Code blocks as macro arguments

[fmixolydian]

This is the code of an example i wrote for my audio processor:

rep 4 {
  callw pattern1
}

It's supposed to assemble into:

.L1:
  push_counter 4
  callw pattern1
  djnz .L1 ;decrements counter and, if zero pop it; it non-zero jumps to .L1

To define it, i've tried (in a #ruledef):

rep {times: u4} {code} => 0x8 @ times @ code

However, it doesnt work.

How do i specify a code block (compiled into an int, kinda like with #d) and use it in a function / instruction (also being able to detect its length)?

[hlorenzi]

We don't have proper macros yet, but you can use an asm { } block to compile code into an integer, as you mentioned.
Here's a setup I made which also incorporates the loop mechanics. I had to create a helper emit instruction, because we also still can't use #d blocks inside asm blocks.

#ruledef
{
	push_counter {times: u4} => 0x8 @ times
	callw {address: u16} => 0xaa @ address
	djnz {address: u16} => 0xbb @ address
	
	emit {x} => x
	
    rep {times: u4} {code} => asm {
		loop:
		push_counter {times}
		emit {code}
		djnz loop
	}
}

pattern1:
	#d 0xabcd

rep 4 asm {
  callw pattern1
}

[fmixolydian]

Thanks for the reply!