target/arm: Move ap_to_tw_prot etc to ptw.c

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220604040607.269301-23-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/helper.c

@@ -10537,83 +10537,6 @@ bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
         g_assert_not_reached();
     }
 }
-
-/* Translate section/page access permissions to page
- * R/W protection flags
- *
- * @env:         CPUARMState
- * @mmu_idx:     MMU index indicating required translation regime
- * @ap:          The 3-bit access permissions (AP[2:0])
- * @domain_prot: The 2-bit domain access permissions
- */
-int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap, int domain_prot)
-{
-    bool is_user = regime_is_user(env, mmu_idx);
-
-    if (domain_prot == 3) {
-        return PAGE_READ | PAGE_WRITE;
-    }
-
-    switch (ap) {
-    case 0:
-        if (arm_feature(env, ARM_FEATURE_V7)) {
-            return 0;
-        }
-        switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
-        case SCTLR_S:
-            return is_user ? 0 : PAGE_READ;
-        case SCTLR_R:
-            return PAGE_READ;
-        default:
-            return 0;
-        }
-    case 1:
-        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
-    case 2:
-        if (is_user) {
-            return PAGE_READ;
-        } else {
-            return PAGE_READ | PAGE_WRITE;
-        }
-    case 3:
-        return PAGE_READ | PAGE_WRITE;
-    case 4: /* Reserved.  */
-        return 0;
-    case 5:
-        return is_user ? 0 : PAGE_READ;
-    case 6:
-        return PAGE_READ;
-    case 7:
-        if (!arm_feature(env, ARM_FEATURE_V6K)) {
-            return 0;
-        }
-        return PAGE_READ;
-    default:
-        g_assert_not_reached();
-    }
-}
-
-/* Translate section/page access permissions to page
- * R/W protection flags.
- *
- * @ap:      The 2-bit simple AP (AP[2:1])
- * @is_user: TRUE if accessing from PL0
- */
-int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
-{
-    switch (ap) {
-    case 0:
-        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
-    case 1:
-        return PAGE_READ | PAGE_WRITE;
-    case 2:
-        return is_user ? 0 : PAGE_READ;
-    case 3:
-        return PAGE_READ;
-    default:
-        g_assert_not_reached();
-    }
-}
 #endif /* !CONFIG_USER_ONLY */
 
 int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx)

target/arm/ptw.c

@@ -211,6 +211,87 @@ static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
     return true;
 }
 
+/*
+ * Translate section/page access permissions to page R/W protection flags
+ * @env:         CPUARMState
+ * @mmu_idx:     MMU index indicating required translation regime
+ * @ap:          The 3-bit access permissions (AP[2:0])
+ * @domain_prot: The 2-bit domain access permissions
+ */
+static int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
+                         int ap, int domain_prot)
+{
+    bool is_user = regime_is_user(env, mmu_idx);
+
+    if (domain_prot == 3) {
+        return PAGE_READ | PAGE_WRITE;
+    }
+
+    switch (ap) {
+    case 0:
+        if (arm_feature(env, ARM_FEATURE_V7)) {
+            return 0;
+        }
+        switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
+        case SCTLR_S:
+            return is_user ? 0 : PAGE_READ;
+        case SCTLR_R:
+            return PAGE_READ;
+        default:
+            return 0;
+        }
+    case 1:
+        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
+    case 2:
+        if (is_user) {
+            return PAGE_READ;
+        } else {
+            return PAGE_READ | PAGE_WRITE;
+        }
+    case 3:
+        return PAGE_READ | PAGE_WRITE;
+    case 4: /* Reserved.  */
+        return 0;
+    case 5:
+        return is_user ? 0 : PAGE_READ;
+    case 6:
+        return PAGE_READ;
+    case 7:
+        if (!arm_feature(env, ARM_FEATURE_V6K)) {
+            return 0;
+        }
+        return PAGE_READ;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+/*
+ * Translate section/page access permissions to page R/W protection flags.
+ * @ap:      The 2-bit simple AP (AP[2:1])
+ * @is_user: TRUE if accessing from PL0
+ */
+static int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
+{
+    switch (ap) {
+    case 0:
+        return is_user ? 0 : PAGE_READ | PAGE_WRITE;
+    case 1:
+        return PAGE_READ | PAGE_WRITE;
+    case 2:
+        return is_user ? 0 : PAGE_READ;
+    case 3:
+        return PAGE_READ;
+    default:
+        g_assert_not_reached();
+    }
+}
+
+static int simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
+{
+    return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
+}
+
 static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
                              MMUAccessType access_type, ARMMMUIdx mmu_idx,
                              hwaddr *phys_ptr, int *prot,

target/arm/ptw.h

@@ -15,15 +15,5 @@ bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx);
 bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx);
 uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, int ttbrn);
 
-int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
-                  int ap, int domain_prot);
-int simple_ap_to_rw_prot_is_user(int ap, bool is_user);
-
-static inline int
-simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
-{
-    return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
-}
-
 #endif /* !CONFIG_USER_ONLY */
 #endif /* TARGET_ARM_PTW_H */