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caa65211bb
binutils-gdb/ld/emulparams
History
H.J. Lu caa65211bb Add "-z call-nop=PADDING" option to ld 
The ld linker can transform indirect call to a locally defined function,
foo, via its GOT slot, to either "NOP call foo" or "call foo NOP" where
NOP is a 1-byte NOP padding.  This patch adds a "-z call-nop=PADDING"
option to x86 ld to control 1-byte NOP padding for x86 call instruction.
PADDING is one of prefix-addr, prefix-nop, suffix-nop, prefix-NUMBER or
suffix-NUMBER.

bfd/

	* elf32-i386.c (elf_i386_convert_load): Use call_nop_byte and
	check call_nop_as_suffix for 1-byte NOP padding to pad call.
	* elf64-x86-64.c (elf_x86_64_convert_load): Likewise.

include/

	* bfdlink.h (bfd_link_info): Add call_nop_as_suffix and
	call_nop_byte.

ld/

	* ld/ld.texinfo: Document "-z call-nop=PADDING" option.
	* emulparams/call_nop.sh: New file.
	* emulparams/elf_i386_be.sh: Source
	${srcdir}/emulparams/call_nop.sh.
	* emulparams/elf_i386_chaos.sh: Likewise.
	* emulparams/elf_i386_ldso.sh: Likewise.
	* emulparams/elf_i386_vxworks.sh: Likewise.
	* emulparams/elf_iamcu.sh: Likewise.
	* emulparams/elf_k1om.sh: Likewise.
	* emulparams/elf_l1om.sh: Likewise.
	* emulparams/elf_x86_64.sh: Likewise.
	* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Set
	link_info.call_nop_byte if $CALL_NOP_BYTE isn't empty.

