mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
51 lines
2.1 KiB
C
51 lines
2.1 KiB
C
/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* Define the machine-dependent type `jmp_buf'. PowerPC version. */
|
|
#ifndef _BITS_SETJMP_H
|
|
#define _BITS_SETJMP_H 1
|
|
|
|
#if !defined _SETJMP_H && !defined _PTHREAD_H
|
|
# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
|
|
#endif
|
|
|
|
/* The previous bits/setjmp.h had __jmp_buf defined as a structure.
|
|
We use an array of 'long int' instead, to make writing the
|
|
assembler easier. Naturally, user code should not depend on
|
|
either representation. */
|
|
|
|
#include <bits/wordsize.h>
|
|
|
|
/* The current powerpc 32-bit Altivec ABI specifies for SVR4 ABI and EABI
|
|
the vrsave must be at byte 248 & v20 at byte 256. So we must pad this
|
|
correctly on 32 bit. It also insists that vecregs are only gauranteed
|
|
4 byte alignment so we need to use vperm in the setjmp/longjmp routines.
|
|
We have to version the code because members like int __mask_was_saved
|
|
in the jmp_buf will move as jmp_buf is now larger than 248 bytes. We
|
|
cannot keep the altivec jmp_buf backward compatible with the jmp_buf. */
|
|
#ifndef _ASM
|
|
# if __WORDSIZE == 64
|
|
typedef long int __jmp_buf[64] __attribute__ ((__aligned__ (16)));
|
|
# else
|
|
/* The alignment is not essential, i.e.the buffer can be copied to a 4 byte
|
|
aligned buffer as per the ABI it is just added for performance reasons. */
|
|
typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16)));
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* bits/setjmp.h */
|