MicroC, Macros, inline asm and parameters

[Elysion]

Hi,

I have a function like below. How could I make it compile?

MacroTest.c below

Code:

#include "MacroTest.h"

void main() {
    char var1;
    
    var1 = 80;

    SaveBankSelectRegister(var1);
}

MacroTest.h below

Code:

#ifndef __Macro
#define __Macro

#define SaveBankSelectRegister(SaveVariable)          asm { movff  BSR, SaveVariable }

#endif

Undeclared identifier '_var1' in expression MacroTest.c

Normally, if I use this as a function, I put a "_" infront of the variable in asm like below. What about using it in macros?

Code:

void SaveBankSelectRegister(char saveVariable)
{
   asm { movff  BSR, _saveVariable }  
}

[flo0319]

Hi , you need to use the concatenate operator ##

   

Code:

#define SaveBankSelectRegister(SaveVariable)          asm { movff  BSR, _##SaveVariable }

[zuisti]

This form is working:

Code:

#define SaveBankSelectRegister(SaveVariable)   asm  movff  BSR, _##SaveVariable

char var1; // global, to save BSR

void main() {

    SaveBankSelectRegister(var1);
}

[Elysion]

Hi,

I have the below code. How is the correct phrase? Thanks.


source:

Code:

#include "MacroTest.h"

char  x1;
char  x2;

void main() {

    x1 = 1;
    x2 = 1;

    TestMacro(x1);
}

header:

Code:

#define TestMacro(sample )    _asm { movf        _##sample+1,0,1         \
                                        xorwf         _x2+1,0,1     \
                                   }\

Posted on: March 25, 2015, 08:50:42 20:50 - Automerged
Ok. ";" done all the magic.

Thanks