binutils-gdb

History

H.J. Lu dd7e64d45b Optimize out i386/x86-64 JUMP_SLOT relocation When there are both PLT and GOT references to the same function symbol, linker will create a GOTPLT slot for PLT entry and a GOT slot for GOT reference. A run-time JUMP_SLOT relocation is created to update the GOTPLT slot and a run-time GLOB_DAT relocation is created to update the GOT slot. Both JUMP_SLOT and GLOB_DAT relocations will apply the same symbol value to GOTPLT and GOT slots, respectively, at run-time. This optimization combines GOTPLT and GOT slots into a single GOT slot and removes the run-time JUMP_SLOT relocation. It replaces the regular PLT entry: indirect jump [GOTPLT slot] push relocation index jump PLT0 with an GOT PLT entry with an indirect jump via the GOT slot: indirect jump [GOT slot] nop and resolves PLT reference to the GOT PLT entry. We must avoid this optimization if pointer equality is needed since we don't clear symbol value in this case and the dynamic linker won't update the GOT slot. Otherwise, the resulting binary will get into an infinite loop at run-time. bfd/ * elf32-i386.c (elf_i386_got_plt_entry): New. (elf_i386_pic_got_plt_entry): Likewise. (elf_i386_link_hash_entry): Add plt_got. (elf_i386_link_hash_table): Likewise. (elf_i386_link_hash_newfunc): Initialize plt_got.offset to -1. (elf_i386_get_local_sym_hash): Likewise. (elf_i386_check_relocs): Create the GOT PLT if there are both PLT and GOT references when the regular PLT is used. (elf_i386_allocate_dynrelocs): Use the GOT PLT if there are both PLT and GOT references unless pointer equality is needed. (elf_i386_relocate_section): Also check the GOT PLT when resolving R_386_PLT32. (elf_i386_finish_dynamic_symbol): Use the GOT PLT if it is available. * elf64-x86-64.c (elf_x86_64_link_hash_entry): Add plt_got. (elf_x86_64_link_hash_table): Likewise. (elf_x86_64_link_hash_newfunc): Initialize plt_got.offset to -1. (elf_x86_64_get_local_sym_hash): Likewise. (elf_x86_64_check_relocs): Create the GOT PLT if there are both PLT and GOT references when the regular PLT is used. (elf_x86_64_allocate_dynrelocs): Use the GOT PLT if there are both PLT and GOT references unless pointer equality is needed. (elf_x86_64_relocate_section): Also check the GOT PLT when resolving R_X86_64_PLT32. (elf_x86_64_finish_dynamic_symbol): Use the GOT PLT if it is available. ld/ * emulparams/elf_i386.sh (TINY_READONLY_SECTION): New. * emulparams/elf_x86_64.sh (TINY_READONLY_SECTION): Add .plt.got. ld/testsuite/ * ld-i386/i386.exp: Add run-time relocation tests for plt-main. * ld-i386/plt-main.rd: New file. * ld-x86-64/plt-main-bnd.dd: Likewise. * ld-x86-64/plt-main.rd: Likewise. * ld-x86-64/x86-64.exp: Add run-time relocation tests for plt-main.		2014-11-25 05:05:39 -08:00
..
README	Update copyright years	2014-03-05 22:16:15 +10:30
aarch64elf.sh	aarch64: Add support for GNU indirect functions.	2013-10-03 14:46:09 +00:00
aarch64elf32.sh	ld/ChangeLog:	2013-11-21 11:17:50 -08:00
aarch64elf32b.sh	[AArch64, ILP32] 6/6 Add big-endian targets	2013-06-26 10:56:05 +00:00
aarch64elfb.sh	Add support for 64-bit ARM architecture: AArch64	2012-08-13 14:52:54 +00:00
aarch64linux.sh	[AArch64] Define LP64 LE loader name.	2014-01-20 18:18:52 +00:00
aarch64linux32.sh	2014-02-11 Andrew Pinski <apinski@cavium.com>	2014-02-11 11:16:30 -08:00
aarch64linux32b.sh	2014-02-11 Andrew Pinski <apinski@cavium.com>	2014-02-11 11:16:30 -08:00
aarch64linuxb.sh	[AArch64] Define LP64 BE linker name.	2014-01-20 18:20:04 +00:00
aix5ppc.sh	…
aix5rs6.sh	…
aixppc.sh	…
aixrs6.sh	…
alpha.sh	…
alphavms.sh	2010-04-14 Tristan Gingold <gingold@adacore.com>	2010-04-14 09:27:27 +00:00
arcelf.sh	…
arm_epoc_pe.sh	…
arm_wince_pe.sh	…
armaoutb.sh	…
armaoutl.sh	…
armcoff.sh	…
armelf.sh	ld/	2009-11-20 15:04:51 +00:00
armelf_fbsd.sh	* emulparams/armelf_fbsd.sh (TEXT_START_ADDR): Increase alignment to 64kB boundary like in armelf_linux.sh	2014-08-22 06:33:45 +02:00
armelf_linux.sh	ld/ARM: Increase maximum page size to 64kB	2014-07-08 15:00:12 +01:00
armelf_linux_eabi.sh	ld/	2009-11-20 15:04:51 +00:00
armelf_nacl.sh	* elf32-arm.c (elf32_arm_nacl_plt0_entry, elf32_arm_nacl_plt_entry):	2012-04-12 13:01:15 +00:00
armelf_nbsd.sh	…
armelf_vxworks.sh	…
armelfb.sh	…
armelfb_fbsd.sh	ld/ARM: Add target armb--freebsd, update target arm--freebsd.	2014-06-18 21:58:19 +02:00
armelfb_linux.sh	…
armelfb_linux_eabi.sh	…
armelfb_nacl.sh	* elf32-arm.c (elf32_arm_nacl_plt0_entry, elf32_arm_nacl_plt_entry):	2012-04-12 13:01:15 +00:00
armelfb_nbsd.sh	…
armnbsd.sh	…
armnto.sh	…
armpe.sh	…
armsymbian.sh	ld/	2009-11-20 15:04:51 +00:00
avr1.sh	…
avr2.sh	…
avr3.sh	…
avr4.sh	…
avr5.sh	…
avr6.sh	…
avr25.sh	…
avr31.sh	…
avr35.sh	…
avr51.sh	…
avrtiny.sh	Add support for the AVR Tiny series of microcontrollers.	2014-07-01 10:20:17 +01:00
avrxmega1.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega2.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega3.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega4.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega5.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega6.sh	/bfd:	2011-03-22 18:10:48 +00:00
avrxmega7.sh	/bfd:	2011-03-22 18:10:48 +00:00
coff_i860.sh	…
coff_sparc.sh	…
crisaout.sh	…
criself.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
crislinux.sh	* emulparams/crislinux.sh (COMMONPAGESIZE): Define.	2014-01-10 01:25:26 +01:00
d10velf.sh	…
d30v_e.sh	…
d30v_o.sh	…
d30velf.sh	…
delta68.sh	…
elf32_dlx.sh	…
elf32_i860.sh	…
elf32_i960.sh	…
elf32_sparc.sh	* emulparams/elf32_sparc.sh: Set NOP to 0x01000000	2010-09-20 18:41:15 +00:00
elf32_sparc_sol2.sh	ld:	2010-10-22 12:08:32 +00:00
elf32_sparc_vxworks.sh	…
elf32_spu.sh	…
elf32_tic6x_be.sh	bfd:	2010-03-25 21:12:36 +00:00
elf32_tic6x_elf_be.sh	ld/	2011-05-13 18:15:33 +00:00
elf32_tic6x_elf_le.sh	ld/	2011-05-13 18:15:33 +00:00
elf32_tic6x_le.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf32_tic6x_linux_be.sh	ld/	2011-05-13 18:15:33 +00:00
elf32_tic6x_linux_le.sh	ld/	2011-05-13 18:15:33 +00:00
elf32_x86_64.sh	Skip directories with LIBPATH_SUFFIX_SKIP suffix	2014-01-15 20:09:09 -08:00
