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MIPS patches queue

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- Fix CACHEE opcode
 - Add missing CP0 checks to nanoMIPS RDPGPR / WRPGPR opcodes
 - Remove isa_get_irq() call in PIIX4 south bridge
 - Add various missing fields to the MIPS CPU migration vmstate
 - Lot of code moved around to allow TCG or KVM only builds
 - Restrict non-virtualized machines to TCG
 - Add KVM mips64el cross-build jobs to gitlab-ci
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Merge remote-tracking branch 'remotes/philmd/tags/mips-20210502' into staging

MIPS patches queue

- Fix CACHEE opcode
- Add missing CP0 checks to nanoMIPS RDPGPR / WRPGPR opcodes
- Remove isa_get_irq() call in PIIX4 south bridge
- Add various missing fields to the MIPS CPU migration vmstate
- Lot of code moved around to allow TCG or KVM only builds
- Restrict non-virtualized machines to TCG
- Add KVM mips64el cross-build jobs to gitlab-ci

# gpg: Signature made Sun 02 May 2021 15:56:51 BST
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/mips-20210502: (36 commits)
  gitlab-ci: Add KVM mips64el cross-build jobs
  hw/mips: Restrict non-virtualized machines to TCG
  target/mips: Move TCG source files under tcg/ sub directory
  target/mips: Move CP0 helpers to sysemu/cp0.c
  target/mips: Move exception management code to exception.c
  target/mips: Move TLB management helpers to tcg/sysemu/tlb_helper.c
  target/mips: Move helper_cache() to tcg/sysemu/special_helper.c
  target/mips: Move Special opcodes to tcg/sysemu/special_helper.c
  target/mips: Restrict CPUMIPSTLBContext::map_address() handlers scope
  target/mips: Move tlb_helper.c to tcg/sysemu/
  target/mips: Restrict mmu_init() to TCG
  target/mips: Move sysemu TCG-specific code to tcg/sysemu/ subfolder
  target/mips: Restrict cpu_mips_get_random() / update_pagemask() to TCG
  target/mips: Move physical addressing code to sysemu/physaddr.c
  target/mips: Move sysemu specific files under sysemu/ subfolder
  target/mips: Move cpu_signal_handler definition around
  target/mips: Add simple user-mode mips_cpu_tlb_fill()
  target/mips: Add simple user-mode mips_cpu_do_interrupt()
  target/mips: Introduce tcg-internal.h for TCG specific declarations
  meson: Introduce meson_user_arch source set for arch-specific user-mode
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-05-03 12:05:11 +01:00
commit e93d8bcf9d
49 changed files with 2426 additions and 2158 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
.gitlab-ci.d/crossbuilds.yml
View File

@ -176,6 +176,14 @@ cross-s390x-kvm-only:
IMAGE: debian-s390x-cross
ACCEL_CONFIGURE_OPTS: --disable-tcg
cross-mips64el-kvm-only:
extends: .cross_accel_build_job
needs:
job: mips64el-debian-cross-container
variables:
IMAGE: debian-mips64el-cross
ACCEL_CONFIGURE_OPTS: --disable-tcg --target-list=mips64el-softmmu
cross-win32-system:
extends: .cross_system_build_job
needs:

3
MAINTAINERS
View File

@ -404,7 +404,8 @@ F: target/arm/kvm.c
MIPS KVM CPUs
M: Huacai Chen <chenhuacai@kernel.org>
S: Odd Fixes
F: target/mips/kvm.c
F: target/mips/kvm*
F: target/mips/sysemu/
PPC KVM CPUs
M: David Gibson <david@gibson.dropbear.id.au>

5
hw/isa/piix4.c
View File

@ -268,8 +268,9 @@ DeviceState *piix4_create(PCIBus *pci_bus, ISABus **isa_bus, I2CBus **smbus)
pci_create_simple(pci_bus, devfn + 2, "piix4-usb-uhci");
if (smbus) {
*smbus = piix4_pm_init(pci_bus, devfn + 3, 0x1100,
isa_get_irq(NULL, 9), NULL, 0, NULL);
}
qdev_get_gpio_in_named(dev, "isa", 9),
NULL, 0, NULL);
}
return dev;
}

11
hw/mips/meson.build
View File

@ -1,12 +1,15 @@
mips_ss = ss.source_set()
mips_ss.add(files('bootloader.c', 'mips_int.c'))
mips_ss.add(when: 'CONFIG_FW_CFG_MIPS', if_true: files('fw_cfg.c'))
mips_ss.add(when: 'CONFIG_FULOONG', if_true: files('fuloong2e.c'))
mips_ss.add(when: 'CONFIG_LOONGSON3V', if_true: files('loongson3_bootp.c', 'loongson3_virt.c'))
mips_ss.add(when: 'CONFIG_JAZZ', if_true: files('jazz.c'))
mips_ss.add(when: 'CONFIG_MALTA', if_true: files('gt64xxx_pci.c', 'malta.c'))
mips_ss.add(when: 'CONFIG_MIPSSIM', if_true: files('mipssim.c'))
mips_ss.add(when: 'CONFIG_MIPS_BOSTON', if_true: [files('boston.c'), fdt])
mips_ss.add(when: 'CONFIG_MIPS_CPS', if_true: files('cps.c'))
if 'CONFIG_TCG' in config_all
mips_ss.add(when: 'CONFIG_JAZZ', if_true: files('jazz.c'))
mips_ss.add(when: 'CONFIG_MIPSSIM', if_true: files('mipssim.c'))
mips_ss.add(when: 'CONFIG_FULOONG', if_true: files('fuloong2e.c'))
mips_ss.add(when: 'CONFIG_MIPS_BOSTON', if_true: [files('boston.c'), fdt])
endif
hw_arch += {'mips': mips_ss}

6
meson.build
View File

@ -1751,6 +1751,7 @@ modules = {}
hw_arch = {}
target_arch = {}
target_softmmu_arch = {}
target_user_arch = {}
###############
# Trace files #
@ -2168,6 +2169,11 @@ foreach target : target_dirs
abi = config_target['TARGET_ABI_DIR']
target_type='user'
qemu_target_name = 'qemu-' + target_name
if arch in target_user_arch
t = target_user_arch[arch].apply(config_target, strict: false)
arch_srcs += t.sources()
arch_deps += t.dependencies()
endif
if 'CONFIG_LINUX_USER' in config_target
base_dir = 'linux-user'
target_inc += include_directories('linux-user/host/' / config_host['ARCH'])

311
target/mips/cpu.c
View File

@ -35,155 +35,84 @@
#include "qapi/qapi-commands-machine-target.h"
#include "fpu_helper.h"
#if !defined(CONFIG_USER_ONLY)
/* Called for updates to CP0_Status. */
void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
{
int32_t tcstatus, *tcst;
uint32_t v = cpu->CP0_Status;
uint32_t cu, mx, asid, ksu;
uint32_t mask = ((1 << CP0TCSt_TCU3)
| (1 << CP0TCSt_TCU2)
| (1 << CP0TCSt_TCU1)
| (1 << CP0TCSt_TCU0)
| (1 << CP0TCSt_TMX)
| (3 << CP0TCSt_TKSU)
| (0xff << CP0TCSt_TASID));
cu = (v >> CP0St_CU0) & 0xf;
mx = (v >> CP0St_MX) & 0x1;
ksu = (v >> CP0St_KSU) & 0x3;
asid = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
tcstatus = cu << CP0TCSt_TCU0;
tcstatus |= mx << CP0TCSt_TMX;
tcstatus |= ksu << CP0TCSt_TKSU;
tcstatus |= asid;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
} else {
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~mask;
*tcst |= tcstatus;
compute_hflags(cpu);
}
void cpu_mips_store_status(CPUMIPSState *env, target_ulong val)
{
uint32_t mask = env->CP0_Status_rw_bitmask;
target_ulong old = env->CP0_Status;
if (env->insn_flags & ISA_MIPS_R6) {
bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3;
#if defined(TARGET_MIPS64)
uint32_t ksux = (1 << CP0St_KX) & val;
ksux |= (ksux >> 1) & val; /* KX = 0 forces SX to be 0 */
ksux |= (ksux >> 1) & val; /* SX = 0 forces UX to be 0 */
val = (val & ~(7 << CP0St_UX)) | ksux;
#endif
if (has_supervisor && extract32(val, CP0St_KSU, 2) == 0x3) {
mask &= ~(3 << CP0St_KSU);
}
mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & val);
}
env->CP0_Status = (old & ~mask) | (val & mask);
#if defined(TARGET_MIPS64)
if ((env->CP0_Status ^ old) & (old & (7 << CP0St_UX))) {
/* Access to at least one of the 64-bit segments has been disabled */
tlb_flush(env_cpu(env));
}
#endif
if (ase_mt_available(env)) {
sync_c0_status(env, env, env->current_tc);
} else {
compute_hflags(env);
}
}
void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val)
{
uint32_t mask = 0x00C00300;
uint32_t old = env->CP0_Cause;
int i;
if (env->insn_flags & ISA_MIPS_R2) {
mask |= 1 << CP0Ca_DC;
}
if (env->insn_flags & ISA_MIPS_R6) {
mask &= ~((1 << CP0Ca_WP) & val);
}
env->CP0_Cause = (env->CP0_Cause & ~mask) | (val & mask);
if ((old ^ env->CP0_Cause) & (1 << CP0Ca_DC)) {
if (env->CP0_Cause & (1 << CP0Ca_DC)) {
cpu_mips_stop_count(env);
} else {
cpu_mips_start_count(env);
}
}
/* Set/reset software interrupts */
for (i = 0 ; i < 2 ; i++) {
if ((old ^ env->CP0_Cause) & (1 << (CP0Ca_IP + i))) {
cpu_mips_soft_irq(env, i, env->CP0_Cause & (1 << (CP0Ca_IP + i)));
}
}
}
#endif /* !CONFIG_USER_ONLY */
static const char * const excp_names[EXCP_LAST + 1] = {
[EXCP_RESET] = "reset",
[EXCP_SRESET] = "soft reset",
[EXCP_DSS] = "debug single step",
[EXCP_DINT] = "debug interrupt",
[EXCP_NMI] = "non-maskable interrupt",
[EXCP_MCHECK] = "machine check",
[EXCP_EXT_INTERRUPT] = "interrupt",
[EXCP_DFWATCH] = "deferred watchpoint",
[EXCP_DIB] = "debug instruction breakpoint",
[EXCP_IWATCH] = "instruction fetch watchpoint",
[EXCP_AdEL] = "address error load",
[EXCP_AdES] = "address error store",
[EXCP_TLBF] = "TLB refill",
[EXCP_IBE] = "instruction bus error",
[EXCP_DBp] = "debug breakpoint",
[EXCP_SYSCALL] = "syscall",
[EXCP_BREAK] = "break",
[EXCP_CpU] = "coprocessor unusable",
[EXCP_RI] = "reserved instruction",
[EXCP_OVERFLOW] = "arithmetic overflow",
[EXCP_TRAP] = "trap",
[EXCP_FPE] = "floating point",
[EXCP_DDBS] = "debug data break store",
[EXCP_DWATCH] = "data watchpoint",
[EXCP_LTLBL] = "TLB modify",
[EXCP_TLBL] = "TLB load",
[EXCP_TLBS] = "TLB store",
[EXCP_DBE] = "data bus error",
[EXCP_DDBL] = "debug data break load",
[EXCP_THREAD] = "thread",
[EXCP_MDMX] = "MDMX",
[EXCP_C2E] = "precise coprocessor 2",
[EXCP_CACHE] = "cache error",
[EXCP_TLBXI] = "TLB execute-inhibit",
[EXCP_TLBRI] = "TLB read-inhibit",
[EXCP_MSADIS] = "MSA disabled",
[EXCP_MSAFPE] = "MSA floating point",
const char regnames[32][4] = {
"r0", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra",
};
const char *mips_exception_name(int32_t exception)
static void fpu_dump_fpr(fpr_t *fpr, FILE *f, bool is_fpu64)
{
if (exception < 0 || exception > EXCP_LAST) {
return "unknown";
if (is_fpu64) {
qemu_fprintf(f, "w:%08x d:%016" PRIx64 " fd:%13g fs:%13g psu: %13g\n",
fpr->w[FP_ENDIAN_IDX], fpr->d,
(double)fpr->fd,
(double)fpr->fs[FP_ENDIAN_IDX],
(double)fpr->fs[!FP_ENDIAN_IDX]);
} else {
fpr_t tmp;
tmp.w[FP_ENDIAN_IDX] = fpr->w[FP_ENDIAN_IDX];
tmp.w[!FP_ENDIAN_IDX] = (fpr + 1)->w[FP_ENDIAN_IDX];
qemu_fprintf(f, "w:%08x d:%016" PRIx64 " fd:%13g fs:%13g psu:%13g\n",
tmp.w[FP_ENDIAN_IDX], tmp.d,
(double)tmp.fd,
(double)tmp.fs[FP_ENDIAN_IDX],
(double)tmp.fs[!FP_ENDIAN_IDX]);
}
}
static void fpu_dump_state(CPUMIPSState *env, FILE *f, int flags)
{
int i;
bool is_fpu64 = !!(env->hflags & MIPS_HFLAG_F64);
qemu_fprintf(f,
"CP1 FCR0 0x%08x FCR31 0x%08x SR.FR %d fp_status 0x%02x\n",
env->active_fpu.fcr0, env->active_fpu.fcr31, is_fpu64,
get_float_exception_flags(&env->active_fpu.fp_status));
for (i = 0; i < 32; (is_fpu64) ? i++ : (i += 2)) {
qemu_fprintf(f, "%3s: ", fregnames[i]);
fpu_dump_fpr(&env->active_fpu.fpr[i], f, is_fpu64);
}
}
static void mips_cpu_dump_state(CPUState *cs, FILE *f, int flags)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
int i;
qemu_fprintf(f, "pc=0x" TARGET_FMT_lx " HI=0x" TARGET_FMT_lx
" LO=0x" TARGET_FMT_lx " ds %04x "
TARGET_FMT_lx " " TARGET_FMT_ld "\n",
env->active_tc.PC, env->active_tc.HI[0], env->active_tc.LO[0],
env->hflags, env->btarget, env->bcond);
for (i = 0; i < 32; i++) {
if ((i & 3) == 0) {
qemu_fprintf(f, "GPR%02d:", i);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx,
regnames[i], env->active_tc.gpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
qemu_fprintf(f, "CP0 Status 0x%08x Cause 0x%08x EPC 0x"
TARGET_FMT_lx "\n",
env->CP0_Status, env->CP0_Cause, env->CP0_EPC);
qemu_fprintf(f, " Config0 0x%08x Config1 0x%08x LLAddr 0x%016"
PRIx64 "\n",
env->CP0_Config0, env->CP0_Config1, env->CP0_LLAddr);
qemu_fprintf(f, " Config2 0x%08x Config3 0x%08x\n",
env->CP0_Config2, env->CP0_Config3);
qemu_fprintf(f, " Config4 0x%08x Config5 0x%08x\n",
env->CP0_Config4, env->CP0_Config5);
if ((flags & CPU_DUMP_FPU) && (env->hflags & MIPS_HFLAG_FPU)) {
fpu_dump_state(env, f, flags);
}
return excp_names[exception];
}
void cpu_set_exception_base(int vp_index, target_ulong address)
@ -192,101 +121,13 @@ void cpu_set_exception_base(int vp_index, target_ulong address)
vp->env.exception_base = address;
}
target_ulong exception_resume_pc(CPUMIPSState *env)
{
target_ulong bad_pc;
target_ulong isa_mode;
isa_mode = !!(env->hflags & MIPS_HFLAG_M16);
bad_pc = env->active_tc.PC | isa_mode;
if (env->hflags & MIPS_HFLAG_BMASK) {
/*
* If the exception was raised from a delay slot, come back to
* the jump.
*/
bad_pc -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
}
return bad_pc;
}
bool mips_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{
if (interrupt_request & CPU_INTERRUPT_HARD) {
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
if (cpu_mips_hw_interrupts_enabled(env) &&
cpu_mips_hw_interrupts_pending(env)) {
/* Raise it */
cs->exception_index = EXCP_EXT_INTERRUPT;
env->error_code = 0;
mips_cpu_do_interrupt(cs);
return true;
}
}
return false;
}
void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env,
uint32_t exception,
int error_code,
uintptr_t pc)
{
CPUState *cs = env_cpu(env);
qemu_log_mask(CPU_LOG_INT, "%s: %d (%s) %d\n",
__func__, exception, mips_exception_name(exception),
error_code);
cs->exception_index = exception;
env->error_code = error_code;
cpu_loop_exit_restore(cs, pc);
}
static void mips_cpu_set_pc(CPUState *cs, vaddr value)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
env->active_tc.PC = value & ~(target_ulong)1;
if (value & 1) {
env->hflags |= MIPS_HFLAG_M16;
} else {
env->hflags &= ~(MIPS_HFLAG_M16);
}
mips_env_set_pc(&cpu->env, value);
}
#ifdef CONFIG_TCG
static void mips_cpu_synchronize_from_tb(CPUState *cs,
const TranslationBlock *tb)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
env->active_tc.PC = tb->pc;
env->hflags &= ~MIPS_HFLAG_BMASK;
env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
}
# ifndef CONFIG_USER_ONLY
static bool mips_io_recompile_replay_branch(CPUState *cs,
const TranslationBlock *tb)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
if ((env->hflags & MIPS_HFLAG_BMASK) != 0
&& env->active_tc.PC != tb->pc) {
env->active_tc.PC -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
env->hflags &= ~MIPS_HFLAG_BMASK;
return true;
}
return false;
}
# endif /* !CONFIG_USER_ONLY */
#endif /* CONFIG_TCG */
static bool mips_cpu_has_work(CPUState *cs)
{
MIPSCPU *cpu = MIPS_CPU(cs);
@ -634,7 +475,7 @@ static void mips_cpu_realizefn(DeviceState *dev, Error **errp)
env->exception_base = (int32_t)0xBFC00000;
#ifndef CONFIG_USER_ONLY
#if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
mmu_init(env, env->cpu_model);
#endif
fpu_init(env, env->cpu_model);

