1 files changed, 38 insertions, 64 deletions

diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c
index 9dfac5cd16e6..a6c0858592c3 100644
--- a/arch/mn10300/kernel/signal.c
+++ b/arch/mn10300/kernel/signal.c
@@ -186,20 +186,11 @@ static int setup_sigcontext(struct sigcontext __user *sc,
 /*
  * determine which stack to use..
  */
-static inline void __user *get_sigframe(struct k_sigaction *ka,
+static inline void __user *get_sigframe(struct ksignal *ksig,
                                         struct pt_regs *regs,
                                         size_t frame_size)
 {
-        unsigned long sp;
-
-        /* default to using normal stack */
-        sp = regs->sp;
-
-        /* this is the X/Open sanctioned signal stack switching.  */
-        if (ka->sa.sa_flags & SA_ONSTACK) {
-                if (sas_ss_flags(sp) == 0)
-                        sp = current->sas_ss_sp + current->sas_ss_size;
-        }
+        unsigned long sp = sigsp(regs->sp, ksig);
 
         return (void __user *) ((sp - frame_size) & ~7UL);
 }
@@ -207,16 +198,16 @@ static inline void __user *get_sigframe(struct k_sigaction *ka,
 /*
  * set up a normal signal frame
  */
-static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
+static int setup_frame(struct ksignal *ksig, sigset_t *set,
                        struct pt_regs *regs)
 {
         struct sigframe __user *frame;
-        int rsig;
+        int rsig, sig = ksig->sig;
 
-        frame = get_sigframe(ka, regs, sizeof(*frame));
+        frame = get_sigframe(ksig, regs, sizeof(*frame));
 
         if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-                goto give_sigsegv;
+                return -EFAULT;
 
         rsig = sig;
         if (sig < 32 &&
@@ -226,40 +217,40 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 
         if (__put_user(rsig, &frame->sig) < 0 ||
             __put_user(&frame->sc, &frame->psc) < 0)
-                goto give_sigsegv;
+                return -EFAULT;
 
         if (setup_sigcontext(&frame->sc, &frame->fpuctx, regs, set->sig[0]))
-                goto give_sigsegv;
+                return -EFAULT;
 
         if (_NSIG_WORDS > 1) {
                 if (__copy_to_user(frame->extramask, &set->sig[1],
                                    sizeof(frame->extramask)))
-                        goto give_sigsegv;
+                        return -EFAULT;
         }
 
         /* set up to return from userspace.  If provided, use a stub already in
          * userspace */
-        if (ka->sa.sa_flags & SA_RESTORER) {
-                if (__put_user(ka->sa.sa_restorer, &frame->pretcode))
-                        goto give_sigsegv;
+        if (ksig->ka.sa.sa_flags & SA_RESTORER) {
+                if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode))
+                        return -EFAULT;
         } else {
                 if (__put_user((void (*)(void))frame->retcode,
                                &frame->pretcode))
-                        goto give_sigsegv;
+                        return -EFAULT;
                 /* this is mov $,d0; syscall 0 */
                 if (__put_user(0x2c, (char *)(frame->retcode + 0)) ||
                     __put_user(__NR_sigreturn, (char *)(frame->retcode + 1)) ||
                     __put_user(0x00, (char *)(frame->retcode + 2)) ||
                     __put_user(0xf0, (char *)(frame->retcode + 3)) ||
                     __put_user(0xe0, (char *)(frame->retcode + 4)))
-                        goto give_sigsegv;
+                        return -EFAULT;
                 flush_icache_range((unsigned long) frame->retcode,
                                    (unsigned long) frame->retcode + 5);
         }
 
         /* set up registers for signal handler */
         regs->sp = (unsigned long) frame;
-        regs->pc = (unsigned long) ka->sa.sa_handler;
+        regs->pc = (unsigned long) ksig->ka.sa.sa_handler;
         regs->d0 = sig;
         regs->d1 = (unsigned long) &frame->sc;
 
@@ -270,25 +261,21 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 #endif
 
         return 0;
-
-give_sigsegv:
-        force_sigsegv(sig, current);
-        return -EFAULT;
 }
 
 /*
  * set up a realtime signal frame
  */
-static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-                          sigset_t *set, struct pt_regs *regs)
+static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
+                          struct pt_regs *regs)
 {
         struct rt_sigframe __user *frame;
-        int rsig;
+        int rsig, sig = ksig->sig;
 
