span class="Normal">uint32_t</span> e_phentsize = <a href='012elf.cc.html#L154'>u16_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">42</span>]<span class="Delimiter">);</span> <span id="L54" class="LineNr"> 54 </span> <span class="Normal">uint32_t</span> e_phnum = <a href='012elf.cc.html#L154'>u16_in</a><span class="Delimiter">(</span>&elf_contents[<span class="Constant">44</span>]<span class="Delimiter">);</span> -<span id="L55" class="LineNr"> 55 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << e_phnum << <span class="Constant">" entries in the <a href='011run.cc.html#L99'>program</a> header, each "</span> << e_phentsize << <span class="Constant">" bytes long"</span> << end<span class="Delimiter">();</span> +<span id="L55" class="LineNr"> 55 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << e_phnum << <span class="Constant">" entries in the <a href='011run.cc.html#L99'>program</a> header, each "</span> << e_phentsize << <span class="Constant">" bytes long"</span> << end<span class="Delimiter">();</span> <span id="L56" class="LineNr"> 56 </span> <span class="Comment">// unused: e_shentsize</span> <span id="L57" class="LineNr"> 57 </span> <span class="Comment">// unused: e_shnum</span> <span id="L58" class="LineNr"> 58 </span> <span class="Comment">// unused: e_shstrndx</span> @@ -151,34 +151,34 @@ if ('onhashchange' in window) { <span id="L88" class="LineNr"> 88 </span> <span id="L89" class="LineNr"> 89 </span><span class="Normal">void</span> <a href='012elf.cc.html#L89'>push</a><span class="Delimiter">(</span><span class="Normal">uint32_t</span> val<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span id="L90" class="LineNr"> 90 </span> <span class="Special"><a href='010---vm.cc.html#L28'>Reg</a></span>[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span> -<span id="L91" class="LineNr"> 91 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"decrementing <a href='010---vm.cc.html#L17'>ESP</a> to 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << <span class="Special"><a href='010---vm.cc.html#L28'>Reg</a></span>[ESP]<span class="Delimiter">.</span>u << end<span class="Delimiter">();</span> -<span id="L92" class="LineNr"> 92 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pushing value 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << val << end<span class="Delimiter">();</span> +<span id="L91" class="LineNr"> 91 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"decrementing <a href='010---vm.cc.html#L17'>ESP</a> to 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << <span class="Special"><a href='010---vm.cc.html#L28'>Reg</a></span>[ESP]<span class="Delimiter">.</span>u << end<span class="Delimiter">();</span> +<span id="L92" class="LineNr"> 92 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pushing value 0x"</span> << <a href='010---vm.cc.html#L413'>HEXWORD</a> << val << end<span class="Delimiter">();</span> <span id="L93" class="LineNr"> 93 </span> <a href='010---vm.cc.html#L271'>write_mem_u32</a><span class="Delimiter">(</span><span class="Special"><a href='010---vm.cc.html#L28'>Reg</a></span>[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">,</span> val<span class="Delimiter">);</span> <span id="L94" class="LineNr"> 94 </span><span class="Delimiter">}</span> <span id="L95" class="LineNr"> 95 </span> <span id="L96" class="LineNr"> 96 </span><span class="Normal">void</span> <a href='012elf.cc.html#L96'>load_segment_from_program_header</a><span class="Delimiter">(</span><span class="Normal">uint8_t</span>* elf_contents<span class="Delimiter">,</span> <span class="Normal">int</span> segment_index<span class="Delimiter">,</span> <span class="Normal">size_t</span> size<span class="Delimiter">,</span> <span class="Normal">uint32_t</span> offset<span class="Delimiter">,</span> <span class="Normal">uint32_t</span> e_ehsize<span class="Delimiter">,</span> set<<span class="Normal">uint32_t</span>>& overlap<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span id="L97" class="LineNr"> 97 </span> <span class="Normal">uint32_t</span> p_type = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[offset]<span class="Delimiter">);</span> -<span id="L98" class="LineNr"> 98 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"program header at offset "</span> << offset << <span class="Constant">": type "</span> << p_type << end<span class="Delimiter">();</span> +<span id="L98" class="LineNr"> 98 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"program header at offset "</span> << offset << <span class="Constant">": type "</span> << p_type << end<span class="Delimiter">();</span> <span id="L99" class="LineNr"> 99 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p_type != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L100" class="LineNr">100 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"ignoring segment at offset "</span> << offset << <span class="Constant">" of non PT_LOAD type "</span> << p_type << <span class="Constant">" (see <a href="http://refspecs.linuxbase.org/elf/elf.pdf">http://refspecs.linuxbase.org/elf/elf.pdf</a>)"</span> << end<span class="Delimiter">();</span> +<span id="L100" class="LineNr">100 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"ignoring segment at offset "</span> << offset << <span class="Constant">" of non PT_LOAD type "</span> << p_type << <span class="Constant">" (see <a href="http://refspecs.linuxbase.org/elf/elf.pdf">http://refspecs.linuxbase.org/elf/elf.pdf</a>)"</span> << end<span class="Delimiter">();</span> <span id="L101" class="LineNr">101 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> <span id="L102" class="LineNr">102 </span> <span class="Delimiter">}</span> <span id="L103" class="LineNr">103 </span> <span class="Normal">uint32_t</span> p_offset = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[offset + <span class="Constant">4</span>]<span class="Delimiter">);</span> <span id="L104" class="LineNr">104 </span> <span class="Normal">uint32_t</span> p_vaddr = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[offset + <span class="Constant">8</span>]<span class="Delimiter">);</span> -<span id="L105" class="LineNr">105 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>e_ehsize > p_vaddr<span class="Delimiter">)</span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Invalid binary; <a href='011run.cc.html#L99'>program</a> header overlaps ELF header\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L105" class="LineNr">105 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>e_ehsize > p_vaddr<span class="Delimiter">)</span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Invalid binary; <a href='011run.cc.html#L99'>program</a> header overlaps ELF header\n"</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L106" class="LineNr">106 </span> <span class="Comment">// unused: p_paddr</span> <span id="L107" class="LineNr">107 </span> <span class="Normal">uint32_t</span> p_filesz = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[offset + <span class="Constant">16</span>]<span class="Delimiter">);</span> <span id="L108" class="LineNr">108 </span> <span class="Normal">uint32_t</span> p_memsz = <a href='012elf.cc.html#L150'>u32_in</a><span class="Delimiter">(</span>&elf_contents[offset + <span class="Constant">20</span>]<span class="Delimiter">);</span> <span id="L109" class="LineNr">109 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p_filesz != p_memsz<span class="Delimiter">)</span> -<span id="L110" class="LineNr">110 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Can't yet handle segments where p_filesz != p_memsz (see <a href="http://refspecs.linuxbase.org/elf/elf.pdf">http://refspecs.linuxbase.org/elf/elf.pdf</a>)\n"</span> << die<span class="Delimiter">();</span> +<span id="L110" class="LineNr">110 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Can't yet handle segments where p_filesz != p_memsz (see <a href="http://refspecs.linuxbase.org/elf/elf.pdf">http://refspecs.linuxbase.org/elf/elf.pdf</a>)\n"</span> << die<span class="Delimiter">();</span> <span id="L111" class="LineNr">111 </span> <span id="L112" class="LineNr">112 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p_offset + p_filesz > size<span class="Delimiter">)</span> -<span id="L113" class="LineNr">113 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Invalid binary; segment at offset "</span> << offset << <span class="Constant">" is too large: wants to end at "</span> << p_offset+p_filesz << <span class="Constant">" but the file ends at "</span> << size << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> +<span id="L113" class="LineNr">113 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Invalid binary; segment at offset "</span> << offset << <span class="Constant">" is too large: wants to end at "</span> << p_offset+p_filesz << <span class="Constant">" but the file ends at "</span> << size << <span class="cSpecial">'\n'</span> << <a href='012elf.cc.html#L168'>die</a><span class="Delimiter">();</span> <span id="L114" class="LineNr">114 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p_memsz >= <a href='010---vm.cc.html#L115'>SEGMENT_ALIGNMENT</a><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L115" class="LineNr">115 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"Code segment too small for SubX; for now please manually increase SEGMENT_ALIGNMENT.