e41b3a1379
include/
* bfdlink.h (struct bfd_link_info): Add no_ld_generated_unwind_info
option.
ld/
* emultempl/elf32.em (OPTION_LD_GENERATED_UNWIND_INFO,
OPTION_NO_LD_GENERATED_UNWIND_INFO): Define.
(gld${EMULATION_NAME}_handle_option): Handle
--ld-generated-unwind-info and --no-ld-generated-unwind-info.
* ld.texinfo (--ld-generated-unwind-info,
--no-ld-generated-unwind-info): Document.
bfd/
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Allow no relocations
at all for linker created .eh_frame sections.
(_bfd_elf_discard_section_eh_frame): Handle linker created
.eh_frame sections with no relocations.
* elf64-x86-64.c: Include dwarf2.h.
(elf_x86_64_eh_frame_plt): New variable.
(PLT_CIE_LENGTH, PLT_FDE_LENGTH, PLT_FDE_START_OFFSET,
PLT_FDE_LEN_OFFSET): Define.
(struct elf_x86_64_link_hash_table): Add plt_eh_frame field.
(elf_x86_64_create_dynamic_sections): Create and fill in
.eh_frame section for .plt section.
(elf_x86_64_size_dynamic_sections): Write .plt section size
into .eh_frame FDE covering .plt section.
(elf_x86_64_finish_dynamic_sections): Write .plt section
start into .eh_frame FDE covering .plt section. Call
_bfd_elf_write_section_eh_frame on htab->plt_eh_frame section.
(elf_backend_plt_alignment): Define to 4.
* elf32-i386.c: Include dwarf2.h.
(elf_i386_eh_frame_plt): New variable.
(PLT_CIE_LENGTH, PLT_FDE_LENGTH, PLT_FDE_START_OFFSET,
PLT_FDE_LEN_OFFSET): Define.
(struct elf_i386_link_hash_table): Add plt_eh_frame field.
(elf_i386_create_dynamic_sections): Create and fill in
.eh_frame section for .plt section.
(elf_i386_size_dynamic_sections): Write .plt section size
into .eh_frame FDE covering .plt section.
(elf_i386_finish_dynamic_sections): Write .plt section
start into .eh_frame FDE covering .plt section. Call
_bfd_elf_write_section_eh_frame on htab->plt_eh_frame section.
(elf_backend_plt_alignment): Define to 4.
ld/testsuite/
* ld-x86-64/x86-64.exp: Link some testcases with
--no-ld-generated-unwind-info.
* ld-x86-64/tlsbin.rd: Add --no-ld-generated-unwind-info to ld
comment.
* ld-x86-64/tlsdesc.dd: Likewise.
* ld-x86-64/tlspic.dd: Likewise.
* ld-x86-64/tlsdesc.sd: Likewise.
* ld-x86-64/tlspic.rd: Likewise.
* ld-x86-64/tlsbindesc.rd: Likewise.
* ld-x86-64/tlsbindesc.sd: Likewise.
* ld-x86-64/tlsbin.td: Likewise.
* ld-x86-64/tlsdesc.pd: Likewise.
* ld-x86-64/tlsdesc.td: Likewise.
* ld-x86-64/tlsbindesc.dd: Likewise.
* ld-x86-64/tlsbin.dd: Likewise.
* ld-x86-64/tlsgdesc.rd: Likewise.
* ld-x86-64/tlspic.sd: Likewise.
* ld-x86-64/tlsbindesc.td: Likewise.
* ld-x86-64/tlspic.td: Likewise.
* ld-x86-64/tlsbin.sd: Likewise.
* ld-x86-64/ilp32-4.d: Likewise.
* ld-x86-64/tlsgdesc.dd: Add --no-ld-generated-unwind-info to ld
comment. Adjust.
* ld-x86-64/tlsdesc.rd: Likewise.
* ld-x86-64/tlsgd6.dd: Adjust.
