target/loongarch/vec.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * QEMU LoongArch vector utilitites
   4  *
   5  * Copyright (c) 2023 Loongson Technology Corporation Limited
   6  */
   7
   8 #ifndef LOONGARCH_VEC_H
   9 #define LOONGARCH_VEC_H
  10
  11 #if HOST_BIG_ENDIAN
  12 #define B(x)  B[(x) ^ 15]
  13 #define H(x)  H[(x) ^ 7]
  14 #define W(x)  W[(x) ^ 3]
  15 #define D(x)  D[(x) ^ 1]
  16 #define UB(x) UB[(x) ^ 15]
  17 #define UH(x) UH[(x) ^ 7]
  18 #define UW(x) UW[(x) ^ 3]
  19 #define UD(x) UD[(x) ^ 1]
  20 #define Q(x)  Q[x]
  21 #else
  22 #define B(x)  B[x]
  23 #define H(x)  H[x]
  24 #define W(x)  W[x]
  25 #define D(x)  D[x]
  26 #define UB(x) UB[x]
  27 #define UH(x) UH[x]
  28 #define UW(x) UW[x]
  29 #define UD(x) UD[x]
  30 #define Q(x)  Q[x]
  31 #endif /* HOST_BIG_ENDIAN */
  32
  33 #define DO_ADD(a, b)  (a + b)
  34 #define DO_SUB(a, b)  (a - b)
  35 #define DO_VAVG(a, b)  ((a >> 1) + (b >> 1) + (a & b & 1))
  36 #define DO_VAVGR(a, b) ((a >> 1) + (b >> 1) + ((a | b) & 1))
  37 #define DO_VABSD(a, b)  ((a > b) ? (a -b) : (b-a))
  38 #define DO_VABS(a)  ((a < 0) ? (-a) : (a))
  39 #define DO_MIN(a, b) (a < b ? a : b)
  40 #define DO_MAX(a, b) (a > b ? a : b)
  41 #define DO_MUL(a, b) (a * b)
  42 #define DO_MADD(a, b, c)  (a + b * c)
  43 #define DO_MSUB(a, b, c)  (a - b * c)
  44
  45 #define DO_DIVU(N, M) (unlikely(M == 0) ? 0 : N / M)
  46 #define DO_REMU(N, M) (unlikely(M == 0) ? 0 : N % M)
  47 #define DO_DIV(N, M)  (unlikely(M == 0) ? 0 :\
  48         unlikely((N == -N) && (M == (__typeof(N))(-1))) ? N : N / M)
  49 #define DO_REM(N, M)  (unlikely(M == 0) ? 0 :\
  50         unlikely((N == -N) && (M == (__typeof(N))(-1))) ? 0 : N % M)
  51
  52 #define DO_SIGNCOV(a, b)  (a == 0 ? 0 : a < 0 ? -b : b)
  53
  54 #define R_SHIFT(a, b) (a >> b)
  55
  56 #define DO_CLO_B(N)  (clz32(~N & 0xff) - 24)
  57 #define DO_CLO_H(N)  (clz32(~N & 0xffff) - 16)
  58 #define DO_CLO_W(N)  (clz32(~N))
  59 #define DO_CLO_D(N)  (clz64(~N))
  60 #define DO_CLZ_B(N)  (clz32(N) - 24)
  61 #define DO_CLZ_H(N)  (clz32(N) - 16)
  62 #define DO_CLZ_W(N)  (clz32(N))
  63 #define DO_CLZ_D(N)  (clz64(N))
  64
  65 #define DO_BITCLR(a, bit) (a & ~(1ull << bit))
  66 #define DO_BITSET(a, bit) (a | 1ull << bit)
  67 #define DO_BITREV(a, bit) (a ^ (1ull << bit))
  68
  69 #define VSEQ(a, b) (a == b ? -1 : 0)
  70 #define VSLE(a, b) (a <= b ? -1 : 0)
  71 #define VSLT(a, b) (a < b ? -1 : 0)
  72
  73 #define SHF_POS(i, imm) (((i) & 0xfc) + (((imm) >> (2 * ((i) & 0x03))) & 0x03))
  74
  75 #endif /* LOONGARCH_VEC_H */