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* object.cc (Sized_relobj::do_layout): Defer layout for reloc sections.

Browse Source 
(Sized_relobj::do_layout_deferred_sections): Do layout for deferred
	reloc sections.
	* object.h (Sized_relobj::deferred_layout_relocs_): New data member.

	PR 11683
	* symtab.h (Symbol::is_placeholder): New member function.
	* target-reloc.h (relocate_section): Check for placeholder symbols.

	* testsuite/Makefile.am (plugin_test_8): New test.
	(plugin_test_9): New test.
	* testsuite/Makefile.in: Regenerate.
This commit is contained in:
Cary Coutant 2010-06-10 17:20:27 +00:00
parent 7530c48092
commit f3a2388fc9
7 changed files with 143 additions and 5 deletions
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15
gold/ChangeLog
View File

@ -1,3 +1,18 @@
2010-06-10 Cary Coutant <ccoutant@google.com>
* object.cc (Sized_relobj::do_layout): Defer layout for reloc sections.
(Sized_relobj::do_layout_deferred_sections): Do layout for deferred
reloc sections.
* object.h (Sized_relobj::deferred_layout_relocs_): New data member.
PR 11683
* symtab.h (Symbol::is_placeholder): New member function.
* target-reloc.h (relocate_section): Check for placeholder symbols.
* testsuite/Makefile.am (plugin_test_8): New test.
(plugin_test_9): New test.
* testsuite/Makefile.in: Regenerate.
2010-06-09 Nick Clifton <nickc@redhat.com>
* yyscript.y (input_list_element): Allow strings prefixed with

41
gold/object.cc
View File

@ -1371,6 +1371,17 @@ Sized_relobj<size, big_endian>::do_layout(Symbol_table* symtab,
}
Output_section* data_section = out_sections[data_shndx];
if (data_section == reinterpret_cast<Output_section*>(2))
{
// The layout for the data section was deferred, so we need
// to defer the relocation section, too.
const char* name = pnames + shdr.get_sh_name();
this->deferred_layout_relocs_.push_back(
Deferred_layout(i, name, pshdr, 0, elfcpp::SHT_NULL));
out_sections[i] = reinterpret_cast<Output_section*>(2);
out_section_offsets[i] = invalid_address;
continue;
}
if (data_section == NULL)
{
out_sections[i] = NULL;
@ -1471,6 +1482,36 @@ Sized_relobj<size, big_endian>::do_layout_deferred_sections(Layout* layout)
}
this->deferred_layout_.clear();
// Now handle the deferred relocation sections.
Output_sections& out_sections(this->output_sections());
std::vector<Address>& out_section_offsets(this->section_offsets_);
for (deferred = this->deferred_layout_relocs_.begin();
deferred != this->deferred_layout_relocs_.end();
++deferred)
{
unsigned int shndx = deferred->shndx_;
typename This::Shdr shdr(deferred->shdr_data_);
unsigned int data_shndx = this->adjust_shndx(shdr.get_sh_info());
Output_section* data_section = out_sections[data_shndx];
if (data_section == NULL)
{
out_sections[shndx] = NULL;
out_section_offsets[shndx] = invalid_address;
continue;
}
Relocatable_relocs* rr = new Relocatable_relocs();
this->set_relocatable_relocs(shndx, rr);
Output_section* os = layout->layout_reloc(this, shndx, shdr,
data_section, rr);
out_sections[shndx] = os;
out_section_offsets[shndx] = invalid_address;
}
}
// Add the symbols to the symbol table.

2
gold/object.h
View File

@ -2022,6 +2022,8 @@ class Sized_relobj : public Relobj
unsigned int discarded_eh_frame_shndx_;
// The list of sections whose layout was deferred.
std::vector<Deferred_layout> deferred_layout_;
// The list of relocation sections whose layout was deferred.
std::vector<Deferred_layout> deferred_layout_relocs_;
};
// A class to manage the list of all objects.

7
gold/symtab.h
View File

@ -459,6 +459,13 @@ class Symbol
return this->source_ == FROM_OBJECT && this->object()->is_dynamic();
}
// Return whether this is a placeholder symbol from a plugin object.
bool
is_placeholder() const
{
return this->source_ == FROM_OBJECT && this->object()->pluginobj() != NULL;
}
// Return whether this is an undefined symbol.
bool
is_undefined() const

2
gold/target-reloc.h
View File

@ -341,7 +341,7 @@ relocate_section(
}
if (sym != NULL
&& sym->is_undefined()
&& (sym->is_undefined() || sym->is_placeholder())
&& sym->binding() != elfcpp::STB_WEAK
&& !is_defined_in_discarded_section
&& !target->is_defined_by_abi(sym)

28
gold/testsuite/Makefile.am
View File

@ -1314,6 +1314,34 @@ plugin_test_7_2.o: plugin_test_7_2.c
$(COMPILE) -O0 -c -ffunction-sections -fdata-sections -o $@ $<
plugin_test_7.err: plugin_test_7
# Test plugins with -r.
check_PROGRAMS += plugin_test_8
plugin_test_8.o: two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o ../ld-new plugin_test.so
../ld-new -r -o $@ --no-demangle --plugin "./plugin_test.so" two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o
plugin_test_8: plugin_test_8.o gcctestdir/ld
$(CXXLINK) -Bgcctestdir/ -Wl,--no-demangle plugin_test_8.o
# Test that symbols known in the IR file but not in the replacement file
# produce an unresolved symbol error.
check_DATA += plugin_test_9.err
MOSTLYCLEANFILES += plugin_test_9.err
plugin_test_9.err: two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms gcctestdir/ld plugin_test.so
@echo $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms "2>$@"
@if $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms 2>$@; then \
echo 1>&2 "Link of plugin_test_9 should have failed"; \
rm -f $@; \
exit 1; \
fi
# Make a .syms file that claims to define the symbol _Z4t16av.
two_file_test_1c.syms: two_file_test_1.syms two_file_test_1c.o
cp two_file_test_1.syms $@.tmp
grep "_Z4t16av" two_file_test_1b.syms >> $@.tmp
mv -f $@.tmp $@
# Make a copy of two_file_test_1.o, which does not define the symbol _Z4t16av.
MOSTLYCLEANFILES += two_file_test_1c.o
two_file_test_1c.o: two_file_test_1.o
cp two_file_test_1.o $@
plugin_test.so: plugin_test.o
$(LINK) -Bgcctestdir/ -shared plugin_test.o
plugin_test.o: plugin_test.c

