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8f48c06290
The arm64 hw_breakpoint interface is slightly less flexible than its 32-bit counterpart, thanks to some changes in the architecture rendering unaligned watchpoint addresses obselete for AArch64. However, in a multi-arch environment (i.e. debugging a 32-bit target with a 64-bit GDB under a 64-bit kernel), we need to provide a feature compatible interface to GDB in order for debugging to function correctly. This patch adds a new helper, is_compat_bp, to our hw_breakpoint implementation which changes the interface behaviour based on the architecture of the debug target as opposed to the debugger itself. This allows debugged to function as expected for multi-arch configurations without relying on deprecated architectural behaviours when debugging native applications. Cc: Yao Qi <yao.qi@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>