Hello Erik, Thanks for your reply. I would like to eloborate the description of my problem: I am working on a tool which reads each line of intel assembly and converts into gas format. In Intel assembly, '.org' directive can move the location counter backwards. For example: 1 .org 0x4 2 symbol1: 3 .long 4 4 5 .org 0x8 6 hello: 7 .word 2 8 9 .org 0x4 10 symbol2: 11 .long symbol1 The tool will read each line at a time and converts the same to the corresponding gas format and outputs it immediately. Considering the above example, By the time it reaches line no. 9, it does not have any info of previous .org occurances and hence it generates the corresponding .org directive in gas format. But this creates the problem, bcoz we will be trying to move the location counter backwards, which is not allowed in 'gas'. If I maintain list of symbols and their start memory locations, now when I reach line no 9 and observe that a symbol has already been created at this address, then is it possible for me now to create an alias with name 'symbol2' for the symbol created earlier 'symbol1'. Pls help me in this regard. TIA, Raghu. -----Original Message----- From: Erik Christiansen [mailto:erik@xxxxxxxxxxxxx] Sent: Tuesday, November 25, 2003 5:54 AM To: Raghunath L- CTD, Chennai. Cc: gcc-help@xxxxxxxxxxx Subject: Re: Symbol Aliasing On Mon, Nov 24, 2003 at 07:27:32PM +0530, Raghunath L- CTD, Chennai. wrote: > Symbol1: > .long 4 ;Creates a symbol > > I want to create an alias 'Symbol2' for the original symbol 'Symbol1' . > With this I want to refer the memory location '0x4' > either with the name 'Symbol1' or with the name 'Symbol2'. For the restricted case of aliasing a code or data address, you can use: Symbol2: Symbol1: .long 4 Both symbols can be used, and both appear in the map file (if declared global), but only the first appears in an objdump of the elf file. (So don't be alarmed by this.) Erik
