[PATCH 27/35] Disintegrate asm/system.h for SH [ver #2]

From: David Howells
Date: Mon Mar 12 2012 - 19:43:57 EST

Disintegrate asm/system.h for SH.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: linux-sh@xxxxxxxxxxxxxxx
---

arch/sh/boards/mach-microdev/irq.c | 1
arch/sh/include/asm/atomic-irq.h | 2
arch/sh/include/asm/atomic.h | 2
arch/sh/include/asm/auxvec.h | 2
arch/sh/include/asm/barrier.h | 54 +++++++
arch/sh/include/asm/bitops.h | 1
arch/sh/include/asm/bl_bit.h | 10 +
arch/sh/include/asm/bl_bit_32.h | 33 ++++
arch/sh/include/asm/bl_bit_64.h | 40 +++++
arch/sh/include/asm/bug.h | 5 +
arch/sh/include/asm/cache_insns.h | 11 +
arch/sh/include/asm/cache_insns_32.h | 21 +++
arch/sh/include/asm/cache_insns_64.h | 23 +++
arch/sh/include/asm/cmpxchg-irq.h | 2
arch/sh/include/asm/cmpxchg.h | 70 +++++++++
arch/sh/include/asm/exec.h | 10 +
arch/sh/include/asm/futex-irq.h | 1
arch/sh/include/asm/io.h | 1
arch/sh/include/asm/processor.h | 15 ++
arch/sh/include/asm/ptrace.h | 1
arch/sh/include/asm/setup.h | 1
arch/sh/include/asm/switch_to.h | 19 ++
arch/sh/include/asm/switch_to_32.h | 134 ++++++++++++++++++
arch/sh/include/asm/switch_to_64.h | 35 +++++
arch/sh/include/asm/system.h | 191 +------------------------
arch/sh/include/asm/system_32.h | 236 -------------------------------
arch/sh/include/asm/system_64.h | 79 ----------
arch/sh/include/asm/traps.h | 21 +++
arch/sh/include/asm/traps_32.h | 68 +++++++++
arch/sh/include/asm/traps_64.h | 24 +++
arch/sh/include/asm/uaccess.h | 14 ++
arch/sh/kernel/cpu/init.c | 2
arch/sh/kernel/cpu/irq/imask.c | 1
arch/sh/kernel/cpu/sh2a/opcode_helper.c | 1
arch/sh/kernel/cpu/sh4/fpu.c | 1
arch/sh/kernel/hw_breakpoint.c | 1
arch/sh/kernel/idle.c | 2
arch/sh/kernel/io_trapped.c | 1
arch/sh/kernel/process_32.c | 1
arch/sh/kernel/process_64.c | 1
arch/sh/kernel/ptrace_32.c | 1
arch/sh/kernel/ptrace_64.c | 2
arch/sh/kernel/reboot.c | 2
arch/sh/kernel/signal_32.c | 1
arch/sh/kernel/smp.c | 1
arch/sh/kernel/traps.c | 2
arch/sh/kernel/traps_32.c | 3
arch/sh/kernel/traps_64.c | 1
arch/sh/math-emu/math.c | 1
arch/sh/mm/fault_32.c | 2
arch/sh/mm/fault_64.c | 1
arch/sh/mm/flush-sh4.c | 1
arch/sh/mm/pmb.c | 1
arch/sh/mm/tlb-pteaex.c | 1
arch/sh/mm/tlb-sh3.c | 1
arch/sh/mm/tlb-sh4.c | 1
arch/sh/mm/tlbflush_64.c | 1
57 files changed, 634 insertions(+), 527 deletions(-)
create mode 100644 arch/sh/include/asm/barrier.h
create mode 100644 arch/sh/include/asm/bl_bit.h
create mode 100644 arch/sh/include/asm/bl_bit_32.h
create mode 100644 arch/sh/include/asm/bl_bit_64.h
create mode 100644 arch/sh/include/asm/cache_insns.h
create mode 100644 arch/sh/include/asm/cache_insns_32.h
create mode 100644 arch/sh/include/asm/cache_insns_64.h
create mode 100644 arch/sh/include/asm/cmpxchg.h
create mode 100644 arch/sh/include/asm/exec.h
create mode 100644 arch/sh/include/asm/switch_to.h
create mode 100644 arch/sh/include/asm/switch_to_32.h
create mode 100644 arch/sh/include/asm/switch_to_64.h
delete mode 100644 arch/sh/include/asm/system_32.h
delete mode 100644 arch/sh/include/asm/system_64.h
create mode 100644 arch/sh/include/asm/traps.h
create mode 100644 arch/sh/include/asm/traps_32.h
create mode 100644 arch/sh/include/asm/traps_64.h

diff --git a/arch/sh/boards/mach-microdev/irq.c b/arch/sh/boards/mach-microdev/irq.c
index 4fb0036..9a8aff3 100644
--- a/arch/sh/boards/mach-microdev/irq.c
+++ b/arch/sh/boards/mach-microdev/irq.c
@@ -12,7 +12,6 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
-#include <asm/system.h>
#include <asm/io.h>
#include <mach/microdev.h>

diff --git a/arch/sh/include/asm/atomic-irq.h b/arch/sh/include/asm/atomic-irq.h
index 467d941..9f7c566 100644
--- a/arch/sh/include/asm/atomic-irq.h
+++ b/arch/sh/include/asm/atomic-irq.h
@@ -1,6 +1,8 @@
#ifndef __ASM_SH_ATOMIC_IRQ_H
#define __ASM_SH_ATOMIC_IRQ_H

+#include <linux/irqflags.h>
+
/*
* To get proper branch prediction for the main line, we must branch
* forward to code at the end of this object's .text section, then
diff --git a/arch/sh/include/asm/atomic.h b/arch/sh/include/asm/atomic.h
index 63a27db..37f2f4a 100644
--- a/arch/sh/include/asm/atomic.h
+++ b/arch/sh/include/asm/atomic.h
@@ -9,7 +9,7 @@

#include <linux/compiler.h>
#include <linux/types.h>
-#include <asm/system.h>
+#include <asm/cmpxchg.h>

#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )

diff --git a/arch/sh/include/asm/auxvec.h b/arch/sh/include/asm/auxvec.h
index 483effd..8bcc51a 100644
--- a/arch/sh/include/asm/auxvec.h
+++ b/arch/sh/include/asm/auxvec.h
@@ -33,4 +33,6 @@
#define AT_L1D_CACHESHAPE 35
#define AT_L2_CACHESHAPE 36

