diff options
Diffstat (limited to 'examples/ex10.subx')
| -rw-r--r-- | examples/ex10.subx | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/examples/ex10.subx b/examples/ex10.subx index c32c44ea..36a21bbe 100644 --- a/examples/ex10.subx +++ b/examples/ex10.subx @@ -7,7 +7,7 @@ # $ echo $? # 0 # false -== code 0x09000000 +== code # instruction effective address register displacement immediate # . 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 @@ -27,10 +27,9 @@ Entry: # return argv-equal(argv[1], argv[2]) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call argv-equal/disp32 - # syscall(exit, eax) + # exit(eax) 89/copy 3/mod/direct 3/rm32/ebx . . . 0/r32/eax . . # copy eax to ebx - b8/copy-to-eax 1/imm32/exit - cd/syscall 0x80/imm8 + e8/call syscall_exit/disp32 # compare two null-terminated ascii strings # reason for the name: the only place we should have null-terminated ascii strings is from commandline args @@ -67,6 +66,4 @@ $argv-equal:false: b8/copy-to-eax 0/imm32 c3/return -== data 0x0a000000 - # . . vim:nowrap:textwidth=0 |