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/* cpuModel.h
*
* This file contains declaration for variables and code
* that may be used to get the Intel Cpu identification
* that has been performed by checkCPUtypeSetCr0 function.
*
* COPYRIGHT (c) 1998 valette@crf.canon.fr
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#ifndef libcpu_cpuModel_h
#define libcpu_cpuModel_h
/*
* Tell us the machine setup..
*/
extern char hard_math; /* floating point coprocessor present indicator */
extern char x86; /* type of cpu (3 = 386, 4 =486, ...) */
extern char x86_model;
extern char x86_mask;
extern int x86_capability; /* cpuid:EDX */
extern int x86_capability_x; /* cpuid:ECX */
extern int x86_capability_ebx; /* cpuid:EBX */
extern int x86_capability_cores; /* cpuid.(EAX=4, ECX=0) - physical cores */
extern char x86_vendor_id[13];
extern int have_cpuid;
extern unsigned char Cx86_step; /* cyrix processor identification */
extern void printCpuInfo(); /* Display this information on console in ascii form */
/* determine if the CPU has a TSC */
#define x86_has_tsc() \
(x86_capability & (1 << 4))
static inline unsigned long long
rdtsc(void)
{
/* Return the value of the on-chip cycle counter. */
unsigned long long result;
__asm__ volatile(".byte 0x0F, 0x31" : "=A" (result));
return result;
} /* rdtsc */
#endif
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