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Commit b46e8487 authored by Richard Weinberger's avatar Richard Weinberger Committed by Richard Weinberger
Browse files

sh: Use get_signal() signal_setup_done() 



Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 2bb12b77

arch/sh/kernel/signal_32.c

+32 −47
Original line number Diff line number Diff line
@@ -262,17 +262,17 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) 
extern void __kernel_sigreturn(void);

extern void __kernel_rt_sigreturn(void);



static int setup_frame(int sig, struct k_sigaction *ka,

			sigset_t *set, struct pt_regs *regs)

static int setup_frame(struct ksignal *ksig, sigset_t *set,

		       struct pt_regs *regs)

{

	struct sigframe __user *frame;

	int err = 0;

	int err = 0, sig = ksig->sig;

	int signal;



	frame = get_sigframe(ka, regs->regs[15], sizeof(*frame));

	frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));



	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))

		goto give_sigsegv;

		return -EFAULT;



	signal = current_thread_info()->exec_domain

		&& current_thread_info()->exec_domain->signal_invmap
@@ -288,8 +288,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, 


	/* Set up to return from userspace.  If provided, use a stub

	   already in userspace.  */

	if (ka->sa.sa_flags & SA_RESTORER) {

		regs->pr = (unsigned long) ka->sa.sa_restorer;

	if (ksig->ka.sa.sa_flags & SA_RESTORER) {

		regs->pr = (unsigned long) ksig->ka.sa.sa_restorer;

#ifdef CONFIG_VSYSCALL

	} else if (likely(current->mm->context.vdso)) {

		regs->pr = VDSO_SYM(&__kernel_sigreturn);
@@ -309,7 +309,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, 
	}



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	/* Set up registers for signal handler */

	regs->regs[15] = (unsigned long) frame;
@@ -319,15 +319,15 @@ static int setup_frame(int sig, struct k_sigaction *ka, 


	if (current->personality & FDPIC_FUNCPTRS) {

		struct fdpic_func_descriptor __user *funcptr =

			(struct fdpic_func_descriptor __user *)ka->sa.sa_handler;

			(struct fdpic_func_descriptor __user *)ksig->ka.sa.sa_handler;



		err |= __get_user(regs->pc, &funcptr->text);

		err |= __get_user(regs->regs[12], &funcptr->GOT);

	} else

		regs->pc = (unsigned long)ka->sa.sa_handler;

		regs->pc = (unsigned long)ksig->ka.sa.sa_handler;



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	set_fs(USER_DS);
@@ -335,23 +335,19 @@ static int setup_frame(int sig, struct k_sigaction *ka, 
		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



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 err = 0;

	int err = 0, sig = ksig->sig;

	int signal;



	frame = get_sigframe(ka, regs->regs[15], sizeof(*frame));

	frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame));



	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))

		goto give_sigsegv;

		return -EFAULT;



	signal = current_thread_info()->exec_domain

		&& current_thread_info()->exec_domain->signal_invmap
@@ -359,7 +355,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		? current_thread_info()->exec_domain->signal_invmap[sig]

		: sig;



	err |= copy_siginfo_to_user(&frame->info, info);

	err |= copy_siginfo_to_user(&frame->info, &ksig->info);



	/* Create the ucontext.  */

	err |= __put_user(0, &frame->uc.uc_flags);
@@ -371,8 +367,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


	/* Set up to return from userspace.  If provided, use a stub

	   already in userspace.  */

	if (ka->sa.sa_flags & SA_RESTORER) {

		regs->pr = (unsigned long) ka->sa.sa_restorer;

	if (ksig->ka.sa.sa_flags & SA_RESTORER) {

		regs->pr = (unsigned long) ksig->ka.sa.sa_restorer;

#ifdef CONFIG_VSYSCALL

	} else if (likely(current->mm->context.vdso)) {

		regs->pr = VDSO_SYM(&__kernel_rt_sigreturn);
@@ -392,7 +388,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	}



