[Qemu-devel] [PATCH 23/26] target/mips: Clean up handling of CP0 register 28

[Aleksandar Markovic]

From: Aleksandar Markovic <address@hidden>

Clean up handling of CP0 register 28.

Signed-off-by: Aleksandar Markovic <address@hidden>
---
 target/mips/cpu.h       | 24 +++++++++++--------
 target/mips/translate.c | 64 ++++++++++++++++++++++++-------------------------
 2 files changed, 46 insertions(+), 42 deletions(-)

diff --git a/target/mips/cpu.h b/target/mips/cpu.h
index 80c896b..55ada8c 100644
--- a/target/mips/cpu.h
+++ b/target/mips/cpu.h
@@ -235,12 +235,12 @@ typedef struct mips_def_t mips_def_t;
  *
  * 0   DataLo            DataHi            ErrorEPC          DESAVE
  * 1   TagLo             TagHi
- * 2   DataLo            DataHi                              KScratch<n>
- * 3   TagLo             TagHi                               KScratch<n>
- * 4   DataLo            DataHi                              KScratch<n>
- * 5   TagLo             TagHi                               KScratch<n>
- * 6   DataLo            DataHi                              KScratch<n>
- * 7   TagLo             TagHi                               KScratch<n>
+ * 2   DataLo1           DataHi                              KScratch<n>
+ * 3   TagLo1            TagHi                               KScratch<n>
+ * 4   DataLo2           DataHi                              KScratch<n>
+ * 5   TagLo2            TagHi                               KScratch<n>
+ * 6   DataLo3           DataHi                              KScratch<n>
+ * 7   TagLo3            TagHi                               KScratch<n>
  *
  */
 #define CP0_REGISTER_00     0
@@ -423,10 +423,14 @@ typedef struct mips_def_t mips_def_t;
 /* CP0 Register 27 */
 #define CP0_REG27__CACHERR         0
 /* CP0 Register 28 */
-#define CP0_REG28__ITAGLO          0
-#define CP0_REG28__IDATALO         1
-#define CP0_REG28__DTAGLO          2
-#define CP0_REG28__DDATALO         3
+#define CP0_REG28__TAGLO           0
+#define CP0_REG28__DATALO          1
+#define CP0_REG28__TAGLO1          2
+#define CP0_REG28__DATALO1         3
+#define CP0_REG28__TAGLO2          4
+#define CP0_REG28__DATALO2         5
+#define CP0_REG28__TAGLO3          6
+#define CP0_REG28__DATALO3         7
 /* CP0 Register 29 */
 #define CP0_REG29__IDATAHI         1
 #define CP0_REG29__DDATAHI         3
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 936c51c..6f5eed7 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -7523,10 +7523,10 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
         break;
     case CP0_REGISTER_28:
         switch (sel) {
-        case 0:
-        case 2:
-        case 4:
-        case 6:
+        case CP0_REG28__TAGLO:
+        case CP0_REG28__TAGLO1:
+        case CP0_REG28__TAGLO2:
+        case CP0_REG28__TAGLO3:
             {
                 TCGv_i64 tmp = tcg_temp_new_i64();
                 tcg_gen_ld_i64(tmp, cpu_env, offsetof(CPUMIPSState, 
CP0_TagLo));
@@ -7535,10 +7535,10 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
             }
             register_name = "TagLo";
             break;
-        case 1:
-        case 3:
-        case 5:
-        case 7:
+        case CP0_REG28__DATALO:
+        case CP0_REG28__DATALO1:
+        case CP0_REG28__DATALO2:
+        case CP0_REG28__DATALO3:
             gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_DataLo));
             register_name = "DataLo";
             break;
@@ -8282,17 +8282,17 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
        break;
     case CP0_REGISTER_28:
         switch (sel) {
-        case 0:
-        case 2:
-        case 4:
-        case 6:
+        case CP0_REG28__TAGLO:
+        case CP0_REG28__TAGLO1:
+        case CP0_REG28__TAGLO2:
+        case CP0_REG28__TAGLO3:
             gen_helper_mtc0_taglo(cpu_env, arg);
             register_name = "TagLo";
             break;
-        case 1:
-        case 3:
-        case 5:
-        case 7:
+        case CP0_REG28__DATALO:
+        case CP0_REG28__DATALO1:
+        case CP0_REG28__DATALO2:
+        case CP0_REG28__DATALO3:
             gen_helper_mtc0_datalo(cpu_env, arg);
             register_name = "DataLo";
             break;
@@ -9018,17 +9018,17 @@ static void gen_dmfc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
         break;
     case CP0_REGISTER_28:
         switch (sel) {
-        case 0:
-        case 2:
-        case 4:
-        case 6:
+        case CP0_REG28__TAGLO:
+        case CP0_REG28__TAGLO1:
+        case CP0_REG28__TAGLO2:
+        case CP0_REG28__TAGLO3:
             gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_TagLo));
             register_name = "TagLo";
             break;
-        case 1:
-        case 3:
-        case 5:
-        case 7:
+        case CP0_REG28__DATALO:
+        case CP0_REG28__DATALO1:
+        case CP0_REG28__DATALO2:
+        case CP0_REG28__DATALO3:
             gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_DataLo));
             register_name = "DataLo";
             break;
@@ -9758,17 +9758,17 @@ static void gen_dmtc0(DisasContext *ctx, TCGv arg, int 
reg, int sel)
         break;
     case CP0_REGISTER_28:
         switch (sel) {
-        case 0:
-        case 2:
-        case 4:
-        case 6:
+        case CP0_REG28__TAGLO:
+        case CP0_REG28__TAGLO1:
+        case CP0_REG28__TAGLO2:
+        case CP0_REG28__TAGLO3:
             gen_helper_mtc0_taglo(cpu_env, arg);
             register_name = "TagLo";
             break;
-        case 1:
-        case 3:
-        case 5:
-        case 7:
+        case CP0_REG28__DATALO:
+        case CP0_REG28__DATALO1:
+        case CP0_REG28__DATALO2:
+        case CP0_REG28__DATALO3:
             gen_helper_mtc0_datalo(cpu_env, arg);
             register_name = "DataLo";
             break;
-- 
2.7.4