layout.cc \
mapfile.cc \
merge.cc \
- nacl.cc \
object.cc \
options.cc \
output.cc \
layout.h \
mapfile.h \
merge.h \
- nacl.h \
object.h \
options.h \
output.h \
gdb-index.$(OBJEXT) gold.$(OBJEXT) gold-threads.$(OBJEXT) \
icf.$(OBJEXT) incremental.$(OBJEXT) int_encoding.$(OBJEXT) \
layout.$(OBJEXT) mapfile.$(OBJEXT) merge.$(OBJEXT) \
- nacl.$(OBJEXT) object.$(OBJEXT) options.$(OBJEXT) \
- output.$(OBJEXT) parameters.$(OBJEXT) plugin.$(OBJEXT) \
- readsyms.$(OBJEXT) reduced_debug_output.$(OBJEXT) \
- reloc.$(OBJEXT) resolve.$(OBJEXT) script-sections.$(OBJEXT) \
- script.$(OBJEXT) stringpool.$(OBJEXT) symtab.$(OBJEXT) \
- target.$(OBJEXT) target-select.$(OBJEXT) timer.$(OBJEXT) \
- version.$(OBJEXT) workqueue.$(OBJEXT) \
- workqueue-threads.$(OBJEXT)
+ object.$(OBJEXT) options.$(OBJEXT) output.$(OBJEXT) \
+ parameters.$(OBJEXT) plugin.$(OBJEXT) readsyms.$(OBJEXT) \
+ reduced_debug_output.$(OBJEXT) reloc.$(OBJEXT) \
+ resolve.$(OBJEXT) script-sections.$(OBJEXT) script.$(OBJEXT) \
+ stringpool.$(OBJEXT) symtab.$(OBJEXT) target.$(OBJEXT) \
+ target-select.$(OBJEXT) timer.$(OBJEXT) version.$(OBJEXT) \
+ workqueue.$(OBJEXT) workqueue-threads.$(OBJEXT)
am__objects_2 =
am__objects_3 = yyscript.$(OBJEXT)
am_libgold_a_OBJECTS = $(am__objects_1) $(am__objects_2) \
layout.cc \
mapfile.cc \
merge.cc \
- nacl.cc \
object.cc \
options.cc \
output.cc \
layout.h \
mapfile.h \
merge.h \
- nacl.h \
object.h \
options.h \
output.h \
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mapfile.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/merge.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mips.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/nacl.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/object.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/options.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/output.Po@am__quote@
#include "target-select.h"
#include "tls.h"
#include "freebsd.h"
-#include "nacl.h"
#include "gc.h"
#include "icf.h"
#include "aarch64-reloc-property.h"
#include "gc.h"
#include "attributes.h"
#include "arm-reloc-property.h"
-#include "nacl.h"
namespace
{
elfcpp::Swap<16, big_endian>::writeval(wv + 1, lower_insn);
}
-// Target selector for ARM. Note this is never instantiated directly.
-// It's only used in Target_selector_arm_nacl, below.
+// Target selector for ARM.
template<bool big_endian>
class Target_selector_arm : public Target_selector
}
}
-// NaCl variant. It uses different PLT contents.
-
-template<bool big_endian>
-class Output_data_plt_arm_nacl;
-
-template<bool big_endian>
-class Target_arm_nacl : public Target_arm<big_endian>
-{
- public:
- Target_arm_nacl()
- : Target_arm<big_endian>(&arm_nacl_info)
- { }
-
- protected:
- virtual Output_data_plt_arm<big_endian>*
- do_make_data_plt(
- Layout* layout,
- Arm_output_data_got<big_endian>* got,
- Output_data_space* got_plt,
- Output_data_space* got_irelative)
- { return new Output_data_plt_arm_nacl<big_endian>(
- layout, got, got_plt, got_irelative); }
-
- private:
- static const Target::Target_info arm_nacl_info;
-};
-
-template<bool big_endian>
-const Target::Target_info Target_arm_nacl<big_endian>::arm_nacl_info =
-{
- 32, // size
- big_endian, // is_big_endian
- elfcpp::EM_ARM, // machine_code
- false, // has_make_symbol
- false, // has_resolve
- false, // has_code_fill
- true, // is_default_stack_executable
- false, // can_icf_inline_merge_sections
- '\0', // wrap_char
- "/lib/ld-nacl-arm.so.1", // dynamic_linker
- 0x20000, // default_text_segment_address
- 0x10000, // abi_pagesize (overridable by -z max-page-size)
- 0x10000, // common_pagesize (overridable by -z common-page-size)
- true, // isolate_execinstr
- 0x10000000, // rosegment_gap
- elfcpp::SHN_UNDEF, // small_common_shndx
- elfcpp::SHN_UNDEF, // large_common_shndx
- 0, // small_common_section_flags
- 0, // large_common_section_flags
- ".ARM.attributes", // attributes_section
- "aeabi", // attributes_vendor
- "_start", // entry_symbol_name
- 32, // hash_entry_size
- elfcpp::SHT_PROGBITS, // unwind_section_type
-};
-
-template<bool big_endian>
-class Output_data_plt_arm_nacl : public Output_data_plt_arm<big_endian>
-{
- public:
- Output_data_plt_arm_nacl(
- Layout* layout,
- Arm_output_data_got<big_endian>* got,
- Output_data_space* got_plt,
- Output_data_space* got_irelative)
- : Output_data_plt_arm<big_endian>(layout, 16, got, got_plt, got_irelative)
- { }
-
- protected:
- // Return the offset of the first non-reserved PLT entry.
- virtual unsigned int
- do_first_plt_entry_offset() const
- { return sizeof(first_plt_entry); }
-
- // Return the size of a PLT entry.
