diff options
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index e6c82ab0b8..fa79dfa614 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -560,6 +560,23 @@ static inline bool arm_ccnt_enabled(CPUARMState *env) return true; } +void pmccntr_sync(CPUARMState *env) +{ + uint64_t temp_ticks; + + temp_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL), + get_ticks_per_sec(), 1000000); + + if (env->cp15.c9_pmcr & PMCRD) { + /* Increment once every 64 processor clock cycles */ + temp_ticks /= 64; + } + + if (arm_ccnt_enabled(env)) { + env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt; + } +} + static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { @@ -644,6 +661,12 @@ static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri, pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value)); } +#else /* CONFIG_USER_ONLY */ + +void pmccntr_sync(CPUARMState *env) +{ +} + #endif static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri, |