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
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/* Definition for thread-local data handling. Generic version.
|
|
Copyright (C) 2002-2022 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/>. */
|
|
|
|
/* An architecture-specific version of this file has to defined a
|
|
number of symbols:
|
|
|
|
TCB_ALIGNMENT
|
|
|
|
Alignment of THREAD_SELF (struct pthread *) and the thread
|
|
pointer.
|
|
|
|
TLS_TCB_AT_TP or TLS_DTV_AT_TP
|
|
|
|
The presence of one of these symbols signals which variant of
|
|
the TLS ABI is used. There are in the moment two variants
|
|
available:
|
|
|
|
* the thread pointer points to a thread control block
|
|
|
|
* the thread pointer points to the dynamic thread vector
|
|
|
|
|
|
TLS_TCB_SIZE
|
|
|
|
This is the size of the thread control block structure. How
|
|
this is actually defined depends on the ABI. The thread control
|
|
block could be internal descriptor of the thread library or
|
|
just a data structure which allows finding the DTV.
|
|
|
|
TLS_INIT_TCB_SIZE
|
|
|
|
Similarly, but this value is only used at startup and in the
|
|
dynamic linker itself. There are no threads in use at that time.
|
|
|
|
|
|
INSTALL_DTV(tcb, init_dtv)
|
|
|
|
This macro must install the given initial DTV into the thread control
|
|
block TCB. The normal runtime functionality must then be able to
|
|
use the value.
|
|
|
|
|
|
TLS_INIT_TP(tcb)
|
|
|
|
This macro must initialize the thread pointer to enable normal TLS
|
|
operation. The parameter is a pointer to the thread control block.
|
|
ld.so calls this macro once.
|
|
|
|
|
|
THREAD_DTV()
|
|
|
|
This macro returns the address of the DTV of the current thread.
|
|
This normally is done using the thread register which points
|
|
to the dtv or the TCB (from which the DTV can found).
|
|
*/
|