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Diffstat (limited to 'sysdeps/hppa/nptl/tls.h')
| -rw-r--r-- | sysdeps/hppa/nptl/tls.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/sysdeps/hppa/nptl/tls.h b/sysdeps/hppa/nptl/tls.h deleted file mode 100644 index d983e10758..0000000000 --- a/sysdeps/hppa/nptl/tls.h +++ /dev/null @@ -1,161 +0,0 @@ -/* Definition for thread-local data handling. NPTL/hppa version. - Copyright (C) 2005-2017 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 <dl-dtv.h> - -#else /* __ASSEMBLER__ */ -# include <tcb-offsets.h> -#endif /* __ASSEMBLER__ */ - -#ifndef __ASSEMBLER__ - -/* Get system call information. */ -# include <sysdep.h> - -/* The TP points to the start of the thread blocks. */ -# define TLS_DTV_AT_TP 1 -# define TLS_TCB_AT_TP 0 - -/* Get the thread descriptor definition. */ -# include <nptl/descr.h> - -typedef struct -{ - dtv_t *dtv; - void *private; -} tcbhead_t; - -/* This is the size of the initial TCB. */ -# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) - -/* Alignment requirements for the initial TCB. */ -# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) - -/* This is the size of the TCB. */ -# define TLS_TCB_SIZE sizeof (tcbhead_t) - -/* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct pthread) - -/* This is the size we need before TCB */ -# define TLS_PRE_TCB_SIZE sizeof (struct pthread) - -/* Install the dtv pointer. The pointer passed is to the element with - index -1 which contain the length. */ -# define INSTALL_DTV(tcbp, dtvp) \ - ((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1 - -/* Install new dtv for current thread. */ -# define INSTALL_NEW_DTV(dtv) \ - ({ tcbhead_t *__tcbp = (tcbhead_t *)__get_cr27(); \ - __tcbp->dtv = dtv; \ - }) - -/* Return dtv of given thread descriptor. */ -# define GET_DTV(tcbp) \ - (((tcbhead_t *) (tcbp))->dtv) - -/* 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(tcbp) \ - ({ __set_cr27(tcbp); NULL; }) - -/* Value passed to 'clone' for initialization of the thread register. */ -# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd) + 1 - -/* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ - ({ tcbhead_t *__tcbp = (tcbhead_t *)__get_cr27(); \ - __tcbp->dtv; \ - }) - -/* Return the thread descriptor for the current thread. */ -# define THREAD_SELF \ - ({ struct pthread *__self; \ - __self = __get_cr27(); \ - __self - 1; \ - }) - -/* Magic for libthread_db to know how to do THREAD_SELF. - Our thread pointer is stored in cr27. See asm/elf.h for the offset into - elf_gregset_t. The thread descriptor is sizeof (struct pthread) away. */ -# define DB_THREAD_SELF \ - REGISTER (32, 32, 53 * 4, -sizeof (struct pthread)) - -/* 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) - -static inline struct pthread *__get_cr27(void) -{ - long cr27; - asm ("mfctl %%cr27, %0" : "=r" (cr27) : ); - return (struct pthread *) cr27; -} - -/* We write to cr27, clobber r26 as the input argument, and clobber - r31 as the link register. */ -static inline void __set_cr27(struct pthread *cr27) -{ - asm ( "ble 0xe0(%%sr2, %%r0)\n\t" - "copy %0, %%r26" - : : "r" (cr27) : "r26", "r31" ); -} - -/* 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 */ |