ld/testsuite/

	* ld-i386/call3.s: New file.
	* ld-i386/call3a.d: Likewise.
	* ld-i386/call3b.d: Likewise.
	* ld-i386/call3c.d: Likewise.
	* ld-i386/call3d.d: Likewise.
	* ld-i386/call3e.d: Likewise.
	* ld-i386/call3f.d: Likewise.
	* ld-i386/call3g.d: Likewise.
	* ld-i386/call3h.d: Likewise.
	* ld-i386/load1-nacl.d: Likewise.
	* ld-x86-64/call1.s: Likewise.
	* ld-x86-64/call1a.d: Likewise.
	* ld-x86-64/call1b.d: Likewise.
	* ld-x86-64/call1c.d: Likewise.
	* ld-x86-64/call1d.d: Likewise.
	* ld-x86-64/call1e.d: Likewise.
	* ld-x86-64/call1f.d: Likewise.
	* ld-x86-64/call1g.d: Likewise.
	* ld-x86-64/call1h.d: Likewise.
	* ld-x86-64/call1i.d: Likewise.
	* ld-x86-64/load1a-nacl.d: Likewise.
	* ld-x86-64/load1b-nacl.d: Likewise.
	* ld-x86-64/load1c-nacl.d: Likewise.
	* ld-x86-64/load1d-nacl.d: Likewise.
2015-10-22 04:56:39 -07:00
..
aarch64elf32.sh
aarch64elf32b.sh
aarch64elf.sh
aarch64elfb.sh
aarch64fbsd.sh Add support for configuring an aarch64-freebsd target. 2015-04-02 15:07:27 +01:00
aarch64fbsdb.sh Add support for configuring an aarch64-freebsd target. 2015-04-02 15:07:27 +01:00
aarch64linux32.sh
aarch64linux32b.sh
aarch64linux.sh
aarch64linuxb.sh
aix5ppc.sh
aix5rs6.sh
aixppc.sh
aixrs6.sh
alpha.sh
alphavms.sh
arcebelf_prof.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arcebelf.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arceblinux_prof.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arceblinux.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arcelf_prof.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arcelf.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arclinux_prof.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arclinux.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arcv2elf.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arcv2elfx.sh New ARC implementation. 2015-10-07 14:20:19 +01:00
arm_epoc_pe.sh
arm_wince_pe.sh
armaoutb.sh
armaoutl.sh
armcoff.sh
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_eabi.sh
armelf_linux.sh ld/ARM: Increase maximum page size to 64kB 2014-07-08 15:00:12 +01:00
armelf_nacl.sh
armelf_nbsd.sh
armelf_vxworks.sh
armelf.sh
armelfb_fbsd.sh
armelfb_linux_eabi.sh
armelfb_linux.sh
armelfb_nacl.sh
armelfb_nbsd.sh
armelfb.sh
armnbsd.sh
armnto.sh
armpe.sh
armsymbian.sh
avr1.sh
avr2.sh
avr3.sh
avr4.sh
avr5.sh
avr6.sh
avr25.sh
avr31.sh
avr35.sh
avr51.sh
avrtiny.sh
avrxmega1.sh
avrxmega2.sh
avrxmega3.sh
avrxmega4.sh
avrxmega5.sh
avrxmega6.sh
avrxmega7.sh
call_nop.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
coff_i860.sh
coff_sparc.sh
crisaout.sh
criself.sh ALIGN change affects cris scripts 2015-07-20 14:29:37 +09:30
crislinux.sh
d10velf.sh
d30v_e.sh
d30v_o.sh
d30velf.sh
delta68.sh
elf32_dlx.sh
elf32_i860.sh
elf32_i960.sh
elf32_sparc_sol2.sh
elf32_sparc_vxworks.sh
elf32_sparc.sh
elf32_spu.sh
elf32_tic6x_be.sh
elf32_tic6x_elf_be.sh
elf32_tic6x_elf_le.sh
elf32_tic6x_le.sh Prevent multiple definitions for _HEAP_START, _HEAP_MAX, and _STACK_START when performing a relocatable link with a tic6x target. 2015-04-01 11:29:46 +01:00
elf32_tic6x_linux_be.sh
elf32_tic6x_linux_le.sh
elf32_x86_64_nacl.sh
elf32_x86_64.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf32am33lin.sh
elf32b4300.sh
elf32bfin.sh
elf32bfinfd.sh
elf32bmip.sh [MIPS] Implement O32 FPXX, FP64 and FP64A ABI extensions 2014-07-29 11:27:59 +01:00
elf32bmipn32-defs.sh Skip empty EMULATION_NAME 2015-04-08 09:46:50 -07:00
elf32bmipn32.sh
elf32bsmip.sh
elf32btsmip_fbsd.sh
elf32btsmip.sh
elf32btsmipn32_fbsd.sh
elf32btsmipn32.sh
elf32cr16.sh
elf32cr16c.sh
elf32crx.sh
elf32ebmip.sh
elf32ebmipvxworks.sh
elf32elmip.sh
elf32elmipvxworks.sh
elf32epiphany_4x4.sh
elf32epiphany.sh
elf32fr30.sh
elf32frv.sh
elf32frvfd.sh
elf32ft32.sh FT32 initial support 2015-01-28 16:25:18 +10:30
elf32i370.sh
elf32ip2k.sh
elf32iq10.sh
elf32iq2000.sh
elf32l4300.sh
elf32lm32.sh
elf32lm32fd.sh
elf32lmip.sh
elf32lppc.sh
elf32lppclinux.sh
elf32lppcnto.sh
elf32lppcsim.sh
elf32lr5900.sh
elf32lr5900n32.sh
elf32lsmip.sh
elf32ltsmip_fbsd.sh
elf32ltsmip.sh
elf32ltsmipn32_fbsd.sh
elf32ltsmipn32.sh
elf32m32c.sh
elf32mb_linux.sh
elf32mbel_linux.sh
elf32mcore.sh
elf32mep.sh
elf32metag.sh
elf32microblaze.sh
elf32microblazeel.sh
elf32mipswindiss.sh
elf32moxie.sh
elf32mt.sh
elf32or1k_linux.sh or1k: increase linux TEXT_START_ADDR to 0x2000 2014-07-17 00:26:45 +03:00
elf32or1k.sh
