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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(__old_sigsetjmp, (env, savemask), sigjmp_buf env AND int savemask)
- {
- if (savemask)
- env[0].__mask_was_saved = sigprocmask(SIG_BLOCK, (sigset_t *) NULL,
- &env[0].__saved_mask) == 0;
- else
- env[0].__mask_was_saved = 0;
-
- /* Save data registers D1 through D7. */
- asm volatile("movem%.l d1-d7, %0" : : "m" (env[0].__jmpbuf[0].__dregs[0]));
-
- /* Save return address in place of register A0. */
- env[0].__jmpbuf[0].__aregs[0] = (PTR) ((PTR *) &env)[-1];
-
- /* Save address registers A1 through A5. */
- asm volatile("movem%.l a1-a5, %0" : : "m" (env[0].__jmpbuf[0].__aregs[1]));
-
- /* Save caller's FP, not our own. */
- env[0].__jmpbuf[0].__fp = (PTR) ((PTR *) &env)[-2];
-
- /* XXX FIX ME */
- /*
- * The Amiga GCC uses A5 as the frame pointer, rather than A6, so this
- * code loses on that compiler, since this code expects A6 to be the
- * frame pointer.
- * This change fix will only be compiled occur if __amiga__ is defined.
- *
- * The long term solution is to create a "linux/68k" gcc which uses a6
- * as the frame pointer.
- */
-
- #ifdef __amiga__
- env[0].__jmpbuf[0].__aregs[5] = env[0].__jmpbuf[0].__fp;
- asm volatile ("move%.l a6, %0" : : "m" (env[0].__jmpbuf[0].__fp));
- #endif
-
- /* XXX */
-
- /* Save caller's SP, not our own. */
- env[0].__jmpbuf[0].__sp = (PTR) &env;
-
- #if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
- /* Save floating-point (68881) registers FP0 through FP7. */
- asm volatile("fmovem%.x fp0-fp7, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
- #endif
-
- return 0;
- }
-