topic Re: how to use WHILE directive in Classic/Legacy CodeWarrior

how to use WHILE directive

jjl3 — Tue, 28 Mar 2006 10:34:07 GMT

when I use WHILE(see below), the compiler always reports error.

I can't find an example program.

WHILE r1 <EQ> #0
.

.
ENDW

WHILE r1 == #0
.

.
ENDW

WHILE r1
.

.
ENDW

Re: how to use WHILE directive

CrasyCat — Tue, 28 Mar 2006 19:00:31 GMT

Hello

Where are you trying to use the WHILE construct?
Are you trying to use that in a C source file, in an assembler source file, in a debugger command file?

Which processor are you targeting (HC08, HC12, Coldfire, ....)

CrasyCat

Re: how to use WHILE directive

jjl3 — Wed, 29 Mar 2006 15:16:44 GMT

I use it in assembler source file, target is dsp56f801a60.

for example, I want to know how implement below statements in assembler language.

while(abc > 1)

{

...

}

Re: how to use WHILE directive

CrasyCat — Wed, 29 Mar 2006 20:59:37 GMT

Hello

I have created a sample project for DSP56F801_60MHz an I am able
to assemble an assembly source file containing following code:

.WHILE xr1)+ <EQ> #0 DO
nop
.ENDW
This generates following code:

   move     XR1)+,A
   movei    #0,X0
   cmp      X0,A
   bne      *+3                   ; 0x000006
   nop
   bra      *-5                   ; 0x000000
   rts
Which from my prospective looks good.

Can you please check which Linker you have specified in the Target Settings Panel?

Did you specify M56800 Linker there?

This is the linker you should use for DSP56801.

I know that structured programming is not supported for DSP56800E Linker.

i.e. you cannot use structured assembler for Hawk II cores.

Also make sure you are not using the .WHILE directive in inline assembler. It is supported in macro assembler only.

I hope this helps.

Crasycat

Re: how to use WHILE directive

jjl3 — Thu, 30 Mar 2006 08:42:18 GMT

Thanks for your support!

I used it in inline assembler.