Hi All,

This is my first time in the FASM forum.

Recently I have started to build an OO compiler. I want to build my own assembler for it, I know the basics of assembler development. But I dont know how to assemble jumps and procedures.

Can any one advise me how to implement jumps and procedures.

thanks

Viraj

my advice would be to use FASM as backend compiler, if you don't know how to do this.

Hi Vid,

thanks for the reply.
I really wants to build my own assembler cos it is my final year project.

Rgds,

Viraj

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> Recently I have started to build an OO compiler. I want to build my own assembler

> really wants to build my own assembler cos it is my final year project.

Isn't the OO compiler itself hard enough ?

> But I dont know how to assemble jumps and procedures.

1. CPU has no procedures. "proc" in MASM is just a sub, with some odd extra stuff processed/added by the assembler (stack frame, "local" stuff, parameter counting/checking ?).

2. Jumps: you need at least 2 passes.
- 1st pass place all labels into a table, compile back jumps but leave forward jumps open (assume "near")
- 2nd pass fill the forward jumps from table
This works but is suboptimal ... FASM does more than 2 passes and is better.

And YES, you should focus on your "OO" and just use FASM.

When compiling to asm for the fasm backend, use jmp for jumps and call for procedures (as for these, you can create a stack frame using the enter/leave instructions or by modifying esp, the CPU won't do if for you).