URL:
<http://savannah.nongnu.org/bugs/?36611>
Summary: _delay_loop_2 must not use constraint "w" with all
targets
Project: AVR C Runtime Library
Submitted by: gjlayde
Submitted on: Fr 08 Jun 2012 22:36:27 GMT
Category: Header
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Header files
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.8.0
Fixed Release: None
_______________________________________________________
Details:
./include/util/delay_basic.h
implements:
void
_delay_loop_2(uint16_t __count)
{
__asm__ volatile (
"1: sbiw %0,1" "\n\t"
"brne 1b"
: "=w" (__count)
: "0" (__count)
);
}
This won't work for tiny tiny targets because
- they don't have SBIW
- compiler with suprt for these targets empty the register
class associated with "w". Thus, the compiler will throw
an error if it sees "w".
_______________________________________________________
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<http://savannah.nongnu.org/bugs/?36611>
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