1 files changed, 69 insertions, 0 deletions

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 <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. */
+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) */