diff options
Diffstat (limited to 'libc/sysdeps/linux/i386/syscall.S')
| -rw-r--r-- | libc/sysdeps/linux/i386/syscall.S | 68 |
1 files changed, 23 insertions, 45 deletions
diff --git a/libc/sysdeps/linux/i386/syscall.S b/libc/sysdeps/linux/i386/syscall.S index 69cafd4fe..44eb00f49 100644 --- a/libc/sysdeps/linux/i386/syscall.S +++ b/libc/sysdeps/linux/i386/syscall.S @@ -19,58 +19,36 @@ * syscall(__NR_exit, 42); * and things will just work. */ - + .text - .align 4 -.globl syscall - .type syscall,@function +.global syscall +.type syscall,%function +.align 4 syscall: + pushl %ebp pushl %edi pushl %esi pushl %ebx - movl 36(%esp),%edi; /* Load the 5 syscall argument registers */ - movl 32(%esp),%esi; - movl 28(%esp),%edx; - movl 24(%esp),%ecx; - movl 20(%esp),%ebx; - movl 16(%esp),%eax /* Load syscall number into %eax. */ -#APP - int $0x80 -#NO_APP - cmpl $-4095,%eax - jbe .Ldone - -#ifdef __PIC__ - call Lhere -Lhere: - popl %ebx - addl $_GLOBAL_OFFSET_TABLE_+[.-Lhere],%ebx - negl %eax - movl %eax,%ecx -#ifdef __UCLIBC_HAS_THREADS__ - call __errno_location@PLT -#else - movl errno@GOT(%ebx),%eax -#endif /* __UCLIBC_HAS_THREADS__ */ - movl %ecx,(%eax) -#else - negl %eax -#ifdef __UCLIBC_HAS_THREADS__ - movl %eax,%ecx - call __errno_location - movl %ecx,(%eax) -#else - movl %eax,errno -#endif /* __UCLIBC_HAS_THREADS__ */ -#endif /* __PIC__ */ + movl 44(%esp),%ebp /* Load the 6 syscall argument registers */ + movl 40(%esp),%edi + movl 36(%esp),%esi + movl 32(%esp),%edx + movl 28(%esp),%ecx + movl 24(%esp),%ebx + movl 20(%esp),%eax /* Load syscall number into %eax. */ + int $0x80 - movl $-1,%eax - .p2align 4,,7 -.Ldone: popl %ebx popl %esi popl %edi - ret -.Lsize: - .size syscall,.Lsize-syscall + popl %ebp + + cmpl $-4095,%eax + jae __error + ret /* Return to caller. */ + +__error: + jmp __syscall_error + +.size syscall,.-syscall |