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PR 10893

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* i386.cc (class Output_data_plt_i386): Update declarations.
	Define Global_ifunc and Local_ifunc types.  Add global_ifuncs_ and
	local_ifuncs_ fields.
	(Target_i386::do_plt_section_for_global): New function.
	(Target_i386::do_plt_section_for_local): New function.
	(Output_data_plt_i386::Output_data_plt_i386): Add symtab
	parameter; change all callers.  Initialize global_ifuncs_ and
	local_ifuncs_.  If doing a static link define __rel_iplt_start and
	__rel_iplt_end.
	(Output_data_plt_i386::add_entry): Handle IFUNC symbols.
	(Output_data_plt_i386::add_local_ifunc_entry): New function.
	(Output_data_plt_i386::do_write): Fix GOT entries for IFUNC
	symbols.
	(Target_i386::make_plt_section): New function, broken out of
	make_plt_entry.  Set sh_info field of .rel.plt to point to .plt.
	(Target_i386::make_plt_entry): Call make_plt_section.
	(Target_i386::make_local_ifunc_plt_entry): New function.
	(Target_i386::Scan::reloc_needs_iplt_for_ifunc): New function.
	(Target_i386::Scan::local): Handle IFUNC symbols.  Add
	R_386_IRELATIVE to switch.
	(Target_i386::Scan::global): Likewise.
	(Target_i386::Relocate::relocate): Likewise.
	(Target_i386::Relocatable_size_for_reloc): Add R_386_IRELATIVE to
	switch.
	* x86_64.cc (class Output_data_plt_x86_64): Update declarations.
	(Target_x86_64::do_plt_section_for_global): New function.
	(Target_x86_64::do_plt_section_for_local): New function.
	(Output_data_plt_x86_64::Output_data_plt_x86_64): Add symtab
	parameter; change all callers.  If doing a static link define
	__rela_iplt_start and __rela_iplt_end.
	(Output_data_plt_x86_64::add_entry): Handle IFUNC symbols.
	(Output_data_plt_x86_64::add_local_ifunc_entry): New function.
	(Target_x86_64::make_plt_section): Set sh_info field of .rel.plt
	to point to .plt.
	(Target_x86_64::make_local_ifunc_plt_entry): New function.
	(Target_x86_64::Scan::check_non_pic): Add R_X86_64_IRELATIVE to
	switch.
	(Target_x86_64::Scan::reloc_needs_iplt_for_ifunc): New function.
	(Target_x86_64::Scan::local): Handle IFUNC symbols.  Add
	R_X86_64_IRELATIVE to switch.
	(Target_x86_64::Scan::global): Likewise.
	(Target_x86_64::Relocate::relocate): Likewise.
	(Target_x86_64::Relocatable_size_for_reloc): Add R_X86_64_IRELATIVE to
	switch.
	* target.h (class Target): Add plt_section_for_global and
	plt_section_for_local functions.  Add do_plt_section_for_global
	and do_plt_section_for_local virtual functions.
	* symtab.h (Symbol::needs_plt_entry): Handle IFUNC symbol.  Add
	clarifying comments.
	(Symbol::use_plt_offset): Handle IFUNC symbol.
	* object.cc (Sized_relobj::Sized_relobj): Initialize
	local_plt_offsets_.
	(Sized_relobj::local_has_plt_offset): New function.
	(Sized_relobj::local_plt_offset): New function.
	(Sized_relobj::set_local_plt_offset): New function.
	(Sized_relobj::do_count): Handle IFUNC symbol.
	* object.h (class Symbol_value): Add is_ifunc_symbol_ field.  Take
	a bit away from input_shndx_ field.  Add set_is_func_symbol and
	is_ifunc_symbol functions.
	(class Sized_relobj): Update declarations.  Remove Tls_got_entry
	and Local_tls_got_offsets.  Define Local_plt_offsets.  Add
	local_plt_offsets_ field.
	(Sized_relobj::clear_local_symbols): Clear local_plt_offsets_.
	* output.h (class Output_section_data): Add non-const
	output_section function.
	(class Output_data_got): Update declarations.
	(class Output_data_got::Got_entry): Add use_plt_offset_ field.
	Add use_plt_offset parameter to global and local constructors.
	Change all callers.  Change local_sym_index_ field to 31 bits.
	Change GSYM_CODE and CONSTANT_CODE accordingly.
	* output.cc (Output_data_reloc_base::do_adjust_output_section): If
	doing a static link don't set sh_link field.
	(Output_data_got::Got_entry::write): Use PLT offset if
	appropriate.
	(Output_data_got::add_global_plt): New function.
	(Output_data_got::add_local_plt): New function.
	* target-reloc.h (relocate_section): Handle IFUNC symbol.
	* defstd.cc (in_section): Remove entries for __rel_iplt_start,
	__rel_iplt_end, __rela_iplt_start, and __rela_iplt_end.
	* configure.ac: Set IFUNC automake conditional for glibc >= 2.11.
	* testsuite/Makefile.am: Add a bunch of IFUNC tests, all within
	IFUNC conditional.
	* testsuite/ifunc-sel.h: New file.
	* testsuite/ifuncmain1.c: New file.
	* testsuite/ifuncmain1vis.c: New file.
	* testsuite/ifuncmod1.c: New file.
	* testsuite/ifuncdep2.c: New file.
	* testsuite/ifuncmain2.c: New file.
	* testsuite/ifuncmain3.c: New file.
	* testsuite/ifuncmod3.c: New file.
	* testsuite/ifuncmain4.c: New file.
	* testsuite/ifuncmain5.c: New file.
	* testsuite/ifuncmod5.c: New file.
	* testsuite/ifuncmain6pie.c: New file.
	* testsuite/ifuncmod6.c: New file.
	* testsuite/ifuncmain7.c: New file.
	* configure, testsuite/Makefile.in: Rebuild.
This commit is contained in:
Ian Lance Taylor 2010-08-19 22:50:16 +00:00
parent 43f3e2ee94
commit 7223e9ca5a
29 changed files with 2915 additions and 382 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
gold/ChangeLog
View File

@ -1,3 +1,104 @@
2010-08-19 Ian Lance Taylor <iant@google.com>
PR 10893
* i386.cc (class Output_data_plt_i386): Update declarations.
Define Global_ifunc and Local_ifunc types. Add global_ifuncs_ and
local_ifuncs_ fields.
(Target_i386::do_plt_section_for_global): New function.
(Target_i386::do_plt_section_for_local): New function.
(Output_data_plt_i386::Output_data_plt_i386): Add symtab
parameter; change all callers. Initialize global_ifuncs_ and
local_ifuncs_. If doing a static link define __rel_iplt_start and
__rel_iplt_end.
(Output_data_plt_i386::add_entry): Handle IFUNC symbols.
(Output_data_plt_i386::add_local_ifunc_entry): New function.
(Output_data_plt_i386::do_write): Fix GOT entries for IFUNC
symbols.
(Target_i386::make_plt_section): New function, broken out of
make_plt_entry. Set sh_info field of .rel.plt to point to .plt.
(Target_i386::make_plt_entry): Call make_plt_section.
(Target_i386::make_local_ifunc_plt_entry): New function.
(Target_i386::Scan::reloc_needs_iplt_for_ifunc): New function.
(Target_i386::Scan::local): Handle IFUNC symbols. Add
R_386_IRELATIVE to switch.
(Target_i386::Scan::global): Likewise.
(Target_i386::Relocate::relocate): Likewise.
(Target_i386::Relocatable_size_for_reloc): Add R_386_IRELATIVE to
switch.
* x86_64.cc (class Output_data_plt_x86_64): Update declarations.
(Target_x86_64::do_plt_section_for_global): New function.
(Target_x86_64::do_plt_section_for_local): New function.
(Output_data_plt_x86_64::Output_data_plt_x86_64): Add symtab
parameter; change all callers. If doing a static link define
__rela_iplt_start and __rela_iplt_end.
(Output_data_plt_x86_64::add_entry): Handle IFUNC symbols.
(Output_data_plt_x86_64::add_local_ifunc_entry): New function.
(Target_x86_64::make_plt_section): Set sh_info field of .rel.plt
to point to .plt.
(Target_x86_64::make_local_ifunc_plt_entry): New function.
(Target_x86_64::Scan::check_non_pic): Add R_X86_64_IRELATIVE to
switch.
(Target_x86_64::Scan::reloc_needs_iplt_for_ifunc): New function.
(Target_x86_64::Scan::local): Handle IFUNC symbols. Add
R_X86_64_IRELATIVE to switch.
(Target_x86_64::Scan::global): Likewise.
(Target_x86_64::Relocate::relocate): Likewise.
(Target_x86_64::Relocatable_size_for_reloc): Add R_X86_64_IRELATIVE to
switch.
* target.h (class Target): Add plt_section_for_global and
plt_section_for_local functions. Add do_plt_section_for_global
and do_plt_section_for_local virtual functions.
* symtab.h (Symbol::needs_plt_entry): Handle IFUNC symbol. Add
clarifying comments.
(Symbol::use_plt_offset): Handle IFUNC symbol.
* object.cc (Sized_relobj::Sized_relobj): Initialize
local_plt_offsets_.
(Sized_relobj::local_has_plt_offset): New function.
(Sized_relobj::local_plt_offset): New function.
(Sized_relobj::set_local_plt_offset): New function.
(Sized_relobj::do_count): Handle IFUNC symbol.
* object.h (class Symbol_value): Add is_ifunc_symbol_ field. Take
a bit away from input_shndx_ field. Add set_is_func_symbol and
is_ifunc_symbol functions.
(class Sized_relobj): Update declarations. Remove Tls_got_entry
and Local_tls_got_offsets. Define Local_plt_offsets. Add
local_plt_offsets_ field.
(Sized_relobj::clear_local_symbols): Clear local_plt_offsets_.
* output.h (class Output_section_data): Add non-const
output_section function.
(class Output_data_got): Update declarations.
(class Output_data_got::Got_entry): Add use_plt_offset_ field.
Add use_plt_offset parameter to global and local constructors.
Change all callers. Change local_sym_index_ field to 31 bits.
Change GSYM_CODE and CONSTANT_CODE accordingly.
* output.cc (Output_data_reloc_base::do_adjust_output_section): If
doing a static link don't set sh_link field.
(Output_data_got::Got_entry::write): Use PLT offset if
appropriate.
(Output_data_got::add_global_plt): New function.
(Output_data_got::add_local_plt): New function.
* target-reloc.h (relocate_section): Handle IFUNC symbol.
* defstd.cc (in_section): Remove entries for __rel_iplt_start,
__rel_iplt_end, __rela_iplt_start, and __rela_iplt_end.
* configure.ac: Set IFUNC automake conditional for glibc >= 2.11.
* testsuite/Makefile.am: Add a bunch of IFUNC tests, all within
IFUNC conditional.
* testsuite/ifunc-sel.h: New file.
* testsuite/ifuncmain1.c: New file.
* testsuite/ifuncmain1vis.c: New file.
* testsuite/ifuncmod1.c: New file.
* testsuite/ifuncdep2.c: New file.
* testsuite/ifuncmain2.c: New file.
* testsuite/ifuncmain3.c: New file.
* testsuite/ifuncmod3.c: New file.
* testsuite/ifuncmain4.c: New file.
* testsuite/ifuncmain5.c: New file.
* testsuite/ifuncmod5.c: New file.
* testsuite/ifuncmain6pie.c: New file.
* testsuite/ifuncmod6.c: New file.
* testsuite/ifuncmain7.c: New file.
* configure, testsuite/Makefile.in: Rebuild.
2010-08-18 Ian Lance Taylor <iant@google.com> 2010-08-18 Ian Lance Taylor <iant@google.com>
* incremental.cc * incremental.cc

69
gold/configure vendored
View File

@ -602,6 +602,8 @@ LFS_CFLAGS
WARN_CXXFLAGS WARN_CXXFLAGS
NO_WERROR NO_WERROR
WARN_CFLAGS WARN_CFLAGS
IFUNC_FALSE
IFUNC_TRUE
RANDOM_SEED_CFLAGS RANDOM_SEED_CFLAGS
CONSTRUCTOR_PRIORITY_FALSE CONSTRUCTOR_PRIORITY_FALSE
CONSTRUCTOR_PRIORITY_TRUE CONSTRUCTOR_PRIORITY_TRUE
@ -1913,8 +1915,10 @@ $as_echo "$ac_res" >&6; }
ac_fn_c_check_decl () ac_fn_c_check_decl ()
{ {
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $2 is declared" >&5 as_decl_name=`echo $2|sed 's/ *(.*//'`
$as_echo_n "checking whether $2 is declared... " >&6; } as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then : if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
$as_echo_n "(cached) " >&6 $as_echo_n "(cached) " >&6
else else
@ -1924,8 +1928,12 @@ $4
int int
main () main ()
{ {
#ifndef $2 #ifndef $as_decl_name
(void) $2; #ifdef __cplusplus
(void) $as_decl_use;
#else
(void) $as_decl_name;
#endif
#endif #endif
; ;
@ -2189,8 +2197,10 @@ $as_echo "$ac_res" >&6; }
ac_fn_cxx_check_decl () ac_fn_cxx_check_decl ()
{ {
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $2 is declared" >&5 as_decl_name=`echo $2|sed 's/ *(.*//'`
$as_echo_n "checking whether $2 is declared... " >&6; } as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then : if { as_var=$3; eval "test \"\${$as_var+set}\" = set"; }; then :
$as_echo_n "(cached) " >&6 $as_echo_n "(cached) " >&6
else else
@ -2200,8 +2210,12 @@ $4
int int
main () main ()
{ {
#ifndef $2 #ifndef $as_decl_name
(void) $2; #ifdef __cplusplus
(void) $as_decl_use;
#else
(void) $as_decl_name;
#endif
#endif #endif
; ;
@ -6335,6 +6349,41 @@ if test "$gold_cv_c_random_seed" = "yes"; then
fi fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for glibc >= 2.11" >&5
$as_echo_n "checking for glibc >= 2.11... " >&6; }
if test "${gold_cv_lib_glibc2_11+set}" = set; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <features.h>
#if !defined __GLIBC__
error
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
error
#endif
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
gold_cv_lib_glibc2_11=yes
else
gold_cv_lib_glibc2_11=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gold_cv_lib_glibc2_11" >&5
$as_echo "$gold_cv_lib_glibc2_11" >&6; }
if test "$gold_cv_lib_glibc2_11" = "yes"; then
IFUNC_TRUE=
IFUNC_FALSE='#'
else
IFUNC_TRUE='#'
IFUNC_FALSE=
fi
GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes" GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@ -7206,6 +7255,10 @@ if test -z "${CONSTRUCTOR_PRIORITY_TRUE}" && test -z "${CONSTRUCTOR_PRIORITY_FAL
as_fn_error "conditional \"CONSTRUCTOR_PRIORITY\" was never defined. as_fn_error "conditional \"CONSTRUCTOR_PRIORITY\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5 Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi fi
if test -z "${IFUNC_TRUE}" && test -z "${IFUNC_FALSE}"; then
as_fn_error "conditional \"IFUNC\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5
fi
if test -z "${HAVE_ZLIB_TRUE}" && test -z "${HAVE_ZLIB_FALSE}"; then if test -z "${HAVE_ZLIB_TRUE}" && test -z "${HAVE_ZLIB_FALSE}"; then
as_fn_error "conditional \"HAVE_ZLIB\" was never defined. as_fn_error "conditional \"HAVE_ZLIB\" was never defined.
Usually this means the macro was only invoked conditionally." "$LINENO" 5 Usually this means the macro was only invoked conditionally." "$LINENO" 5

14
gold/configure.ac
View File

@ -359,6 +359,20 @@ if test "$gold_cv_c_random_seed" = "yes"; then
fi fi
AC_SUBST(RANDOM_SEED_CFLAGS) AC_SUBST(RANDOM_SEED_CFLAGS)
dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc
dnl 2.11 or later.
AC_CACHE_CHECK([for glibc >= 2.11], [gold_cv_lib_glibc2_11],
[AC_COMPILE_IFELSE([
#include <features.h>
#if !defined __GLIBC__
error
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
error
#endif
], [gold_cv_lib_glibc2_11=yes], [gold_cv_lib_glibc2_11=no])])
AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc2_11" = "yes")
AM_BINUTILS_WARNINGS AM_BINUTILS_WARNINGS
WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'` WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`

50
gold/defstd.cc
View File

@ -1,6 +1,6 @@
// defstd.cc -- define standard symbols for gold. // defstd.cc -- define standard symbols for gold.
// Copyright 2006, 2007 Free Software Foundation, Inc. // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>. // Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold. // This file is part of gold.
@ -108,54 +108,6 @@ const Define_symbol_in_section in_section[] =
true, // offset_is_from_end true, // offset_is_from_end
true // only_if_ref true // only_if_ref
}, },
{
"__rel_iplt_start", // name
".rel.iplt", // output_section
0, // value
0, // size
elfcpp::STT_NOTYPE, // type
elfcpp::STB_GLOBAL, // binding
elfcpp::STV_HIDDEN, // visibility
0, // nonvis
false, // offset_is_from_end
true // only_if_ref
},
{
"__rel_iplt_end", // name
".rel.iplt", // output_section
0, // value
0, // size
elfcpp::STT_NOTYPE, // type
elfcpp::STB_GLOBAL, // binding
elfcpp::STV_HIDDEN, // visibility
0, // nonvis
true, // offset_is_from_end
true // only_if_ref
},
{
"__rela_iplt_start", // name
".rela.iplt", // output_section
0, // value
0, // size
elfcpp::STT_NOTYPE, // type
elfcpp::STB_GLOBAL, // binding
elfcpp::STV_HIDDEN, // visibility
0, // nonvis
false, // offset_is_from_end
true // only_if_ref
},
{
"__rela_iplt_end", // name
".rela.iplt", // output_section
0, // value
0, // size
elfcpp::STT_NOTYPE, // type
elfcpp::STB_GLOBAL, // binding
elfcpp::STV_HIDDEN, // visibility
0, // nonvis
true, // offset_is_from_end
true // only_if_ref
},
{ {
"__stack", // name "__stack", // name
".stack", // output_section ".stack", // output_section

541
gold/i386.cc
View File

@ -45,7 +45,113 @@ namespace
using namespace gold; using namespace gold;
class Output_data_plt_i386; // A class to handle the PLT data.
class Output_data_plt_i386 : public Output_section_data
{
public:
typedef Output_data_reloc<elfcpp::SHT_REL, true, 32, false> Reloc_section;
Output_data_plt_i386(Symbol_table*, Layout*, Output_data_space*);
// Add an entry to the PLT.
void
add_entry(Symbol* gsym);
// Add an entry to the PLT for a local STT_GNU_IFUNC symbol.
unsigned int
add_local_ifunc_entry(Sized_relobj<32, false>* relobj,
unsigned int local_sym_index);
// Return the .rel.plt section data.
Reloc_section*
rel_plt() const
{ return this->rel_; }
// Return where the TLS_DESC relocations should go.
Reloc_section*
rel_tls_desc(Layout*);
// Return the number of PLT entries.
unsigned int
entry_count() const
{ return this->count_; }
// Return the offset of the first non-reserved PLT entry.
static unsigned int
first_plt_entry_offset()
{ return plt_entry_size; }
// Return the size of a PLT entry.
static unsigned int
get_plt_entry_size()
{ return plt_entry_size; }
protected:
void
do_adjust_output_section(Output_section* os);
// Write to a map file.
void
do_print_to_mapfile(Mapfile* mapfile) const
{ mapfile->print_output_data(this, _("** PLT")); }
private:
// The size of an entry in the PLT.
static const int plt_entry_size = 16;
// The first entry in the PLT for an executable.
static unsigned char exec_first_plt_entry[plt_entry_size];
// The first entry in the PLT for a shared object.
static unsigned char dyn_first_plt_entry[plt_entry_size];
// Other entries in the PLT for an executable.
static unsigned char exec_plt_entry[plt_entry_size];
// Other entries in the PLT for a shared object.
static unsigned char dyn_plt_entry[plt_entry_size];
// Set the final size.
void
set_final_data_size()
{ this->set_data_size((this->count_ + 1) * plt_entry_size); }
// Write out the PLT data.
void
do_write(Output_file*);
// We keep a list of global STT_GNU_IFUNC symbols, each with its
// offset in the GOT.
struct Global_ifunc
{
Symbol* sym;
unsigned int got_offset;
};
// We keep a list of local STT_GNU_IFUNC symbols, each with its
// offset in the GOT.
struct Local_ifunc
{
Sized_relobj<32, false>* object;
unsigned int local_sym_index;
unsigned int got_offset;
};
// The reloc section.
Reloc_section* rel_;
// The TLS_DESC relocations, if necessary. These must follow the
// regular PLT relocs.
Reloc_section* tls_desc_rel_;
// The .got.plt section.
Output_data_space* got_plt_;
// The number of PLT entries.
unsigned int count_;
// Global STT_GNU_IFUNC symbols.
std::vector<Global_ifunc> global_ifuncs_;
// Local STT_GNU_IFUNC symbols.
std::vector<Local_ifunc> local_ifuncs_;
};
// The i386 target class. // The i386 target class.
// TLS info comes from // TLS info comes from
@ -172,6 +278,15 @@ class Target_i386 : public Target_freebsd<32, false>
return Target::do_is_local_label_name(name); return Target::do_is_local_label_name(name);
} }
// Return the PLT section.
Output_data*
do_plt_section_for_global(const Symbol*) const
{ return this->plt_section(); }
Output_data*
do_plt_section_for_local(const Relobj*, unsigned int) const
{ return this->plt_section(); }
// Return whether SYM is call to a non-split function. // Return whether SYM is call to a non-split function.
bool bool
do_is_call_to_non_split(const Symbol* sym, unsigned int) const; do_is_call_to_non_split(const Symbol* sym, unsigned int) const;
@ -255,6 +370,9 @@ class Target_i386 : public Target_freebsd<32, false>
inline bool inline bool
possible_function_pointer_reloc(unsigned int r_type); possible_function_pointer_reloc(unsigned int r_type);
bool
reloc_needs_plt_for_ifunc(Sized_relobj<32, false>*, unsigned int r_type);
static void static void
unsupported_reloc_local(Sized_relobj<32, false>*, unsigned int r_type); unsupported_reloc_local(Sized_relobj<32, false>*, unsigned int r_type);
@ -415,10 +533,20 @@ class Target_i386 : public Target_freebsd<32, false>
return this->got_tlsdesc_; return this->got_tlsdesc_;
} }
// Create the PLT section.
void
make_plt_section(Symbol_table* symtab, Layout* layout);
// Create a PLT entry for a global symbol. // Create a PLT entry for a global symbol.
void void
make_plt_entry(Symbol_table*, Layout*, Symbol*); make_plt_entry(Symbol_table*, Layout*, Symbol*);
// Create a PLT entry for a local STT_GNU_IFUNC symbol.
void
make_local_ifunc_plt_entry(Symbol_table*, Layout*,
Sized_relobj<32, false>* relobj,
unsigned int local_sym_index);
// Define the _TLS_MODULE_BASE_ symbol in the TLS segment. // Define the _TLS_MODULE_BASE_ symbol in the TLS segment.
void void
define_tls_base_symbol(Symbol_table*, Layout*); define_tls_base_symbol(Symbol_table*, Layout*);
@ -586,100 +714,38 @@ Target_i386::rel_dyn_section(Layout* layout)
return this->rel_dyn_; return this->rel_dyn_;
} }
// A class to handle the PLT data.
class Output_data_plt_i386 : public Output_section_data
{
public:
typedef Output_data_reloc<elfcpp::SHT_REL, true, 32, false> Reloc_section;
Output_data_plt_i386(Layout*, Output_data_space*);
// Add an entry to the PLT.
void
add_entry(Symbol* gsym);
// Return the .rel.plt section data.
const Reloc_section*
rel_plt() const
{ return this->rel_; }
// Return where the TLS_DESC relocations should go.
Reloc_section*
rel_tls_desc(Layout*);
// Return the number of PLT entries.
unsigned int
entry_count() const
{ return this->count_; }
// Return the offset of the first non-reserved PLT entry.
static unsigned int
first_plt_entry_offset()
{ return plt_entry_size; }
// Return the size of a PLT entry.
static unsigned int
get_plt_entry_size()
{ return plt_entry_size; }
protected:
void
do_adjust_output_section(Output_section* os);
// Write to a map file.
void
do_print_to_mapfile(Mapfile* mapfile) const
{ mapfile->print_output_data(this, _("** PLT")); }
private:
// The size of an entry in the PLT.
static const int plt_entry_size = 16;
// The first entry in the PLT for an executable.
static unsigned char exec_first_plt_entry[plt_entry_size];
// The first entry in the PLT for a shared object.
static unsigned char dyn_first_plt_entry[plt_entry_size];
// Other entries in the PLT for an executable.
static unsigned char exec_plt_entry[plt_entry_size];
// Other entries in the PLT for a shared object.
static unsigned char dyn_plt_entry[plt_entry_size];
// Set the final size.
void
set_final_data_size()
{ this->set_data_size((this->count_ + 1) * plt_entry_size); }
// Write out the PLT data.
void
do_write(Output_file*);
// The reloc section.
Reloc_section* rel_;
// The TLS_DESC relocations, if necessary. These must follow the
// regular PLT relocs.
Reloc_section* tls_desc_rel_;
// The .got.plt section.
Output_data_space* got_plt_;
// The number of PLT entries.
unsigned int count_;
};
// Create the PLT section. The ordinary .got section is an argument, // Create the PLT section. The ordinary .got section is an argument,
// since we need to refer to the start. We also create our own .got // since we need to refer to the start. We also create our own .got
// section just for PLT entries. // section just for PLT entries.
Output_data_plt_i386::Output_data_plt_i386(Layout* layout, Output_data_plt_i386::Output_data_plt_i386(Symbol_table* symtab,
Layout* layout,
Output_data_space* got_plt) Output_data_space* got_plt)
: Output_section_data(4), tls_desc_rel_(NULL), got_plt_(got_plt), count_(0) : Output_section_data(4), tls_desc_rel_(NULL), got_plt_(got_plt), count_(0),
global_ifuncs_(), local_ifuncs_()
{ {
this->rel_ = new Reloc_section(false); this->rel_ = new Reloc_section(false);
layout->add_output_section_data(".rel.plt", elfcpp::SHT_REL, layout->add_output_section_data(".rel.plt", elfcpp::SHT_REL,
elfcpp::SHF_ALLOC, this->rel_, elfcpp::SHF_ALLOC, this->rel_,
ORDER_DYNAMIC_PLT_RELOCS, false); ORDER_DYNAMIC_PLT_RELOCS, false);
if (parameters->doing_static_link())
{
// A statically linked executable will only have a .rel.plt
// section to hold R_386_IRELATIVE relocs for STT_GNU_IFUNC
// symbols. The library will use these symbols to locate the
// IRELATIVE relocs at program startup time.
symtab->define_in_output_data("__rel_iplt_start", NULL,
Symbol_table::PREDEFINED,
this->rel_, 0, 0, elfcpp::STT_NOTYPE,
elfcpp::STB_GLOBAL, elfcpp::STV_HIDDEN,
0, false, true);
symtab->define_in_output_data("__rel_iplt_end", NULL,
Symbol_table::PREDEFINED,
this->rel_, 0, 0, elfcpp::STT_NOTYPE,
elfcpp::STB_GLOBAL, elfcpp::STV_HIDDEN,
0, true, true);
}
} }
void void
@ -711,15 +777,58 @@ Output_data_plt_i386::add_entry(Symbol* gsym)
this->got_plt_->set_current_data_size(got_offset + 4); this->got_plt_->set_current_data_size(got_offset + 4);
// Every PLT entry needs a reloc. // Every PLT entry needs a reloc.
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& gsym->can_use_relative_reloc(false))
{
this->rel_->add_symbolless_global_addend(gsym, elfcpp::R_386_IRELATIVE,
this->got_plt_, got_offset);
struct Global_ifunc gi;
gi.sym = gsym;
gi.got_offset = got_offset;
this->global_ifuncs_.push_back(gi);
}
else
{
gsym->set_needs_dynsym_entry(); gsym->set_needs_dynsym_entry();
this->rel_->add_global(gsym, elfcpp::R_386_JUMP_SLOT, this->got_plt_, this->rel_->add_global(gsym, elfcpp::R_386_JUMP_SLOT, this->got_plt_,
got_offset); got_offset);
}
// Note that we don't need to save the symbol. The contents of the // Note that we don't need to save the symbol. The contents of the
// PLT are independent of which symbols are used. The symbols only // PLT are independent of which symbols are used. The symbols only
// appear in the relocations. // appear in the relocations.
} }
// Add an entry to the PLT for a local STT_GNU_IFUNC symbol. Return
// the PLT offset.
unsigned int
Output_data_plt_i386::add_local_ifunc_entry(Sized_relobj<32, false>* relobj,
unsigned int local_sym_index)
{
unsigned int plt_offset = (this->count_ + 1) * plt_entry_size;
++this->count_;
section_offset_type got_offset = this->got_plt_->current_data_size();
// Every PLT entry needs a GOT entry which points back to the PLT
// entry.
this->got_plt_->set_current_data_size(got_offset + 4);
// Every PLT entry needs a reloc.
this->rel_->add_symbolless_local_addend(relobj, local_sym_index,
elfcpp::R_386_IRELATIVE,
this->got_plt_, got_offset);
struct Local_ifunc li;
li.object = relobj;
li.local_sym_index = local_sym_index;
li.got_offset = got_offset;
this->local_ifuncs_.push_back(li);
return plt_offset;
}
// Return where the TLS_DESC relocations should go, creating it if // Return where the TLS_DESC relocations should go, creating it if
// necessary. These follow the JUMP_SLOT relocations. // necessary. These follow the JUMP_SLOT relocations.
@ -858,6 +967,32 @@ Output_data_plt_i386::do_write(Output_file* of)
elfcpp::Swap<32, false>::writeval(got_pov, plt_address + plt_offset + 6); elfcpp::Swap<32, false>::writeval(got_pov, plt_address + plt_offset + 6);
} }
// If any STT_GNU_IFUNC symbols have PLT entries, we need to change
// the GOT to point to the actual symbol value, rather than point to
// the PLT entry. That will let the dynamic linker call the right
// function when resolving IRELATIVE relocations.
for (std::vector<Global_ifunc>::const_iterator p =
this->global_ifuncs_.begin();
p != this->global_ifuncs_.end();
++p)
{
const Sized_symbol<32>* ssym =
static_cast<const Sized_symbol<32>*>(p->sym);
elfcpp::Swap<32, false>::writeval(got_view + p->got_offset,
ssym->value());
}
for (std::vector<Local_ifunc>::const_iterator p =
this->local_ifuncs_.begin();
p != this->local_ifuncs_.end();
++p)
{
const Symbol_value<32>* psymval =
p->object->local_symbol(p->local_sym_index);
elfcpp::Swap<32, false>::writeval(got_view + p->got_offset,
psymval->value(p->object, 0));
}
gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
gold_assert(static_cast<section_size_type>(got_pov - got_view) == got_size); gold_assert(static_cast<section_size_type>(got_pov - got_view) == got_size);
@ -865,6 +1000,28 @@ Output_data_plt_i386::do_write(Output_file* of)
of->write_output_view(got_file_offset, got_size, got_view); of->write_output_view(got_file_offset, got_size, got_view);
} }
// Create the PLT section.
void
Target_i386::make_plt_section(Symbol_table* symtab, Layout* layout)
{
if (this->plt_ == NULL)
{
// Create the GOT sections first.
this->got_section(symtab, layout);
this->plt_ = new Output_data_plt_i386(symtab, layout, this->got_plt_);
layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
(elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR),
this->plt_, ORDER_PLT, false);
// Make the sh_info field of .rel.plt point to .plt.
Output_section* rel_plt_os = this->plt_->rel_plt()->output_section();
rel_plt_os->set_info_section(this->plt_->output_section());
}
}
// Create a PLT entry for a global symbol. // Create a PLT entry for a global symbol.
void void
@ -872,22 +1029,27 @@ Target_i386::make_plt_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym)
{ {
if (gsym->has_plt_offset()) if (gsym->has_plt_offset())
return; return;
if (this->plt_ == NULL) if (this->plt_ == NULL)
{ this->make_plt_section(symtab, layout);
// Create the GOT sections first.
this->got_section(symtab, layout);
this->plt_ = new Output_data_plt_i386(layout, this->got_plt_);
layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
(elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR),
this->plt_, ORDER_PLT, false);
}
this->plt_->add_entry(gsym); this->plt_->add_entry(gsym);
} }
// Make a PLT entry for a local STT_GNU_IFUNC symbol.
void
Target_i386::make_local_ifunc_plt_entry(Symbol_table* symtab, Layout* layout,
Sized_relobj<32, false>* relobj,
unsigned int local_sym_index)
{
if (relobj->local_has_plt_offset(local_sym_index))
return;
if (this->plt_ == NULL)
this->make_plt_section(symtab, layout);
unsigned int plt_offset = this->plt_->add_local_ifunc_entry(relobj,
local_sym_index);
relobj->set_local_plt_offset(local_sym_index, plt_offset);
}
// Return the number of entries in the PLT. // Return the number of entries in the PLT.
unsigned int unsigned int
@ -1035,6 +1197,75 @@ Target_i386::Scan::unsupported_reloc_local(Sized_relobj<32, false>* object,
object->name().c_str(), r_type); object->name().c_str(), r_type);
} }
// Return whether we need to make a PLT entry for a relocation of a
// given type against a STT_GNU_IFUNC symbol.
bool
Target_i386::Scan::reloc_needs_plt_for_ifunc(Sized_relobj<32, false>* object,
unsigned int r_type)
{
switch (r_type)
{
case elfcpp::R_386_NONE:
case elfcpp::R_386_GNU_VTINHERIT:
case elfcpp::R_386_GNU_VTENTRY:
return false;
case elfcpp::R_386_32:
case elfcpp::R_386_16:
case elfcpp::R_386_8:
case elfcpp::R_386_PC32:
case elfcpp::R_386_PC16:
case elfcpp::R_386_PC8:
case elfcpp::R_386_PLT32:
case elfcpp::R_386_GOTOFF:
case elfcpp::R_386_GOTPC:
case elfcpp::R_386_GOT32:
return true;
case elfcpp::R_386_COPY:
case elfcpp::R_386_GLOB_DAT:
case elfcpp::R_386_JUMP_SLOT:
case elfcpp::R_386_RELATIVE:
case elfcpp::R_386_IRELATIVE:
case elfcpp::R_386_TLS_TPOFF:
case elfcpp::R_386_TLS_DTPMOD32:
case elfcpp::R_386_TLS_DTPOFF32:
case elfcpp::R_386_TLS_TPOFF32:
case elfcpp::R_386_TLS_DESC:
// We will give an error later.
return false;
case elfcpp::R_386_TLS_GD:
case elfcpp::R_386_TLS_GOTDESC:
case elfcpp::R_386_TLS_DESC_CALL:
case elfcpp::R_386_TLS_LDM:
case elfcpp::R_386_TLS_LDO_32:
case elfcpp::R_386_TLS_IE:
case elfcpp::R_386_TLS_IE_32:
case elfcpp::R_386_TLS_GOTIE:
case elfcpp::R_386_TLS_LE:
case elfcpp::R_386_TLS_LE_32:
gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"),
object->name().c_str(), r_type);
return false;
case elfcpp::R_386_32PLT:
case elfcpp::R_386_TLS_GD_32:
case elfcpp::R_386_TLS_GD_PUSH:
case elfcpp::R_386_TLS_GD_CALL:
case elfcpp::R_386_TLS_GD_POP:
case elfcpp::R_386_TLS_LDM_32:
case elfcpp::R_386_TLS_LDM_PUSH:
case elfcpp::R_386_TLS_LDM_CALL:
case elfcpp::R_386_TLS_LDM_POP:
case elfcpp::R_386_USED_BY_INTEL_200:
default:
// We will give an error later.
return false;
}
}
// Scan a relocation for a local symbol. // Scan a relocation for a local symbol.
inline void inline void
@ -1048,6 +1279,14 @@ Target_i386::Scan::local(Symbol_table* symtab,
unsigned int r_type, unsigned int r_type,
const elfcpp::Sym<32, false>& lsym) const elfcpp::Sym<32, false>& lsym)
{ {
// A local STT_GNU_IFUNC symbol may require a PLT entry.
if (lsym.get_st_type() == elfcpp::STT_GNU_IFUNC
&& this->reloc_needs_plt_for_ifunc(object, r_type))
{
unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info());
target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
}
switch (r_type) switch (r_type)
{ {
case elfcpp::R_386_NONE: case elfcpp::R_386_NONE:
@ -1125,17 +1364,27 @@ Target_i386::Scan::local(Symbol_table* symtab,
// The symbol requires a GOT entry. // The symbol requires a GOT entry.
Output_data_got<32, false>* got = target->got_section(symtab, layout); Output_data_got<32, false>* got = target->got_section(symtab, layout);
unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info()); unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info());
if (got->add_local(object, r_sym, GOT_TYPE_STANDARD))
// For a STT_GNU_IFUNC symbol we want the PLT offset. That
// lets function pointers compare correctly with shared
// libraries. Otherwise we would need an IRELATIVE reloc.
bool is_new;
if (lsym.get_st_type() == elfcpp::STT_GNU_IFUNC)
is_new = got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD);
else
is_new = got->add_local(object, r_sym, GOT_TYPE_STANDARD);
if (is_new)
{ {
// If we are generating a shared object, we need to add a // If we are generating a shared object, we need to add a
// dynamic RELATIVE relocation for this symbol's GOT entry. // dynamic RELATIVE relocation for this symbol's GOT entry.
if (parameters->options().output_is_position_independent()) if (parameters->options().output_is_position_independent())
{ {
Reloc_section* rel_dyn = target->rel_dyn_section(layout); Reloc_section* rel_dyn = target->rel_dyn_section(layout);
unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info()); unsigned int got_offset =
rel_dyn->add_local_relative( object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
object, r_sym, elfcpp::R_386_RELATIVE, got, rel_dyn->add_local_relative(object, r_sym,
object->local_got_offset(r_sym, GOT_TYPE_STANDARD)); elfcpp::R_386_RELATIVE,
got, got_offset);
} }
} }
} }
@ -1147,6 +1396,7 @@ Target_i386::Scan::local(Symbol_table* symtab,
case elfcpp::R_386_GLOB_DAT: case elfcpp::R_386_GLOB_DAT:
case elfcpp::R_386_JUMP_SLOT: case elfcpp::R_386_JUMP_SLOT:
case elfcpp::R_386_RELATIVE: case elfcpp::R_386_RELATIVE:
case elfcpp::R_386_IRELATIVE:
case elfcpp::R_386_TLS_TPOFF: case elfcpp::R_386_TLS_TPOFF:
case elfcpp::R_386_TLS_DTPMOD32: case elfcpp::R_386_TLS_DTPMOD32:
case elfcpp::R_386_TLS_DTPOFF32: case elfcpp::R_386_TLS_DTPOFF32:
@ -1394,6 +1644,11 @@ Target_i386::Scan::global(Symbol_table* symtab,
unsigned int r_type, unsigned int r_type,
Symbol* gsym) Symbol* gsym)
{ {
// A STT_GNU_IFUNC symbol may require a PLT entry.
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& this->reloc_needs_plt_for_ifunc(object, r_type))
target->make_plt_entry(symtab, layout, gsym);
switch (r_type) switch (r_type)
{ {
case elfcpp::R_386_NONE: case elfcpp::R_386_NONE:
@ -1424,6 +1679,24 @@ Target_i386::Scan::global(Symbol_table* symtab,
target->copy_reloc(symtab, layout, object, target->copy_reloc(symtab, layout, object,
data_shndx, output_section, gsym, reloc); data_shndx, output_section, gsym, reloc);
} }
else if (r_type == elfcpp::R_386_32
&& gsym->type() == elfcpp::STT_GNU_IFUNC
&& gsym->can_use_relative_reloc(false)
&& !gsym->is_from_dynobj()
&& !gsym->is_undefined()
&& !gsym->is_preemptible())
{
// Use an IRELATIVE reloc for a locally defined
// STT_GNU_IFUNC symbol. This makes a function
// address in a PIE executable match the address in a
// shared library that it links against.
Reloc_section* rel_dyn = target->rel_dyn_section(layout);
rel_dyn->add_symbolless_global_addend(gsym,
elfcpp::R_386_IRELATIVE,
output_section,
object, data_shndx,
reloc.get_r_offset());
}
else if (r_type == elfcpp::R_386_32 else if (r_type == elfcpp::R_386_32
&& gsym->can_use_relative_reloc(false)) && gsym->can_use_relative_reloc(false))
{ {
@ -1485,7 +1758,13 @@ Target_i386::Scan::global(Symbol_table* symtab,
// The symbol requires a GOT entry. // The symbol requires a GOT entry.
Output_data_got<32, false>* got = target->got_section(symtab, layout); Output_data_got<32, false>* got = target->got_section(symtab, layout);
if (gsym->final_value_is_known()) if (gsym->final_value_is_known())
{
// For a STT_GNU_IFUNC symbol we want the PLT address.
if (gsym->type() == elfcpp::STT_GNU_IFUNC)
got->add_global_plt(gsym, GOT_TYPE_STANDARD);
else
got->add_global(gsym, GOT_TYPE_STANDARD); got->add_global(gsym, GOT_TYPE_STANDARD);
}
else else
{ {
// If this symbol is not fully resolved, we need to add a // If this symbol is not fully resolved, we need to add a
@ -1493,15 +1772,34 @@ Target_i386::Scan::global(Symbol_table* symtab,
Reloc_section* rel_dyn = target->rel_dyn_section(layout); Reloc_section* rel_dyn = target->rel_dyn_section(layout);
if (gsym->is_from_dynobj() if (gsym->is_from_dynobj()
|| gsym->is_undefined() || gsym->is_undefined()
|| gsym->is_preemptible()) || gsym->is_preemptible()
|| (gsym->type() == elfcpp::STT_GNU_IFUNC
&& parameters->options().output_is_position_independent()))
got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, got->add_global_with_rel(gsym, GOT_TYPE_STANDARD,
rel_dyn, elfcpp::R_386_GLOB_DAT); rel_dyn, elfcpp::R_386_GLOB_DAT);
else else
{ {
if (got->add_global(gsym, GOT_TYPE_STANDARD)) // For a STT_GNU_IFUNC symbol we want to write the PLT
rel_dyn->add_global_relative( // offset into the GOT, so that function pointer
gsym, elfcpp::R_386_RELATIVE, got, // comparisons work correctly.
gsym->got_offset(GOT_TYPE_STANDARD)); bool is_new;
if (gsym->type() != elfcpp::STT_GNU_IFUNC)
is_new = got->add_global(gsym, GOT_TYPE_STANDARD);
else
{
is_new = got->add_global_plt(gsym, GOT_TYPE_STANDARD);
// Tell the dynamic linker to use the PLT address
// when resolving relocations.
if (gsym->is_from_dynobj()
&& !parameters->options().shared())
gsym->set_needs_dynsym_value();
}
if (is_new)
{
unsigned int got_off = gsym->got_offset(GOT_TYPE_STANDARD);
rel_dyn->add_global_relative(gsym, elfcpp::R_386_RELATIVE,
got, got_off);
}
} }
} }
} }
@ -1534,6 +1832,7 @@ Target_i386::Scan::global(Symbol_table* symtab,
case elfcpp::R_386_GLOB_DAT: case elfcpp::R_386_GLOB_DAT:
case elfcpp::R_386_JUMP_SLOT: case elfcpp::R_386_JUMP_SLOT:
case elfcpp::R_386_RELATIVE: case elfcpp::R_386_RELATIVE:
case elfcpp::R_386_IRELATIVE:
case elfcpp::R_386_TLS_TPOFF: case elfcpp::R_386_TLS_TPOFF:
case elfcpp::R_386_TLS_DTPMOD32: case elfcpp::R_386_TLS_DTPMOD32:
case elfcpp::R_386_TLS_DTPOFF32: case elfcpp::R_386_TLS_DTPOFF32:
@ -1866,9 +2165,23 @@ Target_i386::Relocate::relocate(const Relocate_info<32, false>* relinfo,
} }
} }
const Sized_relobj<32, false>* object = relinfo->object;
// Pick the value to use for symbols defined in shared objects. // Pick the value to use for symbols defined in shared objects.
Symbol_value<32> symval; Symbol_value<32> symval;
if (gsym != NULL if (gsym != NULL
&& gsym->type() == elfcpp::STT_GNU_IFUNC
&& r_type == elfcpp::R_386_32
&& gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF)
&& gsym->can_use_relative_reloc(false)
&& !gsym->is_from_dynobj()
&& !gsym->is_undefined()
&& !gsym->is_preemptible())
{
// In this case we are generating a R_386_IRELATIVE reloc. We
// want to use the real value of the symbol, not the PLT offset.
}
else if (gsym != NULL
&& gsym->use_plt_offset(r_type == elfcpp::R_386_PC8 && gsym->use_plt_offset(r_type == elfcpp::R_386_PC8
|| r_type == elfcpp::R_386_PC16 || r_type == elfcpp::R_386_PC16
|| r_type == elfcpp::R_386_PC32)) || r_type == elfcpp::R_386_PC32))
@ -1877,8 +2190,16 @@ Target_i386::Relocate::relocate(const Relocate_info<32, false>* relinfo,
+ gsym->plt_offset()); + gsym->plt_offset());
psymval = &symval; psymval = &symval;
} }
else if (gsym == NULL && psymval->is_ifunc_symbol())
const Sized_relobj<32, false>* object = relinfo->object; {
unsigned int r_sym = elfcpp::elf_r_sym<32>(rel.get_r_info());
if (object->local_has_plt_offset(r_sym))
{
symval.set_output_value(target->plt_section()->address()
+ object->local_plt_offset(r_sym));
psymval = &symval;
}
}
// Get the GOT offset if needed. // Get the GOT offset if needed.
// The GOT pointer points to the end of the GOT section. // The GOT pointer points to the end of the GOT section.
@ -2001,6 +2322,7 @@ Target_i386::Relocate::relocate(const Relocate_info<32, false>* relinfo,
case elfcpp::R_386_GLOB_DAT: case elfcpp::R_386_GLOB_DAT:
case elfcpp::R_386_JUMP_SLOT: case elfcpp::R_386_JUMP_SLOT:
case elfcpp::R_386_RELATIVE: case elfcpp::R_386_RELATIVE:
case elfcpp::R_386_IRELATIVE:
// These are outstanding tls relocs, which are unexpected when // These are outstanding tls relocs, which are unexpected when
// linking. // linking.
case elfcpp::R_386_TLS_TPOFF: case elfcpp::R_386_TLS_TPOFF:
@ -2713,6 +3035,7 @@ Target_i386::Relocatable_size_for_reloc::get_size_for_reloc(
case elfcpp::R_386_GLOB_DAT: case elfcpp::R_386_GLOB_DAT:
case elfcpp::R_386_JUMP_SLOT: case elfcpp::R_386_JUMP_SLOT:
case elfcpp::R_386_RELATIVE: case elfcpp::R_386_RELATIVE:
case elfcpp::R_386_IRELATIVE:
case elfcpp::R_386_TLS_TPOFF: case elfcpp::R_386_TLS_TPOFF:
case elfcpp::R_386_TLS_DTPMOD32: case elfcpp::R_386_TLS_DTPMOD32:
case elfcpp::R_386_TLS_DTPOFF32: case elfcpp::R_386_TLS_DTPOFF32:

