aboutsummaryrefslogtreecommitdiff
path: root/target/sparc/vis_helper.c
diff options
context:
space:
mode:
Diffstat (limited to 'target/sparc/vis_helper.c')
-rw-r--r--target/sparc/vis_helper.c490
1 files changed, 490 insertions, 0 deletions
diff --git a/target/sparc/vis_helper.c b/target/sparc/vis_helper.c
new file mode 100644
index 0000000000..8a9b763d0b
--- /dev/null
+++ b/target/sparc/vis_helper.c
@@ -0,0 +1,490 @@
+/*
+ * VIS op helpers
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+
+/* This function uses non-native bit order */
+#define GET_FIELD(X, FROM, TO) \
+ ((X) >> (63 - (TO)) & ((1ULL << ((TO) - (FROM) + 1)) - 1))
+
+/* This function uses the order in the manuals, i.e. bit 0 is 2^0 */
+#define GET_FIELD_SP(X, FROM, TO) \
+ GET_FIELD(X, 63 - (TO), 63 - (FROM))
+
+target_ulong helper_array8(target_ulong pixel_addr, target_ulong cubesize)
+{
+ return (GET_FIELD_SP(pixel_addr, 60, 63) << (17 + 2 * cubesize)) |
+ (GET_FIELD_SP(pixel_addr, 39, 39 + cubesize - 1) << (17 + cubesize)) |
+ (GET_FIELD_SP(pixel_addr, 17 + cubesize - 1, 17) << 17) |
+ (GET_FIELD_SP(pixel_addr, 56, 59) << 13) |
+ (GET_FIELD_SP(pixel_addr, 35, 38) << 9) |
+ (GET_FIELD_SP(pixel_addr, 13, 16) << 5) |
+ (((pixel_addr >> 55) & 1) << 4) |
+ (GET_FIELD_SP(pixel_addr, 33, 34) << 2) |
+ GET_FIELD_SP(pixel_addr, 11, 12);
+}
+
+#ifdef HOST_WORDS_BIGENDIAN
+#define VIS_B64(n) b[7 - (n)]
+#define VIS_W64(n) w[3 - (n)]
+#define VIS_SW64(n) sw[3 - (n)]
+#define VIS_L64(n) l[1 - (n)]
+#define VIS_B32(n) b[3 - (n)]
+#define VIS_W32(n) w[1 - (n)]
+#else
+#define VIS_B64(n) b[n]
+#define VIS_W64(n) w[n]
+#define VIS_SW64(n) sw[n]
+#define VIS_L64(n) l[n]
+#define VIS_B32(n) b[n]
+#define VIS_W32(n) w[n]
+#endif
+
+typedef union {
+ uint8_t b[8];
+ uint16_t w[4];
+ int16_t sw[4];
+ uint32_t l[2];
+ uint64_t ll;
+ float64 d;
+} VIS64;
+
+typedef union {
+ uint8_t b[4];
+ uint16_t w[2];
+ uint32_t l;
+ float32 f;
+} VIS32;
+
+uint64_t helper_fpmerge(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+
+ s.ll = src1;
+ d.ll = src2;
+
+ /* Reverse calculation order to handle overlap */
+ d.VIS_B64(7) = s.VIS_B64(3);
+ d.VIS_B64(6) = d.VIS_B64(3);
+ d.VIS_B64(5) = s.VIS_B64(2);
+ d.VIS_B64(4) = d.VIS_B64(2);
+ d.VIS_B64(3) = s.VIS_B64(1);
+ d.VIS_B64(2) = d.VIS_B64(1);
+ d.VIS_B64(1) = s.VIS_B64(0);
+ /* d.VIS_B64(0) = d.VIS_B64(0); */
+
+ return d.ll;
+}
+
+uint64_t helper_fmul8x16(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(r) * (int32_t)s.VIS_B64(r); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_W64(r) = tmp >> 8;
+
+ PMUL(0);
+ PMUL(1);
+ PMUL(2);
+ PMUL(3);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmul8x16al(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(1) * (int32_t)s.VIS_B64(r); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_W64(r) = tmp >> 8;
+
+ PMUL(0);
+ PMUL(1);
+ PMUL(2);
+ PMUL(3);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmul8x16au(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(0) * (int32_t)s.VIS_B64(r); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_W64(r) = tmp >> 8;
