diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/bits/setjmp.h')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/bits/setjmp.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/bits/setjmp.h b/REORG.TODO/sysdeps/powerpc/bits/setjmp.h new file mode 100644 index 0000000000..02568951e9 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/bits/setjmp.h @@ -0,0 +1,50 @@ +/* Copyright (C) 1997-2017 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 */ |