Integrating PIC ASM as a callable function from C18

toodles · Jul 2, 2007

I have a large C18 project currently in place that requires a few functions to be tightly controlled in assembly language. Inline __asm isn't cutting it. Does anyone know of any documentation or existing projects have have a C18 calling a function from a MPASM compiled .asm file, as well as C18 functions being called from an assembly function?

v1r05 · Jul 2, 2007

Inline Assembly

Assembler code can be included in the C code, the block of assembly code starts with _asm and ends with _endasm:
_asm
[label:] [ [arg1[, arg2[, arg3]]]]
_endasm

aussiepoof · Jul 2, 2007

toodles said:
I have a large C18 project currently in place that requires a few functions to be tightly controlled in assembly language. Inline __asm isn't cutting it. Does anyone know of any documentation or existing projects have have a C18 calling a function from a MPASM compiled .asm file, as well as C18 functions being called from an assembly function?

Have you taken a look at the library source code that's included with C18? As I remember it, the memcpy routine is written in assembler using the C18 calling conventions... that might provide you the skeleton you need for your routine.

Regards,
Paul

Integrating PIC ASM as a callable function from C18

toodles

New Member

v1r05

New Member

aussiepoof

New Member

Similar threads

Integrating PIC ASM as a callable function from C18

toodles

New Member

v1r05

New Member

aussiepoof

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency