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how can I return a value within embedded assembler?
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how can I return a value within embedded assembler?
Offline
Sebastian Gaertner
over 7 years ago
Note: This was originally posted on 8th May 2009 at http://forums.arm.com
Hi,
does anybody know how I can write an embedded ASM function that returns the actual PSR value? I prefered to go on like this:
int getCpsr( void )
{
int currentCPSR;
MRS currentCPSR, CPSR
return currentCPSR;
}
how can I return a value within embedded assembler?
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guestposter guestposter
over 7 years ago
Note: This was originally posted on 8th May 2009 at
http://forums.arm.com
Try embedded Assembler
__asm unsigned getCpsr( void )
{
MRS R0, APSR
BX LR ; return
}
And call it as normal C function.
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guestposter guestposter
over 7 years ago
Note: This was originally posted on 8th May 2009 at
http://forums.arm.com
Try embedded Assembler
__asm unsigned getCpsr( void )
{
MRS R0, APSR
BX LR ; return
}
And call it as normal C function.
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