440544e1cf
Current xlen has been used in helper functions and many other places. The computation of current xlen is not so trivial, so that we should recompute it as little as possible. Fortunately, xlen only changes in very seldom cases, such as exception, misa write, mstatus write, cpu reset, migration load. So that we can only recompute xlen in this places and cache it into CPURISCVState. Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220120122050.41546-6-zhiwei_liu@c-sky.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2307 lines
75 KiB
C
2307 lines
75 KiB
C
/*
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* RISC-V Control and Status Registers.
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*
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* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
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* Copyright (c) 2017-2018 SiFive, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "cpu.h"
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#include "qemu/main-loop.h"
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#include "exec/exec-all.h"
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/* CSR function table public API */
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void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops)
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{
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*ops = csr_ops[csrno & (CSR_TABLE_SIZE - 1)];
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}
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void riscv_set_csr_ops(int csrno, riscv_csr_operations *ops)
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{
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csr_ops[csrno & (CSR_TABLE_SIZE - 1)] = *ops;
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}
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/* Predicates */
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static RISCVException fs(CPURISCVState *env, int csrno)
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{
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#if !defined(CONFIG_USER_ONLY)
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if (!env->debugger && !riscv_cpu_fp_enabled(env)) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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#endif
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return RISCV_EXCP_NONE;
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}
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static RISCVException vs(CPURISCVState *env, int csrno)
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{
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CPUState *cs = env_cpu(env);
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RISCVCPU *cpu = RISCV_CPU(cs);
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if (env->misa_ext & RVV ||
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cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) {
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#if !defined(CONFIG_USER_ONLY)
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if (!env->debugger && !riscv_cpu_vector_enabled(env)) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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#endif
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return RISCV_EXCP_NONE;
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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static RISCVException ctr(CPURISCVState *env, int csrno)
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{
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#if !defined(CONFIG_USER_ONLY)
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CPUState *cs = env_cpu(env);
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RISCVCPU *cpu = RISCV_CPU(cs);
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if (!cpu->cfg.ext_counters) {
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/* The Counters extensions is not enabled */
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return RISCV_EXCP_ILLEGAL_INST;
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}
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if (riscv_cpu_virt_enabled(env)) {
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switch (csrno) {
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case CSR_CYCLE:
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if (!get_field(env->hcounteren, COUNTEREN_CY) &&
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get_field(env->mcounteren, COUNTEREN_CY)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_TIME:
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if (!get_field(env->hcounteren, COUNTEREN_TM) &&
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get_field(env->mcounteren, COUNTEREN_TM)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_INSTRET:
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if (!get_field(env->hcounteren, COUNTEREN_IR) &&
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get_field(env->mcounteren, COUNTEREN_IR)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_HPMCOUNTER3...CSR_HPMCOUNTER31:
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if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3)) &&
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get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3))) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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}
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if (riscv_cpu_mxl(env) == MXL_RV32) {
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switch (csrno) {
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case CSR_CYCLEH:
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if (!get_field(env->hcounteren, COUNTEREN_CY) &&
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get_field(env->mcounteren, COUNTEREN_CY)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_TIMEH:
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if (!get_field(env->hcounteren, COUNTEREN_TM) &&
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get_field(env->mcounteren, COUNTEREN_TM)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_INSTRETH:
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if (!get_field(env->hcounteren, COUNTEREN_IR) &&
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get_field(env->mcounteren, COUNTEREN_IR)) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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case CSR_HPMCOUNTER3H...CSR_HPMCOUNTER31H:
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if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3H)) &&
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get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3H))) {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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break;
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}
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}
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}
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#endif
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return RISCV_EXCP_NONE;
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}
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static RISCVException ctr32(CPURISCVState *env, int csrno)
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{
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if (riscv_cpu_mxl(env) != MXL_RV32) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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return ctr(env, csrno);
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}
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#if !defined(CONFIG_USER_ONLY)
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static RISCVException any(CPURISCVState *env, int csrno)
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{
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return RISCV_EXCP_NONE;
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}
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static RISCVException any32(CPURISCVState *env, int csrno)
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{
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if (riscv_cpu_mxl(env) != MXL_RV32) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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return any(env, csrno);
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}
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static RISCVException smode(CPURISCVState *env, int csrno)
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{
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if (riscv_has_ext(env, RVS)) {
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return RISCV_EXCP_NONE;
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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static RISCVException hmode(CPURISCVState *env, int csrno)
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{
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if (riscv_has_ext(env, RVS) &&
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riscv_has_ext(env, RVH)) {
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/* Hypervisor extension is supported */
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if ((env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) ||
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env->priv == PRV_M) {
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return RISCV_EXCP_NONE;
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} else {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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static RISCVException hmode32(CPURISCVState *env, int csrno)
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{
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if (riscv_cpu_mxl(env) != MXL_RV32) {
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if (riscv_cpu_virt_enabled(env)) {
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return RISCV_EXCP_ILLEGAL_INST;
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} else {
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return RISCV_EXCP_VIRT_INSTRUCTION_FAULT;
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}
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}
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return hmode(env, csrno);
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}
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/* Checks if PointerMasking registers could be accessed */
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static RISCVException pointer_masking(CPURISCVState *env, int csrno)
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{
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/* Check if j-ext is present */
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if (riscv_has_ext(env, RVJ)) {
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return RISCV_EXCP_NONE;
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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static RISCVException pmp(CPURISCVState *env, int csrno)
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{
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if (riscv_feature(env, RISCV_FEATURE_PMP)) {
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return RISCV_EXCP_NONE;
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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static RISCVException epmp(CPURISCVState *env, int csrno)
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{
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if (env->priv == PRV_M && riscv_feature(env, RISCV_FEATURE_EPMP)) {
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return RISCV_EXCP_NONE;
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}
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return RISCV_EXCP_ILLEGAL_INST;
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}
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#endif
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/* User Floating-Point CSRs */
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static RISCVException read_fflags(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = riscv_cpu_get_fflags(env);
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_fflags(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_FS;
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#endif
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riscv_cpu_set_fflags(env, val & (FSR_AEXC >> FSR_AEXC_SHIFT));
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_frm(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->frm;
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_frm(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_FS;
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#endif
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env->frm = val & (FSR_RD >> FSR_RD_SHIFT);
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_fcsr(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = (riscv_cpu_get_fflags(env) << FSR_AEXC_SHIFT)
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| (env->frm << FSR_RD_SHIFT);
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_fcsr(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_FS;
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#endif
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env->frm = (val & FSR_RD) >> FSR_RD_SHIFT;
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riscv_cpu_set_fflags(env, (val & FSR_AEXC) >> FSR_AEXC_SHIFT);
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_vtype(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->vtype;
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_vl(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->vl;
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return RISCV_EXCP_NONE;
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}
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static int read_vlenb(CPURISCVState *env, int csrno, target_ulong *val)
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{
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*val = env_archcpu(env)->cfg.vlen >> 3;
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_vxrm(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->vxrm;
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_vxrm(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_VS;
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#endif
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env->vxrm = val;
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_vxsat(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->vxsat;
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_vxsat(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_VS;
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#endif
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env->vxsat = val;
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_vstart(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = env->vstart;
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return RISCV_EXCP_NONE;
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}
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static RISCVException write_vstart(CPURISCVState *env, int csrno,
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target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_VS;
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#endif
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/*
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* The vstart CSR is defined to have only enough writable bits
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* to hold the largest element index, i.e. lg2(VLEN) bits.