39
gold/object.cc
View File

@ -391,6 +391,7 @@ Sized_relobj<size, big_endian>::Sized_relobj(
local_dynsym_offset_(0), local_dynsym_offset_(0),
local_values_(), local_values_(),
local_got_offsets_(), local_got_offsets_(),
local_plt_offsets_(),
kept_comdat_sections_(), kept_comdat_sections_(),
has_eh_frame_(false), has_eh_frame_(false),
discarded_eh_frame_shndx_(-1U), discarded_eh_frame_shndx_(-1U),
@ -1690,6 +1691,41 @@ Sized_relobj<size, big_endian>::do_should_include_member(Symbol_table* symtab,
return Archive::SHOULD_INCLUDE_UNKNOWN; return Archive::SHOULD_INCLUDE_UNKNOWN;
} }
// Return whether the local symbol SYMNDX has a PLT offset.
template<int size, bool big_endian>
bool
Sized_relobj<size, big_endian>::local_has_plt_offset(unsigned int symndx) const
{
typename Local_plt_offsets::const_iterator p =
this->local_plt_offsets_.find(symndx);
return p != this->local_plt_offsets_.end();
}
// Get the PLT offset of a local symbol.
template<int size, bool big_endian>
unsigned int
Sized_relobj<size, big_endian>::local_plt_offset(unsigned int symndx) const
{
typename Local_plt_offsets::const_iterator p =
this->local_plt_offsets_.find(symndx);
gold_assert(p != this->local_plt_offsets_.end());
return p->second;
}
// Set the PLT offset of a local symbol.
template<int size, bool big_endian>
void
Sized_relobj<size, big_endian>::set_local_plt_offset(unsigned int symndx,
unsigned int plt_offset)
{
std::pair<typename Local_plt_offsets::iterator, bool> ins =
this->local_plt_offsets_.insert(std::make_pair(symndx, plt_offset));
gold_assert(ins.second);
}
// First pass over the local symbols. Here we add their names to // First pass over the local symbols. Here we add their names to
// *POOL and *DYNPOOL, and we store the symbol value in // *POOL and *DYNPOOL, and we store the symbol value in
// THIS->LOCAL_VALUES_. This function is always called from a // THIS->LOCAL_VALUES_. This function is always called from a
@ -1756,6 +1792,8 @@ Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool,
lv.set_is_section_symbol(); lv.set_is_section_symbol();
else if (sym.get_st_type() == elfcpp::STT_TLS) else if (sym.get_st_type() == elfcpp::STT_TLS)
lv.set_is_tls_symbol(); lv.set_is_tls_symbol();
else if (sym.get_st_type() == elfcpp::STT_GNU_IFUNC)
lv.set_is_ifunc_symbol();
// Save the input symbol value for use in do_finalize_local_symbols(). // Save the input symbol value for use in do_finalize_local_symbols().
lv.set_input_value(sym.get_st_value()); lv.set_input_value(sym.get_st_value());
@ -2065,7 +2103,6 @@ Sized_relobj<size, big_endian>::do_section_entsize(unsigned int shndx)
return shdr.get_sh_entsize(); return shdr.get_sh_entsize();
} }
// Write out the local symbols. // Write out the local symbols.
template<int size, bool big_endian> template<int size, bool big_endian>

51
gold/object.h
View File

@ -39,6 +39,7 @@ class General_options;
class Task; class Task;
class Cref; class Cref;
class Layout; class Layout;
class Output_data;
class Output_section; class Output_section;
class Output_file; class Output_file;
class Output_symtab_xindex; class Output_symtab_xindex;
@ -1151,7 +1152,7 @@ class Symbol_value
Symbol_value() Symbol_value()
: output_symtab_index_(0), output_dynsym_index_(-1U), input_shndx_(0), : output_symtab_index_(0), output_dynsym_index_(-1U), input_shndx_(0),
is_ordinary_shndx_(false), is_section_symbol_(false), is_ordinary_shndx_(false), is_section_symbol_(false),
is_tls_symbol_(false), has_output_value_(true) is_tls_symbol_(false), is_ifunc_symbol_(false), has_output_value_(true)
{ this->u_.value = 0; } { this->u_.value = 0; }
// Get the value of this symbol. OBJECT is the object in which this // Get the value of this symbol. OBJECT is the object in which this
@ -1364,11 +1365,21 @@ class Symbol_value
set_is_tls_symbol() set_is_tls_symbol()
{ this->is_tls_symbol_ = true; } { this->is_tls_symbol_ = true; }
// Return TRUE if this is a TLS symbol. // Return true if this is a TLS symbol.
bool bool
is_tls_symbol() const is_tls_symbol() const
{ return this->is_tls_symbol_; } { return this->is_tls_symbol_; }
// Record that this is an IFUNC symbol.
void
set_is_ifunc_symbol()
{ this->is_ifunc_symbol_ = true; }
// Return true if this is an IFUNC symbol.
bool
is_ifunc_symbol() const
{ return this->is_ifunc_symbol_; }
private: private:
// The index of this local symbol in the output symbol table. This // The index of this local symbol in the output symbol table. This
// will be 0 if no value has been assigned yet, and the symbol may // will be 0 if no value has been assigned yet, and the symbol may
@ -1381,7 +1392,7 @@ class Symbol_value
unsigned int output_dynsym_index_; unsigned int output_dynsym_index_;
// The section index in the input file in which this symbol is // The section index in the input file in which this symbol is
// defined. // defined.
unsigned int input_shndx_ : 28; unsigned int input_shndx_ : 27;
// Whether the section index is an ordinary index, not a special // Whether the section index is an ordinary index, not a special
// value. // value.
bool is_ordinary_shndx_ : 1; bool is_ordinary_shndx_ : 1;
@ -1389,6 +1400,8 @@ class Symbol_value
bool is_section_symbol_ : 1; bool is_section_symbol_ : 1;
// Whether this is a STT_TLS symbol. // Whether this is a STT_TLS symbol.
bool is_tls_symbol_ : 1; bool is_tls_symbol_ : 1;
// Whether this is a STT_GNU_IFUNC symbol.
bool is_ifunc_symbol_ : 1;
// Whether this symbol has a value for the output file. This is // Whether this symbol has a value for the output file. This is
// normally set to true during Layout::finalize, by // normally set to true during Layout::finalize, by
// finalize_local_symbols. It will be false for a section symbol in // finalize_local_symbols. It will be false for a section symbol in
@ -1692,6 +1705,19 @@ class Sized_relobj : public Relobj
return p->second; return p->second;
} }
// Return whether the local symbol SYMNDX has a PLT offset.
bool
local_has_plt_offset(unsigned int symndx) const;
// Return the PLT offset for a local symbol. It is an error to call
// this if it doesn't have one.
unsigned int
local_plt_offset(unsigned int symndx) const;
// Set the PLT offset of the local symbol SYMNDX.
void
set_local_plt_offset(unsigned int symndx, unsigned int plt_offset);
// Get the offset of input section SHNDX within its output section. // Get the offset of input section SHNDX within its output section.
// This is -1 if the input section requires a special mapping, such // This is -1 if the input section requires a special mapping, such
// as a merge section. The output section can be found in the // as a merge section. The output section can be found in the
@ -2108,6 +2134,7 @@ class Sized_relobj : public Relobj
{ {
this->local_values_.clear(); this->local_values_.clear();
this->local_got_offsets_.clear(); this->local_got_offsets_.clear();
this->local_plt_offsets_.clear();
} }
// Record a mapping from discarded section SHNDX to the corresponding // Record a mapping from discarded section SHNDX to the corresponding
@ -2139,20 +2166,8 @@ class Sized_relobj : public Relobj
// for tp-relative offsets for TLS symbols. // for tp-relative offsets for TLS symbols.
typedef Unordered_map<unsigned int, Got_offset_list*> Local_got_offsets; typedef Unordered_map<unsigned int, Got_offset_list*> Local_got_offsets;
// The TLS GOT offsets of local symbols. The map stores the offsets // The PLT offsets of local symbols.
// for either a single GOT entry that holds the module index of a TLS typedef Unordered_map<unsigned int, unsigned int> Local_plt_offsets;
// symbol, or a pair of GOT entries containing the module index and
// dtv-relative offset.
struct Tls_got_entry
{
Tls_got_entry(int got_offset, bool have_pair)
: got_offset_(got_offset),
have_pair_(have_pair)
{ }
int got_offset_;
bool have_pair_;
};
typedef Unordered_map<unsigned int, Tls_got_entry> Local_tls_got_offsets;
// Saved information for sections whose layout was deferred. // Saved information for sections whose layout was deferred.
struct Deferred_layout struct Deferred_layout
@ -2197,6 +2212,8 @@ class Sized_relobj : public Relobj
// GOT offsets for local non-TLS symbols, and tp-relative offsets // GOT offsets for local non-TLS symbols, and tp-relative offsets
// for TLS symbols, indexed by symbol number. // for TLS symbols, indexed by symbol number.
Local_got_offsets local_got_offsets_; Local_got_offsets local_got_offsets_;
// PLT offsets for local symbols.
Local_plt_offsets local_plt_offsets_;
// For each input section, the offset of the input section in its // For each input section, the offset of the input section in its
// output section. This is INVALID_ADDRESS if the input section requires a // output section. This is INVALID_ADDRESS if the input section requires a
// special mapping. // special mapping.

