Warning: Attempt to read property "date" on null in /usr/local/www/websvn.planix.org/blame.php on line 247

Warning: Attempt to read property "msg" on null in /usr/local/www/websvn.planix.org/blame.php on line 247
WebSVN – planix.SVN – Blame – /os/branches/feature_fixcpp/sys/src/ape/lib/ap/power/cycles.s – Rev 2

Subversion Repositories planix.SVN

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#define TBRL	268
2 
#define TBRU	269		/* Time base Upper/Lower (Reading) */
3 
 
4 
/*
5 
 * time stamp counter; _cycles since power up
6 
 * Runs at fasthz/4 cycles per second (m->clkin>>3)
7 
 */
8 
TEXT _cycles(SB),1,$0
9 
loop:
10 
	MOVW	SPR(TBRU),R7
11 
	MOVW	SPR(TBRL),R8
12 
	MOVW	SPR(TBRU),R5
13 
	CMP	R5,R7
14 
	BNE	loop
15 
	MOVW	R7,0(R3)
16 
	MOVW	R8,4(R3)
17 
	RETURN