H.J. Lu e2cbcd9156 Support x86-64 TLS code sequences without PLT
We can generate x86-64 TLS code sequences for general and local dynamic
models without PLT, which uses indirect call via GOT:

call *__tls_get_addr@GOTPCREL(%rip)

instead of direct call:

call __tls_get_addr[@PLT]

Since direct call is 4-byte long and indirect call, is 5-byte long, the
extra one byte must be handled properly.

For general dynamic model, one 0x66 prefix before call instruction is
removed to make room for indirect call.  For local dynamic model, we
simply use 5-byte indirect call.

TLS linker optimization is updated to recognize new instruction patterns.
For local dynamic model to local exec model transition, we generate
4 0x66 prefixes, instead of 3, before mov instruction in 64-bit and
generate a 5-byte nop, instead of 4-byte, before mov instruction in
32-bit.  Since linker may convert

call *__tls_get_addr@GOTPCREL(%rip)

to

addr32 call __tls_get_addr

when producing static executable, both patterns are recognized.

bfd/

	* elf64-x86-64.c (elf_x86_64_link_hash_entry): Add tls_get_addr.
	(elf_x86_64_link_hash_newfunc): Initialize tls_get_addr to 2.
	(elf_x86_64_check_tls_transition): Check indirect call and
	direct call with the addr32 prefix for general and local dynamic
	models.  Set the tls_get_addr feild.
	(elf_x86_64_convert_load_reloc): Always use addr32 prefix for
	indirect __tls_get_addr call via GOT.
	(elf_x86_64_relocate_section): Handle GD->LE, GD->IE and LD->LE
	transitions with indirect call and direct call with the addr32
	prefix.

ld/

	* testsuite/ld-x86-64/pass.out: New file.
	* testsuite/ld-x86-64/tls-def1.c: Likewise.
	* testsuite/ld-x86-64/tls-gd1.S: Likewise.
	* testsuite/ld-x86-64/tls-ld1.S: Likewise.
	* testsuite/ld-x86-64/tls-main1.c: Likewise.
	* testsuite/ld-x86-64/tls.exp: Likewise.
	* testsuite/ld-x86-64/tlsbin2-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlsbin2.dd: Likewise.
	* testsuite/ld-x86-64/tlsbin2.rd: Likewise.
	* testsuite/ld-x86-64/tlsbin2.sd: Likewise.
	* testsuite/ld-x86-64/tlsbin2.td: Likewise.
	* testsuite/ld-x86-64/tlsbinpic2.s: Likewise.
	* testsuite/ld-x86-64/tlsgd10.dd: Likewise.
	* testsuite/ld-x86-64/tlsgd10.s: Likewise.
	* testsuite/ld-x86-64/tlsgd11.dd: Likewise.
	* testsuite/ld-x86-64/tlsgd11.s: Likewise.
	* testsuite/ld-x86-64/tlsgd12.d: Likewise.
	* testsuite/ld-x86-64/tlsgd12.s: Likewise.
	* testsuite/ld-x86-64/tlsgd13.d: Likewise.
	* testsuite/ld-x86-64/tlsgd13.s: Likewise.
	* testsuite/ld-x86-64/tlsgd14.dd: Likewise.
	* testsuite/ld-x86-64/tlsgd14.s: Likewise.
	* testsuite/ld-x86-64/tlsgd5c.s: Likewise.
	* testsuite/ld-x86-64/tlsgd6c.s: Likewise.
	* testsuite/ld-x86-64/tlsgd9.dd: Likewise.
	* testsuite/ld-x86-64/tlsgd9.s: Likewise.
	* testsuite/ld-x86-64/tlsld4.dd: Likewise.
	* testsuite/ld-x86-64/tlsld4.s: Likewise.
	* testsuite/ld-x86-64/tlsld5.dd: Likewise.
	* testsuite/ld-x86-64/tlsld5.s: Likewise.
	* testsuite/ld-x86-64/tlsld6.dd: Likewise.
	* testsuite/ld-x86-64/tlsld6.s: Likewise.
	* testsuite/ld-x86-64/tlspic2-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlspic2.dd: Likewise.
	* testsuite/ld-x86-64/tlspic2.rd: Likewise.
	* testsuite/ld-x86-64/tlspic2.sd: Likewise.
	* testsuite/ld-x86-64/tlspic2.td: Likewise.
	* testsuite/ld-x86-64/tlspic3.s: Likewise.
	* testsuite/ld-x86-64/tlspie2.s: Likewise.
	* testsuite/ld-x86-64/tlspie2a.d: Likewise.
	* testsuite/ld-x86-64/tlspie2b.d: Likewise.
	* testsuite/ld-x86-64/tlspie2c.d: Likewise.
	* testsuite/ld-x86-64/tlsgd5.dd: Updated.
	* testsuite/ld-x86-64/tlsgd6.dd: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run libtlspic2.so, tlsbin2,
	tlsgd5b, tlsgd6b, tlsld4, tlsld5, tlsld6, tlsgd9, tlsgd10,
	tlsgd11, tlsgd14, tlsgd12, tlsgd13, tlspie2a, tlspie2b and
	tlspie2c.
2016-06-06 11:07:16 -07:00
2016-02-10 10:54:29 +00:00
2016-03-03 12:55:30 +10:30
2016-06-03 11:29:25 +00:00
2016-05-09 17:24:30 +09:30
2015-08-31 12:53:36 +09:30
2016-05-09 17:24:30 +09:30
2016-05-28 22:36:04 +09:30
2014-11-16 13:43:48 +01:00
2015-07-27 07:49:05 -07:00
2014-11-16 13:43:48 +01:00
2014-11-16 13:43:48 +01:00
2016-01-12 08:44:52 -08:00
2014-02-06 11:01:57 +01:00
2016-05-28 22:36:04 +09:30
2014-11-16 13:43:48 +01:00
2014-11-16 13:43:48 +01:00
2014-11-16 13:43:48 +01:00

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.
Description
GDB that can debug Mach-Os on Linux
Readme 280 MiB
Languages
C 58.3%
Makefile 18.5%
Assembly 13.3%
C++ 3.6%
Scheme 1.2%
Other 4.7%