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H.J. Lu 5c3261b0e8 ELF: Call check_relocs after opening all inputs 
For all ELF targers, call check_relocs after opening all inputs and
garbage collection.  Since the symbol resolution is known, check_relocs
can be simplified.  Also garbage collection doesn't need to undo what
check_relocs has done for symbols which have been garbage collected.
Since ELF targets never see the removed sections, gc_sweep_hook can be
removed from elf_backend_data and we can avoid GOT/PLT with garbage
collection now.

Set link_info.check_relocs_after_open_input to TRUE for all linker
targets which use ELF linker and update garbage collection tests to
remove unused GOT section.

ldemul_after_check_relocs is added for powerpc to support --secure-plt,
--bss-plt and --sdata-got.

Tested natively without regressions on i686, x86-64 and x32.  Tested
cross binutils on x86-64 without regressions for aarch64-linux,
alpha-linux, arm-linux, bfin-elf, cr16-elf, cris-elf, crx-elf, frv-linux,
hppa64-linux, hppa-linux, ia64-linux, lm32-elf, m32r-elf, m68k-linux,
mcore-elf, metag-elf, microblaze-linux, mips-linux, mmix, mn10300-elf,
nds32le-linux, nios2-linux, or1k-elf, powerpc64-linux, powerpc-linux,
riscv32-linux, riscv64-linux, s390-linux, s390x-linux, score-elf,
sh3-linux, sparc64-linux, sparc-linux, tic6x-elf, tilegx-linux,
tilepro-linux, vax-linux, x86_64-mingw32 and xtensa-linux.

bfd/

	* elf-bfd.h (elf_backend_data): Remove gc_sweep_hook.
	* elf32-arm.c (elf32_arm_gc_sweep_hook): Removed.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-bfin.c (bfin_gc_sweep_hook): Likewise.
	(bfinfdpic_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-cr16.c (elf32_cr16_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-cris.c (cris_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-hppa.c (elf32_hppa_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-lm32.c (lm32_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-m32r.c (m32r_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-m68k.c (elf_m68k_got_entry): Remove elf_m68k_gc_sweep_hook
	from comments.
	(elf_m68k_remove_got_entry_type): Removed.
	(elf_m68k_find_got_entry_ptr): Likewise.
	(elf_m68k_remove_got_entry): Likewise.
	(elf_m68k_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-mcore.c (mcore_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-metag.c (elf_metag_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-microblaze.c (elf_backend_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-mips.c (elf_backend_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-nds32.c (nds32_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-nios2.c (nios2_elf32_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-or1k.c (or1k_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-ppc.c (ppc_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-s390.c (elf_s390_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-sparc.c (elf_backend_gc_sweep_hook): Likewise.
	* elf32-tic6x.c (elf32_tic6x_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
	* elf32-tilepro.c (tilepro_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-vax.c (elf_vax_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf64-alpha.c (elf64_alpha_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf64-mips.c (elf_backend_gc_sweep_hook): Likewise.
	* elf64-mmix.c (mmix_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf64-ppc.c (elf_backend_gc_sweep_hook): Likewise.
	(ppc64_elf_gc_sweep_hook): Likewise.
	* elf64-s390.c (elf_s390_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elf64-sparc.c (elf_backend_gc_sweep_hook): Likewise.
	* elf64-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
	* elflink.c (elf_link_add_object_symbols): Don't call
	_bfd_elf_link_check_relocs here.
	(gc_sweep_hook_fn): Removed.
	(elf_gc_sweep): Remove gc_sweep_hook.
	* elfnn-aarch64.c (elfNN_aarch64_gc_sweep_hook): Removed.
	(elf_backend_gc_sweep_hook): Likewise.
	* elfnn-riscv.c (riscv_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_gc_sweep_hook): Likewise.
	* elfxx-mips.h (_bfd_mips_elf_gc_sweep_hook): Likewise.
	(elf_backend_gc_sweep_hook): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_gc_sweep_hook): Likewise.
	* elfxx-sparc.h (_bfd_sparc_elf_gc_sweep_hook): Likewise.
	* elfxx-target.h (elf_backend_gc_sweep_hook): Likewise.
	(elfNN_bed): Remove elf_backend_gc_sweep_hook.
	* elfxx-tilegx.c (tilegx_elf_gc_sweep_hook): Removed.
	* elfxx-tilegx.h (tilegx_elf_gc_sweep_hook): Likewise.

ld/

	* emulparams/elf32_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Removed.
	* emulparams/elf_i386_be.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_i386_chaos.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_i386_ldso.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_i386_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_iamcu.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_k1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_l1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/elf_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/i386lynx.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/i386moss.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/i386nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/i386nw.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shelf.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shelf32.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shelf_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shlelf32_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shlelf_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emulparams/shlelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
	Likewise.
	* emultempl/aarch64elf.em (gld${EMULATION_NAME}_before_parse):
	Set link_info.check_relocs_after_open_input to TRUE.
	* emultempl/armelf.em (gld${EMULATION_NAME}_before_parse):
	Likewise.
	* emultempl/scoreelf.em (gld${EMULATION_NAME}_before_parse):
	Likewise.
	* emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add
	after_parse_default.
	* emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/gld960.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/gld960c.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/lnk960.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/m68kcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/sunos.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/vanilla.em (ld_${EMULATION_NAME}_emulation): Likewise.
	* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Always
	set link_info.check_relocs_after_open_input to TRUE.
	(ld_${EMULATION_NAME}_emulation): Add $LDEMUL_AFTER_CHECK_RELOCS.
	* emultempl/linux.em (gld${EMULATION_NAME}_before_parse):
	Set link_info.check_relocs_after_open_input to TRUE.
	(ld_${EMULATION_NAME}_emulation): Add after_check_relocs_default.
	* emultempl/mmix-elfnmmo.em (mmix_before_parse): New function.
	(LDEMUL_BEFORE_PARSE): New.
	* emultempl/mmixelf.em (elfmmix_before_parse): Replace
	gld${EMULATION_NAME}_before_parse with mmix_before_parse.
	* emultempl/ppc32elf.em (ppc_after_open): Renamed to ...
	(ppc_after_check_relocs): This.  Call after_check_relocs_default
	instead of gld${EMULATION_NAME}_after_open.
	(LDEMUL_AFTER_OPEN): Removed.
	(LDEMUL_AFTER_CHECK_RELOCS): New.
	* ldemul.c (ldemul_after_check_relocs): New.
	(after_check_relocs_default): Likewise.
	* ldemul.h (ldemul_after_check_relocs): Likewise.
	(after_check_relocs_default): Likewise.
	(ld_emulation_xfer_struct): Add after_check_relocs.
	* ldlang.c (lang_process): Call ldemul_after_check_relocs after
	lang_check_relocs.
	* testsuite/ld-aarch64/gc-got-relocs.d: Don't expect GOT section.
	* testsuite/ld-aarch64/gc-tls-relocs.d: Likewise.
	* testsuite/ld-cris/tls-gc-68.d: Likewise.
	* testsuite/ld-cris/tls-gc-69.d: Likewise.
	* testsuite/ld-cris/tls-gc-70.d: Likewise.
	* testsuite/ld-cris/tls-gc-75.d: Likewise.
	* testsuite/ld-cris/tls-gc-79.d: Likewise.
	* testsuite/ld-mmix/bpo-10.d: Don't expect .MMIX.reg_contents
	section.
 		2017-10-16 03:50:13 -07:00
..
README Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
aarch64elf.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
aix.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
alphaelf.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
arclinux.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
armcoff.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
armelf.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
astring.sed * emultempl/ostring.sed: Rename from stringify.sed. 1999-08-06 22:46:03 +00:00
avrelf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
beos.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
bfin.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
cr16elf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
crxelf.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
elf-generic.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
elf32.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
epiphanyelf_4x4.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
genelf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
generic.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
gld960.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
gld960c.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
hppaelf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
ia64elf.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
irix.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
linux.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
lnk960.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
m68hc1xelf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
m68kcoff.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
m68kelf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
metagelf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
mipself.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
mmix-elfnmmo.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
mmixelf.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
mmo.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
msp430.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
nds32elf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
needrelax.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
netbsd.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
nios2elf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
ostring.sed * emultempl/ostring.sed: Rename from stringify.sed. 1999-08-06 22:46:03 +00:00
pe.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
pep.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
ppc32elf.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
ppc64elf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
pruelf.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
riscvelf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
rxelf.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
s390.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
scoreelf.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
sh64elf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
solaris2.em Solaris2/LD: Fix anonymous version script acceptance bug 2017-01-24 12:53:52 +00:00
spu_icache.S bfd/ 2009-03-17 12:46:19 +00:00
spu_icache.o_c Regenerate spu overlay and icache manager files 2014-11-04 22:36:13 +10:30
spu_ovl.S ld whitespace fixes 2017-10-12 23:30:43 +10:30
spu_ovl.o_c Regenerate spu_ovl.o_c 2016-10-15 12:53:57 +10:30
spuelf.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
sunos.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
tic6xdsbt.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
ticoff.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
v850elf.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
vanilla.em ELF: Call check_relocs after opening all inputs 2017-10-16 03:50:13 -07:00
vms.em ld whitespace fixes 2017-10-12 23:30:43 +10:30
vxworks.em ld internationalization fixes 2017-10-11 15:04:59 +10:30
xtensaelf.em Fix assertion failure for xtensa linker. 2017-08-02 11:48:07 +01:00
z80.em Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30

README

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The files in this directory are sourced by genscripts.sh, after
setting some variables to substitute in, to produce
C source files that contain jump tables for each emulation.

Copyright (C) 2012-2017 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.