elf32_x86_64_nacl.sh	bfd/	2013-08-26 22:18:07 +00:00
elf32am33lin.sh	…
elf32b4300.sh	…
elf32bfin.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
elf32bfinfd.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
elf32bmip.sh	[MIPS] Implement O32 FPXX, FP64 and FP64A ABI extensions	2014-07-29 11:27:59 +01:00
elf32bmipn32-defs.sh	[MIPS] Implement O32 FPXX, FP64 and FP64A ABI extensions	2014-07-29 11:27:59 +01:00
elf32bmipn32.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32bsmip.sh	…
elf32btsmip.sh	bfd/	2013-06-24 23:55:46 +00:00
elf32btsmip_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf32btsmipn32.sh	…
elf32btsmipn32_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf32cr16.sh	…
elf32cr16c.sh	…
elf32crx.sh	…
elf32ebmip.sh	…
elf32ebmipvxworks.sh	…
elf32elmip.sh	…
elf32elmipvxworks.sh	…
elf32epiphany.sh	bfd:	2011-10-25 11:18:16 +00:00
elf32epiphany_4x4.sh	* scripttempl/epiphany_4x4.sc, emulparams/elf32epiphany_4x4.sh: Add.	2012-11-30 18:28:38 +00:00
elf32fr30.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32frv.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32frvfd.sh	…
elf32i370.sh	…
elf32ip2k.sh	…
elf32iq10.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32iq2000.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32l4300.sh	…
elf32lm32.sh	…
elf32lm32fd.sh	…
elf32lmip.sh	…
elf32lppc.sh	bfd/	2013-04-25 13:22:52 +00:00
elf32lppclinux.sh	bfd/	2013-04-25 13:22:52 +00:00
elf32lppcnto.sh	…
elf32lppcsim.sh	…
elf32lr5900.sh	* archures.c: Add support for MIPS r5900	2013-01-04 17:22:53 +00:00
elf32lr5900n32.sh	* archures.c: Add support for MIPS r5900	2013-01-04 17:22:53 +00:00
elf32lsmip.sh	…
elf32ltsmip.sh	…
elf32ltsmip_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf32ltsmipn32.sh	…
elf32ltsmipn32_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf32m32c.sh	…
elf32mb_linux.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf32mbel_linux.sh	Files missing from previous commit.	2012-11-09 22:43:28 +00:00
elf32mcore.sh	* ldmain.c (main): Flush stdout before and stderr after printing	2011-01-14 12:37:17 +00:00
elf32mep.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf32metag.sh	* common.h: Fix case of "Meta".	2013-01-10 09:49:22 +00:00
elf32microblaze.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf32microblazeel.sh	Files missing from previous commit.	2012-11-09 22:43:28 +00:00
elf32mipswindiss.sh	ld/	2012-08-06 22:40:36 +00:00
elf32moxie.sh	Bi-endian patches for moxie	2012-09-13 22:24:51 +00:00
elf32mt.sh	…
elf32or1k.sh	Remove support for the (deprecated) openrisc and or32 configurations and replace	2014-04-22 15:57:47 +01:00
elf32or1k_linux.sh	or1k: increase linux TEXT_START_ADDR to 0x2000	2014-07-17 00:26:45 +03:00
elf32ppc.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf32ppc_fbsd.sh	* Makefile.am (ALL_64_EMULATION_SOURCES): Add powerpc64-*-freebsd	2011-11-21 13:22:46 +00:00
elf32ppccommon.sh	Rewrite ppc32 backend .sdata and .sdata2 handling	2014-05-20 13:13:23 +09:30
elf32ppclinux.sh	…
elf32ppcnto.sh	…
elf32ppcsim.sh	…
elf32ppcvxworks.sh	Fix ELF ppc32 targets that don't use ppc32elf.em	2014-02-27 23:39:01 +10:30
elf32ppcwindiss.sh	…
elf32rl78.sh	[.]	2011-11-02 03:09:11 +00:00
elf32rx.sh	* emulparams/elf32rx.sh (OTHER_READONLY_SECTIONS): Add W_* sections.	2012-09-12 21:28:04 +00:00
