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12 Commits

Author SHA1 Message Date
H.J. Lu
34630bd307 ld: Disable DT_RELR in some -z relro tests 
Disable DT_RELR in the following -z relro tests which don't expect
DT_RELR in linker outputs.

	* testsuite/ld-i386/pr20830.d: Pass $NO_DT_RELR_LDFLAGS to ld.
	* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Likewise.
	* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830b.d: Likewise.
	* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2022-01-13 06:11:23 -08:00
H.J. Lu
2f83249c13 elf: Remove the 1-page gap before the RELRO segment 
The existing RELRO scheme may leave a 1-page gap before the RELRO segment
and align the end of the RELRO segment to the page size:

  [18] .eh_frame    PROGBITS    408fa0 008fa0 005e80 00   A  0   0  8
  [19] .init_array  INIT_ARRAY  410de0 00fde0 000008 08  WA  0   0  8
  [20] .fini_array  FINI_ARRAY  410de8 00fde8 000008 08  WA  0   0  8
  [21] .dynamic     DYNAMIC     410df0 00fdf0 000200 10  WA  7   0  8
  [22] .got         PROGBITS    410ff0 00fff0 000010 08  WA  0   0  8
  [23] .got.plt     PROGBITS    411000 010000 000048 08  WA  0   0  8

Instead, we can remove the 1-page gap if the maximum page size >= the
maximum section alignment:

  [18] .eh_frame    PROGBITS    408fa0 008fa0 005e80 00   A  0   0  8
  [19] .init_array  INIT_ARRAY  40fde0 00fde0 000008 08  WA  0   0  8
  [20] .fini_array  FINI_ARRAY  40fde8 00fde8 000008 08  WA  0   0  8
  [21] .dynamic     DYNAMIC     40fdf0 00fdf0 000200 10  WA  7   0  8
  [22] .got         PROGBITS    40fff0 00fff0 000010 08  WA  0   0  8
  [23] .got.plt     PROGBITS    410000 010000 000048 08  WA  0   0  8

Because the end of the RELRO segment is always aligned to the page size
and may not be moved, the RELRO segment size may be increased:

  [ 3] .dynstr      STRTAB      000148 000148 000001 00   A  0   0  1
  [ 4] .eh_frame    PROGBITS    000150 000150 000000 00   A  0   0  8
  [ 5] .init_array  INIT_ARRAY  200150 000150 000010 08  WA  0   0  1
  [ 6] .fini_array  FINI_ARRAY  200160 000160 000010 08  WA  0   0  1
  [ 7] .jcr         PROGBITS    200170 000170 000008 00  WA  0   0  1
  [ 8] .data.rel.ro PROGBITS    200180 000180 000020 00  WA  0   0 16
  [ 9] .dynamic     DYNAMIC     2001a0 0001a0 0001c0 10  WA  3   0  8
  [10] .got         PROGBITS    200360 000360 0002a8 00  WA  0   0  8
  [11] .bss         NOBITS      201000 000608 000840 00  WA  0   0  1

vs the old section layout:

  [ 3] .dynstr      STRTAB      000148 000148 000001 00   A  0   0  1
  [ 4] .eh_frame    PROGBITS    000150 000150 000000 00   A  0   0  8
  [ 5] .init_array  INIT_ARRAY  200b48 000b48 000010 08  WA  0   0  1
  [ 6] .fini_array  FINI_ARRAY  200b58 000b58 000010 08  WA  0   0  1
  [ 7] .jcr         PROGBITS    200b68 000b68 000008 00  WA  0   0  1
  [ 8] .data.rel.ro PROGBITS    200b70 000b70 000020 00  WA  0   0 16
  [ 9] .dynamic     DYNAMIC     200b90 000b90 0001c0 10  WA  3   0  8
  [10] .got         PROGBITS    200d50 000d50 0002a8 00  WA  0   0  8
  [11] .bss         NOBITS      201000 000ff8 000840 00  WA  0   0  1

But there is no 1-page gap.

	PR ld/28743
	* ldlang.c (lang_size_relro_segment_1): Remove the 1-page gap
	before the RELRO segment if the maximum page size >= the maximum
	section alignment.
	* testsuite/ld-i386/pr20830.d: Adjusted.
	* testsuite/ld-s390/gotreloc_64-relro-1.dd: Likewise.
	* testsuite/ld-x86-64/pr14207.d: Likewise.
	* testsuite/ld-x86-64/pr18176.d: Likewise.
	* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Likewise.
	* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830b.d: Likewise.
	* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2022-01-13 05:20:51 -08:00
H.J. Lu
d1bcae833b ELF: Don't generate unused section symbols 
For ELF targets, section symbols are required only for relocations.
With -ffunction-sections -fdata-sections, there can be many unused
section symbols.  Sizes of libstdc++.a on Linux/x86-64 in GCC 11 are

With unused section symbols   : 39411698 bytes
Without unused section symbols: 39227002 bytes

The unused section symbols in libstdc++.a occupy more than 180 KB.

Add BSF_SECTION_SYM_USED to indicate if a section symbol should be
included in the symbol table.  The BSF_SECTION_SYM_USED should be set
if the section symbol is used for relocation or the section symbol is
always included in the symbol table.

Add keep_unused_section_symbols to bfd_target to indicate if unused
section symbols should be kept.  If TARGET_KEEP_UNUSED_SECTION_SYMBOLS
is defined as FALSE, unused ection symbols will be removed.

Tested on Linux/x86.  Other ELF backends need to:

1. Define TARGET_KEEP_UNUSED_SECTION_SYMBOLS to FALSE.
2. Mark used section symbols in assembler backend.
3. Remove unused section symbols from expected assembler and linker
outputs.

