added missing skyeye mmu code

12 files changed, 3333 insertions, 44 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 0d4a0ca7..35ef1c7b 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -19,6 +19,12 @@ set(SRCS    core.cpp
             arm/interpreter/vfp/vfpinsr.cpp
             arm/interpreter/vfp/vfpsingle.cpp
             arm/interpreter/mmu/arm1176jzf_s_mmu.cpp
+            arm/interpreter/mmu/cache.cpp
+            arm/interpreter/mmu/sa_mmu.cpp
+            arm/interpreter/mmu/rb.cpp
+            arm/interpreter/mmu/tlb.cpp
+            arm/interpreter/mmu/wb.cpp
+            arm/interpreter/mmu/xscale_copro.cpp
             elf/elf_reader.cpp
             file_sys/directory_file_system.cpp
             file_sys/meta_file_system.cpp
diff --git a/src/core/arm/interpreter/armmmu.h b/src/core/arm/interpreter/armmmu.h
index 2ceaa7c6..818108c9 100644
--- a/src/core/arm/interpreter/armmmu.h
+++ b/src/core/arm/interpreter/armmmu.h
@@ -178,12 +178,12 @@ typedef struct mmu_ops_s
 #include "core/arm/interpreter/mmu/cache.h"
 
 /*special process mmu.h*/
-//#include "core/arm/mmu/sa_mmu.h"
-//#include "core/arm/mmu/arm7100_mmu.h"
-//#include "core/arm/mmu/arm920t_mmu.h"
-//#include "core/arm/mmu/arm926ejs_mmu.h"
+#include "core/arm/interpreter/mmu/sa_mmu.h"
+//#include "core/arm/interpreter/mmu/arm7100_mmu.h"
+//#include "core/arm/interpreter/mmu/arm920t_mmu.h"
+//#include "core/arm/interpreter/mmu/arm926ejs_mmu.h"
 #include "core/arm/interpreter/mmu/arm1176jzf_s_mmu.h"
-//#include "core/arm/mmu/cortex_a9_mmu.h"
+//#include "core/arm/interpreter/mmu/cortex_a9_mmu.h"
 
 typedef struct mmu_state_t
 {
@@ -213,13 +213,13 @@ typedef struct mmu_state_t
 	ARMword copro_access;	// 15
 
 	mmu_ops_t ops;
-	//union
-	//{
-		//sa_mmu_t sa_mmu;
+	union
+	{
+		sa_mmu_t sa_mmu;
 		//arm7100_mmu_t arm7100_mmu;
 		//arm920t_mmu_t arm920t_mmu;
 		//arm926ejs_mmu_t arm926ejs_mmu;
-	//} u;
+	} u;
 } mmu_state_t;
 
 int mmu_init (ARMul_State * state);
diff --git a/src/core/arm/interpreter/mmu/cache.cpp b/src/core/arm/interpreter/mmu/cache.cpp
new file mode 100644
index 00000000..f3c4e053
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/cache.cpp
@@ -0,0 +1,370 @@
+#include "core/arm/interpreter/armdefs.h"
+
+/* mmu cache init
+ *
+ * @cache_t :cache_t to init
+ * @width	:cache line width in byte
+ * @way		:way of each cache set
+ * @set		:cache set num
+ *
+ * $ -1: error
+ * 	 0: sucess
+ */
+int
+mmu_cache_init (cache_s * cache_t, int width, int way, int set, int w_mode)
+{
+	int i, j;
+	cache_set_t *sets;
+	cache_line_t *lines;
+
+	/*alloc cache set */
+	sets = NULL;
+	lines = NULL;
+	//fprintf(stderr, "mmu_cache_init: mallloc beg size %d,sets 0x%x\n", sizeof(cache_set_t) * set,sets);
+	//exit(-1);
+	sets = (cache_set_t *) malloc (sizeof (cache_set_t) * set);
+	if (sets == NULL) {
+		ERROR_LOG(ARM11, "set malloc size %d\n", sizeof (cache_set_t) * set);
+		goto sets_error;
+	}
+	//fprintf(stderr, "mmu_cache_init: mallloc end sets 0x%x\n", sets);
+	cache_t->sets = sets;
+
+	/*init cache set */
+	for (i = 0; i < set; i++) {
+		/*alloc cache line */
+		lines = (cache_line_t *) malloc (sizeof (cache_line_t) * way);
+		if (lines == NULL) {
+			ERROR_LOG(ARM11, "line malloc size %d\n",
+				 sizeof (cache_line_t) * way);
+			goto lines_error;
+		}
+		/*init cache line */
+		for (j = 0; j < way; j++) {
+			lines[j].tag = 0;	//invalid
+			lines[j].data = (ARMword *) malloc (width);
+			if (lines[j].data == NULL) {
+				ERROR_LOG(ARM11, "data alloc size %d\n", width);
+				goto data_error;
+			}
+		}
+
+		sets[i].lines = lines;
+		sets[i].cycle = 0;
+
+	}
+	cache_t->width = width;
+	cache_t->set = set;
+	cache_t->way = way;
+	cache_t->w_mode = w_mode;
+	return 0;
+
+      data_error:
+	/*free data */
+	while (j-- > 0)
+		free (lines[j].data);
+	/*free data error line */
+	free (lines);
+      lines_error:
+	/*free lines already alloced */
+	while (i-- > 0) {
+		for (j = 0; j < way; j++)
+			free (sets[i].lines[j].data);
+		free (sets[i].lines);
+	}
+	/*free sets */
+	free (sets);
+      sets_error:
+	return -1;
+};
+
+/* free a cache_t's inner data, the ptr self is not freed,
+ * when needed do like below:
+ * 		mmu_cache_exit(cache);
+ * 		free(cache_t);
+ *
+ * @cache_t : the cache_t to free
+ */
+
+void
+mmu_cache_exit (cache_s * cache_t)
+{
+	int i, j;
+	cache_set_t *sets, *set;
+	cache_line_t *lines, *line;
+
+	/*free all set */
+	sets = cache_t->sets;
+	for (set = sets, i = 0; i < cache_t->set; i++, set++) {
+		/*free all line */
+		lines = set->lines;
+		for (line = lines, j = 0; j < cache_t->way; j++, line++)
+			free (line->data);
+		free (lines);
+	}
+	free (sets);
+}
+
+/* mmu cache search
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to search
+ * @va		:virtual address
+ *
+ * $	NULL:	no cache match
+ * 		cache	:cache matched
+ */
+cache_line_t *
+mmu_cache_search (ARMul_State * state, cache_s * cache_t, ARMword va)
+{
+	int i;
+	int set = va_cache_set (va, cache_t);
+	ARMword tag = va_cache_align (va, cache_t);
+	cache_line_t *cache;
+
+	cache_set_t *cache_set = cache_t->sets + set;
+	for (i = 0, cache = cache_set->lines; i < cache_t->way; i++, cache++) {
+		if ((cache->tag & TAG_VALID_FLAG)
+		    && (tag == va_cache_align (cache->tag, cache_t)))
+			return cache;
+	}
+	return NULL;
+}
+
+/* mmu cache search by set/index
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to search
+ * @index	:set/index value. 
+ *
+ * $	NULL:	no cache match
+ * 		cache	:cache matched
+ */
+cache_line_t *
+mmu_cache_search_by_index (ARMul_State * state, cache_s * cache_t,
+			   ARMword index)
+{
+	int way = cache_t->way;
+	int set_v = index_cache_set (index, cache_t);
+	int i = 0, index_v = 0;
+	cache_set_t *set;
+
+	while ((way >>= 1) >= 1)
+		i++;
+	index_v = index >> (32 - i);
+	set = cache_t->sets + set_v;
+
+	return set->lines + index_v;
+}
+
+
+/* mmu cache alloc
+ *
+ * @state :ARMul_State
+ * @cache_t	:cache_t to alloc from
+ * @va		:virtual address that require cache alloc, need not cache aligned
+ * @pa		:physical address of va
+ *
+ * $	cache_alloced, always alloc OK
+ */
+cache_line_t *
+mmu_cache_alloc (ARMul_State * state, cache_s * cache_t, ARMword va,
+		 ARMword pa)
+{
+	cache_line_t *cache;
+	cache_set_t *set;
+	int i;
+
+	va = va_cache_align (va, cache_t);
+	pa = va_cache_align (pa, cache_t);
+
+	set = &cache_t->sets[va_cache_set (va, cache_t)];
+
+	/*robin-round */
+	cache = &set->lines[set->cycle++];
+	if (set->cycle == cache_t->way)
+		set->cycle = 0;
+
+	if (cache_t->w_mode == CACHE_WRITE_BACK) {
+		ARMword t;
+
+		/*if cache valid, try to write back */
+		if (cache->tag & TAG_VALID_FLAG) {
+			mmu_cache_write_back (state, cache_t, cache);
+		}
+		/*read in cache_line */
+		t = pa;
+		for (i = 0; i < (cache_t->width >> WORD_SHT);
+		     i++, t += WORD_SIZE) {
+			//cache->data[i] = mem_read_word (state, t);
+			bus_read(32, t, &cache->data[i]);
+		}
+	}
+	/*store tag and pa */
+	cache->tag = va | TAG_VALID_FLAG;
+	cache->pa = pa;
+
+	return cache;
+};
+
+/* mmu_cache_write_back write cache data to memory
+ * @state
+ * @cache_t :cache_t of the cache line
+ * @cache : cache line
+ */
+void
+mmu_cache_write_back (ARMul_State * state, cache_s * cache_t,
+		      cache_line_t * cache)
+{
+	ARMword pa = cache->pa;
+	int nw = cache_t->width >> WORD_SHT;
+	ARMword *data = cache->data;
+	int i;
+	int t0, t1, t2;
+
+	if ((cache->tag & 1) == 0)
+		return;
+
+	switch (cache->
+		tag & ~1 & (TAG_FIRST_HALF_DIRTY | TAG_LAST_HALF_DIRTY)) {
+	case 0:
+		return;
+	case TAG_FIRST_HALF_DIRTY:
+		nw /= 2;
+		break;
+	case TAG_LAST_HALF_DIRTY:
+		nw /= 2;
+		pa += nw << WORD_SHT;
+		data += nw;
+		break;
+	case TAG_FIRST_HALF_DIRTY | TAG_LAST_HALF_DIRTY:
+		break;
+	}
+	for (i = 0; i < nw; i++, data++, pa += WORD_SIZE)
+		//mem_write_word (state, pa, *data);
+		bus_write(32, pa, *data);
+
+	cache->tag &= ~(TAG_FIRST_HALF_DIRTY | TAG_LAST_HALF_DIRTY);
+};
+
+
+/* mmu_cache_clean: clean a cache of va in cache_t
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to clean
+ * @va		:virtaul address
+ */
+void
+mmu_cache_clean (ARMul_State * state, cache_s * cache_t, ARMword va)
+{
+	cache_line_t *cache;
+
+	cache = mmu_cache_search (state, cache_t, va);
+	if (cache)
+		mmu_cache_write_back (state, cache_t, cache);
+}
+
+/* mmu_cache_clean_by_index: clean a cache by set/index format value
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to clean
+ * @va		:set/index format value
+ */
+void
+mmu_cache_clean_by_index (ARMul_State * state, cache_s * cache_t,
+			  ARMword index)
+{
+	cache_line_t *cache;
+
+	cache = mmu_cache_search_by_index (state, cache_t, index);
+	if (cache)
+		mmu_cache_write_back (state, cache_t, cache);
+}
+
+/* mmu_cache_invalidate : invalidate a cache of va
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to invalid
+ * @va		:virt_addr to invalid
+ */
+void
+mmu_cache_invalidate (ARMul_State * state, cache_s * cache_t, ARMword va)
+{
+	cache_line_t *cache;
+
+	cache = mmu_cache_search (state, cache_t, va);
+	if (cache) {
+		mmu_cache_write_back (state, cache_t, cache);
+		cache->tag = 0;
+	}
+}
+
+/* mmu_cache_invalidate_by_index : invalidate a cache by index format
+ *
+ * @state	:ARMul_State
+ * @cache_t	:cache_t to invalid
+ * @index	:set/index data
+ */
+void
+mmu_cache_invalidate_by_index (ARMul_State * state, cache_s * cache_t,
+			       ARMword index)
+{
+	cache_line_t *cache;
+
+	cache = mmu_cache_search_by_index (state, cache_t, index);
+	if (cache) {
+		mmu_cache_write_back (state, cache_t, cache);
+		cache->tag = 0;
+	}
+}
+
+/* mmu_cache_invalidate_all
+ *
+ * @state:
+ * @cache_t
+ * */
+void
+mmu_cache_invalidate_all (ARMul_State * state, cache_s * cache_t)
+{
+	int i, j;
+	cache_set_t *set;
+	cache_line_t *cache;
+
+	set = cache_t->sets;
+	for (i = 0; i < cache_t->set; i++, set++) {
+		cache = set->lines;
+		for (j = 0; j < cache_t->way; j++, cache++) {
+			mmu_cache_write_back (state, cache_t, cache);
+			cache->tag = 0;
+		}
+	}
+};
+
+void
+mmu_cache_soft_flush (ARMul_State * state, cache_s * cache_t, ARMword pa)
+{
+	ARMword set, way;
+	cache_line_t *cache;
+	pa = (pa / cache_t->width);
+	way = pa & (cache_t->way - 1);
+	set = (pa / cache_t->way) & (cache_t->set - 1);
+	cache = &cache_t->sets[set].lines[way];
+
+	mmu_cache_write_back (state, cache_t, cache);
+	cache->tag = 0;
+}
+
+cache_line_t*  mmu_cache_dirty_cache(ARMul_State *state,cache_s *cache){
+	int i;
+	int j;
+	cache_line_t *cache_line = NULL;
+	cache_set_t *cache_set = cache->sets;
+	int sets = cache->set;
+	for (i = 0; i < sets; i++){
+		for(j = 0,cache_line = &cache_set[i].lines[0]; j < cache->way; j++,cache_line++){
+			if((cache_line->tag & TAG_FIRST_HALF_DIRTY) || (cache_line->tag & TAG_LAST_HALF_DIRTY))
+				return cache_line;
+		}
+	}
+	return NULL;
+}
diff --git a/src/core/arm/interpreter/mmu/rb.cpp b/src/core/arm/interpreter/mmu/rb.cpp
new file mode 100644
index 00000000..07b11e31
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/rb.cpp
@@ -0,0 +1,126 @@
+#include "core/arm/interpreter/armdefs.h"
+
+/*chy 2004-06-06, fix bug found by wenye@cs.ucsb.edu*/
+ARMword rb_masks[] = {
+	0x0,			//RB_INVALID
+	4,			//RB_1
+	16,			//RB_4
+	32,			//RB_8
+};
+
+/*mmu_rb_init
+ * @rb_t	:rb_t to init
+ * @num		:number of entry
+ * */
+int
+mmu_rb_init (rb_s * rb_t, int num)
+{
+	int i;
+	rb_entry_t *entrys;
+
+	entrys = (rb_entry_t *) malloc (sizeof (*entrys) * num);
+	if (entrys == NULL) {
+		printf ("SKYEYE:mmu_rb_init malloc error\n");
+		return -1;
+	}
+	for (i = 0; i < num; i++) {
+		entrys[i].type = RB_INVALID;
+		entrys[i].fault = NO_FAULT;
+	}
+
+	rb_t->entrys = entrys;
+	rb_t->num = num;
+	return 0;
+}
+
+/*mmu_rb_exit*/
+void
+mmu_rb_exit (rb_s * rb_t)
+{
+	free (rb_t->entrys);
+};
+
+/*mmu_rb_search
+ * @rb_t	:rb_t to serach
+ * @va		:va address to math
+ *
+ * $	NULL :not match
+ * 		NO-NULL:
+ * */
+rb_entry_t *
+mmu_rb_search (rb_s * rb_t, ARMword va)
+{
+	int i;
+	rb_entry_t *rb = rb_t->entrys;
+
+	DEBUG_LOG(ARM11, "va = %x\n", va);
+	for (i = 0; i < rb_t->num; i++, rb++) {
+		//2004-06-06 lyh  bug from wenye@cs.ucsb.edu
+		if (rb->type) {
+			if ((va >= rb->va)
+			    && (va < (rb->va + rb_masks[rb->type])))
+				return rb;
+		}
+	}
+	return NULL;
+};
+
+void
+mmu_rb_invalidate_entry (rb_s * rb_t, int i)
+{
+	rb_t->entrys[i].type = RB_INVALID;
+}
+
+void
+mmu_rb_invalidate_all (rb_s * rb_t)
+{
+	int i;
+
+	for (i = 0; i < rb_t->num; i++)
+		mmu_rb_invalidate_entry (rb_t, i);
+};
+
+void
+mmu_rb_load (ARMul_State * state, rb_s * rb_t, int i_rb, int type, ARMword va)
+{
+	rb_entry_t *rb;
+	int i;
+	ARMword max_start, min_end;
+	fault_t fault;
+	tlb_entry_t *tlb;
+
+	/*align va according to type */
+	va &= ~(rb_masks[type] - 1);
+	/*invalidate all RB match [va, va + rb_masks[type]] */
+	for (rb = rb_t->entrys, i = 0; i < rb_t->num; i++, rb++) {
+		if (rb->type) {
+			max_start = max (va, rb->va);
+			min_end =
+				min (va + rb_masks[type],
+				     rb->va + rb_masks[rb->type]);
+			if (max_start < min_end)
+				rb->type = RB_INVALID;
+		}
+	}
+	/*load word */
+	rb = &rb_t->entrys[i_rb];
+	rb->type = type;
+	fault = translate (state, va, D_TLB (), &tlb);
+	if (fault) {
+		rb->fault = fault;
+		return;
+	}
+	fault = check_access (state, va, tlb, 1);
+	if (fault) {
+		rb->fault = fault;
+		return;
+	}
+
+	rb->fault = NO_FAULT;
+	va = tlb_va_to_pa (tlb, va);
+	//2004-06-06 lyh  bug from wenye@cs.ucsb.edu
+	for (i = 0; i < (rb_masks[type] / 4); i++, va += WORD_SIZE) {
+		//rb->data[i] = mem_read_word (state, va);
+		bus_read(32, va, &rb->data[i]);
+	};
+}
diff --git a/src/core/arm/interpreter/mmu/sa_mmu.cpp b/src/core/arm/interpreter/mmu/sa_mmu.cpp
new file mode 100644
index 00000000..eff5002d
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/sa_mmu.cpp
@@ -0,0 +1,864 @@
+/*
+    armmmu.c - Memory Management Unit emulation.
