diff options
| author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-19 12:39:00 +0000 |
|---|---|---|
| committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-19 12:39:00 +0000 |
| commit | d4934d18f36dbd974e28c700a55e9393395a18c4 (patch) | |
| tree | 06777fb36da8339215ca045a12fef2ca7fbda18a /target-arm/helper.c | |
| parent | 564e571add668fefe5e9e5752aa87f721c62efa8 (diff) | |
Implement ARMv7 MMU access permissions.
Signed-off-by: Paul Brook <paul@codesourcery.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6099 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index a9b31e5d6..a59c938a8 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -900,12 +900,16 @@ static inline int check_ap(CPUState *env, int ap, int domain, int access_type, return PAGE_READ | PAGE_WRITE; case 3: return PAGE_READ | PAGE_WRITE; - case 4: case 7: /* Reserved. */ + case 4: /* Reserved. */ return 0; case 5: return is_user ? 0 : prot_ro; case 6: return prot_ro; + case 7: + if (!arm_feature (env, ARM_FEATURE_V7)) + return 0; + return prot_ro; default: abort(); } @@ -1085,6 +1089,12 @@ static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, if (xn && access_type == 2) goto do_fault; + /* The simplified model uses AP[0] as an access control bit. */ + if ((env->cp15.c1_sys & (1 << 29)) && (ap & 1) == 0) { + /* Access flag fault. */ + code = (code == 15) ? 6 : 3; + goto do_fault; + } *prot = check_ap(env, ap, domain, access_type, is_user); if (!*prot) { /* Access permission fault. */ |