Import of Linux/MIPS 2.1.36

1 files changed, 81 insertions, 0 deletions

diff --git a/include/asm-sparc64/kdebug.h b/include/asm-sparc64/kdebug.h
new file mode 100644
index 000000000..fe3055836
--- /dev/null
+++ b/include/asm-sparc64/kdebug.h
@@ -0,0 +1,81 @@
+/* $Id: kdebug.h,v 1.2 1997/04/04 00:50:21 davem 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 _SPARC64_KDEBUG_H
+#define _SPARC64_KDEBUG_H
+
+#include <asm/openprom.h>
+
+/* XXX This needs to all be fixed for Ultra/V9 -DaveM */
+
+/* The debugger lives in 1MB of virtual address space right underneath
+ * the boot prom.
+ */
+
+#define DEBUG_FIRSTVADDR       0xffc00000
+#define DEBUG_LASTVADDR        LINUX_OPPROM_BEGVM
+
+/* 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
+
+/* ugh... */
+#define TRAP_TRACE(reg1, reg2) \
+     
+
+#endif /* !(_SPARC64_KDEBUG_H) */