+    ARMulator extensions for the ARM7100 family.
+    Copyright (C) 1999  Ben Williamson
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <assert.h>
+#include <string.h>
+
+#include "core/arm/interpreter/armdefs.h"
+
+/**
+ *  The interface of read data from bus
+ */
+int bus_read(short size, int addr, uint32_t * value) {
+    ERROR_LOG(ARM11, "unimplemented bus_read");
+    return 0;
+}
+
+/**
+ * The interface of write data from bus
+ */
+int bus_write(short size, int addr, uint32_t value) {
+    ERROR_LOG(ARM11, "unimplemented bus_write");
+    return 0;
+}
+
+
+typedef struct sa_mmu_desc_s
+{
+	int i_tlb;
+	cache_desc_t i_cache;
+
+	int d_tlb;
+	cache_desc_t main_d_cache;
+	cache_desc_t mini_d_cache;
+	int rb;
+	wb_desc_t wb;
+} sa_mmu_desc_t;
+
+static sa_mmu_desc_t sa11xx_mmu_desc = {
+	32,
+	{32, 32, 16, CACHE_WRITE_BACK},
+
+	32,
+	{32, 32, 8, CACHE_WRITE_BACK},
+	{32, 2, 8, CACHE_WRITE_BACK},
+	4,
+	//{8, 4},  for word size 
+	{8, 16},		//for byte size,   chy 2003-07-11
+};
+
+static fault_t sa_mmu_write (ARMul_State * state, ARMword va, ARMword data,
+			     ARMword datatype);
+static fault_t sa_mmu_read (ARMul_State * state, ARMword va, ARMword * data,
+			    ARMword datatype);
+static fault_t update_cache (ARMul_State * state, ARMword va, ARMword data,
+			     ARMword datatype, cache_line_t * cache,
+			     cache_s * cache_t, ARMword real_va);
+
+void
+mmu_wb_write_bytes (ARMul_State * state, wb_s * wb_t, ARMword pa,
+		    ARMbyte * data, int n);
+int
+sa_mmu_init (ARMul_State * state)
+{
+	sa_mmu_desc_t *desc;
+	cache_desc_t *c_desc;
+
+	state->mmu.control = 0x70;
+	state->mmu.translation_table_base = 0xDEADC0DE;
+	state->mmu.domain_access_control = 0xDEADC0DE;
+	state->mmu.fault_status = 0;
+	state->mmu.fault_address = 0;
+	state->mmu.process_id = 0;
+
+	desc = &sa11xx_mmu_desc;
+	if (mmu_tlb_init (I_TLB (), desc->i_tlb)) {
+		ERROR_LOG(ARM11, "i_tlb init %d\n", -1);
+		goto i_tlb_init_error;
+	}
+
+	c_desc = &desc->i_cache;
+	if (mmu_cache_init (I_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "i_cache init %d\n", -1);
+		goto i_cache_init_error;
+	}
+
+	if (mmu_tlb_init (D_TLB (), desc->d_tlb)) {
+		ERROR_LOG(ARM11, "d_tlb init %d\n", -1);
+		goto d_tlb_init_error;
+	}
+
+	c_desc = &desc->main_d_cache;
+	if (mmu_cache_init (MAIN_D_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "main_d_cache init %d\n", -1);
+		goto main_d_cache_init_error;
+	}
+
+	c_desc = &desc->mini_d_cache;
+	if (mmu_cache_init (MINI_D_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "mini_d_cache init %d\n", -1);
+		goto mini_d_cache_init_error;
+	}
+
+	if (mmu_wb_init (WB (), desc->wb.num, desc->wb.nb)) {
+		ERROR_LOG(ARM11, "wb init %d\n", -1);
+		goto wb_init_error;
+	}
+
+	if (mmu_rb_init (RB (), desc->rb)) {
+		ERROR_LOG(ARM11, "rb init %d\n", -1);
+		goto rb_init_error;
+	}
+	return 0;
+
+      rb_init_error:
+	mmu_wb_exit (WB ());
+      wb_init_error:
+	mmu_cache_exit (MINI_D_CACHE ());
+      mini_d_cache_init_error:
+	mmu_cache_exit (MAIN_D_CACHE ());
+      main_d_cache_init_error:
+	mmu_tlb_exit (D_TLB ());
+      d_tlb_init_error:
+	mmu_cache_exit (I_CACHE ());
+      i_cache_init_error:
+	mmu_tlb_exit (I_TLB ());
+      i_tlb_init_error:
+	return -1;
+}
+
+void
+sa_mmu_exit (ARMul_State * state)
+{
+	mmu_rb_exit (RB ());
+	mmu_wb_exit (WB ());
+	mmu_cache_exit (MINI_D_CACHE ());
+	mmu_cache_exit (MAIN_D_CACHE ());
+	mmu_tlb_exit (D_TLB ());
+	mmu_cache_exit (I_CACHE ());
+	mmu_tlb_exit (I_TLB ());
+};
+
+
+static fault_t
+sa_mmu_load_instr (ARMul_State * state, ARMword va, ARMword * instr)
+{
+	fault_t fault;
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	int c;			//cache bit
+	ARMword pa;		//physical addr
+
+	static int debug_count = 0;	//used for debug
+
+	DEBUG_LOG(ARM11, "va = %x\n", va);
+
+	va = mmu_pid_va_map (va);
+	if (MMU_Enabled) {
+		/*align check */
+		if ((va & (WORD_SIZE - 1)) && MMU_Aligned) {
+			DEBUG_LOG(ARM11, "align\n");
+			return ALIGNMENT_FAULT;
+		}
+		else
+			va &= ~(WORD_SIZE - 1);
+
+		/*translate tlb */
+		fault = translate (state, va, I_TLB (), &tlb);
+		if (fault) {
+			DEBUG_LOG(ARM11, "translate\n");
+			return fault;
+		}
+
+		/*check access */
+		fault = check_access (state, va, tlb, 1);
+		if (fault) {
+			DEBUG_LOG(ARM11, "check_fault\n");
+			return fault;
+		}
+	}
+
+	/*search cache no matter MMU enabled/disabled */
+	cache = mmu_cache_search (state, I_CACHE (), va);
+	if (cache) {
+		*instr = cache->data[va_cache_index (va, I_CACHE ())];
+		return NO_FAULT;
+	}
+
+	/*if MMU disabled or C flag is set alloc cache */
+	if (MMU_Disabled) {
+		c = 1;
+		pa = va;
+	}
+	else {
+		c = tlb_c_flag (tlb);
+		pa = tlb_va_to_pa (tlb, va);
+	}
+
+	if (c) {
+		int index;
+
+		debug_count++;
+		cache = mmu_cache_alloc (state, I_CACHE (), va, pa);
+		index = va_cache_index (va, I_CACHE ());
+		*instr = cache->data[va_cache_index (va, I_CACHE ())];
+	}
+	else
+		//*instr = mem_read_word (state, pa);
+		bus_read(32, pa, instr);
+
+	return NO_FAULT;
+};
+
+
+
+static fault_t
+sa_mmu_read_byte (ARMul_State * state, ARMword virt_addr, ARMword * data)
+{
+	//ARMword temp,offset;
+	fault_t fault;
+	fault = sa_mmu_read (state, virt_addr, data, ARM_BYTE_TYPE);
+	return fault;
+}
+
+static fault_t
+sa_mmu_read_halfword (ARMul_State * state, ARMword virt_addr, ARMword * data)
+{
+	//ARMword temp,offset;
+	fault_t fault;
+	fault = sa_mmu_read (state, virt_addr, data, ARM_HALFWORD_TYPE);
+	return fault;
+}
+
+static fault_t
+sa_mmu_read_word (ARMul_State * state, ARMword virt_addr, ARMword * data)
+{
+	return sa_mmu_read (state, virt_addr, data, ARM_WORD_TYPE);
+}
+
+
+
+
+static fault_t
+sa_mmu_read (ARMul_State * state, ARMword va, ARMword * data,
+	     ARMword datatype)
+{
+	fault_t fault;
+	rb_entry_t *rb;
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	ARMword pa, real_va, temp, offset;
+
+	DEBUG_LOG(ARM11, "va = %x\n", va);
+
+	va = mmu_pid_va_map (va);
+	real_va = va;
+	/*if MMU disabled, memory_read */
+	if (MMU_Disabled) {
+		//*data = mem_read_word(state, va);
+		if (datatype == ARM_BYTE_TYPE)
+			//*data = mem_read_byte (state, va);
+			bus_read(8, va, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//*data = mem_read_halfword (state, va);
+			bus_read(16, va, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//*data = mem_read_word (state, va);
+			bus_read(32, va, data);
+		else {
+			printf ("SKYEYE:1 sa_mmu_read error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+
+		return NO_FAULT;
+	}
+
+	/*align check */
+	if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) ||
+	    ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) {
+		DEBUG_LOG(ARM11, "align\n");
+		return ALIGNMENT_FAULT;
+	}			// else
+
+	va &= ~(WORD_SIZE - 1);
+
+	/*translate va to tlb */
+	fault = translate (state, va, D_TLB (), &tlb);
+	if (fault) {
+		DEBUG_LOG(ARM11, "translate\n");
+		return fault;
+	}
+	/*check access permission */
+	fault = check_access (state, va, tlb, 1);
+	if (fault)
+		return fault;
+	/*search in read buffer */
+	rb = mmu_rb_search (RB (), va);
+	if (rb) {
+		if (rb->fault)
+			return rb->fault;
+		*data = rb->data[(va & (rb_masks[rb->type] - 1)) >> WORD_SHT];
+		goto datatrans;
+		//return 0;
+	};
+	/*search main cache */
+	cache = mmu_cache_search (state, MAIN_D_CACHE (), va);
+	if (cache) {
+		*data = cache->data[va_cache_index (va, MAIN_D_CACHE ())];
+		goto datatrans;
+		//return 0;
+	}
+	/*search mini cache */
+	cache = mmu_cache_search (state, MINI_D_CACHE (), va);
+	if (cache) {
+		*data = cache->data[va_cache_index (va, MINI_D_CACHE ())];
+		goto datatrans;
+		//return 0;
+	}
+
+	/*get phy_addr */
+	pa = tlb_va_to_pa (tlb, va);
+	if ((pa >= 0xe0000000) && (pa < 0xe8000000)) {
+		if (tlb_c_flag (tlb)) {
+			if (tlb_b_flag (tlb)) {
+				mmu_cache_soft_flush (state, MAIN_D_CACHE (),
+						      pa);
+			}
+			else {
+				mmu_cache_soft_flush (state, MINI_D_CACHE (),
+						      pa);
+			}
+		}
+		return NO_FAULT;
+	}
+
+	/*if Buffer, drain Write Buffer first */
+	if (tlb_b_flag (tlb))
+		mmu_wb_drain_all (state, WB ());
+
+	/*alloc cache or mem_read */
+	if (tlb_c_flag (tlb) && MMU_DCacheEnabled) {
+		cache_s *cache_t;
+
+		if (tlb_b_flag (tlb))
+			cache_t = MAIN_D_CACHE ();
+		else
+			cache_t = MINI_D_CACHE ();
+		cache = mmu_cache_alloc (state, cache_t, va, pa);
+		*data = cache->data[va_cache_index (va, cache_t)];
+	}
+	else {
+		//*data = mem_read_word(state, pa);
+		if (datatype == ARM_BYTE_TYPE)
+			//*data = mem_read_byte (state, pa | (real_va & 3));
+			bus_read(8, pa | (real_va & 3), data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//*data = mem_read_halfword (state, pa | (real_va & 2));
+			bus_read(16, pa | (real_va & 2), data);
+		else if (datatype == ARM_WORD_TYPE)
+			//*data = mem_read_word (state, pa);
+			bus_read(32, pa, data);
+		else {
+			printf ("SKYEYE:2 sa_mmu_read error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+		return NO_FAULT;
+	}
+
+
+      datatrans:
+	if (datatype == ARM_HALFWORD_TYPE) {
+		temp = *data;
+		offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3;	/* bit offset into the word */
+		*data = (temp >> offset) & 0xffff;
+	}
+	else if (datatype == ARM_BYTE_TYPE) {
+		temp = *data;
+		offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3;	/* bit offset into the word */
+		*data = (temp >> offset & 0xffL);
+	}
+      end:
+	return NO_FAULT;
+}
+
+
+static fault_t
+sa_mmu_write_byte (ARMul_State * state, ARMword virt_addr, ARMword data)
+{
+	return sa_mmu_write (state, virt_addr, data, ARM_BYTE_TYPE);
+}
+
+static fault_t
+sa_mmu_write_halfword (ARMul_State * state, ARMword virt_addr, ARMword data)
+{
+	return sa_mmu_write (state, virt_addr, data, ARM_HALFWORD_TYPE);
+}
+
+static fault_t
+sa_mmu_write_word (ARMul_State * state, ARMword virt_addr, ARMword data)
+{
+	return sa_mmu_write (state, virt_addr, data, ARM_WORD_TYPE);
+}
+
+
+
+static fault_t
+sa_mmu_write (ARMul_State * state, ARMword va, ARMword data, ARMword datatype)
+{
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	int b;
+	ARMword pa, real_va;
+	fault_t fault;
+
+	DEBUG_LOG(ARM11, "va = %x, val = %x\n", va, data);
+	va = mmu_pid_va_map (va);
+	real_va = va;
+
+	/*search instruction cache */
+	cache = mmu_cache_search (state, I_CACHE (), va);
+	if (cache) {
+		update_cache (state, va, data, datatype, cache, I_CACHE (),
+			      real_va);
+	}
+
+	if (MMU_Disabled) {
+		//mem_write_word(state, va, data);
+		if (datatype == ARM_BYTE_TYPE)
+			//mem_write_byte (state, va, data);
+			bus_write(8, va, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//mem_write_halfword (state, va, data);
