I took a stab at this in Perl a few years ago, but I was going the opposite direction (MASM to gas). Most of it's fairly straightforward, but there was a lot of complexity on the Intel side when it came to handling some of the more obscure addressing modes and varieties of file inclusion, among other things.
Converting the other way should avoid these problems because the gas assembly format is simpler.
There are a number of discussions of this topic online, and some of them list tools for performing the conversion. I googled on "gas to MASM assembly format conversion" and found:
http://www.delorie.com/djgpp/v2faq/faq17_2.html
[yes, I know google throws out "to" ;-]
Also check the Linux Assembly HOWTO under "Assemblers":
http://linuxassembly.org/howto/assemblers.html
GCC has a lot of compatibility options, but I don't think you can get gas to produce any other assembly formats. If you want to look over the options, there's a link for that here:
http://www.math.utah.edu/docs/info/gcc_6.html#SEC19
Good luck with your project!
Scott C.
Bryan Burroughs wrote:
Howdy,
I am using GCC to crank out some intel assembler code on some C programs I have written, but the output is foreign to me. I assume it is in a different "assembler format", as in there is MASM and TASM and others... Does anyone happen to know what "format" GCC uses, so I can compare it to TASM code? Or, even better, if there is a way to force GCC to output Intel code, as opposed to AT&T, as it appears to be doing. I'm a little new to this whole assembly thing, and I want to compare what I write with what the compiler generates for a HLL version of the same code. As best I can tell, Intel code is what I am used to, and I could look past the MASM/TASM difference, but this %eax, which I know to mean the ax register, and all of the l's after each instruction are driving me crazy! Any help would be greatly appreciated. Oh, and if anyone knows how to link assembly object or source code(TASM, of course) with a C main program using GCC, I'd be very grateful if you could pass said knowledge along to me.
Bryan Burroughs
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