5d053f461c
is used to set the ELF size attribute for functions. It isn't normally critical but some things can make use of it (gdb for stack traces). Valgrind needs it so I'm adding it in. The problem is present on all branches and on both i386 and amd64.
56 lines
2.0 KiB
ArmAsm
56 lines
2.0 KiB
ArmAsm
/*-
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* Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org>
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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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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include <SYS.h>
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/*
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* This has to be magic to handle the multiple returns.
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* Otherwise, the setcontext() syscall will return here and we'll
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* pop off the return address and go to the *setcontext* call.
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*/
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.weak _getcontext
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.set _getcontext,__sys_getcontext
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.weak getcontext
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.set getcontext,__sys_getcontext
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ENTRY(__sys_getcontext)
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movq (%rsp),%rsi /* save getcontext return address */
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mov $SYS_getcontext,%rax
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KERNCALL
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jb 1f
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addq $8,%rsp /* remove stale (setcontext) return address */
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jmp *%rsi /* restore return address */
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1:
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#ifdef PIC
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movq PIC_GOT(HIDENAME(cerror)),%rdx
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jmp *%rdx
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#else
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jmp HIDENAME(cerror)
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#endif
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END(__sys_getcontext)
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