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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 03:43:28 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-03 18:16:15 -0500 |
| commit | b774cc5cb6b3b53b276bb7d968e3579afc2922c5 (patch) | |
| tree | 922a12efa04f84d38e5e215fec3fe7d69874facc | |
| parent | 0aa0203fb43f04714004b2c4ad33b858e240555d (diff) | |
| download | blackbird-obmc-linux-b774cc5cb6b3b53b276bb7d968e3579afc2922c5.tar.gz blackbird-obmc-linux-b774cc5cb6b3b53b276bb7d968e3579afc2922c5.zip | |
score: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/score/Kconfig | 1 | ||||
| -rw-r--r-- | arch/score/include/asm/syscalls.h | 1 | ||||
| -rw-r--r-- | arch/score/kernel/entry.S | 5 | ||||
| -rw-r--r-- | arch/score/kernel/signal.c | 21 |
4 files changed, 3 insertions, 25 deletions
diff --git a/arch/score/Kconfig b/arch/score/Kconfig index 3b1482e7afac..a125d7207bcc 100644 --- a/arch/score/Kconfig +++ b/arch/score/Kconfig @@ -14,6 +14,7 @@ config SCORE select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_REL select CLONE_BACKWARDS + select GENERIC_SIGALTSTACK choice prompt "System type" diff --git a/arch/score/include/asm/syscalls.h b/arch/score/include/asm/syscalls.h index acaeed680956..98d1df92fbd1 100644 --- a/arch/score/include/asm/syscalls.h +++ b/arch/score/include/asm/syscalls.h @@ -1,7 +1,6 @@ #ifndef _ASM_SCORE_SYSCALLS_H #define _ASM_SCORE_SYSCALLS_H -asmlinkage long score_sigaltstack(struct pt_regs *regs); asmlinkage long score_rt_sigreturn(struct pt_regs *regs); #include <asm-generic/syscalls.h> diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S index 1557ca1a2951..7234ed09b7b7 100644 --- a/arch/score/kernel/entry.S +++ b/arch/score/kernel/entry.S @@ -491,8 +491,3 @@ ENTRY(sys_rt_sigreturn) mv r4, r0 la r8, score_rt_sigreturn br r8 - -ENTRY(sys_sigaltstack) - mv r4, r0 - la r8, score_sigaltstack - br r8 diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c index 02353bde92d8..a00fba32b0eb 100644 --- a/arch/score/kernel/signal.c +++ b/arch/score/kernel/signal.c @@ -134,16 +134,6 @@ static void __user *get_sigframe(struct k_sigaction *ka, } asmlinkage long -score_sigaltstack(struct pt_regs *regs) -{ - const stack_t __user *uss = (const stack_t __user *) regs->regs[4]; - stack_t __user *uoss = (stack_t __user *) regs->regs[5]; - unsigned long usp = regs->regs[0]; - - return do_sigaltstack(uss, uoss, usp); -} - -asmlinkage long score_rt_sigreturn(struct pt_regs *regs) { struct rt_sigframe __user *frame; @@ -167,9 +157,7 @@ score_rt_sigreturn(struct pt_regs *regs) else if (sig) force_sig(sig, current); - /* It is more difficult to avoid calling this function than to - call it and ignore errors. */ - if (do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs->regs[0]) == -EFAULT) + if (restore_altstack(&frame->rs_uc.uc_stack)) goto badframe; regs->is_syscall = 0; @@ -209,12 +197,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, err |= copy_siginfo_to_user(&frame->rs_info, info); err |= __put_user(0, &frame->rs_uc.uc_flags); err |= __put_user(NULL, &frame->rs_uc.uc_link); - err |= __put_user((void __user *)current->sas_ss_sp, - &frame->rs_uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->regs[0]), - &frame->rs_uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, - &frame->rs_uc.uc_stack.ss_size); + err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]); err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext); err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set)); |
