// powerpc.cc -- powerpc target support for gold.
-// Copyright (C) 2008-2015 Free Software Foundation, Inc.
+// Copyright (C) 2008-2016 Free Software Foundation, Inc.
// Written by David S. Miller <davem@davemloft.net>
// and David Edelsohn <edelsohn@gnu.org>
template<int size, bool big_endian>
class Stub_table;
+template<int size, bool big_endian>
+class Output_data_save_res;
+
template<int size, bool big_endian>
class Target_powerpc;
// Add a reference from SRC_OBJ, SRC_INDX to this object's .opd
// section at DST_OFF.
void
- add_reference(Object* src_obj,
+ add_reference(Relobj* src_obj,
unsigned int src_indx,
typename elfcpp::Elf_types<size>::Elf_Addr dst_off)
{
tlsld_got_offset_(-1U),
stub_tables_(), branch_lookup_table_(), branch_info_(),
plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0),
- stub_group_size_(0)
+ stub_group_size_(0), savres_section_(0)
{
}
do_can_check_for_function_pointers() const
{ return true; }
+ // Adjust -fsplit-stack code which calls non-split-stack code.
+ void
+ do_calls_non_split(Relobj* object, unsigned int shndx,
+ section_offset_type fnoffset, section_size_type fnsize,
+ const unsigned char* prelocs, size_t reloc_count,
+ unsigned char* view, section_size_type view_size,
+ std::string* from, std::string* to) const;
+
// Relocate a section.
void
relocate_section(const Relocate_info<size, big_endian>*,
Output_section* output_section,
typename elfcpp::Elf_types<size>::Elf_Off
offset_in_output_section,
- const Relocatable_relocs*,
unsigned char*,
Address view_address,
section_size_type,
return 24;
}
+ Output_data_save_res<size, big_endian>*
+ savres_section() const
+ {
+ return this->savres_section_;
+ }
+
// Add any special sections for this symbol to the gc work list.
// For powerpc64, this adds the code section of a function
// descriptor.
// section of a function descriptor.
void
do_gc_add_reference(Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
Address dst_off) const;
// 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_powerpc*,
- 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_powerpc*, 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);
};
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));
}
// Look over all the input sections, deciding where to place stubs.
bool relax_failed_;
int relax_fail_count_;
int32_t stub_group_size_;
+
+ Output_data_save_res<size, big_endian> *savres_section_;
};
template<>
0, // large_common_section_flags
NULL, // attributes_section
NULL, // attributes_vendor
- "_start" // entry_symbol_name
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
template<>
0, // large_common_section_flags
NULL, // attributes_section
NULL, // attributes_vendor
- "_start" // entry_symbol_name
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
template<>
0, // large_common_section_flags
NULL, // attributes_section
NULL, // attributes_vendor
- "_start" // entry_symbol_name
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
template<>
0, // large_common_section_flags
NULL, // attributes_section
NULL, // attributes_vendor
- "_start" // entry_symbol_name
+ "_start", // entry_symbol_name
+ 32, // hash_entry_size
};
inline bool
private:
typedef Powerpc_relocate_functions<size, big_endian> This;
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
+ typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress;
template<int valsize>
static inline bool
return stat;
}
+ // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0
+ static inline Status
+ addr16_dq(unsigned char* view, Address value, Overflow_check overflow)
+ {
+ Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow);
+ if ((value & 15) != 0)
+ stat = STATUS_OVERFLOW;
+ return stat;
+ }
+
// R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
static inline void
addr16_hi(unsigned char* view, Address value)
stat = STATUS_OVERFLOW;
return stat;
}
+
+ // R_POWERPC_REL16DX_HA
+ static inline Status
+ addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<32, big_endian>::readval(wv);
+ value += 0x8000;
+ value = static_cast<SignedAddress>(value) >> 16;
+ val |= (value & 0xffc1) | ((value & 0x3e) << 15);
+ elfcpp::Swap<32, big_endian>::writeval(wv, val);
+ return overflowed<16>(value, overflow);
+ }
};
// Set ABI version for input and output.
