mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
22f0da72ea
PR 11805 * layout.h (enum Output_section_order): Define. (class Layout): Update declarations. * layout.cc (Layout::get_output_section): Add order parameter. Remove is_interp, is_dynamic_linker_section, is_last_relro, and is_first_non_relro parameters. Change all callers. (Layout::choose_output_section): Likewise. (Layout::add_output_section_data): Likewise. (Layout::make_output_section): Likewise. Set order. (Layout::default_section_order): New function. (Layout::layout_eh_frame): Call add_output_section_to_nonload. * output.cc (Output_section::Output_section): Initialize order_. Don't initialize deleted fields. (Output_segment::Output_segment): Don't initialize deleted fields. (Output_segment::add_output_section_to_load): New function replacing add_output_section. Change all callers to call this or add_output_section_to_nonload. (Output_segment::add_output_section_to_nonload): New function. (Output_segment::remove_output_section): Rewrite. (Output_segment::add_initial_output_data): Likewise. (Output_segment::has_any_data_sections): Likewise. (Output_segment::is_first_section_relro): Likewise. (Output_segment::maximum_alignment): Likewise. (Output_segment::has_dynamic_reloc): New function replacing dynamic_reloc_count. Change all callers. (Output_segment::has_dynamic_reloc_list): New function replacing dynamic_reloc_count_list. Change all callers. (Output_segment::set_section_addresses): Rewrite. (Output_segment::set_offset): Rewrite. (Output_segment::find_first_and_last_list): Remove. (Output_segment::set_tls_offsets): Rewrite. (Output_segment::first_section_load_address): Likewise. (Output_segment::output_section_count): Likewise. (Output_segment::section_with_lowest_load_address): Likewise. (Output_segment::write_section_headers): Likewise. (Output_segment::print_sections_to_map): Likewise. * output.h (class Output_data): Remove dynamic_reloc_count_ field. Add has_dynamic_reloc_ field. Make bools into bitfields. (Output_data::add_dynamic_reloc): Rewrite. (Output_data::has_dynamic_reloc): New function. (Output_data::dynamic_reloc_count): Remove. (class Output_section): Add order_ field. Remvoe is_relro_local_, is_last_relro_, is_first_non_relro_, is_interp_, is_dynamic_linker_section_ fields. Add order and set_order functions. Remove is_relro_local, set_is_relro_local, is_last_relro, set_is_last_relro, is_first_non_relro, set_is_first_non_relro functions, is_interp, set_is_interp, is_dynamic_linker_section, and set_is_dynamic_linker_section functions. (class Output_segment): Change Output_data_list from std::list to std:;vector. Add output_lists_ field. Remove output_data_ and output_bss_ fields. Update declarations.
3345 lines
100 KiB
C++
3345 lines
100 KiB
C++
// sparc.cc -- sparc target support for gold.
|
|
|
|
// Copyright 2008, 2009 Free Software Foundation, Inc.
|
|
// Written by David S. Miller <davem@davemloft.net>.
|
|
|
|
// 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 "gold.h"
|
|
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
|
|
#include "elfcpp.h"
|
|
#include "parameters.h"
|
|
#include "reloc.h"
|
|
#include "sparc.h"
|
|
#include "object.h"
|
|
#include "symtab.h"
|
|
#include "layout.h"
|
|
#include "output.h"
|
|
#include "copy-relocs.h"
|
|
#include "target.h"
|
|
#include "target-reloc.h"
|
|
#include "target-select.h"
|
|
#include "tls.h"
|
|
#include "errors.h"
|
|
#include "gc.h"
|
|
|
|
namespace
|
|
{
|
|
|
|
using namespace gold;
|
|
|
|
template<int size, bool big_endian>
|
|
class Output_data_plt_sparc;
|
|
|
|
template<int size, bool big_endian>
|
|
class Target_sparc : public Sized_target<size, big_endian>
|
|
{
|
|
public:
|
|
typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section;
|
|
|
|
Target_sparc()
|
|
: Sized_target<size, big_endian>(&sparc_info),
|
|
got_(NULL), plt_(NULL), rela_dyn_(NULL),
|
|
copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
|
|
got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL)
|
|
{
|
|
}
|
|
|
|
// Process the relocations to determine unreferenced sections for
|
|
// garbage collection.
|
|
void
|
|
gc_process_relocs(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols);
|
|
|
|
// Scan the relocations to look for symbol adjustments.
|
|
void
|
|
scan_relocs(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols);
|
|
// Finalize the sections.
|
|
void
|
|
do_finalize_sections(Layout*, const Input_objects*, Symbol_table*);
|
|
|
|
// Return the value to use for a dynamic which requires special
|
|
// treatment.
|
|
uint64_t
|
|
do_dynsym_value(const Symbol*) const;
|
|
|
|
// Relocate a section.
|
|
void
|
|
relocate_section(const Relocate_info<size, big_endian>*,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
|
|
section_size_type view_size,
|
|
const Reloc_symbol_changes*);
|
|
|
|
// Scan the relocs during a relocatable link.
|
|
void
|
|
scan_relocatable_relocs(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols,
|
|
Relocatable_relocs*);
|
|
|
|
// Relocate a section during a relocatable link.
|
|
void
|
|
relocate_for_relocatable(const Relocate_info<size, big_endian>*,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
off_t offset_in_output_section,
|
|
const Relocatable_relocs*,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
|
|
section_size_type view_size,
|
|
unsigned char* reloc_view,
|
|
section_size_type reloc_view_size);
|
|
// Return whether SYM is defined by the ABI.
|
|
bool
|
|
do_is_defined_by_abi(const Symbol* sym) const
|
|
{
|
|
// XXX Really need to support this better...
|
|
if (sym->type() == elfcpp::STT_SPARC_REGISTER)
|
|
return 1;
|
|
|
|
return strcmp(sym->name(), "___tls_get_addr") == 0;
|
|
}
|
|
|
|
// Return whether there is a GOT section.
|
|
bool
|
|
has_got_section() const
|
|
{ return this->got_ != NULL; }
|
|
|
|
// Return the size of the GOT section.
|
|
section_size_type
|
|
got_size()
|
|
{
|
|
gold_assert(this->got_ != NULL);
|
|
return this->got_->data_size();
|
|
}
|
|
|
|
private:
|
|
|
|
// The class which scans relocations.
|
|
class Scan
|
|
{
|
|
public:
|
|
Scan()
|
|
: issued_non_pic_error_(false)
|
|
{ }
|
|
|
|
inline void
|
|
local(Symbol_table* symtab, Layout* layout, Target_sparc* target,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
Output_section* output_section,
|
|
const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
|
|
const elfcpp::Sym<size, big_endian>& lsym);
|
|
|
|
inline void
|
|
global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
Output_section* output_section,
|
|
const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type,
|
|
Symbol* gsym);
|
|
|
|
inline bool
|
|
local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
|
|
Target_sparc* ,
|
|
Sized_relobj<size, big_endian>* ,
|
|
unsigned int ,
|
|
Output_section* ,
|
|
const elfcpp::Rela<size, big_endian>& ,
|
|
unsigned int ,
|
|
const elfcpp::Sym<size, big_endian>&)
|
|
{ return false; }
|
|
|
|
inline bool
|
|
global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
|
|
Target_sparc* ,
|
|
Sized_relobj<size, big_endian>* ,
|
|
unsigned int ,
|
|
Output_section* ,
|
|
const elfcpp::Rela<size,
|
|
big_endian>& ,
|
|
unsigned int , Symbol*)
|
|
{ return false; }
|
|
|
|
|
|
private:
|
|
static void
|
|
unsupported_reloc_local(Sized_relobj<size, big_endian>*,
|
|
unsigned int r_type);
|
|
|
|
static void
|
|
unsupported_reloc_global(Sized_relobj<size, big_endian>*,
|
|
unsigned int r_type, Symbol*);
|
|
|
|
static void
|
|
generate_tls_call(Symbol_table* symtab, Layout* layout,
|
|
Target_sparc* target);
|
|
|
|
void
|
|
check_non_pic(Relobj*, unsigned int r_type);
|
|
|
|
// Whether we have issued an error about a non-PIC compilation.
|
|
bool issued_non_pic_error_;
|
|
};
|
|
|
|
// The class which implements relocation.
|
|
class Relocate
|
|
{
|
|
public:
|
|
Relocate()
|
|
: ignore_gd_add_(false)
|
|
{ }
|
|
|
|
~Relocate()
|
|
{
|
|
if (this->ignore_gd_add_)
|
|
{
|
|
// FIXME: This needs to specify the location somehow.
|
|
gold_error(_("missing expected TLS relocation"));
|
|
}
|
|
}
|
|
|
|
// Do a relocation. Return false if the caller should not issue
|
|
// any warnings about this relocation.
|
|
inline bool
|
|
relocate(const Relocate_info<size, big_endian>*, Target_sparc*,
|
|
Output_section*, size_t relnum,
|
|
const elfcpp::Rela<size, big_endian>&,
|
|
unsigned int r_type, const Sized_symbol<size>*,
|
|
const Symbol_value<size>*,
|
|
unsigned char*,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr,
|
|
section_size_type);
|
|
|
|
private:
|
|
// Do a TLS relocation.
|
|
inline void
|
|
relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target,
|
|
size_t relnum, const elfcpp::Rela<size, big_endian>&,
|
|
unsigned int r_type, const Sized_symbol<size>*,
|
|
const Symbol_value<size>*,
|
|
unsigned char*,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr,
|
|
section_size_type);
|
|
|
|
// Ignore the next relocation which should be R_SPARC_TLS_GD_ADD
|
|
bool ignore_gd_add_;
|
|
};
|
|
|
|
// A class which returns the size required for a relocation type,
|
|
// used while scanning relocs during a relocatable link.
|
|
class Relocatable_size_for_reloc
|
|
{
|
|
public:
|
|
unsigned int
|
|
get_size_for_reloc(unsigned int, Relobj*);
|
|
};
|
|
|
|
// Get the GOT section, creating it if necessary.
|
|
Output_data_got<size, big_endian>*
|
|
got_section(Symbol_table*, Layout*);
|
|
|
|
// Create a PLT entry for a global symbol.
|
|
void
|
|
make_plt_entry(Symbol_table*, Layout*, Symbol*);
|
|
|
|
// Create a GOT entry for the TLS module index.
|
|
unsigned int
|
|
got_mod_index_entry(Symbol_table* symtab, Layout* layout,
|
|
Sized_relobj<size, big_endian>* object);
|
|
|
|
// Return the gsym for "__tls_get_addr". Cache if not already
|
|
// cached.
|
|
Symbol*
|
|
tls_get_addr_sym(Symbol_table* symtab)
|
|
{
|
|
if (!this->tls_get_addr_sym_)
|
|
this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL);
|
|
gold_assert(this->tls_get_addr_sym_);
|
|
return this->tls_get_addr_sym_;
|
|
}
|
|
|
|
// Get the PLT section.
|
|
const Output_data_plt_sparc<size, big_endian>*
|
|
plt_section() const
|
|
{
|
|
gold_assert(this->plt_ != NULL);
|
|
return this->plt_;
|
|
}
|
|
|
|
// Get the dynamic reloc section, creating it if necessary.
