53 lines
1.1 KiB
ArmAsm
53 lines
1.1 KiB
ArmAsm
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/* $NetBSD: cerror.S,v 1.8 2011/01/16 02:43:10 matt Exp $ */
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#include "SYS.h"
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#include "assym.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: cerror.S,v 1.8 2011/01/16 02:43:10 matt Exp $")
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#endif /* LIBC_SCCS && !lint */
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#ifndef _REENTRANT
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.globl _C_LABEL(errno)
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#endif
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#ifdef PIC
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.hidden _C_LABEL(__cerror)
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#endif
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ENTRY(__cerror)
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#ifdef _REENTRANT
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mflr %r0
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stwu %r1,-CALLFRAMELEN(%r1) # allocate new stack frame
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stw %r0,CALLFRAMELEN+CALLFRAME_LR(%r1)
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#ifdef PIC
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stw %r30,CALLFRAME_R30(%r1)
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PIC_TOCSETUP(__cerror, %r30)
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#endif
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stw %r31,CALLFRAME_R31(%r1)
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mr %r31,%r3 # stash away in callee-saved register
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bl PIC_PLT(_C_LABEL(__errno))
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stw %r31,0(%r3)
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lwz %r0,CALLFRAMELEN+CALLFRAME_LR(%r1)
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lwz %r31,CALLFRAME_R31(%r1)
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#ifdef PIC
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lwz %r30,CALLFRAME_R30(%r1)
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#endif
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mtlr %r0
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addi %r1,%r1,CALLFRAMELEN
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#else
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#ifdef PIC
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mflr %r10
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PIC_GOTSETUP(%r4)
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lwz %r4,_C_LABEL(errno)@got(%r4)
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stw %r3,0(%r4)
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mtlr %r10
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#else
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lis %r4,_C_LABEL(errno)@ha
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stw %r3,_C_LABEL(errno)@l(%r4)
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#endif /* PIC */
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#endif /* _REENTRANT */
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li %r3,-1
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li %r4,-1
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blr
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END(__cerror)
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