From mboxrd@z Thu Jan 1 00:00:00 1970 From: panand@redhat.com (Pratyush Anand) Date: Thu, 08 Jan 2015 23:01:12 +0530 Subject: [RFC 1/8] ARM64: Move BRK opcodes defines from kprobes.h to insn.h In-Reply-To: <20150108165506.GP11583@arm.com> References: <5beb1ff58d4928a873be5e898b62d8cc2003ec7c.1420038188.git.panand@redhat.com> <20150108165506.GP11583@arm.com> Message-ID: <54AEBEE0.8030100@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thursday 08 January 2015 10:25 PM, Will Deacon wrote: > On Wed, Dec 31, 2014 at 03:21:17PM +0000, Pratyush Anand wrote: >> Its better to keep all BRK opcodes used by kprobes and uprobes at one >> place. Therefore move these defines to asm/insn.h. >> >> Signed-off-by: Pratyush Anand >> --- >> arch/arm64/include/asm/insn.h | 6 ++++++ >> arch/arm64/kernel/kprobes.h | 7 +------ >> 2 files changed, 7 insertions(+), 6 deletions(-) >> >> diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h >> index e2ff32a93b5c..87fa48746806 100644 >> --- a/arch/arm64/include/asm/insn.h >> +++ b/arch/arm64/include/asm/insn.h >> @@ -23,6 +23,12 @@ >> /* A64 instructions are always 32 bits. */ >> #define AARCH64_INSN_SIZE 4 >> >> +/* BRK opcodes with ESR encoding */ >> +#define BRK64_ESR_MASK 0xFFFF >> +#define BRK64_ESR_KPROBES 0x0004 >> +#define BRK64_OPCODE_KPROBES 0xD4200080 /* "brk 0x4" */ > > These might be better off in debug-monitors.h, but I guess that's for the > kprobes series to sort out. > Agreed. ~Pratyush >> +#define ARCH64_NOP_OPCODE 0xD503201F > > We have aarch64_insn_gen_nop for this. > > Will >