/*
?Copyright?（c）?1992?The?Regents?of?the?University?of?California.
?All?rights?reserved.??See?copyright.h?for?copyright?notice?and?limitation?
?of?liability?and?disclaimer?of?warranty?provisions.
?*/

/*?This?program?reads?in?a?COFF?format?file?and?outputs?a?flat?file?--
?*?the?flat?file?can?then?be?copied?directly?to?virtual?memory?and?executed.
?*?In?other?words?the?various?pieces?of?the?object?code?are?loaded?at?
?*?the?appropriate?offset?in?the?flat?file.
?*
?*?Assumes?coff?file?compiled?with?-N?-T?0?to?make?sure?it‘s?not?shared?text.
?*/

#define?MAIN
#include?“copyright.h“
#undef?MAIN

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

/*?NOTE?--?once?you?have?implemented?large?files?it‘s?ok?to?make?this?bigger!?*/
#define?StackSize??????		1024??????/*?in?bytes?*/
#define?ReadStruct（fs）?	Read（f（char?*）&ssizeof（s））

extern?char?*malloc（）;

/*?read?and?check?for?error?*/
void?Read（int?fd?char?*buf?int?nBytes）
{
????if?（read（fd?buf?nBytes）?!=?nBytes）?{
	fprintf（stderr?“File?is?too?short\n“）;
	exit（1）;
????}
}

/*?write?and?check?for?error?*/
void?Write（int?fd?char?*buf?int?nBytes）
{
????if?（write（fd?buf?nBytes）?!=?nBytes）?{
	fprintf（stderr?“Unable?to?write?file\n“）;
	exit（1）;
????}
}

/*?do?the?real?work?*/
main?（int?argc?char?**argv）
{
????int?fdIn?fdOut?numsections?i?top?tmp;
????struct?filehdr?fileh;
????struct?aouthdr?systemh;
????struct?scnhdr?*sections;
????char?*buffer;

????if?（argc?	fprintf（stderr?“Usage:?%s??\n“?argv[0]）;
	exit（1）;
????}
????
/*?open?the?object?file?（input）?*/
????fdIn?=?open（argv[1]?O_RDONLY?0）;
????if?（fdIn?==?-1）?{
	perror（argv[1]）;
	exit（1）;
????}

/*?open?the?flat?file?（output）?*/
????fdOut?=?open（argv[2]?O_RDWR|O_CREAT|O_TRUNC?0666）;
????if?（fdIn?==?-1）?{
	perror（argv[2]）;
	exit（1）;
????}
????
/*?Read?in?the?file?header?and?check?the?magic?number.?*/
????ReadStruct（fdInfileh）;
????if?（fileh.f_magic?!=?MIPSELMAGIC）?{
	fprintf（stderr?“File?is?not?a?MIPSEL?COFF?file\n“）;
	exit（1）;
????}
????
/*?Read?in?the?system?header?and?check?the?magic?number?*/
????ReadStruct（fdInsystemh）;
????if?（systemh.magic?!=?OMAGIC）?{
	fprintf（stderr?“File?is?not?a?OMAGIC?file\n“）;
	exit（1）;
????}
????
/*?Read?in?the?section?headers.?*/
????numsections?=?fileh.f_nscns;
????sections?=?（struct?scnhdr?*）malloc（fileh.f_nscns?*?sizeof（struct?scnhdr））;
????Read（fdIn?（char?*）?sections?fileh.f_nscns?*?sizeof（struct?scnhdr））;

?/*?Copy?the?segments?in?*/
????printf（“Loading?%d?sections:\n“?fileh.f_nscns）;
????for?（top?=?0?i?=?0;?i?	printf（“\t\“%s\“?filepos?0x%x?mempos?0x%x?size?0x%x\n“
	??????sections[i].s_name?sections[i].s_scnptr
	??????sections[i].s_paddr?sections[i].s_size）;
	if?（（sections[i].s_paddr?+?sections[i].s_size）?>?top）
	????top?=?sections[i].s_paddr?+?sections[i].s_size;
	if?（strcm

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1132??2005-01-15?00:00??實驗四\code\Makefile

?????文件???????4345??2009-07-11?10:37??實驗四\code\Makefile.common

?????文件????????744??2002-01-09?00:00??實驗四\code\Makefile.dep

?????文件???????2314??1993-11-19?00:00??實驗四\code\bin\coff.h

?????文件???????3558??1993-10-04?00:00??實驗四\code\bin\coff2flat.c

?????文件??????13158??2009-07-11?01:20??實驗四\code\bin\coff2noff

?????文件???????6856??1994-01-12?00:00??實驗四\code\bin\coff2noff.c

?????文件???????9740??2009-07-11?01:20??實驗四\code\bin\coff2noff.o

?????文件???????3905??1993-10-04?00:00??實驗四\code\bin\d.c

?????文件???????3652??1993-10-04?00:00??實驗四\code\bin\disasm.c

?????文件???????1780??1993-10-04?00:00??實驗四\code\bin\encode.h

?????文件??????11666??1993-10-04?00:00??實驗四\code\bin\execute.c

?????文件????????120??1993-11-19?00:00??實驗四\code\bin\halt

?????文件????????678??1993-10-04?00:00??實驗四\code\bin\instr.h

?????文件???????1041??1993-10-04?00:00??實驗四\code\bin\int.h

?????文件???????3607??1993-10-04?00:00??實驗四\code\bin\main.c

?????文件????????965??2002-01-09?00:00??實驗四\code\bin\Makefile

?????文件????????787??1993-11-20?00:00??實驗四\code\bin\noff.h

?????文件???????1346??1993-10-04?00:00??實驗四\code\bin\opstrings.c

?????文件???????5725??1994-03-02?00:00??實驗四\code\bin\out.c

?????文件???????2703??1993-10-04?00:00??實驗四\code\bin\system.c

?????文件??????50760??2009-07-11?10:56??實驗四\code\filesys\addrspace.o

?????文件??????10312??2009-07-11?01:19??實驗四\code\filesys\bitmap.o

?????文件??????11316??2009-07-11?10:57??實驗四\code\filesys\console.o

?????文件???????6247??1994-02-01?00:00??實驗四\code\filesys\directory.cc

?????文件???????2878??1993-11-19?00:00??實驗四\code\filesys\directory.h

?????文件??????10392??2009-07-11?01:19??實驗四\code\filesys\directory.o

?????文件??????15284??2009-07-11?10:57??實驗四\code\filesys\disk.o

?????文件??????50672??2009-07-11?10:57??實驗四\code\filesys\exception.o

?????文件???????5028??1994-02-01?00:00??實驗四\code\filesys\filehdr.cc

............此處省略270個文件信息