From mboxrd@z Thu Jan 1 00:00:00 1970 From: vijay.kilari@gmail.com (vijay.kilari at gmail.com) Date: Mon, 16 Sep 2013 14:25:48 +0530 Subject: [RFC PATCH 0/2] Aarch64: KGDB: kernel debugging support Message-ID: <1379321750-907-1-git-send-email-vijay.kilari@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Vijaya Kumar K Based on the step-handler and break-handler hooks patch http://lists.infradead.org/pipermail/linux-arm-kernel/2013-August/189510.html KGDB debugging support is added for EL1 debug in Aarch64 mode With first patch,register layout is updated to be inline with GDB tool. Basic GDB connection, break point set/clear and info commands are supported except step/next debugging With second patch, step/next debugging support is added, where in ELR_EL1 is updated to point to the instruction to be stepped and stopped. kernel exception handler exit macro in entry.S is update to retain ELR value written by KGDB. Tested with Aarch64 GDB tool chain on simulator Vijaya Kumar K (2): Aarch64: KGDB: Add Basic KGDB support Aarch64: KGDB: Add Step debugging support arch/arm64/include/asm/debug-monitors.h | 3 + arch/arm64/include/asm/kgdb.h | 61 ++++++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/debug-monitors.c | 15 ++ arch/arm64/kernel/entry.S | 9 +- arch/arm64/kernel/kgdb.c | 323 +++++++++++++++++++++++++++++++ 6 files changed, 411 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/include/asm/kgdb.h create mode 100644 arch/arm64/kernel/kgdb.c -- 1.7.9.5