cerror.S revision 1.7 
1/*	$NetBSD: cerror.S,v 1.7 2011/01/15 07:31:13 matt Exp $	*/
2
3#include "SYS.h"
4#include "assym.h"
5
6#if defined(LIBC_SCCS) && !defined(lint)
7__RCSID("$NetBSD: cerror.S,v 1.7 2011/01/15 07:31:13 matt Exp $")
8#endif /* LIBC_SCCS && !lint */
9
10#ifndef _REENTRANT
11	.globl	_C_LABEL(errno)
12#endif
13#ifdef PIC
14	.hidden	_C_LABEL(__cerror)
15#endif
16
17ENTRY(__cerror)
18#ifdef _REENTRANT
19	mflr	%r0
20	stwu	%r1,-CALLFRAMELEN(%r1)		# allocate new stack frame
21	stw	%r0,CALLFRAMELEN+CALLFRAME_LR(%r1)
22	stw	%r31,CALLFRAME_R31(%r1)
23	mr	%r31,%r3			# stash away in callee-saved register
24	bl	PIC_PLT(_C_LABEL(__errno))
25	stw	%r31,0(%r3)
26	lwz	%r0,CALLFRAMELEN+CALLFRAME_LR(%r1)
27	lwz	%r31,CALLFRAME_R31(%r1)
28	mtlr	%r0
29	addi	%r1,%r1,CALLFRAMELEN
30#else
31#ifdef PIC
32	mflr	%r10
33	bl	_GLOBAL_OFFSET_TABLE_@local-4
34	mflr	%r4
35	lwz	%r4,_C_LABEL(errno)@got(%r4)
36	stw	%r3,0(%r4)
37	mtlr	%r10
38#else
39	lis	%r4,_C_LABEL(errno)@ha
40	stw	%r3,_C_LABEL(errno)@l(%r4)
41#endif /* PIC */
42#endif /* _REENTRANT */
43	li	%r3,-1
44	li	%r4,-1
45	blr
46END(__cerror)
47