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*/
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env->vstart = val & ~(~0ULL << ctzl(env_archcpu(env)->cfg.vlen));
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return RISCV_EXCP_NONE;
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}
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static int read_vcsr(CPURISCVState *env, int csrno, target_ulong *val)
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{
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*val = (env->vxrm << VCSR_VXRM_SHIFT) | (env->vxsat << VCSR_VXSAT_SHIFT);
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return RISCV_EXCP_NONE;
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}
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static int write_vcsr(CPURISCVState *env, int csrno, target_ulong val)
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{
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#if !defined(CONFIG_USER_ONLY)
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env->mstatus |= MSTATUS_VS;
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#endif
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env->vxrm = (val & VCSR_VXRM) >> VCSR_VXRM_SHIFT;
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env->vxsat = (val & VCSR_VXSAT) >> VCSR_VXSAT_SHIFT;
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return RISCV_EXCP_NONE;
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}
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/* User Timers and Counters */
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static RISCVException read_instret(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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#if !defined(CONFIG_USER_ONLY)
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if (icount_enabled()) {
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*val = icount_get();
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} else {
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*val = cpu_get_host_ticks();
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}
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#else
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*val = cpu_get_host_ticks();
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#endif
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_instreth(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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#if !defined(CONFIG_USER_ONLY)
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if (icount_enabled()) {
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*val = icount_get() >> 32;
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} else {
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*val = cpu_get_host_ticks() >> 32;
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}
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#else
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*val = cpu_get_host_ticks() >> 32;
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#endif
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return RISCV_EXCP_NONE;
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}
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#if defined(CONFIG_USER_ONLY)
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static RISCVException read_time(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = cpu_get_host_ticks();
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_timeh(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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*val = cpu_get_host_ticks() >> 32;
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return RISCV_EXCP_NONE;
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}
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#else /* CONFIG_USER_ONLY */
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static RISCVException read_time(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0;
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if (!env->rdtime_fn) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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*val = env->rdtime_fn(env->rdtime_fn_arg) + delta;
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return RISCV_EXCP_NONE;
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}
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static RISCVException read_timeh(CPURISCVState *env, int csrno,
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target_ulong *val)
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{
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uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0;
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if (!env->rdtime_fn) {
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return RISCV_EXCP_ILLEGAL_INST;
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}
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*val = (env->rdtime_fn(env->rdtime_fn_arg) + delta) >> 32;
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return RISCV_EXCP_NONE;
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}
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/* Machine constants */
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#define M_MODE_INTERRUPTS (MIP_MSIP | MIP_MTIP | MIP_MEIP)
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#define S_MODE_INTERRUPTS (MIP_SSIP | MIP_STIP | MIP_SEIP)
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#define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)
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static const target_ulong delegable_ints = S_MODE_INTERRUPTS |
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VS_MODE_INTERRUPTS;
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static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS;
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static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS |
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VS_MODE_INTERRUPTS;
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#define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \
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(1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \
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(1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \
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(1ULL << (RISCV_EXCP_BREAKPOINT)) | \
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(1ULL << (RISCV_EXCP_LOAD_ADDR_MIS)) | \
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(1ULL << (RISCV_EXCP_LOAD_ACCESS_FAULT)) | \
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(1ULL << (RISCV_EXCP_STORE_AMO_ADDR_MIS)) | \
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(1ULL << (RISCV_EXCP_STORE_AMO_ACCESS_FAULT)) | \
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(1ULL << (RISCV_EXCP_U_ECALL)) | \
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(1ULL << (RISCV_EXCP_S_ECALL)) | \
|
|
(1ULL << (RISCV_EXCP_VS_ECALL)) | \
|
|
(1ULL << (RISCV_EXCP_M_ECALL)) | \
|
|
(1ULL << (RISCV_EXCP_INST_PAGE_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_LOAD_PAGE_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_STORE_PAGE_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) | \
|
|
(1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT)))
|
|
static const target_ulong vs_delegable_excps = DELEGABLE_EXCPS &
|
|
~((1ULL << (RISCV_EXCP_S_ECALL)) |
|
|
(1ULL << (RISCV_EXCP_VS_ECALL)) |
|
|
(1ULL << (RISCV_EXCP_M_ECALL)) |
|
|
(1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) |
|
|
(1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) |
|
|
(1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) |
|
|
(1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT)));
|
|
static const target_ulong sstatus_v1_10_mask = SSTATUS_SIE | SSTATUS_SPIE |
|
|
SSTATUS_UIE | SSTATUS_UPIE | SSTATUS_SPP | SSTATUS_FS | SSTATUS_XS |
|
|
SSTATUS_SUM | SSTATUS_MXR | SSTATUS_VS | (target_ulong)SSTATUS64_UXL;
|
|
static const target_ulong sip_writable_mask = SIP_SSIP | MIP_USIP | MIP_UEIP;
|
|
static const target_ulong hip_writable_mask = MIP_VSSIP;
|
|
static const target_ulong hvip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP;
|
|
static const target_ulong vsip_writable_mask = MIP_VSSIP;
|
|
|
|
static const char valid_vm_1_10_32[16] = {
|
|
[VM_1_10_MBARE] = 1,
|
|
[VM_1_10_SV32] = 1
|
|
};
|
|
|
|
static const char valid_vm_1_10_64[16] = {
|
|
[VM_1_10_MBARE] = 1,
|
|
[VM_1_10_SV39] = 1,
|
|
[VM_1_10_SV48] = 1,
|
|
[VM_1_10_SV57] = 1
|
|
};
|
|
|
|
/* Machine Information Registers */
|
|
static RISCVException read_zero(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = 0;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mhartid(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mhartid;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Machine Trap Setup */
|
|
|
|
/* We do not store SD explicitly, only compute it on demand. */
|
|
static uint64_t add_status_sd(RISCVMXL xl, uint64_t status)
|
|
{
|
|
if ((status & MSTATUS_FS) == MSTATUS_FS ||
|
|
(status & MSTATUS_VS) == MSTATUS_VS ||
|
|
(status & MSTATUS_XS) == MSTATUS_XS) {
|
|
switch (xl) {
|
|
case MXL_RV32:
|
|
return status | MSTATUS32_SD;
|
|
case MXL_RV64:
|
|
return status | MSTATUS64_SD;
|
|
case MXL_RV128:
|
|
return MSTATUSH128_SD;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static RISCVException read_mstatus(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = add_status_sd(riscv_cpu_mxl(env), env->mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static int validate_vm(CPURISCVState *env, target_ulong vm)
|
|
{
|
|
if (riscv_cpu_mxl(env) == MXL_RV32) {
|
|
return valid_vm_1_10_32[vm & 0xf];
|
|
} else {
|
|
return valid_vm_1_10_64[vm & 0xf];
|
|
}
|
|
}
|
|
|
|
static RISCVException write_mstatus(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus = env->mstatus;
|
|
uint64_t mask = 0;
|
|
|
|
/* flush tlb on mstatus fields that affect VM */
|
|
if ((val ^ mstatus) & (MSTATUS_MXR | MSTATUS_MPP | MSTATUS_MPV |
|
|
MSTATUS_MPRV | MSTATUS_SUM)) {
|
|
tlb_flush(env_cpu(env));
|
|
}
|
|
mask = MSTATUS_SIE | MSTATUS_SPIE | MSTATUS_MIE | MSTATUS_MPIE |
|
|
MSTATUS_SPP | MSTATUS_FS | MSTATUS_MPRV | MSTATUS_SUM |
|
|
MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR |
|
|
MSTATUS_TW | MSTATUS_VS;
|
|
|
|
if (riscv_cpu_mxl(env) != MXL_RV32) {
|
|
/*
|
|
* RV32: MPV and GVA are not in mstatus. The current plan is to
|
|
* add them to mstatush. For now, we just don't support it.
|
|
*/
|
|
mask |= MSTATUS_MPV | MSTATUS_GVA;
|
|
}
|
|
|
|
mstatus = (mstatus & ~mask) | (val & mask);
|
|
|
|
RISCVMXL xl = riscv_cpu_mxl(env);
|
|
if (xl > MXL_RV32) {
|
|
/* SXL and UXL fields are for now read only */
|
|
mstatus = set_field(mstatus, MSTATUS64_SXL, xl);
|
|
mstatus = set_field(mstatus, MSTATUS64_UXL, xl);
|
|
}
|
|
env->mstatus = mstatus;
|
|
env->xl = cpu_recompute_xl(env);
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mstatush(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mstatus >> 32;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mstatush(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t valh = (uint64_t)val << 32;
|
|
uint64_t mask = MSTATUS_MPV | MSTATUS_GVA;
|
|
|
|
if ((valh ^ env->mstatus) & (MSTATUS_MPV)) {
|
|
tlb_flush(env_cpu(env));
|
|
}
|
|
|
|
env->mstatus = (env->mstatus & ~mask) | (valh & mask);
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mstatus_i128(CPURISCVState *env, int csrno,
|
|
Int128 *val)
|
|
{
|
|
*val = int128_make128(env->mstatus, add_status_sd(MXL_RV128, env->mstatus));
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_misa_i128(CPURISCVState *env, int csrno,
|
|
Int128 *val)
|
|
{
|
|
*val = int128_make128(env->misa_ext, (uint64_t)MXL_RV128 << 62);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_misa(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
target_ulong misa;
|
|
|
|
switch (env->misa_mxl) {
|
|
case MXL_RV32:
|
|
misa = (target_ulong)MXL_RV32 << 30;
|
|
break;
|
|
#ifdef TARGET_RISCV64
|
|
case MXL_RV64:
|
|
misa = (target_ulong)MXL_RV64 << 62;
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
*val = misa | env->misa_ext;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_misa(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
if (!riscv_feature(env, RISCV_FEATURE_MISA)) {
|
|
/* drop write to misa */
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* 'I' or 'E' must be present */
|
|
if (!(val & (RVI | RVE))) {
|
|
/* It is not, drop write to misa */
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* 'E' excludes all other extensions */
|
|
if (val & RVE) {
|
|
/* when we support 'E' we can do "val = RVE;" however
|
|
* for now we just drop writes if 'E' is present.
|
|
*/
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/*
|
|
* misa.MXL writes are not supported by QEMU.
|
|
* Drop writes to those bits.
|
|
*/
|
|
|
|
/* Mask extensions that are not supported by this hart */
|
|
val &= env->misa_ext_mask;
|
|
|
|
/* Mask extensions that are not supported by QEMU */
|
|
val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU | RVV);
|
|
|
|
/* 'D' depends on 'F', so clear 'D' if 'F' is not present */
|
|
if ((val & RVD) && !(val & RVF)) {
|
|
val &= ~RVD;
|
|
}
|
|
|
|
/* Suppress 'C' if next instruction is not aligned
|
|
* TODO: this should check next_pc
|
|
*/
|
|
if ((val & RVC) && (GETPC() & ~3) != 0) {
|
|
val &= ~RVC;
|
|
}
|
|
|
|
/* If nothing changed, do nothing. */
|
|
if (val == env->misa_ext) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* flush translation cache */
|
|
tb_flush(env_cpu(env));
|
|
env->misa_ext = val;
|
|
env->xl = riscv_cpu_mxl(env);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_medeleg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->medeleg;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_medeleg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->medeleg = (env->medeleg & ~DELEGABLE_EXCPS) | (val & DELEGABLE_EXCPS);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mideleg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mideleg;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mideleg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints);
|
|
if (riscv_has_ext(env, RVH)) {
|
|
env->mideleg |= VS_MODE_INTERRUPTS;
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mie(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mie;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mie(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mie = (env->mie & ~all_ints) | (val & all_ints);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mtvec(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mtvec;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mtvec(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
/* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */
|
|
if ((val & 3) < 2) {
|
|
env->mtvec = val;
|
|
} else {
|
|
qemu_log_mask(LOG_UNIMP, "CSR_MTVEC: reserved mode not supported\n");
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mcounteren(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mcounteren;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mcounteren(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mcounteren = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Machine Trap Handling */
|
|
static RISCVException read_mscratch_i128(CPURISCVState *env, int csrno,
|
|
Int128 *val)
|
|
{
|
|
*val = int128_make128(env->mscratch, env->mscratchh);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mscratch_i128(CPURISCVState *env, int csrno,
|
|
Int128 val)
|
|
{
|
|
env->mscratch = int128_getlo(val);
|
|
env->mscratchh = int128_gethi(val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mscratch(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mscratch;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mscratch(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mscratch = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mepc(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mepc;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mepc(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mepc = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mcause(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mcause;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mcause(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mcause = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mtval(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mtval;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mtval(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mtval = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException rmw_mip(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
RISCVCPU *cpu = env_archcpu(env);
|
|
/* Allow software control of delegable interrupts not claimed by hardware */
|
|
target_ulong mask = write_mask & delegable_ints & ~env->miclaim;
|
|
uint32_t old_mip;
|
|
|
|
if (mask) {
|
|
old_mip = riscv_cpu_update_mip(cpu, mask, (new_value & mask));
|
|
} else {
|
|
old_mip = env->mip;
|
|
}
|
|
|
|
if (ret_value) {
|
|
*ret_value = old_mip;
|
|
}
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Supervisor Trap Setup */
|
|
static RISCVException read_sstatus_i128(CPURISCVState *env, int csrno,
|
|
Int128 *val)
|
|
{
|
|
uint64_t mask = sstatus_v1_10_mask;
|
|
uint64_t sstatus = env->mstatus & mask;
|
|
|
|
*val = int128_make128(sstatus, add_status_sd(MXL_RV128, sstatus));
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_sstatus(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
target_ulong mask = (sstatus_v1_10_mask);
|
|
|
|
/* TODO: Use SXL not MXL. */
|
|
*val = add_status_sd(riscv_cpu_mxl(env), env->mstatus & mask);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_sstatus(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
target_ulong mask = (sstatus_v1_10_mask);
|
|
target_ulong newval = (env->mstatus & ~mask) | (val & mask);
|
|
return write_mstatus(env, CSR_MSTATUS, newval);
|
|
}
|
|
|
|
static RISCVException read_vsie(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
/* Shift the VS bits to their S bit location in vsie */
|
|
*val = (env->mie & env->hideleg & VS_MODE_INTERRUPTS) >> 1;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_sie(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
if (riscv_cpu_virt_enabled(env)) {
|
|
read_vsie(env, CSR_VSIE, val);
|
|
} else {
|
|
*val = env->mie & env->mideleg;
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vsie(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
/* Shift the S bits to their VS bit location in mie */
|
|
target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) |
|
|
((val << 1) & env->hideleg & VS_MODE_INTERRUPTS);
|
|
return write_mie(env, CSR_MIE, newval);
|
|
}
|
|
|
|
static int write_sie(CPURISCVState *env, int csrno, target_ulong val)
|
|
{
|
|
if (riscv_cpu_virt_enabled(env)) {
|
|
write_vsie(env, CSR_VSIE, val);
|
|
} else {
|
|
target_ulong newval = (env->mie & ~S_MODE_INTERRUPTS) |
|
|
(val & S_MODE_INTERRUPTS);
|
|
write_mie(env, CSR_MIE, newval);
|
|
}
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_stvec(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->stvec;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_stvec(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
/* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */
|
|
if ((val & 3) < 2) {
|
|
env->stvec = val;
|
|
} else {
|
|
qemu_log_mask(LOG_UNIMP, "CSR_STVEC: reserved mode not supported\n");
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_scounteren(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->scounteren;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_scounteren(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->scounteren = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Supervisor Trap Handling */
|
|
static RISCVException read_sscratch_i128(CPURISCVState *env, int csrno,
|
|
Int128 *val)
|
|
{
|
|
*val = int128_make128(env->sscratch, env->sscratchh);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_sscratch_i128(CPURISCVState *env, int csrno,
|
|
Int128 val)
|
|
{
|
|
env->sscratch = int128_getlo(val);
|
|
env->sscratchh = int128_gethi(val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_sscratch(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->sscratch;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_sscratch(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->sscratch = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_sepc(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->sepc;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_sepc(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->sepc = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_scause(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->scause;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_scause(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->scause = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_stval(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->stval;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_stval(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->stval = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException rmw_vsip(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
/* Shift the S bits to their VS bit location in mip */
|
|
int ret = rmw_mip(env, 0, ret_value, new_value << 1,
|
|
(write_mask << 1) & vsip_writable_mask & env->hideleg);
|
|
|
|
if (ret_value) {
|
|
*ret_value &= VS_MODE_INTERRUPTS;
|
|
/* Shift the VS bits to their S bit location in vsip */
|
|
*ret_value >>= 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static RISCVException rmw_sip(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
int ret;
|
|
|
|
if (riscv_cpu_virt_enabled(env)) {
|
|
ret = rmw_vsip(env, CSR_VSIP, ret_value, new_value, write_mask);
|
|
} else {
|
|
ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value,
|
|
write_mask & env->mideleg & sip_writable_mask);
|
|
}
|
|
|
|
if (ret_value) {
|
|
*ret_value &= env->mideleg;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Supervisor Protection and Translation */
|
|
static RISCVException read_satp(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
if (!riscv_feature(env, RISCV_FEATURE_MMU)) {
|
|
*val = 0;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
} else {
|
|
*val = env->satp;
|
|
}
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_satp(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
target_ulong vm, mask, asid;
|
|
|
|
if (!riscv_feature(env, RISCV_FEATURE_MMU)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
if (riscv_cpu_mxl(env) == MXL_RV32) {
|
|
vm = validate_vm(env, get_field(val, SATP32_MODE));
|
|
mask = (val ^ env->satp) & (SATP32_MODE | SATP32_ASID | SATP32_PPN);
|
|
asid = (val ^ env->satp) & SATP32_ASID;
|
|
} else {
|
|
vm = validate_vm(env, get_field(val, SATP64_MODE));
|
|
mask = (val ^ env->satp) & (SATP64_MODE | SATP64_ASID | SATP64_PPN);
|
|
asid = (val ^ env->satp) & SATP64_ASID;
|
|
}
|
|
|
|
if (vm && mask) {
|
|
if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
} else {
|
|
if (asid) {
|
|
tlb_flush(env_cpu(env));
|
|
}
|
|
env->satp = val;
|
|
}
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Hypervisor Extensions */
|
|
static RISCVException read_hstatus(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->hstatus;
|
|
if (riscv_cpu_mxl(env) != MXL_RV32) {
|
|
/* We only support 64-bit VSXL */
|
|
*val = set_field(*val, HSTATUS_VSXL, 2);
|
|
}
|
|
/* We only support little endian */
|
|
*val = set_field(*val, HSTATUS_VSBE, 0);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hstatus(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->hstatus = val;
|
|
if (riscv_cpu_mxl(env) != MXL_RV32 && get_field(val, HSTATUS_VSXL) != 2) {
|
|
qemu_log_mask(LOG_UNIMP, "QEMU does not support mixed HSXLEN options.");
|
|
}
|
|
if (get_field(val, HSTATUS_VSBE) != 0) {
|
|
qemu_log_mask(LOG_UNIMP, "QEMU does not support big endian guests.");
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_hedeleg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->hedeleg;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hedeleg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->hedeleg = val & vs_delegable_excps;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_hideleg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->hideleg;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hideleg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->hideleg = val & vs_delegable_ints;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException rmw_hvip(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
int ret = rmw_mip(env, 0, ret_value, new_value,
|
|
write_mask & hvip_writable_mask);
|
|
|
|
if (ret_value) {
|
|
*ret_value &= hvip_writable_mask;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static RISCVException rmw_hip(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
int ret = rmw_mip(env, 0, ret_value, new_value,
|
|
write_mask & hip_writable_mask);
|
|
|
|
if (ret_value) {
|
|
*ret_value &= hip_writable_mask;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static RISCVException read_hie(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mie & VS_MODE_INTERRUPTS;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hie(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS);
|
|
return write_mie(env, CSR_MIE, newval);
|
|
}
|
|
|
|
static RISCVException read_hcounteren(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->hcounteren;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hcounteren(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->hcounteren = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hgeie(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
if (val) {
|
|
qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN.");
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_htval(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->htval;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_htval(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->htval = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_htinst(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->htinst;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_htinst(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hgeip(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
if (val) {
|
|
qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN.");
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_hgatp(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->hgatp;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_hgatp(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->hgatp = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_htimedelta(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
if (!env->rdtime_fn) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
*val = env->htimedelta;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_htimedelta(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
if (!env->rdtime_fn) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
if (riscv_cpu_mxl(env) == MXL_RV32) {
|
|
env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val);
|
|
} else {
|
|
env->htimedelta = val;
|
|
}
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_htimedeltah(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
if (!env->rdtime_fn) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
*val = env->htimedelta >> 32;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_htimedeltah(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
if (!env->rdtime_fn) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
env->htimedelta = deposit64(env->htimedelta, 32, 32, (uint64_t)val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Virtual CSR Registers */
|
|
static RISCVException read_vsstatus(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vsstatus;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vsstatus(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mask = (target_ulong)-1;
|
|
env->vsstatus = (env->vsstatus & ~mask) | (uint64_t)val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static int read_vstvec(CPURISCVState *env, int csrno, target_ulong *val)
|
|
{
|
|
*val = env->vstvec;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vstvec(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vstvec = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_vsscratch(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vsscratch;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vsscratch(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vsscratch = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_vsepc(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vsepc;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vsepc(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vsepc = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_vscause(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vscause;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vscause(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vscause = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_vstval(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vstval;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vstval(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vstval = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_vsatp(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->vsatp;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_vsatp(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->vsatp = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mtval2(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mtval2;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mtval2(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mtval2 = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mtinst(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mtinst;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mtinst(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
env->mtinst = val;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/* Physical Memory Protection */
|
|
static RISCVException read_mseccfg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = mseccfg_csr_read(env);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mseccfg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
mseccfg_csr_write(env, val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static bool check_pmp_reg_index(CPURISCVState *env, uint32_t reg_index)
|
|
{
|
|
/* TODO: RV128 restriction check */
|
|
if ((reg_index & 1) && (riscv_cpu_mxl(env) == MXL_RV64)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static RISCVException read_pmpcfg(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
uint32_t reg_index = csrno - CSR_PMPCFG0;
|
|
|
|
if (!check_pmp_reg_index(env, reg_index)) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
*val = pmpcfg_csr_read(env, csrno - CSR_PMPCFG0);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_pmpcfg(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint32_t reg_index = csrno - CSR_PMPCFG0;
|
|
|
|
if (!check_pmp_reg_index(env, reg_index)) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
