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Commit	Line	Data
	1	/*
	2	* Copyright (c) 2003-2009 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#include <machine/cpu_capabilities.h>
	30	#include <machine/commpage.h>
	31	#include <machine/asm.h>
	32	#include <assym.s>
	33
	34	/*
	35	* extern void commpage_sched_gen_inc(void);
	36	*/
	37	.text
	38
	39	.globl _commpage_sched_gen_inc
	40	_commpage_sched_gen_inc:
	41	#if defined (__x86_64__)
	42	FRAME
	43
	44	/* Increment 32-bit commpage field if present */
	45	movq _commPagePtr32(%rip),%rdx
	46	testq %rdx,%rdx
	47	je 1f
	48	subq $(ASM_COMM_PAGE32_BASE_ADDRESS),%rdx
	49	lock
	50	incl ASM_COMM_PAGE_SCHED_GEN(%rdx)
	51
	52	/* Increment 64-bit commpage field if present */
	53	movq _commPagePtr64(%rip),%rdx
	54	testq %rdx,%rdx
	55	je 1f
	56	subq $(ASM_COMM_PAGE32_START_ADDRESS),%rdx
	57	lock
	58	incl ASM_COMM_PAGE_SCHED_GEN(%rdx)
	59	1:
	60	EMARF
	61	ret
	62	#elif defined (__i386__)
	63	FRAME
	64
	65	/* Increment 32-bit commpage field if present */
	66	mov _commPagePtr32,%edx
	67	testl %edx,%edx
	68	je 1f
	69	sub $(ASM_COMM_PAGE32_BASE_ADDRESS),%edx
	70	lock
	71	incl ASM_COMM_PAGE_SCHED_GEN(%edx)
	72
	73	/* Increment 64-bit commpage field if present */
	74	mov _commPagePtr64,%edx
	75	testl %edx,%edx
	76	je 1f
	77	sub $(ASM_COMM_PAGE32_START_ADDRESS),%edx
	78	lock
	79	incl ASM_COMM_PAGE_SCHED_GEN(%edx)
	80	1:
	81	EMARF
	82	ret
	83	#else
	84	#error unsupported architecture
	85	#endif
	86
	87	/* pointers to the 32-bit commpage routine descriptors */
	88	/* WARNING: these must be sorted by commpage address! */
	89	.const_data
	90	.align 3
	91	.globl _commpage_32_routines
	92	_commpage_32_routines:
	93	COMMPAGE_DESCRIPTOR_REFERENCE(preempt)
	94	COMMPAGE_DESCRIPTOR_REFERENCE(backoff)
	95	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue)
	96	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue)
	97	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock)
	98	#if defined (__i386__)
	99	.long 0
	100	#elif defined (__x86_64__)
	101	.quad 0
	102	#else
	103	#error unsupported architecture
	104	#endif
	105
	106
	107	/* pointers to the 64-bit commpage routine descriptors */
	108	/* WARNING: these must be sorted by commpage address! */
	109	.const_data
	110	.align 3
	111	.globl _commpage_64_routines
	112	_commpage_64_routines:
	113	COMMPAGE_DESCRIPTOR_REFERENCE(preempt_64)
	114	COMMPAGE_DESCRIPTOR_REFERENCE(backoff_64)
	115	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue_64)
	116	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue_64)
	117	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock_64)
	118	#if defined (__i386__)
	119	.long 0
	120	#elif defined (__x86_64__)
	121	.quad 0
	122	#else
	123	#error unsupported architecture
	124	#endif
	125