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ldst_helper.c
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ldst_helper.c
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/*
* Helpers for loads and stores
*
* Copyright (c) 2003-2005 Fabrice Bellard
*
* 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 "qemu/osdep.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "asi.h"
//#define DEBUG_MMU
//#define DEBUG_MXCC
//#define DEBUG_UNALIGNED
//#define DEBUG_UNASSIGNED
//#define DEBUG_ASI
//#define DEBUG_CACHE_CONTROL
#ifdef DEBUG_MMU
#define DPRINTF_MMU(fmt, ...) \
do { printf("MMU: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_MMU(fmt, ...) do {} while (0)
#endif
#ifdef DEBUG_MXCC
#define DPRINTF_MXCC(fmt, ...) \
do { printf("MXCC: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_MXCC(fmt, ...) do {} while (0)
#endif
#ifdef DEBUG_ASI
#define DPRINTF_ASI(fmt, ...) \
do { printf("ASI: " fmt , ## __VA_ARGS__); } while (0)
#endif
#ifdef DEBUG_CACHE_CONTROL
#define DPRINTF_CACHE_CONTROL(fmt, ...) \
do { printf("CACHE_CONTROL: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_CACHE_CONTROL(fmt, ...) do {} while (0)
#endif
#ifdef TARGET_SPARC64
#ifndef TARGET_ABI32
#define AM_CHECK(env1) ((env1)->pstate & PS_AM)
#else
#define AM_CHECK(env1) (1)
#endif
#endif
#define QT0 (env->qt0)
#define QT1 (env->qt1)
#if defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY)
/* Calculates TSB pointer value for fault page size 8k or 64k */
static uint64_t ultrasparc_tsb_pointer(uint64_t tsb_register,
uint64_t tag_access_register,
int page_size)
{
uint64_t tsb_base = tsb_register & ~0x1fffULL;
int tsb_split = (tsb_register & 0x1000ULL) ? 1 : 0;
int tsb_size = tsb_register & 0xf;
/* discard lower 13 bits which hold tag access context */
uint64_t tag_access_va = tag_access_register & ~0x1fffULL;
/* now reorder bits */
uint64_t tsb_base_mask = ~0x1fffULL;
uint64_t va = tag_access_va;
/* move va bits to correct position */
if (page_size == 8*1024) {
va >>= 9;
} else if (page_size == 64*1024) {
va >>= 12;
}
if (tsb_size) {
tsb_base_mask <<= tsb_size;
}
/* calculate tsb_base mask and adjust va if split is in use */
if (tsb_split) {
if (page_size == 8*1024) {
va &= ~(1ULL << (13 + tsb_size));
} else if (page_size == 64*1024) {
va |= (1ULL << (13 + tsb_size));
}
tsb_base_mask <<= 1;
}
return ((tsb_base & tsb_base_mask) | (va & ~tsb_base_mask)) & ~0xfULL;
}
/* Calculates tag target register value by reordering bits
in tag access register */
static uint64_t ultrasparc_tag_target(uint64_t tag_access_register)
{
return ((tag_access_register & 0x1fff) << 48) | (tag_access_register >> 22);
}
static void replace_tlb_entry(SparcTLBEntry *tlb,
uint64_t tlb_tag, uint64_t tlb_tte,
CPUSPARCState *env1)
{
target_ulong mask, size, va, offset;
/* flush page range if translation is valid */
if (TTE_IS_VALID(tlb->tte)) {
CPUState *cs = CPU(sparc_env_get_cpu(env1));
mask = 0xffffffffffffe000ULL;
mask <<= 3 * ((tlb->tte >> 61) & 3);
size = ~mask + 1;
va = tlb->tag & mask;
for (offset = 0; offset < size; offset += TARGET_PAGE_SIZE) {
tlb_flush_page(cs, va + offset);
}
}
tlb->tag = tlb_tag;
tlb->tte = tlb_tte;
}
static void demap_tlb(SparcTLBEntry *tlb, target_ulong demap_addr,
const char *strmmu, CPUSPARCState *env1)
{
unsigned int i;
target_ulong mask;
uint64_t context;
int is_demap_context = (demap_addr >> 6) & 1;
/* demap context */
switch ((demap_addr >> 4) & 3) {
case 0: /* primary */
context = env1->dmmu.mmu_primary_context;
break;
case 1: /* secondary */
context = env1->dmmu.mmu_secondary_context;
break;
case 2: /* nucleus */
context = 0;
break;
case 3: /* reserved */
default:
return;
}
for (i = 0; i < 64; i++) {
if (TTE_IS_VALID(tlb[i].tte)) {
if (is_demap_context) {
/* will remove non-global entries matching context value */
if (TTE_IS_GLOBAL(tlb[i].tte) ||
!tlb_compare_context(&tlb[i], context)) {
continue;
}
} else {
/* demap page
will remove any entry matching VA */
mask = 0xffffffffffffe000ULL;
mask <<= 3 * ((tlb[i].tte >> 61) & 3);
if (!compare_masked(demap_addr, tlb[i].tag, mask)) {
continue;
}
/* entry should be global or matching context value */
if (!TTE_IS_GLOBAL(tlb[i].tte) &&
!tlb_compare_context(&tlb[i], context)) {
continue;
}
}
replace_tlb_entry(&tlb[i], 0, 0, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s demap invalidated entry [%02u]\n", strmmu, i);
dump_mmu(stdout, fprintf, env1);
#endif
}
}
}
static void replace_tlb_1bit_lru(SparcTLBEntry *tlb,
uint64_t tlb_tag, uint64_t tlb_tte,
const char *strmmu, CPUSPARCState *env1)
{
unsigned int i, replace_used;
/* Try replacing invalid entry */
for (i = 0; i < 64; i++) {
if (!TTE_IS_VALID(tlb[i].tte)) {
replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replaced invalid entry [%i]\n", strmmu, i);
dump_mmu(stdout, fprintf, env1);
#endif
return;
}
}
/* All entries are valid, try replacing unlocked entry */
for (replace_used = 0; replace_used < 2; ++replace_used) {
/* Used entries are not replaced on first pass */
for (i = 0; i < 64; i++) {
if (!TTE_IS_LOCKED(tlb[i].tte) && !TTE_IS_USED(tlb[i].tte)) {
replace_tlb_entry(&tlb[i], tlb_tag, tlb_tte, env1);
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replaced unlocked %s entry [%i]\n",
strmmu, (replace_used ? "used" : "unused"), i);
dump_mmu(stdout, fprintf, env1);
#endif
return;
}
}
/* Now reset used bit and search for unused entries again */
for (i = 0; i < 64; i++) {
TTE_SET_UNUSED(tlb[i].tte);
}
}
#ifdef DEBUG_MMU
DPRINTF_MMU("%s lru replacement failed: no entries available\n", strmmu);
#endif
/* error state? */
}
#endif
#if defined(TARGET_SPARC64) || defined(CONFIG_USER_ONLY)
static inline target_ulong address_mask(CPUSPARCState *env1, target_ulong addr)
{
#ifdef TARGET_SPARC64
if (AM_CHECK(env1)) {
addr &= 0xffffffffULL;
}
#endif
return addr;
}
#endif
#ifdef TARGET_SPARC64
/* returns true if access using this ASI is to have address translated by MMU
otherwise access is to raw physical address */
/* TODO: check sparc32 bits */
static inline int is_translating_asi(int asi)
{
/* Ultrasparc IIi translating asi
- note this list is defined by cpu implementation
*/
switch (asi) {
case 0x04 ... 0x11:
case 0x16 ... 0x19:
case 0x1E ... 0x1F:
case 0x24 ... 0x2C:
case 0x70 ... 0x73:
case 0x78 ... 0x79:
case 0x80 ... 0xFF:
return 1;
default:
return 0;
}
}
static inline target_ulong asi_address_mask(CPUSPARCState *env,
int asi, target_ulong addr)
{
if (is_translating_asi(asi)) {
return address_mask(env, addr);
} else {
return addr;
}
}
#endif
void helper_check_align(CPUSPARCState *env, target_ulong addr, uint32_t align)
{
if (addr & align) {
#ifdef DEBUG_UNALIGNED
printf("Unaligned access to 0x" TARGET_FMT_lx " from 0x" TARGET_FMT_lx
"\n", addr, env->pc);
#endif
helper_raise_exception(env, TT_UNALIGNED);
}
}
#if !defined(TARGET_SPARC64) && !defined(CONFIG_USER_ONLY) && \
defined(DEBUG_MXCC)
static void dump_mxcc(CPUSPARCState *env)
{
printf("mxccdata: %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n",
env->mxccdata[0], env->mxccdata[1],
env->mxccdata[2], env->mxccdata[3]);
printf("mxccregs: %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n"
" %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64
"\n",
env->mxccregs[0], env->mxccregs[1],
env->mxccregs[2], env->mxccregs[3],
env->mxccregs[4], env->mxccregs[5],
env->mxccregs[6], env->mxccregs[7]);
}
#endif
#if (defined(TARGET_SPARC64) || !defined(CONFIG_USER_ONLY)) \
&& defined(DEBUG_ASI)
static void dump_asi(const char *txt, target_ulong addr, int asi, int size,
uint64_t r1)
{
switch (size) {
case 1:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %02" PRIx64 "\n", txt,
addr, asi, r1 & 0xff);
break;
case 2:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %04" PRIx64 "\n", txt,
addr, asi, r1 & 0xffff);
break;
case 4:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %08" PRIx64 "\n", txt,
addr, asi, r1 & 0xffffffff);
break;
case 8:
DPRINTF_ASI("%s "TARGET_FMT_lx " asi 0x%02x = %016" PRIx64 "\n", txt,
addr, asi, r1);
break;
}
}
#endif
#ifndef TARGET_SPARC64
#ifndef CONFIG_USER_ONLY
/* Leon3 cache control */
static void leon3_cache_control_st(CPUSPARCState *env, target_ulong addr,
uint64_t val, int size)
{
DPRINTF_CACHE_CONTROL("st addr:%08x, val:%" PRIx64 ", size:%d\n",
addr, val, size);
if (size != 4) {
DPRINTF_CACHE_CONTROL("32bits only\n");
return;
}
switch (addr) {
case 0x00: /* Cache control */
/* These values must always be read as zeros */
val &= ~CACHE_CTRL_FD;
val &= ~CACHE_CTRL_FI;
val &= ~CACHE_CTRL_IB;
val &= ~CACHE_CTRL_IP;
val &= ~CACHE_CTRL_DP;
env->cache_control = val;
break;
case 0x04: /* Instruction cache configuration */
case 0x08: /* Data cache configuration */
/* Read Only */
break;
default:
DPRINTF_CACHE_CONTROL("write unknown register %08x\n", addr);
break;
};
}
static uint64_t leon3_cache_control_ld(CPUSPARCState *env, target_ulong addr,
int size)
{
uint64_t ret = 0;
if (size != 4) {
DPRINTF_CACHE_CONTROL("32bits only\n");
return 0;
}
switch (addr) {
case 0x00: /* Cache control */
ret = env->cache_control;
break;
/* Configuration registers are read and only always keep those
predefined values */
case 0x04: /* Instruction cache configuration */
ret = 0x10220000;
break;
case 0x08: /* Data cache configuration */
ret = 0x18220000;
break;
default:
DPRINTF_CACHE_CONTROL("read unknown register %08x\n", addr);
break;
};
DPRINTF_CACHE_CONTROL("ld addr:%08x, ret:0x%" PRIx64 ", size:%d\n",
addr, ret, size);
return ret;
}
uint64_t helper_ld_asi(CPUSPARCState *env, target_ulong addr, int asi, int size,
int sign)
{
CPUState *cs = CPU(sparc_env_get_cpu(env));
uint64_t ret = 0;
#if defined(DEBUG_MXCC) || defined(DEBUG_ASI)
uint32_t last_addr = addr;
#endif
helper_check_align(env, addr, size - 1);
switch (asi) {
case ASI_M_MXCC: /* SuperSparc MXCC registers, or... */
/* case ASI_LEON_CACHEREGS: Leon3 cache control */
switch (addr) {
case 0x00: /* Leon3 Cache Control */
case 0x08: /* Leon3 Instruction Cache config */
case 0x0C: /* Leon3 Date Cache config */
if (env->def->features & CPU_FEATURE_CACHE_CTRL) {
ret = leon3_cache_control_ld(env, addr, size);
}
break;
case 0x01c00a00: /* MXCC control register */
if (size == 8) {
ret = env->mxccregs[3];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00a04: /* MXCC control register */
if (size == 4) {
ret = env->mxccregs[3];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00c00: /* Module reset register */
if (size == 8) {
ret = env->mxccregs[5];
/* should we do something here? */
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00f00: /* MBus port address register */
if (size == 8) {
ret = env->mxccregs[7];
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
default:
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented address, size: %d\n", addr,
size);
break;
}
DPRINTF_MXCC("asi = %d, size = %d, sign = %d, "
"addr = %08x -> ret = %" PRIx64 ","
"addr = %08x\n", asi, size, sign, last_addr, ret, addr);
#ifdef DEBUG_MXCC
dump_mxcc(env);
#endif
break;
case ASI_M_FLUSH_PROBE: /* SuperSparc MMU probe */
case ASI_LEON_MMUFLUSH: /* LEON3 MMU probe */
{
int mmulev;
mmulev = (addr >> 8) & 15;
if (mmulev > 4) {
ret = 0;
} else {
ret = mmu_probe(env, addr, mmulev);
}
DPRINTF_MMU("mmu_probe: 0x%08x (lev %d) -> 0x%08" PRIx64 "\n",
addr, mmulev, ret);
}
break;
case ASI_M_MMUREGS: /* SuperSparc MMU regs */
case ASI_LEON_MMUREGS: /* LEON3 MMU regs */
{
int reg = (addr >> 8) & 0x1f;
ret = env->mmuregs[reg];
if (reg == 3) { /* Fault status cleared on read */
env->mmuregs[3] = 0;
} else if (reg == 0x13) { /* Fault status read */
ret = env->mmuregs[3];
} else if (reg == 0x14) { /* Fault address read */
ret = env->mmuregs[4];
}
DPRINTF_MMU("mmu_read: reg[%d] = 0x%08" PRIx64 "\n", reg, ret);
}
break;
case ASI_M_TLBDIAG: /* Turbosparc ITLB Diagnostic */
case ASI_M_DIAGS: /* Turbosparc DTLB Diagnostic */
case ASI_M_IODIAG: /* Turbosparc IOTLB Diagnostic */
break;
case ASI_KERNELTXT: /* Supervisor code access */
switch (size) {
case 1:
ret = cpu_ldub_code(env, addr);
break;
case 2:
ret = cpu_lduw_code(env, addr);
break;
default:
case 4:
ret = cpu_ldl_code(env, addr);
break;
case 8:
ret = cpu_ldq_code(env, addr);
break;
}
break;
case ASI_USERDATA: /* User data access */
switch (size) {
case 1:
ret = cpu_ldub_user(env, addr);
break;
case 2:
ret = cpu_lduw_user(env, addr);
break;
default:
case 4:
ret = cpu_ldl_user(env, addr);
break;
case 8:
ret = cpu_ldq_user(env, addr);
break;
}
break;
case ASI_KERNELDATA: /* Supervisor data access */
case ASI_P: /* Implicit primary context data access (v9 only?) */
switch (size) {
case 1:
ret = cpu_ldub_kernel(env, addr);
break;
case 2:
ret = cpu_lduw_kernel(env, addr);
break;
default:
case 4:
ret = cpu_ldl_kernel(env, addr);
break;
case 8:
ret = cpu_ldq_kernel(env, addr);
break;
}
break;
case ASI_M_TXTC_TAG: /* SparcStation 5 I-cache tag */
case ASI_M_TXTC_DATA: /* SparcStation 5 I-cache data */
case ASI_M_DATAC_TAG: /* SparcStation 5 D-cache tag */
case ASI_M_DATAC_DATA: /* SparcStation 5 D-cache data */
break;
case ASI_M_BYPASS: /* MMU passthrough */
case ASI_LEON_BYPASS: /* LEON MMU passthrough */
switch (size) {
case 1:
ret = ldub_phys(cs->as, addr);
break;
case 2:
ret = lduw_phys(cs->as, addr);
break;
default:
case 4:
ret = ldl_phys(cs->as, addr);
break;
case 8:
ret = ldq_phys(cs->as, addr);
break;
}
break;
case 0x21 ... 0x2f: /* MMU passthrough, 0x100000000 to 0xfffffffff */
switch (size) {
case 1:
ret = ldub_phys(cs->as, (hwaddr)addr
| ((hwaddr)(asi & 0xf) << 32));
break;
case 2:
ret = lduw_phys(cs->as, (hwaddr)addr
| ((hwaddr)(asi & 0xf) << 32));
break;
default:
case 4:
ret = ldl_phys(cs->as, (hwaddr)addr
| ((hwaddr)(asi & 0xf) << 32));
break;
case 8:
ret = ldq_phys(cs->as, (hwaddr)addr
| ((hwaddr)(asi & 0xf) << 32));
break;
}
break;
case 0x30: /* Turbosparc secondary cache diagnostic */
case 0x31: /* Turbosparc RAM snoop */
case 0x32: /* Turbosparc page table descriptor diagnostic */
case 0x39: /* data cache diagnostic register */
ret = 0;
break;
case 0x38: /* SuperSPARC MMU Breakpoint Control Registers */
{
int reg = (addr >> 8) & 3;
switch (reg) {
case 0: /* Breakpoint Value (Addr) */
ret = env->mmubpregs[reg];
break;
case 1: /* Breakpoint Mask */
ret = env->mmubpregs[reg];
break;
case 2: /* Breakpoint Control */
ret = env->mmubpregs[reg];
break;
case 3: /* Breakpoint Status */
ret = env->mmubpregs[reg];
env->mmubpregs[reg] = 0ULL;
break;
}
DPRINTF_MMU("read breakpoint reg[%d] 0x%016" PRIx64 "\n", reg,
ret);
}
break;
case 0x49: /* SuperSPARC MMU Counter Breakpoint Value */
ret = env->mmubpctrv;
break;
case 0x4a: /* SuperSPARC MMU Counter Breakpoint Control */
ret = env->mmubpctrc;
break;
case 0x4b: /* SuperSPARC MMU Counter Breakpoint Status */
ret = env->mmubpctrs;
break;
case 0x4c: /* SuperSPARC MMU Breakpoint Action */
ret = env->mmubpaction;
break;
case ASI_USERTXT: /* User code access, XXX */
default:
cpu_unassigned_access(cs, addr, false, false, asi, size);
ret = 0;
break;
}
if (sign) {
switch (size) {
case 1:
ret = (int8_t) ret;
break;
case 2:
ret = (int16_t) ret;
break;
case 4:
ret = (int32_t) ret;
break;
default:
break;
}
}
#ifdef DEBUG_ASI
dump_asi("read ", last_addr, asi, size, ret);
#endif
return ret;
}
void helper_st_asi(CPUSPARCState *env, target_ulong addr, uint64_t val, int asi,
int size)
{
SPARCCPU *cpu = sparc_env_get_cpu(env);
CPUState *cs = CPU(cpu);
helper_check_align(env, addr, size - 1);
switch (asi) {
case ASI_M_MXCC: /* SuperSparc MXCC registers, or... */
/* case ASI_LEON_CACHEREGS: Leon3 cache control */
switch (addr) {
case 0x00: /* Leon3 Cache Control */
case 0x08: /* Leon3 Instruction Cache config */
case 0x0C: /* Leon3 Date Cache config */
if (env->def->features & CPU_FEATURE_CACHE_CTRL) {
leon3_cache_control_st(env, addr, val, size);
}
break;
case 0x01c00000: /* MXCC stream data register 0 */
if (size == 8) {
env->mxccdata[0] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00008: /* MXCC stream data register 1 */
if (size == 8) {
env->mxccdata[1] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00010: /* MXCC stream data register 2 */
if (size == 8) {
env->mxccdata[2] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00018: /* MXCC stream data register 3 */
if (size == 8) {
env->mxccdata[3] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00100: /* MXCC stream source */
if (size == 8) {
env->mxccregs[0] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
env->mxccdata[0] = ldq_phys(cs->as,
(env->mxccregs[0] & 0xffffffffULL) +
0);
env->mxccdata[1] = ldq_phys(cs->as,
(env->mxccregs[0] & 0xffffffffULL) +
8);
env->mxccdata[2] = ldq_phys(cs->as,
(env->mxccregs[0] & 0xffffffffULL) +
16);
env->mxccdata[3] = ldq_phys(cs->as,
(env->mxccregs[0] & 0xffffffffULL) +
24);
break;
case 0x01c00200: /* MXCC stream destination */
if (size == 8) {
env->mxccregs[1] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
stq_phys(cs->as, (env->mxccregs[1] & 0xffffffffULL) + 0,
env->mxccdata[0]);
stq_phys(cs->as, (env->mxccregs[1] & 0xffffffffULL) + 8,
env->mxccdata[1]);
stq_phys(cs->as, (env->mxccregs[1] & 0xffffffffULL) + 16,
env->mxccdata[2]);
stq_phys(cs->as, (env->mxccregs[1] & 0xffffffffULL) + 24,
env->mxccdata[3]);
break;
case 0x01c00a00: /* MXCC control register */
if (size == 8) {
env->mxccregs[3] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00a04: /* MXCC control register */
if (size == 4) {
env->mxccregs[3] = (env->mxccregs[3] & 0xffffffff00000000ULL)
| val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00e00: /* MXCC error register */
/* writing a 1 bit clears the error */
if (size == 8) {
env->mxccregs[6] &= ~val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
case 0x01c00f00: /* MBus port address register */
if (size == 8) {
env->mxccregs[7] = val;
} else {
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented access size: %d\n", addr,
size);
}
break;
default:
qemu_log_mask(LOG_UNIMP,
"%08x: unimplemented address, size: %d\n", addr,
size);
break;
}
DPRINTF_MXCC("asi = %d, size = %d, addr = %08x, val = %" PRIx64 "\n",
asi, size, addr, val);
#ifdef DEBUG_MXCC
dump_mxcc(env);
#endif
break;
case ASI_M_FLUSH_PROBE: /* SuperSparc MMU flush */
case ASI_LEON_MMUFLUSH: /* LEON3 MMU flush */
{
int mmulev;
mmulev = (addr >> 8) & 15;
DPRINTF_MMU("mmu flush level %d\n", mmulev);
switch (mmulev) {
case 0: /* flush page */
tlb_flush_page(CPU(cpu), addr & 0xfffff000);
break;
case 1: /* flush segment (256k) */
case 2: /* flush region (16M) */
case 3: /* flush context (4G) */
case 4: /* flush entire */
tlb_flush(CPU(cpu), 1);
break;
default:
break;
}
#ifdef DEBUG_MMU
dump_mmu(stdout, fprintf, env);
#endif
}
break;
case ASI_M_MMUREGS: /* write MMU regs */
case ASI_LEON_MMUREGS: /* LEON3 write MMU regs */
{
int reg = (addr >> 8) & 0x1f;
uint32_t oldreg;
