From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from e1.ny.us.ibm.com ([32.97.182.141]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TWSJE-0005zr-F5 for kexec@lists.infradead.org; Thu, 08 Nov 2012 13:38:17 +0000 Received: from /spool/local by e1.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 8 Nov 2012 08:38:14 -0500 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id 87A0638C804F for ; Thu, 8 Nov 2012 08:38:10 -0500 (EST) Received: from d01av03.pok.ibm.com (d01av03.pok.ibm.com [9.56.224.217]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id qA8DcA0R217310 for ; Thu, 8 Nov 2012 08:38:10 -0500 Received: from d01av03.pok.ibm.com (loopback [127.0.0.1]) by d01av03.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id qA8Dc9RP000966 for ; Thu, 8 Nov 2012 11:38:09 -0200 Subject: [PATCH v2 1/7] Initialize and setup eppic From: Aravinda Prasad Date: Thu, 08 Nov 2012 19:08:04 +0530 Message-ID: <20121108133804.28410.99166.stgit@aravinda> In-Reply-To: <20121108133554.28410.99763.stgit@aravinda> References: <20121108133554.28410.99763.stgit@aravinda> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: kumagai-atsushi@mxc.nes.nec.co.jp, kexec@lists.infradead.org Cc: LChouinard@s2sys.com, mahesh@linux.vnet.ibm.com, tachibana@mxm.nes.nec.co.jp, ananth@in.ibm.com, buendgen@de.ibm.com This patch contains routines which initialize eppic and register call back function which will be called whenever a new eppic macro is loaded using eppic_load() API. The registered call back function executes the eppic macro as soon as it is loaded. The -ltinfo is included in LIBS in the Makefile, because eppic currently calls few functions in libtinfo and the compiler complains about it, if not included. I think the paths where libeppic calls libtinfo functions are not exercised by makedumpfile. Including -ltinfo will increase the size of makedumpfile static version TODO: - Check out a way to get rid of -ltinfo Signed-off-by: Aravinda Prasad --- Makefile | 7 ++++ extension_eppic.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++ extension_eppic.h | 23 +++++++++++++++ 3 files changed, 114 insertions(+), 0 deletions(-) create mode 100644 extension_eppic.c create mode 100644 extension_eppic.h diff --git a/Makefile b/Makefile index d5fc09e..3ac8e63 100644 --- a/Makefile +++ b/Makefile @@ -55,6 +55,13 @@ LIBS := -llzo2 $(LIBS) CFLAGS += -DUSELZO endif +ifeq ($(EPPIC), on) +LIBS := -leppic -ltinfo $(LIBS) +CFLAGS += -DEPPIC +SRC_PART += extension_eppic.c +OBJ_PART += extension_eppic.o +endif + all: makedumpfile $(OBJ_PART): $(SRC_PART) diff --git a/extension_eppic.c b/extension_eppic.c new file mode 100644 index 0000000..fc47b1f --- /dev/null +++ b/extension_eppic.c @@ -0,0 +1,84 @@ +/* + * extension_eppic.c + * + * Created by: Aravinda Prasad + * + * Copyright (C) 2012 IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include +#include +#include +#include + +#include "extension_eppic.h" + +/* + * Most of the functions included in this file performs similar + * functionality as in the applications/crash/eppic.c file part of + * eppic, but uses DWARF instead of gdb. Few of the functions are + * reused directly which are acknowledged in the comment before the + * function. + */ + +/* + * This is the call back function called when a new eppic macro is + * loaded. This will execute the loaded eppic macro. + * + * "fname" is considered as the entry point of an eppic macro only if + * the following functions are defined: + * + * fname_help() + * fname_usage() + * + * These functions have no relevance in makedumpfile context as + * makedumpfile automatically executes the eppic macro by calling the + * entry point and user will not have any option to execute the usage + * or help functions. However they are required to identify the entry + * points in the eppic macro. + */ +void +reg_callback(char *name, int load) +{ + char fname[MAX_SYMNAMELEN]; + + /* Nothing to process for unload request */ + if (!load) + return; + + snprintf(fname, sizeof(fname), "%s_help", name); + if (eppic_chkfname(fname, 0)) { + snprintf(fname, sizeof(fname), "%s_usage", name); + if (eppic_chkfname(fname, 0)) + eppic_cmd(name, NULL, 0); + } + return; +} + + +/* Initialize eppic */ +int +eppic_init() +{ + if (eppic_open() >= 0) { + + /* Register call back functions */ + eppic_apiset(NULL, 3, sizeof(long), 0); + + /* set the new function callback */ + eppic_setcallback(reg_callback); + + return 0; + } + return 1; +} + diff --git a/extension_eppic.h b/extension_eppic.h new file mode 100644 index 0000000..ca74ce4 --- /dev/null +++ b/extension_eppic.h @@ -0,0 +1,23 @@ +/* + * extension_eppic.h + * + * Created by: Aravinda Prasad + * + * Copyright (C) 2012 IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef _EXTENSION_EPPIC_H +#define _EXTENSION_EPPIC_H + +#include "eppic_api.h" + +#endif /* _EXTENSION_EPPIC_H */ _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec