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target/i386: Destructive vector helpers for AVX 

These helpers need to take special care to avoid overwriting source values
before the wole result has been calculated.  Currently they use a dummy
Reg typed variable to store the result then assign the whole register.
This will cause 128 bit operations to corrupt the upper half of the register,
so replace it with explicit temporaries and element assignments.

Signed-off-by: Paul Brook <paul@nowt.org>
Message-Id: <20220424220204.2493824-14-paul@nowt.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Paul Brook 2022-04-24 23:01:35 +01:00 committed by Paolo Bonzini
parent e894bae8cb
commit d45b0de63d
1 changed files with 262 additions and 294 deletions
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556
target/i386/ops_sse.h
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@ -41,6 +41,7 @@
#endif
#define LANE_WIDTH (SHIFT ? 16 : 8)
#define PACK_WIDTH (LANE_WIDTH / 2)
/*
* Copy the relevant parts of a Reg value around. In the case where
@ -474,71 +475,81 @@ void glue(helper_movq_mm_T0, SUFFIX)(Reg *d, uint64_t val)
}
#endif
#define SHUFFLE4(F, a, b, offset) do { \
r0 = a->F((order & 3) + offset); \
r1 = a->F(((order >> 2) & 3) + offset); \
r2 = b->F(((order >> 4) & 3) + offset); \
r3 = b->F(((order >> 6) & 3) + offset); \
d->F(offset) = r0; \
d->F(offset + 1) = r1; \
d->F(offset + 2) = r2; \
d->F(offset + 3) = r3; \
} while (0)
#if SHIFT == 0
void glue(helper_pshufw, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
uint16_t r0, r1, r2, r3;
r.W(0) = s->W(order & 3);
r.W(1) = s->W((order >> 2) & 3);
r.W(2) = s->W((order >> 4) & 3);
r.W(3) = s->W((order >> 6) & 3);
MOVE(*d, r);
SHUFFLE4(W, s, s, 0);
}
#else
void glue(helper_shufps, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
Reg *v = d;
uint32_t r0, r1, r2, r3;
int i;
r.L(0) = d->L(order & 3);
r.L(1) = d->L((order >> 2) & 3);
r.L(2) = s->L((order >> 4) & 3);
r.L(3) = s->L((order >> 6) & 3);
MOVE(*d, r);
for (i = 0; i < 2 << SHIFT; i += 4) {
SHUFFLE4(L, v, s, i);
}
}
void glue(helper_shufpd, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
Reg *v = d;
uint64_t r0, r1;
int i;
r.Q(0) = d->Q(order & 1);
r.Q(1) = s->Q((order >> 1) & 1);
MOVE(*d, r);
for (i = 0; i < 1 << SHIFT; i += 2) {
r0 = v->Q(((order & 1) & 1) + i);
r1 = s->Q(((order >> 1) & 1) + i);
d->Q(i) = r0;
d->Q(i + 1) = r1;
order >>= 2;
}
}
void glue(helper_pshufd, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
uint32_t r0, r1, r2, r3;
int i;
r.L(0) = s->L(order & 3);
r.L(1) = s->L((order >> 2) & 3);
r.L(2) = s->L((order >> 4) & 3);
r.L(3) = s->L((order >> 6) & 3);
