target/arm: Optimize cpu_mmu_index
We now cache the core mmu_idx in env->hflags. Rather than recompute from scratch, extract the field. All of the uses of cpu_mmu_index within target/arm are within helpers, and env->hflags is always stable within a translation block from whence helpers are called. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20200302175829.2183-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
parent
3e270f67f0
commit
fb901c905d
|
@ -2943,16 +2943,6 @@ typedef enum ARMMMUIdxBit {
|
|||
|
||||
#define MMU_USER_IDX 0
|
||||
|
||||
/**
|
||||
* cpu_mmu_index:
|
||||
* @env: The cpu environment
|
||||
* @ifetch: True for code access, false for data access.
|
||||
*
|
||||
* Return the core mmu index for the current translation regime.
|
||||
* This function is used by generic TCG code paths.
|
||||
*/
|
||||
int cpu_mmu_index(CPUARMState *env, bool ifetch);
|
||||
|
||||
/* Indexes used when registering address spaces with cpu_address_space_init */
|
||||
typedef enum ARMASIdx {
|
||||
ARMASIdx_NS = 0,
|
||||
|
@ -3232,6 +3222,19 @@ FIELD(TBFLAG_A64, BTYPE, 10, 2) /* Not cached. */
|
|||
FIELD(TBFLAG_A64, TBID, 12, 2)
|
||||
FIELD(TBFLAG_A64, UNPRIV, 14, 1)
|
||||
|
||||
/**
|
||||
* cpu_mmu_index:
|
||||
* @env: The cpu environment
|
||||
* @ifetch: True for code access, false for data access.
|
||||
*
|
||||
* Return the core mmu index for the current translation regime.
|
||||
* This function is used by generic TCG code paths.
|
||||
*/
|
||||
static inline int cpu_mmu_index(CPUARMState *env, bool ifetch)
|
||||
{
|
||||
return FIELD_EX32(env->hflags, TBFLAG_ANY, MMUIDX);
|
||||
}
|
||||
|
||||
static inline bool bswap_code(bool sctlr_b)
|
||||
{
|
||||
#ifdef CONFIG_USER_ONLY
|
||||
|
|
|
@ -12274,11 +12274,6 @@ ARMMMUIdx arm_mmu_idx(CPUARMState *env)
|
|||
return arm_mmu_idx_el(env, arm_current_el(env));
|
||||
}
|
||||
|
||||
int cpu_mmu_index(CPUARMState *env, bool ifetch)
|
||||
{
|
||||
return arm_to_core_mmu_idx(arm_mmu_idx(env));
|
||||
}
|
||||
|
||||
#ifndef CONFIG_USER_ONLY
|
||||
ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env)
|
||||
{
|
||||
|
|
Loading…
Reference in a new issue