diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/arc')
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/Makefile.arch | 13 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/dl-tls.h | 28 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h | 32 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/libc-tls.c | 27 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/pthread_spin_lock.S | 21 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S | 31 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/pthreaddef.h | 40 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/tcb-offsets.sym | 8 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/arc/tls.h | 160 |
9 files changed, 360 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/arc/Makefile.arch b/libpthread/nptl/sysdeps/arc/Makefile.arch new file mode 100644 index 000000000..1c728847e --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/Makefile.arch @@ -0,0 +1,13 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2005 Steven J. Hill <sjhill@uclibc.org> +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +CFLAGS-pt-raise.c = -DNOT_IN_libc -DIS_IN_libpthread + +ASFLAGS-pthread_spin_lock.S = -DNOT_IN_libc -DIS_IN_libpthread +ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread + +libc_arch_a_CSRC = libc-tls.c diff --git a/libpthread/nptl/sysdeps/arc/dl-tls.h b/libpthread/nptl/sysdeps/arc/dl-tls.h new file mode 100644 index 000000000..34e54e4d3 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/dl-tls.h @@ -0,0 +1,28 @@ +/* Thread-local storage handling in the ELF dynamic linker. ARC 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, see + <http://www.gnu.org/licenses/>. */ + + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + + +extern void *__tls_get_addr (tls_index *ti); diff --git a/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h b/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h new file mode 100644 index 000000000..11a043b23 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h @@ -0,0 +1,32 @@ +/* Copyright (C) 2005,2006 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/>. */ + +#include <setjmp.h> +#include <stdint.h> +#include <unwind.h> + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ +#undef _JMPBUF_UNWINDS +#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ + ((void *) (address) < (void *) demangle (jmpbuf[__JMP_BUF_SP])) + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[__JMP_BUF_SP] - (_adj)) diff --git a/libpthread/nptl/sysdeps/arc/libc-tls.c b/libpthread/nptl/sysdeps/arc/libc-tls.c new file mode 100644 index 000000000..f53ad112e --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/libc-tls.c @@ -0,0 +1,27 @@ +/* + * Thread-local storage handling in statically linked binaries. + * Copyright (C) 2009 Free Software Foundation, Inc. + * + * Based on GNU C Library (file: libc/sysdeps/sh/libc-tls.c) + * + * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com) + * Copyright (C) 2010 STMicroelectronics Ltd. + * + * Author: Filippo Arcidiacono <filippo.arcidiacono@st.com> + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +#if defined(USE_TLS) && USE_TLS + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} + +#endif diff --git a/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S b/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S new file mode 100644 index 000000000..7a5e630b8 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S @@ -0,0 +1,21 @@ +/* + * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com) + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sysdep.h> + +; int pthread_spin_lock(pthread_spinlock_t *lock) +; 1 - locked, 0 - unlocked + +ENTRY(pthread_spin_lock) + mov_s r1, 1 + nop_s +1: + ex r1, [r0] + breq r1, 1, 1b + + j.d [blink] + mov r0, 0 +END(pthread_spin_lock) diff --git a/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S new file mode 100644 index 000000000..25f5421a2 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com) + * + * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sysdep.h> + +#define _ERRNO_H 1 +#include <bits/errno.h> + +; int pthread_spin_trylock(pthread_spinlock_t *lock) +; Return EBUSY is already locked, 0 if not + +ENTRY(pthread_spin_trylock) + mov_s r1, 1 + ex r1, [r0] + tst r1, r1 + mov.z r0, 0 + j.d [blink] + mov.nz r0, EBUSY + +; slightly faster, but difficult to follow +; mov_s r1, r0 +; mov_s r0, 1 +; ex r0, [r1] +; tst r0, r0 +; j.d [blink] +; mov.nz r0, EBUSY + +END(pthread_spin_trylock) diff --git a/libpthread/nptl/sysdeps/arc/pthreaddef.h b/libpthread/nptl/sysdeps/arc/pthreaddef.h new file mode 100644 index 000000000..51625e4e6 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/pthreaddef.h @@ -0,0 +1,40 @@ +/* Copyright (C) 2003 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. */ + +#include <sysdep.h> + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 8 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 8 + + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + + +/* XXX Until we have a better place keep the definitions here. */ +#define __exit_thread_inline(val) \ + INLINE_SYSCALL (exit, 1, (val)) diff --git a/libpthread/nptl/sysdeps/arc/tcb-offsets.sym b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym new file mode 100644 index 000000000..cbf0ae42c --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym @@ -0,0 +1,8 @@ +#include <sysdep.h> +#include <tls.h> + +PTHREAD_TID offsetof (struct pthread, tid) +PTHREAD_PID offsetof (struct pthread, pid) +MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +TLS_PRE_TCB_SIZE sizeof (struct pthread) +TLS_TCB_SIZE sizeof(tcbhead_t) diff --git a/libpthread/nptl/sysdeps/arc/tls.h b/libpthread/nptl/sysdeps/arc/tls.h new file mode 100644 index 000000000..63dd11398 --- /dev/null +++ b/libpthread/nptl/sysdeps/arc/tls.h @@ -0,0 +1,160 @@ +/* Definition for thread-local data handling. NPTL/ARC version. + * + * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com) + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#ifndef _TLS_H +#define _TLS_H + +#ifndef __ASSEMBLER__ +# include <stdbool.h> +# include <stddef.h> +# include <stdint.h> +# include <stdlib.h> +# include <list.h> +# include <sysdep.h> +# include <bits/kernel-features.h> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + struct + { + void *val; + bool is_static; + } pointer; +} dtv_t; + +typedef struct +{ + dtv_t *dtv; + uintptr_t pointer_guard; +} tcbhead_t; + +# define TLS_MULTIPLE_THREADS_IN_TCB 1 + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> + +.macro THREAD_SELF reg + # struct pthread is just ahead of TCB + sub \reg, r25, TLS_PRE_TCB_SIZE +.endm + +.macro SET_TP tcb + mov r25, \tcb +.endm + +#endif /* __ASSEMBLER__ */ + + +/* We require TLS support in the tools. */ +#define HAVE_TLS_SUPPORT +#define HAVE___THREAD 1 +#define HAVE_TLS_MODEL_ATTRIBUTE 1 +/* Signal that TLS support is available. */ +# define USE_TLS 1 + +#ifndef __ASSEMBLER__ + +/* Get system call information. */ +# include <sysdep.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. */ +#ifndef TLS_TCB_SIZE +# define TLS_TCB_SIZE sizeof (tcbhead_t) +#endif + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct pthread) + +/* The TLS blocks start right after the TCB. */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <descr.h> + +/* 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) \ + (THREAD_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, secondcall) \ + ({ \ + __builtin_set_thread_pointer(tcbp); \ + NULL; \ + }) + +/* Return the address of the dtv for the current thread. + TP points to TCB where 1st item is dtv pointer */ +# define THREAD_DTV() \ + (((tcbhead_t *)__builtin_thread_pointer())->dtv) + +/* Return the thread descriptor for the current thread. + pthread sits right before TCB */ +# define THREAD_SELF \ + ((struct pthread *)__builtin_thread_pointer() - 1) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + CONST_THREAD_AREA (32, 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) + +/* 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 */ |