diff options
Diffstat (limited to '092stack.subx')
| -rw-r--r-- | 092stack.subx | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/092stack.subx b/092stack.subx index 6f2e5e8a..5b015ea9 100644 --- a/092stack.subx +++ b/092stack.subx @@ -1,6 +1,6 @@ # A stack looks like this: # top: int -# data: (array byte) # prefixed by length as usual +# data: (array byte) # prefixed by size as usual == code # instruction effective address register displacement immediate @@ -16,7 +16,7 @@ clear-stack: # s: (addr stack) 51/push-ecx # eax = s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax - # var max/ecx: (addr byte) = &s->data[s->length] + # var max/ecx: (addr byte) = &s->data[s->size] 8b/copy 1/mod/*+disp8 0/rm32/eax . . . 1/r32/ecx 4/disp8 . # copy *(eax+4) to eax 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 8/disp8 . # copy eax+ecx+8 to ecx # s->top = 0 @@ -48,7 +48,7 @@ test-clear-stack: # var stack/ecx = stack of size 8 with random data in it 68/push 34/imm32 68/push 35/imm32 - 68/push 8/imm32/length + 68/push 8/imm32/size 68/push 14/imm32/top 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # clear(stack) @@ -69,11 +69,11 @@ test-clear-stack: e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp - # length should remain 8 + # size should remain 8 58/pop-to-eax # . check-ints-equal(eax, 8, msg) # . . push args - 68/push "F - test-clear-stack: length"/imm32 + 68/push "F - test-clear-stack: size"/imm32 68/push 8/imm32 50/push-eax # . . call @@ -119,7 +119,7 @@ push: # s: (addr stack), n: int 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi # ecx = s->top 8b/copy 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # copy *esi to ecx - # if (s->top >= s->length) abort + # if (s->top >= s->size) abort 39/compare 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # compare *(esi+4) and ecx 7e/jump-if-<= $push:abort/disp8 # s->data[s->top] = n @@ -167,7 +167,7 @@ test-push: # var stack/ecx = empty stack of size 8 68/push 0/imm32 68/push 0/imm32 - 68/push 8/imm32/length + 68/push 8/imm32/size 68/push 0/imm32/top 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # push(stack, 0x42) @@ -189,11 +189,11 @@ test-push: e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp - # check length + # check size 58/pop-to-eax # . check-ints-equal(eax, 8, msg) # . . push args - 68/push "F - test-push: length"/imm32 + 68/push "F - test-push: size"/imm32 68/push 8/imm32 50/push-eax # . . call @@ -285,7 +285,7 @@ test-pop: # var stack/ecx = stack of size 8 containing just 0x42 68/push 0/imm32 68/push 0x42/imm32 - 68/push 8/imm32/length + 68/push 8/imm32/size 68/push 4/imm32/top 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # eax = pop(stack) @@ -315,11 +315,11 @@ test-pop: e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp - # check length + # check size 58/pop-to-eax # . check-ints-equal(eax, 8, msg) # . . push args - 68/push "F - test-pop: length"/imm32 + 68/push "F - test-pop: size"/imm32 68/push 8/imm32 50/push-eax # . . call @@ -386,7 +386,7 @@ test-top: # var stack/ecx = stack of size 8 containing just 0x42 68/push 0/imm32 68/push 0x42/imm32 - 68/push 8/imm32/length + 68/push 8/imm32/size 68/push 4/imm32/top 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # eax = top(stack) |