1 /* $NetBSD: cerror.S,v 1.19 2013/09/12 15:36:15 joerg Exp $ */
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
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11 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
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19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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37 #if defined(LIBC_SCCS) && !defined(lint)
39 RCSID("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93")
41 RCSID("$NetBSD: cerror.S,v 1.19 2013/09/12 15:36:15 joerg Exp $")
43 #endif /* LIBC_SCCS and not lint */
50 .globl _C_LABEL(__errno)
51 NESTED_NOPROFILE(__cerror, CALLFRAME_SIZ, ra)
52 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
53 PIC_PROLOGUE(__cerror)
54 PTR_SUBU sp, CALLFRAME_SIZ
55 PTR_S ra, CALLFRAME_RA(sp)
56 INT_S v0, CALLFRAME_S0(sp) # save errno value
60 PTR_LA t9, _C_LABEL(__errno) # locate address of errno
61 RESTORE_GP64 # restore GP (from t3)
64 INT_L t0, CALLFRAME_S0(sp)
65 PTR_L ra, CALLFRAME_RA(sp)
66 INT_S t0, 0(v0) # update errno value
67 PTR_ADDU sp, CALLFRAME_SIZ
70 j ra # GP has been restored.
73 .globl _C_LABEL(errno)
74 LEAF_NOPROFILE(__cerror)
75 PIC_PROLOGUE(__cerror)
76 INT_S v0, _C_LABEL(errno)
81 #endif /* _REENTRANT */