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author | Fabian Aggeler <aggelerf@ethz.ch> | 2014-10-24 12:19:14 +0100 |
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committer | Peter Maydell <peter.maydell@linaro.org> | 2014-10-24 12:19:14 +0100 |
commit | 592125f83a8034deaa26f840cde5909f26429c4a (patch) | |
tree | bd450989cd1fc8e7ff3f72a6f52a5aacbb9b5e77 /target-arm | |
parent | dcbff19bd07c198f4f9bdbf2db740a8e282dd5f6 (diff) | |
download | hqemu-592125f83a8034deaa26f840cde5909f26429c4a.zip hqemu-592125f83a8034deaa26f840cde5909f26429c4a.tar.gz |
target-arm: make arm_current_el() return EL3
Make arm_current_el() return EL3 for secure PL1 and monitor mode.
Increase MMU modes since mmu_index is directly inferred from arm_
current_el(). Change assertion in arm_el_is_aa64() to allow EL3.
Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch>
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1413910544-20150-6-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
-rw-r--r-- | target-arm/cpu.h | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index 1138539..cb6ec5c 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -100,7 +100,7 @@ typedef uint32_t ARMReadCPFunc(void *opaque, int cp_info, struct arm_boot_info; -#define NB_MMU_MODES 2 +#define NB_MMU_MODES 4 /* We currently assume float and double are IEEE single and double precision respectively. @@ -803,11 +803,12 @@ static inline bool arm_is_secure(CPUARMState *env) /* Return true if the specified exception level is running in AArch64 state. */ static inline bool arm_el_is_aa64(CPUARMState *env, int el) { - /* We don't currently support EL2 or EL3, and this isn't valid for EL0 + /* We don't currently support EL2, and this isn't valid for EL0 * (if we're in EL0, is_a64() is what you want, and if we're not in EL0 * then the state of EL0 isn't well defined.) */ - assert(el == 1); + assert(el == 1 || el == 3); + /* AArch64-capable CPUs always run with EL1 in AArch64 mode. This * is a QEMU-imposed simplification which we may wish to change later. * If we in future support EL2 and/or EL3, then the state of lower @@ -996,17 +997,27 @@ static inline bool cptype_valid(int cptype) */ static inline int arm_current_el(CPUARMState *env) { - if (env->aarch64) { + if (is_a64(env)) { return extract32(env->pstate, 2, 2); } - if ((env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR) { + switch (env->uncached_cpsr & 0x1f) { + case ARM_CPU_MODE_USR: return 0; + case ARM_CPU_MODE_HYP: + return 2; + case ARM_CPU_MODE_MON: + return 3; + default: + if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) { + /* If EL3 is 32-bit then all secure privileged modes run in + * EL3 + */ + return 3; + } + + return 1; } - /* We don't currently implement the Virtualization or TrustZone - * extensions, so EL2 and EL3 don't exist for us. - */ - return 1; } typedef struct ARMCPRegInfo ARMCPRegInfo; |