75
gold/output.cc
View File

@ -1,6 +1,6 @@
// output.cc -- manage the output file for gold // output.cc -- manage the output file for gold
// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>. // Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold. // This file is part of gold.
@ -1133,10 +1133,17 @@ Output_data_reloc_base<sh_type, dynamic, size, big_endian>
os->set_entsize(elfcpp::Elf_sizes<size>::rela_size); os->set_entsize(elfcpp::Elf_sizes<size>::rela_size);
else else
gold_unreachable(); gold_unreachable();
if (dynamic)
os->set_should_link_to_dynsym(); // A STT_GNU_IFUNC symbol may require a IRELATIVE reloc when doing a
else // static link. The backends will generate a dynamic reloc section
// to hold this. In that case we don't want to link to the dynsym
// section, because there isn't one.
if (!dynamic)
os->set_should_link_to_symtab(); os->set_should_link_to_symtab();
else if (parameters->doing_static_link())
;
else
os->set_should_link_to_dynsym();
} }
// Write out relocation data. // Write out relocation data.
@ -1262,6 +1269,11 @@ Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const
// link-time value, which will be relocated dynamically by a // link-time value, which will be relocated dynamically by a
// RELATIVE relocation. // RELATIVE relocation.
Symbol* gsym = this->u_.gsym; Symbol* gsym = this->u_.gsym;
if (this->use_plt_offset_ && gsym->has_plt_offset())
val = (parameters->target().plt_section_for_global(gsym)->address()
+ gsym->plt_offset());
else
{
Sized_symbol<size>* sgsym; Sized_symbol<size>* sgsym;
// This cast is a bit ugly. We don't want to put a // This cast is a bit ugly. We don't want to put a
// virtual method in Symbol, because we want Symbol to be // virtual method in Symbol, because we want Symbol to be
@ -1269,6 +1281,7 @@ Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const
sgsym = static_cast<Sized_symbol<size>*>(gsym); sgsym = static_cast<Sized_symbol<size>*>(gsym);
val = sgsym->value(); val = sgsym->value();
} }
}
break; break;
case CONSTANT_CODE: case CONSTANT_CODE:
@ -1277,9 +1290,17 @@ Output_data_got<size, big_endian>::Got_entry::write(unsigned char* pov) const
default: default:
{ {
const Sized_relobj<size, big_endian>* object = this->u_.object;
const unsigned int lsi = this->local_sym_index_; const unsigned int lsi = this->local_sym_index_;
const Symbol_value<size>* symval = this->u_.object->local_symbol(lsi); const Symbol_value<size>* symval = object->local_symbol(lsi);
if (!this->use_plt_offset_)
val = symval->value(this->u_.object, 0); val = symval->value(this->u_.object, 0);
else
{
const Output_data* plt =
parameters->target().plt_section_for_local(object, lsi);
val = plt->address() + object->local_plt_offset(lsi);
}
} }
break; break;
} }
@ -1302,7 +1323,23 @@ Output_data_got<size, big_endian>::add_global(
if (gsym->has_got_offset(got_type)) if (gsym->has_got_offset(got_type))
return false; return false;
this->entries_.push_back(Got_entry(gsym)); this->entries_.push_back(Got_entry(gsym, false));
this->set_got_size();
gsym->set_got_offset(got_type, this->last_got_offset());
return true;
}
// Like add_global, but use the PLT offset.
template<int size, bool big_endian>
bool
Output_data_got<size, big_endian>::add_global_plt(Symbol* gsym,
unsigned int got_type)
{
if (gsym->has_got_offset(got_type))
return false;
this->entries_.push_back(Got_entry(gsym, true));
this->set_got_size(); this->set_got_size();
gsym->set_got_offset(got_type, this->last_got_offset()); gsym->set_got_offset(got_type, this->last_got_offset());
return true; return true;
@ -1310,6 +1347,7 @@ Output_data_got<size, big_endian>::add_global(
// Add an entry for a global symbol to the GOT, and add a dynamic // Add an entry for a global symbol to the GOT, and add a dynamic
// relocation of type R_TYPE for the GOT entry. // relocation of type R_TYPE for the GOT entry.
template<int size, bool big_endian> template<int size, bool big_endian>
void void
Output_data_got<size, big_endian>::add_global_with_rel( Output_data_got<size, big_endian>::add_global_with_rel(
@ -1417,7 +1455,25 @@ Output_data_got<size, big_endian>::add_local(
if (object->local_has_got_offset(symndx, got_type)) if (object->local_has_got_offset(symndx, got_type))
return false; return false;
this->entries_.push_back(Got_entry(object, symndx)); this->entries_.push_back(Got_entry(object, symndx, false));
this->set_got_size();
object->set_local_got_offset(symndx, got_type, this->last_got_offset());
return true;
}
// Like add_local, but use the PLT offset.
template<int size, bool big_endian>
bool
Output_data_got<size, big_endian>::add_local_plt(
Sized_relobj<size, big_endian>* object,
unsigned int symndx,
unsigned int got_type)
{
if (object->local_has_got_offset(symndx, got_type))
return false;
this->entries_.push_back(Got_entry(object, symndx, true));
this->set_got_size(); this->set_got_size();
object->set_local_got_offset(symndx, got_type, this->last_got_offset()); object->set_local_got_offset(symndx, got_type, this->last_got_offset());
return true; return true;
@ -1425,6 +1481,7 @@ Output_data_got<size, big_endian>::add_local(
// Add an entry for a local symbol to the GOT, and add a dynamic // Add an entry for a local symbol to the GOT, and add a dynamic
// relocation of type R_TYPE for the GOT entry. // relocation of type R_TYPE for the GOT entry.
template<int size, bool big_endian> template<int size, bool big_endian>
void void
Output_data_got<size, big_endian>::add_local_with_rel( Output_data_got<size, big_endian>::add_local_with_rel(
@ -1486,7 +1543,7 @@ Output_data_got<size, big_endian>::add_local_pair_with_rel(
Output_section* os = object->output_section(shndx); Output_section* os = object->output_section(shndx);
rel_dyn->add_output_section(os, r_type_1, this, got_offset); rel_dyn->add_output_section(os, r_type_1, this, got_offset);
this->entries_.push_back(Got_entry(object, symndx)); this->entries_.push_back(Got_entry(object, symndx, false));
if (r_type_2 != 0) if (r_type_2 != 0)
{ {
got_offset = this->last_got_offset(); got_offset = this->last_got_offset();
@ -1516,7 +1573,7 @@ Output_data_got<size, big_endian>::add_local_pair_with_rela(
Output_section* os = object->output_section(shndx); Output_section* os = object->output_section(shndx);
rela_dyn->add_output_section(os, r_type_1, this, got_offset, 0); rela_dyn->add_output_section(os, r_type_1, this, got_offset, 0);
this->entries_.push_back(Got_entry(object, symndx)); this->entries_.push_back(Got_entry(object, symndx, false));
if (r_type_2 != 0) if (r_type_2 != 0)
{ {
got_offset = this->last_got_offset(); got_offset = this->last_got_offset();

40
gold/output.h
View File

@ -1,6 +1,6 @@
// output.h -- manage the output file for gold -*- C++ -*- // output.h -- manage the output file for gold -*- C++ -*-
// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>. // Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold. // This file is part of gold.
@ -605,6 +605,10 @@ class Output_section_data : public Output_data
{ } { }
// Return the output section. // Return the output section.
Output_section*
output_section()
{ return this->output_section_; }
const Output_section* const Output_section*
output_section() const output_section() const
{ return this->output_section_; } { return this->output_section_; }
@ -1913,6 +1917,11 @@ class Output_data_got : public Output_section_data_build
bool bool
add_global(Symbol* gsym, unsigned int got_type); add_global(Symbol* gsym, unsigned int got_type);
// Like add_global, but use the PLT offset of the global symbol if
// it has one.
bool
add_global_plt(Symbol* gsym, unsigned int got_type);
// Add an entry for a global symbol to the GOT, and add a dynamic // Add an entry for a global symbol to the GOT, and add a dynamic
// relocation of type R_TYPE for the GOT entry. // relocation of type R_TYPE for the GOT entry.
void void
@ -1942,6 +1951,12 @@ class Output_data_got : public Output_section_data_build
add_local(Sized_relobj<size, big_endian>* object, unsigned int sym_index, add_local(Sized_relobj<size, big_endian>* object, unsigned int sym_index,
unsigned int got_type); unsigned int got_type);
// Like add_local, but use the PLT offset of the local symbol if it
// has one.
bool
add_local_plt(Sized_relobj<size, big_endian>* object, unsigned int sym_index,
unsigned int got_type);
// Add an entry for a local symbol to the GOT, and add a dynamic // Add an entry for a local symbol to the GOT, and add a dynamic
// relocation of type R_TYPE for the GOT entry. // relocation of type R_TYPE for the GOT entry.
void void
@ -1995,28 +2010,29 @@ class Output_data_got : public Output_section_data_build
public: public:
// Create a zero entry. // Create a zero entry.
Got_entry() Got_entry()
: local_sym_index_(CONSTANT_CODE) : local_sym_index_(CONSTANT_CODE), use_plt_offset_(false)
{ this->u_.constant = 0; } { this->u_.constant = 0; }
// Create a global symbol entry. // Create a global symbol entry.
explicit Got_entry(Symbol* gsym) Got_entry(Symbol* gsym, bool use_plt_offset)
: local_sym_index_(GSYM_CODE) : local_sym_index_(GSYM_CODE), use_plt_offset_(use_plt_offset)
{ this->u_.gsym = gsym; } { this->u_.gsym = gsym; }
// Create a local symbol entry. // Create a local symbol entry.
Got_entry(Sized_relobj<size, big_endian>* object, Got_entry(Sized_relobj<size, big_endian>* object,
unsigned int local_sym_index) unsigned int local_sym_index, bool use_plt_offset)
: local_sym_index_(local_sym_index) : local_sym_index_(local_sym_index), use_plt_offset_(use_plt_offset)
{ {
gold_assert(local_sym_index != GSYM_CODE gold_assert(local_sym_index != GSYM_CODE
&& local_sym_index != CONSTANT_CODE); && local_sym_index != CONSTANT_CODE
&& local_sym_index == this->local_sym_index_);
this->u_.object = object; this->u_.object = object;
} }
// Create a constant entry. The constant is a host value--it will // Create a constant entry. The constant is a host value--it will
// be swapped, if necessary, when it is written out. // be swapped, if necessary, when it is written out.
explicit Got_entry(Valtype constant) explicit Got_entry(Valtype constant)
: local_sym_index_(CONSTANT_CODE) : local_sym_index_(CONSTANT_CODE), use_plt_offset_(false)
{ this->u_.constant = constant; } { this->u_.constant = constant; }
// Write the GOT entry to an output view. // Write the GOT entry to an output view.
@ -2026,8 +2042,8 @@ class Output_data_got : public Output_section_data_build
private: private:
enum enum
{ {
GSYM_CODE = -1U, GSYM_CODE = 0x7fffffff,
CONSTANT_CODE = -2U CONSTANT_CODE = 0x7ffffffe
}; };
union union
@ -2041,7 +2057,9 @@ class Output_data_got : public Output_section_data_build
} u_; } u_;
// For a local symbol, the local symbol index. This is GSYM_CODE // For a local symbol, the local symbol index. This is GSYM_CODE
// for a global symbol, or CONSTANT_CODE for a constant. // for a global symbol, or CONSTANT_CODE for a constant.
unsigned int local_sym_index_; unsigned int local_sym_index_ : 31;
// Whether to use the PLT offset of the symbol if it has one.
bool use_plt_offset_ : 1;
}; };
typedef std::vector<Got_entry> Got_entries; typedef std::vector<Got_entry> Got_entries;

32
gold/symtab.h
View File

@ -582,9 +582,6 @@ class Symbol
} }
// Return true if this symbol is a function that needs a PLT entry. // Return true if this symbol is a function that needs a PLT entry.
// If the symbol is defined in a dynamic object or if it is subject
// to pre-emption, we need to make a PLT entry. If we're doing a
// static link or a -pie link, we don't create PLT entries.
bool bool
needs_plt_entry() const needs_plt_entry() const
{ {
@ -592,12 +589,27 @@ class Symbol
if (this->is_undefined() && !parameters->options().shared()) if (this->is_undefined() && !parameters->options().shared())
return false; return false;
return (!parameters->doing_static_link() // An STT_GNU_IFUNC symbol always needs a PLT entry, even when
&& !parameters->options().pie() // doing a static link.
&& this->is_func() if (this->type() == elfcpp::STT_GNU_IFUNC)
&& (this->is_from_dynobj() return true;
// We only need a PLT entry for a function.
if (!this->is_func())
return false;
// If we're doing a static link or a -pie link, we don't create
// PLT entries.
if (parameters->doing_static_link()
|| parameters->options().pie())
return false;
// We need a PLT entry if the function is defined in a dynamic
// object, or is undefined when building a shared object, or if it
// is subject to pre-emption.
return (this->is_from_dynobj()
|| this->is_undefined() || this->is_undefined()
|| this->is_preemptible())); || this->is_preemptible());
} }
// When determining whether a reference to a symbol needs a dynamic // When determining whether a reference to a symbol needs a dynamic
@ -678,6 +690,10 @@ class Symbol
if (!this->has_plt_offset()) if (!this->has_plt_offset())
return false; return false;
// For a STT_GNU_IFUNC symbol we always have to use the PLT entry.
if (this->type() == elfcpp::STT_GNU_IFUNC)
return true;
// If we are going to generate a dynamic relocation, then we will // If we are going to generate a dynamic relocation, then we will
// wind up using that, so no need to use the PLT entry. // wind up using that, so no need to use the PLT entry.
if (this->needs_dynamic_reloc(FUNCTION_CALL if (this->needs_dynamic_reloc(FUNCTION_CALL

4
gold/target-reloc.h
View File

@ -284,6 +284,10 @@ relocate_section(
else else
symval.set_no_output_symtab_entry(); symval.set_no_output_symtab_entry();
symval.set_output_value(sym->value()); symval.set_output_value(sym->value());
if (gsym->type() == elfcpp::STT_TLS)
symval.set_is_tls_symbol();
else if (gsym->type() == elfcpp::STT_GNU_IFUNC)
symval.set_is_ifunc_symbol();
psymval = &symval; psymval = &symval;
is_defined_in_discarded_section = is_defined_in_discarded_section =

23
gold/target.h
View File

@ -53,6 +53,7 @@ class Symbol;
template<int size> template<int size>
class Sized_symbol; class Sized_symbol;
class Symbol_table; class Symbol_table;
class Output_data;
class Output_section; class Output_section;
class Input_objects; class Input_objects;
@ -261,6 +262,18 @@ class Target
reloc_addend(void* arg, unsigned int type, uint64_t addend) const reloc_addend(void* arg, unsigned int type, uint64_t addend) const
{ return this->do_reloc_addend(arg, type, addend); } { return this->do_reloc_addend(arg, type, addend); }
// Return the PLT section to use for a global symbol. This is used
// for STT_GNU_IFUNC symbols.
Output_data*
plt_section_for_global(const Symbol* sym) const
{ return this->do_plt_section_for_global(sym); }
// Return the PLT section to use for a local symbol. This is used
// for STT_GNU_IFUNC symbols.
Output_data*
plt_section_for_local(const Relobj* object, unsigned int symndx) const
{ return this->do_plt_section_for_local(object, symndx); }
// Return true if a reference to SYM from a reloc of type R_TYPE // Return true if a reference to SYM from a reloc of type R_TYPE
// means that the current function may call an object compiled // means that the current function may call an object compiled
// without -fsplit-stack. SYM is known to be defined in an object // without -fsplit-stack. SYM is known to be defined in an object
@ -462,6 +475,16 @@ class Target
do_reloc_addend(void*, unsigned int, uint64_t) const do_reloc_addend(void*, unsigned int, uint64_t) const
{ gold_unreachable(); } { gold_unreachable(); }
// Virtual functions that must be overridden by a target that uses
// STT_GNU_IFUNC symbols.
virtual Output_data*
do_plt_section_for_global(const Symbol*) const
{ gold_unreachable(); }
virtual Output_data*
do_plt_section_for_local(const Relobj*, unsigned int) const
{ gold_unreachable(); }
// Virtual function which may be overridden by the child class. The // Virtual function which may be overridden by the child class. The
// default implementation is that any function not defined by the // default implementation is that any function not defined by the
// ABI is a call to a non-split function. // ABI is a call to a non-split function.

202
gold/testsuite/Makefile.am
View File

@ -1530,6 +1530,208 @@ no_version_test.o: no_version_test.c
no_version_test.stdout: libno_version_test.so no_version_test.stdout: libno_version_test.so
$(TEST_OBJDUMP) -h $< > $@ $(TEST_OBJDUMP) -h $< > $@
# Test STT_GNU_IFUNC symbols.
if IFUNC
ifuncmod1.o: ifuncmod1.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmod1.so: ifuncmod1.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -shared ifuncmod1.o
ifuncdep1.o: ifuncmod1.c
$(COMPILE) -c -o $@ $<
ifuncmain1pic.o: ifuncmain1.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmain1pie.o: ifuncmain1.c
$(COMPILE) -c -fpie -o $@ $<
check_PROGRAMS += ifuncmain1static
ifuncmain1static_SOURCES = ifuncmain1.c
ifuncmain1static_DEPENDENCIES = gcctestdir/ld ifuncdep1.o
ifuncmain1static_LDFLAGS = -Bgcctestdir/ -static
ifuncmain1static_LDADD = ifuncdep1.o
check_PROGRAMS += ifuncmain1picstatic
ifuncmain1picstatic: ifuncmain1pic.o ifuncmod1.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -static ifuncmain1pic.o ifuncmod1.o
check_PROGRAMS += ifuncmain1
ifuncmain1_SOURCES = ifuncmain1.c
ifuncmain1_DEPENDENCIES = gcctestdir/ld ifuncmod1.so
ifuncmain1_LDFLAGS = -Bgcctestdir/ -Wl,-R,.
ifuncmain1_LDADD = ifuncmod1.so
check_PROGRAMS += ifuncmain1pic
ifuncmain1pic: ifuncmain1pic.o ifuncmod1.so gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.so -Wl,-R,.
check_PROGRAMS += ifuncmain1vis
ifuncmain1vis_SOURCES = ifuncmain1vis.c
ifuncmain1vis_DEPENDENCIES = gcctestdir/ld ifuncmod1.so
ifuncmain1vis_LDFLAGS = -Bgcctestdir/ -Wl,-R,.
ifuncmain1vis_LDADD = ifuncmod1.so
check_PROGRAMS += ifuncmain1vispic
ifuncmain1vispic.o: ifuncmain1vis.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmain1vispic: ifuncmain1vispic.o ifuncmod1.so gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.so -Wl,-R,.
check_PROGRAMS += ifuncmain1staticpic
ifuncmain1staticpic: ifuncmain1pic.o ifuncmod1.o gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.o
check_PROGRAMS += ifuncmain1pie
ifuncmain1pie: ifuncmain1pie.o ifuncmod1.so gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain1pie.o ifuncmod1.so -Wl,-R,.
check_PROGRAMS += ifuncmain1vispie
ifuncmain1vispie.o: ifuncmain1vis.c
$(COMPILE) -c -fpie -o $@ $<
ifuncmain1vispie: ifuncmain1vispie.o ifuncmod1.so gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain1vispie.o ifuncmod1.so -Wl,-R,.
check_PROGRAMS += ifuncmain1staticpie
ifuncmain1staticpie: ifuncmain1pie.o ifuncmod1.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain1pie.o ifuncmod1.o
ifuncmain2pic.o: ifuncmain2.c
$(COMPILE) -c -fpic -o $@ $<
ifuncdep2pic.o: ifuncdep2.c
$(COMPILE) -c -fpic -o $@ $<
check_PROGRAMS += ifuncmain2static
ifuncmain2static_SOURCES = ifuncmain2.c ifuncdep2.c
ifuncmain2static_DEPENDENCIES = gcctestdir/ld
ifuncmain2static_LDFLAGS = -Bgcctestdir/ -static
check_PROGRAMS += ifuncmain2picstatic
ifuncmain2picstatic: ifuncmain2pic.o ifuncdep2pic.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -static ifuncmain2pic.o ifuncdep2pic.o
check_PROGRAMS += ifuncmain2
ifuncmain2_SOURCES = ifuncmain2.c ifuncdep2.c
ifuncmain2_DEPENDENCIES = gcctestdir/ld
ifuncmain2_LDFLAGS = -Bgcctestdir/
check_PROGRAMS += ifuncmain2pic
ifuncmain2pic: ifuncmain2pic.o ifuncdep2pic.o gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain2pic.o ifuncdep2pic.o
ifuncmod3.o: ifuncmod3.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmod3.so: ifuncmod3.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -shared ifuncmod3.o
check_PROGRAMS += ifuncmain3
ifuncmain3_SOURCES = ifuncmain3.c
ifuncmain3_DEPENDENCIES = gcctestdir/ld ifuncmod3.so
ifuncmain3_LDFLAGS = -Bgcctestdir/ -Wl,--export-dynamic -Wl,-R,.
ifuncmain3_LDADD = -ldl
ifuncmain4pic.o: ifuncmain4.c
$(COMPILE) -c -fpic -o $@ $<
check_PROGRAMS += ifuncmain4static
ifuncmain4static_SOURCES = ifuncmain4.c
ifuncmain4static_DEPENDENCIES = gcctestdir/ld
ifuncmain4static_LDFLAGS = -Bgcctestdir/ -static
check_PROGRAMS += ifuncmain4picstatic
ifuncmain4picstatic: ifuncmain4pic.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -static ifuncmain4pic.o
check_PROGRAMS += ifuncmain4
ifuncmain4_SOURCES = ifuncmain4.c
ifuncmain4_DEPENDENCIES = gcctestdir/ld
ifuncmain4_LDFLAGS = -Bgcctestdir/
ifuncmain5pic.o: ifuncmain5.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmain5pie.o: ifuncmain5.c
$(COMPILE) -c -fpie -o $@ $<
ifuncmod5.o: ifuncmod5.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmod5.so: ifuncmod5.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -shared ifuncmod5.o
ifuncdep5.o: ifuncmod5.c
$(COMPILE) -c -o $@ $<
check_PROGRAMS += ifuncmain5static
ifuncmain5static_SOURCES = ifuncmain5.c
ifuncmain5static_DEPENDENCIES = gcctestdir/ld ifuncdep5.o
ifuncmain5static_LDFLAGS = -Bgcctestdir/ -static
ifuncmain5static_LDADD = ifuncdep5.o
check_PROGRAMS += ifuncmain5picstatic
ifuncmain5picstatic: ifuncmain5pic.o ifuncmod5.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -static ifuncmain5pic.o ifuncmod5.o
check_PROGRAMS += ifuncmain5
ifuncmain5_SOURCES = ifuncmain5.c
ifuncmain5_DEPENDENCIES = gcctestdir/ld ifuncmod5.so
ifuncmain5_LDFLAGS = -Bgcctestdir/ -Wl,-R,.
ifuncmain5_LDADD = ifuncmod5.so
check_PROGRAMS += ifuncmain5pic
ifuncmain5pic: ifuncmain5pic.o ifuncmod5.so gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain5pic.o ifuncmod5.so -Wl,-R,.
check_PROGRAMS += ifuncmain5staticpic
ifuncmain5staticpic: ifuncmain5pic.o ifuncmod5.o gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain5pic.o ifuncmod5.o
check_PROGRAMS += ifuncmain5pie
ifuncmain5pie: ifuncmain5pie.o ifuncmod5.so gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain5pie.o ifuncmod5.so -Wl,-R,.
ifuncmain6pie.o: ifuncmain6pie.c
$(COMPILE) -c -fpie -o $@ $<
ifuncmod6.o: ifuncmod6.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmod6.so: ifuncmod6.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -shared ifuncmod6.o
check_PROGRAMS += ifuncmain6pie
ifuncmain6pie: ifuncmain6pie.o ifuncmod6.so gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain6pie.o ifuncmod6.so -Wl,-R,.
ifuncmain7pic.o: ifuncmain7.c
$(COMPILE) -c -fpic -o $@ $<
ifuncmain7pie.o: ifuncmain7.c
$(COMPILE) -c -fpie -o $@ $<
check_PROGRAMS += ifuncmain7static
ifuncmain7static_SOURCES = ifuncmain7.c
ifuncmain7static_DEPENDENCIES = gcctestdir/ld
ifuncmain7static_LDFLAGS = -Bgcctestdir/ -static
check_PROGRAMS += ifuncmain7picstatic
ifuncmain7picstatic: ifuncmain7pic.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -static ifuncmain7pic.o
check_PROGRAMS += ifuncmain7
ifuncmain7_SOURCES = ifuncmain7.c
ifuncmain7_DEPENDENCIES = gcctestdir/ld
ifuncmain7_LDFLAGS = -Bgcctestdir/
check_PROGRAMS += ifuncmain7pic
ifuncmain7pic: ifuncmain7pic.o gcctestdir/ld
$(LINK) -Bgcctestdir/ ifuncmain7pic.o
check_PROGRAMS += ifuncmain7pie
ifuncmain7pie: ifuncmain7pie.o gcctestdir/ld
$(LINK) -Bgcctestdir/ -pie ifuncmain7pie.o
endif IFUNC
# Test that strong reference to a weak symbol in a DSO remains strong. # Test that strong reference to a weak symbol in a DSO remains strong.
check_SCRIPTS += strong_ref_weak_def.sh check_SCRIPTS += strong_ref_weak_def.sh
check_DATA += strong_ref_weak_def.stdout check_DATA += strong_ref_weak_def.stdout