|
|
Reloc_section*
|
|
rela_dyn_section(Layout*);
|
|
|
|
// Copy a relocation against a global symbol.
|
|
void
|
|
copy_reloc(Symbol_table* symtab, Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int shndx, Output_section* output_section,
|
|
Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
|
|
{
|
|
this->copy_relocs_.copy_reloc(symtab, layout,
|
|
symtab->get_sized_symbol<size>(sym),
|
|
object, shndx, output_section,
|
|
reloc, this->rela_dyn_section(layout));
|
|
}
|
|
|
|
// Information about this specific target which we pass to the
|
|
// general Target structure.
|
|
static Target::Target_info sparc_info;
|
|
|
|
// The types of GOT entries needed for this platform.
|
|
enum Got_type
|
|
{
|
|
GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol
|
|
GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset
|
|
GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
|
|
};
|
|
|
|
// The GOT section.
|
|
Output_data_got<size, big_endian>* got_;
|
|
// The PLT section.
|
|
Output_data_plt_sparc<size, big_endian>* plt_;
|
|
// The dynamic reloc section.
|
|
Reloc_section* rela_dyn_;
|
|
// Relocs saved to avoid a COPY reloc.
|
|
Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
|
|
// Space for variables copied with a COPY reloc.
|
|
Output_data_space* dynbss_;
|
|
// Offset of the GOT entry for the TLS module index;
|
|
unsigned int got_mod_index_offset_;
|
|
// Cached pointer to __tls_get_addr symbol
|
|
Symbol* tls_get_addr_sym_;
|
|
};
|
|
|
|
template<>
|
|
Target::Target_info Target_sparc<32, true>::sparc_info =
|
|
{
|
|
32, // size
|
|
true, // is_big_endian
|
|
elfcpp::EM_SPARC, // machine_code
|
|
false, // has_make_symbol
|
|
false, // has_resolve
|
|
false, // has_code_fill
|
|
true, // is_default_stack_executable
|
|
'\0', // wrap_char
|
|
"/usr/lib/ld.so.1", // dynamic_linker
|
|
0x00010000, // default_text_segment_address
|
|
64 * 1024, // abi_pagesize (overridable by -z max-page-size)
|
|
8 * 1024, // common_pagesize (overridable by -z common-page-size)
|
|
elfcpp::SHN_UNDEF, // small_common_shndx
|
|
elfcpp::SHN_UNDEF, // large_common_shndx
|
|
0, // small_common_section_flags
|
|
0, // large_common_section_flags
|
|
NULL, // attributes_section
|
|
NULL // attributes_vendor
|
|
};
|
|
|
|
template<>
|
|
Target::Target_info Target_sparc<64, true>::sparc_info =
|
|
{
|
|
64, // size
|
|
true, // is_big_endian
|
|
elfcpp::EM_SPARCV9, // machine_code
|
|
false, // has_make_symbol
|
|
false, // has_resolve
|
|
false, // has_code_fill
|
|
true, // is_default_stack_executable
|
|
'\0', // wrap_char
|
|
"/usr/lib/sparcv9/ld.so.1", // dynamic_linker
|
|
0x100000, // default_text_segment_address
|
|
64 * 1024, // abi_pagesize (overridable by -z max-page-size)
|
|
8 * 1024, // common_pagesize (overridable by -z common-page-size)
|
|
elfcpp::SHN_UNDEF, // small_common_shndx
|
|
elfcpp::SHN_UNDEF, // large_common_shndx
|
|
0, // small_common_section_flags
|
|
0, // large_common_section_flags
|
|
NULL, // attributes_section
|
|
NULL // attributes_vendor
|
|
};
|
|
|
|
// We have to take care here, even when operating in little-endian
|
|
// mode, sparc instructions are still big endian.
|
|
template<int size, bool big_endian>
|
|
class Sparc_relocate_functions
|
|
{
|
|
private:
|
|
// Do a simple relocation with the addend in the relocation.
|
|
template<int valsize>
|
|
static inline void
|
|
rela(unsigned char* view,
|
|
unsigned int right_shift,
|
|
typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
|
|
typename elfcpp::Swap<size, big_endian>::Valtype value,
|
|
typename elfcpp::Swap<size, big_endian>::Valtype addend)
|
|
{
|
|
typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
|
|
Valtype reloc = ((value + addend) >> right_shift);
|
|
|
|
val &= ~dst_mask;
|
|
reloc &= dst_mask;
|
|
|
|
elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// Do a simple relocation using a symbol value with the addend in
|
|
// the relocation.
|
|
template<int valsize>
|
|
static inline void
|
|
rela(unsigned char* view,
|
|
unsigned int right_shift,
|
|
typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
|
|
{
|
|
typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
|
|
Valtype reloc = (psymval->value(object, addend) >> right_shift);
|
|
|
|
val &= ~dst_mask;
|
|
reloc &= dst_mask;
|
|
|
|
elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// Do a simple relocation using a symbol value with the addend in
|
|
// the relocation, unaligned.
|
|
template<int valsize>
|
|
static inline void
|
|
rela_ua(unsigned char* view,
|
|
unsigned int right_shift, elfcpp::Elf_Xword dst_mask,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Swap<size, big_endian>::Valtype addend)
|
|
{
|
|
typedef typename elfcpp::Swap_unaligned<valsize,
|
|
big_endian>::Valtype Valtype;
|
|
unsigned char* wv = view;
|
|
Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
|
|
Valtype reloc = (psymval->value(object, addend) >> right_shift);
|
|
|
|
val &= ~dst_mask;
|
|
reloc &= dst_mask;
|
|
|
|
elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// Do a simple PC relative relocation with a Symbol_value with the
|
|
// addend in the relocation.
|
|
template<int valsize>
|
|
static inline void
|
|
pcrela(unsigned char* view,
|
|
unsigned int right_shift,
|
|
typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Swap<size, big_endian>::Valtype addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
|
|
Valtype reloc = ((psymval->value(object, addend) - address)
|
|
>> right_shift);
|
|
|
|
val &= ~dst_mask;
|
|
reloc &= dst_mask;
|
|
|
|
elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
template<int valsize>
|
|
static inline void
|
|
pcrela_unaligned(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Swap<size, big_endian>::Valtype addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
typedef typename elfcpp::Swap_unaligned<valsize,
|
|
big_endian>::Valtype Valtype;
|
|
unsigned char* wv = view;
|
|
Valtype reloc = (psymval->value(object, addend) - address);
|
|
|
|
elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
|
|
}
|
|
|
|
typedef Sparc_relocate_functions<size, big_endian> This;
|
|
typedef Sparc_relocate_functions<size, true> This_insn;
|
|
|
|
public:
|
|
// R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2
|
|
static inline void
|
|
wdisp30(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 2, 0x3fffffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2
|
|
static inline void
|
|
wdisp22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 2, 0x003fffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2
|
|
static inline void
|
|
wdisp19(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 2, 0x0007ffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2
|
|
static inline void
|
|
wdisp16(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = ((psymval->value(object, addend) - address)
|
|
>> 2);
|
|
|
|
// The relocation value is split between the low 14 bits,
|
|
// and bits 20-21.
|
|
val &= ~((0x3 << 20) | 0x3fff);
|
|
reloc = (((reloc & 0xc000) << (20 - 14))
|
|
| (reloc & 0x3ffff));
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// R_SPARC_PC22: (Symbol + Addend - Address) >> 10
|
|
static inline void
|
|
pc22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff
|
|
static inline void
|
|
pc10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_HI22: (Symbol + Addend) >> 10
|
|
static inline void
|
|
hi22(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 10, 0x003fffff, value, addend);
|
|
}
|
|
|
|
// R_SPARC_HI22: (Symbol + Addend) >> 10
|
|
static inline void
|
|
hi22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10
|
|
static inline void
|
|
pcplt22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 10, 0x003fffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_LO10: (Symbol + Addend) & 0x3ff
|
|
static inline void
|
|
lo10(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x000003ff, value, addend);
|
|
}
|
|
|
|
// R_SPARC_LO10: (Symbol + Addend) & 0x3ff
|
|
static inline void
|
|
lo10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_LO10: (Symbol + Addend) & 0x3ff
|
|
static inline void
|
|
lo10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 0, 0x000003ff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2
|
|
static inline void
|
|
olo10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend2)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = psymval->value(object, addend);
|
|
|
|
val &= ~0x1fff;
|
|
reloc &= 0x3ff;
|
|
reloc += addend2;
|
|
reloc &= 0x1fff;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// R_SPARC_22: (Symbol + Addend)
|
|
static inline void
|
|
rela32_22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_13: (Symbol + Addend)
|
|
static inline void
|
|
rela32_13(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x00001fff, value, addend);
|
|
}
|
|
|
|
// R_SPARC_13: (Symbol + Addend)
|
|
static inline void
|
|
rela32_13(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_UA16: (Symbol + Addend)
|
|
static inline void
|
|
ua16(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_UA32: (Symbol + Addend)
|
|
static inline void
|
|
ua32(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_UA64: (Symbol + Addend)
|
|
static inline void
|
|
ua64(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0,
|
|
object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_DISP8: (Symbol + Addend - Address)
|
|
static inline void
|
|
disp8(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This::template pcrela_unaligned<8>(view, object, psymval,
|
|
addend, address);
|
|
}
|
|
|
|
// R_SPARC_DISP16: (Symbol + Addend - Address)
|
|
static inline void
|
|
disp16(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This::template pcrela_unaligned<16>(view, object, psymval,
|
|
addend, address);
|
|
}
|
|
|
|
// R_SPARC_DISP32: (Symbol + Addend - Address)
|
|
static inline void
|
|
disp32(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This::template pcrela_unaligned<32>(view, object, psymval,
|
|
addend, address);
|
|
}
|
|
|
|
// R_SPARC_DISP64: (Symbol + Addend - Address)
|
|
static inline void
|
|
disp64(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
elfcpp::Elf_Xword addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This::template pcrela_unaligned<64>(view, object, psymval,
|
|
addend, address);
|
|
}
|
|
|
|
// R_SPARC_H44: (Symbol + Addend) >> 22
|
|
static inline void
|
|
h44(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff
|
|
static inline void
|
|
m44(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_L44: (Symbol + Addend) & 0xfff
|
|
static inline void
|
|
l44(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_HH22: (Symbol + Addend) >> 42
|
|
static inline void
|
|
hh22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42
|
|
static inline void
|
|
pc_hh22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 42, 0x003fffff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff
|
|
static inline void
|
|
hm10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff
|
|
static inline void
|
|
pc_hm10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address)
|
|
{
|
|
This_insn::template pcrela<32>(view, 32, 0x000003ff, object,
|
|
psymval, addend, address);
|
|
}
|
|
|
|
// R_SPARC_11: (Symbol + Addend)
|
|
static inline void
|
|
rela32_11(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_10: (Symbol + Addend)
|
|
static inline void
|
|
rela32_10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_7: (Symbol + Addend)
|
|
static inline void
|
|
rela32_7(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_6: (Symbol + Addend)
|
|
static inline void
|
|
rela32_6(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_5: (Symbol + Addend)
|
|
static inline void
|
|
rela32_5(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend);
|
|
}
|
|
|
|
// R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10
|
|
static inline void
|
|
ldo_hix22(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
This_insn::hi22(view, value, addend);
|
|
}
|
|
|
|
// R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff
|
|
static inline void
|
|
ldo_lox10(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = (value + addend);
|
|
|
|
val &= ~0x1fff;
|
|
reloc &= 0x3ff;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10
|
|
static inline void
|
|
hix22(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = (value + addend);
|
|
|
|
val &= ~0x3fffff;
|
|
|
|
reloc ^= ~(Valtype)0;
|
|
reloc >>= 10;
|
|
|
|
reloc &= 0x3fffff;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10
|
|
static inline void
|
|
hix22(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = psymval->value(object, addend);
|
|
|
|
val &= ~0x3fffff;
|
|
|
|
reloc ^= ~(Valtype)0;
|
|
reloc >>= 10;
|
|
|
|
reloc &= 0x3fffff;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
|
|
// R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00
|
|
static inline void
|
|
lox10(unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = (value + addend);
|
|
|
|
val &= ~0x1fff;
|
|
reloc &= 0x3ff;
|
|
reloc |= 0x1c00;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
|
|
// R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00
|
|
static inline void
|
|
lox10(unsigned char* view,
|
|
const Sized_relobj<size, big_endian>* object,
|
|
const Symbol_value<size>* psymval,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr addend)
|
|
{
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
|
|
Valtype* wv = reinterpret_cast<Valtype*>(view);
|
|
Valtype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Valtype reloc = psymval->value(object, addend);
|
|
|
|
val &= ~0x1fff;
|
|
reloc &= 0x3ff;
|
|
reloc |= 0x1c00;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val | reloc);
|
|
}
|
|
};
|
|
|
|
// Get the GOT section, creating it if necessary.
