// sparc.cc -- sparc target support for gold.
-// Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+// Copyright (C) 2008-2016 Free Software Foundation, Inc.
// Written by David S. Miller <davem@davemloft.net>.
// This file is part of gold.
Target_sparc()
: Sized_target<size, big_endian>(&sparc_info),
got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL),
- copy_relocs_(elfcpp::R_SPARC_COPY), dynbss_(NULL),
+ copy_relocs_(elfcpp::R_SPARC_COPY),
got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL),
elf_machine_(sparc_info.machine_code), elf_flags_(0),
elf_flags_set_(false)
const unsigned char* plocal_symbols,
Relocatable_relocs*);
+ // Scan the relocs for --emit-relocs.
+ void
+ emit_relocs_scan(Symbol_table* symtab,
+ Layout* layout,
+ Sized_relobj_file<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_syms,
+ Relocatable_relocs* rr);
+
// Emit relocations for a section.
void
relocate_relocs(const Relocate_info<size, big_endian>*,
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
- off_t offset_in_output_section,
- const Relocatable_relocs*,
+ typename elfcpp::Elf_types<size>::Elf_Off
+ offset_in_output_section,
unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
section_size_type view_size,
const elfcpp::Ehdr<size, big_endian>& ehdr);
void
- do_adjust_elf_header(unsigned char* view, int len) const;
+ do_adjust_elf_header(unsigned char* view, int len);
private:
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);
+ const elfcpp::Sym<size, big_endian>& lsym,
+ bool is_discarded);
inline void
global(Symbol_table* symtab, Layout* layout, Target_sparc* target,
// 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,
+ relocate(const Relocate_info<size, big_endian>*, unsigned int,
+ Target_sparc*, Output_section*, size_t, const unsigned char*,
+ const Sized_symbol<size>*, const Symbol_value<size>*,
+ unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr,
section_size_type);
private:
unsigned char *reloc_adjust_addr_;
};
- // 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*);
unsigned int shndx, Output_section* output_section,
Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc)
{
+ unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info());
this->copy_relocs_.copy_reloc(symtab, layout,
symtab->get_sized_symbol<size>(sym),
object, shndx, output_section,
- reloc, this->rela_dyn_section(layout));
+ r_type, reloc.get_r_offset(),
+ reloc.get_r_addend(),
+ this->rela_dyn_section(layout));
}
// Information about this specific target which we pass to the
Reloc_section* rela_ifunc_;
// 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
0, // small_common_section_flags
0, // large_common_section_flags
NULL, // attributes_section
- NULL // attributes_vendor
+ NULL, // attributes_vendor
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
template<>
0, // small_common_section_flags
0, // large_common_section_flags
NULL, // attributes_section
- NULL // attributes_vendor
+ NULL, // attributes_vendor
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
// We have to take care here, even when operating in little-endian
// R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10
static inline void
gdop_hix22(unsigned char* view,
- typename elfcpp::Elf_types<size>::Elf_Addr value,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
+ typename elfcpp::Elf_types<size>::Elf_Addr value)
{
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
Valtype val = elfcpp::Swap<32, true>::readval(wv);
- int32_t reloc = static_cast<int32_t>(value + addend);
+ int32_t reloc = static_cast<int32_t>(value);
val &= ~0x3fffff;
// R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00
static inline void
gdop_lox10(unsigned char* view,
- typename elfcpp::Elf_types<size>::Elf_Addr value,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
+ typename elfcpp::Elf_types<size>::Elf_Addr value)
{
typedef typename elfcpp::Swap<32, true>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
Valtype val = elfcpp::Swap<32, true>::readval(wv);
- int32_t reloc = static_cast<int32_t>(value + addend);
+ int32_t reloc = static_cast<int32_t>(value);
if (reloc < 0)
reloc = (reloc & 0x3ff) | 0x1c00;
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& gsym->can_use_relative_reloc(false))
offset = plt_index_to_offset(this->count_ + 4);
- return this->address() + offset;
+ return this->address() + offset + gsym->plt_offset();
}
// Return the PLT address to use for a local symbol. These are always
template<int size, bool big_endian>
uint64_t
Output_data_plt_sparc<size, big_endian>::address_for_local(
- const Relobj*,
- unsigned int)
+ const Relobj* object,
+ unsigned int r_sym)
{
- return this->address() + plt_index_to_offset(this->count_ + 4);
+ return (this->address()
+ + plt_index_to_offset(this->count_ + 4)
+ + object->local_plt_offset(r_sym));
}
static const unsigned int sparc_nop = 0x01000000;
Output_section* output_section,
const elfcpp::Rela<size, big_endian>& reloc,
unsigned int r_type,
- const elfcpp::Sym<size, big_endian>& lsym)
+ const elfcpp::Sym<size, big_endian>& lsym,
+ bool is_discarded)
{
+ if (is_discarded)
+ return;
+
bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
unsigned int orig_r_type = r_type;
r_type &= 0xff;
// Make a dynamic relocation if necessary.
