133 lines
5.2 KiB
C
133 lines
5.2 KiB
C
/* Copyright (C) 1991-1999, 2001, 2002, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* Copied from setjmp/setjmp.h, powerpc/bits/setjmp.h and modified
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appropriately to keep backward compatible with setjmp without
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AltiVec/VMX support.
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This file is not exported and the interfaces are private to libc. */
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#ifndef __NOVMX_SETJMP_H
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#define __NOVMX_SETJMP_H 1
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#include <bits/wordsize.h>
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/* The following definitions are needed by ASM implementations of the old
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(novmx) __longjmp/__setjmp functions. */
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# define JB_GPR1 0 /* Also known as the stack pointer */
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# define JB_GPR2 1
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# define JB_LR 2 /* The address we will return to */
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# if __WORDSIZE == 64
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# define JB_GPRS 3 /* GPRs 14 through 31 are saved, 18*2 words total. */
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# define JB_CR 21 /* Condition code registers. */
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# define JB_FPRS 22 /* FPRs 14 through 31 are saved, 18*2 words total. */
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# define JB_SIZE (40 * 8)
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# else
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# define JB_GPRS 3 /* GPRs 14 through 31 are saved, 18 in total. */
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# define JB_CR 21 /* Condition code registers. */
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# define JB_FPRS 22 /* FPRs 14 through 31 are saved, 18*2 words total. */
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# define JB_SIZE (58 * 4)
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# endif
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#ifndef _ASM
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/* The following definitions are needed by the novmx* implementations of
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setjmp/longjmp/sigsetjmp/etc that wrapper __setjmp/__longjmp. */
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# if __WORDSIZE == 64
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typedef long int __jmp_buf[40];
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# else
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typedef long int __jmp_buf[58];
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# endif
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# include <bits/sigset.h> /* Get `__sigset_t'. */
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/* Calling environment, plus possibly a saved signal mask. */
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typedef struct __novmx__jmp_buf_tag
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{
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/* NOTE: The machine-dependent definitions of `__sigsetjmp'
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assume that a `jmp_buf' begins with a `__jmp_buf' and that
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`__mask_was_saved' follows it. Do not move these members
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or add others before it. */
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__jmp_buf __jmpbuf; /* Calling environment. */
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int __mask_was_saved; /* Saved the signal mask? */
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__sigset_t __saved_mask; /* Saved signal mask. */
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} __novmx__jmp_buf[1];
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/* Store the calling environment in ENV, also saving the signal mask.
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Return 0. */
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extern int __novmxsetjmp (__novmx__jmp_buf __env);
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/* Store the calling environment in ENV, also saving the
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signal mask if SAVEMASK is nonzero. Return 0.
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This is the internal name for `sigsetjmp'. */
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extern int __novmx__sigsetjmp (struct __novmx__jmp_buf_tag __env[1],
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int __savemask);
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/* Store the calling environment in ENV, not saving the signal mask.
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Return 0. */
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extern int __novmx_setjmp (struct __novmx__jmp_buf_tag __env[1]);
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/* Jump to the environment saved in ENV, making the
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`setjmp' call there return VAL, or 1 if VAL is 0. */
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extern void __novmxlongjmp (struct __novmx__jmp_buf_tag __env[1], int __val)
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__attribute__ ((__noreturn__));
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/* Same. Usually `_longjmp' is used with `_setjmp', which does not save
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the signal mask. But it is how ENV was saved that determines whether
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`longjmp' restores the mask; `_longjmp' is just an alias. */
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extern void __novmx_longjmp (struct __novmx__jmp_buf_tag __env[1], int __val)
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__attribute__ ((__noreturn__));
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/* Use the same type for `jmp_buf' and `sigjmp_buf'.
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The `__mask_was_saved' flag determines whether
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or not `longjmp' will restore the signal mask. */
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typedef struct __novmx__jmp_buf_tag __novmx__sigjmp_buf[1];
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/* Jump to the environment saved in ENV, making the
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sigsetjmp call there return VAL, or 1 if VAL is 0.
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Restore the signal mask if that sigsetjmp call saved it.
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This is just an alias `longjmp'. */
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extern void __novmxsiglongjmp (__novmx__sigjmp_buf __env, int __val)
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__attribute__ ((__noreturn__));
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/* Internal machine-dependent function to restore context sans signal mask. */
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extern void __novmx__longjmp (__jmp_buf __env, int __val)
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__attribute__ ((__noreturn__));
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/* Internal function to possibly save the current mask of blocked signals
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in ENV, and always set the flag saying whether or not it was saved.
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This is used by the machine-dependent definition of `__sigsetjmp'.
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Always returns zero, for convenience. */
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extern int __novmx__sigjmp_save (__novmx__jmp_buf __env, int __savemask);
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extern void _longjmp_unwind (__novmx__jmp_buf env, int val);
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extern void __novmx__libc_siglongjmp (__novmx__sigjmp_buf env, int val)
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__attribute__ ((noreturn));
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extern void __novmx__libc_longjmp (__novmx__sigjmp_buf env, int val)
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__attribute__ ((noreturn));
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libc_hidden_proto (__novmx__libc_longjmp)
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libc_hidden_proto (__novmx_setjmp)
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libc_hidden_proto (__novmx__sigsetjmp)
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#endif /* !_ASM */
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#endif
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