[ASM & Hex✓] call asm from asm routine

[jbmaster21]

is calling asm from asm routine possible, i mean in scripting we use callasm is it possible in compiling asm?

 

[Althurdinok]

Just use instruction 'B{condition} <address>', I suppose.

 

[mgriffin]

Just use instruction 'B{condition} <address>', I suppose.

Or maybe you'll want "BL{condition} <address>" so that the CPU knows where to return to (or I guess you could manually set the LR before branching)?

Anyway, I'm just guessing based on GBATEK, Althurdinok probably knows better than I do :)

 

[Althurdinok]

Or maybe you'll want "BL{condition} <address>" so that the CPU knows where to return to (or I guess you could manually set the LR before branching)?

Anyway, I'm just guessing based on GBATEK, Althurdinok probably knows better than I do :)

I'm new to asm as well :D. That's proper that BL is more often used. {condition} of branch includes L, XL, X, EQ, NE, etc.
BL provides return,
BX allows switching between arm and thumb mode....
All these can be found by searching for documents on ARM instruction, though I just can't master them all now. :)