[PULL 19/29] target/ppc: Eliminate goto in mmubooke_check_tlb()

[Daniel Henrique Barboza <danielhb413@gmail.com>]

From: BALATON Zoltan <balaton@eik.bme.hu>

Move out checking PID registers into a separate function which makes
mmubooke_check_tlb() simpler and avoids using goto.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <bd84d5f38af0ba2983ccd5c07635db49267c828f.1685448535.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 target/ppc/mmu_common.c | 40 +++++++++++++++++++++-------------------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index bd7d7d5257..ae1db6e348 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -601,37 +601,39 @@ static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
     return ret;
 }
 
-static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
-                              hwaddr *raddr, int *prot, target_ulong address,
-                              MMUAccessType access_type, int i)
+static bool mmubooke_check_pid(CPUPPCState *env, ppcemb_tlb_t *tlb,
+                               hwaddr *raddr, target_ulong addr, int i)
 {
-    int prot2;
-
-    if (ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID], i)) {
+    if (ppcemb_tlb_check(env, tlb, raddr, addr, env->spr[SPR_BOOKE_PID], i)) {
         if (!env->nb_pids) {
             /* Extend the physical address to 36 bits */
             *raddr |= (uint64_t)(tlb->RPN & 0xF) << 32;
         }
-        goto found_tlb;
+        return true;
+    } else if (!env->nb_pids) {
+        return false;
     }
-
     if (env->spr[SPR_BOOKE_PID1] &&
-        ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID1], i)) {
-        goto found_tlb;
+        ppcemb_tlb_check(env, tlb, raddr, addr, env->spr[SPR_BOOKE_PID1], i)) {
+        return true;
     }
-
     if (env->spr[SPR_BOOKE_PID2] &&
-        ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID2], i)) {
-        goto found_tlb;
+        ppcemb_tlb_check(env, tlb, raddr, addr, env->spr[SPR_BOOKE_PID2], i)) {
+        return true;
     }
+    return false;
+}
 
-     qemu_log_mask(CPU_LOG_MMU, "%s: TLB entry not found\n", __func__);
-    return -1;
+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;
 
-found_tlb:
+    if (!mmubooke_check_pid(env, tlb, raddr, address, i)) {
+        qemu_log_mask(CPU_LOG_MMU, "%s: TLB entry not found\n", __func__);
+        return -1;
+    }
 
     if (FIELD_EX64(env->msr, MSR, PR)) {
         prot2 = tlb->prot & 0xF;
-- 
2.40.1