diff options
| author | Jean-Christophe DUBOIS <jcd@tribudubois.net> | 2011-12-13 18:19:23 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2011-12-13 18:19:23 +0000 |
| commit | dd4ebc2ecde4d607509a33f4f40d8795a0b3b88f (patch) | |
| tree | f420fe76841b261ca0ab5515f1a7e7d17df7117d /target-arm | |
| parent | da5361cc685c004d8bb4e7c5e7b3a52c7aca2c56 (diff) | |
arm: Fix CP15 FSR (C5) domain setting
Return the correct value in the domain field in the cp15 DFSR
(C5) -- bug noticed during Xvisor development.
Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
[Peter Maydell: reworded commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/helper.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 3fe5822f6..1949202f2 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -951,13 +951,14 @@ void do_interrupt(CPUARMState *env) /* Check section/page access permissions. Returns the page protection flags, or zero if the access is not permitted. */ -static inline int check_ap(CPUState *env, int ap, int domain, int access_type, - int is_user) +static inline int check_ap(CPUState *env, int ap, int domain_prot, + int access_type, int is_user) { int prot_ro; - if (domain == 3) + if (domain_prot == 3) { return PAGE_READ | PAGE_WRITE; + } if (access_type == 1) prot_ro = 0; @@ -1023,6 +1024,7 @@ static int get_phys_addr_v5(CPUState *env, uint32_t address, int access_type, int type; int ap; int domain; + int domain_prot; uint32_t phys_addr; /* Pagetable walk. */ @@ -1030,13 +1032,14 @@ static int get_phys_addr_v5(CPUState *env, uint32_t address, int access_type, table = get_level1_table_address(env, address); desc = ldl_phys(table); type = (desc & 3); - domain = (env->cp15.c3 >> ((desc >> 4) & 0x1e)) & 3; + domain = (desc >> 5) & 0x0f; + domain_prot = (env->cp15.c3 >> (domain * 2)) & 3; if (type == 0) { /* Section translation fault. */ code = 5; goto do_fault; } - if (domain == 0 || domain == 2) { + if (domain_prot == 0 || domain_prot == 2) { if (type == 2) code = 9; /* Section domain fault. */ else @@ -1094,7 +1097,7 @@ static int get_phys_addr_v5(CPUState *env, uint32_t address, int access_type, } code = 15; } - *prot = check_ap(env, ap, domain, access_type, is_user); + *prot = check_ap(env, ap, domain_prot, access_type, is_user); if (!*prot) { /* Access permission fault. */ goto do_fault; @@ -1117,6 +1120,7 @@ static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, int type; int ap; int domain; + int domain_prot; uint32_t phys_addr; /* Pagetable walk. */ @@ -1134,10 +1138,10 @@ static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, domain = 0; } else { /* Section or page. */ - domain = (desc >> 4) & 0x1e; + domain = (desc >> 5) & 0x0f; } - domain = (env->cp15.c3 >> domain) & 3; - if (domain == 0 || domain == 2) { + domain_prot = (env->cp15.c3 >> (domain * 2)) & 3; + if (domain_prot == 0 || domain_prot == 2) { if (type == 2) code = 9; /* Section domain fault. */ else @@ -1182,7 +1186,7 @@ static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, } code = 15; } - if (domain == 3) { + if (domain_prot == 3) { *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; } else { if (xn && access_type == 2) @@ -1194,7 +1198,7 @@ static int get_phys_addr_v6(CPUState *env, uint32_t address, int access_type, code = (code == 15) ? 6 : 3; goto do_fault; } - *prot = check_ap(env, ap, domain, access_type, is_user); + *prot = check_ap(env, ap, domain_prot, access_type, is_user); if (!*prot) { /* Access permission fault. */ goto do_fault; |