proc64_support.s revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2008, Intel Corporation
* All rights reserved.
*/
/*
* Assembler support routines to getcpuid information used to set
* cache size information. Cache information used by memset, strcpy, etc..
*/
#pragma ident "%Z%%M% %I% %E% SMI"
.file "%M%"
#include <sys/asm_linkage.h>
#include "proc64_id.h"
.global .memops_method
/*
* Defaults for Core 2 Duo
*/
.data
.balign 8
.memops_method:
.int NO_SSE
/*
* Get cpuid data.
* (void)__libc_get_cpuid(int cpuid_function, void *out_reg, int cache_index )
*/
.text
ENTRY(__libc_get_cpuid)
# rdi = cpuid function, rsi = out_reg addr, rdx = cache index(fn 4)
push %rbx
mov %edx,%ecx
mov %edi,%eax
cpuid
mov %eax,(%rsi)
mov %ebx,0x4(%rsi)
mov %ecx,0x8(%rsi)
mov %edx,0xc(%rsi)
pop %rbx
ret
SET_SIZE(__libc_get_cpuid)
/*
* Set memops SSE level to use.
* void __intel_set_memops_method(long sse_level);
*/
ENTRY(__intel_set_memops_method)
mov %edi,.memops_method(%rip)
ret
SET_SIZE(__intel_set_memops_method)
/*
* Set cache info global variables used by various libc primitives.
* __intel_set_cache_sizes(long l1_cache_size, long l2_cache_size, long largest_level_cache);
*/
ENTRY(__intel_set_cache_sizes)
# rdi = l1_cache_size, rsi = l2_cache_size, rdx = largest_level_cache
mov %rdi,.amd64cache1(%rip)
shr $1, %rdi
mov %rdi,.amd64cache1half(%rip)
mov %rsi,.amd64cache2(%rip)
shr $1, %rsi
mov %rsi,.amd64cache2half(%rip)
mov %rdx,.largest_level_cache_size(%rip)
ret
SET_SIZE(__intel_set_cache_sizes)