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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | #ifndef __ASM_ARM_IRQFLAGS_H #define __ASM_ARM_IRQFLAGS_H #ifdef __KERNEL__ #include <asm/ptrace.h> /* * CPU interrupt mask handling. */ #if __LINUX_ARM_ARCH__ >= 6 #define raw_local_irq_save(x) \ ({ \ __asm__ __volatile__( \ "mrs %0, cpsr @ local_irq_save\n" \ "cpsid i" \ : "=r" (x) : : "memory", "cc"); \ }) #define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc") #define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc") #define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc") #define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc") #else /* * Save the current interrupt enable state & disable IRQs */ #define raw_local_irq_save(x) \ ({ \ unsigned long temp; \ (void) (&temp == &x); \ __asm__ __volatile__( \ "mrs %0, cpsr @ local_irq_save\n" \ " orr %1, %0, #128\n" \ " msr cpsr_c, %1" \ : "=r" (x), "=r" (temp) \ : \ : "memory", "cc"); \ }) /* * Enable IRQs */ #define raw_local_irq_enable() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ local_irq_enable\n" \ " bic %0, %0, #128\n" \ " msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory", "cc"); \ }) /* * Disable IRQs */ #define raw_local_irq_disable() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ local_irq_disable\n" \ " orr %0, %0, #128\n" \ " msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory", "cc"); \ }) /* * Enable FIQs */ #define local_fiq_enable() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ stf\n" \ " bic %0, %0, #64\n" \ " msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory", "cc"); \ }) /* * Disable FIQs */ #define local_fiq_disable() \ ({ \ unsigned long temp; \ __asm__ __volatile__( \ "mrs %0, cpsr @ clf\n" \ " orr %0, %0, #64\n" \ " msr cpsr_c, %0" \ : "=r" (temp) \ : \ : "memory", "cc"); \ }) #endif /* * Save the current interrupt enable state. */ #define raw_local_save_flags(x) \ ({ \ __asm__ __volatile__( \ "mrs %0, cpsr @ local_save_flags" \ : "=r" (x) : : "memory", "cc"); \ }) /* * restore saved IRQ & FIQ state */ #define raw_local_irq_restore(x) \ __asm__ __volatile__( \ "msr cpsr_c, %0 @ local_irq_restore\n" \ : \ : "r" (x) \ : "memory", "cc") #define raw_irqs_disabled_flags(flags) \ ({ \ (int)((flags) & PSR_I_BIT); \ }) #endif #endif |