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56ceb5b540
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H.J. Lu 56ceb5b540 Add R_X86_64_[REX_]GOTPCRELX support to gas and ld 
This patch adds support for the R_X86_64_GOTPCRELX and
R_X86_64_REX_GOTPCRELX relocations proposed in

https://groups.google.com/forum/#!topic/x86-64-abi/n9AWHogmVY0

to gas and ld.  It updates gas to generate R_X86_64_GOTPCRELX,
R_X86_64_REX_GOTPCRELX if there is a REX prefix, relocation for memory
operand, foo@GOTPCREL(%rip).  With the locally defined symbol, foo, we
convert

  mov foo@GOTPCREL(%rip), %reg

to

   lea foo(%rip), %reg

and convert

   call/jmp *foo@GOTPCREL(%rip)
to

   nop call foo/jmp foo nop

When PIC is false, convert

   test %reg, foo@GOTPCREL(%rip)
to

test $foo, %reg

and convert

   binop foo@GOTPCREL(%rip), %reg

to

   binop $foo, %reg

where binop is one of adc, add, and, cmp, or, sbb, sub, xor instructions.

bfd/

	* elf64-x86-64.c: Include opcode/i386.h.
	(x86_64_elf_howto_table): Add R_X86_64_GOTPCRELX and
	R_X86_64_REX_GOTPCRELX.
	(R_X86_64_standard): Replace R_X86_64_PLT32_BND with
	R_X86_64_REX_GOTPCRELX.
	(x86_64_reloc_map): Add BFD_RELOC_X86_64_GOTPCRELX and
	BFD_RELOC_X86_64_REX_GOTPCRELX.
	(need_convert_mov_to_lea): Renamed to ...
	(need_convert_load): This.
	(elf_x86_64_check_relocs): Handle R_X86_64_GOTPCRELX and
	R_X86_64_REX_GOTPCRELX.  Replace need_convert_mov_to_lea with
	need_convert_load.
	(elf_x86_64_gc_sweep_hook): Handle R_X86_64_GOTPCRELX and
	R_X86_64_REX_GOTPCRELX.
	(elf_x86_64_size_dynamic_sections): Likewise.
	(elf_x86_64_relocate_section): Likewise.
	(elf_x86_64_convert_mov_to_lea): Renamed to ...
	(elf_x86_64_convert_load): This.  Replace need_convert_mov_to_lea
	with need_convert_load.  Support R_X86_64_GOTPCRELX and
	R_X86_64_REX_GOTPCRELX transformations.
	* reloc.c (BFD_RELOC_X86_64_GOTPCRELX): New.
	(BFD_RELOC_X86_64_REX_GOTPCRELX): Likewise.
	* bfd-in2.h: Regenerated.
	* libbfd.h: Likewise.

gas/

	* config/tc-i386.c (tc_i386_fix_adjustable): Handle
	BFD_RELOC_X86_64_GOTPCRELX and BFD_RELOC_X86_64_REX_GOTPCRELX.
	(tc_gen_reloc): Likewise.
	(i386_validate_fix): Generate BFD_RELOC_X86_64_GOTPCRELX or
	BFD_RELOC_X86_64_REX_GOTPCRELX if fx_tcbit2 is set.
	* config/tc-i386.h (TC_FORCE_RELOCATION_LOCAL): Also return
	true for BFD_RELOC_X86_64_GOTPCRELX and
	BFD_RELOC_X86_64_REX_GOTPCRELX.

gas/testsuite/

	* gas/i386/i386.exp: Run x86-64-gotpcrel.
	* gas/i386/x86-64-gotpcrel.d: New file.
	* gas/i386/x86-64-gotpcrel.s: Likewise.
	* gas/i386/ilp32/x86-64-gotpcrel.d: Likewise.
	* gas/i386/x86-64-localpic.d: Replace R_X86_64_GOTPCREL with
	R_X86_64_REX_GOTPCRELX.
	* gas/i386/ilp32/x86-64-localpic.d: Likewise.

include/elf/

	* x86-64.h (R_X86_64_GOTPCRELX): New.
	(R_X86_64_REX_GOTPCRELX): Likewise.

