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Start support for second level

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Dr-Noob
2018-03-24 18:18:31 +01:00
parent bb0fde5c8b
commit 2a81e344e6
3 changed files with 422 additions and 0 deletions
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394
02h.c Normal file
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#include <stdlib.h>
#include <stdio.h>
#include "02h.h"
#define MASK1 0xFF;
#define MASK2 0xFF00;
#define MASK3 0xFF0000;
#define MASK4 0xFF000000;
#define INVALID -1
struct cache {
int L1d;
int L1i;
int L2;
int L3;
};
struct TLB {
int TLBd;
int TLBi;
};
//http://www.sandpile.org/x86/cpuid.htm
//http://www.hugi.scene.org/online/coding/hugi%2016%20-%20corawhd4.htm
/*** EXEC CPUID INSTRUCTION ***/
static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
{
asm volatile("cpuid"
: "=a" (*eax),
"=b" (*ebx),
"=c" (*ecx),
"=d" (*edx)
: "0" (*eax), "2" (*ecx));
}
/*** ACCORDING TO CPUID TABLE ***/
//TO BE IMPLEMENTED
void fillWithDescriptor(unsigned int desc, struct level2* data) {
if(desc == 0x1)
{
data->tlb->TLBi = 4096;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x3)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x5)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x6)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x8)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0xA)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0xC)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0xD)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x21)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x22)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x23)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x25)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x29)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2C)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x30)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x39)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x3A)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x3C)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x3D)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x3E)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x40)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x41)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x42)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x43)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x44)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x45)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x46)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x47)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x48)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x49)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4A)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4B)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4C)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4D)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4E)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x4E)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else if (desc == 0x2)
{
data->tlb->TLBi = 4194304;
}
else
{
printf("ERROR: Invalid descriptor(0x%x)\n",desc);
}
}
void fillData(unsigned int descriptors[16], struct level2* data) {
//Initialize structures
data->cache->L1d = INVALID;
data->cache->L1i = INVALID;
data->cache->L2 = INVALID;
data->cache->L3 = INVALID;
data->tlb->TLBd = INVALID;
data->tlb->TLBi = INVALID;
//Fill data for each descriptor
for(int i=0;i<16;i++) {
if(descriptors[i] != 0x0)
fillWithDescriptor(descriptors[i],data);
}
}
struct level2* fillLevel2(struct level2* data) {
data = malloc(sizeof(struct level2));
data->cache = malloc(sizeof(struct cache));
data->tlb = malloc(sizeof(struct TLB));
unsigned eax, ebx, ecx, edx;
eax = 2;
native_cpuid(&eax, &ebx, &ecx, &edx);
unsigned int desc[16];
/***
Aplying MASK to register will give us 8 bits which represent descriptors
Byte1 Byte2 Byte3 Byte4 -> unsigned integer
desc1 = Byte1
desc2 = Byte2
desc3 = Byte3
desc4 = Byte4
***/
desc[0] = eax & MASK1;
desc[1] = eax & MASK2;
desc[2] = eax & MASK3;
desc[3] = eax & MASK4;
desc[4] = ebx & MASK1;
desc[5] = ebx & MASK2;
desc[6] = ebx & MASK3;
desc[7] = ebx & MASK4;
desc[8] = ecx & MASK1;
desc[9] = ecx & MASK2;
desc[10] = ecx & MASK3;
desc[11] = ecx & MASK4;
desc[12] = edx & MASK1;
desc[13] = edx & MASK2;
desc[14] = edx & MASK3;
desc[15] = edx & MASK4;
fillData(desc, data);
return data;
}
void debugCache(struct cache* cach) {
printf("L1d=%d\n", cach->L1d);
printf("L1i=%d\n", cach->L1i);
printf("L2=%d\n", cach->L2);
printf("L3=%d\n", cach->L3);
}
void debugTLB(struct TLB* tlb) {
printf("TLBd=%d\n", tlb->TLBd);
printf("TLBi=%d\n", tlb->TLBi);
}
void debugLevel2(struct level2* data) {
debugCache(data->cache);
debugTLB(data->tlb);
}
void freeLevel2(struct level2* data) {
free(data->cache);
free(data->tlb);
free(data);
}

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02h.h Normal file
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#ifndef __02h__
#define __02h__
/***
Cache and TLB's characteristics
***/
struct level2 {
struct cache* cache;
struct TLB* tlb;
};
struct level2* fillLevel2(struct level2* level2);
void debugLevel2(struct level2* level2);
void freeLevel2(struct level2* level2);
#endif

9
main.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include "02h.h"
int main() {
struct level2* level2 = fillLevel2(level2);
debugLevel2(level2);
freeLevel2(level2);
}