target/ppc: Remove unneeded local variable from booke tlb checks

In mmubooke_check_tlb() and mmubooke206_check_tlb() we can assign the
value of prot2 directly to the destination, no need to have a separate
local variable for it.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index f79e3903068a85dde9fd1e26a18fbc971f70e707..09cbeb0052c4080886bd73df1f4f908db176f39f 100644 (file)
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -628,8 +628,6 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
                               hwaddr *raddr, int *prot, target_ulong address,
                               MMUAccessType access_type, int i)
 {
-    int prot2;
-
     if (!mmubooke_check_pid(env, tlb, raddr, address, i)) {
         qemu_log_mask(CPU_LOG_MMU, "%s: TLB entry not found\n", __func__);
         return -1;
@@ -644,17 +642,16 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
     }
 
     if (FIELD_EX64(env->msr, MSR, PR)) {
-        prot2 = tlb->prot & 0xF;
+        *prot = tlb->prot & 0xF;
     } else {
-        prot2 = (tlb->prot >> 4) & 0xF;
+        *prot = (tlb->prot >> 4) & 0xF;
     }
-    *prot = prot2;
-    if (prot2 & prot_for_access_type(access_type)) {
+    if (*prot & prot_for_access_type(access_type)) {
         qemu_log_mask(CPU_LOG_MMU, "%s: good TLB!\n", __func__);
         return 0;
     }
 
-    qemu_log_mask(CPU_LOG_MMU, "%s: no prot match: %x\n", __func__, prot2);
+    qemu_log_mask(CPU_LOG_MMU, "%s: no prot match: %x\n", __func__, *prot);
     return access_type == MMU_INST_FETCH ? -3 : -2;
 }
 
@@ -795,7 +792,6 @@ static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
                                  target_ulong address,
                                  MMUAccessType access_type, int mmu_idx)
 {
-    int prot2 = 0;
     uint32_t epid;
     bool as, pr;
     bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr);
@@ -841,34 +837,34 @@ found_tlb:
         return -1;
     }
 
+    *prot = 0;
     if (pr) {
         if (tlb->mas7_3 & MAS3_UR) {
-            prot2 |= PAGE_READ;
+            *prot |= PAGE_READ;
         }
         if (tlb->mas7_3 & MAS3_UW) {
-            prot2 |= PAGE_WRITE;
+            *prot |= PAGE_WRITE;
         }
         if (tlb->mas7_3 & MAS3_UX) {
-            prot2 |= PAGE_EXEC;
+            *prot |= PAGE_EXEC;
         }
     } else {
         if (tlb->mas7_3 & MAS3_SR) {
-            prot2 |= PAGE_READ;
+            *prot |= PAGE_READ;
         }
         if (tlb->mas7_3 & MAS3_SW) {
-            prot2 |= PAGE_WRITE;
+            *prot |= PAGE_WRITE;
         }
         if (tlb->mas7_3 & MAS3_SX) {
-            prot2 |= PAGE_EXEC;
+            *prot |= PAGE_EXEC;
         }
     }
-    *prot = prot2;
-    if (prot2 & prot_for_access_type(access_type)) {
+    if (*prot & prot_for_access_type(access_type)) {
         qemu_log_mask(CPU_LOG_MMU, "%s: good TLB!\n", __func__);
         return 0;
     }
 
-    qemu_log_mask(CPU_LOG_MMU, "%s: no prot match: %x\n", __func__, prot2);
+    qemu_log_mask(CPU_LOG_MMU, "%s: no prot match: %x\n", __func__, *prot);
     return access_type == MMU_INST_FETCH ? -3 : -2;
 }