[PATCH-for-6.0 1/2] target/mips: Replace magic values by CP0PM_MASK or TARGET_PAGE_BITS_MIN

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Replace magic values related to page size:

  12 -> TARGET_PAGE_BITS_MIN
  13 -> CP0PM_MASK

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/mips/cp0_helper.c | 5 +++--
 target/mips/helper.c     | 4 ++--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/target/mips/cp0_helper.c b/target/mips/cp0_helper.c
index a1b5140ccaf..e8b9343ec9c 100644
--- a/target/mips/cp0_helper.c
+++ b/target/mips/cp0_helper.c
@@ -904,7 +904,7 @@ void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask)
         goto invalid;
     }
     /* We don't support VTLB entry smaller than target page */
-    if ((maskbits + 12) < TARGET_PAGE_BITS) {
+    if ((maskbits + TARGET_PAGE_BITS_MIN) < TARGET_PAGE_BITS) {
         goto invalid;
     }
     env->CP0_PageMask = mask << CP0PM_MASK;
@@ -913,7 +913,8 @@ void update_pagemask(CPUMIPSState *env, target_ulong arg1, int32_t *pagemask)
 
 invalid:
     /* When invalid, set to default target page size. */
-    env->CP0_PageMask = (~TARGET_PAGE_MASK >> 12) << CP0PM_MASK;
+    mask = (~TARGET_PAGE_MASK >> TARGET_PAGE_BITS_MIN);
+    env->CP0_PageMask = mask << CP0PM_MASK;
 }
 
 void helper_mtc0_pagemask(CPUMIPSState *env, target_ulong arg1)
diff --git a/target/mips/helper.c b/target/mips/helper.c
index 063b65c0528..041432489d6 100644
--- a/target/mips/helper.c
+++ b/target/mips/helper.c
@@ -858,8 +858,8 @@ refill:
             break;
         }
     }
-    pw_pagemask = m >> 12;
-    update_pagemask(env, pw_pagemask << 13, &pw_pagemask);
+    pw_pagemask = m >> TARGET_PAGE_BITS_MIN;
+    update_pagemask(env, pw_pagemask << CP0PM_MASK, &pw_pagemask);
     pw_entryhi = (address & ~0x1fff) | (env->CP0_EntryHi & 0xFF);
     {
         target_ulong tmp_entryhi = env->CP0_EntryHi;
-- 
2.26.2