xref: /openbmc/qemu/target/loongarch/vec.h (revision 55394dcbec8f0c29c30e792c102a0edd50a52bf4)
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 */
76