[v3,24/38] target-microblaze: mmu: Add R_TBLX_MISS macros

Message ID 20180516185146.30708-25-edgar.iglesias@gmail.com
State New
Headers show
Series
  • target-microblaze: Add support for Extended Addressing
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Commit Message

Edgar E. Iglesias May 16, 2018, 6:51 p.m.
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Add a R_TBLX_MISS MASK and SHIFT macros.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
 target/microblaze/mmu.c | 5 +++--
 target/microblaze/mmu.h | 4 ++++
 2 files changed, 7 insertions(+), 2 deletions(-)

Patch

diff --git a/target/microblaze/mmu.c b/target/microblaze/mmu.c
index 0019ebd18f..f4a4c339c9 100644
--- a/target/microblaze/mmu.c
+++ b/target/microblaze/mmu.c
@@ -292,8 +292,9 @@  void mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
                                 v & TLB_EPN_MASK, 0, cpu_mmu_index(env, false));
             if (hit) {
                 env->mmu.regs[MMU_R_TLBX] = lu.idx;
-            } else
-                env->mmu.regs[MMU_R_TLBX] |= 0x80000000;
+            } else {
+                env->mmu.regs[MMU_R_TLBX] |= R_TBLX_MISS_MASK;
+            }
             break;
         }
         default:
diff --git a/target/microblaze/mmu.h b/target/microblaze/mmu.h
index 3b7a9983d5..113539c6e9 100644
--- a/target/microblaze/mmu.h
+++ b/target/microblaze/mmu.h
@@ -54,6 +54,10 @@ 
 #define TLB_M                 0x00000002 /* Memory is coherent */
 #define TLB_G                 0x00000001 /* Memory is guarded from prefetch */
 
+/* TLBX  */
+#define R_TBLX_MISS_SHIFT 31
+#define R_TBLX_MISS_MASK (1U << R_TBLX_MISS_SHIFT)
+
 #define TLB_ENTRIES    64
 
 struct microblaze_mmu