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exec-all: bring tb->invalid into tb->cflags 

This gets rid of a hole in struct TranslationBlock.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota 2017-07-10 20:03:50 -04:00 committed by Richard Henderson
parent f6bb84d531
commit 84f1c148da
4 changed files with 5 additions and 7 deletions
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4
accel/tcg/cpu-exec.c
View File

@ -294,7 +294,7 @@ static bool tb_cmp(const void *p, const void *d)
tb->cs_base == desc->cs_base &&
tb->flags == desc->flags &&
tb->trace_vcpu_dstate == desc->trace_vcpu_dstate &&
!atomic_read(&tb->invalid)) {
!(atomic_read(&tb->cflags) & CF_INVALID)) {
/* check next page if needed */
if (tb->page_addr[1] == -1) {
return true;
@ -412,7 +412,7 @@ static inline TranslationBlock *tb_find(CPUState *cpu,
tb_lock();
acquired_tb_lock = true;
}
if (!tb->invalid) {
if (!(tb->cflags & CF_INVALID)) {
tb_add_jump(last_tb, tb_exit, tb);
}
}

3
accel/tcg/translate-all.c
View File

@ -1073,7 +1073,7 @@ void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr)
assert_tb_locked();
atomic_set(&tb->invalid, true);
atomic_set(&tb->cflags, tb->cflags | CF_INVALID);
/* remove the TB from the hash list */
phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK);
@ -1269,7 +1269,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
tb->flags = flags;
tb->cflags = cflags;
tb->trace_vcpu_dstate = *cpu->trace_dstate;
tb->invalid = false;
#ifdef CONFIG_PROFILER
tcg_ctx.tb_count1++; /* includes aborted translations because of

3
include/exec/exec-all.h
View File

@ -314,12 +314,11 @@ struct TranslationBlock {
#define CF_NOCACHE 0x10000 /* To be freed after execution */
#define CF_USE_ICOUNT 0x20000
#define CF_IGNORE_ICOUNT 0x40000 /* Do not generate icount code */
#define CF_INVALID 0x80000 /* TB is stale. Setters must acquire tb_lock */
/* Per-vCPU dynamic tracing state used to generate this TB */
uint32_t trace_vcpu_dstate;
uint16_t invalid;
void *tc_ptr; /* pointer to the translated code */
uint8_t *tc_search; /* pointer to search data */
/* original tb when cflags has CF_NOCACHE */

2
include/exec/tb-lookup.h
View File

@ -35,7 +35,7 @@ tb_lookup__cpu_state(CPUState *cpu, target_ulong *pc, target_ulong *cs_base,
tb->cs_base == *cs_base &&
tb->flags == *flags &&
tb->trace_vcpu_dstate == *cpu->trace_dstate &&
!atomic_read(&tb->invalid))) {
!(atomic_read(&tb->cflags) & CF_INVALID))) {
return tb;
}
tb = tb_htable_lookup(cpu, *pc, *cs_base, *flags);