[lcrash]Kernel2.6.21 arm対応

追記：リンク先が変わっています(2017年ごろ)

Re: [lkcd-devel] Re: 7.X.X lkcdutils cleanup and reorg | Linux Kernel Crash Dumps

lcrashのKernel2.6.21対応全般については以下を参照ください。

[lcrash]Kernel2.6.21対応

IT関連の技術的なことや体験したことを忘備録として残していきます。

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~~http://sourceforge.net/mailarchive/message.php?msg_id=002801c519c8%2493b4f230%246401a8c0%40PCTMORANO~~

メーリングリストより抜粋。

[lkcd-devel] 7.X.X lkcdutils cleanup and reorg  Tom Morano <tjm@sg...>
 [lkcd-devel] Re: 7.X.X lkcdutils cleanup and reorg
From: Tom Morano <tjm@sg...> - 2005-02-23 01:39
I haven't heard any negative feedback on these proposed changes, so I've
checked them into the 7.X.X tree. These changes did undo a change made by
Michael Holzheu on 2/22. That's because the whole way that dump architecture
is determined at startup has been changed. The changes that Michale made
weren't relevant any more (and overlapped with my changes). I have done a
fair amount of testing with the architectures and dumps I have at my
disposal. I mainly work with ia64 architecture systems (as hosts) and have
tested these changes against ia64 and s390 dumps (big vs. little endian,
32-bit and 64-bit). If anybody has any recent (small) dumps of other
architectures, I would be happy to test them out too.
Thanks,
Tom
----- Original Message -----
From: "Tom Morano" <tjm@sg...>
To: "lkcd-devl" <lkcd-devel@li...>; "Tom Morano"
<tjm@sg...>
Sent: Wednesday, February 16, 2005 6:31 PM
Subject: 7.X.X lkcdutils cleanup and reorg
> Attached is a set of patches that contain some major cleanup of the
> 7.X.X lkcdutils source tree (beyond what has already been done with the
> rearranging of directories and the lkcdutils source tree). The main
> focus of this cleanup effort was to simplify the way lkcdutils starts
> up and initializes cross-arch support. There was a somewhat convoluted
> relationship between many of the start-up routines. For example, in
> order to set up the common dump_header, you needed to know the dump
> architecture. To determine the dump architecture, you needed to read in
> the dump_header form disk. I have rearranged things so that the
> dump_header only needs to be read in once. I have also standardized
> access to the dump_header and dump_header_asm structs. This
> reorganization makes it easier to support certain older dump formats.
> It also provides a better format for handling changes to the
> dump_header as we move forward with the 7.X.X development branch.
> Please review these patches and let me know of any issues you see.
> Please note that these patches apply to the 7.X.X tree only.