763
gold/testsuite/Makefile.in
View File

@ -47,7 +47,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
$(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12) \ $(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12) \
$(am__EXEEXT_13) $(am__EXEEXT_14) $(am__EXEEXT_15) \ $(am__EXEEXT_13) $(am__EXEEXT_14) $(am__EXEEXT_15) \
$(am__EXEEXT_16) $(am__EXEEXT_17) $(am__EXEEXT_18) \ $(am__EXEEXT_16) $(am__EXEEXT_17) $(am__EXEEXT_18) \
$(am__EXEEXT_19) $(am__EXEEXT_19) $(am__EXEEXT_20)
# Test --detect-odr-violations # Test --detect-odr-violations
@ -357,26 +357,129 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ searched_file_test @GCC_TRUE@@NATIVE_LINKER_TRUE@ searched_file_test
@GCC_FALSE@searched_file_test_DEPENDENCIES = @GCC_FALSE@searched_file_test_DEPENDENCIES =
@NATIVE_LINKER_FALSE@searched_file_test_DEPENDENCIES = @NATIVE_LINKER_FALSE@searched_file_test_DEPENDENCIES =
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am__append_32 = \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1static \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1picstatic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1pic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vis \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vispic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1staticpic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1pie \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vispie \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1staticpie \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2static \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2picstatic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2pic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain3 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4static \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4picstatic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5static \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5picstatic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5pic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5staticpic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5pie \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain6pie \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7static \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7picstatic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7 \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7pic \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7pie
@GCC_FALSE@ifuncmain2static_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain2static_DEPENDENCIES = libgoldtest.a \
@IFUNC_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain2static_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
@GCC_FALSE@ifuncmain2_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain2_DEPENDENCIES = libgoldtest.a ../libgold.a \
@IFUNC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain2_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
@GCC_FALSE@ifuncmain3_DEPENDENCIES =
@IFUNC_FALSE@ifuncmain3_DEPENDENCIES =
@NATIVE_LINKER_FALSE@ifuncmain3_DEPENDENCIES =
@GCC_FALSE@ifuncmain4static_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain4static_DEPENDENCIES = libgoldtest.a \
@IFUNC_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain4static_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
@GCC_FALSE@ifuncmain4_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain4_DEPENDENCIES = libgoldtest.a ../libgold.a \
@IFUNC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain4_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
@GCC_FALSE@ifuncmain7static_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain7static_DEPENDENCIES = libgoldtest.a \
@IFUNC_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain7static_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
@GCC_FALSE@ifuncmain7_DEPENDENCIES = libgoldtest.a ../libgold.a \
@GCC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@GCC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@IFUNC_FALSE@ifuncmain7_DEPENDENCIES = libgoldtest.a ../libgold.a \
@IFUNC_FALSE@ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
@IFUNC_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@NATIVE_LINKER_FALSE@ifuncmain7_DEPENDENCIES = libgoldtest.a \
@NATIVE_LINKER_FALSE@ ../libgold.a ../../libiberty/libiberty.a \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1) \
@NATIVE_LINKER_FALSE@ $(am__DEPENDENCIES_1)
# These tests work with cross linkers. # These tests work with cross linkers.
@DEFAULT_TARGET_I386_TRUE@am__append_32 = split_i386.sh @DEFAULT_TARGET_I386_TRUE@am__append_33 = split_i386.sh
@DEFAULT_TARGET_I386_TRUE@am__append_33 = split_i386_1.stdout split_i386_2.stdout \ @DEFAULT_TARGET_I386_TRUE@am__append_34 = split_i386_1.stdout split_i386_2.stdout \
@DEFAULT_TARGET_I386_TRUE@ split_i386_3.stdout split_i386_4.stdout split_i386_r.stdout @DEFAULT_TARGET_I386_TRUE@ split_i386_3.stdout split_i386_4.stdout split_i386_r.stdout
@DEFAULT_TARGET_I386_TRUE@am__append_34 = split_i386_1 split_i386_2 split_i386_3 \ @DEFAULT_TARGET_I386_TRUE@am__append_35 = split_i386_1 split_i386_2 split_i386_3 \
@DEFAULT_TARGET_I386_TRUE@ split_i386_4 split_i386_r @DEFAULT_TARGET_I386_TRUE@ split_i386_4 split_i386_r
@DEFAULT_TARGET_X86_64_TRUE@am__append_35 = split_x86_64.sh @DEFAULT_TARGET_X86_64_TRUE@am__append_36 = split_x86_64.sh
@DEFAULT_TARGET_X86_64_TRUE@am__append_36 = split_x86_64_1.stdout split_x86_64_2.stdout \ @DEFAULT_TARGET_X86_64_TRUE@am__append_37 = split_x86_64_1.stdout split_x86_64_2.stdout \
@DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_3.stdout split_x86_64_4.stdout split_x86_64_r.stdout @DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_3.stdout split_x86_64_4.stdout split_x86_64_r.stdout
@DEFAULT_TARGET_X86_64_TRUE@am__append_37 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \ @DEFAULT_TARGET_X86_64_TRUE@am__append_38 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \
@DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_4 split_x86_64_r @DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_4 split_x86_64_r
@DEFAULT_TARGET_ARM_TRUE@am__append_38 = arm_abs_global.sh \ @DEFAULT_TARGET_ARM_TRUE@am__append_39 = arm_abs_global.sh \
@DEFAULT_TARGET_ARM_TRUE@ arm_branch_in_range.sh \ @DEFAULT_TARGET_ARM_TRUE@ arm_branch_in_range.sh \
@DEFAULT_TARGET_ARM_TRUE@ arm_fix_v4bx.sh arm_attr_merge.sh @DEFAULT_TARGET_ARM_TRUE@ arm_fix_v4bx.sh arm_attr_merge.sh
@DEFAULT_TARGET_ARM_TRUE@am__append_39 = arm_abs_global.stdout \ @DEFAULT_TARGET_ARM_TRUE@am__append_40 = arm_abs_global.stdout \
@DEFAULT_TARGET_ARM_TRUE@ arm_bl_in_range.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_bl_in_range.stdout \
@DEFAULT_TARGET_ARM_TRUE@ arm_bl_out_of_range.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_bl_out_of_range.stdout \
@DEFAULT_TARGET_ARM_TRUE@ thumb_bl_in_range.stdout \ @DEFAULT_TARGET_ARM_TRUE@ thumb_bl_in_range.stdout \
@ -393,7 +496,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6.stdout \
@DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6r.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6r.stdout \
@DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_7.stdout @DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_7.stdout
@DEFAULT_TARGET_ARM_TRUE@am__append_40 = arm_abs_global \ @DEFAULT_TARGET_ARM_TRUE@am__append_41 = arm_abs_global \
@DEFAULT_TARGET_ARM_TRUE@ arm_bl_in_range arm_bl_out_of_range \ @DEFAULT_TARGET_ARM_TRUE@ arm_bl_in_range arm_bl_out_of_range \
@DEFAULT_TARGET_ARM_TRUE@ thumb_bl_in_range \ @DEFAULT_TARGET_ARM_TRUE@ thumb_bl_in_range \
@DEFAULT_TARGET_ARM_TRUE@ thumb_bl_out_of_range \ @DEFAULT_TARGET_ARM_TRUE@ thumb_bl_out_of_range \
@ -531,6 +634,36 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_19 = \ @GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_19 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ permission_test$(EXEEXT) \ @GCC_TRUE@@NATIVE_LINKER_TRUE@ permission_test$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ searched_file_test$(EXEEXT) @GCC_TRUE@@NATIVE_LINKER_TRUE@ searched_file_test$(EXEEXT)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_20 = ifuncmain1static$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1picstatic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1pic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vis$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vispic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1staticpic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1pie$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1vispie$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain1staticpie$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2static$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2picstatic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain2pic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain3$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4static$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4picstatic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain4$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5static$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5picstatic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5pic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5staticpic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain5pie$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain6pie$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7static$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7picstatic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7pic$(EXEEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncmain7pie$(EXEEXT)
basic_pic_test_SOURCES = basic_pic_test.c basic_pic_test_SOURCES = basic_pic_test.c
basic_pic_test_OBJECTS = basic_pic_test.$(OBJEXT) basic_pic_test_OBJECTS = basic_pic_test.$(OBJEXT)
basic_pic_test_LDADD = $(LDADD) basic_pic_test_LDADD = $(LDADD)
@ -696,6 +829,170 @@ icf_virtual_function_folding_test_LDADD = $(LDADD)
icf_virtual_function_folding_test_DEPENDENCIES = libgoldtest.a \ icf_virtual_function_folding_test_DEPENDENCIES = libgoldtest.a \
../libgold.a ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \ ../libgold.a ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain1_OBJECTS = ifuncmain1.$(OBJEXT)
ifuncmain1_OBJECTS = $(am_ifuncmain1_OBJECTS)
ifuncmain1_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain1_LDFLAGS) \
$(LDFLAGS) -o $@
ifuncmain1pic_SOURCES = ifuncmain1pic.c
ifuncmain1pic_OBJECTS = ifuncmain1pic.$(OBJEXT)
ifuncmain1pic_LDADD = $(LDADD)
ifuncmain1pic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain1picstatic_SOURCES = ifuncmain1picstatic.c
ifuncmain1picstatic_OBJECTS = ifuncmain1picstatic.$(OBJEXT)
ifuncmain1picstatic_LDADD = $(LDADD)
ifuncmain1picstatic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain1pie_SOURCES = ifuncmain1pie.c
ifuncmain1pie_OBJECTS = ifuncmain1pie.$(OBJEXT)
ifuncmain1pie_LDADD = $(LDADD)
ifuncmain1pie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain1static_OBJECTS = ifuncmain1.$(OBJEXT)
ifuncmain1static_OBJECTS = $(am_ifuncmain1static_OBJECTS)
ifuncmain1static_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain1static_LDFLAGS) $(LDFLAGS) -o $@
ifuncmain1staticpic_SOURCES = ifuncmain1staticpic.c
ifuncmain1staticpic_OBJECTS = ifuncmain1staticpic.$(OBJEXT)
ifuncmain1staticpic_LDADD = $(LDADD)
ifuncmain1staticpic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain1staticpie_SOURCES = ifuncmain1staticpie.c
ifuncmain1staticpie_OBJECTS = ifuncmain1staticpie.$(OBJEXT)
ifuncmain1staticpie_LDADD = $(LDADD)
ifuncmain1staticpie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain1vis_OBJECTS = ifuncmain1vis.$(OBJEXT)
ifuncmain1vis_OBJECTS = $(am_ifuncmain1vis_OBJECTS)
ifuncmain1vis_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain1vis_LDFLAGS) $(LDFLAGS) -o $@
ifuncmain1vispic_SOURCES = ifuncmain1vispic.c
ifuncmain1vispic_OBJECTS = ifuncmain1vispic.$(OBJEXT)
ifuncmain1vispic_LDADD = $(LDADD)
ifuncmain1vispic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain1vispie_SOURCES = ifuncmain1vispie.c
ifuncmain1vispie_OBJECTS = ifuncmain1vispie.$(OBJEXT)
ifuncmain1vispie_LDADD = $(LDADD)
ifuncmain1vispie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain2_OBJECTS = ifuncmain2.$(OBJEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncdep2.$(OBJEXT)
ifuncmain2_OBJECTS = $(am_ifuncmain2_OBJECTS)
ifuncmain2_LDADD = $(LDADD)
ifuncmain2_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain2_LDFLAGS) \
$(LDFLAGS) -o $@
ifuncmain2pic_SOURCES = ifuncmain2pic.c
ifuncmain2pic_OBJECTS = ifuncmain2pic.$(OBJEXT)
ifuncmain2pic_LDADD = $(LDADD)
ifuncmain2pic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain2picstatic_SOURCES = ifuncmain2picstatic.c
ifuncmain2picstatic_OBJECTS = ifuncmain2picstatic.$(OBJEXT)
ifuncmain2picstatic_LDADD = $(LDADD)
ifuncmain2picstatic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain2static_OBJECTS = ifuncmain2.$(OBJEXT) \
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ ifuncdep2.$(OBJEXT)
ifuncmain2static_OBJECTS = $(am_ifuncmain2static_OBJECTS)
ifuncmain2static_LDADD = $(LDADD)
ifuncmain2static_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain2static_LDFLAGS) $(LDFLAGS) -o $@
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain3_OBJECTS = ifuncmain3.$(OBJEXT)
ifuncmain3_OBJECTS = $(am_ifuncmain3_OBJECTS)
ifuncmain3_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain3_LDFLAGS) \
$(LDFLAGS) -o $@
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain4_OBJECTS = ifuncmain4.$(OBJEXT)
ifuncmain4_OBJECTS = $(am_ifuncmain4_OBJECTS)
ifuncmain4_LDADD = $(LDADD)
ifuncmain4_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain4_LDFLAGS) \
$(LDFLAGS) -o $@
ifuncmain4picstatic_SOURCES = ifuncmain4picstatic.c
ifuncmain4picstatic_OBJECTS = ifuncmain4picstatic.$(OBJEXT)
ifuncmain4picstatic_LDADD = $(LDADD)
ifuncmain4picstatic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain4static_OBJECTS = ifuncmain4.$(OBJEXT)
ifuncmain4static_OBJECTS = $(am_ifuncmain4static_OBJECTS)
ifuncmain4static_LDADD = $(LDADD)
ifuncmain4static_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain4static_LDFLAGS) $(LDFLAGS) -o $@
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain5_OBJECTS = ifuncmain5.$(OBJEXT)
ifuncmain5_OBJECTS = $(am_ifuncmain5_OBJECTS)
ifuncmain5_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain5_LDFLAGS) \
$(LDFLAGS) -o $@
ifuncmain5pic_SOURCES = ifuncmain5pic.c
ifuncmain5pic_OBJECTS = ifuncmain5pic.$(OBJEXT)
ifuncmain5pic_LDADD = $(LDADD)
ifuncmain5pic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain5picstatic_SOURCES = ifuncmain5picstatic.c
ifuncmain5picstatic_OBJECTS = ifuncmain5picstatic.$(OBJEXT)
ifuncmain5picstatic_LDADD = $(LDADD)
ifuncmain5picstatic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain5pie_SOURCES = ifuncmain5pie.c
ifuncmain5pie_OBJECTS = ifuncmain5pie.$(OBJEXT)
ifuncmain5pie_LDADD = $(LDADD)
ifuncmain5pie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain5static_OBJECTS = ifuncmain5.$(OBJEXT)
ifuncmain5static_OBJECTS = $(am_ifuncmain5static_OBJECTS)
ifuncmain5static_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain5static_LDFLAGS) $(LDFLAGS) -o $@
ifuncmain5staticpic_SOURCES = ifuncmain5staticpic.c
ifuncmain5staticpic_OBJECTS = ifuncmain5staticpic.$(OBJEXT)
ifuncmain5staticpic_LDADD = $(LDADD)
ifuncmain5staticpic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain6pie_SOURCES = ifuncmain6pie.c
ifuncmain6pie_OBJECTS = ifuncmain6pie.$(OBJEXT)
ifuncmain6pie_LDADD = $(LDADD)
ifuncmain6pie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain7_OBJECTS = ifuncmain7.$(OBJEXT)
ifuncmain7_OBJECTS = $(am_ifuncmain7_OBJECTS)
ifuncmain7_LDADD = $(LDADD)
ifuncmain7_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(ifuncmain7_LDFLAGS) \
$(LDFLAGS) -o $@
ifuncmain7pic_SOURCES = ifuncmain7pic.c
ifuncmain7pic_OBJECTS = ifuncmain7pic.$(OBJEXT)
ifuncmain7pic_LDADD = $(LDADD)
ifuncmain7pic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain7picstatic_SOURCES = ifuncmain7picstatic.c
ifuncmain7picstatic_OBJECTS = ifuncmain7picstatic.$(OBJEXT)
ifuncmain7picstatic_LDADD = $(LDADD)
ifuncmain7picstatic_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
ifuncmain7pie_SOURCES = ifuncmain7pie.c
ifuncmain7pie_OBJECTS = ifuncmain7pie.$(OBJEXT)
ifuncmain7pie_LDADD = $(LDADD)
ifuncmain7pie_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain7static_OBJECTS = ifuncmain7.$(OBJEXT)
ifuncmain7static_OBJECTS = $(am_ifuncmain7static_OBJECTS)
ifuncmain7static_LDADD = $(LDADD)
ifuncmain7static_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(ifuncmain7static_LDFLAGS) $(LDFLAGS) -o $@
@CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am_initpri1_OBJECTS = initpri1.$(OBJEXT) @CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am_initpri1_OBJECTS = initpri1.$(OBJEXT)
initpri1_OBJECTS = $(am_initpri1_OBJECTS) initpri1_OBJECTS = $(am_initpri1_OBJECTS)
initpri1_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(initpri1_LDFLAGS) \ initpri1_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(initpri1_LDFLAGS) \
@ -1148,7 +1445,20 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
$(exclude_libs_test_SOURCES) \ $(exclude_libs_test_SOURCES) \
flagstest_compress_debug_sections.c flagstest_o_specialfile.c \ flagstest_compress_debug_sections.c flagstest_o_specialfile.c \
flagstest_o_specialfile_and_compress_debug_sections.c \ flagstest_o_specialfile_and_compress_debug_sections.c \
icf_virtual_function_folding_test.c $(initpri1_SOURCES) \ icf_virtual_function_folding_test.c $(ifuncmain1_SOURCES) \
ifuncmain1pic.c ifuncmain1picstatic.c ifuncmain1pie.c \
$(ifuncmain1static_SOURCES) ifuncmain1staticpic.c \
ifuncmain1staticpie.c $(ifuncmain1vis_SOURCES) \
ifuncmain1vispic.c ifuncmain1vispie.c $(ifuncmain2_SOURCES) \
ifuncmain2pic.c ifuncmain2picstatic.c \
$(ifuncmain2static_SOURCES) $(ifuncmain3_SOURCES) \
$(ifuncmain4_SOURCES) ifuncmain4picstatic.c \
$(ifuncmain4static_SOURCES) $(ifuncmain5_SOURCES) \
ifuncmain5pic.c ifuncmain5picstatic.c ifuncmain5pie.c \
$(ifuncmain5static_SOURCES) ifuncmain5staticpic.c \
ifuncmain6pie.c $(ifuncmain7_SOURCES) ifuncmain7pic.c \
ifuncmain7picstatic.c ifuncmain7pie.c \
$(ifuncmain7static_SOURCES) $(initpri1_SOURCES) \
$(justsyms_SOURCES) $(large_SOURCES) local_labels_test.c \ $(justsyms_SOURCES) $(large_SOURCES) local_labels_test.c \
many_sections_r_test.c $(many_sections_test_SOURCES) \ many_sections_r_test.c $(many_sections_test_SOURCES) \
$(object_unittest_SOURCES) permission_test.c plugin_test_1.c \ $(object_unittest_SOURCES) permission_test.c plugin_test_1.c \
@ -1428,16 +1738,16 @@ TEST_AS = $(top_builddir)/../gas/as-new
# the right choice for files 'make' builds that people rebuild. # the right choice for files 'make' builds that people rebuild.
MOSTLYCLEANFILES = *.so *.syms *.stdout $(am__append_3) \ MOSTLYCLEANFILES = *.so *.syms *.stdout $(am__append_3) \
$(am__append_8) $(am__append_17) $(am__append_25) \ $(am__append_8) $(am__append_17) $(am__append_25) \
$(am__append_29) $(am__append_34) $(am__append_37) \ $(am__append_29) $(am__append_35) $(am__append_38) \
$(am__append_40) $(am__append_41)
# We will add to these later, for each individual test. Note # We will add to these later, for each individual test. Note
# that we add each test under check_SCRIPTS or check_PROGRAMS; # that we add each test under check_SCRIPTS or check_PROGRAMS;
# the TESTS variable is automatically populated from these. # the TESTS variable is automatically populated from these.
check_SCRIPTS = $(am__append_1) $(am__append_23) $(am__append_27) \ check_SCRIPTS = $(am__append_1) $(am__append_23) $(am__append_27) \
$(am__append_32) $(am__append_35) $(am__append_38)
check_DATA = $(am__append_2) $(am__append_24) $(am__append_28) \
$(am__append_33) $(am__append_36) $(am__append_39) $(am__append_33) $(am__append_36) $(am__append_39)
check_DATA = $(am__append_2) $(am__append_24) $(am__append_28) \
$(am__append_34) $(am__append_37) $(am__append_40)
BUILT_SOURCES = $(am__append_16) BUILT_SOURCES = $(am__append_16)
TESTS = $(check_SCRIPTS) $(check_PROGRAMS) TESTS = $(check_SCRIPTS) $(check_PROGRAMS)
@ -1816,6 +2126,48 @@ binary_unittest_SOURCES = binary_unittest.cc
@GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_DEPENDENCIES = alt/searched_file_test_lib.a @GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_DEPENDENCIES = alt/searched_file_test_lib.a
@GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_LDFLAGS = -Bgcctestdir/ -Lalt @GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_LDFLAGS = -Bgcctestdir/ -Lalt
@GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_LDADD = -l:searched_file_test_lib.a @GCC_TRUE@@NATIVE_LINKER_TRUE@searched_file_test_LDADD = -l:searched_file_test_lib.a
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1static_SOURCES = ifuncmain1.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1static_DEPENDENCIES = gcctestdir/ld ifuncdep1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1static_LDFLAGS = -Bgcctestdir/ -static
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1static_LDADD = ifuncdep1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1_SOURCES = ifuncmain1.c
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@NATIVE_LINKER_FALSE@ifuncmain7pic$(EXEEXT): $(ifuncmain7pic_OBJECTS) $(ifuncmain7pic_DEPENDENCIES)
@NATIVE_LINKER_FALSE@ @rm -f ifuncmain7pic$(EXEEXT)
@NATIVE_LINKER_FALSE@ $(LINK) $(ifuncmain7pic_OBJECTS) $(ifuncmain7pic_LDADD) $(LIBS)
@GCC_FALSE@ifuncmain7picstatic$(EXEEXT): $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_DEPENDENCIES)
@GCC_FALSE@ @rm -f ifuncmain7picstatic$(EXEEXT)
@GCC_FALSE@ $(LINK) $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_LDADD) $(LIBS)
@IFUNC_FALSE@ifuncmain7picstatic$(EXEEXT): $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_DEPENDENCIES)
@IFUNC_FALSE@ @rm -f ifuncmain7picstatic$(EXEEXT)
@IFUNC_FALSE@ $(LINK) $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_LDADD) $(LIBS)
@NATIVE_LINKER_FALSE@ifuncmain7picstatic$(EXEEXT): $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_DEPENDENCIES)
@NATIVE_LINKER_FALSE@ @rm -f ifuncmain7picstatic$(EXEEXT)
@NATIVE_LINKER_FALSE@ $(LINK) $(ifuncmain7picstatic_OBJECTS) $(ifuncmain7picstatic_LDADD) $(LIBS)
@GCC_FALSE@ifuncmain7pie$(EXEEXT): $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_DEPENDENCIES)
@GCC_FALSE@ @rm -f ifuncmain7pie$(EXEEXT)
@GCC_FALSE@ $(LINK) $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_LDADD) $(LIBS)
@IFUNC_FALSE@ifuncmain7pie$(EXEEXT): $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_DEPENDENCIES)
@IFUNC_FALSE@ @rm -f ifuncmain7pie$(EXEEXT)
@IFUNC_FALSE@ $(LINK) $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_LDADD) $(LIBS)
@NATIVE_LINKER_FALSE@ifuncmain7pie$(EXEEXT): $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_DEPENDENCIES)
@NATIVE_LINKER_FALSE@ @rm -f ifuncmain7pie$(EXEEXT)
@NATIVE_LINKER_FALSE@ $(LINK) $(ifuncmain7pie_OBJECTS) $(ifuncmain7pie_LDADD) $(LIBS)
ifuncmain7static$(EXEEXT): $(ifuncmain7static_OBJECTS) $(ifuncmain7static_DEPENDENCIES)
@rm -f ifuncmain7static$(EXEEXT)
$(ifuncmain7static_LINK) $(ifuncmain7static_OBJECTS) $(ifuncmain7static_LDADD) $(LIBS)
initpri1$(EXEEXT): $(initpri1_OBJECTS) $(initpri1_DEPENDENCIES) initpri1$(EXEEXT): $(initpri1_OBJECTS) $(initpri1_DEPENDENCIES)
@rm -f initpri1$(EXEEXT) @rm -f initpri1$(EXEEXT)
$(initpri1_LINK) $(initpri1_OBJECTS) $(initpri1_LDADD) $(LIBS) $(initpri1_LINK) $(initpri1_OBJECTS) $(initpri1_LDADD) $(LIBS)
@ -2297,6 +2847,32 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flagstest_o_specialfile.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flagstest_o_specialfile.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flagstest_o_specialfile_and_compress_debug_sections.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flagstest_o_specialfile_and_compress_debug_sections.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/icf_virtual_function_folding_test.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/icf_virtual_function_folding_test.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncdep2.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1pic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1picstatic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1pie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1staticpic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1staticpie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1vis.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1vispic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain1vispie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain2.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain2pic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain2picstatic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain3.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain4.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain4picstatic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain5.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain5pic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain5picstatic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain5pie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain5staticpic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain6pie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain7.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain7pic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain7picstatic.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncmain7pie.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/initpri1.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/initpri1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/justsyms_1.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/justsyms_1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/large-large.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/large-large.Po@am__quote@
@ -2886,6 +3462,66 @@ permission_test.log: permission_test$(EXEEXT)
@p='permission_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post) @p='permission_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
searched_file_test.log: searched_file_test$(EXEEXT) searched_file_test.log: searched_file_test$(EXEEXT)
@p='searched_file_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post) @p='searched_file_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1static.log: ifuncmain1static$(EXEEXT)
@p='ifuncmain1static$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1picstatic.log: ifuncmain1picstatic$(EXEEXT)
@p='ifuncmain1picstatic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1.log: ifuncmain1$(EXEEXT)
@p='ifuncmain1$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1pic.log: ifuncmain1pic$(EXEEXT)
@p='ifuncmain1pic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1vis.log: ifuncmain1vis$(EXEEXT)
@p='ifuncmain1vis$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1vispic.log: ifuncmain1vispic$(EXEEXT)
@p='ifuncmain1vispic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1staticpic.log: ifuncmain1staticpic$(EXEEXT)
@p='ifuncmain1staticpic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1pie.log: ifuncmain1pie$(EXEEXT)
@p='ifuncmain1pie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1vispie.log: ifuncmain1vispie$(EXEEXT)
@p='ifuncmain1vispie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain1staticpie.log: ifuncmain1staticpie$(EXEEXT)
@p='ifuncmain1staticpie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain2static.log: ifuncmain2static$(EXEEXT)
@p='ifuncmain2static$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain2picstatic.log: ifuncmain2picstatic$(EXEEXT)
@p='ifuncmain2picstatic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain2.log: ifuncmain2$(EXEEXT)
@p='ifuncmain2$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain2pic.log: ifuncmain2pic$(EXEEXT)
@p='ifuncmain2pic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain3.log: ifuncmain3$(EXEEXT)
@p='ifuncmain3$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain4static.log: ifuncmain4static$(EXEEXT)
@p='ifuncmain4static$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain4picstatic.log: ifuncmain4picstatic$(EXEEXT)
@p='ifuncmain4picstatic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain4.log: ifuncmain4$(EXEEXT)
@p='ifuncmain4$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5static.log: ifuncmain5static$(EXEEXT)
@p='ifuncmain5static$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5picstatic.log: ifuncmain5picstatic$(EXEEXT)
@p='ifuncmain5picstatic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5.log: ifuncmain5$(EXEEXT)
@p='ifuncmain5$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5pic.log: ifuncmain5pic$(EXEEXT)
@p='ifuncmain5pic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5staticpic.log: ifuncmain5staticpic$(EXEEXT)
@p='ifuncmain5staticpic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain5pie.log: ifuncmain5pie$(EXEEXT)
@p='ifuncmain5pie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain6pie.log: ifuncmain6pie$(EXEEXT)
@p='ifuncmain6pie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain7static.log: ifuncmain7static$(EXEEXT)
@p='ifuncmain7static$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain7picstatic.log: ifuncmain7picstatic$(EXEEXT)
@p='ifuncmain7picstatic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain7.log: ifuncmain7$(EXEEXT)
@p='ifuncmain7$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain7pic.log: ifuncmain7pic$(EXEEXT)
@p='ifuncmain7pic$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
ifuncmain7pie.log: ifuncmain7pie$(EXEEXT)
@p='ifuncmain7pie$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
.test.log: .test.log:
@p='$<'; $(am__check_pre) $(TEST_LOG_COMPILE) "$$tst" $(am__check_post) @p='$<'; $(am__check_pre) $(TEST_LOG_COMPILE) "$$tst" $(am__check_post)
@am__EXEEXT_TRUE@.test$(EXEEXT).log: @am__EXEEXT_TRUE@.test$(EXEEXT).log:
@ -3683,6 +4319,103 @@ uninstall-am:
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -o $@ -c -fPIC $< @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -o $@ -c -fPIC $<
@GCC_TRUE@@NATIVE_LINKER_TRUE@no_version_test.stdout: libno_version_test.so @GCC_TRUE@@NATIVE_LINKER_TRUE@no_version_test.stdout: libno_version_test.so
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_OBJDUMP) -h $< > $@ @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_OBJDUMP) -h $< > $@
# Test STT_GNU_IFUNC symbols.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod1.o: ifuncmod1.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod1.so: ifuncmod1.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -shared ifuncmod1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncdep1.o: ifuncmod1.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1pic.o: ifuncmain1.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1pie.o: ifuncmain1.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpie -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1picstatic: ifuncmain1pic.o ifuncmod1.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -static ifuncmain1pic.o ifuncmod1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1pic: ifuncmain1pic.o ifuncmod1.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vispic.o: ifuncmain1vis.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vispic: ifuncmain1vispic.o ifuncmod1.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1staticpic: ifuncmain1pic.o ifuncmod1.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain1pic.o ifuncmod1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1pie: ifuncmain1pie.o ifuncmod1.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain1pie.o ifuncmod1.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vispie.o: ifuncmain1vis.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpie -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vispie: ifuncmain1vispie.o ifuncmod1.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain1vispie.o ifuncmod1.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1staticpie: ifuncmain1pie.o ifuncmod1.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain1pie.o ifuncmod1.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2pic.o: ifuncmain2.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncdep2pic.o: ifuncdep2.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2picstatic: ifuncmain2pic.o ifuncdep2pic.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -static ifuncmain2pic.o ifuncdep2pic.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2pic: ifuncmain2pic.o ifuncdep2pic.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain2pic.o ifuncdep2pic.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod3.o: ifuncmod3.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod3.so: ifuncmod3.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -shared ifuncmod3.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4pic.o: ifuncmain4.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4picstatic: ifuncmain4pic.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -static ifuncmain4pic.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5pic.o: ifuncmain5.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5pie.o: ifuncmain5.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpie -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod5.o: ifuncmod5.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod5.so: ifuncmod5.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -shared ifuncmod5.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncdep5.o: ifuncmod5.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5picstatic: ifuncmain5pic.o ifuncmod5.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -static ifuncmain5pic.o ifuncmod5.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5pic: ifuncmain5pic.o ifuncmod5.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain5pic.o ifuncmod5.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5staticpic: ifuncmain5pic.o ifuncmod5.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain5pic.o ifuncmod5.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5pie: ifuncmain5pie.o ifuncmod5.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain5pie.o ifuncmod5.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain6pie.o: ifuncmain6pie.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpie -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod6.o: ifuncmod6.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmod6.so: ifuncmod6.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -shared ifuncmod6.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain6pie: ifuncmain6pie.o ifuncmod6.so gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain6pie.o ifuncmod6.so -Wl,-R,.
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain7pic.o: ifuncmain7.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpic -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain7pie.o: ifuncmain7.c
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -fpie -o $@ $<
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain7picstatic: ifuncmain7pic.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -static ifuncmain7pic.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain7pic: ifuncmain7pic.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ ifuncmain7pic.o
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain7pie: ifuncmain7pie.o gcctestdir/ld
@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -pie ifuncmain7pie.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@strong_ref_weak_def_2.o: strong_ref_weak_def_2.c @GCC_TRUE@@NATIVE_LINKER_TRUE@strong_ref_weak_def_2.o: strong_ref_weak_def_2.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -o $@ -c -fPIC $< @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -o $@ -c -fPIC $<
@GCC_TRUE@@NATIVE_LINKER_TRUE@strong_ref_weak_def_2.so: strong_ref_weak_def_2.o gcctestdir/ld @GCC_TRUE@@NATIVE_LINKER_TRUE@strong_ref_weak_def_2.so: strong_ref_weak_def_2.o gcctestdir/ld

26
gold/testsuite/ifunc-sel.h Normal file
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@ -0,0 +1,26 @@
/* Used by the elf ifunc tests. */
#ifndef ELF_IFUNC_SEL_H
#define ELF_IFUNC_SEL_H 1
extern int global;
static inline void *
ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
{
switch (global)
{
case 1:
return f1;
case -1:
return f2;
default:
return f3;
}
}
static inline void *
ifunc_one (int (*f1) (void))
{
return f1;
}
#endif

50
gold/testsuite/ifuncdep2.c Normal file
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@ -0,0 +1,50 @@
/* Test 3 STT_GNU_IFUNC symbols. */
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
{
return 1;
}
static int
minus_one (void)
{
return -1;
}
static int
zero (void)
{
return 0;
}
void * foo1_ifunc (void) __asm__ ("foo1");
__asm__(".type foo1, %gnu_indirect_function");
void *
foo1_ifunc (void)
{
return ifunc_sel (one, minus_one, zero);
}
void * foo2_ifunc (void) __asm__ ("foo2");
__asm__(".type foo2, %gnu_indirect_function");
void *
foo2_ifunc (void)
{
return ifunc_sel (minus_one, one, zero);
}
void * foo3_ifunc (void) __asm__ ("foo3");
__asm__(".type foo3, %gnu_indirect_function");
void *
foo3_ifunc (void)
{
return ifunc_sel (one, zero, minus_one);
}

64
gold/testsuite/ifuncmain1.c Normal file
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@ -0,0 +1,64 @@
/* Test STT_GNU_IFUNC symbols:
1. Direct function call.
2. Function pointer.
3. Visibility without override.
*/
#include <stdlib.h>
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
extern int foo (void);
extern int foo_protected (void);
#ifndef FOO_P
typedef int (*foo_p) (void);
#endif
foo_p foo_ptr = foo;
foo_p foo_procted_ptr = foo_protected;
extern foo_p get_foo_p (void);
extern foo_p get_foo_hidden_p (void);
extern foo_p get_foo_protected_p (void);
int
main (void)
{
foo_p p;
if (foo_ptr != foo)
abort ();
if (foo () != -1)
abort ();
if ((*foo_ptr) () != -1)
abort ();
if (foo_procted_ptr != foo_protected)
abort ();
if (foo_protected () != 0)
abort ();
if ((*foo_procted_ptr) () != 0)
abort ();
p = get_foo_p ();
if (p != foo)
abort ();
if (ret_foo != -1 || (*p) () != ret_foo)
abort ();
p = get_foo_hidden_p ();
if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden)
abort ();
p = get_foo_protected_p ();
if (p != foo_protected)
abort ();
if (ret_foo_protected != 0 || (*p) () != ret_foo_protected)
abort ();
return 0;
}

89
gold/testsuite/ifuncmain1vis.c Normal file
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@ -0,0 +1,89 @@
/* Test STT_GNU_IFUNC symbols:
1. Direct function call.
2. Function pointer.
3. Visibility with override.
*/
#include <stdlib.h>
int __attribute__ ((noinline)) foo_hidden (void);
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
extern int foo (void);
extern int foo_protected (void);
#ifndef FOO_P
typedef int (*foo_p) (void);
#endif
foo_p foo_ptr = foo;
foo_p foo_procted_ptr = foo_protected;
extern foo_p get_foo_p (void);
extern foo_p get_foo_hidden_p (void);
extern foo_p get_foo_protected_p (void);
int
__attribute__ ((noinline))
foo (void)
{
return -30;
}
int
__attribute__ ((noinline))
foo_hidden (void)
{
return -20;
}
int
__attribute__ ((noinline))
foo_protected (void)
{
return -40;
}
int
main (void)
{
foo_p p;
if (foo_ptr != foo)
abort ();
if ((*foo_ptr) () != -30)
abort ();
if (foo_procted_ptr != foo_protected)
abort ();
if ((*foo_procted_ptr) () != -40)
abort ();
p = get_foo_p ();
if (p != foo)
abort ();
if (foo () != -30)
abort ();
if (ret_foo != -30 || (*p) () != ret_foo)
abort ();
p = get_foo_hidden_p ();
if (foo_hidden () != -20)
abort ();
if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden)
abort ();
p = get_foo_protected_p ();
if (p == foo_protected)
abort ();
if (foo_protected () != -40)
abort ();
if (ret_foo_protected != 0 || (*p) () != ret_foo_protected)
abort ();
return 0;
}

14
gold/testsuite/ifuncmain2.c Normal file
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@ -0,0 +1,14 @@
/* Test calling one STT_GNU_IFUNC function with 3 different
STT_GNU_IFUNC definitions. */
#include <stdlib.h>
extern int foo1 (void);
int
main (void)
{
if (foo1 () != -1)
abort ();
return 0;
}

133
gold/testsuite/ifuncmain3.c Normal file
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@ -0,0 +1,133 @@
/* Test STT_GNU_IFUNC symbols with dlopen:
1. Direct function call.
2. Function pointer.
3. Visibility with override.
*/
#include <dlfcn.h>
#include <stdlib.h>
#include <stdio.h>
extern int __attribute__ ((noinline)) foo (void);
extern int __attribute__ ((noinline)) foo_hidden (void);
extern int __attribute__ ((noinline)) foo_protected (void);
typedef int (*foo_p) (void);
int
__attribute__ ((noinline))
foo (void)
{
return -30;
}
int
__attribute__ ((noinline))
foo_hidden (void)
{
return -20;
}
int
__attribute__ ((noinline))
foo_protected (void)
{
return -40;
}
int
main (void)
{
foo_p p;
foo_p (*f) (void);
int *ret;
void *h = dlopen ("ifuncmod3.so", RTLD_LAZY);
if (h == NULL)
{
printf ("cannot load: %s\n", dlerror ());
return 1;
}
p = dlsym (h, "foo");
if (p == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
if ((*p) () != -1)
abort ();
f = dlsym (h, "get_foo_p");
if (f == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
ret = dlsym (h, "ret_foo");
if (ret == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
p = (*f) ();
if (p != foo)
abort ();
if (foo () != -30)
abort ();
if (*ret != -30 || (*p) () != *ret)
abort ();
f = dlsym (h, "get_foo_hidden_p");
if (f == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
ret = dlsym (h, "ret_foo_hidden");
if (ret == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
p = (*f) ();
if (foo_hidden () != -20)
abort ();
if (*ret != 1 || (*p) () != *ret)
abort ();
f = dlsym (h, "get_foo_protected_p");
if (f == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
ret = dlsym (h, "ret_foo_protected");
if (ret == NULL)
{
printf ("symbol not found: %s\n", dlerror ());
return 1;
}
p = (*f) ();
if (p == foo_protected)
abort ();
if (foo_protected () != -40)
abort ();
if (*ret != 0 || (*p) () != *ret)
abort ();
if (dlclose (h) != 0)
{
printf ("cannot close: %s\n", dlerror ());
return 1;
}
return 0;
}

4
gold/testsuite/ifuncmain4.c Normal file
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@ -0,0 +1,4 @@
/* Test STT_GNU_IFUNC symbols in a single source file. */
#include "ifuncmod1.c"
#include "ifuncmain1.c"

41
gold/testsuite/ifuncmain5.c Normal file
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@ -0,0 +1,41 @@
/* Test STT_GNU_IFUNC symbols with dynamic function pointer only. */
#include <stdlib.h>
extern int foo (void);
extern int foo_protected (void);
typedef int (*foo_p) (void);
extern foo_p __attribute__ ((noinline)) get_foo (void);
extern foo_p __attribute__ ((noinline)) get_foo_protected (void);
foo_p
__attribute__ ((noinline))
get_foo (void)
{
return foo;
}
foo_p
__attribute__ ((noinline))
get_foo_protected (void)
{
return foo_protected;
}
int
main (void)
{
foo_p p;
p = get_foo ();
if ((*p) () != -1)
abort ();
p = get_foo_protected ();
if ((*p) () != 0)
abort ();
return 0;
}

64
gold/testsuite/ifuncmain6pie.c Normal file
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@ -0,0 +1,64 @@
/* Test STT_GNU_IFUNC symbols in PIE:
1. Direct function call.
2. Function pointer.
3. Reference from a shared library.
*/
#include <stdlib.h>
#include "ifunc-sel.h"
typedef int (*foo_p) (void);
extern foo_p foo_ptr;
static int
one (void)
{
return -30;
}
void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
void *
foo_ifunc (void)
{
return ifunc_one (one);
}
extern int foo (void);
extern foo_p get_foo (void);
extern foo_p get_foo_p (void);
foo_p my_foo_ptr = foo;
int
main (void)
{
foo_p p;
p = get_foo ();
if (p != foo)
abort ();
if ((*p) () != -30)
abort ();
p = get_foo_p ();
if (p != foo)
abort ();
if ((*p) () != -30)
abort ();
if (foo_ptr != foo)
abort ();
if (my_foo_ptr != foo)
abort ();
if ((*foo_ptr) () != -30)
abort ();
if ((*my_foo_ptr) () != -30)
abort ();
if (foo () != -30)
abort ();
return 0;
}

74
gold/testsuite/ifuncmain7.c Normal file
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@ -0,0 +1,74 @@
/* Test local STT_GNU_IFUNC symbols:
1. Direct function call.
2. Function pointer.
*/
#include <stdlib.h>
#include "ifunc-sel.h"
extern int foo (void);
static int
one (void)
{
return -30;
}
static void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
static void *
__attribute__ ((used))
foo_ifunc (void)
{
return ifunc_one (one);
}
typedef int (*foo_p) (void);
extern foo_p __attribute__ ((noinline)) get_foo_p (void);
extern foo_p __attribute__ ((noinline)) get_foo (void);
foo_p foo_ptr = foo;
foo_p
__attribute__ ((noinline))
get_foo_p (void)
{
return foo_ptr;
}
foo_p
__attribute__ ((noinline))
get_foo (void)
{
return foo;
}
int
main (void)
{
foo_p p;
p = get_foo ();
if (p != foo)
abort ();
if ((*p) () != -30)
abort ();
p = get_foo_p ();
if (p != foo)
abort ();
if ((*p) () != -30)
abort ();
if (foo_ptr != foo)
abort ();
if ((*foo_ptr) () != -30)
abort ();
if (foo () != -30)
abort ();
return 0;
}

95
gold/testsuite/ifuncmod1.c Normal file
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@ -0,0 +1,95 @@
/* Test STT_GNU_IFUNC symbols:
1. Direct function call.
2. Function pointer.
3. Visibility.
*/
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
{
return 1;
}
static int
minus_one (void)
{
return -1;
}
static int
zero (void)
{
return 0;
}
void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
void *
foo_ifunc (void)
{
return ifunc_sel (one, minus_one, zero);
}
void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
__asm__(".type foo_hidden, %gnu_indirect_function");
void *
foo_hidden_ifunc (void)
{
return ifunc_sel (minus_one, one, zero);
}
void * foo_protected_ifunc (void) __asm__ ("foo_protected");
__asm__(".type foo_protected, %gnu_indirect_function");
void *
foo_protected_ifunc (void)
{
return ifunc_sel (one, zero, minus_one);
}
/* Test hidden indirect function. */
__asm__(".hidden foo_hidden");
/* Test protected indirect function. */
__asm__(".protected foo_protected");
extern int foo (void);
extern int foo_hidden (void);
extern int foo_protected (void);
extern int ret_foo;
extern int ret_foo_hidden;
extern int ret_foo_protected;
#define FOO_P
typedef int (*foo_p) (void);
extern foo_p get_foo_p (void);
extern foo_p get_foo_hidden_p (void);
extern foo_p get_foo_protected_p (void);
foo_p
get_foo_p (void)
{
ret_foo = foo ();
return foo;
}
foo_p
get_foo_hidden_p (void)
{
ret_foo_hidden = foo_hidden ();
return foo_hidden;
}
foo_p
get_foo_protected_p (void)
{
ret_foo_protected = foo_protected ();
return foo_protected;
}

7
gold/testsuite/ifuncmod3.c Normal file
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@ -0,0 +1,7 @@
/* Test STT_GNU_IFUNC symbols with dlopen. */
#include "ifuncmod1.c"
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;

55
gold/testsuite/ifuncmod5.c Normal file
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@ -0,0 +1,55 @@
/* Test STT_GNU_IFUNC symbols without direct function call. */
#include "ifunc-sel.h"
int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
{
return 1;
}
static int
minus_one (void)
{
return -1;
}
static int
zero (void)
{
return 0;
}
void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
void *
foo_ifunc (void)
{
return ifunc_sel (one, minus_one, zero);
}
void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
__asm__(".type foo_hidden, %gnu_indirect_function");
void *
foo_hidden_ifunc (void)
{
return ifunc_sel (minus_one, one, zero);
}
void * foo_protected_ifunc (void) __asm__ ("foo_protected");
__asm__(".type foo_protected, %gnu_indirect_function");
void *
foo_protected_ifunc (void)
{
return ifunc_sel (one, zero, minus_one);
}
/* Test hidden indirect function. */
__asm__(".hidden foo_hidden");
/* Test protected indirect function. */
__asm__(".protected foo_protected");

22
gold/testsuite/ifuncmod6.c Normal file
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@ -0,0 +1,22 @@
/* Test STT_GNU_IFUNC symbol reference in a shared library. */
extern int foo (void);
typedef int (*foo_p) (void);
extern foo_p get_foo_p (void);
extern foo_p get_foo (void);
foo_p foo_ptr = foo;
foo_p
get_foo_p (void)
{
return foo_ptr;
}
foo_p
get_foo (void)
{
return foo;
}