25
target/mips/fpu.c Normal file
View File

@ -0,0 +1,25 @@
/*
* Helpers for emulation of FPU-related MIPS instructions.
*
* Copyright (C) 2004-2005 Jocelyn Mayer
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "qemu/osdep.h"
#include "fpu/softfloat-helpers.h"
#include "fpu_helper.h"
/* convert MIPS rounding mode in FCR31 to IEEE library */
const FloatRoundMode ieee_rm[4] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down
};
const char fregnames[32][4] = {
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
};

183
target/mips/helper.h
View File

@ -2,10 +2,6 @@ DEF_HELPER_3(raise_exception_err, noreturn, env, i32, int)
DEF_HELPER_2(raise_exception, noreturn, env, i32)
DEF_HELPER_1(raise_exception_debug, noreturn, env)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_1(do_semihosting, void, env)
#endif
#ifdef TARGET_MIPS64
DEF_HELPER_4(sdl, void, env, tl, tl, int)
DEF_HELPER_4(sdr, void, env, tl, tl, int)
@ -42,164 +38,6 @@ DEF_HELPER_FLAGS_1(dbitswap, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_4(rotx, TCG_CALL_NO_RWG_SE, tl, tl, i32, i32, i32)
#ifndef CONFIG_USER_ONLY
/* CP0 helpers */
DEF_HELPER_1(mfc0_mvpcontrol, tl, env)
DEF_HELPER_1(mfc0_mvpconf0, tl, env)
DEF_HELPER_1(mfc0_mvpconf1, tl, env)
DEF_HELPER_1(mftc0_vpecontrol, tl, env)
DEF_HELPER_1(mftc0_vpeconf0, tl, env)
DEF_HELPER_1(mfc0_random, tl, env)
DEF_HELPER_1(mfc0_tcstatus, tl, env)
DEF_HELPER_1(mftc0_tcstatus, tl, env)
DEF_HELPER_1(mfc0_tcbind, tl, env)
DEF_HELPER_1(mftc0_tcbind, tl, env)
DEF_HELPER_1(mfc0_tcrestart, tl, env)
DEF_HELPER_1(mftc0_tcrestart, tl, env)
DEF_HELPER_1(mfc0_tchalt, tl, env)
DEF_HELPER_1(mftc0_tchalt, tl, env)
DEF_HELPER_1(mfc0_tccontext, tl, env)
DEF_HELPER_1(mftc0_tccontext, tl, env)
DEF_HELPER_1(mfc0_tcschedule, tl, env)
DEF_HELPER_1(mftc0_tcschedule, tl, env)
DEF_HELPER_1(mfc0_tcschefback, tl, env)
DEF_HELPER_1(mftc0_tcschefback, tl, env)
DEF_HELPER_1(mfc0_count, tl, env)
DEF_HELPER_1(mfc0_saar, tl, env)
DEF_HELPER_1(mfhc0_saar, tl, env)
DEF_HELPER_1(mftc0_entryhi, tl, env)
DEF_HELPER_1(mftc0_status, tl, env)
DEF_HELPER_1(mftc0_cause, tl, env)
DEF_HELPER_1(mftc0_epc, tl, env)
DEF_HELPER_1(mftc0_ebase, tl, env)
DEF_HELPER_2(mftc0_configx, tl, env, tl)
DEF_HELPER_1(mfc0_lladdr, tl, env)
DEF_HELPER_1(mfc0_maar, tl, env)
DEF_HELPER_1(mfhc0_maar, tl, env)
DEF_HELPER_2(mfc0_watchlo, tl, env, i32)
DEF_HELPER_2(mfc0_watchhi, tl, env, i32)
DEF_HELPER_2(mfhc0_watchhi, tl, env, i32)
DEF_HELPER_1(mfc0_debug, tl, env)
DEF_HELPER_1(mftc0_debug, tl, env)
#ifdef TARGET_MIPS64
DEF_HELPER_1(dmfc0_tcrestart, tl, env)
DEF_HELPER_1(dmfc0_tchalt, tl, env)
DEF_HELPER_1(dmfc0_tccontext, tl, env)
DEF_HELPER_1(dmfc0_tcschedule, tl, env)
DEF_HELPER_1(dmfc0_tcschefback, tl, env)
DEF_HELPER_1(dmfc0_lladdr, tl, env)
DEF_HELPER_1(dmfc0_maar, tl, env)
DEF_HELPER_2(dmfc0_watchlo, tl, env, i32)
DEF_HELPER_2(dmfc0_watchhi, tl, env, i32)
DEF_HELPER_1(dmfc0_saar, tl, env)
#endif /* TARGET_MIPS64 */
DEF_HELPER_2(mtc0_index, void, env, tl)
DEF_HELPER_2(mtc0_mvpcontrol, void, env, tl)
DEF_HELPER_2(mtc0_vpecontrol, void, env, tl)
DEF_HELPER_2(mttc0_vpecontrol, void, env, tl)
DEF_HELPER_2(mtc0_vpeconf0, void, env, tl)
DEF_HELPER_2(mttc0_vpeconf0, void, env, tl)
DEF_HELPER_2(mtc0_vpeconf1, void, env, tl)
DEF_HELPER_2(mtc0_yqmask, void, env, tl)
DEF_HELPER_2(mtc0_vpeopt, void, env, tl)
DEF_HELPER_2(mtc0_entrylo0, void, env, tl)
DEF_HELPER_2(mtc0_tcstatus, void, env, tl)
DEF_HELPER_2(mttc0_tcstatus, void, env, tl)
DEF_HELPER_2(mtc0_tcbind, void, env, tl)
DEF_HELPER_2(mttc0_tcbind, void, env, tl)
DEF_HELPER_2(mtc0_tcrestart, void, env, tl)
DEF_HELPER_2(mttc0_tcrestart, void, env, tl)
DEF_HELPER_2(mtc0_tchalt, void, env, tl)
DEF_HELPER_2(mttc0_tchalt, void, env, tl)
DEF_HELPER_2(mtc0_tccontext, void, env, tl)
DEF_HELPER_2(mttc0_tccontext, void, env, tl)
DEF_HELPER_2(mtc0_tcschedule, void, env, tl)
DEF_HELPER_2(mttc0_tcschedule, void, env, tl)
DEF_HELPER_2(mtc0_tcschefback, void, env, tl)
DEF_HELPER_2(mttc0_tcschefback, void, env, tl)
DEF_HELPER_2(mtc0_entrylo1, void, env, tl)
DEF_HELPER_2(mtc0_context, void, env, tl)
DEF_HELPER_2(mtc0_memorymapid, void, env, tl)
DEF_HELPER_2(mtc0_pagemask, void, env, tl)
DEF_HELPER_2(mtc0_pagegrain, void, env, tl)
DEF_HELPER_2(mtc0_segctl0, void, env, tl)
DEF_HELPER_2(mtc0_segctl1, void, env, tl)
DEF_HELPER_2(mtc0_segctl2, void, env, tl)
DEF_HELPER_2(mtc0_pwfield, void, env, tl)
DEF_HELPER_2(mtc0_pwsize, void, env, tl)
DEF_HELPER_2(mtc0_wired, void, env, tl)
DEF_HELPER_2(mtc0_srsconf0, void, env, tl)
DEF_HELPER_2(mtc0_srsconf1, void, env, tl)
DEF_HELPER_2(mtc0_srsconf2, void, env, tl)
DEF_HELPER_2(mtc0_srsconf3, void, env, tl)
DEF_HELPER_2(mtc0_srsconf4, void, env, tl)
DEF_HELPER_2(mtc0_hwrena, void, env, tl)
DEF_HELPER_2(mtc0_pwctl, void, env, tl)
DEF_HELPER_2(mtc0_count, void, env, tl)
DEF_HELPER_2(mtc0_saari, void, env, tl)
DEF_HELPER_2(mtc0_saar, void, env, tl)
DEF_HELPER_2(mthc0_saar, void, env, tl)
DEF_HELPER_2(mtc0_entryhi, void, env, tl)
DEF_HELPER_2(mttc0_entryhi, void, env, tl)
DEF_HELPER_2(mtc0_compare, void, env, tl)
DEF_HELPER_2(mtc0_status, void, env, tl)
DEF_HELPER_2(mttc0_status, void, env, tl)
DEF_HELPER_2(mtc0_intctl, void, env, tl)
DEF_HELPER_2(mtc0_srsctl, void, env, tl)
DEF_HELPER_2(mtc0_cause, void, env, tl)
DEF_HELPER_2(mttc0_cause, void, env, tl)
DEF_HELPER_2(mtc0_ebase, void, env, tl)
DEF_HELPER_2(mttc0_ebase, void, env, tl)
DEF_HELPER_2(mtc0_config0, void, env, tl)
DEF_HELPER_2(mtc0_config2, void, env, tl)
DEF_HELPER_2(mtc0_config3, void, env, tl)
DEF_HELPER_2(mtc0_config4, void, env, tl)
DEF_HELPER_2(mtc0_config5, void, env, tl)
DEF_HELPER_2(mtc0_lladdr, void, env, tl)
DEF_HELPER_2(mtc0_maar, void, env, tl)
DEF_HELPER_2(mthc0_maar, void, env, tl)
DEF_HELPER_2(mtc0_maari, void, env, tl)
DEF_HELPER_3(mtc0_watchlo, void, env, tl, i32)
DEF_HELPER_3(mtc0_watchhi, void, env, tl, i32)
DEF_HELPER_3(mthc0_watchhi, void, env, tl, i32)
DEF_HELPER_2(mtc0_xcontext, void, env, tl)
DEF_HELPER_2(mtc0_framemask, void, env, tl)
DEF_HELPER_2(mtc0_debug, void, env, tl)
DEF_HELPER_2(mttc0_debug, void, env, tl)
DEF_HELPER_2(mtc0_performance0, void, env, tl)
DEF_HELPER_2(mtc0_errctl, void, env, tl)
DEF_HELPER_2(mtc0_taglo, void, env, tl)
DEF_HELPER_2(mtc0_datalo, void, env, tl)
DEF_HELPER_2(mtc0_taghi, void, env, tl)
DEF_HELPER_2(mtc0_datahi, void, env, tl)
#if defined(TARGET_MIPS64)
DEF_HELPER_2(dmtc0_entrylo0, void, env, i64)
DEF_HELPER_2(dmtc0_entrylo1, void, env, i64)
#endif
/* MIPS MT functions */
DEF_HELPER_2(mftgpr, tl, env, i32)
DEF_HELPER_2(mftlo, tl, env, i32)
DEF_HELPER_2(mfthi, tl, env, i32)
DEF_HELPER_2(mftacx, tl, env, i32)
DEF_HELPER_1(mftdsp, tl, env)
DEF_HELPER_3(mttgpr, void, env, tl, i32)
DEF_HELPER_3(mttlo, void, env, tl, i32)
DEF_HELPER_3(mtthi, void, env, tl, i32)
DEF_HELPER_3(mttacx, void, env, tl, i32)
DEF_HELPER_2(mttdsp, void, env, tl)
DEF_HELPER_0(dmt, tl)
DEF_HELPER_0(emt, tl)
DEF_HELPER_1(dvpe, tl, env)
DEF_HELPER_1(evpe, tl, env)
/* R6 Multi-threading */
DEF_HELPER_1(dvp, tl, env)
DEF_HELPER_1(evp, tl, env)
#endif /* !CONFIG_USER_ONLY */
/* microMIPS functions */
DEF_HELPER_4(lwm, void, env, tl, tl, i32)
DEF_HELPER_4(swm, void, env, tl, tl, i32)
@ -364,21 +202,6 @@ FOP_PROTO(sune)
FOP_PROTO(sne)
#undef FOP_PROTO
/* Special functions */
#ifndef CONFIG_USER_ONLY
DEF_HELPER_1(tlbwi, void, env)
DEF_HELPER_1(tlbwr, void, env)
DEF_HELPER_1(tlbp, void, env)
DEF_HELPER_1(tlbr, void, env)
DEF_HELPER_1(tlbinv, void, env)
DEF_HELPER_1(tlbinvf, void, env)
DEF_HELPER_1(di, tl, env)
DEF_HELPER_1(ei, tl, env)
DEF_HELPER_1(eret, void, env)
DEF_HELPER_1(eretnc, void, env)
DEF_HELPER_1(deret, void, env)
DEF_HELPER_3(ginvt, void, env, tl, i32)
#endif /* !CONFIG_USER_ONLY */
DEF_HELPER_1(rdhwr_cpunum, tl, env)
DEF_HELPER_1(rdhwr_synci_step, tl, env)
DEF_HELPER_1(rdhwr_cc, tl, env)
@ -781,6 +604,8 @@ DEF_HELPER_FLAGS_3(dmthlip, 0, void, tl, tl, env)
DEF_HELPER_FLAGS_3(wrdsp, 0, void, tl, tl, env)
DEF_HELPER_FLAGS_2(rddsp, 0, tl, tl, env)
DEF_HELPER_3(cache, void, env, tl, i32)
#ifndef CONFIG_USER_ONLY
#include "tcg/sysemu_helper.h.inc"
#endif /* !CONFIG_USER_ONLY */
#include "msa_helper.h.inc"
#include "tcg/msa_helper.h.inc"

