diff options
Diffstat (limited to 'cpukit/score/cpu/riscv/include/rtems/score/cpu.h')
-rw-r--r-- | cpukit/score/cpu/riscv/include/rtems/score/cpu.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/cpukit/score/cpu/riscv/include/rtems/score/cpu.h b/cpukit/score/cpu/riscv/include/rtems/score/cpu.h index e79ce25510..f84395c638 100644 --- a/cpukit/score/cpu/riscv/include/rtems/score/cpu.h +++ b/cpukit/score/cpu/riscv/include/rtems/score/cpu.h @@ -370,7 +370,22 @@ typedef uint32_t CPU_Counter_ticks; uint32_t _CPU_Counter_frequency( void ); -CPU_Counter_ticks _CPU_Counter_read( void ); +static inline CPU_Counter_ticks _CPU_Counter_read( void ) +{ + unsigned long ticks; + + __asm__ volatile ( "rdtime %0" : "=&r" ( ticks ) ); + + return (uint32_t) ticks; +} + +static inline CPU_Counter_ticks _CPU_Counter_difference( + CPU_Counter_ticks second, + CPU_Counter_ticks first +) +{ + return second - first; +} #ifdef RTEMS_SMP |