- virtual unsigned int
- do_get_plt_entry_size() const
- { return sizeof(plt_entry); }
-
- virtual void
- do_fill_first_plt_entry(unsigned char* pov,
- Arm_address got_address,
- Arm_address plt_address);
-
- virtual void
- do_fill_plt_entry(unsigned char* pov,
- Arm_address got_address,
- Arm_address plt_address,
- unsigned int got_offset,
- unsigned int plt_offset);
-
- private:
- inline uint32_t arm_movw_immediate(uint32_t value)
- {
- return (value & 0x00000fff) | ((value & 0x0000f000) << 4);
- }
-
- inline uint32_t arm_movt_immediate(uint32_t value)
- {
- return ((value & 0x0fff0000) >> 16) | ((value & 0xf0000000) >> 12);
- }
-
- // Template for the first PLT entry.
- static const uint32_t first_plt_entry[16];
-
- // Template for subsequent PLT entries.
- static const uint32_t plt_entry[4];
-};
-
-// The first entry in the PLT.
-template<bool big_endian>
-const uint32_t Output_data_plt_arm_nacl<big_endian>::first_plt_entry[16] =
-{
- // First bundle:
- 0xe300c000, // movw ip, #:lower16:&GOT[2]-.+8
- 0xe340c000, // movt ip, #:upper16:&GOT[2]-.+8
- 0xe08cc00f, // add ip, ip, pc
- 0xe52dc008, // str ip, [sp, #-8]!
- // Second bundle:
- 0xe3ccc103, // bic ip, ip, #0xc0000000
- 0xe59cc000, // ldr ip, [ip]
- 0xe3ccc13f, // bic ip, ip, #0xc000000f
- 0xe12fff1c, // bx ip
- // Third bundle:
- 0xe320f000, // nop
- 0xe320f000, // nop
- 0xe320f000, // nop
- // .Lplt_tail:
- 0xe50dc004, // str ip, [sp, #-4]
- // Fourth bundle:
- 0xe3ccc103, // bic ip, ip, #0xc0000000
- 0xe59cc000, // ldr ip, [ip]
- 0xe3ccc13f, // bic ip, ip, #0xc000000f
- 0xe12fff1c, // bx ip
-};
-
-template<bool big_endian>
-void
-Output_data_plt_arm_nacl<big_endian>::do_fill_first_plt_entry(
- unsigned char* pov,
- Arm_address got_address,
- Arm_address plt_address)
-{
- // Write first PLT entry. All but first two words are constants.
- const size_t num_first_plt_words = (sizeof(first_plt_entry)
- / sizeof(first_plt_entry[0]));
-
- int32_t got_displacement = got_address + 8 - (plt_address + 16);
-
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 0, first_plt_entry[0] | arm_movw_immediate (got_displacement));
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 4, first_plt_entry[1] | arm_movt_immediate (got_displacement));
-
- for (size_t i = 2; i < num_first_plt_words; ++i)
- elfcpp::Swap<32, big_endian>::writeval(pov + i * 4, first_plt_entry[i]);
-}
-
-// Subsequent entries in the PLT.
-
-template<bool big_endian>
-const uint32_t Output_data_plt_arm_nacl<big_endian>::plt_entry[4] =
-{
- 0xe300c000, // movw ip, #:lower16:&GOT[n]-.+8
- 0xe340c000, // movt ip, #:upper16:&GOT[n]-.+8
- 0xe08cc00f, // add ip, ip, pc
- 0xea000000, // b .Lplt_tail
-};
-
-template<bool big_endian>
-void
-Output_data_plt_arm_nacl<big_endian>::do_fill_plt_entry(
- unsigned char* pov,
- Arm_address got_address,
- Arm_address plt_address,
- unsigned int got_offset,
- unsigned int plt_offset)
-{
- // Calculate the displacement between the PLT slot and the
- // common tail that's part of the special initial PLT slot.
- int32_t tail_displacement = (plt_address + (11 * sizeof(uint32_t))
- - (plt_address + plt_offset
- + sizeof(plt_entry) + sizeof(uint32_t)));
- gold_assert((tail_displacement & 3) == 0);
- tail_displacement >>= 2;
-
- gold_assert ((tail_displacement & 0xff000000) == 0
- || (-tail_displacement & 0xff000000) == 0);
-
- // Calculate the displacement between the PLT slot and the entry
- // in the GOT. The offset accounts for the value produced by
- // adding to pc in the penultimate instruction of the PLT stub.
- const int32_t got_displacement = (got_address + got_offset
- - (plt_address + sizeof(plt_entry)));
-
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 0, plt_entry[0] | arm_movw_immediate (got_displacement));
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 4, plt_entry[1] | arm_movt_immediate (got_displacement));
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 8, plt_entry[2]);
- elfcpp::Swap<32, big_endian>::writeval
- (pov + 12, plt_entry[3] | (tail_displacement & 0x00ffffff));
-}
-
-// Target selectors.
-
-template<bool big_endian>
-class Target_selector_arm_nacl
- : public Target_selector_nacl<Target_selector_arm<big_endian>,
- Target_arm_nacl<big_endian> >
-{
- public:
- Target_selector_arm_nacl()
- : Target_selector_nacl<Target_selector_arm<big_endian>,
- Target_arm_nacl<big_endian> >(
- "arm",
- big_endian ? "elf32-bigarm-nacl" : "elf32-littlearm-nacl",
- big_endian ? "armelfb_nacl" : "armelf_nacl")
- { }
-};
-
-Target_selector_arm_nacl<false> target_selector_arm;
-Target_selector_arm_nacl<true> target_selector_armbe;
+Target_selector_arm<false> target_selector_arm;
+Target_selector_arm<true> target_selector_armbe;
} // End anonymous namespace.
#include "target-select.h"
#include "tls.h"
#include "freebsd.h"
-#include "nacl.h"
#include "gc.h"
namespace
*to = "__morestack_non_split";
}
-// The selector for i386 object files. Note this is never instantiated
-// directly. It's only used in Target_selector_i386_nacl, below.
+// The selector for i386 object files.
class Target_selector_i386 : public Target_selector_freebsd
{
{ return new Target_i386(); }
};
-// NaCl variant. It uses different PLT contents.
