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- /* Copyright (C) 1991, 1992 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 Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <stddef.h>
- #include <setjmp.h>
- #include <signal.h>
-
- /* Store the calling environment in ENV, also saving the
- signal mask if SAVEMASK is nonzero. Return 0. */
- int
- DEFUN(sigsetjmp, (env, savemask), sigjmp_buf env AND int savemask)
- {
- if (savemask)
- #ifdef linux
- env[0].__sigmask = __siggetmask(), env[0].__savemask = 1;
- #else
- env[0].__savemask = sigprocmask(SIG_BLOCK, (sigset_t *) NULL,
- &env[0].__sigmask) == 0;
- #endif
- else
- env[0].__savemask = 0;
-
- #define REGS \
- REG (bx);\
- REG (si);\
- REG (di)
-
- /* Save the general registers. */
- #define REG(xx) asm volatile ("movl %%e" #xx ",%0" : \
- "=m" ((long int) ((env[0].__jmpbuf)[0].__##xx)) : )
- REGS;
-
- /* Save the return PC. */
- (env[0].__jmpbuf)[0].__pc = (PTR) ((PTR *) &env)[-1];
-
- /* Save caller's FP, not our own. */
- (env[0].__jmpbuf)[0].__bp = (PTR) ((PTR *) &env)[-2];
-
- /* Save caller's SP, not our own. */
- (env[0].__jmpbuf)[0].__sp = (PTR) &env;
-
- return 0;
- }
-