From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31056 invoked by alias); 10 May 2012 15:18:01 -0000 Received: (qmail 30880 invoked by uid 22791); 10 May 2012 15:17:59 -0000 X-SWARE-Spam-Status: No, hits=-7.7 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mga14.intel.com (HELO mga14.intel.com) (143.182.124.37) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 10 May 2012 15:17:45 +0000 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga102.ch.intel.com with ESMTP; 10 May 2012 08:16:24 -0700 X-ExtLoop1: 1 Received: from swsutil001.isw.intel.com ([10.237.237.11]) by AZSMGA002.ch.intel.com with ESMTP; 10 May 2012 08:16:22 -0700 Received: from ulslx001.iul.intel.com (ulslx001.iul.intel.com [172.28.207.63]) by swsutil001.isw.intel.com (8.13.6/8.13.6/MailSET/Hub) with ESMTP id q4AFGMZ6021813; Thu, 10 May 2012 16:16:22 +0100 Received: from ulslx001.iul.intel.com (localhost [127.0.0.1]) by ulslx001.iul.intel.com with ESMTP id q4AFGLUt025510; Thu, 10 May 2012 17:16:21 +0200 Received: (from mmetzger@localhost) by ulslx001.iul.intel.com with id q4AFGLlY025506; Thu, 10 May 2012 17:16:21 +0200 From: markus.t.metzger@intel.com To: gdb-patches@sourceware.org Cc: markus.t.metzger@gmail.com, Markus Metzger Subject: [PATCH 09/16] btrace, linux: add linux native btrace target ops Date: Thu, 10 May 2012 15:18:00 -0000 Message-Id: <1336662810-21937-10-git-send-email-markus.t.metzger@intel.com> In-Reply-To: <1336662810-21937-1-git-send-email-markus.t.metzger@intel.com> References: <1336662810-21937-1-git-send-email-markus.t.metzger@intel.com> X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2012-05/txt/msg00365.txt.bz2 From: Markus Metzger Implement btrace target ops for linux native based on the common linux btrace support. We use a separate file for this to allow sharing between multiple targets (i.e. i386 and x86_64) and to avoid having to guard this for targets that do not support branch tracing. 2012-05-10 Markus Metzger gdb/ * linux-nat-btrace.h: New file * linux-nat-btrace.c: New file --- gdb/linux-nat-btrace.c | 86 ++++++++++++++++++++++++++++++++++++++++++++++++ gdb/linux-nat-btrace.h | 28 +++++++++++++++ 2 files changed, 114 insertions(+), 0 deletions(-) create mode 100644 gdb/linux-nat-btrace.c create mode 100644 gdb/linux-nat-btrace.h diff --git a/gdb/linux-nat-btrace.c b/gdb/linux-nat-btrace.c new file mode 100644 index 0000000..f69fc6f --- /dev/null +++ b/gdb/linux-nat-btrace.c @@ -0,0 +1,86 @@ +/* Branch trace support for GDB, the GNU debugger. + + Copyright (C) 2012 Free Software Foundation, Inc. + + Contributed by Intel Corp. . + + This file is part of GDB. + + 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 3 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. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include "linux-nat-btrace.h" +#include "linux-btrace.h" +#include "btrace.h" +#include "target.h" +#include "gdbarch.h" +#include "arch-utils.h" +#include + +static int +linux_nat_push_btrace_record (struct linux_btrace_block *raw, void *arg) +{ + VEC (btrace_block_s) **btrace = arg; + struct btrace_block *block; + + if (!raw) + return EINVAL; + + if (!btrace) + return EINVAL; + + block = VEC_safe_push (btrace_block_s, *btrace, NULL); + if (!block) + return ENOMEM; + + block->begin = raw->begin; + block->end = raw->end; + + return 0; +} + +static VEC (btrace_block_s) * +linux_nat_read_btrace (struct btrace_target_info *tinfo) +{ + VEC (btrace_block_s) *btrace = NULL; + int errcode; + + if (!tinfo) + { + errno = EINVAL; + return NULL; + } + if (!tinfo->ptr_bits) + { + struct gdbarch *gdbarch = get_current_arch (); + if (gdbarch) + tinfo->ptr_bits = gdbarch_ptr_bit (gdbarch); + } + + errcode = linux_read_btrace (tinfo, linux_nat_push_btrace_record, &btrace); + if (errcode) + warning (_("error while reading branch trace data: %s. " + "trace might be incomplete."), safe_strerror (errcode)); + + return btrace; +} + +void +linux_nat_add_btrace_ops (struct target_ops *t) +{ + t->to_supports_btrace = linux_supports_btrace; + t->to_enable_btrace = linux_enable_btrace; + t->to_disable_btrace = linux_disable_btrace; + t->to_btrace_has_changed = linux_btrace_has_changed; + t->to_read_btrace = linux_nat_read_btrace; +} diff --git a/gdb/linux-nat-btrace.h b/gdb/linux-nat-btrace.h new file mode 100644 index 0000000..cbe9c89 --- /dev/null +++ b/gdb/linux-nat-btrace.h @@ -0,0 +1,28 @@ +/* Branch trace support for GDB, the GNU debugger. + + Copyright (C) 2012 Free Software Foundation, Inc. + + Contributed by Intel Corp. . + + This file is part of GDB. + + 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 3 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. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#ifndef LINUX_NAT_BTRACE_H +#define LINUX_NAT_BTRACE_H + +struct target_ops; +extern void linux_nat_add_btrace_ops (struct target_ops *); + +#endif /* LINUX_NAT_BTRACE_H */ -- 1.7.1