// sparc.cc -- sparc target support for gold.
-// Copyright 2008, 2009 Free Software Foundation, Inc.
+// Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
// Written by David S. Miller <davem@davemloft.net>.
// This file is part of gold.
const unsigned char* plocal_symbols);
// Finalize the sections.
void
- do_finalize_sections(Layout*, const Input_objects*);
+ do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
// Return the value to use for a dynamic which requires special
// treatment.
// Return the size of the GOT section.
section_size_type
- got_size()
+ got_size() const
{
gold_assert(this->got_ != NULL);
return this->got_->data_size();
}
+ // Return the number of entries in the GOT.
+ unsigned int
+ got_entry_count() const
+ {
+ if (this->got_ == NULL)
+ return 0;
+ return this->got_size() / (size / 8);
+ }
+
+ // Return the number of entries in the PLT.
+ unsigned int
+ plt_entry_count() const;
+
+ // Return the offset of the first non-reserved PLT entry.
+ unsigned int
+ first_plt_entry_offset() const;
+
+ // Return the size of each PLT entry.
+ unsigned int
+ plt_entry_size() const;
+
private:
// The class which scans relocations.
const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
Symbol* gsym);
+ inline bool
+ local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
+ Target_sparc* ,
+ Sized_relobj<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rela<size, big_endian>& ,
+ unsigned int ,
+ const elfcpp::Sym<size, big_endian>&)
+ { return false; }
+
+ inline bool
+ global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
+ Target_sparc* ,
+ Sized_relobj<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rela<size,
+ big_endian>& ,
+ unsigned int , Symbol*)
+ { return false; }
+
+
private:
static void
unsupported_reloc_local(Sized_relobj<size, big_endian>*,
static Target::Target_info sparc_info;
// The types of GOT entries needed for this platform.
+ // These values are exposed to the ABI in an incremental link.
+ // Do not renumber existing values without changing the version
+ // number of the .gnu_incremental_inputs section.
enum Got_type
{
GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
elfcpp::SHN_UNDEF, // small_common_shndx
elfcpp::SHN_UNDEF, // large_common_shndx
0, // small_common_section_flags
- 0 // large_common_section_flags
+ 0, // large_common_section_flags
+ NULL, // attributes_section
+ NULL // attributes_vendor
};
template<>
elfcpp::SHN_UNDEF, // small_common_shndx
elfcpp::SHN_UNDEF, // large_common_shndx
0, // small_common_section_flags
- 0 // large_common_section_flags
+ 0, // large_common_section_flags
+ NULL, // attributes_section
+ NULL // attributes_vendor
};
// We have to take care here, even when operating in little-endian
this->got_ = new Output_data_got<size, big_endian>();
- Output_section* os;
- os = layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
- (elfcpp::SHF_ALLOC
- | elfcpp::SHF_WRITE),
- this->got_);
- os->set_is_relro();
+ layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_WRITE),
+ this->got_, ORDER_RELRO, true);
// Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
+ Symbol_table::PREDEFINED,
this->got_,
0, 0, elfcpp::STT_OBJECT,
elfcpp::STB_LOCAL,
gold_assert(layout != NULL);
this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
- elfcpp::SHF_ALLOC, this->rela_dyn_);
+ elfcpp::SHF_ALLOC, this->rela_dyn_,
+ ORDER_DYNAMIC_RELOCS, false);
}
return this->rela_dyn_;
}
return this->rel_;
}
+ // 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 4 * base_plt_entry_size; }
+
+ // Return the size of a PLT entry.
+ static unsigned int
+ get_plt_entry_size()
+ { return base_plt_entry_size; }
+
protected:
void do_adjust_output_section(Output_section* os);
{
this->rel_ = new Reloc_section(false);
layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
- elfcpp::SHF_ALLOC, this->rel_);
+ elfcpp::SHF_ALLOC, this->rel_,
+ ORDER_DYNAMIC_PLT_RELOCS, false);
}
template<int size, bool big_endian>
// Create the GOT sections first.
this->got_section(symtab, layout);
+ // Ensure that .rela.dyn always appears before .rela.plt This is
+ // necessary due to how, on Sparc and some other targets, .rela.dyn
+ // needs to include .rela.plt in it's range.
+ this->rela_dyn_section(layout);
+
this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
(elfcpp::SHF_ALLOC
| elfcpp::SHF_EXECINSTR
| elfcpp::SHF_WRITE),
- this->plt_);
+ this->plt_, ORDER_PLT, false);
// Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
+ Symbol_table::PREDEFINED,
this->plt_,
0, 0, elfcpp::STT_OBJECT,
elfcpp::STB_LOCAL,
this->plt_->add_entry(gsym);
}
+// Return the number of entries in the PLT.
