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target/riscv: Add itrigger_enabled field to CPURISCVState

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Avoid calling riscv_itrigger_enabled() when calculate the tbflags.
As the itrigger enable status can only be changed when write
tdata1, migration load or itrigger fire, update env->itrigger_enabled
at these places.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20221013062946.7530-5-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2022-10-13 14:29:46 +08:00 • committed by Alistair Francis
parent 91809598a0
commit 577f028694
4 changed files with 20 additions and 2 deletions
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15
target/riscv/machine.c
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@ -21,6 +21,8 @@
#include "qemu/error-report.h"
#include "sysemu/kvm.h"
#include "migration/cpu.h"
#include "sysemu/cpu-timers.h"
#include "debug.h"
static bool pmp_needed(void *opaque)
{
@ -229,11 +231,24 @@ static bool debug_needed(void *opaque)
return riscv_feature(env, RISCV_FEATURE_DEBUG);
}
static int debug_post_load(void *opaque, int version_id)
{
RISCVCPU *cpu = opaque;
CPURISCVState *env = &cpu->env;
if (icount_enabled()) {
env->itrigger_enabled = riscv_itrigger_enabled(env);
}
return 0;
}
static const VMStateDescription vmstate_debug = {
.name = "cpu/debug",
.version_id = 2,
.minimum_version_id = 2,
.needed = debug_needed,
.post_load = debug_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(env.trigger_cur, RISCVCPU),
VMSTATE_UINTTL_ARRAY(env.tdata1, RISCVCPU, RV_MAX_TRIGGERS),