* freebsd.h: New file.
* i386.cc: Include "freebsd.h".
(Target_i386): Derive from Target_freebsd rather than
Sized_target.
(Target_selector_i386): Derive from Target_selector_freebsd rather
than Target_selector.
* x86_64.cc: Include "freebsd.h".
(Target_x86_64): Derive from Target_freebsd rather than
Sized_target.
(Target_selector_x86_64): Derive from Target_selector_freebsd
rather than Target_selector.
* target.h (class Target): Add adjust_elf_header and
do_adjust_elf_header.
* output.cc (Output_file_header:: do_sized_write): Call target
adjust_elf_header routine.
* configure.tgt: Set targ_osabi.
* configure.ac: Define GOLD_DEFAULT_OSABI.
* parameters.cc (Parameters::default_target): Pass
GOLD_DEFAULT_OSABI to select_target.
* target-select.h (class Target_selector): Make instantiate_target
protected rather than private.
* Makefile.am (HFILES): Add freebsd.h.
* configure, Makefile.in, config.in: Rebuild.
2009-03-23 Ian Lance Taylor <iant@google.com>
+ * freebsd.h: New file.
+ * i386.cc: Include "freebsd.h".
+ (Target_i386): Derive from Target_freebsd rather than
+ Sized_target.
+ (Target_selector_i386): Derive from Target_selector_freebsd rather
+ than Target_selector.
+ * x86_64.cc: Include "freebsd.h".
+ (Target_x86_64): Derive from Target_freebsd rather than
+ Sized_target.
+ (Target_selector_x86_64): Derive from Target_selector_freebsd
+ rather than Target_selector.
+ * target.h (class Target): Add adjust_elf_header and
+ do_adjust_elf_header.
+ * output.cc (Output_file_header:: do_sized_write): Call target
+ adjust_elf_header routine.
+ * configure.tgt: Set targ_osabi.
+ * configure.ac: Define GOLD_DEFAULT_OSABI.
+ * parameters.cc (Parameters::default_target): Pass
+ GOLD_DEFAULT_OSABI to select_target.
+ * target-select.h (class Target_selector): Make instantiate_target
+ protected rather than private.
+ * Makefile.am (HFILES): Add freebsd.h.
+ * configure, Makefile.in, config.in: Rebuild.
+
* merge.cc (do_add_input_section): Correct pend value. Change
message about last entry not being null terminated from error to
warning.
ehframe.h \
errors.h \
fileread.h \
+ freebsd.h \
gc.h \
gold.h \
gold-threads.h \
ehframe.h \
errors.h \
fileread.h \
+ freebsd.h \
gc.h \
gold.h \
gold-threads.h \
/* Default machine code */
#undef GOLD_DEFAULT_MACHINE
+/* Default OSABI code */
+#undef GOLD_DEFAULT_OSABI
+
/* Default size (32 or 64) */
#undef GOLD_DEFAULT_SIZE
default_machine=
default_size=
default_big_endian=
+default_osabi=ELFOSABI_NONE
targ_32_little=
targ_32_big=
targ_64_little=
default_machine=$targ_machine
default_size=$targ_size
default_big_endian=$targ_big_endian
+ default_osabi=$targ_osabi
fi
fi
fi
_ACEOF
+cat >>confdefs.h <<_ACEOF
+#define GOLD_DEFAULT_OSABI $default_osabi
+_ACEOF
+
+
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
default_machine=
default_size=
default_big_endian=
+default_osabi=ELFOSABI_NONE
targ_32_little=
targ_32_big=
targ_64_little=
default_machine=$targ_machine
default_size=$targ_size
default_big_endian=$targ_big_endian
+ default_osabi=$targ_osabi
fi
fi
fi
[Default size (32 or 64)])
AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
[Default big endian (true or false)])
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
+ [Default OSABI code])
AC_PROG_CC
AC_PROG_CXX
# configure.tgt -- target configuration for gold -*- sh -*-
-# Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
# Written by Ian Lance Taylor <iant@google.com>.
# This file is part of gold.
# targ_extra_size extra targ_size setting for the target
# targ_big_endian whether the target is big-endian--true or false
# targ_extra_big_endian extra targ_big_endian setting for the target
+# targ_osabi EI_OSABI value
# If the target is not recognized targ_obj is set to "UNKNOWN".
targ_extra_size=
targ_big_endian=
targ_extra_big_endian=
+targ_osabi=ELFOSABI_NONE
case "$targ" in
i?86-*)
targ_obj=i386
targ_machine=EM_386
targ_size=32
targ_big_endian=false
+ case "$targ" in
+ i?86-*-freebsd*)
+ targ_osabi=ELFOSABI_FREEBSD
+ ;;
+ esac
;;
x86_64*)
targ_obj=x86_64
targ_size=64
targ_extra_size=32
targ_big_endian=false
+ case "$targ" in
+ x86_64-*-freebsd*)
+ targ_osabi=ELFOSABI_FREEBSD
+ ;;
+ esac
;;
sparc-*)
targ_obj=sparc
--- /dev/null
+// freebsd.h -- FreeBSD support for gold -*- C++ -*-
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#include "target.h"
+#include "target-select.h"
+
+#ifndef GOLD_FREEBSD_H
+#define GOLD_FREEBSD_H
+
+namespace 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<32>::ehdr_size);
+
+ elfcpp::Ehdr<32, 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<32, false> oehdr(view);
+ oehdr.put_e_ident(e_ident);
+ }
+}
+
+// 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 machine, int size, bool is_big_endian,
+ const char* bfd_name,
+ const char* freebsd_bfd_name)
+ : Target_selector(machine, size, is_big_endian, NULL),
+ 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)
+ {
+ Target* ret = this->instantiate_target();
+ if (osabi == elfcpp::ELFOSABI_FREEBSD)
+ this->set_osabi(ret);
+ return ret;
+ }
+
+ // Recognize two names.
+ virtual Target*
+ do_recognize_by_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);
+ return ret;
+ }
+ else
+ return NULL;
+ }
+
+ // Print both names in --help output.
+ virtual void
+ do_supported_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)
+ {
+ 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();
+ }
+
+ // The BFD name for the non-Freebsd target.
+ const char* bfd_name_;
+ // The BFD name for the Freebsd target.
+ const char* freebsd_bfd_name_;
+};
+
+} // end namespace gold
+
+#endif // !defined(GOLD_FREEBSD_H)
#include "target-reloc.h"
#include "target-select.h"
#include "tls.h"
+#include "freebsd.h"
namespace
{
// http://people.redhat.com/drepper/tls.pdf
// http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt
-class Target_i386 : public Sized_target<32, false>
+class Target_i386 : public Target_freebsd<32, false>
{
public:
typedef Output_data_reloc<elfcpp::SHT_REL, true, 32, false> Reloc_section;
Target_i386()
- : Sized_target<32, false>(&i386_info),
+ : Target_freebsd<32, false>(&i386_info),
got_(NULL), plt_(NULL), got_plt_(NULL), rel_dyn_(NULL),
copy_relocs_(elfcpp::R_386_COPY), dynbss_(NULL),
got_mod_index_offset_(-1U), tls_base_symbol_defined_(false)
// The selector for i386 object files.
-class Target_selector_i386 : public Target_selector
+class Target_selector_i386 : public Target_selector_freebsd
{
public:
Target_selector_i386()
- : Target_selector(elfcpp::EM_386, 32, false, "elf32-i386")
+ : Target_selector_freebsd(elfcpp::EM_386, 32, false,
+ "elf32-i386", "elf32-i386-freebsd")
{ }
Target*
? elfcpp::ELFDATA2MSB
: elfcpp::ELFDATA2LSB);
e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT;
- // FIXME: Some targets may need to set EI_OSABI and EI_ABIVERSION.
oehdr.put_e_ident(e_ident);
elfcpp::ET e_type;
else
oehdr.put_e_shstrndx(elfcpp::SHN_XINDEX);
+ // Let the target adjust the ELF header, e.g., to set EI_OSABI in
+ // the e_ident field.
+ parameters->target().adjust_elf_header(view, ehdr_size);
+
of->write_output_view(0, ehdr_size, view);
}
const Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
GOLD_DEFAULT_SIZE,
GOLD_DEFAULT_BIG_ENDIAN,
- 0, 0);
+ elfcpp::GOLD_DEFAULT_OSABI,
+ 0);
gold_assert(target != NULL);
return *target;
}
virtual Target*
do_instantiate_target() = 0;
- // Recognize an object file given a machine code, size, and
- // endianness. When this is called we already know that they match
- // the machine_, size_, and is_big_endian_ fields. The child class
- // may implement a different version of this to do additional
+ // Recognize an object file given a machine code, OSABI code, and
+ // ELF version value. When this is called we already know that they
+ // match the machine_, size_, and is_big_endian_ fields. The child
+ // class may implement a different version of this to do additional
// checks, or to check for multiple machine codes if the machine_
// field is EM_NONE.
virtual Target*
names->push_back(this->bfd_name_);
}
- private:
// Instantiate the target and return it.
Target*
instantiate_target()
return this->instantiated_target_;
}
+ private:
// ELF machine code.
const int machine_;
// Target size--32 or 64.
is_defined_by_abi(const Symbol* sym) const
{ return this->do_is_defined_by_abi(sym); }
+ // Adjust the output file header before it is written out. VIEW
+ // points to the header in external form. LEN is the length.
+ void
+ adjust_elf_header(unsigned char* view, int len) const
+ { return this->do_adjust_elf_header(view, len); }
+
protected:
// This struct holds the constant information for a child class. We
// use a struct to avoid the overhead of virtual function calls for
do_is_defined_by_abi(const Symbol*) const
{ return false; }
+ // Adjust the output file header before it is written out. VIEW
+ // points to the header in external form. LEN is the length, and
+ // will be one of the values of elfcpp::Elf_sizes<size>::ehdr_size.
+ // By default, we do nothing.
+ virtual void
+ do_adjust_elf_header(unsigned char*, int) const
+ { }
+
private:
Target(const Target&);
Target& operator=(const Target&);
#include "target-reloc.h"
#include "target-select.h"
#include "tls.h"
+#include "freebsd.h"
namespace
{
// http://people.redhat.com/drepper/tls.pdf
// http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt
-class Target_x86_64 : public Sized_target<64, false>
+class Target_x86_64 : public Target_freebsd<64, false>
{
public:
// In the x86_64 ABI (p 68), it says "The AMD64 ABI architectures
typedef Output_data_reloc<elfcpp::SHT_RELA, true, 64, false> Reloc_section;
Target_x86_64()
- : Sized_target<64, false>(&x86_64_info),
+ : Target_freebsd<64, false>(&x86_64_info),
got_(NULL), plt_(NULL), got_plt_(NULL), rela_dyn_(NULL),
copy_relocs_(elfcpp::R_X86_64_COPY), dynbss_(NULL),
got_mod_index_offset_(-1U), tls_base_symbol_defined_(false)
// The selector for x86_64 object files.
-class Target_selector_x86_64 : public Target_selector
+class Target_selector_x86_64 : public Target_selector_freebsd
{
public:
Target_selector_x86_64()
- : Target_selector(elfcpp::EM_X86_64, 64, false, "elf64-x86-64")
+ : Target_selector_freebsd(elfcpp::EM_X86_64, 64, false, "elf64-x86-64",
+ "elf64-x86-64-freebsd")
{ }
Target*
do_instantiate_target()
{ return new Target_x86_64(); }
+
};
Target_selector_x86_64 target_selector_x86_64;
projects / deliverable / binutils-gdb.git / commitdiff
