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target/riscv/kvm: handle the exit with debug reason

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If the breakpoint belongs to the userspace then set the ret value.

Signed-off-by: Chao Du <duchao@eswincomputing.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240606014501.20763-3-duchao@eswincomputing.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Chao Du 2024-06-06 01:45:00 +00:00 committed by Alistair Francis
parent 80b605056d
commit b60520392d
1 changed files with 20 additions and 0 deletions
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20
target/riscv/kvm/kvm-cpu.c
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@ -1555,6 +1555,21 @@ static int kvm_riscv_handle_csr(CPUState *cs, struct kvm_run *run)
return ret;
}
static bool kvm_riscv_handle_debug(CPUState *cs)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
/* Ensure PC is synchronised */
kvm_cpu_synchronize_state(cs);
if (kvm_find_sw_breakpoint(cs, env->pc)) {
return true;
}
return false;
}
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
int ret = 0;
@ -1565,6 +1580,11 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
case KVM_EXIT_RISCV_CSR:
ret = kvm_riscv_handle_csr(cs, run);
break;
case KVM_EXIT_DEBUG:
if (kvm_riscv_handle_debug(cs)) {
ret = EXCP_DEBUG;
}
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n",
__func__, run->exit_reason);