* ld-x86-64/tlsgd5.dd: Likewise.
* ld-i386/i386.exp: Link some testcases with
--no-ld-generated-unwind-info.
* ld-i386/tlsbin.rd: Add --no-ld-generated-unwind-info to ld
comment..
* ld-i386/tlsdesc.dd: Likewise.
* ld-i386/tlspic.dd: Likewise.
* ld-i386/tlsdesc.sd: Likewise.
* ld-i386/tlsgdesc.dd: Likewise.
* ld-i386/tlsnopic.sd: Likewise.
* ld-i386/tlspic.rd: Likewise.
* ld-i386/tlsdesc.rd: Likewise.
* ld-i386/tlsbindesc.rd: Likewise.
* ld-i386/tlsbindesc.sd: Likewise.
* ld-i386/tlsbin.td: Likewise.
* ld-i386/tlsdesc.td: Likewise.
* ld-i386/tlsnopic.dd: Likewise.
* ld-i386/tlsbindesc.dd: Likewise.
* ld-i386/tlsbin.dd: Likewise.
* ld-i386/tlsgdesc.rd: Likewise.
* ld-i386/tlspic.sd: Likewise.
* ld-i386/tlsnopic.rd: Likewise.
* ld-i386/tlsbindesc.td: Likewise.
* ld-i386/tlspic.td: Likewise.
* ld-i386/tlsbin.sd: Likewise.
313 lines
9.1 KiB
Text
313 lines
9.1 KiB
Text
#source: tlsbinpic.s
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#source: tlsbin.s
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#as: --64
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#ld: -shared -melf_x86_64 --no-ld-generated-unwind-info
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#objdump: -drj.text
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#target: x86_64-*-*
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# PT_TLS layout is:
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# Offset from Offset from Name
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# TCB base TCB end
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# 0x00 -0xa0 sg1..sg8
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# 0x20 -0x80 sl1..sl8
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# 0x40 -0x60 sh1..sh8
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# 0x60 -0x40 bg1..bg8
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# 0x80 -0x20 bl1..bl8
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.*: +file format elf64-x86-64
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Disassembly of section .text:
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0+401000 <fn2>:
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401000: 55[ ]+push %rbp
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401001: 48 89 e5[ ]+mov %rsp,%rbp
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# GD -> IE because variable is not defined in executable
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401004: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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40100b: 00 00 *
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40100d: 48 03 05 dc 03 20 00[ ]+add 0x2003dc\(%rip\),%rax +# 6013f0 <.*>
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# -> R_X86_64_TPOFF64 sG1
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401014: 90[ ]+nop *
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401015: 90[ ]+nop *
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401016: 90[ ]+nop *
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401017: 90[ ]+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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401018: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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40101f: 00 00 *
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401021: 48 03 05 b8 03 20 00[ ]+add 0x2003b8\(%rip\),%rax +# 6013e0 <.*>
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# -> R_X86_64_TPOFF64 sG2
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401028: 90[ ]+nop *
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401029: 90[ ]+nop *
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40102a: 90[ ]+nop *
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40102b: 90[ ]+nop *
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# GD -> LE with global variable defined in executable
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40102c: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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401033: 00 00 *
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401035: 48 8d 80 60 ff ff ff[ ]+lea -0xa0\(%rax\),%rax
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# sg1
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40103c: 90[ ]+nop *
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40103d: 90[ ]+nop *
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40103e: 90[ ]+nop *
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40103f: 90[ ]+nop *
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# GD -> LE with local variable defined in executable
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401040: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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401047: 00 00 *
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401049: 48 8d 80 80 ff ff ff[ ]+lea -0x80\(%rax\),%rax
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# sl1
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401050: 90[ ]+nop *
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401051: 90[ ]+nop *
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401052: 90[ ]+nop *
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401053: 90[ ]+nop *
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# GD -> LE with hidden variable defined in executable
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401054: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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40105b: 00 00 *
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40105d: 48 8d 80 a0 ff ff ff[ ]+lea -0x60\(%rax\),%rax
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# sh1
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401064: 90[ ]+nop *
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401065: 90[ ]+nop *
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401066: 90[ ]+nop *
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401067: 90[ ]+nop *
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# LD -> LE
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401068: 66 66 66 64 48 8b 04[ ]+data32 data32 data32 mov %fs:0x0,%rax
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40106f: 25 00 00 00 00 *
