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authorJason Wessel <jason.wessel@windriver.com>2010-04-02 11:48:03 -0500
committerJason Wessel <jason.wessel@windriver.com>2010-05-20 21:04:19 -0500
commit53197fc49549240f6c6a963b2713a4cd9517964b (patch)
tree5a89c338ef8acd188e4aa1503370a4e928c33edd /kernel/debug/debug_core.h
parentc433820971ffa854feda6adc17f5f24201354f11 (diff)
Separate the gdbstub from the debug core
Split the former kernel/kgdb.c into debug_core.c which contains the kernel debugger exception logic and to the gdbstub.c which contains the logic for allowing gdb to talk to the debug core. This also created a private include file called debug_core.h which contains all the definitions to glue the debug_core to any other debugger connections. CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel/debug/debug_core.h')
-rw-r--r--kernel/debug/debug_core.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/kernel/debug/debug_core.h b/kernel/debug/debug_core.h
new file mode 100644
index 00000000000..db554f9be51
--- /dev/null
+++ b/kernel/debug/debug_core.h
@@ -0,0 +1,55 @@
+/*
+ * Created by: Jason Wessel <jason.wessel@windriver.com>
+ *
+ * Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef _DEBUG_CORE_H_
+#define _DEBUG_CORE_H_
+/*
+ * These are the private implementation headers between the kernel
+ * debugger core and the debugger front end code.
+ */
+
+/* kernel debug core data structures */
+struct kgdb_state {
+ int ex_vector;
+ int signo;
+ int err_code;
+ int cpu;
+ int pass_exception;
+ unsigned long thr_query;
+ unsigned long threadid;
+ long kgdb_usethreadid;
+ struct pt_regs *linux_regs;
+};
+
+/* Exception state values */
+#define DCPU_WANT_MASTER 0x1 /* Waiting to become a master kgdb cpu */
+#define DCPU_NEXT_MASTER 0x2 /* Transition from one master cpu to another */
+#define DCPU_IS_SLAVE 0x4 /* Slave cpu enter exception */
+#define DCPU_SSTEP 0x8 /* CPU is single stepping */
+
+struct debuggerinfo_struct {
+ void *debuggerinfo;
+ struct task_struct *task;
+ int exception_state;
+};
+
+extern struct debuggerinfo_struct kgdb_info[];
+
+/* kernel debug core break point routines */
+extern int dbg_remove_all_break(void);
+extern int dbg_set_sw_break(unsigned long addr);
+extern int dbg_remove_sw_break(unsigned long addr);
+extern int dbg_activate_sw_breakpoints(void);
+
+/* gdbstub interface functions */
+extern int gdb_serial_stub(struct kgdb_state *ks);
+extern void gdbstub_msg_write(const char *s, int len);
+
+#endif /* _DEBUG_CORE_H_ */