d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Replace the inline asm in delay() with a while loop. This may not be as

Browse Source 
efficient but it appears to actually work.  Some investigation may be
required.
This commit is contained in:
Benno Rice 2003-02-05 11:26:14 +00:00
parent 8bc7bc1ea0
commit 4a95ae9a68
2 changed files with 8 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/powerpc/aim/clock.c
View File

@ -310,16 +310,12 @@ decr_get_timecount(struct timecounter *tc)
void void
delay(int n) delay(int n)
{ {
u_quad_t tb; u_quad_t tb, ttb;
u_long tbh, tbl, scratch;
tb = mftb(); tb = mftb();
tb += (n * 1000 + ns_per_tick - 1) / ns_per_tick; ttb = tb + (n * 1000 + ns_per_tick - 1) / ns_per_tick;
tbh = tb >> 32; while (tb < ttb)
tbl = tb; tb = mftb();
__asm ("1: mftbu %0; cmplw %0,%1; blt 1b; bgt 2f;"
"mftb %0; cmplw %0,%2; blt 1b; 2:"
: "=r"(scratch) : "r"(tbh), "r"(tbl));
} }
/* /*

12
sys/powerpc/powerpc/clock.c
View File

@ -310,16 +310,12 @@ decr_get_timecount(struct timecounter *tc)
void void
delay(int n) delay(int n)
{ {
u_quad_t tb; u_quad_t tb, ttb;
u_long tbh, tbl, scratch;
tb = mftb(); tb = mftb();
tb += (n * 1000 + ns_per_tick - 1) / ns_per_tick; ttb = tb + (n * 1000 + ns_per_tick - 1) / ns_per_tick;
tbh = tb >> 32; while (tb < ttb)
tbl = tb; tb = mftb();
__asm ("1: mftbu %0; cmplw %0,%1; blt 1b; bgt 2f;"
"mftb %0; cmplw %0,%2; blt 1b; 2:"
: "=r"(scratch) : "r"(tbh), "r"(tbl));
} }
/* /*