diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 03:54:43 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-03 18:16:27 -0500 |
| commit | 0430f2f2764f9db5ee5200c3d24d1eac8a797e28 (patch) | |
| tree | dc6add1a6517a1fa50b71d7d142ebc65ddafde38 /arch/xtensa | |
| parent | 0aa0203fb43f04714004b2c4ad33b858e240555d (diff) | |
xtensa: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/Kconfig | 1 | ||||
| -rw-r--r-- | arch/xtensa/include/asm/syscall.h | 1 | ||||
| -rw-r--r-- | arch/xtensa/include/uapi/asm/unistd.h | 2 | ||||
| -rw-r--r-- | arch/xtensa/kernel/signal.c | 18 |
4 files changed, 4 insertions, 18 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 5aab1acabf1c..23cc6ae35da0 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -16,6 +16,7 @@ config XTENSA select ARCH_WANT_OPTIONAL_GPIOLIB select CLONE_BACKWARDS select IRQ_DOMAIN + select GENERIC_SIGALTSTACK help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h index 08a23ddac295..3673ff1f1bc5 100644 --- a/arch/xtensa/include/asm/syscall.h +++ b/arch/xtensa/include/asm/syscall.h @@ -12,7 +12,6 @@ struct pt_regs; asmlinkage long xtensa_ptrace(long, long, long, long); asmlinkage long xtensa_sigreturn(struct pt_regs*); asmlinkage long xtensa_rt_sigreturn(struct pt_regs*); -asmlinkage long xtensa_sigaltstack(struct pt_regs *regs); asmlinkage long xtensa_shmat(int, char __user *, int); asmlinkage long xtensa_fadvise64_64(int, int, unsigned long long, unsigned long long); diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h index 5162418c5d90..19fac3f543a2 100644 --- a/arch/xtensa/include/uapi/asm/unistd.h +++ b/arch/xtensa/include/uapi/asm/unistd.h @@ -483,7 +483,7 @@ __SYSCALL(222, sys_ni_syscall, 0) #define __NR_restart_syscall 223 __SYSCALL(223, sys_restart_syscall, 0) #define __NR_sigaltstack 224 -__SYSCALL(224, xtensa_sigaltstack, 2) +__SYSCALL(224, sys_sigaltstack, 2) #define __NR_rt_sigreturn 225 __SYSCALL(225, xtensa_rt_sigreturn, 1) #define __NR_rt_sigaction 226 diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index de34d6be91cd..d7590dddd084 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -265,7 +265,7 @@ asmlinkage long xtensa_rt_sigreturn(long a0, long a1, long a2, long a3, ret = regs->areg[2]; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->areg[1]) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return ret; @@ -368,11 +368,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(0, &frame->uc.uc_link); - err |= __put_user((void *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->areg[1]), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= __save_altstack(&frame->uc.uc_stack, regs->areg[1]); err |= setup_sigcontext(frame, regs); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); @@ -424,16 +420,6 @@ give_sigsegv: return -EFAULT; } -asmlinkage long xtensa_sigaltstack(const stack_t __user *uss, - stack_t __user *uoss, - long a2, long a3, long a4, long a5, - struct pt_regs *regs) -{ - return do_sigaltstack(uss, uoss, regs->areg[1]); -} - - - /* * Note that 'init' is a special process: it doesn't get signals it doesn't * want to handle. Thus you cannot kill init even with a SIGKILL even by |