+#define AT_VECTOR_SIZE_ARCH 5 /* entries in ARCH_DLINFO */
+
#endif /* __ASM_SH_AUXVEC_H */
diff --git a/arch/sh/include/asm/barrier.h b/arch/sh/include/asm/barrier.h
new file mode 100644
index 0000000..72c103d
--- /dev/null
+++ b/arch/sh/include/asm/barrier.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
+ * Copyright (C) 2002 Paul Mundt
+ */
+#ifndef __ASM_SH_BARRIER_H
+#define __ASM_SH_BARRIER_H
+
+#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
+#include <asm/cache_insns.h>
+#endif
+
+/*
+ * A brief note on ctrl_barrier(), the control register write barrier.
+ *
+ * Legacy SH cores typically require a sequence of 8 nops after
+ * modification of a control register in order for the changes to take
+ * effect. On newer cores (like the sh4a and sh5) this is accomplished
+ * with icbi.
+ *
+ * Also note that on sh4a in the icbi case we can forego a synco for the
+ * write barrier, as it's not necessary for control registers.
+ *
+ * Historically we have only done this type of barrier for the MMUCR, but
+ * it's also necessary for the CCR, so we make it generic here instead.
+ */
+#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
+#define mb() __asm__ __volatile__ ("synco": : :"memory")
+#define rmb() mb()
+#define wmb() __asm__ __volatile__ ("synco": : :"memory")
+#define ctrl_barrier() __icbi(PAGE_OFFSET)
+#define read_barrier_depends() do { } while(0)
+#else
+#define mb() __asm__ __volatile__ ("": : :"memory")
+#define rmb() mb()
+#define wmb() __asm__ __volatile__ ("": : :"memory")
+#define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop")
+#define read_barrier_depends() do { } while(0)
+#endif
+
+#ifdef CONFIG_SMP
+#define smp_mb() mb()
+#define smp_rmb() rmb()
+#define smp_wmb() wmb()
+#define smp_read_barrier_depends() read_barrier_depends()
+#else
+#define smp_mb() barrier()
+#define smp_rmb() barrier()
+#define smp_wmb() barrier()
+#define smp_read_barrier_depends() do { } while(0)
+#endif
+
+#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
+
+#endif /* __ASM_SH_BARRIER_H */
diff --git a/arch/sh/include/asm/bitops.h b/arch/sh/include/asm/bitops.h
index 90fa3e4..ea8706d 100644
--- a/arch/sh/include/asm/bitops.h
+++ b/arch/sh/include/asm/bitops.h
@@ -7,7 +7,6 @@
#error only <linux/bitops.h> can be included directly
#endif

-#include <asm/system.h>
/* For __swab32 */
#include <asm/byteorder.h>

diff --git a/arch/sh/include/asm/bl_bit.h b/arch/sh/include/asm/bl_bit.h
new file mode 100644
index 0000000..45e6b9f
--- /dev/null
+++ b/arch/sh/include/asm/bl_bit.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_SH_BL_BIT_H
+#define __ASM_SH_BL_BIT_H
+
+#ifdef CONFIG_SUPERH32
+# include "bl_bit_32.h"
+#else
+# include "bl_bit_64.h"
+#endif
+
+#endif /* __ASM_SH_BL_BIT_H */
diff --git a/arch/sh/include/asm/bl_bit_32.h b/arch/sh/include/asm/bl_bit_32.h
new file mode 100644
index 0000000..fd21eee
--- /dev/null
+++ b/arch/sh/include/asm/bl_bit_32.h
@@ -0,0 +1,33 @@
+#ifndef __ASM_SH_BL_BIT_32_H
+#define __ASM_SH_BL_BIT_32_H
+
+static inline void set_bl_bit(void)
+{
+ unsigned long __dummy0, __dummy1;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "or %2, %0\n\t"
+ "and %3, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "r" (0x10000000), "r" (0xffffff0f)
+ : "memory"
+ );
+}
+
+static inline void clear_bl_bit(void)
+{
+ unsigned long __dummy0, __dummy1;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and %2, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "1" (~0x10000000)
+ : "memory"
+ );
+}
+
+#endif /* __ASM_SH_BL_BIT_32_H */
diff --git a/arch/sh/include/asm/bl_bit_64.h b/arch/sh/include/asm/bl_bit_64.h
new file mode 100644
index 0000000..6cc8711
--- /dev/null
+++ b/arch/sh/include/asm/bl_bit_64.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_SH_BL_BIT_64_H
+#define __ASM_SH_BL_BIT_64_H
+
+#include <asm/processor.h>
+
+#define SR_BL_LL 0x0000000010000000LL
+
+static inline void set_bl_bit(void)
+{
+ unsigned long long __dummy0, __dummy1 = SR_BL_LL;
+
+ __asm__ __volatile__("getcon " __SR ", %0\n\t"
+ "or %0, %1, %0\n\t"
+ "putcon %0, " __SR "\n\t"
+ : "=&r" (__dummy0)
+ : "r" (__dummy1));
+
+}
+
+static inline void clear_bl_bit(void)
+{
+ unsigned long long __dummy0, __dummy1 = ~SR_BL_LL;
+
+ __asm__ __volatile__("getcon " __SR ", %0\n\t"
+ "and %0, %1, %0\n\t"
+ "putcon %0, " __SR "\n\t"
+ : "=&r" (__dummy0)
+ : "r" (__dummy1));
+}
+
+#endif /* __ASM_SH_BL_BIT_64_H */
diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h
index 6323f86..2b87d86 100644
--- a/arch/sh/include/asm/bug.h
+++ b/arch/sh/include/asm/bug.h
@@ -1,6 +1,8 @@
#ifndef __ASM_SH_BUG_H
#define __ASM_SH_BUG_H

+#include <linux/linkage.h>
+
#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
#define BUGFLAG_UNWINDER (1 << 1)

@@ -107,4 +109,7 @@ do { \

#include <asm-generic/bug.h>

+struct pt_regs;
+extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
+
#endif /* __ASM_SH_BUG_H */
diff --git a/arch/sh/include/asm/cache_insns.h b/arch/sh/include/asm/cache_insns.h
new file mode 100644
index 0000000..d25fbe5
--- /dev/null
+++ b/arch/sh/include/asm/cache_insns.h
@@ -0,0 +1,11 @@
+#ifndef __ASM_SH_CACHE_INSNS_H
+#define __ASM_SH_CACHE_INSNS_H
+
+
+#ifdef CONFIG_SUPERH32
+# include "cache_insns_32.h"
+#else
+# include "cache_insns_64.h"
+#endif
+
+#endif /* __ASM_SH_CACHE_INSNS_H */
diff --git a/arch/sh/include/asm/cache_insns_32.h b/arch/sh/include/asm/cache_insns_32.h
new file mode 100644
index 0000000..b92fe54
--- /dev/null
+++ b/arch/sh/include/asm/cache_insns_32.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_SH_CACHE_INSNS_32_H
+#define __ASM_SH_CACHE_INSNS_32_H
+
+#include <linux/types.h>
+
+#if defined(CONFIG_CPU_SH4A)
+#define __icbi(addr) __asm__ __volatile__ ( "icbi @%0\n\t" : : "r" (addr))
+#else
+#define __icbi(addr) mb()
+#endif
+
+#define __ocbp(addr) __asm__ __volatile__ ( "ocbp @%0\n\t" : : "r" (addr))
+#define __ocbi(addr) __asm__ __volatile__ ( "ocbi @%0\n\t" : : "r" (addr))
+#define __ocbwb(addr) __asm__ __volatile__ ( "ocbwb @%0\n\t" : : "r" (addr))
+
+static inline reg_size_t register_align(void *val)
+{
+ return (unsigned long)(signed long)val;
+}
+
+#endif /* __ASM_SH_CACHE_INSNS_32_H */
diff --git a/arch/sh/include/asm/cache_insns_64.h b/arch/sh/include/asm/cache_insns_64.h
new file mode 100644
index 0000000..70b6357
--- /dev/null
+++ b/arch/sh/include/asm/cache_insns_64.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_SH_CACHE_INSNS_64_H
+#define __ASM_SH_CACHE_INSNS_64_H
+
+#define __icbi(addr) __asm__ __volatile__ ( "icbi %0, 0\n\t" : : "r" (addr))
+#define __ocbp(addr) __asm__ __volatile__ ( "ocbp %0, 0\n\t" : : "r" (addr))
+#define __ocbi(addr) __asm__ __volatile__ ( "ocbi %0, 0\n\t" : : "r" (addr))
+#define __ocbwb(addr) __asm__ __volatile__ ( "ocbwb %0, 0\n\t" : : "r" (addr))
+
+static inline reg_size_t register_align(void *val)
+{
+ return (unsigned long long)(signed long long)(signed long)val;
+}
+
+#endif /* __ASM_SH_CACHE_INSNS_64_H */
diff --git a/arch/sh/include/asm/cmpxchg-irq.h b/arch/sh/include/asm/cmpxchg-irq.h
index 43049ec..bd11f63 100644
--- a/arch/sh/include/asm/cmpxchg-irq.h
+++ b/arch/sh/include/asm/cmpxchg-irq.h
@@ -1,6 +1,8 @@
#ifndef __ASM_SH_CMPXCHG_IRQ_H
#define __ASM_SH_CMPXCHG_IRQ_H

