// freebsd.h -- FreeBSD support for gold -*- C++ -*-
-// Copyright 2009 Free Software Foundation, Inc.
+// Copyright (C) 2009-2019 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
{
// FreeBSD 4.1 and later wants the EI_OSABI field in the ELF header to
-// be set to ELFOSABI_FREEBSD. This is a subclass of Sized_target
-// which supports that. The real target would be a subclass of this
-// one. We permit combining FreeBSD and non-FreeBSD object files.
-// The effect of this target is to set the code in the output file.
-
-template<int size, bool big_endian>
-class Target_freebsd : public Sized_target<size, big_endian>
-{
- public:
- // Set the value to use for the EI_OSABI field in the ELF header.
- void
- set_osabi(elfcpp::ELFOSABI osabi)
- { this->osabi_ = osabi; }
-
- protected:
- Target_freebsd(const Target::Target_info* pti)
- : Sized_target<size, big_endian>(pti),
- osabi_(elfcpp::ELFOSABI_NONE)
- { }
-
- virtual void
- do_adjust_elf_header(unsigned char* view, int len) const;
-
- private:
- // Value to store in the EI_OSABI field of the ELF file header.
- elfcpp::ELFOSABI osabi_;
-};
-
-// Adjust the ELF file header by storing the requested value in the
-// OSABI field. This is for FreeBSD support.
-
-template<int size, bool big_endian>
-inline void
-Target_freebsd<size, big_endian>::do_adjust_elf_header(unsigned char* view,
- int len) const
-{
- if (this->osabi_ != elfcpp::ELFOSABI_NONE)
- {
- gold_assert(len == elfcpp::Elf_sizes<size>::ehdr_size);
-
- elfcpp::Ehdr<size, false> ehdr(view);
- unsigned char e_ident[elfcpp::EI_NIDENT];
- memcpy(e_ident, ehdr.get_e_ident(), elfcpp::EI_NIDENT);
-
- e_ident[elfcpp::EI_OSABI] = this->osabi_;
-
- elfcpp::Ehdr_write<size, false> oehdr(view);
- oehdr.put_e_ident(e_ident);
- }
-}
-
-// A target selector for targets which permit combining both FreeBSD
-// and non-FreeBSD object files.
+// be set to ELFOSABI_FREEBSD. This is a target selector for targets
+// which permit combining both FreeBSD and non-FreeBSD object files.
class Target_selector_freebsd : public Target_selector
{
public:
- Target_selector_freebsd(int amachine, int size, bool is_big_end,
- const char* bfdname,
- const char* freebsd_bfd_name)
- : Target_selector(amachine, size, is_big_end, NULL),
- bfd_name_(bfdname), freebsd_bfd_name_(freebsd_bfd_name)
+ Target_selector_freebsd(int machine, int size, bool is_big_endian,
+ const char* bfd_name,
+ const char* freebsd_bfd_name,
+ const char* emulation)
+ : Target_selector(machine, size, is_big_endian, NULL, emulation),
+ bfd_name_(bfd_name), freebsd_bfd_name_(freebsd_bfd_name)
{ }
protected:
// If we see a FreeBSD input file, mark the output file as using
// FreeBSD.
virtual Target*
- do_recognize(int, int osabi, int)
+ do_recognize(Input_file*, off_t, int, int osabi, int)
{
Target* ret = this->instantiate_target();
if (osabi == elfcpp::ELFOSABI_FREEBSD)
- this->set_osabi(ret);
+ ret->set_osabi(static_cast<elfcpp::ELFOSABI>(osabi));
return ret;
}
-
+
// Recognize two names.
virtual Target*
- do_recognize_by_name(const char* name)
+ do_recognize_by_bfd_name(const char* name)
{
if (strcmp(name, this->bfd_name_) == 0)
return this->instantiate_target();
else if (strcmp(name, this->freebsd_bfd_name_) == 0)
{
Target* ret = this->instantiate_target();
- this->set_osabi(ret);
+ ret->set_osabi(elfcpp::ELFOSABI_FREEBSD);
return ret;
}
else
// Print both names in --help output.
virtual void
- do_supported_names(std::vector<const char*>* names)
+ do_supported_bfd_names(std::vector<const char*>* names)
{
names->push_back(this->bfd_name_);
names->push_back(this->freebsd_bfd_name_);
}
- private:
- // Set the OSABI field. This is quite ugly.
- void
- set_osabi(Target* target)
+ // Return appropriate BFD name.
+ virtual const char*
+ do_target_bfd_name(const Target* target)
{
- if (this->get_size() == 32)
- {
- if (this->is_big_endian())
- static_cast<Target_freebsd<32, true>*>(target)->
- set_osabi(elfcpp::ELFOSABI_FREEBSD);
- else
- static_cast<Target_freebsd<32, false>*>(target)->
- set_osabi(elfcpp::ELFOSABI_FREEBSD);
- }
- else if (this->get_size() == 64)
- {
- if (this->is_big_endian())
- static_cast<Target_freebsd<64, true>*>(target)->
- set_osabi(elfcpp::ELFOSABI_FREEBSD);
- else
- static_cast<Target_freebsd<64, false>*>(target)->
- set_osabi(elfcpp::ELFOSABI_FREEBSD);
- }
- else
- gold_unreachable();
+ if (!this->is_our_target(target))
+ return NULL;
+ return (target->osabi() == elfcpp::ELFOSABI_FREEBSD
+ ? this->freebsd_bfd_name_
+ : this->bfd_name_);
}
+ private:
// The BFD name for the non-Freebsd target.
const char* bfd_name_;
// The BFD name for the Freebsd target.