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op_helper.c
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/*
* 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 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 <stdlib.h>
#include "cpu.h"
#include "qemu/host-utils.h"
#include "helper.h"
#if !defined(CONFIG_USER_ONLY)
#include "exec/softmmu_exec.h"
#endif /* !defined(CONFIG_USER_ONLY) */
#ifndef CONFIG_USER_ONLY
static inline void cpu_mips_tlb_flush (CPUMIPSState *env, int flush_global);
#endif
/*****************************************************************************/
/* Exceptions processing helpers */
static inline void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env,
uint32_t exception,
int error_code,
uintptr_t pc)
{
if (exception < EXCP_SC) {
qemu_log("%s: %d %d\n", __func__, exception, error_code);
}
env->exception_index = exception;
env->error_code = error_code;
if (pc) {
/* now we have a real cpu fault */
cpu_restore_state(env, pc);
}
cpu_loop_exit(env);
}
static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env,
uint32_t exception,
uintptr_t pc)
{
do_raise_exception_err(env, exception, 0, 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, 0);
}
#if defined(CONFIG_USER_ONLY)
#define HELPER_LD(name, insn, type) \
static inline type do_##name(CPUMIPSState *env, target_ulong addr, \
int mem_idx) \
{ \
return (type) insn##_raw(addr); \
}
#else
#define HELPER_LD(name, insn, type) \
static inline type do_##name(CPUMIPSState *env, target_ulong addr, \
int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: return (type) cpu_##insn##_kernel(env, addr); break; \
case 1: return (type) cpu_##insn##_super(env, addr); break; \
default: \
case 2: return (type) cpu_##insn##_user(env, addr); break; \
} \
}
#endif
HELPER_LD(lbu, ldub, uint8_t)
HELPER_LD(lw, ldl, int32_t)
#ifdef TARGET_MIPS64
HELPER_LD(ld, ldq, int64_t)
#endif
#undef HELPER_LD
#if defined(CONFIG_USER_ONLY)
#define HELPER_ST(name, insn, type) \
static inline void do_##name(CPUMIPSState *env, target_ulong addr, \
type val, int mem_idx) \
{ \
insn##_raw(addr, val); \
}
#else
#define HELPER_ST(name, insn, type) \
static inline void do_##name(CPUMIPSState *env, target_ulong addr, \
type val, int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: cpu_##insn##_kernel(env, addr, val); break; \
case 1: cpu_##insn##_super(env, addr, val); break; \
default: \
case 2: cpu_##insn##_user(env, addr, val); break; \
} \
}
#endif
HELPER_ST(sb, stb, uint8_t)
HELPER_ST(sw, stl, uint32_t)
#ifdef TARGET_MIPS64
HELPER_ST(sd, stq, uint64_t)
#endif
#undef HELPER_ST
target_ulong helper_clo (target_ulong arg1)
{
return clo32(arg1);
}
target_ulong helper_clz (target_ulong arg1)
{
return clz32(arg1);
}
#if defined(TARGET_MIPS64)
target_ulong helper_dclo (target_ulong arg1)
{
return clo64(arg1);
}
target_ulong helper_dclz (target_ulong arg1)
{
return clz64(arg1);
}
#endif /* TARGET_MIPS64 */
/* 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)
{
target_ulong tmp;
env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
tmp = env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
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);
}
#ifndef CONFIG_USER_ONLY
static inline hwaddr do_translate_address(CPUMIPSState *env,
target_ulong address,
int rw)
{
hwaddr lladdr;
lladdr = cpu_mips_translate_address(env, address, rw);
if (lladdr == -1LL) {
cpu_loop_exit(env);
} else {
return lladdr;
}
}
#define HELPER_LD_ATOMIC(name, insn) \
target_ulong helper_##name(CPUMIPSState *env, target_ulong arg, int mem_idx) \
{ \
env->lladdr = do_translate_address(env, arg, 0); \
env->llval = do_##insn(env, arg, mem_idx); \
return env->llval; \
}
HELPER_LD_ATOMIC(ll, lw)
#ifdef TARGET_MIPS64
HELPER_LD_ATOMIC(lld, ld)
#endif
#undef HELPER_LD_ATOMIC
#define HELPER_ST_ATOMIC(name, ld_insn, st_insn, almask) \
target_ulong helper_##name(CPUMIPSState *env, target_ulong arg1, \
target_ulong arg2, int mem_idx) \
{ \
target_long tmp; \
\
if (arg2 & almask) { \
env->CP0_BadVAddr = arg2; \
helper_raise_exception(env, EXCP_AdES); \
} \
if (do_translate_address(env, arg2, 1) == env->lladdr) { \
tmp = do_##ld_insn(env, arg2, mem_idx); \
if (tmp == env->llval) { \
do_##st_insn(env, arg2, arg1, mem_idx); \
