115 lines
3.7 KiB
ArmAsm
115 lines
3.7 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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* 3. 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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#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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/* stack is 16-byte aligned */
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call __libc_sigprocmask
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popq %rdi
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2: movq %rdi,%rcx
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movq 0(%rsp),%rdx /* return address */
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movq %rdx, 0(%rcx) /* 0; return address */
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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_REFERENCE(__siglongjmp, 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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subq $0x8,%rsp /* make the stack 16-byte aligned */
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call __libc_sigprocmask
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addq $0x8,%rsp
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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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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) /* return address */
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ret
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END(__siglongjmp)
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.section .note.GNU-stack,"",%progbits
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