From 2d5973cb5ac5d04662f86e19a06a4c52fa4c4ae3 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 3 Aug 2010 11:45:08 +0200 Subject: microblaze: Add KGDB support Kgdb uses brki r16, 0x18 instruction to call low level _debug_exception function which save current state to pt_regs and call microblaze_kgdb_break function. _debug_exception should be called only from the kernel space. User space calling is not supported because user application debugging uses different handling. pt_regs_to_gdb_regs loads additional special registers which can't be changed * Enable KGDB in Kconfig * Remove ancient not-tested KGDB support * Remove ancient _debug_exception code from entry.S Only MMU KGDB support is supported. Signed-off-by: Michal Simek CC: Jason Wessel CC: John Williams CC: Edgar E. Iglesias CC: linux-kernel@vger.kernel.org Acked-by: Jason Wessel --- arch/microblaze/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/microblaze/Kconfig') diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index a51742190c12..be3855250db6 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -14,6 +14,7 @@ config MICROBLAZE select USB_ARCH_HAS_EHCI select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_OPROFILE + select HAVE_ARCH_KGDB select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG select TRACING_SUPPORT -- cgit v1.2.3