diff options
Diffstat (limited to '126write-int-decimal.subx')
| -rw-r--r-- | 126write-int-decimal.subx | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/126write-int-decimal.subx b/126write-int-decimal.subx index bc4a510e..ed2077a2 100644 --- a/126write-int-decimal.subx +++ b/126write-int-decimal.subx @@ -43,18 +43,24 @@ write-int32-decimal: # out: (addr stream byte), n: int 51/push-ecx 52/push-edx 53/push-ebx + 56/push-esi 57/push-edi + be/copy-to-esi 3/imm32/x # const ten/ecx = 10 b9/copy-to-ecx 0xa/imm32 # push sentinel 68/push 0/imm32/sentinel # var eax: int = abs(n) 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 0xc/disp8 . # copy *(ebp+12) to eax + (draw-vertical-line-on-real-screen %eax 0x40 0x50 %eax) + 81 0/subop/add %esi 3/imm32 3d/compare-eax-with 0/imm32 7d/jump-if->= $write-int32-decimal:read-loop/disp8 $write-int32-decimal:negative: f7 3/subop/negate 3/mod/direct 0/rm32/eax . . . . . . # negate eax $write-int32-decimal:read-loop: + (draw-vertical-line-on-real-screen %esi 0x80 0x90 %esi) + 81 0/subop/add %esi 3/imm32 # eax, edx = eax / 10, eax % 10 99/sign-extend-eax-into-edx f7 7/subop/idiv 3/mod/direct 1/rm32/ecx . . . . . . # divide edx:eax by ecx, storing quotient in eax and remainder in edx @@ -104,6 +110,7 @@ $write-int32-decimal:write-break: $write-int32-decimal:end: # . restore registers 5f/pop-to-edi + 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx 59/pop-to-ecx |