From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc/kdebug.h | 69 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 include/asm-sparc/kdebug.h (limited to 'include/asm-sparc/kdebug.h') diff --git a/include/asm-sparc/kdebug.h b/include/asm-sparc/kdebug.h new file mode 100644 index 000000000000..3ea4916635ee --- /dev/null +++ b/include/asm-sparc/kdebug.h @@ -0,0 +1,69 @@ +/* $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 +#include + +/* 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. */ +extern __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) */ -- cgit v1.2.3-59-g8ed1b