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-rw-r--r--translate-all.c173
1 files changed, 83 insertions, 90 deletions
diff --git a/translate-all.c b/translate-all.c
index 3b5fc7c90..5759974d4 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -96,12 +96,16 @@ typedef struct PageDesc {
# define L1_MAP_ADDR_SPACE_BITS TARGET_VIRT_ADDR_SPACE_BITS
#endif
+/* Size of the L2 (and L3, etc) page tables. */
+#define V_L2_BITS 10
+#define V_L2_SIZE (1 << V_L2_BITS)
+
/* The bits remaining after N lower levels of page tables. */
#define V_L1_BITS_REM \
- ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS)
+ ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % V_L2_BITS)
#if V_L1_BITS_REM < 4
-#define V_L1_BITS (V_L1_BITS_REM + L2_BITS)
+#define V_L1_BITS (V_L1_BITS_REM + V_L2_BITS)
#else
#define V_L1_BITS V_L1_BITS_REM
#endif
@@ -193,9 +197,10 @@ int cpu_gen_code(CPUArchState *env, TranslationBlock *tb, int *gen_code_size_ptr
/* The cpu state corresponding to 'searched_pc' is restored.
*/
-static int cpu_restore_state_from_tb(TranslationBlock *tb, CPUArchState *env,
+static int cpu_restore_state_from_tb(CPUState *cpu, TranslationBlock *tb,
uintptr_t searched_pc)
{
+ CPUArchState *env = cpu->env_ptr;
TCGContext *s = &tcg_ctx;
int j;
uintptr_t tc_ptr;
@@ -212,9 +217,9 @@ static int cpu_restore_state_from_tb(TranslationBlock *tb, CPUArchState *env,
if (use_icount) {
/* Reset the cycle counter to the start of the block. */
- env->icount_decr.u16.low += tb->icount;
+ cpu->icount_decr.u16.low += tb->icount;
/* Clear the IO flag. */
- env->can_do_io = 0;
+ cpu->can_do_io = 0;
}
/* find opc index corresponding to search_pc */
@@ -237,7 +242,7 @@ static int cpu_restore_state_from_tb(TranslationBlock *tb, CPUArchState *env,
while (s->gen_opc_instr_start[j] == 0) {
j--;
}
- env->icount_decr.u16.low -= s->gen_opc_icount[j];
+ cpu->icount_decr.u16.low -= s->gen_opc_icount[j];
restore_state_to_opc(env, tb, j);
@@ -248,13 +253,13 @@ static int cpu_restore_state_from_tb(TranslationBlock *tb, CPUArchState *env,
return 0;
}
-bool cpu_restore_state(CPUArchState *env, uintptr_t retaddr)
+bool cpu_restore_state(CPUState *cpu, uintptr_t retaddr)
{
TranslationBlock *tb;
tb = tb_find_pc(retaddr);
if (tb) {
- cpu_restore_state_from_tb(tb, env, retaddr);
+ cpu_restore_state_from_tb(cpu, tb, retaddr);
return true;
}
return false;
@@ -285,17 +290,15 @@ static inline void map_exec(void *addr, long size)
}
#endif
-static void page_init(void)
+void page_size_init(void)
{
/* NOTE: we can always suppose that qemu_host_page_size >=
TARGET_PAGE_SIZE */
#ifdef _WIN32
- {
- SYSTEM_INFO system_info;
+ SYSTEM_INFO system_info;
- GetSystemInfo(&system_info);
- qemu_real_host_page_size = system_info.dwPageSize;
- }
+ GetSystemInfo(&system_info);
+ qemu_real_host_page_size = system_info.dwPageSize;
#else
qemu_real_host_page_size = getpagesize();
#endif
@@ -306,7 +309,11 @@ static void page_init(void)
qemu_host_page_size = TARGET_PAGE_SIZE;
}
qemu_host_page_mask = ~(qemu_host_page_size - 1);
+}
+static void page_init(void)
+{
+ page_size_init();
#if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY)
{
#ifdef HAVE_KINFO_GETVMMAP
@@ -395,18 +402,18 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc)
lp = l1_map + ((index >> V_L1_SHIFT) & (V_L1_SIZE - 1));
/* Level 2..N-1. */
- for (i = V_L1_SHIFT / L2_BITS - 1; i > 0; i--) {
+ for (i = V_L1_SHIFT / V_L2_BITS - 1; i > 0; i--) {
void **p = *lp;
if (p == NULL) {
if (!alloc) {
return NULL;
}
- ALLOC(p, sizeof(void *) * L2_SIZE);
+ ALLOC(p, sizeof(void *) * V_L2_SIZE);
*lp = p;
}
- lp = p + ((index >> (i * L2_BITS)) & (L2_SIZE - 1));
+ lp = p + ((index >> (i * V_L2_BITS)) & (V_L2_SIZE - 1));
}
pd = *lp;
@@ -414,13 +421,13 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc)
if (!alloc) {
return NULL;
}
- ALLOC(pd, sizeof(PageDesc) * L2_SIZE);
+ ALLOC(pd, sizeof(PageDesc) * V_L2_SIZE);
*lp = pd;
}
#undef ALLOC
- return pd + (index & (L2_SIZE - 1));
+ return pd + (index & (V_L2_SIZE - 1));
}
static inline PageDesc *page_find(tb_page_addr_t index)
@@ -655,14 +662,14 @@ static void page_flush_tb_1(int level, void **lp)
if (level == 0) {
PageDesc *pd = *lp;
- for (i = 0; i < L2_SIZE; ++i) {
+ for (i = 0; i < V_L2_SIZE; ++i) {
pd[i].first_tb = NULL;
invalidate_page_bitmap(pd + i);
}
} else {
void **pp = *lp;
- for (i = 0; i < L2_SIZE; ++i) {
+ for (i = 0; i < V_L2_SIZE; ++i) {
page_flush_tb_1(level - 1, pp + i);
}
}
@@ -673,7 +680,7 @@ static void page_flush_tb(void)
int i;
for (i = 0; i < V_L1_SIZE; i++) {
- page_flush_tb_1(V_L1_SHIFT / L2_BITS - 1, l1_map + i);
+ page_flush_tb_1(V_L1_SHIFT / V_L2_BITS - 1, l1_map + i);
}
}
@@ -681,7 +688,7 @@ static void page_flush_tb(void)
/* XXX: tb_flush is currently not thread safe */
void tb_flush(CPUArchState *env1)
{
- CPUState *cpu;
+ CPUState *cpu = ENV_GET_CPU(env1);
#if defined(DEBUG_FLUSH)
printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n",
@@ -692,18 +699,15 @@ void tb_flush(CPUArchState *env1)
#endif
if ((unsigned long)(tcg_ctx.code_gen_ptr - tcg_ctx.code_gen_buffer)
> tcg_ctx.code_gen_buffer_size) {
- cpu_abort(env1, "Internal error: code buffer overflow\n");
+ cpu_abort(cpu, "Internal error: code buffer overflow\n");
}
tcg_ctx.tb_ctx.nb_tbs = 0;
- for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
- CPUArchState *env = cpu->env_ptr;
-
- memset(env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
+ CPU_FOREACH(cpu) {
+ memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache));
}
- memset(tcg_ctx.tb_ctx.tb_phys_hash, 0,
- CODE_GEN_PHYS_HASH_SIZE * sizeof(void *));
+ memset(tcg_ctx.tb_ctx.tb_phys_hash, 0, sizeof(tcg_ctx.tb_ctx.tb_phys_hash));
page_flush_tb();
tcg_ctx.code_gen_ptr = tcg_ctx.code_gen_buffer;
@@ -850,11 +854,9 @@ void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr)
/* remove the TB from the hash list */
h = tb_jmp_cache_hash_func(tb->pc);
- for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
- CPUArchState *env = cpu->env_ptr;
-
- if (env->tb_jmp_cache[h] == tb) {
- env->tb_jmp_cache[h] = NULL;
+ CPU_FOREACH(cpu) {
+ if (cpu->tb_jmp_cache[h] == tb) {
+ cpu->tb_jmp_cache[h] = NULL;
}
}
@@ -936,10 +938,11 @@ static void build_page_bitmap(PageDesc *p)
}
}
-TranslationBlock *tb_gen_code(CPUArchState *env,
+TranslationBlock *tb_gen_code(CPUState *cpu,
target_ulong pc, target_ulong cs_base,
int flags, int cflags)
{
+ CPUArchState *env = cpu->env_ptr;
TranslationBlock *tb;
uint8_t *tc_ptr;
tb_page_addr_t phys_pc, phys_page2;
@@ -1004,7 +1007,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
{
TranslationBlock *tb, *tb_next, *saved_tb;
CPUState *cpu = current_cpu;
-#if defined(TARGET_HAS_PRECISE_SMC) || !defined(CONFIG_USER_ONLY)
+#if defined(TARGET_HAS_PRECISE_SMC)
CPUArchState *env = NULL;
#endif
tb_page_addr_t tb_start, tb_end;
@@ -1029,7 +1032,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
/* build code bitmap */
build_page_bitmap(p);
}
-#if defined(TARGET_HAS_PRECISE_SMC) || !defined(CONFIG_USER_ONLY)
+#if defined(TARGET_HAS_PRECISE_SMC)
if (cpu != NULL) {
env = cpu->env_ptr;
}
@@ -1058,9 +1061,9 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
if (current_tb_not_found) {
current_tb_not_found = 0;
current_tb = NULL;
- if (env->mem_io_pc) {
+ if (cpu->mem_io_pc) {
/* now we have a real cpu fault */
- current_tb = tb_find_pc(env->mem_io_pc);
+ current_tb = tb_find_pc(cpu->mem_io_pc);
}
}
if (current_tb == tb &&
@@ -1072,7 +1075,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
restore the CPU state */
current_tb_modified = 1;
- cpu_restore_state_from_tb(current_tb, env, env->mem_io_pc);
+ cpu_restore_state_from_tb(cpu, current_tb, cpu->mem_io_pc);
cpu_get_tb_cpu_state(env, &current_pc, &current_cs_base,
&current_flags);
}
@@ -1099,7 +1102,7 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
if (!p->first_tb) {
invalidate_page_bitmap(p);
if (is_cpu_write_access) {
- tlb_unprotect_code_phys(env, start, env->mem_io_vaddr);
+ tlb_unprotect_code_phys(cpu, start, cpu->mem_io_vaddr);
}
}
#endif
@@ -1109,8 +1112,8 @@ void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end,
modifying the memory. It will ensure that it cannot modify
itself */
cpu->current_tb = NULL;
- tb_gen_code(env, current_pc, current_cs_base, current_flags, 1);
- cpu_resume_from_signal(env, NULL);
+ tb_gen_code(cpu, current_pc, current_cs_base, current_flags, 1);
+ cpu_resume_from_signal(cpu, NULL);
}
#endif
}
@@ -1191,7 +1194,7 @@ static void tb_invalidate_phys_page(tb_page_addr_t addr,
restore the CPU state */
current_tb_modified = 1;
- cpu_restore_state_from_tb(current_tb, env, pc);
+ cpu_restore_state_from_tb(cpu, current_tb, pc);
cpu_get_tb_cpu_state(env, &current_pc, &current_cs_base,
&current_flags);
}
@@ -1206,11 +1209,11 @@ static void tb_invalidate_phys_page(tb_page_addr_t addr,
modifying the memory. It will ensure that it cannot modify
itself */
cpu->current_tb = NULL;
- tb_gen_code(env, current_pc, current_cs_base, current_flags, 1);
+ tb_gen_code(cpu, current_pc, current_cs_base, current_flags, 1);
if (locked) {
mmap_unlock();
}
- cpu_resume_from_signal(env, puc);
+ cpu_resume_from_signal(cpu, puc);
}
#endif
}
@@ -1318,18 +1321,6 @@ static void tb_link_page(TranslationBlock *tb, tb_page_addr_t phys_pc,
mmap_unlock();
}
-#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
-/* check whether the given addr is in TCG generated code buffer or not */
-bool is_tcg_gen_code(uintptr_t tc_ptr)
-{
- /* This can be called during code generation, code_gen_buffer_size
- is used instead of code_gen_ptr for upper boundary checking */
- return (tc_ptr >= (uintptr_t)tcg_ctx.code_gen_buffer &&
- tc_ptr < (uintptr_t)(tcg_ctx.code_gen_buffer +
- tcg_ctx.code_gen_buffer_size));
-}
-#endif
-
/* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr <
tb[1].tc_ptr. Return NULL if not found */
static TranslationBlock *tb_find_pc(uintptr_t tc_ptr)
@@ -1364,13 +1355,13 @@ static TranslationBlock *tb_find_pc(uintptr_t tc_ptr)
}
#if defined(TARGET_HAS_ICE) && !defined(CONFIG_USER_ONLY)
-void tb_invalidate_phys_addr(hwaddr addr)
+void tb_invalidate_phys_addr(AddressSpace *as, hwaddr addr)
{
ram_addr_t ram_addr;
MemoryRegion *mr;
hwaddr l = 1;
- mr = address_space_translate(&address_space_memory, addr, &addr, &l, false);
+ mr = address_space_translate(as, addr, &addr, &l, false);
if (!(memory_region_is_ram(mr)
|| memory_region_is_romd(mr))) {
return;
@@ -1381,16 +1372,16 @@ void tb_invalidate_phys_addr(hwaddr addr)
}
#endif /* TARGET_HAS_ICE && !defined(CONFIG_USER_ONLY) */
-void tb_check_watchpoint(CPUArchState *env)
+void tb_check_watchpoint(CPUState *cpu)
{
TranslationBlock *tb;
- tb = tb_find_pc(env->mem_io_pc);
+ tb = tb_find_pc(cpu->mem_io_pc);
if (!tb) {
- cpu_abort(env, "check_watchpoint: could not find TB for pc=%p",
- (void *)env->mem_io_pc);
+ cpu_abort(cpu, "check_watchpoint: could not find TB for pc=%p",
+ (void *)cpu->mem_io_pc);
}
- cpu_restore_state_from_tb(tb, env, env->mem_io_pc);
+ cpu_restore_state_from_tb(cpu, tb, cpu->mem_io_pc);
tb_phys_invalidate(tb, -1);
}
@@ -1398,7 +1389,6 @@ void tb_check_watchpoint(CPUArchState *env)
/* mask must never be zero, except for A20 change call */
static void tcg_handle_interrupt(CPUState *cpu, int mask)
{
- CPUArchState *env = cpu->env_ptr;
int old_mask;
old_mask = cpu->interrupt_request;
@@ -1414,10 +1404,10 @@ static void tcg_handle_interrupt(CPUState *cpu, int mask)
}
if (use_icount) {
- env->icount_decr.u16.high = 0xffff;
- if (!can_do_io(env)
+ cpu->icount_decr.u16.high = 0xffff;
+ if (!cpu_can_do_io(cpu)
&& (mask & ~old_mask) != 0) {
- cpu_abort(env, "Raised interrupt while not in I/O function");
+ cpu_abort(cpu, "Raised interrupt while not in I/O function");
}
} else {
cpu->tcg_exit_req = 1;
@@ -1428,8 +1418,11 @@ CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt;
/* in deterministic execution mode, instructions doing device I/Os
must be at the end of the TB */
-void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
+void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
{
+#if defined(TARGET_MIPS) || defined(TARGET_SH4)
+ CPUArchState *env = cpu->env_ptr;
+#endif
TranslationBlock *tb;
uint32_t n, cflags;
target_ulong pc, cs_base;
@@ -1437,14 +1430,14 @@ void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
tb = tb_find_pc(retaddr);
if (!tb) {
- cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p",
+ cpu_abort(cpu, "cpu_io_recompile: could not find TB for pc=%p",
(void *)retaddr);
}
- n = env->icount_decr.u16.low + tb->icount;
- cpu_restore_state_from_tb(tb, env, retaddr);
+ n = cpu->icount_decr.u16.low + tb->icount;
+ cpu_restore_state_from_tb(cpu, tb, retaddr);
/* Calculate how many instructions had been executed before the fault
occurred. */
- n = n - env->icount_decr.u16.low;
+ n = n - cpu->icount_decr.u16.low;
/* Generate a new TB ending on the I/O insn. */
n++;
/* On MIPS and SH, delay slot instructions can only be restarted if
@@ -1454,20 +1447,20 @@ void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
#if defined(TARGET_MIPS)
if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) {
env->active_tc.PC -= 4;
- env->icount_decr.u16.low++;