bfd/

	PR 27109
	* aix386-core.c (core_aix386_vec): Initialize
	keep_unused_section_symbol to TARGET_KEEP_UNUSED_SECTION_SYMBOLS.
	* aout-target.h (MY (vec)): Likewise.
	* binary.c (binary_vec): Likewise.
	* cisco-core.c (core_cisco_be_vec): Likewise.
	(core_cisco_le_vec): Likewise.
	* coff-alpha.c (alpha_ecoff_le_vec): Likewise.
	* coff-i386.c (TARGET_SYM): Likewise.
	(TARGET_SYM_BIG): Likewise.
	* coff-ia64.c (TARGET_SYM): Likewise.
	* coff-mips.c (mips_ecoff_le_vec): Likewise.
	(mips_ecoff_be_vec): Likewise.
	(mips_ecoff_bele_vec): Likewise.
	* coff-rs6000.c (rs6000_xcoff_vec): Likewise.
	(powerpc_xcoff_vec): Likewise.
	* coff-sh.c (sh_coff_small_vec): Likewise.
	(sh_coff_small_le_vec): Likewise.
	* coff-tic30.c (tic30_coff_vec): Likewise.
	* coff-tic54x.c (tic54x_coff0_vec): Likewise.
	(tic54x_coff0_beh_vec): Likewise.
	(tic54x_coff1_vec): Likewise.
	(tic54x_coff1_beh_vec): Likewise.
	(tic54x_coff2_vec): Likewise.
	(tic54x_coff2_beh_vec): Likewise.
	* coff-x86_64.c (TARGET_SYM): Likewise.
	(TARGET_SYM_BIG): Likewise.
	* coff64-rs6000.c (rs6000_xcoff64_vec): Likewise.
	(rs6000_xcoff64_aix_vec): Likewise.
	* coffcode.h (CREATE_BIG_COFF_TARGET_VEC): Likewise.
	(CREATE_BIGHDR_COFF_TARGET_VEC): Likewise.
	(CREATE_LITTLE_COFF_TARGET_VEC): Likewise.
	* elfxx-target.h (TARGET_BIG_SYM): Likewise.
	(TARGET_LITTLE_SYM): Likewise.
	* hppabsd-core.c (core_hppabsd_vec): Likewise.
	* hpux-core.c (core_hpux_vec): Likewise.
	* i386msdos.c (i386_msdos_vec): Likewise.
	* ihex.c (ihex_vec): Likewise.
	* irix-core.c (core_irix_vec): Likewise.
	* mach-o-target.c (TARGET_NAME): Likewise.
	* mmo.c (mmix_mmo_vec): Likewise.
	* netbsd-core.c (core_netbsd_vec): Likewise.
	* osf-core.c (core_osf_vec): Likewise.
	* pdp11.c (MY (vec)): Likewise.
	* pef.c (pef_vec): Likewise.
	(pef_xlib_vec): Likewise.
	* plugin.c (plugin_vec): Likewise.
	* ppcboot.c (powerpc_boot_vec): Likewise.
	* ptrace-core.c (core_ptrace_vec): Likewise.
	* sco5-core.c (core_sco5_vec): Likewise.
	* som.c (hppa_som_vec): Likewise.
	* srec.c (srec_vec): Likewise.
	(symbolsrec_vec): Likewise.
	* tekhex.c (tekhex_vec): Likewise.
	* trad-core.c (core_trad_vec): Likewise.
	* verilog.c (verilog_vec): Likewise.
	* vms-alpha.c (alpha_vms_vec): Likewise.
	* vms-lib.c (alpha_vms_lib_txt_vec): Likewise.
	* wasm-module.c (wasm_vec): Likewise.
	* xsym.c (sym_vec): Likewise.
	* elf.c (ignore_section_sym): Return TRUE if BSF_SECTION_SYM_USED
	isn't set.
	(elf_map_symbols): Don't include ignored section symbols.
	* elfcode.h (elf_slurp_symbol_table): Also set
	BSF_SECTION_SYM_USED on STT_SECTION symbols.
	* elflink.c (bfd_elf_final_link): Generated section symbols only
	when emitting relocations or reqired.
	* elfxx-x86.h (TARGET_KEEP_UNUSED_SECTION_SYMBOLS): New.
	* syms.c (BSF_SECTION_SYM_USED): New.
	* targets.c (TARGET_KEEP_UNUSED_SECTION_SYMBOLS): New.
	(bfd_target): Add keep_unused_section_symbols.
	(bfd_keep_unused_section_symbols): New.
	* bfd-in2.h: Regenerated.

binutils/

	PR 27109
	* objcopy.c (copy_object): Handle section symbols for
	non-relocatable inputs.
	* testsuite/binutils-all/readelf.exp (readelf_test): Check
	is_elf_unused_section_symbols.
	* testsuite/binutils-all/readelf.s-64: Updated.
	* testsuite/binutils-all/readelf.ss: Likewise.
	* testsuite/binutils-all/readelf.ss-64: Likewise.
	* testsuite/binutils-all/readelf.s-64-unused: New file.
	* testsuite/binutils-all/readelf.ss-64-unused: Likewise.
	* testsuite/binutils-all/readelf.ss-unused: Likewise.
	* testsuite/lib/binutils-common.exp
	(is_elf_unused_section_symbols): New proc.

gas/ChangeLog:

	PR 27109
	* read.c (s_reloc): Call symbol_mark_used_in_reloc on the
	section symbol.
	* subsegs.c (subseg_set_rest): Set BSF_SECTION_SYM_USED if needed.
	* write.c (adjust_reloc_syms): Call symbol_mark_used_in_reloc
	on the section symbol.
	(set_symtab): Don't generate unused section symbols.
	(maybe_generate_build_notes): Call symbol_mark_used_in_reloc
	on the section symbol.
	* config/obj-elf.c (elf_adjust_symtab): Call
	symbol_mark_used_in_reloc on the group signature symbol.
	* testsuite/gas/cfi/cfi-label.d: Remove unused section symbols
	from expected output.
	* testsuite/gas/elf/elf.exp (run_elf_list_test): Check
	is_elf_unused_section_symbols.
	* testsuite/gas/elf/section2.e: Updated.
	* testsuite/gas/elf/section2.e-unused: New file.
	* testsuite/gas/elf/symver.d: Remove unused section symbols.
	* testsuite/gas/i386/ilp32/elf/symver.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-size-1.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-size-3.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-size-5.d: Likewise.
	* testsuite/gas/i386/ilp32/x86-64-unwind.d: Likewise.
	* testsuite/gas/i386/size-1.d: Likewise.
	* testsuite/gas/i386/size-3.d: Likewise.
	* testsuite/gas/i386/svr4.d: Likewise.
	* testsuite/gas/i386/x86-64-size-1.d: Likewise.
	* testsuite/gas/i386/x86-64-size-3.d: Likewise.
	* testsuite/gas/i386/x86-64-size-5.d: Likewise.
	* testsuite/gas/i386/x86-64-unwind.d: Likewise.

ld/

	PR 27109
	* testsuite/ld-elf/export-class.sd: Adjust the expected output.
	* testsuite/ld-elf/loadaddr3b.d: Likewise.
	* testsuite/ld-i386/ibt-plt-1.d: Likewise.
	* testsuite/ld-i386/ibt-plt-2a.d: Likewise.
	* testsuite/ld-i386/ibt-plt-2c.d: Likewise.
	* testsuite/ld-i386/ibt-plt-3a.d: Likewise.
	* testsuite/ld-i386/ibt-plt-3c.d: Likewise.
	* testsuite/ld-i386/pr19636-1d.d: Likewise.
	* testsuite/ld-i386/pr19636-1l.d: Likewise.
	* testsuite/ld-i386/pr19636-2c.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-i386-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise.
	* testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise.
	* testsuite/ld-ifunc/pr17154-i386-now.d: Likewise.
	* testsuite/ld-ifunc/pr17154-i386.d: Likewise.
	* testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/pr17154-x86-64.d: Likewise.
	* testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4e.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2l.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1d.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1h.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038b.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
	* testsuite/ld-x86-64/pr23854.d: Likewise.
	* testsuite/ld-x86-64/pr25416-3.d: Likewise.
	* testsuite/ld-x86-64/pr25416-4.d: Likewise.
	* testsuite/ld-i386/plt-pic.pd: Likewise.
	* testsuite/ld-i386/plt-pic2.dd: Likewise.
	* testsuite/ld-i386/plt.pd: Likewise.
	* testsuite/ld-i386/plt2.dd: Likewise.
	* testsuite/ld-i386/tlsbin.rd: Likewise.
	* testsuite/ld-i386/tlsbin2.rd: Likewise.
	* testsuite/ld-i386/tlsbindesc.rd: Likewise.
	* testsuite/ld-i386/tlsdesc.rd: Likewise.
	* testsuite/ld-i386/tlsgdesc.rd: Likewise.
	* testsuite/ld-i386/tlsnopic.rd: Likewise.
	* testsuite/ld-i386/tlspic.rd: Likewise.
	* testsuite/ld-i386/tlspic2.rd: Likewise.
	* testsuite/ld-x86-64/mpx3.dd: Likewise.
	* testsuite/ld-x86-64/mpx3n.dd: Likewise.
	* testsuite/ld-x86-64/mpx4.dd: Likewise.
	* testsuite/ld-x86-64/mpx4n.dd: Likewise.
	* testsuite/ld-x86-64/pe-x86-64-1.od: Likewise.
	* testsuite/ld-x86-64/pe-x86-64-2.od: Likewise.
	* testsuite/ld-x86-64/pe-x86-64-3.od: Likewise.
	* testsuite/ld-x86-64/pe-x86-64-4.od: Likewise.
	* testsuite/ld-x86-64/plt.pd: Likewise.
	* testsuite/ld-x86-64/plt2.dd: Likewise.
	* testsuite/ld-x86-64/tlsbin.rd: Likewise.
	* testsuite/ld-x86-64/tlsbin2.rd: Likewise.
	* testsuite/ld-x86-64/tlsbindesc.rd: Likewise.
	* testsuite/ld-x86-64/tlsdesc.rd: Likewise.
	* testsuite/ld-x86-64/tlsgdesc.rd: Likewise.
	* testsuite/ld-x86-64/tlspic.rd: Likewise.
	* testsuite/ld-x86-64/tlspic2.rd: Likewise.
	* testsuite/ld-elf/sec64k.exp: Check
	is_elf_unused_section_symbols.
 2021-01-07 06:46:55 -08:00
Jan Beulich
36938cabf0 x86: avoid attaching suffixes to unambiguous insns 
"Unambiguous" is is in particular taking as reference the assembler,
which also accepts certain insns - despite them allowing for varying
operand size, and hence in principle being ambiguous - without any
suffix. For example, from the very beginning of the life of x86-64 I had
trouble understanding why a plain and simple RET had to be printed as
RETQ. In case someone really used the 16-bit form, RETW disambiguates
the two quite fine.
 2020-07-15 08:53:55 +02:00
Alan Modra
fd161d860f Define various symbols conditionally in shared libraries 
The values of symbols in shared libraries like _end, _edata, and
__bss_start are generally not that useful outside of the shared
library.  This patch defines them conditionally with PROVIDE, since a
shared library might need the local value.  An example is glibc ld.so
local access to "_begin", "_etext" and "_end".  (ld.so gains access to
the local values by making the references using hidden visibility.
That makes the definitions hidden too.)

