diff options
| -rw-r--r-- | arch/sh/Kconfig | 1 | ||||
| -rw-r--r-- | arch/sh/include/asm/syscalls_32.h | 3 | ||||
| -rw-r--r-- | arch/sh/kernel/signal_32.c | 20 | ||||
| -rw-r--r-- | arch/sh/kernel/signal_64.c | 19 |
4 files changed, 5 insertions, 38 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index babc2b826c5..fb4a212c1bc 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -40,6 +40,7 @@ config SUPERH select GENERIC_STRNLEN_USER select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER select MODULES_USE_ELF_RELA + select GENERIC_SIGALTSTACK help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast diff --git a/arch/sh/include/asm/syscalls_32.h b/arch/sh/include/asm/syscalls_32.h index cc25485996b..77e2054d678 100644 --- a/arch/sh/include/asm/syscalls_32.h +++ b/arch/sh/include/asm/syscalls_32.h @@ -12,9 +12,6 @@ struct pt_regs; asmlinkage int sys_sigsuspend(old_sigset_t mask); asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact); -asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7, struct pt_regs __regs); diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 2f1f65356c0..e540d07dd5c 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -89,17 +89,6 @@ sys_sigaction(int sig, const struct old_sigaction __user *act, return ret; } -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, - unsigned long r6, unsigned long r7, - struct pt_regs __regs) -{ - struct pt_regs *regs = RELOC_HIDE(&__regs, 0); - - return do_sigaltstack(uss, uoss, regs->regs[15]); -} - - /* * Do a signal return; undo the signal stack. */ @@ -257,8 +246,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5, if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, - regs->regs[15]) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return r0; @@ -423,11 +411,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(NULL, &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->regs[15]), - &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->regs[15]); err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index d867cd95a62..0fba66e2b20 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -170,15 +170,6 @@ sys_sigaction(int sig, const struct old_sigaction __user *act, return ret; } -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, - unsigned long r4, unsigned long r5, unsigned long r6, - unsigned long r7, - struct pt_regs * regs) -{ - return do_sigaltstack(uss, uoss, REF_REG_SP); -} - /* * Do a signal return; undo the signal stack. */ @@ -364,9 +355,7 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3, goto badframe; regs->pc -= 4; - /* It is more difficult to avoid calling this function than to - call it and ignore errors. */ - if (do_sigaltstack(&frame->uc.uc_stack, NULL, REF_REG_SP) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return (int) ret; @@ -560,11 +549,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Create the ucontext. */ 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->regs[REG_SP]), - &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->regs[REG_SP]); err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); |