+			bus_write(16, va, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//mem_write_word (state, va, data);
+			bus_write(32, va, data);
+		else {
+			printf ("SKYEYE:1 sa_mmu_write error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+
+		return NO_FAULT;
+	}
+	/*align check */
+	//if ((va & (WORD_SIZE - 1)) && MMU_Aligned){
+	if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) ||
+	    ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) {
+		DEBUG_LOG(ARM11, "align\n");
+		return ALIGNMENT_FAULT;
+	}			//else
+	va &= ~(WORD_SIZE - 1);
+	/*tlb translate */
+	fault = translate (state, va, D_TLB (), &tlb);
+	if (fault) {
+		DEBUG_LOG(ARM11, "translate\n");
+		return fault;
+	}
+	/*tlb check access */
+	fault = check_access (state, va, tlb, 0);
+	if (fault) {
+		DEBUG_LOG(ARM11, "check_access\n");
+		return fault;
+	}
+	/*search main cache */
+	cache = mmu_cache_search (state, MAIN_D_CACHE (), va);
+	if (cache) {
+		update_cache (state, va, data, datatype, cache,
+			      MAIN_D_CACHE (), real_va);
+	}
+	else {
+		/*search mini cache */
+		cache = mmu_cache_search (state, MINI_D_CACHE (), va);
+		if (cache) {
+			update_cache (state, va, data, datatype, cache,
+				      MINI_D_CACHE (), real_va);
+		}
+	}
+
+	if (!cache) {
+		b = tlb_b_flag (tlb);
+		pa = tlb_va_to_pa (tlb, va);
+		if (b) {
+			if (MMU_WBEnabled) {
+				if (datatype == ARM_WORD_TYPE)
+					mmu_wb_write_bytes (state, WB (), pa,
+							    (ARMbyte*)&data, 4);
+				else if (datatype == ARM_HALFWORD_TYPE)
+					mmu_wb_write_bytes (state, WB (),
+							    (pa |
+							     (real_va & 2)),
+							    (ARMbyte*)&data, 2);
+				else if (datatype == ARM_BYTE_TYPE)
+					mmu_wb_write_bytes (state, WB (),
+							    (pa |
+							     (real_va & 3)),
+							    (ARMbyte*)&data, 1);
+
+			}
+			else {
+				if (datatype == ARM_WORD_TYPE)
+					//mem_write_word (state, pa, data);
+					bus_write(32, pa, data);
+				else if (datatype == ARM_HALFWORD_TYPE)
+					/*
+					mem_write_halfword (state,
+							    (pa |
+							     (real_va & 2)),
+							    data);
+					*/
+					bus_write(16, pa | (real_va & 2), data);
+				else if (datatype == ARM_BYTE_TYPE)
+					/*
+					mem_write_byte (state,
+							(pa | (real_va & 3)),
+							data);
+					*/
+					bus_write(8, pa | (real_va & 3), data);
+			}
+		}
+		else {
+			mmu_wb_drain_all (state, WB ());
+
+			if (datatype == ARM_WORD_TYPE)
+				//mem_write_word (state, pa, data);
+				bus_write(32, pa, data);
+			else if (datatype == ARM_HALFWORD_TYPE)
+				/*
+					mem_write_halfword (state,
+						    (pa | (real_va & 2)),
+						    data);
+				*/
+				bus_write(16, pa | (real_va & 2), data);
+			else if (datatype == ARM_BYTE_TYPE)
+				/*
+				mem_write_byte (state, (pa | (real_va & 3)),
+						data);
+				*/
+				bus_write(8, pa | (real_va & 3), data);
+		}
+	}
+	return NO_FAULT;
+}
+
+static fault_t
+update_cache (ARMul_State * state, ARMword va, ARMword data, ARMword datatype,
+	      cache_line_t * cache, cache_s * cache_t, ARMword real_va)
+{
+	ARMword temp, offset;
+
+	ARMword index = va_cache_index (va, cache_t);
+
+	//cache->data[index] = data;
+
+	if (datatype == ARM_WORD_TYPE)
+		cache->data[index] = data;
+	else if (datatype == ARM_HALFWORD_TYPE) {
+		temp = cache->data[index];
+		offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3;	/* bit offset into the word */
+		cache->data[index] =
+			(temp & ~(0xffffL << offset)) | ((data & 0xffffL) <<
+							 offset);
+	}
+	else if (datatype == ARM_BYTE_TYPE) {
+		temp = cache->data[index];
+		offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3;	/* bit offset into the word */
+		cache->data[index] =
+			(temp & ~(0xffL << offset)) | ((data & 0xffL) <<
+						       offset);
+	}
+
+	if (index < (cache_t->width >> (WORD_SHT + 1)))
+		cache->tag |= TAG_FIRST_HALF_DIRTY;
+	else
+		cache->tag |= TAG_LAST_HALF_DIRTY;
+
+	return NO_FAULT;
+}
+
+ARMword
+sa_mmu_mrc (ARMul_State * state, ARMword instr, ARMword * value)
+{
+	mmu_regnum_t creg = (mmu_regnum_t)(BITS (16, 19) & 15);
+	ARMword data;
+
+	switch (creg) {
+	case MMU_ID:
+//              printf("mmu_mrc read ID     ");
+		data = 0x41007100;	/* v3 */
+		data = state->cpu->cpu_val;
+		break;
+	case MMU_CONTROL:
+//              printf("mmu_mrc read CONTROL");
+		data = state->mmu.control;
+		break;
+	case MMU_TRANSLATION_TABLE_BASE:
+//              printf("mmu_mrc read TTB    ");
+		data = state->mmu.translation_table_base;
+		break;
+	case MMU_DOMAIN_ACCESS_CONTROL:
+//              printf("mmu_mrc read DACR   ");
+		data = state->mmu.domain_access_control;
+		break;
+	case MMU_FAULT_STATUS:
+//              printf("mmu_mrc read FSR    ");
+		data = state->mmu.fault_status;
+		break;
+	case MMU_FAULT_ADDRESS:
+//              printf("mmu_mrc read FAR    ");
+		data = state->mmu.fault_address;
+		break;
+	case MMU_PID:
+		data = state->mmu.process_id;
+	default:
+		printf ("mmu_mrc read UNKNOWN - reg %d\n", creg);
+		data = 0;
+		break;
+	}
+//      printf("\t\t\t\t\tpc = 0x%08x\n", state->Reg[15]);
+	*value = data;
+	return data;
+}
+
+void
+sa_mmu_cache_ops (ARMul_State * state, ARMword instr, ARMword value)
+{
+	int CRm, OPC_2;
+
+	CRm = BITS (0, 3);
+	OPC_2 = BITS (5, 7);
+
+	if (OPC_2 == 0 && CRm == 7) {
+		mmu_cache_invalidate_all (state, I_CACHE ());
+		mmu_cache_invalidate_all (state, MAIN_D_CACHE ());
+		mmu_cache_invalidate_all (state, MINI_D_CACHE ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 5) {
+		mmu_cache_invalidate_all (state, I_CACHE ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 6) {
+		mmu_cache_invalidate_all (state, MAIN_D_CACHE ());
+		mmu_cache_invalidate_all (state, MINI_D_CACHE ());
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 6) {
+		mmu_cache_invalidate (state, MAIN_D_CACHE (), value);
+		mmu_cache_invalidate (state, MINI_D_CACHE (), value);
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 0xa) {
+		mmu_cache_clean (state, MAIN_D_CACHE (), value);
+		mmu_cache_clean (state, MINI_D_CACHE (), value);
+		return;
+	}
+
+	if (OPC_2 == 4 && CRm == 0xa) {
+		mmu_wb_drain_all (state, WB ());
+		return;
+	}
+	ERROR_LOG(ARM11, "Unknow OPC_2 = %x CRm = %x\n", OPC_2, CRm);
+}
+
+static void
+sa_mmu_tlb_ops (ARMul_State * state, ARMword instr, ARMword value)
+{
+	int CRm, OPC_2;
+
+	CRm = BITS (0, 3);
+	OPC_2 = BITS (5, 7);
+
+
+	if (OPC_2 == 0 && CRm == 0x7) {
+		mmu_tlb_invalidate_all (state, I_TLB ());
+		mmu_tlb_invalidate_all (state, D_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 0x5) {
+		mmu_tlb_invalidate_all (state, I_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 0x6) {
+		mmu_tlb_invalidate_all (state, D_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 0x6) {
+		mmu_tlb_invalidate_entry (state, D_TLB (), value);
+		return;
+	}
+
+	ERROR_LOG(ARM11, "Unknow OPC_2 = %x CRm = %x\n", OPC_2, CRm);
+}
+
+static void
+sa_mmu_rb_ops (ARMul_State * state, ARMword instr, ARMword value)
+{
+	int CRm, OPC_2;
+
+	CRm = BITS (0, 3);
+	OPC_2 = BITS (5, 7);
+
+	if (OPC_2 == 0x0 && CRm == 0x0) {
+		mmu_rb_invalidate_all (RB ());
+		return;
+	}
+
+	if (OPC_2 == 0x2) {
+		int idx = CRm & 0x3;
+		int type = ((CRm >> 2) & 0x3) + 1;
+
+		if ((idx < 4) && (type < 4))
+			mmu_rb_load (state, RB (), idx, type, value);
+		return;
+	}
+
+	if ((OPC_2 == 1) && (CRm < 4)) {
+		mmu_rb_invalidate_entry (RB (), CRm);
+		return;
+	}
+
+	ERROR_LOG(ARM11, "Unknow OPC_2 = %x CRm = %x\n", OPC_2, CRm);
+}
+
+static ARMword
+sa_mmu_mcr (ARMul_State * state, ARMword instr, ARMword value)
+{
+	mmu_regnum_t creg = (mmu_regnum_t)(BITS (16, 19) & 15);
+	if (!strncmp (state->cpu->cpu_arch_name, "armv4", 5)) {
+		switch (creg) {
+		case MMU_CONTROL:
+//              printf("mmu_mcr wrote CONTROL      ");
+			state->mmu.control = (value | 0x70) & 0xFFFD;
+			break;
+		case MMU_TRANSLATION_TABLE_BASE:
+//              printf("mmu_mcr wrote TTB          ");
+			state->mmu.translation_table_base =
+				value & 0xFFFFC000;
+			break;
+		case MMU_DOMAIN_ACCESS_CONTROL:
+//              printf("mmu_mcr wrote DACR         ");
+			state->mmu.domain_access_control = value;
+			break;
+
+		case MMU_FAULT_STATUS:
+			state->mmu.fault_status = value & 0xFF;
+			break;
+		case MMU_FAULT_ADDRESS:
+			state->mmu.fault_address = value;
+			break;
+
+		case MMU_CACHE_OPS:
+			sa_mmu_cache_ops (state, instr, value);
+			break;
+		case MMU_TLB_OPS:
+			sa_mmu_tlb_ops (state, instr, value);
+			break;
+		case MMU_SA_RB_OPS:
+			sa_mmu_rb_ops (state, instr, value);
+			break;
+		case MMU_SA_DEBUG:
+			break;
+		case MMU_SA_CP15_R15:
+			break;
+		case MMU_PID:
+			//2004-06-06 lyh, bug provided by wen ye wenye@cs.ucsb.edu
+			state->mmu.process_id = value & 0x7e000000;
+			break;
+
+		default:
+			printf ("mmu_mcr wrote UNKNOWN - reg %d\n", creg);
+			break;
+		}
+	}
+    return 0;
+}
+
+//teawater add for arm2x86 2005.06.24-------------------------------------------
+static int
+sa_mmu_v2p_dbct (ARMul_State * state, ARMword virt_addr, ARMword * phys_addr)
+{
+	fault_t fault;
+	tlb_entry_t *tlb;
+
+	virt_addr = mmu_pid_va_map (virt_addr);
+	if (MMU_Enabled) {
+
+		/*align check */
+		if ((virt_addr & (WORD_SIZE - 1)) && MMU_Aligned) {
+			DEBUG_LOG(ARM11, "align\n");
+			return ALIGNMENT_FAULT;
+		}
+		else
+			virt_addr &= ~(WORD_SIZE - 1);
+
+		/*translate tlb */
+		fault = translate (state, virt_addr, I_TLB (), &tlb);
+		if (fault) {
+			DEBUG_LOG(ARM11, "translate\n");
+			return fault;
+		}
+
+		/*check access */
+		fault = check_access (state, virt_addr, tlb, 1);
+		if (fault) {
+			DEBUG_LOG(ARM11, "check_fault\n");
+			return fault;
+		}
+	}
+
+	if (MMU_Disabled) {
+		*phys_addr = virt_addr;
+	}
+	else {
+		*phys_addr = tlb_va_to_pa (tlb, virt_addr);
+	}
+
+	return (0);
+}
+
+//AJ2D--------------------------------------------------------------------------
+
+/*sa mmu_ops_t*/
+mmu_ops_t sa_mmu_ops = {
+	sa_mmu_init,
+	sa_mmu_exit,
+	sa_mmu_read_byte,
+	sa_mmu_write_byte,
+	sa_mmu_read_halfword,
+	sa_mmu_write_halfword,
+	sa_mmu_read_word,
+	sa_mmu_write_word,
+	sa_mmu_load_instr,
+	sa_mmu_mcr,
+	sa_mmu_mrc,
+//teawater add for arm2x86 2005.06.24-------------------------------------------
+	sa_mmu_v2p_dbct,
+//AJ2D--------------------------------------------------------------------------
+};
diff --git a/src/core/arm/interpreter/mmu/sa_mmu.h b/src/core/arm/interpreter/mmu/sa_mmu.h
new file mode 100644
index 00000000..64b1c547
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/sa_mmu.h
@@ -0,0 +1,58 @@
+/*
+    sa_mmu.h - StrongARM Memory Management Unit emulation.
