patch-2.3.99-pre6 linux/arch/ia64/kdb/kdb_bt.c

• Lines: 105
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.99-pre5/linux/arch/ia64/kdb/kdb_bt.c
• Orig date: Thu Feb 10 17:11:03 2000

diff -u --recursive --new-file v2.3.99-pre5/linux/arch/ia64/kdb/kdb_bt.c linux/arch/ia64/kdb/kdb_bt.c
@@ -1,104 +0,0 @@
-/**
- * Minimalist Kernel Debugger 
- * Machine dependent stack traceback code for IA-64.
- *
- * Copyright (C) 1999 Goutham Rao <goutham.rao@intel.com>
- * Copyright (C) 1999 Sreenivas Subramoney <sreenivas.subramoney@intel.com>
- * Intel Corporation, August 1999.
- * Copyright (C) 1999 Hewlett-Packard Co
- * Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * 99/12/03 D. Mosberger	Reimplemented based on <asm-ia64/unwind.h> API.
- * 99/12/06 D. Mosberger	Added support for backtracing other processes.
- */
-
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/kdb.h>
-#include <asm/system.h>
-#include <asm/current.h>
-#include <asm/kdbsupport.h>
-
-/*
- * Minimal stack back trace functionality.
- */
-int
-kdb_bt (int argc, const char **argv, const char **envp, struct pt_regs *regs)
-{
-	struct task_struct *task = current;
-	struct ia64_frame_info info;
-	char *name;
-	int diag;
-
-	if (strcmp(argv[0], "btp") == 0) {
-		unsigned long pid;
-
-		diag = kdbgetularg(argv[1], &pid);
-		if (diag)
-			return diag;
-
-		task = find_task_by_pid(pid);
-		if (!task) {
-			kdb_printf("No process with pid == %d found\n", pid);
-			return 0;
-		}
-		regs = ia64_task_regs(task);
-	} else if (argc) {
-		kdb_printf("bt <address> is unsupported for IA-64\n");
-		return 0;
-	}
-
-	if (task == current) {
-		/*
-		 * Upon entering kdb, the stack frame looks like this:
-		 *
-		 *	+---------------------+
-		 *	|   struct pt_regs    |
-		 *	+---------------------+
-		 *	|		      |
-		 *	|   kernel stack      |
-		 *	|		      |
-		 *	+=====================+ <--- top of stack upon entering kdb
-		 *	|   struct pt_regs    |
-		 *	+---------------------+
-		 *	| struct switch_stack |
-		 *	+---------------------+
-		 */
-		if (user_mode(regs)) {
-			/* We are not implementing stack backtrace from user mode code */
-			kdb_printf ("Not in Kernel\n");
-			return 0;
-		}
-		ia64_unwind_init_from_current(&info, regs);
-	} else {
-		/*
-		 * For a blocked task, the stack frame looks like this:
-		 *
-		 *	+---------------------+
-		 *	|   struct pt_regs    |
-		 *	+---------------------+
-		 *	|		      |
-		 *	|   kernel stack      |
-		 *	|		      |
-		 *	+---------------------+
-		 *	| struct switch_stack |
-		 *	+=====================+ <--- task->thread.ksp
-		 */
-		ia64_unwind_init_from_blocked_task(&info, task);
-	}
-
-	kdb_printf("Ret Address           Reg Stack base       Name\n\n") ;
-	do {
-		unsigned long ip = ia64_unwind_get_ip(&info);
-
-		name = kdbnearsym(ip);
-		if (!name) {
-			kdb_printf("Interrupt\n");
-			return 0;
-		}
-		kdb_printf("0x%016lx: [0x%016lx] %s\n", ip, ia64_unwind_get_bsp(&info), name);
-	} while (ia64_unwind_to_previous_frame(&info) >= 0);
-	return 0;
-}