MOVE(*d, r);
for (i = 0; i < 2 << SHIFT; i += 4) {
SHUFFLE4(L, s, s, i);
}
}
void glue(helper_pshuflw, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
uint16_t r0, r1, r2, r3;
int i, j;
r.W(0) = s->W(order & 3);
r.W(1) = s->W((order >> 2) & 3);
r.W(2) = s->W((order >> 4) & 3);
r.W(3) = s->W((order >> 6) & 3);
r.Q(1) = s->Q(1);
MOVE(*d, r);
for (i = 0, j = 1; j < 1 << SHIFT; i += 8, j += 2) {
SHUFFLE4(W, s, s, i);
d->Q(j) = s->Q(j);
}
}
void glue(helper_pshufhw, SUFFIX)(Reg *d, Reg *s, int order)
{
Reg r;
uint16_t r0, r1, r2, r3;
int i, j;
r.Q(0) = s->Q(0);
r.W(4) = s->W(4 + (order & 3));
r.W(5) = s->W(4 + ((order >> 2) & 3));
r.W(6) = s->W(4 + ((order >> 4) & 3));
r.W(7) = s->W(4 + ((order >> 6) & 3));
MOVE(*d, r);
for (i = 4, j = 0; j < 1 << SHIFT; i += 8, j += 2) {
d->Q(j) = s->Q(j);
SHUFFLE4(W, s, s, i);
}
}
#endif
@ -1091,156 +1102,132 @@ uint32_t glue(helper_pmovmskb, SUFFIX)(CPUX86State *env, Reg *s)
return val;
}
void glue(helper_packsswb, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.B(0) = satsb((int16_t)d->W(0));
r.B(1) = satsb((int16_t)d->W(1));
r.B(2) = satsb((int16_t)d->W(2));
r.B(3) = satsb((int16_t)d->W(3));
#if SHIFT == 1
r.B(4) = satsb((int16_t)d->W(4));
r.B(5) = satsb((int16_t)d->W(5));
r.B(6) = satsb((int16_t)d->W(6));
r.B(7) = satsb((int16_t)d->W(7));
#endif
r.B((4 << SHIFT) + 0) = satsb((int16_t)s->W(0));
r.B((4 << SHIFT) + 1) = satsb((int16_t)s->W(1));
r.B((4 << SHIFT) + 2) = satsb((int16_t)s->W(2));
r.B((4 << SHIFT) + 3) = satsb((int16_t)s->W(3));
#if SHIFT == 1
r.B(12) = satsb((int16_t)s->W(4));
r.B(13) = satsb((int16_t)s->W(5));
r.B(14) = satsb((int16_t)s->W(6));
r.B(15) = satsb((int16_t)s->W(7));
#endif
MOVE(*d, r);
#define PACK_HELPER_B(name, F) \
void glue(helper_pack ## name, SUFFIX)(CPUX86State *env, \
Reg *d, Reg *s) \
{ \
Reg *v = d; \
uint8_t r[PACK_WIDTH * 2]; \
int j, k; \
for (j = 0; j < 4 << SHIFT; j += PACK_WIDTH) { \
for (k = 0; k < PACK_WIDTH; k++) { \
r[k] = F((int16_t)v->W(j + k)); \
} \
for (k = 0; k < PACK_WIDTH; k++) { \
r[PACK_WIDTH + k] = F((int16_t)s->W(j + k)); \
} \
for (k = 0; k < PACK_WIDTH * 2; k++) { \
d->B(2 * j + k) = r[k]; \
} \
} \
}
void glue(helper_packuswb, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.B(0) = satub((int16_t)d->W(0));
r.B(1) = satub((int16_t)d->W(1));
r.B(2) = satub((int16_t)d->W(2));
r.B(3) = satub((int16_t)d->W(3));
#if SHIFT == 1
r.B(4) = satub((int16_t)d->W(4));
r.B(5) = satub((int16_t)d->W(5));
r.B(6) = satub((int16_t)d->W(6));
r.B(7) = satub((int16_t)d->W(7));
#endif
r.B((4 << SHIFT) + 0) = satub((int16_t)s->W(0));
r.B((4 << SHIFT) + 1) = satub((int16_t)s->W(1));
