about summary refs log tree commit diff
path: root/sysdeps/x86_64/__longjmp.S
Commit message (Collapse)AuthorAgeFilesLines
* x86-64/cet: Check the restore token in longjmpH.J. Lu2024-01-041-6/+41
| | | | | | | | | | | | | | | | | | | | | | setcontext and swapcontext put a restore token on the old shadow stack which is used to restore the target shadow stack when switching user contexts. When longjmp from a user context, the target shadow stack can be different from the current shadow stack and INCSSP can't be used to restore the shadow stack pointer to the target shadow stack. Update longjmp to search for a restore token. If found, use the token to restore the shadow stack pointer before using INCSSP to pop the shadow stack. Stop the token search and use INCSSP if the shadow stack entry value is the same as the current shadow stack pointer. It is a user error if there is a shadow stack switch without leaving a restore token on the old shadow stack. The only difference between __longjmp.S and __longjmp_chk.S is that __longjmp_chk.S has a check for invalid longjmp usages. Merge __longjmp.S and __longjmp_chk.S by adding the CHECK_INVALID_LONGJMP macro. Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* Update copyright dates with scripts/update-copyrightsPaul Eggert2024-01-011-1/+1
|
* Update copyright dates with scripts/update-copyrightsJoseph Myers2023-01-061-1/+1
|
* Introduce <pointer_guard.h>, extracted from <sysdep.h>Florian Weimer2022-10-181-0/+1
| | | | | | | | | | | | | | This allows us to define a generic no-op version of PTR_MANGLE and PTR_DEMANGLE. In the future, we can use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources, avoiding an unintended loss of hardening due to missing include files or unlucky header inclusion ordering. In i386 and x86_64, we can avoid a <tls.h> dependency in the C code by using the computed constant from <tcb-offsets.h>. <sysdep.h> no longer includes these definitions, so there is no cyclic dependency anymore when computing the <tcb-offsets.h> constants. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Update copyright dates with scripts/update-copyrightsPaul Eggert2022-01-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
* Update copyright dates with scripts/update-copyrightsPaul Eggert2021-01-021-1/+1
| | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-011-1/+1
|
* Prefer https to http for gnu.org and fsf.org URLsPaul Eggert2019-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
* Update copyright dates with scripts/update-copyrights.Joseph Myers2019-01-011-1/+1
| | | | | | | * 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.
* x86: Support shadow stack pointer in setjmp/longjmpH.J. Lu2018-07-141-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Save and restore shadow stack pointer in setjmp and longjmp to support shadow stack in Intel CET. Use feature_1 in tcbhead_t to check if shadow stack is enabled before saving and restoring shadow stack pointer. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * sysdeps/i386/__longjmp.S: Include <jmp_buf-ssp.h>. (__longjmp): Restore shadow stack pointer if shadow stack is enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp isn't defined for __longjmp_cancel. * sysdeps/i386/bsd-_setjmp.S: Include <jmp_buf-ssp.h>. (_setjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/i386/bsd-setjmp.S: Include <jmp_buf-ssp.h>. (setjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/i386/setjmp.S: Include <jmp_buf-ssp.h>. (__sigsetjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Include <jmp_buf-ssp.h>. (____longjmp_chk): Restore shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers): Remove jmp_buf-ssp.sym. * sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Include <jmp_buf-ssp.h>. (____longjmp_chk): Restore shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined. * sysdeps/x86/Makefile (gen-as-const-headers): Add jmp_buf-ssp.sym. * sysdeps/x86/jmp_buf-ssp.sym: New dummy file. * sysdeps/x86_64/__longjmp.S: Include <jmp_buf-ssp.h>. (__longjmp): Restore shadow stack pointer if shadow stack is enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp isn't defined for __longjmp_cancel. * sysdeps/x86_64/setjmp.S: Include <jmp_buf-ssp.h>. (__sigsetjmp): Save shadow stack pointer if shadow stack is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2018-01-011-1/+1
| | | | | | | * 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.Joseph Myers2017-01-011-1/+1
|
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
|
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
|
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
|
* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
|
* Add systemtap static probe points in setjmp/longjmp on x86.Roland McGrath2012-05-251-0/+4
|
* x32: Don't lose high bits of %rbp in setjmp/longjmp mangling/demangling.Roland McGrath2012-05-211-3/+11
|
* Use R*_LP on SP and PC in __longjmp.S and setjmp.SH.J. Lu2012-05-151-5/+5
|
* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-3/+2
|
* Fix x86-64 ____longjmp_chk to handle signal stacks.Ulrich Drepper2009-07-301-5/+1
| | | | | | The simple test previously used might trigger if the longjmp jumps from the signal stack to the normal stack. We now explicitly test for this case.
* Add missing .text directives.H.J. Lu2009-05-211-1/+2
| | | | The ____longjmp_chk functions on x86 and x86-64 were placed in .rodata.str1.1.
* Check for valid stack frame in longjmp.Ulrich Drepper2009-05-151-0/+3
| | | | | | | If longjmp restores the stack frame to an address which is beyond the stack frame at the time of the longjmp call it would install an uninitialized stack frame. If compiled with _FORTIFY_SOURCE defined, longjmp will now bail out in this situation.
* 2006-01-12 Roland McGrath <roland@redhat.com>Roland McGrath2006-01-121-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * sysdeps/alpha/__longjmp.S: Include <jmpbuf-offsets.h> instead of <bits/setjmp.h>. * sysdeps/alpha/setjmp.S: Likewise. * sysdeps/i386/__longjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/bsd-setjmp.S: Likewise. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/powerpc/powerpc32/__longjmp-common.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: * sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise. * sysdeps/powerpc/powerpc64/__longjmp-common.S: Likewise. * sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise. * sysdeps/sh/sh3/setjmp.S: Likewise. * sysdeps/sh/sh4/setjmp.S: Likewise. * sysdeps/sparc/sparc32/__longjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Likewise. * sysdeps/x86_64/__longjmp.S: Likewise. * sysdeps/x86_64/setjmp.S: Likewise. * sysdeps/mach/hurd/i386/longjmp-ts.c: Include <jmpbuf-offsets.h>. * sysdeps/mach/hurd/powerpc/longjmp-ts.c: Likewise. * sysdeps/mach/hurd/alpha/longjmp-ts.c: Likewise. * sysdeps/alpha/jmpbuf-unwind.h: Likewise. * sysdeps/hppa/jmpbuf-unwind.h: Likewise. * sysdeps/i386/jmpbuf-unwind.h: Likewise. * sysdeps/powerpc/jmpbuf-unwind.h: Likewise. * sysdeps/sparc/sparc32/jmpbuf-unwind.h: Likewise. * sysdeps/sparc/sparc64/jmpbuf-unwind.h: Likewise. * sysdeps/x86_64/jmpbuf-unwind.h: Likewise. * setjmp/jmpbuf-offsets.h: File removed. * include/bits/setjmp.h: File removed.
* * sysdeps/x86_64/__longjmp.S: No need to make sure return value isUlrich Drepper2005-12-281-3/+0
| | | | != 0, the caller did that.
* Don't confuse unwinder by loading mangled values in %rbp and %rsp registers ↵Ulrich Drepper2005-12-281-10/+13
| | | | and by wrong cfi.
* Also protect SP and BP.Ulrich Drepper2005-12-221-0/+2
|
* * elf/Versions [GLIBC_PRIVATE]: Export __pointer_chk_guard if defined.Ulrich Drepper2005-12-181-1/+4
| | | | | | | | | | | | | | | | | | | | | | | * elf/rtld.c: Define __pointer_chk_guard_local and if necessary __pointer_chk_guard. (_rtld_global_ro): Initialize _dl_pointer_guard. (dl_main): Initialize __pointer_chk_guard_local and either __pointer_chk_guard or TLS value if necessary. (process_envvars): Recognize and handle LD_POINTER_GUARD. * sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_pointer_guard. * sysdeps/i386/__longjmp.S: Use PTR_DEMANGLE for PC if defined. * sysdeps/x86_64/__longjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Use PTR_MANGLE for PC if defined. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/setjmp.S: Likewise. [IS_IN_rtld]: Avoid call to __sigjmp_save. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and PTR_DEMANGLE. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise. * sysdeps/i386/elf/setjmp.S: Removed. * sysdeps/i386/elf/bsd-setjmp.S: Removed.
