1/* Copyright (C) 1997-2025 Free Software Foundation, Inc.
 2   This file is part of the GNU C Library.
 3
 4   The GNU C Library is free software; you can redistribute it and/or
 5   modify it under the terms of the GNU Lesser General Public
 6   License as published by the Free Software Foundation; either
 7   version 2.1 of the License, or (at your option) any later version.
 8
 9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18/* Define the machine-dependent type `jmp_buf'.  PowerPC version.  */
19#ifndef _BITS_SETJMP_H
20#define _BITS_SETJMP_H  1
21
22#if !defined _SETJMP_H && !defined _PTHREAD_H
23# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
24#endif
25
26/* The previous bits/setjmp.h had __jmp_buf defined as a structure.
27   We use an array of 'long int' instead, to make writing the
28   assembler easier. Naturally, user code should not depend on
29   either representation. */
30
31#include <bits/wordsize.h>
32
33/* The current powerpc 32-bit Altivec ABI specifies for SVR4 ABI and EABI
34   the vrsave must be at byte 248 & v20 at byte 256.  So we must pad this
35   correctly on 32 bit.  It also insists that vecregs are only guaranteed
36   4 byte alignment so we need to use vperm in the setjmp/longjmp routines.
37   We have to version the code because members like  int __mask_was_saved
38   in the jmp_buf will move as jmp_buf is now larger than 248 bytes.  We
39   cannot keep the altivec jmp_buf backward compatible with the jmp_buf.  */
40#ifndef	_ASM
41# if __WORDSIZE == 64
42typedef long int __jmp_buf[64] __attribute__ ((__aligned__ (16)));
43# else
44/* The alignment is not essential, i.e.the buffer can be copied to a 4 byte
45   aligned buffer as per the ABI it is just added for performance reasons.  */
46typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16)));
47# endif
48#endif
49
50#endif  /* bits/setjmp.h */