anotherplan/memlist.c

#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
#include "memlist.h"

void
loadmemlist(char *filename)
{
	int fd = open(filename, OREAD);
	if ( !fd ) {
		exits("couldn't open the file!");
	}

	Dir *filestats = dirfstat(fd);
	if ( filestats == nil ) {
		exits("couldn't fstat the file!");
	}
	vlong filesize = filestats->length;
	print("\"%s\" has size %lld.\n", filename, filesize);
	free(filestats);

	if ( !machbyname("68020") ) {
		exits("libmach doesn't support \"68020\" architecture.");
	}
	Map *bankmap = newmap(nil, 1);
	if (bankmap == nil) {
		exits("couldn't allocate a new map.");
	}
	setmap(bankmap, fd, 0, filesize, 0, "memlist");

	uvlong offset = 0;
	for ( uint assetno = 0; assetno < 10; assetno++ ) {
		Asset readAsset = {0};
		get1(bankmap, offset, (uchar*)  &readAsset.state,     1); offset += 1;
		get1(bankmap, offset, (uchar*)  &readAsset.type,      1); offset += 1; offset += 4;
		get1(bankmap, offset, (uchar*)  &readAsset.rank,      1); offset += 1;
		get1(bankmap, offset, (uchar*)  &readAsset.bank,      1); offset += 1;
		get4(bankmap, offset, (ulong*)  &readAsset.bankoffset  ); offset += 4; offset += 2;
		get2(bankmap, offset, (ushort*) &readAsset.packedlength); offset += 2; offset += 2;
		get2(bankmap, offset, (ushort*) &readAsset.length      ); offset += 2;
		USED(offset); /* this is stupid */
		print("--[asset %d]--\n",  assetno);
		print("state:  0x%02X.\n", readAsset.state);
		print("type:   0x%02X.\n", readAsset.type);
		print("rank:   0x%02X.\n", readAsset.rank);
		print("bank:   0x%02X.\n", readAsset.bank);
		print("offset: %lld.\n",   readAsset.bankoffset);
		print("packed: %d.\n",     readAsset.packedlength);
		print("length: %d.\n",     readAsset.length);
	}

	if (fd) {
		close(fd);
	}
	free(bankmap);
}