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target/riscv: Replace riscv_cpu_is_32bit with riscv_cpu_mxl

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Shortly, the set of supported XL will not be just 32 and 64,
and representing that properly using the enumeration will be
imperative.

Two places, booting and gdb, intentionally use misa_mxl_max
to emphasize the use of the reset value of misa.mxl, and not
the current cpu state.

Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20211020031709.359469-5-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Richard Henderson 2021-10-19 20:16:58 -07:00 committed by Alistair Francis
parent e91a7227cb
commit db23e5d981
8 changed files with 45 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/riscv/boot.c
View File

@ -35,7 +35,7 @@
bool riscv_is_32bit(RISCVHartArrayState *harts)
{
return riscv_cpu_is_32bit(&harts->harts[0].env);
return harts->harts[0].env.misa_mxl_max == MXL_RV32;
}
target_ulong riscv_calc_kernel_start_addr(RISCVHartArrayState *harts,

2
semihosting/arm-compat-semi.c
View File

@ -775,7 +775,7 @@ static inline bool is_64bit_semihosting(CPUArchState *env)
#if defined(TARGET_ARM)
return is_a64(env);
#elif defined(TARGET_RISCV)
return !riscv_cpu_is_32bit(env);
return riscv_cpu_mxl(env) != MXL_RV32;
#else
#error un-handled architecture
#endif

24
target/riscv/cpu.c
View File

@ -108,11 +108,6 @@ const char *riscv_cpu_get_trap_name(target_ulong cause, bool async)
}
}
bool riscv_cpu_is_32bit(CPURISCVState *env)
{
return env->misa_mxl == MXL_RV32;
}
static void set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext)
{
env->misa_mxl_max = env->misa_mxl = mxl;
@ -249,7 +244,7 @@ static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
#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)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mstatush ",
(target_ulong)(env->mstatus >> 32));
}
@ -372,10 +367,16 @@ static void riscv_cpu_reset(DeviceState *dev)
static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
{
RISCVCPU *cpu = RISCV_CPU(s);
if (riscv_cpu_is_32bit(&cpu->env)) {
switch (riscv_cpu_mxl(&cpu->env)) {
case MXL_RV32:
info->print_insn = print_insn_riscv32;
} else {
break;
case MXL_RV64:
info->print_insn = print_insn_riscv64;
break;
default:
g_assert_not_reached();
}
}
@ -634,10 +635,13 @@ static gchar *riscv_gdb_arch_name(CPUState *cs)
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
if (riscv_cpu_is_32bit(env)) {
switch (riscv_cpu_mxl(env)) {
case MXL_RV32:
return g_strdup("riscv:rv32");
} else {
case MXL_RV64:
return g_strdup("riscv:rv64");
default:
g_assert_not_reached();
}
}

9
target/riscv/cpu.h
View File

@ -396,7 +396,14 @@ FIELD(TB_FLAGS, VILL, 9, 1)
FIELD(TB_FLAGS, HLSX, 10, 1)
FIELD(TB_FLAGS, MSTATUS_HS_FS, 11, 2)
bool riscv_cpu_is_32bit(CPURISCVState *env);
#ifdef TARGET_RISCV32
#define riscv_cpu_mxl(env) ((void)(env), MXL_RV32)
#else
static inline RISCVMXL riscv_cpu_mxl(CPURISCVState *env)
{
return env->misa_mxl;
}
#endif
/*
* A simplification for VLMAX

12
target/riscv/cpu_helper.c
View File

@ -152,7 +152,7 @@ bool riscv_cpu_fp_enabled(CPURISCVState *env)
void riscv_cpu_swap_hypervisor_regs(CPURISCVState *env)
{
uint64_t sd = riscv_cpu_is_32bit(env) ? MSTATUS32_SD : MSTATUS64_SD;
uint64_t sd = riscv_cpu_mxl(env) == MXL_RV32 ? MSTATUS32_SD : MSTATUS64_SD;
uint64_t mstatus_mask = MSTATUS_MXR | MSTATUS_SUM | MSTATUS_FS |
MSTATUS_SPP | MSTATUS_SPIE | MSTATUS_SIE |
MSTATUS64_UXL | sd;
@ -447,7 +447,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
if (first_stage == true) {
if (use_background) {
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
base = (hwaddr)get_field(env->vsatp, SATP32_PPN) << PGSHIFT;
vm = get_field(env->vsatp, SATP32_MODE);
} else {
@ -455,7 +455,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
vm = get_field(env->vsatp, SATP64_MODE);
}
} else {
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
base = (hwaddr)get_field(env->satp, SATP32_PPN) << PGSHIFT;
vm = get_field(env->satp, SATP32_MODE);
} else {
@ -465,7 +465,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
}
widened = 0;
} else {
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
base = (hwaddr)get_field(env->hgatp, SATP32_PPN) << PGSHIFT;
vm = get_field(env->hgatp, SATP32_MODE);
} else {
@ -558,7 +558,7 @@ restart:
}
target_ulong pte;
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
pte = address_space_ldl(cs->as, pte_addr, attrs, &res);
} else {
pte = address_space_ldq(cs->as, pte_addr, attrs, &res);
@ -678,7 +678,7 @@ static void raise_mmu_exception(CPURISCVState *env, target_ulong address,
int page_fault_exceptions, vm;
uint64_t stap_mode;
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
stap_mode = SATP32_MODE;
} else {
stap_mode = SATP64_MODE;