+ cpu->icount_decr.u16.low++;
env->hflags &= ~MIPS_HFLAG_BMASK;
}
#elif defined(TARGET_SH4)
if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0
&& n > 1) {
env->pc -= 2;
- env->icount_decr.u16.low++;
+ cpu->icount_decr.u16.low++;
env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL);
}
#endif
/* This should never happen. */
if (n > CF_COUNT_MASK) {
- cpu_abort(env, "TB too big during recompile");
+ cpu_abort(cpu, "TB too big during recompile");
}
cflags = n | CF_LAST_IO;
@@ -1477,27 +1470,27 @@ void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
tb_phys_invalidate(tb, -1);
/* FIXME: In theory this could raise an exception. In practice
we have already translated the block once so it's probably ok. */
- tb_gen_code(env, pc, cs_base, flags, cflags);
+ tb_gen_code(cpu, pc, cs_base, flags, cflags);
/* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not
the first in the TB) then we end up generating a whole new TB and
repeating the fault, which is horribly inefficient.
Better would be to execute just this insn uncached, or generate a
second new TB. */
- cpu_resume_from_signal(env, NULL);
+ cpu_resume_from_signal(cpu, NULL);
}
-void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr)
+void tb_flush_jmp_cache(CPUState *cpu, target_ulong addr)
{
unsigned int i;
/* Discard jump cache entries for any tb which might potentially
overlap the flushed page. */
i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE);
- memset(&env->tb_jmp_cache[i], 0,
+ memset(&cpu->tb_jmp_cache[i], 0,
TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
i = tb_jmp_cache_hash_page(addr);
- memset(&env->tb_jmp_cache[i], 0,
+ memset(&cpu->tb_jmp_cache[i], 0,
TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *));
}
@@ -1612,7 +1605,7 @@ static int walk_memory_regions_1(struct walk_memory_regions_data *data,
if (level == 0) {
PageDesc *pd = *lp;
- for (i = 0; i < L2_SIZE; ++i) {
+ for (i = 0; i < V_L2_SIZE; ++i) {
int prot = pd[i].flags;
pa = base | (i << TARGET_PAGE_BITS);
@@ -1626,9 +1619,9 @@ static int walk_memory_regions_1(struct walk_memory_regions_data *data,
} else {
void **pp = *lp;
- for (i = 0; i < L2_SIZE; ++i) {
+ for (i = 0; i < V_L2_SIZE; ++i) {
pa = base | ((abi_ulong)i <<
- (TARGET_PAGE_BITS + L2_BITS * level));
+ (TARGET_PAGE_BITS + V_L2_BITS * level));
rc = walk_memory_regions_1(data, pa, level - 1, pp + i);
if (rc != 0) {
return rc;
@@ -1651,7 +1644,7 @@ int walk_memory_regions(void *priv, walk_memory_regions_fn fn)
for (i = 0; i < V_L1_SIZE; i++) {
int rc = walk_memory_regions_1(&data, (abi_ulong)i << V_L1_SHIFT,
- V_L1_SHIFT / L2_BITS - 1, l1_map + i);
+ V_L1_SHIFT / V_L2_BITS - 1, l1_map + i);
if (rc != 0) {
return rc;
@@ -1679,8 +1672,9 @@ static int dump_region(void *priv, abi_ulong start,
/* dump memory mappings */
void page_dump(FILE *f)
{
- (void) fprintf(f, "%-8s %-8s %-8s %s\n",
- "start", "end", "size", "prot");
+ const int length = sizeof(abi_ulong) * 2;
+ (void) fprintf(f, "%-*s %-*s %-*s %s\n",
+ length, "start", length, "end", length, "size", "prot");
walk_memory_regions(f, dump_region);
}
@@ -1783,7 +1777,6 @@ int page_check_range(target_ulong start, target_ulong len, int flags)
return -1;
}
}
- return 0;
}
}
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 19:55:41 +0000