setjmp_x86_64.S

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    1 /*
    2  * CDDL HEADER START
    3  *
    4  * The contents of this file are subject to the terms of the
    5  * Common Development and Distribution License (the "License").
    6  * You may not use this file except in compliance with the License.
    7  *
    8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
    9  * or https://opensource.org/licenses/CDDL-1.0.
   10  * See the License for the specific language governing permissions
   11  * and limitations under the License.
   12  *
   13  * When distributing Covered Code, include this CDDL HEADER in each
   14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   15  * If applicable, add the following below this CDDL HEADER, with the
   16  * fields enclosed by brackets "[]" replaced with your own identifying
   17  * information: Portions Copyright [yyyy] [name of copyright owner]
   18  *
   19  * CDDL HEADER END
   20  */
   21 
   22 /*
   23  * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
   24  */
   25 
   26 #if defined(_KERNEL) && defined(__linux__)
   27 #include <linux/linkage.h>
   28 #endif
   29 
   30 /*
   31  * Setjmp and longjmp implement non-local gotos using state vectors
   32  * type label_t.
   33  */
   34 #ifdef __x86_64__
   35 
   36 #define _ASM
   37 #include <sys/asm_linkage.h>
   38 
   39 ENTRY_ALIGN(setjmp, 8)
   40         movq    %rsp, 0(%rdi)
   41         movq    %rbp, 8(%rdi)
   42         movq    %rbx, 16(%rdi)
   43         movq    %r12, 24(%rdi)
   44         movq    %r13, 32(%rdi)
   45         movq    %r14, 40(%rdi)
   46         movq    %r15, 48(%rdi)
   47         movq    0(%rsp), %rdx           /* return address */
   48         movq    %rdx, 56(%rdi)          /* rip */
   49         xorl    %eax, %eax              /* return 0 */
   50         RET
   51         SET_SIZE(setjmp)
   52 
   53 ENTRY_ALIGN(longjmp, 8)
   54         movq    0(%rdi), %rsp
   55         movq    8(%rdi), %rbp
   56         movq    16(%rdi), %rbx
   57         movq    24(%rdi), %r12
   58         movq    32(%rdi), %r13
   59         movq    40(%rdi), %r14
   60         movq    48(%rdi), %r15
   61         movq    56(%rdi), %rdx          /* return address */
   62         movq    %rdx, 0(%rsp)
   63         xorl    %eax, %eax
   64         incl    %eax                    /* return 1 */
   65         RET
   66         SET_SIZE(longjmp)
   67 
   68 #ifdef __ELF__
   69 .section .note.GNU-stack,"",%progbits
   70 #endif
   71 
   72 #endif /* __x86_64__ */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/module/lua/setjmp/setjmp_x86_64.S

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/module/lua/setjmp/setjmp_x86_64.S