+// Do a TLSDESC-style General-Dynamic to Initial-Exec transition.
+
+inline void
+Target_x86_64::Relocate::tls_desc_gd_to_ie(
+ const Relocate_info<64, false>* relinfo,
+ size_t relnum,
+ Output_segment*,
+ const elfcpp::Rela<64, false>& rela,
+ unsigned int r_type,
+ elfcpp::Elf_types<64>::Elf_Addr value,
+ unsigned char* view,
+ elfcpp::Elf_types<64>::Elf_Addr address,
+ section_size_type view_size)
+{
+ if (r_type == elfcpp::R_X86_64_GOTPC32_TLSDESC)
+ {
+ // leaq foo@tlsdesc(%rip), %rax
+ // ==> movq foo@gottpoff(%rip), %rax
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, -3);
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+ tls::check_tls(relinfo, relnum, rela.get_r_offset(),
+ view[-3] == 0x48 && view[-2] == 0x8d && view[-1] == 0x05);
+ view[-2] = 0x8b;
+ const elfcpp::Elf_Xword addend = rela.get_r_addend();
+ Relocate_functions<64, false>::pcrela32(view, value, addend, address);
+ }
+ else
+ {
+ // call *foo@tlscall(%rax)
+ // ==> nop; nop
+ gold_assert(r_type == elfcpp::R_X86_64_TLSDESC_CALL);
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 2);
+ tls::check_tls(relinfo, relnum, rela.get_r_offset(),
+ view[0] == 0xff && view[1] == 0x10);
+ view[0] = 0x66;
+ view[1] = 0x90;
+ }
+}
+
+// Do a TLSDESC-style General-Dynamic to Local-Exec transition.
+
+inline void
+Target_x86_64::Relocate::tls_desc_gd_to_le(
+ const Relocate_info<64, false>* relinfo,
+ size_t relnum,
+ Output_segment* tls_segment,
+ const elfcpp::Rela<64, false>& rela,
+ unsigned int r_type,
+ elfcpp::Elf_types<64>::Elf_Addr value,
+ unsigned char* view,
+ section_size_type view_size)
+{
+ if (r_type == elfcpp::R_X86_64_GOTPC32_TLSDESC)
+ {
+ // leaq foo@tlsdesc(%rip), %rax
+ // ==> movq foo@tpoff, %rax
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, -3);
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 4);
+ tls::check_tls(relinfo, relnum, rela.get_r_offset(),
+ view[-3] == 0x48 && view[-2] == 0x8d && view[-1] == 0x05);
+ view[-2] = 0xc7;
+ view[-1] = 0xc0;
+ value -= tls_segment->memsz();
+ Relocate_functions<64, false>::rela32(view, value, 0);
+ }
+ else
+ {
+ // call *foo@tlscall(%rax)
+ // ==> nop; nop
+ gold_assert(r_type == elfcpp::R_X86_64_TLSDESC_CALL);
+ tls::check_range(relinfo, relnum, rela.get_r_offset(), view_size, 2);
+ tls::check_tls(relinfo, relnum, rela.get_r_offset(),
+ view[0] == 0xff && view[1] == 0x10);
+ view[0] = 0x66;
+ view[1] = 0x90;
+ }
+}
+