elf32tilegx.sh	Don't hardcode .got.plt into DATA_SEGMENT_RELRO_END evaluation	2012-06-11 13:23:51 +00:00
elf32tilegx_be.sh	Add big-endian support for tilegx.	2012-02-25 19:51:34 +00:00
elf32tilepro.sh	Don't hardcode .got.plt into DATA_SEGMENT_RELRO_END evaluation	2012-06-11 13:23:51 +00:00
elf32vax.sh	…
elf32xc16x.sh	…
elf32xc16xl.sh	…
elf32xc16xs.sh	…
elf32xstormy16.sh	…
elf32xtensa.sh	…
elf64_aix.sh	…
elf64_ia64.sh	…
elf64_ia64_fbsd.sh	…
elf64_ia64_vms.sh	* configure.ac (ia64--vms): Add support for ld.	2012-04-12 07:35:07 +00:00
elf64_s390.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf64_sparc.sh	…
elf64_sparc_fbsd.sh	…
elf64_sparc_sol2.sh	ld:	2010-10-22 12:08:32 +00:00
elf64alpha.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf64alpha_fbsd.sh	…
elf64alpha_nbsd.sh	…
elf64bmip-defs.sh	[MIPS] Implement O32 FPXX, FP64 and FP64A ABI extensions	2014-07-29 11:27:59 +01:00
elf64bmip.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf64btsmip.sh	…
elf64btsmip_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf64hppa.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
elf64lppc.sh	…
elf64ltsmip.sh	…
elf64ltsmip_fbsd.sh	bfd/	2010-12-31 11:01:00 +00:00
elf64mmix.sh	…
elf64ppc.sh	* emulparams/elf32ppccommon.sh (LIBPATH_SUFFIX): Provide 32-bit	2013-09-24 06:29:39 +00:00
elf64ppc_fbsd.sh	* Makefile.am (ALL_64_EMULATION_SOURCES): Add powerpc64-*-freebsd	2011-11-21 13:22:46 +00:00
elf64rdos.sh	* Makefile.am (ALL_64_EMULATION_SOURCES): Add eelf64rdos.c.	2013-01-23 10:31:13 +00:00
elf64tilegx.sh	Don't hardcode .got.plt into DATA_SEGMENT_RELRO_END evaluation	2012-06-11 13:23:51 +00:00
elf64tilegx_be.sh	Add big-endian support for tilegx.	2012-02-25 19:51:34 +00:00
elf_fbsd.sh	…
elf_i386.sh	Optimize out i386/x86-64 JUMP_SLOT relocation	2014-11-25 05:05:39 -08:00
elf_i386_be.sh	Support arch-dependent fill	2012-01-31 17:54:39 +00:00
elf_i386_chaos.sh	* emultempl/elf32.em (gld${EMULATION_NAME}_add_options,	2011-07-14 02:38:43 +00:00
elf_i386_fbsd.sh	…
elf_i386_ldso.sh	Support arch-dependent fill	2012-01-31 17:54:39 +00:00
elf_i386_nacl.sh	bfd/	2013-08-26 22:18:07 +00:00
elf_i386_sol2.sh	* emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed	2010-10-12 18:39:36 +00:00
elf_i386_vxworks.sh	Support arch-dependent fill	2012-01-31 17:54:39 +00:00
elf_k1om.sh	Define IREL_IN_PLT for elf_k1om.sh and elf_l1om.sh	2013-12-20 08:27:02 -08:00
elf_k1om_fbsd.sh	Add initial Intel K1OM support.	2011-07-22 20:22:38 +00:00
elf_l1om.sh	Define IREL_IN_PLT for elf_k1om.sh and elf_l1om.sh	2013-12-20 08:27:02 -08:00
elf_l1om_fbsd.sh	…
elf_nacl.sh	ld/	2013-08-23 22:38:42 +00:00
elf_s390.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
elf_x86_64.sh	Optimize out i386/x86-64 JUMP_SLOT relocation	2014-11-25 05:05:39 -08:00
elf_x86_64_fbsd.sh	…
elf_x86_64_nacl.sh	bfd/	2013-08-26 22:18:07 +00:00
elf_x86_64_sol2.sh	* emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed	2010-10-12 18:39:36 +00:00
gld960.sh	…
gld960coff.sh	…
h8300.sh	…
h8300elf.sh	…
h8300h.sh	…
h8300helf.sh	…
h8300hn.sh	…
h8300hnelf.sh	…
h8300s.sh	…
h8300self.sh	…
h8300sn.sh	…
h8300snelf.sh	…
h8300sx.sh	…
h8300sxelf.sh	…
h8300sxn.sh	…
h8300sxnelf.sh	…
h8500.sh	…
h8500b.sh	…
h8500c.sh	…
h8500m.sh	…
h8500s.sh	…
hp3hpux.sh	…
hp300bsd.sh	…
hppa64linux.sh	…
hppaelf.sh	…
hppalinux.sh	PR ld/12376	2011-02-18 18:20:29 +00:00
hppanbsd.sh	…
hppaobsd.sh	…
i386aout.sh	…
