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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 "dyngen-exec.h"
#include "host-utils.h"
#include "helper.h"
#if !defined(CONFIG_USER_ONLY)
#include "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
static inline void compute_hflags(CPUMIPSState *env)
{
env->hflags &= ~(MIPS_HFLAG_COP1X | MIPS_HFLAG_64 | MIPS_HFLAG_CP0 |
MIPS_HFLAG_F64 | MIPS_HFLAG_FPU | MIPS_HFLAG_KSU |
MIPS_HFLAG_UX);
if (!(env->CP0_Status & (1 << CP0St_EXL)) &&
!(env->CP0_Status & (1 << CP0St_ERL)) &&
!(env->hflags & MIPS_HFLAG_DM)) {
env->hflags |= (env->CP0_Status >> CP0St_KSU) & MIPS_HFLAG_KSU;
}
#if defined(TARGET_MIPS64)
if (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_UM) ||
(env->CP0_Status & (1 << CP0St_PX)) ||
(env->CP0_Status & (1 << CP0St_UX))) {
env->hflags |= MIPS_HFLAG_64;
}
if (env->CP0_Status & (1 << CP0St_UX)) {
env->hflags |= MIPS_HFLAG_UX;
}
#endif
if ((env->CP0_Status & (1 << CP0St_CU0)) ||
!(env->hflags & MIPS_HFLAG_KSU)) {
env->hflags |= MIPS_HFLAG_CP0;
}
if (env->CP0_Status & (1 << CP0St_CU1)) {
env->hflags |= MIPS_HFLAG_FPU;
}
if (env->CP0_Status & (1 << CP0St_FR)) {
env->hflags |= MIPS_HFLAG_F64;
}
if (env->insn_flags & ISA_MIPS32R2) {
if (env->active_fpu.fcr0 & (1 << FCR0_F64)) {
env->hflags |= MIPS_HFLAG_COP1X;
}
} else if (env->insn_flags & ISA_MIPS32) {
if (env->hflags & MIPS_HFLAG_64) {
env->hflags |= MIPS_HFLAG_COP1X;
}
} else if (env->insn_flags & ISA_MIPS4) {
/* All supported MIPS IV CPUs use the XX (CU3) to enable
and disable the MIPS IV extensions to the MIPS III ISA.
Some other MIPS IV CPUs ignore the bit, so the check here
would be too restrictive for them. */
if (env->CP0_Status & (1 << CP0St_CU3)) {
env->hflags |= MIPS_HFLAG_COP1X;
}
}
}
/*****************************************************************************/
/* Exceptions processing helpers */
void helper_raise_exception_err (uint32_t exception, int error_code)
{
#if 1
if (exception < 0x100)
qemu_log("%s: %d %d\n", __func__, exception, error_code);
#endif
env->exception_index = exception;
env->error_code = error_code;
cpu_loop_exit(env);
}
void helper_raise_exception (uint32_t exception)
{
helper_raise_exception_err(exception, 0);
}
#if !defined(CONFIG_USER_ONLY)
static void do_restore_state(uintptr_t pc)
{
TranslationBlock *tb;
tb = tb_find_pc (pc);
if (tb) {
cpu_restore_state(tb, env, pc);
}
}
#endif
#if defined(CONFIG_USER_ONLY)
#define HELPER_LD(name, insn, type) \
static inline type do_##name(target_ulong addr, int mem_idx) \
{ \
return (type) insn##_raw(addr); \
}
#else
#define HELPER_LD(name, insn, type) \
static inline type do_##name(target_ulong addr, int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: return (type) insn##_kernel(addr); break; \
case 1: return (type) insn##_super(addr); break; \
default: \
case 2: return (type) insn##_user(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(target_ulong addr, type val, int mem_idx) \
{ \
insn##_raw(addr, val); \
}
#else
#define HELPER_ST(name, insn, type) \
static inline void do_##name(target_ulong addr, type val, int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: insn##_kernel(addr, val); break; \
case 1: insn##_super(addr, val); break; \
default: \
case 2: insn##_user(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 (void)
{
return ((uint64_t)(env->active_tc.HI[0]) << 32) | (uint32_t)env->active_tc.LO[0];
}
static inline void set_HIT0_LO (target_ulong arg1, uint64_t HILO)
{
env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
arg1 = env->active_tc.HI[0] = (int32_t)(HILO >> 32);
}
static inline void set_HI_LOT0 (target_ulong arg1, uint64_t HILO)
{
arg1 = env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
env->active_tc.HI[0] = (int32_t)(HILO >> 32);
}
/* Multiplication variants of the vr54xx. */
target_ulong helper_muls (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, 0 - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_mulsu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, 0 - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
