| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Copyright (C) 1997-2016 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 | <http://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 gauranteed |
| 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 |
| 42 | typedef 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. */ |
| 46 | typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16))); |
| 47 | # endif |
| 48 | #endif |
| 49 | |
| 50 | #endif /* bits/setjmp.h */ |