| /* |
| * 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; |
| } |
