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author | Kartik Agaram <vc@akkartik.com> | 2019-12-09 01:26:58 -0800 |
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committer | Kartik Agaram <vc@akkartik.com> | 2019-12-09 01:26:58 -0800 |
commit | 8aeb85f04ee68b960a6d326aca1a17dec2f6d019 (patch) | |
tree | 26f861361c28ca77fb8298b21a905dc6e06c91ef /html/053new-segment.subx.html | |
parent | 2249e605c19f0dbe0c34c1c4f635b802f56dc535 (diff) | |
download | mu-8aeb85f04ee68b960a6d326aca1a17dec2f6d019.tar.gz |
5806
Diffstat (limited to 'html/053new-segment.subx.html')
-rw-r--r-- | html/053new-segment.subx.html | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/html/053new-segment.subx.html b/html/053new-segment.subx.html index bc125b9d..142f7fda 100644 --- a/html/053new-segment.subx.html +++ b/html/053new-segment.subx.html @@ -77,7 +77,7 @@ if ('onhashchange' in window) { <span id="L17" class="LineNr">17 </span><span class="subxS1Comment"># . 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="L18" class="LineNr">18 </span> <span id="L19" class="LineNr">19 </span><span class="SpecialChar">Entry</span>: <span class="subxComment"># manual test</span> -<span id="L20" class="LineNr">20 </span> <span class="subxComment"># var ad/ecx : (address allocation-descriptor) = {0, 0}</span> +<span id="L20" class="LineNr">20 </span> <span class="subxComment"># var ad/ecx : (ref allocation-descriptor)</span> <span id="L21" class="LineNr">21 </span> 68/push 0/imm32/limit <span id="L22" class="LineNr">22 </span> 68/push 0/imm32/curr <span id="L23" class="LineNr">23 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> @@ -89,7 +89,7 @@ if ('onhashchange' in window) { <span id="L29" class="LineNr">29 </span> e8/call <a href='053new-segment.subx.html#L41'>new-segment</a>/disp32 <span id="L30" class="LineNr">30 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L31" class="LineNr">31 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L32" class="LineNr">32 </span> <span class="subxComment"># eax = ad->curr</span> +<span id="L32" class="LineNr">32 </span> <span class="subxComment"># var eax : (address _) = ad->curr</span> <span id="L33" class="LineNr">33 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to eax</span> <span id="L34" class="LineNr">34 </span> <span class="subxComment"># write to *eax to check that we have access to the newly-allocated segment</span> <span id="L35" class="LineNr">35 </span> c7 0/subop/copy 0/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x34/imm32 <span class="subxComment"># copy to *eax</span> @@ -98,7 +98,7 @@ if ('onhashchange' in window) { <span id="L38" class="LineNr">38 </span> b8/copy-to-eax 1/imm32/exit <span id="L39" class="LineNr">39 </span> cd/syscall 0x80/imm8 <span id="L40" class="LineNr">40 </span> -<span id="L41" class="LineNr">41 </span><span class="subxFunction">new-segment</span>: <span class="subxComment"># len : int, ad : (address allocation-descriptor)</span> +<span id="L41" class="LineNr">41 </span><span class="subxFunction">new-segment</span>: <span class="subxComment"># len : int, ad : (ref allocation-descriptor)</span> <span id="L42" class="LineNr">42 </span> <span class="subxS1Comment"># . prologue</span> <span id="L43" class="LineNr">43 </span> 55/push-ebp <span id="L44" class="LineNr">44 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> @@ -107,7 +107,7 @@ if ('onhashchange' in window) { <span id="L47" class="LineNr">47 </span> 53/push-ebx <span id="L48" class="LineNr">48 </span> <span class="subxComment"># copy len to _mmap-new-segment->len</span> <span id="L49" class="LineNr">49 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to eax</span> -<span id="L50" class="LineNr">50 </span> 89/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <a href='053new-segment.subx.html#L75'>_mmap-new-segment</a>:len/disp32 <span class="subxComment"># copy eax to *_mmap-new-segment:len</span> +<span id="L50" class="LineNr">50 </span> 89/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax $_mmap-new-segment:len/disp32 <span class="subxComment"># copy eax to *$_mmap-new-segment:len</span> <span id="L51" class="LineNr">51 </span> <span class="subxComment"># mmap(_mmap-new-segment)</span> <span id="L52" class="LineNr">52 </span> bb/copy-to-ebx <a href='053new-segment.subx.html#L75'>_mmap-new-segment</a>/imm32 <span id="L53" class="LineNr">53 </span> b8/copy-to-eax 0x5a/imm32/mmap @@ -132,10 +132,10 @@ if ('onhashchange' in window) { <span id="L72" class="LineNr">72 </span>== data <span id="L73" class="LineNr">73 </span> <span id="L74" class="LineNr">74 </span><span class="subxComment"># various constants used here were found in the Linux sources (search for file mman-common.h)</span> -<span id="L75" class="LineNr">75 </span><span class="subxMinorFunction">_mmap-new-segment</span>: <span class="subxComment"># type mmap_arg_struct</span> +<span id="L75" class="LineNr">75 </span><span class="subxMinorFunction">_mmap-new-segment</span>: <span class="subxComment"># (ref mmap_arg_struct)</span> <span id="L76" class="LineNr">76 </span> <span class="subxComment"># addr</span> <span id="L77" class="LineNr">77 </span> 0/imm32 -<span id="L78" class="LineNr">78 </span><span class="subxMinorFunction">_mmap-new-segment:len</span>: +<span id="L78" class="LineNr">78 </span><span class="Constant">$_mmap-new-segment:len</span>: <span id="L79" class="LineNr">79 </span> <span class="subxComment"># len</span> <span id="L80" class="LineNr">80 </span> 0/imm32 <span id="L81" class="LineNr">81 </span> <span class="subxComment"># protection flags</span> |