diff --git a/target-sparc/helper.c b/target-sparc/helper.c
index 5fc1da1a83..f4111b3f6b 100644
--- a/target-sparc/helper.c
+++ b/target-sparc/helper.c
@@ -129,8 +129,7 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
     /* SPARC reference MMU table walk: Context table->L1->L2->PTE */
     /* Context base + context number */
     pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4);
-    cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-    bswap32s(&pde);
+    pde = ldl_phys(pde_ptr);
 
     /* Ctx pde */
     switch (pde & PTE_ENTRYTYPE_MASK) {
@@ -142,8 +141,7 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
         return 4;
     case 1: /* L0 PDE */
 	pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
-	cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-	bswap32s(&pde);
+        pde = ldl_phys(pde_ptr);
 
 	switch (pde & PTE_ENTRYTYPE_MASK) {
 	default:
@@ -153,8 +151,7 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
 	    return 4;
 	case 1: /* L1 PDE */
 	    pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
-	    cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-	    bswap32s(&pde);
+            pde = ldl_phys(pde_ptr);
 
 	    switch (pde & PTE_ENTRYTYPE_MASK) {
 	    default:
@@ -164,8 +161,7 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
 		return 4;
 	    case 1: /* L2 PDE */
 		pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
-		cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-		bswap32s(&pde);
+                pde = ldl_phys(pde_ptr);
 
 		switch (pde & PTE_ENTRYTYPE_MASK) {
 		default:
@@ -193,12 +189,10 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
     /* update page modified and dirty bits */
     is_dirty = (rw & 1) && !(pde & PG_MODIFIED_MASK);
     if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
-	uint32_t tmppde;
 	pde |= PG_ACCESSED_MASK;
 	if (is_dirty)
 	    pde |= PG_MODIFIED_MASK;
-	tmppde = bswap32(pde);
-	cpu_physical_memory_write(pde_ptr, (uint8_t *)&tmppde, 4);
+        stl_phys_notdirty(pde_ptr, pde);
     }
     /* check access */
     *access_index = ((rw & 1) << 2) | (rw & 2) | (is_user? 0 : 1);
@@ -356,8 +350,8 @@ uint32_t mmu_probe(uint32_t address, int mmulev)
 
     /* Context base + context number */
     pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4);
-    cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-    bswap32s(&pde);
+    pde = ldl_phys(pde_ptr);
+
     switch (pde & PTE_ENTRYTYPE_MASK) {
     default:
     case 0: /* Invalid */
@@ -368,8 +362,7 @@ uint32_t mmu_probe(uint32_t address, int mmulev)
 	if (mmulev == 3)
 	    return pde;
 	pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
-	cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-	bswap32s(&pde);
+        pde = ldl_phys(pde_ptr);
 
 	switch (pde & PTE_ENTRYTYPE_MASK) {
 	default:
@@ -382,8 +375,7 @@ uint32_t mmu_probe(uint32_t address, int mmulev)
 	    if (mmulev == 2)
 		return pde;
 	    pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
-	    cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-	    bswap32s(&pde);
+            pde = ldl_phys(pde_ptr);
 
 	    switch (pde & PTE_ENTRYTYPE_MASK) {
 	    default:
@@ -396,8 +388,7 @@ uint32_t mmu_probe(uint32_t address, int mmulev)
 		if (mmulev == 1)
 		    return pde;
 		pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
-		cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-		bswap32s(&pde);
+                pde = ldl_phys(pde_ptr);
 
 		switch (pde & PTE_ENTRYTYPE_MASK) {
 		default:
@@ -424,8 +415,7 @@ void dump_mmu(void)
 
     printf("MMU dump:\n");
     pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 4);
-    cpu_physical_memory_read(pde_ptr, (uint8_t *)&pde, 4);
-    bswap32s(&pde);
+    pde = ldl_phys(pde_ptr);
     printf("Root ptr: 0x%08x, ctx: %d\n", env->mmuregs[1] << 4, env->mmuregs[2]);
     for (n = 0, va = 0; n < 256; n++, va += 16 * 1024 * 1024) {
 	pde_ptr = mmu_probe(va, 2);
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
index 850d8c03ea..fecb80dcdd 100644
--- a/target-sparc/op_helper.c
+++ b/target-sparc/op_helper.c
@@ -106,9 +106,9 @@ void helper_ld_asi(int asi, int size, int sign)
     case 0x20 ... 0x2f: /* MMU passthrough */
 	cpu_physical_memory_read(T0, (void *) &ret, size);
 	if (size == 4)
-	    bswap32s(&ret);
-	else if (size == 2)
-	    bswap16s((uint16_t *)&ret);
+	    tswap32s(&ret);
+        else if (size == 2)
+	    tswap16s((uint16_t *)&ret);
 	break;
     default:
 	ret = 0;
@@ -170,7 +170,7 @@ void helper_st_asi(int asi, int size, int sign)
 	    int src = T1, dst = T0;
 	    uint8_t temp[32];
 	    
-	    bswap32s(&src);
+	    tswap32s(&src);
 
 	    cpu_physical_memory_read(src, (void *) &temp, 32);
 	    cpu_physical_memory_write(dst, (void *) &temp, 32);
@@ -185,7 +185,7 @@ void helper_st_asi(int asi, int size, int sign)
 	    uint64_t val;
 	    
 	    val = (((uint64_t)T1) << 32) | T2;
-	    bswap64s(&val);
+	    tswap64s(&val);
 
 	    for (i = 0; i < 32; i += 8, dst += 8) {
 		cpu_physical_memory_write(dst, (void *) &val, 8);
@@ -196,10 +196,9 @@ void helper_st_asi(int asi, int size, int sign)
 	{
 	    int temp = T1;
 	    if (size == 4)
-		bswap32s(&temp);
+		tswap32s(&temp);
 	    else if (size == 2)
-		bswap16s((uint16_t *)&temp);
-
+		tswap16s((uint16_t *)&temp);
 	    cpu_physical_memory_write(T0, (void *) &temp, size);
 	}
 	return;