105
target/mips/internal.h
View File

@ -9,6 +9,9 @@
#define MIPS_INTERNAL_H
#include "exec/memattrs.h"
#ifdef CONFIG_TCG
#include "tcg/tcg-internal.h"
#endif
/*
* MMU types, the first four entries have the same layout as the
@ -71,21 +74,41 @@ struct mips_def_t {
int32_t SAARP;
};
extern const char regnames[32][4];
extern const char fregnames[32][4];
extern const struct mips_def_t mips_defs[];
extern const int mips_defs_number;
void mips_cpu_do_interrupt(CPUState *cpu);
bool mips_cpu_exec_interrupt(CPUState *cpu, int int_req);
void mips_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
hwaddr mips_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
int mips_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int mips_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
void mips_cpu_do_unaligned_access(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr);
#define USEG_LIMIT ((target_ulong)(int32_t)0x7FFFFFFFUL)
#define KSEG0_BASE ((target_ulong)(int32_t)0x80000000UL)
#define KSEG1_BASE ((target_ulong)(int32_t)0xA0000000UL)
#define KSEG2_BASE ((target_ulong)(int32_t)0xC0000000UL)
#define KSEG3_BASE ((target_ulong)(int32_t)0xE0000000UL)
#define KVM_KSEG0_BASE ((target_ulong)(int32_t)0x40000000UL)
#define KVM_KSEG2_BASE ((target_ulong)(int32_t)0x60000000UL)
#if !defined(CONFIG_USER_ONLY)
enum {
TLBRET_XI = -6,
TLBRET_RI = -5,
TLBRET_DIRTY = -4,
TLBRET_INVALID = -3,
TLBRET_NOMATCH = -2,
TLBRET_BADADDR = -1,
TLBRET_MATCH = 0
};
int get_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx);
hwaddr mips_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
typedef struct r4k_tlb_t r4k_tlb_t;
struct r4k_tlb_t {
target_ulong VPN;
@ -125,36 +148,16 @@ struct CPUMIPSTLBContext {
} mmu;
};
int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type);
int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type);
int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type);
void r4k_helper_tlbwi(CPUMIPSState *env);
void r4k_helper_tlbwr(CPUMIPSState *env);
void r4k_helper_tlbp(CPUMIPSState *env);
void r4k_helper_tlbr(CPUMIPSState *env);
void r4k_helper_tlbinv(CPUMIPSState *env);
void r4k_helper_tlbinvf(CPUMIPSState *env);
void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra);
uint32_t cpu_mips_get_random(CPUMIPSState *env);
void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc);
void cpu_mips_store_status(CPUMIPSState *env, target_ulong val);
void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val);
void mips_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
vaddr addr, unsigned size,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr);
hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address,
MMUAccessType access_type);
#endif
extern const VMStateDescription vmstate_mips_cpu;
#endif /* !CONFIG_USER_ONLY */
#define cpu_signal_handler cpu_mips_signal_handler
#ifndef CONFIG_USER_ONLY
extern const VMStateDescription vmstate_mips_cpu;
#endif
static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState *env)
{
return (env->CP0_Status & (1 << CP0St_IE)) &&
@ -197,8 +200,6 @@ static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState *env)
return r;
}
void mips_tcg_init(void);
void msa_reset(CPUMIPSState *env);
/* cp0_timer.c */
@ -208,14 +209,15 @@ void cpu_mips_store_compare(CPUMIPSState *env, uint32_t value);
void cpu_mips_start_count(CPUMIPSState *env);
void cpu_mips_stop_count(CPUMIPSState *env);
/* helper.c */
void mmu_init(CPUMIPSState *env, const mips_def_t *def);
bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr);
/* op_helper.c */
void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask);
static inline void mips_env_set_pc(CPUMIPSState *env, target_ulong value)
{
env->active_tc.PC = value & ~(target_ulong)1;
if (value & 1) {
env->hflags |= MIPS_HFLAG_M16;
} else {
env->hflags &= ~(MIPS_HFLAG_M16);
}
}
static inline void restore_pamask(CPUMIPSState *env)
{
@ -397,21 +399,4 @@ static inline void compute_hflags(CPUMIPSState *env)
}
}
void cpu_mips_tlb_flush(CPUMIPSState *env);
void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc);
void cpu_mips_store_status(CPUMIPSState *env, target_ulong val);
void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val);
const char *mips_exception_name(int32_t exception);
void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, uint32_t exception,
int error_code, uintptr_t pc);
static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env,
uint32_t exception,
uintptr_t pc)
{
do_raise_exception_err(env, exception, 0, pc);
}
#endif

55
target/mips/meson.build
View File

@ -1,52 +1,23 @@
gen = [
decodetree.process('mips32r6.decode', extra_args: '--static-decode=decode_mips32r6'),
decodetree.process('mips64r6.decode', extra_args: '--static-decode=decode_mips64r6'),
decodetree.process('msa32.decode', extra_args: '--static-decode=decode_msa32'),
decodetree.process('msa64.decode', extra_args: '--static-decode=decode_msa64'),
decodetree.process('tx79.decode', extra_args: '--static-decode=decode_tx79'),
]
mips_user_ss = ss.source_set()
mips_softmmu_ss = ss.source_set()
mips_ss = ss.source_set()
mips_ss.add(files(
'cpu.c',
'fpu.c',
'gdbstub.c',
'msa.c',
))
mips_tcg_ss = ss.source_set()
mips_tcg_ss.add(gen)
mips_tcg_ss.add(files(
'dsp_helper.c',
'fpu_helper.c',
'lmmi_helper.c',
'msa_helper.c',
'msa_translate.c',
'op_helper.c',
'rel6_translate.c',
'tlb_helper.c',
'translate.c',
'translate_addr_const.c',
'txx9_translate.c',
))
mips_ss.add(when: ['CONFIG_TCG', 'TARGET_MIPS64'], if_true: files(
'tx79_translate.c',
))
mips_tcg_ss.add(when: 'TARGET_MIPS64', if_false: files(
'mxu_translate.c',
))
if have_system
subdir('sysemu')
endif
if 'CONFIG_TCG' in config_all
subdir('tcg')
endif
mips_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'))
mips_softmmu_ss = ss.source_set()
mips_softmmu_ss.add(files(
'addr.c',
'cp0_timer.c',
'machine.c',
))
mips_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files(
'cp0_helper.c',
'mips-semi.c',
))
mips_ss.add_all(when: 'CONFIG_TCG', if_true: [mips_tcg_ss])
target_arch += {'mips': mips_ss}
target_softmmu_arch += {'mips': mips_softmmu_ss}
target_user_arch += {'mips': mips_user_ss}

60
target/mips/msa.c Normal file
View File

@ -0,0 +1,60 @@
/*
* MIPS SIMD Architecture Module Instruction emulation helpers for QEMU.
*
* Copyright (c) 2014 Imagination Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
#include "fpu/softfloat.h"
#include "fpu_helper.h"
void msa_reset(CPUMIPSState *env)
{
if (!ase_msa_available(env)) {
return;
}
#ifdef CONFIG_USER_ONLY
/* MSA access enabled */
env->CP0_Config5 |= 1 << CP0C5_MSAEn;
env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR);
#endif
/*
* MSA CSR:
* - non-signaling floating point exception mode off (NX bit is 0)
* - Cause, Enables, and Flags are all 0
* - round to nearest / ties to even (RM bits are 0)
*/
env->active_tc.msacsr = 0;
restore_msa_fp_status(env);
/* tininess detected after rounding.*/
set_float_detect_tininess(float_tininess_after_rounding,
&env->active_tc.msa_fp_status);
/* clear float_status exception flags */
set_float_exception_flags(0, &env->active_tc.msa_fp_status);
/* clear float_status nan mode */
set_default_nan_mode(0, &env->active_tc.msa_fp_status);
/* set proper signanling bit meaning ("1" means "quiet") */
set_snan_bit_is_one(0, &env->active_tc.msa_fp_status);
}

1210
target/mips/op_helper.c
View File

File diff suppressed because it is too large Load Diff

0
target/mips/addr.c → target/mips/sysemu/addr.c
View File

123
target/mips/sysemu/cp0.c Normal file
View File

@ -0,0 +1,123 @@
/*
* QEMU MIPS CPU
*
* Copyright (c) 2012 SUSE LINUX Products GmbH
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
#include "exec/exec-all.h"
/* Called for updates to CP0_Status. */
void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
{
int32_t tcstatus, *tcst;
uint32_t v = cpu->CP0_Status;
uint32_t cu, mx, asid, ksu;
uint32_t mask = ((1 << CP0TCSt_TCU3)
| (1 << CP0TCSt_TCU2)
| (1 << CP0TCSt_TCU1)
| (1 << CP0TCSt_TCU0)
| (1 << CP0TCSt_TMX)
| (3 << CP0TCSt_TKSU)
| (0xff << CP0TCSt_TASID));
cu = (v >> CP0St_CU0) & 0xf;
mx = (v >> CP0St_MX) & 0x1;
ksu = (v >> CP0St_KSU) & 0x3;
asid = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
tcstatus = cu << CP0TCSt_TCU0;
tcstatus |= mx << CP0TCSt_TMX;
tcstatus |= ksu << CP0TCSt_TKSU;
tcstatus |= asid;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
} else {
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~mask;
*tcst |= tcstatus;
compute_hflags(cpu);
}
void cpu_mips_store_status(CPUMIPSState *env, target_ulong val)
{
uint32_t mask = env->CP0_Status_rw_bitmask;
target_ulong old = env->CP0_Status;
if (env->insn_flags & ISA_MIPS_R6) {
bool has_supervisor = extract32(mask, CP0St_KSU, 2) == 0x3;
#if defined(TARGET_MIPS64)
uint32_t ksux = (1 << CP0St_KX) & val;
ksux |= (ksux >> 1) & val; /* KX = 0 forces SX to be 0 */
ksux |= (ksux >> 1) & val; /* SX = 0 forces UX to be 0 */
val = (val & ~(7 << CP0St_UX)) | ksux;
#endif
if (has_supervisor && extract32(val, CP0St_KSU, 2) == 0x3) {
mask &= ~(3 << CP0St_KSU);
}
mask &= ~(((1 << CP0St_SR) | (1 << CP0St_NMI)) & val);
}
env->CP0_Status = (old & ~mask) | (val & mask);
#if defined(TARGET_MIPS64)
if ((env->CP0_Status ^ old) & (old & (7 << CP0St_UX))) {
/* Access to at least one of the 64-bit segments has been disabled */
tlb_flush(env_cpu(env));
}
#endif
if (ase_mt_available(env)) {
sync_c0_status(env, env, env->current_tc);
} else {
compute_hflags(env);
}
}
void cpu_mips_store_cause(CPUMIPSState *env, target_ulong val)
{
uint32_t mask = 0x00C00300;
uint32_t old = env->CP0_Cause;
int i;
if (env->insn_flags & ISA_MIPS_R2) {
mask |= 1 << CP0Ca_DC;
}
if (env->insn_flags & ISA_MIPS_R6) {
mask &= ~((1 << CP0Ca_WP) & val);
}
env->CP0_Cause = (env->CP0_Cause & ~mask) | (val & mask);
if ((old ^ env->CP0_Cause) & (1 << CP0Ca_DC)) {
if (env->CP0_Cause & (1 << CP0Ca_DC)) {
cpu_mips_stop_count(env);
} else {
cpu_mips_start_count(env);
}
}
/* Set/reset software interrupts */
for (i = 0 ; i < 2 ; i++) {
if ((old ^ env->CP0_Cause) & (1 << (CP0Ca_IP + i))) {
cpu_mips_soft_irq(env, i, env->CP0_Cause & (1 << (CP0Ca_IP + i)));
}
}
}

0
target/mips/cp0_timer.c → target/mips/sysemu/cp0_timer.c
View File

21
target/mips/machine.c → target/mips/sysemu/machine.c
View File

@ -81,6 +81,9 @@ const VMStateDescription vmstate_inactive_fpu = {
static VMStateField vmstate_tc_fields[] = {
VMSTATE_UINTTL_ARRAY(gpr, TCState, 32),
#if defined(TARGET_MIPS64)
VMSTATE_UINT64_ARRAY(gpr_hi, TCState, 32),
#endif /* TARGET_MIPS64 */
VMSTATE_UINTTL(PC, TCState),
VMSTATE_UINTTL_ARRAY(HI, TCState, MIPS_DSP_ACC),
VMSTATE_UINTTL_ARRAY(LO, TCState, MIPS_DSP_ACC),
@ -95,20 +98,22 @@ static VMStateField vmstate_tc_fields[] = {
VMSTATE_INT32(CP0_Debug_tcstatus, TCState),
VMSTATE_UINTTL(CP0_UserLocal, TCState),
VMSTATE_INT32(msacsr, TCState),
VMSTATE_UINTTL_ARRAY(mxu_gpr, TCState, NUMBER_OF_MXU_REGISTERS - 1),
VMSTATE_UINTTL(mxu_cr, TCState),
VMSTATE_END_OF_LIST()
};
const VMStateDescription vmstate_tc = {
.name = "cpu/tc",
.version_id = 1,
.minimum_version_id = 1,
.version_id = 2,
.minimum_version_id = 2,
.fields = vmstate_tc_fields
};
const VMStateDescription vmstate_inactive_tc = {
.name = "cpu/inactive_tc",
.version_id = 1,
.minimum_version_id = 1,
.version_id = 2,
.minimum_version_id = 2,
.fields = vmstate_tc_fields
};
@ -213,8 +218,8 @@ const VMStateDescription vmstate_tlb = {
const VMStateDescription vmstate_mips_cpu = {
.name = "cpu",
.version_id = 20,
.minimum_version_id = 20,
.version_id = 21,
.minimum_version_id = 21,
.post_load = cpu_post_load,
.fields = (VMStateField[]) {
/* Active TC */
@ -241,6 +246,7 @@ const VMStateDescription vmstate_mips_cpu = {
/* Remaining CP0 registers */
VMSTATE_INT32(env.CP0_Index, MIPSCPU),
VMSTATE_INT32(env.CP0_VPControl, MIPSCPU),
VMSTATE_INT32(env.CP0_Random, MIPSCPU),
VMSTATE_INT32(env.CP0_VPEControl, MIPSCPU),
VMSTATE_INT32(env.CP0_VPEConf0, MIPSCPU),
@ -251,6 +257,7 @@ const VMStateDescription vmstate_mips_cpu = {
VMSTATE_INT32(env.CP0_VPEOpt, MIPSCPU),
VMSTATE_UINT64(env.CP0_EntryLo0, MIPSCPU),
VMSTATE_UINT64(env.CP0_EntryLo1, MIPSCPU),
VMSTATE_INT32(env.CP0_GlobalNumber, MIPSCPU),
VMSTATE_UINTTL(env.CP0_Context, MIPSCPU),
VMSTATE_INT32(env.CP0_MemoryMapID, MIPSCPU),
VMSTATE_INT32(env.CP0_PageMask, MIPSCPU),
@ -286,6 +293,7 @@ const VMStateDescription vmstate_mips_cpu = {
VMSTATE_UINTTL(env.CP0_EPC, MIPSCPU),
VMSTATE_INT32(env.CP0_PRid, MIPSCPU),
VMSTATE_UINTTL(env.CP0_EBase, MIPSCPU),
VMSTATE_UINTTL(env.CP0_CMGCRBase, MIPSCPU),
VMSTATE_INT32(env.CP0_Config0, MIPSCPU),
VMSTATE_INT32(env.CP0_Config1, MIPSCPU),
VMSTATE_INT32(env.CP0_Config2, MIPSCPU),
@ -305,6 +313,7 @@ const VMStateDescription vmstate_mips_cpu = {
VMSTATE_INT32(env.CP0_Debug, MIPSCPU),
VMSTATE_UINTTL(env.CP0_DEPC, MIPSCPU),
VMSTATE_INT32(env.CP0_Performance0, MIPSCPU),
VMSTATE_INT32(env.CP0_ErrCtl, MIPSCPU),
VMSTATE_UINT64(env.CP0_TagLo, MIPSCPU),
VMSTATE_INT32(env.CP0_DataLo, MIPSCPU),
VMSTATE_INT32(env.CP0_TagHi, MIPSCPU),

7
target/mips/sysemu/meson.build Normal file
View File

@ -0,0 +1,7 @@
mips_softmmu_ss.add(files(
'addr.c',
'cp0.c',
'cp0_timer.c',
'machine.c',
'physaddr.c',
))

