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Kartik Agaram 2020-04-08 01:26:59 -07:00
parent 5ff8a99178
commit 6673460871
2 changed files with 10 additions and 14 deletions
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apps/survey.subx
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@ -1508,14 +1508,14 @@ $compute-addresses:segment-break:
#? # }}}
# esi = labels
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi
# var lrow/eax: (addr label-row) = labels->data
8d/copy-address 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 0xc/disp8 . # copy esi+12 to eax
# var max/ecx: (addr byte) = &labels->data[labels->write]
8b/copy 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # copy *esi to ecx
01/add 3/mod/direct 1/rm32/ecx . . . 6/r32/esi . . # add esi to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 1/r32/ecx 0xc/disp8 . # copy esi+ecx+12 to ecx
# var lrow/esi: (addr label-row) = labels->data
8d/copy-address 1/mod/*+disp8 6/rm32/esi . . . 6/r32/esi 0xc/disp8 . # copy esi+12 to esi
$compute-addresses:label-loop:
# if (lrow >= max) break
39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx
39/compare 3/mod/direct 6/rm32/esi . . . 1/r32/ecx . . # compare esi with ecx
0f 83/jump-if-addr>= $compute-addresses:end/disp32
#? # dump lrow->key {{{
#? # . write(2/stderr, "label: ")
@ -1528,7 +1528,7 @@ $compute-addresses:label-loop:
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, lrow->key)
#? # . . push args
#? ff 6/subop/push 0/mod/indirect 0/rm32/eax . . . . . . # push *eax
#? ff 6/subop/push 0/mod/indirect 6/rm32/esi . . . . . . # push *esi
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
@ -1544,7 +1544,7 @@ $compute-addresses:label-loop:
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# var seg-name/edx: (addr array byte) = lrow->segment-name
8b/copy 1/mod/*+disp8 0/rm32/eax . . . 2/r32/edx 4/disp8 . # copy *eax to edx
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 2/r32/edx 4/disp8 . # copy *esi to edx
#? # dump seg-name {{{
#? # . write(2/stderr, "compute-addresses: seg-name: ")
#? # . . push args
@ -1572,8 +1572,6 @@ $compute-addresses:label-loop:
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# var label-seg/edx: (addr segment-info) = get(segments, seg-name, row-size=16, "segment table")
# . save eax
50/push-eax
# . eax = get(segments, seg-name, row-size=16)
# . . push args
68/push "segment table"/imm32
@ -1586,27 +1584,25 @@ $compute-addresses:label-loop:
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# . edx = eax
89/copy 3/mod/direct 2/rm32/edx . . . 0/r32/eax . . # copy eax to edx
# . restore eax
58/pop-to-eax
# ebx = label-seg->address
8b/copy 0/mod/indirect 2/rm32/edx . . . 3/r32/ebx . . # copy *edx to ebx
# ebx += lrow->segment-offset
03/add 1/mod/*+disp8 0/rm32/eax . . . 3/r32/ebx 8/disp8 . # add *(eax+8) to ebx
03/add 1/mod/*+disp8 6/rm32/esi . . . 3/r32/ebx 8/disp8 . # add *(esi+8) to ebx
# lrow->address = ebx
89/copy 1/mod/*+disp8 0/rm32/eax . . . 3/r32/ebx 0xc/disp8 . # copy ebx to *(eax+12)
89/copy 1/mod/*+disp8 6/rm32/esi . . . 3/r32/ebx 0xc/disp8 . # copy ebx to *(esi+12)
# trace-sssns("label " lrow->key " is at address " lrow->address ".")
# . . push args
68/push "."/imm32
53/push-ebx
68/push "' is at address "/imm32
ff 6/subop/push 0/mod/indirect 0/rm32/eax . . . . . . # push *eax
ff 6/subop/push 0/mod/indirect 6/rm32/esi . . . . . . # push *esi
68/push "label '"/imm32
# . . call
e8/call trace-sssns/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x14/imm32 # add to esp
# lrow += 16 # size of row
05/add-to-eax 0x10/imm32
81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 0x10/imm32 # add to esi
e9/jump $compute-addresses:label-loop/disp32
$compute-addresses:end:
# . restore registers