allow minidrivers to implement inner loop of dcc memory writes

git-svn-id: svn://svn.berlios.de/openocd/trunk@879 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/target/arm7_9_common.c

@@ -2195,24 +2195,10 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe
 		embeddedice_reg_t *ice_reg = arm7_9->eice_cache->reg_list[EICE_COMMS_DATA].arch_info;
 		u8 reg_addr = ice_reg->addr & 0x1f;
 		int chain_pos = ice_reg->jtag_info->chain_pos;
-		/* we want the compiler to duplicate the code, which it does not
-		 * do automatically.
-		 */
-		if (little)
-		{
-			for (i = 1; i < count - 1; i++)
-			{
-				embeddedice_write_reg_inner(chain_pos, reg_addr, fast_target_buffer_get_u32(buffer, little));
-				buffer += 4;
-			}
-		} else
-		{
-			for (i = 1; i < count - 1; i++)
-			{
-				embeddedice_write_reg_inner(chain_pos, reg_addr, fast_target_buffer_get_u32(buffer, little));
-				buffer += 4;
-			}
-		}
+
+		embeddedice_write_dcc(chain_pos, reg_addr, buffer, little, count-2);
+		buffer += (count-2)*4;
+
 		embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little));
 	} else
 	{

src/target/embeddedice.c

@@ -548,3 +548,14 @@ int embeddedice_handshake(arm_jtag_t *jtag_info, int hsbit, u32 timeout)
 
 	return ERROR_TARGET_TIMEOUT;
 }
+
+/* this is the inner loop of the open loop DCC write of data to target */
+void MINIDRIVER(embeddedice_write_dcc)(int chain_pos, int reg_addr, u8 *buffer, int little, int count)
+{
+	int i;
+	for (i = 0; i < count; i++)
+	{
+		embeddedice_write_reg_inner(chain_pos, reg_addr, fast_target_buffer_get_u32(buffer, little));
+		buffer += 4;
+	}
+}

src/target/embeddedice.h

@@ -124,5 +124,7 @@ static __inline__ void embeddedice_write_reg_inner(int chain_pos, int reg_addr,
 			-1);
 }
 
+void embeddedice_write_dcc(int chain_pos, int reg_addr, u8 *buffer, int little, int count);
+
 
 #endif /* EMBEDDED_ICE_H */