i386beos.sh	strip off +x bits on non-executable/script files	2013-12-07 02:03:03 -05:00
i386bsd.sh	…
i386coff.sh	…
i386go32.sh	…
i386linux.sh	…
i386lynx.sh	…
i386mach.sh	…
i386moss.sh	…
i386msdos.sh	…
i386nbsd.sh	…
i386nto.sh	…
i386nw.sh	…
i386pe.sh	Remove remaining default manifest support.	2014-04-09 17:12:30 +01:00
i386pe_posix.sh	…
i386pep.sh	Remove remaining default manifest support.	2014-04-09 17:12:30 +01:00
lnk960.sh	…
m32relf.sh	…
m32relf_linux.sh	…
m32rlelf.sh	…
m32rlelf_linux.sh	…
m68hc11elf.sh	…
m68hc11elfb.sh	…
m68hc12elf.sh	…
m68hc12elfb.sh	…
m68k4knbsd.sh	…
m68kaout.sh	…
m68kaux.sh	…
m68kcoff.sh	…
m68kelf.sh	…
m68kelfnbsd.sh	…
m68klinux.sh	…
m68knbsd.sh	…
m68kpsos.sh	…
m88kbcs.sh	…
mcorepe.sh	…
mmo.sh	…
mn10200.sh	…
mn10300.sh	…
moxiebox.sh	Add moxiebox target	2014-07-27 08:51:20 -04:00
msp430.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
msp430X.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
nds32belf.sh	Add support for Andes NDS32:	2013-12-13 11:52:32 +00:00
nds32belf16m.sh	Add support for Andes NDS32:	2013-12-13 11:52:32 +00:00
nds32belf_linux.sh	Add support for Andes NDS32:	2013-12-13 11:52:32 +00:00
nds32elf.sh	Allow ld target customiser script to force on disk scripts.	2014-01-17 10:41:49 +10:30
nds32elf16m.sh	Allow ld target customiser script to force on disk scripts.	2014-01-17 10:41:49 +10:30
nds32elf_linux.sh	Allow ld target customiser script to force on disk scripts.	2014-01-17 10:41:49 +10:30
news.sh	…
nios2elf.sh	Nios II CALL26 linker relaxation	2014-01-30 17:47:07 -08:00
nios2linux.sh	2014-05-11 Chung-Lin Tang <cltang@codesourcery.com>	2014-05-11 10:04:45 -07:00
ns32knbsd.sh	…
pc532macha.sh	…
pdp11.sh	…
pjelf.sh	…
pjlelf.sh	…
plt_unwind.sh	* emultempl/elf32.em (gld${EMULATION_NAME}_add_options,	2011-07-14 02:38:43 +00:00
ppclynx.sh	…
ppcmacos.sh	…
ppcnw.sh	…
ppcpe.sh	…
riscix.sh	…
score3_elf.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
score7_elf.sh	fix 2014-05-28 ld Makefile.am changes	2014-06-02 14:52:52 +09:30
sh.sh	…
shelf.sh	…
shelf32.sh	…
shelf32_linux.sh	…
shelf32_nbsd.sh	…
shelf64.sh	…
shelf64_nbsd.sh	…
shelf_fd.sh	2010-05-21 Daniel Jacobowitz <dan@codesourcery.com>	2010-05-25 14:12:43 +00:00
shelf_linux.sh	…
shelf_nbsd.sh	…
shelf_nto.sh	…
shelf_uclinux.sh	…
shelf_vxworks.sh	…
shl.sh	…
shlelf.sh	…
shlelf32.sh	…
shlelf32_linux.sh	…
shlelf32_nbsd.sh	…
shlelf64.sh	…
shlelf64_nbsd.sh	…
shlelf_fd.sh	2010-05-21 Daniel Jacobowitz <dan@codesourcery.com>	2010-05-25 14:12:43 +00:00
shlelf_linux.sh	2010-05-21 Daniel Jacobowitz <dan@codesourcery.com>	2010-05-25 14:12:43 +00:00
shlelf_nbsd.sh	…
shlelf_nto.sh	…
shlelf_vxworks.sh	…
shlsymbian.sh	…
shpe.sh	…
solaris2.sh	* emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed	2010-10-12 18:39:36 +00:00
sparcaout.sh	…
sparclinux.sh	…
sparcnbsd.sh	…
st2000.sh	…
sun3.sh	…
sun4.sh	…
tic3xcoff.sh	…
tic3xcoff_onchip.sh	…
tic4xcoff.sh	…
tic30aout.sh	…
tic30coff.sh	…
tic54xcoff.sh	…
tic80coff.sh	Remove trailing white spaces in ld	2013-01-10 20:08:03 +00:00
v850.sh	…
v850_rh850.sh	2012-11-09 Nick Clifton <nickc@redhat.com>	2012-11-09 17:36:19 +00:00
vanilla.sh	…
vax.sh	…
vaxnbsd.sh	…
vsta.sh	…
vxworks.sh	…
w65.sh	…
xgateelf.sh	Add support for Motorola XGATE embedded CPU	2012-05-03 13:12:08 +00:00
z80.sh	…
z8001.sh	…
z8002.sh	…

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