// aarch64.cc -- aarch64 target support for gold.
// Copyright (C) 2014 Free Software Foundation, Inc.
-// Written by Jing Yu <jingyu@google.com>.
+// Written by Jing Yu <jingyu@google.com> and Han Shen <shenhan@google.com>.
// This file is part of gold.
#include "nacl.h"
#include "gc.h"
#include "icf.h"
+#include "aarch64-reloc-property.h"
// The first three .got.plt entries are reserved.
const int32_t AARCH64_GOTPLT_RESERVE_COUNT = 3;
template<int size, bool big_endian>
class Target_aarch64;
+template<int size, bool big_endian>
+class AArch64_relocate_functions;
+
// Output_data_got_aarch64 class.
template<int size, bool big_endian>
public:
typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype;
Output_data_got_aarch64(Symbol_table* symtab, Layout* layout)
- : Output_data_got<size, big_endian>(), layout_(layout)
+ : Output_data_got<size, big_endian>(),
+ symbol_table_(symtab), layout_(layout)
{ }
protected:
}
private:
+ // Symbol table of the output object.
+ Symbol_table* symbol_table_;
// A pointer to the Layout class, so that we can find the .dynamic
// section when we write out the GOT section.
Layout* layout_;
};
+AArch64_reloc_property_table* aarch64_reloc_property_table = NULL;
+
// The aarch64 target class.
// See the ABI at
// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0056b/IHI0056B_aaelf64.pdf
unsigned char* reloc_view,
section_size_type reloc_view_size);
+ // Return the PLT section.
+ uint64_t
+ do_plt_address_for_global(const Symbol* gsym) const
+ { return this->plt_section()->address_for_global(gsym); }
+
+ uint64_t
+ do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const
+ { return this->plt_section()->address_for_local(relobj, symndx); }
+
// Return the number of entries in the PLT.
unsigned int
plt_entry_count() const;
unsigned int
plt_entry_size() const;
+ protected:
+ void
+ do_select_as_default_target()
+ {
+ gold_assert(aarch64_reloc_property_table == NULL);
+ aarch64_reloc_property_table = new AArch64_reloc_property_table();
+ }
+
+ virtual Output_data_plt_aarch64<size, big_endian>*
+ do_make_data_plt(Layout* layout, Output_data_space* got_plt)
+ {
+ return new Output_data_plt_aarch64_standard<size, big_endian>(layout,
+ got_plt);
+ }
+
+ Output_data_plt_aarch64<size, big_endian>*
+ make_data_plt(Layout* layout, Output_data_space* got_plt)
+ {
+ return this->do_make_data_plt(layout, got_plt);
+ }
+
private:
// The class which scans relocations.
class Scan
: issued_non_pic_error_(false)
{ }
- static inline int
- get_reference_flags(unsigned int r_type);
-
inline void
local(Symbol_table* symtab, Layout* layout, Target_aarch64* target,
Sized_relobj_file<size, big_endian>* object,
inline bool
local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
- Target_aarch64<size, big_endian>* ,
- Sized_relobj_file<size, big_endian>* ,
- unsigned int ,
- Output_section* ,
- const elfcpp::Rela<size, big_endian>& ,
- unsigned int r_type,
- const elfcpp::Sym<size, big_endian>&);
+ Target_aarch64<size, big_endian>* ,
+ Sized_relobj_file<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rela<size, big_endian>& ,
+ unsigned int r_type,
+ const elfcpp::Sym<size, big_endian>&);
inline bool
global_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
- Target_aarch64<size, big_endian>* ,
- Sized_relobj_file<size, big_endian>* ,
- unsigned int ,
- Output_section* ,
- const elfcpp::Rela<size, big_endian>& ,
- unsigned int r_type,
- Symbol* gsym);
+ Target_aarch64<size, big_endian>* ,
+ Sized_relobj_file<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rela<size, big_endian>& ,
+ unsigned int r_type,
+ Symbol* gsym);
private:
static void
template<int size, bool big_endian>
Output_data_got_aarch64<size, big_endian>*
Target_aarch64<size, big_endian>::got_section(Symbol_table* symtab,
- Layout* layout)
+ Layout* layout)
{
if (this->got_ == NULL)
{
// Generate .got section.
this->got_ = new Output_data_got_aarch64<size, big_endian>(symtab,
- layout);
+ layout);
layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
- (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
- this->got_, got_order, true);
+ (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
+ this->got_, got_order, true);
// The first word of GOT is reserved for the address of .dynamic.
// We put 0 here now. The value will be replaced later in
// Output_data_got_aarch64::do_write.
// _GLOBAL_OFFSET_TABLE_ value points to the start of the .got section,
// even if there is a .got.plt section.
this->global_offset_table_ =
- 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);
+ 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);
// Generate .got.plt section.
this->got_plt_ = new Output_data_space(size / 8, "** GOT PLT");
layout->add_output_section_data(".got.plt", elfcpp::SHT_PROGBITS,
- (elfcpp::SHF_ALLOC
- | elfcpp::SHF_WRITE),
- this->got_plt_, got_plt_order,
- is_got_plt_relro);
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_WRITE),
+ this->got_plt_, got_plt_order,
+ is_got_plt_relro);
// The first three entries are reserved.
- this->got_plt_->set_current_data_size
- (AARCH64_GOTPLT_RESERVE_COUNT * (size / 8));
+ this->got_plt_->set_current_data_size(
+ AARCH64_GOTPLT_RESERVE_COUNT * (size / 8));
if (!is_got_plt_relro)
- {
- // Those bytes can go into the relro segment.
- layout->increase_relro
- (AARCH64_GOTPLT_RESERVE_COUNT * (size / 8));
- }
+ {
+ // Those bytes can go into the relro segment.
