1/* $NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $ */
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/cerror.S 178580 2008-04-26 12:08:02Z imp $");
37#include "SYS.h"
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93")
41 ASMSTR("$NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44
45 /*
46 * The __error() function is thread aware. For non-threaded
47 * programs and the initial threaded in threaded programs,
48 * it returns a pointer to the global errno variable.
49 */
50 .globl _C_LABEL(__error)
51 .type _C_LABEL(__error),%function
52
53LEAF(__cerror)
54 .frame sp, CALLFRAME_SIZ, ra
55 PIC_PROLOGUE(__cerror, t9)
56 subu sp, sp, CALLFRAME_SIZ
57 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
58 sw ra, CALLFRAME_RA(sp)
59 sw v0, 12(sp) # save errno value
60
61 la t9, _C_LABEL(__error) # locate address of errno
62 jalr t9
63
64 lw t0, 12(sp)
65 lw ra, CALLFRAME_RA(sp)
66 sw t0, 0(v0) # update errno value
67 addiu sp, sp, CALLFRAME_SIZ
68 li v0, -1
69 li v1, -1
70 j ra
71END(__cerror)
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/cerror.S 178580 2008-04-26 12:08:02Z imp $");
37#include "SYS.h"
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93")
41 ASMSTR("$NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44
45 /*
46 * The __error() function is thread aware. For non-threaded
47 * programs and the initial threaded in threaded programs,
48 * it returns a pointer to the global errno variable.
49 */
50 .globl _C_LABEL(__error)
51 .type _C_LABEL(__error),%function
52
53LEAF(__cerror)
54 .frame sp, CALLFRAME_SIZ, ra
55 PIC_PROLOGUE(__cerror, t9)
56 subu sp, sp, CALLFRAME_SIZ
57 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
58 sw ra, CALLFRAME_RA(sp)
59 sw v0, 12(sp) # save errno value
60
61 la t9, _C_LABEL(__error) # locate address of errno
62 jalr t9
63
64 lw t0, 12(sp)
65 lw ra, CALLFRAME_RA(sp)
66 sw t0, 0(v0) # update errno value
67 addiu sp, sp, CALLFRAME_SIZ
68 li v0, -1
69 li v1, -1
70 j ra
71END(__cerror)