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target/arm: Add arm_mmu_idx_is_stage1_of_2 

Use a common predicate for querying stage1-ness.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200208125816.14954-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-02-08 12:57:57 +00:00 committed by Peter Maydell
parent 979a89023f
commit fee7aa46ed
2 changed files with 21 additions and 5 deletions
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8
target/arm/helper.c
View File

@ -3261,8 +3261,7 @@ static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
bool take_exc = false;
if (fi.s1ptw && current_el == 1 && !arm_is_secure(env)
&& (mmu_idx == ARMMMUIdx_Stage1_E1 ||
mmu_idx == ARMMMUIdx_Stage1_E0)) {
&& arm_mmu_idx_is_stage1_of_2(mmu_idx)) {
/*
* Synchronous stage 2 fault on an access made as part of the
* translation table walk for AT S1E0* or AT S1E1* insn
@ -9285,8 +9284,7 @@ static inline bool regime_translation_disabled(CPUARMState *env,
}
}
if ((env->cp15.hcr_el2 & HCR_DC) &&
(mmu_idx == ARMMMUIdx_Stage1_E0 || mmu_idx == ARMMMUIdx_Stage1_E1)) {
if ((env->cp15.hcr_el2 & HCR_DC) && arm_mmu_idx_is_stage1_of_2(mmu_idx)) {
/* HCR.DC means SCTLR_EL1.M behaves as 0 */
return true;
}
@ -9595,7 +9593,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
hwaddr addr, MemTxAttrs txattrs,
ARMMMUFaultInfo *fi)
{
if ((mmu_idx == ARMMMUIdx_Stage1_E0 || mmu_idx == ARMMMUIdx_Stage1_E1) &&
if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
!regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
target_ulong s2size;
hwaddr s2pa;

18
target/arm/internals.h
View File

@ -1034,6 +1034,24 @@ static inline ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env)
ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env);
#endif
/**
* arm_mmu_idx_is_stage1_of_2:
* @mmu_idx: The ARMMMUIdx to test
*
* Return true if @mmu_idx is a NOTLB mmu_idx that is the
* first stage of a two stage regime.
*/
static inline bool arm_mmu_idx_is_stage1_of_2(ARMMMUIdx mmu_idx)
{
switch (mmu_idx) {
case ARMMMUIdx_Stage1_E0:
case ARMMMUIdx_Stage1_E1:
return true;
default:
return false;
}
}
/*
* Parameters of a given virtual address, as extracted from the
* translation control register (TCR) for a given regime.