elf32ppc_fbsd.sh
elf32ppc.sh
elf32ppccommon.sh
elf32ppclinux.sh
elf32ppcnto.sh
elf32ppcsim.sh
elf32ppcvxworks.sh
elf32ppcwindiss.sh
elf32rl78.sh Fix the evaluation of RL78 complex relocs, by making immediate values be computed relative to a new absolute symbol. 2015-07-24 16:44:27 +01:00
elf32rx.sh
elf32tilegx_be.sh
elf32tilegx.sh
elf32tilepro.sh
elf32vax.sh
elf32visium.sh Add Visium support to ld 2014-12-06 16:45:22 +01:00
elf32xc16x.sh
elf32xc16xl.sh
elf32xc16xs.sh
elf32xstormy16.sh
elf32xtensa.sh
elf64_aix.sh
elf64_ia64_fbsd.sh
elf64_ia64_vms.sh
elf64_ia64.sh
elf64_s390.sh
elf64_sparc_fbsd.sh
elf64_sparc_sol2.sh
elf64_sparc.sh
elf64alpha_fbsd.sh
elf64alpha_nbsd.sh
elf64alpha.sh
elf64bmip-defs.sh [MIPS] Implement O32 FPXX, FP64 and FP64A ABI extensions 2014-07-29 11:27:59 +01:00
elf64bmip.sh
elf64btsmip_fbsd.sh
elf64btsmip.sh
elf64hppa.sh
elf64lppc.sh
elf64ltsmip_fbsd.sh
elf64ltsmip.sh
elf64mmix.sh
elf64ppc_fbsd.sh
elf64ppc.sh Align .TOC. for PowerPC64 2015-04-23 09:49:19 +09:30
elf64rdos.sh
elf64tilegx_be.sh
elf64tilegx.sh
elf_fbsd.sh
elf_i386_be.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_i386_chaos.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_i386_fbsd.sh
elf_i386_ldso.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_i386_nacl.sh
elf_i386_sol2.sh
elf_i386_vxworks.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_i386.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_iamcu.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_k1om_fbsd.sh
elf_k1om.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_l1om_fbsd.sh
elf_l1om.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
elf_nacl.sh
elf_s390.sh
elf_x86_64_cloudabi.sh Add support for Nuxi CloudABI on x86-64 2015-03-31 08:11:08 -07:00
elf_x86_64_fbsd.sh
elf_x86_64_nacl.sh
elf_x86_64_sol2.sh
elf_x86_64.sh Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
extern_protected_data.sh Add -z noextern-protected-data to ld for ELF/x86 2015-04-14 04:13:11 -07:00
gld960.sh
gld960coff.sh
h8300.sh
h8300elf_linux.sh Add support for the h8300-linux target. 2015-02-23 17:04:53 +00:00
h8300elf.sh
h8300h.sh
h8300helf_linux.sh Add support for the h8300-linux target. 2015-02-23 17:04:53 +00:00
h8300helf.sh
h8300hn.sh
h8300hnelf.sh
h8300s.sh
h8300self_linux.sh Add support for the h8300-linux target. 2015-02-23 17:04:53 +00:00
h8300self.sh
h8300sn.sh
h8300snelf.sh
h8300sx.sh
h8300sxelf_linux.sh Add support for the h8300-linux target. 2015-02-23 17:04:53 +00:00
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
hppanbsd.sh
hppaobsd.sh
i386aout.sh
i386beos.sh
i386bsd.sh
i386coff.sh
i386go32.sh
i386linux.sh
i386lynx.sh
i386mach.sh
i386moss.sh
i386msdos.sh
i386nbsd.sh
i386nto.sh
i386nw.sh
i386pe_posix.sh
i386pe.sh
i386pep.sh
lnk960.sh
m32relf_linux.sh
m32relf.sh
m32rlelf_linux.sh
m32rlelf.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
msp430elf.sh Add support to the MSP430 linker for the automatic placement of code and data into either low or high memory regions. 2015-05-05 13:38:00 +01:00
msp430X.sh Change msp430 emulation to msp430elf 2015-04-24 17:05:52 -04:00
nds32belf16m.sh
nds32belf_linux.sh
nds32belf.sh
nds32elf16m.sh
nds32elf_linux.sh
nds32elf.sh
news.sh
nios2elf.sh
nios2linux.sh
ns32knbsd.sh
pc532macha.sh
pdp11.sh
pjelf.sh
pjlelf.sh
plt_unwind.sh Add ld_list_options 2015-04-08 04:55:23 -07:00
ppclynx.sh
ppcmacos.sh
ppcnw.sh
ppcpe.sh
README ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
riscix.sh
score3_elf.sh
score7_elf.sh
sh.sh
shelf32_linux.sh
shelf32_nbsd.sh
shelf32.sh
shelf64_nbsd.sh
shelf64.sh
shelf_fd.sh
shelf_linux.sh
shelf_nbsd.sh
shelf_nto.sh
shelf_uclinux.sh
shelf_vxworks.sh
shelf.sh
shl.sh
shlelf32_linux.sh
shlelf32_nbsd.sh
shlelf32.sh
shlelf64_nbsd.sh
shlelf64.sh
shlelf_fd.sh
shlelf_linux.sh
shlelf_nbsd.sh
shlelf_nto.sh
shlelf_vxworks.sh
shlelf.sh
shlsymbian.sh
shpe.sh
solaris2.sh Solaris PIE support 2015-09-22 11:12:51 +02:00
sparcaout.sh
sparclinux.sh
sparcnbsd.sh
st2000.sh
sun3.sh
sun4.sh
tic3xcoff_onchip.sh
tic3xcoff.sh
tic4xcoff.sh
tic30aout.sh
tic30coff.sh
tic54xcoff.sh
tic80coff.sh
v850_rh850.sh Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
v850.sh Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
vanilla.sh
vax.sh
vaxnbsd.sh
vsta.sh
vxworks.sh
w65.sh
xgateelf.sh
z80.sh
z8001.sh
z8002.sh

README

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