mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
581c785bf3
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
62 lines
1.8 KiB
ArmAsm
62 lines
1.8 KiB
ArmAsm
/* Stack-aligning implementation of __tls_get_addr. x86-64 version.
|
|
Copyright (C) 2017-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifdef SHARED
|
|
|
|
# include <sysdep.h>
|
|
# include "tlsdesc.h"
|
|
# include "rtld-offsets.h"
|
|
|
|
/* See __tls_get_addr and __tls_get_addr_slow in dl-tls.c. This function
|
|
call __tls_get_addr_slow on both slow paths. It realigns the stack
|
|
before the call to work around GCC PR58066. */
|
|
|
|
ENTRY (__tls_get_addr)
|
|
mov %fs:DTV_OFFSET, %RDX_LP
|
|
mov GL_TLS_GENERATION_OFFSET+_rtld_local(%rip), %RAX_LP
|
|
/* GL(dl_tls_generation) == dtv[0].counter */
|
|
cmp %RAX_LP, (%rdx)
|
|
jne 1f
|
|
mov TI_MODULE_OFFSET(%rdi), %RAX_LP
|
|
/* dtv[ti->ti_module] */
|
|
# ifdef __LP64__
|
|
salq $4, %rax
|
|
movq (%rdx,%rax), %rax
|
|
# else
|
|
movl (%rdx,%rax, 8), %eax
|
|
# endif
|
|
cmp $-1, %RAX_LP
|
|
je 1f
|
|
add TI_OFFSET_OFFSET(%rdi), %RAX_LP
|
|
ret
|
|
1:
|
|
/* On the slow path, align the stack. */
|
|
pushq %rbp
|
|
cfi_def_cfa_offset (16)
|
|
cfi_offset (%rbp, -16)
|
|
mov %RSP_LP, %RBP_LP
|
|
cfi_def_cfa_register (%rbp)
|
|
and $-16, %RSP_LP
|
|
call __tls_get_addr_slow
|
|
mov %RBP_LP, %RSP_LP
|
|
popq %rbp
|
|
cfi_def_cfa (%rsp, 8)
|
|
ret
|
|
END (__tls_get_addr)
|
|
#endif /* SHARED */
|