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https://github.com/freebsd/freebsd-src
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8269e7673c
Remove core system call implementations and documentation to lib/libsys and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>. Update paths to allow libc to find them in their new home. Reviewed by: kib, emaste, imp Pull Request: https://github.com/freebsd/freebsd-src/pull/908
67 lines
2.3 KiB
ArmAsm
67 lines
2.3 KiB
ArmAsm
/*-
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* Copyright (c) 2002 Peter Grehan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $NetBSD: cerror.S,v 1.5 2000/01/27 14:58:48 kleink Exp $ */
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#include <machine/asm.h>
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#include "SYS.h"
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.globl HIDENAME(cerror)
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.globl CNAME(__error)
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/*
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* The __error() function is thread aware. For non-threaded
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* programs and the initial thread in threaded programs,
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* it returns a pointer to the global errno variable.
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*/
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HIDENAME(cerror):
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mflr %r0
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stwu %r1,-20(%r1) /* allocate new stack frame */
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stw %r0,24(%r1) /* and save lr, r31 */
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stw %r31,12(%r1)
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#ifdef __PIC__
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stw %r30,8(%r1)
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bcl 20,31,1f
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1:
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mflr %r30
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addis %r30,%r30,_GLOBAL_OFFSET_TABLE_-1b@ha
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addi %r30,%r30,_GLOBAL_OFFSET_TABLE_-1b@l
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#endif
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mr %r31,%r3 /* stash errval in callee-saved register */
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bl PIC_PLT(CNAME(__error))
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stw %r31,0(%r3) /* store errval into &errno */
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lwz %r0,24(%r1)
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lwz %r31,12(%r1)
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#ifdef __PIC__
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lwz %r30,8(%r1)
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#endif
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mtlr %r0
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la %r1,20(%r1)
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li %r3,-1
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li %r4,-1
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blr /* return to callers caller */
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.section .note.GNU-stack,"",%progbits
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