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authorPeter Maydell <peter.maydell@linaro.org>2017-12-05 13:41:11 +0000
committerPeter Maydell <peter.maydell@linaro.org>2017-12-05 19:26:24 +0000
commit34e26f35689c9503eb838f8c583e3d43ef97ec93 (patch)
tree0131ef714a319add9b905c4a6480f75e4235adf9
parentcacc0b42e1e05944716afe255e2bfb3a458bd008 (diff)
downloadqemu-arm-34e26f35689c9503eb838f8c583e3d43ef97ec93.tar.gz
target/arm: Convert get_phys_addr_v6() to not return FSC values
Make get_phys_addr_v6() return a fault type in the ARMMMUFaultInfo structure, which we convert to the FSC at the callsite. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--target/arm/helper.c40
1 files changed, 22 insertions, 18 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 6aed681e0f..1e95e3d1ec 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -8460,11 +8460,10 @@ do_fault:
static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
- target_ulong *page_size, uint32_t *fsr,
- ARMMMUFaultInfo *fi)
+ target_ulong *page_size, ARMMMUFaultInfo *fi)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
- int code;
+ int level = 1;
uint32_t table;
uint32_t desc;
uint32_t xn;
@@ -8481,7 +8480,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
/* Lookup l1 descriptor. */
if (!get_level1_table_address(env, mmu_idx, &table, address)) {
/* Section translation fault if page walk is disabled by PD0 or PD1 */
- code = 5;
+ fi->type = ARMFault_Translation;
goto do_fault;
}
desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
@@ -8491,7 +8490,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
/* Section translation fault, or attempt to use the encoding
* which is Reserved on implementations without PXN.
*/
- code = 5;
+ fi->type = ARMFault_Translation;
goto do_fault;
}
if ((type == 1) || !(desc & (1 << 18))) {
@@ -8503,13 +8502,13 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
} else {
dacr = env->cp15.dacr_s;
}
+ if (type == 1) {
+ level = 2;
+ }
domain_prot = (dacr >> (domain * 2)) & 3;
if (domain_prot == 0 || domain_prot == 2) {
- if (type != 1) {
- code = 9; /* Section domain fault. */
- } else {
- code = 11; /* Page domain fault. */
- }
+ /* Section or Page domain fault */
+ fi->type = ARMFault_Domain;
goto do_fault;
}
if (type != 1) {
@@ -8527,7 +8526,6 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
xn = desc & (1 << 4);
pxn = desc & 1;
- code = 13;
ns = extract32(desc, 19, 1);
} else {
if (arm_feature(env, ARM_FEATURE_PXN)) {
@@ -8541,7 +8539,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
switch (desc & 3) {
case 0: /* Page translation fault. */
- code = 7;
+ fi->type = ARMFault_Translation;
goto do_fault;
case 1: /* 64k page. */
phys_addr = (desc & 0xffff0000) | (address & 0xffff);
@@ -8557,7 +8555,6 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
/* Never happens, but compiler isn't smart enough to tell. */
abort();
}
- code = 15;
}
if (domain_prot == 3) {
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@@ -8565,15 +8562,17 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
if (pxn && !regime_is_user(env, mmu_idx)) {
xn = 1;
}
- if (xn && access_type == MMU_INST_FETCH)
+ if (xn && access_type == MMU_INST_FETCH) {
+ fi->type = ARMFault_Permission;
goto do_fault;
+ }
if (arm_feature(env, ARM_FEATURE_V6K) &&
(regime_sctlr(env, mmu_idx) & SCTLR_AFE)) {
/* The simplified model uses AP[0] as an access control bit. */
if ((ap & 1) == 0) {
/* Access flag fault. */
- code = (code == 15) ? 6 : 3;
+ fi->type = ARMFault_AccessFlag;
goto do_fault;
}
*prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
@@ -8585,6 +8584,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
}
if (!(*prot & (1 << access_type))) {
/* Access permission fault. */
+ fi->type = ARMFault_Permission;
goto do_fault;
}
}
@@ -8598,7 +8598,8 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
*phys_ptr = phys_addr;
return false;
do_fault:
- *fsr = code | (domain << 4);
+ fi->domain = domain;
+ fi->level = level;
return true;
}
@@ -9860,8 +9861,11 @@ static bool get_phys_addr(CPUARMState *env, target_ulong address,
return get_phys_addr_lpae(env, address, access_type, mmu_idx, phys_ptr,
attrs, prot, page_size, fsr, fi, cacheattrs);
} else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
- return get_phys_addr_v6(env, address, access_type, mmu_idx, phys_ptr,
- attrs, prot, page_size, fsr, fi);
+ bool ret = get_phys_addr_v6(env, address, access_type, mmu_idx,
+ phys_ptr, attrs, prot, page_size, fi);
+
+ *fsr = arm_fi_to_sfsc(fi);
+ return ret;
} else {
bool ret = get_phys_addr_v5(env, address, access_type, mmu_idx,
phys_ptr, prot, page_size, fi);