diff options
Diffstat (limited to 'src/arch/arm/include')
| -rw-r--r-- | src/arch/arm/include/armv7/arch/io.h | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/src/arch/arm/include/armv7/arch/io.h b/src/arch/arm/include/armv7/arch/io.h index 87797bd0eb..1772659fec 100644 --- a/src/arch/arm/include/armv7/arch/io.h +++ b/src/arch/arm/include/armv7/arch/io.h @@ -34,49 +34,40 @@ static inline uint8_t read8(const void *addr) { - uint8_t val; - dmb(); - asm volatile ("ldrb %0, [%1]" : "=r" (val) : "r" (addr) : "memory"); - return val; + return *(volatile uint8_t *)__builtin_assume_aligned(addr, sizeof(uint8_t)); } static inline uint16_t read16(const void *addr) { - uint16_t val; - dmb(); - asm volatile ("ldrh %0, [%1]" : "=r" (val) : "r" (addr) : "memory"); - return val; + return *(volatile uint16_t *)__builtin_assume_aligned(addr, sizeof(uint16_t)); } static inline uint32_t read32(const void *addr) { - uint32_t val; - dmb(); - asm volatile ("ldr %0, [%1]" : "=r" (val) : "r" (addr) : "memory"); - return val; + return *(volatile uint32_t *)__builtin_assume_aligned(addr, sizeof(uint32_t)); } static inline void write8(void *addr, uint8_t val) { dmb(); - asm volatile ("strb %0, [%1]" : : "r" (val), "r" (addr) : "memory"); + *(volatile uint8_t *)__builtin_assume_aligned(addr, sizeof(uint8_t)) = val; dmb(); } static inline void write16(void *addr, uint16_t val) { dmb(); - asm volatile ("strh %0, [%1]" : : "r" (val), "r" (addr) : "memory"); + *(volatile uint16_t *)__builtin_assume_aligned(addr, sizeof(uint16_t)) = val; dmb(); } static inline void write32(void *addr, uint32_t val) { dmb(); - asm volatile ("str %0, [%1]" : : "r" (val), "r" (addr) : "memory"); + *(volatile uint32_t *)__builtin_assume_aligned(addr, sizeof(uint32_t)) = val; dmb(); } |