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Diffstat (limited to 'src/lib/kStuff/kCpu/kCpuCompare.c')
| -rw-r--r-- | src/lib/kStuff/kCpu/kCpuCompare.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/lib/kStuff/kCpu/kCpuCompare.c b/src/lib/kStuff/kCpu/kCpuCompare.c new file mode 100644 index 0000000..0d351a0 --- /dev/null +++ b/src/lib/kStuff/kCpu/kCpuCompare.c @@ -0,0 +1,131 @@ +/* $Id: kCpuCompare.c 29 2009-07-01 20:30:29Z bird $ */ +/** @file + * kCpu - kCpuCompare. + */ + +/* + * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net> + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +/******************************************************************************* +* Header Files * +*******************************************************************************/ +#include <k/kCpu.h> +#include <k/kErrors.h> + + +/** + * Compares arch+cpu some code was generated for with a arch+cpu for executing it + * to see if it'll work out fine or not. + * + * @returns 0 if the code is compatible with the cpu. + * @returns KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE if the arch+cpu isn't compatible with the code. + * + * @param enmCodeArch The architecture the code was generated for. + * @param enmCodeCpu The cpu the code was generated for. + * @param enmArch The architecture to run it on. + * @param enmCpu The cpu to run it on. + */ +KCPU_DECL(int) kCpuCompare(KCPUARCH enmCodeArch, KCPU enmCodeCpu, KCPUARCH enmArch, KCPU enmCpu) +{ + /* + * Compare arch and cpu. + */ + if (enmCodeArch != enmArch) + return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + + /* exact match is nice. */ + if (enmCodeCpu == enmCpu) + return 0; + + switch (enmArch) + { + case K_ARCH_X86_16: + if (enmCpu < KCPU_FIRST_X86_16 || enmCpu > KCPU_LAST_X86_16) + return KERR_INVALID_PARAMETER; + + /* intel? */ + if (enmCodeCpu <= KCPU_CORE2_16) + { + /* also intel? */ + if (enmCpu <= KCPU_CORE2_16) + return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + switch (enmCpu) + { + case KCPU_K6_16: + return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + case KCPU_K7_16: + case KCPU_K8_16: + default: + return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + } + } + /* amd */ + return enmCpu >= KCPU_K6_16 && enmCpu <= KCPU_K8_16 + ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + + case K_ARCH_X86_32: + if (enmCpu < KCPU_FIRST_X86_32 || enmCpu > KCPU_LAST_X86_32) + return KERR_INVALID_PARAMETER; + + /* blend? */ + if (enmCodeCpu == KCPU_X86_32_BLEND) + return 0; + + /* intel? */ + if (enmCodeCpu <= KCPU_CORE2_32) + { + /* also intel? */ + if (enmCpu <= KCPU_CORE2_32) + return enmCodeCpu <= enmCpu ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + switch (enmCpu) + { + case KCPU_K6: + return enmCodeCpu <= KCPU_I586 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + case KCPU_K7: + case KCPU_K8_32: + default: + return enmCodeCpu <= KCPU_I686 ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + } + } + /* amd */ + return enmCpu >= KCPU_K6 && enmCpu <= KCPU_K8_32 + ? 0 : KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + + case K_ARCH_AMD64: + if (enmCpu < KCPU_FIRST_AMD64 || enmCpu > KCPU_LAST_AMD64) + return KERR_INVALID_PARAMETER; + + /* blend? */ + if (enmCodeCpu == KCPU_AMD64_BLEND) + return 0; + /* this is simple for now. */ + return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; + + default: + break; + } + return KCPU_ERR_ARCH_CPU_NOT_COMPATIBLE; +} + |