r.B((4 << SHIFT) + 2) = satub((int16_t)s->W(2));
r.B((4 << SHIFT) + 3) = satub((int16_t)s->W(3));
#if SHIFT == 1
r.B(12) = satub((int16_t)s->W(4));
r.B(13) = satub((int16_t)s->W(5));
r.B(14) = satub((int16_t)s->W(6));
r.B(15) = satub((int16_t)s->W(7));
#endif
MOVE(*d, r);
}
PACK_HELPER_B(sswb, satsb)
PACK_HELPER_B(uswb, satub)
void glue(helper_packssdw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
Reg *v = d;
uint16_t r[PACK_WIDTH];
int j, k;
r.W(0) = satsw(d->L(0));
r.W(1) = satsw(d->L(1));
#if SHIFT == 1
r.W(2) = satsw(d->L(2));
r.W(3) = satsw(d->L(3));
#endif
r.W((2 << SHIFT) + 0) = satsw(s->L(0));
r.W((2 << SHIFT) + 1) = satsw(s->L(1));
#if SHIFT == 1
r.W(6) = satsw(s->L(2));
r.W(7) = satsw(s->L(3));
#endif
MOVE(*d, r);
for (j = 0; j < 2 << SHIFT; j += PACK_WIDTH / 2) {
for (k = 0; k < PACK_WIDTH / 2; k++) {
r[k] = satsw(v->L(j + k));
}
for (k = 0; k < PACK_WIDTH / 2; k++) {
r[PACK_WIDTH / 2 + k] = satsw(s->L(j + k));
}
for (k = 0; k < PACK_WIDTH; k++) {
d->W(2 * j + k) = r[k];
}
}
}
#define UNPCK_OP(base_name, base) \
\
void glue(helper_punpck ## base_name ## bw, SUFFIX)(CPUX86State *env,\
Reg *d, Reg *s) \
Reg *d, Reg *s) \
{ \
Reg r; \
Reg *v = d; \
uint8_t r[PACK_WIDTH * 2]; \
int j, i; \
\
r.B(0) = d->B((base << (SHIFT + 2)) + 0); \
r.B(1) = s->B((base << (SHIFT + 2)) + 0); \
r.B(2) = d->B((base << (SHIFT + 2)) + 1); \
r.B(3) = s->B((base << (SHIFT + 2)) + 1); \
r.B(4) = d->B((base << (SHIFT + 2)) + 2); \
r.B(5) = s->B((base << (SHIFT + 2)) + 2); \
r.B(6) = d->B((base << (SHIFT + 2)) + 3); \
r.B(7) = s->B((base << (SHIFT + 2)) + 3); \
XMM_ONLY( \
r.B(8) = d->B((base << (SHIFT + 2)) + 4); \
r.B(9) = s->B((base << (SHIFT + 2)) + 4); \
r.B(10) = d->B((base << (SHIFT + 2)) + 5); \
r.B(11) = s->B((base << (SHIFT + 2)) + 5); \
r.B(12) = d->B((base << (SHIFT + 2)) + 6); \
r.B(13) = s->B((base << (SHIFT + 2)) + 6); \
r.B(14) = d->B((base << (SHIFT + 2)) + 7); \
r.B(15) = s->B((base << (SHIFT + 2)) + 7); \
) \
MOVE(*d, r); \
for (j = 0; j < 8 << SHIFT; ) { \
int k = j + base * PACK_WIDTH; \
for (i = 0; i < PACK_WIDTH; i++) { \
r[2 * i] = v->B(k + i); \
r[2 * i + 1] = s->B(k + i); \
} \
for (i = 0; i < PACK_WIDTH * 2; i++, j++) { \
d->B(j) = r[i]; \
} \
} \
} \
\
void glue(helper_punpck ## base_name ## wd, SUFFIX)(CPUX86State *env,\
Reg *d, Reg *s) \
Reg *d, Reg *s) \
{ \
Reg r; \
Reg *v = d; \
uint16_t r[PACK_WIDTH]; \
int j, i; \
\
r.W(0) = d->W((base << (SHIFT + 1)) + 0); \
r.W(1) = s->W((base << (SHIFT + 1)) + 0); \
r.W(2) = d->W((base << (SHIFT + 1)) + 1); \
r.W(3) = s->W((base << (SHIFT + 1)) + 1); \
XMM_ONLY( \
r.W(4) = d->W((base << (SHIFT + 1)) + 2); \
r.W(5) = s->W((base << (SHIFT + 1)) + 2); \
r.W(6) = d->W((base << (SHIFT + 1)) + 3); \
r.W(7) = s->W((base << (SHIFT + 1)) + 3); \
) \
MOVE(*d, r); \
for (j = 0; j < 4 << SHIFT; ) { \
int k = j + base * PACK_WIDTH / 2; \
for (i = 0; i < PACK_WIDTH / 2; i++) { \
r[2 * i] = v->W(k + i); \
r[2 * i + 1] = s->W(k + i); \
} \
for (i = 0; i < PACK_WIDTH; i++, j++) { \
d->W(j) = r[i]; \
} \
} \
} \
\
void glue(helper_punpck ## base_name ## dq, SUFFIX)(CPUX86State *env,\
Reg *d, Reg *s) \
Reg *d, Reg *s) \
{ \
Reg r; \
Reg *v = d; \
uint32_t r[PACK_WIDTH / 2]; \
int j, i; \
\
r.L(0) = d->L((base << SHIFT) + 0); \
r.L(1) = s->L((base << SHIFT) + 0); \
XMM_ONLY( \
r.L(2) = d->L((base << SHIFT) + 1); \
r.L(3) = s->L((base << SHIFT) + 1); \
) \
MOVE(*d, r); \
for (j = 0; j < 2 << SHIFT; ) { \
int k = j + base * PACK_WIDTH / 4; \
for (i = 0; i < PACK_WIDTH / 4; i++) { \
r[2 * i] = v->L(k + i); \
r[2 * i + 1] = s->L(k + i); \
} \
for (i = 0; i < PACK_WIDTH / 2; i++, j++) { \
d->L(j) = r[i]; \
} \
} \
} \
\
XMM_ONLY( \
void glue(helper_punpck ## base_name ## qdq, SUFFIX)(CPUX86State \
*env, \
Reg *d, \
Reg *s) \
void glue(helper_punpck ## base_name ## qdq, SUFFIX)( \
CPUX86State *env, Reg *d, Reg *s) \
{ \
Reg r; \
Reg *v = d; \
uint64_t r[2]; \
int i; \
\
r.Q(0) = d->Q(base); \
r.Q(1) = s->Q(base); \
MOVE(*d, r); \
for (i = 0; i < 1 << SHIFT; i += 2) { \
r[0] = v->Q(base + i); \
r[1] = s->Q(base + i); \
d->Q(i) = r[0]; \
d->Q(i + 1) = r[1]; \
} \
} \
)
UNPCK_OP(l, 0)
UNPCK_OP(h, 1)
#undef PACK_WIDTH
#undef PACK_HELPER_B
#undef UNPCK_OP
/* 3DNow! float ops */
#if SHIFT == 0
void helper_pi2fd(CPUX86State *env, MMXReg *d, MMXReg *s)
@ -1393,122 +1380,86 @@ void helper_pswapd(CPUX86State *env, MMXReg *d, MMXReg *s)
/* SSSE3 op helpers */
void glue(helper_pshufb, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg *v = d;
int i;
Reg r;
#if SHIFT == 0
uint8_t r[8];
for (i = 0; i < (8 << SHIFT); i++) {
r.B(i) = (s->B(i) & 0x80) ? 0 : (d->B(s->B(i) & ((8 << SHIFT) - 1)));
for (i = 0; i < 8; i++) {
r[i] = (s->B(i) & 0x80) ? 0 : (v->B(s->B(i) & 7));
}
for (i = 0; i < 8; i++) {
d->B(i) = r[i];
}
#else
uint8_t r[8 << SHIFT];
MOVE(*d, r);
}
void glue(helper_phaddw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.W(0) = (int16_t)d->W(0) + (int16_t)d->W(1);
r.W(1) = (int16_t)d->W(2) + (int16_t)d->W(3);
XMM_ONLY(r.W(2) = (int16_t)d->W(4) + (int16_t)d->W(5));
XMM_ONLY(r.W(3) = (int16_t)d->W(6) + (int16_t)d->W(7));
r.W((2 << SHIFT) + 0) = (int16_t)s->W(0) + (int16_t)s->W(1);
r.W((2 << SHIFT) + 1) = (int16_t)s->W(2) + (int16_t)s->W(3);
XMM_ONLY(r.W(6) = (int16_t)s->W(4) + (int16_t)s->W(5));
XMM_ONLY(r.W(7) = (int16_t)s->W(6) + (int16_t)s->W(7));
MOVE(*d, r);
}
void glue(helper_phaddd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.L(0) = (int32_t)d->L(0) + (int32_t)d->L(1);
XMM_ONLY(r.L(1) = (int32_t)d->L(2) + (int32_t)d->L(3));
r.L((1 << SHIFT) + 0) = (int32_t)s->L(0) + (int32_t)s->L(1);
XMM_ONLY(r.L(3) = (int32_t)s->L(2) + (int32_t)s->L(3));
MOVE(*d, r);
}
void glue(helper_phaddsw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.W(0) = satsw((int16_t)d->W(0) + (int16_t)d->W(1));
r.W(1) = satsw((int16_t)d->W(2) + (int16_t)d->W(3));
XMM_ONLY(r.W(2) = satsw((int16_t)d->W(4) + (int16_t)d->W(5)));
XMM_ONLY(r.W(3) = satsw((int16_t)d->W(6) + (int16_t)d->W(7)));
r.W((2 << SHIFT) + 0) = satsw((int16_t)s->W(0) + (int16_t)s->W(1));
r.W((2 << SHIFT) + 1) = satsw((int16_t)s->W(2) + (int16_t)s->W(3));
XMM_ONLY(r.W(6) = satsw((int16_t)s->W(4) + (int16_t)s->W(5)));
XMM_ONLY(r.W(7) = satsw((int16_t)s->W(6) + (int16_t)s->W(7)));
MOVE(*d, r);
}
void glue(helper_pmaddubsw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
d->W(0) = satsw((int8_t)s->B(0) * (uint8_t)d->B(0) +
(int8_t)s->B(1) * (uint8_t)d->B(1));
d->W(1) = satsw((int8_t)s->B(2) * (uint8_t)d->B(2) +
(int8_t)s->B(3) * (uint8_t)d->B(3));
d->W(2) = satsw((int8_t)s->B(4) * (uint8_t)d->B(4) +
(int8_t)s->B(5) * (uint8_t)d->B(5));
d->W(3) = satsw((int8_t)s->B(6) * (uint8_t)d->B(6) +
(int8_t)s->B(7) * (uint8_t)d->B(7));
#if SHIFT == 1
d->W(4) = satsw((int8_t)s->B(8) * (uint8_t)d->B(8) +
(int8_t)s->B(9) * (uint8_t)d->B(9));
d->W(5) = satsw((int8_t)s->B(10) * (uint8_t)d->B(10) +
(int8_t)s->B(11) * (uint8_t)d->B(11));
d->W(6) = satsw((int8_t)s->B(12) * (uint8_t)d->B(12) +
(int8_t)s->B(13) * (uint8_t)d->B(13));
d->W(7) = satsw((int8_t)s->B(14) * (uint8_t)d->B(14) +
(int8_t)s->B(15) * (uint8_t)d->B(15));
for (i = 0; i < 8 << SHIFT; i++) {
int j = i & ~0xf;
r[i] = (s->B(i) & 0x80) ? 0 : v->B(j | (s->B(i) & 0xf));
}
for (i = 0; i < 8 << SHIFT; i++) {
d->B(i) = r[i];
}
#endif
}
void glue(helper_phsubw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.W(0) = (int16_t)d->W(0) - (int16_t)d->W(1);
r.W(1) = (int16_t)d->W(2) - (int16_t)d->W(3);
XMM_ONLY(r.W(2) = (int16_t)d->W(4) - (int16_t)d->W(5));
XMM_ONLY(r.W(3) = (int16_t)d->W(6) - (int16_t)d->W(7));
r.W((2 << SHIFT) + 0) = (int16_t)s->W(0) - (int16_t)s->W(1);
r.W((2 << SHIFT) + 1) = (int16_t)s->W(2) - (int16_t)s->W(3);
XMM_ONLY(r.W(6) = (int16_t)s->W(4) - (int16_t)s->W(5));
XMM_ONLY(r.W(7) = (int16_t)s->W(6) - (int16_t)s->W(7));
MOVE(*d, r);
#define SSE_HELPER_HW(name, F) \
void glue(helper_ ## name, SUFFIX)(CPUX86State *env, Reg *d, Reg *s) \
{ \
Reg *v = d; \
uint16_t r[4 << SHIFT]; \
int i, j, k; \
for (k = 0; k < 4 << SHIFT; k += LANE_WIDTH / 2) { \
