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| author | Cary Coutant <ccoutant@google.com> | 2008-04-17 02:00:54 +0000 |
|---|---|---|
| committer | Cary Coutant <ccoutant@google.com> | 2008-04-17 02:00:54 +0000 |
| commit | edfbb029539d1e67751ca7dd7c6ff3cbe702a6c2 (patch) | |
| tree | 040f027806994825a8d677b455d77362de6ab65e /gold/i386.cc | |
| parent | 700b53b17a52448cb49f04a4e27d5f0130537924 (diff) | |
| download | gdb-edfbb029539d1e67751ca7dd7c6ff3cbe702a6c2.zip gdb-edfbb029539d1e67751ca7dd7c6ff3cbe702a6c2.tar.gz gdb-edfbb029539d1e67751ca7dd7c6ff3cbe702a6c2.tar.bz2 | |
* i386.cc (Target_i386::define_tls_base_symbol): New function.
(Target_i386::tls_base_symbol_defined_): New field.
(Target_i386::Scan::local): Define _TLS_MODULE_BASE_ symbol.
(Target_i386::Scan::global): Likewise.
* symtab.cc (sized_finalize_symbol): Add check for TLS symbol.
* x86_64.cc (Target_x86_64::define_tls_base_symbol): New function.
(Target_x86_64::tls_base_symbol_defined_): New field.
(Target_x86_64::Scan::local): Define _TLS_MODULE_BASE_ symbol.
(Target_x86_64::Scan::global): Likewise.
Diffstat (limited to 'gold/i386.cc')
| -rw-r--r-- | gold/i386.cc | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/gold/i386.cc b/gold/i386.cc index 917ec0b..3e24836 100644 --- a/gold/i386.cc +++ b/gold/i386.cc @@ -59,7 +59,7 @@ class Target_i386 : public Sized_target<32, false> : Sized_target<32, false>(&i386_info), got_(NULL), plt_(NULL), got_plt_(NULL), rel_dyn_(NULL), copy_relocs_(elfcpp::R_386_COPY), dynbss_(NULL), - got_mod_index_offset_(-1U) + got_mod_index_offset_(-1U), tls_base_symbol_defined_(false) { } // Scan the relocations to look for symbol adjustments. @@ -323,6 +323,10 @@ class Target_i386 : public Sized_target<32, false> void make_plt_entry(Symbol_table*, Layout*, Symbol*); + // Define the _TLS_MODULE_BASE_ symbol at the end of the TLS segment. + void + define_tls_base_symbol(Symbol_table*, Layout*); + // Create a GOT entry for the TLS module index. unsigned int got_mod_index_entry(Symbol_table* symtab, Layout* layout, @@ -391,6 +395,8 @@ class Target_i386 : public Sized_target<32, false> Output_data_space* dynbss_; // Offset of the GOT entry for the TLS module index. unsigned int got_mod_index_offset_; + // True if the _TLS_MODULE_BASE_ symbol has been defined. + bool tls_base_symbol_defined_; }; const Target::Target_info Target_i386::i386_info = @@ -719,6 +725,27 @@ Target_i386::make_plt_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym) this->plt_->add_entry(gsym); } +// Define the _TLS_MODULE_BASE_ symbol at the end of the TLS segment. + +void +Target_i386::define_tls_base_symbol(Symbol_table* symtab, Layout* layout) +{ + if (this->tls_base_symbol_defined_) + return; + + Output_segment* tls_segment = layout->tls_segment(); + if (tls_segment != NULL) + { + symtab->define_in_output_segment("_TLS_MODULE_BASE_", NULL, + tls_segment, 0, 0, + elfcpp::STT_TLS, + elfcpp::STB_LOCAL, + elfcpp::STV_HIDDEN, 0, + Symbol::SEGMENT_END, true); + } + this->tls_base_symbol_defined_ = true; +} + // Create a GOT entry for the TLS module index. unsigned int @@ -959,6 +986,7 @@ Target_i386::Scan::local(const General_options&, break; case elfcpp::R_386_TLS_GOTDESC: // Global-dynamic (from ~oliva) + target->define_tls_base_symbol(symtab, layout); if (optimized_type == tls::TLSOPT_NONE) { // Create a double GOT entry with an R_386_TLS_DESC reloc. @@ -1285,6 +1313,7 @@ Target_i386::Scan::global(const General_options&, break; case elfcpp::R_386_TLS_GOTDESC: // Global-dynamic (~oliva url) + target->define_tls_base_symbol(symtab, layout); if (optimized_type == tls::TLSOPT_NONE) { // Create a double GOT entry with an R_386_TLS_DESC reloc. |