-
-class Output_data_plt_i386_nacl : public Output_data_plt_i386
-{
- public:
- Output_data_plt_i386_nacl(Layout* layout,
- Output_data_got_plt_i386* got_plt,
- Output_data_space* got_irelative)
- : Output_data_plt_i386(layout, plt_entry_size, got_plt, got_irelative)
- { }
-
- protected:
- virtual unsigned int
- do_get_plt_entry_size() const
- { return plt_entry_size; }
-
- virtual void
- do_add_eh_frame(Layout* layout)
- {
- layout->add_eh_frame_for_plt(this, plt_eh_frame_cie, plt_eh_frame_cie_size,
- plt_eh_frame_fde, plt_eh_frame_fde_size);
- }
-
- // The size of an entry in the PLT.
- static const int plt_entry_size = 64;
-
- // The .eh_frame unwind information for the PLT.
- static const int plt_eh_frame_fde_size = 32;
- static const unsigned char plt_eh_frame_fde[plt_eh_frame_fde_size];
-};
-
-class Output_data_plt_i386_nacl_exec : public Output_data_plt_i386_nacl
-{
-public:
- Output_data_plt_i386_nacl_exec(Layout* layout,
- Output_data_got_plt_i386* got_plt,
- Output_data_space* got_irelative)
- : Output_data_plt_i386_nacl(layout, got_plt, got_irelative)
- { }
-
- protected:
- virtual void
- do_fill_first_plt_entry(unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr got_address);
-
- virtual unsigned int
- do_fill_plt_entry(unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr got_address,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_rel_offset);
-
- private:
- // The first entry in the PLT for an executable.
- static const unsigned char first_plt_entry[plt_entry_size];
-
- // Other entries in the PLT for an executable.
- static const unsigned char plt_entry[plt_entry_size];
-};
-
-class Output_data_plt_i386_nacl_dyn : public Output_data_plt_i386_nacl
-{
- public:
- Output_data_plt_i386_nacl_dyn(Layout* layout,
- Output_data_got_plt_i386* got_plt,
- Output_data_space* got_irelative)
- : Output_data_plt_i386_nacl(layout, got_plt, got_irelative)
- { }
-
- protected:
- virtual void
- do_fill_first_plt_entry(unsigned char* pov, elfcpp::Elf_types<32>::Elf_Addr);
-
- virtual unsigned int
- do_fill_plt_entry(unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_rel_offset);
-
- private:
- // The first entry in the PLT for a shared object.
- static const unsigned char first_plt_entry[plt_entry_size];
-
- // Other entries in the PLT for a shared object.
- static const unsigned char plt_entry[plt_entry_size];
-};
-
-class Target_i386_nacl : public Target_i386
-{
- public:
- Target_i386_nacl()
- : Target_i386(&i386_nacl_info)
- { }
-
- protected:
- virtual Output_data_plt_i386*
- do_make_data_plt(Layout* layout,
- Output_data_got_plt_i386* got_plt,
- Output_data_space* got_irelative,
- bool dyn)
- {
- if (dyn)
- return new Output_data_plt_i386_nacl_dyn(layout, got_plt, got_irelative);
- else
- return new Output_data_plt_i386_nacl_exec(layout, got_plt, got_irelative);
- }
-
- virtual std::string
- do_code_fill(section_size_type length) const;
-
- private:
- static const Target::Target_info i386_nacl_info;
-};
-
-const Target::Target_info Target_i386_nacl::i386_nacl_info =
-{
- 32, // size
- false, // is_big_endian
- elfcpp::EM_386, // machine_code
- false, // has_make_symbol
- false, // has_resolve
- true, // has_code_fill
- true, // is_default_stack_executable
- true, // can_icf_inline_merge_sections
- '\0', // wrap_char
- "/lib/ld-nacl-x86-32.so.1", // dynamic_linker
- 0x20000, // default_text_segment_address
- 0x10000, // abi_pagesize (overridable by -z max-page-size)
- 0x10000, // common_pagesize (overridable by -z common-page-size)
- true, // isolate_execinstr
- 0x10000000, // rosegment_gap
- elfcpp::SHN_UNDEF, // small_common_shndx
- elfcpp::SHN_UNDEF, // large_common_shndx
- 0, // small_common_section_flags
- 0, // large_common_section_flags
- NULL, // attributes_section
- NULL, // attributes_vendor
- "_start", // entry_symbol_name
- 32, // hash_entry_size
- elfcpp::SHT_PROGBITS, // unwind_section_type
-};
-
-#define NACLMASK 0xe0 // 32-byte alignment mask
-
-const unsigned char
-Output_data_plt_i386_nacl_exec::first_plt_entry[plt_entry_size] =
-{
- 0xff, 0x35, // pushl contents of memory address
- 0, 0, 0, 0, // replaced with address of .got + 4
- 0x8b, 0x0d, // movl contents of address, %ecx
- 0, 0, 0, 0, // replaced with address of .got + 8
- 0x83, 0xe1, NACLMASK, // andl $NACLMASK, %ecx
- 0xff, 0xe1, // jmp *%ecx
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90
-};
-
-void
-Output_data_plt_i386_nacl_exec::do_fill_first_plt_entry(
- unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr got_address)
-{
- memcpy(pov, first_plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 2, got_address + 4);
- elfcpp::Swap<32, false>::writeval(pov + 8, got_address + 8);
-}
-
-// The first entry in the PLT for a shared object.
-
-const unsigned char
-Output_data_plt_i386_nacl_dyn::first_plt_entry[plt_entry_size] =
-{
- 0xff, 0xb3, 4, 0, 0, 0, // pushl 4(%ebx)
- 0x8b, 0x4b, 0x08, // mov 0x8(%ebx), %ecx
- 0x83, 0xe1, NACLMASK, // andl $NACLMASK, %ecx
- 0xff, 0xe1, // jmp *%ecx
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90, // nops
- 0x90, 0x90, 0x90, 0x90, 0x90 // nops
-};
-
-void
-Output_data_plt_i386_nacl_dyn::do_fill_first_plt_entry(
- unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr)
-{
- memcpy(pov, first_plt_entry, plt_entry_size);
-}
-
-// Subsequent entries in the PLT for an executable.