257
target/mips/sysemu/physaddr.c Normal file
View File

@ -0,0 +1,257 @@
/*
* MIPS TLB (Translation lookaside buffer) helpers.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "../internal.h"
static int is_seg_am_mapped(unsigned int am, bool eu, int mmu_idx)
{
/*
* Interpret access control mode and mmu_idx.
* AdE? TLB?
* AM K S U E K S U E
* UK 0 0 1 1 0 0 - - 0
* MK 1 0 1 1 0 1 - - !eu
* MSK 2 0 0 1 0 1 1 - !eu
* MUSK 3 0 0 0 0 1 1 1 !eu
* MUSUK 4 0 0 0 0 0 1 1 0
* USK 5 0 0 1 0 0 0 - 0
* - 6 - - - - - - - -
* UUSK 7 0 0 0 0 0 0 0 0
*/
int32_t adetlb_mask;
switch (mmu_idx) {
case 3: /* ERL */
/* If EU is set, always unmapped */
if (eu) {
return 0;
}
/* fall through */
case MIPS_HFLAG_KM:
/* Never AdE, TLB mapped if AM={1,2,3} */
adetlb_mask = 0x70000000;
goto check_tlb;
case MIPS_HFLAG_SM:
/* AdE if AM={0,1}, TLB mapped if AM={2,3,4} */
adetlb_mask = 0xc0380000;
goto check_ade;
case MIPS_HFLAG_UM:
/* AdE if AM={0,1,2,5}, TLB mapped if AM={3,4} */
adetlb_mask = 0xe4180000;
/* fall through */
check_ade:
/* does this AM cause AdE in current execution mode */
if ((adetlb_mask << am) < 0) {
return TLBRET_BADADDR;
}
adetlb_mask <<= 8;
/* fall through */
check_tlb:
/* is this AM mapped in current execution mode */
return ((adetlb_mask << am) < 0);
default:
assert(0);
return TLBRET_BADADDR;
};
}
static int get_seg_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx,
unsigned int am, bool eu,
target_ulong segmask,
hwaddr physical_base)
{
int mapped = is_seg_am_mapped(am, eu, mmu_idx);
if (mapped < 0) {
/* is_seg_am_mapped can report TLBRET_BADADDR */
return mapped;
} else if (mapped) {
/* The segment is TLB mapped */
return env->tlb->map_address(env, physical, prot, real_address,
access_type);
} else {
/* The segment is unmapped */
*physical = physical_base | (real_address & segmask);
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return TLBRET_MATCH;
}
}
static int get_segctl_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx,
uint16_t segctl, target_ulong segmask)
{
unsigned int am = (segctl & CP0SC_AM_MASK) >> CP0SC_AM;
bool eu = (segctl >> CP0SC_EU) & 1;
hwaddr pa = ((hwaddr)segctl & CP0SC_PA_MASK) << 20;
return get_seg_physical_address(env, physical, prot, real_address,
access_type, mmu_idx, am, eu, segmask,
pa & ~(hwaddr)segmask);
}
int get_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx)
{
/* User mode can only access useg/xuseg */
#if defined(TARGET_MIPS64)
int user_mode = mmu_idx == MIPS_HFLAG_UM;
int supervisor_mode = mmu_idx == MIPS_HFLAG_SM;
int kernel_mode = !user_mode && !supervisor_mode;
int UX = (env->CP0_Status & (1 << CP0St_UX)) != 0;
int SX = (env->CP0_Status & (1 << CP0St_SX)) != 0;
int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0;
#endif
int ret = TLBRET_MATCH;
/* effective address (modified for KVM T&E kernel segments) */
target_ulong address = real_address;
if (mips_um_ksegs_enabled()) {
/* KVM T&E adds guest kernel segments in useg */
if (real_address >= KVM_KSEG0_BASE) {
if (real_address < KVM_KSEG2_BASE) {
/* kseg0 */
address += KSEG0_BASE - KVM_KSEG0_BASE;
} else if (real_address <= USEG_LIMIT) {
/* kseg2/3 */
address += KSEG2_BASE - KVM_KSEG2_BASE;
}
}
}
if (address <= USEG_LIMIT) {
/* useg */
uint16_t segctl;
if (address >= 0x40000000UL) {
segctl = env->CP0_SegCtl2;
} else {
segctl = env->CP0_SegCtl2 >> 16;
}
ret = get_segctl_physical_address(env, physical, prot,
real_address, access_type,
mmu_idx, segctl, 0x3FFFFFFF);
#if defined(TARGET_MIPS64)
} else if (address < 0x4000000000000000ULL) {
/* xuseg */
if (UX && address <= (0x3FFFFFFFFFFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0x8000000000000000ULL) {
/* xsseg */
if ((supervisor_mode || kernel_mode) &&
SX && address <= (0x7FFFFFFFFFFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0xC000000000000000ULL) {
/* xkphys */
if ((address & 0x07FFFFFFFFFFFFFFULL) <= env->PAMask) {
/* KX/SX/UX bit to check for each xkphys EVA access mode */
static const uint8_t am_ksux[8] = {
[CP0SC_AM_UK] = (1u << CP0St_KX),
[CP0SC_AM_MK] = (1u << CP0St_KX),
[CP0SC_AM_MSK] = (1u << CP0St_SX),
[CP0SC_AM_MUSK] = (1u << CP0St_UX),
[CP0SC_AM_MUSUK] = (1u << CP0St_UX),
[CP0SC_AM_USK] = (1u << CP0St_SX),
[6] = (1u << CP0St_KX),
[CP0SC_AM_UUSK] = (1u << CP0St_UX),
};
unsigned int am = CP0SC_AM_UK;
unsigned int xr = (env->CP0_SegCtl2 & CP0SC2_XR_MASK) >> CP0SC2_XR;
if (xr & (1 << ((address >> 59) & 0x7))) {
am = (env->CP0_SegCtl1 & CP0SC1_XAM_MASK) >> CP0SC1_XAM;
}
/* Does CP0_Status.KX/SX/UX permit the access mode (am) */
if (env->CP0_Status & am_ksux[am]) {
ret = get_seg_physical_address(env, physical, prot,
real_address, access_type,
mmu_idx, am, false, env->PAMask,
0);
} else {
ret = TLBRET_BADADDR;
}
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0xFFFFFFFF80000000ULL) {
/* xkseg */
if (kernel_mode && KX &&
address <= (0xFFFFFFFF7FFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
#endif
} else if (address < KSEG1_BASE) {
/* kseg0 */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl1 >> 16, 0x1FFFFFFF);
} else if (address < KSEG2_BASE) {
/* kseg1 */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl1, 0x1FFFFFFF);
} else if (address < KSEG3_BASE) {
/* sseg (kseg2) */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl0 >> 16, 0x1FFFFFFF);
} else {
/*
* kseg3
* XXX: debug segment is not emulated
*/
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl0, 0x1FFFFFFF);
}
return ret;
}
hwaddr mips_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
hwaddr phys_addr;
int prot;
if (get_physical_address(env, &phys_addr, &prot, addr, MMU_DATA_LOAD,
cpu_mmu_index(env, false)) != 0) {
return -1;
}
return phys_addr;
}

0
target/mips/dsp_helper.c → target/mips/tcg/dsp_helper.c
View File

167
target/mips/tcg/exception.c Normal file
View File

@ -0,0 +1,167 @@
/*
* MIPS Exceptions processing helpers for QEMU.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
target_ulong exception_resume_pc(CPUMIPSState *env)
{
target_ulong bad_pc;
target_ulong isa_mode;
isa_mode = !!(env->hflags & MIPS_HFLAG_M16);
bad_pc = env->active_tc.PC | isa_mode;
if (env->hflags & MIPS_HFLAG_BMASK) {
/*
* If the exception was raised from a delay slot, come back to
* the jump.
*/
bad_pc -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
}
return bad_pc;
}
void helper_raise_exception_err(CPUMIPSState *env, uint32_t exception,
int error_code)
{
do_raise_exception_err(env, exception, error_code, 0);
}
void helper_raise_exception(CPUMIPSState *env, uint32_t exception)
{
do_raise_exception(env, exception, GETPC());
}
void helper_raise_exception_debug(CPUMIPSState *env)
{
do_raise_exception(env, EXCP_DEBUG, 0);
}
static void raise_exception(CPUMIPSState *env, uint32_t exception)
{
do_raise_exception(env, exception, 0);
}
void helper_wait(CPUMIPSState *env)
{
CPUState *cs = env_cpu(env);
cs->halted = 1;
cpu_reset_interrupt(cs, CPU_INTERRUPT_WAKE);
/*
* Last instruction in the block, PC was updated before
* - no need to recover PC and icount.
*/
raise_exception(env, EXCP_HLT);
}
void mips_cpu_synchronize_from_tb(CPUState *cs, const TranslationBlock *tb)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
env->active_tc.PC = tb->pc;
env->hflags &= ~MIPS_HFLAG_BMASK;
env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
}
bool mips_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{
if (interrupt_request & CPU_INTERRUPT_HARD) {
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
if (cpu_mips_hw_interrupts_enabled(env) &&
cpu_mips_hw_interrupts_pending(env)) {
/* Raise it */
cs->exception_index = EXCP_EXT_INTERRUPT;
env->error_code = 0;
mips_cpu_do_interrupt(cs);
return true;
}
}
return false;
}
static const char * const excp_names[EXCP_LAST + 1] = {
[EXCP_RESET] = "reset",
[EXCP_SRESET] = "soft reset",
[EXCP_DSS] = "debug single step",
[EXCP_DINT] = "debug interrupt",
[EXCP_NMI] = "non-maskable interrupt",
[EXCP_MCHECK] = "machine check",
[EXCP_EXT_INTERRUPT] = "interrupt",
[EXCP_DFWATCH] = "deferred watchpoint",
[EXCP_DIB] = "debug instruction breakpoint",
[EXCP_IWATCH] = "instruction fetch watchpoint",
[EXCP_AdEL] = "address error load",
[EXCP_AdES] = "address error store",
[EXCP_TLBF] = "TLB refill",
[EXCP_IBE] = "instruction bus error",
[EXCP_DBp] = "debug breakpoint",
[EXCP_SYSCALL] = "syscall",
[EXCP_BREAK] = "break",
[EXCP_CpU] = "coprocessor unusable",
[EXCP_RI] = "reserved instruction",
[EXCP_OVERFLOW] = "arithmetic overflow",
[EXCP_TRAP] = "trap",
[EXCP_FPE] = "floating point",
[EXCP_DDBS] = "debug data break store",
[EXCP_DWATCH] = "data watchpoint",
[EXCP_LTLBL] = "TLB modify",
[EXCP_TLBL] = "TLB load",
[EXCP_TLBS] = "TLB store",
[EXCP_DBE] = "data bus error",
[EXCP_DDBL] = "debug data break load",
[EXCP_THREAD] = "thread",
[EXCP_MDMX] = "MDMX",
[EXCP_C2E] = "precise coprocessor 2",
[EXCP_CACHE] = "cache error",
[EXCP_TLBXI] = "TLB execute-inhibit",
[EXCP_TLBRI] = "TLB read-inhibit",
[EXCP_MSADIS] = "MSA disabled",
[EXCP_MSAFPE] = "MSA floating point",
};
const char *mips_exception_name(int32_t exception)
{
if (exception < 0 || exception > EXCP_LAST) {
return "unknown";
}
return excp_names[exception];
}
void do_raise_exception_err(CPUMIPSState *env, uint32_t exception,
int error_code, uintptr_t pc)
{
CPUState *cs = env_cpu(env);
qemu_log_mask(CPU_LOG_INT, "%s: %d (%s) %d\n",
__func__, exception, mips_exception_name(exception),
error_code);
cs->exception_index = exception;
env->error_code = error_code;
cpu_loop_exit_restore(cs, pc);
}

8
target/mips/fpu_helper.c → target/mips/tcg/fpu_helper.c
View File

@ -38,14 +38,6 @@
#define FP_TO_INT32_OVERFLOW 0x7fffffff
#define FP_TO_INT64_OVERFLOW 0x7fffffffffffffffULL
/* convert MIPS rounding mode in FCR31 to IEEE library */
const FloatRoundMode ieee_rm[4] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down
};
target_ulong helper_cfc1(CPUMIPSState *env, uint32_t reg)
{
target_ulong arg1 = 0;

288
target/mips/tcg/ldst_helper.c Normal file
View File

@ -0,0 +1,288 @@
/*
* MIPS emulation load/store helpers for QEMU.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
#include "exec/memop.h"
#include "internal.h"
#ifndef CONFIG_USER_ONLY
#define HELPER_LD_ATOMIC(name, insn, almask, do_cast) \
target_ulong helper_##name(CPUMIPSState *env, target_ulong arg, int mem_idx) \
{ \
if (arg & almask) { \
if (!(env->hflags & MIPS_HFLAG_DM)) { \
env->CP0_BadVAddr = arg; \
} \
do_raise_exception(env, EXCP_AdEL, GETPC()); \
} \
env->CP0_LLAddr = cpu_mips_translate_address(env, arg, MMU_DATA_LOAD, \
GETPC()); \
env->lladdr = arg; \
env->llval = do_cast cpu_##insn##_mmuidx_ra(env, arg, mem_idx, GETPC()); \
return env->llval; \
}
HELPER_LD_ATOMIC(ll, ldl, 0x3, (target_long)(int32_t))
#ifdef TARGET_MIPS64
HELPER_LD_ATOMIC(lld, ldq, 0x7, (target_ulong))
#endif
#undef HELPER_LD_ATOMIC
#endif /* !CONFIG_USER_ONLY */
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK(v) ((v) & 3)
#define GET_OFFSET(addr, offset) (addr + (offset))
#else
#define GET_LMASK(v) (((v) & 3) ^ 3)
#define GET_OFFSET(addr, offset) (addr - (offset))
#endif
void helper_swl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
cpu_stb_mmuidx_ra(env, arg2, (uint8_t)(arg1 >> 24), mem_idx, GETPC());
if (GET_LMASK(arg2) <= 2) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 16),
mem_idx, GETPC());
}
if (GET_LMASK(arg2) <= 1) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 8),
mem_idx, GETPC());
}
if (GET_LMASK(arg2) == 0) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 3), (uint8_t)arg1,
mem_idx, GETPC());
}
}
void helper_swr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
cpu_stb_mmuidx_ra(env, arg2, (uint8_t)arg1, mem_idx, GETPC());
if (GET_LMASK(arg2) >= 1) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8),
mem_idx, GETPC());
}
if (GET_LMASK(arg2) >= 2) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16),
mem_idx, GETPC());
}
if (GET_LMASK(arg2) == 3) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24),
mem_idx, GETPC());
}
}
#if defined(TARGET_MIPS64)
/*
* "half" load and stores. We must do the memory access inline,
* or fault handling won't work.
*/
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK64(v) ((v) & 7)
#else
#define GET_LMASK64(v) (((v) & 7) ^ 7)
#endif
void helper_sdl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
cpu_stb_mmuidx_ra(env, arg2, (uint8_t)(arg1 >> 56), mem_idx, GETPC());
if (GET_LMASK64(arg2) <= 6) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 48),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 5) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 40),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 4) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 3), (uint8_t)(arg1 >> 32),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 3) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 4), (uint8_t)(arg1 >> 24),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 2) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 5), (uint8_t)(arg1 >> 16),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 1) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 6), (uint8_t)(arg1 >> 8),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) <= 0) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, 7), (uint8_t)arg1,
mem_idx, GETPC());
}
}
void helper_sdr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
cpu_stb_mmuidx_ra(env, arg2, (uint8_t)arg1, mem_idx, GETPC());
if (GET_LMASK64(arg2) >= 1) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) >= 2) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) >= 3) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) >= 4) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -4), (uint8_t)(arg1 >> 32),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) >= 5) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -5), (uint8_t)(arg1 >> 40),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) >= 6) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -6), (uint8_t)(arg1 >> 48),
mem_idx, GETPC());
}
if (GET_LMASK64(arg2) == 7) {
cpu_stb_mmuidx_ra(env, GET_OFFSET(arg2, -7), (uint8_t)(arg1 >> 56),
mem_idx, GETPC());
}
}
#endif /* TARGET_MIPS64 */
static const int multiple_regs[] = { 16, 17, 18, 19, 20, 21, 22, 23, 30 };
void helper_lwm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE(multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
env->active_tc.gpr[multiple_regs[i]] =
(target_long)cpu_ldl_mmuidx_ra(env, addr, mem_idx, GETPC());
addr += 4;
}
}
if (do_r31) {
env->active_tc.gpr[31] =
(target_long)cpu_ldl_mmuidx_ra(env, addr, mem_idx, GETPC());
}
}
void helper_swm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE(multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
cpu_stw_mmuidx_ra(env, addr, env->active_tc.gpr[multiple_regs[i]],
mem_idx, GETPC());
addr += 4;
}
}
if (do_r31) {
cpu_stw_mmuidx_ra(env, addr, env->active_tc.gpr[31], mem_idx, GETPC());
}
}
#if defined(TARGET_MIPS64)
void helper_ldm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE(multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
env->active_tc.gpr[multiple_regs[i]] =
cpu_ldq_mmuidx_ra(env, addr, mem_idx, GETPC());
addr += 8;
}
}
if (do_r31) {
env->active_tc.gpr[31] =
cpu_ldq_mmuidx_ra(env, addr, mem_idx, GETPC());
}
}
void helper_sdm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE(multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
cpu_stq_mmuidx_ra(env, addr, env->active_tc.gpr[multiple_regs[i]],
mem_idx, GETPC());
addr += 8;
}
}
if (do_r31) {
cpu_stq_mmuidx_ra(env, addr, env->active_tc.gpr[31], mem_idx, GETPC());
}
}
#endif /* TARGET_MIPS64 */