+    ARMulator extensions for SkyEye.
+	<lyhost@263.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef _SA_MMU_H_
+#define _SA_MMU_H_
+
+
+/**
+ *  The interface of read data from bus
+ */
+int bus_read(short size, int addr, uint32_t * value);
+
+/**
+ * The interface of write data from bus
+ */
+int bus_write(short size, int addr, uint32_t value);
+
+
+typedef struct sa_mmu_s
+{
+	tlb_s i_tlb;
+	cache_s i_cache;
+
+	tlb_s d_tlb;
+	cache_s main_d_cache;
+	cache_s mini_d_cache;
+	rb_s rb_t;
+	wb_s wb_t;
+} sa_mmu_t;
+
+#define I_TLB() (&state->mmu.u.sa_mmu.i_tlb)
+#define I_CACHE() (&state->mmu.u.sa_mmu.i_cache)
+
+#define D_TLB() (&state->mmu.u.sa_mmu.d_tlb)
+#define MAIN_D_CACHE() (&state->mmu.u.sa_mmu.main_d_cache)
+#define MINI_D_CACHE() (&state->mmu.u.sa_mmu.mini_d_cache)
+#define WB() (&state->mmu.u.sa_mmu.wb_t)
+#define RB() (&state->mmu.u.sa_mmu.rb_t)
+
+extern mmu_ops_t sa_mmu_ops;
+#endif /*_SA_MMU_H_*/
diff --git a/src/core/arm/interpreter/mmu/tlb.cpp b/src/core/arm/interpreter/mmu/tlb.cpp
new file mode 100644
index 00000000..ca60ac1a
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/tlb.cpp
@@ -0,0 +1,307 @@
+#include <assert.h>
+
+#include "core/arm/interpreter/armdefs.h"
+
+ARMword tlb_masks[] = {
+	0x00000000,		/* TLB_INVALID */
+	0xFFFFF000,		/* TLB_SMALLPAGE */
+	0xFFFF0000,		/* TLB_LARGEPAGE */
+	0xFFF00000,		/* TLB_SECTION */
+	0xFFFFF000,		/*TLB_ESMALLPAGE, have TEX attirbute, only for XScale */
+	0xFFFFFC00		/* TLB_TINYPAGE */
+};
+
+/* This function encodes table 8-2 Interpreting AP bits,
+   returning non-zero if access is allowed. */
+static int
+check_perms (ARMul_State * state, int ap, int read)
+{
+	int s, r, user;
+
+	s = state->mmu.control & CONTROL_SYSTEM;
+	r = state->mmu.control & CONTROL_ROM;
+	//chy 2006-02-15 , should consider system mode, don't conside 26bit mode
+	user = (state->Mode == USER32MODE) || (state->Mode == USER26MODE) || (state->Mode == SYSTEM32MODE);
+
+	switch (ap) {
+	case 0:
+		return read && ((s && !user) || r);
+	case 1:
+		return !user;
+	case 2:
+		return read || !user;
+	case 3:
+		return 1;
+	}
+	return 0;
+}
+
+fault_t
+check_access (ARMul_State * state, ARMword virt_addr, tlb_entry_t * tlb,
+	      int read)
+{
+	int access;
+
+	state->mmu.last_domain = tlb->domain;
+	access = (state->mmu.domain_access_control >> (tlb->domain * 2)) & 3;
+	if ((access == 0) || (access == 2)) {
+		/* It's unclear from the documentation whether this
+		   should always raise a section domain fault, or if
+		   it should be a page domain fault in the case of an
+		   L1 that describes a page table.  In the ARM710T
+		   datasheets, "Figure 8-9: Sequence for checking faults"
+		   seems to indicate the former, while "Table 8-4: Priority
+		   encoding of fault status" gives a value for FS[3210] in
+		   the event of a domain fault for a page.  Hmm. */
+		return SECTION_DOMAIN_FAULT;
+	}
+	if (access == 1) {
+		/* client access - check perms */
+		int subpage, ap;
+
+		switch (tlb->mapping) {
+			/*ks 2004-05-09   
+			 *   only for XScale
+			 *   Extend Small Page(ESP) Format
+			 *   31-12 bits    the base addr of ESP
+			 *   11-10 bits    SBZ
+			 *   9-6   bits    TEX
+			 *   5-4   bits    AP
+			 *   3     bit     C
+			 *   2     bit     B
+			 *   1-0   bits    11
+			 * */
+		case TLB_ESMALLPAGE:	//xj
+			subpage = 0;
+			//printf("TLB_ESMALLPAGE virt_addr=0x%x  \n",virt_addr );
+			break;
+
+		case TLB_TINYPAGE:
+			subpage = 0;
+			//printf("TLB_TINYPAGE virt_addr=0x%x  \n",virt_addr );
+			break;
+
+		case TLB_SMALLPAGE:
+			subpage = (virt_addr >> 10) & 3;
+			break;
+		case TLB_LARGEPAGE:
+			subpage = (virt_addr >> 14) & 3;
+			break;
+		case TLB_SECTION:
+			subpage = 3;
+			break;
+		default:
+			assert (0);
+			subpage = 0;	/* cleans a warning */
+		}
+		ap = (tlb->perms >> (subpage * 2 + 4)) & 3;
+		if (!check_perms (state, ap, read)) {
+			if (tlb->mapping == TLB_SECTION) {
+				return SECTION_PERMISSION_FAULT;
+			}
+			else {
+				return SUBPAGE_PERMISSION_FAULT;
+			}
+		}
+	}
+	else {			/* access == 3 */
+		/* manager access - don't check perms */
+	}
+	return NO_FAULT;
+}
+
+fault_t
+translate (ARMul_State * state, ARMword virt_addr, tlb_s * tlb_t,
+	   tlb_entry_t ** tlb)
+{
+	*tlb = mmu_tlb_search (state, tlb_t, virt_addr);
+	if (!*tlb) {
+		/* walk the translation tables */
+		ARMword l1addr, l1desc;
+		tlb_entry_t entry;
+
+		l1addr = state->mmu.translation_table_base & 0xFFFFC000;
+		l1addr = (l1addr | (virt_addr >> 18)) & ~3;
+		//l1desc = mem_read_word (state, l1addr);
+		bus_read(32, l1addr, &l1desc);
+		switch (l1desc & 3) {
+		case 0:
+			/* 
+			 * according to Figure 3-9 Sequence for checking faults in arm manual,
+			 * section translation fault should be returned here. 
+			 */
+			{
+				return SECTION_TRANSLATION_FAULT;
+			}
+		case 3:
+			/* fine page table */
+			// dcl 2006-01-08
+			{
+				ARMword l2addr, l2desc;
+
+				l2addr = l1desc & 0xFFFFF000;
+				l2addr = (l2addr |
+					  ((virt_addr & 0x000FFC00) >> 8)) &
+					~3;
+				//l2desc = mem_read_word (state, l2addr);				 
+				bus_read(32, l2addr, &l2desc);
+
+				entry.virt_addr = virt_addr;
+				entry.phys_addr = l2desc;
+				entry.perms = l2desc & 0x00000FFC;
+				entry.domain = (l1desc >> 5) & 0x0000000F;
+				switch (l2desc & 3) {
+				case 0:
+					state->mmu.last_domain = entry.domain;
+					return PAGE_TRANSLATION_FAULT;
+				case 3:
+					entry.mapping = TLB_TINYPAGE;
+					break;
+				case 1:
+					// this is untested
+					entry.mapping = TLB_LARGEPAGE;
+					break;
+				case 2:
+					// this is untested
+					entry.mapping = TLB_SMALLPAGE;
+					break;
+				}
+			}
+			break;
+		case 1:
+			/* coarse page table */
+			{
+				ARMword l2addr, l2desc;
+
+				l2addr = l1desc & 0xFFFFFC00;
+				l2addr = (l2addr |
+					  ((virt_addr & 0x000FF000) >> 10)) &
+					~3;
+				//l2desc = mem_read_word (state, l2addr);
+				bus_read(32, l2addr, &l2desc);
+
+				entry.virt_addr = virt_addr;
+				entry.phys_addr = l2desc;
+				entry.perms = l2desc & 0x00000FFC;
+				entry.domain = (l1desc >> 5) & 0x0000000F;
+				//printf("SKYEYE:PAGE virt_addr = %x,l1desc=%x,phys_addr=%x\n",virt_addr,l1desc,entry.phys_addr);
+				//chy 2003-09-02 for xscale
+				switch (l2desc & 3) {
+				case 0:
+					state->mmu.last_domain = entry.domain;
+					return PAGE_TRANSLATION_FAULT;
+				case 3:
+					if (!state->is_XScale) {
+						state->mmu.last_domain =
+							entry.domain;
+						return PAGE_TRANSLATION_FAULT;
+					};
+					//ks 2004-05-09 xscale shold use Extend Small Page
+					//entry.mapping = TLB_SMALLPAGE;
+					entry.mapping = TLB_ESMALLPAGE;	//xj
+					break;
+				case 1:
+					entry.mapping = TLB_LARGEPAGE;
+					break;
+				case 2:
+					entry.mapping = TLB_SMALLPAGE;
+					break;
+				}
+			}
+			break;
+		case 2:
+			/* section */
+			//printf("SKYEYE:WARNING: not implement section mapping incompletely\n");
+			//printf("SKYEYE:SECTION virt_addr = %x,l1desc=%x\n",virt_addr,l1desc);
+			//return SECTION_DOMAIN_FAULT;
+			//#if 0
+			entry.virt_addr = virt_addr;
+			entry.phys_addr = l1desc;
+			entry.perms = l1desc & 0x00000C0C;
+			entry.domain = (l1desc >> 5) & 0x0000000F;
+			entry.mapping = TLB_SECTION;
+			break;
+			//#endif
+		}
+		entry.virt_addr &= tlb_masks[entry.mapping];
+		entry.phys_addr &= tlb_masks[entry.mapping];
+
+		/* place entry in the tlb */
+		*tlb = &tlb_t->entrys[tlb_t->cycle];
+		tlb_t->cycle = (tlb_t->cycle + 1) % tlb_t->num;
+		**tlb = entry;
+	}
+	state->mmu.last_domain = (*tlb)->domain;
+	return NO_FAULT;
+}
+
+int
+mmu_tlb_init (tlb_s * tlb_t, int num)
+{
+	tlb_entry_t *e;
+	int i;
+
+	e = (tlb_entry_t *) malloc (sizeof (*e) * num);
+	if (e == NULL) {
+		ERROR_LOG(ARM11, "malloc size %d\n", sizeof (*e) * num);
+		goto tlb_malloc_error;
+	}
+	tlb_t->entrys = e;
+	for (i = 0; i < num; i++, e++)
+		e->mapping = TLB_INVALID;
+	tlb_t->cycle = 0;
+	tlb_t->num = num;
+	return 0;
+
+      tlb_malloc_error:
+	return -1;
+}
+
+void
+mmu_tlb_exit (tlb_s * tlb_t)
+{
+	free (tlb_t->entrys);
+};
+
+void
+mmu_tlb_invalidate_all (ARMul_State * state, tlb_s * tlb_t)
+{
+	int entry;
+
+	for (entry = 0; entry < tlb_t->num; entry++) {
+		tlb_t->entrys[entry].mapping = TLB_INVALID;
+	}
+	tlb_t->cycle = 0;
+}
+
+void
+mmu_tlb_invalidate_entry (ARMul_State * state, tlb_s * tlb_t, ARMword addr)
+{
+	tlb_entry_t *tlb;
+
+	tlb = mmu_tlb_search (state, tlb_t, addr);
+	if (tlb) {
+		tlb->mapping = TLB_INVALID;
+	}
+}
+
+tlb_entry_t *
+mmu_tlb_search (ARMul_State * state, tlb_s * tlb_t, ARMword virt_addr)
+{
+	int entry;
+
+	for (entry = 0; entry < tlb_t->num; entry++) {
+		tlb_entry_t *tlb;
+		ARMword mask;
+
+		tlb = &(tlb_t->entrys[entry]);
+		if (tlb->mapping == TLB_INVALID) {
+			continue;
+		}
+		mask = tlb_masks[tlb->mapping];
+		if ((virt_addr & mask) == (tlb->virt_addr & mask)) {
+			return tlb;
+		}
+	}
+	return NULL;
+}
diff --git a/src/core/arm/interpreter/mmu/tlb.h b/src/core/arm/interpreter/mmu/tlb.h
index 938c0178..40856567 100644
--- a/src/core/arm/interpreter/mmu/tlb.h
+++ b/src/core/arm/interpreter/mmu/tlb.h
@@ -63,14 +63,7 @@ typedef struct tlb_s
 #define tlb_b_flag(tlb) \
     ((tlb)->perms & 0x4)
 
-#define  tlb_va_to_pa(tlb, va) \
-(\
- {\
-    ARMword mask = tlb_masks[tlb->mapping];      \
-    (tlb->phys_addr & mask) | (va & ~mask);\
- }\
-)
-
+#define  tlb_va_to_pa(tlb, va) ((tlb->phys_addr & tlb_masks[tlb->mapping]) | (va & ~tlb_masks[tlb->mapping]))
 fault_t
 check_access (ARMul_State * state, ARMword virt_addr, tlb_entry_t * tlb,
           int read);
diff --git a/src/core/arm/interpreter/mmu/wb.cpp b/src/core/arm/interpreter/mmu/wb.cpp
new file mode 100644
index 00000000..82c0cec0
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/wb.cpp
@@ -0,0 +1,149 @@
+#include "core/arm/interpreter/armdefs.h"
+
+/* wb_init
+ * @wb_t	:wb_t to init
+ * @num		:num of entrys
+ * @nb		:num of byte of each entry
+ *
+ * $	-1:error
+ * 		 0:ok
+ * */
+int
+mmu_wb_init (wb_s * wb_t, int num, int nb)
+{
+	int i;
+	wb_entry_t *entrys, *wb;
+
+	entrys = (wb_entry_t *) malloc (sizeof (*entrys) * num);
+	if (entrys == NULL) {
+		ERROR_LOG(ARM11, "malloc size %d\n", sizeof (*entrys) * num);
+		goto entrys_malloc_error;
+	}
+
+	for (wb = entrys, i = 0; i < num; i++, wb++) {
+		/*chy 2004-06-06, fix bug found by wenye@cs.ucsb.edu */
+		//wb->data = (ARMword *)malloc(sizeof(ARMword) * nb);
+		wb->data = (ARMbyte *) malloc (nb);
+		if (wb->data == NULL) {
+			ERROR_LOG(ARM11, "malloc size of %d\n", nb);
+			goto data_malloc_error;
+		}
+
+	};
+
+	wb_t->first = wb_t->last = wb_t->used = 0;
+	wb_t->num = num;
+	wb_t->nb = nb;
+	wb_t->entrys = entrys;
+	return 0;
+
+      data_malloc_error:
+	while (--i >= 0)
