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target-arm: Add user-mode transaction attribute 

Add a transaction attribute indicating that a memory access is being
done from user-mode (unprivileged). This corresponds to an equivalent
signal in ARM AMBA buses.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Peter Maydell 2015-04-26 16:49:25 +01:00
parent ebca90e4c3
commit 0995bf8cd9
2 changed files with 3 additions and 0 deletions
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2
include/exec/memattrs.h
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@ -31,6 +31,8 @@ typedef struct MemTxAttrs {
unsigned int unspecified:1;
/* ARM/AMBA TrustZone Secure access */
unsigned int secure:1;
/* Memory access is usermode (unprivileged) */
unsigned int user:1;
} MemTxAttrs;
/* Bus masters which don't specify any attributes will get this,

1
target-arm/helper.c
View File

@ -5749,6 +5749,7 @@ static inline int get_phys_addr(CPUARMState *env, target_ulong address,
* to secure.
*/
attrs->secure = regime_is_secure(env, mmu_idx);
attrs->user = regime_is_user(env, mmu_idx);
/* Fast Context Switch Extension. This doesn't exist at all in v8.
* In v7 and earlier it affects all stage 1 translations.