-
-const unsigned char
-Output_data_plt_i386_nacl_exec::plt_entry[plt_entry_size] =
-{
- 0x8b, 0x0d, // movl contents of address, %ecx */
- 0, 0, 0, 0, // replaced with address of symbol in .got
- 0x83, 0xe1, NACLMASK, // andl $NACLMASK, %ecx
- 0xff, 0xe1, // jmp *%ecx
-
- // Pad to the next 32-byte boundary with nop instructions.
- 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
-
- // Lazy GOT entries point here (32-byte aligned).
- 0x68, // pushl immediate
- 0, 0, 0, 0, // replaced with offset into relocation table
- 0xe9, // jmp relative
- 0, 0, 0, 0, // replaced with offset to start of .plt
-
- // Pad to the next 32-byte boundary with nop instructions.
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90
-};
-
-unsigned int
-Output_data_plt_i386_nacl_exec::do_fill_plt_entry(
- unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr got_address,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_rel_offset)
-{
- memcpy(pov, plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 2,
- got_address + got_offset);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 33, plt_rel_offset);
- elfcpp::Swap<32, false>::writeval(pov + 38, - (plt_offset + 38 + 4));
- return 32;
-}
-
-// Subsequent entries in the PLT for a shared object.
-
-const unsigned char
-Output_data_plt_i386_nacl_dyn::plt_entry[plt_entry_size] =
-{
- 0x8b, 0x8b, // movl offset(%ebx), %ecx
- 0, 0, 0, 0, // replaced with offset of symbol in .got
- 0x83, 0xe1, 0xe0, // andl $NACLMASK, %ecx
- 0xff, 0xe1, // jmp *%ecx
-
- // Pad to the next 32-byte boundary with nop instructions.
- 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
-
- // Lazy GOT entries point here (32-byte aligned).
- 0x68, // pushl immediate
- 0, 0, 0, 0, // replaced with offset into relocation table.
- 0xe9, // jmp relative
- 0, 0, 0, 0, // replaced with offset to start of .plt.
-
- // Pad to the next 32-byte boundary with nop instructions.
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
- 0x90, 0x90
-};
-
-unsigned int
-Output_data_plt_i386_nacl_dyn::do_fill_plt_entry(
- unsigned char* pov,
- elfcpp::Elf_types<32>::Elf_Addr,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_rel_offset)
-{
- memcpy(pov, plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 2, got_offset);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 33, plt_rel_offset);
- elfcpp::Swap<32, false>::writeval(pov + 38, - (plt_offset + 38 + 4));
- return 32;
-}
-
-const unsigned char
-Output_data_plt_i386_nacl::plt_eh_frame_fde[plt_eh_frame_fde_size] =
-{
- 0, 0, 0, 0, // Replaced with offset to .plt.
- 0, 0, 0, 0, // Replaced with size of .plt.
- 0, // Augmentation size.
- elfcpp::DW_CFA_def_cfa_offset, 8, // DW_CFA_def_cfa_offset: 8.
- elfcpp::DW_CFA_advance_loc + 6, // Advance 6 to __PLT__ + 6.
- elfcpp::DW_CFA_def_cfa_offset, 12, // DW_CFA_def_cfa_offset: 12.
- elfcpp::DW_CFA_advance_loc + 58, // Advance 58 to __PLT__ + 64.
- elfcpp::DW_CFA_def_cfa_expression, // DW_CFA_def_cfa_expression.
- 13, // Block length.
- elfcpp::DW_OP_breg4, 4, // Push %esp + 4.
- elfcpp::DW_OP_breg8, 0, // Push %eip.
- elfcpp::DW_OP_const1u, 63, // Push 0x3f.
- elfcpp::DW_OP_and, // & (%eip & 0x3f).
- elfcpp::DW_OP_const1u, 37, // Push 0x25.
- elfcpp::DW_OP_ge, // >= ((%eip & 0x3f) >= 0x25)
- elfcpp::DW_OP_lit2, // Push 2.
- elfcpp::DW_OP_shl, // << (((%eip & 0x3f) >= 0x25) << 2)
- elfcpp::DW_OP_plus, // + ((((%eip&0x3f)>=0x25)<<2)+%esp+4
- elfcpp::DW_CFA_nop, // Align to 32 bytes.
- elfcpp::DW_CFA_nop
-};
-
-// Return a string used to fill a code section with nops.
-// For NaCl, long NOPs are only valid if they do not cross
-// bundle alignment boundaries, so keep it simple with one-byte NOPs.
-std::string
-Target_i386_nacl::do_code_fill(section_size_type length) const
-{
- return std::string(length, static_cast<char>(0x90));
-}
-
-// The selector for i386-nacl object files.
-
-class Target_selector_i386_nacl
- : public Target_selector_nacl<Target_selector_i386, Target_i386_nacl>
-{
- public:
- Target_selector_i386_nacl()
- : Target_selector_nacl<Target_selector_i386,
- Target_i386_nacl>("x86-32",
- "elf32-i386-nacl",
- "elf_i386_nacl")
- { }
-};
-
-Target_selector_i386_nacl target_selector_i386;
+Target_selector_i386 target_selector_i386;
// IAMCU variant. It uses EM_IAMCU, not EM_386.