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401074: 90[ ]+nop *
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401075: 90[ ]+nop *
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401076: 48 8d 90 81 ff ff ff[ ]+lea -0x7f\(%rax\),%rdx
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# sl1+1
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40107d: 90[ ]+nop *
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40107e: 90[ ]+nop *
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40107f: 4c 8d 88 86 ff ff ff[ ]+lea -0x7a\(%rax\),%r9
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# sl2+2
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401086: 90[ ]+nop *
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401087: 90[ ]+nop *
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401088: 90[ ]+nop *
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401089: 90[ ]+nop *
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# LD -> LE against hidden variables
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40108a: 66 66 66 64 48 8b 04[ ]+data32 data32 data32 mov %fs:0x0,%rax
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401091: 25 00 00 00 00 *
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401096: 90[ ]+nop *
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401097: 90[ ]+nop *
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401098: 48 8d 90 a0 ff ff ff[ ]+lea -0x60\(%rax\),%rdx
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# sh1
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40109f: 90[ ]+nop *
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4010a0: 90[ ]+nop *
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4010a1: 48 8d 88 a7 ff ff ff[ ]+lea -0x59\(%rax\),%rcx
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# sh2+3
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4010a8: 90[ ]+nop *
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4010a9: 90[ ]+nop *
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4010aa: 90[ ]+nop *
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4010ab: 90[ ]+nop *
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# IE against global var
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4010ac: 64 4c 8b 0c 25 00 00[ ]+mov %fs:0x0,%r9
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4010b3: 00 00 *
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4010b5: 90[ ]+nop *
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4010b6: 90[ ]+nop *
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4010b7: 4c 03 0d 22 03 20 00[ ]+add 0x200322\(%rip\),%r9 +# 6013e0 <.*>
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# -> R_X86_64_TPOFF64 sG2
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4010be: 90[ ]+nop *
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4010bf: 90[ ]+nop *
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4010c0: 90[ ]+nop *
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4010c1: 90[ ]+nop *
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# IE -> LE against global var defined in exec
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4010c2: 64 4c 8b 14 25 00 00[ ]+mov %fs:0x0,%r10
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4010c9: 00 00 *
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4010cb: 90[ ]+nop *
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4010cc: 90[ ]+nop *
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4010cd: 4d 8d 92 60 ff ff ff[ ]+lea -0xa0\(%r10\),%r10
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# sg1
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4010d4: 90[ ]+nop *
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4010d5: 90[ ]+nop *
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4010d6: 90[ ]+nop *
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4010d7: 90[ ]+nop *
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# IE -> LE against local var
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4010d8: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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4010df: 00 00 *
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4010e1: 90[ ]+nop *
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4010e2: 90[ ]+nop *
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4010e3: 48 8d 80 80 ff ff ff[ ]+lea -0x80\(%rax\),%rax
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# sl1
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4010ea: 90[ ]+nop *
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4010eb: 90[ ]+nop *
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4010ec: 90[ ]+nop *
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4010ed: 90[ ]+nop *
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# IE -> LE against hidden var
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4010ee: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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4010f5: 00 00 *
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4010f7: 90[ ]+nop *
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4010f8: 90[ ]+nop *
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4010f9: 48 8d 89 a0 ff ff ff[ ]+lea -0x60\(%rcx\),%rcx
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# sh1
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401100: 90[ ]+nop *
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401101: 90[ ]+nop *
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401102: 90[ ]+nop *
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401103: 90[ ]+nop *
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# Direct access through %fs
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# IE against global var
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401104: 48 8b 0d cd 02 20 00[ ]+mov 0x2002cd\(%rip\),%rcx +# 6013d8 <.*>
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# -> R_X86_64_TPOFF64 sG5
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40110b: 90[ ]+nop *
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40110c: 90[ ]+nop *
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40110d: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
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401111: 90[ ]+nop *
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401112: 90[ ]+nop *
