From: Ian Lance Taylor Date: Thu, 19 Aug 2010 22:50:16 +0000 (+0000) Subject: PR 10893 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7223e9ca5a5ab5eecd2d14328ceade93bcb43f3d;p=binutils-gdb.git 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. --- diff --git a/gold/ChangeLog b/gold/ChangeLog index 8b600b2a2df..83eef92a373 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,104 @@ +2010-08-19 Ian Lance Taylor + + 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 * incremental.cc diff --git a/gold/configure b/gold/configure index eb8f01ed7b9..0259c2fe59d 100755 --- a/gold/configure +++ b/gold/configure @@ -602,6 +602,8 @@ LFS_CFLAGS WARN_CXXFLAGS NO_WERROR WARN_CFLAGS +IFUNC_FALSE +IFUNC_TRUE RANDOM_SEED_CFLAGS CONSTRUCTOR_PRIORITY_FALSE CONSTRUCTOR_PRIORITY_TRUE @@ -1913,8 +1915,10 @@ $as_echo "$ac_res" >&6; } ac_fn_c_check_decl () { 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_echo_n "checking whether $2 is declared... " >&6; } + as_decl_name=`echo $2|sed 's/ *(.*//'` + 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 : $as_echo_n "(cached) " >&6 else @@ -1924,8 +1928,12 @@ $4 int main () { -#ifndef $2 - (void) $2; +#ifndef $as_decl_name +#ifdef __cplusplus + (void) $as_decl_use; +#else + (void) $as_decl_name; +#endif #endif ; @@ -2189,8 +2197,10 @@ $as_echo "$ac_res" >&6; } ac_fn_cxx_check_decl () { 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_echo_n "checking whether $2 is declared... " >&6; } + as_decl_name=`echo $2|sed 's/ *(.*//'` + 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 : $as_echo_n "(cached) " >&6 else @@ -2200,8 +2210,12 @@ $4 int main () { -#ifndef $2 - (void) $2; +#ifndef $as_decl_name +#ifdef __cplusplus + (void) $as_decl_use; +#else + (void) $as_decl_name; +#endif #endif ; @@ -6335,6 +6349,41 @@ if test "$gold_cv_c_random_seed" = "yes"; then 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 +#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" cat confdefs.h - <<_ACEOF >conftest.$ac_ext @@ -7206,6 +7255,10 @@ if test -z "${CONSTRUCTOR_PRIORITY_TRUE}" && test -z "${CONSTRUCTOR_PRIORITY_FAL as_fn_error "conditional \"CONSTRUCTOR_PRIORITY\" was never defined. Usually this means the macro was only invoked conditionally." "$LINENO" 5 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 "${HAVE_ZLIB_FALSE}"; then as_fn_error "conditional \"HAVE_ZLIB\" was never defined. Usually this means the macro was only invoked conditionally." "$LINENO" 5 diff --git a/gold/configure.ac b/gold/configure.ac index f1c4378e229..ba6bd172353 100644 --- a/gold/configure.ac +++ b/gold/configure.ac @@ -359,6 +359,20 @@ if test "$gold_cv_c_random_seed" = "yes"; then fi AC_SUBST(RANDOM_SEED_CFLAGS) +dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc +dnl 2.11 or later. +AC_CACHE_CHECK([for glibc >= 2.11], [gold_cv_lib_glibc2_11], +[AC_COMPILE_IFELSE([ +#include +#if !defined __GLIBC__ +error +#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11) +error +#endif +], [gold_cv_lib_glibc2_11=yes], [gold_cv_lib_glibc2_11=no])]) + +AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc2_11" = "yes") + AM_BINUTILS_WARNINGS WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'` diff --git a/gold/defstd.cc b/gold/defstd.cc index e09d8142ba7..a7a57e44f56 100644 --- a/gold/defstd.cc +++ b/gold/defstd.cc @@ -1,6 +1,6 @@ // 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 . // This file is part of gold. @@ -108,54 +108,6 @@ const Define_symbol_in_section in_section[] = true, // offset_is_from_end 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", // output_section diff --git a/gold/i386.cc b/gold/i386.cc index b27296769a7..56d405bc8a8 100644 --- a/gold/i386.cc +++ b/gold/i386.cc @@ -45,7 +45,113 @@ namespace 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 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_ifuncs_; + // Local STT_GNU_IFUNC symbols. + std::vector local_ifuncs_; +}; // The i386 target class. // 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 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. bool 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 possible_function_pointer_reloc(unsigned int r_type); + bool + reloc_needs_plt_for_ifunc(Sized_relobj<32, false>*, unsigned int r_type); + static void 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_; } + // Create the PLT section. + void + make_plt_section(Symbol_table* symtab, Layout* layout); + // Create a PLT entry for a global symbol. void 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. void define_tls_base_symbol(Symbol_table*, Layout*); @@ -586,100 +714,38 @@ Target_i386::rel_dyn_section(Layout* layout) 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 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, // since we need to refer to the start. We also create our own .got // 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_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); layout->add_output_section_data(".rel.plt", elfcpp::SHT_REL, elfcpp::SHF_ALLOC, this->rel_, 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 @@ -711,15 +777,58 @@ Output_data_plt_i386::add_entry(Symbol* gsym) this->got_plt_->set_current_data_size(got_offset + 4); // Every PLT entry needs a reloc. - gsym->set_needs_dynsym_entry(); - this->rel_->add_global(gsym, elfcpp::R_386_JUMP_SLOT, this->got_plt_, - got_offset); + 