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.
114 lines
3.6 KiB
ArmAsm
114 lines
3.6 KiB
ArmAsm
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)setjmp.s 5.1 (Berkeley) 4/23/90"
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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.text
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.asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $"
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#endif /* LIBC_SCCS and not lint */
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include "SYS.h"
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/*-
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* TODO:
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* Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
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* remove the other *jmp functions and define everything in terms
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* of the renamed functions. This requires compiler support for
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* the renamed functions (introduced in gcc-2.5.3; previous versions
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* only supported *jmp with 0 or 1 leading underscores).
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*
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* Restore _all_ the registers and the signal mask atomically. Can
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* use sigreturn() if sigreturn() works.
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*/
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ENTRY(sigsetjmp)
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movl %esi,88(%rdi) /* 11; savemask */
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testl %esi,%esi
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jz 2f
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pushq %rdi
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movq %rdi,%rcx
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movq $1,%rdi /* SIG_BLOCK */
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movq $0,%rsi /* (sigset_t*)set */
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leaq 72(%rcx),%rdx /* 9,10 (sigset_t*)oset */
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call PIC_PLT(CNAME(_sigprocmask))
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popq %rdi
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2: movq %rdi,%rcx
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movq 0(%rsp),%rdx /* retval */
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movq %rdx, 0(%rcx) /* 0; retval */
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movq %rbx, 8(%rcx) /* 1; rbx */
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movq %rsp,16(%rcx) /* 2; rsp */
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movq %rbp,24(%rcx) /* 3; rbp */
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movq %r12,32(%rcx) /* 4; r12 */
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movq %r13,40(%rcx) /* 5; r13 */
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movq %r14,48(%rcx) /* 6; r14 */
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movq %r15,56(%rcx) /* 7; r15 */
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fnstcw 64(%rcx) /* 8; fpu cw */
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xorq %rax,%rax
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ret
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END(sigsetjmp)
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.weak CNAME(siglongjmp)
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.set CNAME(siglongjmp),CNAME(__siglongjmp)
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ENTRY(__siglongjmp)
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cmpl $0,88(%rdi)
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jz 2f
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movq %rdi,%rdx
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pushq %rdi
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pushq %rsi
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movq $3,%rdi /* SIG_SETMASK */
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leaq 72(%rdx),%rsi /* (sigset_t*)set */
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movq $0,%rdx /* (sigset_t*)oset */
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call PIC_PLT(CNAME(_sigprocmask))
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popq %rsi
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popq %rdi /* jmpbuf */
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2: movq %rdi,%rdx
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movq %rsi,%rax /* retval */
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movq 0(%rdx),%rcx
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movq 8(%rdx),%rbx
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movq 16(%rdx),%rsp
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movq 24(%rdx),%rbp
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movq 32(%rdx),%r12
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movq 40(%rdx),%r13
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movq 48(%rdx),%r14
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movq 56(%rdx),%r15
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fninit
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fldcw 64(%rdx)
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testq %rax,%rax
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jnz 1f
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incq %rax
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1: movq %rcx,0(%rsp)
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ret
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END(__siglongjmp)
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