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This patch adds the ARCH=arm specific a kgdb backend, originally written by Deepak Saxena <dsaxena@plexity.net> and George Davis <gdavis@mvista.com>. Geoff Levand <geoffrey.levand@am.sony.com>, Nicolas Pitre, Manish Lachwani, and Jason Wessel have contributed various fixups here as well. The KGDB patch makes one change to the core ARM architecture such that the traps are initialized early for use with the debugger or other subsystems. [ mingo@elte.hu: small cleanups. ] [ ben-linux@fluff.org: fixed early_trap_init ] Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Deepak Saxena <dsaxena@plexity.net>
30 lines
639 B
C
30 lines
639 B
C
#ifndef _ASMARM_TRAP_H
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#define _ASMARM_TRAP_H
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#include <linux/list.h>
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struct undef_hook {
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struct list_head node;
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u32 instr_mask;
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u32 instr_val;
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u32 cpsr_mask;
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u32 cpsr_val;
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int (*fn)(struct pt_regs *regs, unsigned int instr);
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};
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void register_undef_hook(struct undef_hook *hook);
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void unregister_undef_hook(struct undef_hook *hook);
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static inline int in_exception_text(unsigned long ptr)
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{
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extern char __exception_text_start[];
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extern char __exception_text_end[];
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return ptr >= (unsigned long)&__exception_text_start &&
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ptr < (unsigned long)&__exception_text_end;
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}
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extern void __init early_trap_init(void);
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#endif
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