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(); + this->rel_->add_global(gsym, elfcpp::R_386_JUMP_SLOT, this->got_plt_, + got_offset); + } // 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 // 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 // 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); } + // 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::const_iterator p = + this->global_ifuncs_.begin(); + p != this->global_ifuncs_.end(); + ++p) + { + const Sized_symbol<32>* ssym = + static_cast*>(p->sym); + elfcpp::Swap<32, false>::writeval(got_view + p->got_offset, + ssym->value()); + } + + for (std::vector::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(pov - oview) == oview_size); gold_assert(static_cast(got_pov - got_view) == got_size); @@ -865,29 +1000,56 @@ Output_data_plt_i386::do_write(Output_file* of) of->write_output_view(got_file_offset, got_size, got_view); } -// Create a PLT entry for a global symbol. +// Create the PLT section. void -Target_i386::make_plt_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym) +Target_i386::make_plt_section(Symbol_table* symtab, Layout* layout) { - if (gsym->has_plt_offset()) - return; - if (this->plt_ == NULL) { // Create the GOT sections first. this->got_section(symtab, layout); - this->plt_ = new Output_data_plt_i386(layout, this->got_plt_); + 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. +void +Target_i386::make_plt_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym) +{ + if (gsym->has_plt_offset()) + return; + if (this->plt_ == NULL) + this->make_plt_section(symtab, layout); 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. unsigned int @@ -1035,6 +1197,75 @@ Target_i386::Scan::unsupported_reloc_local(Sized_relobj<32, false>* object, 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. inline void @@ -1048,6 +1279,14 @@ Target_i386::Scan::local(Symbol_table* symtab, unsigned int r_type, 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) { case elfcpp::R_386_NONE: @@ -1066,9 +1305,9 @@ Target_i386::Scan::local(Symbol_table* symtab, { Reloc_section* rel_dyn = target->rel_dyn_section(layout); unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info()); - rel_dyn->add_local_relative(object, r_sym, elfcpp::R_386_RELATIVE, - output_section, data_shndx, - reloc.get_r_offset()); + rel_dyn->add_local_relative(object, r_sym, elfcpp::R_386_RELATIVE, + output_section, data_shndx, + reloc.get_r_offset()); } break; @@ -1125,17 +1364,27 @@ Target_i386::Scan::local(Symbol_table* symtab, // The symbol requires a GOT entry. Output_data_got<32, false>* got = target->got_section(symtab, layout); 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 // dynamic RELATIVE relocation for this symbol's GOT entry. if (parameters->options().output_is_position_independent()) { Reloc_section* rel_dyn = target->rel_dyn_section(layout); - unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info()); - rel_dyn->add_local_relative( - object, r_sym, elfcpp::R_386_RELATIVE, got, - object->local_got_offset(r_sym, GOT_TYPE_STANDARD)); + unsigned int got_offset = + object->local_got_offset(r_sym, GOT_TYPE_STANDARD); + rel_dyn->add_local_relative(object, r_sym, + 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_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: @@ -1394,6 +1644,11 @@ Target_i386::Scan::global(Symbol_table* symtab, unsigned int r_type, 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) { case elfcpp::R_386_NONE: @@ -1424,13 +1679,31 @@ Target_i386::Scan::global(Symbol_table* symtab, target->copy_reloc(symtab, layout, object, 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 && gsym->can_use_relative_reloc(false)) { Reloc_section* rel_dyn = target->rel_dyn_section(layout); - rel_dyn->add_global_relative(gsym, elfcpp::R_386_RELATIVE, - output_section, object, - data_shndx, reloc.get_r_offset()); + rel_dyn->add_global_relative(gsym, elfcpp::R_386_RELATIVE, + output_section, object, + data_shndx, reloc.get_r_offset()); } else { @@ -1485,7 +1758,13 @@ Target_i386::Scan::global(Symbol_table* symtab, // The symbol requires a GOT entry. Output_data_got<32, false>* got = target->got_section(symtab, layout); if (gsym->final_value_is_known()) - got->add_global(gsym, GOT_TYPE_STANDARD); + { + // 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); + } else { // 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); if (gsym->is_from_dynobj() || 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, rel_dyn, elfcpp::R_386_GLOB_DAT); else { - if (got->add_global(gsym, GOT_TYPE_STANDARD)) - rel_dyn->add_global_relative( - gsym, elfcpp::R_386_RELATIVE, got, - gsym->got_offset(GOT_TYPE_STANDARD)); + // For a STT_GNU_IFUNC symbol we want to write the PLT + // offset into the GOT, so that function pointer + // comparisons work correctly. + 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_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: @@ -1866,19 +2165,41 @@ 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. Symbol_value<32> symval; if (gsym != NULL - && gsym->use_plt_offset(r_type == elfcpp::R_386_PC8 - || r_type == elfcpp::R_386_PC16 - || r_type == elfcpp::R_386_PC32)) + && 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 + || r_type == elfcpp::R_386_PC16 + || r_type == elfcpp::R_386_PC32)) { symval.set_output_value(target->plt_section()->address() + gsym->plt_offset()); psymval = &symval; } - - const Sized_relobj<32, false>* object = relinfo->object; + else if (gsym == NULL && psymval->is_ifunc_symbol()) + { + 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. // 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_JUMP_SLOT: case elfcpp::R_386_RELATIVE: + case elfcpp::R_386_IRELATIVE: // These are outstanding tls relocs, which are unexpected when // linking. 