From: Paul Brook <p...@nowt.org>
Rewrite the vector shift helpers in preperation for AVX support (3 operand
form and 256 bit vectors).
For now keep the existing two operand interface.
No functional changes to existing helpers.
Signed-off-by: Paul Brook <p...@nowt.org>
Message-Id: <20220424220204.2493824-11-p...@nowt.org>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
target/i386/ops_sse.h | 221 ++++++++++++++++++------------------------
1 file changed, 96 insertions(+), 125 deletions(-)
diff --git a/target/i386/ops_sse.h b/target/i386/ops_sse.h
index b12b271fcd..a1d3fbc482 100644
--- a/target/i386/ops_sse.h
+++ b/target/i386/ops_sse.h
@@ -56,195 +56,166 @@
#define MOVE(d, r) memcpy(&(d).B(0), &(r).B(0), SIZE)
#endif
-void glue(helper_psrlw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
-{
- int shift;
+#if SHIFT == 0
+#define FPSRL(x, c) ((x) >> shift)
+#define FPSRAW(x, c) ((int16_t)(x) >> shift)
+#define FPSRAL(x, c) ((int32_t)(x) >> shift)
+#define FPSLL(x, c) ((x) << shift)
+#endif
- if (s->Q(0) > 15) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
+void glue(helper_psrlw, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
+{
+ Reg *s = d;
+ int shift;
+ if (c->Q(0) > 15) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
} else {
- shift = s->B(0);
- d->W(0) >>= shift;
- d->W(1) >>= shift;
- d->W(2) >>= shift;
- d->W(3) >>= shift;
-#if SHIFT == 1
- d->W(4) >>= shift;
- d->W(5) >>= shift;
- d->W(6) >>= shift;
- d->W(7) >>= shift;
-#endif
+ shift = c->B(0);
+ for (int i = 0; i < 4 << SHIFT; i++) {
+ d->W(i) = FPSRL(s->W(i), shift);
+ }
}
}
-void glue(helper_psraw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_psllw, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
+ if (c->Q(0) > 15) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
+ } else {
+ shift = c->B(0);
+ for (int i = 0; i < 4 << SHIFT; i++) {
+ d->W(i) = FPSLL(s->W(i), shift);
+ }
+ }
+}
- if (s->Q(0) > 15) {
+void glue(helper_psraw, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
+{
+ Reg *s = d;
+ int shift;
+ if (c->Q(0) > 15) {
shift = 15;
} else {
- shift = s->B(0);
+ shift = c->B(0);
+ }
+ for (int i = 0; i < 4 << SHIFT; i++) {
+ d->W(i) = FPSRAW(s->W(i), shift);
}
- d->W(0) = (int16_t)d->W(0) >> shift;
- d->W(1) = (int16_t)d->W(1) >> shift;
- d->W(2) = (int16_t)d->W(2) >> shift;
- d->W(3) = (int16_t)d->W(3) >> shift;
-#if SHIFT == 1
- d->W(4) = (int16_t)d->W(4) >> shift;
- d->W(5) = (int16_t)d->W(5) >> shift;
- d->W(6) = (int16_t)d->W(6) >> shift;
- d->W(7) = (int16_t)d->W(7) >> shift;
-#endif
}
-void glue(helper_psllw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_psrld, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
-
- if (s->Q(0) > 15) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
+ if (c->Q(0) > 31) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
} else {
- shift = s->B(0);
- d->W(0) <<= shift;
- d->W(1) <<= shift;
- d->W(2) <<= shift;
- d->W(3) <<= shift;
-#if SHIFT == 1
- d->W(4) <<= shift;
- d->W(5) <<= shift;
- d->W(6) <<= shift;
- d->W(7) <<= shift;
-#endif
+ shift = c->B(0);
+ for (int i = 0; i < 2 << SHIFT; i++) {
+ d->L(i) = FPSRL(s->L(i), shift);
+ }
}
}
-void glue(helper_psrld, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_pslld, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
-
- if (s->Q(0) > 31) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
+ if (c->Q(0) > 31) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
} else {
- shift = s->B(0);
- d->L(0) >>= shift;
- d->L(1) >>= shift;
-#if SHIFT == 1
- d->L(2) >>= shift;
- d->L(3) >>= shift;
-#endif
+ shift = c->B(0);
+ for (int i = 0; i < 2 << SHIFT; i++) {
+ d->L(i) = FPSLL(s->L(i), shift);
+ }
}
}
-void glue(helper_psrad, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_psrad, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
-
- if (s->Q(0) > 31) {
+ if (c->Q(0) > 31) {
shift = 31;
} else {
- shift = s->B(0);
+ shift = c->B(0);
+ }
+ for (int i = 0; i < 2 << SHIFT; i++) {
+ d->L(i) = FPSRAL(s->L(i), shift);
}
- d->L(0) = (int32_t)d->L(0) >> shift;
- d->L(1) = (int32_t)d->L(1) >> shift;
-#if SHIFT == 1
- d->L(2) = (int32_t)d->L(2) >> shift;
- d->L(3) = (int32_t)d->L(3) >> shift;
-#endif
}
-void glue(helper_pslld, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_psrlq, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
-
- if (s->Q(0) > 31) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
+ if (c->Q(0) > 63) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
} else {
- shift = s->B(0);
- d->L(0) <<= shift;
- d->L(1) <<= shift;
-#if SHIFT == 1
- d->L(2) <<= shift;
- d->L(3) <<= shift;
-#endif
+ shift = c->B(0);
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = FPSRL(s->Q(i), shift);
+ }
}
}
-void glue(helper_psrlq, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_psllq, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift;
-
- if (s->Q(0) > 63) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
+ if (c->Q(0) > 63) {
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = 0;
+ }
} else {
- shift = s->B(0);
- d->Q(0) >>= shift;
-#if SHIFT == 1
- d->Q(1) >>= shift;
-#endif
+ shift = c->B(0);
+ for (int i = 0; i < 1 << SHIFT; i++) {
+ d->Q(i) = FPSLL(s->Q(i), shift);
+ }
}
}
-void glue(helper_psllq, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
-{
- int shift;
-
- if (s->Q(0) > 63) {
- d->Q(0) = 0;
-#if SHIFT == 1
- d->Q(1) = 0;
-#endif
- } else {
- shift = s->B(0);
- d->Q(0) <<= shift;
-#if SHIFT == 1
- d->Q(1) <<= shift;
-#endif
- }
-}
-
-#if SHIFT == 1
-void glue(helper_psrldq, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+#if SHIFT >= 1
+void glue(helper_psrldq, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift, i;
- shift = s->L(0);
+ shift = c->L(0);
if (shift > 16) {
shift = 16;
}
for (i = 0; i < 16 - shift; i++) {
- d->B(i) = d->B(i + shift);
+ d->B(i) = s->B(i + shift);
}
for (i = 16 - shift; i < 16; i++) {
d->B(i) = 0;
}
}
-void glue(helper_pslldq, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
+void glue(helper_pslldq, SUFFIX)(CPUX86State *env, Reg *d, Reg *c)
{
+ Reg *s = d;
int shift, i;
- shift = s->L(0);
+ shift = c->L(0);
if (shift > 16) {
shift = 16;
}
for (i = 15; i >= shift; i--) {
- d->B(i) = d->B(i - shift);
+ d->B(i) = s->B(i - shift);
}
for (i = 0; i < shift; i++) {
d->B(i) = 0;
--
2.37.1