|
|
|
|
template<int size, bool big_endian>
|
|
Output_data_got<size, big_endian>*
|
|
Target_sparc<size, big_endian>::got_section(Symbol_table* symtab,
|
|
Layout* layout)
|
|
{
|
|
if (this->got_ == NULL)
|
|
{
|
|
gold_assert(symtab != NULL && layout != NULL);
|
|
|
|
this->got_ = new Output_data_got<size, big_endian>();
|
|
|
|
layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
|
|
(elfcpp::SHF_ALLOC
|
|
| elfcpp::SHF_WRITE),
|
|
this->got_, ORDER_RELRO, true);
|
|
|
|
// Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
|
|
symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
|
|
Symbol_table::PREDEFINED,
|
|
this->got_,
|
|
0, 0, elfcpp::STT_OBJECT,
|
|
elfcpp::STB_LOCAL,
|
|
elfcpp::STV_HIDDEN, 0,
|
|
false, false);
|
|
}
|
|
|
|
return this->got_;
|
|
}
|
|
|
|
// Get the dynamic reloc section, creating it if necessary.
|
|
|
|
template<int size, bool big_endian>
|
|
typename Target_sparc<size, big_endian>::Reloc_section*
|
|
Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout)
|
|
{
|
|
if (this->rela_dyn_ == NULL)
|
|
{
|
|
gold_assert(layout != NULL);
|
|
this->rela_dyn_ = new Reloc_section(parameters->options().combreloc());
|
|
layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA,
|
|
elfcpp::SHF_ALLOC, this->rela_dyn_,
|
|
ORDER_DYNAMIC_RELOCS, false);
|
|
}
|
|
return this->rela_dyn_;
|
|
}
|
|
|
|
// A class to handle the PLT data.
|
|
|
|
template<int size, bool big_endian>
|
|
class Output_data_plt_sparc : public Output_section_data
|
|
{
|
|
public:
|
|
typedef Output_data_reloc<elfcpp::SHT_RELA, true,
|
|
size, big_endian> Reloc_section;
|
|
|
|
Output_data_plt_sparc(Layout*);
|
|
|
|
// Add an entry to the PLT.
|
|
void add_entry(Symbol* gsym);
|
|
|
|
// Return the .rela.plt section data.
|
|
const Reloc_section* rel_plt() const
|
|
{
|
|
return this->rel_;
|
|
}
|
|
|
|
protected:
|
|
void do_adjust_output_section(Output_section* os);
|
|
|
|
// Write to a map file.
|
|
void
|
|
do_print_to_mapfile(Mapfile* mapfile) const
|
|
{ mapfile->print_output_data(this, _("** PLT")); }
|
|
|
|
private:
|
|
// The size of an entry in the PLT.
|
|
static const int base_plt_entry_size = (size == 32 ? 12 : 32);
|
|
|
|
static const unsigned int plt_entries_per_block = 160;
|
|
static const unsigned int plt_insn_chunk_size = 24;
|
|
static const unsigned int plt_pointer_chunk_size = 8;
|
|
static const unsigned int plt_block_size =
|
|
(plt_entries_per_block
|
|
* (plt_insn_chunk_size + plt_pointer_chunk_size));
|
|
|
|
// Set the final size.
|
|
void
|
|
set_final_data_size()
|
|
{
|
|
unsigned int full_count = this->count_ + 4;
|
|
unsigned int extra = (size == 32 ? 4 : 0);
|
|
|
|
if (size == 32 || full_count < 32768)
|
|
this->set_data_size((full_count * base_plt_entry_size) + extra);
|
|
else
|
|
{
|
|
unsigned int ext_cnt = full_count - 32768;
|
|
|
|
this->set_data_size((32768 * base_plt_entry_size)
|
|
+ (ext_cnt
|
|
* (plt_insn_chunk_size
|
|
+ plt_pointer_chunk_size)));
|
|
}
|
|
}
|
|
|
|
// Write out the PLT data.
|
|
void
|
|
do_write(Output_file*);
|
|
|
|
// The reloc section.
|
|
Reloc_section* rel_;
|
|
// The number of PLT entries.
|
|
unsigned int count_;
|
|
};
|
|
|
|
// Define the constants as required by C++ standard.
|
|
|
|
template<int size, bool big_endian>
|
|
const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size;
|
|
|
|
template<int size, bool big_endian>
|
|
const unsigned int
|
|
Output_data_plt_sparc<size, big_endian>::plt_entries_per_block;
|
|
|
|
template<int size, bool big_endian>
|
|
const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size;
|
|
|
|
template<int size, bool big_endian>
|
|
const unsigned int
|
|
Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size;
|
|
|
|
template<int size, bool big_endian>
|
|
const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size;
|
|
|
|
// Create the PLT section. The ordinary .got section is an argument,
|
|
// since we need to refer to the start.
|
|
|
|
template<int size, bool big_endian>
|
|
Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout)
|
|
: Output_section_data(size == 32 ? 4 : 8), count_(0)
|
|
{
|
|
this->rel_ = new Reloc_section(false);
|
|
layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
|
|
elfcpp::SHF_ALLOC, this->rel_,
|
|
ORDER_DYNAMIC_PLT_RELOCS, false);
|
|
}
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os)
|
|
{
|
|
os->set_entsize(0);
|
|
}
|
|
|
|
// Add an entry to the PLT.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Output_data_plt_sparc<size, big_endian>::add_entry(Symbol* gsym)
|
|
{
|
|
gold_assert(!gsym->has_plt_offset());
|
|
|
|
unsigned int index = this->count_ + 4;
|
|
section_offset_type plt_offset;
|
|
|
|
if (size == 32 || index < 32768)
|
|
plt_offset = index * base_plt_entry_size;
|
|
else
|
|
{
|
|
unsigned int ext_index = index - 32768;
|
|
|
|
plt_offset = (32768 * base_plt_entry_size)
|
|
+ ((ext_index / plt_entries_per_block)
|
|
* plt_block_size)
|
|
+ ((ext_index % plt_entries_per_block)
|
|
* plt_insn_chunk_size);
|
|
}
|
|
|
|
gsym->set_plt_offset(plt_offset);
|
|
|
|
++this->count_;
|
|
|
|
// Every PLT entry needs a reloc.
|
|
gsym->set_needs_dynsym_entry();
|
|
this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this,
|
|
plt_offset, 0);
|
|
|
|
// Note that we don't need to save the symbol. The contents of the
|
|
// PLT are independent of which symbols are used. The symbols only
|
|
// appear in the relocations.
|
|
}
|
|
|
|
static const unsigned int sparc_nop = 0x01000000;
|
|
static const unsigned int sparc_sethi_g1 = 0x03000000;
|
|
static const unsigned int sparc_branch_always = 0x30800000;
|
|
static const unsigned int sparc_branch_always_pt = 0x30680000;
|
|
static const unsigned int sparc_mov = 0x80100000;
|
|
static const unsigned int sparc_mov_g0_o0 = 0x90100000;
|
|
static const unsigned int sparc_mov_o7_g5 = 0x8a10000f;
|
|
static const unsigned int sparc_call_plus_8 = 0x40000002;
|
|
static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000;
|
|
static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001;
|
|
static const unsigned int sparc_mov_g5_o7 = 0x9e100005;
|
|
|
|
// Write out the PLT.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of)
|
|
{
|
|
const off_t offset = this->offset();
|
|
const section_size_type oview_size =
|
|
convert_to_section_size_type(this->data_size());
|
|
unsigned char* const oview = of->get_output_view(offset, oview_size);
|
|
unsigned char* pov = oview;
|
|
|
|
memset(pov, 0, base_plt_entry_size * 4);
|
|
pov += base_plt_entry_size * 4;
|
|
|
|
unsigned int plt_offset = base_plt_entry_size * 4;
|
|
const unsigned int count = this->count_;
|
|
|
|
if (size == 64)
|
|
{
|
|
unsigned int limit;
|
|
|
|
limit = (count > 32768 ? 32768 : count);
|
|
|
|
for (unsigned int i = 0; i < limit; ++i)
|
|
{
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x00,
|
|
sparc_sethi_g1 + plt_offset);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x04,
|
|
sparc_branch_always_pt +
|
|
(((base_plt_entry_size -
|
|
(plt_offset + 4)) >> 2) &
|
|
0x7ffff));
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop);
|
|
|
|
pov += base_plt_entry_size;
|
|
plt_offset += base_plt_entry_size;
|
|
}
|
|
|
|
if (count > 32768)
|
|
{
|
|
unsigned int ext_cnt = count - 32768;
|
|
unsigned int blks = ext_cnt / plt_entries_per_block;
|
|
|
|
for (unsigned int i = 0; i < blks; ++i)
|
|
{
|
|
unsigned int data_off = (plt_entries_per_block
|
|
* plt_insn_chunk_size) - 4;
|
|
|
|
for (unsigned int j = 0; j < plt_entries_per_block; ++j)
|
|
{
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x00,
|
|
sparc_mov_o7_g5);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x04,
|
|
sparc_call_plus_8);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x08,
|
|
sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x0c,
|
|
sparc_ldx_o7_imm_g1 +
|
|
(data_off & 0x1fff));
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x10,
|
|
sparc_jmpl_o7_g1_g1);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x14,
|
|
sparc_mov_g5_o7);
|
|
|
|
elfcpp::Swap<64, big_endian>::writeval(
|
|
pov + 0x4 + data_off,
|
|
(elfcpp::Elf_Xword) (oview - (pov + 0x04)));
|
|
|
|
pov += plt_insn_chunk_size;
|
|
data_off -= 16;
|
|
}
|
|
}
|
|
|
|
unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block;
|
|
for (unsigned int i = 0; i < sub_blk_cnt; ++i)
|
|
{
|
|
unsigned int data_off = (sub_blk_cnt
|
|
* plt_insn_chunk_size) - 4;
|
|
|
|
for (unsigned int j = 0; j < plt_entries_per_block; ++j)
|
|
{
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x00,
|
|
sparc_mov_o7_g5);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x04,
|
|
sparc_call_plus_8);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x08,
|
|
sparc_nop);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x0c,
|
|
sparc_ldx_o7_imm_g1 +
|
|
(data_off & 0x1fff));
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x10,
|
|
sparc_jmpl_o7_g1_g1);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x14,
|
|
sparc_mov_g5_o7);
|
|
|
|
elfcpp::Swap<64, big_endian>::writeval(
|
|
pov + 0x4 + data_off,
|
|
(elfcpp::Elf_Xword) (oview - (pov + 0x04)));
|
|
|
|
pov += plt_insn_chunk_size;
|
|
data_off -= 16;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (unsigned int i = 0; i < count; ++i)
|
|
{
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x00,
|
|
sparc_sethi_g1 + plt_offset);
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x04,
|
|
sparc_branch_always +
|
|
(((- (plt_offset + 4)) >> 2) &
|
|
0x003fffff));
|
|
elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop);
|
|
|
|
pov += base_plt_entry_size;
|
|
plt_offset += base_plt_entry_size;
|
|
}
|
|
|
|
elfcpp::Swap<32, true>::writeval(pov, sparc_nop);
|
|
pov += 4;
|
|
}
|
|
|
|
gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
|
|
|
|
of->write_output_view(offset, oview_size, oview);
|
|
}
|
|
|
|
// Create a PLT entry for a global symbol.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Symbol* gsym)
|
|
{
|
|
if (gsym->has_plt_offset())
|
|
return;
|
|
|
|
if (this->plt_ == NULL)
|
|
{
|
|
// Create the GOT sections first.