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_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: diff --git a/gold/object.cc b/gold/object.cc index b3d987056c7..5250fa3c2c4 100644 --- a/gold/object.cc +++ b/gold/object.cc @@ -391,6 +391,7 @@ Sized_relobj::Sized_relobj( local_dynsym_offset_(0), local_values_(), local_got_offsets_(), + local_plt_offsets_(), kept_comdat_sections_(), has_eh_frame_(false), discarded_eh_frame_shndx_(-1U), @@ -1690,6 +1691,41 @@ Sized_relobj::do_should_include_member(Symbol_table* symtab, return Archive::SHOULD_INCLUDE_UNKNOWN; } +// Return whether the local symbol SYMNDX has a PLT offset. + +template +bool +Sized_relobj::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 +unsigned int +Sized_relobj::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 +void +Sized_relobj::set_local_plt_offset(unsigned int symndx, + unsigned int plt_offset) +{ + std::pair 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 // *POOL and *DYNPOOL, and we store the symbol value in // THIS->LOCAL_VALUES_. This function is always called from a @@ -1756,6 +1792,8 @@ Sized_relobj::do_count_local_symbols(Stringpool* pool, lv.set_is_section_symbol(); else if (sym.get_st_type() == elfcpp::STT_TLS) 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(). lv.set_input_value(sym.get_st_value()); @@ -2065,7 +2103,6 @@ Sized_relobj::do_section_entsize(unsigned int shndx) return shdr.get_sh_entsize(); } - // Write out the local symbols. template diff --git a/gold/object.h b/gold/object.h index 94ad64312e1..3412aec781b 100644 --- a/gold/object.h +++ b/gold/object.h @@ -39,6 +39,7 @@ class General_options; class Task; class Cref; class Layout; +class Output_data; class Output_section; class Output_file; class Output_symtab_xindex; @@ -1151,7 +1152,7 @@ class Symbol_value Symbol_value() : output_symtab_index_(0), output_dynsym_index_(-1U), input_shndx_(0), 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; } // Get the value of this symbol. OBJECT is the object in which this @@ -1364,11 +1365,21 @@ class Symbol_value set_is_tls_symbol() { this->is_tls_symbol_ = true; } - // Return TRUE if this is a TLS symbol. + // Return true if this is a TLS symbol. bool is_tls_symbol() const { 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: // 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 @@ -1381,7 +1392,7 @@ class Symbol_value unsigned int output_dynsym_index_; // The section index in the input file in which this symbol is // defined. - unsigned int input_shndx_ : 28; + unsigned int input_shndx_ : 27; // Whether the section index is an ordinary index, not a special // value. bool is_ordinary_shndx_ : 1; @@ -1389,6 +1400,8 @@ class Symbol_value bool is_section_symbol_ : 1; // Whether this is a STT_TLS symbol. 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 // normally set to true during Layout::finalize, by // 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 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. // This is -1 if the input section requires a special mapping, such // 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_got_offsets_.clear(); + this->local_plt_offsets_.clear(); } // 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. typedef Unordered_map Local_got_offsets; - // The TLS GOT offsets of local symbols. The map stores the offsets - // for either a single GOT entry that holds the module index of a TLS - // 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 Local_tls_got_offsets; + // The PLT offsets of local symbols. + typedef Unordered_map Local_plt_offsets; // Saved information for sections whose layout was deferred. struct Deferred_layout @@ -2197,6 +2212,8 @@ class Sized_relobj : public Relobj // GOT offsets for local non-TLS symbols, and tp-relative offsets // for TLS symbols, indexed by symbol number. 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 // output section. This is INVALID_ADDRESS if the input section requires a // special mapping. diff --git a/gold/output.cc b/gold/output.cc index 55080a1fa0a..5cb63fb7725 100644 --- a/gold/output.cc +++ b/gold/output.cc @@ -1,6 +1,6 @@ // 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 . // This file is part of gold. @@ -1133,10 +1133,17 @@ Output_data_reloc_base os->set_entsize(elfcpp::Elf_sizes::rela_size); else gold_unreachable(); - if (dynamic) - os->set_should_link_to_dynsym(); - else + + // A STT_GNU_IFUNC symbol may require a IRELATIVE reloc when doing a + // 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(); + else if (parameters->doing_static_link()) + ; + else + os->set_should_link_to_dynsym(); } // Write out relocation data. @@ -1262,12 +1269,18 @@ Output_data_got::Got_entry::write(unsigned char* pov) const // link-time value, which will be relocated dynamically by a // RELATIVE relocation. Symbol* gsym = this->u_.gsym; - Sized_symbol* sgsym; - // This cast is a bit ugly. We don't want to put a - // virtual method in Symbol, because we want Symbol to be - // as