// aarch64.cc -- aarch64 target support for gold.
-// Copyright (C) 2014-2015 Free Software Foundation, Inc.
+// Copyright (C) 2014-2016 Free Software Foundation, Inc.
// Written by Jing Yu <jingyu@google.com> and Han Shen <shenhan@google.com>.
// This file is part of gold.
if (aarch64_valid_for_adrp_p(location, dest))
return ST_ADRP_BRANCH;
- if (parameters->options().output_is_position_independent()
- && parameters->options().output_is_executable())
+ // Always use PC-relative addressing in case of -shared or -pie.
+ if (parameters->options().output_is_position_independent())
return ST_LONG_BRANCH_PCREL;
+ // This saves 2 insns per stub, compared to ST_LONG_BRANCH_PCREL.
+ // But is only applicable to non-shared or non-pie.
return ST_LONG_BRANCH_ABS;
}
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);
+
// Relocate a section during a relocatable link.
void
relocate_relocs(
size_t reloc_count,
Output_section* output_section,
typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section,
- const Relocatable_relocs*,
unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr view_address,
section_size_type view_size,
// 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_aarch64*,
- Output_section*,
- size_t relnum, const elfcpp::Rela<size, big_endian>&,
- unsigned int r_type, const Sized_symbol<size>*,
- const Symbol_value<size>*,
+ relocate(const Relocate_info<size, big_endian>*, unsigned int,
+ Target_aarch64*, 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);
}; // End of class Relocate
- // 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*);
- };
-
// Adjust TLS relocation type based on the options and whether this
// is a local symbol.
static tls::Tls_optimization
static_cast<Valtype>(val | (immed << doffset)));
}
+ public:
+
// Update selected bits in text.
template<int valsize>
: This::STATUS_OVERFLOW);
}
- public:
-
// Construct a B insn. Note, although we group it here with other relocation
// operation, there is actually no 'relocation' involved here.
static inline void
typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian>
Reloc_section;
- Output_data_got_aarch64<size, big_endian>* got =
- target->got_section(symtab, layout);
unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
// A local STT_GNU_IFUNC symbol may require a PLT entry.
switch (r_type)
{
+ case elfcpp::R_AARCH64_NONE:
+ break;
+
case elfcpp::R_AARCH64_ABS32:
case elfcpp::R_AARCH64_ABS16:
if (parameters->options().output_is_position_independent())
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.
+ case elfcpp::R_AARCH64_LD64_GOTPAGE_LO15:
+ // The above relocations are used to access GOT entries.
{
+ Output_data_got_aarch64<size, big_endian>* got =
+ target->got_section(symtab, layout);
bool is_new = false;
// This symbol requires a GOT entry.
if (is_ifunc)
}
break;
+ case elfcpp::R_AARCH64_MOVW_UABS_G0: // 263
+ case elfcpp::R_AARCH64_MOVW_UABS_G0_NC: // 264
+ case elfcpp::R_AARCH64_MOVW_UABS_G1: // 265
+ case elfcpp::R_AARCH64_MOVW_UABS_G1_NC: // 266
+ case elfcpp::R_AARCH64_MOVW_UABS_G2: // 267
+ case elfcpp::R_AARCH64_MOVW_UABS_G2_NC: // 268
+ case elfcpp::R_AARCH64_MOVW_UABS_G3: // 269
+ case elfcpp::R_AARCH64_MOVW_SABS_G0: // 270
+ case elfcpp::R_AARCH64_MOVW_SABS_G1: // 271
+ case elfcpp::R_AARCH64_MOVW_SABS_G2: // 272
+ if (parameters->options().output_is_position_independent())
+ {
+ gold_error(_("%s: unsupported reloc %u in pos independent link."),
+ object->name().c_str(), r_type);
+ }
+ break;
+
case elfcpp::R_AARCH64_LD_PREL_LO19: // 273
case elfcpp::R_AARCH64_ADR_PREL_LO21: // 274
case elfcpp::R_AARCH64_ADR_PREL_PG_HI21: // 275
// Create a GOT entry for the tp-relative offset.
