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qemu/target/riscv/cpu.c
Alistair Francis 0f0b70eeec target/riscv: Expose interrupt pending bits as GPIO lines 
Expose the 12 interrupt pending bits in MIP as GPIO lines.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 069d6162f0bc2f4a4f5a44e73f6442b11c703c53.1630301632.git.alistair.francis@wdc.com
2021-09-21 07:56:49 +10:00

801 lines
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/*
* QEMU RISC-V CPU
*
* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
* Copyright (c) 2017-2018 SiFive, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/qemu-print.h"
#include "qemu/ctype.h"
#include "qemu/log.h"
#include "cpu.h"
#include "internals.h"
#include "exec/exec-all.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "fpu/softfloat-helpers.h"
/* RISC-V CPU definitions */
static const char riscv_exts[26] = "IEMAFDQCLBJTPVNSUHKORWXYZG";
const char * const riscv_int_regnames[] = {
"x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1",
"x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3",
"x14/a4", "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3", "x20/s4",
"x21/s5", "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11",
"x28/t3", "x29/t4", "x30/t5", "x31/t6"
};
const char * const riscv_fpr_regnames[] = {
"f0/ft0", "f1/ft1", "f2/ft2", "f3/ft3", "f4/ft4", "f5/ft5",
"f6/ft6", "f7/ft7", "f8/fs0", "f9/fs1", "f10/fa0", "f11/fa1",
"f12/fa2", "f13/fa3", "f14/fa4", "f15/fa5", "f16/fa6", "f17/fa7",
"f18/fs2", "f19/fs3", "f20/fs4", "f21/fs5", "f22/fs6", "f23/fs7",
"f24/fs8", "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9",
"f30/ft10", "f31/ft11"
};
static const char * const riscv_excp_names[] = {
"misaligned_fetch",
"fault_fetch",
"illegal_instruction",
"breakpoint",
"misaligned_load",
"fault_load",
"misaligned_store",
"fault_store",
"user_ecall",
"supervisor_ecall",
"hypervisor_ecall",
"machine_ecall",
"exec_page_fault",
"load_page_fault",
"reserved",
"store_page_fault",
"reserved",
"reserved",
"reserved",
"reserved",
"guest_exec_page_fault",
"guest_load_page_fault",
"reserved",
"guest_store_page_fault",
};
static const char * const riscv_intr_names[] = {
"u_software",
"s_software",
"vs_software",
"m_software",
"u_timer",
"s_timer",
"vs_timer",
"m_timer",
"u_external",
"s_external",
"vs_external",
"m_external",
"reserved",
"reserved",
"reserved",
"reserved"
};
const char *riscv_cpu_get_trap_name(target_ulong cause, bool async)
{
if (async) {
return (cause < ARRAY_SIZE(riscv_intr_names)) ?
riscv_intr_names[cause] : "(unknown)";
} else {
return (cause < ARRAY_SIZE(riscv_excp_names)) ?
