Strange additional data in text section of arm-coff object files

[David Lin]

Hi, everybody
 
There is something strange about the COFF file 
generated by arm-coff tools
I built an environment for building COFF files on 
target machine with ARM processor
As the manual of ld descriped, executable object 
codes could be generated
and relocatable object files could also be created 
with additional flag '-r'
 
for example:

 
arm-coff-gcc -c init.c
arm-coff-gcc -c hello.c
arm-coff-ld -e _hello -o hello_cof.o hello.o 
init.o
arm-coff-ld -r -e _hello -o hello_rel.o hello.o 
init.o
 
 
By observing the executable COFF file 
hello_cof.o and relocatable file hello_rel.o, 
there is surely something different
 
Concerning the text section only, 
I found size of text in  hello_cof.o is 
16-byte more than size in hello_rel.o
content of these 16 bytes of data is "FFFFFFFF 
00000000 FFFFFFFF 00000000"
 
On the experience of prevous work, it is similiar to 
the m68k case, the cross-platform tools for Motorola 68k processors
size of text section in executable object files is 
also 16 byte more than in relocatable ones
content of these 16 bytes of data, however, is 
"00000000 00000000 00000000 00000000"
 
does this circumstance imply something?
I am interested in it :)
 
Here is my experimental environment
 
CPU: Intel Pentium 755

OS: MS Windows 98
Environment: cygwin 1.3.3-1
version of binutils: 2.11.90 (with BFD 
2.11.90)
version of gcc: 2.95.3-4 (cygwin 
special)
version of newlib: 1.9.0
target: arm-coff
 
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