I'd probably drop the "symbolic operand name" example instead; the very error itself is a good example as to why you should avoid introducing identifiers when you don't have to.
Code:
static inline uint8_t inb(uint16_t port)
{
uint8_t ret;
asm volatile ( "inb %1, %0"
: "=a"(ret)
: "Nd"(port) );
return ret;
}
{
uint8_t ret;
asm volatile ( "inb %1, %0"
: "=a"(ret)
: "Nd"(port) );
return ret;
}
Then again, I am by no means an expert on the inline assembly syntax, have never actually used it myself, and have no idea if the code above does what it should or will launch da bomb.
