67a4f2b710
Introduce TLS descriptors for i386 and x86_64. * common.h (DT_TLSDESC_GOT, DT_TLSDESC_PLT): New. * i386.h (R_386_TLS_GOTDESC, R_386_TLS_DESC_CALL, R_386_TLS_DESC): New. * x86-64.h (R_X86_64_GOTPC32_TLSDESC, R_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC): New. bfd/ChangeLog: Introduce TLS descriptors for i386 and x86_64. * reloc.c (BFD_RELOC_386_TLS_GOTDESC, BFD_RELOC_386_TLS_DESC, BFD_RELOC_386_TLS_DESC_CALL, BFD_RELOC_X86_64_GOTPC32_TLSDESC, BFD_RELOC_X86_64_TLSDESC, BFD_RELOC_X86_64_TLSDESC_CALL): New. * libbfd.h, bfd-in2.h: Rebuilt. * elf32-i386.c (elf_howto_table): New relocations. (R_386_tls): Adjust. (elf_i386_reloc_type_lookup): Map new relocations. (GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P): New macros. (GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): New macros. (struct elf_i386_link_hash_entry): Add tlsdesc_got field. (struct elf_i386_obj_tdata): Add local_tlsdesc_gotent field. (elf_i386_local_tlsdesc_gotent): New macro. (struct elf_i386_link_hash_table): Add sgotplt_jump_table_size. (elf_i386_compute_jump_table_size): New macro. (link_hash_newfunc): Initialize tlsdesc_got. (elf_i386_link_hash_table_create): Set sgotplt_jump_table_size. (elf_i386_tls_transition): Handle R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL. (elf_i386_check_relocs): Likewise. Allocate space for local_tlsdesc_gotent. (elf_i386_gc_sweep_hook): Handle R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL. (allocate_dynrelocs): Count function PLT relocations. Reserve space for TLS descriptors and relocations. (elf_i386_size_dynamic_sections): Reserve space for TLS descriptors and relocations. Set up sgotplt_jump_table_size. Don't zero reloc_count in srelplt. (elf_i386_always_size_sections): New. Set up _TLS_MODULE_BASE_. (elf_i386_relocate_section): Handle R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL. (elf_i386_finish_dynamic_symbol): Use GOT_TLS_GD_ANY_P. (elf_backend_always_size_sections): Define. * elf64-x86-64.c (x86_64_elf_howto): Add R_X86_64_GOTPC32_TLSDESC, R_X86_64_TLSDESC, R_X86_64_TLSDESC_CALL. (R_X86_64_standard): Adjust. (x86_64_reloc_map): Map new relocs. (elf64_x86_64_rtype_to_howto): New, split out of... (elf64_x86_64_info_to_howto): ... this function, and... (elf64_x86_64_reloc_type_lookup): ... use it to map elf_reloc_val. (GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P): New macros. (GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): New macros. (struct elf64_x86_64_link_hash_entry): Add tlsdesc_got field. (struct elf64_x86_64_obj_tdata): Add local_tlsdesc_gotent field. (elf64_x86_64_local_tlsdesc_gotent): New macro. (struct elf64_x86_64_link_hash_table): Add tlsdesc_plt, tlsdesc_got and sgotplt_jump_table_size fields. (elf64_x86_64_compute_jump_table_size): New macro. (link_hash_newfunc): Initialize