symtab_(symtab), layout_(layout),
header_ent_cnt_(size == 32 ? 3 : 1),
header_index_(size == 32 ? 0x2000 : 0)
- { }
+ {
+ if (size == 64)
+ this->set_addralign(256);
+ }
// Override all the Output_data_got methods we use so as to first call
// reserve_ent().
this->object_->section_name(this->shndx_).c_str());
return true;
}
+ bool save_res = (size == 64
+ && gsym != NULL
+ && gsym->source() == Symbol::IN_OUTPUT_DATA
+ && gsym->output_data() == target->savres_section());
return stub_table->add_long_branch_entry(this->object_,
- this->r_type_, from, to);
+ this->r_type_,
+ from, to, save_res);
}
}
return true;
static const uint32_t add_0_11_11 = 0x7c0b5a14;
static const uint32_t add_2_2_11 = 0x7c425a14;
+static const uint32_t add_2_2_12 = 0x7c426214;
static const uint32_t add_3_3_2 = 0x7c631214;
static const uint32_t add_3_3_13 = 0x7c636a14;
static const uint32_t add_11_0_11 = 0x7d605a14;
static const uint32_t addi_2_2 = 0x38420000;
static const uint32_t addi_3_3 = 0x38630000;
static const uint32_t addi_11_11 = 0x396b0000;
+static const uint32_t addi_12_1 = 0x39810000;
static const uint32_t addi_12_12 = 0x398c0000;
static const uint32_t addis_0_2 = 0x3c020000;
static const uint32_t addis_0_13 = 0x3c0d0000;
+static const uint32_t addis_2_12 = 0x3c4c0000;
static const uint32_t addis_11_2 = 0x3d620000;
static const uint32_t addis_11_11 = 0x3d6b0000;
static const uint32_t addis_11_30 = 0x3d7e0000;
+static const uint32_t addis_12_1 = 0x3d810000;
static const uint32_t addis_12_2 = 0x3d820000;
static const uint32_t addis_12_12 = 0x3d8c0000;
static const uint32_t b = 0x48000000;
static const uint32_t bctr = 0x4e800420;
static const uint32_t blr = 0x4e800020;
static const uint32_t bnectr_p4 = 0x4ce20420;
+static const uint32_t cmpld_7_12_0 = 0x7fac0040;
static const uint32_t cmpldi_2_0 = 0x28220000;
static const uint32_t cror_15_15_15 = 0x4def7b82;
static const uint32_t cror_31_31_31 = 0x4ffffb82;
static const uint32_t ld_2_1 = 0xe8410000;
static const uint32_t ld_2_2 = 0xe8420000;
static const uint32_t ld_2_11 = 0xe84b0000;
+static const uint32_t ld_2_12 = 0xe84c0000;
static const uint32_t ld_11_2 = 0xe9620000;
static const uint32_t ld_11_11 = 0xe96b0000;
static const uint32_t ld_12_2 = 0xe9820000;
static const uint32_t lfd_0_1 = 0xc8010000;
static const uint32_t li_0_0 = 0x38000000;
static const uint32_t li_12_0 = 0x39800000;
-static const uint32_t lis_0_0 = 0x3c000000;
+static const uint32_t lis_0 = 0x3c000000;
+static const uint32_t lis_2 = 0x3c400000;
static const uint32_t lis_11 = 0x3d600000;
static const uint32_t lis_12 = 0x3d800000;
static const uint32_t lvx_0_12_0 = 0x7c0c00ce;
targ_(targ), plt_call_stubs_(), long_branch_stubs_(),
orig_data_size_(owner->current_data_size()),
plt_size_(0), last_plt_size_(0),
- branch_size_(0), last_branch_size_(0), eh_frame_added_(false)
+ branch_size_(0), last_branch_size_(0), eh_frame_added_(false),
+ need_save_res_(false)
{
this->set_output_section(output_section);
// Add a long branch stub.