+ layout->increase_relro(
+ AARCH64_GOTPLT_RESERVE_COUNT * (size / 8));
+ }
}
return this->got_;
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
Output_data_plt_aarch64(Layout* layout,
- uint64_t addralign,
- Output_data_space* got_plt)
+ uint64_t addralign,
+ Output_data_space* got_plt)
: Output_section_data(addralign),
got_plt_(got_plt),
count_(0)
rela_plt()
{ return this->rel_; }
+ // Return whether we created a section for IRELATIVE relocations.
+ bool
+ has_irelative_section() const
+ { return this->irelative_rel_ != NULL; }
+
// Return the number of PLT entries.
unsigned int
entry_count() const
get_plt_entry_size() const
{ return this->do_get_plt_entry_size(); }
+ // Return the PLT address to use for a global symbol.
+ uint64_t
+ address_for_global(const Symbol*);
+
+ // Return the PLT address to use for a local symbol.
+ uint64_t
+ address_for_local(const Relobj*, unsigned int symndx);
+
protected:
// Fill in the first PLT entry.
void
// The reloc section.
Reloc_section* rel_;
+ // The IRELATIVE relocs, if necessary. These must follow the
+ // regular PLT relocations.
+ Reloc_section* irelative_rel_;
// The .got section.
Output_data_got_aarch64<size, big_endian>* got_;
// The .got.plt section.
Output_data_plt_aarch64<size, big_endian>::add_entry(Symbol* gsym)
{
gold_assert(!gsym->has_plt_offset());
- //TODO
+
+ gsym->set_plt_offset((this->count_) * this->get_plt_entry_size()
+ + this->first_plt_entry_offset());
+
+ ++this->count_;
+
+ section_offset_type got_offset = this->got_plt_->current_data_size();
+
+ // Every PLT entry needs a GOT entry which points back to the PLT
+ // entry (this will be changed by the dynamic linker, normally
+ // lazily when the function is called).
+ this->got_plt_->set_current_data_size(got_offset + size / 8);
+
+ // Every PLT entry needs a reloc.
+ gsym->set_needs_dynsym_entry();
+ this->rel_->add_global(gsym, elfcpp::R_AARCH64_JUMP_SLOT,
+ this->got_plt_, got_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.
+}
+
+// Return the PLT address to use for a global symbol.
+
+template<int size, bool big_endian>
+uint64_t
+Output_data_plt_aarch64<size, big_endian>::address_for_global(
+ const Symbol* gsym)
+{
+ uint64_t offset = 0;
+ if (gsym->type() == elfcpp::STT_GNU_IFUNC
+ && gsym->can_use_relative_reloc(false))
+ offset = (this->first_plt_entry_offset() +
+ this->count_ * this->get_plt_entry_size());
+ return this->address() + offset + gsym->plt_offset();
+}
+
+// Return the PLT address to use for a local symbol. These are always
+// IRELATIVE relocs.
+
+template<int size, bool big_endian>
+uint64_t
+Output_data_plt_aarch64<size, big_endian>::address_for_local(
+ const Relobj* object,
+ unsigned int r_sym)
+{
+ return (this->address()
+ + this->first_plt_entry_offset()
+ + this->count_ * this->get_plt_entry_size()
+ + object->local_plt_offset(r_sym));
}
// Set the final size.
+
template<int size, bool big_endian>
void
Output_data_plt_aarch64<size, big_endian>::set_final_data_size()
{
this->set_data_size(this->first_plt_entry_offset()
- + this->count * this->get_plt_entry_size());
+ + this->count_ * this->get_plt_entry_size());
}
template<int size, bool big_endian>
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
Output_data_plt_aarch64_standard(Layout* layout, Output_data_space* got_plt)
: Output_data_plt_aarch64<size, big_endian>(layout,
- size == 32 ? 4 : 8,
- got_plt)
+ size == 32 ? 4 : 8,
+ got_plt)
{ }
protected:
virtual void
do_fill_first_plt_entry(unsigned char* pov,
- Address got_address,
- Address plt_address);
+ Address got_address,
+ Address plt_address);
virtual void
do_fill_plt_entry(unsigned char* pov,
- Address got_address,
- Address plt_address,
- unsigned int got_offset,
- unsigned int plt_offset);
+ Address got_address,
+ Address plt_address,
+ unsigned int got_offset,
+ unsigned int plt_offset);
private:
// The size of the first plt entry size.
void
Output_data_plt_aarch64_standard<size, big_endian>::do_fill_first_plt_entry(
unsigned char* pov,
- Address /* got_address */,
- Address /* plt_address */)
+ Address got_address,
+ Address plt_address)
{
// PLT0 of the small PLT looks like this in ELF64 -
// stp x16, x30, [sp, #-16]! Save the reloc and lr on stack.
// PLT0 will be slightly different in ELF32 due to different got entry
// size.
memcpy(pov, this->first_plt_entry, this->first_plt_entry_size);
- // TODO
+ Address gotplt_2nd_ent = got_address + (size / 8) * 2;
+
+ // Fill in the top 21 bits for this: ADRP x16, PLT_GOT + 8 * 2.
+ // ADRP: (PG(S+A)-PG(P)) >> 12) & 0x1fffff.
+ // FIXME: This only works for 64bit
+ AArch64_relocate_functions<size, big_endian>::adrp(pov + 4,
+ gotplt_2nd_ent, plt_address + 4);
+
+ // Fill in R_AARCH64_LDST8_LO12
+ elfcpp::Swap<32, big_endian>::writeval(
+ pov + 8,
+ ((this->first_plt_entry[2] & 0xffc003ff)
+ | ((gotplt_2nd_ent & 0xff8) << 7)));
+
+ // Fill in R_AARCH64_ADD_ABS_LO12
+ elfcpp::Swap<32, big_endian>::writeval(
+ pov + 12,
+ ((this->first_plt_entry[3] & 0xffc003ff)
+ | ((gotplt_2nd_ent & 0xfff) << 10)));
}
// Subsequent entries in the PLT for an executable.
