diff options
Diffstat (limited to 'arch/openrisc')
| -rw-r--r-- | arch/openrisc/Kconfig | 7 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/gpio.h | 69 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/kvm_para.h | 1 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/uaccess.h | 40 | ||||
| -rw-r--r-- | arch/openrisc/kernel/signal.c | 42 | ||||
| -rw-r--r-- | arch/openrisc/lib/string.S | 99 |
7 files changed, 22 insertions, 237 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 297bd38f7c5..49765b53f63 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -18,6 +18,9 @@ config OPENRISC select GENERIC_IOMAP select GENERIC_CPU_DEVICES select GENERIC_ATOMIC64 + select GENERIC_CLOCKEVENTS + select GENERIC_STRNCPY_FROM_USER + select GENERIC_STRNLEN_USER config MMU def_bool y @@ -47,9 +50,6 @@ config NO_IOPORT config GENERIC_GPIO def_bool y -config GENERIC_CLOCKEVENTS - def_bool y - config TRACE_IRQFLAGS_SUPPORT def_bool y @@ -109,7 +109,6 @@ config OPENRISC_HAVE_INST_DIV endmenu -source "kernel/time/Kconfig" source kernel/Kconfig.hz source kernel/Kconfig.preempt source "mm/Kconfig" diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild index c936483bc8e..3f35c38d7b6 100644 --- a/arch/openrisc/include/asm/Kbuild +++ b/arch/openrisc/include/asm/Kbuild @@ -66,3 +66,4 @@ generic-y += topology.h generic-y += types.h generic-y += ucontext.h generic-y += user.h +generic-y += word-at-a-time.h diff --git a/arch/openrisc/include/asm/gpio.h b/arch/openrisc/include/asm/gpio.h index 0b0d174f47c..b3799d88ffc 100644 --- a/arch/openrisc/include/asm/gpio.h +++ b/arch/openrisc/include/asm/gpio.h @@ -1,65 +1,4 @@ -/* - * OpenRISC Linux - * - * Linux architectural port borrowing liberally from similar works of - * others. All original copyrights apply as per the original source - * declaration. - * - * OpenRISC implementation: - * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> - * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> - * et al. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef __ASM_OPENRISC_GPIO_H -#define __ASM_OPENRISC_GPIO_H - -#include <linux/errno.h> -#include <asm-generic/gpio.h> - -#ifdef CONFIG_GPIOLIB - -/* - * OpenRISC (or1k) does not have on-chip GPIO's so there is not really - * any standardized implementation that makes sense here. If passing - * through gpiolib becomes a bottleneck then it may make sense, on a - * case-by-case basis, to implement these inlined/rapid versions. - * - * Just call gpiolib. - */ -static inline int gpio_get_value(unsigned int gpio) -{ - return __gpio_get_value(gpio); -} - -static inline void gpio_set_value(unsigned int gpio, int value) -{ - __gpio_set_value(gpio, value); -} - -static inline int gpio_cansleep(unsigned int gpio) -{ - return __gpio_cansleep(gpio); -} - -/* - * Not implemented, yet. - */ -static inline int gpio_to_irq(unsigned int gpio) -{ - return -ENOSYS; -} - -static inline int irq_to_gpio(unsigned int irq) -{ - return -EINVAL; -} - -#endif /* CONFIG_GPIOLIB */ - -#endif /* __ASM_OPENRISC_GPIO_H */ +#ifndef __LINUX_GPIO_H +#warning Include linux/gpio.h instead of asm/gpio.h +#include <linux/gpio.h> +#endif diff --git a/arch/openrisc/include/asm/kvm_para.h b/arch/openrisc/include/asm/kvm_para.h new file mode 100644 index 00000000000..14fab8f0b95 --- /dev/null +++ b/arch/openrisc/include/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index f5abaa0ffc3..ab2e7a198a4 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -313,42 +313,12 @@ clear_user(void *addr, unsigned long size) return size; } -extern int __strncpy_from_user(char *dst, const char *src, long count); +#define user_addr_max() \ + (segment_eq(get_fs(), USER_DS) ? TASK_SIZE : ~0UL) -static inline long strncpy_from_user(char *dst, const char *src, long count) -{ - if (access_ok(VERIFY_READ, src, 1)) - return __strncpy_from_user(dst, src, count); - return -EFAULT; -} - -/* - * Return the size of a string (including the ending 0) - * - * Return 0 for error - */ - -extern int __strnlen_user(const char *str, long len, unsigned long top); - -/* - * Returns the length of the string at str (including the null byte), - * or 0 if we hit a page we can't access, - * or something > len if we didn't find a null byte. - * - * The `top' parameter to __strnlen_user is to make sure that - * we can never overflow from the user area into kernel space. - */ -static inline long strnlen_user(const char __user *str, long