pmpcfg_csr_write(env, csrno - CSR_PMPCFG0, val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_pmpaddr(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = pmpaddr_csr_read(env, csrno - CSR_PMPADDR0);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_pmpaddr(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
pmpaddr_csr_write(env, csrno - CSR_PMPADDR0, val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
/*
|
|
* Functions to access Pointer Masking feature registers
|
|
* We have to check if current priv lvl could modify
|
|
* csr in given mode
|
|
*/
|
|
static bool check_pm_current_disabled(CPURISCVState *env, int csrno)
|
|
{
|
|
int csr_priv = get_field(csrno, 0x300);
|
|
int pm_current;
|
|
|
|
/*
|
|
* If priv lvls differ that means we're accessing csr from higher priv lvl,
|
|
* so allow the access
|
|
*/
|
|
if (env->priv != csr_priv) {
|
|
return false;
|
|
}
|
|
switch (env->priv) {
|
|
case PRV_M:
|
|
pm_current = get_field(env->mmte, M_PM_CURRENT);
|
|
break;
|
|
case PRV_S:
|
|
pm_current = get_field(env->mmte, S_PM_CURRENT);
|
|
break;
|
|
case PRV_U:
|
|
pm_current = get_field(env->mmte, U_PM_CURRENT);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
/* It's same priv lvl, so we allow to modify csr only if pm.current==1 */
|
|
return !pm_current;
|
|
}
|
|
|
|
static RISCVException read_mmte(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mmte & MMTE_MASK;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mmte(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
target_ulong wpri_val = val & MMTE_MASK;
|
|
|
|
if (val != wpri_val) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n",
|
|
"MMTE: WPRI violation written 0x", val,
|
|
"vs expected 0x", wpri_val);
|
|
}
|
|
/* for machine mode pm.current is hardwired to 1 */
|
|
wpri_val |= MMTE_M_PM_CURRENT;
|
|
|
|
/* hardwiring pm.instruction bit to 0, since it's not supported yet */
|
|
wpri_val &= ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN);
|
|
env->mmte = wpri_val | PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_smte(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mmte & SMTE_MASK;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_smte(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
target_ulong wpri_val = val & SMTE_MASK;
|
|
|
|
if (val != wpri_val) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n",
|
|
"SMTE: WPRI violation written 0x", val,
|
|
"vs expected 0x", wpri_val);
|
|
}
|
|
|
|
/* if pm.current==0 we can't modify current PM CSRs */
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
wpri_val |= (env->mmte & ~SMTE_MASK);
|
|
write_mmte(env, csrno, wpri_val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_umte(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mmte & UMTE_MASK;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_umte(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
target_ulong wpri_val = val & UMTE_MASK;
|
|
|
|
if (val != wpri_val) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n",
|
|
"UMTE: WPRI violation written 0x", val,
|
|
"vs expected 0x", wpri_val);
|
|
}
|
|
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
wpri_val |= (env->mmte & ~UMTE_MASK);
|
|
write_mmte(env, csrno, wpri_val);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mpmmask(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mpmmask;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mpmmask(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
env->mpmmask = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_spmmask(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->spmmask;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_spmmask(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
/* if pm.current==0 we can't modify current PM CSRs */
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
env->spmmask = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_upmmask(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->upmmask;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_upmmask(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
/* if pm.current==0 we can't modify current PM CSRs */
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
env->upmmask = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_mpmbase(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->mpmbase;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_mpmbase(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
env->mpmbase = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_spmbase(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->spmbase;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_spmbase(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
/* if pm.current==0 we can't modify current PM CSRs */
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
env->spmbase = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException read_upmbase(CPURISCVState *env, int csrno,
|
|
target_ulong *val)
|
|
{
|
|
*val = env->upmbase;
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
static RISCVException write_upmbase(CPURISCVState *env, int csrno,
|
|
target_ulong val)
|
|
{
|
|
uint64_t mstatus;
|
|
|
|
/* if pm.current==0 we can't modify current PM CSRs */
|
|
if (check_pm_current_disabled(env, csrno)) {
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
env->upmbase = val;
|
|
env->mmte |= PM_EXT_DIRTY;
|
|
|
|
/* Set XS and SD bits, since PM CSRs are dirty */
|
|
mstatus = env->mstatus | MSTATUS_XS;
|
|
write_mstatus(env, csrno, mstatus);
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* riscv_csrrw - read and/or update control and status register
|
|
*
|
|
* csrr <-> riscv_csrrw(env, csrno, ret_value, 0, 0);
|
|
* csrrw <-> riscv_csrrw(env, csrno, ret_value, value, -1);
|
|
* csrrs <-> riscv_csrrw(env, csrno, ret_value, -1, value);
|
|
* csrrc <-> riscv_csrrw(env, csrno, ret_value, 0, value);
|
|
*/
|
|
|
|
static inline RISCVException riscv_csrrw_check(CPURISCVState *env,
|
|
int csrno,
|
|
bool write_mask,
|
|
RISCVCPU *cpu)
|
|
{
|
|
/* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */
|
|
int read_only = get_field(csrno, 0xC00) == 3;
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
int effective_priv = env->priv;
|
|
|
|
if (riscv_has_ext(env, RVH) &&
|
|
env->priv == PRV_S &&
|
|
!riscv_cpu_virt_enabled(env)) {
|
|
/*
|
|
* We are in S mode without virtualisation, therefore we are in HS Mode.
|
|
* Add 1 to the effective privledge level to allow us to access the
|
|
* Hypervisor CSRs.
|
|
*/
|
|
effective_priv++;
|
|
}
|
|
|
|
if (!env->debugger && (effective_priv < get_field(csrno, 0x300))) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
#endif
|
|
if (write_mask && read_only) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
/* ensure the CSR extension is enabled. */
|
|
if (!cpu->cfg.ext_icsr) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
/* check predicate */
|
|
if (!csr_ops[csrno].predicate) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
|
|
return csr_ops[csrno].predicate(env, csrno);
|
|
}
|
|
|
|
static RISCVException riscv_csrrw_do64(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value,
|
|
target_ulong write_mask)
|
|
{
|
|
RISCVException ret;
|
|
target_ulong old_value;
|
|
|
|
/* execute combined read/write operation if it exists */
|
|
if (csr_ops[csrno].op) {
|
|
return csr_ops[csrno].op(env, csrno, ret_value, new_value, write_mask);
|
|
}
|
|
|
|
/* if no accessor exists then return failure */
|
|
if (!csr_ops[csrno].read) {
|
|
return RISCV_EXCP_ILLEGAL_INST;
|
|
}
|
|
/* read old value */
|
|
ret = csr_ops[csrno].read(env, csrno, &old_value);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
|
|
/* write value if writable and write mask set, otherwise drop writes */
|
|
if (write_mask) {
|
|
new_value = (old_value & ~write_mask) | (new_value & write_mask);
|
|
if (csr_ops[csrno].write) {
|
|
ret = csr_ops[csrno].write(env, csrno, new_value);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* return old value */
|
|
if (ret_value) {
|
|
*ret_value = old_value;
|
|
}
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
RISCVException riscv_csrrw(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value, target_ulong write_mask)
|
|
{
|
|
RISCVCPU *cpu = env_archcpu(env);
|
|
|
|
RISCVException ret = riscv_csrrw_check(env, csrno, write_mask, cpu);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
|
|
return riscv_csrrw_do64(env, csrno, ret_value, new_value, write_mask);
|
|
}
|
|
|
|
static RISCVException riscv_csrrw_do128(CPURISCVState *env, int csrno,
|
|
Int128 *ret_value,
|
|
Int128 new_value,
|
|
Int128 write_mask)
|
|
{
|
|
RISCVException ret;
|
|
Int128 old_value;
|
|
|
|
/* read old value */
|
|
ret = csr_ops[csrno].read128(env, csrno, &old_value);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
|
|
/* write value if writable and write mask set, otherwise drop writes */
|
|
if (int128_nz(write_mask)) {
|
|
new_value = int128_or(int128_and(old_value, int128_not(write_mask)),
|
|
int128_and(new_value, write_mask));
|
|
if (csr_ops[csrno].write128) {
|
|
ret = csr_ops[csrno].write128(env, csrno, new_value);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
} else if (csr_ops[csrno].write) {
|
|
/* avoids having to write wrappers for all registers */
|
|
ret = csr_ops[csrno].write(env, csrno, int128_getlo(new_value));
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* return old value */
|
|
if (ret_value) {
|
|
*ret_value = old_value;
|
|
}
|
|
|
|
return RISCV_EXCP_NONE;
|
|
}
|
|
|
|
RISCVException riscv_csrrw_i128(CPURISCVState *env, int csrno,
|
|
Int128 *ret_value,
|
|
Int128 new_value, Int128 write_mask)
|
|
{
|
|
RISCVException ret;
|
|
RISCVCPU *cpu = env_archcpu(env);
|
|
|
|
ret = riscv_csrrw_check(env, csrno, int128_nz(write_mask), cpu);
|
|
if (ret != RISCV_EXCP_NONE) {
|
|
return ret;
|
|
}
|
|
|
|
if (csr_ops[csrno].read128) {
|
|
return riscv_csrrw_do128(env, csrno, ret_value, new_value, write_mask);
|
|
}
|
|
|
|
/*
|
|
* Fall back to 64-bit version for now, if the 128-bit alternative isn't
|
|
* at all defined.
|
|
* Note, some CSRs don't need to extend to MXLEN (64 upper bits non
|
|
* significant), for those, this fallback is correctly handling the accesses
|
|
*/
|
|
target_ulong old_value;
|
|
ret = riscv_csrrw_do64(env, csrno, &old_value,
|
|
int128_getlo(new_value),
|
|
int128_getlo(write_mask));
|
|
if (ret == RISCV_EXCP_NONE && ret_value) {
|
|
*ret_value = int128_make64(old_value);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Debugger support. If not in user mode, set env->debugger before the
|
|
* riscv_csrrw call and clear it after the call.
