--- /dev/null
+/*
+ * Copyright (c) 2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * @OSF_COPYRIGHT@
+ */
+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+#ifdef KERNEL_PRIVATE
+
+#ifndef _ARM_SIMPLE_LOCK_TYPES_H_
+#define _ARM_SIMPLE_LOCK_TYPES_H_
+
+#ifdef KERNEL_PRIVATE
+#include <mach/boolean.h>
+#include <kern/kern_types.h>
+
+#include <sys/appleapiopts.h>
+#ifdef MACH_KERNEL_PRIVATE
+#include <arm/hw_lock_types.h>
+#include <arm/locks.h>
+#include <mach_ldebug.h>
+#endif
+
+#ifdef MACH_KERNEL_PRIVATE
+
+typedef uint32_t hw_lock_bit_t;
+
+extern void hw_lock_bit(
+ hw_lock_bit_t *,
+ unsigned int);
+
+extern void hw_unlock_bit(
+ hw_lock_bit_t *,
+ unsigned int);
+
+extern unsigned int hw_lock_bit_try(
+ hw_lock_bit_t *,
+ unsigned int);
+
+extern unsigned int hw_lock_bit_to(
+ hw_lock_bit_t *,
+ unsigned int,
+ uint32_t);
+
+#define hw_lock_bit_held(l,b) (((*(l))&(1<<b))!=0)
+
+
+extern uint32_t LockTimeOut; /* Number of hardware ticks of a lock timeout */
+extern uint32_t LockTimeOutUsec; /* Number of microseconds for lock timeout */
+
+/*
+ * USLOCK_DEBUG is broken on ARM and has been disabled.
+ * There are no callers to any of the usld_lock functions and data structures
+ * don't match between between usimple_lock_data_t and lck_spin_t
+*/
+
+/*
+#if MACH_LDEBUG
+#define USLOCK_DEBUG 1
+#else
+#define USLOCK_DEBUG 0
+#endif
+*/
+
+#if !USLOCK_DEBUG
+
+typedef lck_spin_t usimple_lock_data_t, *usimple_lock_t;
+
+#else
+
+typedef struct uslock_debug {
+ void *lock_pc; /* pc where lock operation began */
+ void *lock_thread; /* thread that acquired lock */
+ unsigned long duration[2];
+ unsigned short state;
+ unsigned char lock_cpu;
+ void *unlock_thread; /* last thread to release lock */
+ unsigned char unlock_cpu;
+ void *unlock_pc; /* pc where lock operation ended */
+} uslock_debug;
+
+typedef struct {
+ hw_lock_data_t interlock; /* must be first... see lock.c */
+ unsigned short lock_type; /* must be second... see lock.c */
+#define USLOCK_TAG 0x5353
+ uslock_debug debug;
+} usimple_lock_data_t, *usimple_lock_t;
+
+#endif /* USLOCK_DEBUG */
+
+#else
+
+#if defined(__arm__)
+typedef struct slock {
+ unsigned int lock_data[10];
+} usimple_lock_data_t, *usimple_lock_t;
+#elif defined(__arm64__)
+/*
+ * ARM64_TODO: this is quite a waste of space (and a
+ * poorly packed data structure). See if anyone's
+ * using these outside of osfmk.
+ * NOTE: only osfmk uses this structure in xnu-2624
+ */
+typedef struct slock {
+ uint64_t lock_data[9];
+} usimple_lock_data_t, *usimple_lock_t;
+#else
+#error Unknown architecture.
+#endif
+
+#endif /* MACH_KERNEL_PRIVATE */
+
+#define USIMPLE_LOCK_NULL ((usimple_lock_t) 0)
+
+#if !defined(decl_simple_lock_data)
+
+typedef usimple_lock_data_t *simple_lock_t;
+typedef usimple_lock_data_t simple_lock_data_t;
+
+#define decl_simple_lock_data(class,name) \
+ class simple_lock_data_t name;
+
+#endif /* !defined(decl_simple_lock_data) */
+
+#ifdef MACH_KERNEL_PRIVATE
+
+#define MACHINE_SIMPLE_LOCK
+
+extern void arm_usimple_lock_init(simple_lock_t, __unused unsigned short);
+
+#define simple_lock_init(l,t) arm_usimple_lock_init(l,t)
+#define simple_lock(l) lck_spin_lock(l)
+#define simple_unlock(l) lck_spin_unlock(l)
+#define simple_lock_try(l) lck_spin_try_lock(l)
+#define simple_lock_try_lock_loop(l) simple_lock(l)
+#define simple_lock_addr(l) (&(l))
+#define simple_lock_assert(l,t) lck_spin_assert(l,t)
+#define kdp_simple_lock_is_acquired(l) kdp_lck_spin_is_acquired(l)
+
+#endif /* MACH_KERNEL_PRIVATE */
+#endif /* KERNEL_PRIVATE */
+
+#endif /* !_ARM_SIMPLE_LOCK_TYPES_H_ */
+
+#endif /* KERNEL_PRIVATE */
projects / apple / xnu.git / blobdiff