diff options
Diffstat (limited to 'arch/cris')
| -rw-r--r-- | arch/cris/arch-v10/drivers/sync_serial.c | 1 | ||||
| -rw-r--r-- | arch/cris/arch-v10/kernel/signal.c | 89 | ||||
| -rw-r--r-- | arch/cris/arch-v32/drivers/sync_serial.c | 1 | ||||
| -rw-r--r-- | arch/cris/arch-v32/kernel/signal.c | 89 | ||||
| -rw-r--r-- | arch/cris/include/asm/Kbuild | 3 | ||||
| -rw-r--r-- | arch/cris/include/asm/atomic.h | 59 | ||||
| -rw-r--r-- | arch/cris/include/asm/scatterlist.h | 6 | ||||
| -rw-r--r-- | arch/cris/include/asm/sections.h | 7 |
8 files changed, 96 insertions, 159 deletions
diff --git a/arch/cris/arch-v10/drivers/sync_serial.c b/arch/cris/arch-v10/drivers/sync_serial.c index 29eb02a..0f39832 100644 --- a/arch/cris/arch-v10/drivers/sync_serial.c +++ b/arch/cris/arch-v10/drivers/sync_serial.c @@ -1086,7 +1086,6 @@ static ssize_t sync_serial_write(struct file *file, const char *buf, } local_irq_restore(flags); schedule(); - set_current_state(TASK_RUNNING); remove_wait_queue(&port->out_wait_q, &wait); if (signal_pending(current)) return -EINTR; diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c index 61ce627..9b32d33 100644 --- a/arch/cris/arch-v10/kernel/signal.c +++ b/arch/cris/arch-v10/kernel/signal.c @@ -203,15 +203,9 @@ static int setup_sigcontext(struct sigcontext __user *sc, * - usually on the stack. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long sp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (! on_sig_stack(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(rdusp(), ksig); /* make sure the frame is dword-aligned */ @@ -228,33 +222,33 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) * user-mode trampoline. */ -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; unsigned long return_ip; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], sizeof(frame->extramask)); } 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) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* trampoline - the desired return ip is the retcode itself */ return_ip = (unsigned long)&frame->retcode; @@ -265,42 +259,38 @@ static int setup_frame(int sig, struct k_sigaction *ka, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ - regs->irp = (unsigned long) ka->sa.sa_handler; /* what we enter NOW */ + regs->irp = (unsigned long) ksig->ka.sa.sa_handler; /* what we enter NOW */ regs->srp = return_ip; /* what we enter LATER */ - regs->r10 = sig; /* first argument is signo */ + regs->r10 = ksig->sig; /* first argument is signo */ /* actually move the usp to reflect the stacked frame */ wrusp((unsigned long)frame); 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; unsigned long return_ip; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; 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); if (err) - goto give_sigsegv; + return -EFAULT; /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -312,12 +302,12 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __save_altstack(&frame->uc.uc_stack, rdusp()); 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) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* trampoline - the desired return ip is the retcode itself */ return_ip = (unsigned long)&frame->retcode; @@ -329,18 +319,18 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* TODO what is the current->exec_domain stuff and invmap ? */ /* Set up registers for signal handler */ /* What we enter NOW */ - regs->irp = (unsigned long) ka->sa.sa_handler; + regs->irp = (unsigned long) ksig->ka.sa.sa_handler; /* What we enter LATER */ regs->srp = return_ip; /* First argument is signo */ - regs->r10 = sig; + regs->r10 = ksig->sig; /* Second argument is (siginfo_t *) */ regs->r11 = (unsigned long)&frame->info; /* Third argument is unused */ @@ -350,19 +340,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* * OK, we're invoking a handler */ -static inline void handle_signal(int canrestart, unsigned long sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs) +static inline void handle_signal(int canrestart, struct ksignal *ksig, + struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -383,7 +368,7 @@ static inline void handle_signal(int canrestart, unsigned long sig, /* ERESTARTSYS means to restart the syscall if * there is no handler or the handler was * registered with SA_RESTART */ - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r10 = -EINTR; break; } @@ -396,13 +381,12 @@ static inline void