len) -{ - unsigned long top = (unsigned long)get_fs(); - unsigned long res = 0; - - if (__addr_ok(str)) - res = __strnlen_user(str, len, top); - - return res; -} +extern long strncpy_from_user(char *dest, const char __user *src, long count); -#define strlen_user(str) strnlen_user(str, TASK_SIZE-1) +extern __must_check long strlen_user(const char __user *str); +extern __must_check long strnlen_user(const char __user *str, long n); #endif /* __ASM_OPENRISC_UACCESS_H */ diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c index e970743251a..30110297f4f 100644 --- a/arch/openrisc/kernel/signal.c +++ b/arch/openrisc/kernel/signal.c @@ -33,8 +33,6 @@ #define DEBUG_SIG 0 -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - asmlinkage long _sys_sigaltstack(const stack_t *uss, stack_t *uoss, struct pt_regs *regs) { @@ -101,7 +99,6 @@ asmlinkage long _sys_rt_sigreturn(struct pt_regs *regs) if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); set_current_blocked(&set); if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) @@ -251,20 +248,19 @@ give_sigsegv: return -EFAULT; } -static inline int +static inline void handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { int ret; - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); if (ret) - return ret; - - block_sigmask(ka, sig); + return; - return 0; + signal_delivered(sig, info, ka, regs, + test_thread_flag(TIF_SINGLESTEP)); } /* @@ -339,30 +335,10 @@ void do_signal(struct pt_regs *regs) if (signr <= 0) { /* no signal to deliver so we just put the saved sigmask * back */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } - + restore_saved_sigmask(); } else { /* signr > 0 */ - sigset_t *oldset; - - if (current_thread_info()->flags & _TIF_RESTORE_SIGMASK) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - /* Whee! Actually deliver the signal. */ - if (!handle_signal(signr, &info, &ka, oldset, regs)) { - /* a signal was successfully delivered; the saved - * sigmask will have been stored in the signal frame, - * and will be restored by sigreturn, so we can simply - * clear the TIF_RESTORE_SIGMASK flag */ - clear_thread_flag(TIF_RESTORE_SIGMASK); - } - - tracehook_signal_handler(signr, &info, &ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + handle_signal(signr, &info, &ka, regs); } return; @@ -376,7 +352,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs) if (current_thread_info()->flags & _TIF_NOTIFY_RESUME) { clear_thread_flag(TIF_NOTIFY_RESUME); tracehook_notify_resume(regs); - if (current->replacement_session_keyring) - key_replace_session_keyring(); } } diff --git a/arch/openrisc/lib/string.S b/arch/openrisc/lib/string.S index 465f04bc7de..c09fee7dec1 100644 --- a/arch/openrisc/lib/string.S +++ b/arch/openrisc/lib/string.S @@ -103,102 +103,3 @@ __clear_user: .section __ex_table, "a" .long 9b, 99b // write fault .previous - -/* - * long strncpy_from_user(char *dst, const char *src, long count) - * - * - */ - .global __strncpy_from_user -__strncpy_from_user: - l.addi r1,r1,-16 - l.sw 0(r1),r6 - l.sw 4(r1),r5 - l.sw 8(r1),r4 - l.sw 12(r1),r3 - - l.addi r11,r5,0 -2: l.sfeq r5,r0 - l.bf 1f - l.addi r5,r5,-1 -8: l.lbz r6,0(r4) - l.sfeq r6,r0 - l.bf 1f -9: l.sb 0(r3),r6 - l.addi r3,r3,1 - l.j 2b - l.addi r4,r4,1 -1: - l.lwz r6,0(r1) - l.addi r5,r5,1 - l.sub r11,r11,r5 // r11 holds the return value - - l.lwz r6,0(r1) - l.lwz r5,4(r1) - l.lwz r4,8(r1) - l.lwz r3,12(r1) - l.jr r9 - l.addi r1,r1,16 - - .section .fixup, "ax" -99: - l.movhi r11,hi(-EFAULT) - l.ori r11,r11,lo(-EFAULT) - - l.lwz r6,0(r1) - l.lwz r5,4(r1) - l.lwz r4,8(r1) - l.lwz r3,12(r1) - l.jr r9 - l.addi r1,r1,16 - .previous - - .section __ex_table, "a" - .long 8b, 99b // read fault - .previous - -/* - * extern int __strnlen_user(const char *str, long len, unsigned long top); - * - * - * RTRN: - length of a string including NUL termination character - * - on page fault 0 - */ - - .global __strnlen_user -__strnlen_user: - l.addi r1,r1,-8 - l.sw 0(r1),r6 - l.sw 4(r1),r3 - - l.addi r11,r0,0 -2: l.sfeq r11,r4 - l.bf 1f - l.addi r11,r11,1 -8: l.lbz r6,0(r3) - l.sfeq r6,r0 - l.bf 1f - l.sfgeu r3,r5 // are we over the top ? - l.bf 99f - l.j 2b - l.addi r3,r3,1 - -1: - l.lwz r6,0(r1) - l.lwz r3,4(r1) - l.jr r9 - l.addi r1,r1,8 - - .section .fixup, "ax" -99: - l.addi r11,r0,0 - - l.lwz r6,0(r1) - l.lwz r3,4(r1) - l.jr r9 - l.addi r1,r1,8 - .previous - - .section __ex_table, "a" - .long 8b, 99b // read fault - .previous |