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author | Ulrich Drepper <drepper@redhat.com> | 2001-04-19 16:31:12 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2001-04-19 16:31:12 +0000 |
commit | 9bab980687708a6038f894aab30f303084aefa86 (patch) | |
tree | 02e4fca7778b3dd3c38288bd8004586cc0e0f816 /sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c | |
parent | 0b35a2da19eb7b598a88cc6daf4ad06d6c5615dd (diff) | |
download | glibc-9bab980687708a6038f894aab30f303084aefa86.tar.gz glibc-9bab980687708a6038f894aab30f303084aefa86.tar.xz glibc-9bab980687708a6038f894aab30f303084aefa86.zip |
Update.
2001-04-18 Jakub Jelinek <jakub@redhat.com> * sysdeps/sparc/sparc64/fpu/libm-test-ulps: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/makecontext.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/setcontext.S (__setcontext): Copy first word of uc_sigmask into __uc_sigmask. * sysdeps/unix/sysv/linux/sparc/sparc64/getcontext.S (__getcontext): Save uc_link around trap. Copy __uc_sigmask into first word of uc_sigmask, clear the rest. Make sure setcontext to the created context doesn't do this though. * sysdeps/unix/sysv/linux/sparc/sparc64/ucontext_i.h: New file. * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h (ucontext_t): Add uc_stack and uc_sigmask, rename old uc_sigmask to __uc_sigmask in the 64bit version, make uc_sigmask __sigset_t in the 32bit version. * rt/Makefile (otherlibs): Added for static NSS. * glibcbug.in (BUGGLIBC): Send to new alias.
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c b/sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c new file mode 100644 index 0000000000..141c74663f --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/swapcontext.c @@ -0,0 +1,48 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <ucontext.h> + +extern int __getcontext (ucontext_t *ucp); +extern int __setcontext (const ucontext_t *ucp, int restoremask); + +int +__swapcontext (ucontext_t *oucp, const ucontext_t *ucp) +{ + extern void __swapcontext_ret (void); + /* Save the current machine context to oucp. */ + __getcontext (oucp); + /* Modify oucp to skip the __setcontext call on reactivation. */ + oucp->uc_mcontext.mc_gregs[MC_PC] = (long) __swapcontext_ret; + oucp->uc_mcontext.mc_gregs[MC_NPC] = ((long) __swapcontext_ret) + 4; + /* Restore the machine context in ucp. */ + __setcontext (ucp, 1); + return 0; +} + +asm (" \n\ + .text \n\ + .type __swapcontext_ret, #function \n\ +__swapcontext_ret: \n\ + return %i7 + 8 \n\ + clr %o0 \n\ + .size __swapcontext_ret, .-__swapcontext_ret \n\ + "); + +weak_alias (__swapcontext, swapcontext) |