handle_signal(int canrestart, unsigned long 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); + ret = setup_frame(ksig, oldset, regs); - if (ret == 0) - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -419,9 +403,7 @@ static inline void handle_signal(int canrestart, unsigned long sig, void do_signal(int canrestart, 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 @@ -432,10 +414,9 @@ void do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(canrestart, signr, &info, &ka, regs); + handle_signal(canrestart, &ksig, regs); return; } diff --git a/arch/cris/arch-v32/drivers/sync_serial.c b/arch/cris/arch-v32/drivers/sync_serial.c index bbb806b..5a14913 100644 --- a/arch/cris/arch-v32/drivers/sync_serial.c +++ b/arch/cris/arch-v32/drivers/sync_serial.c @@ -1089,7 +1089,6 @@ static ssize_t sync_serial_write(struct file *file, const char *buf, } schedule(); - set_current_state(TASK_RUNNING); remove_wait_queue(&port->out_wait_q, &wait); if (signal_pending(current)) diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c index 01d1375..78ce3b1 100644 --- a/arch/cris/arch-v32/kernel/signal.c +++ b/arch/cris/arch-v32/kernel/signal.c @@ -189,17 +189,9 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, /* Figure out where to put the new signal frame - usually on the stack. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long sp; - - sp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!on_sig_stack(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(rdusp(), ksig); /* Make sure the frame is dword-aligned. */ sp &= ~3; @@ -215,23 +207,22 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) * trampoline. */ static int -setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, - struct pt_regs * regs) +setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { int err; unsigned long return_ip; struct signal_frame __user *frame; err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], @@ -239,14 +230,14 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, } if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up to return from user-space. If provided, use a stub * already located in user-space. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* Trampoline - the desired return ip is in the signal return page. */ return_ip = cris_signal_return_page; @@ -264,7 +255,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, } if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up registers for signal handler. @@ -273,42 +264,37 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, * Where the code enter later. * First argument, signo. */ - regs->erp = (unsigned long) ka->sa.sa_handler; + regs->erp = (unsigned long) ksig->ka.sa.sa_handler; regs->srp = return_ip; - regs->r10 = sig; + regs->r10 = ksig->sig; /* Actually move the USP to reflect the stacked frame. */ wrusp((unsigned long)frame); 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) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { int err; unsigned long return_ip; struct rt_signal_frame __user *frame; err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; /* TODO: what is the current->exec_domain stuff and invmap ? */ 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); if (err) - goto give_sigsegv; + return -EFAULT; /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -317,14 +303,14 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __save_altstack(&frame->uc.uc_stack, rdusp()); if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up to return from user-space. If provided, use a stub * already located in user-space. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long) ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long) ksig->ka.sa.sa_restorer; } else { /* Trampoline - the desired return ip is in the signal return page. */ return_ip = cris_signal_return_page + 6; @@ -345,7 +331,7 @@ 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. @@ -356,9 +342,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * Second argument is (siginfo_t *). * Third argument is unused. */ - regs->erp = (unsigned long) ka->sa.sa_handler; + regs->erp = (unsigned long) ksig->ka.sa.sa_handler; regs->srp = return_ip; - regs->r10 = sig; + regs->r10 = ksig->sig; regs->r11 = (unsigned long) &frame->info; regs->r12 = 0; @@ -366,17 +352,11 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* Invoke a signal handler to, well, handle the signal. */ static inline