* (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper2004-12-221-15/+12
|
* 2.5-18.1Jakub Jelinek2007-07-121-12/+15
|
* Update.Andreas Jaeger2004-01-111-1/+11
| | | | | | | | 2004-01-11 Andreas Jaeger <aj@suse.de> * sysdeps/x86_64/__longjmp.S: Add cfi directives. * sysdeps/unix/sysv/linux/sparc/sysdep.h (INLINE_CLONE_SYSCALL):
* Update.Andreas Jaeger2001-09-191-0/+44
* sysdeps/unix/sysv/linux/x86_64/Makefile: New file. * sysdeps/unix/sysv/linux/x86_64/Versions: New file. * sysdeps/unix/sysv/linux/x86_64/bits/fcntl.h: New file. * sysdeps/unix/sysv/linux/x86_64/bits/mman.h: New file. * sysdeps/unix/sysv/linux/x86_64/bits/stat.h: New file. * sysdeps/unix/sysv/linux/x86_64/bits/statfs.h: New file. * sysdeps/unix/sysv/linux/x86_64/bits/time.h: New file. * sysdeps/unix/sysv/linux/x86_64/bits/types.h: New file. * sysdeps/unix/sysv/linux/x86_64/brk.c: New file. * sysdeps/unix/sysv/linux/x86_64/clone.S: New file. * sysdeps/unix/sysv/linux/x86_64/fstatfs64.c: New file. * sysdeps/unix/sysv/linux/x86_64/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/x86_64/fxstat.c: New file. * sysdeps/unix/sysv/linux/x86_64/fxstat64.c: New file. * sysdeps/unix/sysv/linux/x86_64/getdents.c: New file. * sysdeps/unix/sysv/linux/x86_64/getdents64.c: New file. * sysdeps/unix/sysv/linux/x86_64/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: New file. * sysdeps/unix/sysv/linux/x86_64/glob64.c: New file. * sysdeps/unix/sysv/linux/x86_64/lxstat.c: New file. * sysdeps/unix/sysv/linux/x86_64/lxstat64.c: New file. * sysdeps/unix/sysv/linux/x86_64/mmap64.c: New file. * sysdeps/unix/sysv/linux/x86_64/pread64.c: New file. * sysdeps/unix/sysv/linux/x86_64/profil-counter.h: New file. * sysdeps/unix/sysv/linux/x86_64/pwrite64.c: New file. * sysdeps/unix/sysv/linux/x86_64/readdir.c: New file. * sysdeps/unix/sysv/linux/x86_64/readdir64.c: New file. * sysdeps/unix/sysv/linux/x86_64/readdir64_r.c: New file. * sysdeps/unix/sysv/linux/x86_64/readdir_r.c: New file. * sysdeps/unix/sysv/linux/x86_64/recv.c: New file. * sysdeps/unix/sysv/linux/x86_64/register-dump.h: New file. * sysdeps/unix/sysv/linux/x86_64/send.c: New file. * sysdeps/unix/sysv/linux/x86_64/setrlimit64.c: New file. * sysdeps/unix/sysv/linux/x86_64/sigaction.c: New file. * sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h: New file. * sysdeps/unix/sysv/linux/x86_64/sigpending.c: New file. * sysdeps/unix/sysv/linux/x86_64/sigprocmask.c: New file. * sysdeps/unix/sysv/linux/x86_64/sigsuspend.c: New file. * sysdeps/unix/sysv/linux/x86_64/statfs64.c: New file. * sysdeps/unix/sysv/linux/x86_64/sys/perm.h: New file. * sysdeps/unix/sysv/linux/x86_64/sys/procfs.h: New file. * sysdeps/unix/sysv/linux/x86_64/sys/reg.h: New file. * sysdeps/unix/sysv/linux/x86_64/sys/ucontext.h: New file. * sysdeps/unix/sysv/linux/x86_64/sys/user.h: New file. * sysdeps/unix/sysv/linux/x86_64/syscall.S: New file. * sysdeps/unix/sysv/linux/x86_64/syscalls.list: New file. * sysdeps/unix/sysv/linux/x86_64/sysdep.S: New file. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: New file. * sysdeps/unix/sysv/linux/x86_64/time.c: New file. * sysdeps/unix/sysv/linux/x86_64/truncate64.c: New file. * sysdeps/unix/sysv/linux/x86_64/umount.c: New file. * sysdeps/unix/sysv/linux/x86_64/vfork.S: New file. * sysdeps/unix/sysv/linux/x86_64/xstat.c: New file. * sysdeps/unix/sysv/linux/x86_64/xstat64.c: New file. * sysdeps/unix/x86_64/sysdep.S: New file. * sysdeps/unix/x86_64/sysdep.h: New file. * sysdeps/x86_64/Implies: New file. * sysdeps/x86_64/Makefile: New file. * sysdeps/x86_64/Versions: New file. * sysdeps/x86_64/__longjmp.S: New file. * sysdeps/x86_64/abort-instr.h: New file. * sysdeps/x86_64/atomicity.h: New file. * sysdeps/x86_64/bits/endian.h: New file. * sysdeps/x86_64/bits/setjmp.h: New file. * sysdeps/x86_64/bits/string.h: New file. * sysdeps/x86_64/bp-asm.h: New file. * sysdeps/x86_64/bsd-_setjmp.S: New file. * sysdeps/x86_64/bsd-setjmp.S: New file. * sysdeps/x86_64/dl-machine.h: New file. * sysdeps/x86_64/elf/initfini.c: New file. * sysdeps/x86_64/elf/start.S: New file. * sysdeps/x86_64/ffs.c: New file. * sysdeps/x86_64/ffsll.c: New file. * sysdeps/x86_64/fpu/bits/fenv.h: New file. * sysdeps/x86_64/fpu/bits/mathdef.h: New file. * sysdeps/x86_64/fpu/e_acosl.c: New file. * sysdeps/x86_64/fpu/e_atan2l.c: New file. * sysdeps/x86_64/fpu/e_exp2l.S: New file. * sysdeps/x86_64/fpu/e_expl.c: New file. * sysdeps/x86_64/fpu/e_fmodl.S: New file. * sysdeps/x86_64/fpu/e_log10l.S: New file. * sysdeps/x86_64/fpu/e_log2l.S: New file. * sysdeps/x86_64/fpu/e_logl.S: New file. * sysdeps/x86_64/fpu/e_powl.S: New file. * sysdeps/x86_64/fpu/e_rem_pio2l.c: New file. * sysdeps/x86_64/fpu/e_scalbl.S: New file. * sysdeps/x86_64/fpu/e_sqrtl.c: New file. * sysdeps/x86_64/fpu/fclrexcpt.c: New file. * sysdeps/x86_64/fpu/fedisblxcpt.c: New file. * sysdeps/x86_64/fpu/feenablxcpt.c: New file. * sysdeps/x86_64/fpu/fegetenv.c: New file. * sysdeps/x86_64/fpu/fegetexcept.c: New file. * sysdeps/x86_64/fpu/fegetround.c: New file. * sysdeps/x86_64/fpu/feholdexcpt.c: New file. * sysdeps/x86_64/fpu/fesetenv.c: New file. * sysdeps/x86_64/fpu/fesetround.c: New file. * sysdeps/x86_64/fpu/fgetexcptflg.c: New file. * sysdeps/x86_64/fpu/fraiseexcpt.c: New file. * sysdeps/x86_64/fpu/fsetexcptflg.c: New file. * sysdeps/x86_64/fpu/ftestexcept.c: New file. * sysdeps/x86_64/fpu/libm-test-ulps: New file. * sysdeps/x86_64/fpu/math_ldbl.h: New file. * sysdeps/x86_64/fpu/printf_fphex.c: New file. * sysdeps/x86_64/fpu/s_atanl.c: New file. * sysdeps/x86_64/fpu/s_cosl.S: New file. * sysdeps/x86_64/fpu/s_expm1l.S: New file. * sysdeps/x86_64/fpu/s_fpclassifyl.c: New file. * sysdeps/x86_64/fpu/s_isinfl.c: New file. * sysdeps/x86_64/fpu/s_isnanl.c: New file. * sysdeps/x86_64/fpu/s_log1pl.S: New file. * sysdeps/x86_64/fpu/s_logbl.c: New file. * sysdeps/x86_64/fpu/s_nextafterl.c: New file. * sysdeps/x86_64/fpu/s_nexttoward.c: New file. * sysdeps/x86_64/fpu/s_nexttowardf.c: New file. * sysdeps/x86_64/fpu/s_rintl.c: New file. * sysdeps/x86_64/fpu/s_significandl.c: New file. * sysdeps/x86_64/fpu/s_sincosl.S: New file. * sysdeps/x86_64/fpu/s_sinl.S: New file. * sysdeps/x86_64/fpu/s_tanl.S: New file. * sysdeps/x86_64/gmp-mparam.h: New file. * sysdeps/x86_64/hp-timing.c: New file. * sysdeps/x86_64/hp-timing.h: New file. * sysdeps/x86_64/htonl.S: New file. * sysdeps/x86_64/memusage.h: New file. * sysdeps/x86_64/setjmp.S: New file. * sysdeps/x86_64/soft-fp/sfp-machine.h: New file. * sysdeps/x86_64/stackinfo.h: New file. * sysdeps/x86_64/sysdep.h: New file. * sysdeps/unix/sysv/linux/x86_64/ldd-rewrite.sed: New file.