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The existing code fails some corner cases. Replace it with

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ia64_bsp_adjust() which has been tested to work in all cases for
arbitrary (bsp, nslots) combinations.

reviewed by: marcel@
This commit is contained in:
arun 2004-08-16 22:09:58 +00:00
parent 9950f2481b
commit 55ad7b7d6f
1 changed files with 3 additions and 6 deletions
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9
sys/ia64/ia64/unaligned.c
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@ -74,16 +74,13 @@ static void *
greg_ptr(mcontext_t *mc, int gr)
{
uint64_t *p;
int bias, nslots;
int nslots;
if (gr <= 0 || gr >= 32 + (mc->mc_special.cfm & 0x7f))
return (NULL);
if (gr >= 32) {
p = (void*)mc->mc_special.bspstore;
nslots = (mc->mc_special.cfm & 0x7f) - gr + 32;
bias = (0x1f8 - (mc->mc_special.bspstore & 0x1f8)) >> 3;
nslots += (nslots + bias) / 63;
p -= nslots;
nslots = IA64_CFM_SOF(mc->mc_special.cfm) - gr + 32;
p = (void *)ia64_bsp_adjust(mc->mc_special.bspstore, -nslots);
gr = 0;
} else if (gr >= 14) {
p = &mc->mc_scratch.gr14;