// target-select.h -- select a target for an object file -*- C++ -*-
-// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+// Copyright (C) 2006-2020 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
namespace gold
{
+class Input_file;
class Target;
class Target_selector;
// or 64), and endianness. The machine number can be EM_NONE to
// test for any machine number. BFD_NAME is the name of the target
// used by the GNU linker, for backward compatibility; it may be
- // NULL.
+ // NULL. EMULATION is the name of the emulation used by the GNU
+ // linker; it is similar to BFD_NAME.
Target_selector(int machine, int size, bool is_big_endian,
- const char* bfd_name);
+ const char* bfd_name, const char* emulation);
virtual ~Target_selector()
{ }
// If we can handle this target, return a pointer to a target
// structure. The size and endianness are known.
Target*
- recognize(int machine, int osabi, int abiversion)
- { return this->do_recognize(machine, osabi, abiversion); }
+ recognize(Input_file* input_file, off_t offset,
+ int machine, int osabi, int abiversion)
+ { return this->do_recognize(input_file, offset, machine, osabi, abiversion); }
// If NAME matches the target, return a pointer to a target
// structure.
Target*
- recognize_by_name(const char* name)
- { return this->do_recognize_by_name(name); }
+ recognize_by_bfd_name(const char* name)
+ { return this->do_recognize_by_bfd_name(name); }
- // Push all supported names onto the vector. This is only used for
- // help output.
+ // Push all supported BFD names onto the vector. This is only used
+ // for help output.
void
- supported_names(std::vector<const char*>* names)
- { this->do_supported_names(names); }
+ supported_bfd_names(std::vector<const char*>* names)
+ { this->do_supported_bfd_names(names); }
+
+ // If NAME matches the target emulation, return a pointer to a
+ // target structure.
+ Target*
+ recognize_by_emulation(const char* name)
+ { return this->do_recognize_by_emulation(name); }
+
+ // Push all supported emulations onto the vector. This is only used
+ // for help output.
+ void
+ supported_emulations(std::vector<const char*>* names)
+ { this->do_supported_emulations(names); }
// Return the next Target_selector in the linked list.
Target_selector*
{ return this->is_big_endian_; }
// Return the BFD name. This may return NULL, in which case the
- // do_recognize_by_name hook will be responsible for matching the
- // BFD name.
+ // do_recognize_by_bfd_name hook will be responsible for matching
+ // the BFD name.
const char*
bfd_name() const
{ return this->bfd_name_; }
+ // Return the emulation. This may return NULL, in which case the
+ // do_recognize_by_emulation hook will be responsible for matching
+ // the emulation.
+ const char*
+ emulation() const
+ { return this->emulation_; }
+
+ // The reverse mapping, for --print-output-format: if we
+ // instantiated TARGET, return our BFD_NAME. If we did not
+ // instantiate it, return NULL.
+ const char*
+ target_bfd_name(const Target* target)
+ { return this->do_target_bfd_name(target); }
+
protected:
// Return an instance of the real target. This must be implemented
// by the child class.
// checks, or to check for multiple machine codes if the machine_
// field is EM_NONE.
virtual Target*
- do_recognize(int, int, int)
+ do_recognize(Input_file*, off_t, int, int, int)
{ return this->instantiate_target(); }
// Recognize a target by name. When this is called we already know
// child class may implement a different version of this to
// recognize more than one name.
virtual Target*
- do_recognize_by_name(const char*)
+ do_recognize_by_bfd_name(const char*)
{ return this->instantiate_target(); }
// Return a list of supported BFD names. The child class may
// implement a different version of this to handle more than one
// name.
virtual void
- do_supported_names(std::vector<const char*>* names)
+ do_supported_bfd_names(std::vector<const char*>* names)
{
gold_assert(this->bfd_name_ != NULL);
names->push_back(this->bfd_name_);
}
+ // Recognize a target by emulation. When this is called we already
+ // know that the name matches (or that the emulation_ field is
+ // NULL). The child class may implement a different version of this
+ // to recognize more than one emulation.
+ virtual Target*
+ do_recognize_by_emulation(const char*)
+ { return this->instantiate_target(); }
+
+ // Return a list of supported emulations. The child class may
+ // implement a different version of this to handle more than one
+ // emulation.
+ virtual void
+ do_supported_emulations(std::vector<const char*>* emulations)
+ {
+ gold_assert(this->emulation_ != NULL);
+ emulations->push_back(this->emulation_);
+ }
+
+ // Map from target to BFD name.
+ virtual const char*
+ do_target_bfd_name(const Target*);
+
// Instantiate the target and return it.
Target*
instantiate_target();
+ // Return whether TARGET is the target we instantiated.
+ bool
+ is_our_target(const Target* target)
+ { return target == this->instantiated_target_; }
+
private:
// Set the target.
void
const bool is_big_endian_;
// BFD name of target, for compatibility.
const char* const bfd_name_;
+ // GNU linker emulation for this target, for compatibility.
+ const char* const emulation_;
// Next entry in list built at global constructor time.
Target_selector* next_;
// The singleton Target structure--this points to an instance of the
// Select the target for an ELF file.
extern Target*
-select_target(int machine, int size, bool big_endian, int osabi,
+select_target(Input_file*, off_t,
+ int machine, int size, bool big_endian, int osabi,
int abiversion);
// Select a target using a BFD name.
extern Target*
-select_target_by_name(const char* name);
+select_target_by_bfd_name(const char* name);
+
+// Select a target using a GNU linker emulation.
+
+extern Target*
+select_target_by_emulation(const char* name);
// Fill in a vector with the list of supported targets. This returns
// a list of BFD names.
extern void
supported_target_names(std::vector<const char*>*);
+// Fill in a vector with the list of supported emulations.
+
+extern void
+supported_emulation_names(std::vector<const char*>*);
+
+// Print the output format, for the --print-output-format option.
+
+extern void
+print_output_format();
+
} // End namespace gold.
#endif // !defined(GOLD_TARGET_SELECT_H)
projects / deliverable / binutils-gdb.git / blobdiff