53
gold/testsuite/Makefile.in
View File

@ -250,6 +250,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@NATIVE_LINKER_FALSE@binary_test_DEPENDENCIES =
@GCC_FALSE@thin_archive_test_2_DEPENDENCIES =
@NATIVE_LINKER_FALSE@thin_archive_test_2_DEPENDENCIES =
# Test plugins with -r.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_22 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2 \
@ -257,7 +259,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_5 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_8
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_23 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.sh \
@ -265,6 +268,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.sh
# Test that symbols known in the IR file but not in the replacement file
# produce an unresolved symbol error.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_24 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.err \
@ -272,7 +278,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.syms
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.syms \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_9.err
# Make a copy of two_file_test_1.o, which does not define the symbol _Z4t16av.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_25 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.err \
@ -281,6 +289,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_9.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ two_file_test_1c.o \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ unused.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_26 = exclude_libs_test \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test \
@ -499,7 +509,8 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_5$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_8$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_17 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ exclude_libs_test$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test$(EXEEXT) \
@ -757,6 +768,12 @@ plugin_test_7_LDADD = $(LDADD)
plugin_test_7_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
plugin_test_8_SOURCES = plugin_test_8.c
plugin_test_8_OBJECTS = plugin_test_8.$(OBJEXT)
plugin_test_8_LDADD = $(LDADD)
plugin_test_8_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am_protected_1_OBJECTS = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ protected_main_1.$(OBJEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ protected_main_2.$(OBJEXT) \
@ -1120,7 +1137,7 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
$(object_unittest_SOURCES) permission_test.c plugin_test_1.c \
plugin_test_2.c plugin_test_3.c plugin_test_4.c \
plugin_test_5.c plugin_test_6.c plugin_test_7.c \
$(protected_1_SOURCES) $(protected_2_SOURCES) \
plugin_test_8.c $(protected_1_SOURCES) $(protected_2_SOURCES) \
$(relro_script_test_SOURCES) $(relro_test_SOURCES) \
$(script_test_1_SOURCES) $(script_test_2_SOURCES) \
script_test_3.c $(searched_file_test_SOURCES) \
@ -1958,6 +1975,15 @@ object_unittest$(EXEEXT): $(object_unittest_OBJECTS) $(object_unittest_DEPENDENC
@PLUGINS_FALSE@plugin_test_7$(EXEEXT): $(plugin_test_7_OBJECTS) $(plugin_test_7_DEPENDENCIES)
@PLUGINS_FALSE@ @rm -f plugin_test_7$(EXEEXT)
@PLUGINS_FALSE@ $(LINK) $(plugin_test_7_OBJECTS) $(plugin_test_7_LDADD) $(LIBS)
@GCC_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
@GCC_FALSE@ @rm -f plugin_test_8$(EXEEXT)
@GCC_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
@NATIVE_LINKER_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
@NATIVE_LINKER_FALSE@ @rm -f plugin_test_8$(EXEEXT)
@NATIVE_LINKER_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
@PLUGINS_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
@PLUGINS_FALSE@ @rm -f plugin_test_8$(EXEEXT)
@PLUGINS_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
protected_1$(EXEEXT): $(protected_1_OBJECTS) $(protected_1_DEPENDENCIES)
@rm -f protected_1$(EXEEXT)
$(protected_1_LINK) $(protected_1_OBJECTS) $(protected_1_LDADD) $(LIBS)
@ -2191,6 +2217,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_5.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_6.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_7.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_8.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_3.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_main_1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_main_2.Po@am__quote@
@ -3076,6 +3103,24 @@ uninstall-am:
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_7_2.o: plugin_test_7_2.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(COMPILE) -O0 -c -ffunction-sections -fdata-sections -o $@ $<
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_7.err: plugin_test_7
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_8.o: two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o ../ld-new plugin_test.so
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ ../ld-new -r -o $@ --no-demangle --plugin "./plugin_test.so" two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_8: plugin_test_8.o gcctestdir/ld
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(CXXLINK) -Bgcctestdir/ -Wl,--no-demangle plugin_test_8.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_9.err: two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms gcctestdir/ld plugin_test.so
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ @echo $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms "2>$@"
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ @if $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms 2>$@; then \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ echo 1>&2 "Link of plugin_test_9 should have failed"; \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ rm -f $@; \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ exit 1; \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ fi
# Make a .syms file that claims to define the symbol _Z4t16av.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@two_file_test_1c.syms: two_file_test_1.syms two_file_test_1c.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ cp two_file_test_1.syms $@.tmp
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ grep "_Z4t16av" two_file_test_1b.syms >> $@.tmp
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ mv -f $@.tmp $@
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@two_file_test_1c.o: two_file_test_1.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ cp two_file_test_1.o $@
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test.so: plugin_test.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(LINK) -Bgcctestdir/ -shared plugin_test.o