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| author | Kartik Agaram <vc@akkartik.com> | 2018-07-27 13:26:12 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-07-27 13:30:19 -0700 |
| commit | 071afeff5d99732b2f50f2a5009dc6f2e8303909 (patch) | |
| tree | c64ab64375bc1d7d79bc6d4022198c9b392bbf87 /subx/ex3.subx | |
| parent | 4718a77ce26c02bac7cfe28637c2892091ac0075 (diff) | |
| download | mu-071afeff5d99732b2f50f2a5009dc6f2e8303909.tar.gz | |
4445 - support labels
Diffstat (limited to 'subx/ex3.subx')
| -rw-r--r-- | subx/ex3.subx | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/subx/ex3.subx b/subx/ex3.subx index 4dcb10e9..5b3fdb16 100644 --- a/subx/ex3.subx +++ b/subx/ex3.subx @@ -12,23 +12,22 @@ # op subop mod rm32 base index scale r32 # 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes # result: EBX = 0 -# 0: e_entry = 0x08048054 bb 0/imm32 # copy 0 to EBX # counter: ECX = 1 b9 1/imm32 # copy 1 to ECX -# 10: loop: 0x0804805e +loop: # while (ECX <= 10) 81 7/subop/compare 3/mod/direct 1/rm32/ecx 0xa/imm32 # compare ECX, 10/imm - 7f 0xa/disp8 # jump-if-greater exit (+10 bytes) + 7f exit/disp8 # jump-if-greater # EBX += ECX 01 3/mod/direct 3/rm32/ebx 1/r32/ecx # add ECX to EBX # ECX++ 81 0/subop/add 3/mod/direct 1/rm32/ecx 1/imm32 # add 1 to ECX # loop - eb -0x12/disp8 # jump loop (-18 bytes) + eb loop/disp8 # jump -# 28: exit: 0x08048070 +exit: # exit(EBX) b8 1/imm32 # copy 1 to EAX cd 0x80/imm8 # int 80h |