0
target/mips/lmmi_helper.c → target/mips/tcg/lmmi_helper.c
View File

35
target/mips/tcg/meson.build Normal file
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@ -0,0 +1,35 @@
gen = [
decodetree.process('mips32r6.decode', extra_args: '--static-decode=decode_mips32r6'),
decodetree.process('mips64r6.decode', extra_args: '--static-decode=decode_mips64r6'),
decodetree.process('msa32.decode', extra_args: '--static-decode=decode_msa32'),
decodetree.process('msa64.decode', extra_args: '--static-decode=decode_msa64'),
decodetree.process('tx79.decode', extra_args: '--static-decode=decode_tx79'),
]
mips_ss.add(gen)
mips_ss.add(files(
'dsp_helper.c',
'exception.c',
'fpu_helper.c',
'ldst_helper.c',
'lmmi_helper.c',
'msa_helper.c',
'msa_translate.c',
'op_helper.c',
'rel6_translate.c',
'translate.c',
'translate_addr_const.c',
'txx9_translate.c',
))
mips_ss.add(when: 'TARGET_MIPS64', if_true: files(
'tx79_translate.c',
), if_false: files(
'mxu_translate.c',
))
if have_user
subdir('user')
endif
if have_system
subdir('sysemu')
endif

0
target/mips/mips32r6.decode → target/mips/tcg/mips32r6.decode
View File

0
target/mips/mips64r6.decode → target/mips/tcg/mips64r6.decode
View File

0
target/mips/msa32.decode → target/mips/tcg/msa32.decode
View File

0
target/mips/msa64.decode → target/mips/tcg/msa64.decode
View File

36
target/mips/msa_helper.c → target/mips/tcg/msa_helper.c
View File

@ -8595,39 +8595,3 @@ void helper_msa_st_d(CPUMIPSState *env, uint32_t wd,
cpu_stq_data(env, addr + (1 << DF_DOUBLE), pwd->d[1]);
#endif
}
void msa_reset(CPUMIPSState *env)
{
if (!ase_msa_available(env)) {
return;
}
#ifdef CONFIG_USER_ONLY
/* MSA access enabled */
env->CP0_Config5 |= 1 << CP0C5_MSAEn;
env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR);
#endif
/*
* MSA CSR:
* - non-signaling floating point exception mode off (NX bit is 0)
* - Cause, Enables, and Flags are all 0
* - round to nearest / ties to even (RM bits are 0)
*/
env->active_tc.msacsr = 0;
restore_msa_fp_status(env);
/* tininess detected after rounding.*/
set_float_detect_tininess(float_tininess_after_rounding,
&env->active_tc.msa_fp_status);
/* clear float_status exception flags */
set_float_exception_flags(0, &env->active_tc.msa_fp_status);
/* clear float_status nan mode */
set_default_nan_mode(0, &env->active_tc.msa_fp_status);
/* set proper signanling bit meaning ("1" means "quiet") */
set_snan_bit_is_one(0, &env->active_tc.msa_fp_status);
}

0
target/mips/msa_helper.h.inc → target/mips/tcg/msa_helper.h.inc
View File

0
target/mips/msa_translate.c → target/mips/tcg/msa_translate.c
View File

0
target/mips/mxu_translate.c → target/mips/tcg/mxu_translate.c
View File

420
target/mips/tcg/op_helper.c Normal file
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@ -0,0 +1,420 @@
/*
* MIPS emulation helpers for qemu.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
#include "exec/memop.h"
#include "fpu_helper.h"
/* 64 bits arithmetic for 32 bits hosts */
static inline uint64_t get_HILO(CPUMIPSState *env)
{
return ((uint64_t)(env->active_tc.HI[0]) << 32) |
(uint32_t)env->active_tc.LO[0];
}
static inline target_ulong set_HIT0_LO(CPUMIPSState *env, uint64_t HILO)
{
env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
return env->active_tc.HI[0] = (int32_t)(HILO >> 32);
}
static inline target_ulong set_HI_LOT0(CPUMIPSState *env, uint64_t HILO)
{
target_ulong tmp = env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
/* Multiplication variants of the vr54xx. */
target_ulong helper_muls(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, 0 - ((int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2));
}
target_ulong helper_mulsu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, 0 - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_macc(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (int64_t)get_HILO(env) + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_macchi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)get_HILO(env) + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_maccu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (uint64_t)get_HILO(env) +
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_macchiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)get_HILO(env) +
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_msac(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (int64_t)get_HILO(env) - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msachi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)get_HILO(env) - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msacu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (uint64_t)get_HILO(env) -
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_msachiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)get_HILO(env) -
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulhi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
}
target_ulong helper_mulhiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulshi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, 0 - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_mulshiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, 0 - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
static inline target_ulong bitswap(target_ulong v)
{
v = ((v >> 1) & (target_ulong)0x5555555555555555ULL) |
((v & (target_ulong)0x5555555555555555ULL) << 1);
v = ((v >> 2) & (target_ulong)0x3333333333333333ULL) |
((v & (target_ulong)0x3333333333333333ULL) << 2);
v = ((v >> 4) & (target_ulong)0x0F0F0F0F0F0F0F0FULL) |
((v & (target_ulong)0x0F0F0F0F0F0F0F0FULL) << 4);
return v;
}
#ifdef TARGET_MIPS64
target_ulong helper_dbitswap(target_ulong rt)
{
return bitswap(rt);
}
#endif
target_ulong helper_bitswap(target_ulong rt)
{
return (int32_t)bitswap(rt);
}
target_ulong helper_rotx(target_ulong rs, uint32_t shift, uint32_t shiftx,
uint32_t stripe)
{
int i;
uint64_t tmp0 = ((uint64_t)rs) << 32 | ((uint64_t)rs & 0xffffffff);
uint64_t tmp1 = tmp0;
for (i = 0; i <= 46; i++) {
int s;
if (i & 0x8) {
s = shift;
} else {
s = shiftx;
}
if (stripe != 0 && !(i & 0x4)) {
s = ~s;
}
if (s & 0x10) {
if (tmp0 & (1LL << (i + 16))) {
tmp1 |= 1LL << i;
} else {
tmp1 &= ~(1LL << i);
}
}
}
uint64_t tmp2 = tmp1;
for (i = 0; i <= 38; i++) {
int s;
if (i & 0x4) {
s = shift;
} else {
s = shiftx;
}
if (s & 0x8) {
if (tmp1 & (1LL << (i + 8))) {
tmp2 |= 1LL << i;
} else {
tmp2 &= ~(1LL << i);
}
}
}
uint64_t tmp3 = tmp2;
for (i = 0; i <= 34; i++) {
int s;
if (i & 0x2) {
s = shift;
} else {
s = shiftx;
}
if (s & 0x4) {
if (tmp2 & (1LL << (i + 4))) {
tmp3 |= 1LL << i;
} else {
tmp3 &= ~(1LL << i);
}
}
}
uint64_t tmp4 = tmp3;
for (i = 0; i <= 32; i++) {
int s;
if (i & 0x1) {
s = shift;
} else {
s = shiftx;
}
if (s & 0x2) {
if (tmp3 & (1LL << (i + 2))) {
tmp4 |= 1LL << i;
} else {
tmp4 &= ~(1LL << i);
}
}
}
uint64_t tmp5 = tmp4;
for (i = 0; i <= 31; i++) {
int s;
s = shift;
if (s & 0x1) {
if (tmp4 & (1LL << (i + 1))) {
tmp5 |= 1LL << i;
} else {
tmp5 &= ~(1LL << i);
}
}
}
return (int64_t)(int32_t)(uint32_t)tmp5;
}
void helper_fork(target_ulong arg1, target_ulong arg2)
{
/*
* arg1 = rt, arg2 = rs
* TODO: store to TC register
*/
}
target_ulong helper_yield(CPUMIPSState *env, target_ulong arg)
{
target_long arg1 = arg;
if (arg1 < 0) {
/* No scheduling policy implemented. */
if (arg1 != -2) {
if (env->CP0_VPEControl & (1 << CP0VPECo_YSI) &&
env->active_tc.CP0_TCStatus & (1 << CP0TCSt_DT)) {
env->CP0_VPEControl &= ~(0x7 << CP0VPECo_EXCPT);
env->CP0_VPEControl |= 4 << CP0VPECo_EXCPT;
do_raise_exception(env, EXCP_THREAD, GETPC());
}
}
} else if (arg1 == 0) {
if (0) {
/* TODO: TC underflow */
env->CP0_VPEControl &= ~(0x7 << CP0VPECo_EXCPT);
do_raise_exception(env, EXCP_THREAD, GETPC());
} else {
/* TODO: Deallocate TC */
}
} else if (arg1 > 0) {
/* Yield qualifier inputs not implemented. */
env->CP0_VPEControl &= ~(0x7 << CP0VPECo_EXCPT);
env->CP0_VPEControl |= 2 << CP0VPECo_EXCPT;
do_raise_exception(env, EXCP_THREAD, GETPC());
}
return env->CP0_YQMask;
}
static inline void check_hwrena(CPUMIPSState *env, int reg, uintptr_t pc)
{
if ((env->hflags & MIPS_HFLAG_CP0) || (env->CP0_HWREna & (1 << reg))) {
return;
}
do_raise_exception(env, EXCP_RI, pc);
}
target_ulong helper_rdhwr_cpunum(CPUMIPSState *env)
{
check_hwrena(env, 0, GETPC());
return env->CP0_EBase & 0x3ff;
}
target_ulong helper_rdhwr_synci_step(CPUMIPSState *env)
{
check_hwrena(env, 1, GETPC());
return env->SYNCI_Step;
}
target_ulong helper_rdhwr_cc(CPUMIPSState *env)
{
check_hwrena(env, 2, GETPC());
#ifdef CONFIG_USER_ONLY
return env->CP0_Count;
#else
return (int32_t)cpu_mips_get_count(env);
#endif
}
target_ulong helper_rdhwr_ccres(CPUMIPSState *env)
{
check_hwrena(env, 3, GETPC());
return env->CCRes;
}
target_ulong helper_rdhwr_performance(CPUMIPSState *env)
{
check_hwrena(env, 4, GETPC());
return env->CP0_Performance0;
}
target_ulong helper_rdhwr_xnp(CPUMIPSState *env)
{
check_hwrena(env, 5, GETPC());
return (env->CP0_Config5 >> CP0C5_XNP) & 1;
}
void helper_pmon(CPUMIPSState *env, int function)
{
function /= 2;
switch (function) {
case 2: /* TODO: char inbyte(int waitflag); */
if (env->active_tc.gpr[4] == 0) {
env->active_tc.gpr[2] = -1;
}
/* Fall through */
case 11: /* TODO: char inbyte (void); */
env->active_tc.gpr[2] = -1;
break;
case 3:
case 12:
printf("%c", (char)(env->active_tc.gpr[4] & 0xFF));
break;
case 17:
break;
case 158:
{
unsigned char *fmt = (void *)(uintptr_t)env->active_tc.gpr[4];
printf("%s", fmt);
}
break;
}
}
#if !defined(CONFIG_USER_ONLY)
void mips_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
int error_code = 0;
int excp;
if (!(env->hflags & MIPS_HFLAG_DM)) {
env->CP0_BadVAddr = addr;
}
if (access_type == MMU_DATA_STORE) {
excp = EXCP_AdES;
} else {
excp = EXCP_AdEL;
if (access_type == MMU_INST_FETCH) {
error_code |= EXCP_INST_NOTAVAIL;
}
}
do_raise_exception_err(env, excp, error_code, retaddr);
}
void mips_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
vaddr addr, unsigned size,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
if (access_type == MMU_INST_FETCH) {
do_raise_exception(env, EXCP_IBE, retaddr);
} else {
do_raise_exception(env, EXCP_DBE, retaddr);
}
}
#endif /* !CONFIG_USER_ONLY */

0
target/mips/rel6_translate.c → target/mips/tcg/rel6_translate.c
View File

0
target/mips/cp0_helper.c → target/mips/tcg/sysemu/cp0_helper.c
View File

6
target/mips/tcg/sysemu/meson.build Normal file
View File

@ -0,0 +1,6 @@
mips_softmmu_ss.add(files(
'cp0_helper.c',
'mips-semi.c',
'special_helper.c',
'tlb_helper.c',
))

0
target/mips/mips-semi.c → target/mips/tcg/sysemu/mips-semi.c
View File

173
target/mips/tcg/sysemu/special_helper.c Normal file
View File

@ -0,0 +1,173 @@
/*
* QEMU MIPS emulation: Special opcode helpers
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
#include "internal.h"
/* Specials */
target_ulong helper_di(CPUMIPSState *env)
{
target_ulong t0 = env->CP0_Status;
env->CP0_Status = t0 & ~(1 << CP0St_IE);
return t0;
}
target_ulong helper_ei(CPUMIPSState *env)
{
target_ulong t0 = env->CP0_Status;
env->CP0_Status = t0 | (1 << CP0St_IE);
return t0;
}
static void debug_pre_eret(CPUMIPSState *env)
{
if (qemu_loglevel_mask(CPU_LOG_EXEC)) {
qemu_log("ERET: PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx,
env->active_tc.PC, env->CP0_EPC);
if (env->CP0_Status & (1 << CP0St_ERL)) {
qemu_log(" ErrorEPC " TARGET_FMT_lx, env->CP0_ErrorEPC);
}
if (env->hflags & MIPS_HFLAG_DM) {
qemu_log(" DEPC " TARGET_FMT_lx, env->CP0_DEPC);
}
qemu_log("\n");
}
}
static void debug_post_eret(CPUMIPSState *env)
{
if (qemu_loglevel_mask(CPU_LOG_EXEC)) {
qemu_log(" => PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx,
env->active_tc.PC, env->CP0_EPC);
if (env->CP0_Status & (1 << CP0St_ERL)) {
qemu_log(" ErrorEPC " TARGET_FMT_lx, env->CP0_ErrorEPC);
}
if (env->hflags & MIPS_HFLAG_DM) {
qemu_log(" DEPC " TARGET_FMT_lx, env->CP0_DEPC);
}
switch (cpu_mmu_index(env, false)) {
case 3:
qemu_log(", ERL\n");
break;
case MIPS_HFLAG_UM:
qemu_log(", UM\n");
break;
case MIPS_HFLAG_SM:
qemu_log(", SM\n");
break;
case MIPS_HFLAG_KM:
qemu_log("\n");
break;
default:
cpu_abort(env_cpu(env), "Invalid MMU mode!\n");
break;
}
}
}
bool mips_io_recompile_replay_branch(CPUState *cs, const TranslationBlock *tb)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
if ((env->hflags & MIPS_HFLAG_BMASK) != 0
&& env->active_tc.PC != tb->pc) {
env->active_tc.PC -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
env->hflags &= ~MIPS_HFLAG_BMASK;
return true;
}
return false;
}
static inline void exception_return(CPUMIPSState *env)
{
debug_pre_eret(env);
if (env->CP0_Status & (1 << CP0St_ERL)) {
mips_env_set_pc(env, env->CP0_ErrorEPC);
env->CP0_Status &= ~(1 << CP0St_ERL);
} else {
mips_env_set_pc(env, env->CP0_EPC);
env->CP0_Status &= ~(1 << CP0St_EXL);
}
compute_hflags(env);
debug_post_eret(env);
}
void helper_eret(CPUMIPSState *env)
{
exception_return(env);
env->CP0_LLAddr = 1;
env->lladdr = 1;
}
void helper_eretnc(CPUMIPSState *env)
{
exception_return(env);
}
void helper_deret(CPUMIPSState *env)
{
debug_pre_eret(env);
env->hflags &= ~MIPS_HFLAG_DM;
compute_hflags(env);
mips_env_set_pc(env, env->CP0_DEPC);
debug_post_eret(env);
}
void helper_cache(CPUMIPSState *env, target_ulong addr, uint32_t op)
{
static const char *const type_name[] = {
"Primary Instruction",
"Primary Data or Unified Primary",
"Tertiary",
"Secondary"
};
uint32_t cache_type = extract32(op, 0, 2);
uint32_t cache_operation = extract32(op, 2, 3);
target_ulong index = addr & 0x1fffffff;
switch (cache_operation) {
case 0b010: /* Index Store Tag */
memory_region_dispatch_write(env->itc_tag, index, env->CP0_TagLo,
MO_64, MEMTXATTRS_UNSPECIFIED);
break;
case 0b001: /* Index Load Tag */
memory_region_dispatch_read(env->itc_tag, index, &env->CP0_TagLo,
MO_64, MEMTXATTRS_UNSPECIFIED);
break;
case 0b000: /* Index Invalidate */
case 0b100: /* Hit Invalidate */
case 0b110: /* Hit Writeback */
/* no-op */
break;
default:
qemu_log_mask(LOG_UNIMP, "cache operation:%u (type: %s cache)\n",
cache_operation, type_name[cache_type]);
break;
}
}