+
+template<int size, bool big_endian>
+unsigned int
+Target_sparc<size, big_endian>::plt_entry_count() const
+{
+ if (this->plt_ == NULL)
+ return 0;
+ return this->plt_->entry_count();
+}
+
+// Return the offset of the first non-reserved PLT entry.
+
+template<int size, bool big_endian>
+unsigned int
+Target_sparc<size, big_endian>::first_plt_entry_offset() const
+{
+ return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset();
+}
+
+// Return the size of each PLT entry.
+
+template<int size, bool big_endian>
+unsigned int
+Target_sparc<size, big_endian>::plt_entry_size() const
+{
+ return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size();
+}
+
// Create a GOT entry for the TLS module index.
template<int size, bool big_endian>
if (parameters->options().output_is_position_independent())
{
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
check_non_pic(object, r_type);
if (lsym.get_st_type() != elfcpp::STT_SECTION)
{
- unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
data_shndx, reloc.get_r_offset(),
reloc.get_r_addend());
}
else
{
- unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
gold_assert(lsym.get_st_value() == 0);
- rela_dyn->add_local_relative(object, r_sym, orig_r_type,
- output_section, data_shndx,
- reloc.get_r_offset(),
- reloc.get_r_addend());
+ rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type,
+ output_section, data_shndx,
+ reloc.get_r_offset(),
+ reloc.get_r_addend());
}
}
break;
case elfcpp::R_SPARC_WDISP30:
+ case elfcpp::R_SPARC_WPLT30:
case elfcpp::R_SPARC_WDISP22:
case elfcpp::R_SPARC_WDISP19:
case elfcpp::R_SPARC_WDISP16:
case elfcpp::R_SPARC_PC22:
break;
+ case elfcpp::R_SPARC_GOTDATA_OP:
+ case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
+ case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
case elfcpp::R_SPARC_GOT10:
case elfcpp::R_SPARC_GOT13:
case elfcpp::R_SPARC_GOT22:
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
unsigned int off = got->add_constant(0);
- object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET,
- off);
- rela_dyn->add_local_relative(object, r_sym,
- (size == 64 ?
- elfcpp::R_SPARC_TLS_TPOFF64 :
- elfcpp::R_SPARC_TLS_TPOFF32),
- got, off, 0);
+ object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off);
+
+ rela_dyn->add_symbolless_local_addend(object, r_sym,
+ (size == 64 ?
+ elfcpp::R_SPARC_TLS_TPOFF64 :
+ elfcpp::R_SPARC_TLS_TPOFF32),
+ got, off, 0);
}
}
else if (optimized_type != tls::TLSOPT_TO_LE)
gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
- rela_dyn->add_local_relative(object, r_sym, r_type,
- output_section, data_shndx,
- reloc.get_r_offset(), 0);
+ rela_dyn->add_symbolless_local_addend(object, r_sym, r_type,
+ output_section, data_shndx,
+ reloc.get_r_offset(), 0);
}
break;
}
// Make a dynamic relocation if necessary.
if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
{
+ unsigned int r_off = reloc.get_r_offset();
+
+ // The assembler can sometimes emit unaligned relocations
+ // for dwarf2 cfi directives.
+ switch (r_type)
+ {
+ case elfcpp::R_SPARC_16:
+ if (r_off & 0x1)
+ orig_r_type = r_type = elfcpp::R_SPARC_UA16;
+ break;
+ case elfcpp::R_SPARC_32:
+ if (r_off & 0x3)
+ orig_r_type = r_type = elfcpp::R_SPARC_UA32;
+ break;
+ case elfcpp::R_SPARC_64:
+ if (r_off & 0x7)
+ orig_r_type = r_type = elfcpp::R_SPARC_UA64;
+ break;
+ case elfcpp::R_SPARC_UA16:
+ if (!(r_off & 0x1))
+ orig_r_type = r_type = elfcpp::R_SPARC_16;
+ break;
+ case elfcpp::R_SPARC_UA32:
+ if (!(r_off & 0x3))
+ orig_r_type = r_type = elfcpp::R_SPARC_32;
+ break;
+ case elfcpp::R_SPARC_UA64:
+ if (!(r_off & 0x7))
+ orig_r_type = r_type = elfcpp::R_SPARC_64;
+ break;
+ }
+
if (gsym->may_need_copy_reloc())
{
target->copy_reloc(symtab, layout, object,
reloc.get_r_offset(),
reloc.get_r_addend());
else
- rela_dyn->add_global_relative(gsym, orig_r_type,
- output_section, object,
- data_shndx,
- reloc.get_r_offset(),
- reloc.get_r_addend());
+ rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
+ output_section,
+ object, data_shndx,
+ reloc.get_r_offset(),
+ reloc.get_r_addend());
}
}
}
break;
+ case elfcpp::R_SPARC_GOTDATA_OP:
+ case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
+ case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
case elfcpp::R_SPARC_GOT10:
case elfcpp::R_SPARC_GOT13:
case elfcpp::R_SPARC_GOT22:
if (parameters->options().shared())
{
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
- rela_dyn->add_global_relative(gsym, orig_r_type,
- output_section, object,
- data_shndx, reloc.get_r_offset(),
- 0);
+ rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
+ output_section, object,
+ data_shndx, reloc.get_r_offset(),
+ 0);
}
break;
typedef Target_sparc<size, big_endian> Sparc;
typedef typename Target_sparc<size, big_endian>::Scan Scan;
- gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
+ gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
+ typename Target_sparc::Relocatable_size_for_reloc>(
symtab,
layout,
this,
void
Target_sparc<size, big_endian>::do_finalize_sections(
Layout* layout,
- const Input_objects*)
+ const Input_objects*,
+ Symbol_table*)
{
// Fill in some more dynamic tags.
