diff options
author | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-05-18 18:41:24 +0200 |
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committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-05-18 18:41:24 +0200 |
commit | 6a8ccc95528f5e86a8770ed15ce89609b5b3dee9 (patch) | |
tree | bbd4df35b4d4a6a8b00d7a5e61fb2668b850ad62 /libpthread/linuxthreads/sysdeps/sparc | |
parent | 398a27a5b323956344b4f831d892fed3bd9813c7 (diff) |
remove linuxthreads.new, rename linuxthreads.old
Linuxthreads.new isn't really useful with the existence
of NPTL/TLS for well supported architectures. There is no
reason to use LT.new for ARM/MIPS or other architectures
supporting NPTL/TLS. It is not available for noMMU architectures
like Blackfin or FR-V. To simplify the live of the few uClibc-ng
developers, LT.new is removed and LT.old is renamed to LT.
LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/sparc')
-rw-r--r-- | libpthread/linuxthreads/sysdeps/sparc/pspinlock.c | 87 | ||||
-rw-r--r-- | libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.h | 1 | ||||
-rw-r--r-- | libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.sym | 4 | ||||
-rw-r--r-- | libpthread/linuxthreads/sysdeps/sparc/tls.h | 114 |
4 files changed, 1 insertions, 205 deletions
diff --git a/libpthread/linuxthreads/sysdeps/sparc/pspinlock.c b/libpthread/linuxthreads/sysdeps/sparc/pspinlock.c deleted file mode 100644 index 4de152be3..000000000 --- a/libpthread/linuxthreads/sysdeps/sparc/pspinlock.c +++ /dev/null @@ -1,87 +0,0 @@ -/* POSIX spinlock implementation. SPARC32 version. - Copyright (C) 2000 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <pthread.h> -#include "internals.h" - -/* This implementation is similar to the one used in the Linux kernel. */ -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ - __asm__ __volatile__ - ("1: ldstub [%0], %%g2\n" - " orcc %%g2, 0x0, %%g0\n" - " bne,a 2f\n" - " ldub [%0], %%g2\n" - ".subsection 2\n" - "2: orcc %%g2, 0x0, %%g0\n" - " bne,a 2b\n" - " ldub [%0], %%g2\n" - " b,a 1b\n" - ".previous" - : /* no outputs */ - : "r" (lock) - : "g2", "memory", "cc"); - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ - int result; - __asm__ __volatile__ - ("ldstub [%1], %0" - : "=r" (result) - : "r" (lock) - : "memory"); - return result == 0 ? 0 : EBUSY; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ - *lock = 0; - return 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ - /* We can ignore the `pshared' parameter. Since we are busy-waiting - all processes which can access the memory location `lock' points - to can use the spinlock. */ - *lock = 0; - return 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.h b/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.h new file mode 100644 index 000000000..6d6f111f4 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.h @@ -0,0 +1 @@ +#include "../../../linuxthreads/sysdeps/pthread/tcb-offsets.h" diff --git a/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.sym b/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.sym deleted file mode 100644 index aee6be257..000000000 --- a/libpthread/linuxthreads/sysdeps/sparc/tcb-offsets.sym +++ /dev/null @@ -1,4 +0,0 @@ -#include <sysdep.h> -#include <tls.h> - -MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) diff --git a/libpthread/linuxthreads/sysdeps/sparc/tls.h b/libpthread/linuxthreads/sysdeps/sparc/tls.h deleted file mode 100644 index 1e31c2e63..000000000 --- a/libpthread/linuxthreads/sysdeps/sparc/tls.h +++ /dev/null @@ -1,114 +0,0 @@ -/* Definitions for thread-local data handling. linuxthreads/sparc version. - Copyright (C) 2002, 2003, 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, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _TLS_H -#define _TLS_H - -#ifndef __ASSEMBLER__ - -# include <pt-machine.h> -# include <stdbool.h> -# include <stddef.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; -} tcbhead_t; - -#else /* __ASSEMBLER__ */ -# include <tcb-offsets.h> -#endif /* __ASSEMBLER__ */ - -#ifdef HAVE_TLS_SUPPORT - -/* Signal that TLS support is available. */ -# define USE_TLS 1 - -# ifndef __ASSEMBLER__ -/* Get system call information. */ -# include <sysdep.h> - -/* Get the thread descriptor definition. */ -# include <linuxthreads/descr.h> - -/* 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 (struct _pthread_descr_struct) - -/* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) - -/* 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 - -/* 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 *) __thread_self)->dtv = (DTV)) - -/* Return dtv of given thread descriptor. */ -# define GET_DTV(descr) \ - (((tcbhead_t *) (descr))->dtv) - -/* Code to initially initialize the thread pointer. */ -# define TLS_INIT_TP(descr, secondcall) \ - (__thread_self = (__typeof (__thread_self)) (descr), NULL) - -/* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ - (((tcbhead_t *) __thread_self)->dtv) - -# endif - -#else - -# define NONTLS_INIT_TP \ - do { \ - static const tcbhead_t nontls_init_tp \ - = { .multiple_threads = 0 }; \ - __thread_self = (__typeof (__thread_self)) &nontls_init_tp; \ - } while (0) - -#endif /* USE_TLS */ - -#endif /* tls.h */ |