diff options
Diffstat (limited to 'libc/sysdeps/mach/hurd/alpha/longjmp-ts.c')
-rw-r--r-- | libc/sysdeps/mach/hurd/alpha/longjmp-ts.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libc/sysdeps/mach/hurd/alpha/longjmp-ts.c b/libc/sysdeps/mach/hurd/alpha/longjmp-ts.c new file mode 100644 index 000000000..f472dbcb3 --- /dev/null +++ b/libc/sysdeps/mach/hurd/alpha/longjmp-ts.c @@ -0,0 +1,49 @@ +/* Perform a `longjmp' on a Mach thread_state. Alpha version. + Copyright (C) 2002, 2006 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <hurd/signal.h> +#include <setjmp.h> +#include <jmpbuf-offsets.h> +#include <mach/thread_status.h> + + +/* Set up STATE to do the equivalent of `longjmp (ENV, VAL);'. */ + +void +_hurd_longjmp_thread_state (void *state, jmp_buf env, int val) +{ + struct alpha_thread_state *const ts = state; + + ts->r9 = env[0].__jmpbuf[JB_S0]; + ts->r10 = env[0].__jmpbuf[JB_S1]; + ts->r11 = env[0].__jmpbuf[JB_S2]; + ts->r12 = env[0].__jmpbuf[JB_S3]; + ts->r13 = env[0].__jmpbuf[JB_S4]; + ts->r13 = env[0].__jmpbuf[JB_S5]; + ts->pc = env[0].__jmpbuf[JB_PC]; + ts->r15 = env[0].__jmpbuf[JB_FP]; + ts->r30 = env[0].__jmpbuf[JB_SP]; + ts->r0 = val ?: 1; + + /* XXX + To mimic longjmp we ought to restore some fp registers too. + But those registers are in struct alpha_float_state. + The only use of this is in fork, and it probably won't matter. + */ +} |