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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>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: 1512503192-2239-5-git-send-email-peter.maydell@linaro.org
master
Peter Maydell 2017-12-13 17:59:24 +00:00
parent f989983e8d
commit f06cf24394
1 changed files with 22 additions and 18 deletions
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40
target/arm/helper.c
View File

@ -8457,11 +8457,10 @@ 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;
@ -8478,7 +8477,7 @@ 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),
@ -8488,7 +8487,7 @@ 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))) {
@ -8500,13 +8499,13 @@ 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) {
@ -8524,7 +8523,6 @@ 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)) {
@ -8538,7 +8536,7 @@ 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);
@ -8554,7 +8552,6 @@ 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;
@ -8562,15 +8559,17 @@ 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);
@ -8582,6 +8581,7 @@ 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;
}
}
@ -8595,7 +8595,8 @@ 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;
}
@ -9857,8 +9858,11 @@ 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);