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	/* Set up registers for signal handler */

	regs->regs[15] = (unsigned long) frame;
@@ -402,15 +398,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


	if (current->personality & FDPIC_FUNCPTRS) {

		struct fdpic_func_descriptor __user *funcptr =

			(struct fdpic_func_descriptor __user *)ka->sa.sa_handler;

			(struct fdpic_func_descriptor __user *)ksig->ka.sa.sa_handler;



		err |= __get_user(regs->pc, &funcptr->text);

		err |= __get_user(regs->regs[12], &funcptr->GOT);

	} else

		regs->pc = (unsigned long)ka->sa.sa_handler;

		regs->pc = (unsigned long)ksig->ka.sa.sa_handler;



	if (err)

		goto give_sigsegv;

		return -EFAULT;



	set_fs(USER_DS);
@@ -418,10 +414,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



static inline void
@@ -455,22 +447,18 @@ handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs, 
 * OK, we're invoking a handler

 */

static void

handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info,

	      struct pt_regs *regs, unsigned int save_r0)

handle_signal(struct ksignal *ksig, struct pt_regs *regs, unsigned int save_r0)

{

	sigset_t *oldset = sigmask_to_save();

	int ret;



	/* 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);

		ret = setup_frame(ksig, oldset, regs);



	if (ret)

		return;

	signal_delivered(sig, info, ka, regs,

			test_thread_flag(TIF_SINGLESTEP));

	signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));

}



/*
@@ -484,9 +472,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, 
 */

static void do_signal(struct pt_regs *regs, unsigned int save_r0)

{

	siginfo_t info;

	int signr;

	struct k_sigaction ka;

	struct ksignal ksig;



	/*

	 * We want the common case to go fast, which
@@ -497,12 +483,11 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0) 
	if (!user_mode(regs))

		return;



	signr = get_signal_to_deliver(&info, &ka, regs, NULL);

	if (signr > 0) {

		handle_syscall_restart(save_r0, regs, &ka.sa);

	if (get_signal(&ksig)) {

		handle_syscall_restart(save_r0, regs, &ksig.ka.sa);



		/* Whee!  Actually deliver the signal.  */

		handle_signal(signr, &ka, &info, regs, save_r0);

		handle_signal(&ksig, regs, save_r0);

		return;

	}

arch/sh/kernel/signal_64.c

+32 −50
Original line number Diff line number Diff line
@@ -41,8 +41,7 @@ 
#define DEBUG_SIG 0



static void

handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,

		struct pt_regs * regs);

handle_signal(struct ksignal *ksig, struct pt_regs *regs);



static inline void

handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa)
@@ -82,9 +81,7 @@ handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa) 
 */

static void do_signal(struct pt_regs *regs)

{

	siginfo_t info;

	int signr;

	struct k_sigaction ka;

	struct ksignal ksig;



	/*

	 * We want the common case to go fast, which
@@ -95,12 +92,11 @@ static void do_signal(struct pt_regs *regs) 
	if (!user_mode(regs))

		return;



	signr = get_signal_to_deliver(&info, &ka, regs, 0);

	if (signr > 0) {

		handle_syscall_restart(regs, &ka.sa);

	if (get_signal(&ksig)) {

		handle_syscall_restart(regs, &ksig.ka.sa);



		/* Whee!  Actually deliver the signal.  */

		handle_signal(signr, &info, &ka, regs);

		handle_signal(&ksig, regs);

		return;

	}
@@ -378,17 +374,16 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) 
void sa_default_restorer(void);		/* See comments below */

void sa_default_rt_restorer(void);	/* See comments below */



static int setup_frame(int sig, struct k_sigaction *ka,

		       sigset_t *set, struct pt_regs *regs)

static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)

{

	struct sigframe __user *frame;

	int err = 0;

	int err = 0, sig = ksig->sig;

	int signal;



	frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame));

	frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));



	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))

		goto give_sigsegv;

		return -EFAULT;



	signal = current_thread_info()->exec_domain

		&& current_thread_info()->exec_domain->signal_invmap
@@ -400,7 +395,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, 