We can't use PROVIDE_HIDDEN in the linker scripts because the shared
library might need the value of the symbol in the executable.  An
example is freebsd libc dynamic access to "_end".

	PR ld/23161
	* emulparams/aarch64cloudabi.sh: PROVIDE __bss_start__, _bss_end__,
	and __end__ in shared libraries.
	* emulparams/aarch64fbsd.sh: Likewise.
	* emulparams/aarch64linux.sh: Likewise.
	* emulparams/aarch64linux32.sh: Likewise.
	* emulparams/armelf_fuchsia.sh: Likewise.
	* emulparams/armelf_linux.sh: Likewise.
	* emulparams/armelf_phoenix.sh: Likewise.
	* emulparams/aarch64elf.sh: Likewise, and __data_start
	* emulparams/aarch64elf32.sh: Likewise.
	* emulparams/armelf.sh: Likewise.
	* emulparams/armnto.sh: Likewise.
	* emulparams/elf32bmip.sh: Remove duplicate ". = ." from
	OTHER_GOT_SYMBOLS.  PROVIDE _ftext, _fdata, and _fbss in shared libs.
	* emulparams/elf32bmipn32-defs.sh: Likewise.
	* emulparams/elf32frv.sh: PROVIDE __end and __data_start in shared libs.
	* emulparams/elf32lriscv-defs.sh: Tidy.
	* emulparams/elf32mcore.sh: PROVIDE __bss_start and _bss_end in
	shared libs
	* emulparams/elf32ppccommon.sh: PROVIDE __end in shared libs.
	* emulparams/elf32rl78.sh: Tidy.
	* emulparams/i386nto.sh: PROVIDE _btext in shared libs.
	* emulparams/shelf_nto.sh: Likewise.
	* emulparams/shlelf_nto.sh: Likewise.
	* emulparams/score3_elf.sh: PROVIDE _gp, _bss_start__, _bss_end__,
	__bss_end__, __end__, _fdata, _sdata_begin, and _bss_start in
	shared libs.
	* scripttempl/elf.sc: Don't use EXECUTABLE_SYMBOLS for shared
	libraries.  PROVIDE _edata, edata, __bss_start, and _end in shared
	libraries.
	* testsuite/ld-elf/pr23161.map,
	* testsuite/ld-elf/pr23161a.c,
	* testsuite/ld-elf/pr23161b.c,
	* testsuite/ld-elf/pr23161c.c,
	* testsuite/ld-elf/pr23161a.rd,
	* testsuite/ld-elf/pr23161b.rd,
	* testsuite/ld-elf/pr23161c.rd,
	* testsuite/ld-elf/pr23161d.rd: New tests.
	* testsuite/ld-elf/shared.exp: Run ld/23161 tests.
	* testsuite/ld-elf/pr23162.rd,
	* testsuite/ld-aarch64/ifunc-1-local.d,
	* testsuite/ld-aarch64/ifunc-1.d,
	* testsuite/ld-aarch64/ifunc-2-local.d,
	* testsuite/ld-aarch64/ifunc-2.d,
	* testsuite/ld-aarch64/ifunc-21.d,
	* testsuite/ld-aarch64/ifunc-3a.d,
	* testsuite/ld-alpha/tlsbin.rd,
	* testsuite/ld-alpha/tlsbin.sd,
	* testsuite/ld-alpha/tlsbinr.rd,
	* testsuite/ld-alpha/tlspic.rd,
	* testsuite/ld-alpha/tlspic.sd,
	* testsuite/ld-cris/dso-pltdis1.d,
	* testsuite/ld-cris/dso-pltdis2.d,
	* testsuite/ld-cris/dso12-pltdis.d,
	* testsuite/ld-cris/gotplt1.d,
	* testsuite/ld-cris/gotplt2.d,
	* testsuite/ld-cris/gotplt3.d,
	* testsuite/ld-cris/hiddef1.d,
	* testsuite/ld-cris/libdso-1.d,
	* testsuite/ld-cris/libdso-10.d,
	* testsuite/ld-cris/libdso-11.d,
	* testsuite/ld-cris/libdso-12.d,
	* testsuite/ld-cris/libdso-12b.d,
	* testsuite/ld-cris/libdso-12c.d,
	* testsuite/ld-cris/libdso-13.d,
	* testsuite/ld-cris/libdso-13b.d,
	* testsuite/ld-cris/libdso-14.d,
	* testsuite/ld-cris/libdso-15.d,
	* testsuite/ld-cris/libdso-15b.d,
	* testsuite/ld-cris/libdso-1c.d,
	* testsuite/ld-cris/libdso-1d.d,
	* testsuite/ld-cris/libdso-2.d,
	* testsuite/ld-cris/pic-gc-72.d,
	* testsuite/ld-cris/pic-gc-73.d,
	* testsuite/ld-cris/pr16044.d,
	* testsuite/ld-cris/pv32-1.d,
	* testsuite/ld-cris/tls-dso-dtpoffd2.d,
	* testsuite/ld-cris/tls-dso-dtpoffd4.d,
	* testsuite/ld-cris/tls-dso-tpoffgotcomm1.d,
	* testsuite/ld-cris/tls-gc-71.d,
	* testsuite/ld-cris/tls-gd-1.d,
	* testsuite/ld-cris/tls-gd-1h.d,
	* testsuite/ld-cris/tls-gd-2.d,
	* testsuite/ld-cris/tls-gd-2h.d,
	* testsuite/ld-cris/tls-ie-10.d,
	* testsuite/ld-cris/tls-ie-11.d,
	* testsuite/ld-cris/tls-ie-78.d,
	* testsuite/ld-cris/tls-ie-8.d,
	* testsuite/ld-cris/tls-ie-9.d,
	* testsuite/ld-cris/tls-js1.d,
	* testsuite/ld-cris/tls-ld-4.d,
	* testsuite/ld-cris/tls-ld-5.d,
	* testsuite/ld-cris/tls-ld-6.d,
	* testsuite/ld-cris/tls-ld-7.d,
	* testsuite/ld-cris/tls-ldgd-14.d,
	* testsuite/ld-cris/tls-ldgd-15.d,
	* testsuite/ld-cris/tls-ldgdex-14.d,
	* testsuite/ld-cris/tls-ldgdex-15.d,
	* testsuite/ld-cris/tls-ldgdx-14.d,
	* testsuite/ld-cris/tls-ldgdx-15.d,
	* testsuite/ld-cris/tls-legdx-16.d,
	* testsuite/ld-cris/tls-legdx-17.d,
	* testsuite/ld-cris/tls-local-54.d,
	* testsuite/ld-cris/tls-local-60.d,
	* testsuite/ld-cris/tls-local-61.d,
	* testsuite/ld-cris/tls-local-63.d,
	* testsuite/ld-cris/tls-local-64.d,
	* testsuite/ld-cris/tls-ok-30.d,
	* testsuite/ld-cris/tls-ok-32.d,
	* testsuite/ld-cris/tls-ok-34.d,
	* testsuite/ld-cris/tls-und-38.d,
	* testsuite/ld-cris/tls-und-42.d,
	* testsuite/ld-cris/tls-und-46.d,
	* testsuite/ld-cris/tls-und-50.d,
	* testsuite/ld-cris/weakhiddso.d,
	* testsuite/ld-cris/weakref2.d,
	* testsuite/ld-frv/fdpic-shared-1.d,
	* testsuite/ld-frv/fdpic-shared-2.d,
	* testsuite/ld-frv/fdpic-shared-3.d,
	* testsuite/ld-frv/fdpic-shared-4.d,
	* testsuite/ld-frv/fdpic-shared-5.d,
	* testsuite/ld-frv/fdpic-shared-7.d,
	* testsuite/ld-frv/fdpic-shared-8.d,
	* testsuite/ld-frv/tls-dynamic-2.d,
	* testsuite/ld-i386/ibt-plt-1.d,
	* testsuite/ld-i386/ibt-plt-2a.d,
	* testsuite/ld-i386/ibt-plt-2b.d,
	* testsuite/ld-i386/ibt-plt-2c.d,
	* testsuite/ld-i386/ibt-plt-2d.d,
	* testsuite/ld-i386/ibt-plt-3a.d,
	* testsuite/ld-i386/ibt-plt-3b.d,
	* testsuite/ld-i386/ibt-plt-3c.d,
	* testsuite/ld-i386/ibt-plt-3d.d,
	* testsuite/ld-i386/plt2.dd,
	* testsuite/ld-i386/pr20830.d,
	* testsuite/ld-i386/tlsbin-nacl.rd,
