Hello,

does fasmarm have any support for extracting the upper16 and lower16 bits to write a macro to load a register with a 32 bit value directly?

Regards,
Shailesh

Assuming you are using 32-bit code then:

Code:

macro movlit reg,value {   movw reg,(value) and 0xffff   movt reg,(value) shr 16 } movlit r0,0x12345678

Thanks! Worked like a charm. The and and shr commands are, I am assuming, compiler specific. Can I find info about them in the fasm documentation? It wold be interesting to see what other commands I can use for implementing macros.

fasmarm uses all the same operators as fasm. You'll need to check the fasm documentation for the basic assembler things and the specific fasmarm documentation for the ARM related stuff.

In essence you'll get:

and
or
xor
not
shl
shr
bsr
*
/
+
-
etc.

See the fasm manual for the precedence rules.