#include "errors.h"
#include "gc.h"
#include "attributes.h"
-#include "nacl.h"
namespace
{
elfcpp::SHT_PROGBITS, // unwind_section_type
};
-template<int size, bool big_endian>
-class Target_mips_nacl : public Target_mips<size, big_endian>
-{
- public:
- Target_mips_nacl()
- : Target_mips<size, big_endian>(&mips_nacl_info)
- { }
-
- private:
- static const Target::Target_info mips_nacl_info;
-};
-
-template<int size, bool big_endian>
-const Target::Target_info Target_mips_nacl<size, big_endian>::mips_nacl_info =
-{
- size, // size
- big_endian, // is_big_endian
- elfcpp::EM_MIPS, // machine_code
- true, // has_make_symbol
- false, // has_resolve
- false, // has_code_fill
- true, // is_default_stack_executable
- false, // can_icf_inline_merge_sections
- '\0', // wrap_char
- "/lib/ld.so.1", // dynamic_linker
- 0x20000, // default_text_segment_address
- 0x10000, // abi_pagesize (overridable by -z max-page-size)
- 0x10000, // common_pagesize (overridable by -z common-page-size)
- true, // isolate_execinstr
- 0x10000000, // rosegment_gap
- elfcpp::SHN_UNDEF, // small_common_shndx
- elfcpp::SHN_UNDEF, // large_common_shndx
- 0, // small_common_section_flags
- 0, // large_common_section_flags
- NULL, // attributes_section
- NULL, // attributes_vendor
- "_start", // entry_symbol_name
- 32, // hash_entry_size
- elfcpp::SHT_PROGBITS, // unwind_section_type
-};
-
-// Target selector for Mips. Note this is never instantiated directly.
-// It's only used in Target_selector_mips_nacl, below.
+// Target selector for Mips.
template<int size, bool big_endian>
class Target_selector_mips : public Target_selector
{ return new Target_mips<size, big_endian>(); }
};
-template<int size, bool big_endian>
-class Target_selector_mips_nacl
- : public Target_selector_nacl<Target_selector_mips<size, big_endian>,
- Target_mips_nacl<size, big_endian> >
-{
- public:
- Target_selector_mips_nacl()
- : Target_selector_nacl<Target_selector_mips<size, big_endian>,
- Target_mips_nacl<size, big_endian> >(
- // NaCl currently supports only MIPS32 little-endian.
- "mipsel", "elf32-tradlittlemips-nacl", "elf32-tradlittlemips-nacl")
- { }
-};
-
-Target_selector_mips_nacl<32, true> target_selector_mips32;
-Target_selector_mips_nacl<32, false> target_selector_mips32el;
-Target_selector_mips_nacl<64, true> target_selector_mips64;
-Target_selector_mips_nacl<64, false> target_selector_mips64el;
+Target_selector_mips<32, true> target_selector_mips32;
+Target_selector_mips<32, false> target_selector_mips32el;
+Target_selector_mips<64, true> target_selector_mips64;
+Target_selector_mips<64, false> target_selector_mips64el;
} // End anonymous namespace.
+++ /dev/null
-// nacl.cc -- Native Client support for gold
-
-// Copyright (C) 2012-2025 Free Software Foundation, Inc.
-
-// This file is part of gold.
-
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
-// MA 02110-1301, USA.
-
-#include "gold.h"
-
-#include <cstdio>
-#include "libiberty.h"
-
-#include "nacl.h"
-#include "elfcpp.h"
-
-namespace gold
-{
-
-// Copied from object.cc:Object::error.
-void
-Sniff_file::error(const char* format, ...) const
-{
- va_list args;
- va_start(args, format);
- char* buf = NULL;
- if (vasprintf(&buf, format, args) < 0)
- gold_nomem();
- va_end(args);
- gold_error(_("%s: %s"), this->file_.filename().c_str(), buf);
- free(buf);
-}
-
-} // end namespace gold
+++ /dev/null
-// nacl.h -- Native Client support for gold -*- C++ -*-
-
-// Copyright (C) 2012-2025 Free Software Foundation, Inc.
-
-// This file is part of gold.
-
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
-// MA 02110-1301, USA.
-
-#include "elfcpp_file.h"
-#include "fileread.h"
-#include "layout.h"
-#include "target-select.h"
-#include "target.h"
-
-#ifndef GOLD_NACL_H
-#define GOLD_NACL_H
-
-namespace gold
-{
-
-class Sniff_file
-{
- public:
- Sniff_file(Input_file* input_file, off_t offset)
- : file_(input_file->file()), offset_(offset)
- { }
-
- class Location
- {
- public:
- Location(off_t file_offset, off_t data_size)
- : offset_(file_offset), size_(data_size)
- { }
-
- inline off_t offset() const
- { return this->offset_; }
-
- inline section_size_type size() const
- { return this->size_; }
-
- private:
- off_t offset_;
- section_size_type size_;
- };
-
- class View
- {
- public:
- View(File_read& file, off_t file_offset, off_t data_size)
- : data_(file.get_view(file_offset, 0, data_size, true, false))
- { }
-
- const unsigned char* data()
- { return this->data_; }
-
- private:
- const unsigned char* data_;
- };
-
- View view(off_t file_offset, off_t data_size)
- {
- return View(this->file_, this->offset_ + file_offset, data_size);
- }
-
- View view(Location loc)
- {
- return this->view(loc.offset(), loc.size());
- }
-
- // Report an error.
