arm64/debug: Mask off all reserved bits from generated ESR values
authorDave P Martin <Dave.Martin@arm.com>
Fri, 24 Jul 2015 15:37:42 +0000 (16:37 +0100)
committerWill Deacon <will.deacon@arm.com>
Mon, 27 Jul 2015 10:08:42 +0000 (11:08 +0100)
commitdfac68314c969481fcce3dd528728dfa9d85caf5
treec688b6bd22a6d36ee0074474828639c7f61f80c6
parent951757ae83ec611b1c4f1dcfda67246cf5157451
arm64/debug: Mask off all reserved bits from generated ESR values

There are only 16 comment bits in a BRK instruction, which
correspond to ESR bits 15:0.  Bits 24:16 of the ESR are RES0,
and might have weird meanings in the future.

This code inserts 16 bits of comment in the ESR value instead of
20 (almost certainly a typo in the original code).

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
arch/arm64/include/asm/debug-monitors.h