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ld returned some errors when I link memory.o,page.o.
The program ld came from a package which can be downloaded at http://www.osdever.net/downloads/other/ ... ls2112.zip
and if I link the two files with ld -r -o mm.o memory.o page.o,it runs ok.En,what's the different between elf_i386 and i386-go32?How to creat a ld.exe under win system?(I mean if the version of this ld is too low?).The most important,
is there any way else I can creat the mm.o file correctly?

(you can download tomm.zip which contains mm.o and memory.o at http://tmxk.net/312/tomm.zip if you want to help me )

ld -m elf_i386 -r -o mm.o memory.o page.o
Exiting due to signal SIGFPE
Division by Zero at eip=00047af8, x87 status=0000
eax=00000000 ebx=00127b10 ecx=00000000 edx=00000000 esi=00120d70 edi=0000000
ebp=0011a948 esp=0011a860 program=d:\DJGPP\BIN\ld.exe
cs: sel=01ff base=01da0000 limit=0013ffff
ds: sel=0207 base=01da0000 limit=0013ffff
es: sel=0207 base=01da0000 limit=0013ffff
fs: sel=01d7 base=00009ab0 limit=0000ffff
gs: sel=0217 base=00000000 limit=0010ffff
ss: sel=0207 base=01da0000 limit=0013ffff
App stack: [0011a9c0..0009a9c0] Exceptn stack: [0009a914..000989d4]

Call frame traceback EIPs:
0x00047af8
0x0001cb30
0x0001a308
0x00082552
make.exe: *** [mm.o] Error -1

elf_i386 is an ELF target, while i386_go32 is a COFF file within a MS-DOS program that enters pmode and loads it ...

there are chances that your .O files you give to LD are *not* ELF files but rather COFF files ... You can know by looking at them through an hex editor (the 3 first bytes of an ELF are 'E' 'L' 'F' ...)

Thanks Very Much.

Well,when I link them with another ld whose version is lower,it returns a message.
According to what it said,I changed "AS   =as" in Makefile to "AS   =as --em=i386elf",and it works ok now.

Oh,I nearly forget it.
I also did all of these below:
1. Find the SPECS file. It usually resides in drive:/djgpproot/lib/gcc-lib/djgpp/3.04.
2. Change the line --traditional-format (next to *asm:) to --em=i386elf, so that GAS will

always produce ELF object files.
3. Delete the line %{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}

(usually the last one), so that your ELF files won't get a DJGPP stub attached to them.
4. Create an empty djgpp-x.djl file in the same directory.
5. Always run LD with -m elf_i386 so that it will produce ELF executables.
(from "DJGPP port of GNU Bintuils 2_11_2 with ELF support.htm")