target_ulong helper_macc (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((int64_t)get_HILO()) + ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_macchi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((int64_t)get_HILO()) + ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_maccu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((uint64_t)get_HILO()) + ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
target_ulong helper_macchiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((uint64_t)get_HILO()) + ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
target_ulong helper_msac (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((int64_t)get_HILO()) - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_msachi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((int64_t)get_HILO()) - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_msacu (target_ulong arg1, target_ulong arg2)
{
set_HI_LOT0(arg1, ((uint64_t)get_HILO()) - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
target_ulong helper_msachiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, ((uint64_t)get_HILO()) - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
target_ulong helper_mulhi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, (int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
return arg1;
}
target_ulong helper_mulhiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, (uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
return arg1;
}
target_ulong helper_mulshi (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, 0 - ((int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2));
return arg1;
}
target_ulong helper_mulshiu (target_ulong arg1, target_ulong arg2)
{
set_HIT0_LO(arg1, 0 - ((uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2));
return arg1;
}
#ifdef TARGET_MIPS64
void helper_dmult (target_ulong arg1, target_ulong arg2)
{
muls64(&(env->active_tc.LO[0]), &(env->active_tc.HI[0]), arg1, arg2);
}
void helper_dmultu (target_ulong arg1, target_ulong arg2)
{
mulu64(&(env->active_tc.LO[0]), &(env->active_tc.HI[0]), arg1, arg2);
}
#endif
#ifndef CONFIG_USER_ONLY
static inline target_phys_addr_t do_translate_address(target_ulong address, int rw)
{
target_phys_addr_t 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(target_ulong arg, int mem_idx) \
{ \
env->lladdr = do_translate_address(arg, 0); \
env->llval = do_##insn(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(target_ulong arg1, target_ulong arg2, int mem_idx) \
{ \
target_long tmp; \
\
if (arg2 & almask) { \
env->CP0_BadVAddr = arg2; \
helper_raise_exception(EXCP_AdES); \
} \
if (do_translate_address(arg2, 1) == env->lladdr) { \
tmp = do_##ld_insn(arg2, mem_idx); \
if (tmp == env->llval) { \
do_##st_insn(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
target_ulong helper_lwl(target_ulong arg1, target_ulong arg2, int mem_idx)
{
target_ulong tmp;
tmp = do_lbu(arg2, mem_idx);
arg1 = (arg1 & 0x00FFFFFF) | (tmp << 24);
if (GET_LMASK(arg2) <= 2) {
tmp = do_lbu(GET_OFFSET(arg2, 1), mem_idx);
arg1 = (arg1 & 0xFF00FFFF) | (tmp << 16);
}
if (GET_LMASK(arg2) <= 1) {
tmp = do_lbu(GET_OFFSET(arg2, 2), mem_idx);
arg1 = (arg1 & 0xFFFF00FF) | (tmp << 8);
}
if (GET_LMASK(arg2) == 0) {
tmp = do_lbu(GET_OFFSET(arg2, 3), mem_idx);
arg1 = (arg1 & 0xFFFFFF00) | tmp;
}
return (int32_t)arg1;
}
target_ulong helper_lwr(target_ulong arg1, target_ulong arg2, int mem_idx)
{
target_ulong tmp;
tmp = do_lbu(arg2, mem_idx);
arg1 = (arg1 & 0xFFFFFF00) | tmp;
if (GET_LMASK(arg2) >= 1) {
tmp = do_lbu(GET_OFFSET(arg2, -1), mem_idx);
arg1 = (arg1 & 0xFFFF00FF) | (tmp << 8);
}
if (GET_LMASK(arg2) >= 2) {
tmp = do_lbu(GET_OFFSET(arg2, -2), mem_idx);
arg1 = (arg1 & 0xFF00FFFF) | (tmp << 16);
}
if (GET_LMASK(arg2) == 3) {
tmp = do_lbu(GET_OFFSET(arg2, -3), mem_idx);
arg1 = (arg1 & 0x00FFFFFF) | (tmp << 24);
}
return (int32_t)arg1;
}
void helper_swl(target_ulong arg1, target_ulong arg2, int mem_idx)
{
do_sb(arg2, (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK(arg2) <= 2)
do_sb(GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) <= 1)
do_sb(GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) == 0)
do_sb(GET_OFFSET(arg2, 3), (uint8_t)arg1, mem_idx);
}
void helper_swr(target_ulong arg1, target_ulong arg2, int mem_idx)
{
do_sb(arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK(arg2) >= 1)
do_sb(GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) >= 2)
do_sb(GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) == 3)
do_sb(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
target_ulong helper_ldl(target_ulong arg1, target_ulong arg2, int mem_idx)
{
uint64_t tmp;
tmp = do_lbu(arg2, mem_idx);
arg1 = (arg1 & 0x00FFFFFFFFFFFFFFULL) | (tmp << 56);
if (GET_LMASK64(arg2) <= 6) {
tmp = do_lbu(GET_OFFSET(arg2, 1), mem_idx);
arg1 = (arg1 & 0xFF00FFFFFFFFFFFFULL) | (tmp << 48);
}
if (GET_LMASK64(arg2) <= 5) {
tmp = do_lbu(GET_OFFSET(arg2, 2), mem_idx);
arg1 = (arg1 & 0xFFFF00FFFFFFFFFFULL) | (tmp << 40);
}
if (GET_LMASK64(arg2) <= 4) {
tmp = do_lbu(GET_OFFSET(arg2, 3), mem_idx);
arg1 = (arg1 & 0xFFFFFF00FFFFFFFFULL) | (tmp << 32);
}
if (GET_LMASK64(arg2) <= 3) {
tmp = do_lbu(GET_OFFSET(arg2, 4), mem_idx);
arg1 = (arg1 & 0xFFFFFFFF00FFFFFFULL) | (tmp << 24);
}
if (GET_LMASK64(arg2) <= 2) {
tmp = do_lbu(GET_OFFSET(arg2, 5), mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFF00FFFFULL) | (tmp << 16);
}
if (GET_LMASK64(arg2) <= 1) {
tmp = do_lbu(GET_OFFSET(arg2, 6), mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFFFF00FFULL) | (tmp << 8);
}
if (GET_LMASK64(arg2) == 0) {
tmp = do_lbu(GET_OFFSET(arg2, 7), mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFFFFFF00ULL) | tmp;
}
return arg1;
}
target_ulong helper_ldr(target_ulong arg1, target_ulong arg2, int mem_idx)
{
uint64_t tmp;
tmp = do_lbu(arg2, mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFFFFFF00ULL) | tmp;
if (GET_LMASK64(arg2) >= 1) {
tmp = do_lbu(GET_OFFSET(arg2, -1), mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFFFF00FFULL) | (tmp << 8);
}
if (GET_LMASK64(arg2) >= 2) {
tmp = do_lbu(GET_OFFSET(arg2, -2), mem_idx);
arg1 = (arg1 & 0xFFFFFFFFFF00FFFFULL) | (tmp << 16);
}
if (GET_LMASK64(arg2) >= 3) {
tmp = do_lbu(GET_OFFSET(arg2, -3), mem_idx);
arg1 = (arg1 & 0xFFFFFFFF00FFFFFFULL) | (tmp << 24);
}
if (GET_LMASK64(arg2) >= 4) {
tmp = do_lbu(GET_OFFSET(arg2, -4), mem_idx);
arg1 = (arg1 & 0xFFFFFF00FFFFFFFFULL) | (tmp << 32);
}
if (GET_LMASK64(arg2) >= 5) {
tmp = do_lbu(GET_OFFSET(arg2, -5), mem_idx);
arg1 = (arg1 & 0xFFFF00FFFFFFFFFFULL) | (tmp << 40);
}
if (GET_LMASK64(arg2) >= 6) {
tmp = do_lbu(GET_OFFSET(arg2, -6), mem_idx);
arg1 = (arg1 & 0xFF00FFFFFFFFFFFFULL) | (tmp << 48);
}
if (GET_LMASK64(arg2) == 7) {
tmp = do_lbu(GET_OFFSET(arg2, -7), mem_idx);
arg1 = (arg1 & 0x00FFFFFFFFFFFFFFULL) | (tmp << 56);
}
return arg1;
}
void helper_sdl(target_ulong arg1, target_ulong arg2, int mem_idx)
{
do_sb(arg2, (uint8_t)(arg1 >> 56), mem_idx);
if (GET_LMASK64(arg2) <= 6)
do_sb(GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) <= 5)
do_sb(GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) <= 4)
do_sb(GET_OFFSET(arg2, 3), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) <= 3)
do_sb(GET_OFFSET(arg2, 4), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) <= 2)
do_sb(GET_OFFSET(arg2, 5), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) <= 1)
do_sb(GET_OFFSET(arg2, 6), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) <= 0)
do_sb(GET_OFFSET(arg2, 7), (uint8_t)arg1, mem_idx);
}
void helper_sdr(target_ulong arg1, target_ulong arg2, int mem_idx)
{
do_sb(arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK64(arg2) >= 1)
do_sb(GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) >= 2)
do_sb(GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) >= 3)
do_sb(GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) >= 4)
do_sb(GET_OFFSET(arg2, -4), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) >= 5)
do_sb(GET_OFFSET(arg2, -5), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) >= 6)
do_sb(GET_OFFSET(arg2, -6), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) == 7)
do_sb(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 (target_ulong addr, target_ulong reglist, uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
#ifdef CONFIG_USER_ONLY
#undef ldfun
#define ldfun ldl_raw
#else
uint32_t (*ldfun)(target_ulong);
switch (mem_idx)
{
case 0: ldfun = ldl_kernel; break;
case 1: ldfun = ldl_super; break;
default:
case 2: ldfun = ldl_user; break;
}
#endif
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) ldfun(addr);
addr += 4;
}
}
if (do_r31) {
env->active_tc.gpr[31] = (target_long) ldfun(addr);
}
}
