cpu.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:6k
源码类别:
Windows CE
开发平台:
C/C++
- /*****************************************************************************
- *
- * This program is free software ; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id: cpu.c 585 2006-01-16 09:48:55Z picard $
- *
- * The Core Pocket Media Player
- * Copyright (c) 2004-2005 Gabor Kovacs
- *
- ****************************************************************************/
- #include "../common.h"
- #include "cpu.h"
- #ifdef ARM
- extern int STDCALL CheckARM5E();
- extern int STDCALL CheckARMXScale();
- #endif
- #ifndef SH3
- extern void STDCALL GetCpuId(int,uint32_t*);
- #if defined(TARGET_SYMBIAN) && !defined(ARM)
- #define GetCpuId(a,b)
- #endif
- static NOINLINE void SafeGetCpuId(int Id, uint32_t* p)
- {
- memset(p,0,4*sizeof(uint32_t));
- TRY_BEGIN
- {
- bool_t Mode = KernelMode(1);
- GetCpuId(Id,p);
- KernelMode(Mode);
- }
- TRY_END
- }
- #endif
- int CPUCaps()
- {
- cpudetect p;
- CPUDetect(&p);
- return p.Caps;
- }
- void CPUDetect(cpudetect* p)
- {
- int Caps = 0;
- uint32_t CpuId[4];
- memset(p,0,sizeof(cpudetect));
- #ifdef ARM
- p->Arch = T("ARM");
- SafeGetCpuId(0,CpuId);
- if (CpuId[0])
- {
- p->ICache = 512 << ((CpuId[1] >> 6) & 7);
- p->DCache = 512 << ((CpuId[1] >> 18) & 7);
- }
- else
- {
- #if !defined(TARGET_PALMOS) && !defined(TARGET_SYMBIAN)
- // when need to detect cpu features somehow
- // (only works if we can catch cpu exceptions)
- TRY_BEGIN
- {
- if (CheckARM5E())
- {
- int XScale;
- Caps |= CAPS_ARM_5E;
- XScale = CheckARMXScale();
- if (XScale)
- {
- p->ICache = p->DCache = 32768;
- Caps |= CAPS_ARM_XSCALE;
- if (XScale > 1)
- Caps |= CAPS_ARM_WMMX;
- }
- }
- }
- TRY_END
- #endif
- }
- if ((CpuId[0] & 0xFF000000) == 0x54000000) //TI
- {
- p->Vendor = T("TI");
- Caps |= CAPS_ARM_GENERAL;
- switch ((CpuId[0] >> 4) & 0xFFF)
- {
- case 0x915: p->Model = T("915T"); break;
- case 0x925: p->Model = T("925T"); break;
- case 0x926: p->Model = T("926T"); Caps |= CAPS_ARM_5E; break;
- }
- }
- else
- if ((CpuId[0] & 0xFF000000) == 0x41000000) //arm
- {
- Caps |= CAPS_ARM_GENERAL;
- switch ((CpuId[0] >> 4) & 0xFFF)
- {
- case 0x920: p->Model = T("920T"); break;
- case 0x922: p->Model = T("922T"); break;
- case 0x926: p->Model = T("926E"); Caps |= CAPS_ARM_5E; break;
- case 0x940: p->Model = T("940T"); break;
- case 0x946: p->Model = T("946E"); Caps |= CAPS_ARM_5E; break;
- case 0xA22: p->Model = T("1020E"); Caps |= CAPS_ARM_5E; break;
- }
- }
- else
