diff options
Diffstat (limited to 'examples/ex9.subx')
| -rw-r--r-- | examples/ex9.subx | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/examples/ex9.subx b/examples/ex9.subx index 8793e941..9a6105de 100644 --- a/examples/ex9.subx +++ b/examples/ex9.subx @@ -17,7 +17,7 @@ # ... # Locals start from esp-4 downwards. -== 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 @@ -34,10 +34,9 @@ Entry: e8/call ascii-difference/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp - # 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 ascii-difference: # (s1, s2) : null-terminated ascii strings # a = first letter of s1 (ecx) @@ -50,6 +49,4 @@ ascii-difference: # (s1, s2) : null-terminated ascii strings 29/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract ecx from eax c3/return -== data 0x0a000000 - # . . vim:nowrap:textwidth=0 |