source: trunk/kLdr/kLdrMisc.c@ 2996

Last change on this file since 2996 was 2944, checked in by bird, 19 years ago

split up kLdrHlp.c and kLdr.c to make it more flexible (like using the module interpreters without the dynamic loader bit and similar).
  • Property svn:keywords set to Id
File size: 5.1 KB
RevLine 
[2944]1/* $Id: kLdrMisc.c 2944 2007-01-13 15:55:40Z 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 "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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