- void
- error(const char* format, ...) const ATTRIBUTE_PRINTF_2;
-
- private:
- File_read& file_;
- off_t offset_;
-};
-
-
-template<class base_selector, class nacl_target>
-class Target_selector_nacl : public base_selector
-{
- public:
- Target_selector_nacl(const char* nacl_abi_name,
- const char* bfd_name, const char* emulation)
- : base_selector(), is_nacl_(false), nacl_abi_name_(nacl_abi_name),
- bfd_name_(bfd_name), emulation_(emulation)
- { }
-
- protected:
- virtual Target*
- do_instantiate_target()
- {
- if (this->is_nacl_)
- return new nacl_target();
- return this->base_selector::do_instantiate_target();
- }
-
- virtual Target*
- do_recognize(Input_file* file, off_t offset,
- int machine, int osabi, int abiversion)
- {
- this->is_nacl_ = file != NULL && this->recognize_nacl_file(file, offset);
- if (this->is_nacl_)
- return this->instantiate_target();
- return this->base_selector::do_recognize(file, offset,
- machine, osabi, abiversion);
- }
-
- virtual Target*
- do_recognize_by_bfd_name(const char* name)
- {
- gold_assert(this->bfd_name_ != NULL);
- this->is_nacl_ = strcmp(name, this->bfd_name_) == 0;
- if (this->is_nacl_)
- return this->instantiate_target();
- return this->base_selector::do_recognize_by_bfd_name(name);
- }
-
- virtual void
- do_supported_bfd_names(std::vector<const char*>* names)
- {
- gold_assert(this->bfd_name_ != NULL);
- this->base_selector::do_supported_bfd_names(names);
- names->push_back(this->bfd_name_);
- }
-
- virtual void
- do_supported_emulations(std::vector<const char*>* emulations)
- {
- gold_assert(this->emulation_ != NULL);
- this->base_selector::do_supported_emulations(emulations);
- emulations->push_back(this->emulation_);
- }
-
- virtual const char*
- do_target_bfd_name(const Target* target)
- {
- return (!this->is_our_target(target)
- ? NULL
- : (this->is_nacl_
- ? this->bfd_name_
- : base_selector::do_target_bfd_name(target)));
- }
-
- private:
- bool
- recognize_nacl_file(Input_file* input_file, off_t offset)
- {
- if (this->is_big_endian())
- {
-#if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
-# ifdef HAVE_TARGET_32_BIG
- if (this->get_size() == 32)
- return do_recognize_nacl_file<32, true>(input_file, offset);
-# endif
-# ifdef HAVE_TARGET_64_BIG
- if (this->get_size() == 64)
- return do_recognize_nacl_file<64, true>(input_file, offset);
-# endif
-#endif
- gold_unreachable();
- }
- else
- {
-#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
-# ifdef HAVE_TARGET_32_LITTLE
- if (this->get_size() == 32)
- return do_recognize_nacl_file<32, false>(input_file, offset);
-# endif
-# ifdef HAVE_TARGET_64_LITTLE
- if (this->get_size() == 64)
- return do_recognize_nacl_file<64, false>(input_file, offset);
-# endif
-#endif
- gold_unreachable();
- }
- }
-
- template<int size, bool big_endian>
- bool
- do_recognize_nacl_file(Input_file* input_file, off_t offset)
- {
- Sniff_file file(input_file, offset);
- elfcpp::Elf_file<size, big_endian, Sniff_file> elf_file(&file);
- const unsigned int shnum = elf_file.shnum();
- for (unsigned int shndx = 1; shndx < shnum; ++shndx)
- {
- if (elf_file.section_type(shndx) == elfcpp::SHT_NOTE)
- {
- Sniff_file::Location loc = elf_file.section_contents(shndx);
- if (loc.size() < (3 * 4
- + align_address(sizeof "NaCl", 4)
- + align_address(nacl_abi_name_.size() + 1, 4)))
- continue;
- Sniff_file::View view(file.view(loc));
- const unsigned char* note_data = view.data();
- if ((elfcpp::Swap<32, big_endian>::readval(note_data + 0)
- == sizeof "NaCl")
- && (elfcpp::Swap<32, big_endian>::readval(note_data + 4)
- == nacl_abi_name_.size() + 1)
- && (elfcpp::Swap<32, big_endian>::readval(note_data + 8)
- == elfcpp::NT_VERSION))
- {
- const unsigned char* name = note_data + 12;
- const unsigned char* desc = (name
- + align_address(sizeof "NaCl", 4));
- if (memcmp(name, "NaCl", sizeof "NaCl") == 0
- && memcmp(desc, nacl_abi_name_.c_str(),
- nacl_abi_name_.size() + 1) == 0)
- return true;
- }
- }
- }
- return false;
- }
-
- // Whether we decided this was the NaCl target variant.
- bool is_nacl_;
- // The string found in the NaCl ABI note.
- std::string nacl_abi_name_;
- // BFD name of NaCl target, for compatibility.
- const char* const bfd_name_;
- // GNU linker emulation for this NaCl target, for compatibility.
- const char* const emulation_;
-};
-
-} // end namespace gold
-
-#endif // !defined(GOLD_NACL_H)
merge.cc
merge.h
mips.cc
-nacl.cc
-nacl.h
object.cc
object.h
options.cc
#include "target-select.h"
#include "tls.h"
#include "freebsd.h"
-#include "nacl.h"
#include "gc.h"
#include "icf.h"
*to = "__morestack_non_split";
}
-// The selector for x86_64 object files. Note this is never instantiated
-// directly. It's only used in Target_selector_x86_64_nacl, below.
+// The selector for x86_64 object files.
template<int size>
class Target_selector_x86_64 : public Target_selector_freebsd
};
-// NaCl variant. It uses different PLT contents.
-
-template<int size>
-class Output_data_plt_x86_64_nacl : public Output_data_plt_x86_64<size>
-{
- public:
- Output_data_plt_x86_64_nacl(Layout* layout,
- Output_data_got<64, false>* got,
- Output_data_got_plt_x86_64* got_plt,
- Output_data_space* got_irelative)
- : Output_data_plt_x86_64<size>(layout, plt_entry_size,
- got, got_plt, got_irelative)
- { }
-
- Output_data_plt_x86_64_nacl(Layout* layout,
- Output_data_got<64, false>* got,
- Output_data_got_plt_x86_64* got_plt,
- Output_data_space* got_irelative,
- unsigned int plt_count)
- : Output_data_plt_x86_64<size>(layout, plt_entry_size,
- got, got_plt, got_irelative,
- plt_count)
- { }
-
- protected:
- virtual unsigned int
- do_get_plt_entry_size() const
- { return plt_entry_size; }
-
- virtual void
- do_add_eh_frame(Layout* layout)
- {
- layout->add_eh_frame_for_plt(this,
- this->plt_eh_frame_cie,
- this->plt_eh_frame_cie_size,
- plt_eh_frame_fde,
- plt_eh_frame_fde_size);
- }
-
- virtual void
- do_fill_first_plt_entry(unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_addr,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_addr);
-
- virtual unsigned int
- do_fill_plt_entry(unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_address,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_index);
-
- virtual void
- do_fill_tlsdesc_entry(unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_address,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
- typename elfcpp::Elf_types<size>::Elf_Addr got_base,
- unsigned int tlsdesc_got_offset,
- unsigned int plt_offset);
-
- private:
- // The size of an entry in the PLT.
- static const int plt_entry_size = 64;
-
- // The first entry in the PLT.
