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| author | Chris Zankel <chris@zankel.net> | 2008-02-20 00:30:54 +0000 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2008-02-20 00:30:54 +0000 |
| commit | d8f106289ffc338f15568f373b209f0c47755a54 (patch) | |
| tree | 68d366e9f056bd36acb747c69cd02e5d595e2467 /libc/sysdeps/linux/xtensa/sigrestorer.S | |
| parent | 5bb327a1dbe37208a812a9134763aa5adfa90e12 (diff) | |
Xtensa: Provide an architecture specific sigaction and sa_restorer function in libc to avoid having to place executable code on stack.
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'libc/sysdeps/linux/xtensa/sigrestorer.S')
| -rw-r--r-- | libc/sysdeps/linux/xtensa/sigrestorer.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/xtensa/sigrestorer.S b/libc/sysdeps/linux/xtensa/sigrestorer.S new file mode 100644 index 000000000..474a89319 --- /dev/null +++ b/libc/sysdeps/linux/xtensa/sigrestorer.S @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2008 Tensilica Inc. + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> + +#if __NR_rt_sigreturn > 255 +# error value of __NR_rt_sigreturn is too big! +#endif + + .text + .align 4 + .global __default_sa_restorer + .type __default_sa_restorer, @function +__default_sa_restorer: + movi a2, __NR_rt_sigreturn + syscall |