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| author | Kartik Agaram <vc@akkartik.com> | 2018-10-05 21:30:22 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-10-05 21:30:22 -0700 |
| commit | 94ad882e828f83df4a4cc0deab1a10e9d5e54eec (patch) | |
| tree | f51448732674fa8744e8517c4755255afc764b1f /subx/examples/ex10.subx | |
| parent | 03d50cc83c7c2bebb2b019667b80c1c51f4a8def (diff) | |
| download | mu-94ad882e828f83df4a4cc0deab1a10e9d5e54eec.tar.gz | |
4668
Diffstat (limited to 'subx/examples/ex10.subx')
| -rw-r--r-- | subx/examples/ex10.subx | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/subx/examples/ex10.subx b/subx/examples/ex10.subx index 43b0e1d1..b179369f 100644 --- a/subx/examples/ex10.subx +++ b/subx/examples/ex10.subx @@ -30,7 +30,7 @@ # exit(EAX) $exit: 89/copy 3/mod/direct 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to EBX - b8/copy . . . . . . . 1/imm32 # copy to EAX + b8/copy-to-EAX 1/imm32 cd/syscall 0x80/imm8 # compare two null-terminated ascii strings @@ -42,9 +42,9 @@ argv-equal: # (s1, s2) : null-terminated ascii strings -> EAX : boolean # while (true) $argv-equal:loop: # c1/EAX, c2/EBX = *s1, *s2 - b8/copy 0/imm32 # clear EAX + b8/copy-to-EAX 0/imm32 8a/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy byte at *ECX to lower byte of EAX - bb/copy 0/imm32 # clear EBX + bb/copy-to-EBX 0/imm32 8a/copy 0/mod/indirect 2/rm32/EDX . . . 3/r32/EBX . . # copy byte at *EDX to lower byte of EBX # if (c1 == 0) break 3d/compare-EAX 0/imm32 @@ -62,11 +62,11 @@ $argv-equal:break: 81 7/subop/compare 3/mod/direct 3/rm32/EBX . . . . . 0/imm32 # compare EBX 75/jump-if-not-equal $argv-equal:false/disp8 $argv-equal:success: - b8/copy . . . . . . . 1/imm32 # copy to EAX + b8/copy-to-EAX 1/imm32 c3/return # return false $argv-equal:false: - b8/copy . . . . . . . 0/imm32 # copy to EAX + b8/copy-to-EAX 0/imm32 c3/return # vim:nowrap:textwidth=0 |