MN10300: Create generic kernel debugger hooks
Create generic kernel debugger hooks in the MN10300 arch and make gdbstub use
them. This is a preparation for KGDB support.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/arch/mn10300/include/asm/debugger.h b/arch/mn10300/include/asm/debugger.h
index 4517f83..e1d3b08 100644
--- a/arch/mn10300/include/asm/debugger.h
+++ b/arch/mn10300/include/asm/debugger.h
@@ -14,6 +14,9 @@
#if defined(CONFIG_KERNEL_DEBUGGER)
+extern int debugger_intercept(enum exception_code, int, int, struct pt_regs *);
+extern int at_debugger_breakpoint(struct pt_regs *);
+
#ifndef CONFIG_MN10300_DEBUGGER_CACHE_NO_FLUSH
extern void debugger_local_cache_flushinv(void);
extern void debugger_local_cache_flushinv_one(u8 *);
@@ -24,5 +27,17 @@
#else /* CONFIG_KERNEL_DEBUGGER */
+static inline int debugger_intercept(enum exception_code excep,
+ int signo, int si_code,
+ struct pt_regs *regs)
+{
+ return 0;
+}
+
+static inline int at_debugger_breakpoint(struct pt_regs *regs)
+{
+ return 0;
+}
+
#endif /* CONFIG_KERNEL_DEBUGGER */
#endif /* _ASM_DEBUGGER_H */
diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h
index b7625de..738ff72 100644
--- a/arch/mn10300/include/asm/fpu.h
+++ b/arch/mn10300/include/asm/fpu.h
@@ -55,7 +55,6 @@
extern asmlinkage void fpu_kill_state(struct task_struct *);
extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code);
-extern asmlinkage void fpu_invalid_op(struct pt_regs *, enum exception_code);
extern asmlinkage void fpu_init_state(void);
extern asmlinkage void fpu_save(struct fpu_state_struct *);
extern int fpu_setup_sigcontext(struct fpucontext *buf);
@@ -113,7 +112,6 @@
extern asmlinkage
void unexpected_fpu_exception(struct pt_regs *, enum exception_code);
-#define fpu_invalid_op unexpected_fpu_exception
#define fpu_exception unexpected_fpu_exception
struct task_struct;
diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h
index 7a7ae12..678f68d 100644
--- a/arch/mn10300/include/asm/irqflags.h
+++ b/arch/mn10300/include/asm/irqflags.h
@@ -20,7 +20,7 @@
/*
* interrupt control
* - "disabled": run in IM1/2
- * - level 0 - GDB stub
+ * - level 0 - kernel debugger
* - level 1 - virtual serial DMA (if present)
* - level 5 - normal interrupt priority
* - level 6 - timer interrupt
diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h
index a3930e4..e3d13a8 100644
--- a/arch/mn10300/include/asm/smp.h
+++ b/arch/mn10300/include/asm/smp.h
@@ -34,7 +34,7 @@
#define LOCAL_TIMER_IPI 193
#define FLUSH_CACHE_IPI 194
#define CALL_FUNCTION_NMI_IPI 195
-#define GDB_NMI_IPI 196
+#define DEBUGGER_NMI_IPI 196
#define SMP_BOOT_IRQ 195
@@ -43,6 +43,7 @@
#define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4
#define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0
#define SMP_BOOT_GxICR_LV GxICR_LEVEL_0
+#define DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL
#define TIME_OUT_COUNT_BOOT_IPI 100
#define DELAY_TIME_BOOT_IPI 75000