+		free (entrys[i].data);
+	free (entrys);
+      entrys_malloc_error:
+	return -1;
+};
+
+/* wb_exit
+ * @wb_t :wb_t to exit
+ * */
+void
+mmu_wb_exit (wb_s * wb_t)
+{
+	int i;
+	wb_entry_t *wb;
+
+	wb = wb_t->entrys;
+	for (i = 0; i < wb_t->num; i++, wb++) {
+		free (wb->data);
+	}
+	free (wb_t->entrys);
+};
+
+/* wb_write_words :put words in Write Buffer
+ * @state:	ARMul_State
+ * @wb_t:	write buffer
+ * @pa:		physical address
+ * @data:	data ptr
+ * @n		number of word to write
+ *
+ * Note: write buffer merge is not implemented, can be done late
+ * */
+void
+mmu_wb_write_bytes (ARMul_State * state, wb_s * wb_t, ARMword pa,
+		    ARMbyte * data, int n)
+{
+	int i;
+	wb_entry_t *wb;
+
+	while (n) {
+		if (wb_t->num == wb_t->used) {
+			/*clean the last wb entry */
+			ARMword t;
+
+			wb = &wb_t->entrys[wb_t->last];
+			t = wb->pa;
+			for (i = 0; i < wb->nb; i++) {
+				//mem_write_byte (state, t, wb->data[i]);
+				bus_write(8, t, wb->data[i]);
+				//t += WORD_SIZE;
+				t++;
+			}
+			wb_t->last++;
+			if (wb_t->last == wb_t->num)
+				wb_t->last = 0;
+			wb_t->used--;
+		}
+
+		wb = &wb_t->entrys[wb_t->first];
+		i = (n < wb_t->nb) ? n : wb_t->nb;
+
+		wb->pa = pa;
+		//pa += i << WORD_SHT;
+		pa += i;
+
+		wb->nb = i;
+		//memcpy(wb->data, data, i << WORD_SHT);
+		memcpy (wb->data, data, i);
+		data += i;
+		n -= i;
+		wb_t->first++;
+		if (wb_t->first == wb_t->num)
+			wb_t->first = 0;
+		wb_t->used++;
+	};
+//teawater add for set_dirty fflash cache function 2005.07.18-------------------
+#ifdef DBCT
+	if (!skyeye_config.no_dbct) {
+		tb_setdirty (state, pa, NULL);
+	}
+#endif
+//AJ2D--------------------------------------------------------------------------
+}
+
+/* wb_drain_all
+ * @wb_t wb_t to drain
+ * */
+void
+mmu_wb_drain_all (ARMul_State * state, wb_s * wb_t)
+{
+	ARMword pa;
+	wb_entry_t *wb;
+	int i;
+
+	while (wb_t->used) {
+		wb = &wb_t->entrys[wb_t->last];
+		pa = wb->pa;
+		for (i = 0; i < wb->nb; i++) {
+			//mem_write_byte (state, pa, wb->data[i]);
+			bus_write(8, pa, wb->data[i]);
+			//pa += WORD_SIZE;
+			pa++;
+		}
+		wb_t->last++;
+		if (wb_t->last == wb_t->num)
+			wb_t->last = 0;
+		wb_t->used--;
+	};
+}
diff --git a/src/core/arm/interpreter/mmu/xscale_copro.cpp b/src/core/arm/interpreter/mmu/xscale_copro.cpp
new file mode 100644
index 00000000..99cd7773
--- /dev/null
+++ b/src/core/arm/interpreter/mmu/xscale_copro.cpp
@@ -0,0 +1,1388 @@
+/*
+    armmmu.c - Memory Management Unit emulation.
+    ARMulator extensions for the ARM7100 family.
+    Copyright (C) 1999  Ben Williamson
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <assert.h>
+#include <string.h>
+
+#include "core/arm/interpreter/armdefs.h"
+#include "core/arm/interpreter/armemu.h"
+
+/*#include "pxa.h" */
+
+/* chy 2005-09-19 */
+
+/* extern pxa270_io_t pxa270_io; */
+/* chy 2005-09-19 -----end */
+
+typedef struct xscale_mmu_desc_s
+{
+	int i_tlb;
+	cache_desc_t i_cache;
+
+	int d_tlb;
+	cache_desc_t main_d_cache;
+	cache_desc_t mini_d_cache;
+	//int   rb;  xscale has no read buffer
+	wb_desc_t wb;
+} xscale_mmu_desc_t;
+
+static xscale_mmu_desc_t pxa_mmu_desc = {
+	32,
+	{32, 32, 32, CACHE_WRITE_BACK},
+
+	32,
+	{32, 32, 32, CACHE_WRITE_BACK},
+	{32, 2, 8, CACHE_WRITE_BACK},
+	{8, 16},		//for byte size, 
+};
+
+//chy 2005-09-19 for cp6
+#define CR0_ICIP   0
+#define CR1_ICMR   1
+//chy 2005-09-19 ---end
+//----------- for cp14-----------------
+#define  CCLKCFG   6
+#define  PWRMODE   7
+typedef struct xscale_cp14_reg_s
+{
+	unsigned cclkcfg;	//reg6
+	unsigned pwrmode;	//reg7
+} xscale_cp14_reg_s;
+
+xscale_cp14_reg_s pxa_cp14_regs;
+
+//--------------------------------------
+
+static fault_t xscale_mmu_write (ARMul_State * state, ARMword va,
+				 ARMword data, ARMword datatype);
+static fault_t xscale_mmu_read (ARMul_State * state, ARMword va,
+				ARMword * data, ARMword datatype);
+
+ARMword xscale_mmu_mrc (ARMul_State * state, ARMword instr, ARMword * value);
+ARMword xscale_mmu_mcr (ARMul_State * state, ARMword instr, ARMword value);
+
+
+/* jeff add 2010.9.26 for pxa270 cp6*/
+#define PXA270_ICMR 0x40D00004
+#define PXA270_ICPR 0x40D00010
+#define PXA270_ICLR 0x40D00008
+//chy 2005-09-19 for xscale pxa27x cp6
+//unsigned
+//xscale_cp6_mrc (ARMul_State * state, unsigned type, ARMword instr,
+//		ARMword * data)
+//{
+//	unsigned opcode_2 = BITS (5, 7);
+//	unsigned CRm = BITS (0, 3);
+//	unsigned reg = BITS (16, 19);
+//	unsigned result;
+//
+//	//printf("SKYEYE: xscale_cp6_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,state->Reg[15], instr);
+//
+//	switch (reg) {
+//	case CR0_ICIP: {		// cp 6 reg 0
+//		//printf("cp6_mrc cr0 ICIP              \n");
+//		/* *data = (pxa270_io.icmr & pxa270_io.icpr) & ~pxa270_io.iclr; */
+//		/* use bus_read get the pxa270 machine registers  2010.9.26 jeff*/
+//		int icmr, icpr, iclr;
+//		bus_read(32, PXA270_ICMR, &icmr);
+//		bus_read(32, PXA270_ICPR, &icpr);
+//		bus_read(32, PXA270_ICLR, &iclr);
+//		*data = (icmr & icpr)  & ~iclr;
+//		}
+//		break;
+//	case CR1_ICMR: {	// cp 6 reg 1
+//		//printf("cp6_mrc cr1 ICMR\n");
+//		/* *data = pxa270_io.icmr; */
+//		int icmr;
+//		/* use bus_read get the pxa270 machine registers  2010.9.26 jeff*/
+//		bus_read(32, PXA270_ICMR, &icmr);
+//		*data = icmr;
+//		}
+//		break;
+//	default:
+//		*data = 0;
+//		printf ("SKYEYE:cp6_mrc unknown cp6 regs!!!!!!\n");
+//		printf ("SKYEYE: xscale_cp6_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n", opcode_2, CRm, reg, state->Reg[15], instr);
+//		break;
+//	}
+//	return 0;
+//}
+//
+////chy 2005-09-19 end
+////xscale cp13 ----------------------------------------------------
+//unsigned
+//xscale_cp13_init (ARMul_State * state)
+//{
+//	//printf("SKYEYE: xscale_cp13_init: begin\n");
+//	return 0;
+//}
+//
+//unsigned
+//xscale_cp13_exit (ARMul_State * state)
+//{
+//	//printf("SKYEYE: xscale_cp13_exit: begin\n");
+//	return 0;
+//}
+//
+//unsigned
+//xscale_cp13_ldc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword data)
+//{
+//	printf ("SKYEYE: xscale_cp13_ldc: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp13_stc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword * data)
+//{
+//	printf ("SKYEYE: xscale_cp13_stc: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp13_mrc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword * data)
+//{
+//	printf ("SKYEYE: xscale_cp13_mrc: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp13_mcr (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword data)
+//{
+//	printf ("SKYEYE: xscale_cp13_mcr: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp13_cdp (ARMul_State * state, unsigned type, ARMword instr)
+//{
+//	printf ("SKYEYE: xscale_cp13_cdp: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp13_read_reg (ARMul_State * state, unsigned reg, ARMword * data)
+//{
+//	printf ("SKYEYE: xscale_cp13_read_reg: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	return 0;
+//	//exit(-1);
+//}
+//
+//unsigned
+//xscale_cp13_write_reg (ARMul_State * state, unsigned reg, ARMword data)
+//{
+//	printf ("SKYEYE: xscale_cp13_write_reg: ERROR isn't existed,");
+//	SKYEYE_OUTREGS (stderr);
+//	fprintf (stderr, "\n");
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+////------------------------------------------------------------------
+////xscale cp14 ----------------------------------------------------
+//unsigned
+//xscale_cp14_init (ARMul_State * state)
+//{
+//	//printf("SKYEYE: xscale_cp14_init: begin\n");
+//	pxa_cp14_regs.cclkcfg = 0;
+//	pxa_cp14_regs.pwrmode = 0;
+//	return 0;
+//}
+//
+//unsigned
+//xscale_cp14_exit (ARMul_State * state)
+//{
+//	//printf("SKYEYE: xscale_cp14_exit: begin\n");
+//	return 0;
+//}
+//
+//unsigned
+//xscale_cp14_ldc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword data)
+//{
+//	printf ("SKYEYE: xscale_cp14_ldc: ERROR isn't existed, reg15 0x%x\n",
+//		state->Reg[15]);
+//	SKYEYE_OUTREGS (stderr);
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp14_stc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword * data)
+//{
+//	printf ("SKYEYE: xscale_cp14_stc: ERROR isn't existed, reg15 0x%x\n",
+//		state->Reg[15]);
+//	SKYEYE_OUTREGS (stderr);
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//
+//unsigned
+//xscale_cp14_mrc (ARMul_State * state, unsigned type, ARMword instr,
+//		 ARMword * data)
+//{
+//	unsigned opcode_2 = BITS (5, 7);
+//	unsigned CRm = BITS (0, 3);
+//	unsigned reg = BITS (16, 19);
+//	unsigned result;
+//
+//	//printf("SKYEYE: xscale_cp14_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\
+//	state->Reg[15], instr);
+//
+//	switch (reg) {
+//	case CCLKCFG:		// cp 14 reg 6
+//		//printf("cp14_mrc cclkcfg              \n");
+//		*data = pxa_cp14_regs.cclkcfg;
+//		break;
+//	case PWRMODE:		// cp 14 reg 7
+//		//printf("cp14_mrc pwrmode              \n");
+//		*data = pxa_cp14_regs.pwrmode;
+//		break;
+//	default:
+//		*data = 0;
+//		printf ("SKYEYE:cp14_mrc unknown cp14 regs!!!!!!\n");
+//		break;
+//	}
+//	return 0;
+//}
+//unsigned xscale_cp14_mcr (ARMul_State * state, unsigned type, ARMword instr,
+//			  ARMword data)
+//{
+//	unsigned opcode_2 = BITS (5, 7);
+//	unsigned CRm = BITS (0, 3);
+//	unsigned reg = BITS (16, 19);
+//	unsigned result;
+//
+//	//printf("SKYEYE: xscale_cp14_mcr:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\
+//	  state->Reg[15], instr);
+//
+//	switch (reg) {
+//	case CCLKCFG:		// cp 14 reg 6
+//		//printf("cp14_mcr cclkcfg              \n");
+//		pxa_cp14_regs.cclkcfg = data & 0xf;
+//		break;
+//		case PWRMODE:	// cp 14 reg 7
+//			//printf("cp14_mcr pwrmode              \n");
+//		pxa_cp14_regs.pwrmode = data & 0x3;
+//		break;
+//		default:printf ("SKYEYE: cp14_mcr unknown cp14 regs!!!!!!\n");
+//		break;
+//	}
+//	return 0;
+//}
+//unsigned xscale_cp14_cdp (ARMul_State * state, unsigned type, ARMword instr)
+//{
+//	printf ("SKYEYE: xscale_cp14_cdp: ERROR isn't existed, reg15 0x%x\n",
+//		state->Reg[15]);
+//	SKYEYE_OUTREGS (stderr);
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//unsigned xscale_cp14_read_reg (ARMul_State * state, unsigned reg,
+//			       ARMword * data)
+//{
+//	printf ("SKYEYE: xscale_cp14_read_reg: ERROR isn't existed, reg15 0x%x\n", state->Reg[15]);
+//	SKYEYE_OUTREGS (stderr);
+//	// skyeye_exit (-1);
+//	return 0; //No matter return value, only for compiler.
+//}
+//unsigned xscale_cp14_write_reg (ARMul_State * state, unsigned reg,
+//				ARMword data)
+//{
+//	printf ("SKYEYE: xscale_cp14_write_reg: ERROR isn't existed, reg15 0x%x\n", state->Reg[15]);
+//	SKYEYE_OUTREGS (stderr);
+//	// skyeye_exit (-1);
+//
+//	return 0; //No matter return value, only for compiler.
+//}
+
+//------------------------------------------------------------------
+//cp15 -------------------------------------
+unsigned xscale_cp15_ldc (ARMul_State * state, unsigned type, ARMword instr,
+			  ARMword data)
+{
+	printf ("SKYEYE: xscale_cp15_ldc: ERROR isn't existed\n");
+	SKYEYE_OUTREGS (stderr);
+	// skyeye_exit (-1);
+
+	return 0; //No matter return value, only for compiler.
+}
+unsigned xscale_cp15_stc (ARMul_State * state, unsigned type, ARMword instr,
+			  ARMword * data)
+{
+	printf ("SKYEYE: xscale_cp15_stc: ERROR isn't existed\n");
+	SKYEYE_OUTREGS (stderr);
+	// skyeye_exit (-1);
+
+	return 0; //No matter return value, only for compiler.
+}
+unsigned xscale_cp15_cdp (ARMul_State * state, unsigned type, ARMword instr)
+{
+	printf ("SKYEYE: xscale_cp15_cdp: ERROR isn't existed\n");
+	SKYEYE_OUTREGS (stderr);
+	// skyeye_exit (-1);
+
+	return 0; //No matter return value, only for compiler.
+}
+unsigned xscale_cp15_read_reg (ARMul_State * state, unsigned reg,
+			       ARMword * data)
+{
+//chy 2003-09-03: for xsacle_cp15_cp_access_allowed
+	if (reg == 15) {
+		*data = state->mmu.copro_access;
+		//printf("SKYEYE: xscale_cp15_read_reg: reg 0x%x,data %x\n",reg,*data);
+		return 0;
+	}
+	printf ("SKYEYE: xscale_cp15_read_reg: reg 0x%x, ERROR isn't existed\n", reg);
+	SKYEYE_OUTREGS (stderr);
+	// skyeye_exit (-1);
+
+	return 0; //No matter return value, only for compiler.
+}
+
+//chy 2003-09-03 used by macro CP_ACCESS_ALLOWED in armemu.h
+unsigned xscale_cp15_cp_access_allowed (ARMul_State * state, unsigned reg,
+					unsigned cpnum)
+{
+	unsigned data;
+
+	xscale_cp15_read_reg (state, reg, &data);
+	//printf("SKYEYE: cp15_cp_access_allowed data %x, cpnum %x, result %x\n", data, cpnum, (data & 1<<cpnum));
+	if (data & 1 << cpnum)
+		return 1;
+	else
+		return 0;
+}
+
+unsigned xscale_cp15_write_reg (ARMul_State * state, unsigned reg,
+				ARMword value)
+{
+	switch (reg) {
+	case MMU_FAULT_STATUS:
+		//printf("SKYEYE:cp15_write_reg  wrote FS        val 0x%x \n",value);
+		state->mmu.fault_status = value & 0x6FF;
+		break;
+	case MMU_FAULT_ADDRESS:
+		//printf("SKYEYE:cp15_write_reg wrote FA         val 0x%x \n",value);
+		state->mmu.fault_address = value;
+		break;
+	default:
+		printf ("SKYEYE: xscale_cp15_write_reg: reg 0x%x R15 %x ERROR isn't existed\n", reg, state->Reg[15]);
+		SKYEYE_OUTREGS (stderr);
+		// skyeye_exit (-1);
+	}
+	return 0;
+}
+
+int xscale_cp15_init (ARMul_State * state)
+{
+	xscale_mmu_desc_t *desc;
+	cache_desc_t *c_desc;
+
+	state->mmu.control = 0;
+	state->mmu.translation_table_base = 0xDEADC0DE;
+	state->mmu.domain_access_control = 0xDEADC0DE;
+	state->mmu.fault_status = 0;
+	state->mmu.fault_address = 0;
+	state->mmu.process_id = 0;
+	state->mmu.cache_type = 0xB1AA1AA;	//0000 1011 0001 1010 1010 0001 1010 1010
+	state->mmu.aux_control = 0;
+
+	desc = &pxa_mmu_desc;
+
+	if (mmu_tlb_init (I_TLB (), desc->i_tlb)) {
+		ERROR_LOG(ARM11, "i_tlb init %d\n", -1);
+		goto i_tlb_init_error;
+	}
+
+	c_desc = &desc->i_cache;
+	if (mmu_cache_init (I_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "i_cache init %d\n", -1);
+		goto i_cache_init_error;
+	}
+
+	if (mmu_tlb_init (D_TLB (), desc->d_tlb)) {
+		ERROR_LOG(ARM11, "d_tlb init %d\n", -1);
+		goto d_tlb_init_error;
+	}
+
+	c_desc = &desc->main_d_cache;
+	if (mmu_cache_init (MAIN_D_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "main_d_cache init %d\n", -1);
+		goto main_d_cache_init_error;
+	}
+
+	c_desc = &desc->mini_d_cache;
+	if (mmu_cache_init (MINI_D_CACHE (), c_desc->width, c_desc->way,
+			    c_desc->set, c_desc->w_mode)) {
+		ERROR_LOG(ARM11, "mini_d_cache init %d\n", -1);
+		goto mini_d_cache_init_error;
+	}
+
+	if (mmu_wb_init (WB (), desc->wb.num, desc->wb.nb)) {
+		ERROR_LOG(ARM11, "wb init %d\n", -1);
+		goto wb_init_error;
+	}
+#if 0
+	if (mmu_rb_init (RB (), desc->rb)) {
+		ERROR_LOG(ARM11, "rb init %d\n", -1);
+		goto rb_init_error;
+	}
+#endif
+
+	return 0;
+#if 0
+      rb_init_error:
+	mmu_wb_exit (WB ());
+#endif
+      wb_init_error:
+	mmu_cache_exit (MINI_D_CACHE ());
+      mini_d_cache_init_error:
+	mmu_cache_exit (MAIN_D_CACHE ());
+      main_d_cache_init_error:
+	mmu_tlb_exit (D_TLB ());
+      d_tlb_init_error:
+	mmu_cache_exit (I_CACHE ());
+      i_cache_init_error:
+	mmu_tlb_exit (I_TLB ());
+      i_tlb_init_error:
+	return -1;
+}
+
+void xscale_cp15_exit (ARMul_State * state)
+{
+	//mmu_rb_exit(RB());
+	mmu_wb_exit (WB ());
+	mmu_cache_exit (MINI_D_CACHE ());
+	mmu_cache_exit (MAIN_D_CACHE ());
+	mmu_tlb_exit (D_TLB ());
+	mmu_cache_exit (I_CACHE ());
+	mmu_tlb_exit (I_TLB ());
+};
+
+
+static fault_t
+	xscale_mmu_load_instr (ARMul_State * state, ARMword va,
+			       ARMword * instr)
+{
+	fault_t fault;
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	int c;			//cache bit
+	ARMword pa;		//physical addr
+
+	static int debug_count = 0;	//used for debug
+
+	DEBUG_LOG(ARM11, "va = %x\n", va);
+
+	va = mmu_pid_va_map (va);
+	if (MMU_Enabled) {
+		/*align check */
+		if ((va & (INSN_SIZE - 1)) && MMU_Aligned) {
+			DEBUG_LOG(ARM11, "align\n");
+			return ALIGNMENT_FAULT;
+		}
+		else
+			va &= ~(INSN_SIZE - 1);
+
+		/*translate tlb */
+		fault = translate (state, va, I_TLB (), &tlb);
+		if (fault) {
+			DEBUG_LOG(ARM11, "translate\n");
+			return fault;
+		}
+
+		/*check access */
+		fault = check_access (state, va, tlb, 1);
+		if (fault) {
+			DEBUG_LOG(ARM11, "check_fault\n");
+			return fault;
+		}
+	}
+	//chy 2003-09-02 for test, don't use cache  ?????       
+#if 0
+	/*search cache no matter MMU enabled/disabled */
+	cache = mmu_cache_search (state, I_CACHE (), va);
+	if (cache) {
+		*instr = cache->data[va_cache_index (va, I_CACHE ())];
+		return 0;
+	}
+#endif
+	/*if MMU disabled or C flag is set alloc cache */
+	if (MMU_Disabled) {
+		c = 1;
+		pa = va;
+	}
+	else {
+		c = tlb_c_flag (tlb);
+		pa = tlb_va_to_pa (tlb, va);
+	}
+
+	//chy 2003-09-03 only read mem, don't use cache now,will change later ????
+	//*instr = mem_read_word (state, pa);
+	bus_read(32, pa, instr);
+#if 0
+//-----------------------------------------------------------
+	//chy 2003-09-02 for test????
+	if (pa >= 0xa01c8000 && pa <= 0xa01c8020) {
+		printf ("SKYEYE:load_instr: pa %x, va %x,instr %x, R15 %x\n",
+			pa, va, *instr, state->Reg[15]);
+	}
+
+//----------------------------------------------------------------------        
+#endif
+	return NO_FAULT;
+
+	if (c) {
+		int index;
+
+		debug_count++;
+		cache = mmu_cache_alloc (state, I_CACHE (), va, pa);
+		index = va_cache_index (va, I_CACHE ());
+		*instr = cache->data[va_cache_index (va, I_CACHE ())];
+	}
+	else
+		//*instr = mem_read_word (state, pa);
+		bus_read(32, pa, instr);
+
+	return NO_FAULT;
+};
+
+
+
+static fault_t
+	xscale_mmu_read_byte (ARMul_State * state, ARMword virt_addr,
+			      ARMword * data)
+{
+	//ARMword temp,offset;
+	fault_t fault;
+	fault = xscale_mmu_read (state, virt_addr, data, ARM_BYTE_TYPE);
+	return fault;
+}
+
+static fault_t
+	xscale_mmu_read_halfword (ARMul_State * state, ARMword virt_addr,
+				  ARMword * data)
+{
+	//ARMword temp,offset;
+	fault_t fault;
+	fault = xscale_mmu_read (state, virt_addr, data, ARM_HALFWORD_TYPE);
+	return fault;
+}
+
+static fault_t
+	xscale_mmu_read_word (ARMul_State * state, ARMword virt_addr,
+			      ARMword * data)
+{
+	return xscale_mmu_read (state, virt_addr, data, ARM_WORD_TYPE);
+}
+
+
+
+
+static fault_t
+	xscale_mmu_read (ARMul_State * state, ARMword va, ARMword * data,
+			 ARMword datatype)
+{
+	fault_t fault;
+//      rb_entry_t *rb;
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	ARMword pa, real_va, temp, offset;
+	//chy 2003-09-02 for test ????
+	static unsigned chyst1 = 0, chyst2 = 0;
+
+	DEBUG_LOG(ARM11, "va = %x\n", va);
+
+	va = mmu_pid_va_map (va);
+	real_va = va;
+	/*if MMU disabled, memory_read */
+	if (MMU_Disabled) {
+		//*data = mem_read_word(state, va);
+		if (datatype == ARM_BYTE_TYPE)
+			//*data = mem_read_byte (state, va);
+			bus_read(8, va, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//*data = mem_read_halfword (state, va);
+			bus_read(16, va, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//*data = mem_read_word (state, va);
+			bus_read(32, va, data);
+		else {
+			printf ("SKYEYE:1 xscale_mmu_read error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+
+		return NO_FAULT;
+	}
+
+	/*align check */
+	if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) ||
+	    ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) {
+		DEBUG_LOG(ARM11, "align\n");
+		return ALIGNMENT_FAULT;
+	}			// else
+
+	va &= ~(WORD_SIZE - 1);
+
+	/*translate va to tlb */
+	fault = translate (state, va, D_TLB (), &tlb);
+	if (fault) {
+		DEBUG_LOG(ARM11, "translate\n");
+		return fault;
+	}
+	/*check access permission */
+	fault = check_access (state, va, tlb, 1);
+	if (fault)
+		return fault;
+
+#if 0
+//------------------------------------------------
+//chy 2003-09-02 for test only ,should commit ????
+	if (datatype == ARM_WORD_TYPE) {
+		if (real_va >= 0xffff0000 && real_va <= 0xffff0020) {
+			pa = tlb_va_to_pa (tlb, va);
+			*data = mem_read_word (state, pa);
+			chyst1++;
+			printf ("**SKYEYE:mmu_read word %d: pa %x, va %x, data %x, R15 %x\n", chyst1, pa, real_va, *data, state->Reg[15]);
+			/*
+			   cache==mmu_cache_search(state,MAIN_D_CACHE(),va);
+			   if(cache){
+			   *data = cache->data[va_cache_index(va, MAIN_D_CACHE())];
+			   printf("cached data %x\n",*data);
+			   }else   printf("no cached data\n");
+			 */
+		}
+	}
+//-------------------------------------------------
+#endif
+#if 0
+	/*search in read buffer */
+	rb = mmu_rb_search (RB (), va);
+	if (rb) {
+		if (rb->fault)
+			return rb->fault;
+		*data = rb->data[(va & (rb_masks[rb->type] - 1)) >> WORD_SHT];
+		goto datatrans;
+		//return 0;
+	};
+#endif
+
+	/*2004-07-19 chy: add support of xscale MMU CacheDisabled option */
+	if (MMU_CacheDisabled) {
+		//if(1){ can be used to test cache error
+		/*get phy_addr */
+		pa = tlb_va_to_pa (tlb, real_va);
+		if (datatype == ARM_BYTE_TYPE)
+			//*data = mem_read_byte (state, pa);
+			bus_read(8, pa, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//*data = mem_read_halfword (state, pa);
+			bus_read(16, pa, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//*data = mem_read_word (state, pa);
+			bus_read(32, pa, data);
+		else {
+			printf ("SKYEYE:MMU_CacheDisabled xscale_mmu_read error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+		return NO_FAULT;
+	}
+
+
+	/*search main cache */
+	cache = mmu_cache_search (state, MAIN_D_CACHE (), va);
+	if (cache) {
+		*data = cache->data[va_cache_index (va, MAIN_D_CACHE ())];
+#if 0
+//------------------------------------------------------------------------
+//chy 2003-09-02 for test only ,should commit ????
+		if (real_va >= 0xffff0000 && real_va <= 0xffff0020) {
+			pa = tlb_va_to_pa (tlb, va);
+			chyst2++;
+			printf ("**SKYEYE:mmu_read wordk:cache %d: pa %x, va %x, data %x, R15 %x\n", chyst2, pa, real_va, *data, state->Reg[15]);
+		}
+//-------------------------------------------------------------------
+#endif
+		goto datatrans;
+		//return 0;
+	}
+	//chy 2003-08-24, now maybe we don't need minidcache  ????
+#if 0
+	/*search mini cache */
+	cache = mmu_cache_search (state, MINI_D_CACHE (), va);
+	if (cache) {
+		*data = cache->data[va_cache_index (va, MINI_D_CACHE ())];
+		goto datatrans;
+		//return 0;
+	}
+#endif
+	/*get phy_addr */
+	pa = tlb_va_to_pa (tlb, va);
+	//chy 2003-08-24 , in xscale it means what ?????
