diff options
Diffstat (limited to 'REORG.TODO/sysdeps/hppa/nptl')
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/Makefile | 20 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/bits/pthreadtypes-arch.h | 89 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/bits/semaphore.h | 31 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/jmpbuf-unwind.h | 30 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/pthread_spin_init.c | 44 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/pthread_spin_unlock.c | 44 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/pthreaddef.h | 33 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/tcb-offsets.sym | 17 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/tls.h | 161 | ||||
-rw-r--r-- | REORG.TODO/sysdeps/hppa/nptl/tst-oddstacklimit.c | 26 |
10 files changed, 495 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/hppa/nptl/Makefile b/REORG.TODO/sysdeps/hppa/nptl/Makefile new file mode 100644 index 0000000000..e9d9181f64 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/Makefile @@ -0,0 +1,20 @@ +# Copyright (C) 2005-2017 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/REORG.TODO/sysdeps/hppa/nptl/bits/pthreadtypes-arch.h b/REORG.TODO/sysdeps/hppa/nptl/bits/pthreadtypes-arch.h new file mode 100644 index 0000000000..7befe5de6d --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/bits/pthreadtypes-arch.h @@ -0,0 +1,89 @@ +/* Copyright (C) 2005-2017 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 _BITS_PTHREADTYPES_ARCH_H +#define _BITS_PTHREADTYPES_ARCH_H 1 + +/* Linuxthread type sizes (bytes): + sizeof(pthread_attr_t) = 0x24 (36) + sizeof(pthread_barrier_t) = 0x30 (48) + sizeof(pthread_barrierattr_t) = 0x4 (4) + sizeof(pthread_cond_t) = 0x30 (48) + sizeof(pthread_condattr_t) = 0x4 (4) + sizeof(pthread_mutex_t) = 0x30 (48) + sizeof(pthread_mutexattr_t) = 0x4 (4) + sizeof(pthread_rwlock_t) = 0x40 (64) + sizeof(pthread_rwlockattr_t) = 0x8 (8) + sizeof(pthread_spinlock_t) = 0x10 (16) */ + +#define __SIZEOF_PTHREAD_ATTR_T 36 +#define __SIZEOF_PTHREAD_MUTEX_T 48 +#define __SIZEOF_PTHREAD_BARRIER_T 48 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCK_T 64 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 + +/* The old 4-word 16-byte aligned lock. This is initalized + to all ones by the Linuxthreads PTHREAD_MUTEX_INITIALIZER. + Unused in NPTL. */ +#define __PTHREAD_COMPAT_PADDING_MID int __compat_padding[4] +/* Two more words are left before the NPTL + pthread_mutex_t is larger than Linuxthreads. */ +#define __PTHREAD_COMPAT_PADDING_END int __reserved[2] +#define __PTHREAD_MUTEX_LOCK_ELISION 0 + +#define __LOCK_ALIGNMENT __attribute__ ((__aligned__(16))) +#define __ONCE_ALIGNMENT + +struct __pthread_rwlock_arch_t +{ + /* In the old Linuxthreads pthread_rwlock_t, this is the + start of the 4-word 16-byte aligned lock structure. The + next four words are all set to 1 by the Linuxthreads + PTHREAD_RWLOCK_INITIALIZER. We ignore them in NPTL. */ + int __compat_padding[4] __attribute__ ((__aligned__(16))); + unsigned int __readers; + unsigned int __writers; + unsigned int __wrphase_futex; + unsigned int __writers_futex; + unsigned int __pad3; + unsigned int __pad4; + int __cur_writer; + /* An unused word, reserved for future use. It was added + to maintain the location of the flags from the Linuxthreads + layout of this structure. */ + int __reserved1; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __pad2; + unsigned char __pad1; + unsigned char __shared; + unsigned char __flags; + /* The NPTL pthread_rwlock_t is 4 words smaller than the + Linuxthreads version. One word is in the middle of the + structure, the other three are at the end. */ + int __reserved2; + int __reserved3; + int __reserved4; +}; + +#define __PTHREAD_RWLOCK_ELISION_EXTRA 0 + +#endif /* bits/pthreadtypes.h */ diff --git a/REORG.TODO/sysdeps/hppa/nptl/bits/semaphore.h b/REORG.TODO/sysdeps/hppa/nptl/bits/semaphore.h new file mode 100644 index 0000000000..060a0627f0 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/bits/semaphore.h @@ -0,0 +1,31 @@ +/* Copyright (C) 2002-2017 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 _SEMAPHORE_H +# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + +#define __SIZEOF_SEM_T 16 + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/REORG.TODO/sysdeps/hppa/nptl/jmpbuf-unwind.h b/REORG.TODO/sysdeps/hppa/nptl/jmpbuf-unwind.h new file mode 100644 index 0000000000..800180384a --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/jmpbuf-unwind.h @@ -0,0 +1,30 @@ +/* Copyright (C) 2003-2017 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 <jmpbuf-offsets.h> +#include <stdint.h> +#include <unwind.h> + +#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)(((unsigned long *) _jmpbuf)[JB_SP]) - (_adj)) + +/* We use the normal longjmp for unwinding. */ +#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) diff --git a/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_init.c b/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_init.c new file mode 100644 index 0000000000..8bbc79e581 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_init.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2006-2017 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 "pthreadP.h" + +int +pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* CONCURRENCTY NOTES: + + The atomic_exchange_rel synchronizes-with the atomic_exhange_acq in + pthread_spin_lock. + + On hppa we must not use a plain `stw` to reset the guard lock. This + has to do with the kernel compare-and-swap helper that is used to + implement all of the atomic operations. + + The kernel CAS helper uses its own internal locks and that means that + to create a true happens-before relationship between any two threads, + the second thread must observe the internal lock having a value of 0 + (it must attempt to take the lock with ldcw). This creates the + ordering required for a second thread to observe the effects of the + RMW of the kernel CAS helper in any other thread. + + Therefore if a variable is used in an atomic macro it must always be + manipulated with atomic macros in order for memory ordering rules to + be preserved. */ + atomic_exchange_rel (lock, 0); + return 0; +} diff --git a/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_unlock.c b/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_unlock.c new file mode 100644 index 0000000000..7883568bc6 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/pthread_spin_unlock.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2005-2017 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 "pthreadP.h" + +int +pthread_spin_unlock (pthread_spinlock_t *lock) +{ + /* CONCURRENCTY NOTES: + + The atomic_exchange_rel synchronizes-with the atomic_exhange_acq in + pthread_spin_lock. + + On hppa we must not use a plain `stw` to reset the guard lock. This + has to do with the kernel compare-and-swap helper that is used to + implement all of the atomic operations. + + The kernel CAS helper uses its own internal locks and that means that + to create a true happens-before relationship between any two threads, + the second thread must observe the internal lock having a value of 0 + (it must attempt to take the lock with ldcw). This creates the + ordering required for a second thread to observe the effects of the + RMW of the kernel CAS helper in any other thread. + + Therefore if a variable is used in an atomic macro it must always be + manipulated with atomic macros in order for memory ordering rules to + be preserved. */ + atomic_exchange_rel (lock, 0); + return 0; +} diff --git a/REORG.TODO/sysdeps/hppa/nptl/pthreaddef.h b/REORG.TODO/sysdeps/hppa/nptl/pthreaddef.h new file mode 100644 index 0000000000..77343dd42b --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/pthreaddef.h @@ -0,0 +1,33 @@ +/* Copyright (C) 2002-2017 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 (8 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 64 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB, note that this must be larger than STACK_ALIGN */ +#define TCB_ALIGNMENT STACK_ALIGN + + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("%r30"); diff --git a/REORG.TODO/sysdeps/hppa/nptl/tcb-offsets.sym b/REORG.TODO/sysdeps/hppa/nptl/tcb-offsets.sym new file mode 100644 index 0000000000..6e852f35b1 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/tcb-offsets.sym @@ -0,0 +1,17 @@ +#include <pthread.h> +#include <tls.h> + +RESULT offsetof (struct pthread, result) +TID offsetof (struct pthread, tid) +CANCELHANDLING offsetof (struct pthread, cancelhandling) +CLEANUP_JMP_BUF offsetof (struct pthread, cleanup_jmp_buf) +MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +TLS_PRE_TCB_SIZE sizeof (struct pthread) +MUTEX_FUTEX offsetof (pthread_mutex_t, __data.__lock) + +-- Use a thread_offset when working with asm to make things simpler +-- This way we get the offset of a member in the struct pthread that +-- preceeds the thread pointer (which points to the dtv). +#define thread_offsetof(mem) (unsigned int)(offsetof(struct pthread, mem) - sizeof(struct pthread)) +TID_THREAD_OFFSET thread_offsetof (tid) +MULTIPLE_THREADS_THREAD_OFFSET thread_offsetof (header.multiple_threads) diff --git a/REORG.TODO/sysdeps/hppa/nptl/tls.h b/REORG.TODO/sysdeps/hppa/nptl/tls.h new file mode 100644 index 0000000000..d983e10758 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/tls.h @@ -0,0 +1,161 @@ +/* Definition for thread-local data handling. NPTL/hppa version. + Copyright (C) 2005-2017 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 <dl-dtv.h> + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif /* __ASSEMBLER__ */ + +#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 +# define TLS_TCB_AT_TP 0 + +/* 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 __alignof__ (tcbhead_t) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size we need before TCB */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* 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) \ + ({ tcbhead_t *__tcbp = (tcbhead_t *)__get_cr27(); \ + __tcbp->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) \ + ({ __set_cr27(tcbp); NULL; }) + +/* Value passed to 'clone' for initialization of the thread register. */ +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd) + 1 + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + ({ tcbhead_t *__tcbp = (tcbhead_t *)__get_cr27(); \ + __tcbp->dtv; \ + }) + +/* Return the thread descriptor for the current thread. */ +# define THREAD_SELF \ + ({ struct pthread *__self; \ + __self = __get_cr27(); \ + __self - 1; \ + }) + +/* Magic for libthread_db to know how to do THREAD_SELF. + Our thread pointer is stored in cr27. See asm/elf.h for the offset into + elf_gregset_t. The thread descriptor is sizeof (struct pthread) away. */ +# define DB_THREAD_SELF \ + REGISTER (32, 32, 53 * 4, -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) + +static inline struct pthread *__get_cr27(void) +{ + long cr27; + asm ("mfctl %%cr27, %0" : "=r" (cr27) : ); + return (struct pthread *) cr27; +} + +/* We write to cr27, clobber r26 as the input argument, and clobber + r31 as the link register. */ +static inline void __set_cr27(struct pthread *cr27) +{ + asm ( "ble 0xe0(%%sr2, %%r0)\n\t" + "copy %0, %%r26" + : : "r" (cr27) : "r26", "r31" ); +} + +/* 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 */ diff --git a/REORG.TODO/sysdeps/hppa/nptl/tst-oddstacklimit.c b/REORG.TODO/sysdeps/hppa/nptl/tst-oddstacklimit.c new file mode 100644 index 0000000000..5b878c8b00 --- /dev/null +++ b/REORG.TODO/sysdeps/hppa/nptl/tst-oddstacklimit.c @@ -0,0 +1,26 @@ +/* Test NPTL with stack limit that is not a multiple of the page size. + HPPA version. + Copyright (C) 2012-2017 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/>. */ + +/* This sets the stack resource limit to 8193kb, which is not a multiple + of the page size, and therefore an odd sized stack limit. We override + this because the default is too small to run with. */ + +#define ODD_STACK_LIMIT (8193 * 1024) + +#include <sysdeps/../nptl/tst-oddstacklimit.c> |