riscv_excp_names[cause] : "(unknown)";
}
}
bool riscv_cpu_is_32bit(CPURISCVState *env)
{
if (env->misa & RV64) {
return false;
}
return true;
}
static void set_misa(CPURISCVState *env, target_ulong misa)
{
env->misa_mask = env->misa = misa;
}
static void set_priv_version(CPURISCVState *env, int priv_ver)
{
env->priv_ver = priv_ver;
}
static void set_bext_version(CPURISCVState *env, int bext_ver)
{
env->bext_ver = bext_ver;
}
static void set_vext_version(CPURISCVState *env, int vext_ver)
{
env->vext_ver = vext_ver;
}
static void set_feature(CPURISCVState *env, int feature)
{
env->features |= (1ULL << feature);
}
static void set_resetvec(CPURISCVState *env, target_ulong resetvec)
{
#ifndef CONFIG_USER_ONLY
env->resetvec = resetvec;
#endif
}
static void riscv_any_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
#if defined(TARGET_RISCV32)
set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVD | RVC | RVU);
#elif defined(TARGET_RISCV64)
set_misa(env, RV64 | RVI | RVM | RVA | RVF | RVD | RVC | RVU);
#endif
set_priv_version(env, PRIV_VERSION_1_11_0);
}
#if defined(TARGET_RISCV64)
static void rv64_base_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
/* We set this in the realise function */
set_misa(env, RV64);
}
static void rv64_sifive_u_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV64 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
}
static void rv64_sifive_e_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV64 | RVI | RVM | RVA | RVC | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
qdev_prop_set_bit(DEVICE(obj), "mmu", false);
}
#else
static void rv32_base_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
/* We set this in the realise function */
set_misa(env, RV32);
}
static void rv32_sifive_u_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
}
static void rv32_sifive_e_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV32 | RVI | RVM | RVA | RVC | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
qdev_prop_set_bit(DEVICE(obj), "mmu", false);
}
static void rv32_ibex_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV32 | RVI | RVM | RVC | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
qdev_prop_set_bit(DEVICE(obj), "mmu", false);
qdev_prop_set_bit(DEVICE(obj), "x-epmp", true);
}
static void rv32_imafcu_nommu_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
set_misa(env, RV32 | RVI | RVM | RVA | RVF | RVC | RVU);
set_priv_version(env, PRIV_VERSION_1_10_0);
set_resetvec(env, DEFAULT_RSTVEC);
qdev_prop_set_bit(DEVICE(obj), "mmu", false);
}
#endif
static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
char **cpuname;
cpuname = g_strsplit(cpu_model, ",", 1);
typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]);
oc = object_class_by_name(typename);
g_strfreev(cpuname);
g_free(typename);
if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
object_class_is_abstract(oc)) {
return NULL;
}
return oc;
}
static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
int i;
#if !defined(CONFIG_USER_ONLY)
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s %d\n", "V = ", riscv_cpu_virt_enabled(env));
}
#endif
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc ", env->pc);
#ifndef CONFIG_USER_ONLY
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mhartid ", env->mhartid);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatus ", (target_ulong)env->mstatus);
if (riscv_cpu_is_32bit(env)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatush ",
(target_ulong)(env->mstatus >> 32));
}
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hstatus ", env->hstatus);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsstatus ",