|
|
this->got_section(symtab, layout);
|
|
|
|
// Ensure that .rela.dyn always appears before .rela.plt This is
|
|
// necessary due to how, on Sparc and some other targets, .rela.dyn
|
|
// needs to include .rela.plt in it's range.
|
|
this->rela_dyn_section(layout);
|
|
|
|
this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout);
|
|
layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
|
|
(elfcpp::SHF_ALLOC
|
|
| elfcpp::SHF_EXECINSTR
|
|
| elfcpp::SHF_WRITE),
|
|
this->plt_, ORDER_PLT, false);
|
|
|
|
// Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
|
|
symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
|
|
Symbol_table::PREDEFINED,
|
|
this->plt_,
|
|
0, 0, elfcpp::STT_OBJECT,
|
|
elfcpp::STB_LOCAL,
|
|
elfcpp::STV_HIDDEN, 0,
|
|
false, false);
|
|
}
|
|
|
|
this->plt_->add_entry(gsym);
|
|
}
|
|
|
|
// Create a GOT entry for the TLS module index.
|
|
|
|
template<int size, bool big_endian>
|
|
unsigned int
|
|
Target_sparc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object)
|
|
{
|
|
if (this->got_mod_index_offset_ == -1U)
|
|
{
|
|
gold_assert(symtab != NULL && layout != NULL && object != NULL);
|
|
Reloc_section* rela_dyn = this->rela_dyn_section(layout);
|
|
Output_data_got<size, big_endian>* got;
|
|
unsigned int got_offset;
|
|
|
|
got = this->got_section(symtab, layout);
|
|
got_offset = got->add_constant(0);
|
|
rela_dyn->add_local(object, 0,
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_DTPMOD64 :
|
|
elfcpp::R_SPARC_TLS_DTPMOD32), got,
|
|
got_offset, 0);
|
|
got->add_constant(0);
|
|
this->got_mod_index_offset_ = got_offset;
|
|
}
|
|
return this->got_mod_index_offset_;
|
|
}
|
|
|
|
// Optimize the TLS relocation type based on what we know about the
|
|
// symbol. IS_FINAL is true if the final address of this symbol is
|
|
// known at link time.
|
|
|
|
static tls::Tls_optimization
|
|
optimize_tls_reloc(bool is_final, int r_type)
|
|
{
|
|
// If we are generating a shared library, then we can't do anything
|
|
// in the linker.
|
|
if (parameters->options().shared())
|
|
return tls::TLSOPT_NONE;
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
// These are General-Dynamic which permits fully general TLS
|
|
// access. Since we know that we are generating an executable,
|
|
// we can convert this to Initial-Exec. If we also know that
|
|
// this is a local symbol, we can further switch to Local-Exec.
|
|
if (is_final)
|
|
return tls::TLSOPT_TO_LE;
|
|
return tls::TLSOPT_TO_IE;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
// This is Local-Dynamic, which refers to a local symbol in the
|
|
// dynamic TLS block. Since we know that we generating an
|
|
// executable, we can switch to Local-Exec.
|
|
return tls::TLSOPT_TO_LE;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
// Another type of Local-Dynamic relocation.
|
|
return tls::TLSOPT_TO_LE;
|
|
|
|
case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
// These are Initial-Exec relocs which get the thread offset
|
|
// from the GOT. If we know that we are linking against the
|
|
// local symbol, we can switch to Local-Exec, which links the
|
|
// thread offset into the instruction.
|
|
if (is_final)
|
|
return tls::TLSOPT_TO_LE;
|
|
return tls::TLSOPT_NONE;
|
|
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
// When we already have Local-Exec, there is nothing further we
|
|
// can do.
|
|
return tls::TLSOPT_NONE;
|
|
|
|
default:
|
|
gold_unreachable();
|
|
}
|
|
}
|
|
|
|
// Generate a PLT entry slot for a call to __tls_get_addr
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab,
|
|
Layout* layout,
|
|
Target_sparc<size, big_endian>* target)
|
|
{
|
|
Symbol* gsym = target->tls_get_addr_sym(symtab);
|
|
|
|
target->make_plt_entry(symtab, layout, gsym);
|
|
}
|
|
|
|
// Report an unsupported relocation against a local symbol.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::Scan::unsupported_reloc_local(
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int r_type)
|
|
{
|
|
gold_error(_("%s: unsupported reloc %u against local symbol"),
|
|
object->name().c_str(), r_type);
|
|
}
|
|
|
|
// We are about to emit a dynamic relocation of type R_TYPE. If the
|
|
// dynamic linker does not support it, issue an error.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type)
|
|
{
|
|
gold_assert(r_type != elfcpp::R_SPARC_NONE);
|
|
|
|
if (size == 64)
|
|
{
|
|
switch (r_type)
|
|
{
|
|
// These are the relocation types supported by glibc for sparc 64-bit.
|
|
case elfcpp::R_SPARC_RELATIVE:
|
|
case elfcpp::R_SPARC_COPY:
|
|
case elfcpp::R_SPARC_64:
|
|
case elfcpp::R_SPARC_GLOB_DAT:
|
|
case elfcpp::R_SPARC_JMP_SLOT:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD64:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF64:
|
|
case elfcpp::R_SPARC_TLS_TPOFF64:
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
case elfcpp::R_SPARC_8:
|
|
case elfcpp::R_SPARC_16:
|
|
case elfcpp::R_SPARC_DISP8:
|
|
case elfcpp::R_SPARC_DISP16:
|
|
case elfcpp::R_SPARC_DISP32:
|
|
case elfcpp::R_SPARC_WDISP30:
|
|
case elfcpp::R_SPARC_LO10:
|
|
case elfcpp::R_SPARC_HI22:
|
|
case elfcpp::R_SPARC_OLO10:
|
|
case elfcpp::R_SPARC_H44:
|
|
case elfcpp::R_SPARC_M44:
|
|
case elfcpp::R_SPARC_L44:
|
|
case elfcpp::R_SPARC_HH22:
|
|
case elfcpp::R_SPARC_HM10:
|
|
case elfcpp::R_SPARC_LM22:
|
|
case elfcpp::R_SPARC_UA16:
|
|
case elfcpp::R_SPARC_UA32:
|
|
case elfcpp::R_SPARC_UA64:
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (r_type)
|
|
{
|
|
// These are the relocation types supported by glibc for sparc 32-bit.
|
|
case elfcpp::R_SPARC_RELATIVE:
|
|
case elfcpp::R_SPARC_COPY:
|
|
case elfcpp::R_SPARC_GLOB_DAT:
|
|
case elfcpp::R_SPARC_32:
|
|
case elfcpp::R_SPARC_JMP_SLOT:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD32:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF32:
|
|
case elfcpp::R_SPARC_TLS_TPOFF32:
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
case elfcpp::R_SPARC_8:
|
|
case elfcpp::R_SPARC_16:
|
|
case elfcpp::R_SPARC_DISP8:
|
|
case elfcpp::R_SPARC_DISP16:
|
|
case elfcpp::R_SPARC_DISP32:
|
|
case elfcpp::R_SPARC_LO10:
|
|
case elfcpp::R_SPARC_WDISP30:
|
|
case elfcpp::R_SPARC_HI22:
|
|
case elfcpp::R_SPARC_UA16:
|
|
case elfcpp::R_SPARC_UA32:
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// This prevents us from issuing more than one error per reloc
|
|
// section. But we can still wind up issuing more than one
|
|
// error per object file.
|
|
if (this->issued_non_pic_error_)
|
|
return;
|
|
gold_assert(parameters->options().output_is_position_independent());
|
|
object->error(_("requires unsupported dynamic reloc; "
|
|
"recompile with -fPIC"));
|
|
this->issued_non_pic_error_ = true;
|
|
return;
|
|
}
|
|
|
|
// Scan a relocation for a local symbol.
|
|
|
|
template<int size, bool big_endian>
|
|
inline void
|
|
Target_sparc<size, big_endian>::Scan::local(
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Target_sparc<size, big_endian>* target,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
Output_section* output_section,
|
|
const elfcpp::Rela<size, big_endian>& reloc,
|
|
unsigned int r_type,
|
|
const elfcpp::Sym<size, big_endian>& lsym)
|
|
{
|
|
unsigned int orig_r_type = r_type;
|
|
|
|
r_type &= 0xff;
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_NONE:
|
|
case elfcpp::R_SPARC_REGISTER:
|
|
case elfcpp::R_SPARC_GNU_VTINHERIT:
|
|
case elfcpp::R_SPARC_GNU_VTENTRY:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_64:
|
|
case elfcpp::R_SPARC_32:
|
|
// If building a shared library (or a position-independent
|
|
// executable), we need to create a dynamic relocation for
|
|
// this location. The relocation applied at link time will
|
|
// apply the link-time value, so we flag the location with
|
|
// an R_SPARC_RELATIVE relocation so the dynamic loader can
|
|
// relocate it easily.
