np2/i386c/ia32/cpu_mem.c - diff

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version 1.6, 2004/01/23 14:33:26	version 1.7, 2004/01/25 07:53:08
Line 31	Line 31
#include "cpu.h"	#include "cpu.h"
#include "memory.h"	#include "memory.h"

BYTE *cpumem = 0;	// static BYTE *cpumem = 0;
DWORD extmem_size = 0;	// static DWORD extmem_size = 0;
BYTE protectmem_size = 0;
	#define cpumem i386core.e.ext
	#define extmem_size i386core.e.extsize


/*	/*
Line 41 BYTE protectmem_size = 0;	Line 43 BYTE protectmem_size = 0;
*/	*/

int	int
init_cpumem(BYTE usemem)	init_cpumem(UINT8 usemem)
{	{
DWORD size;	UINT32 size;

if (usemem > 13)
usemem = 13;
size = usemem << 20;	size = usemem << 20;
	if (size >= (LOWMEM - 0x100000)) {
if (extmem_size != size - (LOWMEM - 0x100000)) {	size -= (LOWMEM - 0x100000);
	}
	else {
	size = 0;
	}
	if (extmem_size != size) {
if (cpumem) {	if (cpumem) {
free(cpumem);	free(cpumem);
cpumem = 0;	cpumem = 0;
}	}
if (size <= LOWMEM - 0x100000) {	if (size) {
extmem_size = 0;	cpumem = (BYTE *)malloc(size);
cpumem = 0;
} else {
extmem_size = size - (LOWMEM - 0x100000);
cpumem = (BYTE *)malloc(extmem_size);
if (cpumem == NULL) {	if (cpumem == NULL) {
protectmem_size = 0;	size = 0;
return FAILURE;
}	}
memset(cpumem, 0, extmem_size);
}	}
	extmem_size = size;
}	}
protectmem_size = usemem;
return SUCCESS;	return SUCCESS;
}	}

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