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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sourceware.org Subject: [Bug dynamic-link/15128] dynamic loader may clobber floating-point parameters on AArch64 Date: Mon, 24 Aug 2015 13:19:00 -0000 [thread overview] Message-ID: <bug-15128-131-JgowrLlgFz@http.sourceware.org/bugzilla/> (raw) In-Reply-To: <bug-15128-131@http.sourceware.org/bugzilla/> https://sourceware.org/bugzilla/show_bug.cgi?id=15128 --- Comment #36 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> --- This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, hjl/plt/master has been created at 5875f918319701615f59eb6d1162751fed5f7067 (commit) - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5875f918319701615f59eb6d1162751fed5f7067 commit 5875f918319701615f59eb6d1162751fed5f7067 Author: H.J. Lu <hjl.tools@gmail.com> Date: Sun Aug 2 22:27:47 2015 -0700 Don't run tst-getpid2 with LD_BIND_NOW=1 Since _dl_x86_64_save_sse and _dl_x86_64_restore_sse are removed now, we don't need to run tst-getpid2 with LD_BIND_NOW=1. * sysdeps/unix/sysv/linux/Makefile (tst-getpid2-ENV): Removed. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c3a09b3f8b092450c047d5eb2bd087860e60aab7 commit c3a09b3f8b092450c047d5eb2bd087860e60aab7 Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Jul 29 04:49:38 2015 -0700 Use SSE optimized strcmp in x86-64 ld.so Since ld.so preserves vector registers now, we can SSE optimized strcmp in x86-64 ld.so. * sysdeps/x86_64/strcmp.S: Remove "#if !IS_IN (libc)". https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6ca39160819603e0ce06ec59afe7c39fef3889c7 commit 6ca39160819603e0ce06ec59afe7c39fef3889c7 Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Jul 29 03:56:14 2015 -0700 Remove x86-64 rtld-xxx.c and rtld-xxx.S Since ld.so preserves vector registers now, we can use the regular, non-ifunc string and memory functions in ld.so. * sysdeps/x86_64/rtld-memcmp.c: Removed. * sysdeps/x86_64/rtld-memset.S: Likewise. * sysdeps/x86_64/rtld-strchr.S: Likewise. * sysdeps/x86_64/rtld-strlen.S: Likewise. * sysdeps/x86_64/multiarch/rtld-memcmp.c: Likewise. * sysdeps/x86_64/multiarch/rtld-memset.S: Likewise. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=af5de6b2a5115629627618d9863814342740da8a commit af5de6b2a5115629627618d9863814342740da8a Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Jul 29 03:47:54 2015 -0700 Replace %xmm8 with %xmm0 Since ld.so preserves vector registers now, we can use %xmm0 to avoid the REX prefix. * sysdeps/x86_64/memset.S: Replace %xmm8 with %xmm0. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=11a59bde269f34d786995a5738387fd1c4c1b2a9 commit 11a59bde269f34d786995a5738387fd1c4c1b2a9 Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Jul 29 03:44:39 2015 -0700 Replace %xmm[8-12] with %xmm[0-4] Since ld.so preserves vector registers now, we can use %xmm[0-4] to avoid the REX prefix. * sysdeps/x86_64/strlen.S: Replace %xmm[8-12] with %xmm[0-4]. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=920994edb1efee963e5d8db86f6cc8493b0335d9 commit 920994edb1efee963e5d8db86f6cc8493b0335d9 Author: H.J. Lu <hjl.tools@gmail.com> Date: Tue Jul 28 18:56:18 2015 -0700 Don't disable SSE in x86-64 ld.so Since ld.so preserves vector registers now, we can use SSE in ld.so. * sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-sse -mno-mmx for $(all-rtld-routines). [$(subdir) == elf] (tests-special): Add $(objpfx)tst-ld-sse-use.out. [$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): New rule. * sysdeps/x86/Makefile [$(subdir) == elf] (CFLAGS-.os): Removed. [$(subdir) == elf] (tests-special): Likewise. [$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): Likewise. * sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-mmx for $(all-rtld-routines). https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d27ac711991ca4a2583a6570b15fa2a83de73c3 commit 0d27ac711991ca4a2583a6570b15fa2a83de73c3 Author: H.J. Lu <hjl.tools@gmail.com> Date: Sat Jul 11 13:25:25 2015 -0700 Save and restore vector registers in x86-64 ld.so This patch adds SSE, AVX and AVX512 versions of _dl_runtime_resolve and _dl_runtime_profile, which save and restore the first 8 vector registers used for parameter passing. elf_machine_runtime_setup selects the proper _dl_runtime_resolve or _dl_runtime_profile based on _dl_x86_cpu_features. It avoids race condition caused by FOREIGN_CALL macros, which are only used for x86-64. Performance impact of saving and restoring 8 vector registers are negligible on Nehalem, Sandy Bridge, Ivy Bridge and Haswell when ld.so is optimized with SSE2. [BZ #15128] * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include <dl-procinfo.h> and <cpuid.h>. (elf_machine_runtime_setup): Use _dl_runtime_resolve_sse, _dl_runtime_resolve_avx, or _dl_runtime_resolve_avx512, _dl_runtime_profile_sse, _dl_runtime_profile_avx, or _dl_runtime_profile_avx512, based on HAS_ARCH_FEATURE. * sysdeps/x86_64/dl-trampoline.S: Rewrite. * sysdeps/x86_64/dl-trampoline.h: Likewise. * sysdeps/x86_64/ifuncmain8.c: New file. * sysdeps/x86_64/ifuncmod8.c: Likewise. * sysdeps/x86_64/nptl/tcb-offsets.sym (RTLD_SAVESPACE_SSE): Removed. * sysdeps/x86_64/nptl/tls.h (__128bits): Removed. (tcbhead_t): Change rtld_must_xmm_save to __glibc_unused1. Change rtld_savespace_sse to __glibc_unused2. (RTLD_CHECK_FOREIGN_CALL): Removed. (RTLD_ENABLE_FOREIGN_CALL): Likewise. (RTLD_PREPARE_FOREIGN_CALL): Likewise. (RTLD_FINALIZE_FOREIGN_CALL): Likewise. ----------------------------------------------------------------------- -- You are receiving this mail because: You are on the CC list for the bug.
next prev parent reply other threads:[~2015-08-24 13:19 UTC|newest] Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-02-09 17:03 [Bug dynamic-link/15128] New: " mikpe at it dot uu.se 2013-02-09 17:04 ` [Bug dynamic-link/15128] " mikpe at it dot uu.se 2013-02-11 5:00 ` bugdal at aerifal dot cx 2013-02-11 7:21 ` Ondřej Bílka 2013-02-11 7:21 ` neleai at seznam dot cz 2013-02-11 9:09 ` mikpe at it dot uu.se 2013-02-11 13:36 ` bugdal at aerifal dot cx 2013-02-11 15:13 ` mikpe at it dot uu.se 2013-02-11 21:38 ` bugdal at aerifal dot cx 2013-02-13 9:32 ` mikpe at it dot uu.se 2013-02-20 18:12 ` carlos at redhat dot com 2013-02-24 18:11 ` amonakov at gmail dot com 2013-02-24 18:13 ` amonakov at gmail dot com 2013-02-25 8:06 ` aj at suse dot de 2013-05-21 12:59 ` marcus.shawcroft at linaro dot org 2013-10-02 22:15 ` neleai at seznam dot cz 2013-12-18 12:08 ` cvs-commit at gcc dot gnu.org 2013-12-19 14:04 ` cvs-commit at gcc dot gnu.org 2013-12-19 14:10 ` marcus.shawcroft at linaro dot org 2014-06-13 18:52 ` fweimer at redhat dot com 2015-07-31 12:33 ` cvs-commit at gcc dot gnu.org 2015-08-01 15:55 ` cvs-commit at gcc dot gnu.org 2015-08-01 22:23 ` cvs-commit at gcc dot gnu.org 2015-08-01 22:25 ` cvs-commit at gcc dot gnu.org 2015-08-02 3:55 ` cvs-commit at gcc dot gnu.org 2015-08-02 12:33 ` cvs-commit at gcc dot gnu.org 2015-08-02 13:57 ` cvs-commit at gcc dot gnu.org 2015-08-02 17:41 ` cvs-commit at gcc dot gnu.org 2015-08-02 17:43 ` cvs-commit at gcc dot gnu.org 2015-08-03 4:47 ` cvs-commit at gcc dot gnu.org 2015-08-03 4:50 ` cvs-commit at gcc dot gnu.org 2015-08-03 17:21 ` cvs-commit at gcc dot gnu.org 2015-08-03 19:32 ` cvs-commit at gcc dot gnu.org 2015-08-03 21:25 ` cvs-commit at gcc dot gnu.org 2015-08-03 21:36 ` cvs-commit at gcc dot gnu.org 2015-08-05 14:34 ` cvs-commit at gcc dot gnu.org 2015-08-05 14:35 ` cvs-commit at gcc dot gnu.org 2015-08-07 22:45 ` jsweval at arxan dot com 2015-08-19 12:19 ` cvs-commit at gcc dot gnu.org 2015-08-24 13:19 ` cvs-commit at gcc dot gnu.org [this message] 2015-08-25 11:31 ` cvs-commit at gcc dot gnu.org 2015-08-25 11:53 ` cvs-commit at gcc dot gnu.org 2023-12-08 9:28 ` liqingqing3 at huawei dot com 2023-12-08 10:37 ` fweimer at redhat dot com
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