diff options
Diffstat (limited to 'libc/sysdeps/linux/i386/vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/i386/vfork.S | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/libc/sysdeps/linux/i386/vfork.S b/libc/sysdeps/linux/i386/vfork.S index 5775daee3..10e95b170 100644 --- a/libc/sysdeps/linux/i386/vfork.S +++ b/libc/sysdeps/linux/i386/vfork.S @@ -1,3 +1,10 @@ +/* + * June 27, 2001 Manuel Novoa III + * + * Modified to (hopefully) be PIC and REENTRANT safe. + * + */ + .text .align 4 .globl vfork @@ -5,18 +12,50 @@ vfork: popl %ecx movl $190,%eax +#ifdef PIC + pushl %ebx +#endif #APP int $0x80 #NO_APP +#ifdef PIC + popl %ebx +#endif cmpl $-4095,%eax - jae .L5 + jae .Lerror jmp *%ecx .p2align 4,,7 -.L5: +.Lerror: pushl %ecx + +#ifdef PIC + pushl %ebx + call .Lhere +.Lhere: + popl %ebx + addl $_GLOBAL_OFFSET_TABLE_+[.-.Lhere],%ebx negl %eax + movl %eax,%ecx +#ifdef _LIBC_REENTRANT + call __errno_location@PLT +#else + movl errno@GOT(%ebx),%eax +#endif /* _LIBC_REENTRANT */ + movl %ecx,(%eax) + popl %ebx +#else + negl %eax +#ifdef _LIBC_REENTRANT + movl %eax,%ecx + call __errno_location + movl %ecx,(%eax) +#else movl %eax,errno +#endif /* _LIBC_REENTRANT */ + +#endif /* PIC */ + movl $-1,%eax ret -.Lfe1: - .size vfork,.Lfe1-vfork +.Lsize: + .size vfork,.Lsize-vfork |