|
|
*/
|
|
RISCVException riscv_csrrw_debug(CPURISCVState *env, int csrno,
|
|
target_ulong *ret_value,
|
|
target_ulong new_value,
|
|
target_ulong write_mask)
|
|
{
|
|
RISCVException ret;
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
env->debugger = true;
|
|
#endif
|
|
ret = riscv_csrrw(env, csrno, ret_value, new_value, write_mask);
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
env->debugger = false;
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/* Control and Status Register function table */
|
|
riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
|
|
/* User Floating-Point CSRs */
|
|
[CSR_FFLAGS] = { "fflags", fs, read_fflags, write_fflags },
|
|
[CSR_FRM] = { "frm", fs, read_frm, write_frm },
|
|
[CSR_FCSR] = { "fcsr", fs, read_fcsr, write_fcsr },
|
|
/* Vector CSRs */
|
|
[CSR_VSTART] = { "vstart", vs, read_vstart, write_vstart },
|
|
[CSR_VXSAT] = { "vxsat", vs, read_vxsat, write_vxsat },
|
|
[CSR_VXRM] = { "vxrm", vs, read_vxrm, write_vxrm },
|
|
[CSR_VCSR] = { "vcsr", vs, read_vcsr, write_vcsr },
|
|
[CSR_VL] = { "vl", vs, read_vl },
|
|
[CSR_VTYPE] = { "vtype", vs, read_vtype },
|
|
[CSR_VLENB] = { "vlenb", vs, read_vlenb },
|
|
/* User Timers and Counters */
|
|
[CSR_CYCLE] = { "cycle", ctr, read_instret },
|
|
[CSR_INSTRET] = { "instret", ctr, read_instret },
|
|
[CSR_CYCLEH] = { "cycleh", ctr32, read_instreth },
|
|
[CSR_INSTRETH] = { "instreth", ctr32, read_instreth },
|
|
|
|
/*
|
|
* In privileged mode, the monitor will have to emulate TIME CSRs only if
|
|
* rdtime callback is not provided by machine/platform emulation.
|
|
*/
|
|
[CSR_TIME] = { "time", ctr, read_time },
|
|
[CSR_TIMEH] = { "timeh", ctr32, read_timeh },
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
/* Machine Timers and Counters */
|
|
[CSR_MCYCLE] = { "mcycle", any, read_instret },
|
|
[CSR_MINSTRET] = { "minstret", any, read_instret },
|
|
[CSR_MCYCLEH] = { "mcycleh", any32, read_instreth },
|
|
[CSR_MINSTRETH] = { "minstreth", any32, read_instreth },
|
|
|
|
/* Machine Information Registers */
|
|
[CSR_MVENDORID] = { "mvendorid", any, read_zero },
|
|
[CSR_MARCHID] = { "marchid", any, read_zero },
|
|
[CSR_MIMPID] = { "mimpid", any, read_zero },
|
|
[CSR_MHARTID] = { "mhartid", any, read_mhartid },
|
|
|
|
/* Machine Trap Setup */
|
|
[CSR_MSTATUS] = { "mstatus", any, read_mstatus, write_mstatus, NULL,
|
|
read_mstatus_i128 },
|
|
[CSR_MISA] = { "misa", any, read_misa, write_misa, NULL,
|
|
read_misa_i128 },
|
|
[CSR_MIDELEG] = { "mideleg", any, read_mideleg, write_mideleg },
|
|
[CSR_MEDELEG] = { "medeleg", any, read_medeleg, write_medeleg },
|
|
[CSR_MIE] = { "mie", any, read_mie, write_mie },
|
|
[CSR_MTVEC] = { "mtvec", any, read_mtvec, write_mtvec },
|
|
[CSR_MCOUNTEREN] = { "mcounteren", any, read_mcounteren, write_mcounteren },
|
|
|
|
[CSR_MSTATUSH] = { "mstatush", any32, read_mstatush, write_mstatush },
|
|
|
|
/* Machine Trap Handling */
|
|
[CSR_MSCRATCH] = { "mscratch", any, read_mscratch, write_mscratch, NULL,
|
|
read_mscratch_i128, write_mscratch_i128 },
|
|
[CSR_MEPC] = { "mepc", any, read_mepc, write_mepc },
|
|
[CSR_MCAUSE] = { "mcause", any, read_mcause, write_mcause },
|
|
[CSR_MTVAL] = { "mtval", any, read_mtval, write_mtval },
|
|
[CSR_MIP] = { "mip", any, NULL, NULL, rmw_mip },
|
|
|
|
/* Supervisor Trap Setup */
|
|
[CSR_SSTATUS] = { "sstatus", smode, read_sstatus, write_sstatus, NULL,
|
|
read_sstatus_i128 },
|
|
[CSR_SIE] = { "sie", smode, read_sie, write_sie },
|
|
[CSR_STVEC] = { "stvec", smode, read_stvec, write_stvec },
|
|
[CSR_SCOUNTEREN] = { "scounteren", smode, read_scounteren, write_scounteren },
|
|
|
|
/* Supervisor Trap Handling */
|
|
[CSR_SSCRATCH] = { "sscratch", smode, read_sscratch, write_sscratch, NULL,
|
|
read_sscratch_i128, write_sscratch_i128 },
|
|
[CSR_SEPC] = { "sepc", smode, read_sepc, write_sepc },
|
|
[CSR_SCAUSE] = { "scause", smode, read_scause, write_scause },
|
|
[CSR_STVAL] = { "stval", smode, read_stval, write_stval },
|
|
[CSR_SIP] = { "sip", smode, NULL, NULL, rmw_sip },
|
|
|
|
/* Supervisor Protection and Translation */
|
|
[CSR_SATP] = { "satp", smode, read_satp, write_satp },
|
|
|
|
[CSR_HSTATUS] = { "hstatus", hmode, read_hstatus, write_hstatus },
|
|
[CSR_HEDELEG] = { "hedeleg", hmode, read_hedeleg, write_hedeleg },
|
|
[CSR_HIDELEG] = { "hideleg", hmode, read_hideleg, write_hideleg },
|
|
[CSR_HVIP] = { "hvip", hmode, NULL, NULL, rmw_hvip },
|
|
[CSR_HIP] = { "hip", hmode, NULL, NULL, rmw_hip },
|
|
[CSR_HIE] = { "hie", hmode, read_hie, write_hie },
|
|
[CSR_HCOUNTEREN] = { "hcounteren", hmode, read_hcounteren, write_hcounteren },
|
|
[CSR_HGEIE] = { "hgeie", hmode, read_zero, write_hgeie },
|
|
[CSR_HTVAL] = { "htval", hmode, read_htval, write_htval },
|
|
[CSR_HTINST] = { "htinst", hmode, read_htinst, write_htinst },
|
|
[CSR_HGEIP] = { "hgeip", hmode, read_zero, write_hgeip },
|
|
[CSR_HGATP] = { "hgatp", hmode, read_hgatp, write_hgatp },
|
|
[CSR_HTIMEDELTA] = { "htimedelta", hmode, read_htimedelta, write_htimedelta },
|
|
[CSR_HTIMEDELTAH] = { "htimedeltah", hmode32, read_htimedeltah, write_htimedeltah },
|
|
|
|
[CSR_VSSTATUS] = { "vsstatus", hmode, read_vsstatus, write_vsstatus },
|
|
[CSR_VSIP] = { "vsip", hmode, NULL, NULL, rmw_vsip },
|
|
[CSR_VSIE] = { "vsie", hmode, read_vsie, write_vsie },
|
|
[CSR_VSTVEC] = { "vstvec", hmode, read_vstvec, write_vstvec },
|
|
[CSR_VSSCRATCH] = { "vsscratch", hmode, read_vsscratch, write_vsscratch },
|
|
[CSR_VSEPC] = { "vsepc", hmode, read_vsepc, write_vsepc },
|
|
[CSR_VSCAUSE] = { "vscause", hmode, read_vscause, write_vscause },
|
|
[CSR_VSTVAL] = { "vstval", hmode, read_vstval, write_vstval },
|
|
[CSR_VSATP] = { "vsatp", hmode, read_vsatp, write_vsatp },
|
|
|
|
[CSR_MTVAL2] = { "mtval2", hmode, read_mtval2, write_mtval2 },
|
|
[CSR_MTINST] = { "mtinst", hmode, read_mtinst, write_mtinst },
|
|
|
|
/* Physical Memory Protection */
|
|
[CSR_MSECCFG] = { "mseccfg", epmp, read_mseccfg, write_mseccfg },
|
|
[CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg },
|
|
[CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg },
|
|
[CSR_PMPCFG2] = { "pmpcfg2", pmp, read_pmpcfg, write_pmpcfg },
|
|
[CSR_PMPCFG3] = { "pmpcfg3", pmp, read_pmpcfg, write_pmpcfg },
|
|
