diff options
Diffstat (limited to 'hw/xtensa_pic.c')
| -rw-r--r-- | hw/xtensa_pic.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/hw/xtensa_pic.c b/hw/xtensa_pic.c index 3033ae214a..e5085ea9e7 100644 --- a/hw/xtensa_pic.c +++ b/hw/xtensa_pic.c @@ -116,10 +116,35 @@ void xtensa_timer_irq(CPUState *env, uint32_t id, uint32_t active) qemu_set_irq(env->irq_inputs[env->config->timerint[id]], active); } +void xtensa_rearm_ccompare_timer(CPUState *env) +{ + int i; + uint32_t wake_ccount = env->sregs[CCOUNT] - 1; + + for (i = 0; i < env->config->nccompare; ++i) { + if (env->sregs[CCOMPARE + i] - env->sregs[CCOUNT] < + wake_ccount - env->sregs[CCOUNT]) { + wake_ccount = env->sregs[CCOMPARE + i]; + } + } + env->wake_ccount = wake_ccount; + qemu_mod_timer(env->ccompare_timer, env->halt_clock + + muldiv64(wake_ccount - env->sregs[CCOUNT], + 1000000, env->config->clock_freq_khz)); +} + static void xtensa_ccompare_cb(void *opaque) { CPUState *env = opaque; - xtensa_advance_ccount(env, env->wake_ccount - env->sregs[CCOUNT]); + + if (env->halted) { + env->halt_clock = qemu_get_clock_ns(vm_clock); + xtensa_advance_ccount(env, env->wake_ccount - env->sregs[CCOUNT]); + if (!cpu_has_work(env)) { + env->sregs[CCOUNT] = env->wake_ccount + 1; + xtensa_rearm_ccompare_timer(env); + } + } } void xtensa_irq_init(CPUState *env) |