cerror.S revision 1.6 
1/*	$NetBSD: cerror.S,v 1.6 2014/08/23 02:24:22 matt Exp $	*/
2
3#include <machine/asm.h>
4#include "SYS.h"
5
6#ifndef _REENTRANT
7	.globl	_C_LABEL(errno)
8#endif
9#ifdef __PIC__
10	.protected _C_LABEL(__cerror)
11#endif
12
13ENTRY(__cerror)
14#ifdef _REENTRANT
15	mflr	%r0
16	streg	%r0,__SIZEOF_POINTER__(%r1)
17	stptru	%r1,-(4*__SIZEOF_POINTER__)(%r1) # allocate new stack frame
18	streg	%r31,(3*__SIZEOF_POINTER__)(%r1)
19	mr	%r31,%r3		# stash away in callee-saved register
20	bl	PIC_PLT(_C_LABEL(__errno))
21	nop
22	stint	%r31,0(%r3)
23
24	ldreg	%r31,(3*__SIZEOF_POINTER__)(%r1)
25	addi	%r1,%r1,4*__SIZEOF_POINTER__
26	ldreg	%r0,__SIZEOF_POINTER__(%r1)
27	mtlr	%r0
28#else
29	.pushsection ".toc", "aw"
30.Lerrno:.tc	errno[TC], errno
31	.popsection
32	lwz	%r4,_C_LABEL(.Lerrno)@toc(%r2)
33	stw	%r3,0(%r4)
34#endif /* _REENTRANT */
35	li	%r3,-1
36	li	%r4,-1
37	blr
38END(__cerror)
39