	* testsuite/ld-i386/tlsbin.rd,
	* testsuite/ld-i386/tlsbin2-nacl.rd,
	* testsuite/ld-i386/tlsbin2.rd,
	* testsuite/ld-i386/tlsbindesc-nacl.rd,
	* testsuite/ld-i386/tlsbindesc.rd,
	* testsuite/ld-i386/tlsdesc-nacl.rd,
	* testsuite/ld-i386/tlsdesc.rd,
	* testsuite/ld-i386/tlsgdesc-nacl.rd,
	* testsuite/ld-i386/tlsgdesc.rd,
	* testsuite/ld-i386/tlsnopic-nacl.rd,
	* testsuite/ld-i386/tlsnopic.dd,
	* testsuite/ld-i386/tlsnopic.rd,
	* testsuite/ld-i386/tlsnopic.sd,
	* testsuite/ld-i386/tlspic-nacl.rd,
	* testsuite/ld-i386/tlspic.rd,
	* testsuite/ld-i386/tlspic2-nacl.rd,
	* testsuite/ld-i386/tlspic2.rd,
	* testsuite/ld-ia64/merge1.d,
	* testsuite/ld-ia64/merge2.d,
	* testsuite/ld-ia64/merge3.d,
	* testsuite/ld-ia64/merge4.d,
	* testsuite/ld-ia64/merge5.d,
	* testsuite/ld-ia64/tlsbin.rd,
	* testsuite/ld-ia64/tlspic.rd,
	* testsuite/ld-ifunc/ifunc-2-i386-now.d,
	* testsuite/ld-ifunc/ifunc-2-local-i386-now.d,
	* testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d,
	* testsuite/ld-ifunc/ifunc-2-local-x86-64.d,
	* testsuite/ld-ifunc/ifunc-2-x86-64-now.d,
	* testsuite/ld-ifunc/ifunc-2-x86-64.d,
	* testsuite/ld-ifunc/pr17154-i386-now.d,
	* testsuite/ld-ifunc/pr17154-i386.d,
	* testsuite/ld-ifunc/pr17154-x86-64-now.d,
	* testsuite/ld-ifunc/pr17154-x86-64.d,
	* testsuite/ld-m68k/tls-def-1.d,
	* testsuite/ld-m68k/tls-gd-1.d2,
	* testsuite/ld-metag/shared.d,
	* testsuite/ld-metag/stub_pic_app.d,
	* testsuite/ld-mips-elf/rel32-n32.d,
	* testsuite/ld-mips-elf/rel32-o32.d,
	* testsuite/ld-mips-elf/rel64.d,
	* testsuite/ld-powerpc/ambiguousv1.d,
	* testsuite/ld-powerpc/ambiguousv1b.d,
	* testsuite/ld-powerpc/ambiguousv2.d,
	* testsuite/ld-powerpc/ambiguousv2b.d,
	* testsuite/ld-powerpc/tlsexe.d,
	* testsuite/ld-powerpc/tlsexe.r,
	* testsuite/ld-powerpc/tlsexe32.d,
	* testsuite/ld-powerpc/tlsexe32.g,
	* testsuite/ld-powerpc/tlsexe32.r,
	* testsuite/ld-powerpc/tlsexetoc.d,
	* testsuite/ld-powerpc/tlsexetoc.r,
	* testsuite/ld-powerpc/tlsso.d,
	* testsuite/ld-powerpc/tlsso.r,
	* testsuite/ld-powerpc/tlsso32.g,
	* testsuite/ld-powerpc/tlsso32.r,
	* testsuite/ld-powerpc/tlstocso.d,
	* testsuite/ld-powerpc/tlstocso.g,
	* testsuite/ld-powerpc/tlstocso.r,
	* testsuite/ld-s390/gotreloc_31-1.dd,
	* testsuite/ld-s390/tlsbin.dd,
	* testsuite/ld-s390/tlsbin.rd,
	* testsuite/ld-s390/tlsbin_64.dd,
	* testsuite/ld-s390/tlsbin_64.rd,
	* testsuite/ld-s390/tlspic.rd,
	* testsuite/ld-s390/tlspic_64.rd,
	* testsuite/ld-sh/tlsbin-2.d,
	* testsuite/ld-sh/tlspic-2.d,
	* testsuite/ld-sparc/gotop32.rd,
	* testsuite/ld-sparc/gotop64.rd,
	* testsuite/ld-sparc/tlssunbin32.rd,
	* testsuite/ld-sparc/tlssunbin64.rd,
	* testsuite/ld-sparc/tlssunnopic32.rd,
	* testsuite/ld-sparc/tlssunnopic64.rd,
	* testsuite/ld-sparc/tlssunpic32.rd,
	* testsuite/ld-sparc/tlssunpic64.rd,
	* testsuite/ld-x86-64/bnd-branch-1-now.d,
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d,
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d,
	* testsuite/ld-x86-64/bnd-ifunc-2.d,
	* testsuite/ld-x86-64/bnd-plt-1-now.d,
	* testsuite/ld-x86-64/bnd-plt-1.d,
	* testsuite/ld-x86-64/ibt-plt-1-x32.d,
	* testsuite/ld-x86-64/ibt-plt-1.d,
	* testsuite/ld-x86-64/ibt-plt-2a-x32.d,
	* testsuite/ld-x86-64/ibt-plt-2a.d,
	* testsuite/ld-x86-64/ibt-plt-2b-x32.d,
	* testsuite/ld-x86-64/ibt-plt-2b.d,
	* testsuite/ld-x86-64/ibt-plt-2c-x32.d,
	* testsuite/ld-x86-64/ibt-plt-2c.d,
	* testsuite/ld-x86-64/ibt-plt-2d-x32.d,
	* testsuite/ld-x86-64/ibt-plt-2d.d,
	* testsuite/ld-x86-64/ibt-plt-3a-x32.d,
	* testsuite/ld-x86-64/ibt-plt-3a.d,
	* testsuite/ld-x86-64/ibt-plt-3b-x32.d,
	* testsuite/ld-x86-64/ibt-plt-3b.d,
	* testsuite/ld-x86-64/ibt-plt-3c-x32.d,
	* testsuite/ld-x86-64/ibt-plt-3c.d,
	* testsuite/ld-x86-64/ibt-plt-3d-x32.d,
	* testsuite/ld-x86-64/ibt-plt-3d.d,
	* testsuite/ld-x86-64/ilp32-4-nacl.d,
	* testsuite/ld-x86-64/ilp32-4.d,
	* testsuite/ld-x86-64/load1c-nacl.d,
	* testsuite/ld-x86-64/load1c.d,
	* testsuite/ld-x86-64/load1d-nacl.d,
	* testsuite/ld-x86-64/load1d.d,
	* testsuite/ld-x86-64/mpx3n.dd,
	* testsuite/ld-x86-64/mpx4.dd,
	* testsuite/ld-x86-64/mpx4n.dd,
	* testsuite/ld-x86-64/plt2.dd,
	* testsuite/ld-x86-64/pr14207.d,
	* testsuite/ld-x86-64/pr19162.d,
	* testsuite/ld-x86-64/pr20253-1f.d,
	* testsuite/ld-x86-64/pr20253-1l.d,
	* testsuite/ld-x86-64/pr20830a-now.d,
	* testsuite/ld-x86-64/pr20830a.d,
	* testsuite/ld-x86-64/pr20830b-now.d,
	* testsuite/ld-x86-64/pr20830b.d,
	* testsuite/ld-x86-64/pr21038a-now.d,
	* testsuite/ld-x86-64/pr21038a.d,
	* testsuite/ld-x86-64/pr21038b-now.d,
	* testsuite/ld-x86-64/pr21038b.d,
	* testsuite/ld-x86-64/pr21038c-now.d,
	* testsuite/ld-x86-64/pr21038c.d,
	* testsuite/ld-x86-64/tlsbin-nacl.rd,
	* testsuite/ld-x86-64/tlsbin.rd,
	* testsuite/ld-x86-64/tlsbin2-nacl.rd,
	* testsuite/ld-x86-64/tlsbin2.rd,
	* testsuite/ld-x86-64/tlsbindesc-nacl.rd,
	* testsuite/ld-x86-64/tlsbindesc.rd,
	* testsuite/ld-x86-64/tlsdesc-nacl.rd,
	* testsuite/ld-x86-64/tlsdesc.rd,
	* testsuite/ld-x86-64/tlsgdesc-nacl.rd,
	* testsuite/ld-x86-64/tlsgdesc.rd,
	* testsuite/ld-x86-64/tlspic-nacl.rd,
	* testsuite/ld-x86-64/tlspic.rd,
	* testsuite/ld-x86-64/tlspic2-nacl.rd,
	* testsuite/ld-x86-64/tlspic2.rd: Update.
 2018-06-08 20:17:34 +09:30
H.J. Lu
c2596c4a72 x86-64: Add -z max-page-size=0x200000 -z noseparate-code to linker tests 
Add -z max-page-size=0x200000 -z noseparate-code since these tests
check for exact addresses.