if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
{
- if (gsym->may_need_copy_reloc())
+ if (parameters->options().output_is_executable()
+ && gsym->may_need_copy_reloc())
{
target->copy_reloc(symtab, layout, object,
data_shndx, output_section, gsym,
break;
}
- if (gsym->may_need_copy_reloc())
+ if (!parameters->options().output_is_position_independent()
+ && gsym->may_need_copy_reloc())
{
target->copy_reloc(symtab, layout, object,
data_shndx, output_section, gsym, reloc);
{
typedef Target_sparc<size, big_endian> Sparc;
typedef typename Target_sparc<size, big_endian>::Scan Scan;
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
- gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
- typename Target_sparc::Relocatable_size_for_reloc>(
+ gold::gc_process_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
symtab,
layout,
this,
const unsigned char* plocal_symbols)
{
typedef Target_sparc<size, big_endian> Sparc;
- typedef typename Target_sparc<size, big_endian>::Scan Scan;
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
if (sh_type == elfcpp::SHT_REL)
{
return;
}
- gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
+ gold::scan_relocs<size, big_endian, Sparc, Scan, Classify_reloc>(
symtab,
layout,
this,
inline bool
Target_sparc<size, big_endian>::Relocate::relocate(
const Relocate_info<size, big_endian>* relinfo,
+ unsigned int,
Target_sparc* target,
Output_section*,
size_t relnum,
- const elfcpp::Rela<size, big_endian>& rela,
- unsigned int r_type,
+ const unsigned char* preloc,
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)
{
+ const elfcpp::Rela<size, big_endian> rela(preloc);
+ unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info());
bool orig_is_ifunc = psymval->is_ifunc_symbol();
r_type &= 0xff;
return false;
}
}
+
+ if (view == NULL)
+ return true;
+
if (this->reloc_adjust_addr_ == view)
view -= 4;
{
elfcpp::Elf_Xword value;
- value = target->plt_address_for_global(gsym) + gsym->plt_offset();
+ value = target->plt_address_for_global(gsym);
symval.set_output_value(value);
unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
if (object->local_has_plt_offset(r_sym))
{
- symval.set_output_value(target->plt_address_for_local(object, r_sym)
- + object->local_plt_offset(r_sym));
+ symval.set_output_value(target->plt_address_for_local(object, r_sym));
psymval = &symval;
}
}
&& !gsym->is_preemptible()
&& !orig_is_ifunc))
{
- got_offset = psymval->value(object, 0) - target->got_address();
+ got_offset = psymval->value(object, addend) - target->got_address();
gdop_valid = true;
break;
}
case elfcpp::R_SPARC_GOTDATA_OP_LOX10:
if (gdop_valid)
{
- Reloc::gdop_lox10(view, got_offset, addend);
+ Reloc::gdop_lox10(view, got_offset);
break;
}
/* Fall through. */
case elfcpp::R_SPARC_GOTDATA_OP_HIX22:
if (gdop_valid)
{
- Reloc::gdop_hix22(view, got_offset, addend);
+ Reloc::gdop_hix22(view, got_offset);
break;
}
/* Fall through. */
{
typedef Target_sparc<size, big_endian> Sparc;
typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate;
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
gold_assert(sh_type == elfcpp::SHT_RELA);
- gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA,
- Sparc_relocate>(
+ gold::relocate_section<size, big_endian, Sparc, Sparc_relocate,
+ gold::Default_comdat_behavior, Classify_reloc>(
relinfo,
this,
prelocs,
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>
const unsigned char* plocal_symbols,
Relocatable_relocs* rr)
{
- gold_assert(sh_type == elfcpp::SHT_RELA);
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
+ typedef gold::Default_scan_relocatable_relocs<Classify_reloc>
+ Scan_relocatable_relocs;
- typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
- Relocatable_size_for_reloc> Scan_relocatable_relocs;
+ gold_assert(sh_type == elfcpp::SHT_RELA);
- gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
- Scan_relocatable_relocs>(
+ gold::scan_relocatable_relocs<size, big_endian, Scan_relocatable_relocs>(
symtab,
layout,
object,
rr);
}
+// Scan the relocs for --emit-relocs.
+
+template<int size, bool big_endian>
+void
+Target_sparc<size, big_endian>::emit_relocs_scan(
+ Symbol_table* symtab,
+ Layout* layout,
+ Sized_relobj_file<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_syms,
+ Relocatable_relocs* rr)
+{
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
+ typedef gold::Default_emit_relocs_strategy<Classify_reloc>
+ Emit_relocs_strategy;
+
+ gold_assert(sh_type == elfcpp::SHT_RELA);
+
+ gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>(
+ symtab,
+ layout,
+ object,
+ data_shndx,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ local_symbol_count,
+ plocal_syms,
+ rr);
+}
+
// Emit relocations for a section.
template<int size, bool big_endian>
const unsigned char* prelocs,
size_t reloc_count,
Output_section* output_section,
- off_t offset_in_output_section,
- const Relocatable_relocs* rr,
+ typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
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)
{
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
+
gold_assert(sh_type == elfcpp::SHT_RELA);
- gold::relocate_relocs<size, big_endian, elfcpp::SHT_RELA>(
+ gold::relocate_relocs<size, big_endian, Classify_reloc>(
relinfo,
prelocs,
reloc_count,
output_section,
offset_in_output_section,
- rr,
view,
view_address,
view_size,
void
Target_sparc<size, big_endian>::do_adjust_elf_header(
unsigned char* view,
- int len) const
+ int len)
{
elfcpp::Ehdr_write<size, big_endian> oehdr(view);
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