/* $Id: kdebug.h,v 1.11 2000/06/04 06:23:53 anton Exp $ * kdebug.h:  Defines and definitions for debugging the Linux kernel *            under various kernel debuggers. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */#ifndef _SPARC_KDEBUG_H#define _SPARC_KDEBUG_H #include <asm/openprom.h>#include <asm/vaddrs.h> /* Breakpoints are enter through trap table entry 126.  So in sparc assembly * if you want to drop into the debugger you do: * * t DEBUG_BP_TRAP */ #define DEBUG_BP_TRAP     126 #ifndef __ASSEMBLY__/* The debug vector is passed in %o1 at boot time.  It is a pointer to * a structure in the debuggers address space.  Here is its format. */ typedef unsigned int (*debugger_funct)(void); struct kernel_debug {	/* First the entry point into the debugger.  You jump here	 * to give control over to the debugger.	 */	unsigned long kdebug_entry;	unsigned long kdebug_trapme;   /* Figure out later... */	/* The following is the number of pages that the debugger has	 * taken from to total pool.	 */	unsigned long *kdebug_stolen_pages;	/* Ok, after you remap yourself and/or change the trap table	 * from what you were left with at boot time you have to call	 * this synchronization function so the debugger can check out	 * what you have done.	 */	debugger_funct teach_debugger;}; /* I think that is it... */ extern struct kernel_debug *linux_dbvec; /* Use this macro in C-code to enter the debugger. */static inline void sp_enter_debugger(void){	__asm__ __volatile__("jmpl %0, %%o7\n\t"			     "nop\n\t" : :			     "r" (linux_dbvec) : "o7", "memory");} #define SP_ENTER_DEBUGGER do { \	     if((linux_dbvec!=0) && ((*(short *)linux_dbvec)!=-1)) \	       sp_enter_debugger(); \		       } while(0) #endif /* !(__ASSEMBLY__) */ /* Some nice offset defines for assembler code. */#define KDEBUG_ENTRY_OFF    0x0#define KDEBUG_DUNNO_OFF    0x4#define KDEBUG_DUNNO2_OFF   0x8#define KDEBUG_TEACH_OFF    0xc #endif /* !(_SPARC_KDEBUG_H) */