diff options
Diffstat (limited to 'sysdeps/powerpc/novmxsetjmp.h')
| -rw-r--r-- | sysdeps/powerpc/novmxsetjmp.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/sysdeps/powerpc/novmxsetjmp.h b/sysdeps/powerpc/novmxsetjmp.h new file mode 100644 index 0000000000..da2a338257 --- /dev/null +++ b/sysdeps/powerpc/novmxsetjmp.h @@ -0,0 +1,133 @@ +/* Copyright (C) 1991-1999, 2001, 2002, 2004 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Copied from setjmp/setjmp.h, powerpc/bits/setjmp.h and modified + appropriately to keep backward compatible with setjmp without + AltiVec/VMX support. + + This file is not exported and the interfaces are private to libc. */ + +#ifndef __NOVMX_SETJMP_H +#define __NOVMX_SETJMP_H 1 + +#include <bits/wordsize.h> + +/* The following definitions are needed by ASM implementations of the old + (novmx) __longjmp/__setjmp functions. */ + +# define JB_GPR1 0 /* Also known as the stack pointer */ +# define JB_GPR2 1 +# define JB_LR 2 /* The address we will return to */ +# if __WORDSIZE == 64 +# define JB_GPRS 3 /* GPRs 14 through 31 are saved, 18*2 words total. */ +# define JB_CR 21 /* Condition code registers. */ +# define JB_FPRS 22 /* FPRs 14 through 31 are saved, 18*2 words total. */ +# define JB_SIZE (40 * 8) +# else +# define JB_GPRS 3 /* GPRs 14 through 31 are saved, 18 in total. */ +# define JB_CR 21 /* Condition code registers. */ +# define JB_FPRS 22 /* FPRs 14 through 31 are saved, 18*2 words total. */ +# define JB_SIZE (58 * 4) +# endif + +#ifndef _ASM +/* The following definitions are needed by the novmx* implementations of + setjmp/longjmp/sigsetjmp/etc that wrapper __setjmp/__longjmp. */ + +# if __WORDSIZE == 64 +typedef long int __jmp_buf[40]; +# else +typedef long int __jmp_buf[58]; +# endif + +# include <bits/sigset.h> /* Get `__sigset_t'. */ + +/* Calling environment, plus possibly a saved signal mask. */ +typedef struct __novmx__jmp_buf_tag + { + /* NOTE: The machine-dependent definitions of `__sigsetjmp' + assume that a `jmp_buf' begins with a `__jmp_buf' and that + `__mask_was_saved' follows it. Do not move these members + or add others before it. */ + __jmp_buf __jmpbuf; /* Calling environment. */ + int __mask_was_saved; /* Saved the signal mask? */ + __sigset_t __saved_mask; /* Saved signal mask. */ + } __novmx__jmp_buf[1]; + + +/* Store the calling environment in ENV, also saving the signal mask. + Return 0. */ +extern int __novmxsetjmp (__novmx__jmp_buf __env); + +/* Store the calling environment in ENV, also saving the + signal mask if SAVEMASK is nonzero. Return 0. + This is the internal name for `sigsetjmp'. */ +extern int __novmx__sigsetjmp (struct __novmx__jmp_buf_tag __env[1], + int __savemask); + +/* Store the calling environment in ENV, not saving the signal mask. + Return 0. */ +extern int __novmx_setjmp (struct __novmx__jmp_buf_tag __env[1]); + +/* Jump to the environment saved in ENV, making the + `setjmp' call there return VAL, or 1 if VAL is 0. */ +extern void __novmxlongjmp (struct __novmx__jmp_buf_tag __env[1], int __val) + __attribute__ ((__noreturn__)); + +/* Same. Usually `_longjmp' is used with `_setjmp', which does not save + the signal mask. But it is how ENV was saved that determines whether + `longjmp' restores the mask; `_longjmp' is just an alias. */ +extern void __novmx_longjmp (struct __novmx__jmp_buf_tag __env[1], int __val) + __attribute__ ((__noreturn__)); + +/* Use the same type for `jmp_buf' and `sigjmp_buf'. + The `__mask_was_saved' flag determines whether + or not `longjmp' will restore the signal mask. */ +typedef struct __novmx__jmp_buf_tag __novmx__sigjmp_buf[1]; + +/* Jump to the environment saved in ENV, making the + sigsetjmp call there return VAL, or 1 if VAL is 0. + Restore the signal mask if that sigsetjmp call saved it. + This is just an alias `longjmp'. */ +extern void __novmxsiglongjmp (__novmx__sigjmp_buf __env, int __val) + __attribute__ ((__noreturn__)); + +/* Internal machine-dependent function to restore context sans signal mask. */ +extern void __novmx__longjmp (__novmx__jmp_buf __env, int __val) + __attribute__ ((__noreturn__)); + +/* Internal function to possibly save the current mask of blocked signals + in ENV, and always set the flag saying whether or not it was saved. + This is used by the machine-dependent definition of `__sigsetjmp'. + Always returns zero, for convenience. */ +extern int __novmx__sigjmp_save (__novmx__jmp_buf __env, int __savemask); + +extern void _longjmp_unwind (__novmx__jmp_buf env, int val); + +extern void __novmx__libc_siglongjmp (__novmx__sigjmp_buf env, int val) + __attribute__ ((noreturn)); + +extern void __novmx__libc_longjmp (__novmx__sigjmp_buf env, int val) + __attribute__ ((noreturn)); + +libc_hidden_proto (__novmx__libc_longjmp) +libc_hidden_proto (__novmx_setjmp) +libc_hidden_proto (__novmx__sigsetjmp) +#endif /* !_ASM */ + +#endif |