diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-03-10 13:46:33 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-03-28 16:27:11 +0100 |
| commit | 7f3cc4ea1d996aa18602b6df019af446165cb183 (patch) | |
| tree | a72600a6666664cb96580dba1b964d2df67bd68b | |
| parent | bcc9ec2c0ad0a8a4dbf2d0d6d374cb9278a50bf0 (diff) | |
setjmp: Add 64bit variant
* x86_64/_setjmp.S: New file
* i386/i386/setjmp.h (jmp_buf): Add 64bit variant.
| -rw-r--r-- | i386/i386/setjmp.h | 4 | ||||
| -rw-r--r-- | x86_64/_setjmp.S | 65 |
2 files changed, 69 insertions, 0 deletions
diff --git a/i386/i386/setjmp.h b/i386/i386/setjmp.h index 930a9dd5..0db56ae1 100644 --- a/i386/i386/setjmp.h +++ b/i386/i386/setjmp.h @@ -30,7 +30,11 @@ #define _I386_SETJMP_H_ typedef struct jmp_buf { +#ifdef __i386__ int jmp_buf[6]; /* ebx, esi, edi, ebp, esp, eip */ +#else + long jmp_buf[8]; /* rbx, rbp, r12, r13, r14, r15, rsp, rip */ +#endif } jmp_buf_t; extern int _setjmp(jmp_buf_t*); diff --git a/x86_64/_setjmp.S b/x86_64/_setjmp.S new file mode 100644 index 00000000..5714f435 --- /dev/null +++ b/x86_64/_setjmp.S @@ -0,0 +1,65 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990,1989 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ +/* + * C library -- _setjmp, _longjmp + * + * _longjmp(a,v) + * will generate a "return(v)" from + * the last call to + * _setjmp(a) + * by restoring registers from the stack, + * The previous signal state is NOT restored. + * + */ + +#include <mach/machine/asm.h> + +ENTRY(_setjmp) + movq %rbx,0(%rdi) + movq %rbp,8(%rdi) /* save frame pointer of caller */ + movq %r12,16(%rdi) + movq %r13,24(%rdi) + movq %r14,32(%rdi) + movq %r15,40(%rdi) + popq %rdx + movq %rsp,48(%rdi) /* save stack pointer of caller */ + movq %rdx,56(%rdi) /* save pc of caller */ + xorq %rax,%rax + jmp *%rdx + +ENTRY(_longjmp) + movq %rsi,%rax /* return(v) */ + movq 0(%rdi),%rbx + movq 8(%rdi),%rbp + movq 16(%rdi),%r12 + movq 24(%rdi),%r13 + movq 32(%rdi),%r14 + movq 40(%rdi),%r15 + movq 48(%rdi),%rsp + orq %rax,%rax + jnz 0f + incq %rax +0: jmp *56(%rdi) /* done, return.... */ |