small as possible. - sgsym = static_cast*>(gsym); - val = sgsym->value(); + if (this->use_plt_offset_ && gsym->has_plt_offset()) + val = (parameters->target().plt_section_for_global(gsym)->address() + + gsym->plt_offset()); + else + { + Sized_symbol* sgsym; + // This cast is a bit ugly. We don't want to put a + // virtual method in Symbol, because we want Symbol to be + // as small as possible. + sgsym = static_cast*>(gsym); + val = sgsym->value(); + } } break; @@ -1277,9 +1290,17 @@ Output_data_got::Got_entry::write(unsigned char* pov) const default: { + const Sized_relobj* object = this->u_.object; const unsigned int lsi = this->local_sym_index_; - const Symbol_value* symval = this->u_.object->local_symbol(lsi); - val = symval->value(this->u_.object, 0); + const Symbol_value* symval = object->local_symbol(lsi); + if (!this->use_plt_offset_) + 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; } @@ -1302,7 +1323,23 @@ Output_data_got::add_global( if (gsym->has_got_offset(got_type)) 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 +bool +Output_data_got::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(); gsym->set_got_offset(got_type, this->last_got_offset()); return true; @@ -1310,6 +1347,7 @@ Output_data_got::add_global( // Add an entry for a global symbol to the GOT, and add a dynamic // relocation of type R_TYPE for the GOT entry. + template void Output_data_got::add_global_with_rel( @@ -1417,7 +1455,25 @@ Output_data_got::add_local( if (object->local_has_got_offset(symndx, got_type)) 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 +bool +Output_data_got::add_local_plt( + Sized_relobj* 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(); object->set_local_got_offset(symndx, got_type, this->last_got_offset()); return true; @@ -1425,6 +1481,7 @@ Output_data_got::add_local( // Add an entry for a local symbol to the GOT, and add a dynamic // relocation of type R_TYPE for the GOT entry. + template void Output_data_got::add_local_with_rel( @@ -1486,7 +1543,7 @@ Output_data_got::add_local_pair_with_rel( Output_section* os = object->output_section(shndx); 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) { got_offset = this->last_got_offset(); @@ -1516,7 +1573,7 @@ Output_data_got::add_local_pair_with_rela( Output_section* os = object->output_section(shndx); 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) { got_offset = this->last_got_offset(); diff --git a/gold/output.h b/gold/output.h index 78c51ce7b08..1670704474c 100644 --- a/gold/output.h +++ b/gold/output.h @@ -1,6 +1,6 @@ // 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 . // This file is part of gold. @@ -605,6 +605,10 @@ class Output_section_data : public Output_data { } // Return the output section. + Output_section* + output_section() + { return this->output_section_; } + const Output_section* output_section() const { return this->output_section_; } @@ -1913,6 +1917,11 @@ class Output_data_got : public Output_section_data_build bool 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 // relocation of type R_TYPE for the GOT entry. void @@ -1942,6 +1951,12 @@ class Output_data_got : public Output_section_data_build add_local(Sized_relobj* object, unsigned int sym_index, 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* object, unsigned int sym_index, + unsigned int got_type); + // Add an entry for a local symbol to the GOT, and add a dynamic // relocation of type R_TYPE for the GOT entry. void @@ -1995,28 +2010,29 @@ class Output_data_got : public Output_section_data_build public: // Create a zero entry. Got_entry() - : local_sym_index_(CONSTANT_CODE) + : local_sym_index_(CONSTANT_CODE), use_plt_offset_(false) { this->u_.constant = 0; } // Create a global symbol entry. - explicit Got_entry(Symbol* gsym) - : local_sym_index_(GSYM_CODE) + Got_entry(Symbol* gsym, bool use_plt_offset) + : local_sym_index_(GSYM_CODE), use_plt_offset_(use_plt_offset) { this->u_.gsym = gsym; } // Create a local symbol entry. Got_entry(Sized_relobj* object, - unsigned int local_sym_index) - : local_sym_index_(local_sym_index) + unsigned int local_sym_index, bool use_plt_offset) + : local_sym_index_(local_sym_index), use_plt_offset_(use_plt_offset) { 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; } // Create a constant entry. The constant is a host value--it will // be swapped, if necessary, when it is written out. explicit Got_entry(Valtype constant) - : local_sym_index_(CONSTANT_CODE) + : local_sym_index_(CONSTANT_CODE), use_plt_offset_(false) { this->u_.constant = constant; } // Write the GOT entry to an output view. @@ -2026,8 +2042,8 @@ class Output_data_got : public Output_section_data_build private: enum { - GSYM_CODE = -1U, - CONSTANT_CODE = -2U + GSYM_CODE = 0x7fffffff, + CONSTANT_CODE = 0x7ffffffe }; union @@ -2041,7 +2057,9 @@ class Output_data_got : public Output_section_data_build } u_; // For a local symbol, the local symbol index. This is GSYM_CODE // 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_entries; diff --git a/gold/symtab.h b/gold/symtab.h index 8ccbca9a410..b9e34852e4b 100644 --- a/gold/symtab.h +++ b/gold/symtab.h @@ -582,9 +582,6 @@ class Symbol } // 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 needs_plt_entry() const { @@ -592,12 +589,27 @@ class Symbol if (this->is_undefined() && !parameters->options().shared()) return false; - return (!parameters->doing_static_link() - && !parameters->options().pie() - && this->is_func() - && (this->is_from_dynobj() - || this->is_undefined() - || this->is_preemptible())); + // An STT_GNU_IFUNC symbol always needs a PLT entry, even when + // doing a static link. + if (this->type() == elfcpp::STT_GNU_IFUNC) + 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_preemptible()); } // When determining whether a reference to a symbol needs a dynamic @@ -678,6 +690,10 @@ class Symbol if (!this->has_plt_offset()) 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 // wind up using that, so no need to use the PLT entry. if (this->needs_dynamic_reloc(FUNCTION_CALL diff --git a/gold/target-reloc.h b/gold/target-reloc.h index 23866e373d5..769d3224f20 100644 --- a/gold/target-reloc.h +++ b/gold/target-reloc.h @@ -284,6 +284,10 @@ relocate_section( else symval.set_no_output_symtab_entry(); 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; is_defined_in_discarded_section = diff --git a/gold/target.h b/gold/target.h index 6ab31d05c59..33f7ee80639 100644 --- a/gold/target.h +++ b/gold/target.h @@ -53,6 +53,7 @@ class Symbol; template class Sized_symbol; class Symbol_table; +class Output_data; class Output_section; class Input_objects; @@ -261,6 +262,18 @@ class Target reloc_addend(void* arg, unsigned int type, uint64_t addend) const { 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 // means that the current function may call an object compiled // 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 { 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 // default implementation is that any function not defined by the // ABI is a call to a non-split function. diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am index ab3ca5508d3..0aac007f396 100644 --- a/gold/testsuite/Makefile.am +++ b/gold/testsuite/Makefile.am @@ -1530,6 +1530,208 @@ no_version_test.o: no_version_test.c no_version_test.stdout: libno_version_test.so $(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 + $(LINK) -Bgcctestdir/ -pie ifuncmain7pie.o + +endif IFUNC + # Test that strong reference to a weak symbol in a DSO remains strong. check_SCRIPTS += strong_ref_weak_def.sh check_DATA += strong_ref_weak_def.stdout diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in index afd0430cabf..f96942f8303 100644 --- a/gold/testsuite/Makefile.in +++ b/gold/testsuite/Makefile.in @@ -47,7 +47,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \ $(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12) \ $(am__EXEEXT_13) $(am__EXEEXT_14) $(am__EXEEXT_15) \ $(am__EXEEXT_16) $(am__EXEEXT_17) $(am__EXEEXT_18) \ - $(am__EXEEXT_19) + $(am__EXEEXT_19) $(am__EXEEXT_20) # Test --detect-odr-violations @@ -357,26 +357,129 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \ @GCC_TRUE@@NATIVE_LINKER_TRUE@ searched_file_test @GCC_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@ $(am__DEPENDENCIES_1) # These tests work with cross linkers. -@DEFAULT_TARGET_I386_TRUE@am__append_32 = split_i386.sh -@DEFAULT_TARGET_I386_TRUE@am__append_33 = split_i386_1.stdout split_i386_2.stdout \ +@DEFAULT_TARGET_I386_TRUE@am__append_33 = split_i386.sh +@DEFAULT_TARGET_I386_TRUE@am__append_34 = split_i386_1.stdout split_i386_2.stdout \ @DEFAULT_TARGET_I386_TRUE@ split_i386_3.stdout split_i386_4.stdout split_i386_r.stdout -@DEFAULT_TARGET_I386_TRUE@am__append_34 = split_i386_1 split_i386_2 split_i386_3 \ +@DEFAULT_TARGET_I386_TRUE@am__append_35 = split_i386_1 split_i386_2 split_i386_3 \ @DEFAULT_TARGET_I386_TRUE@ split_i386_4 split_i386_r -@DEFAULT_TARGET_X86_64_TRUE@am__append_35 = split_x86_64.sh -@DEFAULT_TARGET_X86_64_TRUE@am__append_36 = split_x86_64_1.stdout split_x86_64_2.stdout \ +@DEFAULT_TARGET_X86_64_TRUE@am__append_36 = split_x86_64.sh +@DEFAULT_TARGET_X86_64_TRUE@am__append_37 = split_x86_64_1.stdout split_x86_64_2.stdout \ @DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_3.stdout split_x86_64_4.stdout split_x86_64_r.stdout -@DEFAULT_TARGET_X86_64_TRUE@am__append_37 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \ +@DEFAULT_TARGET_X86_64_TRUE@am__append_38 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \ @DEFAULT_TARGET_X86_64_TRUE@ split_x86_64_4 split_x86_64_r -@DEFAULT_TARGET_ARM_TRUE@am__append_38 = arm_abs_global.sh \ +@DEFAULT_TARGET_ARM_TRUE@am__append_39 = arm_abs_global.sh \ @DEFAULT_TARGET_ARM_TRUE@ arm_branch_in_range.sh \ @DEFAULT_TARGET_ARM_TRUE@ arm_fix_v4bx.sh arm_attr_merge.sh -@DEFAULT_TARGET_ARM_TRUE@am__append_39 = arm_abs_global.stdout \ +@DEFAULT_TARGET_ARM_TRUE@am__append_40 = arm_abs_global.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_bl_in_range.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_bl_out_of_range.stdout \ @DEFAULT_TARGET_ARM_TRUE@ thumb_bl_in_range.stdout \ @@ -393,7 +496,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \ @DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6.stdout \ @DEFAULT_TARGET_ARM_TRUE@ arm_attr_merge_6r.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@ thumb_bl_in_range \ @DEFAULT_TARGET_ARM_TRUE@ thumb_bl_out_of_range \ @@ -531,6 +634,36 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS) @GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_19 = \ @GCC_TRUE@@NATIVE_LINKER_TRUE@ permission_test$(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$(EXEEXT) basic_pic_test_SOURCES = basic_pic_test.c basic_pic_test_OBJECTS = basic_pic_test.