diff options
Diffstat (limited to 'include/asm-sh/system.h')
| -rw-r--r-- | include/asm-sh/system.h | 173 |
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 |