Commit 67ddb405 authored by David Howells's avatar David Howells
Browse files

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: default avatarDavid Howells <dhowells@redhat.com>
parent 7f386ac3

arch/mn10300/Kconfig

+3 −3
Original line number Diff line number Diff line
@@ -401,8 +401,8 @@ comment "[!] NOTE: A lower number/level indicates a higher priority (0 is highes 
comment "____Non-maskable interrupt levels____"

comment "The following must be set to a higher priority than local_irq_disable() and on-chip serial"



config GDBSTUB_IRQ_LEVEL

	int "GDBSTUB interrupt priority"

config DEBUGGER_IRQ_LEVEL

	int "DEBUGGER interrupt priority"

	depends on KERNEL_DEBUGGER

	range 0 1 if LINUX_CLI_LEVEL = 2

	range 0 2 if LINUX_CLI_LEVEL = 3
@@ -437,7 +437,7 @@ config LINUX_CLI_LEVEL 
	  EPSW.IM from 7.  Any interrupt is permitted for which the level is

	  lower than EPSW.IM.



	  Certain interrupts, such as GDBSTUB and virtual MN10300 on-chip

	  Certain interrupts, such as DEBUGGER and virtual MN10300 on-chip

	  serial DMA interrupts are allowed to interrupt normal disabled

	  sections.

arch/mn10300/include/asm/debugger.h

+15 −0
Original line number Diff line number Diff line
@@ -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 @@ static inline void debugger_local_cache_flushinv_one(u8 *addr) {} 


#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 */

arch/mn10300/include/asm/fpu.h

+0 −2
Original line number Diff line number Diff line
@@ -55,7 +55,6 @@ static inline void clear_using_fpu(struct task_struct *tsk) 


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 @@ static inline void flush_fpu(void) 


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;

arch/mn10300/include/asm/irqflags.h

+1 −1
Original line number Diff line number Diff line
@@ -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

arch/mn10300/include/asm/smp.h

+2 −1
Original line number Diff line number Diff line
@@ -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