diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/m68k/m680x0/getcontext.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/m680x0/getcontext.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/m680x0/getcontext.S b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/getcontext.S new file mode 100644 index 0000000000..4f31d2afc8 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/getcontext.S @@ -0,0 +1,63 @@ +/* Save current context. + Copyright (C) 2012 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 <sysdep.h> + +#include "ucontext_i.h" + + +ENTRY(__getcontext) + /* Load address of the context data structure. */ + move.l 4(%sp), %a0 + + /* Save the preserved registers and the return address. */ + movem.l %d2-%d7, oGREGS+2*4(%a0) + movem.l %a2-%a6, oGREGS+10*4(%a0) + lea 4(%sp), %a1 + move.l %a1, oSP(%a0) + move.l (%sp), oPC(%a0) + fmovem.l %fpsr/%fpcr/%fpiar, oFPREGS(%a0) + fmovem.x %fp2-%fp7, oFP2(%a0) + cfi_def_cfa (%a0, 0) + cfi_offset (%d2, oGREGS+2*4) + cfi_offset (%d3, oGREGS+3*4) + cfi_offset (%pc, oPC) + + /* Save the current signal mask. */ + lea oSIGMASK(%a0), %a1 + move.l %a1, %d3 + clr.l %d2 + move.l #SIG_SETMASK, %d1 + move.l #__NR_sigprocmask, %d0 + trap #0 + /* Restore registers. */ + move.l oGREGS+2*4(%a0), %d2 + cfi_restore (%d2) + move.l oGREGS+3*4(%a0), %d3 + cfi_restore (%d3) + cfi_def_cfa (%sp, 4) + cfi_offset (%pc, -4) + cmp.l #-4095, %d0 /* Check %d0 for error. */ + jcc SYSCALL_ERROR_LABEL /* Jump to error handler. */ + +0: /* All done, return 0 for success. */ + clr.l %d0 + rts +PSEUDO_END(__getcontext) + +weak_alias (__getcontext, getcontext) |