tlsdesc_got. (elf64_x86_64_link_hash_table_create): Initialize new fields. (elf64_x86_64_tls_transition): Handle R_X86_64_GOTPC32_TLSDESC and R_X86_64_TLSDESC_CALL. (elf64_x86_64_check_relocs): Likewise. Allocate space for local_tlsdesc_gotent. (elf64_x86_64_gc_sweep_hook): Handle R_X86_64_GOTPC32_TLSDESC and R_X86_64_TLSDESC_CALL. (allocate_dynrelocs): Count function PLT relocations. Reserve space for TLS descriptors and relocations. (elf64_x86_64_size_dynamic_sections): Reserve space for TLS descriptors and relocations. Set up sgotplt_jump_table_size, tlsdesc_plt and tlsdesc_got. Make room for them. Don't zero reloc_count in srelplt. Add dynamic entries for DT_TLSDESC_PLT and DT_TLSDESC_GOT. (elf64_x86_64_always_size_sections): New. Set up _TLS_MODULE_BASE_. (elf64_x86_64_relocate_section): Handle R_386_TLS_GOTDESC and R_386_TLS_DESC_CALL. (elf64_x86_64_finish_dynamic_symbol): Use GOT_TLS_GD_ANY_P. (elf64_x86_64_finish_dynamic_sections): Set DT_TLSDESC_PLT and DT_TLSDESC_GOT. Set up TLS descriptor lazy resolver PLT entry. (elf_backend_always_size_sections): Define. binutils/ChangeLog: Introduce TLS descriptors for i386 and x86_64. * readelf.c (get_dynamic_type): Handle DT_TLSDESC_GOT and DT_TLSDESC_PLT. gas/ChangeLog: Introduce TLS descriptors for i386 and x86_64. * config/tc-i386.c (tc_i386_fix_adjustable): Handle BFD_RELOC_386_TLS_GOTDESC, BFD_RELOC_386_TLS_DESC_CALL, BFD_RELOC_X86_64_GOTPC32_TLSDESC, BFD_RELOC_X86_64_TLSDESC_CALL. (optimize_disp): Emit fix up for BFD_RELOC_386_TLS_DESC_CALL and BFD_RELOC_X86_64_TLSDESC_CALL immediately, and clear the displacement bits. (build_modrm_byte): Set up zero modrm for TLS desc calls. (lex_got): Handle @tlsdesc and @tlscall. (md_apply_fix, tc_gen_reloc): Handle the new relocations. ld/testsuite/ChangeLog: Introduce TLS descriptors for i386 and x86_64. * ld-i386/i386.exp: Run on x86_64-*-linux* and amd64-*-linux*. Add new tests. * ld-i386/pcrel16.d: Add -melf_i386. * ld-i386/pcrel8.d: Likewise. * ld-i386/tlsbindesc.dd: New. * ld-i386/tlsbindesc.rd: New. * ld-i386/tlsbindesc.s: New. * ld-i386/tlsbindesc.sd: New. * ld-i386/tlsbindesc.td: New. * ld-i386/tlsdesc.dd: New. * ld-i386/tlsdesc.rd: New. * ld-i386/tlsdesc.s: New. * ld-i386/tlsdesc.sd: New. * ld-i386/tlsdesc.td: New. * ld-i386/tlsgdesc.dd: New. * ld-i386/tlsgdesc.rd: New. * ld-i386/tlsgdesc.s: New. * ld-x86-64/x86-64.exp: Run new tests. * ld-x86-64/tlsbindesc.dd: New. * ld-x86-64/tlsbindesc.rd: New. * ld-x86-64/tlsbindesc.s: New. * ld-x86-64/tlsbindesc.sd: New. * ld-x86-64/tlsbindesc.td: New. * ld-x86-64/tlsdesc.dd: New. * ld-x86-64/tlsdesc.pd: New. * ld-x86-64/tlsdesc.rd: New. * ld-x86-64/tlsdesc.s: New. * ld-x86-64/tlsdesc.sd: New. * ld-x86-64/tlsdesc.td: New. * ld-x86-64/tlsgdesc.dd: New. * ld-x86-64/tlsgdesc.rd: New. * ld-x86-64/tlsgdesc.s: New.