- Output_data_dynamic* const odyn = layout->dynamic_data();
- if (odyn != NULL)
- {
- if (this->plt_ != NULL)
- {
- const Output_data* od = this->plt_->rel_plt();
- odyn->add_section_size(elfcpp::DT_PLTRELSZ, od);
- odyn->add_section_address(elfcpp::DT_JMPREL, od);
- odyn->add_constant(elfcpp::DT_PLTREL, elfcpp::DT_RELA);
-
- odyn->add_section_address(elfcpp::DT_PLTGOT, this->plt_);
- }
-
- if (this->rela_dyn_ != NULL)
- {
- const Output_data* od = this->rela_dyn_;
- odyn->add_section_address(elfcpp::DT_RELA, od);
- odyn->add_section_size(elfcpp::DT_RELASZ, od);
- odyn->add_constant(elfcpp::DT_RELAENT,
- elfcpp::Elf_sizes<size>::rela_size);
- }
-
- if (!parameters->options().shared())
- {
- // The value of the DT_DEBUG tag is filled in by the dynamic
- // linker at run time, and used by the debugger.
- odyn->add_constant(elfcpp::DT_DEBUG, 0);
- }
- }
+ const Reloc_section* rel_plt = (this->plt_ == NULL
+ ? NULL
+ : this->plt_->rel_plt());
+ layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
+ this->rela_dyn_, true, true);
// Emit any relocs we saved in an attempt to avoid generating COPY
// relocs.
// Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
// pointer points to the beginning, not the end, of the table.
// So we just use the plain offset.
- bool have_got_offset = false;
unsigned int got_offset = 0;
switch (r_type)
{
+ case elfcpp::R_SPARC_GOTDATA_OP:
+ case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
+ case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
case elfcpp::R_SPARC_GOT10:
case elfcpp::R_SPARC_GOT13:
case elfcpp::R_SPARC_GOT22:
gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
}
- have_got_offset = true;
break;
default:
break;
case elfcpp::R_SPARC_16:
- Relocate_functions<size, big_endian>::rela16(view, object,
- psymval, addend);
+ if (rela.get_r_offset() & 0x1)
+ {
+ // The assembler can sometimes emit unaligned relocations
+ // for dwarf2 cfi directives.
+ Reloc::ua16(view, object, psymval, addend);
+ }
+ else
+ Relocate_functions<size, big_endian>::rela16(view, object,
+ psymval, addend);
break;
case elfcpp::R_SPARC_32:
if (!parameters->options().output_is_position_independent())
- Relocate_functions<size, big_endian>::rela32(view, object,
- psymval, addend);
+ {
+ if (rela.get_r_offset() & 0x3)
+ {
+ // The assembler can sometimes emit unaligned relocations
+ // for dwarf2 cfi directives.
+ Reloc::ua32(view, object, psymval, addend);
+ }
+ else
+ Relocate_functions<size, big_endian>::rela32(view, object,
+ psymval, addend);
+ }
break;
case elfcpp::R_SPARC_DISP8:
Reloc::lo10(view, got_offset, addend);
break;
+ case elfcpp::R_SPARC_GOTDATA_OP:
+ break;
+
+ case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
case elfcpp::R_SPARC_GOT13:
Reloc::rela32_13(view, got_offset, addend);
break;
+ case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
case elfcpp::R_SPARC_GOT22:
Reloc::hi22(view, got_offset, addend);
break;
case elfcpp::R_SPARC_64:
if (!parameters->options().output_is_position_independent())
- Relocate_functions<size, big_endian>::rela64(view, object,
- psymval, addend);
+ {
+ if (rela.get_r_offset() & 0x7)
+ {
+ // The assembler can sometimes emit unaligned relocations
+ // for dwarf2 cfi directives.
+ Reloc::ua64(view, object, psymval, addend);
+ }
+ else
+ Relocate_functions<size, big_endian>::rela64(view, object,
+ psymval, addend);
+ }
break;
case elfcpp::R_SPARC_OLO10:
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