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target-arm: Add user-mode transaction attribute

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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.

Backports commit 0995bf8cd91b81ec9c1078e37b808794080dc5c0 from qemu
This commit is contained in:
Peter Maydell 2018-02-12 20:41:38 -05:00 committed by Lioncash
parent 2281d6c4c9
commit e1a7c13fb4
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2 changed files with 3 additions and 0 deletions
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2
qemu/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
qemu/target-arm/helper.c
View file

@ -5233,6 +5233,7 @@ 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.