// target.h -- target support for gold -*- C++ -*-
-// Copyright (C) 2006-2014 Free Software Foundation, Inc.
+// Copyright (C) 2006-2015 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include "elfcpp.h"
#include "options.h"
#include "parameters.h"
+#include "stringpool.h"
#include "debug.h"
namespace gold
class Input_objects;
class Task;
struct Symbol_location;
+class Versions;
// The abstract class for target specific handling.
void
calls_non_split(Relobj* object, unsigned int shndx,
section_offset_type fnoffset, section_size_type fnsize,
+ const unsigned char* prelocs, size_t reloc_count,
unsigned char* view, section_size_type view_size,
std::string* from, std::string* to) const
{
- this->do_calls_non_split(object, shndx, fnoffset, fnsize, view, view_size,
+ this->do_calls_non_split(object, shndx, fnoffset, fnsize,
+ prelocs, reloc_count, view, view_size,
from, to);
}
entry_symbol_name() const
{ return this->pti_->entry_symbol_name; }
+ // Return the size in bits of SHT_HASH entry.
+ int
+ hash_entry_size() const
+ { return this->pti_->hash_entry_size; }
+
+ // Whether the target has a custom set_dynsym_indexes method.
+ bool
+ has_custom_set_dynsym_indexes() const
+ { return this->do_has_custom_set_dynsym_indexes(); }
+
+ // Custom set_dynsym_indexes method for a target.
+ unsigned int
+ set_dynsym_indexes(std::vector<Symbol*>* dyn_symbols, unsigned int index,
+ std::vector<Symbol*>* syms, Stringpool* dynpool,
+ Versions* versions, Symbol_table* symtab) const
+ {
+ return this->do_set_dynsym_indexes(dyn_symbols, index, syms, dynpool,
+ versions, symtab);
+ }
+
+ // Get the custom dynamic tag value.
+ unsigned int
+ dynamic_tag_custom_value(elfcpp::DT tag) const
+ { return this->do_dynamic_tag_custom_value(tag); }
+
+ // Adjust the value written to the dynamic symbol table.
+ void
+ adjust_dyn_symbol(const Symbol* sym, unsigned char* view) const
+ { this->do_adjust_dyn_symbol(sym, view); }
+
+ // Return whether to include the section in the link.
+ bool
+ should_include_section(elfcpp::Elf_Word sh_type) const
+ { return this->do_should_include_section(sh_type); }
+
protected:
// This struct holds the constant information for a child class. We
// use a struct to avoid the overhead of virtual function calls for
const char* attributes_vendor;
// Name of the main entry point to the program.
const char* entry_symbol_name;
+ // Size (in bits) of SHT_HASH entry. Always equal to 32, except for
+ // 64-bit S/390.
+ const int hash_entry_size;
};
Target(const Target_info* pti)
// Virtual function which may be overridden by the child class.
virtual void
do_calls_non_split(Relobj* object, unsigned int, section_offset_type,
- section_size_type, unsigned char*, section_size_type,
+ section_size_type, const unsigned char*, size_t,
+ unsigned char*, section_size_type,
std::string*, std::string*) const;
// make_elf_object hooks. There are four versions of these for
do_gc_mark_symbol(Symbol_table*, Symbol*) const
{ }
+ // This may be overridden by the child class.
+ virtual bool
+ do_has_custom_set_dynsym_indexes() const
+ { return false; }
+
+ // This may be overridden by the child class.
+ virtual unsigned int
+ do_set_dynsym_indexes(std::vector<Symbol*>*, unsigned int,
+ std::vector<Symbol*>*, Stringpool*, Versions*,
+ Symbol_table*) const
+ { gold_unreachable(); }
+
+ // This may be overridden by the child class.
+ virtual unsigned int
+ do_dynamic_tag_custom_value(elfcpp::DT) const
+ { gold_unreachable(); }
+
+ // This may be overridden by the child class.
+ virtual void
+ do_adjust_dyn_symbol(const Symbol*, unsigned char*) const
+ { }
+
+ // This may be overridden by the child class.
+ virtual bool
+ do_should_include_section(elfcpp::Elf_Word) const
+ { return true; }
+
private:
// The implementations of the four do_make_elf_object virtual functions are
// almost identical except for their sizes and endianness. We use a template.
Output_section* output_section,
typename elfcpp::Elf_types<size>::Elf_Off
offset_in_output_section,
- const Relocatable_relocs*,
unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
section_size_type view_size,
plt_entry_size() const
{ gold_unreachable(); }
+ // Return the size of each GOT entry. This is only used for
+ // laying out the incremental link info sections. A target needs
+ // to implement this if its GOT size is different.
+
+ virtual unsigned int
+ got_entry_size() const
+ { return size / 8; }
+
// Create the GOT and PLT sections for an incremental update.
// A target needs to implement this to support incremental linking.
// and DST_OFF.
void
gc_add_reference(Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
typename elfcpp::Elf_types<size>::Elf_Addr dst_off) const
{
// Handle target specific gc actions when adding a gc reference.
virtual void
- do_gc_add_reference(Symbol_table*, Object*, unsigned int,
- Object*, unsigned int,
+ do_gc_add_reference(Symbol_table*, Relobj*, unsigned int,
+ Relobj*, unsigned int,
typename elfcpp::Elf_types<size>::Elf_Addr) const
{ }
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