RealView Debugger User Guide - ARM Information Center

Working with Breakpoints4.8.5 Setting hardware breakpointsSelect a hardware Breakpoint Type to display entries specific to the hardware supportfor breakpoints available on the current target:HW InstrHW ReadHW WriteSets or modifies an instruction address breakpoint. This type ofbreakpoint enables you to perform hardware tests or to compare datavalues.Sets or modifies a read breakpoint at the specified memory location oraddress range (see Specifying address ranges on page 4-7). Thebreakpoint is triggered if the application reads from any part of thespecified memory range. Where supported by your debug target, you canalso add data tests.Sets or modifies a write breakpoint at the specified memory location oraddress range (see Specifying address ranges on page 4-7). Thebreakpoint is triggered if the application writes to any part of thespecified memory range.HW Access Sets or modifies an access breakpoint at the specified memory location oraddress range (see Specifying address ranges on page 4-7). Thebreakpoint is triggered when a memory address is accessed. This type ofbreakpoint enables you to perform hardware tests or to compare datavalues.HW Data Value ReadSets or modifies a breakpoint that is triggered if a specified data value isread from any address, and then detected by the debug hardware on thetarget processor.HW Data Value WriteSets or modifies a breakpoint that is triggered if a specified data value iswritten to any address, and then detected by the debug hardware on thetarget processor.HW Data Value AccessSets or modifies a breakpoint that is triggered if a specified data value isaccessed at any address, and then detected by the debug hardware on thetarget processor.For each of these types, use the HW Support group to specify how the match isconfigured, see:• HW Support settings for RVISS on page 4-47• HW Support settings for target hardware on page 4-484-46 Copyright © 2002-2005 ARM Limited. All rights reserved. ARM DUI 0153G