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-rw-r--r--arch/mn10300/Kconfig1
-rw-r--r--arch/mn10300/Kconfig.debug2
-rw-r--r--arch/mn10300/include/asm/bitops.h4
-rw-r--r--arch/mn10300/include/asm/signal.h2
-rw-r--r--arch/mn10300/kernel/signal.c35
-rw-r--r--arch/mn10300/mm/Makefile14
-rw-r--r--arch/mn10300/mm/cache-disabled.c21
7 files changed, 51 insertions, 28 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index 444b9f918fd..7c2a2f7f8dc 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -8,7 +8,6 @@ mainmenu "Linux Kernel Configuration"
config MN10300
def_bool y
select HAVE_OPROFILE
- select HAVE_ARCH_TRACEHOOK
config AM33
def_bool y
diff --git a/arch/mn10300/Kconfig.debug b/arch/mn10300/Kconfig.debug
index ff80e86b9bd..ce83c74b3fd 100644
--- a/arch/mn10300/Kconfig.debug
+++ b/arch/mn10300/Kconfig.debug
@@ -101,7 +101,7 @@ config GDBSTUB_DEBUG_BREAKPOINT
choice
prompt "GDB stub port"
- default GDBSTUB_TTYSM0
+ default GDBSTUB_ON_TTYSM0
depends on GDBSTUB
help
Select the serial port used for GDB-stub.
diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h
index f49ac49e09a..3f50e966107 100644
--- a/arch/mn10300/include/asm/bitops.h
+++ b/arch/mn10300/include/asm/bitops.h
@@ -229,9 +229,9 @@ int ffs(int x)
#include <asm-generic/bitops/hweight.h>
#define ext2_set_bit_atomic(lock, nr, addr) \
- test_and_set_bit((nr) ^ 0x18, (addr))
+ test_and_set_bit((nr), (addr))
#define ext2_clear_bit_atomic(lock, nr, addr) \
- test_and_clear_bit((nr) ^ 0x18, (addr))
+ test_and_clear_bit((nr), (addr))
#include <asm-generic/bitops/ext2-non-atomic.h>
#include <asm-generic/bitops/minix-le.h>
diff --git a/arch/mn10300/include/asm/signal.h b/arch/mn10300/include/asm/signal.h
index 7e891fce237..1865d72a86f 100644
--- a/arch/mn10300/include/asm/signal.h
+++ b/arch/mn10300/include/asm/signal.h
@@ -78,7 +78,7 @@ typedef unsigned long sigset_t;
/* These should not be considered constants from userland. */
#define SIGRTMIN 32
-#define SIGRTMAX (_NSIG-1)
+#define SIGRTMAX _NSIG
/*
* SA_FLAGS values:
diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c
index 717db14c2cc..d4de05ab786 100644
--- a/arch/mn10300/kernel/signal.c
+++ b/arch/mn10300/kernel/signal.c
@@ -65,10 +65,10 @@ asmlinkage long sys_sigaction(int sig,
old_sigset_t mask;
if (verify_area(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_restorer, &act->sa_restorer) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user(mask, &act->sa_mask))
return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
siginitset(&new_ka.sa.sa_mask, mask);
}
@@ -77,10 +77,10 @@ asmlinkage long sys_sigaction(int sig,
if (!ret && oact) {
if (verify_area(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_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;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
}
return ret;
@@ -102,6 +102,9 @@ static int restore_sigcontext(struct pt_regs *regs,
{
unsigned int err = 0;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
if (is_using_fpu(current))
fpu_kill_state(current);
@@ -330,8 +333,6 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
regs->d0 = sig;
regs->d1 = (unsigned long) &frame->sc;
- set_fs(USER_DS);
-
/* the tracer may want to single-step inside the handler */
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
@@ -345,7 +346,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
return 0;
give_sigsegv:
- force_sig(SIGSEGV, current);
+ force_sigsegv(sig, current);
return -EFAULT;
}
@@ -413,8 +414,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
regs->d0 = sig;
regs->d1 = (long) &frame->info;
- set_fs(USER_DS);
-
/* the tracer may want to single-step inside the handler */
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
@@ -428,10 +427,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
return 0;
give_sigsegv:
- force_sig(SIGSEGV, current);
+ force_sigsegv(sig, current);
return -EFAULT;
}
+static inline void stepback(struct pt_regs *regs)
+{
+ regs->pc -= 2;
+ regs->orig_d0 = -1;
+}
+
/*
* handle the actual delivery of a signal to userspace
*/
@@ -459,7 +464,7 @@ static int handle_signal(int sig,
/* fallthrough */
case -ERESTARTNOINTR:
regs->d0 = regs->orig_d0;
- regs->pc -= 2;
+ stepback(regs);
}
}
@@ -527,12 +532,12 @@ static void do_signal(struct pt_regs *regs)
case -ERESTARTSYS:
case -ERESTARTNOINTR:
regs->d0 = regs->orig_d0;
- regs->pc -= 2;
+ stepback(regs);
break;
case -ERESTART_RESTARTBLOCK:
regs->d0 = __NR_restart_syscall;
- regs->pc -= 2;
+ stepback(regs);
break;
}
}
diff --git a/arch/mn10300/mm/Makefile b/arch/mn10300/mm/Makefile
index 28b9d983db0..1557277fbc5 100644
--- a/arch/mn10300/mm/Makefile
+++ b/arch/mn10300/mm/Makefile
@@ -2,13 +2,11 @@
# Makefile for the MN10300-specific memory management code
#
+cacheflush-y := cache.o cache-mn10300.o
+cacheflush-$(CONFIG_MN10300_CACHE_WBACK) += cache-flush-mn10300.o
+
+cacheflush-$(CONFIG_MN10300_CACHE_DISABLED) := cache-disabled.o
+
obj-y := \
init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \
- misalignment.o dma-alloc.o
-
-ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y)
-obj-y += cache.o cache-mn10300.o
-ifeq ($(CONFIG_MN10300_CACHE_WBACK),y)
-obj-y += cache-flush-mn10300.o
-endif
-endif
+ misalignment.o dma-alloc.o $(cacheflush-y)
diff --git a/arch/mn10300/mm/cache-disabled.c b/arch/mn10300/mm/cache-disabled.c
new file mode 100644
index 00000000000..f669ea42aba
--- /dev/null
+++ b/arch/mn10300/mm/cache-disabled.c
@@ -0,0 +1,21 @@
+/* Handle the cache being disabled
+ *
+ * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/mm.h>
+
+/*
+ * allow userspace to flush the instruction cache
+ */
+asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
+{
+ if (end < start)
+ return -EINVAL;
+ return 0;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-26 15:46:22 +0000