/*
* 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