(default_symfile_offsets): Check VMA here. Update section VMAs.
* gdb.cp/cp-relocate.cc, gdb.cp/cp-relocate.exp: New.
+2007-02-26 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * symfile.c (place_section): Check SEC_ALLOC. Do not check VMA.
+ (default_symfile_offsets): Check VMA here. Update section VMAs.
+
2007-02-26 Daniel Jacobowitz <dan@codesourcery.com>
* remote.c (init_remote_state): Add special handling for placeholder
int done;
ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect);
- /* We are only interested in loadable sections. */
- if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0)
+ /* We are only interested in allocated sections. */
+ if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0)
return;
/* If the user specified an offset, honor it. */
if (cur_sec == sect)
continue;
- /* We can only conflict with loadable sections. */
- if ((bfd_get_section_flags (abfd, cur_sec) & SEC_LOAD) == 0)
- continue;
-
- /* We do not expect this to happen; just ignore sections in a
- relocatable file with an assigned VMA. */
- if (bfd_section_vma (abfd, cur_sec) != 0)
+ /* We can only conflict with allocated sections. */
+ if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0)
continue;
/* If the section offset is 0, either the section has not been placed
if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0)
{
struct place_section_arg arg;
- arg.offsets = objfile->section_offsets;
- arg.lowest = 0;
- bfd_map_over_sections (objfile->obfd, place_section, &arg);
+ bfd *abfd = objfile->obfd;
+ asection *cur_sec;
+ CORE_ADDR lowest = 0;
+
+ for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next)
+ /* We do not expect this to happen; just skip this step if the
+ relocatable file has a section with an assigned VMA. */
+ if (bfd_section_vma (abfd, cur_sec) != 0)
+ break;
+
+ if (cur_sec == NULL)
+ {
+ CORE_ADDR *offsets = objfile->section_offsets->offsets;
+
+ /* Pick non-overlapping offsets for sections the user did not
+ place explicitly. */
+ arg.offsets = objfile->section_offsets;
+ arg.lowest = 0;
+ bfd_map_over_sections (objfile->obfd, place_section, &arg);
+
+ /* Correctly filling in the section offsets is not quite
+ enough. Relocatable files have two properties that
+ (most) shared objects do not:
+
+ - Their debug information will contain relocations. Some
+ shared libraries do also, but many do not, so this can not
+ be assumed.
+
+ - If there are multiple code sections they will be loaded
+ at different relative addresses in memory than they are
+ in the objfile, since all sections in the file will start
+ at address zero.
+
+ Because GDB has very limited ability to map from an
+ address in debug info to the correct code section,
+ it relies on adding SECT_OFF_TEXT to things which might be
+ code. If we clear all the section offsets, and set the
+ section VMAs instead, then symfile_relocate_debug_section
+ will return meaningful debug information pointing at the
+ correct sections.
+
+ GDB has too many different data structures for section
+ addresses - a bfd, objfile, and so_list all have section
+ tables, as does exec_ops. Some of these could probably
+ be eliminated. */
+
+ for (cur_sec = abfd->sections; cur_sec != NULL;
+ cur_sec = cur_sec->next)
+ {
+ if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0)
+ continue;
+
+ bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]);
+ offsets[cur_sec->index] = 0;
+ }
+ }
}
/* Remember the bfd indexes for the .text, .data, .bss and
+2007-02-26 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * gdb.cp/cp-relocate.cc, gdb.cp/cp-relocate.exp: New.
+
2007-02-26 Daniel Jacobowitz <dan@codesourcery.com>
* gdb.arch/iwmmxt-regs.c, gdb.arch/iwmmxt-regs.exp: Update
--- /dev/null
+/* This test file 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. */
+
+template<int X> int func(int)
+{
+ return X;
+}
+
+int caller()
+{
+ return func<1>(1) + func<2>(2);
+}
--- /dev/null
+# 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. */
+
+# Test loading symbols from unrelocated C++ object files.