return 1; \
} \
} \
return 0; \
}
HELPER_ST_ATOMIC(sc, lw, sw, 0x3)
#ifdef TARGET_MIPS64
HELPER_ST_ATOMIC(scd, ld, sd, 0x7)
#endif
#undef HELPER_ST_ATOMIC
#endif
#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)
{
do_sb(env, arg2, (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK(arg2) <= 2)
do_sb(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) <= 1)
do_sb(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) == 0)
do_sb(env, GET_OFFSET(arg2, 3), (uint8_t)arg1, mem_idx);
}
void helper_swr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK(arg2) >= 1)
do_sb(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) >= 2)
do_sb(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) == 3)
do_sb(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24), mem_idx);
}
#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)
{
do_sb(env, arg2, (uint8_t)(arg1 >> 56), mem_idx);
if (GET_LMASK64(arg2) <= 6)
do_sb(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) <= 5)
do_sb(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) <= 4)
do_sb(env, GET_OFFSET(arg2, 3), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) <= 3)
do_sb(env, GET_OFFSET(arg2, 4), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) <= 2)
do_sb(env, GET_OFFSET(arg2, 5), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) <= 1)
do_sb(env, GET_OFFSET(arg2, 6), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) <= 0)
do_sb(env, GET_OFFSET(arg2, 7), (uint8_t)arg1, mem_idx);
}
void helper_sdr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK64(arg2) >= 1)
do_sb(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) >= 2)
do_sb(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) >= 3)
do_sb(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) >= 4)
do_sb(env, GET_OFFSET(arg2, -4), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) >= 5)
do_sb(env, GET_OFFSET(arg2, -5), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) >= 6)
do_sb(env, GET_OFFSET(arg2, -6), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) == 7)
do_sb(env, GET_OFFSET(arg2, -7), (uint8_t)(arg1 >> 56), mem_idx);
}
#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)do_lw(env, addr, mem_idx);
addr += 4;
}
}
if (do_r31) {
env->active_tc.gpr[31] = (target_long)do_lw(env, addr, mem_idx);
}
}
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++) {
do_sw(env, addr, env->active_tc.gpr[multiple_regs[i]], mem_idx);
addr += 4;
}
}
if (do_r31) {
do_sw(env, addr, env->active_tc.gpr[31], mem_idx);
}
}
#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]] = do_ld(env, addr, mem_idx);
addr += 8;
}
}
if (do_r31) {
env->active_tc.gpr[31] = do_ld(env, addr, mem_idx);
}
}
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++) {
do_sd(env, addr, env->active_tc.gpr[multiple_regs[i]], mem_idx);
addr += 8;
}
}
if (do_r31) {
do_sd(env, addr, env->active_tc.gpr[31], mem_idx);
}
}
#endif
#ifndef CONFIG_USER_ONLY
/* SMP helpers. */
static bool mips_vpe_is_wfi(MIPSCPU *c)
{
CPUState *cpu = CPU(c);
CPUMIPSState *env = &c->env;
/* If the VPE is halted but otherwise active, it means it's waiting for
an interrupt. */
return cpu->halted && mips_vpe_active(env);
}
static inline void mips_vpe_wake(CPUMIPSState *c)
{
/* Dont set ->halted = 0 directly, let it be done via cpu_has_work
because there might be other conditions that state that c should
be sleeping. */
cpu_interrupt(c, CPU_INTERRUPT_WAKE);
}
static inline void mips_vpe_sleep(MIPSCPU *cpu)
{
CPUState *cs = CPU(cpu);
/* The VPE was shut off, really go to bed.
Reset any old _WAKE requests. */
cs->halted = 1;
cpu_reset_interrupt(cs, CPU_INTERRUPT_WAKE);
}
static inline void mips_tc_wake(MIPSCPU *cpu, int tc)
{
CPUMIPSState *c = &cpu->env;
/* FIXME: TC reschedule. */
if (mips_vpe_active(c) && !mips_vpe_is_wfi(cpu)) {
mips_vpe_wake(c);
}
}
static inline void mips_tc_sleep(MIPSCPU *cpu, int tc)
{
CPUMIPSState *c = &cpu->env;
/* FIXME: TC reschedule. */
if (!mips_vpe_active(c)) {
mips_vpe_sleep(cpu);
}
}
/**
* mips_cpu_map_tc:
* @env: CPU from which mapping is performed.
* @tc: Should point to an int with the value of the global TC index.
*
* This function will transform @tc into a local index within the
* returned #CPUMIPSState.
*/
/* FIXME: This code assumes that all VPEs have the same number of TCs,
which depends on runtime setup. Can probably be fixed by
walking the list of CPUMIPSStates. */
static CPUMIPSState *mips_cpu_map_tc(CPUMIPSState *env, int *tc)
{
MIPSCPU *cpu;
CPUState *cs;
CPUState *other_cs;
int vpe_idx;
int tc_idx = *tc;
if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))) {
/* Not allowed to address other CPUs. */
*tc = env->current_tc;
return env;
}
cs = CPU(mips_env_get_cpu(env));
vpe_idx = tc_idx / cs->nr_threads;
*tc = tc_idx % cs->nr_threads;
other_cs = qemu_get_cpu(vpe_idx);
if (other_cs == NULL) {
return env;
}
cpu = MIPS_CPU(other_cs);
return &cpu->env;
}
/* The per VPE CP0_Status register shares some fields with the per TC
CP0_TCStatus registers. These fields are wired to the same registers,
so changes to either of them should be reflected on both registers.
Also, EntryHi shares the bottom 8 bit ASID with TCStauts.
These helper call synchronizes the regs for a given cpu. */
/* Called for updates to CP0_Status. */
static 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 & 0xff;
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);
}
/* Called for updates to CP0_TCStatus. */
static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc,
target_ulong v)
{
uint32_t status;
uint32_t tcu, tmx, tasid, tksu;
uint32_t mask = ((1 << CP0St_CU3)
| (1 << CP0St_CU2)
| (1 << CP0St_CU1)
| (1 << CP0St_CU0)
| (1 << CP0St_MX)
| (3 << CP0St_KSU));
tcu = (v >> CP0TCSt_TCU0) & 0xf;
tmx = (v >> CP0TCSt_TMX) & 0x1;
tasid = v & 0xff;
tksu = (v >> CP0TCSt_TKSU) & 0x3;
status = tcu << CP0St_CU0;
status |= tmx << CP0St_MX;
status |= tksu << CP0St_KSU;
cpu->CP0_Status &= ~mask;
cpu->CP0_Status |= status;
/* Sync the TASID with EntryHi. */
cpu->CP0_EntryHi &= ~0xff;
cpu->CP0_EntryHi = tasid;
compute_hflags(cpu);
}
/* Called for updates to CP0_EntryHi. */
static void sync_c0_entryhi(CPUMIPSState *cpu, int tc)
{
int32_t *tcst;
uint32_t asid, v = cpu->CP0_EntryHi;
asid = v & 0xff;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
} else {
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~0xff;
*tcst |= asid;
}
/* CP0 helpers */
target_ulong helper_mfc0_mvpcontrol(CPUMIPSState *env)
{
return env->mvp->CP0_MVPControl;
}
target_ulong helper_mfc0_mvpconf0(CPUMIPSState *env)
{
return env->mvp->CP0_MVPConf0;
}
target_ulong helper_mfc0_mvpconf1(CPUMIPSState *env)
{
return env->mvp->CP0_MVPConf1;
}
target_ulong helper_mfc0_random(CPUMIPSState *env)
{
return (int32_t)cpu_mips_get_random(env);
}
target_ulong helper_mfc0_tcstatus(CPUMIPSState *env)
{
return env->active_tc.CP0_TCStatus;
}
target_ulong helper_mftc0_tcstatus(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCStatus;
else
return other->tcs[other_tc].CP0_TCStatus;
}
target_ulong helper_mfc0_tcbind(CPUMIPSState *env)
{
return env->active_tc.CP0_TCBind;
}
target_ulong helper_mftc0_tcbind(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCBind;
else
return other->tcs[other_tc].CP0_TCBind;
}
target_ulong helper_mfc0_tcrestart(CPUMIPSState *env)
{
return env->active_tc.PC;
}
target_ulong helper_mftc0_tcrestart(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.PC;
else
return other->tcs[other_tc].PC;
}
target_ulong helper_mfc0_tchalt(CPUMIPSState *env)
{
return env->active_tc.CP0_TCHalt;
}
target_ulong helper_mftc0_tchalt(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCHalt;
else
return other->tcs[other_tc].CP0_TCHalt;
}
target_ulong helper_mfc0_tccontext(CPUMIPSState *env)
{
return env->active_tc.CP0_TCContext;
}
target_ulong helper_mftc0_tccontext(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCContext;
else
return other->tcs[other_tc].CP0_TCContext;
}
target_ulong helper_mfc0_tcschedule(CPUMIPSState *env)
{
return env->active_tc.CP0_TCSchedule;
}
target_ulong helper_mftc0_tcschedule(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCSchedule;
else
return other->tcs[other_tc].CP0_TCSchedule;
}
target_ulong helper_mfc0_tcschefback(CPUMIPSState *env)