+#include <linux/irqflags.h>
+
static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
{
unsigned long flags, retval;
diff --git a/arch/sh/include/asm/cmpxchg.h b/arch/sh/include/asm/cmpxchg.h
new file mode 100644
index 0000000..f6bd140
--- /dev/null
+++ b/arch/sh/include/asm/cmpxchg.h
@@ -0,0 +1,70 @@
+#ifndef __ASM_SH_CMPXCHG_H
+#define __ASM_SH_CMPXCHG_H
+
+/*
+ * Atomic operations that C can't guarantee us. Useful for
+ * resource counting etc..
+ */
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+#if defined(CONFIG_GUSA_RB)
+#include <asm/cmpxchg-grb.h>
+#elif defined(CONFIG_CPU_SH4A)
+#include <asm/cmpxchg-llsc.h>
+#else
+#include <asm/cmpxchg-irq.h>
+#endif
+
+extern void __xchg_called_with_bad_pointer(void);
+
+#define __xchg(ptr, x, size) \
+({ \
+ unsigned long __xchg__res; \
+ volatile void *__xchg_ptr = (ptr); \
+ switch (size) { \
+ case 4: \
+ __xchg__res = xchg_u32(__xchg_ptr, x); \
+ break; \
+ case 1: \
+ __xchg__res = xchg_u8(__xchg_ptr, x); \
+ break; \
+ default: \
+ __xchg_called_with_bad_pointer(); \
+ __xchg__res = x; \
+ break; \
+ } \
+ \
+ __xchg__res; \
+})
+
+#define xchg(ptr,x) \
+ ((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
+
+/* This function doesn't exist, so you'll get a linker error
+ * if something tries to do an invalid cmpxchg(). */
+extern void __cmpxchg_called_with_bad_pointer(void);
+
+#define __HAVE_ARCH_CMPXCHG 1
+
+static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
+ unsigned long new, int size)
+{
+ switch (size) {
+ case 4:
+ return __cmpxchg_u32(ptr, old, new);
+ }
+ __cmpxchg_called_with_bad_pointer();
+ return old;
+}
+
+#define cmpxchg(ptr,o,n) \
+ ({ \
+ __typeof__(*(ptr)) _o_ = (o); \
+ __typeof__(*(ptr)) _n_ = (n); \
+ (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
+ (unsigned long)_n_, sizeof(*(ptr))); \
+ })
+
+#endif /* __ASM_SH_CMPXCHG_H */
diff --git a/arch/sh/include/asm/exec.h b/arch/sh/include/asm/exec.h
new file mode 100644
index 0000000..69486a9
--- /dev/null
+++ b/arch/sh/include/asm/exec.h
@@ -0,0 +1,10 @@
+/*
+ * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
+ * Copyright (C) 2002 Paul Mundt
+ */
+#ifndef __ASM_SH_EXEC_H
+#define __ASM_SH_EXEC_H
+
+#define arch_align_stack(x) (x)
+
+#endif /* __ASM_SH_EXEC_H */
diff --git a/arch/sh/include/asm/futex-irq.h b/arch/sh/include/asm/futex-irq.h
index 6cb9f19..63d3312 100644
--- a/arch/sh/include/asm/futex-irq.h
+++ b/arch/sh/include/asm/futex-irq.h
@@ -1,7 +1,6 @@
#ifndef __ASM_SH_FUTEX_IRQ_H
#define __ASM_SH_FUTEX_IRQ_H

-#include <asm/system.h>

static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
int *oldval)
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 28c5aa5..35fc8b0 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -14,7 +14,6 @@
*/
#include <linux/errno.h>
#include <asm/cache.h>
-#include <asm/system.h>
#include <asm/addrspace.h>
#include <asm/machvec.h>
#include <asm/pgtable.h>
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h
index 9c7bdfc..a229c39 100644
--- a/arch/sh/include/asm/processor.h
+++ b/arch/sh/include/asm/processor.h
@@ -101,6 +101,10 @@ extern struct sh_cpuinfo cpu_data[];
#define cpu_sleep() __asm__ __volatile__ ("sleep" : : : "memory")
#define cpu_relax() barrier()

+void default_idle(void);
+void cpu_idle_wait(void);
+void stop_this_cpu(void *);
+
/* Forward decl */
struct seq_operations;
struct task_struct;
@@ -161,6 +165,17 @@ int vsyscall_init(void);
#define vsyscall_init() do { } while (0)
#endif

+/*
+ * SH-2A has both 16 and 32-bit opcodes, do lame encoding checks.
+ */
+#ifdef CONFIG_CPU_SH2A
+extern unsigned int instruction_size(unsigned int insn);
+#elif defined(CONFIG_SUPERH32)
+#define instruction_size(insn) (2)
+#else
+#define instruction_size(insn) (4)
+#endif
+
#endif /* __ASSEMBLY__ */

#ifdef CONFIG_SUPERH32
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
index 2d3679b..c7b7e1e 100644
--- a/arch/sh/include/asm/ptrace.h
+++ b/arch/sh/include/asm/ptrace.h
@@ -37,7 +37,6 @@
#include <linux/thread_info.h>
#include <asm/addrspace.h>
#include <asm/page.h>
-#include <asm/system.h>

#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
#define kernel_stack_pointer(_regs) ((unsigned long)(_regs)->regs[15])
diff --git a/arch/sh/include/asm/setup.h b/arch/sh/include/asm/setup.h
index 01fa17a..465a22d 100644
--- a/arch/sh/include/asm/setup.h
+++ b/arch/sh/include/asm/setup.h
@@ -20,6 +20,7 @@

void sh_mv_setup(void);
void check_for_initrd(void);
+void per_cpu_trap_init(void);

