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Jason Wessel dcc7871128 kgdb: core changes to support kdb 
These are the minimum changes to the kgdb core in order to enable an
API to connect a new front end (kdb) to the debug core.

This patch introduces the dbg_kdb_mode variable controls where the
user level I/O is routed.  It will be routed to the gdbstub (kgdb) or
to the kdb front end which is a simple shell available over the kgdboc
connection.

You can switch back and forth between kdb or the gdb stub mode of
operation dynamically.  From gdb stub mode you can blindly type
"$3#33", or from the kdb mode you can enter "kgdb" to switch to the
gdb stub.

The logic in the debug core depends on kdb to look for the typical gdb
connection sequences and return immediately with KGDB_PASS_EVENT if a
gdb serial command sequence is detected.  That should allow a
reasonably seamless transition between kdb -> gdb without leaving the
kernel exception state.  The two gdb serial queries that kdb is
responsible for detecting are the "?" and "qSupported" packets.

CC: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Martin Hicks <mort@sgi.com>
2010-05-20 21:04:21 -05:00
..
.gitignore [ARM] 5194/1: update .gitignore 2008-08-12 19:54:09 +01:00
armksyms.c ARM: unexport symbols used to implement floating point emulation 2009-12-15 16:28:22 +10:30
arthur.c [ARM] arm/kernel/arthur.c: add MODULE_LICENSE 2008-05-17 22:55:16 +01:00
asm-offsets.c ARM: dma-mapping: provide per-cpu type map/unmap functions 2010-02-15 15:22:20 +00:00
atags.c clean up atags exporting code 2008-05-30 10:33:49 +02:00
atags.h [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
bios32.c ARM: 6058/1: Add support for PCI domains 2010-04-22 21:38:11 +01:00
calls.S Add generic sys_old_mmap() 2010-03-12 15:52:32 -08:00
compat.c
compat.h
crunch-bits.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
crunch.c ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread() 2009-12-18 14:53:41 +00:00
debug.S ARM: 5910/1: ARM: Add tmp register for addruart and loadsp 2010-02-12 17:27:52 +00:00
dma-isa.c ARM: dma-isa: request cascade channel after registering it 2009-12-24 18:34:08 +00:00
dma.c ARM: dma: add /proc/dma support to arch/arm/kernel/dma.c 2010-04-14 13:13:30 +01:00
early_printk.c ARM: Add an earlyprintk debug console 2009-12-09 10:02:18 +00:00
ecard.c arm: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:43 -08:00
ecard.h [ARM] rpc: ecard: remove deprecated ecard_address() and relatives 2008-07-03 14:25:58 +01:00
elf.c ARM: 5883/1: Revert "disable NX support for OABI-supporting kernels" 2010-01-18 14:12:11 +00:00
entry-armv.S ARM: 6068/1: Fix build break with KPROBES enabled 2010-05-01 11:32:53 +01:00
entry-common.S Unify sys_mmap* 2009-12-11 06:44:29 -05:00
entry-header.S ARM: 5991/1: Fix regression in restore_user_regs macro 2010-03-15 17:20:08 +00:00
etm.c ARM: 5841/1: a driver for on-chip ETM and ETB 2009-12-02 10:25:22 +00:00
fiq.c [ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions 2009-03-12 21:33:03 +00:00
ftrace.c ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
head-common.S ARM: 5784/1: fix early boot machine ID mismatch error display 2009-11-08 11:58:54 +00:00
head-nommu.S ARM: convert to use __HEAD and HEAD_TEXT macros. 2009-11-23 20:33:34 +00:00
head.S ARM: convert to use __HEAD and HEAD_TEXT macros. 2009-11-23 20:33:34 +00:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
io.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
irq.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
isa.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
iwmmxt.S
kgdb.c kgdb: core changes to support kdb 2010-05-20 21:04:21 -05:00
kprobes-decode.c [ARM] 5221/1: fix ldm/stm emulation for kprobes 2008-09-01 12:06:33 +01:00
kprobes.c Merge branch 'master' into export-slabh 2010-04-05 11:37:28 +09:00
leds.c ARM: move LED support code out of arch/arm/kernel/time.c 2010-02-15 21:39:12 +00:00
machine_kexec.c [ARM] Storage class should be before const qualifier 2009-02-10 09:59:19 +00:00
Makefile Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
module.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
perf_event.c ARM: 6071/1: perf-events: allow modules to query the number of hardware counters 2010-05-17 11:53:58 +01:00
pmu.c ARM: 6064/1: pmu: register IRQs at runtime 2010-05-17 11:53:57 +01:00
process.c ARM: fix build error in arch/arm/kernel/process.c 2010-04-21 08:45:21 +01:00
ptrace.c arm: use generic ptrace_resume code 2010-03-12 15:52:38 -08:00
ptrace.h arm: use generic ptrace_resume code 2010-03-12 15:52:38 -08:00
relocate_kernel.S [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
return_address.c [ARM] 5613/1: implement CALLER_ADDRESSx 2009-07-21 17:21:28 +01:00
setup.c Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-03-01 09:15:15 -08:00
signal.c ARM: 6051/1: VFP: preserve the HW context when calling signal handlers 2010-04-14 11:11:30 +01:00
signal.h ARM: Fix signal restart issues with NX and OABI compat 2009-10-25 15:39:37 +00:00
smp_scu.c Check whether the SCU was already initialised 2009-11-05 10:10:36 +00:00
smp_twd.c ARM: 6125/1: ARM TWD: move TWD registers to common header 2010-05-12 11:18:13 +01:00
smp.c Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
stacktrace.c [ARM] 5613/1: implement CALLER_ADDRESSx 2009-07-21 17:21:28 +01:00
sys_arm.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sys_oabi-compat.c Add generic sys_ipc wrapper 2010-03-12 15:52:32 -08:00
tcm.c ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3 2009-09-15 22:11:05 +01:00
tcm.h ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3 2009-09-15 22:11:05 +01:00
thumbee.c Fix the teehbr_read function prototype 2008-11-10 14:14:11 +00:00
time.c ARM: convert arm to arch_gettimeoffset() 2010-03-24 08:08:58 +00:00
traps.c ARM: add notify_die() support 2010-02-15 21:39:14 +00:00
unwind.c ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted 2010-03-07 10:22:00 +00:00
vmlinux.lds.S ARM: 5880/1: arm: use generic infrastructure for early params 2010-02-15 21:39:13 +00:00
xscale-cp0.c ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread() 2009-12-18 14:53:41 +00:00