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cpu: Move tb_jmp_cache field from CPU_COMMON to CPUState 

Clear it on reset.

Signed-off-by: Andreas Färber <afaerber@suse.de>
master
Andreas Färber 2013-08-26 06:03:38 +02:00
parent 28ecfd7a62
commit 8cd70437f3
6 changed files with 16 additions and 16 deletions
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6
cpu-exec.c
View File

@ -118,6 +118,7 @@ static TranslationBlock *tb_find_slow(CPUArchState *env,
target_ulong cs_base,
uint64_t flags)
{
CPUState *cpu = ENV_GET_CPU(env);
TranslationBlock *tb, **ptb1;
unsigned int h;
tb_page_addr_t phys_pc, phys_page1;
@ -165,12 +166,13 @@ static TranslationBlock *tb_find_slow(CPUArchState *env,
tcg_ctx.tb_ctx.tb_phys_hash[h] = tb;
}
/* we add the TB in the virtual pc hash table */
env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb;
return tb;
}
static inline TranslationBlock *tb_find_fast(CPUArchState *env)
{
CPUState *cpu = ENV_GET_CPU(env);
TranslationBlock *tb;
target_ulong cs_base, pc;
int flags;
@ -179,7 +181,7 @@ static inline TranslationBlock *tb_find_fast(CPUArchState *env)
always be the same before a given translated block
is executed. */
cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
tb = cpu->tb_jmp_cache[tb_jmp_cache_hash_func(pc)];
if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base ||
tb->flags != flags)) {
tb = tb_find_slow(env, pc, cs_base, flags);

2
cputlb.c
View File

@ -58,7 +58,7 @@ void tlb_flush(CPUArchState *env, int flush_global)
cpu->current_tb = NULL;
memset(env->tlb_table, -1, sizeof(env->tlb_table));
memset(env->tb_jmp_cache, 0, sizeof(env->tb_jmp_cache));
memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache));
env->tlb_flush_addr = -1;
env->tlb_flush_mask = 0;

4
include/exec/cpu-defs.h
View File

@ -61,9 +61,6 @@ typedef uint64_t target_ulong;
#define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */
#define EXCP_YIELD 0x10004 /* cpu wants to yield timeslice to another */
#define TB_JMP_CACHE_BITS 12
#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
addresses on the same page. The top bits are the same. This allows
TLB invalidation to quickly clear a subset of the hash table. */
@ -135,7 +132,6 @@ typedef struct CPUWatchpoint {
#define CPU_COMMON \
/* soft mmu support */ \
CPU_COMMON_TLB \
struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \
\
/* from this point: preserved by CPU reset */ \
/* ice debug support */ \

4
include/qom/cpu.h
View File

@ -153,6 +153,9 @@ typedef struct icount_decr_u16 {
struct KVMState;
struct kvm_run;
#define TB_JMP_CACHE_BITS 12
#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
/**
* CPUState:
* @cpu_index: CPU index (informative).
@ -219,6 +222,7 @@ struct CPUState {
void *env_ptr; /* CPUArchState */
struct TranslationBlock *current_tb;
struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE];
struct GDBRegisterState *gdb_regs;
int gdb_num_regs;
int gdb_num_g_regs;

1
qom/cpu.c
View File

@ -244,6 +244,7 @@ static void cpu_common_reset(CPUState *cpu)
cpu->icount_extra = 0;
cpu->icount_decr.u32 = 0;
cpu->can_do_io = 0;
memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
}
static bool cpu_common_has_work(CPUState *cs)

15
translate-all.c
View File

@ -704,9 +704,7 @@ void tb_flush(CPUArchState *env1)
tcg_ctx.tb_ctx.nb_tbs = 0;
CPU_FOREACH(cpu) {
CPUArchState *env = cpu->env_ptr;
memset(env->tb_jmp_cache, 0, sizeof(env->tb_jmp_cache));
memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache));
}
memset(tcg_ctx.tb_ctx.tb_phys_hash, 0, sizeof(tcg_ctx.tb_ctx.tb_phys_hash));
@ -857,10 +855,8 @@ 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);
CPU_FOREACH(cpu) {
CPUArchState *env = cpu->env_ptr;
if (env->tb_jmp_cache[h] == tb) {
env->tb_jmp_cache[h] = NULL;
if (cpu->tb_jmp_cache[h] == tb) {
cpu->tb_jmp_cache[h] = NULL;
}
}
@ -1484,16 +1480,17 @@ void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr)
{
CPUState *cpu = ENV_GET_CPU(env);
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 *));
}