| 1 | /* $Id: kCpuCompare.c 3598 2007-10-04 18:46:12Z bird $ */
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| 2 | /** @file
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| 3 | * kCpu - kCpuCompare.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
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| 8 | *
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| 9 | * This file is part of kStuff.
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| 10 | *
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| 11 | * kStuff is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU Lesser General Public
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| 13 | * License as published by the Free Software Foundation; either
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| 14 | * version 2.1 of the License, or (at your option) any later version.
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| 15 | *
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| 16 | * kStuff is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 19 | * Lesser General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU Lesser General Public
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| 22 | * License along with kStuff; if not, write to the Free Software
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| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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| 24 | *
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| 25 | */
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| 26 |
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| 27 | /*******************************************************************************
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| 28 | * Header Files *
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| 29 | *******************************************************************************/
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| 30 | #include <k/kCpu.h>
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| 31 | #include <k/kErrors.h>
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| 32 |
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| 33 |
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| 34 | /**
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| 35 | * Compares arch+cpu some code was generated for with a arch+cpu for executing it
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| 36 | * to see if it'll work out fine or not.
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| 37 | *
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| 38 | * @returns 0 if the code is compatible with the cpu.
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| 39 | * @returns KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE if the arch+cpu isn't compatible with the code.
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| 40 | *
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| 41 | * @param enmCodeArch The architecture the code was generated for.
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| 42 | * @param enmCodeCpu The cpu the code was generated for.
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| 43 | * @param enmArch The architecture to run it on.
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| 44 | * @param enmCpu The cpu to run it on.
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| 45 | */
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| 46 | KCPU_DECL(int) kCpuCompare(KCPUARCH enmCodeArch, KCPU enmCodeCpu, KCPUARCH enmArch, KCPU enmCpu)
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| 47 | {
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| 48 | /*
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| 49 | * Compare arch and cpu.
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| 50 | */
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| 51 | if (enmCodeArch != enmArch)
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| 52 | return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 53 |
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| 54 | /* exact match is nice. */
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| 55 | if (enmCodeCpu == enmCpu)
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| 56 | return 0;
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| 57 |
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| 58 | switch (enmArch)
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| 59 | {
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| 60 | case K_ARCH_X86_16:
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| 61 | if (enmCpu < KCPU_FIRST_X86_16 || enmCpu > KCPU_LAST_X86_16)
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| 62 | return KERR_INVALID_PARAMETER;
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| 63 |
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| 64 | /* intel? */
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| 65 | if (enmCodeCpu <= KCPU_CORE2_16)
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| 66 | {
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| 67 | /* also intel? */
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| 68 | if (enmCpu <= KCPU_CORE2_16)
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| 69 | return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 70 | switch (enmCpu)
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| 71 | {
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| 72 | case KCPU_K6_16:
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| 73 | return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 74 | case KCPU_K7_16:
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| 75 | case KCPU_K8_16:
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| 76 | default:
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| 77 | return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 78 | }
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| 79 | }
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| 80 | /* amd */
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| 81 | return enmCpu >= KCPU_K6_16 && enmCpu <= KCPU_K8_16
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| 82 | ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 83 |
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| 84 | case K_ARCH_X86_32:
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| 85 | if (enmCpu < KCPU_FIRST_X86_32 || enmCpu > KCPU_LAST_X86_32)
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| 86 | return KERR_INVALID_PARAMETER;
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| 87 |
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| 88 | /* blend? */
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| 89 | if (enmCodeCpu == KCPU_X86_32_BLEND)
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| 90 | return 0;
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| 91 |
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| 92 | /* intel? */
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| 93 | if (enmCodeCpu <= KCPU_CORE2_32)
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| 94 | {
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| 95 | /* also intel? */
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| 96 | if (enmCpu <= KCPU_CORE2_32)
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| 97 | return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 98 | switch (enmCpu)
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| 99 | {
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| 100 | case KCPU_K6:
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| 101 | return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 102 | case KCPU_K7:
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| 103 | case KCPU_K8_32:
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| 104 | default:
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| 105 | return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 106 | }
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| 107 | }
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| 108 | /* amd */
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| 109 | return enmCpu >= KCPU_K6 && enmCpu <= KCPU_K8_32
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| 110 | ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 111 |
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| 112 | case K_ARCH_AMD64:
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| 113 | if (enmCpu < KCPU_FIRST_AMD64 || enmCpu > KCPU_LAST_AMD64)
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| 114 | return KERR_INVALID_PARAMETER;
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| 115 |
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| 116 | /* blend? */
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| 117 | if (enmCodeCpu == KCPU_AMD64_BLEND)
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| 118 | return 0;
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| 119 | /* this is simple for now. */
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| 120 | return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 121 |
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| 122 | default:
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| 123 | break;
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| 124 | }
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| 125 | return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE;
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| 126 | }
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| 127 |
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