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author | David S. Miller <davem@davemloft.net> | 2012-11-07 21:00:09 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2012-11-07 21:01:06 -0800 |
commit | 60e8270d6ca19ddb351fb78e979ae908076e2d4b (patch) | |
tree | e334c98b32274bb297aea1334171c14186ca553b /sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S | |
parent | 0fbb0fbc2e6cb8f76364a88f512aa880d40a8f40 (diff) | |
download | glibc-60e8270d6ca19ddb351fb78e979ae908076e2d4b.tar.gz glibc-60e8270d6ca19ddb351fb78e979ae908076e2d4b.tar.xz glibc-60e8270d6ca19ddb351fb78e979ae908076e2d4b.zip |
Fix NULL ucontext->uc_link handling on sparc64.
* sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/makecontext.c (__start_context): Declare. (__makecontext_ret): Delete. (__makecontext): Hook up __start_context instead of __makecontext_ret. * sysdeps/unix/sysv/linux/sparc/sparc64/Makefile (sysdep_routines): Add __start_context when in stdlib.
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S b/sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S new file mode 100644 index 0000000000..f1d1adc862 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/__start_context.S @@ -0,0 +1,36 @@ +/* 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> + + .text + +/* This is the helper code which gets called if a function which is + registered with 'makecontext' returns. In this case we have to + install the context listed in the uc_link element of the context + 'makecontext' manipulated at the time of the 'makecontext' call. + If the pointer is NULL the process must terminate. */ + +ENTRY(__start_context) + brz,pn %i0, 1f + mov 1, %o1 + call __setcontext + mov %i0, %o0 +1: call HIDDEN_JUMPTARGET(exit) + mov 0, %o0 + unimp 0 +END(__start_context) |