bool
add_long_branch_entry(const Powerpc_relobj<size, big_endian>*,
- unsigned int, Address, Address);
+ unsigned int, Address, Address, bool);
Address
find_long_branch_entry(const Powerpc_relobj<size, big_endian>*,
this->plt_size_ = 0;
this->long_branch_stubs_.clear();
this->branch_size_ = 0;
+ this->need_save_res_ = false;
if (all)
{
this->last_plt_size_ = 0;
Address start_off = off;
off += this->orig_data_size_;
Address my_size = this->plt_size_ + this->branch_size_;
+ if (this->need_save_res_)
+ my_size += this->targ_->savres_section()->data_size();
if (my_size != 0)
off = align_address(off, this->stub_align());
// Include original section size and alignment padding in size
class Branch_stub_ent
{
public:
- Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, Address to)
- : dest_(to), toc_base_off_(0)
+ Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj,
+ Address to, bool save_res)
+ : dest_(to), toc_base_off_(0), save_res_(save_res)
{
if (size == 64)
toc_base_off_ = obj->toc_base_offset();
Address dest_;
unsigned int toc_base_off_;
+ bool save_res_;
};
class Branch_stub_ent_hash
section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_;
// Whether .eh_frame info has been created for this stub section.
bool eh_frame_added_;
+ // Set if this stub group needs a copy of out-of-line register
+ // save/restore functions.
+ bool need_save_res_;
};
// Add a plt call stub, if we do not already have one for this
const Powerpc_relobj<size, big_endian>* object,
unsigned int r_type,
Address from,
- Address to)
+ Address to,
+ bool save_res)
{
- Branch_stub_ent ent(object, to);
+ Branch_stub_ent ent(object, to, save_res);
Address off = this->branch_size_;
if (this->long_branch_stubs_.insert(std::make_pair(ent, off)).second)
{
- unsigned int stub_size = this->branch_stub_size(to);
- this->branch_size_ = off + stub_size;
- if (size == 64 && stub_size != 4)
- this->targ_->add_branch_lookup_table(to);
+ if (save_res)
+ this->need_save_res_ = true;
+ else
+ {
+ unsigned int stub_size = this->branch_stub_size(to);
+ this->branch_size_ = off + stub_size;
+ if (size == 64 && stub_size != 4)
+ this->targ_->add_branch_lookup_table(to);
+ }
}
return this->can_reach_stub(from, off, r_type);
}
-// Find long branch stub.
+// Find long branch stub offset.
template<int size, bool big_endian>
typename Stub_table<size, big_endian>::Address
const Powerpc_relobj<size, big_endian>* object,
Address to) const
{
- Branch_stub_ent ent(object, to);
+ Branch_stub_ent ent(object, to, false);
typename Branch_stub_entries::const_iterator p
= this->long_branch_stubs_.find(ent);
- return p == this->long_branch_stubs_.end() ? invalid_address : p->second;
+ if (p == this->long_branch_stubs_.end())
+ return invalid_address;
+ if (p->first.save_res_)
+ return to - this->targ_->savres_section()->address() + this->branch_size_;
+ return p->second;
}
// A class to handle .glink.
bs != this->long_branch_stubs_.end();
++bs)
{
+ if (bs->first.save_res_)
+ continue;
p = oview + this->plt_size_ + bs->second;
Address loc = this->stub_address() + this->plt_size_ + bs->second;
Address delta = bs->first.dest_ - loc;
bs != this->long_branch_stubs_.end();
++bs)
{
+ if (bs->first.save_res_)
+ continue;
p = oview + this->plt_size_ + bs->second;
Address loc = this->stub_address() + this->plt_size_ + bs->second;
Address delta = bs->first.dest_ - loc;
}
}
}
+ if (this->need_save_res_)
+ {
+ p = oview + this->plt_size_ + this->branch_size_;
+ memcpy (p, this->targ_->savres_section()->contents(),
+ this->targ_->savres_section()->data_size());
+ }
}
// Write out .glink.
}
else
{
- write_insn<big_endian>(p, lis_0_0 + hi(indx)), p += 4;
+ write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4;
write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4;
}
}
public:
Output_data_save_res(Symbol_table* symtab);
+ const unsigned char*
+ contents() const
+ {
+ return contents_;
+ }
+
protected:
// Write to a map file.
void
case elfcpp::R_PPC64_TOC16_HA:
case elfcpp::R_PPC64_TOC16_DS:
case elfcpp::R_PPC64_TOC16_LO_DS:
- // Absolute in GOT.