void helper_swm (target_ulong addr, target_ulong reglist, uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
#ifdef CONFIG_USER_ONLY
#undef stfun
#define stfun stl_raw
#else
void (*stfun)(target_ulong, uint32_t);
switch (mem_idx)
{
case 0: stfun = stl_kernel; break;
case 1: stfun = stl_super; break;
default:
case 2: stfun = stl_user; break;
}
#endif
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
stfun(addr, env->active_tc.gpr[multiple_regs[i]]);
addr += 4;
}
}
if (do_r31) {
stfun(addr, env->active_tc.gpr[31]);
}
}
#if defined(TARGET_MIPS64)
void helper_ldm (target_ulong addr, target_ulong reglist, uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
#ifdef CONFIG_USER_ONLY
#undef ldfun
#define ldfun ldq_raw
#else
uint64_t (*ldfun)(target_ulong);
switch (mem_idx)
{
case 0: ldfun = ldq_kernel; break;
case 1: ldfun = ldq_super; break;
default:
case 2: ldfun = ldq_user; break;
}
#endif
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]] = ldfun(addr);
addr += 8;
}
}
if (do_r31) {
env->active_tc.gpr[31] = ldfun(addr);
}
}
void helper_sdm (target_ulong addr, target_ulong reglist, uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
#ifdef CONFIG_USER_ONLY
#undef stfun
#define stfun stq_raw
#else
void (*stfun)(target_ulong, uint64_t);
switch (mem_idx)
{
case 0: stfun = stq_kernel; break;
case 1: stfun = stq_super; break;
default:
case 2: stfun = stq_user; break;
}
#endif
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
stfun(addr, env->active_tc.gpr[multiple_regs[i]]);
addr += 8;
}
}
if (do_r31) {
stfun(addr, env->active_tc.gpr[31]);
}
}
#endif
#ifndef CONFIG_USER_ONLY
/* SMP helpers. */
static int mips_vpe_is_wfi(CPUMIPSState *c)
{
/* If the VPE is halted but otherwise active, it means it's waiting for
an interrupt. */
return c->halted && mips_vpe_active(c);
}
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(CPUMIPSState *c)
{
/* The VPE was shut off, really go to bed.
Reset any old _WAKE requests. */
c->halted = 1;
cpu_reset_interrupt(c, CPU_INTERRUPT_WAKE);
}
static inline void mips_tc_wake(CPUMIPSState *c, int tc)
{
/* FIXME: TC reschedule. */
if (mips_vpe_active(c) && !mips_vpe_is_wfi(c)) {
mips_vpe_wake(c);
}
}
static inline void mips_tc_sleep(CPUMIPSState *c, int tc)
{
/* FIXME: TC reschedule. */
if (!mips_vpe_active(c)) {
mips_vpe_sleep(c);
}
}
/* tc should point to an int with the value of the global TC index.
This function will transform it 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(int *tc)
{
CPUMIPSState *other;
int vpe_idx, nr_threads = env->nr_threads;
int tc_idx = *tc;
if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))) {
/* Not allowed to address other CPUs. */
*tc = env->current_tc;
return env;
}
vpe_idx = tc_idx / nr_threads;
*tc = tc_idx % nr_threads;
other = qemu_get_cpu(vpe_idx);
return other ? other : 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 *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 (void)
{
return env->mvp->CP0_MVPControl;
}
target_ulong helper_mfc0_mvpconf0 (void)
{
return env->mvp->CP0_MVPConf0;
}
target_ulong helper_mfc0_mvpconf1 (void)
{
return env->mvp->CP0_MVPConf1;
}
target_ulong helper_mfc0_random (void)
{
return (int32_t)cpu_mips_get_random(env);
}
target_ulong helper_mfc0_tcstatus (void)
{
return env->active_tc.CP0_TCStatus;
}
target_ulong helper_mftc0_tcstatus(void)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(&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 (void)
{
return env->active_tc.CP0_TCBind;
}
target_ulong helper_mftc0_tcbind(void)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(&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 (void)
{
return env->active_tc.PC;
}
target_ulong helper_mftc0_tcrestart(void)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(&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 (void)
{
return env->active_tc.CP0_TCHalt;
}
target_ulong helper_mftc0_tchalt(void)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(&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 (void)
{
return env->active_tc.CP0_TCContext;
}
target_ulong helper_mftc0_tccontext(void)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(&other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCContext;
else
return other->tcs[other_tc].CP0_TCContext;