{
return env->active_tc.CP0_TCScheFBack;
}
target_ulong helper_mftc0_tcschefback(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCScheFBack;
else
return other->tcs[other_tc].CP0_TCScheFBack;
}
target_ulong helper_mfc0_count(CPUMIPSState *env)
{
return (int32_t)cpu_mips_get_count(env);
}
target_ulong helper_mftc0_entryhi(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
return other->CP0_EntryHi;
}
target_ulong helper_mftc0_cause(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
int32_t tccause;
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc) {
tccause = other->CP0_Cause;
} else {
tccause = other->CP0_Cause;
}
return tccause;
}
target_ulong helper_mftc0_status(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
return other->CP0_Status;
}
target_ulong helper_mfc0_lladdr(CPUMIPSState *env)
{
return (int32_t)(env->lladdr >> env->CP0_LLAddr_shift);
}
target_ulong helper_mfc0_watchlo(CPUMIPSState *env, uint32_t sel)
{
return (int32_t)env->CP0_WatchLo[sel];
}
target_ulong helper_mfc0_watchhi(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchHi[sel];
}
target_ulong helper_mfc0_debug(CPUMIPSState *env)
{
target_ulong t0 = env->CP0_Debug;
if (env->hflags & MIPS_HFLAG_DM)
t0 |= 1 << CP0DB_DM;
return t0;
}
target_ulong helper_mftc0_debug(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
int32_t tcstatus;
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
tcstatus = other->active_tc.CP0_Debug_tcstatus;
else
tcstatus = other->tcs[other_tc].CP0_Debug_tcstatus;
/* XXX: Might be wrong, check with EJTAG spec. */
return (other->CP0_Debug & ~((1 << CP0DB_SSt) | (1 << CP0DB_Halt))) |
(tcstatus & ((1 << CP0DB_SSt) | (1 << CP0DB_Halt)));
}
#if defined(TARGET_MIPS64)
target_ulong helper_dmfc0_tcrestart(CPUMIPSState *env)
{
return env->active_tc.PC;
}
target_ulong helper_dmfc0_tchalt(CPUMIPSState *env)
{
return env->active_tc.CP0_TCHalt;
}
target_ulong helper_dmfc0_tccontext(CPUMIPSState *env)
{
return env->active_tc.CP0_TCContext;
}
target_ulong helper_dmfc0_tcschedule(CPUMIPSState *env)
{
return env->active_tc.CP0_TCSchedule;
}
target_ulong helper_dmfc0_tcschefback(CPUMIPSState *env)
{
return env->active_tc.CP0_TCScheFBack;
}
target_ulong helper_dmfc0_lladdr(CPUMIPSState *env)
{
return env->lladdr >> env->CP0_LLAddr_shift;
}
target_ulong helper_dmfc0_watchlo(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchLo[sel];
}
#endif /* TARGET_MIPS64 */
void helper_mtc0_index(CPUMIPSState *env, target_ulong arg1)
{
int num = 1;
unsigned int tmp = env->tlb->nb_tlb;
do {
tmp >>= 1;
num <<= 1;
} while (tmp);
env->CP0_Index = (env->CP0_Index & 0x80000000) | (arg1 & (num - 1));
}
void helper_mtc0_mvpcontrol(CPUMIPSState *env, target_ulong arg1)
{
uint32_t mask = 0;
uint32_t newval;
if (env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))
mask |= (1 << CP0MVPCo_CPA) | (1 << CP0MVPCo_VPC) |
(1 << CP0MVPCo_EVP);
if (env->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC))
mask |= (1 << CP0MVPCo_STLB);
newval = (env->mvp->CP0_MVPControl & ~mask) | (arg1 & mask);
// TODO: Enable/disable shared TLB, enable/disable VPEs.
env->mvp->CP0_MVPControl = newval;
}
void helper_mtc0_vpecontrol(CPUMIPSState *env, target_ulong arg1)
{
uint32_t mask;
uint32_t newval;
mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) |
(1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC);
newval = (env->CP0_VPEControl & ~mask) | (arg1 & mask);
/* Yield scheduler intercept not implemented. */
/* Gating storage scheduler intercept not implemented. */
// TODO: Enable/disable TCs.
env->CP0_VPEControl = newval;
}
void helper_mttc0_vpecontrol(CPUMIPSState *env, target_ulong arg1)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
uint32_t mask;
uint32_t newval;
mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) |
(1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC);
newval = (other->CP0_VPEControl & ~mask) | (arg1 & mask);
/* TODO: Enable/disable TCs. */
other->CP0_VPEControl = newval;
}