#endif /* __KERNEL__ */

diff --git a/arch/sh/include/asm/switch_to.h b/arch/sh/include/asm/switch_to.h
new file mode 100644
index 0000000..62b1941
--- /dev/null
+++ b/arch/sh/include/asm/switch_to.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_SH_SWITCH_TO_H
+#define __ASM_SH_SWITCH_TO_H
+
+#ifdef CONFIG_SUPERH32
+# include "switch_to_32.h"
+#else
+# include "switch_to_64.h"
+#endif
+
+#endif /* __ASM_SH_SWITCH_TO_H */
diff --git a/arch/sh/include/asm/switch_to_32.h b/arch/sh/include/asm/switch_to_32.h
new file mode 100644
index 0000000..0c06551
--- /dev/null
+++ b/arch/sh/include/asm/switch_to_32.h
@@ -0,0 +1,134 @@
+#ifndef __ASM_SH_SWITCH_TO_32_H
+#define __ASM_SH_SWITCH_TO_32_H
+
+#ifdef CONFIG_SH_DSP
+
+#define is_dsp_enabled(tsk) \
+ (!!(tsk->thread.dsp_status.status & SR_DSP))
+
+#define __restore_dsp(tsk) \
+do { \
+ register u32 *__ts2 __asm__ ("r2") = \
+ (u32 *)&tsk->thread.dsp_status; \
+ __asm__ __volatile__ ( \
+ ".balign 4\n\t" \
+ "movs.l @r2+, a0\n\t" \
+ "movs.l @r2+, a1\n\t" \
+ "movs.l @r2+, a0g\n\t" \
+ "movs.l @r2+, a1g\n\t" \
+ "movs.l @r2+, m0\n\t" \
+ "movs.l @r2+, m1\n\t" \
+ "movs.l @r2+, x0\n\t" \
+ "movs.l @r2+, x1\n\t" \
+ "movs.l @r2+, y0\n\t" \
+ "movs.l @r2+, y1\n\t" \
+ "lds.l @r2+, dsr\n\t" \
+ "ldc.l @r2+, rs\n\t" \
+ "ldc.l @r2+, re\n\t" \
+ "ldc.l @r2+, mod\n\t" \
+ : : "r" (__ts2)); \
+} while (0)
+
+#define __save_dsp(tsk) \
+do { \
+ register u32 *__ts2 __asm__ ("r2") = \
+ (u32 *)&tsk->thread.dsp_status + 14; \
+ \
+ __asm__ __volatile__ ( \
+ ".balign 4\n\t" \
+ "stc.l mod, @-r2\n\t" \
+ "stc.l re, @-r2\n\t" \
+ "stc.l rs, @-r2\n\t" \
+ "sts.l dsr, @-r2\n\t" \
+ "movs.l y1, @-r2\n\t" \
+ "movs.l y0, @-r2\n\t" \
+ "movs.l x1, @-r2\n\t" \
+ "movs.l x0, @-r2\n\t" \
+ "movs.l m1, @-r2\n\t" \
+ "movs.l m0, @-r2\n\t" \
+ "movs.l a1g, @-r2\n\t" \
+ "movs.l a0g, @-r2\n\t" \
+ "movs.l a1, @-r2\n\t" \
+ "movs.l a0, @-r2\n\t" \
+ : : "r" (__ts2)); \
+} while (0)
+
+#else
+
+#define is_dsp_enabled(tsk) (0)
+#define __save_dsp(tsk) do { } while (0)
+#define __restore_dsp(tsk) do { } while (0)
+#endif
+
+struct task_struct *__switch_to(struct task_struct *prev,
+ struct task_struct *next);
+
+/*
+ * switch_to() should switch tasks to task nr n, first
+ */
+#define switch_to(prev, next, last) \
+do { \
+ register u32 *__ts1 __asm__ ("r1"); \
+ register u32 *__ts2 __asm__ ("r2"); \
+ register u32 *__ts4 __asm__ ("r4"); \
+ register u32 *__ts5 __asm__ ("r5"); \
+ register u32 *__ts6 __asm__ ("r6"); \
+ register u32 __ts7 __asm__ ("r7"); \
+ struct task_struct *__last; \
+ \
+ if (is_dsp_enabled(prev)) \
+ __save_dsp(prev); \
+ \
+ __ts1 = (u32 *)&prev->thread.sp; \
+ __ts2 = (u32 *)&prev->thread.pc; \
+ __ts4 = (u32 *)prev; \
+ __ts5 = (u32 *)next; \
+ __ts6 = (u32 *)&next->thread.sp; \
+ __ts7 = next->thread.pc; \
+ \
+ __asm__ __volatile__ ( \
+ ".balign 4\n\t" \
+ "stc.l gbr, @-r15\n\t" \
+ "sts.l pr, @-r15\n\t" \
+ "mov.l r8, @-r15\n\t" \
+ "mov.l r9, @-r15\n\t" \
+ "mov.l r10, @-r15\n\t" \
+ "mov.l r11, @-r15\n\t" \
+ "mov.l r12, @-r15\n\t" \
+ "mov.l r13, @-r15\n\t" \
+ "mov.l r14, @-r15\n\t" \
+ "mov.l r15, @r1\t! save SP\n\t" \
+ "mov.l @r6, r15\t! change to new stack\n\t" \
+ "mova 1f, %0\n\t" \
+ "mov.l %0, @r2\t! save PC\n\t" \
+ "mov.l 2f, %0\n\t" \
+ "jmp @%0\t! call __switch_to\n\t" \
+ " lds r7, pr\t! with return to new PC\n\t" \
+ ".balign 4\n" \
+ "2:\n\t" \
+ ".long __switch_to\n" \
+ "1:\n\t" \
+ "mov.l @r15+, r14\n\t" \
+ "mov.l @r15+, r13\n\t" \
+ "mov.l @r15+, r12\n\t" \
+ "mov.l @r15+, r11\n\t" \
+ "mov.l @r15+, r10\n\t" \
+ "mov.l @r15+, r9\n\t" \
+ "mov.l @r15+, r8\n\t" \
+ "lds.l @r15+, pr\n\t" \
+ "ldc.l @r15+, gbr\n\t" \
+ : "=z" (__last) \
+ : "r" (__ts1), "r" (__ts2), "r" (__ts4), \
+ "r" (__ts5), "r" (__ts6), "r" (__ts7) \
+ : "r3", "t"); \
+ \
+ last = __last; \
+} while (0)
+
+#define finish_arch_switch(prev) \
+do { \
+ if (is_dsp_enabled(prev)) \
+ __restore_dsp(prev); \
+} while (0)
+
+#endif /* __ASM_SH_SWITCH_TO_32_H */
diff --git a/arch/sh/include/asm/switch_to_64.h b/arch/sh/include/asm/switch_to_64.h
new file mode 100644
index 0000000..ba3129d
--- /dev/null
+++ b/arch/sh/include/asm/switch_to_64.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_SH_SWITCH_TO_64_H
+#define __ASM_SH_SWITCH_TO_64_H
+
+struct thread_struct;
+struct task_struct;
+
+/*
+ * switch_to() should switch tasks to task nr n, first
+ */
+struct task_struct *sh64_switch_to(struct task_struct *prev,
+ struct thread_struct *prev_thread,
+ struct task_struct *next,
+ struct thread_struct *next_thread);
+
+#define switch_to(prev,next,last) \
+do { \
+ if (last_task_used_math != next) { \
+ struct pt_regs *regs = next->thread.uregs; \
+ if (regs) regs->sr |= SR_FD; \
+ } \
+ last = sh64_switch_to(prev, &prev->thread, next, \
+ &next->thread); \
+} while (0)
+
+
+#endif /* __ASM_SH_SWITCH_TO_64_H */
diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h
index 10c8b18..e2042aa 100644
--- a/arch/sh/include/asm/system.h
+++ b/arch/sh/include/asm/system.h
@@ -1,184 +1,9 @@
-#ifndef __ASM_SH_SYSTEM_H
-#define __ASM_SH_SYSTEM_H
-
-/*
- * Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
- * Copyright (C) 2002 Paul Mundt
- */
-
-#include <linux/irqflags.h>
-#include <linux/compiler.h>
-#include <linux/linkage.h>
-#include <asm/types.h>
-#include <asm/uncached.h>
-
-#define AT_VECTOR_SIZE_ARCH 5 /* entries in ARCH_DLINFO */
-
-/*
- * A brief note on ctrl_barrier(), the control register write barrier.
- *
- * Legacy SH cores typically require a sequence of 8 nops after
- * modification of a control register in order for the changes to take
- * effect. On newer cores (like the sh4a and sh5) this is accomplished
- * with icbi.
- *
- * Also note that on sh4a in the icbi case we can forego a synco for the
- * write barrier, as it's not necessary for control registers.
- *
- * Historically we have only done this type of barrier for the MMUCR, but
- * it's also necessary for the CCR, so we make it generic here instead.
- */
-#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
-#define mb() __asm__ __volatile__ ("synco": : :"memory")
-#define rmb() mb()
-#define wmb() __asm__ __volatile__ ("synco": : :"memory")
-#define ctrl_barrier() __icbi(PAGE_OFFSET)
-#define read_barrier_depends() do { } while(0)
-#else
-#define mb() __asm__ __volatile__ ("": : :"memory")
-#define rmb() mb()
-#define wmb() __asm__ __volatile__ ("": : :"memory")
-#define ctrl_barrier() __asm__ __volatile__ ("nop;nop;nop;nop;nop;nop;nop;nop")
-#define read_barrier_depends() do { } while(0)
-#endif
-
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define smp_read_barrier_depends() read_barrier_depends()
-#else
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#define smp_read_barrier_depends() do { } while(0)
-#endif
-
-#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-
-#ifdef CONFIG_GUSA_RB
-#include <asm/cmpxchg-grb.h>
-#elif defined(CONFIG_CPU_SH4A)
-#include <asm/cmpxchg-llsc.h>
-#else
-#include <asm/cmpxchg-irq.h>
-#endif
-
-extern void __xchg_called_with_bad_pointer(void);
-
-#define __xchg(ptr, x, size) \
-({ \
- unsigned long __xchg__res; \
- volatile void *__xchg_ptr = (ptr); \
- switch (size) { \
- case 4: \
- __xchg__res = xchg_u32(__xchg_ptr, x); \
- break; \
- case 1: \
- __xchg__res = xchg_u8(__xchg_ptr, x); \
- break; \
- default: \
- __xchg_called_with_bad_pointer(); \
- __xchg__res = x; \
- break; \
- } \
- \
- __xchg__res; \
-})
-
-#define xchg(ptr,x) \
- ((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
-
-/* This function doesn't exist, so you'll get a linker error
- * if something tries to do an invalid cmpxchg(). */
-extern void __cmpxchg_called_with_bad_pointer(void);
-
-#define __HAVE_ARCH_CMPXCHG 1
-
-static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
- unsigned long new, int size)
-{
- switch (size) {
- case 4:
- return __cmpxchg_u32(ptr, old, new);
- }
- __cmpxchg_called_with_bad_pointer();
- return old;
-}
-
-#define cmpxchg(ptr,o,n) \
- ({ \
- __typeof__(*(ptr)) _o_ = (o); \
- __typeof__(*(ptr)) _n_ = (n); \
- (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
- (unsigned long)_n_, sizeof(*(ptr))); \
- })
-
-struct pt_regs;
-
-extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
+#include <asm/barrier.h>
+#include <asm/bl_bit.h>
+#include <asm/cache_insns.h>
+#include <asm/cmpxchg.h>
+#include <asm/exec.h>
+#include <asm/switch_to.h>
+#include <asm/traps.h>
void free_initmem(void);
-void free_initrd_mem(unsigned long start, unsigned long end);
-
-extern void *set_exception_table_vec(unsigned int vec, void *handler);
-
-static inline void *set_exception_table_evt(unsigned int evt, void *handler)
-{
- return set_exception_table_vec(evt >> 5, handler);
-}
-
-/*
- * SH-2A has both 16 and 32-bit opcodes, do lame encoding checks.
- */
-#ifdef CONFIG_CPU_SH2A
-extern unsigned int instruction_size(unsigned int insn);
-#elif defined(CONFIG_SUPERH32)
-#define instruction_size(insn) (2)
-#else
-#define instruction_size(insn) (4)
-#endif
-
-void per_cpu_trap_init(void);
-void default_idle(void);
-void cpu_idle_wait(void);
-void stop_this_cpu(void *);
-
-#ifdef CONFIG_SUPERH32
-#define BUILD_TRAP_HANDLER(name) \
-asmlinkage void name##_trap_handler(unsigned long r4, unsigned long r5, \
- unsigned long r6, unsigned long r7, \
- struct pt_regs __regs)
-
-#define TRAP_HANDLER_DECL \
- struct pt_regs *regs = RELOC_HIDE(&__regs, 0); \
- unsigned int vec = regs->tra; \
- (void)vec;
-#else
-#define BUILD_TRAP_HANDLER(name) \
-asmlinkage void name##_trap_handler(unsigned int vec, struct pt_regs *regs)
-#define TRAP_HANDLER_DECL
-#endif
-
-BUILD_TRAP_HANDLER(address_error);
-BUILD_TRAP_HANDLER(debug);
-BUILD_TRAP_HANDLER(bug);
-BUILD_TRAP_HANDLER(breakpoint);
-BUILD_TRAP_HANDLER(singlestep);
-BUILD_TRAP_HANDLER(fpu_error);
-BUILD_TRAP_HANDLER(fpu_state_restore);
-BUILD_TRAP_HANDLER(nmi);
-
-#define arch_align_stack(x) (x)
-
-struct mem_access {
- unsigned long (*from)(void *dst, const void __user *src, unsigned long cnt);
- unsigned long (*to)(void __user *dst, const void *src, unsigned long cnt);
-};
-
-#ifdef CONFIG_SUPERH32
-# include "system_32.h"
-#else
-# include "system_64.h"
-#endif
-
-#endif
diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h
deleted file mode 100644
index a4ad1cd..0000000
--- a/arch/sh/include/asm/system_32.h
+++ /dev/null
@@ -1,236 +0,0 @@
-#ifndef __ASM_SH_SYSTEM_32_H
-#define __ASM_SH_SYSTEM_32_H
-
-#include <linux/types.h>
-#include <asm/mmu.h>
-
-#ifdef CONFIG_SH_DSP
-
-#define is_dsp_enabled(tsk) \
- (!!(tsk->thread.dsp_status.status & SR_DSP))
-
-#define __restore_dsp(tsk) \
-do { \
- register u32 *__ts2 __asm__ ("r2") = \
- (u32 *)&tsk->thread.dsp_status; \
- __asm__ __volatile__ ( \
- ".balign 4\n\t" \
- "movs.l @r2+, a0\n\t" \
- "movs.l @r2+, a1\n\t" \
- "movs.l @r2+, a0g\n\t" \
- "movs.l @r2+, a1g\n\t" \
- "movs.l @r2+, m0\n\t" \
- "movs.l @r2+, m1\n\t" \
- "movs.l @r2+, x0\n\t" \
- "movs.l @r2+, x1\n\t" \
- "movs.l @r2+, y0\n\t" \
- "movs.l @r2+, y1\n\t" \
- "lds.l @r2+, dsr\n\t" \
- "ldc.l @r2+, rs\n\t" \
- "ldc.l @r2+, re\n\t" \
- "ldc.l @r2+, mod\n\t" \
- : : "r" (__ts2)); \
-} while (0)
-
-
-#define __save_dsp(tsk) \
-do { \
- register u32 *__ts2 __asm__ ("r2") = \
- (u32 *)&tsk->thread.dsp_status + 14; \
- \
- __asm__ __volatile__ ( \
- ".balign 4\n\t" \
- "stc.l mod, @-r2\n\t" \
- "stc.l re, @-r2\n\t" \
- "stc.l rs, @-r2\n\t" \
- "sts.l dsr, @-r2\n\t" \
- "movs.l y1, @-r2\n\t" \
- "movs.l y0, @-r2\n\t" \
- "movs.l x1, @-r2\n\t" \
- "movs.l x0, @-r2\n\t" \
- "movs.l m1, @-r2\n\t" \
- "movs.l m0, @-r2\n\t" \
- "movs.l a1g, @-r2\n\t" \
- "movs.l a0g, @-r2\n\t" \
- "movs.l a1, @-r2\n\t" \
- "movs.l a0, @-r2\n\t" \
- : : "r" (__ts2)); \
-} while (0)
-
-#else
-
-#define is_dsp_enabled(tsk) (0)
-#define __save_dsp(tsk) do { } while (0)
-#define __restore_dsp(tsk) do { } while (0)
-#endif
-
-#if defined(CONFIG_CPU_SH4A)
-#define __icbi(addr) __asm__ __volatile__ ( "icbi @%0\n\t" : : "r" (addr))
-#else
-#define __icbi(addr) mb()
-#endif
-
-#define __ocbp(addr) __asm__ __volatile__ ( "ocbp @%0\n\t" : : "r" (addr))
-#define __ocbi(addr) __asm__ __volatile__ ( "ocbi @%0\n\t" : : "r" (addr))
-#define __ocbwb(addr) __asm__ __volatile__ ( "ocbwb @%0\n\t" : : "r" (addr))
-
-struct task_struct *__switch_to(struct task_struct *prev,
- struct task_struct *next);
-
-/*
- * switch_to() should switch tasks to task nr n, first
- */
-#define switch_to(prev, next, last) \
-do { \
- register u32 *__ts1 __asm__ ("r1"); \
- register u32 *__ts2 __asm__ ("r2"); \
- register u32 *__ts4 __asm__ ("r4"); \
- register u32 *__ts5 __asm__ ("r5"); \
- register u32 *__ts6 __asm__ ("r6"); \
- register u32 __ts7 __asm__ ("r7"); \
- struct task_struct *__last; \
- \
- if (is_dsp_enabled(prev)) \
- __save_dsp(prev); \
- \
- __ts1 = (u32 *)&prev->thread.sp; \
- __ts2 = (u32 *)&prev->thread.pc; \
- __ts4 = (u32 *)prev; \
- __ts5 = (u32 *)next; \
- __ts6 = (u32 *)&next->thread.sp; \
- __ts7 = next->thread.pc; \
- \
- __asm__ __volatile__ ( \
- ".balign 4\n\t" \
- "stc.l gbr, @-r15\n\t" \
- "sts.l pr, @-r15\n\t" \
- "mov.l r8, @-r15\n\t" \
- "mov.l r9, @-r15\n\t" \
- "mov.l r10, @-r15\n\t" \
- "mov.l r11, @-r15\n\t" \
- "mov.l r12, @-r15\n\t" \
- "mov.l r13, @-r15\n\t" \
- "mov.l r14, @-r15\n\t" \
- "mov.l r15, @r1\t! save SP\n\t" \
- "mov.l @r6, r15\t! change to new stack\n\t" \
- "mova 1f, %0\n\t" \
- "mov.l %0, @r2\t! save PC\n\t" \
- "mov.l 2f, %0\n\t" \
- "jmp @%0\t! call __switch_to\n\t" \
- " lds r7, pr\t! with return to new PC\n\t" \
- ".balign 4\n" \
- "2:\n\t" \
- ".long __switch_to\n" \
- "1:\n\t" \
- "mov.l @r15+, r14\n\t" \
- "mov.l @r15+, r13\n\t" \
- "mov.l @r15+, r12\n\t" \
- "mov.l @r15+, r11\n\t" \
- "mov.l @r15+, r10\n\t" \
- "mov.l @r15+, r9\n\t" \
- "mov.l @r15+, r8\n\t" \
- "lds.l @r15+, pr\n\t" \
- "ldc.l @r15+, gbr\n\t" \
- : "=z" (__last) \
- : "r" (__ts1), "r" (__ts2), "r" (__ts4), \
- "r" (__ts5), "r" (__ts6), "r" (__ts7) \
- : "r3", "t"); \
- \
- last = __last; \
-} while (0)
-
-#define finish_arch_switch(prev) \
-do { \
- if (is_dsp_enabled(prev)) \
- __restore_dsp(prev); \
-} while (0)
-
-#ifdef CONFIG_CPU_HAS_SR_RB
-#define lookup_exception_vector() \