-        frame = get_sigframe(ka, regs, sizeof(*frame));
+        frame = get_sigframe(ksig, regs, sizeof(*frame));
 
         if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-                goto give_sigsegv;
+                return -EFAULT;
 
         rsig = sig;
         if (sig < 32 &&
@@ -299,8 +286,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
         if (__put_user(rsig, &frame->sig) ||
             __put_user(&frame->info, &frame->pinfo) ||
             __put_user(&frame->uc, &frame->puc) ||
-            copy_siginfo_to_user(&frame->info, info))
-                goto give_sigsegv;
+            copy_siginfo_to_user(&frame->info, &ksig->info))
+                return -EFAULT;
 
         /* create the ucontext.  */
         if (__put_user(0, &frame->uc.uc_flags) ||
@@ -309,13 +296,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
             setup_sigcontext(&frame->uc.uc_mcontext,
                              &frame->fpuctx, regs, set->sig[0]) ||
             __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)))
-                goto give_sigsegv;
+                return -EFAULT;
 
         /* set up to return from userspace.  If provided, use a stub already in
          * userspace */
-        if (ka->sa.sa_flags & SA_RESTORER) {
-                if (__put_user(ka->sa.sa_restorer, &frame->pretcode))
-                        goto give_sigsegv;
+        if (ksig->ka.sa.sa_flags & SA_RESTORER) {
+                if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode))
+                        return -EFAULT;
+
         } else {
                 if (__put_user((void(*)(void))frame->retcode,
                                &frame->pretcode) ||
@@ -326,7 +314,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
                     __put_user(0x00, (char *)(frame->retcode + 2)) ||
                     __put_user(0xf0, (char *)(frame->retcode + 3)) ||
                     __put_user(0xe0, (char *)(frame->retcode + 4)))
-                        goto give_sigsegv;
+                        return -EFAULT;
 
                 flush_icache_range((u_long) frame->retcode,
                                    (u_long) frame->retcode + 5);
@@ -334,7 +322,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 
         /* Set up registers for signal handler */
         regs->sp = (unsigned long) frame;
-        regs->pc = (unsigned long) ka->sa.sa_handler;
+        regs->pc = (unsigned long) ksig->ka.sa.sa_handler;
         regs->d0 = sig;
         regs->d1 = (long) &frame->info;
 
@@ -345,10 +333,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 #endif
 
         return 0;
-
-give_sigsegv:
-        force_sigsegv(sig, current);
-        return -EFAULT;
 }
 
 static inline void stepback(struct pt_regs *regs)
@@ -360,9 +344,7 @@ static inline void stepback(struct pt_regs *regs)
 /*
  * handle the actual delivery of a signal to userspace
  */
-static int handle_signal(int sig,
-                         siginfo_t *info, struct k_sigaction *ka,
-                         struct pt_regs *regs)
+static int handle_signal(struct ksignal *ksig, struct pt_regs *regs)
 {
         sigset_t *oldset = sigmask_to_save();
         int ret;
@@ -377,7 +359,7 @@ static int handle_signal(int sig,
                         break;
 
                 case -ERESTARTSYS:
-                        if (!(ka->sa.sa_flags & SA_RESTART)) {
+                        if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
                                 regs->d0 = -EINTR;
                                 break;
                         }
@@ -390,15 +372,12 @@ static int handle_signal(int sig,
         }
 
         /* Set up the stack frame */
-        if (ka->sa.sa_flags & SA_SIGINFO)
-                ret = setup_rt_frame(sig, ka, info, oldset, regs);
+        if (ksig->ka.sa.sa_flags & SA_SIGINFO)
+                ret = setup_rt_frame(ksig, oldset, regs);
         else
-                ret = setup_frame(sig, ka, oldset, regs);
-        if (ret)
-                return ret;
+                ret = setup_frame(ksig, oldset, regs);
 
-        signal_delivered(sig, info, ka, regs,
-                         test_thread_flag(TIF_SINGLESTEP));
+        signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
         return 0;
 }
 
@@ -407,15 +386,10 @@ static int handle_signal(int sig,
  */
 static void do_signal(struct pt_regs *regs)
 {
-        struct k_sigaction ka;
-        siginfo_t info;
-        int signr;
-
-        signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-        if (signr > 0) {
-                if (handle_signal(signr, &info, &ka, regs) == 0) {
-                }
+        struct ksignal ksig;
 
+        if (get_signal(&ksig)) {
+                handle_signal(&ksig, regs);
                 return;
         }