485
gold/x86_64.cc
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@ -46,7 +46,115 @@ namespace
using namespace gold; using namespace gold;
class Output_data_plt_x86_64; // A class to handle the PLT data.
class Output_data_plt_x86_64 : public Output_section_data
{
public:
typedef Output_data_reloc<elfcpp::SHT_RELA, true, 64, false> Reloc_section;
Output_data_plt_x86_64(Symbol_table*, Layout*, Output_data_got<64, false>*,
Output_data_space*);
// Add an entry to the PLT.
void
add_entry(Symbol* gsym);
// Add an entry to the PLT for a local STT_GNU_IFUNC symbol.
unsigned int
add_local_ifunc_entry(Sized_relobj<64, false>* relobj,
unsigned int local_sym_index);
// Add the reserved TLSDESC_PLT entry to the PLT.
void
reserve_tlsdesc_entry(unsigned int got_offset)
{ this->tlsdesc_got_offset_ = got_offset; }
// Return true if a TLSDESC_PLT entry has been reserved.
bool
has_tlsdesc_entry() const
{ return this->tlsdesc_got_offset_ != -1U; }
// Return the GOT offset for the reserved TLSDESC_PLT entry.
unsigned int
get_tlsdesc_got_offset() const
{ return this->tlsdesc_got_offset_; }
// Return the offset of the reserved TLSDESC_PLT entry.
unsigned int
get_tlsdesc_plt_offset() const
{ return (this->count_ + 1) * plt_entry_size; }
// Return the .rela.plt section data.
Reloc_section*
rela_plt()
{ return this->rel_; }
// Return where the TLSDESC relocations should go.
Reloc_section*
rela_tlsdesc(Layout*);
// Return the number of PLT entries.
unsigned int
entry_count() const
{ return this->count_; }
// Return the offset of the first non-reserved PLT entry.
static unsigned int
first_plt_entry_offset()
{ return plt_entry_size; }
// Return the size of a PLT entry.
static unsigned int
get_plt_entry_size()
{ return plt_entry_size; }
protected:
void
do_adjust_output_section(Output_section* os);
// Write to a map file.
void
do_print_to_mapfile(Mapfile* mapfile) const
{ mapfile->print_output_data(this, _("** PLT")); }
private:
// The size of an entry in the PLT.
static const int plt_entry_size = 16;
// The first entry in the PLT.
// From the AMD64 ABI: "Unlike Intel386 ABI, this ABI uses the same
// procedure linkage table for both programs and shared objects."
static unsigned char first_plt_entry[plt_entry_size];
// Other entries in the PLT for an executable.
static unsigned char plt_entry[plt_entry_size];
// The reserved TLSDESC entry in the PLT for an executable.
static unsigned char tlsdesc_plt_entry[plt_entry_size];
// Set the final size.
void
set_final_data_size();
// Write out the PLT data.
void
do_write(Output_file*);
// The reloc section.
Reloc_section* rel_;
// The TLSDESC relocs, if necessary. These must follow the regular
// PLT relocs.
Reloc_section* tlsdesc_rel_;
// The .got section.
Output_data_got<64, false>* got_;
// The .got.plt section.
Output_data_space* got_plt_;
// The number of PLT entries.
unsigned int count_;
// Offset of the reserved TLSDESC_GOT entry when needed.
unsigned int tlsdesc_got_offset_;
};
// The x86_64 target class. // The x86_64 target class.
// See the ABI at // See the ABI at
@ -188,6 +296,15 @@ class Target_x86_64 : public Target_freebsd<64, false>
uint64_t uint64_t
do_reloc_addend(void* arg, unsigned int r_type, uint64_t addend) const; do_reloc_addend(void* arg, unsigned int r_type, uint64_t addend) const;
// Return the PLT section.
Output_data*
do_plt_section_for_global(const Symbol*) const
{ return this->plt_section(); }
Output_data*
do_plt_section_for_local(const Relobj*, unsigned int) const
{ return this->plt_section(); }
// Adjust -fstack-split code which calls non-stack-split code. // Adjust -fstack-split code which calls non-stack-split code.
void void
do_calls_non_split(Relobj* object, unsigned int shndx, do_calls_non_split(Relobj* object, unsigned int shndx,
@ -291,6 +408,9 @@ class Target_x86_64 : public Target_freebsd<64, false>
inline bool inline bool
possible_function_pointer_reloc(unsigned int r_type); possible_function_pointer_reloc(unsigned int r_type);
bool
reloc_needs_plt_for_ifunc(Sized_relobj<64, false>*, unsigned int r_type);
// Whether we have issued an error about a non-PIC compilation. // Whether we have issued an error about a non-PIC compilation.
bool issued_non_pic_error_; bool issued_non_pic_error_;
}; };
@ -441,6 +561,12 @@ class Target_x86_64 : public Target_freebsd<64, false>
void void
make_plt_entry(Symbol_table*, Layout*, Symbol*); make_plt_entry(Symbol_table*, Layout*, Symbol*);
// Create a PLT entry for a local STT_GNU_IFUNC symbol.
void
make_local_ifunc_plt_entry(Symbol_table*, Layout*,
Sized_relobj<64, false>* relobj,
unsigned int local_sym_index);
// Define the _TLS_MODULE_BASE_ symbol in the TLS segment. // Define the _TLS_MODULE_BASE_ symbol in the TLS segment.
void void
define_tls_base_symbol(Symbol_table*, Layout*); define_tls_base_symbol(Symbol_table*, Layout*);
@ -641,116 +767,12 @@ Target_x86_64::rela_dyn_section(Layout* layout)
return this->rela_dyn_; return this->rela_dyn_;
} }
// A class to handle the PLT data.
class Output_data_plt_x86_64 : public Output_section_data
{
public:
typedef Output_data_reloc<elfcpp::SHT_RELA, true, 64, false> Reloc_section;
Output_data_plt_x86_64(Layout*, Output_data_got<64, false>*,
Output_data_space*);
// Add an entry to the PLT.
void
add_entry(Symbol* gsym);
// Add the reserved TLSDESC_PLT entry to the PLT.
void
reserve_tlsdesc_entry(unsigned int got_offset)
{ this->tlsdesc_got_offset_ = got_offset; }
// Return true if a TLSDESC_PLT entry has been reserved.
bool
has_tlsdesc_entry() const
{ return this->tlsdesc_got_offset_ != -1U; }
// Return the GOT offset for the reserved TLSDESC_PLT entry.
unsigned int
get_tlsdesc_got_offset() const
{ return this->tlsdesc_got_offset_; }
// Return the offset of the reserved TLSDESC_PLT entry.
unsigned int
get_tlsdesc_plt_offset() const
{ return (this->count_ + 1) * plt_entry_size; }
// Return the .rela.plt section data.
const Reloc_section*
rela_plt() const
{ return this->rel_; }
// Return where the TLSDESC relocations should go.
Reloc_section*
rela_tlsdesc(Layout*);
// Return the number of PLT entries.
unsigned int
entry_count() const
{ return this->count_; }
// Return the offset of the first non-reserved PLT entry.
static unsigned int
first_plt_entry_offset()
{ return plt_entry_size; }
// Return the size of a PLT entry.
static unsigned int
get_plt_entry_size()
{ return plt_entry_size; }
protected:
void
do_adjust_output_section(Output_section* os);
// Write to a map file.
void
do_print_to_mapfile(Mapfile* mapfile) const
{ mapfile->print_output_data(this, _("** PLT")); }
private:
// The size of an entry in the PLT.
static const int plt_entry_size = 16;
// The first entry in the PLT.
// From the AMD64 ABI: "Unlike Intel386 ABI, this ABI uses the same
// procedure linkage table for both programs and shared objects."
static unsigned char first_plt_entry[plt_entry_size];
// Other entries in the PLT for an executable.
static unsigned char plt_entry[plt_entry_size];
// The reserved TLSDESC entry in the PLT for an executable.
static unsigned char tlsdesc_plt_entry[plt_entry_size];
// Set the final size.
void
set_final_data_size();
// Write out the PLT data.
void
do_write(Output_file*);
// The reloc section.
Reloc_section* rel_;
// The TLSDESC relocs, if necessary. These must follow the regular
// PLT relocs.
Reloc_section* tlsdesc_rel_;
// The .got section.
Output_data_got<64, false>* got_;
// The .got.plt section.
Output_data_space* got_plt_;
// The number of PLT entries.
unsigned int count_;
// Offset of the reserved TLSDESC_GOT entry when needed.
unsigned int tlsdesc_got_offset_;
};
// Create the PLT section. The ordinary .got section is an argument, // Create the PLT section. The ordinary .got section is an argument,
// since we need to refer to the start. We also create our own .got // since we need to refer to the start. We also create our own .got
// section just for PLT entries. // section just for PLT entries.
Output_data_plt_x86_64::Output_data_plt_x86_64(Layout* layout, Output_data_plt_x86_64::Output_data_plt_x86_64(Symbol_table* symtab,
Layout* layout,
Output_data_got<64, false>* got, Output_data_got<64, false>* got,
Output_data_space* got_plt) Output_data_space* got_plt)
: Output_section_data(8), tlsdesc_rel_(NULL), got_(got), got_plt_(got_plt), : Output_section_data(8), tlsdesc_rel_(NULL), got_(got), got_plt_(got_plt),
@ -760,6 +782,24 @@ Output_data_plt_x86_64::Output_data_plt_x86_64(Layout* layout,
layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
elfcpp::SHF_ALLOC, this->rel_, elfcpp::SHF_ALLOC, this->rel_,
ORDER_DYNAMIC_PLT_RELOCS, false); ORDER_DYNAMIC_PLT_RELOCS, false);
if (parameters->doing_static_link())
{
// A statically linked executable will only have a .rela.plt
// section to hold R_X86_64_IRELATIVE relocs for STT_GNU_IFUNC
// symbols. The library will use these symbols to locate the
// IRELATIVE relocs at program startup time.
symtab->define_in_output_data("__rela_iplt_start", NULL,
Symbol_table::PREDEFINED,
this->rel_, 0, 0, elfcpp::STT_NOTYPE,
elfcpp::STB_GLOBAL, elfcpp::STV_HIDDEN,
0, false, true);
symtab->define_in_output_data("__rela_iplt_end", NULL,
Symbol_table::PREDEFINED,
this->rel_, 0, 0, elfcpp::STT_NOTYPE,
elfcpp::STB_GLOBAL, elfcpp::STV_HIDDEN,
0, true, true);
}
} }
void void
@ -789,15 +829,46 @@ Output_data_plt_x86_64::add_entry(Symbol* gsym)
this->got_plt_->set_current_data_size(got_offset + 8); this->got_plt_->set_current_data_size(got_offset + 8);
// Every PLT entry needs a reloc. // Every PLT entry needs a reloc.
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& gsym->can_use_relative_reloc(false))
this->rel_->add_symbolless_global_addend(gsym, elfcpp::R_X86_64_IRELATIVE,
this->got_plt_, got_offset, 0);
else
{
gsym->set_needs_dynsym_entry(); gsym->set_needs_dynsym_entry();
this->rel_->add_global(gsym, elfcpp::R_X86_64_JUMP_SLOT, this->got_plt_, this->rel_->add_global(gsym, elfcpp::R_X86_64_JUMP_SLOT, this->got_plt_,
got_offset, 0); got_offset, 0);
}
// Note that we don't need to save the symbol. The contents of the // Note that we don't need to save the symbol. The contents of the
// PLT are independent of which symbols are used. The symbols only // PLT are independent of which symbols are used. The symbols only
// appear in the relocations. // appear in the relocations.
} }
// Add an entry to the PLT for a local STT_GNU_IFUNC symbol. Return
// the PLT offset.
unsigned int
Output_data_plt_x86_64::add_local_ifunc_entry(Sized_relobj<64, false>* relobj,
unsigned int local_sym_index)
{
unsigned int plt_offset = (this->count_ + 1) * plt_entry_size;
++this->count_;
section_offset_type got_offset = this->got_plt_->current_data_size();
// Every PLT entry needs a GOT entry which points back to the PLT
// entry.
this->got_plt_->set_current_data_size(got_offset + 8);
// Every PLT entry needs a reloc.
this->rel_->add_symbolless_local_addend(relobj, local_sym_index,
elfcpp::R_X86_64_IRELATIVE,
this->got_plt_, got_offset, 0);
return plt_offset;
}
// Return where the TLSDESC relocations should go, creating it if // Return where the TLSDESC relocations should go, creating it if
// necessary. These follow the JUMP_SLOT relocations. // necessary. These follow the JUMP_SLOT relocations.
@ -968,12 +1039,16 @@ Target_x86_64::make_plt_section(Symbol_table* symtab, Layout* layout)
// Create the GOT sections first. // Create the GOT sections first.
this->got_section(symtab, layout); this->got_section(symtab, layout);
this->plt_ = new Output_data_plt_x86_64(layout, this->got_, this->plt_ = new Output_data_plt_x86_64(symtab, layout, this->got_,
this->got_plt_); this->got_plt_);
layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
(elfcpp::SHF_ALLOC (elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR), | elfcpp::SHF_EXECINSTR),
this->plt_, ORDER_PLT, false); this->plt_, ORDER_PLT, false);
// Make the sh_info field of .rela.plt point to .plt.
Output_section* rela_plt_os = this->plt_->rela_plt()->output_section();
rela_plt_os->set_info_section(this->plt_->output_section());
} }
} }
@ -1000,6 +1075,22 @@ Target_x86_64::make_plt_entry(Symbol_table* symtab, Layout* layout,
this->plt_->add_entry(gsym); this->plt_->add_entry(gsym);
} }
// Make a PLT entry for a local STT_GNU_IFUNC symbol.
void
Target_x86_64::make_local_ifunc_plt_entry(Symbol_table* symtab, Layout* layout,
Sized_relobj<64, false>* relobj,
unsigned int local_sym_index)
{
if (relobj->local_has_plt_offset(local_sym_index))
return;
if (this->plt_ == NULL)
this->make_plt_section(symtab, layout);
unsigned int plt_offset = this->plt_->add_local_ifunc_entry(relobj,
local_sym_index);
relobj->set_local_plt_offset(local_sym_index, plt_offset);
}
// Return the number of entries in the PLT. // Return the number of entries in the PLT.
unsigned int unsigned int
@ -1172,6 +1263,7 @@ Target_x86_64::Scan::check_non_pic(Relobj* object, unsigned int r_type)
{ {
// These are the relocation types supported by glibc for x86_64. // These are the relocation types supported by glibc for x86_64.
case elfcpp::R_X86_64_RELATIVE: case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT: case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_DTPMOD64: case elfcpp::R_X86_64_DTPMOD64:
@ -1200,6 +1292,72 @@ Target_x86_64::Scan::check_non_pic(Relobj* object, unsigned int r_type)
} }
} }
// Return whether we need to make a PLT entry for a relocation of the
// given type against a STT_GNU_IFUNC symbol.
bool
Target_x86_64::Scan::reloc_needs_plt_for_ifunc(Sized_relobj<64, false>* object,
unsigned int r_type)
{
switch (r_type)
{
case elfcpp::R_X86_64_NONE:
case elfcpp::R_X86_64_GNU_VTINHERIT:
case elfcpp::R_X86_64_GNU_VTENTRY:
return false;
case elfcpp::R_X86_64_64:
case elfcpp::R_X86_64_32:
case elfcpp::R_X86_64_32S:
case elfcpp::R_X86_64_16:
case elfcpp::R_X86_64_8:
case elfcpp::R_X86_64_PC64:
case elfcpp::R_X86_64_PC32:
case elfcpp::R_X86_64_PC16:
case elfcpp::R_X86_64_PC8:
case elfcpp::R_X86_64_PLT32:
case elfcpp::R_X86_64_GOTPC32:
case elfcpp::R_X86_64_GOTOFF64:
case elfcpp::R_X86_64_GOTPC64:
case elfcpp::R_X86_64_PLTOFF64:
case elfcpp::R_X86_64_GOT64:
case elfcpp::R_X86_64_GOT32:
case elfcpp::R_X86_64_GOTPCREL64:
case elfcpp::R_X86_64_GOTPCREL:
case elfcpp::R_X86_64_GOTPLT64:
return true;
case elfcpp::R_X86_64_COPY:
case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
case elfcpp::R_X86_64_TPOFF64:
case elfcpp::R_X86_64_DTPMOD64:
case elfcpp::R_X86_64_TLSDESC:
// We will give an error later.
return false;
case elfcpp::R_X86_64_TLSGD:
case elfcpp::R_X86_64_GOTPC32_TLSDESC:
case elfcpp::R_X86_64_TLSDESC_CALL:
case elfcpp::R_X86_64_TLSLD:
case elfcpp::R_X86_64_DTPOFF32:
case elfcpp::R_X86_64_DTPOFF64:
case elfcpp::R_X86_64_GOTTPOFF:
case elfcpp::R_X86_64_TPOFF32:
gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"),
object->name().c_str(), r_type);
return false;
case elfcpp::R_X86_64_SIZE32:
case elfcpp::R_X86_64_SIZE64:
default:
// We will give an error later.
return false;
}
}
// Scan a relocation for a local symbol. // Scan a relocation for a local symbol.
inline void inline void
@ -1213,6 +1371,14 @@ Target_x86_64::Scan::local(Symbol_table* symtab,
unsigned int r_type, unsigned int r_type,
const elfcpp::Sym<64, false>& lsym) const elfcpp::Sym<64, false>& lsym)
{ {
// A local STT_GNU_IFUNC symbol may require a PLT entry.
if (lsym.get_st_type() == elfcpp::STT_GNU_IFUNC
&& this->reloc_needs_plt_for_ifunc(object, r_type))
{
unsigned int r_sym = elfcpp::elf_r_sym<64>(reloc.get_r_info());
target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym);
}
switch (r_type) switch (r_type)
{ {
case elfcpp::R_X86_64_NONE: case elfcpp::R_X86_64_NONE:
@ -1306,7 +1472,16 @@ Target_x86_64::Scan::local(Symbol_table* symtab,
// The symbol requires a GOT entry. // The symbol requires a GOT entry.
Output_data_got<64, false>* got = target->got_section(symtab, layout); Output_data_got<64, false>* got = target->got_section(symtab, layout);
unsigned int r_sym = elfcpp::elf_r_sym<64>(reloc.get_r_info()); unsigned int r_sym = elfcpp::elf_r_sym<64>(reloc.get_r_info());
if (got->add_local(object, r_sym, GOT_TYPE_STANDARD))
// For a STT_GNU_IFUNC symbol we want the PLT offset. That
// lets function pointers compare correctly with shared
// libraries. Otherwise we would need an IRELATIVE reloc.
bool is_new;
if (lsym.get_st_type() == elfcpp::STT_GNU_IFUNC)
is_new = got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD);
else
is_new = got->add_local(object, r_sym, GOT_TYPE_STANDARD);
if (is_new)
{ {
// If we are generating a shared object, we need to add a // If we are generating a shared object, we need to add a
// dynamic relocation for this symbol's GOT entry. // dynamic relocation for this symbol's GOT entry.
@ -1315,9 +1490,13 @@ Target_x86_64::Scan::local(Symbol_table* symtab,
Reloc_section* rela_dyn = target->rela_dyn_section(layout); Reloc_section* rela_dyn = target->rela_dyn_section(layout);
// R_X86_64_RELATIVE assumes a 64-bit relocation. // R_X86_64_RELATIVE assumes a 64-bit relocation.
if (r_type != elfcpp::R_X86_64_GOT32) if (r_type != elfcpp::R_X86_64_GOT32)
rela_dyn->add_local_relative( {
object, r_sym, elfcpp::R_X86_64_RELATIVE, got, unsigned int got_offset =
object->local_got_offset(r_sym, GOT_TYPE_STANDARD), 0); object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
rela_dyn->add_local_relative(object, r_sym,
elfcpp::R_X86_64_RELATIVE,
got, got_offset, 0);
}
else else
{ {
this->check_non_pic(object, r_type); this->check_non_pic(object, r_type);
@ -1338,6 +1517,7 @@ Target_x86_64::Scan::local(Symbol_table* symtab,
case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT: case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_RELATIVE: case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
// These are outstanding tls relocs, which are unexpected when linking // These are outstanding tls relocs, which are unexpected when linking
case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_TPOFF64:
case elfcpp::R_X86_64_DTPMOD64: case elfcpp::R_X86_64_DTPMOD64:
@ -1571,6 +1751,11 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
unsigned int r_type, unsigned int r_type,
Symbol* gsym) Symbol* gsym)
{ {
// A STT_GNU_IFUNC symbol may require a PLT entry.
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& this->reloc_needs_plt_for_ifunc(object, r_type))
target->make_plt_entry(symtab, layout, gsym);
switch (r_type) switch (r_type)
{ {
case elfcpp::R_X86_64_NONE: case elfcpp::R_X86_64_NONE:
@ -1603,13 +1788,33 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
target->copy_reloc(symtab, layout, object, target->copy_reloc(symtab, layout, object,
data_shndx, output_section, gsym, reloc); data_shndx, output_section, gsym, reloc);
} }
else if (r_type == elfcpp::R_X86_64_64
&& gsym->type() == elfcpp::STT_GNU_IFUNC
&& gsym->can_use_relative_reloc(false)
&& !gsym->is_from_dynobj()
&& !gsym->is_undefined()
&& !gsym->is_preemptible())
{
// Use an IRELATIVE reloc for a locally defined
// STT_GNU_IFUNC symbol. This makes a function
// address in a PIE executable match the address in a
// shared library that it links against.
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
unsigned int r_type = elfcpp::R_X86_64_IRELATIVE;
rela_dyn->add_symbolless_global_addend(gsym, r_type,
output_section, object,
data_shndx,
reloc.get_r_offset(),
reloc.get_r_addend());
}
else if (r_type == elfcpp::R_X86_64_64 else if (r_type == elfcpp::R_X86_64_64
&& gsym->can_use_relative_reloc(false)) && gsym->can_use_relative_reloc(false))
{ {
Reloc_section* rela_dyn = target->rela_dyn_section(layout); Reloc_section* rela_dyn = target->rela_dyn_section(layout);
rela_dyn->add_global_relative(gsym, elfcpp::R_X86_64_RELATIVE, rela_dyn->add_global_relative(gsym, elfcpp::R_X86_64_RELATIVE,
output_section, object, output_section, object,
data_shndx, reloc.get_r_offset(), data_shndx,
reloc.get_r_offset(),
reloc.get_r_addend()); reloc.get_r_addend());
} }
else else
@ -1664,7 +1869,13 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
// The symbol requires a GOT entry. // The symbol requires a GOT entry.
Output_data_got<64, false>* got = target->got_section(symtab, layout); Output_data_got<64, false>* got = target->got_section(symtab, layout);
if (gsym->final_value_is_known()) if (gsym->final_value_is_known())
{
// For a STT_GNU_IFUNC symbol we want the PLT address.
if (gsym->type() == elfcpp::STT_GNU_IFUNC)
got->add_global_plt(gsym, GOT_TYPE_STANDARD);
else
got->add_global(gsym, GOT_TYPE_STANDARD); got->add_global(gsym, GOT_TYPE_STANDARD);
}
else else
{ {
// If this symbol is not fully resolved, we need to add a // If this symbol is not fully resolved, we need to add a
@ -1672,15 +1883,35 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
Reloc_section* rela_dyn = target->rela_dyn_section(layout); Reloc_section* rela_dyn = target->rela_dyn_section(layout);
if (gsym->is_from_dynobj() if (gsym->is_from_dynobj()
|| gsym->is_undefined() || gsym->is_undefined()
|| gsym->is_preemptible()) || gsym->is_preemptible()
|| (gsym->type() == elfcpp::STT_GNU_IFUNC
&& parameters->options().output_is_position_independent()))
got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn, got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
elfcpp::R_X86_64_GLOB_DAT); elfcpp::R_X86_64_GLOB_DAT);
else else
{ {
if (got->add_global(gsym, GOT_TYPE_STANDARD)) // For a STT_GNU_IFUNC symbol we want to write the PLT
rela_dyn->add_global_relative( // offset into the GOT, so that function pointer
gsym, elfcpp::R_X86_64_RELATIVE, got, // comparisons work correctly.
gsym->got_offset(GOT_TYPE_STANDARD), 0); bool is_new;
if (gsym->type() != elfcpp::STT_GNU_IFUNC)
is_new = got->add_global(gsym, GOT_TYPE_STANDARD);
else
{
is_new = got->add_global_plt(gsym, GOT_TYPE_STANDARD);
// Tell the dynamic linker to use the PLT address
// when resolving relocations.
if (gsym->is_from_dynobj()
&& !parameters->options().shared())
gsym->set_needs_dynsym_value();
}
if (is_new)
{
unsigned int got_off = gsym->got_offset(GOT_TYPE_STANDARD);
rela_dyn->add_global_relative(gsym,
elfcpp::R_X86_64_RELATIVE,
got, got_off, 0);
}
} }
} }
// For GOTPLT64, we also need a PLT entry (but only if the // For GOTPLT64, we also need a PLT entry (but only if the
@ -1723,6 +1954,7 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT: case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_RELATIVE: case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
// These are outstanding tls relocs, which are unexpected when linking // These are outstanding tls relocs, which are unexpected when linking
case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_TPOFF64:
case elfcpp::R_X86_64_DTPMOD64: case elfcpp::R_X86_64_DTPMOD64:
@ -2007,7 +2239,9 @@ Target_x86_64::Relocate::relocate(const Relocate_info<64, false>* relinfo,
} }
} }
// Pick the value to use for symbols defined in shared objects. const Sized_relobj<64, false>* object = relinfo->object;
// Pick the value to use for symbols defined in the PLT.
Symbol_value<64> symval; Symbol_value<64> symval;
if (gsym != NULL if (gsym != NULL
&& gsym->use_plt_offset(r_type == elfcpp::R_X86_64_PC64 && gsym->use_plt_offset(r_type == elfcpp::R_X86_64_PC64
@ -2019,8 +2253,17 @@ Target_x86_64::Relocate::relocate(const Relocate_info<64, false>* relinfo,
+ gsym->plt_offset()); + gsym->plt_offset());
psymval = &symval; psymval = &symval;
} }
else if (gsym == NULL && psymval->is_ifunc_symbol())
{
unsigned int r_sym = elfcpp::elf_r_sym<64>(rela.get_r_info());
if (object->local_has_plt_offset(r_sym))
{
symval.set_output_value(target->plt_section()->address()
+ object->local_plt_offset(r_sym));
psymval = &symval;
}
}
const Sized_relobj<64, false>* object = relinfo->object;
const elfcpp::Elf_Xword addend = rela.get_r_addend(); const elfcpp::Elf_Xword addend = rela.get_r_addend();
// Get the GOT offset if needed. // Get the GOT offset if needed.
@ -2196,6 +2439,7 @@ Target_x86_64::Relocate::relocate(const Relocate_info<64, false>* relinfo,
case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT: case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_RELATIVE: case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
// These are outstanding tls relocs, which are unexpected when linking // These are outstanding tls relocs, which are unexpected when linking
case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_TPOFF64:
case elfcpp::R_X86_64_DTPMOD64: case elfcpp::R_X86_64_DTPMOD64:
@ -2789,6 +3033,7 @@ Target_x86_64::Relocatable_size_for_reloc::get_size_for_reloc(
case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_GLOB_DAT:
case elfcpp::R_X86_64_JUMP_SLOT: case elfcpp::R_X86_64_JUMP_SLOT:
case elfcpp::R_X86_64_RELATIVE: case elfcpp::R_X86_64_RELATIVE:
case elfcpp::R_X86_64_IRELATIVE:
// These are outstanding tls relocs, which are unexpected when linking // These are outstanding tls relocs, which are unexpected when linking
case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_TPOFF64:
case elfcpp::R_X86_64_DTPMOD64: case elfcpp::R_X86_64_DTPMOD64: