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authorRoland McGrath <roland@hack.frob.com>2014-06-13 16:26:56 -0700
committerRoland McGrath <roland@hack.frob.com>2014-06-13 16:26:56 -0700
commit4004f7e4bfbaff1e3de5e7a739eaa777ef4819cd (patch)
tree2495b8910530d2d1933728a46b45ff0a2cf256c5 /nptl/sysdeps/s390/tls.h
parent45193bb8148dd632774362855dc8b9abd71d50e5 (diff)
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Move S390 code out of nptl/sysdeps/s390/.
Diffstat (limited to 'nptl/sysdeps/s390/tls.h')
-rw-r--r--nptl/sysdeps/s390/tls.h204
1 files changed, 0 insertions, 204 deletions
diff --git a/nptl/sysdeps/s390/tls.h b/nptl/sysdeps/s390/tls.h
deleted file mode 100644
index 1c74efa..0000000
--- a/nptl/sysdeps/s390/tls.h
+++ /dev/null
@@ -1,204 +0,0 @@
-/* Definition for thread-local data handling. NPTL/s390 version.
- Copyright (C) 2003-2014 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
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _TLS_H
-#define _TLS_H 1
-
-#include <dl-sysdep.h>
-#ifndef __ASSEMBLER__
-# include <stdbool.h>
-# include <stddef.h>
-# include <stdint.h>
-# include <stdlib.h>
-# include <list.h>
-# include <kernel-features.h>
-
-
-/* Type for the dtv. */
-typedef union dtv
-{
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
-} dtv_t;
-
-
-typedef struct
-{
- void *tcb; /* Pointer to the TCB. Not necessary the
- thread descriptor used by libpthread. */
- dtv_t *dtv;
- void *self; /* Pointer to the thread descriptor. */
- int multiple_threads;
- uintptr_t sysinfo;
- uintptr_t stack_guard;
- int gscope_flag;
-#ifndef __ASSUME_PRIVATE_FUTEX
- int private_futex;
-#endif
-} tcbhead_t;
-
-# ifndef __s390x__
-# define TLS_MULTIPLE_THREADS_IN_TCB 1
-# endif
-
-#else /* __ASSEMBLER__ */
-# include <tcb-offsets.h>
-#endif
-
-
-/* Alignment requirement for the stack. For IA-32 this is governed by
- the SSE memory functions. */
-#define STACK_ALIGN 16
-
-#ifndef __ASSEMBLER__
-/* Get system call information. */
-# include <sysdep.h>
-
-/* This is the size of the initial TCB. Can't be just sizeof (tcbhead_t),
- because NPTL getpid, __libc_alloca_cutoff etc. need (almost) the whole
- struct pthread even when not linked with -lpthread. */
-# define TLS_INIT_TCB_SIZE sizeof (struct pthread)
-
-/* Alignment requirements for the initial TCB. */
-# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
-
-/* This is the size of the TCB. */
-# define TLS_TCB_SIZE sizeof (struct pthread)
-
-/* Alignment requirements for the TCB. */
-# define TLS_TCB_ALIGN __alignof__ (struct pthread)
-
-/* The TCB can have any size and the memory following the address the
- thread pointer points to is unspecified. Allocate the TCB there. */
-# define TLS_TCB_AT_TP 1
-# define TLS_DTV_AT_TP 0
-
-/* Get the thread descriptor definition. */
-# include <nptl/descr.h>
-
-
-/* Install the dtv pointer. The pointer passed is to the element with
- index -1 which contain the length. */
-# define INSTALL_DTV(descr, dtvp) \
- ((tcbhead_t *) (descr))->dtv = (dtvp) + 1
-
-/* Install new dtv for current thread. */
-# define INSTALL_NEW_DTV(dtv) \
- (((tcbhead_t *) __builtin_thread_pointer ())->dtv = (dtv))
-
-/* Return dtv of given thread descriptor. */
-# define GET_DTV(descr) \
- (((tcbhead_t *) (descr))->dtv)
-
-#if defined NEED_DL_SYSINFO && defined SHARED
-# define INIT_SYSINFO \
- _head->sysinfo = GLRO(dl_sysinfo)
-#else
-# define INIT_SYSINFO
-#endif
-
-/* Code to initially initialize the thread pointer. This might need
- special attention since 'errno' is not yet available and if the
- operation can cause a failure 'errno' must not be touched. */
-# define TLS_INIT_TP(thrdescr) \
- ({ void *_thrdescr = (thrdescr); \
- tcbhead_t *_head = _thrdescr; \
- \
- _head->tcb = _thrdescr; \
- /* For now the thread descriptor is at the same address. */ \
- _head->self = _thrdescr; \
- /* New syscall handling support. */ \
- INIT_SYSINFO; \
- \
- __builtin_set_thread_pointer (_thrdescr); \
- NULL; \
- })
-
-/* Value passed to 'clone' for initialization of the thread register. */
-# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd)
-
-/* Return the address of the dtv for the current thread. */
-# define THREAD_DTV() \
- (((tcbhead_t *) __builtin_thread_pointer ())->dtv)
-
-/* Return the thread descriptor for the current thread. */
-# define THREAD_SELF ((struct pthread *) __builtin_thread_pointer ())
-
-/* Magic for libthread_db to know how to do THREAD_SELF. */
-# define DB_THREAD_SELF REGISTER (32, 32, 18 * 4, 0) \
- REGISTER (64, __WORDSIZE, 18 * 8, 0)
-
-/* Access to data in the thread descriptor is easy. */
-#define THREAD_GETMEM(descr, member) \
- descr->member
-#define THREAD_GETMEM_NC(descr, member, idx) \
- descr->member[idx]
-#define THREAD_SETMEM(descr, member, value) \
- descr->member = (value)
-#define THREAD_SETMEM_NC(descr, member, idx, value) \
- descr->member[idx] = (value)
-
-/* Set the stack guard field in TCB head. */
-#define THREAD_SET_STACK_GUARD(value) \
- do \
- { \
- __asm __volatile ("" : : : "a0", "a1"); \
- THREAD_SETMEM (THREAD_SELF, header.stack_guard, value); \
- } \
- while (0)
-#define THREAD_COPY_STACK_GUARD(descr) \
- ((descr)->header.stack_guard \
- = THREAD_GETMEM (THREAD_SELF, header.stack_guard))
-
-/* s390 doesn't have HP_TIMING_*, so for the time being
- use stack_guard as pointer_guard. */
-#define THREAD_GET_POINTER_GUARD() \
- THREAD_GETMEM (THREAD_SELF, header.stack_guard)
-#define THREAD_SET_POINTER_GUARD(value)
-#define THREAD_COPY_POINTER_GUARD(descr)
-
-/* Get and set the global scope generation counter in struct pthread. */
-#define THREAD_GSCOPE_FLAG_UNUSED 0
-#define THREAD_GSCOPE_FLAG_USED 1
-#define THREAD_GSCOPE_FLAG_WAIT 2
-#define THREAD_GSCOPE_RESET_FLAG() \
- do \
- { int __res \
- = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
- THREAD_GSCOPE_FLAG_UNUSED); \
- if (__res == THREAD_GSCOPE_FLAG_WAIT) \
- lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
- } \
- while (0)
-#define THREAD_GSCOPE_SET_FLAG() \
- do \
- { \
- THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
- atomic_write_barrier (); \
- } \
- while (0)
-#define THREAD_GSCOPE_WAIT() \
- GL(dl_wait_lookup_done) ()
-
-#endif /* __ASSEMBLER__ */
-
-#endif /* tls.h */