projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 17030342 MD |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * William Jolitz. | |
| 7 | * | |
| 8 | * Redistribution and use in source and binary forms, with or without | |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| 17030342 MD |
16 | * 4. Neither the name of the University nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software | |
| 18 | * without specific prior written permission. | |
| 19 | * | |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | * SUCH DAMAGE. | |
| 31 | * | |
| eb9f4715 | 32 | * @(#)setjmp.s 5.1 (Berkeley) 4/23/90 |
| 17030342 | 33 | * $Id: sigsetjmp.S,v 1.1 1993/12/05 13:01:05 ats Exp $ |
| eb9f4715 | 34 | * $FreeBSD: src/lib/libc/amd64/gen/sigsetjmp.S,v 1.30 2008/11/02 01:10:54 peter Exp $ |
| 17030342 MD |
35 | */ |
| 36 | ||
| 37 | #include <machine/asm.h> | |
| 17030342 MD |
38 | #include "SYS.h" |
| 39 | ||
| 40 | /*- | |
| 41 | * TODO: | |
| 42 | * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, | |
| 43 | * remove the other *jmp functions and define everything in terms | |
| 44 | * of the renamed functions. This requires compiler support for | |
| 45 | * the renamed functions (introduced in gcc-2.5.3; previous versions | |
| 46 | * only supported *jmp with 0 or 1 leading underscores). | |
| 47 | * | |
| 48 | * Restore _all_ the registers and the signal mask atomically. Can | |
| 49 | * use sigreturn() if sigreturn() works. | |
| 50 | */ | |
| 51 | ||
| 52 | ENTRY(sigsetjmp) | |
| 53 | movl %esi,88(%rdi) /* 11; savemask */ | |
| 54 | testl %esi,%esi | |
| 55 | jz 2f | |
| 56 | pushq %rdi | |
| 57 | movq %rdi,%rcx | |
| 58 | movq $1,%rdi /* SIG_BLOCK */ | |
| 59 | movq $0,%rsi /* (sigset_t*)set */ | |
| 60 | leaq 72(%rcx),%rdx /* 9,10 (sigset_t*)oset */ | |
| 61 | call PIC_PLT(CNAME(_sigprocmask)) | |
| 62 | popq %rdi | |
| 63 | 2: movq %rdi,%rcx | |
| 64 | movq 0(%rsp),%rdx /* retval */ | |
| 65 | movq %rdx, 0(%rcx) /* 0; retval */ | |
| 66 | movq %rbx, 8(%rcx) /* 1; rbx */ | |
| 67 | movq %rsp,16(%rcx) /* 2; rsp */ | |
| 68 | movq %rbp,24(%rcx) /* 3; rbp */ | |
| 69 | movq %r12,32(%rcx) /* 4; r12 */ | |
| 70 | movq %r13,40(%rcx) /* 5; r13 */ | |
| 71 | movq %r14,48(%rcx) /* 6; r14 */ | |
| 72 | movq %r15,56(%rcx) /* 7; r15 */ | |
| 73 | fnstcw 64(%rcx) /* 8; fpu cw */ | |
| 74 | xorq %rax,%rax | |
| 75 | ret | |
| eb9f4715 | 76 | END(sigsetjmp) |
| 17030342 MD |
77 | |
| 78 | .weak CNAME(siglongjmp) | |
| 79 | .set CNAME(siglongjmp),CNAME(__siglongjmp) | |
| 80 | ENTRY(__siglongjmp) | |
| 81 | cmpl $0,88(%rdi) | |
| 82 | jz 2f | |
| 83 | movq %rdi,%rdx | |
| 84 | pushq %rdi | |
| 85 | pushq %rsi | |
| 86 | movq $3,%rdi /* SIG_SETMASK */ | |
| 87 | leaq 72(%rdx),%rsi /* (sigset_t*)set */ | |
| 88 | movq $0,%rdx /* (sigset_t*)oset */ | |
| 89 | call PIC_PLT(CNAME(_sigprocmask)) | |
| 90 | popq %rsi | |
| 91 | popq %rdi /* jmpbuf */ | |
| 92 | 2: movq %rdi,%rdx | |
| 93 | movq %rsi,%rax /* retval */ | |
| 94 | movq 0(%rdx),%rcx | |
| 95 | movq 8(%rdx),%rbx | |
| 96 | movq 16(%rdx),%rsp | |
| 97 | movq 24(%rdx),%rbp | |
| 98 | movq 32(%rdx),%r12 | |
| 99 | movq 40(%rdx),%r13 | |
| 100 | movq 48(%rdx),%r14 | |
| 101 | movq 56(%rdx),%r15 | |
| 102 | fninit | |
| 103 | fldcw 64(%rdx) | |
| 104 | testq %rax,%rax | |
| 105 | jnz 1f | |
| 106 | incq %rax | |
| 107 | 1: movq %rcx,0(%rsp) | |
| 108 | ret | |
| eb9f4715 | 109 | END(__siglongjmp) |