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401113: 90[ ]+nop *
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401114: 90[ ]+nop *
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# IE->LE against local var
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401115: 49 c7 c3 90 ff ff ff[ ]+mov \$0xf+90,%r11
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# sl5
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40111c: 90[ ]+nop *
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40111d: 90[ ]+nop *
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40111e: 64 4d 8b 23[ ]+mov %fs:\(%r11\),%r12
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401122: 90[ ]+nop *
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401123: 90[ ]+nop *
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401124: 90[ ]+nop *
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401125: 90[ ]+nop *
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# IE->LE against hidden var
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401126: 48 c7 c2 b0 ff ff ff[ ]+mov \$0xf+b0,%rdx
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40112d: 90[ ]+nop *
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40112e: 90[ ]+nop *
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40112f: 64 48 8b 12[ ]+mov %fs:\(%rdx\),%rdx
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# sh5
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401133: 90[ ]+nop *
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401134: 90[ ]+nop *
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401135: 90[ ]+nop *
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401136: 90[ ]+nop *
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401137: c9[ ]+leaveq *
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401138: c3[ ]+retq *
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401139: 90[ ]+nop *
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40113a: 90[ ]+nop *
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40113b: 90[ ]+nop *
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0+40113c <_start>:
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40113c: 55[ ]+push %rbp
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40113d: 48 89 e5[ ]+mov %rsp,%rbp
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# IE against global var
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401140: 64 4c 8b 1c 25 00 00[ ]+mov %fs:0x0,%r11
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401147: 00 00 *
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401149: 90[ ]+nop *
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40114a: 90[ ]+nop *
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40114b: 4c 03 1d 96 02 20 00[ ]+add 0x200296\(%rip\),%r11 +# 6013e8 <.*>
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# -> R_X86_64_TPOFF64 sG6
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401152: 90[ ]+nop *
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401153: 90[ ]+nop *
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401154: 90[ ]+nop *
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401155: 90[ ]+nop *
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# IE -> LE against global var defined in exec
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401156: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
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40115d: 00 00 *
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40115f: 90[ ]+nop *
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401160: 90[ ]+nop *
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401161: 48 8d 92 d4 ff ff ff[ ]+lea -0x2c\(%rdx\),%rdx
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# bg6
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401168: 90[ ]+nop *
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401169: 90[ ]+nop *
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40116a: 90[ ]+nop *
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40116b: 90[ ]+nop *
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# IE -> LE against local var
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40116c: 64 4c 8b 24 25 00 00[ ]+mov %fs:0x0,%r12
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401173: 00 00 *
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401175: 90[ ]+nop *
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401176: 90[ ]+nop *
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401177: 49 81 c4 f4 ff ff ff[ ]+add \$0xf+f4,%r12
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# bl6
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40117e: 90[ ]+nop *
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40117f: 90[ ]+nop *
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401180: 90[ ]+nop *
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401181: 90[ ]+nop *
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# direct %fs access IE -> LE against local var
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401182: 48 c7 c2 fc ff ff ff[ ]+mov \$0xf+fc,%rdx
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# bl8
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401189: 90[ ]+nop *
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40118a: 90[ ]+nop *
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40118b: 64 48 8b 02[ ]+mov %fs:\(%rdx\),%rax
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40118f: 90[ ]+nop *
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401190: 90[ ]+nop *
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401191: 90[ ]+nop *
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401192: 90[ ]+nop *
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# IE -> LE against hidden but not local var
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401193: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
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40119a: 00 00 *
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40119c: 90[ ]+nop *
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40119d: 90[ ]+nop *
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40119e: 48 8d 92 b4 ff ff ff[ ]+lea -0x4c\(%rdx\),%rdx
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# sh6
