diff options
Diffstat (limited to 'sysdeps/s390/nptl')
| -rw-r--r-- | sysdeps/s390/nptl/Makefile | 24 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/pthread_spin_init.c | 19 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/pthread_spin_lock.c | 33 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/pthread_spin_trylock.c | 33 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/pthread_spin_unlock.c | 32 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/pthreaddef.h | 33 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/tcb-offsets.sym | 7 | ||||
| -rw-r--r-- | sysdeps/s390/nptl/tls.h | 204 |
8 files changed, 385 insertions, 0 deletions
diff --git a/sysdeps/s390/nptl/Makefile b/sysdeps/s390/nptl/Makefile new file mode 100644 index 0000000000..f1d18d0c06 --- /dev/null +++ b/sysdeps/s390/nptl/Makefile @@ -0,0 +1,24 @@ +# Copyright (C) 2003-2014 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 ($(subdir),csu) +gen-as-const-headers += tcb-offsets.sym +endif + +ifeq ($(subdir),nptl) +libpthread-routines += ptw-sysdep +endif diff --git a/sysdeps/s390/nptl/pthread_spin_init.c b/sysdeps/s390/nptl/pthread_spin_init.c new file mode 100644 index 0000000000..988c2197c0 --- /dev/null +++ b/sysdeps/s390/nptl/pthread_spin_init.c @@ -0,0 +1,19 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 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/>. */ + +/* Not needed. pthread_spin_init is an alias for pthread_spin_unlock. */ diff --git a/sysdeps/s390/nptl/pthread_spin_lock.c b/sysdeps/s390/nptl/pthread_spin_lock.c new file mode 100644 index 0000000000..d03bdaf3e2 --- /dev/null +++ b/sysdeps/s390/nptl/pthread_spin_lock.c @@ -0,0 +1,33 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 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/>. */ + +#include "pthreadP.h" + +int +pthread_spin_lock (lock) + pthread_spinlock_t *lock; +{ + int oldval; + + __asm __volatile ("0: lhi %0,0\n" + " cs %0,%2,%1\n" + " jl 0b" + : "=&d" (oldval), "=Q" (*lock) + : "d" (1), "m" (*lock) : "cc" ); + return 0; +} diff --git a/sysdeps/s390/nptl/pthread_spin_trylock.c b/sysdeps/s390/nptl/pthread_spin_trylock.c new file mode 100644 index 0000000000..6cfd05d5e0 --- /dev/null +++ b/sysdeps/s390/nptl/pthread_spin_trylock.c @@ -0,0 +1,33 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 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/>. */ + +#include <errno.h> +#include "pthreadP.h" + +int +pthread_spin_trylock (lock) + pthread_spinlock_t *lock; +{ + int old; + + __asm __volatile ("cs %0,%3,%1" + : "=d" (old), "=Q" (*lock) + : "0" (0), "d" (1), "m" (*lock) : "cc" ); + + return old != 0 ? EBUSY : 0; +} diff --git a/sysdeps/s390/nptl/pthread_spin_unlock.c b/sysdeps/s390/nptl/pthread_spin_unlock.c new file mode 100644 index 0000000000..1da58759cb --- /dev/null +++ b/sysdeps/s390/nptl/pthread_spin_unlock.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 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/>. */ + +/* Ugly hack to avoid the declaration of pthread_spin_init. */ +#define pthread_spin_init pthread_spin_init_XXX +#include "pthreadP.h" +#undef pthread_spin_init + +int +pthread_spin_unlock (pthread_spinlock_t *lock) +{ + __asm __volatile (" xc %O0(4,%R0),%0\n" + " bcr 15,0" + : "=Q" (*lock) : "m" (*lock) : "cc" ); + return 0; +} +strong_alias (pthread_spin_unlock, pthread_spin_init) diff --git a/sysdeps/s390/nptl/pthreaddef.h b/sysdeps/s390/nptl/pthreaddef.h new file mode 100644 index 0000000000..b2a7c058e6 --- /dev/null +++ b/sysdeps/s390/nptl/pthreaddef.h @@ -0,0 +1,33 @@ +/* Copyright (C) 2003-2014 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 (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. SSE requires 16 + bytes. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) diff --git a/sysdeps/s390/nptl/tcb-offsets.sym b/sysdeps/s390/nptl/tcb-offsets.sym new file mode 100644 index 0000000000..9cfae211e0 --- /dev/null +++ b/sysdeps/s390/nptl/tcb-offsets.sym @@ -0,0 +1,7 @@ +#include <sysdep.h> +#include <tls.h> + +MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads) +STACK_GUARD offsetof (tcbhead_t, stack_guard) +PID offsetof (struct pthread, pid) +TID offsetof (struct pthread, tid) diff --git a/sysdeps/s390/nptl/tls.h b/sysdeps/s390/nptl/tls.h new file mode 100644 index 0000000000..1c74efa847 --- /dev/null +++ b/sysdeps/s390/nptl/tls.h @@ -0,0 +1,204 @@ +/* Definition for thread-local data handling. NPTL/s390 version. + Copyright (C) 2003-2014 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 <stdlib.h> +# include <list.h> +# include <kernel-features.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; + uintptr_t sysinfo; + uintptr_t stack_guard; + int gscope_flag; +#ifndef __ASSUME_PRIVATE_FUTEX + int private_futex; +#endif +} tcbhead_t; + +# ifndef __s390x__ +# define TLS_MULTIPLE_THREADS_IN_TCB 1 +# endif + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif + + +/* Alignment requirement for the stack. For IA-32 this is governed by + the SSE memory functions. */ +#define STACK_ALIGN 16 + +#ifndef __ASSEMBLER__ +/* Get system call information. */ +# include <sysdep.h> + +/* This is the size of the initial TCB. Can't be just sizeof (tcbhead_t), + because NPTL getpid, __libc_alloca_cutoff etc. need (almost) the whole + struct pthread even when not linked with -lpthread. */ +# define TLS_INIT_TCB_SIZE sizeof (struct pthread) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (struct pthread) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct pthread) + +/* 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 +# define TLS_DTV_AT_TP 0 + +/* Get the thread descriptor definition. */ +# include <nptl/descr.h> + + +/* 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 *) __builtin_thread_pointer ())->dtv = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(descr) \ + (((tcbhead_t *) (descr))->dtv) + +#if defined NEED_DL_SYSINFO && defined SHARED +# define INIT_SYSINFO \ + _head->sysinfo = GLRO(dl_sysinfo) +#else +# define INIT_SYSINFO +#endif + +/* 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(thrdescr) \ + ({ void *_thrdescr = (thrdescr); \ + tcbhead_t *_head = _thrdescr; \ + \ + _head->tcb = _thrdescr; \ + /* For now the thread descriptor is at the same address. */ \ + _head->self = _thrdescr; \ + /* New syscall handling support. */ \ + INIT_SYSINFO; \ + \ + __builtin_set_thread_pointer (_thrdescr); \ + NULL; \ + }) + +/* Value passed to 'clone' for initialization of the thread register. */ +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd) + +/* 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 ()) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF REGISTER (32, 32, 18 * 4, 0) \ + REGISTER (64, __WORDSIZE, 18 * 8, 0) + +/* 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) + +/* Set the stack guard field in TCB head. */ +#define THREAD_SET_STACK_GUARD(value) \ + do \ + { \ + __asm __volatile ("" : : : "a0", "a1"); \ + THREAD_SETMEM (THREAD_SELF, header.stack_guard, value); \ + } \ + while (0) +#define THREAD_COPY_STACK_GUARD(descr) \ + ((descr)->header.stack_guard \ + = THREAD_GETMEM (THREAD_SELF, header.stack_guard)) + +/* s390 doesn't have HP_TIMING_*, so for the time being + use stack_guard as pointer_guard. */ +#define THREAD_GET_POINTER_GUARD() \ + THREAD_GETMEM (THREAD_SELF, header.stack_guard) +#define THREAD_SET_POINTER_GUARD(value) +#define THREAD_COPY_POINTER_GUARD(descr) + +/* 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 */ |