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Rewrite, don't declare errno here.

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This commit is contained in:
Ulrich Drepper 1999-08-24 20:59:41 +00:00
parent 143751489c
commit c79dd0e87d
1 changed files with 54 additions and 19 deletions
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73
sysdeps/unix/mips/sysdep.S
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@ -1,4 +1,4 @@
/* Copyright (C) 1992, 1993, 1994, 1997, 1998 Free Software Foundation, Inc.
/* Copyright (C) 1992,93,94,97,98,99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Brendan Kehoe (brendan@zen.org).
@ -21,21 +21,11 @@
#define _ERRNO_H
#include <bits/errno.h>
.bss
.globl errno
#ifdef __ELF__
.type errno, @object
#endif
.size errno, 4
errno:
.space 4
weak_alias (errno, _errno)
.set noreorder
#ifdef _LIBC_REENTRANT
ENTRY(__syscall_error)
#ifdef PIC
.set noreorder
.set noat
move $1, $31
bltzal $0, 0f
@ -43,13 +33,61 @@ ENTRY(__syscall_error)
0: .cpload $31
move $31, $1
.set at
.set reorder
#endif
subu sp, 32
#ifdef __PIC__
.cprestore 16
#endif
sw v0, 20(sp)
sw ra, 24(sp)
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
bne v0, EWOULDBLOCK_sys, skip
nop
li v0, EAGAIN
skip:
#endif
/* Store it in the "real" variable ... */
sw v0, errno
/* Find our per-thread errno address */
jal __errno_location
/* Store the error value. */
lw t0, 20(sp)
sw t0, 0(v0)
/* And just kick back a -1. */
lw ra, 24(sp)
addiu sp, 32
li v0, -1
j ra
END(__syscall_error)
#else /* _LIBC_REENTRANT */
ENTRY(__syscall_error)
#ifdef __PIC__
.set noreorder
.set noat
move $1, $31
bltzal $0, 0f
nop
0: .cpload $31
move $31, $1
.set at
.set reorder
#endif
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
bne v0, EWOULDBLOCK_sys, skip
nop
li v0, EAGAIN
skip:
#endif
@ -57,10 +95,7 @@ skip:
sw v0, errno
/* And just kick back a -1. */
j ra
li v0, -1
j ra
END(__syscall_error)
/* We provide this alias for compatilility with other Unices
like IRIX 5 */
weak_alias (__syscall_error, syscall_error)
#endif /* _LIBC_REENTRANT */