source: trunk/kCpu/kCpuCompare.c@ 76

Last change on this file since 76 was 29, checked in by bird, 16 years ago

Finally got around execute the switch to the MIT license.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 4.7 KB
RevLine 
[2]1/* $Id: kCpuCompare.c 29 2009-07-01 20:30:29Z bird $ */
2/** @file
3 * kCpu - kCpuCompare.
4 */
5
6/*
[29]7 * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
[2]8 *
[29]9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
[2]17 *
[29]18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
[2]20 *
[29]21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
[2]29 */
30
31/*******************************************************************************
32* Header Files *
33*******************************************************************************/
34#include <k/kCpu.h>
35#include <k/kErrors.h>
36
37
38/**
39 * Compares arch+cpu some code was generated for with a arch+cpu for executing it
40 * to see if it'll work out fine or not.
41 *
42 * @returns 0 if the code is compatible with the cpu.
43 * @returns KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE if the arch+cpu isn't compatible with the code.
44 *
45 * @param enmCodeArch The architecture the code was generated for.
46 * @param enmCodeCpu The cpu the code was generated for.
47 * @param enmArch The architecture to run it on.
48 * @param enmCpu The cpu to run it on.
49 */
50KCPU_DECL(int) kCpuCompare(KCPUARCH enmCodeArch, KCPU enmCodeCpu, KCPUARCH enmArch, KCPU enmCpu)
51{
52 /*
53 * Compare arch and cpu.
54 */
55 if (enmCodeArch != enmArch)
56 return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
57
58 /* exact match is nice. */
59 if (enmCodeCpu == enmCpu)
60 return 0;
61
62 switch (enmArch)
63 {
64 case K_ARCH_X86_16:
65 if (enmCpu < KCPU_FIRST_X86_16 || enmCpu > KCPU_LAST_X86_16)
66 return KERR_INVALID_PARAMETER;
67
68 /* intel? */
69 if (enmCodeCpu <= KCPU_CORE2_16)
70 {
71 /* also intel? */
72 if (enmCpu <= KCPU_CORE2_16)
73 return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
74 switch (enmCpu)
75 {
76 case KCPU_K6_16:
77 return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
78 case KCPU_K7_16:
79 case KCPU_K8_16:
80 default:
81 return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
82 }
83 }
84 /* amd */
85 return enmCpu >= KCPU_K6_16 && enmCpu <= KCPU_K8_16
86 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
87
88 case K_ARCH_X86_32:
89 if (enmCpu < KCPU_FIRST_X86_32 || enmCpu > KCPU_LAST_X86_32)
90 return KERR_INVALID_PARAMETER;
91
92 /* blend? */
93 if (enmCodeCpu == KCPU_X86_32_BLEND)
94 return 0;
95
96 /* intel? */
97 if (enmCodeCpu <= KCPU_CORE2_32)
98 {
99 /* also intel? */
100 if (enmCpu <= KCPU_CORE2_32)
101 return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
102 switch (enmCpu)
103 {
104 case KCPU_K6:
105 return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
106 case KCPU_K7:
107 case KCPU_K8_32:
108 default:
109 return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
110 }
111 }
112 /* amd */
113 return enmCpu >= KCPU_K6 && enmCpu <= KCPU_K8_32
114 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
115
116 case K_ARCH_AMD64:
117 if (enmCpu < KCPU_FIRST_AMD64 || enmCpu > KCPU_LAST_AMD64)
118 return KERR_INVALID_PARAMETER;
119
120 /* blend? */
121 if (enmCodeCpu == KCPU_AMD64_BLEND)
122 return 0;
123 /* this is simple for now. */
124 return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
125
126 default:
127 break;
128 }
129 return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
130}
131
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