Add instruction counter.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4799 c046a42c-6fe2-441c-8c8c-71466251a162

2 files changed, 22 insertions, 1 deletions

diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h
index cfeafc003e..aaf9e42632 100644
--- a/target-m68k/cpu.h
+++ b/target-m68k/cpu.h
@@ -235,6 +235,8 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 }
 #endif
 
+#define CPU_PC_FROM_TB(env, tb) env->pc = tb->pc
+
 #include "cpu-all.h"
 
 #endif
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 0d603bdf58..a920d213b0 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -63,6 +63,8 @@ static TCGv NULL_QREG;
 /* Used to distinguish stores from bad addressing modes.  */
 static TCGv store_dummy;
 
+#include "gen-icount.h"
+
 void m68k_tcg_init(void)
 {
     char *p;
@@ -2919,6 +2921,8 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
     target_ulong pc_start;
     int pc_offset;
     int last_cc_op;
+    int num_insns;
+    int max_insns;
 
     /* generate intermediate code */
     pc_start = tb->pc;
@@ -2937,6 +2941,12 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
     dc->is_mem = 0;
     dc->mactmp = NULL_QREG;
     lj = -1;
+    num_insns = 0;
+    max_insns = tb->cflags & CF_COUNT_MASK;
+    if (max_insns == 0)
+        max_insns = CF_COUNT_MASK;
+
+    gen_icount_start();
     do {
         pc_offset = dc->pc - pc_start;
         gen_throws_exception = NULL;
@@ -2960,10 +2970,14 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
             }
             gen_opc_pc[lj] = dc->pc;
             gen_opc_instr_start[lj] = 1;
+            gen_opc_icount[lj] = num_insns;
         }
+        if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
+            gen_io_start();
         last_cc_op = dc->cc_op;
         dc->insn_pc = dc->pc;
 	disas_m68k_insn(env, dc);
+        num_insns++;
 
         /* Terminate the TB on memory ops if watchpoints are present.  */
         /* FIXME: This should be replacd by the deterministic execution
@@ -2972,8 +2986,11 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
             break;
     } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
              !env->singlestep_enabled &&
-             (pc_offset) < (TARGET_PAGE_SIZE - 32));
+             (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
+             num_insns < max_insns);
 
+    if (tb->cflags & CF_LAST_IO)
+        gen_io_end();
     if (__builtin_expect(env->singlestep_enabled, 0)) {
         /* Make sure the pc is updated, and raise a debug exception.  */
         if (!dc->is_jmp) {
@@ -2999,6 +3016,7 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
             break;
         }
     }
+    gen_icount_end(tb, num_insns);
     *gen_opc_ptr = INDEX_op_end;
 
 #ifdef DEBUG_DISAS
@@ -3016,6 +3034,7 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb,
             gen_opc_instr_start[lj++] = 0;
     } else {
         tb->size = dc->pc - pc_start;
+        tb->icount = num_insns;
     }
 
     //optimize_flags();