diff options
Diffstat (limited to 'arch/m68k/kernel/signal.c')
| -rw-r--r-- | arch/m68k/kernel/signal.c | 99 |
1 files changed, 19 insertions, 80 deletions
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index d9f3d1900ee..57fd286e4b0 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -50,8 +50,7 @@ #include <asm/pgtable.h> #include <asm/traps.h> #include <asm/ucontext.h> - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) +#include <asm/cacheflush.h> #ifdef CONFIG_MMU @@ -110,8 +109,9 @@ int handle_kernel_fault(struct pt_regs *regs) return 1; } -void ptrace_signal_deliver(struct pt_regs *regs, void *cookie) +void ptrace_signal_deliver(void) { + struct pt_regs *regs = signal_pt_regs(); if (regs->orig_d0 < 0) return; switch (regs->d0) { @@ -182,6 +182,13 @@ static inline void push_cache (unsigned long vaddr) asm volatile ("movec %0,%%caar\n\t" "movec %1,%%cacr" : : "r" (vaddr + 4), "r" (temp)); + } else { + /* CPU_IS_COLDFIRE */ +#if defined(CONFIG_CACHE_COPYBACK) + flush_cf_dcache(0, DCACHE_MAX_ADDR); +#endif + /* Invalidate instruction cache for the pushed bytes */ + clear_cf_icache(vaddr, vaddr + 8); } } @@ -226,56 +233,6 @@ static inline void push_cache(unsigned long vaddr) #endif /* CONFIG_MMU */ /* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) -{ - sigset_t blocked; - siginitset(&blocked, mask); - return sigsuspend(&blocked); -} - -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - return do_sigaltstack(uss, uoss, rdusp()); -} - - -/* * Do a signal return; undo the signal stack. * * Keep the return code on the stack quadword aligned! @@ -766,8 +723,9 @@ rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, err |= __get_user(temp, &uc->uc_formatvec); err |= rt_restore_fpu_state(uc); + err |= restore_altstack(&uc->uc_stack); - if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) + if (err) goto badframe; if (mangle_kernel_stack(regs, temp, &uc->uc_extra)) @@ -795,7 +753,6 @@ asmlinkage int do_sigreturn(unsigned long __unused) sizeof(frame->extramask)))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); set_current_blocked(&set); if (restore_sigcontext(regs, &frame->sc, frame + 1)) @@ -820,7 +777,6 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused) if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); set_current_blocked(&set); if (rt_restore_ucontext(regs, sw, &frame->uc)) @@ -1017,11 +973,7 @@ 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 __user *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(rdusp()), - &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, rdusp()); err |= rt_setup_ucontext(&frame->uc, regs); err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); @@ -1123,8 +1075,9 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) */ static void handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int err; /* are we from a system call? */ if (regs->orig_d0 >= 0) @@ -1140,14 +1093,12 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, if (err) return; - block_sigmask(ka, sig); + signal_delivered(sig, info, ka, regs, 0); if (test_thread_flag(TIF_DELAYED_TRACE)) { regs->sr &= ~0x8000; send_sig(SIGTRAP, current, 1); } - - clear_thread_flag(TIF_RESTORE_SIGMASK); } /* @@ -1160,19 +1111,13 @@ static void do_signal(struct pt_regs *regs) siginfo_t info; struct k_sigaction ka; int signr; - sigset_t *oldset; current->thread.esp0 = (unsigned long) regs; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, oldset, regs); + handle_signal(signr, &ka, &info, regs); return; } @@ -1182,10 +1127,7 @@ static void do_signal(struct pt_regs *regs) handle_restart(regs, NULL, 0); /* If there's no signal to deliver, we just restore the saved mask. */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } + restore_saved_sigmask(); } void do_notify_resume(struct pt_regs *regs) @@ -1193,9 +1135,6 @@ void do_notify_resume(struct pt_regs *regs) if (test_thread_flag(TIF_SIGPENDING)) do_signal(regs); - if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) { + if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) tracehook_notify_resume(regs); - if (current->replacement_session_keyring) - key_replace_session_keyring(); - } } |