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/* Project:     OSLib
 * Description: The OS Construction Kit
 * Date:                1.6.2000
 * Idea by:             Luca Abeni & Gerardo Lamastra
 *
 * OSLib is an SO project aimed at developing a common, easy-to-use
 * low-level infrastructure for developing OS kernels and Embedded
 * Applications; it partially derives from the HARTIK project but it
 * currently is independently developed.
 *
 * OSLib is distributed under GPL License, and some of its code has
 * been derived from the Linux kernel source; also some important
 * ideas come from studying the DJGPP go32 extender.
 *
 * We acknowledge the Linux Community, Free Software Foundation,
 * D.J. Delorie and all the other developers who believe in the
 * freedom of software and ideas.
 *
 * For legalese, check out the included GPL license.
 */

/*      CPU detection code      */

#include <ll/i386/hw-data.h>
#include <ll/i386/hw-arch.h>
#include <ll/i386/mem.h>

FILE(Cpu - C);

INLINE_OP void cpuid(DWORD a, DWORD * outa, DWORD * outb, DWORD * outc,
                     DWORD * outd)
{
#ifdef __OLD_GNU__
    __asm__ __volatile__(".byte 0x0F,0xA2"
#else
    __asm__ __volatile__("cpuid"
#endif
                         :"=a"(*outa),
                         "=b"(*outb), "=c"(*outc), "=d"(*outd):"a"(a));
}

void X86_get_CPU(struct ll_cpuInfo *p)
{
    DWORD tmp;

    memset(p, 0, sizeof(struct ll_cpuInfo));
    if (X86_is386()) {
        p->X86_cpu = 3;

        return;
    }
    if (X86_hasCPUID()) {
        p->X86_cpuIdFlag = 1;
        p->X86_cpu = 5;
        cpuid(0, &tmp, &(p->X86_vendor_1),
              &(p->X86_vendor_3), &(p->X86_vendor_2));
        if (tmp >= 1) {
            cpuid(1, &(p->X86_signature),
                  &(p->X86_IntelFeature_1),
                  &(p->X86_IntelFeature_2), &(p->X86_StandardFeature));
        }
    } else {
        p->X86_cpu = 4;
        if (X86_isCyrix()) {
            /* Err... Adjust IT!!!! */
            p->X86_cpu = 11;
        }
        /* Need tests for AMD and others... */
    }
}