[CSR_PMPADDR0] = { "pmpaddr0", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR1] = { "pmpaddr1", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR2] = { "pmpaddr2", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR3] = { "pmpaddr3", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR4] = { "pmpaddr4", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR5] = { "pmpaddr5", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR6] = { "pmpaddr6", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR7] = { "pmpaddr7", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR8] = { "pmpaddr8", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR9] = { "pmpaddr9", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR10] = { "pmpaddr10", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR11] = { "pmpaddr11", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR12] = { "pmpaddr12", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR13] = { "pmpaddr13", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR14] = { "pmpaddr14", pmp, read_pmpaddr, write_pmpaddr },
|
|
[CSR_PMPADDR15] = { "pmpaddr15", pmp, read_pmpaddr, write_pmpaddr },
|
|
|
|
/* User Pointer Masking */
|
|
[CSR_UMTE] = { "umte", pointer_masking, read_umte, write_umte },
|
|
[CSR_UPMMASK] = { "upmmask", pointer_masking, read_upmmask, write_upmmask },
|
|
[CSR_UPMBASE] = { "upmbase", pointer_masking, read_upmbase, write_upmbase },
|
|
/* Machine Pointer Masking */
|
|
[CSR_MMTE] = { "mmte", pointer_masking, read_mmte, write_mmte },
|
|
[CSR_MPMMASK] = { "mpmmask", pointer_masking, read_mpmmask, write_mpmmask },
|
|
[CSR_MPMBASE] = { "mpmbase", pointer_masking, read_mpmbase, write_mpmbase },
|
|
/* Supervisor Pointer Masking */
|
|
[CSR_SMTE] = { "smte", pointer_masking, read_smte, write_smte },
|
|
[CSR_SPMMASK] = { "spmmask", pointer_masking, read_spmmask, write_spmmask },
|
|
[CSR_SPMBASE] = { "spmbase", pointer_masking, read_spmbase, write_spmbase },
|
|
|
|
/* Performance Counters */
|
|
[CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_zero },
|
|
[CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_zero },
|
|
[CSR_HPMCOUNTER5] = { "hpmcounter5", ctr, read_zero },
|
|
[CSR_HPMCOUNTER6] = { "hpmcounter6", ctr, read_zero },
|
|
[CSR_HPMCOUNTER7] = { "hpmcounter7", ctr, read_zero },
|
|
[CSR_HPMCOUNTER8] = { "hpmcounter8", ctr, read_zero },
|
|
[CSR_HPMCOUNTER9] = { "hpmcounter9", ctr, read_zero },
|
|
[CSR_HPMCOUNTER10] = { "hpmcounter10", ctr, read_zero },
|
|
[CSR_HPMCOUNTER11] = { "hpmcounter11", ctr, read_zero },
|
|
[CSR_HPMCOUNTER12] = { "hpmcounter12", ctr, read_zero },
|
|
[CSR_HPMCOUNTER13] = { "hpmcounter13", ctr, read_zero },
|
|
[CSR_HPMCOUNTER14] = { "hpmcounter14", ctr, read_zero },
|
|
[CSR_HPMCOUNTER15] = { "hpmcounter15", ctr, read_zero },
|
|
[CSR_HPMCOUNTER16] = { "hpmcounter16", ctr, read_zero },
|
|
[CSR_HPMCOUNTER17] = { "hpmcounter17", ctr, read_zero },
|
|
[CSR_HPMCOUNTER18] = { "hpmcounter18", ctr, read_zero },
|
|
[CSR_HPMCOUNTER19] = { "hpmcounter19", ctr, read_zero },
|
|
[CSR_HPMCOUNTER20] = { "hpmcounter20", ctr, read_zero },
|
|
[CSR_HPMCOUNTER21] = { "hpmcounter21", ctr, read_zero },
|
|
[CSR_HPMCOUNTER22] = { "hpmcounter22", ctr, read_zero },
|
|
[CSR_HPMCOUNTER23] = { "hpmcounter23", ctr, read_zero },
|
|
[CSR_HPMCOUNTER24] = { "hpmcounter24", ctr, read_zero },
|
|
[CSR_HPMCOUNTER25] = { "hpmcounter25", ctr, read_zero },
|
|
[CSR_HPMCOUNTER26] = { "hpmcounter26", ctr, read_zero },
|
|
[CSR_HPMCOUNTER27] = { "hpmcounter27", ctr, read_zero },
|
|
[CSR_HPMCOUNTER28] = { "hpmcounter28", ctr, read_zero },
|
|
[CSR_HPMCOUNTER29] = { "hpmcounter29", ctr, read_zero },
|
|
[CSR_HPMCOUNTER30] = { "hpmcounter30", ctr, read_zero },
|
|
[CSR_HPMCOUNTER31] = { "hpmcounter31", ctr, read_zero },
|
|
|
|
[CSR_MHPMCOUNTER3] = { "mhpmcounter3", any, read_zero },
|
|
[CSR_MHPMCOUNTER4] = { "mhpmcounter4", any, read_zero },
|
|
[CSR_MHPMCOUNTER5] = { "mhpmcounter5", any, read_zero },
|
|
[CSR_MHPMCOUNTER6] = { "mhpmcounter6", any, read_zero },
|
|
[CSR_MHPMCOUNTER7] = { "mhpmcounter7", any, read_zero },
|
|
[CSR_MHPMCOUNTER8] = { "mhpmcounter8", any, read_zero },
|
|
[CSR_MHPMCOUNTER9] = { "mhpmcounter9", any, read_zero },
|
|
[CSR_MHPMCOUNTER10] = { "mhpmcounter10", any, read_zero },
|
|
[CSR_MHPMCOUNTER11] = { "mhpmcounter11", any, read_zero },
|
|
[CSR_MHPMCOUNTER12] = { "mhpmcounter12", any, read_zero },
|
|
[CSR_MHPMCOUNTER13] = { "mhpmcounter13", any, read_zero },
|
|
[CSR_MHPMCOUNTER14] = { "mhpmcounter14", any, read_zero },
|
|
[CSR_MHPMCOUNTER15] = { "mhpmcounter15", any, read_zero },
|
|
[CSR_MHPMCOUNTER16] = { "mhpmcounter16", any, read_zero },
|
|
[CSR_MHPMCOUNTER17] = { "mhpmcounter17", any, read_zero },
|
|
[CSR_MHPMCOUNTER18] = { "mhpmcounter18", any, read_zero },
|
|
[CSR_MHPMCOUNTER19] = { "mhpmcounter19", any, read_zero },
|
|
[CSR_MHPMCOUNTER20] = { "mhpmcounter20", any, read_zero },
|
|
[CSR_MHPMCOUNTER21] = { "mhpmcounter21", any, read_zero },
|
|
[CSR_MHPMCOUNTER22] = { "mhpmcounter22", any, read_zero },
|
|
[CSR_MHPMCOUNTER23] = { "mhpmcounter23", any, read_zero },
|
|
[CSR_MHPMCOUNTER24] = { "mhpmcounter24", any, read_zero },
|
|
[CSR_MHPMCOUNTER25] = { "mhpmcounter25", any, read_zero },
|
|
[CSR_MHPMCOUNTER26] = { "mhpmcounter26", any, read_zero },
|
|
[CSR_MHPMCOUNTER27] = { "mhpmcounter27", any, read_zero },
|
|
[CSR_MHPMCOUNTER28] = { "mhpmcounter28", any, read_zero },
|
|
[CSR_MHPMCOUNTER29] = { "mhpmcounter29", any, read_zero },
|
|
[CSR_MHPMCOUNTER30] = { "mhpmcounter30", any, read_zero },
|
|
[CSR_MHPMCOUNTER31] = { "mhpmcounter31", any, read_zero },
|
|
|
|
[CSR_MHPMEVENT3] = { "mhpmevent3", any, read_zero },
|
|
[CSR_MHPMEVENT4] = { "mhpmevent4", any, read_zero },
|
|
[CSR_MHPMEVENT5] = { "mhpmevent5", any, read_zero },
|
|
[CSR_MHPMEVENT6] = { "mhpmevent6", any, read_zero },
|
|
[CSR_MHPMEVENT7] = { "mhpmevent7", any, read_zero },
|
|
[CSR_MHPMEVENT8] = { "mhpmevent8", any, read_zero },
|
|
[CSR_MHPMEVENT9] = { "mhpmevent9", any, read_zero },
|
|
[CSR_MHPMEVENT10] = { "mhpmevent10", any, read_zero },
|
|
[CSR_MHPMEVENT11] = { "mhpmevent11", any, read_zero },
|
|
[CSR_MHPMEVENT12] = { "mhpmevent12", any, read_zero },
|
|
[CSR_MHPMEVENT13] = { "mhpmevent13", any, read_zero },
|
|
[CSR_MHPMEVENT14] = { "mhpmevent14", any, read_zero },
|
|
[CSR_MHPMEVENT15] = { "mhpmevent15", any, read_zero },
|
|
[CSR_MHPMEVENT16] = { "mhpmevent16", any, read_zero },
|
|
[CSR_MHPMEVENT17] = { "mhpmevent17", any, read_zero },
|
|
[CSR_MHPMEVENT18] = { "mhpmevent18", any, read_zero },
|
|
[CSR_MHPMEVENT19] = { "mhpmevent19", any, read_zero },
|
|
[CSR_MHPMEVENT20] = { "mhpmevent20", any, read_zero },
|
|
[CSR_MHPMEVENT21] = { "mhpmevent21", any, read_zero },
|
|
[CSR_MHPMEVENT22] = { "mhpmevent22", any, read_zero },
|
|
[CSR_MHPMEVENT23] = { "mhpmevent23", any, read_zero },
|
|
[CSR_MHPMEVENT24] = { "mhpmevent24", any, read_zero },
|
|
[CSR_MHPMEVENT25] = { "mhpmevent25", any, read_zero },
|
|
[CSR_MHPMEVENT26] = { "mhpmevent26", any, read_zero },
|
|
[CSR_MHPMEVENT27] = { "mhpmevent27", any, read_zero },
|
|
[CSR_MHPMEVENT28] = { "mhpmevent28", any, read_zero },
|
