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Expose more TB related stuff

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This commit is contained in:
lazymio
2021-11-01 22:11:43 +01:00
parent 14e175394b
commit b7e82d460c
6 changed files with 50 additions and 31 deletions
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50
qemu/accel/tcg/translate-all.c
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@ -999,7 +999,7 @@ static void uc_invalidate_tb(struct uc_struct *uc, uint64_t start_addr, size_t l
tb_invalidate_phys_range(uc, start, end);
}
static TranslationBlock* uc_gen_tb(struct uc_struct *uc, uint64_t addr)
static uc_err uc_gen_tb(struct uc_struct *uc, uint64_t addr, uc_tb *out_tb)
{
TranslationBlock *tb;
target_ulong cs_base, pc;
@ -1024,31 +1024,37 @@ static TranslationBlock* uc_gen_tb(struct uc_struct *uc, uint64_t addr)
cflags &= ~CF_CLUSTER_MASK;
cflags |= cpu->cluster_index << CF_CLUSTER_SHIFT;
if (likely(tb &&
tb->pc == pc &&
tb->cs_base == cs_base &&
tb->flags == flags &&
tb->trace_vcpu_dstate == *cpu->trace_dstate &&
(tb_cflags(tb) & (CF_HASH_MASK | CF_INVALID)) == cflags)) {
return tb;
}
if (unlikely(!(tb &&
tb->pc == pc &&
tb->cs_base == cs_base &&
tb->flags == flags &&
tb->trace_vcpu_dstate == *cpu->trace_dstate &&
(tb_cflags(tb) & (CF_HASH_MASK | CF_INVALID)) == cflags))) {
tb = tb_htable_lookup(cpu, pc, cs_base, flags, cflags);
cpu->tb_jmp_cache[hash] = tb;
if (tb != NULL) {
return tb;
}
if (tb == NULL) {
mmap_lock();
tb = tb_gen_code(cpu, pc, cs_base, flags, cflags);
mmap_unlock();
/* We add the TB in the virtual pc hash table for the fast lookup */
tb = tb_htable_lookup(cpu, pc, cs_base, flags, cflags);
cpu->tb_jmp_cache[hash] = tb;
if (tb == NULL) {
mmap_lock();
tb = tb_gen_code(cpu, pc, cs_base, flags, cflags);
mmap_unlock();
/* We add the TB in the virtual pc hash table for the fast lookup */
cpu->tb_jmp_cache[hash] = tb;
}
}
return tb;
// If we still couldn't generate a TB, it must be out of memory.
if (tb == NULL) {
return UC_ERR_NOMEM;
}
if (out_tb != NULL) {
out_tb->pc = tb->pc;
out_tb->size = tb->size;
out_tb->icount = tb->icount;
}
return UC_ERR_OK;
}
/* Must be called before using the QEMU cpus. 'tb_size' is the size