diff options
Diffstat (limited to 'module/lua/setjmp/setjmp_x86_64.S')
| -rw-r--r-- | module/lua/setjmp/setjmp_x86_64.S | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/module/lua/setjmp/setjmp_x86_64.S b/module/lua/setjmp/setjmp_x86_64.S new file mode 100644 index 000000000000..a469cbad780e --- /dev/null +++ b/module/lua/setjmp/setjmp_x86_64.S @@ -0,0 +1,77 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. + */ + + +#define ENTRY(x) \ + .text; \ + .align 8; \ + .globl x; \ + .type x, @function; \ +x: + +#define SET_SIZE(x) \ + .size x, [.-x] + + +/* + * Setjmp and longjmp implement non-local gotos using state vectors + * type label_t. + */ +#ifdef __x86_64__ + + ENTRY(setjmp) + movq %rsp, 0(%rdi) + movq %rbp, 8(%rdi) + movq %rbx, 16(%rdi) + movq %r12, 24(%rdi) + movq %r13, 32(%rdi) + movq %r14, 40(%rdi) + movq %r15, 48(%rdi) + movq 0(%rsp), %rdx /* return address */ + movq %rdx, 56(%rdi) /* rip */ + xorl %eax, %eax /* return 0 */ + ret + SET_SIZE(setjmp) + + ENTRY(longjmp) + movq 0(%rdi), %rsp + movq 8(%rdi), %rbp + movq 16(%rdi), %rbx + movq 24(%rdi), %r12 + movq 32(%rdi), %r13 + movq 40(%rdi), %r14 + movq 48(%rdi), %r15 + movq 56(%rdi), %rdx /* return address */ + movq %rdx, 0(%rsp) + xorl %eax, %eax + incl %eax /* return 1 */ + ret + SET_SIZE(longjmp) + +#ifdef __ELF__ +.section .note.GNU-stack,"",%progbits +#endif + +#endif /* __x86_64__ */ |