-({ \
- unsigned long _vec; \
- \
- __asm__ __volatile__ ( \
- "stc r2_bank, %0\n\t" \
- : "=r" (_vec) \
- ); \
- \
- _vec; \
-})
-#else
-#define lookup_exception_vector() \
-({ \
- unsigned long _vec; \
- __asm__ __volatile__ ( \
- "mov r4, %0\n\t" \
- : "=r" (_vec) \
- ); \
- \
- _vec; \
-})
-#endif
-
-static inline reg_size_t register_align(void *val)
-{
- return (unsigned long)(signed long)val;
-}
-
-int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
- struct mem_access *ma, int, unsigned long address);
-
-static inline void trigger_address_error(void)
-{
- __asm__ __volatile__ (
- "ldc %0, sr\n\t"
- "mov.l @%1, %0"
- :
- : "r" (0x10000000), "r" (0x80000001)
- );
-}
-
-asmlinkage void do_address_error(struct pt_regs *regs,
- unsigned long writeaccess,
- unsigned long address);
-asmlinkage void do_divide_error(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
-asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
-asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
-asmlinkage void do_exception_error(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
-
-static inline void set_bl_bit(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__ (
- "stc sr, %0\n\t"
- "or %2, %0\n\t"
- "and %3, %0\n\t"
- "ldc %0, sr\n\t"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "r" (0x10000000), "r" (0xffffff0f)
- : "memory"
- );
-}
-
-static inline void clear_bl_bit(void)
-{
- unsigned long __dummy0, __dummy1;
-
- __asm__ __volatile__ (
- "stc sr, %0\n\t"
- "and %2, %0\n\t"
- "ldc %0, sr\n\t"
- : "=&r" (__dummy0), "=r" (__dummy1)
- : "1" (~0x10000000)
- : "memory"
- );
-}
-
-#endif /* __ASM_SH_SYSTEM_32_H */
diff --git a/arch/sh/include/asm/system_64.h b/arch/sh/include/asm/system_64.h
deleted file mode 100644
index 8593bc8d..0000000
--- a/arch/sh/include/asm/system_64.h
+++ /dev/null
@@ -1,79 +0,0 @@
-#ifndef __ASM_SH_SYSTEM_64_H
-#define __ASM_SH_SYSTEM_64_H
-
-/*
- * include/asm-sh/system_64.h
- *
- * Copyright (C) 2000, 2001 Paolo Alberelli
- * Copyright (C) 2003 Paul Mundt
- * Copyright (C) 2004 Richard Curnow
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <cpu/registers.h>
-#include <asm/processor.h>
-
-/*
- * switch_to() should switch tasks to task nr n, first
- */
-struct thread_struct;
-struct task_struct *sh64_switch_to(struct task_struct *prev,
- struct thread_struct *prev_thread,
- struct task_struct *next,
- struct thread_struct *next_thread);
-
-#define switch_to(prev,next,last) \
-do { \
- if (last_task_used_math != next) { \
- struct pt_regs *regs = next->thread.uregs; \
- if (regs) regs->sr |= SR_FD; \
- } \
- last = sh64_switch_to(prev, &prev->thread, next, \
- &next->thread); \
-} while (0)
-
-#define __icbi(addr) __asm__ __volatile__ ( "icbi %0, 0\n\t" : : "r" (addr))
-#define __ocbp(addr) __asm__ __volatile__ ( "ocbp %0, 0\n\t" : : "r" (addr))
-#define __ocbi(addr) __asm__ __volatile__ ( "ocbi %0, 0\n\t" : : "r" (addr))
-#define __ocbwb(addr) __asm__ __volatile__ ( "ocbwb %0, 0\n\t" : : "r" (addr))
-
-static inline reg_size_t register_align(void *val)
-{
- return (unsigned long long)(signed long long)(signed long)val;
-}
-
-extern void phys_stext(void);
-
-static inline void trigger_address_error(void)
-{
- phys_stext();
-}
-
-#define SR_BL_LL 0x0000000010000000LL
-
-static inline void set_bl_bit(void)
-{
- unsigned long long __dummy0, __dummy1 = SR_BL_LL;
-
- __asm__ __volatile__("getcon " __SR ", %0\n\t"
- "or %0, %1, %0\n\t"
- "putcon %0, " __SR "\n\t"
- : "=&r" (__dummy0)
- : "r" (__dummy1));
-
-}
-
-static inline void clear_bl_bit(void)
-{
- unsigned long long __dummy0, __dummy1 = ~SR_BL_LL;
-
- __asm__ __volatile__("getcon " __SR ", %0\n\t"
- "and %0, %1, %0\n\t"
- "putcon %0, " __SR "\n\t"
- : "=&r" (__dummy0)
- : "r" (__dummy1));
-}
-
-#endif /* __ASM_SH_SYSTEM_64_H */
diff --git a/arch/sh/include/asm/traps.h b/arch/sh/include/asm/traps.h
new file mode 100644
index 0000000..afd9df8
--- /dev/null
+++ b/arch/sh/include/asm/traps.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_SH_TRAPS_H
+#define __ASM_SH_TRAPS_H
+
+#include <linux/compiler.h>
+
+#ifdef CONFIG_SUPERH32
+# include "traps_32.h"
+#else
+# include "traps_64.h"
+#endif
+
+BUILD_TRAP_HANDLER(address_error);
+BUILD_TRAP_HANDLER(debug);
+BUILD_TRAP_HANDLER(bug);
+BUILD_TRAP_HANDLER(breakpoint);
+BUILD_TRAP_HANDLER(singlestep);
+BUILD_TRAP_HANDLER(fpu_error);
+BUILD_TRAP_HANDLER(fpu_state_restore);
+BUILD_TRAP_HANDLER(nmi);
+
+#endif /* __ASM_SH_TRAPS_H */
diff --git a/arch/sh/include/asm/traps_32.h b/arch/sh/include/asm/traps_32.h
new file mode 100644
index 0000000..cfd55ff
--- /dev/null
+++ b/arch/sh/include/asm/traps_32.h
@@ -0,0 +1,68 @@
+#ifndef __ASM_SH_TRAPS_32_H
+#define __ASM_SH_TRAPS_32_H
+
+#include <linux/types.h>
+#include <asm/mmu.h>
+
+#ifdef CONFIG_CPU_HAS_SR_RB
+#define lookup_exception_vector() \
+({ \
+ unsigned long _vec; \
+ \
+ __asm__ __volatile__ ( \
+ "stc r2_bank, %0\n\t" \
+ : "=r" (_vec) \
+ ); \
+ \
+ _vec; \
+})
+#else
+#define lookup_exception_vector() \
+({ \
+ unsigned long _vec; \
+ __asm__ __volatile__ ( \
+ "mov r4, %0\n\t" \
+ : "=r" (_vec) \
+ ); \
+ \
+ _vec; \
+})
+#endif
+
+static inline void trigger_address_error(void)
+{
+ __asm__ __volatile__ (
+ "ldc %0, sr\n\t"
+ "mov.l @%1, %0"
+ :
+ : "r" (0x10000000), "r" (0x80000001)
+ );
+}
+
+asmlinkage void do_address_error(struct pt_regs *regs,
+ unsigned long writeaccess,
+ unsigned long address);
+asmlinkage void do_divide_error(unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7,
+ struct pt_regs __regs);
+asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7,
+ struct pt_regs __regs);
+asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7,
+ struct pt_regs __regs);
+asmlinkage void do_exception_error(unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7,
+ struct pt_regs __regs);
+
+#define BUILD_TRAP_HANDLER(name) \
+asmlinkage void name##_trap_handler(unsigned long r4, unsigned long r5, \
+ unsigned long r6, unsigned long r7, \
+ struct pt_regs __regs)
+
+#define TRAP_HANDLER_DECL \
+ struct pt_regs *regs = RELOC_HIDE(&__regs, 0); \
+ unsigned int vec = regs->tra; \
+ (void)vec;
+
+#endif /* __ASM_SH_TRAPS_32_H */
diff --git a/arch/sh/include/asm/traps_64.h b/arch/sh/include/asm/traps_64.h
new file mode 100644
index 0000000..c52d7f9
--- /dev/null
+++ b/arch/sh/include/asm/traps_64.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_SH_TRAPS_64_H
+#define __ASM_SH_TRAPS_64_H
+
+extern void phys_stext(void);
+
+static inline void trigger_address_error(void)
+{
+ phys_stext();
+}
+
+#define BUILD_TRAP_HANDLER(name) \
+asmlinkage void name##_trap_handler(unsigned int vec, struct pt_regs *regs)
+#define TRAP_HANDLER_DECL
+
+#endif /* __ASM_SH_TRAPS_64_H */
diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h
index 075848f..050f221 100644
--- a/arch/sh/include/asm/uaccess.h
+++ b/arch/sh/include/asm/uaccess.h
@@ -254,5 +254,19 @@ int fixup_exception(struct pt_regs *regs);
unsigned long search_exception_table(unsigned long addr);
const struct exception_table_entry *search_exception_tables(unsigned long addr);