(target_ulong)env->vsstatus);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mip ", env->mip);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mie ", env->mie);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mideleg ", env->mideleg);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hideleg ", env->hideleg);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "medeleg ", env->medeleg);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "hedeleg ", env->hedeleg);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtvec ", env->mtvec);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stvec ", env->stvec);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vstvec ", env->vstvec);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mepc ", env->mepc);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "sepc ", env->sepc);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vsepc ", env->vsepc);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mcause ", env->mcause);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "scause ", env->scause);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "vscause ", env->vscause);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval ", env->mtval);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "stval ", env->stval);
if (riscv_has_ext(env, RVH)) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "htval ", env->htval);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval2 ", env->mtval2);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mscratch", env->mscratch);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "sscratch", env->sscratch);
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "satp ", env->satp);
#endif
for (i = 0; i < 32; i++) {
qemu_fprintf(f, " %s " TARGET_FMT_lx,
riscv_int_regnames[i], env->gpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
if (flags & CPU_DUMP_FPU) {
for (i = 0; i < 32; i++) {
qemu_fprintf(f, " %s %016" PRIx64,
riscv_fpr_regnames[i], env->fpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
}
}
static void riscv_cpu_set_pc(CPUState *cs, vaddr value)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
env->pc = value;
}
static void riscv_cpu_synchronize_from_tb(CPUState *cs,
const TranslationBlock *tb)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
env->pc = tb->pc;
}
static bool riscv_cpu_has_work(CPUState *cs)
{
#ifndef CONFIG_USER_ONLY
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
/*
* Definition of the WFI instruction requires it to ignore the privilege
* mode and delegation registers, but respect individual enables
*/
return (env->mip & env->mie) != 0;
#else
return true;
#endif
}
void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
target_ulong *data)
{
env->pc = data[0];
}
static void riscv_cpu_reset(DeviceState *dev)
{
CPUState *cs = CPU(dev);
RISCVCPU *cpu = RISCV_CPU(cs);
RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
CPURISCVState *env = &cpu->env;
mcc->parent_reset(dev);
#ifndef CONFIG_USER_ONLY
env->priv = PRV_M;
env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
env->mcause = 0;
env->pc = env->resetvec;
env->two_stage_lookup = false;
#endif
cs->exception_index = RISCV_EXCP_NONE;
env->load_res = -1;
set_default_nan_mode(1, &env->fp_status);
}
static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
{
RISCVCPU *cpu = RISCV_CPU(s);
if (riscv_cpu_is_32bit(&cpu->env)) {
info->print_insn = print_insn_riscv32;
} else {
info->print_insn = print_insn_riscv64;
}
}
static void riscv_cpu_realize(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
RISCVCPU *cpu = RISCV_CPU(dev);
CPURISCVState *env = &cpu->env;
RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
int priv_version = 0;
target_ulong target_misa = env->misa;
Error *local_err = NULL;
cpu_exec_realizefn(cs, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
if (cpu->cfg.priv_spec) {
if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
priv_version = PRIV_VERSION_1_11_0;
} else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
priv_version = PRIV_VERSION_1_10_0;
} else {
error_setg(errp,
"Unsupported privilege spec version '%s'",
cpu->cfg.priv_spec);
return;
}
}
if (priv_version) {
set_priv_version(env, priv_version);
} else if (!env->priv_ver) {
set_priv_version(env, PRIV_VERSION_1_11_0);
}
if (cpu->cfg.mmu) {
set_feature(env, RISCV_FEATURE_MMU);
}
if (cpu->cfg.pmp) {
set_feature(env, RISCV_FEATURE_PMP);
/*
* Enhanced PMP should only be available
* on harts with PMP support
*/
if (cpu->cfg.epmp) {
set_feature(env, RISCV_FEATURE_EPMP);
}
}
set_resetvec(env, cpu->cfg.resetvec);
/* If only XLEN is set for misa, then set misa from properties */
if (env->misa == RV32 || env->misa == RV64) {
/* Do some ISA extension error checking */
