target-microblaze: Convert env_btarget to i64

Convert env_btarget to i64.
No functional change.
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>

target/microblaze/cpu.h

@@ -239,7 +239,7 @@ typedef struct CPUMBState CPUMBState;
 struct CPUMBState {
     uint32_t debug;
     uint32_t btaken;
-    uint32_t btarget;
+    uint64_t btarget;
     uint32_t bimm;
 
     uint32_t imm;

target/microblaze/op_helper.c

@@ -99,7 +99,7 @@ void helper_debug(CPUMBState *env)
              "debug[%x] imm=%x iflags=%x\n",
              env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
              env->debug, env->imm, env->iflags);
-    qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
+    qemu_log("btaken=%d btarget=%" PRIx64 " mode=%s(saved=%s) eip=%d ie=%d\n",
              env->btaken, env->btarget,
              (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
              (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",

target/microblaze/translate.c

@@ -57,7 +57,7 @@ static TCGv_i32 cpu_R[32];
 static TCGv_i64 cpu_SR[14];
 static TCGv_i32 env_imm;
 static TCGv_i32 env_btaken;
-static TCGv_i32 env_btarget;
+static TCGv_i64 env_btarget;
 static TCGv_i32 env_iflags;
 static TCGv env_res_addr;
 static TCGv_i32 env_res_val;
@@ -831,7 +831,7 @@ static inline void sync_jmpstate(DisasContext *dc)
             tcg_gen_movi_i32(env_btaken, 1);
         }
         dc->jmp = JMP_INDIRECT;
-        tcg_gen_movi_i32(env_btarget, dc->jmp_pc);
+        tcg_gen_movi_i64(env_btarget, dc->jmp_pc);
     }
 }
 
@@ -1169,13 +1169,13 @@ static inline void eval_cc(DisasContext *dc, unsigned int cc,
     }
 }
 
-static void eval_cond_jmp(DisasContext *dc, TCGv_i32 pc_true, TCGv_i64 pc_false)
+static void eval_cond_jmp(DisasContext *dc, TCGv_i64 pc_true, TCGv_i64 pc_false)
 {
     TCGLabel *l1 = gen_new_label();
     /* Conditional jmp.  */
     tcg_gen_mov_i64(cpu_SR[SR_PC], pc_false);
     tcg_gen_brcondi_i32(TCG_COND_EQ, env_btaken, 0, l1);
-    tcg_gen_extu_i32_i64(cpu_SR[SR_PC], pc_true);
+    tcg_gen_mov_i64(cpu_SR[SR_PC], pc_true);
     gen_set_label(l1);
 }
 
@@ -1199,13 +1199,14 @@ static void dec_bcc(DisasContext *dc)
     if (dec_alu_op_b_is_small_imm(dc)) {
         int32_t offset = (int32_t)((int16_t)dc->imm); /* sign-extend.  */
 
-        tcg_gen_movi_i32(env_btarget, dc->pc + offset);
+        tcg_gen_movi_i64(env_btarget, dc->pc + offset);
         dc->jmp = JMP_DIRECT_CC;
         dc->jmp_pc = dc->pc + offset;
     } else {
         dc->jmp = JMP_INDIRECT;
-        tcg_gen_movi_i32(env_btarget, dc->pc);
-        tcg_gen_add_i32(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
+        tcg_gen_extu_i32_i64(env_btarget, *(dec_alu_op_b(dc)));
+        tcg_gen_addi_i64(env_btarget, env_btarget, dc->pc);
+        tcg_gen_andi_i64(env_btarget, env_btarget, UINT32_MAX);
     }
     eval_cc(dc, cc, env_btaken, cpu_R[dc->ra]);
 }
@@ -1262,7 +1263,7 @@ static void dec_br(DisasContext *dc)
     dc->jmp = JMP_INDIRECT;
     if (abs) {
         tcg_gen_movi_i32(env_btaken, 1);
-        tcg_gen_mov_i32(env_btarget, *(dec_alu_op_b(dc)));
+        tcg_gen_extu_i32_i64(env_btarget, *(dec_alu_op_b(dc)));
         if (link && !dslot) {
             if (!(dc->tb_flags & IMM_FLAG) && (dc->imm == 8 || dc->imm == 0x18))
                 t_gen_raise_exception(dc, EXCP_BREAK);
@@ -1280,8 +1281,9 @@ static void dec_br(DisasContext *dc)
             dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm);
         } else {
             tcg_gen_movi_i32(env_btaken, 1);
-            tcg_gen_movi_i32(env_btarget, dc->pc);
-            tcg_gen_add_i32(env_btarget, env_btarget, *(dec_alu_op_b(dc)));
+            tcg_gen_extu_i32_i64(env_btarget, *(dec_alu_op_b(dc)));
+            tcg_gen_addi_i64(env_btarget, env_btarget, dc->pc);
+            tcg_gen_andi_i64(env_btarget, env_btarget, UINT32_MAX);
         }
     }
 }
@@ -1345,6 +1347,7 @@ static inline void do_rte(DisasContext *dc)
 static void dec_rts(DisasContext *dc)
 {
     unsigned int b_bit, i_bit, e_bit;
+    TCGv_i64 tmp64;
 
     i_bit = dc->ir & (1 << 21);
     b_bit = dc->ir & (1 << 22);
@@ -1373,7 +1376,13 @@ static void dec_rts(DisasContext *dc)
 
     dc->jmp = JMP_INDIRECT;
     tcg_gen_movi_i32(env_btaken, 1);
-    tcg_gen_add_i32(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+
+    tmp64 = tcg_temp_new_i64();
+    tcg_gen_extu_i32_i64(env_btarget, *(dec_alu_op_b(dc)));
+    tcg_gen_extu_i32_i64(tmp64, cpu_R[dc->ra]);
+    tcg_gen_add_i64(env_btarget, env_btarget, tmp64);
+    tcg_gen_andi_i64(env_btarget, env_btarget, UINT32_MAX);
+    tcg_temp_free_i64(tmp64);
 }
 
 static int dec_check_fpuv2(DisasContext *dc)
@@ -1795,7 +1804,8 @@ void mb_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
                    "debug=%x imm=%x iflags=%x fsr=%" PRIx64 "\n",
              env->sregs[SR_MSR], env->sregs[SR_ESR], env->sregs[SR_EAR],
              env->debug, env->imm, env->iflags, env->sregs[SR_FSR]);
-    cpu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
+    cpu_fprintf(f, "btaken=%d btarget=%" PRIx64 " mode=%s(saved=%s) "
+                   "eip=%d ie=%d\n",
              env->btaken, env->btarget,
              (env->sregs[SR_MSR] & MSR_UM) ? "user" : "kernel",
              (env->sregs[SR_MSR] & MSR_UMS) ? "user" : "kernel",
@@ -1823,7 +1833,7 @@ void mb_tcg_init(void)
     env_imm = tcg_global_mem_new_i32(cpu_env,
                     offsetof(CPUMBState, imm),
                     "imm");
-    env_btarget = tcg_global_mem_new_i32(cpu_env,
+    env_btarget = tcg_global_mem_new_i64(cpu_env,
                      offsetof(CPUMBState, btarget),
                      "btarget");
     env_btaken = tcg_global_mem_new_i32(cpu_env,