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/* $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;
}
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