1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
//++
// Copyright (c) 2004, Intel Corporation
// All rights reserved. This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
// which accompanies this distribution. The full text of the license may be found at
// http://opensource.org/licenses/bsd-license.php
//
// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
// Module Name:
//
// IpfCpuCache.s
//
// Abstract:
//
// Contains Misc assembly procedures to support IPF CPU AP.
//
// Revision History:
//
//--
.file "IpfCpuCache.s"
#include "IpfMacro.i"
#include "IpfDefines.h"
//-----------------------------------------------------------------------------
//++
// Flush Cache
//
// Arguments :
// Input = in0 = Starting Address to Flush.
// Input = in1 = Length in bytes.
// Input = b0 = return branch register.
// On Entry :
//
// Return Value:
//
// VOID
// SalFlushCache (
// IN UINT64 BaseToFlush,
// IN UINT64 LengthToFlush
// );
//
//--
//---------------------------------------------------------------------------
PROCEDURE_ENTRY (SalFlushCache)
NESTED_SETUP (5,8,0,0)
mov loc2 = ar.lc
mov loc3 = in0 // Start address.
mov loc4 = in1;; // Length in bytes.
cmp.eq p6,p7 = loc4, r0;; // If Length is zero then don't flush any cache
(p6) br.spnt.many DoneFlushingC;;
add loc4 = loc4,loc3
mov loc5 = 1;;
sub loc4 = loc4, loc5 ;; // the End address to flush
dep loc3 = r0,loc3,0,5
dep loc4 = r0,loc4,0,5;;
shr loc3 = loc3,5
shr loc4 = loc4,5;; // 32 byte cache line
sub loc4 = loc4,loc3;; // total flush count, It should be add 1 but
// the br.cloop will first execute one time
mov loc3 = in0
mov loc5 = 32
mov ar.lc = loc4;;
StillFlushingC:
fc loc3;;
sync.i;;
srlz.i;;
add loc3 = loc5,loc3;;
br.cloop.sptk.few StillFlushingC;;
DoneFlushingC:
mov ar.lc = loc2
NESTED_RETURN
PROCEDURE_EXIT (SalFlushCache)
|
