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- From: Ramin Moussavi <ramin.moussavi@yacoub.de>
- Subject: [PATCH] microblaze: wire up sigaltstack
- sigaltstack is wired to sys_ni_syscall - microblaze is the only
- architecture without it - although the microblaze signal delivery code
- fully supports the alternate signal stack: get_sigframe() picks the
- stack via sigsp(), setup_rt_frame() saves it with __save_altstack() and
- sys_rt_sigreturn() calls restore_altstack().
- Wire it up to sys_sigaltstack.
- Tested on qemu petalogix-s3adsp1800 (microblazeel, kernel 6.5.10 and
- syscall table unchanged in current mainline) with the uClibc-ng test
- suite: the five sigaltstack-dependent NPTL tests (tst-cancel20/21,
- tst-cancelx20/21, tst-signal6) pass; before this change sigaltstack()
- returned ENOSYS.
- Signed-off-by: Ramin Moussavi <ramin.moussavi@yacoub.de>
- --- a/arch/microblaze/kernel/syscalls/syscall.tbl
- +++ b/arch/microblaze/kernel/syscalls/syscall.tbl
- @@ -193,7 +193,7 @@
- 183 common getcwd sys_getcwd
- 184 common capget sys_capget
- 185 common capset sys_capset
- -186 common sigaltstack sys_ni_syscall
- +186 common sigaltstack sys_sigaltstack
- 187 common sendfile sys_sendfile
- 188 common getpmsg sys_ni_syscall
- 189 common putpmsg sys_ni_syscall
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