+// FIXME: This only works for 64bit
template<int size, bool big_endian>
void
Output_data_plt_aarch64_standard<size, big_endian>::do_fill_plt_entry(
unsigned char* pov,
- Address /* got_address*/,
- Address /* plt_address */,
- unsigned int /* got_offset */,
- unsigned int /* plt_offset */)
+ Address got_address,
+ Address plt_address,
+ unsigned int got_offset,
+ unsigned int plt_offset)
{
memcpy(pov, this->plt_entry, this->plt_entry_size);
- //TODO
+
+ Address gotplt_entry_address = got_address + got_offset;
+ Address plt_entry_address = plt_address + plt_offset;
+
+ // Fill in R_AARCH64_PCREL_ADR_HI21
+ AArch64_relocate_functions<size, big_endian>::adrp(
+ pov,
+ gotplt_entry_address,
+ plt_entry_address);
+
+ // Fill in R_AARCH64_LDST64_ABS_LO12
+ elfcpp::Swap<32, big_endian>::writeval(
+ pov + 4,
+ ((this->plt_entry[1] & 0xffc003ff)
+ | ((gotplt_entry_address & 0xff8) << 7)));
+
+ // Fill in R_AARCH64_ADD_ABS_LO12
+ elfcpp::Swap<32, big_endian>::writeval(
+ pov + 8,
+ ((this->plt_entry[2] & 0xffc003ff)
+ | ((gotplt_entry_address & 0xfff) <<10)));
+
}
// Write out the PLT. This uses the hand-coded instructions above,
// The base address of the .plt section.
typename elfcpp::Elf_types<size>::Elf_Addr plt_address = this->address();
- // The base address of the .got section.
- typename elfcpp::Elf_types<size>::Elf_Addr got_base = this->got_->address();
// The base address of the PLT portion of the .got section.
typename elfcpp::Elf_types<size>::Elf_Addr got_address
= this->got_plt_->address();
{
// Set and adjust the PLT entry itself.
this->fill_plt_entry(pov, got_address, plt_address,
- got_offset, plt_offset);
+ got_offset, plt_offset);
- // Set the entry in the GOT.
- elfcpp::Swap<size, big_endian>::writeval(got_pov,
- plt_address + plt_offset);
+ // Set the entry in the GOT, which points to plt0.
+ elfcpp::Swap<size, big_endian>::writeval(got_pov, plt_address);
}
gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
of->write_output_view(got_file_offset, got_size, got_view);
}
+// Telling how to update the immediate field of an instruction.
+struct AArch64_howto
+{
+ // The immediate field mask.
+ elfcpp::Elf_Xword dst_mask;
+
+ // The offset to apply relocation immediate
+ int doffset;
+
+ // The second part offset, if the immediate field has two parts.
+ // -1 if the immediate field has only one part.
+ int doffset2;
+};
+
+static const AArch64_howto aarch64_howto[AArch64_reloc_property::INST_NUM] =
+{
+ {0, -1, -1}, // DATA
+ {0x1fffe0, 5, -1}, // MOVW [20:5]-imm16
+ {0xffffe0, 5, -1}, // LD [23:5]-imm19
+ {0x60ffffe0, 29, 5}, // ADR [30:29]-immlo [23:5]-immhi
+ {0x60ffffe0, 29, 5}, // ADRP [30:29]-immlo [23:5]-immhi
+ {0x3ffc00, 10, -1}, // ADD [21:10]-imm12
+ {0x3ffc00, 10, -1}, // LDST [21:10]-imm12
+ {0x7ffe0, 5, -1}, // TBZNZ [18:5]-imm14
+ {0xffffe0, 5, -1}, // CONDB [23:5]-imm19
+ {0x3ffffff, 0, -1}, // B [25:0]-imm26
+ {0x3ffffff, 0, -1}, // CALL [25:0]-imm26
+};
+
+// AArch64 relocate function class
+
+template<int size, bool big_endian>
+class AArch64_relocate_functions
+{
+ public:
+ typedef enum
+ {
+ STATUS_OKAY, // No error during relocation.
+ STATUS_OVERFLOW, // Relocation overflow.
+ STATUS_BAD_RELOC, // Relocation cannot be applied.
+ } Status;
+
+ private:
+ typedef AArch64_relocate_functions<size, big_endian> This;
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
+
+ // Return the page address of the address.
+ // Page(address) = address & ~0xFFF
+
+ static inline typename elfcpp::Swap<size, big_endian>::Valtype
+ Page(Address address)
+ {
+ return (address & (~static_cast<Address>(0xFFF)));
+ }
+
+ // Update instruction (pointed by view) with selected bits (immed).
+ // val = (val & ~dst_mask) | (immed << doffset)
+
+ template<int valsize>
+ static inline void
+ update_view(unsigned char* view,
+ typename elfcpp::Swap<size, big_endian>::Valtype immed,
+ elfcpp::Elf_Xword doffset,
+ elfcpp::Elf_Xword dst_mask)
+ {
+ typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
+
+ // Clear immediate fields.
+ val &= ~dst_mask;
+ elfcpp::Swap<valsize, big_endian>::writeval(wv,
+ static_cast<Valtype>(val | (immed << doffset)));
+ }
+
+ // Update two parts of an instruction (pointed by view) with selected
+ // bits (immed1 and immed2).