以下、修正コード抜き出し。

diff -Naur -x CVS -x '*.gz' -Naur lkcdutils/lib/libklib/kl_nmlist.c
lkcdutils_reorg/lib/libklib/kl_nmlist.c
> --- lkcdutils/lib/libklib/kl_nmlist.c 2004-12-21 15:26:20.000000000 -0800
> +++ lkcdutils_reorg/lib/libklib/kl_nmlist.c 2005-02-17
16:51:05.655595650 -0800
> @@ -7,7 +7,7 @@
> * Created by Silicon Graphics, Inc.
> * Contributions by IBM, NEC, and others
> *
> - * Copyright (C) 1999 - 2002, 2004 Silicon Graphics, Inc. All rights
reserved.
> + * Copyright (C) 1999 - 2005 Silicon Graphics, Inc. All rights reserved.
> * Copyright (C) 2001, 2002 IBM Deutschland Entwicklung GmbH, IBM
Corporation
> * Copyright 2000 Junichi Nomura, NEC Solutions <j-nomura@ce.jp.nec.com>
> *
> @@ -155,94 +155,57 @@
> command = ELF_C_READ;
>
> elf_fd = elf_begin(fd,command,(Elf*)0);
> - if(!elf_fd) {
> - fprintf(stderr,"check_namelist_format: elf_begin
failed\n");
> - exit(1);
> - }
> -
> - /* Get the header depending on dump arch(??) */
> - switch(KL_ARCH) {
> -
> - case KL_ARCH_I386:
> - case KL_ARCH_S390: {
> - if(!(ptr32_eheader = elf32_getehdr(elf_fd))) {
> - fprintf(stderr,"check_namelist_format: "
> - "error while reading header\n");
> - exit(1);
> - }
> - break;
> - }
> -
> - case KL_ARCH_IA64:
> - case KL_ARCH_IA64_SN2:
> - case KL_ARCH_IA64_DIG:
> - case KL_ARCH_IA64_HPSIM:
> - case KL_ARCH_IA64_HPZX1:
> - case KL_ARCH_S390X:
> - case KL_ARCH_X86_64: {
> - if(!(ptr64_eheader = elf64_getehdr(elf_fd))) {
> - fprintf(stderr,"check_namelist_format: "
> - "error while reading header\n");
> - exit(1);
> - }
> - break;
> - }
> + if(!elf_fd) {
> + fprintf(stderr,"check_namelist_format: elf_begin failed\n");
> + exit(1);
> }
> -
> -
> - /* For each section, check its name */
> - while((ptr_section=elf_nextscn(elf_fd, ptr_section))) {
>
> - switch(KL_ARCH) {
> -
> - case KL_ARCH_I386:
> - case KL_ARCH_S390: {
> - if(!(ptr32_sheader = elf32_getshdr(ptr_section))) {
> - fprintf(stderr,"check_namelist_format: "
> - "error while reading section headers\n");
> - exit(1);
> - }
> -
> - name = elf_strptr(elf_fd, ptr32_eheader->e_shstrndx,
> - (size_t)(ptr32_sheader->sh_name));
> -
> - break;
> - }
> -
> - case KL_ARCH_IA64:
> - case KL_ARCH_IA64_SN2:
> - case KL_ARCH_IA64_DIG:
> - case KL_ARCH_IA64_HPSIM:
> - case KL_ARCH_IA64_HPZX1:
> - case KL_ARCH_S390X:
> - case KL_ARCH_X86_64: {
> -
> - if(!(ptr64_sheader = elf64_getshdr(ptr_section))) {
> - fprintf(stderr,"check_namelist_format: "
> - "error while reading section headers\n");
> - exit(1);
> - }
> -
> - name = elf_strptr(elf_fd, ptr64_eheader->e_shstrndx,
> - (size_t)(ptr64_sheader->sh_name));
> -
> - break;
> - }
> -
> - } /* end of switch statement */
> -
> -
> - /* .debug_info & .stab are specific to dwarf and
> - stab debug formats */
> -
> - if(strcmp(name,".debug_info") == 0) {
> - namelist_opns= &dwarf2_opns;
> - debug_format = DBG_DWARF2;
> - return;
> - } else if(strcmp(name,".stab") == 0) {
> - namelist_opns= &stabs_opns;
> - debug_format = DBG_STABS;
> + /* Get the Elf header. Try elf32 first and if that doesn't work,
> + * try elf64 (if that doesn't work, return an error).
> + */
> + if(!(ptr32_eheader = elf32_getehdr(elf_fd))) {
> + if(!(ptr64_eheader = elf64_getehdr(elf_fd))) {
> + fprintf(stderr,"check_namelist_format: "
> + "error while reading header\n");
> + exit(1);
> + }
> + }
> +
> + /* Check to see if type information is in Dwarf2 or stabs format
> + * by checking each section for its name. .debug_info is specific
> + * to Dwarf2 debug format and .stab is specific to stab debug
> + * format.
> + */
> + while((ptr_section = elf_nextscn(elf_fd, ptr_section))) {
> +
> + if (ptr32_eheader) {
> + if(!(ptr32_sheader = elf32_getshdr(ptr_section))) {
> + fprintf(stderr,"check_namelist_format: "
> + "error while reading section "
> + "headers\n");
> + exit(1);
> + }
> + name = elf_strptr(elf_fd, ptr32_eheader->e_shstrndx,
> + (size_t)(ptr32_sheader->sh_name));
> + } else { /* ptr64_eheader */
> + if(!(ptr64_sheader = elf64_getshdr(ptr_section))) {
> + fprintf(stderr,"check_namelist_format: "
> + "error while reading section "
> + "headers\n");
> + exit(1);
> + }
> + name = elf_strptr(elf_fd, ptr64_eheader->e_shstrndx,
> + (size_t)(ptr64_sheader->sh_name));
> + }
> +
> + if(strcmp(name,".debug_info") == 0) {
> + namelist_opns= &dwarf2_opns;
> + debug_format = DBG_DWARF2;
> return;
> - }
> + } else if(strcmp(name,".stab") == 0) {
> + namelist_opns= &stabs_opns;
> + debug_format = DBG_STABS;
> + return;
> + }
> } /* end of while loop */
> }
>