diff options
Diffstat (limited to 'sysdeps/m68k/setjmp.c')
-rw-r--r-- | sysdeps/m68k/setjmp.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/m68k/setjmp.c b/sysdeps/m68k/setjmp.c new file mode 100644 index 0000000000..cf742eecd0 --- /dev/null +++ b/sysdeps/m68k/setjmp.c @@ -0,0 +1,70 @@ +/* Copyright (C) 1991-2014 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/>. */ + +#include <setjmp.h> + +/* Save the current program position in ENV and return 0. */ +int +#if defined BSD_SETJMP +# undef setjmp +# define savemask 1 +setjmp (jmp_buf env) +#elif defined BSD__SETJMP +# undef _setjmp +# define savemask 0 +_setjmp (jmp_buf env) +#else +__sigsetjmp (jmp_buf env, int savemask) +#endif +{ + /* 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] = __builtin_return_address (0); + + /* 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 = *(int **) __builtin_frame_address (0); + + /* Save caller's SP, not our own. */ + env[0].__jmpbuf[0].__sp = (int *) __builtin_frame_address (0) + 2; + +#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])); +#elif defined (__mcffpu__) + asm volatile ("fmovem %/fp0-%/fp7, %0" + : : "m" (env[0].__jmpbuf[0].__fpregs[0])); +#endif + +#if defined NOT_IN_libc && defined IS_IN_rtld + /* In ld.so we never save the signal mask. */ + return 0; +#else + /* Save the signal mask if requested. */ + return __sigjmp_save (env, savemask); +#endif +} +#if !defined BSD_SETJMP && !defined BSD__SETJMP +libc_hidden_def (__sigsetjmp) +#endif |