623
target/mips/tlb_helper.c → target/mips/tcg/sysemu/tlb_helper.c
View File

@ -24,22 +24,341 @@
#include "exec/cpu_ldst.h"
#include "exec/log.h"
#include "hw/mips/cpudevs.h"
#include "exec/helper-proto.h"
enum {
TLBRET_XI = -6,
TLBRET_RI = -5,
TLBRET_DIRTY = -4,
TLBRET_INVALID = -3,
TLBRET_NOMATCH = -2,
TLBRET_BADADDR = -1,
TLBRET_MATCH = 0
};
/* TLB management */
static void r4k_mips_tlb_flush_extra(CPUMIPSState *env, int first)
{
/* Discard entries from env->tlb[first] onwards. */
while (env->tlb->tlb_in_use > first) {
r4k_invalidate_tlb(env, --env->tlb->tlb_in_use, 0);
}
}
#if !defined(CONFIG_USER_ONLY)
static inline uint64_t get_tlb_pfn_from_entrylo(uint64_t entrylo)
{
#if defined(TARGET_MIPS64)
return extract64(entrylo, 6, 54);
#else
return extract64(entrylo, 6, 24) | /* PFN */
(extract64(entrylo, 32, 32) << 24); /* PFNX */
#endif
}
static void r4k_fill_tlb(CPUMIPSState *env, int idx)
{
r4k_tlb_t *tlb;
uint64_t mask = env->CP0_PageMask >> (TARGET_PAGE_BITS + 1);
/* XXX: detect conflicting TLBs and raise a MCHECK exception when needed */
tlb = &env->tlb->mmu.r4k.tlb[idx];
if (env->CP0_EntryHi & (1 << CP0EnHi_EHINV)) {
tlb->EHINV = 1;
return;
}
tlb->EHINV = 0;
tlb->VPN = env->CP0_EntryHi & (TARGET_PAGE_MASK << 1);
#if defined(TARGET_MIPS64)
tlb->VPN &= env->SEGMask;
#endif
tlb->ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
tlb->MMID = env->CP0_MemoryMapID;
tlb->PageMask = env->CP0_PageMask;
tlb->G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
tlb->V0 = (env->CP0_EntryLo0 & 2) != 0;
tlb->D0 = (env->CP0_EntryLo0 & 4) != 0;
tlb->C0 = (env->CP0_EntryLo0 >> 3) & 0x7;
tlb->XI0 = (env->CP0_EntryLo0 >> CP0EnLo_XI) & 1;
tlb->RI0 = (env->CP0_EntryLo0 >> CP0EnLo_RI) & 1;
tlb->PFN[0] = (get_tlb_pfn_from_entrylo(env->CP0_EntryLo0) & ~mask) << 12;
tlb->V1 = (env->CP0_EntryLo1 & 2) != 0;
tlb->D1 = (env->CP0_EntryLo1 & 4) != 0;
tlb->C1 = (env->CP0_EntryLo1 >> 3) & 0x7;
tlb->XI1 = (env->CP0_EntryLo1 >> CP0EnLo_XI) & 1;
tlb->RI1 = (env->CP0_EntryLo1 >> CP0EnLo_RI) & 1;
tlb->PFN[1] = (get_tlb_pfn_from_entrylo(env->CP0_EntryLo1) & ~mask) << 12;
}
static void r4k_helper_tlbinv(CPUMIPSState *env)
{
bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
uint32_t MMID = env->CP0_MemoryMapID;
uint32_t tlb_mmid;
r4k_tlb_t *tlb;
int idx;
MMID = mi ? MMID : (uint32_t) ASID;
for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
tlb = &env->tlb->mmu.r4k.tlb[idx];
tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
if (!tlb->G && tlb_mmid == MMID) {
tlb->EHINV = 1;
}
}
cpu_mips_tlb_flush(env);
}
static void r4k_helper_tlbinvf(CPUMIPSState *env)
{
int idx;
for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
env->tlb->mmu.r4k.tlb[idx].EHINV = 1;
}
cpu_mips_tlb_flush(env);
}
static void r4k_helper_tlbwi(CPUMIPSState *env)
{
bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
target_ulong VPN;
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
uint32_t MMID = env->CP0_MemoryMapID;
uint32_t tlb_mmid;
bool EHINV, G, V0, D0, V1, D1, XI0, XI1, RI0, RI1;
r4k_tlb_t *tlb;
int idx;
MMID = mi ? MMID : (uint32_t) ASID;
idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
tlb = &env->tlb->mmu.r4k.tlb[idx];
VPN = env->CP0_EntryHi & (TARGET_PAGE_MASK << 1);
#if defined(TARGET_MIPS64)
VPN &= env->SEGMask;
#endif
EHINV = (env->CP0_EntryHi & (1 << CP0EnHi_EHINV)) != 0;
G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
V0 = (env->CP0_EntryLo0 & 2) != 0;
D0 = (env->CP0_EntryLo0 & 4) != 0;
XI0 = (env->CP0_EntryLo0 >> CP0EnLo_XI) &1;
RI0 = (env->CP0_EntryLo0 >> CP0EnLo_RI) &1;
V1 = (env->CP0_EntryLo1 & 2) != 0;
D1 = (env->CP0_EntryLo1 & 4) != 0;
XI1 = (env->CP0_EntryLo1 >> CP0EnLo_XI) &1;
RI1 = (env->CP0_EntryLo1 >> CP0EnLo_RI) &1;
tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
/*
* Discard cached TLB entries, unless tlbwi is just upgrading access
* permissions on the current entry.
*/
if (tlb->VPN != VPN || tlb_mmid != MMID || tlb->G != G ||
(!tlb->EHINV && EHINV) ||
(tlb->V0 && !V0) || (tlb->D0 && !D0) ||
(!tlb->XI0 && XI0) || (!tlb->RI0 && RI0) ||
(tlb->V1 && !V1) || (tlb->D1 && !D1) ||
(!tlb->XI1 && XI1) || (!tlb->RI1 && RI1)) {
r4k_mips_tlb_flush_extra(env, env->tlb->nb_tlb);
}
r4k_invalidate_tlb(env, idx, 0);
r4k_fill_tlb(env, idx);
}
static void r4k_helper_tlbwr(CPUMIPSState *env)
{
int r = cpu_mips_get_random(env);
r4k_invalidate_tlb(env, r, 1);
r4k_fill_tlb(env, r);
}
static void r4k_helper_tlbp(CPUMIPSState *env)
{
bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
r4k_tlb_t *tlb;
target_ulong mask;
target_ulong tag;
target_ulong VPN;
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
uint32_t MMID = env->CP0_MemoryMapID;
uint32_t tlb_mmid;
int i;
MMID = mi ? MMID : (uint32_t) ASID;
for (i = 0; i < env->tlb->nb_tlb; i++) {
tlb = &env->tlb->mmu.r4k.tlb[i];
/* 1k pages are not supported. */
mask = tlb->PageMask | ~(TARGET_PAGE_MASK << 1);
tag = env->CP0_EntryHi & ~mask;
VPN = tlb->VPN & ~mask;
#if defined(TARGET_MIPS64)
tag &= env->SEGMask;
#endif
tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
/* Check ASID/MMID, virtual page number & size */
if ((tlb->G == 1 || tlb_mmid == MMID) && VPN == tag && !tlb->EHINV) {
/* TLB match */
env->CP0_Index = i;
break;
}
}
if (i == env->tlb->nb_tlb) {
/* No match. Discard any shadow entries, if any of them match. */
for (i = env->tlb->nb_tlb; i < env->tlb->tlb_in_use; i++) {
tlb = &env->tlb->mmu.r4k.tlb[i];
/* 1k pages are not supported. */
mask = tlb->PageMask | ~(TARGET_PAGE_MASK << 1);
tag = env->CP0_EntryHi & ~mask;
VPN = tlb->VPN & ~mask;
#if defined(TARGET_MIPS64)
tag &= env->SEGMask;
#endif
tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
/* Check ASID/MMID, virtual page number & size */
if ((tlb->G == 1 || tlb_mmid == MMID) && VPN == tag) {
r4k_mips_tlb_flush_extra(env, i);
break;
}
}
env->CP0_Index |= 0x80000000;
}
}
static inline uint64_t get_entrylo_pfn_from_tlb(uint64_t tlb_pfn)
{
#if defined(TARGET_MIPS64)
return tlb_pfn << 6;
#else
return (extract64(tlb_pfn, 0, 24) << 6) | /* PFN */
(extract64(tlb_pfn, 24, 32) << 32); /* PFNX */
#endif
}
static void r4k_helper_tlbr(CPUMIPSState *env)
{
bool mi = !!((env->CP0_Config5 >> CP0C5_MI) & 1);
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
uint32_t MMID = env->CP0_MemoryMapID;
uint32_t tlb_mmid;
r4k_tlb_t *tlb;
int idx;
MMID = mi ? MMID : (uint32_t) ASID;
idx = (env->CP0_Index & ~0x80000000) % env->tlb->nb_tlb;
tlb = &env->tlb->mmu.r4k.tlb[idx];
tlb_mmid = mi ? tlb->MMID : (uint32_t) tlb->ASID;
/* If this will change the current ASID/MMID, flush qemu's TLB. */
if (MMID != tlb_mmid) {
cpu_mips_tlb_flush(env);
}
r4k_mips_tlb_flush_extra(env, env->tlb->nb_tlb);
if (tlb->EHINV) {
env->CP0_EntryHi = 1 << CP0EnHi_EHINV;
env->CP0_PageMask = 0;
env->CP0_EntryLo0 = 0;
env->CP0_EntryLo1 = 0;
} else {
env->CP0_EntryHi = mi ? tlb->VPN : tlb->VPN | tlb->ASID;
env->CP0_MemoryMapID = tlb->MMID;
env->CP0_PageMask = tlb->PageMask;
env->CP0_EntryLo0 = tlb->G | (tlb->V0 << 1) | (tlb->D0 << 2) |
((uint64_t)tlb->RI0 << CP0EnLo_RI) |
((uint64_t)tlb->XI0 << CP0EnLo_XI) | (tlb->C0 << 3) |
get_entrylo_pfn_from_tlb(tlb->PFN[0] >> 12);
env->CP0_EntryLo1 = tlb->G | (tlb->V1 << 1) | (tlb->D1 << 2) |
((uint64_t)tlb->RI1 << CP0EnLo_RI) |
((uint64_t)tlb->XI1 << CP0EnLo_XI) | (tlb->C1 << 3) |
get_entrylo_pfn_from_tlb(tlb->PFN[1] >> 12);
}
}
void helper_tlbwi(CPUMIPSState *env)
{
env->tlb->helper_tlbwi(env);
}
void helper_tlbwr(CPUMIPSState *env)
{
env->tlb->helper_tlbwr(env);
}
void helper_tlbp(CPUMIPSState *env)
{
env->tlb->helper_tlbp(env);
}
void helper_tlbr(CPUMIPSState *env)
{
env->tlb->helper_tlbr(env);
}
void helper_tlbinv(CPUMIPSState *env)
{
env->tlb->helper_tlbinv(env);
}
void helper_tlbinvf(CPUMIPSState *env)
{
env->tlb->helper_tlbinvf(env);
}
static void global_invalidate_tlb(CPUMIPSState *env,
uint32_t invMsgVPN2,
uint8_t invMsgR,
uint32_t invMsgMMid,
bool invAll,
bool invVAMMid,
bool invMMid,
bool invVA)
{
int idx;
r4k_tlb_t *tlb;
bool VAMatch;
bool MMidMatch;
for (idx = 0; idx < env->tlb->nb_tlb; idx++) {
tlb = &env->tlb->mmu.r4k.tlb[idx];
VAMatch =
(((tlb->VPN & ~tlb->PageMask) == (invMsgVPN2 & ~tlb->PageMask))
#ifdef TARGET_MIPS64
&&
(extract64(env->CP0_EntryHi, 62, 2) == invMsgR)
#endif
);
MMidMatch = tlb->MMID == invMsgMMid;
if ((invAll && (idx > env->CP0_Wired)) ||
(VAMatch && invVAMMid && (tlb->G || MMidMatch)) ||
(VAMatch && invVA) ||
(MMidMatch && !(tlb->G) && invMMid)) {
tlb->EHINV = 1;
}
}
cpu_mips_tlb_flush(env);
}
void helper_ginvt(CPUMIPSState *env, target_ulong arg, uint32_t type)
{
bool invAll = type == 0;
bool invVA = type == 1;
bool invMMid = type == 2;
bool invVAMMid = type == 3;
uint32_t invMsgVPN2 = arg & (TARGET_PAGE_MASK << 1);
uint8_t invMsgR = 0;
uint32_t invMsgMMid = env->CP0_MemoryMapID;
CPUState *other_cs = first_cpu;
#ifdef TARGET_MIPS64
invMsgR = extract64(arg, 62, 2);
#endif
CPU_FOREACH(other_cs) {
MIPSCPU *other_cpu = MIPS_CPU(other_cs);
global_invalidate_tlb(&other_cpu->env, invMsgVPN2, invMsgR, invMsgMMid,
invAll, invVAMMid, invMMid, invVA);
}
}
/* no MMU emulation */
int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type)
static int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type)
{
*physical = address;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@ -47,8 +366,9 @@ int no_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
}
/* fixed mapping MMU emulation */
int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type)
static int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong address,
MMUAccessType access_type)
{
if (address <= (int32_t)0x7FFFFFFFUL) {
if (!(env->CP0_Status & (1 << CP0St_ERL))) {
@ -67,8 +387,8 @@ int fixed_mmu_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
}
/* MIPS32/MIPS64 R4000-style MMU emulation */
int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type)
static int r4k_map_address(CPUMIPSState *env, hwaddr *physical, int *prot,
target_ulong address, MMUAccessType access_type)
{
uint16_t ASID = env->CP0_EntryHi & env->CP0_EntryHi_ASID_mask;
uint32_t MMID = env->CP0_MemoryMapID;
@ -166,236 +486,6 @@ void mmu_init(CPUMIPSState *env, const mips_def_t *def)
}
}
static int is_seg_am_mapped(unsigned int am, bool eu, int mmu_idx)
{
/*
* Interpret access control mode and mmu_idx.
* AdE? TLB?
* AM K S U E K S U E
* UK 0 0 1 1 0 0 - - 0
* MK 1 0 1 1 0 1 - - !eu
* MSK 2 0 0 1 0 1 1 - !eu
* MUSK 3 0 0 0 0 1 1 1 !eu
* MUSUK 4 0 0 0 0 0 1 1 0
* USK 5 0 0 1 0 0 0 - 0
* - 6 - - - - - - - -
* UUSK 7 0 0 0 0 0 0 0 0
*/
int32_t adetlb_mask;
switch (mmu_idx) {
case 3: /* ERL */
/* If EU is set, always unmapped */
if (eu) {
return 0;
}
/* fall through */
case MIPS_HFLAG_KM:
/* Never AdE, TLB mapped if AM={1,2,3} */
adetlb_mask = 0x70000000;
goto check_tlb;
case MIPS_HFLAG_SM:
/* AdE if AM={0,1}, TLB mapped if AM={2,3,4} */
adetlb_mask = 0xc0380000;
goto check_ade;
case MIPS_HFLAG_UM:
/* AdE if AM={0,1,2,5}, TLB mapped if AM={3,4} */
adetlb_mask = 0xe4180000;
/* fall through */
check_ade:
/* does this AM cause AdE in current execution mode */
if ((adetlb_mask << am) < 0) {
return TLBRET_BADADDR;
}
adetlb_mask <<= 8;
/* fall through */
check_tlb:
/* is this AM mapped in current execution mode */
return ((adetlb_mask << am) < 0);
default:
assert(0);
return TLBRET_BADADDR;
};
}
static int get_seg_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx,
unsigned int am, bool eu,
target_ulong segmask,
hwaddr physical_base)
{
int mapped = is_seg_am_mapped(am, eu, mmu_idx);
if (mapped < 0) {
/* is_seg_am_mapped can report TLBRET_BADADDR */
return mapped;
} else if (mapped) {
/* The segment is TLB mapped */
return env->tlb->map_address(env, physical, prot, real_address,
access_type);
} else {
/* The segment is unmapped */
*physical = physical_base | (real_address & segmask);
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return TLBRET_MATCH;
}
}
static int get_segctl_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx,
uint16_t segctl, target_ulong segmask)
{
unsigned int am = (segctl & CP0SC_AM_MASK) >> CP0SC_AM;
bool eu = (segctl >> CP0SC_EU) & 1;
hwaddr pa = ((hwaddr)segctl & CP0SC_PA_MASK) << 20;
return get_seg_physical_address(env, physical, prot, real_address,
access_type, mmu_idx, am, eu, segmask,
pa & ~(hwaddr)segmask);
}
static int get_physical_address(CPUMIPSState *env, hwaddr *physical,
int *prot, target_ulong real_address,
MMUAccessType access_type, int mmu_idx)
{
/* User mode can only access useg/xuseg */
#if defined(TARGET_MIPS64)
int user_mode = mmu_idx == MIPS_HFLAG_UM;
int supervisor_mode = mmu_idx == MIPS_HFLAG_SM;
int kernel_mode = !user_mode && !supervisor_mode;
int UX = (env->CP0_Status & (1 << CP0St_UX)) != 0;
int SX = (env->CP0_Status & (1 << CP0St_SX)) != 0;
int KX = (env->CP0_Status & (1 << CP0St_KX)) != 0;
#endif
int ret = TLBRET_MATCH;
/* effective address (modified for KVM T&E kernel segments) */
target_ulong address = real_address;
#define USEG_LIMIT ((target_ulong)(int32_t)0x7FFFFFFFUL)
#define KSEG0_BASE ((target_ulong)(int32_t)0x80000000UL)
#define KSEG1_BASE ((target_ulong)(int32_t)0xA0000000UL)
#define KSEG2_BASE ((target_ulong)(int32_t)0xC0000000UL)
#define KSEG3_BASE ((target_ulong)(int32_t)0xE0000000UL)
#define KVM_KSEG0_BASE ((target_ulong)(int32_t)0x40000000UL)
#define KVM_KSEG2_BASE ((target_ulong)(int32_t)0x60000000UL)
if (mips_um_ksegs_enabled()) {
/* KVM T&E adds guest kernel segments in useg */
if (real_address >= KVM_KSEG0_BASE) {
if (real_address < KVM_KSEG2_BASE) {
/* kseg0 */
address += KSEG0_BASE - KVM_KSEG0_BASE;
} else if (real_address <= USEG_LIMIT) {
/* kseg2/3 */
address += KSEG2_BASE - KVM_KSEG2_BASE;
}
}
}
if (address <= USEG_LIMIT) {
/* useg */
uint16_t segctl;
if (address >= 0x40000000UL) {
segctl = env->CP0_SegCtl2;
} else {
segctl = env->CP0_SegCtl2 >> 16;
}
ret = get_segctl_physical_address(env, physical, prot,
real_address, access_type,
mmu_idx, segctl, 0x3FFFFFFF);
#if defined(TARGET_MIPS64)
} else if (address < 0x4000000000000000ULL) {
/* xuseg */
if (UX && address <= (0x3FFFFFFFFFFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0x8000000000000000ULL) {
/* xsseg */
if ((supervisor_mode || kernel_mode) &&
SX && address <= (0x7FFFFFFFFFFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0xC000000000000000ULL) {
/* xkphys */
if ((address & 0x07FFFFFFFFFFFFFFULL) <= env->PAMask) {
/* KX/SX/UX bit to check for each xkphys EVA access mode */
static const uint8_t am_ksux[8] = {
[CP0SC_AM_UK] = (1u << CP0St_KX),
[CP0SC_AM_MK] = (1u << CP0St_KX),
[CP0SC_AM_MSK] = (1u << CP0St_SX),
[CP0SC_AM_MUSK] = (1u << CP0St_UX),
[CP0SC_AM_MUSUK] = (1u << CP0St_UX),
[CP0SC_AM_USK] = (1u << CP0St_SX),
[6] = (1u << CP0St_KX),
[CP0SC_AM_UUSK] = (1u << CP0St_UX),
};
unsigned int am = CP0SC_AM_UK;
unsigned int xr = (env->CP0_SegCtl2 & CP0SC2_XR_MASK) >> CP0SC2_XR;
if (xr & (1 << ((address >> 59) & 0x7))) {
am = (env->CP0_SegCtl1 & CP0SC1_XAM_MASK) >> CP0SC1_XAM;
}
/* Does CP0_Status.KX/SX/UX permit the access mode (am) */
if (env->CP0_Status & am_ksux[am]) {
ret = get_seg_physical_address(env, physical, prot,
real_address, access_type,
mmu_idx, am, false, env->PAMask,
0);
} else {
ret = TLBRET_BADADDR;
}
} else {
ret = TLBRET_BADADDR;
}
} else if (address < 0xFFFFFFFF80000000ULL) {
/* xkseg */
if (kernel_mode && KX &&
address <= (0xFFFFFFFF7FFFFFFFULL & env->SEGMask)) {
ret = env->tlb->map_address(env, physical, prot,
real_address, access_type);
} else {
ret = TLBRET_BADADDR;
}
#endif
} else if (address < KSEG1_BASE) {
/* kseg0 */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl1 >> 16, 0x1FFFFFFF);
} else if (address < KSEG2_BASE) {
/* kseg1 */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl1, 0x1FFFFFFF);
} else if (address < KSEG3_BASE) {
/* sseg (kseg2) */
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl0 >> 16, 0x1FFFFFFF);
} else {
/*
* kseg3
* XXX: debug segment is not emulated
*/
ret = get_segctl_physical_address(env, physical, prot, real_address,
access_type, mmu_idx,
env->CP0_SegCtl0, 0x1FFFFFFF);
}
return ret;
}
void cpu_mips_tlb_flush(CPUMIPSState *env)
{
/* Flush qemu's TLB and discard all shadowed entries. */
@ -403,8 +493,6 @@ void cpu_mips_tlb_flush(CPUMIPSState *env)
env->tlb->tlb_in_use = env->tlb->nb_tlb;
}
#endif /* !CONFIG_USER_ONLY */
static void raise_mmu_exception(CPUMIPSState *env, target_ulong address,
MMUAccessType access_type, int tlb_error)
{
@ -484,22 +572,6 @@ static void raise_mmu_exception(CPUMIPSState *env, target_ulong address,
env->error_code = error_code;
}
#if !defined(CONFIG_USER_ONLY)
hwaddr mips_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
hwaddr phys_addr;
int prot;
if (get_physical_address(env, &phys_addr, &prot, addr, MMU_DATA_LOAD,
cpu_mmu_index(env, false)) != 0) {
return -1;
}
return phys_addr;
}
#if !defined(TARGET_MIPS64)
/*
@ -833,7 +905,6 @@ refill:
return true;
}
#endif
#endif /* !CONFIG_USER_ONLY */
bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
@ -841,14 +912,11 @@ bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
#if !defined(CONFIG_USER_ONLY)
hwaddr physical;
int prot;
#endif
int ret = TLBRET_BADADDR;
/* data access */
#if !defined(CONFIG_USER_ONLY)
/* XXX: put correct access by using cpu_restore_state() correctly */
ret = get_physical_address(env, &physical, &prot, address,
access_type, mmu_idx);
@ -896,29 +964,28 @@ bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
if (probe) {
return false;
}
#endif
raise_mmu_exception(env, address, access_type, ret);
do_raise_exception_err(env, cs->exception_index, env->error_code, retaddr);
}
#ifndef CONFIG_USER_ONLY
hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address,
MMUAccessType access_type)
MMUAccessType access_type, uintptr_t retaddr)
{
hwaddr physical;
int prot;
int ret = 0;
CPUState *cs = env_cpu(env);
/* data access */
ret = get_physical_address(env, &physical, &prot, address, access_type,
cpu_mmu_index(env, false));
if (ret != TLBRET_MATCH) {
raise_mmu_exception(env, address, access_type, ret);
return -1LL;
} else {
if (ret == TLBRET_MATCH) {
return physical;
}
raise_mmu_exception(env, address, access_type, ret);
cpu_loop_exit_restore(cs, retaddr);
}
static void set_hflags_for_handler(CPUMIPSState *env)
@ -964,11 +1031,8 @@ static inline void set_badinstr_registers(CPUMIPSState *env)
}
}
#endif /* !CONFIG_USER_ONLY */
void mips_cpu_do_interrupt(CPUState *cs)
{
#if !defined(CONFIG_USER_ONLY)
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
bool update_badinstr = 0;
@ -1271,11 +1335,9 @@ void mips_cpu_do_interrupt(CPUState *cs)
env->CP0_Status, env->CP0_Cause, env->CP0_BadVAddr,
env->CP0_DEPC);
}
#endif
cs->exception_index = EXCP_NONE;
}
#if !defined(CONFIG_USER_ONLY)
void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra)
{
CPUState *cs = env_cpu(env);
@ -1340,4 +1402,3 @@ void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra)
}
}
}
#endif /* !CONFIG_USER_ONLY */

