From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17239 invoked by alias); 29 Mar 2007 18:41:44 -0000 Received: (qmail 17212 invoked by uid 22791); 29 Mar 2007 18:41:43 -0000 X-Spam-Check-By: sourceware.org Received: from nile.gnat.com (HELO nile.gnat.com) (205.232.38.5) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 29 Mar 2007 19:41:32 +0100 Received: from localhost (localhost [127.0.0.1]) by filtered-nile.gnat.com (Postfix) with ESMTP id D22A548D109 for ; Thu, 29 Mar 2007 14:41:30 -0400 (EDT) Received: from nile.gnat.com ([127.0.0.1]) by localhost (nile.gnat.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 03456-01-10 for ; Thu, 29 Mar 2007 14:41:30 -0400 (EDT) Received: from joel.gnat.com (S0106000f3d96cb6d.vc.shawcable.net [24.84.195.170]) by nile.gnat.com (Postfix) with ESMTP id 4AD3148CE4B for ; Thu, 29 Mar 2007 14:41:30 -0400 (EDT) Received: by joel.gnat.com (Postfix, from userid 1000) id 76FEBE7B43; Thu, 29 Mar 2007 11:42:44 -0700 (PDT) Date: Thu, 29 Mar 2007 18:41:00 -0000 From: Joel Brobecker To: gdb-patches@sourceware.org Subject: Re: [RFA/DWARF] variables with no DW_AT_location Message-ID: <20070329184244.GB3737@adacore.com> References: <20070328222253.GM3866@adacore.com> <20070329022031.GA17225@caradoc.them.org> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="ew6BAiZeqk4r7MaW" Content-Disposition: inline In-Reply-To: <20070329022031.GA17225@caradoc.them.org> User-Agent: Mutt/1.4.2.2i 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: 2007-03/txt/msg00322.txt.bz2 --ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-length: 551 > Is this patch coming from an older tree? Because dwarf2read doesn't > do that any more. Argh!!! Certain files in my tree had weird tags, and I have no idea why. I made a clean check out of the sources, and now I see: Address of symbol "noloc" is unknown. Thanks for catching this, and sorry for the trouble. Should we still keep the testcase, though? (revised) 2007-03-29 Joel Brobecker * gdb.dwarf2/dw2-noloc.S: New file. * gdb.dwarf2/dw2-noloc.exp: New file. Tested on x86-linux. -- Joel --ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="dw2-noloc.S" Content-length: 5747 /* This testcase is part of GDB, the GNU debugger. Copyright 2007 Free Software Foundation, Inc. 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ .text .Lbegin_text1: .globl func_cu1 .type func_cu1, %function func_cu1: .Lbegin_func_cu1: .int 0 .Lend_func_cu1: .size func_cu1, .-func_cu1 .Lend_text1: /* Debug information */ .section .debug_info .Lcu1_begin: /* CU header */ .4byte .Lcu1_end - .Lcu1_start /* Length of Compilation Unit */ .Lcu1_start: .2byte 2 /* DWARF Version */ .4byte .Labbrev1_begin /* Offset into abbrev section */ .byte 4 /* Pointer size */ /* CU die */ .uleb128 1 /* Abbrev: DW_TAG_compile_unit */ .4byte .Lline1_begin /* DW_AT_stmt_list */ .4byte .Lend_text1 /* DW_AT_high_pc */ .4byte .Lbegin_text1 /* DW_AT_low_pc */ .ascii "file1.txt\0" /* DW_AT_name */ .ascii "GNU C 3.3.3\0" /* DW_AT_producer */ .byte 1 /* DW_AT_language (C) */ /* func_cu1 */ .uleb128 2 /* Abbrev: DW_TAG_subprogram */ .byte 1 /* DW_AT_external */ .byte 1 /* DW_AT_decl_file */ .byte 2 /* DW_AT_decl_line */ .ascii "func_cu1\0" /* DW_AT_name */ .4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */ .4byte .Lbegin_func_cu1 /* DW_AT_low_pc */ .4byte .Lend_func_cu1 /* DW_AT_high_pc */ .byte 1 /* DW_AT_frame_base: length */ .byte 0x55 /* DW_AT_frame_base: DW_OP_reg5 */ .Ltype_int: .uleb128 3 /* Abbrev: DW_TAG_base_type */ .ascii "int\0" /* DW_AT_name */ .byte 4 /* DW_AT_byte_size */ .byte 5 /* DW_AT_encoding */ .uleb128 4 /* Abbrev: DW_TAG_variable */ .ascii "noloc\0" /* DW_AT_name */ .4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */ .byte 1 /* DW_AT_external */ .byte 0 /* End of children of CU */ .Lcu1_end: /* Abbrev table */ .section .debug_abbrev .Labbrev1_begin: .uleb128 1 /* Abbrev code */ .uleb128 0x11 /* DW_TAG_compile_unit */ .byte 1 /* has_children */ .uleb128 0x10 /* DW_AT_stmt_list */ .uleb128 0x6 /* DW_FORM_data4 */ .uleb128 0x12 /* DW_AT_high_pc */ .uleb128 0x1 /* DW_FORM_addr */ .uleb128 0x11 /* DW_AT_low_pc */ .uleb128 0x1 /* DW_FORM_addr */ .uleb128 0x3 /* DW_AT_name */ .uleb128 0x8 /* DW_FORM_string */ .uleb128 0x25 /* DW_AT_producer */ .uleb128 0x8 /* DW_FORM_string */ .uleb128 0x13 /* DW_AT_language */ .uleb128 0xb /* DW_FORM_data1 */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ .uleb128 2 /* Abbrev code */ .uleb128 0x2e /* DW_TAG_subprogram */ .byte 0 /* has_children */ .uleb128 0x3f /* DW_AT_external */ .uleb128 0xc /* DW_FORM_flag */ .uleb128 0x3a /* DW_AT_decl_file */ .uleb128 0xb /* DW_FORM_data1 */ .uleb128 0x3b /* DW_AT_decl_line */ .uleb128 0xb /* DW_FORM_data1 */ .uleb128 0x3 /* DW_AT_name */ .uleb128 0x8 /* DW_FORM_string */ .uleb128 0x49 /* DW_AT_type */ .uleb128 0x13 /* DW_FORM_ref4 */ .uleb128 0x11 /* DW_AT_low_pc */ .uleb128 0x1 /* DW_FORM_addr */ .uleb128 0x12 /* DW_AT_high_pc */ .uleb128 0x1 /* DW_FORM_addr */ .uleb128 0x40 /* DW_AT_frame_base */ .uleb128 0xa /* DW_FORM_block1 */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ .uleb128 3 /* Abbrev code */ .uleb128 0x24 /* DW_TAG_base_type */ .byte 0 /* has_children */ .uleb128 0x3 /* DW_AT_name */ .uleb128 0x8 /* DW_FORM_string */ .uleb128 0xb /* DW_AT_byte_size */ .uleb128 0xb /* DW_FORM_data1 */ .uleb128 0x3e /* DW_AT_encoding */ .uleb128 0xb /* DW_FORM_data1 */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ .uleb128 4 /* Abbrev code */ .uleb128 0x34 /* DW_TAG_variable */ .byte 0 /* has_children */ .uleb128 0x3 /* DW_AT_name */ .uleb128 0x8 /* DW_FORM_string */ .uleb128 0x49 /* DW_AT_type */ .uleb128 0x13 /* DW_FORM_ref4 */ .uleb128 0x3f /* DW_AT_external */ .uleb128 0xc /* DW_FORM_flag */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ .byte 0x0 /* Terminator */ /* Line table */ .section .debug_line .Lline1_begin: .4byte .Lline1_end - .Lline1_start /* Initial length */ .Lline1_start: .2byte 2 /* Version */ .4byte .Lline1_lines - .Lline1_hdr /* header_length */ .Lline1_hdr: .byte 1 /* Minimum insn length */ .byte 1 /* default_is_stmt */ .byte 1 /* line_base */ .byte 1 /* line_range */ .byte 0x10 /* opcode_base */ /* Standard lengths */ .byte 0 .byte 1 .byte 1 .byte 1 .byte 1 .byte 0 .byte 0 .byte 0 .byte 1 .byte 0 .byte 0 .byte 1 .byte 0 .byte 0 .byte 0 /* Include directories */ .byte 0 /* File names */ .ascii "file1.txt\0" .uleb128 0 .uleb128 0 .uleb128 0 .byte 0 .Lline1_lines: .byte 0 /* DW_LNE_set_address */ .uleb128 5 .byte 2 .4byte .Lbegin_func_cu1 .byte 3 /* DW_LNS_advance_line */ .sleb128 3 /* ... to 4 */ .byte 1 /* DW_LNS_copy */ .byte 1 /* DW_LNS_copy (second time as an end-of-prologue marker) */ .byte 0 /* DW_LNE_set_address */ .uleb128 5 .byte 2 .4byte .Lend_func_cu1 .byte 0 /* DW_LNE_end_of_sequence */ .uleb128 1 .byte 1 .Lline1_end: --ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="dw2-noloc.exp" Content-length: 1643 # Copyright 2007 Free Software Foundation, Inc. # 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. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # This test can only be run on targets which support DWARF-2 and use gas. # For now pick a sampling of likely targets. if {![istarget *-*-linux*] && ![istarget *-*-gnu*] && ![istarget *-*-elf*] && ![istarget *-*-openbsd*] && ![istarget arm-*-eabi*] && ![istarget powerpc-*-eabi*]} { return 0 } set testfile "dw2-noloc" set srcfile ${testfile}.S set binfile ${objdir}/${subdir}/${testfile}.x if { [gdb_compile "${srcdir}/${subdir}/main.c" "main.o" object {debug}] != "" } { return -1 } if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${testfile}.o" object {nodebug}] != "" } { return -1 } if { [gdb_compile "${testfile}.o main.o" "${binfile}" executable {debug}] != "" } { return -1 } gdb_exit gdb_start gdb_reinitialize_dir $srcdir/$subdir gdb_load ${binfile} gdb_test "print noloc" "Address of symbol \"noloc\" is unknown." "print noloc" --ew6BAiZeqk4r7MaW--