if (!parameters->doing_static_link())
{
+ Output_data_got_aarch64<size, big_endian>* got =
+ target->got_section(symtab, layout);
got->add_local_with_rel(object, r_sym, GOT_TYPE_TLS_OFFSET,
target->rela_dyn_section(layout),
elfcpp::R_AARCH64_TLS_TPREL64);
else if (!object->local_has_got_offset(r_sym,
GOT_TYPE_TLS_OFFSET))
{
+ Output_data_got_aarch64<size, big_endian>* got =
+ target->got_section(symtab, layout);
got->add_local(object, r_sym, GOT_TYPE_TLS_OFFSET);
unsigned int got_offset =
object->local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET);
}
gold_assert(tlsopt == tls::TLSOPT_NONE);
+ Output_data_got_aarch64<size, big_endian>* got =
+ target->got_section(symtab, layout);
got->add_local_pair_with_rel(object,r_sym, data_shndx,
GOT_TYPE_TLS_PAIR,
target->rela_dyn_section(layout),
switch (r_type)
{
+ case elfcpp::R_AARCH64_NONE:
+ break;
+
case elfcpp::R_AARCH64_ABS16:
case elfcpp::R_AARCH64_ABS32:
case elfcpp::R_AARCH64_ABS64:
}
break;
+ case elfcpp::R_AARCH64_MOVW_UABS_G0: // 263
+ case elfcpp::R_AARCH64_MOVW_UABS_G0_NC: // 264
+ case elfcpp::R_AARCH64_MOVW_UABS_G1: // 265
+ case elfcpp::R_AARCH64_MOVW_UABS_G1_NC: // 266
+ case elfcpp::R_AARCH64_MOVW_UABS_G2: // 267
+ case elfcpp::R_AARCH64_MOVW_UABS_G2_NC: // 268
+ case elfcpp::R_AARCH64_MOVW_UABS_G3: // 269
+ case elfcpp::R_AARCH64_MOVW_SABS_G0: // 270
+ case elfcpp::R_AARCH64_MOVW_SABS_G1: // 271
+ case elfcpp::R_AARCH64_MOVW_SABS_G2: // 272
+ if (parameters->options().output_is_position_independent())
+ {
+ gold_error(_("%s: unsupported reloc %u in pos independent link."),
+ object->name().c_str(), r_type);
+ }
+ break;
+
case elfcpp::R_AARCH64_LD_PREL_LO19: // 273
case elfcpp::R_AARCH64_ADR_PREL_LO21: // 274
case elfcpp::R_AARCH64_ADR_PREL_PG_HI21: // 275
case elfcpp::R_AARCH64_ADR_GOT_PAGE:
case elfcpp::R_AARCH64_LD64_GOT_LO12_NC:
+ case elfcpp::R_AARCH64_LD64_GOTPAGE_LO15:
{
- // This pair of relocations is used to access a specific GOT entry.
+ // The above relocations are used to access GOT entries.
// Note a GOT entry is an *address* to a symbol.
