section_addralign(unsigned int shndx)
{ return this->do_section_addralign(shndx); }
+ // Return the output section given a section index.
+ Output_section*
+ output_section(unsigned int shndx) const
+ { return this->do_output_section(shndx); }
+
+ // Given a section index, return the offset in the Output_section.
+ // The return value will be -1U if the section is specially mapped,
+ // such as a merge section.
+ uint64_t
+ output_section_offset(unsigned int shndx) const
+ { return this->do_output_section_offset(shndx); }
+
// Read the symbol information.
void
read_symbols(Read_symbols_data* sd)
section_size_type* uncompressed_size) const
{ return this->do_section_is_compressed(shndx, uncompressed_size); }
+ // Return the index of the first incremental relocation for symbol SYMNDX.
+ unsigned int
+ get_incremental_reloc_base(unsigned int symndx) const
+ { return this->do_get_incremental_reloc_base(symndx); }
+
+ // Return the number of incremental relocations for symbol SYMNDX.
+ unsigned int
+ get_incremental_reloc_count(unsigned int symndx) const
+ { return this->do_get_incremental_reloc_count(symndx); }
+
protected:
// Returns NULL for Objects that are not plugin objects. This method
// is overridden in the Pluginobj class.
virtual uint64_t
do_section_addralign(unsigned int shndx) = 0;
+ // Return the output section given a section index--implemented
+ // by child class.
+ virtual Output_section*
+ do_output_section(unsigned int) const
+ { gold_unreachable(); }
+
+ // Get the offset of a section--implemented by child class.
+ virtual uint64_t
+ do_output_section_offset(unsigned int) const
+ { gold_unreachable(); }
+
// Return the Xindex structure to use.
virtual Xindex*
do_initialize_xindex() = 0;
do_section_is_compressed(unsigned int, section_size_type*) const
{ return false; }
+ // Return the index of the first incremental relocation for symbol SYMNDX--
+ // implemented by child class.
+ virtual unsigned int
+ do_get_incremental_reloc_base(unsigned int) const
+ { gold_unreachable(); }
+
+ // Return the number of incremental relocations for symbol SYMNDX--
+ // implemented by child class.
+ virtual unsigned int
+ do_get_incremental_reloc_count(unsigned int) const
+ { gold_unreachable(); }
+
private:
// This class may not be copied.
Object(const Object&);
map_to_relocatable_relocs_(NULL),
object_merge_map_(NULL),
relocs_must_follow_section_writes_(false),
- sd_(NULL)
+ sd_(NULL),
+ reloc_counts_(NULL),
+ reloc_bases_(NULL)
{ }
// During garbage collection, the Read_symbols_data pass for
return this->output_sections_[shndx] != NULL;
}
- // Given a section index, return the corresponding Output_section.
- // The return value will be NULL if the section is not included in
- // the link.
- Output_section*
- output_section(unsigned int shndx) const
- {
- gold_assert(shndx < this->output_sections_.size());
- return this->output_sections_[shndx];
- }
-
// The the output section of the input section with index SHNDX.
// This is only used currently to remove a section from the link in
// relaxation.
this->output_sections_[shndx] = os;
}
- // Given a section index, return the offset in the Output_section.
- // The return value will be -1U if the section is specially mapped,
- // such as a merge section.
- uint64_t
- output_section_offset(unsigned int shndx) const
- { return this->do_output_section_offset(shndx); }
-
// Set the offset of an input section within its output section.
void
set_section_offset(unsigned int shndx, uint64_t off)
layout_deferred_sections(Layout* layout)
{ this->do_layout_deferred_sections(layout); }
+ // Return the index of the first incremental relocation for symbol SYMNDX.
+ virtual unsigned int
+ do_get_incremental_reloc_base(unsigned int symndx) const
+ { return this->reloc_bases_[symndx]; }
+
+ // Return the number of incremental relocations for symbol SYMNDX.
+ virtual unsigned int
+ do_get_incremental_reloc_count(unsigned int symndx) const
+ { return this->reloc_counts_[symndx]; }
+
protected:
// The output section to be used for each input section, indexed by
// the input section number. The output section is NULL if the
virtual void
do_relocate(const Symbol_table* symtab, const Layout*, Output_file* of) = 0;
- // Get the offset of a section--implemented by child class.
- virtual uint64_t
- do_output_section_offset(unsigned int shndx) const = 0;
-
// Set the offset of a section--implemented by child class.
virtual void
do_set_section_offset(unsigned int shndx, uint64_t off) = 0;
virtual void
do_layout_deferred_sections(Layout*) = 0;
+ // Given a section index, return the corresponding Output_section.
+ // The return value will be NULL if the section is not included in
+ // the link.
+ Output_section*
+ do_output_section(unsigned int shndx) const
+ {
+ gold_assert(shndx < this->output_sections_.size());
+ return this->output_sections_[shndx];
+ }
+
// Return the vector mapping input sections to output sections.
Output_sections&
output_sections()
set_relocs_must_follow_section_writes()
{ this->relocs_must_follow_section_writes_ = true; }
+ // Allocate the array for counting incremental relocations.
+ void
+ allocate_incremental_reloc_counts()
+ {
+ unsigned int nsyms = this->do_get_global_symbols()->size();
+ this->reloc_counts_ = new unsigned int[nsyms];
+ gold_assert(this->reloc_counts_ != NULL);
+ memset(this->reloc_counts_, 0, nsyms * sizeof(unsigned int));
+ }
+
+ // Record a relocation in this object referencing global symbol SYMNDX.
+ // Used for tracking incremental link information.
+ void
+ count_incremental_reloc(unsigned int symndx)
+ {
+ unsigned int nsyms = this->do_get_global_symbols()->size();
+ gold_assert(symndx < nsyms);
+ gold_assert(this->reloc_counts_ != NULL);
+ ++this->reloc_counts_[symndx];
+ }
+
+ // Finalize the incremental relocation information.
+ void
+ finalize_incremental_relocs(Layout* layout);
+
+ // Return the index of the next relocation to be written for global symbol
+ // SYMNDX. Only valid after finalize_incremental_relocs() has been called.
+ unsigned int
+ next_incremental_reloc_index(unsigned int symndx)
+ {
+ unsigned int nsyms = this->do_get_global_symbols()->size();
+
+ gold_assert(this->reloc_counts_ != NULL);
+ gold_assert(this->reloc_bases_ != NULL);
+ gold_assert(symndx < nsyms);
+
+ unsigned int counter = this->reloc_counts_[symndx]++;
+ return this->reloc_bases_[symndx] + counter;
+ }
+
private:
// Mapping from input sections to output section.
Output_sections output_sections_;
// Again used during garbage collection when laying out referenced
// sections.
gold::Symbols_data *sd_;
+ // Per-symbol counts of relocations, for incremental links.
+ unsigned int* reloc_counts_;
+ // Per-symbol base indexes of relocations, for incremental links.
+ unsigned int* reloc_bases_;
};
// This class is used to handle relocations against a section symbol
// This may be overriden by a child class.
virtual void
do_relocate_sections(const Symbol_table* symtab, const Layout* layout,
- const unsigned char* pshdrs, Views* pviews);
+ const unsigned char* pshdrs, Output_file* of,
+ Views* pviews);
// Allow a child to set output local symbol count.
void
// Relocate the sections in the output file.
void
relocate_sections(const Symbol_table* symtab, const Layout* layout,
- const unsigned char* pshdrs, Views* pviews)
- { this->do_relocate_sections(symtab, layout, pshdrs, pviews); }
+ const unsigned char* pshdrs, Output_file* of,
+ Views* pviews)
+ { this->do_relocate_sections(symtab, layout, pshdrs, of, pviews); }
// Scan the input relocations for --emit-relocs.
void
unsigned char* reloc_view,
section_size_type reloc_view_size);
+ // Scan the input relocations for --incremental.
+ void
+ incremental_relocs_scan(const Read_relocs_data::Relocs_list::iterator&);
+
+ // Scan the input relocations for --incremental, templatized on the
+ // type of the relocation section.
+ template<int sh_type>
+ void
+ incremental_relocs_scan_reltype(
+ const Read_relocs_data::Relocs_list::iterator&);
+
+ void
+ incremental_relocs_write(const Relocate_info<size, big_endian>*,
+ unsigned int sh_type,
+ const unsigned char* prelocs,
+ size_t reloc_count,
+ Output_section*,
+ Address output_offset,
+ Output_file*);
+
+ template<int sh_type>
+ void
+ incremental_relocs_write_reltype(const Relocate_info<size, big_endian>*,
+ const unsigned char* prelocs,
+ size_t reloc_count,
+ Output_section*,
+ Address output_offset,
+ Output_file*);
+
// A type shared by split_stack_adjust_reltype and find_functions.
typedef std::map<section_offset_type, section_size_type> Function_offsets;
OSDN Git Service
