core: print rwx flags for each MMU region when a user TA aborts

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

core/arch/arm/kernel/user_ta.c

@@ -501,6 +501,7 @@ static void user_ta_enter_close_session(struct tee_ta_session *s)
 static void user_ta_dump_state(struct tee_ta_ctx *ctx)
 {
 	struct user_ta_ctx *utc __maybe_unused = to_user_ta_ctx(ctx);
+	char flags[4] = { '\0', };
 	size_t n;
 
 	EMSG_RAW(" arch: %s  load address: 0x%x  ctx-idr: %d",
@@ -515,10 +516,12 @@ static void user_ta_dump_state(struct tee_ta_ctx *ctx)
 			mobj_get_pa(utc->mmu->regions[n].mobj,
 				    utc->mmu->regions[n].offset, 0, &pa);
 
+		mattr_uflags_to_str(flags, sizeof(flags),
+				    utc->mmu->regions[n].attr);
 		EMSG_RAW(" region %zu: va %#" PRIxVA " pa %#" PRIxPA
-			 " size %#zx",
+			 " size %#zx flags %s",
 			 n, utc->mmu->regions[n].va, pa,
-			 utc->mmu->regions[n].size);
+			 utc->mmu->regions[n].size, flags);
 	}
 }
 KEEP_PAGER(user_ta_dump_state);

core/include/mm/tee_mmu_types.h

@@ -89,4 +89,15 @@ struct tee_mmu_info {
 	vaddr_t ta_private_vmem_end;
 };
 
+static inline void mattr_uflags_to_str(char *str, size_t size, uint32_t attr)
+{
+	if (size < 4)
+		return;
+
+	str[0] = (attr & TEE_MATTR_UR) ? 'r' : '-';
+	str[1] = (attr & TEE_MATTR_UW) ? 'w' : '-';
+	str[2] = (attr & TEE_MATTR_UX) ? 'x' : '-';
+	str[3] = '\0';
+}
+
 #endif