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Simplify reg_read/reg_write, obtaining a perf boost.

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Single reg_read/reg_write is now about 25% faster.
This commit is contained in:
Robert Xiao
2023-05-11 22:54:03 -07:00
parent 074566cf69
commit 30d202b89e
40 changed files with 563 additions and 1403 deletions
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102
qemu/target/s390x/unicorn.c
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@@ -43,7 +43,7 @@ static void s390_release(void *ctx)
// TODO: Anymore to free?
}
void s390_reg_reset(struct uc_struct *uc)
static void reg_reset(struct uc_struct *uc)
{
CPUArchState *env = uc->cpu->env_ptr;
@@ -53,9 +53,11 @@ void s390_reg_reset(struct uc_struct *uc)
env->psw.addr = 0;
}
static uc_err reg_read(CPUS390XState *env, unsigned int regid, void *value,
size_t *size)
DEFAULT_VISIBILITY
uc_err reg_read(void *_env, int mode, unsigned int regid, void *value,
size_t *size)
{
CPUS390XState *env = _env;
uc_err ret = UC_ERR_ARG;
if (regid >= UC_S390X_REG_R0 && regid <= UC_S390X_REG_R15) {
@@ -82,9 +84,11 @@ static uc_err reg_read(CPUS390XState *env, unsigned int regid, void *value,
return ret;
}
static uc_err reg_write(CPUS390XState *env, unsigned int regid,
const void *value, size_t *size, int *setpc)
DEFAULT_VISIBILITY
uc_err reg_write(void *_env, int mode, unsigned int regid, const void *value,
size_t *size, int *setpc)
{
CPUS390XState *env = _env;
uc_err ret = UC_ERR_ARG;
if (regid >= UC_S390X_REG_R0 && regid <= UC_S390X_REG_R15) {
@@ -112,86 +116,6 @@ static uc_err reg_write(CPUS390XState *env, unsigned int regid,
return ret;
}
static uc_err reg_read_batch(CPUS390XState *env, unsigned int *regs,
void *const *vals, size_t *sizes, int count)
{
int i;
for (i = 0; i < count; i++) {
unsigned int regid = regs[i];
void *value = vals[i];
uc_err err = reg_read(env, regid, value, sizes ? sizes + i : NULL);
if (err) {
return err;
}
}
return UC_ERR_OK;
}
static uc_err reg_write_batch(CPUS390XState *env, unsigned int *regs,
const void *const *vals, size_t *sizes, int count,
int *setpc)
{
int i;
for (i = 0; i < count; i++) {
unsigned int regid = regs[i];
const void *value = vals[i];
uc_err err =
reg_write(env, regid, value, sizes ? sizes + i : NULL, setpc);
if (err) {
return err;
}
}
return UC_ERR_OK;
}
DEFAULT_VISIBILITY
int s390_reg_read(struct uc_struct *uc, unsigned int *regs, void *const *vals,
size_t *sizes, int count)
{
CPUS390XState *env = &(S390_CPU(uc->cpu)->env);
return reg_read_batch(env, regs, vals, sizes, count);
}
DEFAULT_VISIBILITY
int s390_reg_write(struct uc_struct *uc, unsigned int *regs,
const void *const *vals, size_t *sizes, int count)
{
CPUS390XState *env = &(S390_CPU(uc->cpu)->env);
int setpc = 0;
uc_err err = reg_write_batch(env, regs, vals, sizes, count, &setpc);
if (err) {
return err;
}
if (setpc) {
// force to quit execution and flush TB
uc->quit_request = true;
break_translation_loop(uc);
}
return UC_ERR_OK;
}
DEFAULT_VISIBILITY
int s390_context_reg_read(struct uc_context *ctx, unsigned int *regs,
void *const *vals, size_t *sizes, int count)
{
CPUS390XState *env = (CPUS390XState *)ctx->data;
return reg_read_batch(env, regs, vals, sizes, count);
}
DEFAULT_VISIBILITY
int s390_context_reg_write(struct uc_context *ctx, unsigned int *regs,
const void *const *vals, size_t *sizes, int count)
{
CPUS390XState *env = (CPUS390XState *)ctx->data;
int setpc = 0;
return reg_write_batch(env, regs, vals, sizes, count, &setpc);
}
static int s390_cpus_init(struct uc_struct *uc, const char *cpu_model)
{
S390CPU *cpu;
@@ -204,12 +128,12 @@ static int s390_cpus_init(struct uc_struct *uc, const char *cpu_model)
}
DEFAULT_VISIBILITY
void s390_uc_init(struct uc_struct *uc)
void uc_init(struct uc_struct *uc)
{
uc->release = s390_release;
uc->reg_read = s390_reg_read;
uc->reg_write = s390_reg_write;
uc->reg_reset = s390_reg_reset;
uc->reg_read = reg_read;
uc->reg_write = reg_write;
uc->reg_reset = reg_reset;
uc->set_pc = s390_set_pc;
uc->get_pc = s390_get_pc;
uc->cpus_init = s390_cpus_init;