+
+ PMUL(0);
+ PMUL(1);
+ PMUL(2);
+ PMUL(3);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmul8sux16(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(r) * ((int32_t)s.VIS_SW64(r) >> 8); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_W64(r) = tmp >> 8;
+
+ PMUL(0);
+ PMUL(1);
+ PMUL(2);
+ PMUL(3);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmul8ulx16(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(r) * ((uint32_t)s.VIS_B64(r * 2)); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_W64(r) = tmp >> 8;
+
+ PMUL(0);
+ PMUL(1);
+ PMUL(2);
+ PMUL(3);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmuld8sux16(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(r) * ((int32_t)s.VIS_SW64(r) >> 8); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_L64(r) = tmp;
+
+ /* Reverse calculation order to handle overlap */
+ PMUL(1);
+ PMUL(0);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fmuld8ulx16(uint64_t src1, uint64_t src2)
+{
+ VIS64 s, d;
+ uint32_t tmp;
+
+ s.ll = src1;
+ d.ll = src2;
+
+#define PMUL(r) \
+ tmp = (int32_t)d.VIS_SW64(r) * ((uint32_t)s.VIS_B64(r * 2)); \
+ if ((tmp & 0xff) > 0x7f) { \
+ tmp += 0x100; \
+ } \
+ d.VIS_L64(r) = tmp;
+
+ /* Reverse calculation order to handle overlap */
+ PMUL(1);
+ PMUL(0);
+#undef PMUL
+
+ return d.ll;
+}
+
+uint64_t helper_fexpand(uint64_t src1, uint64_t src2)
+{
+ VIS32 s;
+ VIS64 d;
+
+ s.l = (uint32_t)src1;
+ d.ll = src2;
+ d.VIS_W64(0) = s.VIS_B32(0) << 4;
+ d.VIS_W64(1) = s.VIS_B32(1) << 4;
+ d.VIS_W64(2) = s.VIS_B32(2) << 4;
+ d.VIS_W64(3) = s.VIS_B32(3) << 4;
+
+ return d.ll;
+}
+
+#define VIS_HELPER(name, F) \
+ uint64_t name##16(uint64_t src1, uint64_t src2) \
+ { \
+ VIS64 s, d; \
+ \
+ s.ll = src1; \
+ d.ll = src2; \
+ \
+ d.VIS_W64(0) = F(d.VIS_W64(0), s.VIS_W64(0)); \
+ d.VIS_W64(1) = F(d.VIS_W64(1), s.VIS_W64(1)); \
+ d.VIS_W64(2) = F(d.VIS_W64(2), s.VIS_W64(2)); \
+ d.VIS_W64(3) = F(d.VIS_W64(3), s.VIS_W64(3)); \
+ \
+ return d.ll; \
+ } \
+ \
+ uint32_t name##16s(uint32_t src1, uint32_t src2) \
+ { \
+ VIS32 s, d; \
+ \
+ s.l = src1; \
+ d.l = src2; \
+ \
+ d.VIS_W32(0) = F(d.VIS_W32(0), s.VIS_W32(0)); \
+ d.VIS_W32(1) = F(d.VIS_W32(1), s.VIS_W32(1)); \
+ \
+ return d.l; \
+ } \
+ \
+ uint64_t name##32(uint64_t src1, uint64_t src2) \
+ { \
+ VIS64 s, d; \
+ \
+ s.ll = src1; \
+ d.ll = src2; \
+ \
+ d.VIS_L64(0) = F(d.VIS_L64(0), s.VIS_L64(0)); \
+ d.VIS_L64(1) = F(d.VIS_L64(1), s.VIS_L64(1)); \
+ \
+ return d.ll; \
+ } \
+ \
+ uint32_t name##32s(uint32_t src1, uint32_t src2) \
+ { \
+ VIS32 s, d; \
+ \
+ s.l = src1; \
+ d.l = src2; \
+ \
+ d.l = F(d.l, s.l); \
+ \
+ return d.l; \
+ }
+
+#define FADD(a, b) ((a) + (b))
+#define FSUB(a, b) ((a) - (b))
+VIS_HELPER(helper_fpadd, FADD)
+VIS_HELPER(helper_fpsub, FSUB)
+
+#define VIS_CMPHELPER(name, F) \
+ uint64_t name##16(uint64_t src1, uint64_t src2) \
+ { \
+ VIS64 s, d; \
+ \
+ s.ll = src1; \
+ d.ll = src2; \
+ \
+ d.VIS_W64(0) = F(s.VIS_W64(0), d.VIS_W64(0)) ? 1 : 0; \
+ d.VIS_W64(0) |= F(s.VIS_W64(1), d.VIS_W64(1)) ? 2 : 0; \
+ d.VIS_W64(0) |= F(s.VIS_W64(2), d.VIS_W64(2)) ? 4 : 0; \
+ d.VIS_W64(0) |= F(s.VIS_W64(3), d.VIS_W64(3)) ? 8 : 0; \
+ d.VIS_W64(1) = d.VIS_W64(2) = d.VIS_W64(3) = 0; \
+ \
+ return d.ll; \
+ } \
+ \
+ uint64_t name##32(uint64_t src1, uint64_t src2) \
+ { \
+ VIS64 s, d; \
+ \
+ s.ll = src1; \
+ d.ll = src2; \
+ \
+ d.VIS_L64(0) = F(s.VIS_L64(0), d.VIS_L64(0)) ? 1 : 0; \
+ d.VIS_L64(0) |= F(s.VIS_L64(1), d.VIS_L64(1)) ? 2 : 0; \
+ d.VIS_L64(1) = 0; \
+ \
+ return d.ll; \
+ }
+
+#define FCMPGT(a, b) ((a) > (b))
+#define FCMPEQ(a, b) ((a) == (b))
+#define FCMPLE(a, b) ((a) <= (b))
+#define FCMPNE(a, b) ((a) != (b))
+
+VIS_CMPHELPER(helper_fcmpgt, FCMPGT)
+VIS_CMPHELPER(helper_fcmpeq, FCMPEQ)
+VIS_CMPHELPER(helper_fcmple, FCMPLE)
+VIS_CMPHELPER(helper_fcmpne, FCMPNE)
+
+uint64_t helper_pdist(uint64_t sum, uint64_t src1, uint64_t src2)
+{
+ int i;
+ for (i = 0; i < 8; i++) {
+ int s1, s2;
+
+ s1 = (src1 >> (56 - (i * 8))) & 0xff;
+ s2 = (src2 >> (56 - (i * 8))) & 0xff;
+
+ /* Absolute value of difference. */
+ s1 -= s2;
+ if (s1 < 0) {
+ s1 = -s1;
+ }
+
+ sum += s1;
+ }
+
+ return sum;
+}
+
+uint32_t helper_fpack16(uint64_t gsr, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0xf;
+ uint32_t ret = 0;
+ int byte;
+
+ for (byte = 0; byte < 4; byte++) {
+ uint32_t val;
+ int16_t src = rs2 >> (byte * 16);
+ int32_t scaled = src << scale;
+ int32_t from_fixed = scaled >> 7;
+
+ val = (from_fixed < 0 ? 0 :
+ from_fixed > 255 ? 255 : from_fixed);
+
+ ret |= val << (8 * byte);
+ }
+
+ return ret;
+}
+
+uint64_t helper_fpack32(uint64_t gsr, uint64_t rs1, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0x1f;
+ uint64_t ret = 0;
+ int word;
+
+ ret = (rs1 << 8) & ~(0x000000ff000000ffULL);
+ for (word = 0; word < 2; word++) {
+ uint64_t val;
+ int32_t src = rs2 >> (word * 32);
+ int64_t scaled = (int64_t)src << scale;
+ int64_t from_fixed = scaled >> 23;
+
+ val = (from_fixed < 0 ? 0 :
+ (from_fixed > 255) ? 255 : from_fixed);
+
+ ret |= val << (32 * word);
+ }
+
+ return ret;
+}
+
+uint32_t helper_fpackfix(uint64_t gsr, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0x1f;
+ uint32_t ret = 0;
+ int word;
+
+ for (word = 0; word < 2; word++) {
+ uint32_t val;
+ int32_t src = rs2 >> (word * 32);
+ int64_t scaled = (int64_t)src << scale;
+ int64_t from_fixed = scaled >> 16;
+
+ val = (from_fixed < -32768 ? -32768 :
+ from_fixed > 32767 ? 32767 : from_fixed);
+
+ ret |= (val & 0xffff) << (word * 16);
+ }
+
+ return ret;
+}
+
+uint64_t helper_bshuffle(uint64_t gsr, uint64_t src1, uint64_t src2)
+{
+ union {
+ uint64_t ll[2];
+ uint8_t b[16];
+ } s;
+ VIS64 r;
+ uint32_t i, mask, host;
+
+ /* Set up S such that we can index across all of the bytes. */
+#ifdef HOST_WORDS_BIGENDIAN
+ s.ll[0] = src1;
+ s.ll[1] = src2;
+ host = 0;
+#else
+ s.ll[1] = src1;
+ s.ll[0] = src2;
+ host = 15;
+#endif
+ mask = gsr >> 32;
+
+ for (i = 0; i < 8; ++i) {
+ unsigned e = (mask >> (28 - i*4)) & 0xf;
+ r.VIS_B64(i) = s.b[e ^ host];
+ }
+
+ return r.ll;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 01:03:28 +0000