mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

target/arm: Move get_phys_addr_pmsav5 to ptw.c

Browse Source 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220604040607.269301-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-06-08 19:38:49 +01:00 committed by Peter Maydell
parent 53c038efb7
commit 9a12fb366d
3 changed files with 85 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
target/arm/helper.c
View File

@ -12274,91 +12274,6 @@ bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
return ret;
}
bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, int *prot,
ARMMMUFaultInfo *fi)
{
int n;
uint32_t mask;
uint32_t base;
bool is_user = regime_is_user(env, mmu_idx);
if (regime_translation_disabled(env, mmu_idx)) {
/* MPU disabled. */
*phys_ptr = address;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return false;
}
*phys_ptr = address;
for (n = 7; n >= 0; n--) {
base = env->cp15.c6_region[n];
if ((base & 1) == 0) {
continue;
}
mask = 1 << ((base >> 1) & 0x1f);
/* Keep this shift separate from the above to avoid an
(undefined) << 32. */
mask = (mask << 1) - 1;
if (((base ^ address) & ~mask) == 0) {
break;
}
}
if (n < 0) {
fi->type = ARMFault_Background;
return true;
}
if (access_type == MMU_INST_FETCH) {
mask = env->cp15.pmsav5_insn_ap;
} else {
mask = env->cp15.pmsav5_data_ap;
}
mask = (mask >> (n * 4)) & 0xf;
switch (mask) {
case 0:
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
case 1:
if (is_user) {
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot = PAGE_READ | PAGE_WRITE;
break;
case 2:
*prot = PAGE_READ;
if (!is_user) {
*prot |= PAGE_WRITE;
}
break;
case 3:
*prot = PAGE_READ | PAGE_WRITE;
break;
case 5:
if (is_user) {
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot = PAGE_READ;
break;
case 6:
*prot = PAGE_READ;
break;
default:
/* Bad permission. */
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot |= PAGE_EXEC;
return false;
}
/* Combine either inner or outer cacheability attributes for normal
* memory, according to table D4-42 and pseudocode procedure
* CombineS1S2AttrHints() of ARM DDI 0487B.b (the ARMv8 ARM).

85
target/arm/ptw.c
View File

@ -289,6 +289,91 @@ do_fault:
return true;
}
static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, int *prot,
ARMMMUFaultInfo *fi)
{
int n;
uint32_t mask;
uint32_t base;
bool is_user = regime_is_user(env, mmu_idx);
if (regime_translation_disabled(env, mmu_idx)) {
/* MPU disabled. */
*phys_ptr = address;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return false;
}
*phys_ptr = address;
for (n = 7; n >= 0; n--) {
base = env->cp15.c6_region[n];
if ((base & 1) == 0) {
continue;
}
mask = 1 << ((base >> 1) & 0x1f);
/* Keep this shift separate from the above to avoid an
(undefined) << 32. */
mask = (mask << 1) - 1;
if (((base ^ address) & ~mask) == 0) {
break;
}
}
if (n < 0) {
fi->type = ARMFault_Background;
return true;
}
if (access_type == MMU_INST_FETCH) {
mask = env->cp15.pmsav5_insn_ap;
} else {
mask = env->cp15.pmsav5_data_ap;
}
mask = (mask >> (n * 4)) & 0xf;
switch (mask) {
case 0:
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
case 1:
if (is_user) {
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot = PAGE_READ | PAGE_WRITE;
break;
case 2:
*prot = PAGE_READ;
if (!is_user) {
*prot |= PAGE_WRITE;
}
break;
case 3:
*prot = PAGE_READ | PAGE_WRITE;
break;
case 5:
if (is_user) {
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot = PAGE_READ;
break;
case 6:
*prot = PAGE_READ;
break;
default:
/* Bad permission. */
fi->type = ARMFault_Permission;
fi->level = 1;
return true;
}
*prot |= PAGE_EXEC;
return false;
}
/**
* get_phys_addr - get the physical address for this virtual address
*

4
target/arm/ptw.h
View File

@ -33,10 +33,6 @@ simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
}
bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, int *prot,
ARMMMUFaultInfo *fi);
bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
MMUAccessType access_type, ARMMMUIdx mmu_idx,
hwaddr *phys_ptr, int *prot,