- if ((CpuId[0] & 0xFF000000) == 0x69000000) //intel
- {
- p->Vendor = T("Intel");
- if ((CpuId[0] & 0xFF0000) == 0x050000) //intel arm5e
- Caps |= CAPS_ARM_5E|CAPS_ARM_XSCALE;
- if (((CpuId[0] >> 4) & 0xFFF) == 0xB11)
- {
- p->Model = T("SA1110");
- }
- else
- {
- switch ((CpuId[0] >> 13) & 7)
- {
- case 0x2: Caps |= CAPS_ARM_WMMX; break;
- }
- switch ((CpuId[0] >> 4) & 31)
- {
- case 0x10:
- p->Model = T("PXA25x/26x");
- break;
- case 0x11:
- p->Model = T("PXA27x");
- break;
- case 0x12:
- p->Model = T("PXA210");
- break;
- }
- }
- }
- #elif defined(MIPS)
- SafeGetCpuId(0,CpuId);
- p->Arch = T("MIPS");
- if (((CpuId[0] >> 8) & 255) == 0x0c)
- {
- if ((CpuId[0] & 0xF0) == 0x50)
- {
- Caps |= CAPS_MIPS_VR4110;
- p->Model = T("VR411X");
- }
- else
- {
- Caps |= CAPS_MIPS_VR4120;
- if ((CpuId[0] & 0xF0) == 0x80)
- p->Model = T("VR413X");
- else
- p->Model = T("VR412X");
- }
- }
- #elif defined(SH3)
- CpuId[0] = 0; // avoid warning
- Caps = CpuId[0];
- p->Arch = T("SH3");
- #elif defined(_M_IX86)
- p->Arch = T("x86");
- SafeGetCpuId(0,CpuId);
- if (CpuId[1] == 0x756e6547 &&
- CpuId[3] == 0x49656e69 &&
- CpuId[2] == 0x6c65746e)
- {
- p->Vendor = T("Intel");
- Intel:
- SafeGetCpuId(1,CpuId);
- if (CpuId[3] & 0x00800000)
- {
- Caps |= CAPS_X86_MMX;
- if (CpuId[3] & 0x02000000)
- Caps |= CAPS_X86_MMX2 | CAPS_X86_SSE;
- if (CpuId[3] & 0x04000000)
- Caps |= CAPS_X86_SSE2;
- }
- }
- else if (CpuId[1] == 0x68747541 &&
- CpuId[3] == 0x69746e65 &&
- CpuId[2] == 0x444d4163)
- {
- p->Vendor = T("AMD");
- SafeGetCpuId(0x80000000,CpuId);
- if (CpuId[0] < 0x80000001)
- goto Intel;
- SafeGetCpuId(0x80000001,CpuId);
- if (CpuId[3] & 0x00800000)
- {
- Caps |= CAPS_X86_MMX;
- if (CpuId[3] & 0x80000000)
- Caps |= CAPS_X86_3DNOW;
- if (CpuId[3] & 0x00400000)
- Caps |= CAPS_X86_MMX2;
- }
- }
- else if (CpuId[1] == 0x746e6543 &&
- CpuId[3] == 0x48727561 &&
- CpuId[2] == 0x736c7561)
- {
- p->Vendor = T("VIA C3");
- SafeGetCpuId(0x80000000,CpuId);
- if (CpuId[0] < 0x80000001)
- goto Intel;
- SafeGetCpuId(0x80000001,CpuId);
- if (CpuId[3] & (1<<31))
- Caps |= CAPS_X86_3DNOW;
- if (CpuId[3] & (1<<23))
- Caps |= CAPS_X86_MMX;
- if (CpuId[3] & (1<<24))
- Caps |= CAPS_X86_MMX2;
- }
- else if (CpuId[1] == 0x69727943 &&
- CpuId[3] == 0x736e4978 &&
- CpuId[2] == 0x64616574)
- {
- p->Vendor = T("Cyrix");
- if (CpuId[0] != 2)
- goto Intel;
- SafeGetCpuId(0x80000001,CpuId);
- if (CpuId[3] & 0x00800000)
- {
- Caps |= CAPS_X86_MMX;
- if (CpuId[3] & 0x01000000)
- Caps |= CAPS_X86_MMX2;
- }
- }
- #endif
- p->Caps = Caps;
- }