Hi all! in <iomacros.h> i got these defs:
#define _BIS_SR(x) __asm__ __volatile__( "bis %0, r2" : : "i" ((uint16_t)x) ); #define _BIC_SR(x) __asm__ __volatile__( "bic %0, r2" : : "i" ((uint16_t)x) ); #define __bis_SR_register(x) __asm__ __volatile__( "bis %0, r2" : : "i" ((uint16_t)x) ); #define __bic_SR_register(x) __asm__ __volatile__( "bic %0, r2" : : "i" ((uint16_t)x) ); in the post "Constraints on inline asm operands" of 2005-01-20 the author noted that the constraints "i" requires an immediate value (i.e. a constant), otherwise an error is generated. That's fine. So my question is: shouldn't the 3rd and 4th defs have the constraint "r" ? I mean, from their name I understand they were meant to operate register to register, weren't they? Is that a copy-and-paste mistake or is there a reason i can't get ? For the moment I defined my own: __my_bis_SR_register(x) __asm__ __volatile__( "bis %0, r2" : : "r" ((uint16_t)x) ); Roberto