|
|
if (parameters->options().output_is_position_independent())
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE,
|
|
output_section, data_shndx,
|
|
reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HIX22:
|
|
case elfcpp::R_SPARC_LOX10:
|
|
case elfcpp::R_SPARC_H44:
|
|
case elfcpp::R_SPARC_M44:
|
|
case elfcpp::R_SPARC_L44:
|
|
case elfcpp::R_SPARC_HH22:
|
|
case elfcpp::R_SPARC_HM10:
|
|
case elfcpp::R_SPARC_LM22:
|
|
case elfcpp::R_SPARC_UA64:
|
|
case elfcpp::R_SPARC_UA32:
|
|
case elfcpp::R_SPARC_UA16:
|
|
case elfcpp::R_SPARC_HI22:
|
|
case elfcpp::R_SPARC_LO10:
|
|
case elfcpp::R_SPARC_OLO10:
|
|
case elfcpp::R_SPARC_16:
|
|
case elfcpp::R_SPARC_11:
|
|
case elfcpp::R_SPARC_10:
|
|
case elfcpp::R_SPARC_8:
|
|
case elfcpp::R_SPARC_7:
|
|
case elfcpp::R_SPARC_6:
|
|
case elfcpp::R_SPARC_5:
|
|
// If building a shared library (or a position-independent
|
|
// executable), we need to create a dynamic relocation for
|
|
// this location.
|
|
if (parameters->options().output_is_position_independent())
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
|
|
check_non_pic(object, r_type);
|
|
if (lsym.get_st_type() != elfcpp::STT_SECTION)
|
|
{
|
|
rela_dyn->add_local(object, r_sym, orig_r_type, output_section,
|
|
data_shndx, reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
else
|
|
{
|
|
gold_assert(lsym.get_st_value() == 0);
|
|
rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type,
|
|
output_section, data_shndx,
|
|
reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_WDISP30:
|
|
case elfcpp::R_SPARC_WPLT30:
|
|
case elfcpp::R_SPARC_WDISP22:
|
|
case elfcpp::R_SPARC_WDISP19:
|
|
case elfcpp::R_SPARC_WDISP16:
|
|
case elfcpp::R_SPARC_DISP8:
|
|
case elfcpp::R_SPARC_DISP16:
|
|
case elfcpp::R_SPARC_DISP32:
|
|
case elfcpp::R_SPARC_DISP64:
|
|
case elfcpp::R_SPARC_PC10:
|
|
case elfcpp::R_SPARC_PC22:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOTDATA_OP:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
|
|
case elfcpp::R_SPARC_GOT10:
|
|
case elfcpp::R_SPARC_GOT13:
|
|
case elfcpp::R_SPARC_GOT22:
|
|
{
|
|
// The symbol requires a GOT entry.
|
|
Output_data_got<size, big_endian>* got;
|
|
unsigned int r_sym;
|
|
|
|
got = target->got_section(symtab, layout);
|
|
r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
|
|
// If we are generating a shared object, we need to add a
|
|
// dynamic relocation for this symbol's GOT entry.
|
|
if (parameters->options().output_is_position_independent())
|
|
{
|
|
if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD))
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
unsigned int off;
|
|
|
|
off = got->add_constant(0);
|
|
object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off);
|
|
rela_dyn->add_local_relative(object, r_sym,
|
|
elfcpp::R_SPARC_RELATIVE,
|
|
got, off, 0);
|
|
}
|
|
}
|
|
else
|
|
got->add_local(object, r_sym, GOT_TYPE_STANDARD);
|
|
}
|
|
break;
|
|
|
|
// These are initial TLS relocs, which are expected when
|
|
// linking.
|
|
case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
{
|
|
bool output_is_shared = parameters->options().shared();
|
|
const tls::Tls_optimization optimized_type
|
|
= optimize_tls_reloc(!output_is_shared, r_type);
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a pair of GOT entries for the module index and
|
|
// dtv-relative offset.
|
|
Output_data_got<size, big_endian>* got
|
|
= target->got_section(symtab, layout);
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
unsigned int shndx = lsym.get_st_shndx();
|
|
bool is_ordinary;
|
|
shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary);
|
|
if (!is_ordinary)
|
|
object->error(_("local symbol %u has bad shndx %u"),
|
|
r_sym, shndx);
|
|
else
|
|
got->add_local_pair_with_rela(object, r_sym,
|
|
lsym.get_st_shndx(),
|
|
GOT_TYPE_TLS_PAIR,
|
|
target->rela_dyn_section(layout),
|
|
(size == 64
|
|
? elfcpp::R_SPARC_TLS_DTPMOD64
|
|
: elfcpp::R_SPARC_TLS_DTPMOD32),
|
|
0);
|
|
if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
|
|
generate_tls_call(symtab, layout, target);
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_local(object, r_type);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a GOT entry for the module index.
|
|
target->got_mod_index_entry(symtab, layout, object);
|
|
|
|
if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
|
|
generate_tls_call(symtab, layout, target);
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_local(object, r_type);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
layout->set_has_static_tls();
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a GOT entry for the tp-relative offset.
|
|
Output_data_got<size, big_endian>* got
|
|
= target->got_section(symtab, layout);
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
|
|
if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
unsigned int off = got->add_constant(0);
|
|
|
|
object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off);
|
|
|
|
rela_dyn->add_symbolless_local_addend(object, r_sym,
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_TPOFF64 :
|
|
elfcpp::R_SPARC_TLS_TPOFF32),
|
|
got, off, 0);
|
|
}
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_local(object, r_type);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
layout->set_has_static_tls();
|
|
if (output_is_shared)
|
|
{
|
|
// We need to create a dynamic relocation.
|
|
gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION);
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
rela_dyn->add_symbolless_local_addend(object, r_sym, r_type,
|
|
output_section, data_shndx,
|
|
reloc.get_r_offset(), 0);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// These are relocations which should only be seen by the
|
|
// dynamic linker, and should never be seen here.
|
|
case elfcpp::R_SPARC_COPY:
|
|
case elfcpp::R_SPARC_GLOB_DAT:
|
|
case elfcpp::R_SPARC_JMP_SLOT:
|
|
case elfcpp::R_SPARC_RELATIVE:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD64:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD32:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF64:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF32:
|
|
case elfcpp::R_SPARC_TLS_TPOFF64:
|
|
case elfcpp::R_SPARC_TLS_TPOFF32:
|
|
gold_error(_("%s: unexpected reloc %u in object file"),
|
|
object->name().c_str(), r_type);
|
|
break;
|
|
|
|
default:
|
|
unsupported_reloc_local(object, r_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Report an unsupported relocation against a global symbol.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::Scan::unsupported_reloc_global(
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int r_type,
|
|
Symbol* gsym)
|
|
{
|
|
gold_error(_("%s: unsupported reloc %u against global symbol %s"),
|
|
object->name().c_str(), r_type, gsym->demangled_name().c_str());
|
|
}
|
|
|
|
// Scan a relocation for a global symbol.
|
|
|
|
template<int size, bool big_endian>
|
|
inline void
|
|
Target_sparc<size, big_endian>::Scan::global(
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Target_sparc<size, big_endian>* target,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
Output_section* output_section,
|
|
const elfcpp::Rela<size, big_endian>& reloc,
|
|
unsigned int r_type,
|
|
Symbol* gsym)
|
|
{
|
|
unsigned int orig_r_type = r_type;
|
|
|
|
// A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got
|
|
// section. We check here to avoid creating a dynamic reloc against
|
|
// _GLOBAL_OFFSET_TABLE_.
|
|
if (!target->has_got_section()
|
|
&& strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0)
|
|
target->got_section(symtab, layout);
|
|
|
|
r_type &= 0xff;
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_NONE:
|
|
case elfcpp::R_SPARC_REGISTER:
|
|
case elfcpp::R_SPARC_GNU_VTINHERIT:
|
|
case elfcpp::R_SPARC_GNU_VTENTRY:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PLT64:
|
|
case elfcpp::R_SPARC_PLT32:
|
|
case elfcpp::R_SPARC_HIPLT22:
|
|
case elfcpp::R_SPARC_LOPLT10:
|
|
case elfcpp::R_SPARC_PCPLT32:
|
|
case elfcpp::R_SPARC_PCPLT22:
|
|
case elfcpp::R_SPARC_PCPLT10:
|
|
case elfcpp::R_SPARC_WPLT30:
|
|
// If the symbol is fully resolved, this is just a PC32 reloc.
|
|
// Otherwise we need a PLT entry.
|
|
if (gsym->final_value_is_known())
|
|
break;
|
|
// If building a shared library, we can also skip the PLT entry
|
|
// if the symbol is defined in the output file and is protected
|
|
// or hidden.
|
|
if (gsym->is_defined()
|
|
&& !gsym->is_from_dynobj()
|
|
&& !gsym->is_preemptible())
|
|
break;
|
|
target->make_plt_entry(symtab, layout, gsym);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_DISP8:
|
|
case elfcpp::R_SPARC_DISP16:
|
|
case elfcpp::R_SPARC_DISP32:
|
|
case elfcpp::R_SPARC_DISP64:
|
|
case elfcpp::R_SPARC_PC_HH22:
|
|
case elfcpp::R_SPARC_PC_HM10:
|
|
case elfcpp::R_SPARC_PC_LM22:
|
|
case elfcpp::R_SPARC_PC10:
|
|
case elfcpp::R_SPARC_PC22:
|
|
case elfcpp::R_SPARC_WDISP30:
|
|
case elfcpp::R_SPARC_WDISP22:
|
|
case elfcpp::R_SPARC_WDISP19:
|
|
case elfcpp::R_SPARC_WDISP16:
|
|
{
|
|
if (gsym->needs_plt_entry())
|
|
target->make_plt_entry(symtab, layout, gsym);
|
|
// Make a dynamic relocation if necessary.
|
|
int flags = Symbol::NON_PIC_REF;
|
|
if (gsym->type() == elfcpp::STT_FUNC)
|
|
flags |= Symbol::FUNCTION_CALL;
|
|
if (gsym->needs_dynamic_reloc(flags))
|
|
{
|
|
if (gsym->may_need_copy_reloc())
|
|
{
|
|
target->copy_reloc(symtab, layout, object,
|
|
data_shndx, output_section, gsym,
|
|
reloc);
|
|
}
|
|
else
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
check_non_pic(object, r_type);
|
|
rela_dyn->add_global(gsym, orig_r_type, output_section, object,
|
|
data_shndx, reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_UA64:
|
|
case elfcpp::R_SPARC_64:
|
|
case elfcpp::R_SPARC_HIX22:
|
|
case elfcpp::R_SPARC_LOX10:
|
|
case elfcpp::R_SPARC_H44:
|
|
case elfcpp::R_SPARC_M44:
|
|
case elfcpp::R_SPARC_L44:
|
|
case elfcpp::R_SPARC_HH22:
|
|
case elfcpp::R_SPARC_HM10:
|
|
case elfcpp::R_SPARC_LM22:
|
|
case elfcpp::R_SPARC_HI22:
|
|
case elfcpp::R_SPARC_LO10:
|
|
case elfcpp::R_SPARC_OLO10:
|
|
case elfcpp::R_SPARC_UA32:
|
|
case elfcpp::R_SPARC_32:
|
|
case elfcpp::R_SPARC_UA16:
|
|
case elfcpp::R_SPARC_16:
|
|
case elfcpp::R_SPARC_11:
|
|
case elfcpp::R_SPARC_10:
|
|
case elfcpp::R_SPARC_8:
|
|
case elfcpp::R_SPARC_7:
|
|
case elfcpp::R_SPARC_6:
|
|
case elfcpp::R_SPARC_5:
|
|
{
|
|
// Make a PLT entry if necessary.
|
|
if (gsym->needs_plt_entry())
|
|
{
|
|
target->make_plt_entry(symtab, layout, gsym);
|
|
// Since this is not a PC-relative relocation, we may be
|
|
// taking the address of a function. In that case we need to
|
|
// set the entry in the dynamic symbol table to the address of
|
|
// the PLT entry.
|
|
if (gsym->is_from_dynobj() && !parameters->options().shared())
|
|
gsym->set_needs_dynsym_value();
|
|
}
|
|
// Make a dynamic relocation if necessary.
|
|
if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF))
|
|
{
|
|
unsigned int r_off = reloc.get_r_offset();
|
|
|
|
// The assembler can sometimes emit unaligned relocations
|
|
// for dwarf2 cfi directives.
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_16:
|
|
if (r_off & 0x1)
|
|
orig_r_type = r_type = elfcpp::R_SPARC_UA16;
|
|
break;
|
|
case elfcpp::R_SPARC_32:
|
|
if (r_off & 0x3)
|
|
orig_r_type = r_type = elfcpp::R_SPARC_UA32;
|
|
break;
|
|
case elfcpp::R_SPARC_64:
|
|
if (r_off & 0x7)
|
|
orig_r_type = r_type = elfcpp::R_SPARC_UA64;
|
|
break;
|
|
case elfcpp::R_SPARC_UA16:
|
|
if (!(r_off & 0x1))
|
|
orig_r_type = r_type = elfcpp::R_SPARC_16;
|
|
break;
|
|
case elfcpp::R_SPARC_UA32:
|
|
if (!(r_off & 0x3))
|
|
orig_r_type = r_type = elfcpp::R_SPARC_32;
|
|
break;
|
|
case elfcpp::R_SPARC_UA64:
|
|
if (!(r_off & 0x7))
|
|
orig_r_type = r_type = elfcpp::R_SPARC_64;
|
|
break;
|
|
}
|
|
|
|
if (gsym->may_need_copy_reloc())
|
|
{
|
|
target->copy_reloc(symtab, layout, object,
|
|
data_shndx, output_section, gsym, reloc);
|
|
}
|
|
else if ((r_type == elfcpp::R_SPARC_32
|
|
|| r_type == elfcpp::R_SPARC_64)
|
|
&& gsym->can_use_relative_reloc(false))
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
|
|
output_section, object,
|
|
data_shndx, reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
else
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
|
|
check_non_pic(object, r_type);
|
|
if (gsym->is_from_dynobj()
|
|
|| gsym->is_undefined()
|
|
|| gsym->is_preemptible())
|
|
rela_dyn->add_global(gsym, orig_r_type, output_section,
|
|
object, data_shndx,
|
|
reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
else
|
|
rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
|
|
output_section,
|
|
object, data_shndx,
|
|
reloc.get_r_offset(),
|
|
reloc.get_r_addend());
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOTDATA_OP:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
|
|
case elfcpp::R_SPARC_GOT10:
|
|
case elfcpp::R_SPARC_GOT13:
|
|
case elfcpp::R_SPARC_GOT22:
|
|
{
|
|
// The symbol requires a GOT entry.
|
|
Output_data_got<size, big_endian>* got;
|
|
|
|
got = target->got_section(symtab, layout);
|
|
if (gsym->final_value_is_known())
|
|
got->add_global(gsym, GOT_TYPE_STANDARD);
|
|
else
|
|
{
|
|
// If this symbol is not fully resolved, we need to add a
|
|
// dynamic relocation for it.
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
if (gsym->is_from_dynobj()
|
|
|| gsym->is_undefined()
|
|
|| gsym->is_preemptible())
|
|
got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn,
|
|
elfcpp::R_SPARC_GLOB_DAT);
|
|
else if (!gsym->has_got_offset(GOT_TYPE_STANDARD))
|
|
{
|
|
unsigned int off = got->add_constant(0);
|
|
|
|
gsym->set_got_offset(GOT_TYPE_STANDARD, off);
|
|
rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE,
|
|
got, off, 0);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
// These are initial tls relocs, which are expected when
|
|
// linking.
|
|
case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
{
|
|
const bool is_final = gsym->final_value_is_known();
|
|
const tls::Tls_optimization optimized_type
|
|
= optimize_tls_reloc(is_final, r_type);
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a pair of GOT entries for the module index and
|
|
// dtv-relative offset.
|
|
Output_data_got<size, big_endian>* got
|
|
= target->got_section(symtab, layout);
|
|
got->add_global_pair_with_rela(gsym, GOT_TYPE_TLS_PAIR,
|
|
target->rela_dyn_section(layout),
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_DTPMOD64 :
|
|
elfcpp::R_SPARC_TLS_DTPMOD32),
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_DTPOFF64 :
|
|
elfcpp::R_SPARC_TLS_DTPOFF32));
|
|
|
|
// Emit R_SPARC_WPLT30 against "__tls_get_addr"
|
|
if (r_type == elfcpp::R_SPARC_TLS_GD_CALL)
|
|
generate_tls_call(symtab, layout, target);
|
|
}
|
|
else if (optimized_type == tls::TLSOPT_TO_IE)
|
|
{
|
|
// Create a GOT entry for the tp-relative offset.
|
|
Output_data_got<size, big_endian>* got
|
|
= target->got_section(symtab, layout);
|
|
got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
|
|
target->rela_dyn_section(layout),
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_TPOFF64 :
|
|
elfcpp::R_SPARC_TLS_TPOFF32));
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_global(object, r_type, gsym);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a GOT entry for the module index.
|
|
target->got_mod_index_entry(symtab, layout, object);
|
|
|
|
if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL)
|
|
generate_tls_call(symtab, layout, target);
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_global(object, r_type, gsym);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
layout->set_has_static_tls();
|
|
if (parameters->options().shared())
|
|
{
|
|
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
|
|
rela_dyn->add_symbolless_global_addend(gsym, orig_r_type,
|
|
output_section, object,
|
|
data_shndx, reloc.get_r_offset(),
|
|
0);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
layout->set_has_static_tls();
|
|
if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Create a GOT entry for the tp-relative offset.
|
|
Output_data_got<size, big_endian>* got
|
|
= target->got_section(symtab, layout);
|
|
got->add_global_with_rela(gsym, GOT_TYPE_TLS_OFFSET,
|
|
target->rela_dyn_section(layout),
|
|
(size == 64 ?
|
|
elfcpp::R_SPARC_TLS_TPOFF64 :
|
|
elfcpp::R_SPARC_TLS_TPOFF32));
|
|
}
|
|
else if (optimized_type != tls::TLSOPT_TO_LE)
|
|
unsupported_reloc_global(object, r_type, gsym);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
// These are relocations which should only be seen by the
|
|
// dynamic linker, and should never be seen here.
|
|
case elfcpp::R_SPARC_COPY:
|
|
case elfcpp::R_SPARC_GLOB_DAT:
|
|
case elfcpp::R_SPARC_JMP_SLOT:
|
|
case elfcpp::R_SPARC_RELATIVE:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD64:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD32:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF64:
|
|
case elfcpp::R_SPARC_TLS_DTPOFF32:
|
|
case elfcpp::R_SPARC_TLS_TPOFF64:
|
|
case elfcpp::R_SPARC_TLS_TPOFF32:
|
|
gold_error(_("%s: unexpected reloc %u in object file"),
|
|
object->name().c_str(), r_type);
|
|
break;
|
|
|
|
default:
|
|
unsupported_reloc_global(object, r_type, gsym);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Process relocations for gc.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::gc_process_relocs(
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols)
|
|
{
|
|
typedef Target_sparc<size, big_endian> Sparc;
|
|
typedef typename Target_sparc<size, big_endian>::Scan Scan;
|
|
|
|
gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
|
|
typename Target_sparc::Relocatable_size_for_reloc>(
|
|
symtab,
|
|
layout,
|
|
this,
|
|
object,
|
|
data_shndx,
|
|
prelocs,
|
|
reloc_count,
|
|
output_section,
|
|
needs_special_offset_handling,
|
|
local_symbol_count,
|
|
plocal_symbols);
|
|
}
|
|
|
|
// Scan relocations for a section.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::scan_relocs(
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols)
|
|
{
|
|
typedef Target_sparc<size, big_endian> Sparc;
|
|
typedef typename Target_sparc<size, big_endian>::Scan Scan;
|
|
|
|
if (sh_type == elfcpp::SHT_REL)
|
|
{
|
|
gold_error(_("%s: unsupported REL reloc section"),
|
|
object->name().c_str());
|
|
return;
|
|
}
|
|
|
|
gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
|
|
symtab,
|
|
layout,
|
|
this,
|
|
object,
|
|
data_shndx,
|
|
prelocs,
|
|
reloc_count,
|
|
output_section,
|
|
needs_special_offset_handling,
|
|
local_symbol_count,
|
|
plocal_symbols);
|
|
}
|
|
|
|
// Finalize the sections.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::do_finalize_sections(
|
|
Layout* layout,
|
|
const Input_objects*,
|
|
Symbol_table*)
|
|
{
|
|
// Fill in some more dynamic tags.
|
|
const Reloc_section* rel_plt = (this->plt_ == NULL
|
|
? NULL
|
|
: this->plt_->rel_plt());
|
|
layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
|
|
this->rela_dyn_, true, true);
|
|
|
|
// Emit any relocs we saved in an attempt to avoid generating COPY
|
|
// relocs.
|
|
if (this->copy_relocs_.any_saved_relocs())
|
|
this->copy_relocs_.emit(this->rela_dyn_section(layout));
|
|
}
|
|
|
|
// Perform a relocation.
|
|
|
|
template<int size, bool big_endian>
|
|
inline bool
|
|
Target_sparc<size, big_endian>::Relocate::relocate(
|
|
const Relocate_info<size, big_endian>* relinfo,
|
|
Target_sparc* target,
|
|
Output_section*,
|
|
size_t relnum,
|
|
const elfcpp::Rela<size, big_endian>& rela,
|
|
unsigned int r_type,
|
|
const Sized_symbol<size>* gsym,
|
|
const Symbol_value<size>* psymval,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address,
|
|
section_size_type view_size)
|
|
{
|
|
r_type &= 0xff;
|
|
|
|
if (this->ignore_gd_add_)
|
|
{
|
|
if (r_type != elfcpp::R_SPARC_TLS_GD_ADD)
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("missing expected TLS relocation"));
|
|
else
|
|
{
|
|
this->ignore_gd_add_ = false;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
typedef Sparc_relocate_functions<size, big_endian> Reloc;
|
|
|
|
// Pick the value to use for symbols defined in shared objects.
|
|
Symbol_value<size> symval;
|
|
if (gsym != NULL
|
|
&& gsym->use_plt_offset(r_type == elfcpp::R_SPARC_DISP8
|
|
|| r_type == elfcpp::R_SPARC_DISP16
|
|
|| r_type == elfcpp::R_SPARC_DISP32
|
|
|| r_type == elfcpp::R_SPARC_DISP64
|
|
|| r_type == elfcpp::R_SPARC_PC_HH22
|
|
|| r_type == elfcpp::R_SPARC_PC_HM10
|
|
|| r_type == elfcpp::R_SPARC_PC_LM22
|
|
|| r_type == elfcpp::R_SPARC_PC10
|
|
|| r_type == elfcpp::R_SPARC_PC22
|
|
|| r_type == elfcpp::R_SPARC_WDISP30
|
|
|| r_type == elfcpp::R_SPARC_WDISP22
|
|
|| r_type == elfcpp::R_SPARC_WDISP19
|
|
|| r_type == elfcpp::R_SPARC_WDISP16))
|
|
{
|
|
elfcpp::Elf_Xword value;
|
|
|
|
value = target->plt_section()->address() + gsym->plt_offset();
|
|
|
|
symval.set_output_value(value);
|
|
|
|
psymval = &symval;
|
|
}
|
|
|
|
const Sized_relobj<size, big_endian>* object = relinfo->object;
|
|
const elfcpp::Elf_Xword addend = rela.get_r_addend();
|
|
|
|
// Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
|
|
// pointer points to the beginning, not the end, of the table.
|
|
// So we just use the plain offset.
|
|
unsigned int got_offset = 0;
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_GOTDATA_OP:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
|
|
case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
|
|
case elfcpp::R_SPARC_GOT10:
|
|
case elfcpp::R_SPARC_GOT13:
|
|
case elfcpp::R_SPARC_GOT22:
|
|
if (gsym != NULL)
|
|
{
|
|
gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
|
|
got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
|
|
}
|
|
else
|
|
{
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
|
|
gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
|
|
got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_NONE:
|
|
case elfcpp::R_SPARC_REGISTER:
|
|
case elfcpp::R_SPARC_GNU_VTINHERIT:
|
|
case elfcpp::R_SPARC_GNU_VTENTRY:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_8:
|
|
Relocate_functions<size, big_endian>::rela8(view, object,
|
|
psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_16:
|
|
if (rela.get_r_offset() & 0x1)
|
|
{
|
|
// The assembler can sometimes emit unaligned relocations
|
|
// for dwarf2 cfi directives.
|
|
Reloc::ua16(view, object, psymval, addend);
|
|
}
|
|
else
|
|
Relocate_functions<size, big_endian>::rela16(view, object,
|
|
psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_32:
|
|
if (!parameters->options().output_is_position_independent())
|
|
{
|
|
if (rela.get_r_offset() & 0x3)
|
|
{
|
|
// The assembler can sometimes emit unaligned relocations
|
|
// for dwarf2 cfi directives.
|
|
Reloc::ua32(view, object, psymval, addend);
|
|
}
|
|
else
|
|
Relocate_functions<size, big_endian>::rela32(view, object,
|
|
psymval, addend);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_DISP8:
|
|
Reloc::disp8(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_DISP16:
|
|
Reloc::disp16(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_DISP32:
|
|
Reloc::disp32(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_DISP64:
|
|
Reloc::disp64(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_WDISP30:
|
|
case elfcpp::R_SPARC_WPLT30:
|
|
Reloc::wdisp30(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_WDISP22:
|
|
Reloc::wdisp22(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_WDISP19:
|
|
Reloc::wdisp19(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_WDISP16:
|
|
Reloc::wdisp16(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HI22:
|
|
Reloc::hi22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_22:
|
|
Reloc::rela32_22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_13:
|
|
Reloc::rela32_13(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_LO10:
|
|
Reloc::lo10(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOT10:
|
|
Reloc::lo10(view, got_offset, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOTDATA_OP:
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
|
|
case elfcpp::R_SPARC_GOT13:
|
|
Reloc::rela32_13(view, got_offset, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
|
|
case elfcpp::R_SPARC_GOT22:
|
|
Reloc::hi22(view, got_offset, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PC10:
|
|
Reloc::pc10(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PC22:
|
|
Reloc::pc22(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_DTPOFF32:
|
|
case elfcpp::R_SPARC_UA32:
|
|
Reloc::ua32(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PLT64:
|
|
Relocate_functions<size, big_endian>::rela64(view, object,
|
|
psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PLT32:
|
|
Relocate_functions<size, big_endian>::rela32(view, object,
|
|
psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HIPLT22:
|
|
Reloc::hi22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_LOPLT10:
|
|
Reloc::lo10(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PCPLT32:
|
|
Reloc::disp32(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PCPLT22:
|
|
Reloc::pcplt22(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PCPLT10:
|
|
Reloc::lo10(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_64:
|
|
if (!parameters->options().output_is_position_independent())
|
|
{
|
|
if (rela.get_r_offset() & 0x7)
|
|
{
|
|
// The assembler can sometimes emit unaligned relocations
|
|
// for dwarf2 cfi directives.
|
|
Reloc::ua64(view, object, psymval, addend);
|
|
}
|
|
else
|
|
Relocate_functions<size, big_endian>::rela64(view, object,
|
|
psymval, addend);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_OLO10:
|
|
{
|
|
unsigned int addend2 = rela.get_r_info() & 0xffffffff;
|
|
addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000;
|
|
Reloc::olo10(view, object, psymval, addend, addend2);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HH22:
|
|
Reloc::hh22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PC_HH22:
|
|
Reloc::pc_hh22(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HM10:
|
|
Reloc::hm10(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PC_HM10:
|
|
Reloc::pc_hm10(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_LM22:
|
|
Reloc::hi22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_PC_LM22:
|
|
Reloc::pcplt22(view, object, psymval, addend, address);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_11:
|
|
Reloc::rela32_11(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_10:
|
|
Reloc::rela32_10(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_7:
|
|
Reloc::rela32_7(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_6:
|
|
Reloc::rela32_6(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_5:
|
|
Reloc::rela32_5(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_HIX22:
|
|
Reloc::hix22(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_LOX10:
|
|
Reloc::lox10(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_H44:
|
|
Reloc::h44(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_M44:
|
|
Reloc::m44(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_L44:
|
|
Reloc::l44(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_DTPOFF64:
|
|
case elfcpp::R_SPARC_UA64:
|
|
Reloc::ua64(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_UA16:
|
|
Reloc::ua16(view, object, psymval, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_HI22:
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22:
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
case elfcpp::R_SPARC_TLS_IE_HI22:
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
this->relocate_tls(relinfo, target, relnum, rela,
|
|
r_type, gsym, psymval, view,
|
|
address, view_size);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_COPY:
|
|
case elfcpp::R_SPARC_GLOB_DAT:
|
|
case elfcpp::R_SPARC_JMP_SLOT:
|
|
case elfcpp::R_SPARC_RELATIVE:
|
|
// These are outstanding tls relocs, which are unexpected when
|
|
// linking.
|
|
case elfcpp::R_SPARC_TLS_DTPMOD64:
|
|
case elfcpp::R_SPARC_TLS_DTPMOD32:
|
|
case elfcpp::R_SPARC_TLS_TPOFF64:
|
|
case elfcpp::R_SPARC_TLS_TPOFF32:
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("unexpected reloc %u in object file"),
|
|
r_type);
|
|
break;
|
|
|
|
default:
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("unsupported reloc %u"),
|
|
r_type);
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Perform a TLS relocation.
|
|
|
|
template<int size, bool big_endian>
|
|
inline void
|
|
Target_sparc<size, big_endian>::Relocate::relocate_tls(
|
|
const Relocate_info<size, big_endian>* relinfo,
|
|
Target_sparc<size, big_endian>* target,
|
|
size_t relnum,
|
|
const elfcpp::Rela<size, big_endian>& rela,
|
|
unsigned int r_type,
|
|
const Sized_symbol<size>* gsym,
|
|
const Symbol_value<size>* psymval,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address,
|
|
section_size_type)
|
|
{
|
|
Output_segment* tls_segment = relinfo->layout->tls_segment();
|
|
typedef Sparc_relocate_functions<size, big_endian> Reloc;
|
|
const Sized_relobj<size, big_endian>* object = relinfo->object;
|
|
typedef typename elfcpp::Swap<32, true>::Valtype Insntype;
|
|
|
|
const elfcpp::Elf_Xword addend = rela.get_r_addend();
|
|
typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0);
|
|
|
|
const bool is_final =
|
|
(gsym == NULL
|
|
? !parameters->options().output_is_position_independent()
|
|
: gsym->final_value_is_known());
|
|
const tls::Tls_optimization optimized_type
|
|
= optimize_tls_reloc(is_final, r_type);
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22:
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
Insntype* wv = reinterpret_cast<Insntype*>(view);
|
|
Insntype val;
|
|
|
|
value -= tls_segment->memsz();
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22:
|
|
// TLS_GD_HI22 --> TLS_LE_HIX22
|
|
Reloc::hix22(view, value, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
// TLS_GD_LO10 --> TLS_LE_LOX10
|
|
Reloc::lox10(view, value, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
// add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3
|
|
val = elfcpp::Swap<32, true>::readval(wv);
|
|
val = (val & ~0x7c000) | 0x1c000;
|
|
elfcpp::Swap<32, true>::writeval(wv, val);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
// call __tls_get_addr --> nop
|
|
elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE
|
|
? GOT_TYPE_TLS_OFFSET
|
|
: GOT_TYPE_TLS_PAIR);
|
|
if (gsym != NULL)
|
|
{
|
|
gold_assert(gsym->has_got_offset(got_type));
|
|
value = gsym->got_offset(got_type);
|
|
}
|
|
else
|
|
{
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
|
|
gold_assert(object->local_has_got_offset(r_sym, got_type));
|
|
value = object->local_got_offset(r_sym, got_type);
|
|
}
|
|
if (optimized_type == tls::TLSOPT_TO_IE)
|
|
{
|
|
Insntype* wv = reinterpret_cast<Insntype*>(view);
|
|
Insntype val;
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22:
|
|
// TLS_GD_HI22 --> TLS_IE_HI22
|
|
Reloc::hi22(view, value, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
// TLS_GD_LO10 --> TLS_IE_LO10
|
|
Reloc::lo10(view, value, addend);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
// add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3
|
|
val = elfcpp::Swap<32, true>::readval(wv);
|
|
|
|
if (size == 64)
|
|
val |= 0xc0580000;
|
|
else
|
|
val |= 0xc0000000;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
// The compiler can put the TLS_GD_ADD instruction
|
|
// into the delay slot of the call. If so, we need
|
|
// to transpose the two instructions so that the
|
|
// the new sequence works properly.
|
|
//
|
|
// The test we use is if the instruction in the
|
|
// delay slot is an add with destination register
|
|
// equal to %o0
|
|
val = elfcpp::Swap<32, true>::readval(wv + 1);
|
|
if ((val & 0x81f80000) == 0x80000000
|
|
&& ((val >> 25) & 0x1f) == 0x8)
|
|
{
|
|
if (size == 64)
|
|
val |= 0xc0580000;
|
|
else
|
|
val |= 0xc0000000;
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val);
|
|
|
|
wv += 1;
|
|
this->ignore_gd_add_ = true;
|
|
}
|
|
|
|
// call __tls_get_addr --> add %g7, %o0, %o0
|
|
elfcpp::Swap<32, true>::writeval(wv, 0x9001c008);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
else if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_GD_HI22:
|
|
Reloc::hi22(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_GD_LO10:
|
|
Reloc::lo10(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_GD_ADD:
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_GD_CALL:
|
|
{
|
|
Symbol_value<size> symval;
|
|
elfcpp::Elf_Xword value;
|
|
Symbol* tsym;
|
|
|
|
tsym = target->tls_get_addr_sym_;
|
|
gold_assert(tsym);
|
|
value = (target->plt_section()->address() +
|
|
tsym->plt_offset());
|
|
symval.set_output_value(value);
|
|
Reloc::wdisp30(view, object, &symval, addend, address);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("unsupported reloc %u"),
|
|
r_type);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22:
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
Insntype* wv = reinterpret_cast<Insntype*>(view);
|
|
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22:
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
elfcpp::Swap<32, true>::writeval(wv, sparc_nop);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
else if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Relocate the field with the offset of the GOT entry for
|
|
// the module index.
|
|
unsigned int got_offset;
|
|
|
|
got_offset = target->got_mod_index_entry(NULL, NULL, NULL);
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_LDM_HI22:
|
|
Reloc::hi22(view, got_offset, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_LDM_LO10:
|
|
Reloc::lo10(view, got_offset, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_LDM_ADD:
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_LDM_CALL:
|
|
{
|
|
Symbol_value<size> symval;
|
|
elfcpp::Elf_Xword value;
|
|
Symbol* tsym;
|
|
|
|
tsym = target->tls_get_addr_sym_;
|
|
gold_assert(tsym);
|
|
value = (target->plt_section()->address() +
|
|
tsym->plt_offset());
|
|
symval.set_output_value(value);
|
|
Reloc::wdisp30(view, object, &symval, addend, address);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("unsupported reloc %u"),
|
|
r_type);
|
|
break;
|
|
|
|
// These relocs can appear in debugging sections, in which case
|
|
// we won't see the TLS_LDM relocs. The local_dynamic_type
|
|
// field tells us this.
|
|
case elfcpp::R_SPARC_TLS_LDO_HIX22:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
value -= tls_segment->memsz();
|
|
Reloc::hix22(view, value, addend);
|
|
}
|
|
else
|
|
Reloc::ldo_hix22(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_LDO_LOX10:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
value -= tls_segment->memsz();
|
|
Reloc::lox10(view, value, addend);
|
|
}
|
|
else
|
|
Reloc::ldo_lox10(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_LDO_ADD:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
Insntype* wv = reinterpret_cast<Insntype*>(view);
|
|
Insntype val;
|
|
|
|
// add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3
|
|
val = elfcpp::Swap<32, true>::readval(wv);
|
|
val = (val & ~0x7c000) | 0x1c000;
|
|
elfcpp::Swap<32, true>::writeval(wv, val);
|
|
}
|
|
break;
|
|
|
|
// When optimizing IE --> LE, the only relocation that is handled
|
|
// differently is R_SPARC_TLS_IE_LD, it is rewritten from
|
|
// 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is
|
|
// rs2 and rd are the same.
|
|
case elfcpp::R_SPARC_TLS_IE_LD:
|
|
case elfcpp::R_SPARC_TLS_IE_LDX:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
Insntype* wv = reinterpret_cast<Insntype*>(view);
|
|
Insntype val = elfcpp::Swap<32, true>::readval(wv);
|
|
Insntype rs2 = val & 0x1f;
|
|
Insntype rd = (val >> 25) & 0x1f;
|
|
|
|
if (rs2 == rd)
|
|
val = sparc_nop;
|
|
else
|
|
val = sparc_mov | (val & 0x3e00001f);
|
|
|
|
elfcpp::Swap<32, true>::writeval(wv, val);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_IE_HI22:
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
if (optimized_type == tls::TLSOPT_TO_LE)
|
|
{
|
|
value -= tls_segment->memsz();
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_IE_HI22:
|
|
// IE_HI22 --> LE_HIX22
|
|
Reloc::hix22(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
// IE_LO10 --> LE_LOX10
|
|
Reloc::lox10(view, value, addend);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
else if (optimized_type == tls::TLSOPT_NONE)
|
|
{
|
|
// Relocate the field with the offset of the GOT entry for
|
|
// the tp-relative offset of the symbol.
|
|
if (gsym != NULL)
|
|
{
|
|
gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET));
|
|
value = gsym->got_offset(GOT_TYPE_TLS_OFFSET);
|
|
}
|
|
else
|
|
{
|
|
unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
|
|
gold_assert(object->local_has_got_offset(r_sym,
|
|
GOT_TYPE_TLS_OFFSET));
|
|
value = object->local_got_offset(r_sym,
|
|
GOT_TYPE_TLS_OFFSET);
|
|
}
|
|
switch (r_type)
|
|
{
|
|
case elfcpp::R_SPARC_TLS_IE_HI22:
|
|
Reloc::hi22(view, value, addend);
|
|
break;
|
|
case elfcpp::R_SPARC_TLS_IE_LO10:
|
|
Reloc::lo10(view, value, addend);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
|
|
_("unsupported reloc %u"),
|
|
r_type);
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_IE_ADD:
|
|
// This seems to be mainly so that we can find the addition
|
|
// instruction if there is one. There doesn't seem to be any
|
|
// actual relocation to apply.
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LE_HIX22:
|
|
// If we're creating a shared library, a dynamic relocation will
|
|
// have been created for this location, so do not apply it now.
|
|
if (!parameters->options().shared())
|
|
{
|
|
value -= tls_segment->memsz();
|
|
Reloc::hix22(view, value, addend);
|
|
}
|
|
break;
|
|
|
|
case elfcpp::R_SPARC_TLS_LE_LOX10:
|
|
// If we're creating a shared library, a dynamic relocation will
|
|
// have been created for this location, so do not apply it now.
|
|
if (!parameters->options().shared())
|
|
{
|
|
value -= tls_segment->memsz();
|
|
Reloc::lox10(view, value, addend);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Relocate section data.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::relocate_section(
|
|
const Relocate_info<size, big_endian>* relinfo,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address,
|
|
section_size_type view_size,
|
|
const Reloc_symbol_changes* reloc_symbol_changes)
|
|
{
|
|
typedef Target_sparc<size, big_endian> Sparc;
|
|
typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
|
|
|
|
gold_assert(sh_type == elfcpp::SHT_RELA);
|
|
|
|
gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
|
|
Sparc_relocate>(
|
|
relinfo,
|
|
this,
|
|
prelocs,
|
|
reloc_count,
|
|
output_section,
|
|
needs_special_offset_handling,
|
|
view,
|
|
address,
|
|
view_size,
|
|
reloc_symbol_changes);
|
|
}
|
|
|
|
// Return the size of a relocation while scanning during a relocatable
|
|
// link.
|
|
|
|
template<int size, bool big_endian>
|
|
unsigned int
|
|
Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
|
|
unsigned int,
|
|
Relobj*)
|
|
{
|
|
// We are always SHT_RELA, so we should never get here.
|
|
gold_unreachable();
|
|
return 0;
|
|
}
|
|
|
|
// Scan the relocs during a relocatable link.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::scan_relocatable_relocs(
|
|
Symbol_table* symtab,
|
|
Layout* layout,
|
|
Sized_relobj<size, big_endian>* object,
|
|
unsigned int data_shndx,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
bool needs_special_offset_handling,
|
|
size_t local_symbol_count,
|
|
const unsigned char* plocal_symbols,
|
|
Relocatable_relocs* rr)
|
|
{
|
|
gold_assert(sh_type == elfcpp::SHT_RELA);
|
|
|
|
typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
|
|
Relocatable_size_for_reloc> Scan_relocatable_relocs;
|
|
|
|
gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
|
|
Scan_relocatable_relocs>(
|
|
symtab,
|
|
layout,
|
|
object,
|
|
data_shndx,
|
|
prelocs,
|
|
reloc_count,
|
|
output_section,
|
|
needs_special_offset_handling,
|
|
local_symbol_count,
|
|
plocal_symbols,
|
|
rr);
|
|
}
|
|
|
|
// Relocate a section during a relocatable link.
|
|
|
|
template<int size, bool big_endian>
|
|
void
|
|
Target_sparc<size, big_endian>::relocate_for_relocatable(
|
|
const Relocate_info<size, big_endian>* relinfo,
|
|
unsigned int sh_type,
|
|
const unsigned char* prelocs,
|
|
size_t reloc_count,
|
|
Output_section* output_section,
|
|
off_t offset_in_output_section,
|
|
const Relocatable_relocs* rr,
|
|
unsigned char* view,
|
|
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
|
|
section_size_type view_size,
|
|
unsigned char* reloc_view,
|
|
section_size_type reloc_view_size)
|
|
{
|
|
gold_assert(sh_type == elfcpp::SHT_RELA);
|
|
|
|
gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
|
|
relinfo,
|
|
prelocs,
|
|
reloc_count,
|
|
output_section,
|
|
offset_in_output_section,
|
|
rr,
|
|
view,
|
|
view_address,
|
|
view_size,
|
|
reloc_view,
|
|
reloc_view_size);
|
|
}
|
|
|
|
// Return the value to use for a dynamic which requires special
|
|
// treatment. This is how we support equality comparisons of function
|
|
// pointers across shared library boundaries, as described in the
|
|
// processor specific ABI supplement.
|
|
|
|
template<int size, bool big_endian>
|
|
uint64_t
|
|
Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
|
|
{
|
|
gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
|
|
return this->plt_section()->address() + gsym->plt_offset();
|
|
}
|
|
|
|
// The selector for sparc object files.
|
|
|
|
template<int size, bool big_endian>
|
|
class Target_selector_sparc : public Target_selector
|
|
{
|
|
public:
|
|
Target_selector_sparc()
|
|
: Target_selector(elfcpp::EM_NONE, size, big_endian,
|
|
(size == 64 ? "elf64-sparc" : "elf32-sparc"))
|
|
{ }
|
|
|
|
Target* do_recognize(int machine, int, int)
|
|
{
|
|
switch (size)
|
|
{
|
|
case 64:
|
|
if (machine != elfcpp::EM_SPARCV9)
|
|
return NULL;
|
|
break;
|
|
|
|
case 32:
|
|
if (machine != elfcpp::EM_SPARC
|
|
&& machine != elfcpp::EM_SPARC32PLUS)
|
|
return NULL;
|
|
break;
|
|
|
|
default:
|
|
return NULL;
|
|
}
|
|
|
|
return this->instantiate_target();
|
|
}
|
|
|
|
Target* do_instantiate_target()
|
|
{ return new Target_sparc<size, big_endian>(); }
|
|
};
|
|
|
|
Target_selector_sparc<32, true> target_selector_sparc32;
|
|
Target_selector_sparc<64, true> target_selector_sparc64;
|
|
|
|
} // End anonymous namespace.
|