diff options
Diffstat (limited to 'tmk_core/common/wait.h')
| -rw-r--r-- | tmk_core/common/wait.h | 89 |
1 files changed, 58 insertions, 31 deletions
diff --git a/tmk_core/common/wait.h b/tmk_core/common/wait.h index 0b3fd755a9..28224fe3aa 100644 --- a/tmk_core/common/wait.h +++ b/tmk_core/common/wait.h @@ -15,44 +15,71 @@ extern "C" { # define CLOCK_DELAY_NOP8 "nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t" -__attribute__((always_inline)) -static inline void wait_cpuclock_allnop(unsigned int n) { /* n: 1..135 */ +__attribute__((always_inline)) static inline void wait_cpuclock_allnop(unsigned int n) { /* n: 1..135 */ /* The argument n must be a constant expression. * That way, compiler optimization will remove unnecessary code. */ - if (n < 1) { return; } + if (n < 1) { + return; + } if (n > 8) { - unsigned int n8 = n/8; - n = n - n8*8; + unsigned int n8 = n / 8; + n = n - n8 * 8; switch (n8) { - case 16: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 15: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 14: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 13: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 12: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 11: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 10: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 9: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 8: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 7: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 6: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 5: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 4: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 3: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 2: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 1: asm volatile (CLOCK_DELAY_NOP8::: "memory"); - case 0: break; + case 16: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 15: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 14: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 13: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 12: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 11: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 10: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 9: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 8: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 7: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 6: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 5: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 4: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 3: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 2: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 1: + asm volatile(CLOCK_DELAY_NOP8::: "memory"); + case 0: + break; } } switch (n) { - case 8: asm volatile ("nop"::: "memory"); - case 7: asm volatile ("nop"::: "memory"); - case 6: asm volatile ("nop"::: "memory"); - case 5: asm volatile ("nop"::: "memory"); - case 4: asm volatile ("nop"::: "memory"); - case 3: asm volatile ("nop"::: "memory"); - case 2: asm volatile ("nop"::: "memory"); - case 1: asm volatile ("nop"::: "memory"); - case 0: break; + case 8: + asm volatile("nop" ::: "memory"); + case 7: + asm volatile("nop" ::: "memory"); + case 6: + asm volatile("nop" ::: "memory"); + case 5: + asm volatile("nop" ::: "memory"); + case 4: + asm volatile("nop" ::: "memory"); + case 3: + asm volatile("nop" ::: "memory"); + case 2: + asm volatile("nop" ::: "memory"); + case 1: + asm volatile("nop" ::: "memory"); + case 0: + break; } } #endif |