+extern void *set_exception_table_vec(unsigned int vec, void *handler);
+
+static inline void *set_exception_table_evt(unsigned int evt, void *handler)
+{
+ return set_exception_table_vec(evt >> 5, handler);
+}
+
+struct mem_access {
+ unsigned long (*from)(void *dst, const void __user *src, unsigned long cnt);
+ unsigned long (*to)(void __user *dst, const void *src, unsigned long cnt);
+};
+
+int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs,
+ struct mem_access *ma, int, unsigned long address);

#endif /* __ASM_SH_UACCESS_H */
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index fac742e..61a07da 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -18,13 +18,13 @@
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/page.h>
-#include <asm/system.h>
#include <asm/cacheflush.h>
#include <asm/cache.h>
#include <asm/elf.h>
#include <asm/io.h>
#include <asm/smp.h>
#include <asm/sh_bios.h>
+#include <asm/setup.h>

#ifdef CONFIG_SH_FPU
#define cpu_has_fpu 1
diff --git a/arch/sh/kernel/cpu/irq/imask.c b/arch/sh/kernel/cpu/irq/imask.c
index 39b6a24..e7f1745 100644
--- a/arch/sh/kernel/cpu/irq/imask.c
+++ b/arch/sh/kernel/cpu/irq/imask.c
@@ -19,7 +19,6 @@
#include <linux/cache.h>
#include <linux/irq.h>
#include <linux/bitmap.h>
-#include <asm/system.h>
#include <asm/irq.h>

