diff -ur /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/helper.c qemu-snapshot-2007-08-14_05-dinero/target-mips/helper.c
--- /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/helper.c	2007-06-25 13:34:33.000000000 -0400
+++ qemu-snapshot-2007-08-14_05-dinero/target-mips/helper.c	2007-08-16 12:50:08.000000000 -0400
@@ -36,6 +36,47 @@
     TLBRET_MATCH = 0
 };
 
+
+FILE *memfile=NULL;
+unsigned char memfile_buf[4096];
+
+void helper_dump_pc(unsigned long address) {
+   
+   if (memfile==NULL) {
+      memfile=fopen("trace.mem","w");
+      /* 1 = _IOLBF */
+      setvbuf(memfile, memfile_buf, 1 , sizeof(memfile_buf));
+   }
+        
+   fprintf(memfile,"i %x 4\n",address);
+   fflush(memfile);
+   
+}
+
+
+/* generates trace file for dinero cache simulator */
+/* dinero output is */
+/*    X YYYYYYY Z   */ 
+/* where X is type, Y is address, Z is type */
+/* types are r=read w=write, some others  */
+
+void helper_dump_memtrace(unsigned long address,
+			  int load,int size) {
+        
+   if (memfile==NULL) {
+      memfile=fopen("trace.mem","w");
+      /* 1 = _IOLBF */
+      setvbuf(memfile, memfile_buf, 1 , sizeof(memfile_buf));
+   }
+        
+   fprintf(memfile,"%c %x %d\n",
+           load==1?'r':'w',address,size);
+   fflush(memfile);
+
+}
+
+
+
 /* no MMU emulation */
 int no_mmu_map_address (CPUState *env, target_ulong *physical, int *prot,
                         target_ulong address, int rw, int access_type)
diff -ur /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/op.c qemu-snapshot-2007-08-14_05-dinero/target-mips/op.c
--- /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/op.c	2007-06-25 13:34:33.000000000 -0400
+++ qemu-snapshot-2007-08-14_05-dinero/target-mips/op.c	2007-08-16 13:24:59.000000000 -0400
@@ -246,6 +246,10 @@
 #include "fop_template.c"
 #undef FTN
 
+void op_dump_pc(void) {
+   helper_dump_pc(PARAM1);
+}
+
 void op_dup_T0 (void)
 {
     T2 = T0;
diff -ur /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/op_mem.c qemu-snapshot-2007-08-14_05-dinero/target-mips/op_mem.c
--- /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/op_mem.c	2007-05-28 13:09:41.000000000 -0400
+++ qemu-snapshot-2007-08-14_05-dinero/target-mips/op_mem.c	2007-08-14 15:44:38.000000000 -0400
@@ -21,55 +21,64 @@
 /* Standard loads and stores */
 void glue(op_lb, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,1);
     T0 = glue(ldsb, MEMSUFFIX)(T0);
     RETURN();
 }
 
 void glue(op_lbu, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,1);
     T0 = glue(ldub, MEMSUFFIX)(T0);
     RETURN();
 }
 
 void glue(op_sb, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,0,1);
     glue(stb, MEMSUFFIX)(T0, T1);
     RETURN();
 }
 
 void glue(op_lh, MEMSUFFIX) (void)
 {
-    T0 = glue(ldsw, MEMSUFFIX)(T0);
+    helper_dump_memtrace(T0,1,2);
+    T0 = glue(ldsw, MEMSUFFIX)(T0);   
     RETURN();
 }
 
 void glue(op_lhu, MEMSUFFIX) (void)
 {
-    T0 = glue(lduw, MEMSUFFIX)(T0);
+    helper_dump_memtrace(T0,1,2);
+    T0 = glue(lduw, MEMSUFFIX)(T0);    
     RETURN();
 }
 
