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MIPS: Delete definition of SA_RESTORER.

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SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
supported its use and no libc was using it, so the entire sa-restorer
functionality was removed with lmo commit 39bffc12c3580ab [Zap sa_restorer.]
for 2.5.48 retaining only the SA_RESTORER definition as a reminder to avoid
accidental reuse of the mask bit.

Upstream cdef9602fbf1871a43f0f1b5cea10dd0f275167d [signal: always clear
sa_restorer on execve] adds code that assumes sa_sigaction has an
sa_restorer field, if SA_RESTORER is defined which would break MIPS.
So remove the SA_RESTORER definition before the v3.8.4 merge.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 17da8d63add23830892ac4dc2cbb3b5d4ffb79a8)
This commit is contained in:
Ralf Baechle 2013-03-25 13:43:14 +01:00
parent adb3789264
commit 80fa8181aa
1 changed files with 6 additions and 2 deletions
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8
arch/mips/include/uapi/asm/signal.h
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@ -72,6 +72,12 @@ typedef unsigned long old_sigset_t; /* at least 32 bits */
*
* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
* Unix names RESETHAND and NODEFER respectively.
*
* SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
* supported its use and no libc was using it, so the entire sa-restorer
* functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
* retaining only the SA_RESTORER definition as a reminder to avoid
* accidental reuse of the mask bit.
*/
#define SA_ONSTACK 0x08000000
#define SA_RESETHAND 0x80000000
@ -84,8 +90,6 @@ typedef unsigned long old_sigset_t; /* at least 32 bits */
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_RESTORER 0x04000000 /* Only for o32 */
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192