- ref = Symbol::ABSOLUTE_REF;
+ ref = Symbol::RELATIVE_REF;
break;
case elfcpp::R_POWERPC_GOT_TPREL16:
case elfcpp::R_POWERPC_GNU_VTENTRY:
case elfcpp::R_PPC64_TOCSAVE:
case elfcpp::R_POWERPC_TLS:
+ case elfcpp::R_PPC64_ENTRY:
break;
case elfcpp::R_PPC64_TOC:
case elfcpp::R_POWERPC_REL16_LO:
case elfcpp::R_POWERPC_REL16_HI:
case elfcpp::R_POWERPC_REL16_HA:
+ case elfcpp::R_POWERPC_REL16DX_HA:
case elfcpp::R_POWERPC_SECTOFF:
case elfcpp::R_POWERPC_SECTOFF_LO:
case elfcpp::R_POWERPC_SECTOFF_HI:
case elfcpp::R_POWERPC_GNU_VTENTRY:
case elfcpp::R_PPC_LOCAL24PC:
case elfcpp::R_POWERPC_TLS:
+ case elfcpp::R_PPC64_ENTRY:
break;
case elfcpp::R_PPC64_TOC:
case elfcpp::R_POWERPC_REL16_LO:
case elfcpp::R_POWERPC_REL16_HI:
case elfcpp::R_POWERPC_REL16_HA:
+ case elfcpp::R_POWERPC_REL16DX_HA:
case elfcpp::R_POWERPC_SECTOFF:
case elfcpp::R_POWERPC_SECTOFF_LO:
case elfcpp::R_POWERPC_SECTOFF_HI:
typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s;
for (s = p->second.begin(); s != p->second.end(); ++s)
{
- Object* src_obj = s->first;
+ Relobj* src_obj = s->first;
unsigned int src_indx = s->second;
symtab->gc()->add_reference(src_obj, src_indx,
ppc_object, dst_indx);
void
Target_powerpc<size, big_endian>::do_gc_add_reference(
Symbol_table* symtab,
- Object* src_obj,
+ Relobj* src_obj,
unsigned int src_shndx,
- Object* dst_obj,
+ Relobj* dst_obj,
unsigned int dst_shndx,
Address dst_off) const
{
}
}
+// FNOFFSET in section SHNDX in OBJECT is the start of a function
+// compiled with -fsplit-stack. The function calls non-split-stack
+// code. Change the function to ensure it has enough stack space to
+// call some random function.
+
+template<int size, bool big_endian>
+void
+Target_powerpc<size, big_endian>::do_calls_non_split(
+ Relobj* object,
+ unsigned int shndx,
+ section_offset_type fnoffset,
+ section_size_type fnsize,
+ const unsigned char* prelocs,
+ size_t reloc_count,
+ unsigned char* view,
+ section_size_type view_size,
+ std::string* from,
+ std::string* to) const
+{
+ // 32-bit not supported.
