linux-toradex.git/arch/microblaze/kernel/kgdb.c, branch tegra Linux kernel for Apalis and Colibri modules microblaze: KGDB little endian support 2010-10-21T05:51:58+00:00 Michal Simek monstr@monstr.eu 2010-09-28T05:49:17+00:00 e4f29092272ee91a34d3660c31f15ed103057aa0 Just need to use little-endian opcode for brki r16, 0x18 Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com> 
Just need to use little-endian opcode for brki r16, 0x18

Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Jason Wessel <jason.wessel@windriver.com>
microblaze: kgdb: Remove unused variable and fix return value 2010-10-21T05:51:19+00:00 Michal Simek monstr@monstr.eu 2010-08-10T06:19:03+00:00 f859f0a235d4d9e7eae49bf10bab6b0967d328f6 I forget to remove unused variable from kgdb_arch_handle_exception. Fix return value in microblaze_kgdb_break function. Error log: arch/microblaze/kernel/kgdb.c: In function 'microblaze_kgdb_break': arch/microblaze/kernel/kgdb.c:83: warning: 'return' with a value, in function returning void arch/microblaze/kernel/kgdb.c: In function 'kgdb_arch_handle_exception': arch/microblaze/kernel/kgdb.c:119: warning: unused variable 'cpu' Signed-off-by: Michal Simek <monstr@monstr.eu> 
I forget to remove unused variable from kgdb_arch_handle_exception.
Fix return value in microblaze_kgdb_break function.

Error log:
arch/microblaze/kernel/kgdb.c: In function 'microblaze_kgdb_break':
arch/microblaze/kernel/kgdb.c:83: warning: 'return' with a value, in function returning void
arch/microblaze/kernel/kgdb.c: In function 'kgdb_arch_handle_exception':
arch/microblaze/kernel/kgdb.c:119: warning: unused variable 'cpu'

Signed-off-by: Michal Simek <monstr@monstr.eu>
microblaze: Add KGDB support 2010-08-04T08:45:17+00:00 Michal Simek monstr@monstr.eu 2010-08-03T09:45:08+00:00 2d5973cb5ac5d04662f86e19a06a4c52fa4c4ae3 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 <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com> CC: John Williams <john.williams@petalogix.com> CC: Edgar E. Iglesias <edgar.iglesias@petalogix.com> CC: linux-kernel@vger.kernel.org Acked-by: Jason Wessel <jason.wessel@windriver.com> 
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 <monstr@monstr.eu>
CC: Jason Wessel <jason.wessel@windriver.com>
CC: John Williams <john.williams@petalogix.com>
CC: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
CC: linux-kernel@vger.kernel.org
Acked-by: Jason Wessel <jason.wessel@windriver.com>