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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.
129 lines
2.6 KiB
ArmAsm
129 lines
2.6 KiB
ArmAsm
/* Force .data aligned to 4K, so that .got very likely gets at
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0x5021a0 (0x60 bytes .tdata and 0x140 bytes .dynamic) */
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.data
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.balign 4096
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.section ".tdata", "awT", @progbits
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.globl sg1, sg2, sg3, sg4, sg5, sg6, sg7, sg8
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.globl sh1, sh2, sh3, sh4, sh5, sh6, sh7, sh8
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.hidden sh1, sh2, sh3, sh4, sh5, sh6, sh7, sh8
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sg1: .long 17
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sg2: .long 18
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sg3: .long 19
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sg4: .long 20
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sg5: .long 21
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sg6: .long 22
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sg7: .long 23
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sg8: .long 24
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sl1: .long 65
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sl2: .long 66
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sl3: .long 67
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sl4: .long 68
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sl5: .long 69
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sl6: .long 70
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sl7: .long 71
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sl8: .long 72
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sh1: .long 257
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sh2: .long 258
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sh3: .long 259
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sh4: .long 260
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sh5: .long 261
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sh6: .long 262
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sh7: .long 263
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sh8: .long 264
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/* Force .text aligned to 4K, so it very likely gets at 0x401000. */
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.text
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.balign 4096
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.globl fn2
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.type fn2,@function
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fn2:
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pushq %rbp
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movq %rsp, %rbp
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/* GD -> IE because variable is not defined in executable */
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leaq sG1@tlsdesc(%rip), %rax
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call *sG1@tlscall(%rax)
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nop;nop;nop;nop
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/* GD -> IE because variable is not defined in executable where
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the variable is referenced through IE too */
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leaq sG2@tlsdesc(%rip), %rax
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call *sG2@tlscall(%rax)
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nop;nop;nop;nop
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/* GD -> LE with global variable defined in executable */
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leaq sg1@tlsdesc(%rip), %rax
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call *sg1@tlscall(%rax)
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nop;nop;nop;nop
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/* GD -> LE with local variable defined in executable */
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leaq sl1@tlsdesc(%rip), %rax
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call *sl1@tlscall(%rax)
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nop;nop;nop;nop
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/* GD -> LE with hidden variable defined in executable */
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leaq sh1@tlsdesc(%rip), %rax
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call *sh1@tlscall(%rax)
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nop;nop;nop;nop
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/* LD -> LE */
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leaq _TLS_MODULE_BASE_@tlsdesc(%rip), %rax
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call *_TLS_MODULE_BASE_@tlscall(%rax)
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nop;nop
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leaq 1+sl1@dtpoff(%rax), %rdx
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nop;nop
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leaq sl2@dtpoff+2(%rax), %r9
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nop;nop;nop;nop
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/* LD -> LE against hidden variables */
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leaq sh1@dtpoff(%rax), %rdx
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nop;nop
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leaq 3+sh2@dtpoff(%rax), %rcx
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nop;nop;nop;nop
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/* IE against global var */
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movq %fs:0, %r9
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nop;nop
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addq sG2@gottpoff(%rip), %r9
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nop;nop;nop;nop
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/* IE -> LE against global var defined in exec */
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movq %fs:0, %r10
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nop;nop
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addq sg1@gottpoff(%rip), %r10
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nop;nop;nop;nop
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/* IE -> LE against local var */
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movq %fs:0, %rax
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nop;nop
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addq sl1@gottpoff(%rip), %rax
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nop;nop;nop;nop
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/* IE -> LE against hidden var */
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movq %fs:0, %rcx
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nop;nop
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addq sh1@gottpoff(%rip), %rcx
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nop;nop;nop;nop
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/* Direct access through %fs */
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/* IE against global var */
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movq sG5@gottpoff(%rip), %rcx
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nop;nop
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movq %fs:(%rcx), %rdx
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nop;nop;nop;nop
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/* IE->LE against local var */
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movq sl5@gottpoff(%rip), %r11
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nop;nop
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movq %fs:(%r11), %r12
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nop;nop;nop;nop
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/* IE->LE against hidden var */
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movq sh5@gottpoff(%rip), %rdx
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nop;nop
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movq %fs:(%rdx), %rdx
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nop;nop;nop;nop
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leave
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ret
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