185
target/mips/tcg/sysemu_helper.h.inc Normal file
View File

@ -0,0 +1,185 @@
/*
* QEMU MIPS sysemu helpers
*
* Copyright (c) 2004-2005 Jocelyn Mayer
* Copyright (c) 2006 Marius Groeger (FPU operations)
* Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support)
* Copyright (c) 2009 CodeSourcery (MIPS16 and microMIPS support)
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
DEF_HELPER_1(do_semihosting, void, env)
/* CP0 helpers */
DEF_HELPER_1(mfc0_mvpcontrol, tl, env)
DEF_HELPER_1(mfc0_mvpconf0, tl, env)
DEF_HELPER_1(mfc0_mvpconf1, tl, env)
DEF_HELPER_1(mftc0_vpecontrol, tl, env)
DEF_HELPER_1(mftc0_vpeconf0, tl, env)
DEF_HELPER_1(mfc0_random, tl, env)
DEF_HELPER_1(mfc0_tcstatus, tl, env)
DEF_HELPER_1(mftc0_tcstatus, tl, env)
DEF_HELPER_1(mfc0_tcbind, tl, env)
DEF_HELPER_1(mftc0_tcbind, tl, env)
DEF_HELPER_1(mfc0_tcrestart, tl, env)
DEF_HELPER_1(mftc0_tcrestart, tl, env)
DEF_HELPER_1(mfc0_tchalt, tl, env)
DEF_HELPER_1(mftc0_tchalt, tl, env)
DEF_HELPER_1(mfc0_tccontext, tl, env)
DEF_HELPER_1(mftc0_tccontext, tl, env)
DEF_HELPER_1(mfc0_tcschedule, tl, env)
DEF_HELPER_1(mftc0_tcschedule, tl, env)
DEF_HELPER_1(mfc0_tcschefback, tl, env)
DEF_HELPER_1(mftc0_tcschefback, tl, env)
DEF_HELPER_1(mfc0_count, tl, env)
DEF_HELPER_1(mfc0_saar, tl, env)
DEF_HELPER_1(mfhc0_saar, tl, env)
DEF_HELPER_1(mftc0_entryhi, tl, env)
DEF_HELPER_1(mftc0_status, tl, env)
DEF_HELPER_1(mftc0_cause, tl, env)
DEF_HELPER_1(mftc0_epc, tl, env)
DEF_HELPER_1(mftc0_ebase, tl, env)
DEF_HELPER_2(mftc0_configx, tl, env, tl)
DEF_HELPER_1(mfc0_lladdr, tl, env)
DEF_HELPER_1(mfc0_maar, tl, env)
DEF_HELPER_1(mfhc0_maar, tl, env)
DEF_HELPER_2(mfc0_watchlo, tl, env, i32)
DEF_HELPER_2(mfc0_watchhi, tl, env, i32)
DEF_HELPER_2(mfhc0_watchhi, tl, env, i32)
DEF_HELPER_1(mfc0_debug, tl, env)
DEF_HELPER_1(mftc0_debug, tl, env)
#ifdef TARGET_MIPS64
DEF_HELPER_1(dmfc0_tcrestart, tl, env)
DEF_HELPER_1(dmfc0_tchalt, tl, env)
DEF_HELPER_1(dmfc0_tccontext, tl, env)
DEF_HELPER_1(dmfc0_tcschedule, tl, env)
DEF_HELPER_1(dmfc0_tcschefback, tl, env)
DEF_HELPER_1(dmfc0_lladdr, tl, env)
DEF_HELPER_1(dmfc0_maar, tl, env)
DEF_HELPER_2(dmfc0_watchlo, tl, env, i32)
DEF_HELPER_2(dmfc0_watchhi, tl, env, i32)
DEF_HELPER_1(dmfc0_saar, tl, env)
#endif /* TARGET_MIPS64 */
DEF_HELPER_2(mtc0_index, void, env, tl)
DEF_HELPER_2(mtc0_mvpcontrol, void, env, tl)
DEF_HELPER_2(mtc0_vpecontrol, void, env, tl)
DEF_HELPER_2(mttc0_vpecontrol, void, env, tl)
DEF_HELPER_2(mtc0_vpeconf0, void, env, tl)
DEF_HELPER_2(mttc0_vpeconf0, void, env, tl)
DEF_HELPER_2(mtc0_vpeconf1, void, env, tl)
DEF_HELPER_2(mtc0_yqmask, void, env, tl)
DEF_HELPER_2(mtc0_vpeopt, void, env, tl)
DEF_HELPER_2(mtc0_entrylo0, void, env, tl)
DEF_HELPER_2(mtc0_tcstatus, void, env, tl)
DEF_HELPER_2(mttc0_tcstatus, void, env, tl)
DEF_HELPER_2(mtc0_tcbind, void, env, tl)
DEF_HELPER_2(mttc0_tcbind, void, env, tl)
DEF_HELPER_2(mtc0_tcrestart, void, env, tl)
DEF_HELPER_2(mttc0_tcrestart, void, env, tl)
DEF_HELPER_2(mtc0_tchalt, void, env, tl)
DEF_HELPER_2(mttc0_tchalt, void, env, tl)
DEF_HELPER_2(mtc0_tccontext, void, env, tl)
DEF_HELPER_2(mttc0_tccontext, void, env, tl)
DEF_HELPER_2(mtc0_tcschedule, void, env, tl)
DEF_HELPER_2(mttc0_tcschedule, void, env, tl)
DEF_HELPER_2(mtc0_tcschefback, void, env, tl)
DEF_HELPER_2(mttc0_tcschefback, void, env, tl)
DEF_HELPER_2(mtc0_entrylo1, void, env, tl)
DEF_HELPER_2(mtc0_context, void, env, tl)
DEF_HELPER_2(mtc0_memorymapid, void, env, tl)
DEF_HELPER_2(mtc0_pagemask, void, env, tl)
DEF_HELPER_2(mtc0_pagegrain, void, env, tl)
DEF_HELPER_2(mtc0_segctl0, void, env, tl)
DEF_HELPER_2(mtc0_segctl1, void, env, tl)
DEF_HELPER_2(mtc0_segctl2, void, env, tl)
DEF_HELPER_2(mtc0_pwfield, void, env, tl)
DEF_HELPER_2(mtc0_pwsize, void, env, tl)
DEF_HELPER_2(mtc0_wired, void, env, tl)
DEF_HELPER_2(mtc0_srsconf0, void, env, tl)
DEF_HELPER_2(mtc0_srsconf1, void, env, tl)
DEF_HELPER_2(mtc0_srsconf2, void, env, tl)
DEF_HELPER_2(mtc0_srsconf3, void, env, tl)
DEF_HELPER_2(mtc0_srsconf4, void, env, tl)
DEF_HELPER_2(mtc0_hwrena, void, env, tl)
DEF_HELPER_2(mtc0_pwctl, void, env, tl)
DEF_HELPER_2(mtc0_count, void, env, tl)
DEF_HELPER_2(mtc0_saari, void, env, tl)
DEF_HELPER_2(mtc0_saar, void, env, tl)
DEF_HELPER_2(mthc0_saar, void, env, tl)
DEF_HELPER_2(mtc0_entryhi, void, env, tl)
DEF_HELPER_2(mttc0_entryhi, void, env, tl)
DEF_HELPER_2(mtc0_compare, void, env, tl)
DEF_HELPER_2(mtc0_status, void, env, tl)
DEF_HELPER_2(mttc0_status, void, env, tl)
DEF_HELPER_2(mtc0_intctl, void, env, tl)
DEF_HELPER_2(mtc0_srsctl, void, env, tl)
DEF_HELPER_2(mtc0_cause, void, env, tl)
DEF_HELPER_2(mttc0_cause, void, env, tl)
DEF_HELPER_2(mtc0_ebase, void, env, tl)
DEF_HELPER_2(mttc0_ebase, void, env, tl)
DEF_HELPER_2(mtc0_config0, void, env, tl)
DEF_HELPER_2(mtc0_config2, void, env, tl)
DEF_HELPER_2(mtc0_config3, void, env, tl)
DEF_HELPER_2(mtc0_config4, void, env, tl)
DEF_HELPER_2(mtc0_config5, void, env, tl)
DEF_HELPER_2(mtc0_lladdr, void, env, tl)
DEF_HELPER_2(mtc0_maar, void, env, tl)
DEF_HELPER_2(mthc0_maar, void, env, tl)
DEF_HELPER_2(mtc0_maari, void, env, tl)
DEF_HELPER_3(mtc0_watchlo, void, env, tl, i32)
DEF_HELPER_3(mtc0_watchhi, void, env, tl, i32)
DEF_HELPER_3(mthc0_watchhi, void, env, tl, i32)
DEF_HELPER_2(mtc0_xcontext, void, env, tl)
DEF_HELPER_2(mtc0_framemask, void, env, tl)
DEF_HELPER_2(mtc0_debug, void, env, tl)
DEF_HELPER_2(mttc0_debug, void, env, tl)
DEF_HELPER_2(mtc0_performance0, void, env, tl)
DEF_HELPER_2(mtc0_errctl, void, env, tl)
DEF_HELPER_2(mtc0_taglo, void, env, tl)
DEF_HELPER_2(mtc0_datalo, void, env, tl)
DEF_HELPER_2(mtc0_taghi, void, env, tl)
DEF_HELPER_2(mtc0_datahi, void, env, tl)
#if defined(TARGET_MIPS64)
DEF_HELPER_2(dmtc0_entrylo0, void, env, i64)
DEF_HELPER_2(dmtc0_entrylo1, void, env, i64)
#endif
/* MIPS MT functions */
DEF_HELPER_2(mftgpr, tl, env, i32)
DEF_HELPER_2(mftlo, tl, env, i32)
DEF_HELPER_2(mfthi, tl, env, i32)
DEF_HELPER_2(mftacx, tl, env, i32)
DEF_HELPER_1(mftdsp, tl, env)
DEF_HELPER_3(mttgpr, void, env, tl, i32)
DEF_HELPER_3(mttlo, void, env, tl, i32)
DEF_HELPER_3(mtthi, void, env, tl, i32)
DEF_HELPER_3(mttacx, void, env, tl, i32)
DEF_HELPER_2(mttdsp, void, env, tl)
DEF_HELPER_0(dmt, tl)
DEF_HELPER_0(emt, tl)
DEF_HELPER_1(dvpe, tl, env)
DEF_HELPER_1(evpe, tl, env)
/* R6 Multi-threading */
DEF_HELPER_1(dvp, tl, env)
DEF_HELPER_1(evp, tl, env)
/* TLB */
DEF_HELPER_1(tlbwi, void, env)
DEF_HELPER_1(tlbwr, void, env)
DEF_HELPER_1(tlbp, void, env)
DEF_HELPER_1(tlbr, void, env)
DEF_HELPER_1(tlbinv, void, env)
DEF_HELPER_1(tlbinvf, void, env)
DEF_HELPER_3(ginvt, void, env, tl, i32)
/* Special */
DEF_HELPER_1(di, tl, env)
DEF_HELPER_1(ei, tl, env)
DEF_HELPER_1(eret, void, env)
DEF_HELPER_1(eretnc, void, env)
DEF_HELPER_1(deret, void, env)
DEF_HELPER_3(cache, void, env, tl, i32)