+#if 0
+	if ((pa >= 0xe0000000) && (pa < 0xe8000000)) {
+
+		if (tlb_c_flag (tlb)) {
+			if (tlb_b_flag (tlb)) {
+				mmu_cache_soft_flush (state, MAIN_D_CACHE (),
+						      pa);
+			}
+			else {
+				mmu_cache_soft_flush (state, MINI_D_CACHE (),
+						      pa);
+			}
+		}
+		return 0;
+	}
+#endif
+	//chy 2003-08-24, check phy addr
+	//ywc 2004-11-30, inactive this check because of using 0xc0000000 as the framebuffer start address
+	/*
+	   if(pa >= 0xb0000000){
+	   printf("SKYEYE:xscale_mmu_read: phy address 0x%x error,reg[15] 0x%x\n",pa,state->Reg[15]);
+	   return 0;
+	   }
+	 */
+
+	//chy 2003-08-24, now maybe we don't need wb  ????
+#if 0
+	/*if Buffer, drain Write Buffer first */
+	if (tlb_b_flag (tlb))
+		mmu_wb_drain_all (state, WB ());
+#endif
+	/*alloc cache or mem_read */
+	if (tlb_c_flag (tlb) && MMU_DCacheEnabled) {
+		cache_s *cache_t;
+
+		if (tlb_b_flag (tlb))
+			cache_t = MAIN_D_CACHE ();
+		else
+			cache_t = MINI_D_CACHE ();
+		cache = mmu_cache_alloc (state, cache_t, va, pa);
+		*data = cache->data[va_cache_index (va, cache_t)];
+	}
+	else {
+		//*data = mem_read_word(state, pa);
+		if (datatype == ARM_BYTE_TYPE)
+			//*data = mem_read_byte (state, pa | (real_va & 3));
+			bus_read(8, pa | (real_va & 3), data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//*data = mem_read_halfword (state, pa | (real_va & 2));
+			bus_read(16, pa | (real_va & 2), data);
+		else if (datatype == ARM_WORD_TYPE)
+			//*data = mem_read_word (state, pa);
+			bus_read(32, pa, data);
+		else {
+			printf ("SKYEYE:2 xscale_mmu_read error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+		return NO_FAULT;
+	}
+
+
+      datatrans:
+	if (datatype == ARM_HALFWORD_TYPE) {
+		temp = *data;
+		offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3;	/* bit offset into the word */
+		*data = (temp >> offset) & 0xffff;
+	}
+	else if (datatype == ARM_BYTE_TYPE) {
+		temp = *data;
+		offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3;	/* bit offset into the word */
+		*data = (temp >> offset & 0xffL);
+	}
+      end:
+	return NO_FAULT;
+}
+
+
+static fault_t
+	xscale_mmu_write_byte (ARMul_State * state, ARMword virt_addr,
+			       ARMword data)
+{
+	return xscale_mmu_write (state, virt_addr, data, ARM_BYTE_TYPE);
+}
+
+static fault_t
+	xscale_mmu_write_halfword (ARMul_State * state, ARMword virt_addr,
+				   ARMword data)
+{
+	return xscale_mmu_write (state, virt_addr, data, ARM_HALFWORD_TYPE);
+}
+
+static fault_t
+	xscale_mmu_write_word (ARMul_State * state, ARMword virt_addr,
+			       ARMword data)
+{
+	return xscale_mmu_write (state, virt_addr, data, ARM_WORD_TYPE);
+}
+
+
+
+static fault_t
+	xscale_mmu_write (ARMul_State * state, ARMword va, ARMword data,
+			  ARMword datatype)
+{
+	tlb_entry_t *tlb;
+	cache_line_t *cache;
+	cache_s *cache_t;
+	int b;
+	ARMword pa, real_va, temp, offset;
+	fault_t fault;
+
+	ARMword index;
+//chy 2003-09-02 for test ????
+//      static unsigned chyst1=0,chyst2=0;
+
+	DEBUG_LOG(ARM11, "va = %x, val = %x\n", va, data);
+	va = mmu_pid_va_map (va);
+	real_va = va;
+
+	if (MMU_Disabled) {
+		//mem_write_word(state, va, data);
+		if (datatype == ARM_BYTE_TYPE)
+			//mem_write_byte (state, va, data);
+			bus_write(8, va, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//mem_write_halfword (state, va, data);
+			bus_write(16, va, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//mem_write_word (state, va, data);
+			bus_write(32, va, data);
+		else {
+			printf ("SKYEYE:1 xscale_mmu_write error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+
+		return NO_FAULT;
+	}
+	/*align check */
+	if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) ||
+	    ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) {
+		DEBUG_LOG(ARM11, "align\n");
+		return ALIGNMENT_FAULT;
+	}			//else
+	va &= ~(WORD_SIZE - 1);
+	/*tlb translate */
+	fault = translate (state, va, D_TLB (), &tlb);
+	if (fault) {
+		DEBUG_LOG(ARM11, "translate\n");
+		return fault;
+	}
+	/*tlb check access */
+	fault = check_access (state, va, tlb, 0);
+	if (fault) {
+		DEBUG_LOG(ARM11, "check_access\n");
+		return fault;
+	}
+
+	/*2004-07-19 chy: add support for xscale MMU_CacheDisabled */
+	if (MMU_CacheDisabled) {
+		//if(1){ can be used to test the cache error
+		/*get phy_addr */
+		pa = tlb_va_to_pa (tlb, real_va);
+		if (datatype == ARM_BYTE_TYPE)
+			//mem_write_byte (state, pa, data);
+			bus_write(8, pa, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			//mem_write_halfword (state, pa, data);
+			bus_write(16, pa, data);
+		else if (datatype == ARM_WORD_TYPE)
+			//mem_write_word (state, pa, data);
+			bus_write(32, pa , data);
+		else {
+			printf ("SKYEYE:MMU_CacheDisabled xscale_mmu_write error: unknown data type %d\n", datatype);
+			// skyeye_exit (-1);
+		}
+
+		return NO_FAULT;
+	}
+
+	/*search main cache */
+	b = tlb_b_flag (tlb);
+	pa = tlb_va_to_pa (tlb, va);
+	cache = mmu_cache_search (state, MAIN_D_CACHE (), va);
+	if (cache) {
+		cache_t = MAIN_D_CACHE ();
+		goto has_cache;
+	}
+	//chy 2003-08-24, now maybe we don't need minidcache  ????
+#if 0
+	/*search mini cache */
+	cache = mmu_cache_search (state, MINI_D_CACHE (), va);
+	if (cache) {
+		cache_t = MINI_D_CACHE ();
+		goto has_cache;
+	}
+#endif
+	b = tlb_b_flag (tlb);
+	pa = tlb_va_to_pa (tlb, va);
+	//chy 2003-08-24, check phy addr 0xa0000000, size 0x04000000
+	//ywc 2004-11-30, inactive this check because of using 0xc0000000 as the framebuffer start address
+	/*
+	   if(pa >= 0xb0000000){
+	   printf("SKYEYE:xscale_mmu_write phy address 0x%x error,reg[15] 0x%x\n",pa,state->Reg[15]);
+	   return 0;
+	   }
+	 */
+
+	//chy 2003-08-24, now maybe we don't need WB  ????
+#if 0
+	if (b) {
+		if (MMU_WBEnabled) {
+			if (datatype == ARM_WORD_TYPE)
+				mmu_wb_write_bytes (state, WB (), pa, &data,
+						    4);
+			else if (datatype == ARM_HALFWORD_TYPE)
+				mmu_wb_write_bytes (state, WB (),
+						    (pa | (real_va & 2)),
+						    &data, 2);
+			else if (datatype == ARM_BYTE_TYPE)
+				mmu_wb_write_bytes (state, WB (),
+						    (pa | (real_va & 3)),
+						    &data, 1);
+
+		}
+		else {
+			if (datatype == ARM_WORD_TYPE)
+				mem_write_word (state, pa, data);
+			else if (datatype == ARM_HALFWORD_TYPE)
+				mem_write_halfword (state,
+						    (pa | (real_va & 2)),
+						    data);
+			else if (datatype == ARM_BYTE_TYPE)
+				mem_write_byte (state, (pa | (real_va & 3)),
+						data);
+		}
+	}
+	else {
+
+		mmu_wb_drain_all (state, WB ());
+
+		if (datatype == ARM_WORD_TYPE)
+			mem_write_word (state, pa, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			mem_write_halfword (state, (pa | (real_va & 2)),
+					    data);
+		else if (datatype == ARM_BYTE_TYPE)
+			mem_write_byte (state, (pa | (real_va & 3)), data);
+	}
+#endif
+	//chy 2003-08-24, just write phy addr
+	if (datatype == ARM_WORD_TYPE)
+		//mem_write_word (state, pa, data);
+		bus_write(32, pa, data);
+	else if (datatype == ARM_HALFWORD_TYPE)
+		//mem_write_halfword (state, (pa | (real_va & 2)), data);
+		bus_write(16, pa | (real_va & 2), data);
+	else if (datatype == ARM_BYTE_TYPE)
+		//mem_write_byte (state, (pa | (real_va & 3)), data);
+		bus_write(8, (pa | (real_va & 3)), data);
+#if 0
+//-------------------------------------------------------------
+//chy 2003-09-02 for test ????
+	if (datatype == ARM_WORD_TYPE) {
+		if (real_va >= 0xffff0000 && real_va <= 0xffff0020) {
+			printf ("**SKYEYE:mmu_write word: pa %x, va %x, data %x, R15 %x \n", pa, real_va, data, state->Reg[15]);
+		}
+	}
+//--------------------------------------------------------------
+#endif
+	return NO_FAULT;
+
+      has_cache:
+	index = va_cache_index (va, cache_t);
+	//cache->data[index] = data;
+
+	if (datatype == ARM_WORD_TYPE)
+		cache->data[index] = data;
+	else if (datatype == ARM_HALFWORD_TYPE) {
+		temp = cache->data[index];
+		offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3;	/* bit offset into the word */
+		cache->data[index] =
+			(temp & ~(0xffffL << offset)) | ((data & 0xffffL) <<
+							 offset);
+	}
+	else if (datatype == ARM_BYTE_TYPE) {
+		temp = cache->data[index];
+		offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3;	/* bit offset into the word */
+		cache->data[index] =
+			(temp & ~(0xffL << offset)) | ((data & 0xffL) <<
+						       offset);
+	}
+
+	if (index < (cache_t->width >> (WORD_SHT + 1)))
+		cache->tag |= TAG_FIRST_HALF_DIRTY;
+	else
+		cache->tag |= TAG_LAST_HALF_DIRTY;
+//-------------------------------------------------------------
+//chy 2003-09-03 be sure the changed value will be in memory as soon as possible, so I cache can get the newest value
+#if 0
+	{
+		if (datatype == ARM_WORD_TYPE)
+			mem_write_word (state, pa, data);
+		else if (datatype == ARM_HALFWORD_TYPE)
+			mem_write_halfword (state, (pa | (real_va & 2)),
+					    data);
+		else if (datatype == ARM_BYTE_TYPE)
+			mem_write_byte (state, (pa | (real_va & 3)), data);
+	}
+#endif
+#if 0
+//chy 2003-09-02 for test ????
+	if (datatype == ARM_WORD_TYPE) {
+		if (real_va >= 0xffff0000 && real_va <= 0xffff0020) {
+			printf ("**SKYEYE:mmu_write word:cache: pa %x, va %x, data %x, R15 %x\n", pa, real_va, data, state->Reg[15]);
+		}
+	}
+//-------------------------------------------------------------
+#endif
+	if (datatype == ARM_WORD_TYPE)
+		//mem_write_word (state, pa, data);
+		bus_write(32, pa, data);
+	else if (datatype == ARM_HALFWORD_TYPE)
+		//mem_write_halfword (state, (pa | (real_va & 2)), data);
+		bus_write(16, pa | (real_va & 2), data);
+	else if (datatype == ARM_BYTE_TYPE)
+		//mem_write_byte (state, (pa | (real_va & 3)), data);
+		bus_write(8, (pa | (real_va & 3)), data);
+	return NO_FAULT;
+}
+
+ARMword xscale_cp15_mrc (ARMul_State * state,
+			 unsigned type, ARMword instr, ARMword * value)
+{
+	return xscale_mmu_mrc (state, instr, value);
+}
+
+ARMword xscale_mmu_mrc (ARMul_State * state, ARMword instr, ARMword * value)
+{
+	ARMword data;
+	unsigned opcode_2 = BITS (5, 7);
+	unsigned CRm = BITS (0, 3);
+	unsigned reg = BITS (16, 19);
+	unsigned result;
+	mmu_regnum_t creg = (mmu_regnum_t)reg;
+
+/*
+ printf("SKYEYE: xscale_cp15_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\
+	state->Reg[15], instr);
+*/
+	switch (creg) {
+	case MMU_ID:		//XSCALE_CP15
+		//printf("mmu_mrc read ID       \n");
+		data = (opcode_2 ? state->mmu.cache_type : state->cpu->
+			cpu_val);
+		break;
+	case MMU_CONTROL:	//XSCALE_CP15_AUX_CONTROL
+		//printf("mmu_mrc read CONTROL  \n");
+		data = (opcode_2 ? state->mmu.aux_control : state->mmu.
+			control);
+		break;
+	case MMU_TRANSLATION_TABLE_BASE:
+		//printf("mmu_mrc read TTB      \n");
+		data = state->mmu.translation_table_base;
+		break;
+	case MMU_DOMAIN_ACCESS_CONTROL:
+		//printf("mmu_mrc read DACR     \n");
+		data = state->mmu.domain_access_control;
+		break;
+	case MMU_FAULT_STATUS:
+		//printf("mmu_mrc read FSR      \n");
+		data = state->mmu.fault_status;
+		break;
+	case MMU_FAULT_ADDRESS:
+		//printf("mmu_mrc read FAR      \n");
+		data = state->mmu.fault_address;
+		break;
+	case MMU_PID:
+		//printf("mmu_mrc read PID      \n");
+		data = state->mmu.process_id;
+	case XSCALE_CP15_COPRO_ACCESS:
+		//printf("xscale cp15 read coprocessor access\n");
+		data = state->mmu.copro_access;
+		break;
+	default:
+		data = 0;
+		printf ("SKYEYE: xscale_cp15_mrc read UNKNOWN - reg %d, pc 0x%x\n", creg, state->Reg[15]);
+		// skyeye_exit (-1);
+		break;
+	}
+	*value = data;
+	//printf("SKYEYE: xscale_cp15_mrc:end value  0x%x\n",data);
+	return ARMul_DONE;
+}
+
+void xscale_cp15_cache_ops (ARMul_State * state, ARMword instr, ARMword value)
+{
+//chy: 2003-08-24 now, the BTB isn't simualted ....????
