Very new to asm coding. Puzzled why systemTimer.s Wait loop$ uses: ` sub elapsed,r0,start` to delay? Q1. Isn't GetTimeStamp 64bit, but SUB 32-bit? Q2. Why is it ok to ignore r1 counter values and only subtract on r0?
Very new to asm coding.
Puzzled why systemTimer.s Wait loop$ uses:
sub elapsed,r0,startto delay?
Q1. Isn't GetTimeStamp 64bit, but SUB 32-bit?
Q2. Why is it ok to ignore r1 counter values and only subtract on r0?