Parser done, now I am trying to create the code generation part?

[David]

Hi guys, so I finished the parsing part, now I need to convert my assembly code into hex...  Can anybody link me to some good resources on making an assembler for my programming language?

The only operands I am planning on implementing are:

PUSH, POP, CALL, ADD, SUB, and MOV.    I know that jumps will be too hard for me right now, and theres no use adding CMP or TEST if theres no jumps.  So where can I find a good read on doing this?  I would also need to construct the import table.

Basically I am thinking about going about it like this:

Create an EXE file, open it in a hex editor.  Steal it's Hex data, and add hex data to the middle.  But I am pretty confident that is not how it's done.  Anyway, to get back on topic, can anybody please link me to a good read about this?  I already know PE header format, the only problem is I wouldn't know how to create it in hex.

Thanks, David.

[dedndave]

nothing like reading it from the horses mouth...

http://www.intel.com/products/processor/manuals/

if you are going to employ CALL, JMP shouldn't be that hard
as for conditional branches, there are only 16 basic ones
you can read all about them in the manuals

[Slugsnack]

the book called "engineering a compiler" was really useful to me when i made a compiler. the code gen is not the hard part, optimization is

[joemc]

If you make call you might want to make ret too :)
edit: ohh yeah you might just want to call the windows API.
Implementing CMOV might be easier than JMP, atleast i imagine it can be done in one pass instead of two. and it could help with some program flow.

[Slugsnack]

oh i had mistaken this thread thinking OP was making a compiler. assembler is a different matter. in that case, intel manuals that dave linked to are definitely where you want to be looking.