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-rw-r--r--include/asm-sh/system.h173
1 files changed, 41 insertions, 132 deletions
diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
index 4faa2fb88616..772cd1a0a674 100644
--- a/include/asm-sh/system.h
+++ b/include/asm-sh/system.h
@@ -12,60 +12,9 @@
#include <asm/types.h>
#include <asm/ptrace.h>
-struct task_struct *__switch_to(struct task_struct *prev,
- struct task_struct *next);
+#define AT_VECTOR_SIZE_ARCH 5 /* entries in ARCH_DLINFO */
-#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */
-/*
- * switch_to() should switch tasks to task nr n, first
- */
-
-#define switch_to(prev, next, last) do { \
- struct task_struct *__last; \
- register unsigned long *__ts1 __asm__ ("r1") = &prev->thread.sp; \
- register unsigned long *__ts2 __asm__ ("r2") = &prev->thread.pc; \
- register unsigned long *__ts4 __asm__ ("r4") = (unsigned long *)prev; \
- register unsigned long *__ts5 __asm__ ("r5") = (unsigned long *)next; \
- register unsigned long *__ts6 __asm__ ("r6") = &next->thread.sp; \
- register unsigned long __ts7 __asm__ ("r7") = 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 ! save SP\n\t" \
- "mov.l @r6, r15 ! change to new stack\n\t" \
- "mova 1f, %0\n\t" \
- "mov.l %0, @r2 ! save PC\n\t" \
- "mov.l 2f, %0\n\t" \
- "jmp @%0 ! call __switch_to\n\t" \
- " lds r7, pr ! 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)
-
-#ifdef CONFIG_CPU_SH4A
+#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
#define __icbi() \
{ \
unsigned long __addr; \
@@ -91,7 +40,7 @@ struct task_struct *__switch_to(struct task_struct *prev,
* 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.
*/
-#ifdef CONFIG_CPU_SH4A
+#if defined(CONFIG_CPU_SH4A) || defined(CONFIG_CPU_SH5)
#define mb() __asm__ __volatile__ ("synco": : :"memory")
#define rmb() mb()
#define wmb() __asm__ __volatile__ ("synco": : :"memory")
@@ -119,63 +68,11 @@ struct task_struct *__switch_to(struct task_struct *prev,
#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-/*
- * Jump to P2 area.
- * When handling TLB or caches, we need to do it from P2 area.
- */
-#define jump_to_P2() \
-do { \
- unsigned long __dummy; \
- __asm__ __volatile__( \
- "mov.l 1f, %0\n\t" \
- "or %1, %0\n\t" \
- "jmp @%0\n\t" \
- " nop\n\t" \
- ".balign 4\n" \
- "1: .long 2f\n" \
- "2:" \
- : "=&r" (__dummy) \
- : "r" (0x20000000)); \
-} while (0)
-
-/*
- * Back to P1 area.
- */
-#define back_to_P1() \
-do { \
- unsigned long __dummy; \
- ctrl_barrier(); \
- __asm__ __volatile__( \
- "mov.l 1f, %0\n\t" \
- "jmp @%0\n\t" \
- " nop\n\t" \
- ".balign 4\n" \
- "1: .long 2f\n" \
- "2:" \
- : "=&r" (__dummy)); \
-} while (0)
-
-static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
-{
- unsigned long flags, retval;
-
- local_irq_save(flags);
- retval = *m;
- *m = val;
- local_irq_restore(flags);
- return retval;
-}
-
-static inline unsigned long xchg_u8(volatile u8 *m, unsigned long val)
-{
- unsigned long flags, retval;
-
- local_irq_save(flags);
- retval = *m;
- *m = val & 0xff;
- local_irq_restore(flags);
- return retval;
-}
+#ifdef CONFIG_GUSA_RB
+#include <asm/cmpxchg-grb.h>
+#else
+#include <asm/cmpxchg-irq.h>
+#endif
extern void __xchg_called_with_bad_pointer(void);
@@ -202,20 +99,6 @@ extern void __xchg_called_with_bad_pointer(void);
#define xchg(ptr,x) \
((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
-static inline unsigned long __cmpxchg_u32(volatile int * m, unsigned long old,
- unsigned long new)
-{
- __u32 retval;
- unsigned long flags;
-
- local_irq_save(flags);
- retval = *m;
- if (retval == old)
- *m = new;
- local_irq_restore(flags); /* implies memory barrier */
- return retval;
-}
-
/* 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);
@@ -255,10 +138,14 @@ static inline void *set_exception_table_evt(unsigned int evt, void *handler)
*/
#ifdef CONFIG_CPU_SH2A
extern unsigned int instruction_size(unsigned int insn);
-#else
+#elif defined(CONFIG_SUPERH32)
#define instruction_size(insn) (2)
+#else
+#define instruction_size(insn) (4)
#endif
+extern unsigned long cached_to_uncached;
+
/* XXX
* disable hlt during certain critical i/o operations
*/
@@ -270,13 +157,35 @@ void default_idle(void);
void per_cpu_trap_init(void);
asmlinkage void break_point_trap(void);
-asmlinkage void debug_trap_handler(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
-asmlinkage void bug_trap_handler(unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7,
- struct pt_regs __regs);
+
+#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(fpu_error);
+BUILD_TRAP_HANDLER(fpu_state_restore);
#define arch_align_stack(x) (x)
+#ifdef CONFIG_SUPERH32
+# include "system_32.h"
+#else
+# include "system_64.h"
+#endif
+
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 22:43:29 +0100