Mail Archives: djgpp/1999/01/10/23:10:47
From: | Adnan Khaleel <adnan AT ee DOT tamu DOT edu>
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | Help with Assembly -
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Date: | Sun, 10 Jan 1999 21:37:45 -0600
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Organization: | Texas A&M University, College Station, Texas
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Lines: | 54
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Message-ID: | <36997209.B16493B@ee.tamu.edu>
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NNTP-Posting-Host: | modem-0665.rns.tamu.edu
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Mime-Version: | 1.0
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NNTP-Posting-Date: | 11 Jan 1999 03:38:47 GMT
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X-Mailer: | Mozilla 4.5 [en] (Win98; I)
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X-Accept-Language: | en
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Reply-To: | djgpp AT delorie DOT com
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Hi there,
I'm porting a program from UNIX over to dos and I'm using the good old
DJGPP for it (what else!). I have one problem that I cant figure out.
One of the files of the source code is written entirely in assembly and
has several routines and is contained in a file with a .s extention. All
the files i.e. all the *.c and this *.s file are compiled into object
files and then into a library. Later this library in called during
linking the usual.
Everything compiles fine even the .s file but when I link it later on, I
get errors saying that there is an undefined reference to the functions
in the .s file. I've done exactly the same think in UNIX and I've never
encountered these errors.
Here is a sample from that .s file just in case.
.file "subs.s"
.text
.globl _restore
_restore:
movl _spp,%esp
movl _fpp,%ebp
movl _xlen,%ebx
movl _xto,%esi
movl _xfrom,%edi
jmp .L1
.L0:
movl %esi,%eax
movl %edi,%edx
movl (%edx),%ecx
movl %ecx,(%eax)
addl $4,%esi
addl $4,%edi
.L1:
movl %ebx,%eax
decl %ebx
testl %eax,%eax
jg .L0
movl (%esp),%ebx
movl 4(%esp),%esi
movl 8(%esp),%edi
leave
ret
where _spp, _fpp .... are global variables. Its in the standard AT&T
syntax so thats not the problem.
Any help or pointers appreciated.
Adnan
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