Cortex-A8 Technical Reference Manual - ARM Information Center

Debug
Table 12-59 Values to write to WCR for a simple watchpoint (continued)
Example 12-8 shows the code for setting a simple aligned watchpoint.
Example 12-8 Setting a simple aligned watchpoint
SetSimpleAlignedWatchpoint(int watch_num, uint32 address, int size)
{
// Step 1. Disable the watchpoint being set.
WriteDebugRegister(112 + watch_num, 0);
// (Step 2. Write address to the WVR, leaving the bottom 3 bits zero.
WriteDebugRegister(96 + watch_num, address & 0xFFFFFF8);
// Step 3. Determine the byte address select value to use.
case (size) of
{
when 1:
byte_address_select := (1'b1