diff options
Diffstat (limited to 'include/asm-v850/system.h')
| -rw-r--r-- | include/asm-v850/system.h | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/include/asm-v850/system.h b/include/asm-v850/system.h deleted file mode 100644 index 7daf1fdee119..000000000000 --- a/include/asm-v850/system.h +++ /dev/null | |||
| @@ -1,123 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * include/asm-v850/system.h -- Low-level interrupt/thread ops | ||
| 3 | * | ||
| 4 | * Copyright (C) 2001,02,03 NEC Electronics Corporation | ||
| 5 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> | ||
| 6 | * | ||
| 7 | * This file is subject to the terms and conditions of the GNU General | ||
| 8 | * Public License. See the file COPYING in the main directory of this | ||
| 9 | * archive for more details. | ||
| 10 | * | ||
| 11 | * Written by Miles Bader <miles@gnu.org> | ||
| 12 | */ | ||
| 13 | |||
| 14 | #ifndef __V850_SYSTEM_H__ | ||
| 15 | #define __V850_SYSTEM_H__ | ||
| 16 | |||
| 17 | #include <linux/linkage.h> | ||
| 18 | #include <asm/ptrace.h> | ||
| 19 | |||
| 20 | |||
| 21 | /* | ||
| 22 | * switch_to(n) should switch tasks to task ptr, first checking that | ||
| 23 | * ptr isn't the current task, in which case it does nothing. | ||
| 24 | */ | ||
| 25 | struct thread_struct; | ||
| 26 | extern void *switch_thread (struct thread_struct *last, | ||
| 27 | struct thread_struct *next); | ||
| 28 | #define switch_to(prev,next,last) \ | ||
| 29 | do { \ | ||
| 30 | if (prev != next) { \ | ||
| 31 | (last) = switch_thread (&prev->thread, &next->thread); \ | ||
| 32 | } \ | ||
| 33 | } while (0) | ||
| 34 | |||
| 35 | |||
| 36 | /* Enable/disable interrupts. */ | ||
| 37 | #define local_irq_enable() __asm__ __volatile__ ("ei") | ||
| 38 | #define local_irq_disable() __asm__ __volatile__ ("di") | ||
| 39 | |||
| 40 | #define local_save_flags(flags) \ | ||
| 41 | __asm__ __volatile__ ("stsr %1, %0" : "=r" (flags) : "i" (SR_PSW)) | ||
| 42 | #define local_restore_flags(flags) \ | ||
| 43 | __asm__ __volatile__ ("ldsr %0, %1" :: "r" (flags), "i" (SR_PSW)) | ||
| 44 | |||
| 45 | /* For spinlocks etc */ | ||
| 46 | #define local_irq_save(flags) \ | ||
| 47 | do { local_save_flags (flags); local_irq_disable (); } while (0) | ||
| 48 | #define local_irq_restore(flags) \ | ||
| 49 | local_restore_flags (flags); | ||
| 50 | |||
| 51 | |||
| 52 | static inline int irqs_disabled (void) | ||
| 53 | { | ||
| 54 | unsigned flags; | ||
| 55 | local_save_flags (flags); | ||
| 56 | return !!(flags & 0x20); | ||
| 57 | } | ||
| 58 | |||
| 59 | |||
| 60 | /* | ||
| 61 | * Force strict CPU ordering. | ||
| 62 | * Not really required on v850... | ||
| 63 | */ | ||
| 64 | #define nop() __asm__ __volatile__ ("nop") | ||
| 65 | #define mb() __asm__ __volatile__ ("" ::: "memory") | ||
| 66 | #define rmb() mb () | ||
| 67 | #define wmb() mb () | ||
| 68 | #define read_barrier_depends() ((void)0) | ||
| 69 | #define set_mb(var, value) do { xchg (&var, value); } while (0) | ||
| 70 | |||
| 71 | #define smp_mb() mb () | ||
| 72 | #define smp_rmb() rmb () | ||
| 73 | #define smp_wmb() wmb () | ||
| 74 | #define smp_read_barrier_depends() read_barrier_depends() | ||
| 75 | |||
| 76 | #define xchg(ptr, with) \ | ||
| 77 | ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr)))) | ||
| 78 | |||
| 79 | static inline unsigned long __xchg (unsigned long with, | ||
| 80 | __volatile__ void *ptr, int size) | ||
| 81 | { | ||
| 82 | unsigned long tmp, flags; | ||
| 83 | |||
| 84 | local_irq_save (flags); | ||
| 85 | |||
| 86 | switch (size) { | ||
| 87 | case 1: | ||
| 88 | tmp = *(unsigned char *)ptr; | ||
| 89 | *(unsigned char *)ptr = with; | ||
| 90 | break; | ||
| 91 | case 2: | ||
| 92 | tmp = *(unsigned short *)ptr; | ||
| 93 | *(unsigned short *)ptr = with; | ||
| 94 | break; | ||
| 95 | case 4: | ||
| 96 | tmp = *(unsigned long *)ptr; | ||
| 97 | *(unsigned long *)ptr = with; | ||
| 98 | break; | ||
| 99 | } | ||
| 100 | |||
| 101 | local_irq_restore (flags); | ||
| 102 | |||
| 103 | return tmp; | ||
| 104 | } | ||
| 105 | |||
| 106 | #include <asm-generic/cmpxchg-local.h> | ||
| 107 | |||
| 108 | /* | ||
| 109 | * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make | ||
| 110 | * them available. | ||
| 111 | */ | ||
| 112 | #define cmpxchg_local(ptr, o, n) \ | ||
| 113 | ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ | ||
| 114 | (unsigned long)(n), sizeof(*(ptr)))) | ||
| 115 | #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) | ||
| 116 | |||
| 117 | #ifndef CONFIG_SMP | ||
| 118 | #include <asm-generic/cmpxchg.h> | ||
| 119 | #endif | ||
| 120 | |||
| 121 | #define arch_align_stack(x) (x) | ||
| 122 | |||
| 123 | #endif /* __V850_SYSTEM_H__ */ | ||