/* Bitmap of IRQ masked */
diff --git a/arch/sh/kernel/cpu/sh2a/opcode_helper.c b/arch/sh/kernel/cpu/sh2a/opcode_helper.c
index 9704b79..72aa61c 100644
--- a/arch/sh/kernel/cpu/sh2a/opcode_helper.c
+++ b/arch/sh/kernel/cpu/sh2a/opcode_helper.c
@@ -10,7 +10,6 @@
* for more details.
*/
#include <linux/kernel.h>
-#include <asm/system.h>

/*
* Instructions on SH are generally fixed at 16-bits, however, SH-2A
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index 447482d..e74cd6c 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -15,7 +15,6 @@
#include <linux/io.h>
#include <cpu/fpu.h>
#include <asm/processor.h>
-#include <asm/system.h>
#include <asm/fpu.h>

/* The PR (precision) bit in the FP Status Register must be clear when
diff --git a/arch/sh/kernel/hw_breakpoint.c b/arch/sh/kernel/hw_breakpoint.c
index efae6ab..f917376 100644
--- a/arch/sh/kernel/hw_breakpoint.c
+++ b/arch/sh/kernel/hw_breakpoint.c
@@ -22,6 +22,7 @@
#include <asm/hw_breakpoint.h>
#include <asm/mmu_context.h>
#include <asm/ptrace.h>
+#include <asm/traps.h>

/*
* Stores the breakpoints currently in use on each breakpoint address
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c
index 406508d..b7c8f68 100644
--- a/arch/sh/kernel/idle.c
+++ b/arch/sh/kernel/idle.c
@@ -18,9 +18,9 @@
#include <linux/smp.h>
#include <linux/cpuidle.h>
#include <asm/pgalloc.h>
-#include <asm/system.h>
#include <linux/atomic.h>
#include <asm/smp.h>
+#include <asm/bl_bit.h>

void (*pm_idle)(void);

diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 0f62f46..c0a9761 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -15,7 +15,6 @@
#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/uaccess.h>
#include <asm/io.h>
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 7ec6651..f72e3a9 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -24,7 +24,6 @@
#include <linux/prefetch.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
-#include <asm/system.h>
#include <asm/fpu.h>
#include <asm/syscalls.h>

diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index cbd4e4b..4264583 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -30,6 +30,7 @@
#include <asm/pgtable.h>
#include <asm/mmu_context.h>
#include <asm/fpu.h>
+#include <asm/switch_to.h>

struct task_struct *last_task_used_math = NULL;

diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index a3e6515..9698671 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -28,7 +28,6 @@
#include <linux/hw_breakpoint.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
-#include <asm/system.h>
#include <asm/processor.h>
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index 3d0080b..bc81e07 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -34,11 +34,11 @@
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
-#include <asm/system.h>
#include <asm/processor.h>
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
#include <asm/fpu.h>
+#include <asm/traps.h>

#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
diff --git a/arch/sh/kernel/reboot.c b/arch/sh/kernel/reboot.c
index ca6a5ca..04afe5b 100644
--- a/arch/sh/kernel/reboot.c
+++ b/arch/sh/kernel/reboot.c
@@ -8,8 +8,8 @@
#endif
#include <asm/addrspace.h>
#include <asm/reboot.h>
-#include <asm/system.h>
#include <asm/tlbflush.h>
+#include <asm/traps.h>

void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index a7a55ed..0bc5886 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -25,7 +25,6 @@
#include <linux/freezer.h>
#include <linux/io.h>
#include <linux/tracehook.h>
-#include <asm/system.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index f624174..a17a14d 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -23,7 +23,6 @@
#include <linux/sched.h>
#include <linux/atomic.h>
#include <asm/processor.h>
-#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/smp.h>
#include <asm/cacheflush.h>
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c
index 0830c2a..a87e58a 100644
--- a/arch/sh/kernel/traps.c
+++ b/arch/sh/kernel/traps.c
@@ -7,7 +7,7 @@
#include <linux/uaccess.h>
#include <linux/hardirq.h>
#include <asm/unwinder.h>
-#include <asm/system.h>
+#include <asm/traps.h>

#ifdef CONFIG_GENERIC_BUG
static void handle_BUG(struct pt_regs *regs)
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index 7bbef95..a37175d 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -27,10 +27,11 @@
#include <linux/sysfs.h>
#include <linux/uaccess.h>
#include <linux/perf_event.h>
-#include <asm/system.h>
#include <asm/alignment.h>
#include <asm/fpu.h>
#include <asm/kprobes.h>
+#include <asm/traps.h>
+#include <asm/bl_bit.h>

#ifdef CONFIG_CPU_SH2
# define TRAP_RESERVED_INST 4
diff --git a/arch/sh/kernel/traps_64.c b/arch/sh/kernel/traps_64.c
index cd3a404..6c04860 100644
--- a/arch/sh/kernel/traps_64.c
+++ b/arch/sh/kernel/traps_64.c
@@ -25,7 +25,6 @@
#include <linux/sysctl.h>
#include <linux/module.h>
#include <linux/perf_event.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/atomic.h>
diff --git a/arch/sh/math-emu/math.c b/arch/sh/math-emu/math.c
index 9771952..b876780 100644
--- a/arch/sh/math-emu/math.c
+++ b/arch/sh/math-emu/math.c
@@ -14,7 +14,6 @@
#include <linux/signal.h>
#include <linux/perf_event.h>

-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/io.h>
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index 7bebd04..324eef9 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -17,9 +17,9 @@
#include <linux/kprobes.h>
#include <linux/perf_event.h>
#include <asm/io_trapped.h>
-#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
+#include <asm/traps.h>

static inline int notify_page_fault(struct pt_regs *regs, int trap)
{
diff --git a/arch/sh/mm/fault_64.c b/arch/sh/mm/fault_64.c
index 2b356ce..44a3410 100644
--- a/arch/sh/mm/fault_64.c
+++ b/arch/sh/mm/fault_64.c
@@ -33,7 +33,6 @@
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/interrupt.h>
-#include <asm/system.h>
#include <asm/tlb.h>
#include <asm/io.h>
#include <asm/uaccess.h>
diff --git a/arch/sh/mm/flush-sh4.c b/arch/sh/mm/flush-sh4.c
index cef4026..75a17f5 100644
--- a/arch/sh/mm/flush-sh4.c
+++ b/arch/sh/mm/flush-sh4.c
@@ -1,6 +1,7 @@
#include <linux/mm.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
+#include <asm/traps.h>

/*
* Write back the dirty D-caches, but not invalidate them.
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index fad52f1..7160c9f 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -25,7 +25,6 @@
#include <linux/vmalloc.h>
#include <asm/cacheflush.h>
#include <asm/sizes.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/page.h>
diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index b71db6a..4db21ad 100644
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -12,7 +12,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/io.h>
-#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>

diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 7a940db..6554fb4 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -20,7 +20,6 @@
#include <linux/smp.h>
#include <linux/interrupt.h>

-#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
diff --git a/arch/sh/mm/tlb-sh4.c b/arch/sh/mm/tlb-sh4.c
index cfdf793..d42dd7e 100644
--- a/arch/sh/mm/tlb-sh4.c
+++ b/arch/sh/mm/tlb-sh4.c
@@ -11,7 +11,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/io.h>
-#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>

diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index e3430e0..11c5a18 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -22,7 +22,6 @@
#include <linux/smp.h>
#include <linux/perf_event.h>
#include <linux/interrupt.h>
-#include <asm/system.h>
#include <asm/io.h>
#include <asm/tlb.h>
#include <asm/uaccess.h>

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