	* testsuite/ld-x86-64/bnd-branch-1-now.d: Add  -z
	max-page-size=0x200000 -z noseparate-code.
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2b-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2b.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2d-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2d.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3b-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3b.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3d-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3d.d: Likewise.
	* testsuite/ld-x86-64/load1a.d: Likewise.
	* testsuite/ld-x86-64/load1b.d: Likewise.
	* testsuite/ld-x86-64/load1c.d: Likewise.
	* testsuite/ld-x86-64/load1d.d: Likewise.
	* testsuite/ld-x86-64/pie3.d: Likewise.
	* testsuite/ld-x86-64/pr14207.d: Likewise.
	* testsuite/ld-x86-64/pr17618.d: Likewise.
	* testsuite/ld-x86-64/pr19162.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2l.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1b.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1d.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1f.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1h.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1j.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1l.d: Likewise.
	* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Likewise.
	* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830b.d: Likewise.
	* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038b.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2018-02-16 10:03:12 -08:00
Alan Modra
bab55c0522 Support different ld --hash-style in the ld testsuite 
When ld is running with something other than --hash-style=sysv by
default, numerous tests need tweaking.  Most of the changes just add
--hash-style=sysv.  I didn't want to make --hash-style=sysv global as
that means --hash-style=gnu isn't well tested.

	* testsuite/ld-alpha/alpha.exp: Add --hash-style=sysv to various
	test's ld options.
	* testsuite/ld-arm/arm-elf.exp: Likewise.
	* testsuite/ld-elf/elf.exp: Likewise.
	* testsuite/ld-elf/readelf.exp: Likewise.
	* testsuite/ld-elfvsb/elfvsb.exp: Likewise.
	* testsuite/ld-i386/i386.exp: Likewise.
	* testsuite/ld-ia64/ia64.exp: Likewise.
	* testsuite/ld-m68k/m68k.exp: Likewise.
	* testsuite/ld-metag/metag.exp: Likewise.
	* testsuite/ld-powerpc/powerpc.exp: Likewise.
	* testsuite/ld-s390/s390.exp: Likewise.
	* testsuite/ld-sh/sh-vxworks.exp: Likewise.
	* testsuite/ld-shared/shared.exp: Likewise.
	* testsuite/ld-sparc/sparc.exp: Likewise.
	* testsuite/ld-tic6x/tic6x.exp: Likewise.
	* testsuite/ld-vax-elf/vax-elf.exp: Likewise.
	* testsuite/ld-x86-64/mpx.exp: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-xtensa/xtensa.exp: Likewise.

	* testsuite/ld-elf/comm-data2.ld: Add .gnu.hash output section.
	* testsuite/ld-elf/pr20828-v.ld: Likewise.
	* testsuite/ld-elf/pr20828.ld: Likewise.
	* testsuite/ld-elf/pr21233.ld: Likewise.
	* testsuite/ld-elf/pr21384.ld: Likewise.
	* testsuite/ld-elf/provide-hidden-1.ld: Likewise.
	* testsuite/ld-elf/provide-hidden-2.ld: Likewise.
	* testsuite/ld-elf/provide-hidden-s.ld: Likewise.
	* testsuite/ld-scripts/cross1.t: Likewise.