void -handle_signal(int canrestart, unsigned long sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs * regs) +handle_signal(int canrestart, struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -404,7 +384,7 @@ handle_signal(int canrestart, unsigned long sig, * there is no handler, or the handler * was registered with SA_RESTART. */ - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r10 = -EINTR; break; } @@ -423,13 +403,12 @@ handle_signal(int canrestart, unsigned long 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); + ret = setup_frame(ksig, oldset, regs); - if (ret == 0) - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -446,9 +425,7 @@ handle_signal(int canrestart, unsigned long sig, void do_signal(int canrestart, struct pt_regs *regs) { - int signr; - siginfo_t info; - struct k_sigaction ka; + struct ksignal ksig; /* * The common case should go fast, which is why this point is @@ -458,11 +435,9 @@ do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(canrestart, signr, &info, &ka, regs); + handle_signal(canrestart, &ksig, regs); return; } diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild index afff510..2ca489e 100644 --- a/arch/cris/include/asm/Kbuild +++ b/arch/cris/include/asm/Kbuild @@ -8,11 +8,14 @@ generic-y += clkdev.h generic-y += cputime.h generic-y += exec.h generic-y += hash.h +generic-y += irq_work.h generic-y += kvm_para.h generic-y += linkage.h generic-y += mcs_spinlock.h generic-y += module.h generic-y += preempt.h +generic-y += scatterlist.h +generic-y += sections.h generic-y += trace_clock.h generic-y += vga.h generic-y += xor.h diff --git a/arch/cris/include/asm/atomic.h b/arch/cris/include/asm/atomic.h index aa429ba..279766a 100644 --- a/arch/cris/include/asm/atomic.h +++ b/arch/cris/include/asm/atomic.h @@ -17,48 +17,41 @@ #define ATOMIC_INIT(i) { (i) } -#define atomic_read(v) (*(volatile int *)&(v)->counter) +#define atomic_read(v) ACCESS_ONCE((v)->counter) #define atomic_set(v,i) (((v)->counter) = (i)) /* These should be written in asm but we do it in C for now. */ -static inline void atomic_add(int i, volatile atomic_t *v) -{ - unsigned long flags; - cris_atomic_save(v, flags); - v->counter += i; - cris_atomic_restore(v, flags); +#define ATOMIC_OP(op, c_op) \ +static inline void atomic_##op(int i, volatile atomic_t *v) \ +{ \ + unsigned long flags; \ + cris_atomic_save(v, flags); \ + v->counter c_op i; \ + cris_atomic_restore(v, flags); \ +} \ + +#define ATOMIC_OP_RETURN(op, c_op) \ +static inline int atomic_##op##_return(int i, volatile atomic_t *v) \ +{ \ + unsigned long flags; \ + int retval; \ + cris_atomic_save(v, flags); \ + retval = (v->counter c_op i); \ + cris_atomic_restore(v, flags); \ + return retval; \ } -static inline void atomic_sub(int i, volatile atomic_t *v) -{ - unsigned long flags; - cris_atomic_save(v, flags); - v->counter -= i; - cris_atomic_restore(v, flags); -} +#define ATOMIC_OPS(op, c_op) ATOMIC_OP(op, c_op) ATOMIC_OP_RETURN(op, c_op) -static inline int atomic_add_return(int i, volatile atomic_t *v) -{ - unsigned long flags; - int retval; - cris_atomic_save(v, flags); - retval = (v->counter += i); - cris_atomic_restore(v, flags); - return retval; -} +ATOMIC_OPS(add, +=) +ATOMIC_OPS(sub, -=) -#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) +#undef ATOMIC_OPS +#undef ATOMIC_OP_RETURN +#undef ATOMIC_OP -static inline int atomic_sub_return(int i, volatile atomic_t *v) -{ - unsigned long flags; - int retval; - cris_atomic_save(v, flags); - retval = (v->counter -= i); - cris_atomic_restore(v, flags); - return retval; -} +#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) static inline int atomic_sub_and_test(int i, volatile atomic_t *v) { diff --git a/arch/cris/include/asm/scatterlist.h b/arch/cris/include/asm/scatterlist.h deleted file mode 100644 index f11f8f4..0000000 --- a/arch/cris/include/asm/scatterlist.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_CRIS_SCATTERLIST_H -#define __ASM_CRIS_SCATTERLIST_H - -#include <asm-generic/scatterlist.h> - -#endif /* !(__ASM_CRIS_SCATTERLIST_H) */ diff --git a/arch/cris/include/asm/sections.h b/arch/cris/include/asm/sections.h deleted file mode 100644 index 2c998ce..0000000 --- a/arch/cris/include/asm/sections.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef _CRIS_SECTIONS_H -#define _CRIS_SECTIONS_H - -/* nothing to see, move along */ -#include <asm-generic/sections.h> - -#endif |