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authorPeter Maydell <peter.maydell@linaro.org>2014-02-26 17:20:05 +0000
committerPeter Maydell <peter.maydell@linaro.org>2014-02-26 17:20:05 +0000
commitd9ea7d290b685844d3603103bc53ad977e6f68a3 (patch)
tree382f70d418c5581facafbaa89521d04d976311e5
parentcd5c11b84b2539049e0fdc2c4c5f3e86e88a8bff (diff)
downloadqemu-arm-d9ea7d290b685844d3603103bc53ad977e6f68a3.tar.gz
target-arm: Get MMU index information correct for A64 code
Emit the correct MMU index information for loads and stores from A64 code, rather than hardwiring it to "always kernel mode", by storing the exception level in the TB flags, and make cpu_mmu_index() return the right answer when the CPU is in AArch64 mode. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
-rw-r--r--target-arm/cpu.h11
-rw-r--r--target-arm/translate-a64.c2
2 files changed, 9 insertions, 4 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index e8e04742a6..9fe7da215c 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1057,7 +1057,7 @@ static inline CPUARMState *cpu_init(const char *cpu_model)
#define MMU_USER_IDX 1
static inline int cpu_mmu_index (CPUARMState *env)
{
- return (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR ? 1 : 0;
+ return arm_current_pl(env) ? 0 : 1;
}
#include "exec/cpu-all.h"
@@ -1084,7 +1084,9 @@ static inline int cpu_mmu_index (CPUARMState *env)
#define ARM_TBFLAG_BSWAP_CODE_SHIFT 16
#define ARM_TBFLAG_BSWAP_CODE_MASK (1 << ARM_TBFLAG_BSWAP_CODE_SHIFT)
-/* Bit usage when in AArch64 state: currently no bits defined */
+/* Bit usage when in AArch64 state */
+#define ARM_TBFLAG_AA64_EL_SHIFT 0
+#define ARM_TBFLAG_AA64_EL_MASK (0x3 << ARM_TBFLAG_AA64_EL_SHIFT)
/* some convenience accessor macros */
#define ARM_TBFLAG_AARCH64_STATE(F) \
@@ -1103,13 +1105,16 @@ static inline int cpu_mmu_index (CPUARMState *env)
(((F) & ARM_TBFLAG_CONDEXEC_MASK) >> ARM_TBFLAG_CONDEXEC_SHIFT)
#define ARM_TBFLAG_BSWAP_CODE(F) \
(((F) & ARM_TBFLAG_BSWAP_CODE_MASK) >> ARM_TBFLAG_BSWAP_CODE_SHIFT)
+#define ARM_TBFLAG_AA64_EL(F) \
+ (((F) & ARM_TBFLAG_AA64_EL_MASK) >> ARM_TBFLAG_AA64_EL_SHIFT)
static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)
{
if (is_a64(env)) {
*pc = env->pc;
- *flags = ARM_TBFLAG_AARCH64_STATE_MASK;
+ *flags = ARM_TBFLAG_AARCH64_STATE_MASK
+ | (arm_current_pl(env) << ARM_TBFLAG_AA64_EL_SHIFT);
} else {
int privmode;
*pc = env->regs[15];
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index ec2d9dc219..a6c8fabb61 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -9013,7 +9013,7 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
dc->condexec_mask = 0;
dc->condexec_cond = 0;
#if !defined(CONFIG_USER_ONLY)
- dc->user = 0;
+ dc->user = (ARM_TBFLAG_AA64_EL(tb->flags) == 0);
#endif
dc->vfp_enabled = 0;
dc->vec_len = 0;