	/* Give up earlier as i386, in case */

	if (err)

		goto give_sigsegv;

		return -EFAULT;



	if (_NSIG_WORDS > 1) {

		err |= __copy_to_user(frame->extramask, &set->sig[1],
@@ -408,16 +403,16 @@ static int setup_frame(int sig, struct k_sigaction *ka, 


	/* Give up earlier as i386, in case */

	if (err)

		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 (ksig->ka.sa.sa_flags & SA_RESTORER) {

		/*

		 * On SH5 all edited pointers are subject to NEFF

		 */

		DEREF_REG_PR = neff_sign_extend((unsigned long)

			ka->sa.sa_restorer | 0x1);

			ksig->ka->sa.sa_restorer | 0x1);

	} else {

		/*

		 * Different approach on SH5.
@@ -435,7 +430,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, 


		if (__copy_to_user(frame->retcode,

			(void *)((unsigned long)sa_default_restorer & (~1)), 16) != 0)

			goto give_sigsegv;

			return -EFAULT;



		/* Cohere the trampoline with the I-cache. */

		flush_cache_sigtramp(DEREF_REG_PR-1);
@@ -460,7 +455,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, 
	regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->sc;

	regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->sc;



	regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler);

	regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);



	set_fs(USER_DS);
@@ -471,23 +466,19 @@ static int setup_frame(int sig, struct k_sigaction *ka, 
		 DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff);



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



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 *kig, sigset_t *set,

			  struct pt_regs *regs)

{

	struct rt_sigframe __user *frame;

	int err = 0;

	int err = 0, sig = ksig->sig;

	int signal;



	frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame));

	frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame));



	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))

		goto give_sigsegv;

		return -EFAULT;



	signal = current_thread_info()->exec_domain

		&& current_thread_info()->exec_domain->signal_invmap
@@ -497,11 +488,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


	err |= __put_user(&frame->info, &frame->pinfo);

	err |= __put_user(&frame->uc, &frame->puc);

	err |= copy_siginfo_to_user(&frame->info, info);

	err |= copy_siginfo_to_user(&frame->info, &ksig->info);



	/* Give up earlier as i386, in case */

	if (err)

		goto give_sigsegv;

		return -EFAULT;



	/* Create the ucontext.  */

	err |= __put_user(0, &frame->uc.uc_flags);
@@ -513,16 +504,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


	/* Give up earlier as i386, in case */

	if (err)

		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 (ksig->ka.sa.sa_flags & SA_RESTORER) {

		/*

		 * On SH5 all edited pointers are subject to NEFF

		 */

		DEREF_REG_PR = neff_sign_extend((unsigned long)

			ka->sa.sa_restorer | 0x1);

			ksig->ka.sa.sa_restorer | 0x1);

	} else {

		/*

		 * Different approach on SH5.
@@ -540,7 +531,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 


		if (__copy_to_user(frame->retcode,

			(void *)((unsigned long)sa_default_rt_restorer & (~1)), 16) != 0)

			goto give_sigsegv;

			return -EFAULT;



		/* Cohere the trampoline with the I-cache. */

		flush_icache_range(DEREF_REG_PR-1, DEREF_REG_PR-1+15);
@@ -554,7 +545,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
	regs->regs[REG_ARG1] = signal; /* Arg for signal handler */

	regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->info;

	regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext;

	regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler);

	regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);



	set_fs(USER_DS);
@@ -564,33 +555,24 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, 
		 DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff);



	return 0;



give_sigsegv:

	force_sigsegv(sig, current);

	return -EFAULT;

}



/*

 * OK, we're invoking a handler

 */

static void

handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,

		struct pt_regs * regs)

handle_signal(struct ksignal *ksig, struct pt_regs *regs)

{

	sigset_t *oldset = sigmask_to_save();

	int ret;



	/* 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 = 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));

}



asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)