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Diffstat (limited to 'nptl/sysdeps/mips/tls.h')
| -rw-r--r-- | nptl/sysdeps/mips/tls.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/nptl/sysdeps/mips/tls.h b/nptl/sysdeps/mips/tls.h deleted file mode 100644 index 1cef161010..0000000000 --- a/nptl/sysdeps/mips/tls.h +++ /dev/null @@ -1,161 +0,0 @@ -/* Definition for thread-local data handling. NPTL/MIPS version. - Copyright (C) 2005 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _TLS_H -#define _TLS_H 1 - -#include <dl-sysdep.h> - -#ifndef __ASSEMBLER__ -# include <stdbool.h> -# include <stddef.h> -# include <stdint.h> - -/* Type for the dtv. */ -typedef union dtv -{ - size_t counter; - struct - { - void *val; - bool is_static; - } pointer; -} dtv_t; - -/* Note: rd must be $v1 to be ABI-conformant. */ -# define READ_THREAD_POINTER() \ - ({ void *__result; \ - asm volatile (".set\tpush\n\t.set\tmips32r2\n\t" \ - "rdhwr\t%0, $29\n\t.set\tpop" : "=v" (__result)); \ - __result; }) - -#else /* __ASSEMBLER__ */ -# include <tcb-offsets.h> - -# define READ_THREAD_POINTER(rd) \ - .set push; \ - .set mips32r2; \ - rdhwr rd, $29; \ - .set pop -#endif /* __ASSEMBLER__ */ - - -/* We require TLS support in the tools. */ -#ifndef HAVE_TLS_SUPPORT -# error "TLS support is required." -#endif - -/* Signal that TLS support is available. */ -#define USE_TLS 1 - -#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 - -/* 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. Because our TCB is before the thread - pointer, we don't need this. */ -# define TLS_INIT_TCB_SIZE 0 - -/* Alignment requirements for the initial TCB. */ -# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread) - -/* This is the size of the TCB. Because our TCB is before the thread - pointer, we don't need this. */ -# define TLS_TCB_SIZE 0 - -/* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct pthread) - -/* This is the size we need before TCB - actually, it includes the TCB. */ -# define TLS_PRE_TCB_SIZE \ - (sizeof (struct pthread) \ - + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1))) - -/* The thread pointer (in hardware register $29) points to the end of - the TCB + 0x7000, as for PowerPC. The pthread_descr structure is - immediately in front of the TCB. */ -# define TLS_TCB_OFFSET 0x7000 - -/* 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))[-1].dtv = (dtvp) + 1) - -/* Install new dtv for current thread. */ -# define INSTALL_NEW_DTV(dtv) \ - (THREAD_DTV() = (dtv)) - -/* Return dtv of given thread descriptor. */ -# define GET_DTV(tcbp) \ - (((tcbhead_t *) (tcbp))[-1].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, secondcall) \ - ({ INTERNAL_SYSCALL_DECL (err); \ - long result_var; \ - result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \ - (char *) (tcbp) + TLS_TCB_OFFSET); \ - INTERNAL_SYSCALL_ERROR_P (result_var, err) \ - ? "unknown error" : NULL; }) - -/* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ - (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))[-1].dtv) - -/* Return the thread descriptor for the current thread. */ -# define THREAD_SELF \ - ((struct pthread *) (READ_THREAD_POINTER () \ - - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) - -/* Magic for libthread_db to know how to do THREAD_SELF. */ -# define DB_THREAD_SELF \ - CONST_THREAD_AREA (32, TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE) - -/* 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) - -/* l_tls_offset == 0 is perfectly valid on MIPS, so we have to use some - different value to mean unset l_tls_offset. */ -# define NO_TLS_OFFSET -1 - -#endif /* __ASSEMBLER__ */ - -#endif /* tls.h */ |