source: trunk/kStuff/kLdr/kLdrMisc.c@ 3570

Last change on this file since 3570 was 3570, checked in by bird, 18 years ago

Moving kLdr.h.
  • Property svn:keywords set to Id
File size: 5.1 KB
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1/* $Id: kLdrMisc.c 3570 2007-08-31 02:27:16Z bird $ */
2/** @file
3 *
4 * kLdr - The Dynamic Loader, Misc APIs.
5 *
6 * Copyright (c) 2006-2007 knut st. osmundsen <bird@anduin.net>
7 *
8 *
9 * This file is part of kLdr.
10 *
11 * kLdr is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * kLdr is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with kLdr; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 */
26
27
28/*******************************************************************************
29* Header Files *
30*******************************************************************************/
31#include <k/kLdr.h>
32#include "kLdrHlp.h"
33#include "kLdrInternal.h"
34
35
36/**
37 * Compares arch+cpu some code was generated for with a arch+cpu for executing it
38 * to see if it'll work out fine or not.
39 *
40 * @returns 0 if the code is compatible with the cpu.
41 * @returns KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE if the arch+cpu isn't compatible with the code.
42 * @param enmCodeArch The architecture the code was generated for.
43 * @param enmCodeCpu The cpu the code was generated for.
44 * @param enmArch The architecture to run it on.
45 * @param enmCpu The cpu to run it on.
46 */
47int kLdrCompareCpus(KLDRARCH enmCodeArch, KLDRCPU enmCodeCpu, KLDRARCH enmArch, KLDRCPU enmCpu)
48{
49 /*
50 * Compare arch and cpu.
51 */
52 if (enmCodeArch != enmArch)
53 return KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
54
55 /* exact match is nice. */
56 if (enmCodeCpu == enmCpu)
57 return 0;
58 switch (enmArch)
59 {
60 case KLDRARCH_X86_16:
61 if (enmCpu < KLDRCPU_FIRST_X86_16 || enmCpu > KLDRCPU_LAST_X86_16)
62 return KLDR_ERR_INVALID_PARAMETER;
63
64 /* intel? */
65 if (enmCodeCpu <= KLDRCPU_CORE2_16)
66 {
67 /* also intel? */
68 if (enmCpu <= KLDRCPU_CORE2_16)
69 return enmCodeCpu <= enmCpu ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
70 switch (enmCpu)
71 {
72 case KLDRCPU_K6_16:
73 return enmCodeCpu <= KLDRCPU_I586 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
74 case KLDRCPU_K7_16:
75 case KLDRCPU_K8_16:
76 default:
77 return enmCodeCpu <= KLDRCPU_I686 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
78 }
79 }
80 /* amd */
81 return enmCpu >= KLDRCPU_K6_16 && enmCpu <= KLDRCPU_K8_16
82 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
83
84 case KLDRARCH_X86_32:
85 if (enmCpu < KLDRCPU_FIRST_X86_32 || enmCpu > KLDRCPU_LAST_X86_32)
86 return KLDR_ERR_INVALID_PARAMETER;
87
88 /* blend? */
89 if (enmCodeCpu == KLDRCPU_X86_32_BLEND)
90 return 0;
91
92 /* intel? */
93 if (enmCodeCpu <= KLDRCPU_CORE2_32)
94 {
95 /* also intel? */
96 if (enmCpu <= KLDRCPU_CORE2_32)
97 return enmCodeCpu <= enmCpu ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
98 switch (enmCpu)
99 {
100 case KLDRCPU_K6:
101 return enmCodeCpu <= KLDRCPU_I586 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
102 case KLDRCPU_K7:
103 case KLDRCPU_K8_32:
104 default:
105 return enmCodeCpu <= KLDRCPU_I686 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
106 }
107 }
108 /* amd */
109 return enmCpu >= KLDRCPU_K6 && enmCpu <= KLDRCPU_K8_32
110 ? 0 : KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
111
112 case KLDRARCH_AMD64:
113 if (enmCpu < KLDRCPU_FIRST_AMD64 || enmCpu > KLDRCPU_LAST_AMD64)
114 return KLDR_ERR_INVALID_PARAMETER;
115
116 /* blend? */
117 if (enmCodeCpu == KLDRCPU_AMD64_BLEND)
118 return 0;
119 /* this is simple for now. */
120 return KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
121
122 default:
123 break;
124 }
125 return KLDR_ERR_ARCH_CPU_NOT_COMPATIBLE;
126}
127
128
129/**
130 * Gets the arch+cpu of the calling cpu.
131 *
132 * @param penmArch Where to store the cpu architecture.
133 * @param penmCpu Where to store the cpu brand/model.
134 */
135void kLdrGetArchCpu(PKLDRARCH penmArch, PKLDRCPU penmCpu)
136{
137#ifdef __AMD64__
138 *penmArch = KLDRARCH_AMD64;
139 *penmCpu = KLDRCPU_AMD64_BLEND; /** @todo check it using cpu. */
140
141#elif defined(__X86__)
142 *penmArch = KLDRARCH_X86_32;
143 *penmCpu = KLDRCPU_X86_32_BLEND; /** @todo check it using cpu. */
144
145#else
146# error "Port me"
147#endif
148}
149
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