+
+set testfile cp-relocate
+set srcfile ${testfile}.cc
+set binfile ${objdir}/${subdir}/${testfile}.o
+
+if { [skip_cplus_tests] } { continue }
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {c++ debug}] != "" } {
+ untested cp-relocate.exp
+ return -1
+}
+
+proc get_func_address { func } {
+ global gdb_prompt hex
+
+ set rfunc [string_to_regexp $func]
+ gdb_test_multiple "print '${func}'" "get address of ${func}" {
+ -re "\\\$\[0-9\]+ = \\{.*\\} (0|($hex) <${rfunc}>)\[\r\n\]+${gdb_prompt} $" {
+ # $1 = {int ()} 0x24 <function_bar>
+ # But if the function is at zero, the name may be omitted.
+ pass "get address of ${func}"
+ if { $expect_out(1,string) == "0" } {
+ return "0x0"
+ } else {
+ return $expect_out(2,string)
+ }
+ }
+ }
+ return ""
+}
+
+# Load the file as an executable; GDB should assign non-overlapping
+# section offsets.
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_file_cmd ${binfile}
+
+# Find the interesting functions. We go to a little effort to find
+# the right function names here, to work around PR c++/40.
+set func1_name ""
+set func2_name ""
+gdb_test_multiple "info functions func<.>" "info functions" {
+ -re "\r\nint (\[^\r\]*func<1>\[^\r]*);" {
+ set func1_name $expect_out(1,string)
+ exp_continue
+ }
+ -re "\r\nint (\[^\r\]*func<2>\[^\r]*);" {
+ set func2_name $expect_out(1,string)
+ exp_continue
+ }
+ -re "$gdb_prompt $" {
+ if { ${func1_name} != "" && ${func2_name} != "" } {
+ pass "info functions"
+ } else {
+ fail "info functions"
+ return -1
+ }
+ }
+}
+
+# Check that all the functions have different addresses.
+set func1_addr [get_func_address "$func1_name"]
+set func2_addr [get_func_address "$func2_name"]
+set caller_addr [get_func_address "caller"]
+
+if { "${func1_addr}" == "${func2_addr}"
+ || "${func1_addr}" == "${func2_addr}"
+ || "${func2_addr}" == "${caller_addr}" } {
+ fail "C++ functions have different addresses"
+} else {
+ pass "C++ functions have different addresses"
+}
+
+# Figure out the names of the sections containing the template
+# functions.
+set func1_sec ""
+set func2_sec ""
+gdb_test_multiple "info file" "info file" {
+ -re "($hex) - ($hex) is (\[^\r\]*)\r" {
+ if { $expect_out(1,string) <= $func1_addr
+ && $expect_out(2,string) > $func1_addr } {
+ set func1_sec $expect_out(3,string)
+ } elseif { $expect_out(1,string) <= $func2_addr
+ && $expect_out(2,string) > $func2_addr } {
+ set func2_sec $expect_out(3,string)
+ }
+ exp_continue
+ }
+ -re "$gdb_prompt $" {
+ if { ${func1_sec} != "" && ${func2_sec} != "" } {
+ pass "info file"
+ } else {
+ fail "info file"
+ return -1
+ }
+ }
+}
+
+if { $func1_sec == $func2_sec } {
+ untested "cp-relocate.exp - template functions in same sections"
+ return -1
+}
+
+# Now start a clean GDB, for add-symbol-file tests.
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+
+gdb_test "add-symbol-file ${binfile} 0 -s ${func1_sec} 0x40000 -s ${func2_sec} 0x80000" \
+ "Reading symbols from .*${testfile}\\.o\\.\\.\\.done\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
+ "add-symbol-file ${binfile}" \
+ "add symbol table from file \".*${testfile}\\.o\" at.*\\(y or n\\) " \
+ "y"
+
+# Make sure the function addresses were updated.
+gdb_test "break *'$func1_name'" \
+ "Breakpoint $decimal at 0x4....: file .*"
+gdb_test "break *'$func2_name'" \
+ "Breakpoint $decimal at 0x8....: file .*"
projects / deliverable / binutils-gdb.git / commitdiff
