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qemu/target/sparc/vis_helper.c
Chetan Pant 5650b5497e sparc tcg cpus: Fix Lesser GPL version number 
There is no "version 2" of the "Lesser" General Public License.
It is either "GPL version 2.0" or "Lesser GPL version 2.1".
This patch replaces all occurrences of "Lesser GPL version 2" with
"Lesser GPL version 2.1" in comment section.

Signed-off-by: Chetan Pant <chetan4windows@gmail.com>
Message-Id: <20201023124235.20130-1-chetan4windows@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-11-15 16:46:00 +01:00

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/*
* 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 2.1 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;
}
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