+ if (size == 32)
+ {
+ // warn
+ Target::do_calls_non_split(object, shndx, fnoffset, fnsize,
+ prelocs, reloc_count, view, view_size,
+ from, to);
+ return;
+ }
+
+ // The function always starts with
+ // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss
+ // addis %r12,%r1,-allocate@ha
+ // addi %r12,%r12,-allocate@l
+ // cmpld %r12,%r0
+ // but note that the addis or addi may be replaced with a nop
+
+ unsigned char *entry = view + fnoffset;
+ uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry);
+
+ if ((insn & 0xffff0000) == addis_2_12)
+ {
+ /* Skip ELFv2 global entry code. */
+ entry += 8;
+ insn = elfcpp::Swap<32, big_endian>::readval(entry);
+ }
+
+ unsigned char *pinsn = entry;
+ bool ok = false;
+ const uint32_t ld_private_ss = 0xe80d8fc0;
+ if (insn == ld_private_ss)
+ {
+ int32_t allocate = 0;
+ while (1)
+ {
+ pinsn += 4;
+ insn = elfcpp::Swap<32, big_endian>::readval(pinsn);
+ if ((insn & 0xffff0000) == addis_12_1)
+ allocate += (insn & 0xffff) << 16;
+ else if ((insn & 0xffff0000) == addi_12_1
+ || (insn & 0xffff0000) == addi_12_12)
+ allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000;
+ else if (insn != nop)
+ break;
+ }
+ if (insn == cmpld_7_12_0 && pinsn == entry + 12)
+ {
+ int extra = parameters->options().split_stack_adjust_size();
+ allocate -= extra;
+ if (allocate >= 0 || extra < 0)
+ {
+ object->error(_("split-stack stack size overflow at "
+ "section %u offset %0zx"),
+ shndx, static_cast<size_t>(fnoffset));
+ return;
+ }
+ pinsn = entry + 4;
+ insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff);
+ if (insn != addis_12_1)
+ {
+ elfcpp::Swap<32, big_endian>::writeval(pinsn, insn);
+ pinsn += 4;
+ insn = addi_12_12 | (allocate & 0xffff);
+ if (insn != addi_12_12)
+ {
+ elfcpp::Swap<32, big_endian>::writeval(pinsn, insn);
+ pinsn += 4;
+ }
+ }
+ else
+ {
+ insn = addi_12_1 | (allocate & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pinsn, insn);
+ pinsn += 4;
+ }
+ if (pinsn != entry + 12)
+ elfcpp::Swap<32, big_endian>::writeval(pinsn, nop);
+
+ ok = true;
+ }
+ }
+
+ if (!ok)
+ {
+ if (!object->has_no_split_stack())
+ object->error(_("failed to match split-stack sequence at "
+ "section %u offset %0zx"),
+ shndx, static_cast<size_t>(fnoffset));
+ }
+}
+
// Scan relocations for a section.
template<int size, bool big_endian>
{
if (size == 64)
{
- Output_data_save_res<64, big_endian>* savres
- = new Output_data_save_res<64, big_endian>(symtab);
+ Output_data_save_res<size, big_endian>* savres
+ = new Output_data_save_res<size, big_endian>(symtab);
+ this->savres_section_ = savres;
layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS,
elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR,
savres, ORDER_TEXT, false);
inline bool
Target_powerpc<size, big_endian>::Relocate::relocate(
const Relocate_info<size, big_endian>* relinfo,
+ unsigned int,
Target_powerpc* target,
Output_section* os,
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,
if (view == NULL)
return true;
+ const elfcpp::Rela<size, big_endian> rela(preloc);
+ unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info());
switch (this->maybe_skip_tls_get_addr_call(r_type, gsym))
{
case Track_tls::NOT_EXPECTED:
typedef Powerpc_relocate_functions<size, big_endian> Reloc;
typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn;
+ typedef typename Reloc_types<elfcpp::SHT_RELA,
+ size, big_endian>::Reloc Reltype;
+ // Offset from start of insn to d-field reloc.
+ const int d_offset = big_endian ? 2 : 0;
+
Powerpc_relobj<size, big_endian>* const object
= static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object);
Address value = 0;
&& !parameters->options().output_is_position_independent()
&& !is_branch_reloc(r_type))
{
- unsigned int off = target->glink_section()->find_global_entry(gsym);
- if (off != (unsigned int)-1)
+ Address off = target->glink_section()->find_global_entry(gsym);
+ if (off != invalid_address)
{
value = target->glink_section()->global_entry_address() + off;
has_stub_value = true;
if (target->stub_tables().size() != 0)
stub_table = target->stub_tables()[0];
}
- gold_assert(stub_table != NULL);
- Address off;
- if (gsym != NULL)
- off = stub_table->find_plt_call_entry(object, gsym, r_type,
- rela.get_r_addend());
- else
- off = stub_table->find_plt_call_entry(object, r_sym, r_type,
- rela.get_r_addend());
- gold_assert(off != invalid_address);
- value = stub_table->stub_address() + off;
- has_stub_value = true;
+ if (stub_table != NULL)
+ {
+ Address off;
+ if (gsym != NULL)
+ off = stub_table->find_plt_call_entry(object, gsym, r_type,
+ rela.get_r_addend());
+ else
+ off = stub_table->find_plt_call_entry(object, r_sym, r_type,
+ rela.get_r_addend());
+ if (off != invalid_address)
+ {
+ value = stub_table->stub_address() + off;
+ has_stub_value = true;
+ }
+ }
}
+ // We don't care too much about bogus debug references to
+ // non-local functions, but otherwise there had better be a plt
+ // call stub or global entry stub as appropriate.
+ gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC));
}
if (r_type == elfcpp::R_POWERPC_GOT16
if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
|| r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO)
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi
if (size == 32)
if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16
|| r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO)
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
insn &= (1 << 26) - (1 << 21); // extract rt
if (size == 32)
}
else
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = nop;
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
r_type = elfcpp::R_POWERPC_NONE;
if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16
|| r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO)
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
insn &= (1 << 26) - (1 << 21); // extract rt
if (size == 32)
}
else
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = nop;
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
r_type = elfcpp::R_POWERPC_NONE;
if (r_type == elfcpp::R_POWERPC_GOT_TPREL16
|| r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO)
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
insn &= (1 << 26) - (1 << 21); // extract rt from ld
if (size == 32)
}
else
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = nop;
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
r_type = elfcpp::R_POWERPC_NONE;
Insn insn = addi_3_3;
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- view += 2 * big_endian;
+ view += d_offset;
value = psymval->value(object, rela.get_r_addend());
}
this->skip_next_tls_get_addr_call();
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
this->skip_next_tls_get_addr_call();
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- view += 2 * big_endian;
+ view += d_offset;
value = dtp_offset;
}
}
gold_assert(insn != 0);
elfcpp::Swap<32, big_endian>::writeval(iview, insn);
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- view += 2 * big_endian;
+ view += d_offset;
value = psymval->value(object, rela.get_r_addend());
}
}
case elfcpp::R_POWERPC_REL16_LO:
case elfcpp::R_POWERPC_REL16_HI:
case elfcpp::R_POWERPC_REL16_HA:
+ case elfcpp::R_POWERPC_REL16DX_HA:
case elfcpp::R_POWERPC_REL14:
case elfcpp::R_POWERPC_REL14_BRTAKEN:
case elfcpp::R_POWERPC_REL14_BRNTAKEN:
case elfcpp::R_PPC64_TOC16_HA:
if (parameters->options().toc_optimize())
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
if ((insn & ((0x3f << 26) | 0x1f << 16))
!= ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
case elfcpp::R_PPC64_TOC16_LO_DS:
if (parameters->options().toc_optimize())
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
if (!ok_lo_toc_insn(insn))
gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
}
}
break;
+
+ case elfcpp::R_PPC64_ENTRY:
+ value = (target->got_section()->output_section()->address()
+ + object->toc_base_offset());
+ if (value + 0x80008000 <= 0xffffffff
+ && !parameters->options().output_is_position_independent())
+ {
+ Insn* iview = reinterpret_cast<Insn*>(view);
+ Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview);
+ Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1);
+
+ if ((insn1 & ~0xfffc) == ld_2_12
+ && insn2 == add_2_2_12)
+ {
+ insn1 = lis_2 + ha(value);
+ elfcpp::Swap<32, big_endian>::writeval(iview, insn1);
+ insn2 = addi_2_2 + l(value);
+ elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2);
+ return true;
+ }
+ }
+ else
+ {
+ value -= address;
+ if (value + 0x80008000 <= 0xffffffff)
+ {
+ Insn* iview = reinterpret_cast<Insn*>(view);
+ Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview);
+ Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1);
+
+ if ((insn1 & ~0xfffc) == ld_2_12
+ && insn2 == add_2_2_12)
+ {
+ insn1 = addis_2_12 + ha(value);
+ elfcpp::Swap<32, big_endian>::writeval(iview, insn1);
+ insn2 = addi_2_2 + l(value);
+ elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2);
+ return true;
+ }
+ }
+ }
+ break;
+
+ case elfcpp::R_POWERPC_REL16_LO:
+ // If we are generating a non-PIC executable, edit
+ // 0: addis 2,12,.TOC.-0b@ha
