diff options
Diffstat (limited to 'ports/sysdeps/alpha/nptl')
| -rw-r--r-- | ports/sysdeps/alpha/nptl/Makefile | 20 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/nptl/pthread_spin_lock.S | 44 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/nptl/pthread_spin_trylock.S | 45 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/nptl/pthreaddef.h | 37 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/nptl/tcb-offsets.sym | 14 | ||||
| -rw-r--r-- | ports/sysdeps/alpha/nptl/tls.h | 138 |
6 files changed, 298 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/nptl/Makefile b/ports/sysdeps/alpha/nptl/Makefile new file mode 100644 index 0000000000..e31b03c2dc --- /dev/null +++ b/ports/sysdeps/alpha/nptl/Makefile @@ -0,0 +1,20 @@ +# 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, see +# <http://www.gnu.org/licenses/>. + +ifeq ($(subdir),csu) +gen-as-const-headers += tcb-offsets.sym +endif diff --git a/ports/sysdeps/alpha/nptl/pthread_spin_lock.S b/ports/sysdeps/alpha/nptl/pthread_spin_lock.S new file mode 100644 index 0000000000..856d6506be --- /dev/null +++ b/ports/sysdeps/alpha/nptl/pthread_spin_lock.S @@ -0,0 +1,44 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@twiddle.net>, 2003. + + 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/>. */ + + + .text + .align 4 + + .globl pthread_spin_lock + .ent pthread_spin_lock +pthread_spin_lock: + .frame $sp, 0, $26, 0 + .prologue 0 + +0: ldl_l $1, 0($16) + lda $2, 1 + lda $0, 0 + bne $1, 1f + + stl_c $2, 0($16) + beq $2, 1f + mb + ret + +1: ldl $1, 0($16) + bne $1, 1b + unop + br 0b + + .end pthread_spin_lock diff --git a/ports/sysdeps/alpha/nptl/pthread_spin_trylock.S b/ports/sysdeps/alpha/nptl/pthread_spin_trylock.S new file mode 100644 index 0000000000..f7d4665fb0 --- /dev/null +++ b/ports/sysdeps/alpha/nptl/pthread_spin_trylock.S @@ -0,0 +1,45 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@twiddle.net>, 2003. + + 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/>. */ + + +#define _ERRNO_H 1 +#include <bits/errno.h> + + .text + .align 4 + + .globl pthread_spin_trylock + .ent pthread_spin_trylock +pthread_spin_trylock: + .frame $sp, 0, $26, 0 + .prologue 0 + +0: ldl_l $1, 0($16) + lda $2, 1 + lda $0, EBUSY + bne $1, 1f + + stl_c $2, 0($16) + beq $2, 2f + mb + lda $0, 0 + +1: ret +2: br 0b + + .end pthread_spin_trylock diff --git a/ports/sysdeps/alpha/nptl/pthreaddef.h b/ports/sysdeps/alpha/nptl/pthreaddef.h new file mode 100644 index 0000000000..80dd1561d0 --- /dev/null +++ b/ports/sysdeps/alpha/nptl/pthreaddef.h @@ -0,0 +1,37 @@ +/* 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, see + <http://www.gnu.org/licenses/>. */ + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (4 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. The ABI requires 16. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 4096 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + +/* XXX Until we have a better place keep the definitions here. */ + +/* While there is no such syscall. */ +#define __exit_thread_inline(val) \ + INLINE_SYSCALL (exit, 1, (val)) diff --git a/ports/sysdeps/alpha/nptl/tcb-offsets.sym b/ports/sysdeps/alpha/nptl/tcb-offsets.sym new file mode 100644 index 0000000000..c21a791040 --- /dev/null +++ b/ports/sysdeps/alpha/nptl/tcb-offsets.sym @@ -0,0 +1,14 @@ +#include <sysdep.h> +#include <tls.h> + +-- + +-- Abuse tls.h macros to derive offsets relative to the thread register. +-- # define __builtin_thread_pointer() ((void *) 0) +-- # define thread_offsetof(mem) ((void *) &THREAD_SELF->mem - (void *) 0) +-- Ho hum, this doesn't work in gcc4, so Know Things about THREAD_SELF +#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread)) + +MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) +PID_OFFSET thread_offsetof (pid) +TID_OFFSET thread_offsetof (tid) diff --git a/ports/sysdeps/alpha/nptl/tls.h b/ports/sysdeps/alpha/nptl/tls.h new file mode 100644 index 0000000000..18c29c80fa --- /dev/null +++ b/ports/sysdeps/alpha/nptl/tls.h @@ -0,0 +1,138 @@ +/* Definition for thread-local data handling. NPTL/Alpha version. + Copyright (C) 2003, 2005, 2006, 2007, 2012 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> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + struct + { + void *val; + bool is_static; + } pointer; +} dtv_t; + +/* 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. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN 16 + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (tcbhead_t) + +/* 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 16 + +/* 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 ((void *)(tcbp)), NULL) + +/* 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 () - 1) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + REGISTER (64, 64, 32 * 8, -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) () + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif /* __ASSEMBLER__ */ + +#endif /* tls.h */ |