oldreg = env->mmuregs[reg];
switch (reg) {
case 0: /* Control Register */
env->mmuregs[reg] = (env->mmuregs[reg] & 0xff000000) |
(val & 0x00ffffff);
/* Mappings generated during no-fault mode or MMU
disabled mode are invalid in normal mode */
if ((oldreg & (MMU_E | MMU_NF | env->def->mmu_bm)) !=
(env->mmuregs[reg] & (MMU_E | MMU_NF | env->def->mmu_bm))) {
tlb_flush(CPU(cpu), 1);
}
break;
case 1: /* Context Table Pointer Register */
env->mmuregs[reg] = val & env->def->mmu_ctpr_mask;
break;
case 2: /* Context Register */
env->mmuregs[reg] = val & env->def->mmu_cxr_mask;
if (oldreg != env->mmuregs[reg]) {
/* we flush when the MMU context changes because
QEMU has no MMU context support */
tlb_flush(CPU(cpu), 1);
}
break;
case 3: /* Synchronous Fault Status Register with Clear */
case 4: /* Synchronous Fault Address Register */
break;
case 0x10: /* TLB Replacement Control Register */
env->mmuregs[reg] = val & env->def->mmu_trcr_mask;
break;
case 0x13: /* Synchronous Fault Status Register with Read
and Clear */
env->mmuregs[3] = val & env->def->mmu_sfsr_mask;
break;
case 0x14: /* Synchronous Fault Address Register */
env->mmuregs[4] = val;
break;
default:
env->mmuregs[reg] = val;
break;
}
if (oldreg != env->mmuregs[reg]) {
DPRINTF_MMU("mmu change reg[%d]: 0x%08x -> 0x%08x\n",
reg, oldreg, env->mmuregs[reg]);
}
#ifdef DEBUG_MMU
dump_mmu(stdout, fprintf, env);
#endif
}
break;
case ASI_M_TLBDIAG: /* Turbosparc ITLB Diagnostic */
case ASI_M_DIAGS: /* Turbosparc DTLB Diagnostic */
case ASI_M_IODIAG: /* Turbosparc IOTLB Diagnostic */
break;
case ASI_USERDATA: /* User data access */
switch (size) {
case 1:
cpu_stb_user(env, addr, val);
break;
case 2:
cpu_stw_user(env, addr, val);
break;
default:
case 4:
cpu_stl_user(env, addr, val);
break;
case 8:
cpu_stq_user(env, addr, val);
break;
}
break;
case ASI_KERNELDATA: /* Supervisor data access */
case ASI_P:
switch (size) {
case 1:
cpu_stb_kernel(env, addr, val);
break;
case 2:
cpu_stw_kernel(env, addr, val);
break;
default:
case 4:
cpu_stl_kernel(env, addr, val);
break;
case 8:
cpu_stq_kernel(env, addr, val);
break;
}
break;
case ASI_M_TXTC_TAG: /* I-cache tag */
case ASI_M_TXTC_DATA: /* I-cache data */
case ASI_M_DATAC_TAG: /* D-cache tag */
case ASI_M_DATAC_DATA: /* D-cache data */
case ASI_M_FLUSH_PAGE: /* I/D-cache flush page */
case ASI_M_FLUSH_SEG: /* I/D-cache flush segment */
case ASI_M_FLUSH_REGION: /* I/D-cache flush region */
case ASI_M_FLUSH_CTX: /* I/D-cache flush context */
case ASI_M_FLUSH_USER: /* I/D-cache flush user */
break;
case ASI_M_BCOPY: /* Block copy, sta access */
{
/* val = src
addr = dst
copy 32 bytes */
unsigned int i;
uint32_t src = val & ~3, dst = addr & ~3, temp;
for (i = 0; i < 32; i += 4, src += 4, dst += 4) {
temp = cpu_ldl_kernel(env, src);
cpu_stl_kernel(env, dst, temp);
}
}
break;
case ASI_M_BFILL: /* Block fill, stda access */
{
/* addr = dst
fill 32 bytes with val */
unsigned int i;
uint32_t dst = addr & ~7;
for (i = 0; i < 32; i += 8, dst += 8) {
cpu_stq_kernel(env, dst, val);
}
}
break;
case ASI_M_BYPASS: /* MMU passthrough */
case ASI_LEON_BYPASS: /* LEON MMU passthrough */