$(OBJEXT) basic_pic_test_LDADD = $(LDADD) @@ -696,6 +829,170 @@ icf_virtual_function_folding_test_LDADD = $(LDADD) icf_virtual_function_folding_test_DEPENDENCIES = libgoldtest.a \ ../libgold.a ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@am_ifuncmain1_OBJECTS = ifuncmain1.$(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) initpri1_OBJECTS = $(am_initpri1_OBJECTS) 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) \ flagstest_compress_debug_sections.c flagstest_o_specialfile.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 \ many_sections_r_test.c $(many_sections_test_SOURCES) \ $(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. MOSTLYCLEANFILES = *.so *.syms *.stdout $(am__append_3) \ $(am__append_8) $(am__append_17) $(am__append_25) \ - $(am__append_29) $(am__append_34) $(am__append_37) \ - $(am__append_40) + $(am__append_29) $(am__append_35) $(am__append_38) \ + $(am__append_41) # We will add to these later, for each individual test. Note # that we add each test under check_SCRIPTS or check_PROGRAMS; # the TESTS variable is automatically populated from these. 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) +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) 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_LDFLAGS = -Bgcctestdir/ -Lalt @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 +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1_DEPENDENCIES = gcctestdir/ld ifuncmod1.so +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1_LDFLAGS = -Bgcctestdir/ -Wl,-R,. +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1_LDADD = ifuncmod1.so +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vis_SOURCES = ifuncmain1vis.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vis_DEPENDENCIES = gcctestdir/ld ifuncmod1.so +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vis_LDFLAGS = -Bgcctestdir/ -Wl,-R,. +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain1vis_LDADD = ifuncmod1.so +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2static_SOURCES = ifuncmain2.c ifuncdep2.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2static_DEPENDENCIES = gcctestdir/ld +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2static_LDFLAGS = -Bgcctestdir/ -static +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2_SOURCES = ifuncmain2.c ifuncdep2.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2_DEPENDENCIES = gcctestdir/ld +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain2_LDFLAGS = -Bgcctestdir/ +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain3_SOURCES = ifuncmain3.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain3_DEPENDENCIES = gcctestdir/ld ifuncmod3.so +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain3_LDFLAGS = -Bgcctestdir/ -Wl,--export-dynamic -Wl,-R,. +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain3_LDADD = -ldl +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4static_SOURCES = ifuncmain4.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4static_DEPENDENCIES = gcctestdir/ld +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4static_LDFLAGS = -Bgcctestdir/ -static +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4_SOURCES = ifuncmain4.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4_DEPENDENCIES = gcctestdir/ld +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain4_LDFLAGS = -Bgcctestdir/ +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5static_SOURCES = ifuncmain5.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5static_DEPENDENCIES = gcctestdir/ld ifuncdep5.o +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5static_LDFLAGS = -Bgcctestdir/ -static +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5static_LDADD = ifuncdep5.o +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5_SOURCES = ifuncmain5.c +@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncmain5_DEPENDENCIES = gcctestdir/ld ifuncmod5.so 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$(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@./$(DEPDIR)/flagstest_o_specialfile_and_compress_debug_sections.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/icf_virtual_function_folding_test.Po@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ifuncdep2.Po@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@./$(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)/justsyms_1.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) "$$tst" $(am__check_post) searched_file_test.log: searched_file_test$(EXEEXT) @p='searched_file_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$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" $(am__check_post) .test.log: @p='$<'; $(am__check_pre) $(TEST_LOG_COMPILE) "$$tst" $(am__check_post) @am__EXEEXT_TRUE@.test$(EXEEXT).log: @@ -3683,6 +4319,103 @@ uninstall-am: @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -o $@ -c -fPIC $< @GCC_TRUE@@NATIVE_LINKER_TRUE@no_version_test.stdout: libno_version_test.so @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@ $(COMPILE) -o $@ -c -fPIC $< @GCC_TRUE@@NATIVE_LINKER_TRUE@strong_ref_weak_def_2.so: strong_ref_weak_def_2.o gcctestdir/ld diff --git a/gold/testsuite/ifunc-sel.h b/gold/testsuite/ifunc-sel.h new file mode 100644 index 00000000000..6a27b69c5ba --- /dev/null +++ b/gold/testsuite/ifunc-sel.h @@ -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 