64
target/mips/tcg/tcg-internal.h Normal file
View File

@ -0,0 +1,64 @@
/*
* MIPS internal definitions and helpers (TCG accelerator)
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef MIPS_TCG_INTERNAL_H
#define MIPS_TCG_INTERNAL_H
#include "tcg/tcg.h"
#include "exec/memattrs.h"
#include "hw/core/cpu.h"
#include "cpu.h"
void mips_tcg_init(void);
void mips_cpu_synchronize_from_tb(CPUState *cs, const TranslationBlock *tb);
void mips_cpu_do_interrupt(CPUState *cpu);
bool mips_cpu_exec_interrupt(CPUState *cpu, int int_req);
bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr);
void mips_cpu_do_unaligned_access(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr);
const char *mips_exception_name(int32_t exception);
void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env, uint32_t exception,
int error_code, uintptr_t pc);
static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env,
uint32_t exception,
uintptr_t pc)
{
do_raise_exception_err(env, exception, 0, pc);
}
#if !defined(CONFIG_USER_ONLY)
void mmu_init(CPUMIPSState *env, const mips_def_t *def);
void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask);
void r4k_invalidate_tlb(CPUMIPSState *env, int idx, int use_extra);
uint32_t cpu_mips_get_random(CPUMIPSState *env);
bool mips_io_recompile_replay_branch(CPUState *cs, const TranslationBlock *tb);
hwaddr cpu_mips_translate_address(CPUMIPSState *env, target_ulong address,
MMUAccessType access_type, uintptr_t retaddr);
void mips_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
vaddr addr, unsigned size,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr);
void cpu_mips_tlb_flush(CPUMIPSState *env);
#endif /* !CONFIG_USER_ONLY */
#endif

115
target/mips/translate.c → target/mips/tcg/translate.c
View File

@ -39,6 +39,19 @@
#include "fpu_helper.h"
#include "translate.h"
/*
* Many sysemu-only helpers are not reachable for user-only.
* Define stub generators here, so that we need not either sprinkle
* ifdefs through the translator, nor provide the helper function.
*/
#define STUB_HELPER(NAME, ...) \
static inline void gen_helper_##NAME(__VA_ARGS__) \
{ g_assert_not_reached(); }
#ifdef CONFIG_USER_ONLY
STUB_HELPER(cache, TCGv_env env, TCGv val, TCGv_i32 reg)
#endif
enum {
/* indirect opcode tables */
OPC_SPECIAL = (0x00 << 26),
@ -1267,13 +1280,6 @@ TCGv_i64 fpu_f64[32];
#define DISAS_STOP DISAS_TARGET_0
#define DISAS_EXIT DISAS_TARGET_1
static const char * const regnames[] = {
"r0", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra",
};
static const char * const regnames_HI[] = {
"HI0", "HI1", "HI2", "HI3",
};
@ -1282,13 +1288,6 @@ static const char * const regnames_LO[] = {
"LO0", "LO1", "LO2", "LO3",
};
static const char * const fregnames[] = {
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
};
/* General purpose registers moves. */
void gen_load_gpr(TCGv t, int reg)
{
@ -1572,11 +1571,13 @@ void gen_move_high32(TCGv ret, TCGv_i64 arg)
#endif
}
void check_cp0_enabled(DisasContext *ctx)
bool check_cp0_enabled(DisasContext *ctx)
{
if (unlikely(!(ctx->hflags & MIPS_HFLAG_CP0))) {
generate_exception_end(ctx, EXCP_CpU);
return false;
}
return true;
}
void check_cp1_enabled(DisasContext *ctx)
@ -5945,6 +5946,7 @@ static void gen_mthc0(DisasContext *ctx, TCGv arg, int reg, int sel)
goto cp0_unimplemented;
}
trace_mips_translate_c0("mthc0", register_name, reg, sel);
return;
cp0_unimplemented:
qemu_log_mask(LOG_UNIMP, "mthc0 %s (reg %d sel %d)\n",
@ -18969,9 +18971,11 @@ static void gen_pool32axf_nanomips_insn(CPUMIPSState *env, DisasContext *ctx)
}
break;
case NM_RDPGPR:
check_cp0_enabled(ctx);
gen_load_srsgpr(rs, rt);
break;
case NM_WRPGPR:
check_cp0_enabled(ctx);
gen_store_srsgpr(rs, rt);
break;
case NM_WAIT:
@ -20957,6 +20961,8 @@ static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx)
gen_ld(ctx, OPC_LHUE, rt, rs, s);
break;
case NM_CACHEE:
check_eva(ctx);
check_cp0_enabled(ctx);
check_nms_dl_il_sl_tl_l2c(ctx);
gen_cache_operation(ctx, rt, rs, s);
break;
@ -24530,11 +24536,11 @@ static void decode_opc_special3(CPUMIPSState *env, DisasContext *ctx)
gen_st_cond(ctx, rt, rs, imm, MO_TESL, true);
return;
case OPC_CACHEE:
check_eva(ctx);
check_cp0_enabled(ctx);
if (ctx->hflags & MIPS_HFLAG_ITC_CACHE) {
gen_cache_operation(ctx, rt, rs, imm);
}
/* Treat as NOP. */
return;
case OPC_PREFE:
check_cp0_enabled(ctx);
@ -25593,83 +25599,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
translator_loop(&mips_tr_ops, &ctx.base, cs, tb, max_insns);
}
static void fpu_dump_state(CPUMIPSState *env, FILE * f, int flags)
{
int i;
int is_fpu64 = !!(env->hflags & MIPS_HFLAG_F64);
#define printfpr(fp) \
do { \
if (is_fpu64) \
qemu_fprintf(f, "w:%08x d:%016" PRIx64 \
" fd:%13g fs:%13g psu: %13g\n", \
(fp)->w[FP_ENDIAN_IDX], (fp)->d, \
(double)(fp)->fd, \
(double)(fp)->fs[FP_ENDIAN_IDX], \
(double)(fp)->fs[!FP_ENDIAN_IDX]); \
else { \
fpr_t tmp; \
tmp.w[FP_ENDIAN_IDX] = (fp)->w[FP_ENDIAN_IDX]; \
tmp.w[!FP_ENDIAN_IDX] = ((fp) + 1)->w[FP_ENDIAN_IDX]; \
qemu_fprintf(f, "w:%08x d:%016" PRIx64 \
" fd:%13g fs:%13g psu:%13g\n", \
tmp.w[FP_ENDIAN_IDX], tmp.d, \
(double)tmp.fd, \
(double)tmp.fs[FP_ENDIAN_IDX], \
(double)tmp.fs[!FP_ENDIAN_IDX]); \
} \
} while (0)
qemu_fprintf(f,
"CP1 FCR0 0x%08x FCR31 0x%08x SR.FR %d fp_status 0x%02x\n",
env->active_fpu.fcr0, env->active_fpu.fcr31, is_fpu64,
get_float_exception_flags(&env->active_fpu.fp_status));
for (i = 0; i < 32; (is_fpu64) ? i++ : (i += 2)) {
qemu_fprintf(f, "%3s: ", fregnames[i]);
printfpr(&env->active_fpu.fpr[i]);
}
#undef printfpr
}
void mips_cpu_dump_state(CPUState *cs, FILE *f, int flags)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
int i;
qemu_fprintf(f, "pc=0x" TARGET_FMT_lx " HI=0x" TARGET_FMT_lx
" LO=0x" TARGET_FMT_lx " ds %04x "
TARGET_FMT_lx " " TARGET_FMT_ld "\n",
env->active_tc.PC, env->active_tc.HI[0], env->active_tc.LO[0],
env->hflags, env->btarget, env->bcond);
for (i = 0; i < 32; i++) {
if ((i & 3) == 0) {
qemu_fprintf(f, "GPR%02d:", i);
}
qemu_fprintf(f, " %s " TARGET_FMT_lx,
regnames[i], env->active_tc.gpr[i]);
if ((i & 3) == 3) {
qemu_fprintf(f, "\n");
}
}
qemu_fprintf(f, "CP0 Status 0x%08x Cause 0x%08x EPC 0x"
TARGET_FMT_lx "\n",
env->CP0_Status, env->CP0_Cause, env->CP0_EPC);
qemu_fprintf(f, " Config0 0x%08x Config1 0x%08x LLAddr 0x%016"
PRIx64 "\n",
env->CP0_Config0, env->CP0_Config1, env->CP0_LLAddr);
qemu_fprintf(f, " Config2 0x%08x Config3 0x%08x\n",
env->CP0_Config2, env->CP0_Config3);
qemu_fprintf(f, " Config4 0x%08x Config5 0x%08x\n",
env->CP0_Config4, env->CP0_Config5);
if ((flags & CPU_DUMP_FPU) && (env->hflags & MIPS_HFLAG_FPU)) {
fpu_dump_state(env, f, flags);
}
}
void mips_tcg_init(void)
{
int i;

0
target/mips/translate_addr_const.c → target/mips/tcg/translate_addr_const.c
View File

0
target/mips/tx79.decode → target/mips/tcg/tx79.decode
View File

0
target/mips/tx79_translate.c → target/mips/tcg/tx79_translate.c
View File

0
target/mips/txx9_translate.c → target/mips/tcg/txx9_translate.c
View File

3
target/mips/tcg/user/meson.build Normal file
View File

@ -0,0 +1,3 @@
mips_user_ss.add(files(
'tlb_helper.c',
))

64
target/mips/tcg/user/tlb_helper.c Normal file
View File

@ -0,0 +1,64 @@
/*
* MIPS TLB (Translation lookaside buffer) helpers.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "internal.h"
static void raise_mmu_exception(CPUMIPSState *env, target_ulong address,
MMUAccessType access_type)
{
CPUState *cs = env_cpu(env);
env->error_code = 0;
if (access_type == MMU_INST_FETCH) {
env->error_code |= EXCP_INST_NOTAVAIL;
}
/* Reference to kernel address from user mode or supervisor mode */
/* Reference to supervisor address from user mode */
if (access_type == MMU_DATA_STORE) {
cs->exception_index = EXCP_AdES;
} else {
cs->exception_index = EXCP_AdEL;
}
/* Raise exception */
if (!(env->hflags & MIPS_HFLAG_DM)) {
env->CP0_BadVAddr = address;
}
}
bool mips_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr)
{
MIPSCPU *cpu = MIPS_CPU(cs);
CPUMIPSState *env = &cpu->env;
/* data access */
raise_mmu_exception(env, address, access_type);
do_raise_exception_err(env, cs->exception_index, env->error_code, retaddr);
}
void mips_cpu_do_interrupt(CPUState *cs)
{
cs->exception_index = EXCP_NONE;
}

7
target/mips/translate.h
View File

@ -120,7 +120,12 @@ void gen_reserved_instruction(DisasContext *ctx);
void check_insn(DisasContext *ctx, uint64_t flags);
void check_mips_64(DisasContext *ctx);
void check_cp0_enabled(DisasContext *ctx);
/**
* check_cp0_enabled:
* Return %true if CP0 is enabled, otherwise return %false
* and emit a 'coprocessor unusable' exception.
*/
bool check_cp0_enabled(DisasContext *ctx);
void check_cp1_enabled(DisasContext *ctx);
void check_cp1_64bitmode(DisasContext *ctx);
void check_cp1_registers(DisasContext *ctx, int regs);