- static const unsigned char first_plt_entry[plt_entry_size];
-
- // Other entries in the PLT for an executable.
- static const unsigned char plt_entry[plt_entry_size];
-
- // The reserved TLSDESC entry in the PLT for an executable.
- static const unsigned char tlsdesc_plt_entry[plt_entry_size];
-
- // The .eh_frame unwind information for the PLT.
- static const int plt_eh_frame_fde_size = 32;
- static const unsigned char plt_eh_frame_fde[plt_eh_frame_fde_size];
-};
-
-template<int size>
-class Target_x86_64_nacl : public Target_x86_64<size>
-{
- public:
- Target_x86_64_nacl()
- : Target_x86_64<size>(&x86_64_nacl_info)
- { }
-
- virtual Output_data_plt_x86_64<size>*
- do_make_data_plt(Layout* layout,
- Output_data_got<64, false>* got,
- Output_data_got_plt_x86_64* got_plt,
- Output_data_space* got_irelative)
- {
- return new Output_data_plt_x86_64_nacl<size>(layout, got, got_plt,
- got_irelative);
- }
-
- virtual Output_data_plt_x86_64<size>*
- do_make_data_plt(Layout* layout,
- Output_data_got<64, false>* got,
- Output_data_got_plt_x86_64* got_plt,
- Output_data_space* got_irelative,
- unsigned int plt_count)
- {
- return new Output_data_plt_x86_64_nacl<size>(layout, got, got_plt,
- got_irelative,
- plt_count);
- }
-
- virtual std::string
- do_code_fill(section_size_type length) const;
-
- private:
- static const Target::Target_info x86_64_nacl_info;
-};
-
-template<>
-const Target::Target_info Target_x86_64_nacl<64>::x86_64_nacl_info =
-{
- 64, // size
- false, // is_big_endian
- elfcpp::EM_X86_64, // machine_code
- false, // has_make_symbol
- false, // has_resolve
- true, // has_code_fill
- true, // is_default_stack_executable
- true, // can_icf_inline_merge_sections
- '\0', // wrap_char
- "/lib64/ld-nacl-x86-64.so.1", // dynamic_linker
- 0x20000, // default_text_segment_address
- 0x10000, // abi_pagesize (overridable by -z max-page-size)
- 0x10000, // common_pagesize (overridable by -z common-page-size)
- true, // isolate_execinstr
- 0x10000000, // rosegment_gap
- elfcpp::SHN_UNDEF, // small_common_shndx
- elfcpp::SHN_X86_64_LCOMMON, // large_common_shndx
- 0, // small_common_section_flags
- elfcpp::SHF_X86_64_LARGE, // large_common_section_flags
- NULL, // attributes_section
- NULL, // attributes_vendor
- "_start", // entry_symbol_name
- 32, // hash_entry_size
- elfcpp::SHT_X86_64_UNWIND, // unwind_section_type
-};
-
-template<>
-const Target::Target_info Target_x86_64_nacl<32>::x86_64_nacl_info =
-{
- 32, // size
- false, // is_big_endian
- elfcpp::EM_X86_64, // machine_code
- false, // has_make_symbol
- false, // has_resolve
- true, // has_code_fill
- true, // is_default_stack_executable
- true, // can_icf_inline_merge_sections
- '\0', // wrap_char
- "/lib/ld-nacl-x86-64.so.1", // dynamic_linker
- 0x20000, // default_text_segment_address
- 0x10000, // abi_pagesize (overridable by -z max-page-size)
- 0x10000, // common_pagesize (overridable by -z common-page-size)
- true, // isolate_execinstr
- 0x10000000, // rosegment_gap
- elfcpp::SHN_UNDEF, // small_common_shndx
- elfcpp::SHN_X86_64_LCOMMON, // large_common_shndx
- 0, // small_common_section_flags
- elfcpp::SHF_X86_64_LARGE, // large_common_section_flags
- NULL, // attributes_section
- NULL, // attributes_vendor
- "_start", // entry_symbol_name
- 32, // hash_entry_size
- elfcpp::SHT_X86_64_UNWIND, // unwind_section_type
-};
-
-#define NACLMASK 0xe0 // 32-byte alignment mask.
-
-// The first entry in the PLT.
-
-template<int size>
-const unsigned char
-Output_data_plt_x86_64_nacl<size>::first_plt_entry[plt_entry_size] =
-{
- 0xff, 0x35, // pushq contents of memory address
- 0, 0, 0, 0, // replaced with address of .got + 8
- 0x4c, 0x8b, 0x1d, // mov GOT+16(%rip), %r11
- 0, 0, 0, 0, // replaced with address of .got + 16
- 0x41, 0x83, 0xe3, NACLMASK, // and $-32, %r11d
- 0x4d, 0x01, 0xfb, // add %r15, %r11
- 0x41, 0xff, 0xe3, // jmpq *%r11
-
- // 9-byte nop sequence to pad out to the next 32-byte boundary.
- 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw 0x0(%rax,%rax,1)
-
- // 32 bytes of nop to pad out to the standard size
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
- 0x66, // excess data32 prefix
- 0x90 // nop
-};
-
-template<int size>
-void
-Output_data_plt_x86_64_nacl<size>::do_fill_first_plt_entry(
- unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_address,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_address)
-{
- memcpy(pov, first_plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 2,
- (got_address + 8
- - (plt_address + 2 + 4)));
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 9,
- (got_address + 16
- - (plt_address + 9 + 4)));
-}
-
-// Subsequent entries in the PLT.
-
-template<int size>
-const unsigned char
-Output_data_plt_x86_64_nacl<size>::plt_entry[plt_entry_size] =
-{
- 0x4c, 0x8b, 0x1d, // mov name@GOTPCREL(%rip),%r11
- 0, 0, 0, 0, // replaced with address of symbol in .got
- 0x41, 0x83, 0xe3, NACLMASK, // and $-32, %r11d
- 0x4d, 0x01, 0xfb, // add %r15, %r11
- 0x41, 0xff, 0xe3, // jmpq *%r11
-
- // 15-byte nop sequence to pad out to the next 32-byte boundary.
