Get GPR CSR and FP registers from kvm by KVM_GET_ONE_REG ioctl.
Signed-off-by: Yifei Jiang <jiangyifei(a)huawei.com>
Signed-off-by: Mingwang Li <limingwang(a)huawei.com>
Reviewed-by: Alistair Francis <alistair.francis(a)wdc.com>
Reviewed-by: Anup Patel <anup.patel(a)wdc.com>
---
target/riscv/kvm.c | 112 ++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 111 insertions(+), 1 deletion(-)
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index ccf3753048..6d4df0ef6d 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -55,13 +55,123 @@ static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type,
uint64_t idx
return id;
}
+#define RISCV_CORE_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, \
+ KVM_REG_RISCV_CORE_REG(name))
+
+#define RISCV_CSR_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CSR, \
+ KVM_REG_RISCV_CSR_REG(name))
+
+#define RISCV_FP_F_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_F, idx)
+
+#define RISCV_FP_D_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_D, idx)
+
+#define KVM_RISCV_GET_CSR(cs, env, csr, reg) \
+ do { \
+ int ret = kvm_get_one_reg(cs, RISCV_CSR_REG(env, csr), ®); \
+ if (ret) { \
+ return ret; \
+ } \
+ } while(0)
+
+static int kvm_riscv_get_regs_core(CPUState *cs)
+{
+ int ret = 0;
+ int i;
+ target_ulong reg;
+ CPURISCVState *env = &RISCV_CPU(cs)->env;
+
+ ret = kvm_get_one_reg(cs, RISCV_CORE_REG(env, regs.pc), ®);
+ if (ret) {
+ return ret;
+ }
+ env->pc = reg;
+
+ for (i = 1; i < 32; i++) {
+ uint64_t id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, i);
+ ret = kvm_get_one_reg(cs, id, ®);
+ if (ret) {
+ return ret;
+ }
+ env->gpr[i] = reg;
+ }
+
+ return ret;
+}
+
+static int kvm_riscv_get_regs_csr(CPUState *cs)
+{
+ int ret = 0;
+ CPURISCVState *env = &RISCV_CPU(cs)->env;
+
+ KVM_RISCV_GET_CSR(cs, env, sstatus, env->mstatus);
+ KVM_RISCV_GET_CSR(cs, env, sie, env->mie);
+ KVM_RISCV_GET_CSR(cs, env, stvec, env->stvec);
+ KVM_RISCV_GET_CSR(cs, env, sscratch, env->sscratch);
+ KVM_RISCV_GET_CSR(cs, env, sepc, env->sepc);
+ KVM_RISCV_GET_CSR(cs, env, scause, env->scause);
+ KVM_RISCV_GET_CSR(cs, env, stval, env->stval);
+ KVM_RISCV_GET_CSR(cs, env, sip, env->mip);
+ KVM_RISCV_GET_CSR(cs, env, satp, env->satp);
+ return ret;
+}
+
+static int kvm_riscv_get_regs_fp(CPUState *cs)
+{
+ int ret = 0;
+ int i;
+ CPURISCVState *env = &RISCV_CPU(cs)->env;
+
+ if (riscv_has_ext(env, RVD)) {
+ uint64_t reg;
+ for (i = 0; i < 32; i++) {
+ ret = kvm_get_one_reg(cs, RISCV_FP_D_REG(env, i), ®);
+ if (ret) {
+ return ret;
+ }
+ env->fpr[i] = reg;
+ }
+ return ret;
+ }
+
+ if (riscv_has_ext(env, RVF)) {
+ uint32_t reg;
+ for (i = 0; i < 32; i++) {
+ ret = kvm_get_one_reg(cs, RISCV_FP_F_REG(env, i), ®);
+ if (ret) {
+ return ret;
+ }
+ env->fpr[i] = reg;
+ }
+ return ret;
+ }
+
+ return ret;
+}
+
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
int kvm_arch_get_registers(CPUState *cs)
{
- return 0;
+ int ret = 0;
+
+ ret = kvm_riscv_get_regs_core(cs);
+ if (ret) {
+ return ret;
+ }
+
+ ret = kvm_riscv_get_regs_csr(cs);
+ if (ret) {
+ return ret;
+ }
+
+ ret = kvm_riscv_get_regs_fp(cs);
+ if (ret) {
+ return ret;
+ }
+
+ return ret;
}
int kvm_arch_put_registers(CPUState *cs, int level)
--
2.19.1