sigsetjmp.S revision 115745
11849Swollman/*- 21849Swollman * Copyright (c) 1990 The Regents of the University of California. 31849Swollman * All rights reserved. 41849Swollman * 51849Swollman * This code is derived from software contributed to Berkeley by 61849Swollman * William Jolitz. 71849Swollman * 81849Swollman * Redistribution and use in source and binary forms, with or without 91849Swollman * modification, are permitted provided that the following conditions 101849Swollman * are met: 111849Swollman * 1. Redistributions of source code must retain the above copyright 121849Swollman * notice, this list of conditions and the following disclaimer. 131849Swollman * 2. Redistributions in binary form must reproduce the above copyright 141849Swollman * notice, this list of conditions and the following disclaimer in the 151849Swollman * documentation and/or other materials provided with the distribution. 161849Swollman * 3. All advertising materials mentioning features or use of this software 171849Swollman * must display the following acknowledgement: 181849Swollman * This product includes software developed by the University of 191849Swollman * California, Berkeley and its contributors. 201849Swollman * 4. Neither the name of the University nor the names of its contributors 211849Swollman * may be used to endorse or promote products derived from this software 221849Swollman * without specific prior written permission. 231849Swollman * 241849Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251849Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261849Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271849Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281849Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291849Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301849Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311849Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321849Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331849Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341849Swollman * SUCH DAMAGE. 3592999Sobrien * 3692999Sobrien * @(#)setjmp.s 5.1 (Berkeley) 4/23/90" 371849Swollman */ 381849Swollman 3992999Sobrien#if defined(LIBC_SCCS) && !defined(lint) 405790Sdg .text 4192999Sobrien .asciz "$Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $" 4292999Sobrien#endif /* LIBC_SCCS and not lint */ 4392999Sobrien#include <machine/asm.h> 4492999Sobrien__FBSDID("$FreeBSD: head/lib/libc/amd64/gen/sigsetjmp.S 115745 2003-06-02 22:37:53Z peter $"); 451849Swollman 461849Swollman#include "SYS.h" 471849Swollman 483851Sbde/*- 493851Sbde * TODO: 503851Sbde * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 513851Sbde * remove the other *jmp functions and define everything in terms 523851Sbde * of the renamed functions. This requires compiler support for 533851Sbde * the renamed functions (introduced in gcc-2.5.3; previous versions 543851Sbde * only supported *jmp with 0 or 1 leading underscores). 553851Sbde * 563851Sbde * Restore _all_ the registers and the signal mask atomically. Can 573851Sbde * use sigreturn() if sigreturn() works. 583851Sbde */ 593851Sbde 6056345SjasoneENTRY(sigsetjmp) 61115745Speter movl %esi,88(%rdi) /* 11; savemask */ 62114309Speter testl %esi,%esi 6315731Sjdp jz 2f 64114829Speter pushq %rdi 65115738Speter movq %rdi,%rcx 66114829Speter movq $1,%rdi /* SIG_BLOCK */ 67114309Speter movq $0,%rsi /* (sigset_t*)set */ 68115745Speter leaq 72(%rcx),%rdx /* 9,10 (sigset_t*)oset */ 6971579Sdeischen call PIC_PLT(CNAME(_sigprocmask)) 70114309Speter popq %rdi 71114829Speter2: movq %rdi,%rcx 72114829Speter movq 0(%rsp),%rdx /* retval */ 73115745Speter movq %rdx, 0(%rcx) /* 0; retval */ 74115745Speter movq %rbx, 8(%rcx) /* 1; rbx */ 75115745Speter movq %rsp,16(%rcx) /* 2; rsp */ 76115745Speter movq %rbp,24(%rcx) /* 3; rbp */ 77115745Speter movq %r12,32(%rcx) /* 4; r12 */ 78115745Speter movq %r13,40(%rcx) /* 5; r13 */ 79115745Speter movq %r14,48(%rcx) /* 6; r14 */ 80115745Speter movq %r15,56(%rcx) /* 7; r15 */ 81115745Speter fnstcw 64(%rcx) /* 8; fpu cw */ 82114309Speter xorq %rax,%rax 831849Swollman ret 841849Swollman 85114309Speter .weak CNAME(siglongjmp) 86114309Speter .set CNAME(siglongjmp),CNAME(__siglongjmp) 87114309SpeterENTRY(__siglongjmp) 88114309Speter cmpl $0,88(%rdi) 8915731Sjdp jz 2f 90114309Speter movq %rdi,%rdx 91114309Speter pushq %rdi 92114309Speter pushq %rsi 93114829Speter movq $3,%rdi /* SIG_SETMASK */ 94114309Speter leaq 72(%rdx),%rsi /* (sigset_t*)set */ 95114829Speter movq $0,%rdx /* (sigset_t*)oset */ 9671579Sdeischen call PIC_PLT(CNAME(_sigprocmask)) 97114309Speter popq %rsi 98114309Speter popq %rdi /* jmpbuf */ 99114309Speter2: movq %rdi,%rdx 100114309Speter movq %rsi,%rax /* retval */ 101114309Speter movq 0(%rdx),%rcx 102114309Speter movq 8(%rdx),%rbx 103114309Speter movq 16(%rdx),%rsp 104114309Speter movq 24(%rdx),%rbp 105114309Speter movq 32(%rdx),%r12 106114309Speter movq 40(%rdx),%r13 107114309Speter movq 48(%rdx),%r14 108114309Speter movq 56(%rdx),%r15 1093851Sbde fninit 110114309Speter fldcw 64(%rdx) 111114309Speter testq %rax,%rax 11215731Sjdp jnz 1f 113114309Speter incq %rax 114114309Speter1: movq %rcx,0(%rsp) 1151849Swollman ret 116