|
[CSR_MHPMEVENT29] = { "mhpmevent29", any, read_zero },
|
|
[CSR_MHPMEVENT30] = { "mhpmevent30", any, read_zero },
|
|
[CSR_MHPMEVENT31] = { "mhpmevent31", any, read_zero },
|
|
|
|
[CSR_HPMCOUNTER3H] = { "hpmcounter3h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER4H] = { "hpmcounter4h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER5H] = { "hpmcounter5h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER6H] = { "hpmcounter6h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER7H] = { "hpmcounter7h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER8H] = { "hpmcounter8h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER9H] = { "hpmcounter9h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER10H] = { "hpmcounter10h", ctr32, read_zero },
|
|
[CSR_HPMCOUNTER11H] = { "hpmcounter11h", ctr32, read_zero },
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[CSR_HPMCOUNTER12H] = { "hpmcounter12h", ctr32, read_zero },
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[CSR_HPMCOUNTER13H] = { "hpmcounter13h", ctr32, read_zero },
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[CSR_HPMCOUNTER14H] = { "hpmcounter14h", ctr32, read_zero },
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[CSR_HPMCOUNTER15H] = { "hpmcounter15h", ctr32, read_zero },
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[CSR_HPMCOUNTER16H] = { "hpmcounter16h", ctr32, read_zero },
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[CSR_HPMCOUNTER17H] = { "hpmcounter17h", ctr32, read_zero },
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[CSR_HPMCOUNTER18H] = { "hpmcounter18h", ctr32, read_zero },
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[CSR_HPMCOUNTER19H] = { "hpmcounter19h", ctr32, read_zero },
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[CSR_HPMCOUNTER20H] = { "hpmcounter20h", ctr32, read_zero },
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[CSR_HPMCOUNTER21H] = { "hpmcounter21h", ctr32, read_zero },
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[CSR_HPMCOUNTER22H] = { "hpmcounter22h", ctr32, read_zero },
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[CSR_HPMCOUNTER23H] = { "hpmcounter23h", ctr32, read_zero },
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[CSR_HPMCOUNTER24H] = { "hpmcounter24h", ctr32, read_zero },
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[CSR_HPMCOUNTER25H] = { "hpmcounter25h", ctr32, read_zero },
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[CSR_HPMCOUNTER26H] = { "hpmcounter26h", ctr32, read_zero },
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[CSR_HPMCOUNTER27H] = { "hpmcounter27h", ctr32, read_zero },
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[CSR_HPMCOUNTER28H] = { "hpmcounter28h", ctr32, read_zero },
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[CSR_HPMCOUNTER29H] = { "hpmcounter29h", ctr32, read_zero },
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[CSR_HPMCOUNTER30H] = { "hpmcounter30h", ctr32, read_zero },
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[CSR_HPMCOUNTER31H] = { "hpmcounter31h", ctr32, read_zero },
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[CSR_MHPMCOUNTER3H] = { "mhpmcounter3h", any32, read_zero },
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[CSR_MHPMCOUNTER4H] = { "mhpmcounter4h", any32, read_zero },
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[CSR_MHPMCOUNTER5H] = { "mhpmcounter5h", any32, read_zero },
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[CSR_MHPMCOUNTER6H] = { "mhpmcounter6h", any32, read_zero },
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[CSR_MHPMCOUNTER7H] = { "mhpmcounter7h", any32, read_zero },
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[CSR_MHPMCOUNTER8H] = { "mhpmcounter8h", any32, read_zero },
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[CSR_MHPMCOUNTER9H] = { "mhpmcounter9h", any32, read_zero },
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[CSR_MHPMCOUNTER10H] = { "mhpmcounter10h", any32, read_zero },
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[CSR_MHPMCOUNTER11H] = { "mhpmcounter11h", any32, read_zero },
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[CSR_MHPMCOUNTER12H] = { "mhpmcounter12h", any32, read_zero },
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[CSR_MHPMCOUNTER13H] = { "mhpmcounter13h", any32, read_zero },
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[CSR_MHPMCOUNTER14H] = { "mhpmcounter14h", any32, read_zero },
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[CSR_MHPMCOUNTER15H] = { "mhpmcounter15h", any32, read_zero },
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[CSR_MHPMCOUNTER16H] = { "mhpmcounter16h", any32, read_zero },
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[CSR_MHPMCOUNTER17H] = { "mhpmcounter17h", any32, read_zero },
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[CSR_MHPMCOUNTER18H] = { "mhpmcounter18h", any32, read_zero },
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[CSR_MHPMCOUNTER19H] = { "mhpmcounter19h", any32, read_zero },
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[CSR_MHPMCOUNTER20H] = { "mhpmcounter20h", any32, read_zero },
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[CSR_MHPMCOUNTER21H] = { "mhpmcounter21h", any32, read_zero },
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[CSR_MHPMCOUNTER22H] = { "mhpmcounter22h", any32, read_zero },
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[CSR_MHPMCOUNTER23H] = { "mhpmcounter23h", any32, read_zero },
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[CSR_MHPMCOUNTER24H] = { "mhpmcounter24h", any32, read_zero },
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[CSR_MHPMCOUNTER25H] = { "mhpmcounter25h", any32, read_zero },
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[CSR_MHPMCOUNTER26H] = { "mhpmcounter26h", any32, read_zero },
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[CSR_MHPMCOUNTER27H] = { "mhpmcounter27h", any32, read_zero },
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[CSR_MHPMCOUNTER28H] = { "mhpmcounter28h", any32, read_zero },
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[CSR_MHPMCOUNTER29H] = { "mhpmcounter29h", any32, read_zero },
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[CSR_MHPMCOUNTER30H] = { "mhpmcounter30h", any32, read_zero },
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[CSR_MHPMCOUNTER31H] = { "mhpmcounter31h", any32, read_zero },
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#endif /* !CONFIG_USER_ONLY */
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};
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