delta/glibc.git/sysdeps/i386/dl-trampoline.S, branch azanella/aarch64-split-stack sourceware.org: git/glibc.git Update copyright dates with scripts/update-copyrights. 2018-01-01T00:32:25+00:00 Joseph Myers joseph@codesourcery.com 2018-01-01T00:32:25+00:00 688903eb3ef01301d239ab753d309d45720610a7 * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise. 
	* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
Update copyright dates with scripts/update-copyrights. 2017-01-01T00:14:16+00:00 Joseph Myers joseph@codesourcery.com 2017-01-01T00:14:16+00:00 bfff8b1becd7d01c074177df7196ab327cd8c844 






Update copyright dates with scripts/update-copyrights.
2016-01-04T16:05:18+00:00

Joseph Myers
joseph@codesourcery.com

2016-01-04T16:05:18+00:00

f7a9f785e547bd599dee496fd906a28bcb4ec7fe












Preserve bound registers for pointer pass/return
2015-07-09T13:50:12+00:00

Igor Zamyatin
igor.zamyatin@intel.com

2015-07-09T13:50:12+00:00

14c5cbabc2d11004ab223ae5eae761ddf83ef99e

We need to save/restore bound registers and add a BND prefix before
branches in _dl_runtime_profile so that bound registers for pointer
pass and return are preserved when LD_AUDIT is used.

	[BZ #18134]
	* sysdeps/i386/configure.ac: Set HAVE_MPX_SUPPORT.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/i386/dl-trampoline.S (PRESERVE_BND_REGS_PREFIX): New.
	(_dl_runtime_profile): Save and restore Intel MPX return bound
	registers when calling _dl_call_pltexit.  Add
	PRESERVE_BND_REGS_PREFIX before return.
	* sysdeps/i386/link-defines.sym (LRV_BND0_OFFSET): New.
	(LRV_BND1_OFFSET): Likewise.
	* sysdeps/x86/bits/link.h (La_i86_retval): Add lrv_bnd0 and
	lrv_bnd1.
	* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Fix
	typo in bndmov encoding.
	* sysdeps/x86_64/dl-trampoline.h: Properly save and restore
	Intel MPX bound registers.  Add PRESERVE_BND_REGS_PREFIX before
	branch instructions to preserve bounds.





We need to save/restore bound registers and add a BND prefix before
branches in _dl_runtime_profile so that bound registers for pointer
pass and return are preserved when LD_AUDIT is used.

	[BZ #18134]
	* sysdeps/i386/configure.ac: Set HAVE_MPX_SUPPORT.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/i386/dl-trampoline.S (PRESERVE_BND_REGS_PREFIX): New.
	(_dl_runtime_profile): Save and restore Intel MPX return bound
	registers when calling _dl_call_pltexit.  Add
	PRESERVE_BND_REGS_PREFIX before return.
	* sysdeps/i386/link-defines.sym (LRV_BND0_OFFSET): New.
	(LRV_BND1_OFFSET): Likewise.
	* sysdeps/x86/bits/link.h (La_i86_retval): Add lrv_bnd0 and
	lrv_bnd1.
	* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Fix
	typo in bndmov encoding.
	* sysdeps/x86_64/dl-trampoline.h: Properly save and restore
	Intel MPX bound registers.  Add PRESERVE_BND_REGS_PREFIX before
	branch instructions to preserve bounds.







Add and use sysdeps/i386/link-defines.sym
2015-07-07T12:23:40+00:00

H.J. Lu
hjl.tools@gmail.com

2015-07-07T12:23:24+00:00

ddd85a65b6e3d6ec1e756c1f78559f99a2c943ca

Define macros for fields in La_i86_regs and La_i86_retval and use them
in dl-trampoline.S, instead of hardcoded values.

	* sysdeps/i386/Makefile (gen-as-const-headers)[elf]: Add
	link-defines.sym.
	* sysdeps/i386/dl-trampoline.S: Include <link-defines.h>.
	(_dl_runtime_profile): Use LONG_DOUBLE_SIZE, LRV_SIZE,
	LRV_EAX_OFFSET, LRV_EDX_OFFSET, LRV_ST0_OFFSET, LRV_ST1_OFFSET
	and LR_SIZE.
	* sysdeps/i386/link-defines.sym: New file.





Define macros for fields in La_i86_regs and La_i86_retval and use them
in dl-trampoline.S, instead of hardcoded values.

	* sysdeps/i386/Makefile (gen-as-const-headers)[elf]: Add
	link-defines.sym.
	* sysdeps/i386/dl-trampoline.S: Include <link-defines.h>.
	(_dl_runtime_profile): Use LONG_DOUBLE_SIZE, LRV_SIZE,
	LRV_EAX_OFFSET, LRV_EDX_OFFSET, LRV_ST0_OFFSET, LRV_ST1_OFFSET
	and LR_SIZE.
	* sysdeps/i386/link-defines.sym: New file.







Update copyright dates with scripts/update-copyrights.
2015-01-02T16:29:47+00:00

Joseph Myers
joseph@codesourcery.com

2015-01-02T16:28:19+00:00

b168057aaacf1d149246d0eb3e84332492d35063












Update copyright notices with scripts/update-copyrights
2014-01-01T12:00:23+00:00

Allan McRae
allan@archlinux.org

2014-01-01T11:03:15+00:00

d4697bc93dc27a7bbf275ce7dd351bb1bfcf28de












Update copyright notices with scripts/update-copyrights.
2013-01-02T19:05:09+00:00

Joseph Myers
joseph@codesourcery.com

2013-01-02T19:01:50+00:00

568035b7874a099087b77f7bba3e36a1173787b0












Replace FSF snail mail address with URLs.
2012-02-09T23:18:22+00:00

Paul Eggert
eggert@cs.ucla.edu

2012-02-09T23:18:22+00:00

59ba27a63ada3f46b71ec99a314dfac5a38ad6d2












rtld, i386: Fix cfi directive in audit trampoline code
2011-08-29T13:14:51+00:00

Jiri Olsa
jolsa@redhat.com

2011-08-29T13:14:51+00:00

fbeb5f4db12dccb985ee10eb87fe00b46562b796

_dl_runtime_profile function has wrong cfi directive when
rewinding stack back for the pltexit path.

Only 8 bytes - 2 'pop edx' instructions from the pltentry-only
code should be rewinded back.

With attached patch, I'm able to rewind stack correctly
throught the rtld code from audit library callback.





_dl_runtime_profile function has wrong cfi directive when
rewinding stack back for the pltexit path.

Only 8 bytes - 2 'pop edx' instructions from the pltentry-only
code should be rewinded back.

With attached patch, I'm able to rewind stack correctly
throught the rtld code from audit library callback.