+ // val = (val & ~dst_mask) | (immed1 << doffset1) | (immed2 << doffset2)
+
+ template<int valsize>
+ static inline void
+ update_view_two_parts(
+ unsigned char* view,
+ typename elfcpp::Swap<size, big_endian>::Valtype immed1,
+ typename elfcpp::Swap<size, big_endian>::Valtype immed2,
+ elfcpp::Elf_Xword doffset1,
+ elfcpp::Elf_Xword doffset2,
+ elfcpp::Elf_Xword dst_mask)
+ {
+ typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
+ val &= ~dst_mask;
+ elfcpp::Swap<valsize, big_endian>::writeval(wv,
+ static_cast<Valtype>(val | (immed1 << doffset1) |
+ (immed2 << doffset2)));
+ }
+
+ // Update adr or adrp instruction with [32:12] of X.
+ // In adr and adrp: [30:29] immlo [23:5] immhi
+
+ static inline void
+ update_adr(unsigned char* view,
+ typename elfcpp::Swap<size, big_endian>::Valtype x,
+ const AArch64_reloc_property* /* reloc_property */)
+ {
+ elfcpp::Elf_Xword dst_mask = (0x3 << 29) | (0x7ffff << 5);
+ typename elfcpp::Swap<32, big_endian>::Valtype immed =
+ (x >> 12) & 0x1fffff;
+ This::template update_view_two_parts<32>(
+ view,
+ immed & 0x3,
+ (immed & 0x1ffffc) >> 2,
+ 29,
+ 5,
+ dst_mask);
+ }
+
+ public:
+
+ // Do a simple rela relocation at unaligned addresses.
+
+ template<int valsize>
+ static inline typename This::Status
+ rela_ua(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ const AArch64_reloc_property* reloc_property)
+ {
+ typedef typename elfcpp::Swap_unaligned<valsize, big_endian>::Valtype
+ Valtype;
+ typename elfcpp::Elf_types<size>::Elf_Addr x =
+ psymval->value(object, addend);
+ elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view,
+ static_cast<Valtype>(x));
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Do a simple pc-relative relocation at unaligned addresses.
+
+ template<int valsize>
+ static inline typename This::Status
+ pcrela_ua(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ Address address,
+ const AArch64_reloc_property* reloc_property)
+ {
+ typedef typename elfcpp::Swap_unaligned<valsize, big_endian>::Valtype
+ Valtype;
+ Address x = psymval->value(object, addend) - address;
+ elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view,
+ static_cast<Valtype>(x));
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Do a simple rela relocation at aligned addresses.
+
+ template<int valsize>
+ static inline typename This::Status
+ rela(
+ unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ const AArch64_reloc_property* reloc_property)
+ {
+ typedef typename elfcpp::Swap<valsize, big_endian>::Valtype
+ Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Address x = psymval->value(object, addend);
+ elfcpp::Swap<valsize, big_endian>::writeval(wv,
+ static_cast<Valtype>(x));
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Do relocate. Update selected bits in text.
+ // new_val = (val & ~dst_mask) | (immed << doffset)
+
+ template<int valsize>
+ static inline typename This::Status
+ rela_general(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ const AArch64_reloc_property* reloc_property)
+ {
+ // Calculate relocation.
+ Address x = psymval->value(object, addend);
+
+ // Select bits from X.
+ Address immed = reloc_property->select_x_value(x);
+
+ // Update view.
+ const AArch64_reloc_property::Reloc_inst inst =
+ reloc_property->reloc_inst();
+ // If it is a data relocation or instruction has 2 parts of immediate
+ // fields, you should not call rela_general.
+ gold_assert(aarch64_howto[inst].doffset2 == -1 &&
+ aarch64_howto[inst].doffset != -1);
+ This::template update_view<valsize>(view, immed,
+ aarch64_howto[inst].doffset,
+ aarch64_howto[inst].dst_mask);
+
+ // Do check overflow or alignment if needed.
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Do relocate. Update selected bits in text.
+ // new val = (val & ~dst_mask) | (immed << doffset)
+
+ template<int valsize>
+ static inline typename This::Status
+ rela_general(
+ unsigned char* view,
+ typename elfcpp::Swap<size, big_endian>::Valtype s,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ const AArch64_reloc_property* reloc_property)
+ {
+ // Calculate relocation.
+ Address x = s + addend;
+
+ // Select bits from X.
+ Address immed = reloc_property->select_x_value(x);
+
+ // Update view.
+ const AArch64_reloc_property::Reloc_inst inst =
+ reloc_property->reloc_inst();
+ // If it is a data relocation or instruction has 2 parts of immediate
+ // fields, you should not call rela_general.
+ gold_assert(aarch64_howto[inst].doffset2 == -1 &&
+ aarch64_howto[inst].doffset != -1);
+ This::template update_view<valsize>(view, immed,
+ aarch64_howto[inst].doffset,
+ aarch64_howto[inst].dst_mask);
+
+ // Do check overflow or alignment if needed.
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Do address relative relocate. Update selected bits in text.
+ // new val = (val & ~dst_mask) | (immed << doffset)
+
+ template<int valsize>
+ static inline typename This::Status
+ pcrela_general(
+ unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype addend,
+ Address address,
+ const AArch64_reloc_property* reloc_property)
+ {
+ // Calculate relocation.
+ Address x = psymval->value(object, addend) - address;
+
+ // Select bits from X.
+ Address immed = reloc_property->select_x_value(x);
+
+ // Update view.
+ const AArch64_reloc_property::Reloc_inst inst =
+ reloc_property->reloc_inst();
+ // If it is a data relocation or instruction has 2 parts of immediate
+ // fields, you should not call pcrela_general.