+ // addi 2,2,.TOC.-0b@l
+ // used by ELFv2 global entry points to set up r2, to
+ // lis 2,.TOC.@ha
+ // addi 2,2,.TOC.@l
+ // if .TOC. is in range. */
+ if (value + address - 4 + 0x80008000 <= 0xffffffff
+ && relnum != 0
+ && preloc != NULL
+ && target->abiversion() >= 2
+ && !parameters->options().output_is_position_independent()
+ && gsym != NULL
+ && strcmp(gsym->name(), ".TOC.") == 0)
+ {
+ const int reloc_size
+ = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
+ Reltype prev_rela(preloc - reloc_size);
+ if ((prev_rela.get_r_info()
+ == elfcpp::elf_r_info<size>(r_sym,
+ elfcpp::R_POWERPC_REL16_HA))
+ && prev_rela.get_r_offset() + 4 == rela.get_r_offset()
+ && prev_rela.get_r_addend() + 4 == rela.get_r_addend())
+ {
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
+ Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1);
+ Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview);
+
+ if ((insn1 & 0xffff0000) == addis_2_12
+ && (insn2 & 0xffff0000) == addi_2_2)
+ {
+ insn1 = lis_2 + ha(value + address - 4);
+ elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1);
+ insn2 = addi_2_2 + l(value + address - 4);
+ elfcpp::Swap<32, big_endian>::writeval(iview, insn2);
+ if (relinfo->rr)
+ {
+ relinfo->rr->set_strategy(relnum - 1,
+ Relocatable_relocs::RELOC_SPECIAL);
+ relinfo->rr->set_strategy(relnum,
+ Relocatable_relocs::RELOC_SPECIAL);
+ }
+ return true;
+ }
+ }
+ }
+ break;
}
}
break;
case elfcpp::R_POWERPC_REL32:
+ case elfcpp::R_POWERPC_REL16DX_HA:
if (size == 64)
overflow = Reloc::CHECK_SIGNED;
break;
break;
}
+ Insn* iview = reinterpret_cast<Insn*>(view - d_offset);
+ Insn insn = 0;
+
if (overflow == Reloc::CHECK_LOW_INSN
|| overflow == Reloc::CHECK_HIGH_INSN)
{
- Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian);
- Insn insn = elfcpp::Swap<32, big_endian>::readval(iview);
+ insn = elfcpp::Swap<32, big_endian>::readval(iview);
if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
overflow = Reloc::CHECK_BITFIELD;
overflow = Reloc::CHECK_SIGNED;
}
+ bool maybe_dq_reloc = false;
typename Powerpc_relocate_functions<size, big_endian>::Status status
= Powerpc_relocate_functions<size, big_endian>::STATUS_OK;
switch (r_type)
if (size == 64)
{
// On ppc64 these are all ds form
- status = Reloc::addr16_ds(view, value, overflow);
+ maybe_dq_reloc = true;
break;
}
case elfcpp::R_POWERPC_ADDR16:
case elfcpp::R_POWERPC_DTPREL16_LO:
case elfcpp::R_POWERPC_GOT_TLSGD16_LO:
case elfcpp::R_POWERPC_GOT_TLSLD16_LO:
- status = Reloc::addr16(view, value, overflow);
+ if (size == 64)
+ status = Reloc::addr16(view, value, overflow);
+ else
+ maybe_dq_reloc = true;
break;
case elfcpp::R_POWERPC_UADDR16:
Reloc::addr16_ha(view, value);
break;
+ case elfcpp::R_POWERPC_REL16DX_HA:
+ status = Reloc::addr16dx_ha(view, value, overflow);
+ break;
+
case elfcpp::R_PPC64_DTPREL16_HIGHER:
if (size == 32)
// R_PPC_EMB_NADDR16_LO
case elfcpp::R_PPC64_GOT16_LO_DS:
case elfcpp::R_PPC64_SECTOFF_DS:
case elfcpp::R_PPC64_SECTOFF_LO_DS:
- status = Reloc::addr16_ds(view, value, overflow);
+ maybe_dq_reloc = true;
break;
case elfcpp::R_POWERPC_ADDR14:
r_type);
break;
}
+
+ if (maybe_dq_reloc)
+ {
+ if (insn == 0)
+ insn = elfcpp::Swap<32, big_endian>::readval(iview);
+
+ if ((insn & (0x3f << 26)) == 56u << 26 /* lq */
+ || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
+ && (insn & 3) == 1))
+ status = Reloc::addr16_dq(view, value, overflow);
+ else if (size == 64
+ || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
+ || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
+ || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
+ || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */)
+ status = Reloc::addr16_ds(view, value, overflow);
+ else
+ status = Reloc::addr16(view, value, overflow);
+ }
+
if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK
&& (has_stub_value
|| !(gsym != NULL
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*,
Address view_address,
section_size_type,
Reltype_write;
const int reloc_size
= Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
+ // Offset from start of insn to d-field reloc.