	* testsuite/ld-elf/stab.d: Adjust allowed section indices.

	* testsuite/ld-i386/pie1.d: Don't match addresses.
	* testsuite/ld-i386/plt-pic2.dd: Likewise.
	* testsuite/ld-i386/pr19636-1d.d: Likewise.
	* testsuite/ld-i386/pr19636-2c.d: Likewise.
	* testsuite/ld-powerpc/elfv2so.d: Likewise.
	* testsuite/ld-powerpc/tlsopt5.d: Likewise.
	* testsuite/ld-powerpc/tlsopt5.wf: Likewise.
	* testsuite/ld-powerpc/tlsopt5_32.d: Likewise.

	* testsuite/ld-i386/pr19636-2b.d: Don't match _start.

	* testsuite/ld-powerpc/ambiguousv1.d: Relax symbol count, index
	and address match.
	* testsuite/ld-powerpc/ambiguousv1b.d: Likewise.
	* testsuite/ld-powerpc/ambiguousv2.d: Likewise.
	* testsuite/ld-powerpc/ambiguousv2b.d: Likewise.

	* testsuite/ld-aarch64/gc-plt-relocs.d: Run ld with --hash-style=sysv.
	* testsuite/ld-aarch64/ifunc-1.d: Likewise.
	* testsuite/ld-aarch64/ifunc-2.d: Likewise.
	* testsuite/ld-aarch64/ifunc-21.d: Likewise.
	* testsuite/ld-aarch64/relasz.d: Likewise.
	* testsuite/ld-aarch64/tls-small-ld.d: Likewise.
	* testsuite/ld-aarch64/tls-tiny-ld.d: Likewise.
	* testsuite/ld-arc/tls_gd-01.d: Likewise.
	* testsuite/ld-cris/libdso-10.d: Likewise.
	* testsuite/ld-cris/libdso-2.d: Likewise.
	* testsuite/ld-cris/pic-gc-72.d: Likewise.
	* testsuite/ld-cris/pic-gc-73.d: Likewise.
	* testsuite/ld-cris/tls-gd-1.d: Likewise.
	* testsuite/ld-cris/tls-gd-1h.d: Likewise.
	* testsuite/ld-cris/tls-gd-2.d: Likewise.
	* testsuite/ld-cris/tls-gd-2h.d: Likewise.
	* testsuite/ld-cris/tls-ie-10.d: Likewise.
	* testsuite/ld-cris/tls-ie-11.d: Likewise.
	* testsuite/ld-cris/tls-ie-8.d: Likewise.
	* testsuite/ld-cris/tls-ie-9.d: Likewise.
	* testsuite/ld-cris/tls-ld-4.d: Likewise.
	* testsuite/ld-cris/tls-ld-5.d: Likewise.
	* testsuite/ld-cris/tls-ld-6.d: Likewise.
	* testsuite/ld-cris/tls-ld-7.d: Likewise.
	* testsuite/ld-cris/tls-ldgd-14.d: Likewise.
	* testsuite/ld-cris/tls-ldgd-15.d: Likewise.
	* testsuite/ld-cris/tls-ldgdx-14.d: Likewise.
	* testsuite/ld-cris/tls-ldgdx-15.d: Likewise.
	* testsuite/ld-cris/tls-local-54.d: Likewise.
	* testsuite/ld-cris/tls-local-60.d: Likewise.
	* testsuite/ld-cris/tls-local-61.d: Likewise.
	* testsuite/ld-cris/weakhiddso.d: Likewise.
	* testsuite/ld-elf/linkinfo1a.d: Likewise.
	* testsuite/ld-elf/linkinfo1b.d: Likewise.
	* testsuite/ld-elf/pr19617a.d: Likewise.
	* testsuite/ld-elfvsb/hidden2.d: Likewise.
	* testsuite/ld-frv/fdpic-pie-6.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-2.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-5.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-6.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-8.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-local-2.d: Likewise.
	* testsuite/ld-frv/fdpic-shared-local-8.d: Likewise.
	* testsuite/ld-frv/tls-dynamic-2.d: Likewise.
	* testsuite/ld-i386/ibt-plt-1.d: Likewise.
	* testsuite/ld-i386/ibt-plt-2a.d: Likewise.
	* testsuite/ld-i386/ibt-plt-2c.d: Likewise.
	* testsuite/ld-i386/ibt-plt-3a.d: Likewise.
	* testsuite/ld-i386/ibt-plt-3c.d: Likewise.
	* testsuite/ld-i386/pr20830.d: Likewise.
	* testsuite/ld-ia64/merge1.d: Likewise.
	* testsuite/ld-ia64/merge2.d: Likewise.
	* testsuite/ld-ia64/merge3.d: Likewise.
	* testsuite/ld-ia64/merge4.d: Likewise.
	* testsuite/ld-ia64/merge5.d: Likewise.
	* testsuite/ld-ifunc/ifunc-1-local-x86.d: Likewise.
	* testsuite/ld-ifunc/ifunc-1-x86.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-i386-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-local-x86-64.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-x86-64.d: Likewise.
	* testsuite/ld-ifunc/ifunc-3a-x86.d: Likewise.
	* testsuite/ld-ifunc/pr17154-i386-now.d: Likewise.
	* testsuite/ld-ifunc/pr17154-i386.d: Likewise.
	* testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/pr17154-x86-64.d: Likewise.
	* testsuite/ld-m68k/got-1.d: Likewise.
	* testsuite/ld-m68k/got-multigot-12-13-14-34-35-ok.d: Likewise.
	* testsuite/ld-m68k/got-multigot-14-ok.d: Likewise.
	* testsuite/ld-m68k/got-multigot-15-er.d: Likewise.
	* testsuite/ld-m68k/got-negative-12-13-14-34-ok.d: Likewise.
	* testsuite/ld-m68k/got-negative-12-13-14-35-er.d: Likewise.
	* testsuite/ld-m68k/got-negative-14-ok.d: Likewise.
	* testsuite/ld-m68k/got-negative-15-er.d: Likewise.
	* testsuite/ld-m68k/got-single-12-ok.d: Likewise.
	* testsuite/ld-m68k/got-single-13-er.d: Likewise.
	* testsuite/ld-m68k/got-xgot-12-13-14-15-34-35-ok.d: Likewise.
	* testsuite/ld-m68k/got-xgot-15-ok.d: Likewise.
	* testsuite/ld-m68k/tls-gd-1.d: Likewise.
	* testsuite/ld-m68k/tls-gd-2.d: Likewise.
	* testsuite/ld-m68k/tls-gd-ie-1.d: Likewise.
	* testsuite/ld-m68k/tls-ie-1.d: Likewise.
	* testsuite/ld-m68k/tls-ld-1.d: Likewise.
	* testsuite/ld-m68k/tls-ld-2.d: Likewise.
	* testsuite/ld-sh/shared-2.d: Likewise.
	* testsuite/ld-sh/tlsbin-2.d: Likewise.
	* testsuite/ld-sh/tlspic-2.d: Likewise.
	* testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-1.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-1.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-2c.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3a.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c-x32.d: Likewise.
	* testsuite/ld-x86-64/ibt-plt-3c.d: Likewise.
	* testsuite/ld-x86-64/ilp32-4-nacl.d: Likewise.
	* testsuite/ld-x86-64/ilp32-4.d: Likewise.
	* testsuite/ld-x86-64/load1c-nacl.d: Likewise.
	* testsuite/ld-x86-64/load1c.d: Likewise.
	* testsuite/ld-x86-64/load1d-nacl.d: Likewise.
	* testsuite/ld-x86-64/load1d.d: Likewise.
	* testsuite/ld-x86-64/pie3-nacl.d: Likewise.
	* testsuite/ld-x86-64/pie3.d: Likewise.
	* testsuite/ld-x86-64/pr14207.d: Likewise.
	* testsuite/ld-x86-64/pr19162.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1d.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1f.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1j.d: Likewise.
	* testsuite/ld-x86-64/pr20253-1l.d: Likewise.
	* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Likewise.
	* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830b.d: Likewise.
	* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038b.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2017-08-07 22:10:51 +09:30
H.J. Lu
f2c29a1692 x86-64: Rename .plt.bnd to .plt.sec 
Rename .plt.bnd to .plt.sec to indicate that this is used as the second
PLT section.  There is no change in run-time behavior.  We also scan the
.plt.sec section to synthesize PLT symbols.