diff --git a/gold/testsuite/ifuncdep2.c b/gold/testsuite/ifuncdep2.c new file mode 100644 index 00000000000..758bae1932e --- /dev/null +++ b/gold/testsuite/ifuncdep2.c @@ -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); +} diff --git a/gold/testsuite/ifuncmain1.c b/gold/testsuite/ifuncmain1.c new file mode 100644 index 00000000000..cc1e5ec5ba0 --- /dev/null +++ b/gold/testsuite/ifuncmain1.c @@ -0,0 +1,64 @@ +/* Test STT_GNU_IFUNC symbols: + + 1. Direct function call. + 2. Function pointer. + 3. Visibility without override. + */ + +#include + +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; +} diff --git a/gold/testsuite/ifuncmain1vis.c b/gold/testsuite/ifuncmain1vis.c new file mode 100644 index 00000000000..c16af63ac5a --- /dev/null +++ b/gold/testsuite/ifuncmain1vis.c @@ -0,0 +1,89 @@ +/* Test STT_GNU_IFUNC symbols: + + 1. Direct function call. + 2. Function pointer. + 3. Visibility with override. + */ + +#include + +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; +} diff --git a/gold/testsuite/ifuncmain2.c b/gold/testsuite/ifuncmain2.c new file mode 100644 index 00000000000..db3ba56a02d --- /dev/null +++ b/gold/testsuite/ifuncmain2.c @@ -0,0 +1,14 @@ +/* Test calling one STT_GNU_IFUNC function with 3 different + STT_GNU_IFUNC definitions. */ + +#include + +extern int foo1 (void); + +int +main (void) +{ + if (foo1 () != -1) + abort (); + return 0; +} diff --git a/gold/testsuite/ifuncmain3.c b/gold/testsuite/ifuncmain3.c new file mode 100644 index 00000000000..8e543e59537 --- /dev/null +++ b/gold/testsuite/ifuncmain3.c @@ -0,0 +1,133 @@ +/* Test STT_GNU_IFUNC symbols with dlopen: + + 1. Direct function call. + 2. Function pointer. + 3. Visibility with override. + */ + +#include +#include +#include + +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; +} diff --git a/gold/testsuite/ifuncmain4.c b/gold/testsuite/ifuncmain4.c new file mode 100644 index 00000000000..e55fee2eb3b --- /dev/null +++ b/gold/testsuite/ifuncmain4.c @@ -0,0 +1,4 @@ +/* Test STT_GNU_IFUNC symbols in a single source file. */ + +#include "ifuncmod1.c" +#include "ifuncmain1.c" diff --git a/gold/testsuite/ifuncmain5.c b/gold/testsuite/ifuncmain5.c new file mode 100644 index 00000000000..9e6c2c16250 --- /dev/null +++ b/gold/testsuite/ifuncmain5.c @@ -0,0 +1,41 @@ +/* Test STT_GNU_IFUNC symbols with dynamic function pointer only. */ + +#include + +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; +} diff --git a/gold/testsuite/ifuncmain6pie.c b/gold/testsuite/ifuncmain6pie.c new file mode 100644 index 00000000000..8478d4c408d --- /dev/null +++ b/gold/testsuite/ifuncmain6pie.c @@ -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 +#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; +} diff --git a/gold/testsuite/ifuncmain7.c b/gold/testsuite/ifuncmain7.c new file mode 100644 index 00000000000..f6608ea57f5 --- /dev/null +++ b/gold/testsuite/ifuncmain7.c @@ -0,0 +1,74 @@ +/* Test local STT_GNU_IFUNC symbols: + + 1. Direct function call. + 2. Function pointer. + */ + +#include +#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; +} diff --git a/gold/testsuite/ifuncmod1.c b/gold/testsuite/ifuncmod1.c new file mode 100644 index 00000000000..e3b37cb5ab0 --- /dev/null +++ b/gold/testsuite/ifuncmod1.c @@ -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; +} diff --git a/gold/testsuite/ifuncmod3.c b/gold/testsuite/ifuncmod3.c new file mode 100644 index 00000000000..ca2d9626001 --- /dev/null +++ b/gold/testsuite/ifuncmod3.c @@ -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; diff --git a/gold/testsuite/ifuncmod5.c b/gold/testsuite/ifuncmod5.c new file mode 100644 index 00000000000..9a08e8cf53c --- /dev/null +++ b/gold/testsuite/ifuncmod5.c @@ -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"); diff --git a/gold/testsuite/ifuncmod6.c b/gold/testsuite/ifuncmod6.c new file mode 100644 index 00000000000..89a50f931b4 --- /dev/null +++ b/gold/testsuite/ifuncmod6.c @@ -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; +} diff --git a/gold/x86_64.cc b/gold/x86_64.cc index df46f2b9771..b137db3c2d0 100644 --- a/gold/x86_64.cc +++ b/gold/x86_64.cc @@ -46,7 +46,115 @@ namespace 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 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. // See the ABI at @@ -188,6 +296,15 @@ class Target_x86_64 : public Target_freebsd<64, false> uint64_t 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. void do_calls_non_split(Relobj* object, unsigned int shndx, @@ -291,6 +408,9 @@ class Target_x86_64 : public Target_freebsd<64, false> inline bool 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. bool issued_non_pic_error_; }; @@ -441,6 +561,12 @@ class Target_x86_64 : public Target_freebsd<64, false> void 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. void define_tls_base_symbol(Symbol_table*, Layout*); @@ -641,116 +767,12 @@ Target_x86_64::rela_dyn_section(Layout* layout) 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 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, // since we need to refer to the start. We also create our own .got // 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_space* 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, elfcpp::SHF_ALLOC, this->rel_, 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 @@ -789,15 +829,46 @@ Output_data_plt_x86_64::add_entry(Symbol* gsym) this->got_plt_->set_current_data_size(got_offset + 8); // Every PLT entry needs a reloc. - gsym->set_needs_dynsym_entry(); - this->rel_->add_global(gsym, elfcpp::R_X86_64_JUMP_SLOT, this->got_plt_, - got_offset, 0); + 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(); + this->rel_->add_global(gsym, elfcpp::R_X86_64_JUMP_SLOT, this->got_plt_, + got_offset, 0); + } // 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 // 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 // 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. 