204 lines
6.9 KiB
Text
204 lines
6.9 KiB
Text
#source: tlsdesc.s
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#source: tlspic2.s
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#as: --64
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#ld: -shared -melf_x86_64
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#objdump: -drj.text
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#target: x86_64-*-*
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.*: +file format elf64-x86-64
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Disassembly of section .text:
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0+[0-9a-f]+ <fn1>:
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+[0-9a-f]+: 55[ ]+push %rbp
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+[0-9a-f]+: 48 89 e5[ ]+mov %rsp,%rbp
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD
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+[0-9a-f]+: 48 8d 05 89 03 10 00[ ]+lea 1049481\(%rip\),%rax +# 101398 <.*>
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# -> R_X86_64_TLSDESC sg1
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+[0-9a-f]+: ff 10[ ]+callq \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE because variable is referenced through IE too
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+[0-9a-f]+: 48 8b 05 1c 03 10 00[ ]+mov 1049372\(%rip\),%rax +# 101338 <.*>
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# -> R_X86_64_TPOFF64 sg2
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against local variable
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+[0-9a-f]+: 48 8d 05 3f 03 10 00[ ]+lea 1049407\(%rip\),%rax +# 101368 <.*>
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# -> R_X86_64_TLSDESC [0 0x2000000000000000]
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+[0-9a-f]+: ff 10[ ]+callq \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 d2 02 10 00[ ]+mov 1049298\(%rip\),%rax +# 101308 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x24
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against hidden and local variable
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+[0-9a-f]+: 48 8d 05 65 03 10 00[ ]+lea 1049445\(%rip\),%rax +# 1013a8 <.*>
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# -> R_X86_64_TLSDESC [0 0x4000000000000000]
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+[0-9a-f]+: ff 10[ ]+callq \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against hidden and local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 f0 02 10 00[ ]+mov 1049328\(%rip\),%rax +# 101340 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x44
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against hidden but not local variable
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+[0-9a-f]+: 48 8d 05 1b 03 10 00[ ]+lea 1049371\(%rip\),%rax +# 101378 <.*>
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# -> R_X86_64_TLSDESC [0 0x6000000000000000]
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+[0-9a-f]+: ff 10[ ]+callq \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against hidden but not local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 ae 02 10 00[ ]+mov 1049262\(%rip\),%rax +# 101318 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x64
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD
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+[0-9a-f]+: 48 8d 05 11 03 10 00[ ]+lea 1049361\(%rip\),%rax +# 101388 <.*>
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# -> R_X86_64_TLSDESC [0 0x000000000000000]
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+[0-9a-f]+: ff 10[ ]+callq \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 90 20 00 00 00[ ]+lea 0x20\(%rax\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 4c 8d 88 26 00 00 00[ ]+lea 0x26\(%rax\),%r9
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD against hidden and local variables
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+[0-9a-f]+: 48 8d 90 40 00 00 00[ ]+lea 0x40\(%rax\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 88 47 00 00 00[ ]+lea 0x47\(%rax\),%rcx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD against hidden but not local variables
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+[0-9a-f]+: 4c 8d a0 60 00 00 00[ ]+lea 0x60\(%rax\),%r12
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 88 65 00 00 00[ ]+lea 0x65\(%rax\),%rcx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against global var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d 71 02 10 00[ ]+add 1049201\(%rip\),%rcx +# 101338 <.*>
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# -> R_X86_64_TPOFF64 sg2
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against local var
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+[0-9a-f]+: 64 4c 8b 34 25 00 00[ ]+mov %fs:0x0,%r14
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 4c 03 35 2b 02 10 00[ ]+add 1049131\(%rip\),%r14 +# 101308 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x24
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden and local var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d 4d 02 10 00[ ]+add 1049165\(%rip\),%rcx +# 101340 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x44
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden but not local var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d 0f 02 10 00[ ]+add 1049103\(%rip\),%rcx +# 101318 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x64
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# Direct access through %fs
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# IE against global var
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+[0-9a-f]+: 48 8b 0d 0c 02 10 00[ ]+mov 1049100\(%rip\),%rcx +# 101320 <.*>
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# -> R_X86_64_TPOFF64 sg5
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against local var
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+[0-9a-f]+: 4c 8b 15 eb 01 10 00[ ]+mov 1049067\(%rip\),%r10 +# 101310 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x30
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 4d 8b 22[ ]+mov %fs:\(%r10\),%r12
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden and local var
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+[0-9a-f]+: 48 8b 15 f2 01 10 00[ ]+mov 1049074\(%rip\),%rdx +# 101328 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x50
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 12[ ]+mov %fs:\(%rdx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden but not local var
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+[0-9a-f]+: 48 8b 0d e9 01 10 00[ ]+mov 1049065\(%rip\),%rcx +# 101330 <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x70
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: c9[ ]+leaveq *
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+[0-9a-f]+: c3[ ]+retq *
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+[0-9a-f]+: 90[ ]+nop *
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