bfd/

	* elf64-x86-64.c (elf_x86_64_link_hash_entry): Rename plt_bnd
	to plt_second.
	(elf_x86_64_link_hash_table): Rename plt_bnd/plt_bnd_eh_frame
	to plt_second/plt_second_eh_frame.
	(elf_x86_64_link_hash_newfunc): Updated.
	(elf_x86_64_allocate_dynrelocs): Likewise.
	(elf_x86_64_size_dynamic_sections): Likewise.
	(elf_x86_64_relocate_section): Likewise.
	(elf_x86_64_finish_dynamic_symbol): Likewise.
	(elf_x86_64_finish_dynamic_sections): Likewise.
	(elf_x86_64_plt_type): Rename plt_bnd to plt_second.
	(elf_x86_64_get_synthetic_symtab): Updated.  Also scan the
	.plt.sec section.
	(elf_backend_setup_gnu_properties): Updated.  Create the
	.plt.sec section instead of the .plt.sec section.

ld/

	* emulparams/elf_x86_64.sh (TINY_READONLY_SECTION): Replace
	.plt.bnd with .plt.sec.
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
	* testsuite/ld-x86-64/mpx3.dd: Likewise.
	* testsuite/ld-x86-64/mpx3n.dd: Likewise.
	* testsuite/ld-x86-64/mpx4.dd: Likewise.
	* testsuite/ld-x86-64/mpx4n.dd: Likewise.
	* testsuite/ld-x86-64/plt-main-bnd-now.rd: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038b.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2017-05-11 11:28:16 -07:00
H.J. Lu
38b123494b x86-64: Improve PLT generation and synthetic PLT symbols 
On x86-64, the procedure linkage table (PLT) is used to

1. Call external function.
2. Call internal IFUNC function.  The best implementation is selected
for the target processor at run-time.
3. Act as the canonical function address.
4. Support LD_AUDIT to audit external function calls.
5. Support LD_PROFILE to profile external function calls.

PLT looks like:

PLT0:  push  GOT[1]
       jmp   *GOT[2]
       nop
PLT1:  jmp   *GOT[name1_index]
       push  name1_reloc_index
       jmp   PLT0

GOT is an array of addresses.  Initially the GOT entry of name1 is
filled with the address of the "push name1_reloc_index" instruction.
The function, name1, is called via "jmp *GOT[name1]" in the PLT entry.
Even when lazy binding is disabled by "-z now", the PLT0 entry may
still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for
canonical function address.

When linker is invoked with "-z bndplt", a different PLT layout in .plt
is used:

PLT0:  push     GOT[1]
       bnd jmp  *GOT[2]
       nop
PLT1:  push     name1_reloc_index
       bnd jmp  PLT0
       nop

together with a second PLT section, .pl.bnd:

PLT1:  bnd jmp  *GOT[name1_index]
       nop

where the GOT entry of name1 is filled with the address of the push
instruction of the corresponding entry in .plt.

1. With lazy binding, when the external function, name1, is called the
first time, dynamic linker is called via PLT0 to update GOT[name1_index]
with the actual address of name1 and transfers control to name1
afterwards.
2. PLT is also used to call a local IFUNC function, name1, run-time
loader updates GOT[name1_index] when loading the module.

This patch

1. Remove PLT layout configurations from x86-64 backend_data.
2. Add generic, lay and non-lazy PLT layout configurations to x86-64
link_hash_table.  Generic PLT layout includes the PLT entry templates,
information how to update the first instruction in PLT and PLT eh_frame
informaton, which are initialized in x86-64 setup_gnu_properties, based
on "-z bndplt" and target selection.  PLT section alignment is also set
to PLT entry size for non-NaCl target.
3. Remove elf_x86_64_create_dynamic_sections.  create_dynamic_sections
isn't always called, but GOT relocations need GOT relocations.  Instead,
create all x86-64 specific dynamic sections with alignment to their entry
size  in x86-64 setup_gnu_properties, which initializes elf.dynobj, so
that x86-64 check_relocs can be simplified.
4. Rewrite elf_x86_64_get_synthetic_symtab to check PLT sections against
all dynamic relocations to support both lazy and non-lazy PLTs.

There is no change in PLT.  The only externally visible change is the
improvement of synthetic PLT symbols for .plt.got.

bfd/

	* elf64-x86-64.c (PLT_ENTRY_SIZE): Renamed to ...
	(LAZY_PLT_ENTRY_SIZE): This.
	(NON_LAZY_PLT_ENTRY_SIZE): New.
	(elf_x86_64_plt0_entry): Renamed to ...
	(elf_x86_64_lazy_plt0_entry): This.
	(elf_x86_64_plt_entry): Renamed to ...
	(elf_x86_64_lazy_plt_entry): This.
	(elf_x86_64_bnd_plt0_entry): Renamed to ...
	(elf_x86_64_lazy_bnd_plt0_entry): This.
	(elf_x86_64_legacy_plt_entry): Removed.
	(elf_x86_64_bnd_plt_entry): Renamed to ...
	(elf_x86_64_lazy_bnd_plt_entry): This.
	(elf_x86_64_legacy_plt2_entry): Renamed to ...
	(elf_x86_64_non_lazy_plt_entry): This.
	(elf_x86_64_bnd_plt2_entry): Renamed to ...
	(elf_x86_64_non_lazy_bnd_plt_entry): This.
	(elf_x86_64_eh_frame_plt): Renamed to ...
	(elf_x86_64_eh_frame_lazy_plt): This.
	(elf_x86_64_eh_frame_bnd_plt): Renamed to ...
	(elf_x86_64_eh_frame_lazy_bnd_plt): This.
	(elf_x86_64_eh_frame_plt_got): Renamed to ...
	(elf_x86_64_eh_frame_non_lazy_plt): This.
	(elf_x86_64_lazy_plt_layout): New.
	(elf_x86_64_non_lazy_plt_layout): Likewise.
	(elf_x86_64_plt_layout): Likewise.
	(elf_x86_64_backend_data): Remove PLT layout information.  Add
	os for target system.
	(GET_PLT_ENTRY_SIZE): Removed.
	(elf_x86_64_lazy_plt): New.
	(elf_x86_64_non_lazy_plt): Likewise.
	(elf_x86_64_lazy_bnd_plt): Likewise.
	(elf_x86_64_non_lazy_bnd_plt): Likewise.
	(elf_x86-64_arch_bed): Updated.
	(elf_x86_64_link_hash_table): Add plt, lazy_plt and non_lazy_plt.
	(elf_x86_64_create_dynamic_sections): Removed.
	(elf_x86_64_check_relocs): Don't check elf.dynobj.  Don't call
	_bfd_elf_create_ifunc_sections nor _bfd_elf_create_got_section.
	(elf_x86-64_adjust_dynamic_symbol): Updated.
	(elf_x86_64_allocate_dynrelocs): Updated.  Pass 0 as PLT header
	size to _bfd_elf_allocate_ifunc_dyn_relocs and don't allocate
	size for PLT0 if there is no PLT0.  Get plt_entry_size from
	non_lazy_plt for non-lazy PLT entries.
	(elf_x86_64_size_dynamic_sections): Updated.  Get plt_entry_size
	from non_lazy_plt for non-lazy PLT entries.
	(elf_x86-64_relocate_section): Updated.  Properly get PLT index
	if there is no PLT0.
	(elf_x86_64_finish_dynamic_symbol): Updated.  Fill the first slot
	in the PLT entry with generic PLT layout.  Fill the non-lazy PLT
	entries with non-lazy PLT layout.  Don't fill the second and third
	slots in the PLT entry if there is no PLT0.
	(elf_x86_64_finish_dynamic_sections): Updated.  Don't fill PLT0
	if there is no PLT0.  Set sh_entsize on the .plt.got section.
	(compare_relocs): New.
	(elf_x86_64_plt_type): Likewise.
	(elf_x86_64_plt): Likewise.
	(elf_x86_64_nacl_plt): New. Forward declaration.
	(elf_x86_64_get_plt_sym_val): Removed.
	(elf_x86_64_get_synthetic_symtab): Rewrite to check PLT sections
	against all dynamic relocations.
	(elf_x86_64_link_setup_gnu_properties): New function.
	(elf_backend_create_dynamic_sections): Updated.
	(elf_backend_setup_gnu_properties): New.
	(elf_x86_64_nacl_plt): New.
	(elf_x86_64_nacl_arch_bed): Updated.

