Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757196AbYGHMm1 (ORCPT ); Tue, 8 Jul 2008 08:42:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753250AbYGHMmK (ORCPT ); Tue, 8 Jul 2008 08:42:10 -0400 Received: from 238.225.broadband7.iol.cz ([88.102.225.238]:27518 "EHLO monstr.eu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753283AbYGHMmI (ORCPT ); Tue, 8 Jul 2008 08:42:08 -0400 From: monstr@monstr.eu To: linux-kernel@vger.kernel.org Cc: monstr@seznam.cz, arnd@arndb.de, linux-arch@vger.kernel.org, stephen.neuendorffer@xilinx.com, John.Linn@xilinx.com, john.williams@petalogix.com, matthew@wil.cx, will.newton@gmail.com, drepper@redhat.com, microblaze-uclinux@itee.uq.edu.au, grant.likely@secretlab.ca, vapier.adi@gmail.com, alan@lxorguk.ukuu.org.uk, hpa@zytor.com, lethal@linux-sh.org, florian@openwrt.org, Michal Simek Subject: [PATCH 28/58] microblaze_v5: traps support Date: Tue, 8 Jul 2008 13:59:28 +0200 Message-Id: <04b0b222b84ba9cfe2507a9081f4d715f2323733.1215517976.git.monstr@monstr.eu> X-Mailer: git-send-email 1.5.4.GIT In-Reply-To: <9b48e9d85b4a5a6dcffce8eef62b232b6bfac8e8.1215517976.git.monstr@monstr.eu> References: <1215518398-5057-1-git-send-email-monstr@monstr.eu> <80a2e46f2fb93812ab12bf79c703e8e2d6b0faa0.1215517976.git.monstr@monstr.eu> <58f35f498bac29e7105c589c06567e86c5a42dd5.1215517976.git.monstr@monstr.eu> <810775b1bb678003923039726a9153ee34fb67b4.1215517976.git.monstr@monstr.eu> <2a24e5bc2cfbd349613ef10c716a28f04ce24a9f.1215517976.git.monstr@monstr.eu> <3171c5cf21eefc79665165f4a14bc5b68dd03f95.1215517976.git.monstr@monstr.eu> <9be4eff2f4d015023c453eaec3b3473a44380491.1215517976.git.monstr@monstr.eu> <4409daf2ac356e902a8f091bb5908eb8a90218bc.1215517976.git.monstr@monstr.eu> <1f9a1f345caa749cb630cf85f95f217366395069.1215517976.git.monstr@monstr.eu> <59d7e0a5f38b8d38f01f357a071fc93eed36f3a8.1215517976.git.monstr@monstr.eu> <143afcf84af583ab66da7e8acfc9eb03b7f3eaa0.1215517976.git.monstr@monstr.eu> <2aa1ac7891af57959237aae3addf4bbe607f55d7.1215517976.git.monstr@monstr.eu> <875ba2708f6cd3c585e4d965142e2feb07c39a0e.1215517976.git.monstr@monstr.eu> <5da1d8f069f18f14faee8c4bff736791179ef6f1.1215517976.git.monstr@monstr.eu> <9a32168fe72b772f301216a7090670474af78e49.1215517976.git.monstr@monstr.eu> <7ada4bceefc1806a2c8ef73676b7aabd8ac1cad6.1215517976.git.monstr@monstr.eu> <701c1dac442ac09f5010cb5356cc1a12bb0abfe1.1215517976.git.monstr@monstr.eu> <9b48e9d85b4a5a6dcffce8eef62b232b6bfac8e8.1215517976.git.monstr@monstr.eu> In-Reply-To: <80a2e46f2fb93812ab12bf79c703e8e2d6b0faa0.1215517976.git.monstr@monstr.eu> References: <80a2e46f2fb93812ab12bf79c703e8e2d6b0faa0.1215517976.git.monstr@monstr.eu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3155 Lines: 130 From: Michal Simek Acked-by: Stephen Neuendorffer Signed-off-by: Michal Simek --- arch/microblaze/kernel/traps.c | 107 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 107 insertions(+), 0 deletions(-) create mode 100644 arch/microblaze/kernel/traps.c diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c new file mode 100644 index 0000000..876c8e1 --- /dev/null +++ b/arch/microblaze/kernel/traps.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include +#include +#include +#include +#include + +#include +#include + +void trap_init(void) +{ + initialize_exception_handlers(); + __enable_hw_exceptions(); +} + +void __bad_xchg(volatile void *ptr, int size) +{ + printk(KERN_INFO "xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n", + __builtin_return_address(0), ptr, size); + BUG(); +} +EXPORT_SYMBOL(__bad_xchg); + +/* x86 has syscall for setting the value */ +int kstack_depth_to_print = 24; + +static int __init kstack_setup(char *s) +{ + kstack_depth_to_print = simple_strtoul(s, NULL, 0); + + return 1; +} +__setup("kstack=", kstack_setup); + +void show_trace(struct task_struct *task, unsigned long *stack) +{ + unsigned long addr; + + if (!stack) + stack = (unsigned long *)&stack; + + printk(KERN_NOTICE "Call Trace: "); +#ifdef CONFIG_KALLSYMS + printk(KERN_NOTICE "\n"); +#endif + while (!kstack_end(stack)) { + addr = *stack++; + /* + * If the address is either in the text segment of the + * kernel, or in the region which contains vmalloc'ed + * memory, it *may* be the address of a calling + * routine; if so, print it so that someone tracing + * down the cause of the crash will be able to figure + * out the call path that was taken. + */ + if (kernel_text_address(addr)) + print_ip_sym(addr); + } + printk(KERN_NOTICE "\n"); + + if (!task) + task = current; + + debug_show_held_locks(task); +} + +void show_stack(struct task_struct *task, unsigned long *sp) +{ + unsigned long *stack; + int i; + + if (sp == NULL) { + if (task) + sp = (unsigned long *) ((struct thread_info *) + (task->stack))->cpu_context.r1; + else + sp = (unsigned long *)&sp; + } + + stack = sp; + + printk(KERN_INFO "\nStack:\n "); + + for (i = 0; i < kstack_depth_to_print; i++) { + if (kstack_end(sp)) + break; + if (i && ((i % 8) == 0)) + printk("\n "); + printk("%08lx ", *sp++); + } + printk("\n"); + show_trace(task, stack); +} + +void dump_stack(void) +{ + show_stack(NULL, NULL); +} +EXPORT_SYMBOL(dump_stack); -- 1.5.4.GIT -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/