Use host-utils for PowerPC 64 64x64 bits multiplications.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3442 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
parent
cd346349b4
commit
9d901a201b
|
@ -980,7 +980,7 @@ void OPPROTO op_mulhd (void)
|
|||
{
|
||||
uint64_t tl, th;
|
||||
|
||||
do_imul64(&tl, &th);
|
||||
muls64(&tl, &th, T0, T1);
|
||||
T0 = th;
|
||||
RETURN();
|
||||
}
|
||||
|
@ -998,7 +998,7 @@ void OPPROTO op_mulhdu (void)
|
|||
{
|
||||
uint64_t tl, th;
|
||||
|
||||
do_mul64(&tl, &th);
|
||||
mulu64(&tl, &th, T0, T1);
|
||||
T0 = th;
|
||||
RETURN();
|
||||
}
|
||||
|
|
|
@ -199,79 +199,6 @@ void ppc_store_dump_spr (int sprn, target_ulong val)
|
|||
|
||||
/*****************************************************************************/
|
||||
/* Fixed point operations helpers */
|
||||
#if defined(TARGET_PPC64)
|
||||
static void add128 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
|
||||
{
|
||||
*plow += a;
|
||||
/* carry test */
|
||||
if (*plow < a)
|
||||
(*phigh)++;
|
||||
*phigh += b;
|
||||
}
|
||||
|
||||
static void neg128 (uint64_t *plow, uint64_t *phigh)
|
||||
{
|
||||
*plow = ~*plow;
|
||||
*phigh = ~*phigh;
|
||||
add128(plow, phigh, 1, 0);
|
||||
}
|
||||
|
||||
static void mul64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
|
||||
{
|
||||
uint32_t a0, a1, b0, b1;
|
||||
uint64_t v;
|
||||
|
||||
a0 = a;
|
||||
a1 = a >> 32;
|
||||
|
||||
b0 = b;
|
||||
b1 = b >> 32;
|
||||
|
||||
v = (uint64_t)a0 * (uint64_t)b0;
|
||||
*plow = v;
|
||||
*phigh = 0;
|
||||
|
||||
v = (uint64_t)a0 * (uint64_t)b1;
|
||||
add128(plow, phigh, v << 32, v >> 32);
|
||||
|
||||
v = (uint64_t)a1 * (uint64_t)b0;
|
||||
add128(plow, phigh, v << 32, v >> 32);
|
||||
|
||||
v = (uint64_t)a1 * (uint64_t)b1;
|
||||
*phigh += v;
|
||||
#if defined(DEBUG_MULDIV)
|
||||
printf("mul: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n",
|
||||
a, b, *phigh, *plow);
|
||||
#endif
|
||||
}
|
||||
|
||||
void do_mul64 (uint64_t *plow, uint64_t *phigh)
|
||||
{
|
||||
mul64(plow, phigh, T0, T1);
|
||||
}
|
||||
|
||||
static void imul64 (uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b)
|
||||
{
|
||||
int sa, sb;
|
||||
|
||||
sa = (a < 0);
|
||||
if (sa)
|
||||
a = -a;
|
||||
sb = (b < 0);
|
||||
if (sb)
|
||||
b = -b;
|
||||
mul64(plow, phigh, a, b);
|
||||
if (sa ^ sb) {
|
||||
neg128(plow, phigh);
|
||||
}
|
||||
}
|
||||
|
||||
void do_imul64 (uint64_t *plow, uint64_t *phigh)
|
||||
{
|
||||
imul64(plow, phigh, T0, T1);
|
||||
}
|
||||
#endif
|
||||
|
||||
void do_adde (void)
|
||||
{
|
||||
T2 = T0;
|
||||
|
@ -403,7 +330,7 @@ void do_mulldo (void)
|
|||
int64_t th;
|
||||
uint64_t tl;
|
||||
|
||||
do_imul64(&tl, &th);
|
||||
muls64(&tl, &th, T0, T1);
|
||||
if (likely(th == 0)) {
|
||||
xer_ov = 0;
|
||||
} else {
|
||||
|
|
|
@ -79,8 +79,6 @@ void do_sraw (void);
|
|||
#if defined(TARGET_PPC64)
|
||||
void do_adde_64 (void);
|
||||
void do_addmeo_64 (void);
|
||||
void do_imul64 (uint64_t *tl, uint64_t *th);
|
||||
void do_mul64 (uint64_t *tl, uint64_t *th);
|
||||
void do_divdo (void);
|
||||
void do_divduo (void);
|
||||
void do_mulldo (void);
|
||||
|
|
Loading…
Reference in a new issue