+ gold_assert(aarch64_howto[inst].doffset2 == -1 &&
+ aarch64_howto[inst].doffset != -1);
+ This::template update_view<valsize>(view, immed,
+ aarch64_howto[inst].doffset,
+ aarch64_howto[inst].dst_mask);
+
+ // Do check overflow or alignment if needed.
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+ // Calculate PG(S+A) - PG(address), update adrp instruction.
+ // R_AARCH64_ADR_PREL_PG_HI21
+
+ static inline typename This::Status
+ adrp(
+ unsigned char* view,
+ Address sa,
+ Address address)
+ {
+ typename elfcpp::Swap<size, big_endian>::Valtype x =
+ This::Page(sa) - This::Page(address);
+ update_adr(view, x, NULL);
+ return (size == 64 && Bits<32>::has_overflow(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // Calculate PG(S+A) - PG(address), update adrp instruction.
+ // R_AARCH64_ADR_PREL_PG_HI21
+
+ static inline typename This::Status
+ adrp(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ Address addend,
+ Address address,
+ const AArch64_reloc_property* reloc_property)
+ {
+ Address sa = psymval->value(object, addend);
+ typename elfcpp::Swap<size, big_endian>::Valtype x =
+ This::Page(sa) - This::Page(address);
+ update_adr(view, x, reloc_property);
+ return (reloc_property->checkup_x_value(x)
+ ? This::STATUS_OKAY
+ : This::STATUS_OVERFLOW);
+ }
+
+};
+
// Return the number of entries in the PLT.
template<int size, bool big_endian>
template<int size, bool big_endian>
tls::Tls_optimization
Target_aarch64<size, big_endian>::optimize_tls_reloc(bool /* is_final */,
- int /* r_type */)
+ int /* r_type */)
{
//TODO
return tls::TLSOPT_NONE;
}
-// Get the Reference_flags for a particular relocation.
-template<int size, bool big_endian>
-int
-Target_aarch64<size, big_endian>::Scan::get_reference_flags(unsigned int r_type)
-{
- switch (r_type)
- {
- case elfcpp::R_AARCH64_NONE:
- // No symbol reference.
- return 0;
- //TODO
- default:
- // Not expected. We will give an error later.
- return 0;
- }
-}
-
// Returns true if this relocation type could be that of a function pointer.
template<int size, bool big_endian>
case elfcpp::R_AARCH64_ABS64:
//TODO
{
- return true;
+ return true;
}
}
return false;
// not possible to distinguish pointer taken versus a call by looking at
// the relocation types.
return (parameters->options().shared()
- || possible_function_pointer_reloc(r_type));
+ || possible_function_pointer_reloc(r_type));
}
// For safe ICF, scan a relocation for a global symbol to check if it
// When building a shared library, do not fold symbols whose visibility
// is hidden, internal or protected.
return ((parameters->options().shared()
- && (gsym->visibility() == elfcpp::STV_INTERNAL
- || gsym->visibility() == elfcpp::STV_PROTECTED
- || gsym->visibility() == elfcpp::STV_HIDDEN))
- || possible_function_pointer_reloc(r_type));
+ && (gsym->visibility() == elfcpp::STV_INTERNAL
+ || gsym->visibility() == elfcpp::STV_PROTECTED
+ || gsym->visibility() == elfcpp::STV_HIDDEN))
+ || possible_function_pointer_reloc(r_type));
}
// Report an unsupported relocation against a local symbol.
template<int size, bool big_endian>
void
Target_aarch64<size, big_endian>::Scan::check_non_pic(Relobj* object,
- unsigned int r_type)
+ unsigned int r_type)
{
gold_assert(r_type != elfcpp::R_AARCH64_NONE);
return;
gold_assert(parameters->options().output_is_position_independent());
object->error(_("requires unsupported dynamic reloc; "
- "recompile with -fPIC"));
+ "recompile with -fPIC"));
this->issued_non_pic_error_ = true;
return;
}
Symbol_table* /* symtab */,
Layout* /* layout */,
Target_aarch64<size, big_endian>* /* target */,
- Sized_relobj_file<size, big_endian>* /* object */,
+ Sized_relobj_file<size, big_endian>* object,
unsigned int /* data_shndx */,
Output_section* /* output_section */,
const elfcpp::Rela<size, big_endian>& /* reloc */,
switch (r_type)
{
- case elfcpp::R_AARCH64_NONE:
+ case elfcpp::R_AARCH64_ABS64:
+ case elfcpp::R_AARCH64_ABS32:
+ case elfcpp::R_AARCH64_ABS16:
+ // If building a shared library or pie, we need to mark this as a dynmic
+ // reloction, so that the dynamic loader can relocate it.
+ // Not supported yet.
+ if (parameters->options().output_is_position_independent())
+ {
+ gold_error(_("%s: unsupported ABS64 relocation type for pie or "
+ "shared library.\n"),
+ object->name().c_str());
+ }
+ break;
+
+ // Relocations to generate 19, 21 and 33-bit PC-relative address
+ case elfcpp::R_AARCH64_ADR_PREL_PG_HI21: // 275
+ case elfcpp::R_AARCH64_LDST8_ABS_LO12_NC: // 278
+ case elfcpp::R_AARCH64_LDST64_ABS_LO12_NC: // 286
+ case elfcpp::R_AARCH64_ADD_ABS_LO12_NC: // 277
break;
- //TODO
+ // Control flow, pc-relative. We don't need to do anything for a relative
+ // addressing relocation against a local symbol if it does not reference
+ // the GOT.