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_); 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 .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); } +// 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. 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. case elfcpp::R_X86_64_RELATIVE: + case elfcpp::R_X86_64_IRELATIVE: case elfcpp::R_X86_64_GLOB_DAT: case elfcpp::R_X86_64_JUMP_SLOT: 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. inline void @@ -1213,6 +1371,14 @@ Target_x86_64::Scan::local(Symbol_table* symtab, unsigned int r_type, 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) { case elfcpp::R_X86_64_NONE: @@ -1231,11 +1397,11 @@ Target_x86_64::Scan::local(Symbol_table* symtab, { unsigned int r_sym = elfcpp::elf_r_sym<64>(reloc.get_r_info()); Reloc_section* rela_dyn = target->rela_dyn_section(layout); - rela_dyn->add_local_relative(object, r_sym, - elfcpp::R_X86_64_RELATIVE, - output_section, data_shndx, - reloc.get_r_offset(), - reloc.get_r_addend()); + rela_dyn->add_local_relative(object, r_sym, + elfcpp::R_X86_64_RELATIVE, + output_section, data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); } break; @@ -1306,7 +1472,16 @@ Target_x86_64::Scan::local(Symbol_table* symtab, // The symbol requires a GOT entry. Output_data_got<64, false>* got = target->got_section(symtab, layout); 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 // 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); // R_X86_64_RELATIVE assumes a 64-bit relocation. if (r_type != elfcpp::R_X86_64_GOT32) - rela_dyn->add_local_relative( - object, r_sym, elfcpp::R_X86_64_RELATIVE, got, - object->local_got_offset(r_sym, GOT_TYPE_STANDARD), 0); + { + unsigned int got_offset = + 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 { 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_JUMP_SLOT: case elfcpp::R_X86_64_RELATIVE: + case elfcpp::R_X86_64_IRELATIVE: // These are outstanding tls relocs, which are unexpected when linking case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_DTPMOD64: @@ -1571,6 +1751,11 @@ Target_x86_64::Scan::global(Symbol_table* symtab, unsigned int r_type, 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) { case elfcpp::R_X86_64_NONE: @@ -1603,14 +1788,34 @@ Target_x86_64::Scan::global(Symbol_table* symtab, target->copy_reloc(symtab, layout, object, 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 && gsym->can_use_relative_reloc(false)) { Reloc_section* rela_dyn = target->rela_dyn_section(layout); - rela_dyn->add_global_relative(gsym, elfcpp::R_X86_64_RELATIVE, - output_section, object, - data_shndx, reloc.get_r_offset(), - reloc.get_r_addend()); + rela_dyn->add_global_relative(gsym, elfcpp::R_X86_64_RELATIVE, + output_section, object, + data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); } else { @@ -1664,23 +1869,49 @@ Target_x86_64::Scan::global(Symbol_table* symtab, // The symbol requires a GOT entry. Output_data_got<64, false>* got = target->got_section(symtab, layout); if (gsym->final_value_is_known()) - got->add_global(gsym, GOT_TYPE_STANDARD); + { + // 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); + } else { // If this symbol is not fully resolved, we need to add a // dynamic relocation for it. Reloc_section* rela_dyn = target->rela_dyn_section(layout); - if (gsym->is_from_dynobj() - || gsym->is_undefined() - || gsym->is_preemptible()) + if (gsym->is_from_dynobj() + || gsym->is_undefined() + || 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, elfcpp::R_X86_64_GLOB_DAT); else { - if (got->add_global(gsym, GOT_TYPE_STANDARD)) - rela_dyn->add_global_relative( - gsym, elfcpp::R_X86_64_RELATIVE, got, - gsym->got_offset(GOT_TYPE_STANDARD), 0); + // For a STT_GNU_IFUNC symbol we want to write the PLT + // offset into the GOT, so that function pointer + // comparisons work correctly. + 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 @@ -1723,6 +1954,7 @@ Target_x86_64::Scan::global(Symbol_table* symtab, 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: // These are outstanding tls relocs, which are unexpected when linking case elfcpp::R_X86_64_TPOFF64: 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; if (gsym != NULL && 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()); 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(); // 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_JUMP_SLOT: case elfcpp::R_X86_64_RELATIVE: + case elfcpp::R_X86_64_IRELATIVE: // These are outstanding tls relocs, which are unexpected when linking case elfcpp::R_X86_64_TPOFF64: 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_JUMP_SLOT: case elfcpp::R_X86_64_RELATIVE: + case elfcpp::R_X86_64_IRELATIVE: // These are outstanding tls relocs, which are unexpected when linking case elfcpp::R_X86_64_TPOFF64: case elfcpp::R_X86_64_DTPMOD64: