diff options
Diffstat (limited to 'subx/apps/survey.subx')
| -rw-r--r-- | subx/apps/survey.subx | 77 |
1 files changed, 73 insertions, 4 deletions
diff --git a/subx/apps/survey.subx b/subx/apps/survey.subx index a73bb661..579dfbad 100644 --- a/subx/apps/survey.subx +++ b/subx/apps/survey.subx @@ -545,22 +545,91 @@ compute-addresses: # segments : (address stream {string, segment-info}), labels # if (s >= max) break # s->address &= 0xfffff000 # clear last 12 bits for p_align # s->address += (s->file-offset & 0x00000fff) - # s += 16 # size of segment-info + # s += 16 # size of row # l : (address label-info) = labels->data + 4 # skip key # max = labels->data + labels->write # while true # if (l >= max) break # seg-name : (address string) = l->segment-name - # label-seg : (address segment-info) = get(labels, seg-name) + # label-seg : (address segment-info) = get-or-insert(segments, seg-name) # l->address = label-seg->address + l->segment-offset + # l += 16 # size of row # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers + 50/push-EAX + 51/push-ECX + 52/push-EDX + 53/push-EBX + 56/push-ESI + # ESI = segments + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + # s/EAX = segments->data + 4 + 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy ESI+16 to EAX + # max/ECX = segments->data + segments->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 +$compute-addresses:segment-loop: + # if (s >= max) break + 39/compare 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # compare EAX with ECX + 73/jump-if-greater-or-equal-unsigned $compute-addresses:segment-break/disp8 + # clear last 12 bits of s->address for p_align=0x1000 + # . EDX = s->address + 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX + # . EDX &= 0xfffff000 + 81 4/subop/and 3/mod/direct 2/rm32/EDX . . . . . 0xfffff000/imm32 # bitwise and of EDX + # update last 12 bits from s->file-offset + # . EBX = s->file-offset + 8b/copy 1/mod/*+disp8 0/rm32/EAX . . . 3/r32/EBX 4/disp8 . # copy *(EAX+4) to EBX + # . EBX &= 0xfff + 81 4/subop/and 3/mod/direct 3/rm32/EBX . . . . . 0x00000fff/imm32 # bitwise and of EBX + # . s->address = EDX | EBX + 09/or 3/mod/direct 2/rm32/EDX . . . 3/r32/EBX . . # EDX = bitwise OR with EBX + 89/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy EDX to *EAX + # s += 16 # size of row + 05/add-to-EAX 0x10/imm32 + eb/jump $compute-addresses:segment-loop/disp8 +$compute-addresses:segment-break: + # ESI = labels + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # l/EAX = labels->data + 4 + 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy ESI+16 to EAX + # max/ECX = 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 +$compute-addresses:label-loop: + # if (l >= max) break + 39/compare 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # compare EAX with ECX + 73/jump-if-greater-or-equal-unsigned $compute-addresses:end/disp8 + # seg-name/EDX = l->segment-name + 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX + # label-seg/EDX : (address label-info) = get-or-insert(labels, seg-name, row-size=16) + # . . push args + 68/push 0x10/imm32/row-size + 52/push-EDX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call get-or-insert/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # EBX = label-seg->address + 8b/copy 0/mod/indirect 2/rm32/EDX . . . 3/r32/EBX . . # copy *EDX to EBX + # EBX += l->segment-offset + 03/add 1/mod/*+disp8 5/rm32/EBP . . . 3/r32/EBX 4/disp8 . # add *(EAX+4) to EBX + # l->address = EBX + 89/copy 0/mod/indirect 0/rm32/EAX . . . 3/r32/EBX . . # copy EBX to *EAX + # l += 16 # size of row + 05/add-to-EAX 0x10/imm32 + eb/jump $compute-addresses:label-loop/disp8 $compute-addresses:end: - # . reclaim locals # . restore registers + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + 58/pop-to-EAX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP @@ -696,7 +765,7 @@ stream-add4: # in : (address stream byte), key : address, val1 : address, val2 52/push-EDX 56/push-ESI # ESI = in - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/EAX = in->data + in->write # . EAX = in->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX |