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| author | Matt Hunter <m@lfurio.us> | 2025-09-17 07:56:52 -0400 |
|---|---|---|
| committer | Matt Hunter <m@lfurio.us> | 2025-09-28 22:45:59 -0400 |
| commit | ceae04d57483f811a08b360f28aaf58c0bcb0319 (patch) | |
| tree | cab9e3f96ec0017f628a5b63bb0270d73cbaf1e2 | |
| parent | 2d6d14a87afdb0eb4a4d81fd981cd825cd2c7824 (diff) | |
| download | lace-ceae04d57483f811a08b360f28aaf58c0bcb0319.tar.gz lace-ceae04d57483f811a08b360f28aaf58c0bcb0319.zip | |
Move exit call
exit is now only called from one place, so move the syscall to that
location to avoid the extra unconditional jump. There is now no longer
an exit label.
mov al, 1 is replaced with inc eax, as this overall saves 1 byte.
Since lace's exit status is no longer defined, drop the instruction to
zero ebx before exiting. Now that explicit error checking is removed,
there is no need to use this value for anything.
Signed-off-by: Matt Hunter <m@lfurio.us>
| -rw-r--r-- | lace_x86.asm | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/lace_x86.asm b/lace_x86.asm index 77e8ce9..1cf1e85 100644 --- a/lace_x86.asm +++ b/lace_x86.asm @@ -94,8 +94,9 @@ _start: xchg edi, esi call pipe - xor ebx, ebx ; exit(0) - jmp exit + xor eax, eax ; exit() + inc eax + int 0x80 pipe: mov dl, 0xff ; read(src, buff, sizeof(buff)) @@ -114,8 +115,3 @@ pipe_cont: mov al, 4 int 0x80 jmp pipe ; loop - -exit: - xor eax, eax - mov al, 1 - int 0x80 |