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| author | Michal Simek <monstr@monstr.eu> | 2010-08-03 11:45:08 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2010-08-04 10:45:17 +0200 |
| commit | 2d5973cb5ac5d04662f86e19a06a4c52fa4c4ae3 (patch) | |
| tree | 21ddc58eed5ccad856fc44dfb0ee794da41d5b16 /arch/microblaze/kernel/exceptions.c | |
| parent | microblaze: Support brki rX, 0x18 for user application debugging (diff) | |
| download | linux-2d5973cb5ac5d04662f86e19a06a4c52fa4c4ae3.tar.xz linux-2d5973cb5ac5d04662f86e19a06a4c52fa4c4ae3.zip | |
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 <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>
Diffstat (limited to 'arch/microblaze/kernel/exceptions.c')
| -rw-r--r-- | arch/microblaze/kernel/exceptions.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c index e0c6f8c2bd9d..b98ee8d0c1cd 100644 --- a/arch/microblaze/kernel/exceptions.c +++ b/arch/microblaze/kernel/exceptions.c @@ -59,7 +59,6 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) siginfo_t info; if (kernel_mode(regs)) { - debugger(regs); die("Exception in kernel mode", regs, signr); } info.si_signo = signr; |