From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11251 invoked by alias); 31 Jul 2015 12:33:16 -0000 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org Received: (qmail 11047 invoked by uid 55); 31 Jul 2015 12:33:11 -0000 From: "cvs-commit at gcc dot gnu.org" To: glibc-bugs@sourceware.org Subject: [Bug dynamic-link/15128] dynamic loader may clobber floating-point parameters on AArch64 Date: Fri, 31 Jul 2015 12:33:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: dynamic-link X-Bugzilla-Version: 2.17 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: cvs-commit at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: FIXED X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-07/txt/msg00237.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=15128 --- Comment #16 from 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/pr18661 has been created at 2e4cca72c25aa2a3a0da59c651ca69320b16bfff (commit) - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2e4cca72c25aa2a3a0da59c651ca69320b16bfff commit 2e4cca72c25aa2a3a0da59c651ca69320b16bfff Author: H.J. Lu 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=3600e9c49c921bf4f788fb55321d1fb3824abf2d commit 3600e9c49c921bf4f788fb55321d1fb3824abf2d Author: H.J. Lu 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=45e6b0f0009e3499f924d003746b6994cb9dff3c commit 45e6b0f0009e3499f924d003746b6994cb9dff3c Author: H.J. Lu 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=8a9d5ef56db422846842aae87be3347382aff070 commit 8a9d5ef56db422846842aae87be3347382aff070 Author: H.J. Lu 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=442e00b6d245a40075b9a58e2783c8395abce62c commit 442e00b6d245a40075b9a58e2783c8395abce62c Author: H.J. Lu 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] ($(objpfx)tst-ld-sse-use.out): New rule. * sysdeps/x86/Makefile: Removed. * sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-mmx for $(all-rtld-routines). https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=72185dfbf09bab8333c1245f11af0f7697ca1c03 commit 72185dfbf09bab8333c1245f11af0f7697ca1c03 Author: H.J. Lu Date: Sat Jul 11 13:25:25 2015 -0700 Save and restore vector registers in x86-64 ld.so This patch initiaizes GLRO(dl_x86_xstate) in dl_platform_init to indicate if the processor supports SSE, AVX or AVX512. It uses this information to properly save and restore vector registers in ld.so. Now we can use SSE in ld.so and delete FOREIGN_CALL macros. We can also retire the rtld_must_xmm_save field and remove the rtld_savespace_sse field in tcbhead_t. It is safe since they are internal to glibc. [BZ #15128] * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: Include instead of . * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: Include instead of . * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include and . (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 GLRO(dl_x86_xstate). (dl_platform_init): Set GLRO(dl_x86_xstate) based on cpuid. * sysdeps/x86_64/dl-procinfo.c: New file. * sysdeps/x86_64/dl-procinfo.h: Likewise. * sysdeps/x86_64/ifuncmain8.c: Likewise. * sysdeps/x86_64/ifuncmod8.c: Likewise. * sysdeps/x86_64/dl-trampoline.S: Rewrite. * sysdeps/x86_64/dl-trampoline.h: 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. Remove rtld_savespace_sse and __padding. (RTLD_CHECK_FOREIGN_CALL): Removed. (RTLD_ENABLE_FOREIGN_CALL): Likewise. (RTLD_PREPARE_FOREIGN_CALL): Likewise. (RTLD_FINALIZE_FOREIGN_CALL): Likewise. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a955dc4b8be25f9288dfaad15ef14a083be2ca78 commit a955dc4b8be25f9288dfaad15ef14a083be2ca78 Author: H.J. Lu Date: Sun Jul 12 14:41:20 2015 -0700 Align stack when calling __errno_location We should align stack to 16 bytes when calling __errno_location. [BZ #18661] * sysdeps/x86_64/fpu/s_cosf.S (__cosf): Align stack to 16 bytes when calling __errno_location. * sysdeps/x86_64/fpu/s_sincosf.S (__sincosf): Likewise. * sysdeps/x86_64/fpu/s_sinf.S (__sinf): Likewise. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=16dcea99081d9f4a7fb2fadf13a69ff480feb30f commit 16dcea99081d9f4a7fb2fadf13a69ff480feb30f Author: H.J. Lu Date: Sun Jul 12 14:40:25 2015 -0700 Align stack to 16 bytes when calling __gettimeofday Subtract stack by 24 bytes instead of 16 bytes so that stack is aligned to 16 bytes when calling __gettimeofday. [BZ #18661] * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S (__lll_timedwait_tid): Align stack to 16 bytes when calling __gettimeofday. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=497480af688602f69dc1e49113106d6fcdff3d4d commit 497480af688602f69dc1e49113106d6fcdff3d4d Author: H.J. Lu Date: Sun Jul 12 14:38:58 2015 -0700 Align stack to 16 bytes when calling __setcontext Don't use pop to restore %rdi so that stack is aligned to 16 bytes when calling __setcontext. [BZ #18661] * sysdeps/unix/sysv/linux/x86_64/__start_context.S (__start_context): Don't use pop to restore %rdi so that stack is aligned to 16 bytes when calling __setcontext. https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=46c362d7c702b3ea2fb4e4a17cd633671793fa21 commit 46c362d7c702b3ea2fb4e4a17cd633671793fa21 Author: H.J. Lu Date: Wed Jul 29 03:41:58 2015 -0700 Compile {memcpy,strcmp}-sse2-unaligned.S only for libc {memcpy,strcmp}-sse2-unaligned.S aren't needed in ld.so. * sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: Compile only for libc. * sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: Likewise. ----------------------------------------------------------------------- -- You are receiving this mail because: You are on the CC list for the bug.