ld/testsuite/

	* ld-ifunc/ifunc-5r-local-x86-64.d: Replace R_X86_64_GOTPCREL
	with R_X86_64_REX_GOTPCRELX.
	* ld-x86-64/plt-main1.rd: Likewise.
	* ld-x86-64/plt-main3.rd: Likewise.
	* ld-x86-64/plt-main4.rd: Likewise.
	* ld-x86-64/gotpcrel1.dd: New file.
	* ld-x86-64/gotpcrel1.out: Likewise.
	* ld-x86-64/gotpcrel1a.S: Likewise.
	* ld-x86-64/gotpcrel1b.c: Likewise.
	* ld-x86-64/gotpcrel1c.c: Likewise.
	* ld-x86-64/gotpcrel1d.S: Likewise.
	* ld-x86-64/load1.s: Likewise.
	* ld-x86-64/load1a.d: Likewise.
	* ld-x86-64/load1b.d: Likewise.
	* ld-x86-64/load1c.d: Likewise.
	* ld-x86-64/load1d.d: Likewise.
	* ld-x86-64/x86-64.exp: Run load1a, load1b, load1c and load1d
	tests.  Run gotpcrel1 test.
2015-10-22 04:49:38 -07:00
..
aout ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
cgen ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
coff Fixes a buffer overflow when compiling assembler for the MinGW targets. 2015-01-06 16:46:40 +00:00
elf Add R_X86_64_[REX_]GOTPCRELX support to gas and ld 2015-10-22 04:49:38 -07:00
gdb Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
mach-o ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
nlm ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
opcode Avoid using 'template' C++ keyword 2015-10-07 15:22:47 +01:00
som ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
vms ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
alloca-conf.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ansidecl.h Sync ansidecl.h with GCC 2015-08-12 05:02:21 -07:00
bfdlink.h Add --no-dynamic-linker option to ld, for static PIE use 2015-09-20 15:52:27 +09:30
binary-io.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
bout.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ChangeLog New ARC implementation. 2015-10-07 14:20:19 +01:00
ChangeLog-9103 Add copyright notices 2012-12-10 12:48:03 +00:00
COPYING Update the address and phone number of the FSF organization 2005-05-10 10:21:13 +00:00
COPYING3 * COPYING3: New file. Contains version 3 of the GNU General Public License. 2007-07-17 13:50:23 +00:00
demangle.h Remove trailing spaces in demangle.h 2015-07-14 09:18:16 -07:00
dis-asm.h New ARC implementation. 2015-10-07 14:20:19 +01:00
dwarf2.def Resync files in the binutils repository that are maintained in the gcc repository. 2015-09-30 17:55:16 +01:00
dwarf2.h Recognize new DWARF5/GCC5 DW_LANG constants for Fortran 03 and Fortran 08. 2015-02-10 09:07:25 +01:00
dyn-string.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fibheap.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
filenames.h Sync filenames.h with gcc 2015-05-01 09:11:15 -07:00
floatformat.h floatformat.h: Wrap in extern "C" 2015-02-19 22:44:44 +00:00
fnmatch.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fopen-bin.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fopen-same.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
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gcc-interface.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
getopt.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
hashtab.h Sync hashtab.h, splay-tree.h with GCC 2015-07-14 09:18:16 -07:00
hp-symtab.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ieee.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
leb128.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
libiberty.h Sync libiberty from GCC, replaying updates to configure scripts 2015-06-24 21:43:02 +02:00
longlong.h Sync longlong.h with GCC 2015-07-14 09:18:16 -07:00
lto-symtab.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
MAINTAINERS ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
md5.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
oasys.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
objalloc.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
obstack.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
os9k.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
partition.h Merge include/partition.h from GCC. 2015-04-17 16:13:43 +01:00
plugin-api.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
progress.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
safe-ctype.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
sha1.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
simple-object.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
sort.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
splay-tree.h Sync hashtab.h, splay-tree.h with GCC 2015-07-14 09:18:16 -07:00
symcat.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
timeval-utils.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
vtv-change-permission.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xregex2.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xregex.h merge from gcc 2011-07-25 17:11:48 +00:00
xtensa-config.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xtensa-isa-internal.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xtensa-isa.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30