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4011a5: 90[ ]+nop *
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4011a6: 90[ ]+nop *
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4011a7: 90[ ]+nop *
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4011a8: 90[ ]+nop *
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# direct %fs access IE -> LE against hidden but not local var
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4011a9: 48 c7 c2 bc ff ff ff[ ]+mov \$0xf+bc,%rdx
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# sh8
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4011b0: 90[ ]+nop *
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4011b1: 90[ ]+nop *
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4011b2: 64 48 8b 02[ ]+mov %fs:\(%rdx\),%rax
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4011b6: 90[ ]+nop *
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4011b7: 90[ ]+nop *
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4011b8: 90[ ]+nop *
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4011b9: 90[ ]+nop *
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# LE, global var defined in exec
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4011ba: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
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4011c1: 00 00 *
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4011c3: 90[ ]+nop *
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4011c4: 90[ ]+nop *
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4011c5: 48 8d 90 64 ff ff ff[ ]+lea -0x9c\(%rax\),%rdx
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# sg2
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4011cc: 90[ ]+nop *
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4011cd: 90[ ]+nop *
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4011ce: 90[ ]+nop *
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4011cf: 90[ ]+nop *
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# LE, local var, non-canonical sequence
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4011d0: 49 c7 c1 e6 ff ff ff[ ]+mov \$0xf+e6,%r9
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# bl2+2
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4011d7: 90[ ]+nop *
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4011d8: 90[ ]+nop *
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4011d9: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
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4011e0: 00 00 *
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4011e2: 90[ ]+nop *
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4011e3: 90[ ]+nop *
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4011e4: 4c 01 ca[ ]+add %r9,%rdx
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4011e7: 90[ ]+nop *
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4011e8: 90[ ]+nop *
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4011e9: 90[ ]+nop *
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4011ea: 90[ ]+nop *
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# LE, hidden var defined in exec, non-canonical sequence
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4011eb: 64 48 8b 14 25 00 00[ ]+mov %fs:0x0,%rdx
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4011f2: 00 00 *
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4011f4: 90[ ]+nop *
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4011f5: 90[ ]+nop *
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4011f6: 48 81 c2 a5 ff ff ff[ ]+add \$0xf+a5,%rdx
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# sh2+1
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4011fd: 90[ ]+nop *
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4011fe: 90[ ]+nop *
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4011ff: 90[ ]+nop *
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401200: 90[ ]+nop *
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# Direct %fs access
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# LE, global var defined in exec
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401201: 64 48 8b 04 25 68 ff[ ]+mov %fs:0xf+68,%rax
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401208: ff ff *
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# sg3
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40120a: 90[ ]+nop *
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40120b: 90[ ]+nop *
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40120c: 90[ ]+nop *
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40120d: 90[ ]+nop *
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# LE, local var
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40120e: 64 4c 8b 14 25 eb ff[ ]+mov %fs:0xf+eb,%r10
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401215: ff ff *
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# bl3+3
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401217: 90[ ]+nop *
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401218: 90[ ]+nop *
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401219: 90[ ]+nop *
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40121a: 90[ ]+nop *
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# LE, hidden var defined in exec
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40121b: 64 48 8b 14 25 a9 ff[ ]+mov %fs:0xf+a9,%rdx
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401222: ff ff *
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# sh3+1
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401224: 90[ ]+nop *
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401225: 90[ ]+nop *
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401226: 90[ ]+nop *
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401227: 90[ ]+nop *
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# LE, large model
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401228: 48 ba a5 ff ff ff ff[ ]+movabs \$0xffffffffffffffa5,%rdx
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40122f: ff ff ff *
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401232: c9[ ]+leaveq *
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401233: c3[ ]+retq *
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