mirror of
https://sourceware.org/git/binutils-gdb.git
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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.
165 lines
6.4 KiB
R
165 lines
6.4 KiB
R
#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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#readelf: -WSsrld
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#target: x86_64-*-*
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There are 16 section headers, starting at offset 0x[0-9a-f]+:
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Section Headers:
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\[Nr\] Name +Type +Address +Off +Size +ES Flg Lk Inf Al
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\[ 0\] +NULL +0+ 0+ 0+ 00 +0 +0 +0
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\[ 1\] .hash +.*
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\[ 2\] .dynsym +.*
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\[ 3\] .dynstr +.*
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\[ 4\] .rela.dyn +.*
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\[ 5\] .rela.plt +.*
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\[ 6\] .plt +PROGBITS +0+470 0+470 0+20 10 +AX +0 +0 +4
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\[ 7\] .text +PROGBITS +0+1000 0+1000 0+154 00 +AX +0 +0 4096
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\[ 8\] .tdata +PROGBITS +0+101154 0+1154 0+60 00 WAT +0 +0 +1
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\[ 9\] .tbss +NOBITS +0+1011b4 0+11b4 0+20 00 WAT +0 +0 +1
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\[10\] .dynamic +DYNAMIC +0+1011b8 0+11b8 0+150 10 +WA +3 +0 +8
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\[11\] .got +PROGBITS +0+101308 0+1308 0+48 08 +WA +0 +0 +8
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\[12\] .got.plt +PROGBITS +0+101350 0+1350 0+68 08 +WA +0 +0 +8
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\[13\] .shstrtab +.*
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\[14\] .symtab +.*
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\[15\] .strtab +.*
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Key to Flags:
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.*
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.*
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.*
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Elf file type is DYN \(Shared object file\)
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Entry point 0x1000
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There are 4 program headers, starting at offset [0-9]+
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Program Headers:
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Type +Offset +VirtAddr +PhysAddr +FileSiz +MemSiz +Flg Align
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LOAD +0x0+ 0x0+ 0x0+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x100000
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LOAD +0x0+1154 0x0+101154 0x0+101154 0x0+264 0x0+264 RW +0x100000
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DYNAMIC +0x0+11b8 0x0+1011b8 0x0+1011b8 0x0+150 0x0+150 RW +0x8
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TLS +0x0+1154 0x0+101154 0x0+101154 0x0+60 0x0+80 R +0x1
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Section to Segment mapping:
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Segment Sections...
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00 +.hash .dynsym .dynstr .rela.dyn .rela.plt .plt .text *
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01 +.tdata .dynamic .got .got.plt *
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02 +.dynamic *
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03 +.tdata .tbss *
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Dynamic section at offset 0x[0-9a-f]+ contains 16 entries:
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+Tag +Type +Name/Value
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0x[0-9a-f]+ +\(HASH\).*
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0x[0-9a-f]+ +\(STRTAB\).*
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0x[0-9a-f]+ +\(SYMTAB\).*
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0x[0-9a-f]+ +\(STRSZ\).*
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0x[0-9a-f]+ +\(SYMENT\).*
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0x[0-9a-f]+ +\(PLTGOT\).*
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0x[0-9a-f]+ +\(PLTRELSZ\).*
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0x[0-9a-f]+ +\(PLTREL\).*
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0x[0-9a-f]+ +\(JMPREL\).*
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0x[0-9a-f]+ +\(TLSDESC_PLT\) +0x480
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0x[0-9a-f]+ +\(TLSDESC_GOT\) +0x101348
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0x[0-9a-f]+ +\(RELA\).*
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0x[0-9a-f]+ +\(RELASZ\).*
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0x[0-9a-f]+ +\(RELAENT\).*
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0x[0-9a-f]+ +\(FLAGS\).*
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0x[0-9a-f]+ +\(NULL\).*
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Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 8 entries:
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+Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
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0+101308 0+12 R_X86_64_TPOFF64 +0+24
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0+101310 0+12 R_X86_64_TPOFF64 +0+30
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0+101318 0+12 R_X86_64_TPOFF64 +0+64
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0+101328 0+12 R_X86_64_TPOFF64 +0+50
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0+101330 0+12 R_X86_64_TPOFF64 +0+70
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0+101340 0+12 R_X86_64_TPOFF64 +0+44
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0+101320 0+700000012 R_X86_64_TPOFF64 +0+10 sg5 \+ 0
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0+101338 0+b00000012 R_X86_64_TPOFF64 +0+4 sg2 \+ 0
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Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 5 entries:
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+Offset +Info +Type +Symbol's Value Symbol's Name \+ Addend
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0+101398 0+800000024 R_X86_64_TLSDESC +0+ sg1 \+ 0
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0+101368 0+24 R_X86_64_TLSDESC +0+20
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0+1013a8 0+24 R_X86_64_TLSDESC +0+40
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0+101378 0+24 R_X86_64_TLSDESC +0+60
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0+101388 0+24 R_X86_64_TLSDESC +0+
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Symbol table '.dynsym' contains 16 entries:
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+Num: +Value +Size Type +Bind +Vis +Ndx Name
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+[0-9]+: 0+ +0 NOTYPE LOCAL DEFAULT UND *
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+[0-9]+: 0+1c +0 TLS +GLOBAL DEFAULT +8 sg8
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+[0-9]+: [0-9a-f]+ +0 NOTYPE GLOBAL DEFAULT ABS __bss_start
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+[0-9]+: 0+4 +0 TLS +GLOBAL DEFAULT +8 sg2
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+[0-9]+: 0+14 +0 TLS +GLOBAL DEFAULT +8 sg6
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+[0-9]+: [0-9a-f]+ +0 NOTYPE GLOBAL DEFAULT ABS _edata
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+[0-9]+: [0-9a-f]+ +0 NOTYPE GLOBAL DEFAULT ABS _end
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Symbol table '.symtab' contains 55 entries:
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+Num: +Value +Size Type +Bind +Vis +Ndx Name
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+[0-9]+: 0+ +0 NOTYPE LOCAL DEFAULT UND *
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