motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

microblaze: Improve subkc

Browse source 
Move code from the helper into the translator. The remaining
helper parts can reuse helper_addkc, making it possible to
remove helper_subkc entirely.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2011-01-22 12:39:16 +01:00
parent 7e9e433008
commit e0a42ebc08
3 changed files with 51 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

22
target-microblaze/op_helper.c
View file

@ -138,28 +138,6 @@ uint32_t helper_addkc(uint32_t a, uint32_t b, uint32_t cf)
return ncf;
}
uint32_t helper_subkc(uint32_t a, uint32_t b, uint32_t k, uint32_t c)
{
uint32_t d, cf = 1, ncf;
if (c)
cf = env->sregs[SR_MSR] >> 31;
assert(cf == 0 || cf == 1);
d = b + ~a + cf;
if (!k) {
ncf = compute_carry(b, ~a, cf);
assert(ncf == 0 || ncf == 1);
if (ncf)
env->sregs[SR_MSR] |= MSR_C | MSR_CC;
else
env->sregs[SR_MSR] &= ~(MSR_C | MSR_CC);
}
D(qemu_log("%x = %x + %x cf=%d ncf=%d k=%d c=%d\n",
d, a, b, cf, ncf, k, c));
return d;
}
static inline int div_prepare(uint32_t a, uint32_t b)
{
if (b == 0) {