// The symbol requires a GOT entry
Output_data_got_aarch64<size, big_endian>* got =
size_t local_symbol_count,
const unsigned char* plocal_symbols)
{
+ typedef Target_aarch64<size, big_endian> Aarch64;
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
+
if (sh_type == elfcpp::SHT_REL)
{
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, Aarch64, Scan, Classify_reloc>(
symtab,
layout,
this,
size_t local_symbol_count,
const unsigned char* plocal_symbols)
{
+ typedef Target_aarch64<size, big_endian> Aarch64;
+ typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian>
+ Classify_reloc;
+
if (sh_type == elfcpp::SHT_REL)
{
gold_error(_("%s: unsupported REL reloc section"),
object->name().c_str());
return;
}
- gold::scan_relocs<size, big_endian, Target_aarch64, elfcpp::SHT_RELA, Scan>(
+
+ gold::scan_relocs<size, big_endian, Aarch64, Scan, Classify_reloc>(
symtab,
layout,
this,
inline bool
Target_aarch64<size, big_endian>::Relocate::relocate(
const Relocate_info<size, big_endian>* relinfo,
+ unsigned int,
Target_aarch64<size, big_endian>* 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,
typedef AArch64_relocate_functions<size, big_endian> Reloc;
+ const elfcpp::Rela<size, big_endian> rela(preloc);
+ unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info());
const AArch64_reloc_property* reloc_property =
aarch64_reloc_property_table->get_reloc_property(r_type);
view, object, psymval, addend, address, reloc_property);
break;
+ case elfcpp::R_AARCH64_MOVW_UABS_G0:
+ case elfcpp::R_AARCH64_MOVW_UABS_G0_NC:
+ case elfcpp::R_AARCH64_MOVW_UABS_G1:
+ case elfcpp::R_AARCH64_MOVW_UABS_G1_NC:
+ case elfcpp::R_AARCH64_MOVW_UABS_G2:
+ case elfcpp::R_AARCH64_MOVW_UABS_G2_NC:
+ case elfcpp::R_AARCH64_MOVW_UABS_G3:
+ reloc_status = Reloc::template rela_general<32>(
+ view, object, psymval, addend, reloc_property);
+ break;
+ case elfcpp::R_AARCH64_MOVW_SABS_G0:
+ case elfcpp::R_AARCH64_MOVW_SABS_G1:
+ case elfcpp::R_AARCH64_MOVW_SABS_G2:
+ reloc_status = Reloc::movnz(view, psymval->value(object, addend),
+ reloc_property);
+ break;
+
case elfcpp::R_AARCH64_LD_PREL_LO19:
reloc_status = Reloc::template pcrela_general<32>(
view, object, psymval, addend, address, reloc_property);
view, value, addend, reloc_property);
break;
+ case elfcpp::R_AARCH64_LD64_GOTPAGE_LO15:
+ {
+ gold_assert(have_got_offset);
+ value = target->got_->address() + got_base + got_offset + addend -
+ Reloc::Page(target->got_->address() + got_base);
+ if ((value & 7) != 0)
+ reloc_status = Reloc::STATUS_OVERFLOW;
+ else
+ reloc_status = Reloc::template reloc_common<32>(
+ view, value, reloc_property);
+ break;
+ }
+
case elfcpp::R_AARCH64_TLSGD_ADR_PAGE21:
case elfcpp::R_AARCH64_TLSGD_ADD_LO12_NC:
case elfcpp::R_AARCH64_TLSLD_ADR_PAGE21:
}
if (tlsopt == tls::TLSOPT_TO_IE)
{
- if (tls_segment == NULL)
- {
- gold_assert(parameters->errors()->error_count() > 0
- || issue_undefined_symbol_error(gsym));
- return aarch64_reloc_funcs::STATUS_BAD_RELOC;
- }
return tls_desc_gd_to_ie(relinfo, target, rela, r_type,
view, psymval, got_entry_address,
address);
section_size_type view_size,
const Reloc_symbol_changes* reloc_symbol_changes)
{
- gold_assert(sh_type == elfcpp::SHT_RELA);
+ typedef Target_aarch64<size, big_endian> Aarch64;
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>(
+ 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, Aarch64, AArch64_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_aarch64<size, big_endian>::Relocatable_size_for_reloc::
-get_size_for_reloc(
- unsigned int ,
- Relobj* )
-{
- // We will never support SHT_REL relocations.
- 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_aarch64<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);
+}
+
// Relocate a section during a relocatable link.
template<int size, bool big_endian>
size_t reloc_count,
Output_section* output_section,
typename elfcpp::Elf_types<size>::Elf_Off 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)
{
+ 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,
}
if (do_report)
{
- gold_info(_("Erratum 843419 found and fixed at \"%s\", "
- "section %d, offset 0x%08x."),
- relobj->name().c_str(), shndx,
- (unsigned int)(span_start + offset));
unsigned int erratum_insn_offset =
span_start + offset + insn_offset;
Address erratum_address =
projects / deliverable / binutils-gdb.git / blobdiff