target/microblaze: Remove helper_debug and env->debug

This is not used, and seems redundant with -d cpu.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/microblaze/cpu.h

@@ -229,7 +229,6 @@ typedef struct CPUMBState CPUMBState;
 #define STREAM_NONBLOCK  (1 << 4)
 
 struct CPUMBState {
-    uint32_t debug;
     uint32_t btaken;
     uint32_t btarget;
     uint32_t bimm;

target/microblaze/helper.h

@@ -1,5 +1,4 @@
 DEF_HELPER_FLAGS_2(raise_exception, TCG_CALL_NO_WG, noreturn, env, i32)
-DEF_HELPER_1(debug, void, env)
 DEF_HELPER_FLAGS_3(carry, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32)
 DEF_HELPER_2(cmp, i32, i32, i32)
 DEF_HELPER_2(cmpu, i32, i32, i32)

target/microblaze/op_helper.c

@@ -71,29 +71,6 @@ void helper_raise_exception(CPUMBState *env, uint32_t index)
     cpu_loop_exit(cs);
 }
 
-void helper_debug(CPUMBState *env)
-{
-    int i;
-
-    qemu_log("PC=%08x\n", env->pc);
-    qemu_log("rmsr=%x resr=%x rear=%" PRIx64 " "
-             "debug[%x] imm=%x iflags=%x\n",
-             env->msr, env->esr, env->ear,
-             env->debug, env->imm, env->iflags);
-    qemu_log("btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
-             env->btaken, env->btarget,
-             (env->msr & MSR_UM) ? "user" : "kernel",
-             (env->msr & MSR_UMS) ? "user" : "kernel",
-             (bool)(env->msr & MSR_EIP),
-             (bool)(env->msr & MSR_IE));
-    for (i = 0; i < 32; i++) {
-        qemu_log("r%2.2d=%8.8x ", i, env->regs[i]);
-        if ((i + 1) % 4 == 0)
-            qemu_log("\n");
-    }
-    qemu_log("\n\n");
-}
-
 static inline uint32_t compute_carry(uint32_t a, uint32_t b, uint32_t cin)
 {
     uint32_t cout = 0;

target/microblaze/translate.c

@@ -53,7 +53,6 @@
 #define DISAS_UPDATE  DISAS_TARGET_1 /* cpu state was modified dynamically */
 #define DISAS_TB_JUMP DISAS_TARGET_2 /* only pc was modified statically */
 
-static TCGv_i32 env_debug;
 static TCGv_i32 cpu_R[32];
 static TCGv_i32 cpu_pc;
 static TCGv_i32 cpu_msr;
@@ -1675,13 +1674,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
         tcg_gen_insn_start(dc->pc);
         num_insns++;
 
-#if SIM_COMPAT
-        if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
-            tcg_gen_movi_i32(cpu_pc, dc->pc);
-            gen_helper_debug();
-        }
-#endif
-
         if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
             gen_raise_exception_sync(dc, EXCP_DEBUG);
             /* The address covered by the breakpoint must be included in
@@ -1824,10 +1816,9 @@ void mb_cpu_dump_state(CPUState *cs, FILE *f, int flags)
     qemu_fprintf(f, "IN: PC=%x %s\n",
                  env->pc, lookup_symbol(env->pc));
     qemu_fprintf(f, "rmsr=%x resr=%x rear=%" PRIx64 " "
-                 "debug=%x imm=%x iflags=%x fsr=%x rbtr=%x\n",
+                 "imm=%x iflags=%x fsr=%x rbtr=%x\n",
                  env->msr, env->esr, env->ear,
-                 env->debug, env->imm, env->iflags, env->fsr,
+                 env->imm, env->iflags, env->fsr, env->btr);
-                 env->btr);
     qemu_fprintf(f, "btaken=%d btarget=%x mode=%s(saved=%s) eip=%d ie=%d\n",
                  env->btaken, env->btarget,
                  (env->msr & MSR_UM) ? "user" : "kernel",
@@ -1857,9 +1848,6 @@ void mb_tcg_init(void)
 {
     int i;
 
-    env_debug = tcg_global_mem_new_i32(cpu_env,
-                    offsetof(CPUMBState, debug),
-                    "debug0");
     env_iflags = tcg_global_mem_new_i32(cpu_env,
                     offsetof(CPUMBState, iflags),
                     "iflags");