for (i = j = 0; j < LANE_WIDTH / 2; i++, j += 2) { \
r[i + k] = F(v->W(j + k), v->W(j + k + 1)); \
} \
for (j = 0; j < LANE_WIDTH / 2; i++, j += 2) { \
r[i + k] = F(s->W(j + k), s->W(j + k + 1)); \
} \
} \
for (i = 0; i < 4 << SHIFT; i++) { \
d->W(i) = r[i]; \
} \
}
void glue(helper_phsubd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
r.L(0) = (int32_t)d->L(0) - (int32_t)d->L(1);
XMM_ONLY(r.L(1) = (int32_t)d->L(2) - (int32_t)d->L(3));
r.L((1 << SHIFT) + 0) = (int32_t)s->L(0) - (int32_t)s->L(1);
XMM_ONLY(r.L(3) = (int32_t)s->L(2) - (int32_t)s->L(3));
MOVE(*d, r);
#define SSE_HELPER_HL(name, F) \
void glue(helper_ ## name, SUFFIX)(CPUX86State *env, Reg *d, Reg *s) \
{ \
Reg *v = d; \
uint32_t r[2 << SHIFT]; \
int i, j, k; \
for (k = 0; k < 2 << SHIFT; k += LANE_WIDTH / 4) { \
for (i = j = 0; j < LANE_WIDTH / 4; i++, j += 2) { \
r[i + k] = F(v->L(j + k), v->L(j + k + 1)); \
} \
for (j = 0; j < LANE_WIDTH / 4; i++, j += 2) { \
r[i + k] = F(s->L(j + k), s->L(j + k + 1)); \
} \
} \
for (i = 0; i < 2 << SHIFT; i++) { \
d->L(i) = r[i]; \
} \
}
void glue(helper_phsubsw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
SSE_HELPER_HW(phaddw, FADD)
SSE_HELPER_HW(phsubw, FSUB)
SSE_HELPER_HW(phaddsw, FADDSW)
SSE_HELPER_HW(phsubsw, FSUBSW)
SSE_HELPER_HL(phaddd, FADD)
SSE_HELPER_HL(phsubd, FSUB)
r.W(0) = satsw((int16_t)d->W(0) - (int16_t)d->W(1));
r.W(1) = satsw((int16_t)d->W(2) - (int16_t)d->W(3));
XMM_ONLY(r.W(2) = satsw((int16_t)d->W(4) - (int16_t)d->W(5)));
XMM_ONLY(r.W(3) = satsw((int16_t)d->W(6) - (int16_t)d->W(7)));
r.W((2 << SHIFT) + 0) = satsw((int16_t)s->W(0) - (int16_t)s->W(1));
r.W((2 << SHIFT) + 1) = satsw((int16_t)s->W(2) - (int16_t)s->W(3));
XMM_ONLY(r.W(6) = satsw((int16_t)s->W(4) - (int16_t)s->W(5)));
XMM_ONLY(r.W(7) = satsw((int16_t)s->W(6) - (int16_t)s->W(7)));
MOVE(*d, r);
#undef SSE_HELPER_HW
#undef SSE_HELPER_HL
void glue(helper_pmaddubsw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg *v = d;
int i;
for (i = 0; i < 4 << SHIFT; i++) {
d->W(i) = satsw((int8_t)s->B(i * 2) * (uint8_t)v->B(i * 2) +
(int8_t)s->B(i * 2 + 1) * (uint8_t)v->B(i * 2 + 1));
}
}
#define FABSB(x) (x > INT8_MAX ? -(int8_t)x : x)
@ -1531,32 +1482,38 @@ SSE_HELPER_L(helper_psignd, FSIGNL)
void glue(helper_palignr, SUFFIX)(CPUX86State *env, Reg *d, Reg *s,
int32_t shift)
{
Reg r;
Reg *v = d;
int i;
/* XXX could be checked during translation */
if (shift >= (16 << SHIFT)) {
r.Q(0) = 0;
XMM_ONLY(r.Q(1) = 0);
if (shift >= (SHIFT ? 32 : 16)) {
for (i = 0; i < (1 << SHIFT); i++) {
d->Q(i) = 0;
}
} else {
shift <<= 3;
#define SHR(v, i) (i < 64 && i > -64 ? i > 0 ? v >> (i) : (v << -(i)) : 0)
#if SHIFT == 0
r.Q(0) = SHR(s->Q(0), shift - 0) |
SHR(d->Q(0), shift - 64);
d->Q(0) = SHR(s->Q(0), shift - 0) |
SHR(v->Q(0), shift - 64);
#else
r.Q(0) = SHR(s->Q(0), shift - 0) |
SHR(s->Q(1), shift - 64) |
SHR(d->Q(0), shift - 128) |
SHR(d->Q(1), shift - 192);
r.Q(1) = SHR(s->Q(0), shift + 64) |
SHR(s->Q(1), shift - 0) |
SHR(d->Q(0), shift - 64) |
SHR(d->Q(1), shift - 128);
for (i = 0; i < (1 << SHIFT); i += 2) {
uint64_t r0, r1;
r0 = SHR(s->Q(i), shift - 0) |
SHR(s->Q(i + 1), shift - 64) |
SHR(v->Q(i), shift - 128) |
SHR(v->Q(i + 1), shift - 192);
r1 = SHR(s->Q(i), shift + 64) |
SHR(s->Q(i + 1), shift - 0) |
SHR(v->Q(i), shift - 64) |
SHR(v->Q(i + 1), shift - 128);
d->Q(i) = r0;
d->Q(i + 1) = r1;
}
#endif
#undef SHR
}
MOVE(*d, r);
}
#define XMM0 (env->xmm_regs[0])
@ -1681,17 +1638,23 @@ SSE_HELPER_Q(helper_pcmpeqq, FCMPEQQ)
void glue(helper_packusdw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
Reg r;
Reg *v = d;
uint16_t r[8];
int i, j, k;
r.W(0) = satuw((int32_t) d->L(0));
r.W(1) = satuw((int32_t) d->L(1));
r.W(2) = satuw((int32_t) d->L(2));
r.W(3) = satuw((int32_t) d->L(3));
r.W(4) = satuw((int32_t) s->L(0));
r.W(5) = satuw((int32_t) s->L(1));
r.W(6) = satuw((int32_t) s->L(2));
r.W(7) = satuw((int32_t) s->L(3));
MOVE(*d, r);
for (i = 0, j = 0; i <= 2 << SHIFT; i += 8, j += 4) {
r[0] = satuw(v->L(j));
r[1] = satuw(v->L(j + 1));
r[2] = satuw(v->L(j + 2));
r[3] = satuw(v->L(j + 3));
r[4] = satuw(s->L(j));
r[5] = satuw(s->L(j + 1));
r[6] = satuw(s->L(j + 2));
r[7] = satuw(s->L(j + 3));
for (k = 0; k < 8; k++) {
d->W(i + k) = r[k];
}
}
}
#define FMINSB(d, s) MIN((int8_t)d, (int8_t)s)
@ -1947,20 +1910,25 @@ void glue(helper_dppd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s, uint32_t mask)
void glue(helper_mpsadbw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s,
uint32_t offset)
{
int s0 = (offset & 3) << 2;
int d0 = (offset & 4) << 0;
int i;
Reg r;
Reg *v = d;
int i, j;
uint16_t r[8];
for (i = 0; i < 8; i++, d0++) {
r.W(i) = 0;
r.W(i) += abs1(d->B(d0 + 0) - s->B(s0 + 0));
r.W(i) += abs1(d->B(d0 + 1) - s->B(s0 + 1));
r.W(i) += abs1(d->B(d0 + 2) - s->B(s0 + 2));
r.W(i) += abs1(d->B(d0 + 3) - s->B(s0 + 3));
for (j = 0; j < 4 << SHIFT; ) {
int s0 = (j * 2) + ((offset & 3) << 2);
int d0 = (j * 2) + ((offset & 4) << 0);
for (i = 0; i < LANE_WIDTH / 2; i++, d0++) {
r[i] = 0;
r[i] += abs1(v->B(d0 + 0) - s->B(s0 + 0));
r[i] += abs1(v->B(d0 + 1) - s->B(s0 + 1));
r[i] += abs1(v->B(d0 + 2) - s->B(s0 + 2));
r[i] += abs1(v->B(d0 + 3) - s->B(s0 + 3));
}
for (i = 0; i < LANE_WIDTH / 2; i++, j++) {
d->W(j) = r[i];
}
offset >>= 3;
}
MOVE(*d, r);
}
/* SSE4.2 op helpers */