24
target/riscv/csr.c
View File

@ -95,7 +95,7 @@ static RISCVException ctr(CPURISCVState *env, int csrno)
}
break;
}
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
switch (csrno) {
case CSR_CYCLEH:
if (!get_field(env->hcounteren, COUNTEREN_CY) &&
@ -130,7 +130,7 @@ static RISCVException ctr(CPURISCVState *env, int csrno)
static RISCVException ctr32(CPURISCVState *env, int csrno)
{
if (!riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) != MXL_RV32) {
return RISCV_EXCP_ILLEGAL_INST;
}
@ -145,7 +145,7 @@ static RISCVException any(CPURISCVState *env, int csrno)
static RISCVException any32(CPURISCVState *env, int csrno)
{
if (!riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) != MXL_RV32) {
return RISCV_EXCP_ILLEGAL_INST;
}
@ -180,7 +180,7 @@ static RISCVException hmode(CPURISCVState *env, int csrno)
static RISCVException hmode32(CPURISCVState *env, int csrno)
{
if (!riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) != MXL_RV32) {
if (riscv_cpu_virt_enabled(env)) {
return RISCV_EXCP_ILLEGAL_INST;
} else {
@ -486,7 +486,7 @@ static RISCVException read_mstatus(CPURISCVState *env, int csrno,
static int validate_vm(CPURISCVState *env, target_ulong vm)
{
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
return valid_vm_1_10_32[vm & 0xf];
} else {
return valid_vm_1_10_64[vm & 0xf];
@ -510,7 +510,7 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno,
MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR |
MSTATUS_TW;
if (!riscv_cpu_is_32bit(env)) {
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.
@ -522,7 +522,7 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno,
dirty = ((mstatus & MSTATUS_FS) == MSTATUS_FS) |
((mstatus & MSTATUS_XS) == MSTATUS_XS);
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
mstatus = set_field(mstatus, MSTATUS32_SD, dirty);
} else {
mstatus = set_field(mstatus, MSTATUS64_SD, dirty);
@ -795,7 +795,7 @@ static RISCVException read_sstatus(CPURISCVState *env, int csrno,
{
target_ulong mask = (sstatus_v1_10_mask);
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
mask |= SSTATUS32_SD;
} else {
mask |= SSTATUS64_SD;
@ -1006,7 +1006,7 @@ static RISCVException write_satp(CPURISCVState *env, int csrno,
return RISCV_EXCP_NONE;
}
if (riscv_cpu_is_32bit(env)) {
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;
@ -1034,7 +1034,7 @@ static RISCVException read_hstatus(CPURISCVState *env, int csrno,
target_ulong *val)
{
*val = env->hstatus;
if (!riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) != MXL_RV32) {
/* We only support 64-bit VSXL */
*val = set_field(*val, HSTATUS_VSXL, 2);
}
@ -1047,7 +1047,7 @@ static RISCVException write_hstatus(CPURISCVState *env, int csrno,
target_ulong val)
{
env->hstatus = val;
if (!riscv_cpu_is_32bit(env) && get_field(val, HSTATUS_VSXL) != 2) {
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) {
@ -1215,7 +1215,7 @@ static RISCVException write_htimedelta(CPURISCVState *env, int csrno,
return RISCV_EXCP_ILLEGAL_INST;
}
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val);
} else {
env->htimedelta = val;

2
target/riscv/gdbstub.c
View File

@ -161,7 +161,7 @@ static int riscv_gen_dynamic_csr_xml(CPUState *cs, int base_reg)
CPURISCVState *env = &cpu->env;
GString *s = g_string_new(NULL);
riscv_csr_predicate_fn predicate;
int bitsize = riscv_cpu_is_32bit(env) ? 32 : 64;
int bitsize = 16 << env->misa_mxl_max;
int i;
g_string_printf(s, "<?xml version=\"1.0\"?>");

4
target/riscv/monitor.c
View File

@ -150,7 +150,7 @@ static void mem_info_svxx(Monitor *mon, CPUArchState *env)
target_ulong last_size;
int last_attr;
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
base = (hwaddr)get_field(env->satp, SATP32_PPN) << PGSHIFT;
vm = get_field(env->satp, SATP32_MODE);
} else {
@ -220,7 +220,7 @@ void hmp_info_mem(Monitor *mon, const QDict *qdict)
return;
}
if (riscv_cpu_is_32bit(env)) {
if (riscv_cpu_mxl(env) == MXL_RV32) {
if (!(env->satp & SATP32_MODE)) {
monitor_printf(mon, "No translation or protection\n");
return;