From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4736 invoked by alias); 2 Aug 2015 17:41:07 -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 4647 invoked by uid 55); 2 Aug 2015 17:41:03 -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: Sun, 02 Aug 2015 17:41:00 -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: 2015-08/txt/msg00019.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=15128 --- Comment #23 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/plt/master has been created at d53574deb7a0f49da15eca67d01bc188b4f89948 (commit) - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d53574deb7a0f49da15eca67d01bc188b4f89948 commit d53574deb7a0f49da15eca67d01bc188b4f89948 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=3b06f9e926254743bcf61a0971841312c737b2f1 commit 3b06f9e926254743bcf61a0971841312c737b2f1 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=5100a9262c79946feddb83ad46d8448312d0a792 commit 5100a9262c79946feddb83ad46d8448312d0a792 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=200eb0e798153aa644e6a6c551c685a25f1f0d1f commit 200eb0e798153aa644e6a6c551c685a25f1f0d1f 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=6642aacc2b3f2779448f9878b9a320dd9bd184ab commit 6642aacc2b3f2779448f9878b9a320dd9bd184ab 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] ($(objpfx)tst-ld-sse-use.out): New rule. * sysdeps/x86/Makefile [$(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 $(all-rtld-routines). https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f95bec159176aef22fb9465793b8fa5d354bea31 commit f95bec159176aef22fb9465793b8fa5d354bea31 Author: H.J. Lu Date: Sat Jul 11 13:25:25 2015 -0700 Save and restore vector registers in x86-64 ld.so This patch initiaizes GLRO(dl_x86_xstate) in dl_platform_init to indicate if the processor supports SSE, AVX or AVX512. It uses this information to properly save and restore vector registers in ld.so. Now we can use SSE in ld.so and delete FOREIGN_CALL macros. [BZ #15128] * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include 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 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. Fix tcbhead_t https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a018fe7a7229c3048dcd5765716b719905820f64 commit a018fe7a7229c3048dcd5765716b719905820f64 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=dececeb4701899392f987a0d9eb92fe8fd0e9e32 commit dececeb4701899392f987a0d9eb92fe8fd0e9e32 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=18a1650a345418cc2a4c83372cb4402d0da4535d commit 18a1650a345418cc2a4c83372cb4402d0da4535d 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=1c1d5084bb4de396487418ca2fd96538e489100e commit 1c1d5084bb4de396487418ca2fd96538e489100e 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.