if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
error_setg(errp,
"I and E extensions are incompatible");
return;
}
if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
error_setg(errp,
"Either I or E extension must be set");
return;
}
if (cpu->cfg.ext_g && !(cpu->cfg.ext_i & cpu->cfg.ext_m &
cpu->cfg.ext_a & cpu->cfg.ext_f &
cpu->cfg.ext_d)) {
warn_report("Setting G will also set IMAFD");
cpu->cfg.ext_i = true;
cpu->cfg.ext_m = true;
cpu->cfg.ext_a = true;
cpu->cfg.ext_f = true;
cpu->cfg.ext_d = true;
}
/* Set the ISA extensions, checks should have happened above */
if (cpu->cfg.ext_i) {
target_misa |= RVI;
}
if (cpu->cfg.ext_e) {
target_misa |= RVE;
}
if (cpu->cfg.ext_m) {
target_misa |= RVM;
}
if (cpu->cfg.ext_a) {
target_misa |= RVA;
}
if (cpu->cfg.ext_f) {
target_misa |= RVF;
}
if (cpu->cfg.ext_d) {
target_misa |= RVD;
}
if (cpu->cfg.ext_c) {
target_misa |= RVC;
}
if (cpu->cfg.ext_s) {
target_misa |= RVS;
}
if (cpu->cfg.ext_u) {
target_misa |= RVU;
}
if (cpu->cfg.ext_h) {
target_misa |= RVH;
}
if (cpu->cfg.ext_b) {
int bext_version = BEXT_VERSION_0_93_0;
target_misa |= RVB;
if (cpu->cfg.bext_spec) {
if (!g_strcmp0(cpu->cfg.bext_spec, "v0.93")) {
bext_version = BEXT_VERSION_0_93_0;
} else {
error_setg(errp,
"Unsupported bitmanip spec version '%s'",
cpu->cfg.bext_spec);
return;
}
} else {
qemu_log("bitmanip version is not specified, "
"use the default value v0.93\n");
}
set_bext_version(env, bext_version);
}
if (cpu->cfg.ext_v) {
int vext_version = VEXT_VERSION_0_07_1;
target_misa |= RVV;
if (!is_power_of_2(cpu->cfg.vlen)) {
error_setg(errp,
"Vector extension VLEN must be power of 2");
return;
}
if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) {
error_setg(errp,
"Vector extension implementation only supports VLEN "
"in the range [128, %d]", RV_VLEN_MAX);
return;
}
if (!is_power_of_2(cpu->cfg.elen)) {
error_setg(errp,
"Vector extension ELEN must be power of 2");
return;
}
if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) {
error_setg(errp,
"Vector extension implementation only supports ELEN "
"in the range [8, 64]");
return;
}
if (cpu->cfg.vext_spec) {
if (!g_strcmp0(cpu->cfg.vext_spec, "v0.7.1")) {
vext_version = VEXT_VERSION_0_07_1;
} else {
error_setg(errp,
"Unsupported vector spec version '%s'",
cpu->cfg.vext_spec);
return;
}
} else {
qemu_log("vector version is not specified, "
"use the default value v0.7.1\n");
}
set_vext_version(env, vext_version);
}
set_misa(env, target_misa);
}
riscv_cpu_register_gdb_regs_for_features(cs);
qemu_init_vcpu(cs);
cpu_reset(cs);
mcc->parent_realize(dev, errp);
}
#ifndef CONFIG_USER_ONLY
static void riscv_cpu_set_irq(void *opaque, int irq, int level)
{
RISCVCPU *cpu = RISCV_CPU(opaque);
switch (irq) {
case IRQ_U_SOFT:
case IRQ_S_SOFT:
case IRQ_VS_SOFT:
case IRQ_M_SOFT:
case IRQ_U_TIMER:
case IRQ_S_TIMER:
case IRQ_VS_TIMER:
case IRQ_M_TIMER:
case IRQ_U_EXT:
case IRQ_S_EXT:
case IRQ_VS_EXT:
case IRQ_M_EXT:
riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
break;
default:
g_assert_not_reached();
}
}
#endif /* CONFIG_USER_ONLY */
static void riscv_cpu_init(Object *obj)
{
RISCVCPU *cpu = RISCV_CPU(obj);
cpu_set_cpustate_pointers(cpu);
#ifndef CONFIG_USER_ONLY
qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
#endif /* CONFIG_USER_ONLY */
}
static Property riscv_cpu_properties[] = {
DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true),
DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false),
DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, true),
DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true),
DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
/* This is experimental so mark with 'x-' */
DEFINE_PROP_BOOL("x-b", RISCVCPU, cfg.ext_b, false),
DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false),
DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false),
DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
DEFINE_PROP_STRING("bext_spec", RISCVCPU, cfg.bext_spec),
DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec),
DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128),
DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64),
DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
/* ePMP 0.9.3 */
DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC),
DEFINE_PROP_END_OF_LIST(),
};
static gchar *riscv_gdb_arch_name(CPUState *cs)
{
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
if (riscv_cpu_is_32bit(env)) {
return g_strdup("riscv:rv32");
} else {
return g_strdup("riscv:rv64");
}
}
static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
{
RISCVCPU *cpu = RISCV_CPU(cs);
if (strcmp(xmlname, "riscv-csr.xml") == 0) {
return cpu->dyn_csr_xml;
}
return NULL;
}
#ifndef CONFIG_USER_ONLY
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps riscv_sysemu_ops = {
.get_phys_page_debug = riscv_cpu_get_phys_page_debug,
.write_elf64_note = riscv_cpu_write_elf64_note,
.write_elf32_note = riscv_cpu_write_elf32_note,
.legacy_vmsd = &vmstate_riscv_cpu,
};
#endif
#include "hw/core/tcg-cpu-ops.h"
static const struct TCGCPUOps riscv_tcg_ops = {
.initialize = riscv_translate_init,
.synchronize_from_tb = riscv_cpu_synchronize_from_tb,
.tlb_fill = riscv_cpu_tlb_fill,
#ifndef CONFIG_USER_ONLY
.cpu_exec_interrupt = riscv_cpu_exec_interrupt,
.do_interrupt = riscv_cpu_do_interrupt,
.do_transaction_failed = riscv_cpu_do_transaction_failed,
.do_unaligned_access = riscv_cpu_do_unaligned_access,
#endif /* !CONFIG_USER_ONLY */
};
static void riscv_cpu_class_init(ObjectClass *c, void *data)
{
RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
CPUClass *cc = CPU_CLASS(c);
DeviceClass *dc = DEVICE_CLASS(c);
device_class_set_parent_realize(dc, riscv_cpu_realize,
&mcc->parent_realize);
device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
cc->class_by_name = riscv_cpu_class_by_name;
cc->has_work = riscv_cpu_has_work;
cc->dump_state = riscv_cpu_dump_state;
cc->set_pc = riscv_cpu_set_pc;
cc->gdb_read_register = riscv_cpu_gdb_read_register;
cc->gdb_write_register = riscv_cpu_gdb_write_register;
cc->gdb_num_core_regs = 33;
#if defined(TARGET_RISCV32)
cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
#elif defined(TARGET_RISCV64)
cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
#endif
cc->gdb_stop_before_watchpoint = true;
cc->disas_set_info = riscv_cpu_disas_set_info;
#ifndef CONFIG_USER_ONLY
cc->sysemu_ops = &riscv_sysemu_ops;
#endif
cc->gdb_arch_name = riscv_gdb_arch_name;
cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml;
cc->tcg_ops = &riscv_tcg_ops;
device_class_set_props(dc, riscv_cpu_properties);
}
char *riscv_isa_string(RISCVCPU *cpu)
{
int i;
const size_t maxlen = sizeof("rv128") + sizeof(riscv_exts) + 1;
char *isa_str = g_new(char, maxlen);
char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
for (i = 0; i < sizeof(riscv_exts); i++) {
if (cpu->env.misa & RV(riscv_exts[i])) {
*p++ = qemu_tolower(riscv_exts[i]);
}
}
*p = '\0';
return isa_str;
}
static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
{
ObjectClass *class_a = (ObjectClass *)a;
ObjectClass *class_b = (ObjectClass *)b;
const char *name_a, *name_b;
name_a = object_class_get_name(class_a);
name_b = object_class_get_name(class_b);
return strcmp(name_a, name_b);
}
static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
{
const char *typename = object_class_get_name(OBJECT_CLASS(data));
int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
qemu_printf("%.*s\n", len, typename);
}
void riscv_cpu_list(void)
{
GSList *list;
list = object_class_get_list(TYPE_RISCV_CPU, false);
list = g_slist_sort(list, riscv_cpu_list_compare);
g_slist_foreach(list, riscv_cpu_list_entry, NULL);
g_slist_free(list);
}
#define DEFINE_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_CPU, \
.instance_init = initfn \
}
static const TypeInfo riscv_cpu_type_infos[] = {
{
.name = TYPE_RISCV_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(RISCVCPU),
.instance_align = __alignof__(RISCVCPU),
.instance_init = riscv_cpu_init,
.abstract = true,
.class_size = sizeof(RISCVCPUClass),
.class_init = riscv_cpu_class_init,
},
DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init),
#if defined(TARGET_RISCV32)
DEFINE_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init),
#elif defined(TARGET_RISCV64)
DEFINE_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init),
#endif
};
DEFINE_TYPES(riscv_cpu_type_infos)
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