 void glue(op_sh, MEMSUFFIX) (void)
 {
-    glue(stw, MEMSUFFIX)(T0, T1);
+    helper_dump_memtrace(T0,0,2);
+    glue(stw, MEMSUFFIX)(T0, T1);    
     RETURN();
 }
 
 void glue(op_lw, MEMSUFFIX) (void)
 {
-    T0 = glue(ldl, MEMSUFFIX)(T0);
+    helper_dump_memtrace(T0,1,4);
+    T0 = glue(ldl, MEMSUFFIX)(T0);    
     RETURN();
 }
 
 void glue(op_lwu, MEMSUFFIX) (void)
 {
-    T0 = (uint32_t)glue(ldl, MEMSUFFIX)(T0);
+    helper_dump_memtrace(T0,1,4);
+    T0 = (uint32_t)glue(ldl, MEMSUFFIX)(T0);    
     RETURN();
 }
 
 void glue(op_sw, MEMSUFFIX) (void)
 {
-    glue(stl, MEMSUFFIX)(T0, T1);
+    helper_dump_memtrace(T0,0,4);
+    glue(stl, MEMSUFFIX)(T0, T1);    
     RETURN();
 }
 
@@ -78,20 +87,25 @@
 /* XXX: This is broken, CP0_BADVADDR has the wrong (aligned) value. */
 void glue(op_lwl, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,4);
     uint32_t tmp = glue(ldl, MEMSUFFIX)(T0 & ~3);
     CALL_FROM_TB1(glue(do_lwl, MEMSUFFIX), tmp);
+
     RETURN();
 }
 
 void glue(op_lwr, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,4);
     uint32_t tmp = glue(ldl, MEMSUFFIX)(T0 & ~3);
     CALL_FROM_TB1(glue(do_lwr, MEMSUFFIX), tmp);
+
     RETURN();
 }
 
 void glue(op_swl, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,0,4);   
     uint32_t tmp = glue(ldl, MEMSUFFIX)(T0 & ~3);
     tmp = CALL_FROM_TB1(glue(do_swl, MEMSUFFIX), tmp);
     glue(stl, MEMSUFFIX)(T0 & ~3, tmp);
@@ -100,6 +114,7 @@
 
 void glue(op_swr, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,0,4);
     uint32_t tmp = glue(ldl, MEMSUFFIX)(T0 & ~3);
     tmp = CALL_FROM_TB1(glue(do_swr, MEMSUFFIX), tmp);
     glue(stl, MEMSUFFIX)(T0 & ~3, tmp);
@@ -108,6 +123,7 @@
 
 void glue(op_ll, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,4);  
     T1 = T0;
     T0 = glue(ldl, MEMSUFFIX)(T0);
     env->CP0_LLAddr = T1;
@@ -133,12 +149,14 @@
 #ifdef TARGET_MIPS64
 void glue(op_ld, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,1,8);
     T0 = glue(ldq, MEMSUFFIX)(T0);
     RETURN();
 }
 
 void glue(op_sd, MEMSUFFIX) (void)
 {
+    helper_dump_memtrace(T0,0,8);   
     glue(stq, MEMSUFFIX)(T0, T1);
     RETURN();
 }
diff -ur /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/translate.c qemu-snapshot-2007-08-14_05-dinero/target-mips/translate.c
--- /home/vince/qemu/qemu-snapshot-2007-08-14_05/target-mips/translate.c	2007-06-26 16:26:03.000000000 -0400
+++ qemu-snapshot-2007-08-14_05-dinero/target-mips/translate.c	2007-08-15 17:24:47.000000000 -0400
@@ -5969,6 +5969,7 @@
             gen_opc_hflags[lj] = ctx.hflags & MIPS_HFLAG_BMASK;
             gen_opc_instr_start[lj] = 1;
         }
+        gen_op_dump_pc(ctx.pc);
         ctx.opcode = ldl_code(ctx.pc);
         decode_opc(env, &ctx);
         ctx.pc += 4;