qemu/target/riscv/machine.c
Richard Henderson e91a7227cb target/riscv: Split misa.mxl and misa.ext
The hw representation of misa.mxl is at the high bits of the
misa csr.  Representing this in the same way inside QEMU
results in overly complex code trying to check that field.

Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20211020031709.359469-4-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-10-22 07:47:51 +10:00

197 lines
6.3 KiB
C

/*
* RISC-V VMState Description
*
* Copyright (c) 2020 Huawei Technologies Co., Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "qemu/error-report.h"
#include "sysemu/kvm.h"
#include "migration/cpu.h"
static bool pmp_needed(void *opaque)
{
RISCVCPU *cpu = opaque;
CPURISCVState *env = &cpu->env;
return riscv_feature(env, RISCV_FEATURE_PMP);
}
static int pmp_post_load(void *opaque, int version_id)
{
RISCVCPU *cpu = opaque;
CPURISCVState *env = &cpu->env;
int i;
for (i = 0; i < MAX_RISCV_PMPS; i++) {
pmp_update_rule_addr(env, i);
}
pmp_update_rule_nums(env);
return 0;
}
static const VMStateDescription vmstate_pmp_entry = {
.name = "cpu/pmp/entry",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(addr_reg, pmp_entry_t),
VMSTATE_UINT8(cfg_reg, pmp_entry_t),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_pmp = {
.name = "cpu/pmp",
.version_id = 1,
.minimum_version_id = 1,
.needed = pmp_needed,
.post_load = pmp_post_load,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_ARRAY(env.pmp_state.pmp, RISCVCPU, MAX_RISCV_PMPS,
0, vmstate_pmp_entry, pmp_entry_t),
VMSTATE_END_OF_LIST()
}
};
static bool hyper_needed(void *opaque)
{
RISCVCPU *cpu = opaque;
CPURISCVState *env = &cpu->env;
return riscv_has_ext(env, RVH);
}
static bool vector_needed(void *opaque)
{
RISCVCPU *cpu = opaque;
CPURISCVState *env = &cpu->env;
return riscv_has_ext(env, RVV);
}
static const VMStateDescription vmstate_vector = {
.name = "cpu/vector",
.version_id = 1,
.minimum_version_id = 1,
.needed = vector_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT64_ARRAY(env.vreg, RISCVCPU, 32 * RV_VLEN_MAX / 64),
VMSTATE_UINTTL(env.vxrm, RISCVCPU),
VMSTATE_UINTTL(env.vxsat, RISCVCPU),
VMSTATE_UINTTL(env.vl, RISCVCPU),
VMSTATE_UINTTL(env.vstart, RISCVCPU),
VMSTATE_UINTTL(env.vtype, RISCVCPU),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_hyper = {
.name = "cpu/hyper",
.version_id = 1,
.minimum_version_id = 1,
.needed = hyper_needed,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(env.hstatus, RISCVCPU),
VMSTATE_UINTTL(env.hedeleg, RISCVCPU),
VMSTATE_UINTTL(env.hideleg, RISCVCPU),
VMSTATE_UINTTL(env.hcounteren, RISCVCPU),
VMSTATE_UINTTL(env.htval, RISCVCPU),
VMSTATE_UINTTL(env.htinst, RISCVCPU),
VMSTATE_UINTTL(env.hgatp, RISCVCPU),
VMSTATE_UINT64(env.htimedelta, RISCVCPU),
VMSTATE_UINT64(env.vsstatus, RISCVCPU),
VMSTATE_UINTTL(env.vstvec, RISCVCPU),
VMSTATE_UINTTL(env.vsscratch, RISCVCPU),
VMSTATE_UINTTL(env.vsepc, RISCVCPU),
VMSTATE_UINTTL(env.vscause, RISCVCPU),
VMSTATE_UINTTL(env.vstval, RISCVCPU),
VMSTATE_UINTTL(env.vsatp, RISCVCPU),
VMSTATE_UINTTL(env.mtval2, RISCVCPU),
VMSTATE_UINTTL(env.mtinst, RISCVCPU),
VMSTATE_UINTTL(env.stvec_hs, RISCVCPU),
VMSTATE_UINTTL(env.sscratch_hs, RISCVCPU),
VMSTATE_UINTTL(env.sepc_hs, RISCVCPU),
VMSTATE_UINTTL(env.scause_hs, RISCVCPU),
VMSTATE_UINTTL(env.stval_hs, RISCVCPU),
VMSTATE_UINTTL(env.satp_hs, RISCVCPU),
VMSTATE_UINT64(env.mstatus_hs, RISCVCPU),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_riscv_cpu = {
.name = "cpu",
.version_id = 3,
.minimum_version_id = 3,
.fields = (VMStateField[]) {
VMSTATE_UINTTL_ARRAY(env.gpr, RISCVCPU, 32),
VMSTATE_UINT64_ARRAY(env.fpr, RISCVCPU, 32),
VMSTATE_UINTTL(env.pc, RISCVCPU),
VMSTATE_UINTTL(env.load_res, RISCVCPU),
VMSTATE_UINTTL(env.load_val, RISCVCPU),
VMSTATE_UINTTL(env.frm, RISCVCPU),
VMSTATE_UINTTL(env.badaddr, RISCVCPU),
VMSTATE_UINTTL(env.guest_phys_fault_addr, RISCVCPU),
VMSTATE_UINTTL(env.priv_ver, RISCVCPU),
VMSTATE_UINTTL(env.vext_ver, RISCVCPU),
VMSTATE_UINT32(env.misa_mxl, RISCVCPU),
VMSTATE_UINT32(env.misa_ext, RISCVCPU),
VMSTATE_UINT32(env.misa_mxl_max, RISCVCPU),
VMSTATE_UINT32(env.misa_ext_mask, RISCVCPU),
VMSTATE_UINT32(env.features, RISCVCPU),
VMSTATE_UINTTL(env.priv, RISCVCPU),
VMSTATE_UINTTL(env.virt, RISCVCPU),
VMSTATE_UINTTL(env.resetvec, RISCVCPU),
VMSTATE_UINTTL(env.mhartid, RISCVCPU),
VMSTATE_UINT64(env.mstatus, RISCVCPU),
VMSTATE_UINTTL(env.mip, RISCVCPU),
VMSTATE_UINT32(env.miclaim, RISCVCPU),
VMSTATE_UINTTL(env.mie, RISCVCPU),
VMSTATE_UINTTL(env.mideleg, RISCVCPU),
VMSTATE_UINTTL(env.satp, RISCVCPU),
VMSTATE_UINTTL(env.stval, RISCVCPU),
VMSTATE_UINTTL(env.medeleg, RISCVCPU),
VMSTATE_UINTTL(env.stvec, RISCVCPU),
VMSTATE_UINTTL(env.sepc, RISCVCPU),
VMSTATE_UINTTL(env.scause, RISCVCPU),
VMSTATE_UINTTL(env.mtvec, RISCVCPU),
VMSTATE_UINTTL(env.mepc, RISCVCPU),
VMSTATE_UINTTL(env.mcause, RISCVCPU),
VMSTATE_UINTTL(env.mtval, RISCVCPU),
VMSTATE_UINTTL(env.scounteren, RISCVCPU),
VMSTATE_UINTTL(env.mcounteren, RISCVCPU),
VMSTATE_UINTTL(env.sscratch, RISCVCPU),
VMSTATE_UINTTL(env.mscratch, RISCVCPU),
VMSTATE_UINT64(env.mfromhost, RISCVCPU),
VMSTATE_UINT64(env.mtohost, RISCVCPU),
VMSTATE_UINT64(env.timecmp, RISCVCPU),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription * []) {
&vmstate_pmp,
&vmstate_hyper,
&vmstate_vector,
NULL
}
};