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objcopy - Invalid operation

James james00_c@yahoo.com
Thu Oct 23 19:57:00 GMT 2003 
I posted the enclosed message yesterday and haven't
received a response from anyone as yet. If this is not
the appropriate group then can anyone recommend one? 

I have also posted the below message to
help-gnu-utils@gnu.org but haven't received any
responses from there either and looking at its
archives from past 2 months it does not appear to be
"active". 

I am currently using objcopy version 2.13.90 on a
Darwin Kernel Version 6.8 system in case that useful! 
Thanks!

James   

PS: My apologies for the cross posting.

--- James <james00_c@yahoo.com> wrote:
> Greetings-
> 
> I am trying to rename a symbol in an object file
> called "error_msg.o" and following is its
> information:
> 
> % objdump -t error_msg.o
> 
> error_msg.o:     file format mach-o-be
> 
> SYMBOL TABLE:
> 00000000000006a4         LC_SEGMENT.__TEXT.__cstring
> _rcsid
> 00000000000003f8         LC_SEGMENT.__DATA.__data
> _copyright
> 000000000000036c         LC_SEGMENT.__TEXT.__text
> __et_list
> 0000000000000370         LC_SEGMENT.__TEXT.__text
> _vmsgs
> 0000000000000000         *UND* _negative_message
> 000000000000074c         LC_SEGMENT.__DATA.__const
> _buffer
> 00000000000000bc         *UND* _volume_message
> 0000000000000314 g       *UND* _add_to_error_table
> 00000000000000fc g       *UND* _error_message
> 0000000000000000 g       *UND* _error_table_name
> 0000000000000000 g       *UND* _sprintf
> 0000000000000000 g       *UND* _strcat
> 0000000000000000 g       *UND* _strerror
> 0000000000000000 g       *UND*
> dyld_stub_binding_helper
> 
> The error messages that I receive are as follows:
>  
> % objcopy --redefine-sym
> _error_message=_au_error_message error_msg.o
> objcopy: error_msg.o: Invalid operation
> 
> % objcopy -F mach-o-be --redefine-sym
> _error_message=_au_error_message error_msg.o
> error_msg2.o
> objcopy: error_msg.o: Invalid operation
> 
> % objcopy -I mach-o-be -O mach-o-be
> _error_message=_au_error_message error_msg.o
> error_msg2.o
> objcopy: error_msg.o: Invalid operation
> 
> % objcopy -I mach-o-be -O mach-o-be error_msg.o
> error_msg2.o
> objcopy: error_msg.o: Invalid operation
> objcopy: error_msg2.o: File truncated
> % ls -l
> total 64
> -rw-r--r--  1 aojc  staff  3948 Oct 22 15:30
> error_msg.o 
> 
> -rw-r--r--  1 aojc  staff    84 Oct 22 15:53
> error_msg2.o 
> 
> % objdump -t error_msg2.o
> objdump: error_msg2.o: File format not recognized
> 
> % objdump --help
> <snip>
> objdump: supported targets: mach-o-be mach-o-le
> mach-o-fat pef pef-xlib sym srec symbolsrec tekhex
> binary ihex
> objdump: supported architectures: powerpc:common
> powerpc:common64 powerpc:603 powerpc:EC603e
> powerpc:604 powerpc:403 powerpc:601 powerpc:620
> powerpc:630 powerpc:a35 power
> pc:rs64ii powerpc:rs64iii powerpc:7400 powerpc:e500
> powerpc:MPC8XX powerpc:970 rs6000:6000 rs600
> 0:rs1 rs6000:rsc rs6000:rs2 i386 i386:x86-64 i8086
> i386:x86-64:intel i386:intel
> 
> Any suggestions on how to resolve this problem? 
> Thanks!
> 
> James
> 
> 
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