[apple/xnu.git] / osfmk / i386 / commpage / commpage_asm.s

/*
 * Copyright (c) 2003-2009 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@
 */

#include <machine/cpu_capabilities.h>
#include <machine/commpage.h>
#include <machine/asm.h>
#include <assym.s>

/*
 * extern void	commpage_sched_gen_inc(void);
 */
	.text

	.globl	_commpage_sched_gen_inc
_commpage_sched_gen_inc:
#if defined (__x86_64__)
	FRAME
	
	/* Increment 32-bit commpage field if present */
	movq	_commPagePtr32(%rip),%rdx
	testq	%rdx,%rdx
	je	1f
	subq	$(ASM_COMM_PAGE32_BASE_ADDRESS),%rdx
	lock
	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)

	/* Increment 64-bit commpage field if present */
	movq	_commPagePtr64(%rip),%rdx
	testq	%rdx,%rdx
	je	1f
	subq	$(ASM_COMM_PAGE32_START_ADDRESS),%rdx
	lock
	incl	ASM_COMM_PAGE_SCHED_GEN(%rdx)
1:
	EMARF
	ret
#elif defined (__i386__)
	FRAME
	
	/* Increment 32-bit commpage field if present */
	mov	_commPagePtr32,%edx
	testl	%edx,%edx
	je	1f
	sub	$(ASM_COMM_PAGE32_BASE_ADDRESS),%edx
	lock
	incl	ASM_COMM_PAGE_SCHED_GEN(%edx)

	/* Increment 64-bit commpage field if present */
	mov	_commPagePtr64,%edx
	testl	%edx,%edx
	je	1f
	sub	$(ASM_COMM_PAGE32_START_ADDRESS),%edx
	lock
	incl	ASM_COMM_PAGE_SCHED_GEN(%edx)
1:
	EMARF
	ret
#else
#error unsupported architecture
#endif

/* pointers to the 32-bit commpage routine descriptors */
/* WARNING: these must be sorted by commpage address! */
	.const_data
	.align	3
	.globl	_commpage_32_routines
_commpage_32_routines:
	COMMPAGE_DESCRIPTOR_REFERENCE(preempt)
	COMMPAGE_DESCRIPTOR_REFERENCE(backoff)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock)
#if defined (__i386__)
	.long	0
#elif defined (__x86_64__)
	.quad	0
#else
#error unsupported architecture
#endif


/* pointers to the 64-bit commpage routine descriptors */
/* WARNING: these must be sorted by commpage address! */
	.const_data
	.align	3
	.globl	_commpage_64_routines
_commpage_64_routines:
	COMMPAGE_DESCRIPTOR_REFERENCE(preempt_64)
	COMMPAGE_DESCRIPTOR_REFERENCE(backoff_64)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue_64)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue_64)
	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock_64)
#if defined (__i386__)
	.long	0
#elif defined (__x86_64__)
	.quad	0
#else
#error unsupported architecture
#endif
Commit	Line	Data
0c530ab8	1	/*
b0d623f7	2	* Copyright (c) 2003-2009 Apple Inc. All rights reserved.
0c530ab8	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
0c530ab8	5	*
2d21ac55 A	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.
0c530ab8	14	*
2d21ac55 A	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
0c530ab8 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
0c530ab8 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
0c530ab8	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
0c530ab8 A	27	*/
	28
	29	#include <machine/cpu_capabilities.h>
b0d623f7 A	30	#include <machine/commpage.h>
	31	#include <machine/asm.h>
	32	#include <assym.s>
0c530ab8	33
2d21ac55 A	34	/*
	35	* extern void commpage_sched_gen_inc(void);
	36	*/
	37	.text
0c530ab8	38
b0d623f7	39	.globl _commpage_sched_gen_inc
2d21ac55	40	_commpage_sched_gen_inc:
b0d623f7 A	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)
0c530ab8	51
b0d623f7 A	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
2d21ac55 A	65	/* Increment 32-bit commpage field if present */
	66	mov _commPagePtr32,%edx
	67	testl %edx,%edx
0c530ab8	68	je 1f
b0d623f7	69	sub $(ASM_COMM_PAGE32_BASE_ADDRESS),%edx
2d21ac55	70	lock
b0d623f7	71	incl ASM_COMM_PAGE_SCHED_GEN(%edx)
0c530ab8	72
2d21ac55 A	73	/* Increment 64-bit commpage field if present */
	74	mov _commPagePtr64,%edx
	75	testl %edx,%edx
	76	je 1f
b0d623f7	77	sub $(ASM_COMM_PAGE32_START_ADDRESS),%edx
2d21ac55	78	lock
b0d623f7	79	incl ASM_COMM_PAGE_SCHED_GEN(%edx)
0c530ab8	80	1:
b0d623f7	81	EMARF
0c530ab8	82	ret
b0d623f7 A	83	#else
	84	#error unsupported architecture
	85	#endif
0c530ab8 A	86
	87	/* pointers to the 32-bit commpage routine descriptors */
	88	/* WARNING: these must be sorted by commpage address! */
	89	.const_data
b0d623f7	90	.align 3
0c530ab8 A	91	.globl _commpage_32_routines
0c530ab8 A	92	_commpage_32_routines:
b0d623f7	93	COMMPAGE_DESCRIPTOR_REFERENCE(preempt)
b0d623f7	94	COMMPAGE_DESCRIPTOR_REFERENCE(backoff)
b0d623f7 A	95	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_enqueue)
	96	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_dequeue)
	97	COMMPAGE_DESCRIPTOR_REFERENCE(pfz_mutex_lock)
	98	#if defined (__i386__)
0c530ab8	99	.long 0
b0d623f7 A	100	#elif defined (__x86_64__)
	101	.quad 0
	102	#else
	103	#error unsupported architecture
	104	#endif
0c530ab8 A	105
	106
	107	/* pointers to the 64-bit commpage routine descriptors */
	108	/* WARNING: these must be sorted by commpage address! */
	109	.const_data
b0d623f7	110	.align 3
0c530ab8 A	111	.globl _commpage_64_routines
0c530ab8 A	112	_commpage_64_routines:
b0d623f7	113	COMMPAGE_DESCRIPTOR_REFERENCE(preempt_64)
b0d623f7	114	COMMPAGE_DESCRIPTOR_REFERENCE(backoff_64)
b0d623f7 A	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__)
0c530ab8	119	.long 0
b0d623f7 A	120	#elif defined (__x86_64__)
	121	.quad 0
	122	#else
	123	#error unsupported architecture
	124	#endif
0c530ab8	125