| /* Copyright (C) 1991-2018 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/>. */ |
| |
| /* 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/types/__sigset_t.h> |
| |
| /* 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 (__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 |