ld/

	* testsuite/ld-ifunc/ifunc-16-x86-64-now.d: New file.
	* testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/ifunc-2-x86-64-now.d: Likewise.
	* testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
	* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
	* testsuite/ld-x86-64/mpx3n.dd: Likewise.
	* testsuite/ld-x86-64/mpx4n.dd: Likewise.
	* testsuite/ld-x86-64/plt-main-bnd-now.rd: Likewise.
	* testsuite/ld-x86-64/plt2.dd: Likewise.
	* testsuite/ld-x86-64/plt2.rd: Likewise.
	* testsuite/ld-x86-64/plt2.s: Likewise.
	* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
	* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
	* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
	* testsuite/ld-x86-64/load1b-nacl.d: Updated.
	* testsuite/ld-x86-64/load1b.d: Likewise.
	* testsuite/ld-x86-64/plt-main-bnd.dd: Likewise.
	* testsuite/ld-x86-64/pr20253-1h.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Update the .plt.got section
	with func@plt.
	* testsuite/ld-x86-64/pr20830b.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
	* testsuite/ld-x86-64/mpx.exp: Add some -z now tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
 2017-05-08 12:24:29 -07:00
H.J. Lu
de9a3c4285 x86: Create dynamic sections in create_dynamic_sections 
This patch creates dynamic sections in i386/x86-64 create_dynamic_sections
instead of creating them on demend.  Linker will strip them if they are
empty.  It changes order in x86-64 .eh_frame section.  The extra DW_CFA_nop
paddings is due to

https://sourceware.org/bugzilla/show_bug.cgi?id=21441

bfd/

	* elf32-i386.c (elf_i386_create_dynamic_sections): Create the
	.plt.got section here.
	(elf_i386_check_relocs): Don't create the .plt.got section.
	* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Create
	the .plt.got and .plt.bnd sections here.
	(elf_x86_64_check_relocs): Don't create the .plt.got nor
	.plt.bnd sections.

ld/

	* testsuite/ld-x86-64/pr21038a.d: Update DW_CFA_nop paddings
	in .eh_frame section.
	* testsuite/ld-x86-64/pr21038c.d: Update .eh_frame order.
 2017-04-27 13:55:48 -07:00
Alan Modra
2e0ce1c84d Align eh_frame FDEs according to their encoding 
bfd/
	* elf-bfd.h (struct eh_cie_fde): Add u.cie.per_encoding_aligned8.
	* elf-eh-frame.c (size_of_output_cie_fde): Don't align here.
	(next_cie_fde_offset): New function.
	(_bfd_elf_parse_eh_frame): Set u.cie.per_encoding_aligned8.
	(_bfd_elf_discard_section_eh_frame): Align zero terminator to
	four bytes.  Align CIEs to four or eight bytes depending on
	per_encoding_aligned8.  Align FDEs according to their encoding.
	Pad last FDE to output section alignment.
	(_bfd_elf_write_section_eh_frame): Adjust to suit.  Remove
	assertion.
	* elf64-ppc.c (glink_eh_frame_cie): Delete padding.
	(ppc64_elf_size_stubs): Pad glink eh_frame as per elf-eh-frame.c.
	(ppc64_elf_finish_dynamic_sections): Adjust to suit.
ld/
	* testsuite/ld-elf/eh3.d: Adjust for eh_frame alignment change.
	* testsuite/ld-elf/eh6.d: Likewise.
	* testsuite/ld-alpha/tlsbin.dd: Likewise.
	* testsuite/ld-alpha/tlsbin.td: Likewise.
	* testsuite/ld-alpha/tlsbinr.dd: Likewise.
	* testsuite/ld-alpha/tlspic.dd: Likewise.
	* testsuite/ld-alpha/tlspic.rd: Likewise.
	* testsuite/ld-alpha/tlspic.sd: Likewise.
	* testsuite/ld-alpha/tlspic.td: Likewise.
	* testsuite/ld-mips-elf/eh-frame1-n64.d: Likewise.
	* testsuite/ld-mips-elf/eh-frame2-n64.d: Likewise.
	* testsuite/ld-mips-elf/eh-frame3.d: Likewise.
	* testsuite/ld-x86-64/pr20830a.d: Likewise.
	* testsuite/ld-x86-64/pr21038a.d: Likewise.
	* testsuite/ld-x86-64/pr21038b.d: Likewise.
	* testsuite/ld-x86-64/pr21038c.d: Likewise.
 2017-03-05 14:49:54 +10:30
H.J. Lu
8361ed4d6b x86-64: Also generate unwind info for .plt.bnd 
Also generate unwind info for the .plt.bnd section.  Sine it is the same
as unwind info for the .plt.got section, we use unwind info for the
.plt.got section to cover the the .plt.bnd section.

bfd/

	PR ld/21038
	* elf64-x86-64.c (elf_x86_64_link_hash_table): Add
	plt_bnd_eh_frame.
	(elf_x86_64_check_relocs): Create .eh_frame section for the
	.plt.bnd section.
	(elf_x86_64_size_dynamic_sections): Allocate and initialize
	.eh_frame section for the .plt.bnd section.
	(elf_x86_64_finish_dynamic_sections): Adjust .eh_frame section
	for the .plt.bnd section.

ld/

	PR ld/21038
	* testsuite/ld-x86-64/pr21038b.d: Updated.
	* testsuite/ld-x86-64/pr21038c.d: New file.
	* testsuite/ld-x86-64/pr21038c.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run pr21038c.
 2017-01-12 10:32:17 -08:00