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
-
- // Lazy GOT entries point here (32-byte aligned).
- 0x68, // pushq immediate
- 0, 0, 0, 0, // replaced with index into relocation table
- 0xe9, // jmp relative
- 0, 0, 0, 0, // replaced with offset to start of .plt0
-
- // 22 bytes of nop to pad out to the standard size.
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
- 0x0f, 0x1f, 0x80, 0, 0, 0, 0, // nopl 0x0(%rax)
-};
-
-template<int size>
-unsigned int
-Output_data_plt_x86_64_nacl<size>::do_fill_plt_entry(
- unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_address,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
- unsigned int got_offset,
- unsigned int plt_offset,
- unsigned int plt_index)
-{
- memcpy(pov, plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 3,
- (got_address + got_offset
- - (plt_address + plt_offset
- + 3 + 4)));
-
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 33, plt_index);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 38,
- - (plt_offset + 38 + 4));
-
- return 32;
-}
-
-// The reserved TLSDESC entry in the PLT.
-
-template<int size>
-const unsigned char
-Output_data_plt_x86_64_nacl<size>::tlsdesc_plt_entry[plt_entry_size] =
-{
- 0xff, 0x35, // pushq x(%rip)
- 0, 0, 0, 0, // replaced with address of linkmap GOT entry (at PLTGOT + 8)
- 0x4c, 0x8b, 0x1d, // mov y(%rip),%r11
- 0, 0, 0, 0, // replaced with offset of reserved TLSDESC_GOT entry
- 0x41, 0x83, 0xe3, NACLMASK, // and $-32, %r11d
- 0x4d, 0x01, 0xfb, // add %r15, %r11
- 0x41, 0xff, 0xe3, // jmpq *%r11
-
- // 41 bytes of nop to pad out to the standard size.
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
- 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
- 0x66, 0x66, // excess data32 prefixes
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, // nopw %cs:0x0(%rax,%rax,1)
-};
-
-template<int size>
-void
-Output_data_plt_x86_64_nacl<size>::do_fill_tlsdesc_entry(
- unsigned char* pov,
- typename elfcpp::Elf_types<size>::Elf_Addr got_address,
- typename elfcpp::Elf_types<size>::Elf_Addr plt_address,
- typename elfcpp::Elf_types<size>::Elf_Addr got_base,
- unsigned int tlsdesc_got_offset,
- unsigned int plt_offset)
-{
- memcpy(pov, tlsdesc_plt_entry, plt_entry_size);
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 2,
- (got_address + 8
- - (plt_address + plt_offset
- + 2 + 4)));
- elfcpp::Swap_unaligned<32, false>::writeval(pov + 9,
- (got_base
- + tlsdesc_got_offset
- - (plt_address + plt_offset
- + 9 + 4)));
-}
-
-// The .eh_frame unwind information for the PLT.
-
-template<int size>
-const unsigned char
-Output_data_plt_x86_64_nacl<size>::plt_eh_frame_fde[plt_eh_frame_fde_size] =
-{
- 0, 0, 0, 0, // Replaced with offset to .plt.
- 0, 0, 0, 0, // Replaced with size of .plt.
- 0, // Augmentation size.
- elfcpp::DW_CFA_def_cfa_offset, 16, // DW_CFA_def_cfa_offset: 16.
- elfcpp::DW_CFA_advance_loc + 6, // Advance 6 to __PLT__ + 6.
- elfcpp::DW_CFA_def_cfa_offset, 24, // DW_CFA_def_cfa_offset: 24.
- elfcpp::DW_CFA_advance_loc + 58, // Advance 58 to __PLT__ + 64.
- elfcpp::DW_CFA_def_cfa_expression, // DW_CFA_def_cfa_expression.
- 13, // Block length.
- elfcpp::DW_OP_breg7, 8, // Push %rsp + 8.
- elfcpp::DW_OP_breg16, 0, // Push %rip.
- elfcpp::DW_OP_const1u, 63, // Push 0x3f.
- elfcpp::DW_OP_and, // & (%rip & 0x3f).
- elfcpp::DW_OP_const1u, 37, // Push 0x25.
- elfcpp::DW_OP_ge, // >= ((%rip & 0x3f) >= 0x25)
- elfcpp::DW_OP_lit3, // Push 3.
- elfcpp::DW_OP_shl, // << (((%rip & 0x3f) >= 0x25) << 3)
- elfcpp::DW_OP_plus, // + ((((%rip&0x3f)>=0x25)<<3)+%rsp+8
- elfcpp::DW_CFA_nop, // Align to 32 bytes.
- elfcpp::DW_CFA_nop
-};
-
-// Return a string used to fill a code section with nops.
-// For NaCl, long NOPs are only valid if they do not cross
-// bundle alignment boundaries, so keep it simple with one-byte NOPs.
-template<int size>
-std::string
-Target_x86_64_nacl<size>::do_code_fill(section_size_type length) const
-{
- return std::string(length, static_cast<char>(0x90));
-}
-
-// The selector for x86_64-nacl object files.
-
-template<int size>
-class Target_selector_x86_64_nacl
- : public Target_selector_nacl<Target_selector_x86_64<size>,
- Target_x86_64_nacl<size> >
-{
- public:
- Target_selector_x86_64_nacl()
- : Target_selector_nacl<Target_selector_x86_64<size>,
- Target_x86_64_nacl<size> >("x86-64",
- size == 64
- ? "elf64-x86-64-nacl"
- : "elf32-x86-64-nacl",
- size == 64
- ? "elf_x86_64_nacl"
- : "elf32_x86_64_nacl")
- { }
-};
-
-Target_selector_x86_64_nacl<64> target_selector_x86_64;
-Target_selector_x86_64_nacl<32> target_selector_x32;
+Target_selector_x86_64<64> target_selector_x86_64;
+Target_selector_x86_64<32> target_selector_x32;
} // End anonymous namespace.
projects / thirdparty / binutils-gdb.git / commitdiff
