In mmu6xx_get_physical_address() ds is used as bool, declare it as
such. Also use named constant instead of hex value.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 target/ppc/mmu_common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index b1ae32f39f..9b73581fc7 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -321,8 +321,8 @@ static int mmu6xx_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
     PowerPCCPU *cpu = env_archcpu(env);
     hwaddr hash;
     target_ulong vsid, sr, pgidx;
-    int ds, target_page_bits;
-    bool pr, nx;
+    int target_page_bits;
+    bool pr, ds, nx;
 
     /* First try to find a BAT entry if there are any */
     if (env->nb_BATs && get_bat_6xx_tlb(env, ctx, eaddr, access_type) == 0) {
@@ -335,7 +335,7 @@ static int mmu6xx_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
     sr = env->sr[eaddr >> 28];
     ctx->key = (((sr & 0x20000000) && pr) ||
                 ((sr & 0x40000000) && !pr)) ? 1 : 0;
-    ds = sr & 0x80000000 ? 1 : 0;
+    ds = sr & SR32_T;
     nx = sr & SR32_NX;
     vsid = sr & SR32_VSID;
     target_page_bits = TARGET_PAGE_BITS;
-- 
2.30.9