diff options
| author | Kartik Agaram <vc@akkartik.com> | 2019-05-04 14:28:48 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2019-05-04 14:28:48 -0700 |
| commit | 85a3e39cd5b4d11bc38d2fc400015770e1994774 (patch) | |
| tree | 86b6b3e36bccc8f69f81ca006d6264dd8cabbc2c /subx/074print-int-decimal.subx | |
| parent | c4c30c7dc92ad8f5c00bf8facaa089b4ed9cab53 (diff) | |
| download | mu-85a3e39cd5b4d11bc38d2fc400015770e1994774.tar.gz | |
5141
Another minor stylistic point: I try to use EDI for destination operands.
Diffstat (limited to 'subx/074print-int-decimal.subx')
| -rw-r--r-- | subx/074print-int-decimal.subx | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/subx/074print-int-decimal.subx b/subx/074print-int-decimal.subx index b7994c68..a3f9bf9e 100644 --- a/subx/074print-int-decimal.subx +++ b/subx/074print-int-decimal.subx @@ -41,7 +41,7 @@ print-int32-decimal: # out : (address stream), n : int32 50/push-EAX 51/push-ECX 52/push-EDX - 53/push-EBX + 57/push-EDI # ten/ECX = 10 b9/copy-to-ECX 0xa/imm32 # push sentinel @@ -68,8 +68,8 @@ $print-int32-decimal:read-break: 7d/jump-if-greater-or-equal $print-int32-decimal:write/disp8 68/push 0x2d/imm32/- $print-int32-decimal:write: - # EBX = out - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 3/r32/EBX 8/disp8 . # copy *(EBP+8) to EBX + # EDI = out + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 7/r32/EDI 8/disp8 . # copy *(EBP+8) to EDI $print-int32-decimal:write-loop: # pop into EAX 58/pop-to-EAX @@ -78,17 +78,17 @@ $print-int32-decimal:write-loop: 74/jump-if-equal $print-int32-decimal:end/disp8 # out->data[out->write] = AL # . ECX = out->write - 8b/copy 0/mod/indirect 3/rm32/EBX . . . 1/r32/ECX . . # ECX = *EBX + 8b/copy 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # copy *EDI to ECX # . ECX = &out->data[out->write] - 8d/copy-address 1/mod/*+disp8 4/rm32/sib 3/base/EBX 1/index/ECX . 1/r32/ECX 0xc/disp8 . # copy EBX+ECX+12 to ECX + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/EDI 1/index/ECX . 1/r32/ECX 0xc/disp8 . # copy EBX+ECX+12 to ECX # . out->data[out->write] = AL 88/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy AL to byte at *ECX # out->write++ - ff 0/subop/increment 0/mod/indirect 3/rm32/EBX . . . . . . # increment *EBX + ff 0/subop/increment 0/mod/indirect 7/rm32/EDI . . . . . . # increment *EDI eb/jump $print-int32-decimal:write-loop/disp8 $print-int32-decimal:end: # . restore registers - 5b/pop-to-EBX + 5f/pop-to-EDI 5a/pop-to-EDX 59/pop-to-ECX 58/pop-to-EAX |