\n"</span> << end<span class="Delimiter">();</span> +<span id="L115" class="LineNr">115 </span> <a href='003trace.cc.html#L190'>raise</a> << <span class="Constant">"Code segment too small for SubX; for now please manually increase SEGMENT_ALIGNMENT.\n"</span> << end<span class="Delimiter">();</span> <span id="L116" class="LineNr">116 </span> <span class="Identifier">return</span><span class="Delimiter">;</span> <span id="L117" class="LineNr">117 </span> <span class="Delimiter">}</span> -<span id="L118" class="LineNr">118 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"blitting file offsets ("</span> << p_offset << <span class="Constant">", "</span> << <span class="Delimiter">(</span>p_offset+p_filesz<span class="Delimiter">)</span> << <span class="Constant">") to addresses ("</span> << p_vaddr << <span class="Constant">", "</span> << <span class="Delimiter">(</span>p_vaddr+p_memsz<span class="Delimiter">)</span> << <span class="Constant">')'</span> << end<span class="Delimiter">();</span> +<span id="L118" class="LineNr">118 </span> <a href='003trace.cc.html#L183'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"load"</span><span class="Delimiter">)</span> << <span class="Constant">"blitting file offsets ("</span> << p_offset << <span class="Constant">", "</span> << <span class="Delimiter">(</span>p_offset+p_filesz<span class="Delimiter">)</span> << <span class="Constant">") to addresses ("</span> << p_vaddr << <span class="Constant">", "</span> << <span class="Delimiter">(</span>p_vaddr+p_memsz<span class="Delimiter">)</span> << <span class="Constant">')'</span> << end<span class="Delimiter">();</span> <span id="L119" class="LineNr">119 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>size > p_memsz<span class="Delimiter">)</span> size = p_memsz<span class="Delimiter">;</span> <span id="L120" class="LineNr">120 </span> <span class="Special"><a href='010---vm.cc.html#L180'>Mem</a></span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>vma<span class="Delimiter">(</span>p_vaddr<span class="Delimiter">));</span> <span id="L121" class="LineNr">121 </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_filesz<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> @@ -231,7 +231,7 @@ if ('onhashchange' in window) { <span id="L168" class="LineNr">168 </span><span class="Normal">struct</span> <a href='012elf.cc.html#L168'>die</a> <span class="Delimiter">{};</span> <span id="L169" class="LineNr">169 </span><span class="Delimiter">:(code)</span> <span id="L170" class="LineNr">170 </span>ostream& <span class="Normal">operator</span><<<span class="Delimiter">(</span>ostream& <span class="Comment">/*</span><span class="Comment">unused</span><span class="Comment">*/</span><span class="Delimiter">,</span> <a href='012elf.cc.html#L168'>die</a> <span class="Comment">/*</span><span class="Comment">unused</span><span class="Comment">*/</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> -<span id="L171" class="LineNr">171 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special"><a href='003trace.cc.html#L174'>Trace_stream</a></span><span class="Delimiter">)</span> <span class="Special"><a href='003trace.cc.html#L174'>Trace_stream</a></span><span class="Delimiter">-></span><a href='003trace.cc.html#L147'>newline</a><span class="Delimiter">();</span> +<span id="L171" class="LineNr">171 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Special"><a href='003trace.cc.html#L154'>Trace_stream</a></span><span class="Delimiter">)</span> <span class="Special"><a href='003trace.cc.html#L154'>Trace_stream</a></span><span class="Delimiter">-></span><a href='003trace.cc.html#L127'>newline</a><span class="Delimiter">();</span> <span id="L172" class="LineNr">172 </span> exit<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> <span id="L173" class="LineNr">173 </span><span class="Delimiter">}</span> <span id="L174" class="LineNr">174 </span> |