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* i386.cc (class Target_i386): Add got_tlsdesc_ field.
(Target_i386::Target_i386):: Initialize got_tlsdesc_. (Target_i386::got_tlsdesc_section): New function. (Target_i386::got_section): Create space for GOT entries for TLSDESC relocations. (Target_i386::Scan::local): Use TLSDESC GOT for unoptimized R_386_TLS_GOTDESC. (Target_i386::Scan::global): Likewise. (Target_i386::Relocate::relocate_tls): Adjust GOT offset when using TLSDESC GOT. * x86_64.cc (class Target_x86_64): Add got_tlsdesc_ field. (Target_x86_64::Target_x86_64):: Initialize got_tlsdesc_. (Target_x86_64::got_tlsdesc_section): New function. (Target_x86_64::got_section): Create space for GOT entries for TLSDESC relocations. (Target_x86_64::Scan::local): Use TLSDESC GOT for unoptimized R_386_TLS_GOTDESC. (Target_x86_64::Scan::global): Likewise. (Target_x86_64::Relocate::relocate_tls): Adjust GOT offset when using TLSDESC GOT.
This commit is contained in:
Ian Lance Taylor
parent
b27423bb54
commit
a8df5856e2
@ -1,3 +1,26 @@
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2010-08-02 Ian Lance Taylor <iant@google.com>
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* i386.cc (class Target_i386): Add got_tlsdesc_ field.
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(Target_i386::Target_i386):: Initialize got_tlsdesc_.
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(Target_i386::got_tlsdesc_section): New function.
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(Target_i386::got_section): Create space for GOT entries for
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TLSDESC relocations.
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(Target_i386::Scan::local): Use TLSDESC GOT for unoptimized
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R_386_TLS_GOTDESC.
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(Target_i386::Scan::global): Likewise.
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(Target_i386::Relocate::relocate_tls): Adjust GOT offset when
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using TLSDESC GOT.
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* x86_64.cc (class Target_x86_64): Add got_tlsdesc_ field.
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(Target_x86_64::Target_x86_64):: Initialize got_tlsdesc_.
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(Target_x86_64::got_tlsdesc_section): New function.
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(Target_x86_64::got_section): Create space for GOT entries for
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TLSDESC relocations.
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(Target_x86_64::Scan::local): Use TLSDESC GOT for unoptimized
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R_386_TLS_GOTDESC.
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(Target_x86_64::Scan::global): Likewise.
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(Target_x86_64::Relocate::relocate_tls): Adjust GOT offset when
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using TLSDESC GOT.
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2010-08-02 Ian Lance Taylor <iant@google.com>
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* testsuite/final_layout.sh: Use dc to convert from hex to
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63
gold/i386.cc
63
gold/i386.cc
@ -1,6 +1,6 @@
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// i386.cc -- i386 target support for gold.
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// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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@ -59,8 +59,9 @@ class Target_i386 : public Target_freebsd<32, false>
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Target_i386()
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: Target_freebsd<32, false>(&i386_info),
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got_(NULL), plt_(NULL), got_plt_(NULL), global_offset_table_(NULL),
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rel_dyn_(NULL), copy_relocs_(elfcpp::R_386_COPY), dynbss_(NULL),
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got_(NULL), plt_(NULL), got_plt_(NULL), got_tlsdesc_(NULL),
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global_offset_table_(NULL), rel_dyn_(NULL),
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copy_relocs_(elfcpp::R_386_COPY), dynbss_(NULL),
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got_mod_index_offset_(-1U), tls_base_symbol_defined_(false)
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{ }
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@ -385,6 +386,14 @@ class Target_i386 : public Target_freebsd<32, false>
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return this->got_plt_;
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}
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// Get the GOT section for TLSDESC entries.
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Output_data_got<32, false>*
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got_tlsdesc_section() const
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{
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gold_assert(this->got_tlsdesc_ != NULL);
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return this->got_tlsdesc_;
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}
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// Create a PLT entry for a global symbol.
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void
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make_plt_entry(Symbol_table*, Layout*, Symbol*);
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@ -447,6 +456,8 @@ class Target_i386 : public Target_freebsd<32, false>
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Output_data_plt_i386* plt_;
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// The GOT PLT section.
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Output_data_space* got_plt_;
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// The GOT section for TLSDESC relocations.
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Output_data_got<32, false>* got_tlsdesc_;
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// The _GLOBAL_OFFSET_TABLE_ symbol.
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Symbol* global_offset_table_;
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// The dynamic reloc section.
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@ -521,6 +532,15 @@ Target_i386::got_section(Symbol_table* symtab, Layout* layout)
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elfcpp::STB_LOCAL,
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elfcpp::STV_HIDDEN, 0,
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false, false);
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// If there are any TLSDESC relocations, they get GOT entries in
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// .got.plt after the jump slot entries.
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this->got_tlsdesc_ = new Output_data_got<32, false>();
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layout->add_output_section_data(".got.plt", elfcpp::SHT_PROGBITS,
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(elfcpp::SHF_ALLOC
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| elfcpp::SHF_WRITE),
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this->got_tlsdesc_, false, false, false,
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true);
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}
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return this->got_;
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@ -1117,9 +1137,13 @@ Target_i386::Scan::local(Symbol_table* symtab,
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target->define_tls_base_symbol(symtab, layout);
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if (optimized_type == tls::TLSOPT_NONE)
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{
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// Create a double GOT entry with an R_386_TLS_DESC reloc.
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Output_data_got<32, false>* got
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= target->got_section(symtab, layout);
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// Create a double GOT entry with an R_386_TLS_DESC
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// reloc. The R_386_TLS_DESC reloc is resolved
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// lazily, so the GOT entry needs to be in an area in
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// .got.plt, not .got. Call got_section to make sure
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// the section has been created.
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target->got_section(symtab, layout);
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Output_data_got<32, false>* got = target->got_tlsdesc_section();
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unsigned int r_sym = elfcpp::elf_r_sym<32>(reloc.get_r_info());
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if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_DESC))
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{
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@ -1501,9 +1525,13 @@ Target_i386::Scan::global(Symbol_table* symtab,
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target->define_tls_base_symbol(symtab, layout);
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if (optimized_type == tls::TLSOPT_NONE)
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{
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// Create a double GOT entry with an R_386_TLS_DESC reloc.
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Output_data_got<32, false>* got
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= target->got_section(symtab, layout);
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// Create a double GOT entry with an R_386_TLS_DESC
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// reloc. The R_386_TLS_DESC reloc is resolved
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// lazily, so the GOT entry needs to be in an area in
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// .got.plt, not .got. Call got_section to make sure
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// the section has been created.
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target->got_section(symtab, layout);
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Output_data_got<32, false>* got = target->got_tlsdesc_section();
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Reloc_section* rt = target->rel_tls_desc_section(layout);
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got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_DESC, rt,
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elfcpp::R_386_TLS_DESC, 0);
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@ -2046,18 +2074,27 @@ Target_i386::Relocate::relocate_tls(const Relocate_info<32, false>* relinfo,
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unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
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? GOT_TYPE_TLS_NOFFSET
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: GOT_TYPE_TLS_DESC);
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unsigned int got_offset;
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unsigned int got_offset = 0;
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if (r_type == elfcpp::R_386_TLS_GOTDESC
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&& optimized_type == tls::TLSOPT_NONE)
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{
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// We created GOT entries in the .got.tlsdesc portion of
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// the .got.plt section, but the offset stored in the
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// symbol is the offset within .got.tlsdesc.
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got_offset = (target->got_size()
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+ target->got_plt_section()->data_size());
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}
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if (gsym != NULL)
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{
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gold_assert(gsym->has_got_offset(got_type));
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got_offset = gsym->got_offset(got_type) - target->got_size();
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got_offset += gsym->got_offset(got_type) - target->got_size();
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}
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else
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{
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unsigned int r_sym = elfcpp::elf_r_sym<32>(rel.get_r_info());
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gold_assert(object->local_has_got_offset(r_sym, got_type));
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got_offset = (object->local_got_offset(r_sym, got_type)
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- target->got_size());
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got_offset += (object->local_got_offset(r_sym, got_type)
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- target->got_size());
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}
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if (optimized_type == tls::TLSOPT_TO_IE)
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{
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@ -1,6 +1,6 @@
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// x86_64.cc -- x86_64 target support for gold.
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// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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@ -64,8 +64,9 @@ class Target_x86_64 : public Target_freebsd<64, false>
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Target_x86_64()
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: Target_freebsd<64, false>(&x86_64_info),
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got_(NULL), plt_(NULL), got_plt_(NULL), global_offset_table_(NULL),
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rela_dyn_(NULL), copy_relocs_(elfcpp::R_X86_64_COPY), dynbss_(NULL),
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got_(NULL), plt_(NULL), got_plt_(NULL), got_tlsdesc_(NULL),
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global_offset_table_(NULL), rela_dyn_(NULL),
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copy_relocs_(elfcpp::R_X86_64_COPY), dynbss_(NULL),
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got_mod_index_offset_(-1U), tlsdesc_reloc_info_(),
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tls_base_symbol_defined_(false)
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{ }
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@ -403,6 +404,14 @@ class Target_x86_64 : public Target_freebsd<64, false>
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return this->got_plt_;
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}
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// Get the GOT section for TLSDESC entries.
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Output_data_got<64, false>*
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got_tlsdesc_section() const
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{
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gold_assert(this->got_tlsdesc_ != NULL);
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return this->got_tlsdesc_;
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}
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// Create the PLT section.
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void
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make_plt_section(Symbol_table* symtab, Layout* layout);
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@ -486,6 +495,8 @@ class Target_x86_64 : public Target_freebsd<64, false>
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Output_data_plt_x86_64* plt_;
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// The GOT PLT section.
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Output_data_space* got_plt_;
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// The GOT section for TLSDESC relocations.
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Output_data_got<64, false>* got_tlsdesc_;
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// The _GLOBAL_OFFSET_TABLE_ symbol.
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Symbol* global_offset_table_;
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// The dynamic reloc section.
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@ -574,6 +585,15 @@ Target_x86_64::got_section(Symbol_table* symtab, Layout* layout)
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elfcpp::STB_LOCAL,
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elfcpp::STV_HIDDEN, 0,
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false, false);
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// If there are any TLSDESC relocations, they get GOT entries in
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// .got.plt after the jump slot entries.
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this->got_tlsdesc_ = new Output_data_got<64, false>();
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layout->add_output_section_data(".got.plt", elfcpp::SHT_PROGBITS,
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(elfcpp::SHF_ALLOC
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| elfcpp::SHF_WRITE),
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this->got_tlsdesc_, false, false, false,
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true);
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}
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return this->got_;
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@ -1306,9 +1326,13 @@ Target_x86_64::Scan::local(Symbol_table* symtab,
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// Create reserved PLT and GOT entries for the resolver.
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target->reserve_tlsdesc_entries(symtab, layout);
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// Generate a double GOT entry with an R_X86_64_TLSDESC reloc.
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Output_data_got<64, false>* got
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= target->got_section(symtab, layout);
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// Generate a double GOT entry with an
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// R_X86_64_TLSDESC reloc. The R_X86_64_TLSDESC reloc
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// is resolved lazily, so the GOT entry needs to be in
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// an area in .got.plt, not .got. Call got_section to
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// make sure the section has been created.
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target->got_section(symtab, layout);
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Output_data_got<64, false>* got = target->got_tlsdesc_section();
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unsigned int r_sym = elfcpp::elf_r_sym<64>(reloc.get_r_info());
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if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_DESC))
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{
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@ -1687,9 +1711,13 @@ Target_x86_64::Scan::global(Symbol_table* symtab,
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// Create reserved PLT and GOT entries for the resolver.
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target->reserve_tlsdesc_entries(symtab, layout);
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// Create a double GOT entry with an R_X86_64_TLSDESC reloc.
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Output_data_got<64, false>* got
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= target->got_section(symtab, layout);
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// Create a double GOT entry with an R_X86_64_TLSDESC
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// reloc. The R_X86_64_TLSDESC reloc is resolved
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// lazily, so the GOT entry needs to be in an area in
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// .got.plt, not .got. Call got_section to make sure
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// the section has been created.
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target->got_section(symtab, layout);
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Output_data_got<64, false>* got = target->got_tlsdesc_section();
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Reloc_section *rt = target->rela_tlsdesc_section(layout);
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got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_DESC, rt,
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elfcpp::R_X86_64_TLSDESC, 0);
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@ -2229,18 +2257,27 @@ Target_x86_64::Relocate::relocate_tls(const Relocate_info<64, false>* relinfo,
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unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
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? GOT_TYPE_TLS_OFFSET
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: GOT_TYPE_TLS_DESC);
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unsigned int got_offset;
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unsigned int got_offset = 0;
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if (r_type == elfcpp::R_X86_64_GOTPC32_TLSDESC
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&& optimized_type == tls::TLSOPT_NONE)
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{
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// We created GOT entries in the .got.tlsdesc portion of
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// the .got.plt section, but the offset stored in the
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// symbol is the offset within .got.tlsdesc.
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got_offset = (target->got_size()
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+ target->got_plt_section()->data_size());
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}
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if (gsym != NULL)
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{
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gold_assert(gsym->has_got_offset(got_type));
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got_offset = gsym->got_offset(got_type) - target->got_size();
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got_offset += gsym->got_offset(got_type) - target->got_size();
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}
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else
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{
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unsigned int r_sym = elfcpp::elf_r_sym<64>(rela.get_r_info());
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gold_assert(object->local_has_got_offset(r_sym, got_type));
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got_offset = (object->local_got_offset(r_sym, got_type)
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- target->got_size());
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got_offset += (object->local_got_offset(r_sym, got_type)
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- target->got_size());
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}
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if (optimized_type == tls::TLSOPT_TO_IE)
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{
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