+ case elfcpp::R_AARCH64_CALL26: // 283
+ break;
+
+ default:
+ unsupported_reloc_local(object, r_type);
}
}
template<int size, bool big_endian>
inline void
Target_aarch64<size, big_endian>::Scan::global(
- Symbol_table* /* symtab */,
- Layout* /* layout */,
- Target_aarch64<size, big_endian>* /* target */,
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_aarch64<size, big_endian>* target,
Sized_relobj_file<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 r_type,
+ Symbol* gsym)
{
- //TODO
+ switch (r_type)
+ {
+ case elfcpp::R_AARCH64_ABS64:
+ // This is used to fill the GOT absolute address.
+ if (gsym->needs_plt_entry())
+ {
+ target->make_plt_entry(symtab, layout, gsym);
+ }
+ break;
+
+ case elfcpp::R_AARCH64_ADR_PREL_PG_HI21:
+ case elfcpp::R_AARCH64_ADR_PREL_PG_HI21_NC:
+ case elfcpp::R_AARCH64_ADD_ABS_LO12_NC:
+ {
+ // Do nothing here.
+ break;
+ }
+
+ case elfcpp::R_AARCH64_ADR_GOT_PAGE:
+ case elfcpp::R_AARCH64_LD64_GOT_LO12_NC:
+ {
+ // This pair of relocations is used to access a specific GOT entry.
+ // Note a GOT entry is an *address* to a symbol.
+ // The symbol requires a GOT entry
+ Output_data_got_aarch64<size, big_endian>* got =
+ target->got_section(symtab, layout);
+ if (gsym->final_value_is_known())
+ {
+ got->add_global(gsym, GOT_TYPE_STANDARD);
+ }
+ else
+ {
+ Reloc_section* rela_dyn = target->rela_dyn_section(layout);
+ if (gsym->is_from_dynobj()
+ || gsym->is_undefined()
+ || gsym->is_preemptible()
+ || (gsym->visibility() == elfcpp::STV_PROTECTED
+ && parameters->options().shared()))
+ got->add_global_with_rel(gsym, GOT_TYPE_STANDARD,
+ rela_dyn, elfcpp::R_AARCH64_GLOB_DAT);
+ else
+ {
+ // Not implemented yet.
+ gold_assert(false);
+ }
+ }
+ break;
+ }
+
+ case elfcpp::R_AARCH64_JUMP26:
+ case elfcpp::R_AARCH64_CALL26:
+ {
+ if (gsym->final_value_is_known())
+ break;
+
+ if (gsym->is_defined() &&
+ !gsym->is_from_dynobj() &&
+ !gsym->is_preemptible())
+ break;
+
+ // Make plt entry for function call.
+ const AArch64_reloc_property* arp =
+ aarch64_reloc_property_table->get_reloc_property(r_type);
+ gold_assert(arp != NULL);
+ target->make_plt_entry(symtab, layout, gsym);
+ break;
+ }
+
+ default:
+ gold_error(_("%s: unsupported reloc type"),
+ aarch64_reloc_property_table->
+ reloc_name_in_error_message(r_type).c_str());
+ }
return;
+} // End of Scan::global
+
+// Create the PLT section.
+template<int size, bool big_endian>
+void
+Target_aarch64<size, big_endian>::make_plt_section(
+ Symbol_table* symtab, Layout* layout)
+{
+ if (this->plt_ == NULL)
+ {
+ // Create the GOT section first.
+ this->got_section(symtab, layout);
+
+ this->plt_ = this->make_data_plt(layout, this->got_plt_);
+
+ layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_EXECINSTR),
+ this->plt_, ORDER_PLT, false);
+
+ // Make the sh_info field of .rela.plt point to .plt.
+ Output_section* rela_plt_os = this->plt_->rela_plt()->output_section();
+ rela_plt_os->set_info_section(this->plt_->output_section());
+ }
+}
+
+// Create a PLT entry for a global symbol.
+
+template<int size, bool big_endian>
+void
+Target_aarch64<size, big_endian>::make_plt_entry(
+ Symbol_table* symtab,
+ Layout* layout,
+ Symbol* gsym)
+{
+ if (gsym->has_plt_offset())
+ return;
+
+ if (this->plt_ == NULL)
+ this->make_plt_section(symtab, layout);
+
+ this->plt_->add_entry(gsym);
}
template<int size, bool big_endian>
return;
}
- gold::gc_process_relocs<size, big_endian,
- Target_aarch64<size, big_endian>,
- elfcpp::SHT_RELA,
- typename Target_aarch64<size, big_endian>::Scan,
- typename Target_aarch64<size, big_endian>::Relocatable_size_for_reloc>(
+ gold::gc_process_relocs<
+ size, big_endian,
+ Target_aarch64<size, big_endian>,
+ elfcpp::SHT_RELA,
+ typename Target_aarch64<size, big_endian>::Scan,
+ typename Target_aarch64<size, big_endian>::Relocatable_size_for_reloc>(
symtab,
layout,
this,
object->name().c_str());
return;
}
-
- gold::scan_relocs<size, big_endian, Target_aarch64<size, big_endian>,
- elfcpp::SHT_RELA,
- typename Target_aarch64<size, big_endian>::Scan>(
+ gold::scan_relocs<size, big_endian, Target_aarch64, elfcpp::SHT_RELA, Scan>(
symtab,
layout,
this,
template<int size, bool big_endian>
void
Target_aarch64<size, big_endian>::do_finalize_sections(
- Layout* /* layout */,
+ Layout* layout,
const Input_objects*,
- Symbol_table* /* symtab */)
+ Symbol_table* symtab)
{
- //TODO
+ const Reloc_section* rel_plt = (this->plt_ == NULL
+ ? NULL
+ : this->plt_->rela_plt());
+ layout->add_target_dynamic_tags(false, this->got_plt_, rel_plt,
+ this->rela_dyn_, true, false);
+
+ // Set the size of the _GLOBAL_OFFSET_TABLE_ symbol to the size of
+ // the .got.plt section.
+ Symbol* sym = this->global_offset_table_;
+ if (sym != NULL)
+ {
+ uint64_t data_size = this->got_plt_->current_data_size();
+ symtab->get_sized_symbol<size>(sym)->set_symsize(data_size);
+
+ // If the .got section is more than 0x8000 bytes, we add
+ // 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
+ // bit relocations have a greater chance of working.
+ if (data_size >= 0x8000)
+ symtab->get_sized_symbol<size>(sym)->set_value(
+ symtab->get_sized_symbol<size>(sym)->value() + 0x8000);
+ }
+
+ if (parameters->doing_static_link()
+ && (this->plt_ == NULL || !this->plt_->has_irelative_section()))
+ {
+ // If linking statically, make sure that the __rela_iplt symbols
+ // were defined if necessary, even if we didn't create a PLT.
+ static const Define_symbol_in_segment syms[] =
+ {
+ {
+ "__rela_iplt_start", // name
+ elfcpp::PT_LOAD, // segment_type
+ elfcpp::PF_W, // segment_flags_set
+ elfcpp::PF(0), // segment_flags_clear
+ 0, // value
+ 0, // size
+ elfcpp::STT_NOTYPE, // type
+ elfcpp::STB_GLOBAL, // binding
+ elfcpp::STV_HIDDEN, // visibility
+ 0, // nonvis
+ Symbol::SEGMENT_START, // offset_from_base
+ true // only_if_ref
+ },
+ {
+ "__rela_iplt_end", // name
+ elfcpp::PT_LOAD, // segment_type
+ elfcpp::PF_W, // segment_flags_set
+ elfcpp::PF(0), // segment_flags_clear
+ 0, // value
+ 0, // size
+ elfcpp::STT_NOTYPE, // type
+ elfcpp::STB_GLOBAL, // binding
+ elfcpp::STV_HIDDEN, // visibility
+ 0, // nonvis
+ Symbol::SEGMENT_START, // offset_from_base
+ true // only_if_ref
+ }
+ };
+
+ symtab->define_symbols(layout, 2, syms,
+ layout->script_options()->saw_sections_clause());
+ }
+
return;
}
template<int size, bool big_endian>
inline bool
Target_aarch64<size, big_endian>::Relocate::relocate(
- const Relocate_info<size, big_endian>* /* relinfo */,
- Target_aarch64<size, big_endian>* /* target */,
+ const Relocate_info<size, big_endian>* relinfo,
+ Target_aarch64<size, big_endian>* 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 */,
+ 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 */)
{
- //TODO
+ if (view == NULL)
+ return true;
+
+ typedef AArch64_relocate_functions<size, big_endian> Reloc;
+
+ const AArch64_reloc_property* reloc_property =
+ aarch64_reloc_property_table->get_reloc_property(r_type);
+
+ if (reloc_property == NULL)
+ {
+ std::string reloc_name =
+ aarch64_reloc_property_table->reloc_name_in_error_message(r_type);
+ gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+ _("cannot relocate %s in object file"),
+ reloc_name.c_str());
+ return true;
+ }
+
+ const Sized_relobj_file<size, big_endian>* object = relinfo->object;
+
+ // Pick the value to use for symbols defined in the PLT.
+ Symbol_value<size> symval;
+ if (gsym != NULL
+ && gsym->use_plt_offset(reloc_property->reference_flags()))
+ {
+ symval.set_output_value(target->plt_address_for_global(gsym));
+ psymval = &symval;
+ }
+ else if (gsym == NULL && psymval->is_ifunc_symbol())
+ {
+ 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));
+ psymval = &symval;
+ }
+ }
+
+ const elfcpp::Elf_Xword addend = rela.get_r_addend();
+
+ // Get the GOT offset if needed.
+ // For aarch64, the GOT pointer points to the start of the GOT section.
+ bool have_got_offset = false;
+ int got_offset = 0;
+ int got_base = (target->got_ != NULL
+ ? (target->got_->current_data_size() >= 0x8000
+ ? 0x8000 : 0)
+ : 0);
+ switch (r_type)
+ {
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G0:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G0_NC:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G1:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G1_NC:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G2:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G2_NC:
+ case elfcpp::R_AARCH64_MOVW_GOTOFF_G3:
+ case elfcpp::R_AARCH64_GOTREL64:
+ case elfcpp::R_AARCH64_GOTREL32:
+ case elfcpp::R_AARCH64_GOT_LD_PREL19:
+ case elfcpp::R_AARCH64_LD64_GOTOFF_LO15:
+ case elfcpp::R_AARCH64_ADR_GOT_PAGE:
+ case elfcpp::R_AARCH64_LD64_GOT_LO12_NC:
+ case elfcpp::R_AARCH64_LD64_GOTPAGE_LO15:
+ if (gsym != NULL)
+ {
+ gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
+ got_offset = gsym->got_offset(GOT_TYPE_STANDARD) - got_base;
+ }
+ 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)
+ - got_base);
+ }
+ have_got_offset = true;
+ break;
+ default:
+ break;
+ }
+
+ typename Reloc::Status reloc_status = Reloc::STATUS_OKAY;
+ typename elfcpp::Elf_types<size>::Elf_Addr value;
+ switch (r_type)
+ {
+ case elfcpp::R_AARCH64_NONE:
+ break;
+
+ case elfcpp::R_AARCH64_ABS64:
+ reloc_status = Reloc::template rela_ua<64>(
+ view, object, psymval, addend, reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_ABS32:
+ reloc_status = Reloc::template rela_ua<32>(