+
+	unsigned CRm, OPC_2;
+
+	CRm = BITS (0, 3);
+	OPC_2 = BITS (5, 7);
+	//err_msg("SKYEYE: xscale cp15_cache_ops:OPC_2 = 0x%x CRm = 0x%x, Reg15 0x%x\n", OPC_2, CRm,state->Reg[15]);
+
+	if (OPC_2 == 0 && CRm == 7) {
+		mmu_cache_invalidate_all (state, I_CACHE ());
+		mmu_cache_invalidate_all (state, MAIN_D_CACHE ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 5) {
+		mmu_cache_invalidate_all (state, I_CACHE ());
+		return;
+	}
+	if (OPC_2 == 1 && CRm == 5) {
+		mmu_cache_invalidate (state, I_CACHE (), value);
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 6) {
+		mmu_cache_invalidate_all (state, MAIN_D_CACHE ());
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 6) {
+		mmu_cache_invalidate (state, MAIN_D_CACHE (), value);
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 0xa) {
+		mmu_cache_clean (state, MAIN_D_CACHE (), value);
+		return;
+	}
+
+	if (OPC_2 == 4 && CRm == 0xa) {
+		mmu_wb_drain_all (state, WB ());
+		return;
+	}
+
+	if (OPC_2 == 6 && CRm == 5) {
+		//chy 2004-07-19 shoud fix in the future????!!!!
+		//printf("SKYEYE: xscale_cp15_cache_ops:invalidate BTB CANT!!!!!!!!!!\n"); 
+		//exit(-1);
+		return;
+	}
+
+	if (OPC_2 == 5 && CRm == 2) {
+		//printf("SKYEYE: cp15_c_o: A L in D C, value %x, reg15 %x\n",value, state->Reg[15]); 
+		//exit(-1);
+		//chy 2003-09-01 for test
+		mmu_cache_invalidate_all (state, MAIN_D_CACHE ());
+		return;
+	}
+
+	ERROR_LOG(ARM11, "SKYEYE: xscale cp15_cache_ops:Unknown OPC_2 = 0x%x CRm = 0x%x, Reg15 0x%x\n", OPC_2, CRm, state->Reg[15]);
+	// skyeye_exit (-1);
+}
+
+static void
+	xscale_cp15_tlb_ops (ARMul_State * state, ARMword instr,
+			     ARMword value)
+{
+	int CRm, OPC_2;
+
+	CRm = BITS (0, 3);
+	OPC_2 = BITS (5, 7);
+
+
+	//err_msg("SKYEYE:xscale_cp15_tlb_ops:OPC_2 = 0x%x CRm = 0x%x,Reg[15] 0x%x\n", OPC_2, CRm,state->Reg[15]);
+	if (OPC_2 == 0 && CRm == 0x7) {
+		mmu_tlb_invalidate_all (state, I_TLB ());
+		mmu_tlb_invalidate_all (state, D_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 0x5) {
+		mmu_tlb_invalidate_all (state, I_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 0x5) {
+		mmu_tlb_invalidate_entry (state, I_TLB (), value);
+		return;
+	}
+
+	if (OPC_2 == 0 && CRm == 0x6) {
+		mmu_tlb_invalidate_all (state, D_TLB ());
+		return;
+	}
+
+	if (OPC_2 == 1 && CRm == 0x6) {
+		mmu_tlb_invalidate_entry (state, D_TLB (), value);
+		return;
+	}
+
+	ERROR_LOG(ARM11, "SKYEYE:xscale_cp15_tlb_ops:Unknow OPC_2 = 0x%x CRm = 0x%x,Reg[15] 0x%x\n", OPC_2, CRm, state->Reg[15]);
+	// skyeye_exit (-1);
+}
+
+
+ARMword xscale_cp15_mcr (ARMul_State * state,
+			 unsigned type, ARMword instr, ARMword value)
+{
+	return xscale_mmu_mcr (state, instr, value);
+}
+
+ARMword xscale_mmu_mcr (ARMul_State * state, ARMword instr, ARMword value)
+{
+	ARMword data;
+	unsigned opcode_2 = BITS (5, 7);
+	unsigned CRm = BITS (0, 3);
+	unsigned reg = BITS (16, 19);
+	unsigned result;
+	mmu_regnum_t creg = (mmu_regnum_t)reg;
+
+	//printf("SKYEYE: xscale_cp15_mcr: opcode_2 0x%x, CRm 0x%x, reg ox%x, value 0x%x, reg[15] 0x%x, instr 0x%x\n",opcode_2,CRm,reg, value, state->Reg[15], instr);
+
+	switch (creg) {
+	case MMU_CONTROL:
+		//printf("mmu_mcr wrote CONTROL  val 0x%x       \n",value);
+		state->mmu.control =
+			(opcode_2 ? (value & 0x33) : (value & 0x3FFF));
+		break;
+	case MMU_TRANSLATION_TABLE_BASE:
+		//printf("mmu_mcr wrote TTB      val 0x%x       \n",value);
+		state->mmu.translation_table_base = value & 0xFFFFC000;
+		break;
+	case MMU_DOMAIN_ACCESS_CONTROL:
+		//printf("mmu_mcr wrote DACR    val 0x%x \n",value);
+		state->mmu.domain_access_control = value;
+		break;
+
+	case MMU_FAULT_STATUS:
+		//printf("mmu_mcr wrote FS        val 0x%x \n",value);
+		state->mmu.fault_status = value & 0x6FF;
+		break;
+	case MMU_FAULT_ADDRESS:
+		//printf("mmu_mcr wrote FA         val 0x%x \n",value);
+		state->mmu.fault_address = value;
+		break;
+
+	case MMU_CACHE_OPS:
+//              printf("mmu_mcr wrote CO         val 0x%x \n",value);
+		xscale_cp15_cache_ops (state, instr, value);
+		break;
+	case MMU_TLB_OPS:
+		//printf("mmu_mcr wrote TO          val 0x%x \n",value);
+		xscale_cp15_tlb_ops (state, instr, value);
+		break;
+	case MMU_PID:
+		//printf("mmu_mcr wrote PID          val 0x%x \n",value);
+		state->mmu.process_id = value & 0xfe000000;
+		break;
+	case XSCALE_CP15_COPRO_ACCESS:
+		//printf("xscale cp15 write coprocessor access  val 0x %x\n",value);
+		state->mmu.copro_access = value & 0x3ff;
+		break;
+
+	default:
+		printf ("SKYEYE: xscale_cp15_mcr wrote UNKNOWN - reg %d, reg15 0x%x\n", creg, state->Reg[15]);
+		break;
+	}
+	//printf("SKYEYE: xscale_cp15_mcr wrote val 0x%x\n", value);
+	return 0;
+}
+
+//teawater add for arm2x86 2005.06.24-------------------------------------------
+static int xscale_mmu_v2p_dbct (ARMul_State * state, ARMword virt_addr,
+				ARMword * phys_addr)
+{
+	fault_t fault;
+	tlb_entry_t *tlb;
+
+	virt_addr = mmu_pid_va_map (virt_addr);
+	if (MMU_Enabled) {
+
+		/*align check */
+		if ((virt_addr & (WORD_SIZE - 1)) && MMU_Aligned) {
+			DEBUG_LOG(ARM11, "align\n");
+			return ALIGNMENT_FAULT;
+		}
+		else
+			virt_addr &= ~(WORD_SIZE - 1);
+
+		/*translate tlb */
+		fault = translate (state, virt_addr, I_TLB (), &tlb);
+		if (fault) {
+			DEBUG_LOG(ARM11, "translate\n");
+			return fault;
+		}
+
+		/*check access */
+		fault = check_access (state, virt_addr, tlb, 1);
+		if (fault) {
+			DEBUG_LOG(ARM11, "check_fault\n");
+			return fault;
+		}
+	}
+
+	if (MMU_Disabled) {
+		*phys_addr = virt_addr;
+	}
+	else {
+		*phys_addr = tlb_va_to_pa (tlb, virt_addr);
+	}
+
+	return (0);
+}
+
+//AJ2D--------------------------------------------------------------------------
+
+/*xscale mmu_ops_t*/
+mmu_ops_t xscale_mmu_ops = {
+	xscale_cp15_init,
+		xscale_cp15_exit,
+		xscale_mmu_read_byte,
+		xscale_mmu_write_byte,
+		xscale_mmu_read_halfword,
+		xscale_mmu_write_halfword,
+		xscale_mmu_read_word,
+		xscale_mmu_write_word,
+		xscale_mmu_load_instr, xscale_mmu_mcr, xscale_mmu_mrc,
+//teawater add for arm2x86 2005.06.24-------------------------------------------
+		xscale_mmu_v2p_dbct,
+//AJ2D--------------------------------------------------------------------------
+};
diff --git a/src/core/core.vcxproj b/src/core/core.vcxproj
index 1aaf28ee..02d0387a 100644
--- a/src/core/core.vcxproj
+++ b/src/core/core.vcxproj
@@ -146,12 +146,18 @@
     <ClCompile Include="arm\interpreter\armsupp.cpp" />
     <ClCompile Include="arm\interpreter\armvirt.cpp" />
     <ClCompile Include="arm\interpreter\arm_interpreter.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\arm1176jzf_s_mmu.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\cache.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\rb.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\sa_mmu.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\tlb.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\wb.cpp" />
+    <ClCompile Include="arm\interpreter\mmu\xscale_copro.cpp" />
     <ClCompile Include="arm\interpreter\thumbemu.cpp" />
     <ClCompile Include="arm\interpreter\vfp\vfp.cpp" />
     <ClCompile Include="arm\interpreter\vfp\vfpdouble.cpp" />
     <ClCompile Include="arm\interpreter\vfp\vfpinstr.cpp" />
     <ClCompile Include="arm\interpreter\vfp\vfpsingle.cpp" />
-    <ClCompile Include="arm\mmu\arm1176jzf_s_mmu.cpp" />
     <ClCompile Include="core.cpp" />
     <ClCompile Include="core_timing.cpp" />
     <ClCompile Include="elf\elf_reader.cpp" />
@@ -185,15 +191,16 @@
     <ClInclude Include="arm\interpreter\armos.h" />
     <ClInclude Include="arm\interpreter\arm_interpreter.h" />
     <ClInclude Include="arm\interpreter\arm_regformat.h" />
+    <ClInclude Include="arm\interpreter\mmu\arm1176jzf_s_mmu.h" />
+    <ClInclude Include="arm\interpreter\mmu\cache.h" />
+    <ClInclude Include="arm\interpreter\mmu\rb.h" />
+    <ClInclude Include="arm\interpreter\mmu\sa_mmu.h" />
+    <ClInclude Include="arm\interpreter\mmu\tlb.h" />
+    <ClInclude Include="arm\interpreter\mmu\wb.h" />
     <ClInclude Include="arm\interpreter\skyeye_defs.h" />
     <ClInclude Include="arm\interpreter\vfp\asm_vfp.h" />
     <ClInclude Include="arm\interpreter\vfp\vfp.h" />
     <ClInclude Include="arm\interpreter\vfp\vfp_helper.h" />
-    <ClInclude Include="arm\mmu\arm1176jzf_s_mmu.h" />
-    <ClInclude Include="arm\mmu\cache.h" />
-    <ClInclude Include="arm\mmu\rb.h" />
-    <ClInclude Include="arm\mmu\tlb.h" />
-    <ClInclude Include="arm\mmu\wb.h" />
     <ClInclude Include="core.h" />
     <ClInclude Include="core_timing.h" />
     <ClInclude Include="elf\elf_reader.h" />
diff --git a/src/core/core.vcxproj.filters b/src/core/core.vcxproj.filters
index 7436b9ed..dba6b6f6 100644
--- a/src/core/core.vcxproj.filters
+++ b/src/core/core.vcxproj.filters
@@ -7,9 +7,6 @@
     <Filter Include="arm\disassembler">
       <UniqueIdentifier>{61100188-a726-4024-ab16-95ee242b446e}</UniqueIdentifier>
     </Filter>
-    <Filter Include="arm\mmu">
-      <UniqueIdentifier>{a64d3c8a-747a-491b-b782-6e2622bedf24}</UniqueIdentifier>
-    </Filter>
     <Filter Include="file_sys">
       <UniqueIdentifier>{7f618562-73d1-4f55-9628-887497c27654}</UniqueIdentifier>
     </Filter>
@@ -31,6 +28,9 @@
     <Filter Include="arm\interpreter\vfp">
       <UniqueIdentifier>{de62238f-a28e-4a33-8495-23fed6784588}</UniqueIdentifier>
     </Filter>
+    <Filter Include="arm\interpreter\mmu">
+      <UniqueIdentifier>{13ef9860-2ba0-47e9-a93d-b4052adab269}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="arm\disassembler\arm_disasm.cpp">
@@ -60,9 +60,6 @@
     <ClCompile Include="arm\interpreter\thumbemu.cpp">
       <Filter>arm\interpreter</Filter>
     </ClCompile>
-    <ClCompile Include="arm\mmu\arm1176jzf_s_mmu.cpp">
-      <Filter>arm\mmu</Filter>
-    </ClCompile>
     <ClCompile Include="file_sys\directory_file_system.cpp">
       <Filter>file_sys</Filter>
     </ClCompile>
@@ -129,6 +126,27 @@
     <ClCompile Include="arm\interpreter\vfp\vfpsingle.cpp">
       <Filter>arm\interpreter\vfp</Filter>
     </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\arm1176jzf_s_mmu.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\xscale_copro.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\sa_mmu.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\cache.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\rb.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\tlb.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
+    <ClCompile Include="arm\interpreter\mmu\wb.cpp">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="arm\disassembler\arm_disasm.h">
@@ -158,21 +176,6 @@
     <ClInclude Include="arm\interpreter\skyeye_defs.h">
       <Filter>arm\interpreter</Filter>
     </ClInclude>
-    <ClInclude Include="arm\mmu\arm1176jzf_s_mmu.h">
-      <Filter>arm\mmu</Filter>
-    </ClInclude>
-    <ClInclude Include="arm\mmu\cache.h">
-      <Filter>arm\mmu</Filter>
-    </ClInclude>
-    <ClInclude Include="arm\mmu\rb.h">
-      <Filter>arm\mmu</Filter>
-    </ClInclude>
-    <ClInclude Include="arm\mmu\tlb.h">
-      <Filter>arm\mmu</Filter>
-    </ClInclude>
-    <ClInclude Include="arm\mmu\wb.h">
-      <Filter>arm\mmu</Filter>
-    </ClInclude>
     <ClInclude Include="file_sys\directory_file_system.h">
       <Filter>file_sys</Filter>
     </ClInclude>
@@ -247,6 +250,24 @@
     <ClInclude Include="arm\interpreter\vfp\vfp_helper.h">
       <Filter>arm\interpreter\vfp</Filter>
     </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\arm1176jzf_s_mmu.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\cache.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\rb.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\tlb.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\wb.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
+    <ClInclude Include="arm\interpreter\mmu\sa_mmu.h">
+      <Filter>arm\interpreter\mmu</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Text Include="CMakeLists.txt" />