+ const int d_offset = big_endian ? 2 : 0;
Powerpc_relobj<size, big_endian>* const object
= static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object);
bool zap_next = false;
for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
{
- Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i);
+ Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i);
if (strategy == Relocatable_relocs::RELOC_DISCARD)
continue;
}
// Get the new symbol index.
+ Output_section* os = NULL;
if (r_sym < local_count)
{
switch (strategy)
unsigned int shndx =
object->local_symbol_input_shndx(r_sym, &is_ordinary);
gold_assert(is_ordinary);
- Output_section* os = object->output_section(shndx);
+ os = object->output_section(shndx);
gold_assert(os != NULL);
gold_assert(os->needs_symtab_index());
r_sym = os->symtab_index();
else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA)
{
const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym);
- addend = psymval->value(object, addend);
+ gold_assert(os != NULL);
+ addend = psymval->value(object, addend) - os->address();
}
else if (strategy == Relocatable_relocs::RELOC_SPECIAL)
{
- if (addend >= 32768)
- addend += got2_addend;
+ if (size == 32)
+ {
+ if (addend >= 32768)
+ addend += got2_addend;
+ }
+ else if (r_type == elfcpp::R_POWERPC_REL16_HA)
+ {
+ r_type = elfcpp::R_POWERPC_ADDR16_HA;
+ addend -= d_offset;
+ }
+ else if (r_type == elfcpp::R_POWERPC_REL16_LO)
+ {
+ r_type = elfcpp::R_POWERPC_ADDR16_LO;
+ addend -= d_offset + 4;
+ }
}
else
gold_unreachable();
else
{
r_type = elfcpp::R_POWERPC_NONE;
- offset -= 2 * big_endian;
+ offset -= d_offset;
}
break;
default:
else
{
r_type = elfcpp::R_POWERPC_NONE;
- offset -= 2 * big_endian;
+ offset -= d_offset;
}
}
}
else
{
r_type = elfcpp::R_POWERPC_NONE;
- offset -= 2 * big_endian;
+ offset -= d_offset;
}
}
}
break;
case tls::TLSOPT_TO_LE:
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- offset += 2 * big_endian;
+ offset += d_offset;
zap_next = true;
break;
default:
r_sym = os->symtab_index();
addend = dtp_offset;
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- offset += 2 * big_endian;
+ offset += d_offset;
zap_next = true;
}
}
if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE)
{
r_type = elfcpp::R_POWERPC_TPREL16_LO;
- offset += 2 * big_endian;
+ offset += d_offset;
}
}
}
}
else if (this->abiversion() >= 2)
{
- unsigned int off = this->glink_section()->find_global_entry(gsym);
- if (off != (unsigned int)-1)
+ Address off = this->glink_section()->find_global_entry(gsym);
+ if (off != invalid_address)
return this->glink_section()->global_entry_address() + off;
}
gold_unreachable();
}
else if (this->abiversion() >= 2)
{
- unsigned int off = this->glink_section()->find_global_entry(gsym);
- if (off != (unsigned int)-1)
+ Address off = this->glink_section()->find_global_entry(gsym);
+ if (off != invalid_address)
return this->glink_section()->global_entry_address() + off;
}
gold_unreachable();
projects / thirdparty / binutils-gdb.git / blobdiff