+ view, object, psymval, addend, reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_ABS16:
+ reloc_status = Reloc::template rela_ua<16>(
+ view, object, psymval, addend, reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_PREL64:
+ reloc_status = Reloc::template pcrela_ua<64>(
+ view, object, psymval, addend, address, reloc_property);
+
+ case elfcpp::R_AARCH64_PREL32:
+ reloc_status = Reloc::template pcrela_ua<32>(
+ view, object, psymval, addend, address, reloc_property);
+
+ case elfcpp::R_AARCH64_PREL16:
+ reloc_status = Reloc::template pcrela_ua<16>(
+ view, object, psymval, addend, address, reloc_property);
+
+ case elfcpp::R_AARCH64_ADR_PREL_PG_HI21_NC:
+ case elfcpp::R_AARCH64_ADR_PREL_PG_HI21:
+ reloc_status = Reloc::adrp(view, object, psymval, addend, address,
+ reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_LDST8_ABS_LO12_NC:
+ case elfcpp::R_AARCH64_LDST16_ABS_LO12_NC:
+ case elfcpp::R_AARCH64_LDST32_ABS_LO12_NC:
+ case elfcpp::R_AARCH64_LDST64_ABS_LO12_NC:
+ case elfcpp::R_AARCH64_LDST128_ABS_LO12_NC:
+ case elfcpp::R_AARCH64_ADD_ABS_LO12_NC:
+ reloc_status = Reloc::template rela_general<32>(
+ view, object, psymval, addend, reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_CALL26:
+ case elfcpp::R_AARCH64_JUMP26:
+ reloc_status = Reloc::template pcrela_general<32>(
+ view, object, psymval, addend, address, reloc_property);
+ break;
+
+ case elfcpp::R_AARCH64_ADR_GOT_PAGE:
+ gold_assert(have_got_offset);
+ value = target->got_->address() + got_base + got_offset;
+ reloc_status = Reloc::adrp(view, value + addend, address);
+ break;
+
+ case elfcpp::R_AARCH64_LD64_GOT_LO12_NC:
+ gold_assert(have_got_offset);
+ value = target->got_->address() + got_base + got_offset;
+ reloc_status = Reloc::template rela_general<32>(
+ view, value, addend, reloc_property);
+ break;
+
+ default:
+ gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+ _("unsupported reloc aaa %u"),
+ r_type);
+ break;
+ }
+
+ // Report any errors.
+ switch (reloc_status)
+ {
+ case Reloc::STATUS_OKAY:
+ break;
+ case Reloc::STATUS_OVERFLOW:
+ gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+ _("relocation overflow in %s"),
+ reloc_property->name().c_str());
+ break;
+ case Reloc::STATUS_BAD_RELOC:
+ gold_error_at_location(
+ relinfo,
+ relnum,
+ rela.get_r_offset(),
+ _("unexpected opcode while processing relocation %s"),
+ reloc_property->name().c_str());
+ break;
+ default:
+ gold_unreachable();
+ }
+
return true;
}
template<int size, bool big_endian>
void
Target_aarch64<size, big_endian>::relocate_section(
- const Relocate_info<size, big_endian>* /* relinfo */,
+ 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 */)
+ 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)
{
- //TODO
gold_assert(sh_type == elfcpp::SHT_RELA);
+ typedef typename Target_aarch64<size, big_endian>::Relocate AArch64_relocate;
+ gold::relocate_section<size, big_endian, Target_aarch64, elfcpp::SHT_RELA,
+ AArch64_relocate, gold::Default_comdat_behavior>(
+ 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
gold_assert(sh_type == elfcpp::SHT_RELA);
}
-
// The selector for aarch64 object files.
template<int size, bool big_endian>
class Target_selector_aarch64 : public Target_selector
{
public:
- Target_selector_aarch64()
- : Target_selector(elfcpp::EM_AARCH64, size, big_endian,
- (size == 64
- ? (big_endian ? "elf64-bigaarch64"
- : "elf64-littleaarch64")
- : (big_endian ? "elf32-bigaarch64"
- : "elf32-littleaarch64")),
- (size == 64
- ? (big_endian ? "aarch64_elf64_be_vec"
- : "aarch64_elf64_le_vec")
- : (big_endian ? "aarch64_elf32_be_vec"
- : "aarch64_elf32_le_vec")))
- { }
+ Target_selector_aarch64();
virtual Target*
do_instantiate_target()
{ return new Target_aarch64<size, big_endian>(); }
};
+template<>
+Target_selector_aarch64<32, true>::Target_selector_aarch64()
+ : Target_selector(elfcpp::EM_AARCH64, 32, true,
+ "elf32-bigaarch64", "aarch64_elf32_be_vec")
+{ }
+
+template<>
+Target_selector_aarch64<32, false>::Target_selector_aarch64()
+ : Target_selector(elfcpp::EM_AARCH64, 32, false,
+ "elf32-littleaarch64", "aarch64_elf32_le_vec")
+{ }
+
+template<>
+Target_selector_aarch64<64, true>::Target_selector_aarch64()
+ : Target_selector(elfcpp::EM_AARCH64, 64, true,
+ "elf64-bigaarch64", "aarch64_elf64_be_vec")
+{ }
+
+template<>
+Target_selector_aarch64<64, false>::Target_selector_aarch64()
+ : Target_selector(elfcpp::EM_AARCH64, 64, false,
+ "elf64-littleaarch64", "aarch64_elf64_le_vec")
+{ }
+
Target_selector_aarch64<32, true> target_selector_aarch64elf32b;
Target_selector_aarch64<32, false> target_selector_aarch64elf32;
Target_selector_aarch64<64, true> target_selector_aarch64elfb;
Target_selector_aarch64<64, false> target_selector_aarch64elf;
-
} // End anonymous namespace.
projects / binutils-gdb.git / commitdiff