* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
-#include "host-utils.h"
+#include "qemu/host-utils.h"
#include "helper.h"
#include "helper_regs.h"
/* Fixed point operations helpers */
#if defined(TARGET_PPC64)
-/* multiply high word */
-uint64_t helper_mulhd(uint64_t arg1, uint64_t arg2)
-{
- uint64_t tl, th;
-
- muls64(&tl, &th, arg1, arg2);
- return th;
-}
-
-/* multiply high word unsigned */
-uint64_t helper_mulhdu(uint64_t arg1, uint64_t arg2)
-{
- uint64_t tl, th;
-
- mulu64(&tl, &th, arg1, arg2);
- return th;
-}
-
uint64_t helper_mulldo(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
{
int64_t th;
muls64(&tl, (uint64_t *)&th, arg1, arg2);
/* If th != 0 && th != -1, then we had an overflow */
if (likely((uint64_t)(th + 1) <= 1)) {
- env->xer &= ~(1 << XER_OV);
+ env->ov = 0;
} else {
- env->xer |= (1 << XER_OV) | (1 << XER_SO);
+ env->so = env->ov = 1;
}
return (int64_t)tl;
}
}
#endif
+target_ulong helper_cmpb(target_ulong rs, target_ulong rb)
+{
+ target_ulong mask = 0xff;
+ target_ulong ra = 0;
+ int i;
+
+ for (i = 0; i < sizeof(target_ulong); i++) {
+ if ((rs & mask) == (rb & mask)) {
+ ra |= mask;
+ }
+ mask <<= 8;
+ }
+ return ra;
+}
+
/* shift right arithmetic helper */
target_ulong helper_sraw(CPUPPCState *env, target_ulong value,
target_ulong shift)
shift &= 0x1f;
ret = (int32_t)value >> shift;
if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
- env->xer &= ~(1 << XER_CA);
+ env->ca = 0;
} else {
- env->xer |= (1 << XER_CA);
+ env->ca = 1;
}
} else {
ret = (int32_t)value;
- env->xer &= ~(1 << XER_CA);
+ env->ca = 0;
}
} else {
ret = (int32_t)value >> 31;
- if (ret) {
- env->xer |= (1 << XER_CA);
- } else {
- env->xer &= ~(1 << XER_CA);
- }
+ env->ca = (ret != 0);
}
return (target_long)ret;
}
shift &= 0x3f;
ret = (int64_t)value >> shift;
if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
- env->xer &= ~(1 << XER_CA);
+ env->ca = 0;
} else {
- env->xer |= (1 << XER_CA);
+ env->ca = 1;
}
} else {
ret = (int64_t)value;
- env->xer &= ~(1 << XER_CA);
+ env->ca = 0;
}
} else {
ret = (int64_t)value >> 63;
- if (ret) {
- env->xer |= (1 << XER_CA);
- } else {
- env->xer &= ~(1 << XER_CA);
- }
+ env->ca = (ret != 0);
}
return ret;
}
if (((int32_t)tmp == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
- env->xer |= (1 << XER_OV) | (1 << XER_SO);
+ env->so = env->ov = 1;
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
env->spr[SPR_MQ] = tmp % arg2;
tmp /= (int32_t)arg2;
if ((int32_t)tmp != tmp) {
- env->xer |= (1 << XER_OV) | (1 << XER_SO);
+ env->so = env->ov = 1;
} else {
- env->xer &= ~(1 << XER_OV);
+ env->ov = 0;
}
return tmp;
}
{
if (((int32_t)arg1 == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
(int32_t)arg2 == 0) {
- env->xer |= (1 << XER_OV) | (1 << XER_SO);
+ env->so = env->ov = 1;
env->spr[SPR_MQ] = 0;
return INT32_MIN;
} else {
- env->xer &= ~(1 << XER_OV);
+ env->ov = 0;
env->spr[SPR_MQ] = (int32_t)arg1 % (int32_t)arg2;
return (int32_t)arg1 / (int32_t)arg2;
}
for (index = ARRAY_SIZE(r->element)-1; index >= 0; index--)
#endif
-/* If X is a NaN, store the corresponding QNaN into RESULT. Otherwise,
- * execute the following block. */
-#define DO_HANDLE_NAN(result, x) \
- if (float32_is_any_nan(x)) { \
- CPU_FloatU __f; \
- __f.f = x; \
- __f.l = __f.l | (1 << 22); /* Set QNaN bit. */ \
- result = __f.f; \
- } else
-
-#define HANDLE_NAN1(result, x) \
- DO_HANDLE_NAN(result, x)
-#define HANDLE_NAN2(result, x, y) \
- DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y)
-#define HANDLE_NAN3(result, x, y, z) \
- DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y) DO_HANDLE_NAN(result, z)
-
/* Saturating arithmetic helpers. */
#define SATCVT(from, to, from_type, to_type, min, max) \
static inline to_type cvt##from##to(from_type x, int *sat) \
int i; \
\
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
- HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
- r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
- } \
+ r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
} \
}
VARITHFP(addfp, float32_add)
VARITHFP(subfp, float32_sub)
+VARITHFP(minfp, float32_min)
+VARITHFP(maxfp, float32_max)
#undef VARITHFP
+#define VARITHFPFMA(suffix, type) \
+ void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
+ ppc_avr_t *b, ppc_avr_t *c) \
+ { \
+ int i; \
+ for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
+ r->f[i] = float32_muladd(a->f[i], c->f[i], b->f[i], \
+ type, &env->vec_status); \
+ } \
+ }
+VARITHFPFMA(maddfp, 0);
+VARITHFPFMA(nmsubfp, float_muladd_negate_result | float_muladd_negate_c);
+#undef VARITHFPFMA
+
#define VARITHSAT_CASE(type, op, cvt, element) \
{ \
type result = (type)a->element[i] op (type)b->element[i]; \
VCT(sxs, cvtsdsw, s32)
#undef VCT
-void helper_vmaddfp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
- ppc_avr_t *c)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
- /* Need to do the computation in higher precision and round
- * once at the end. */
- float64 af, bf, cf, t;
-
- af = float32_to_float64(a->f[i], &env->vec_status);
- bf = float32_to_float64(b->f[i], &env->vec_status);
- cf = float32_to_float64(c->f[i], &env->vec_status);
- t = float64_mul(af, cf, &env->vec_status);
- t = float64_add(t, bf, &env->vec_status);
- r->f[i] = float64_to_float32(t, &env->vec_status);
- }
- }
-}
-
void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{
#undef VMINMAX_DO
#undef VMINMAX
-#define VMINMAXFP(suffix, rT, rF) \
- void helper_v##suffix(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, \
- ppc_avr_t *b) \
- { \
- int i; \
- \
- for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
- HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
- if (float32_lt_quiet(a->f[i], b->f[i], \
- &env->vec_status)) { \
- r->f[i] = rT->f[i]; \
- } else { \
- r->f[i] = rF->f[i]; \
- } \
- } \
- } \
- }
-VMINMAXFP(minfp, a, b)
-VMINMAXFP(maxfp, b, a)
-#undef VMINMAXFP
-
void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int i;
#undef VMUL_DO
#undef VMUL
-void helper_vnmsubfp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
- ppc_avr_t *b, ppc_avr_t *c)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
- /* Need to do the computation is higher precision and round
- * once at the end. */
- float64 af, bf, cf, t;
-
- af = float32_to_float64(a->f[i], &env->vec_status);
- bf = float32_to_float64(b->f[i], &env->vec_status);
- cf = float32_to_float64(c->f[i], &env->vec_status);
- t = float64_mul(af, cf, &env->vec_status);
- t = float64_sub(t, bf, &env->vec_status);
- t = float64_chs(t);
- r->f[i] = float64_to_float32(t, &env->vec_status);
- }
- }
-}
-
void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
ppc_avr_t *c)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
}
}
\
set_float_rounding_mode(rounding, &s); \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
- HANDLE_NAN1(r->f[i], b->f[i]) { \
- r->f[i] = float32_round_to_int (b->f[i], &s); \
- } \
+ r->f[i] = float32_round_to_int (b->f[i], &s); \
} \
}
VRFI(n, float_round_nearest_even)
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- float32 t = float32_sqrt(b->f[i], &env->vec_status);
+ float32 t = float32_sqrt(b->f[i], &env->vec_status);
- r->f[i] = float32_div(float32_one, t, &env->vec_status);
- }
+ r->f[i] = float32_div(float32_one, t, &env->vec_status);
}
}
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_exp2(b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_exp2(b->f[i], &env->vec_status);
}
}
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_log2(b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_log2(b->f[i], &env->vec_status);
}
}
#undef UPKHI
#undef UPKLO
-#undef DO_HANDLE_NAN
-#undef HANDLE_NAN1
-#undef HANDLE_NAN2
-#undef HANDLE_NAN3
#undef VECTOR_FOR_INORDER_I
#undef HI_IDX
#undef LO_IDX
/*****************************************************************************/
/* SPE extension helpers */
/* Use a table to make this quicker */
-static uint8_t hbrev[16] = {
+static const uint8_t hbrev[16] = {
0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE,
0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF,
};
projects / qemu.git / blobdiff