src/target/riscv/opcodes.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include "encoding.h"
   4
   5 #define ZERO    0
   6 #define T0      5
   7 #define S0      8
   8 #define S1      9
   9
  10 static uint32_t bits(uint32_t value, unsigned int hi, unsigned int lo)
  11 {
  12         return (value >> lo) & ((1 << (hi+1-lo)) - 1);
  13 }
  14
  15 static uint32_t bit(uint32_t value, unsigned int b)
  16 {
  17         return (value >> b) & 1;
  18 }
  19
  20 static uint32_t inst_rd(uint32_t r) __attribute__ ((unused));
  21 static uint32_t inst_rd(uint32_t r)
  22 {
  23         return bits(r, 4, 0) << 7;
  24 }
  25
  26 static uint32_t inst_rs1(uint32_t r) __attribute__ ((unused));
  27 static uint32_t inst_rs1(uint32_t r)
  28 {
  29         return bits(r, 4, 0) << 15;
  30 }
  31
  32 static uint32_t inst_rs2(uint32_t r) __attribute__ ((unused));
  33 static uint32_t inst_rs2(uint32_t r)
  34 {
  35         return bits(r, 4, 0) << 20;
  36 }
  37
  38 static uint32_t imm_i(uint32_t imm) __attribute__ ((unused));
  39 static uint32_t imm_i(uint32_t imm)
  40 {
  41         return bits(imm, 11, 0) << 20;
  42 }
  43
  44 static uint32_t imm_s(uint32_t imm) __attribute__ ((unused));
  45 static uint32_t imm_s(uint32_t imm)
  46 {
  47         return (bits(imm, 4, 0) << 7) | (bits(imm, 11, 5) << 25);
  48 }
  49
  50 static uint32_t imm_b(uint32_t imm) __attribute__ ((unused));
  51 static uint32_t imm_b(uint32_t imm)
  52 {
  53         return (bit(imm, 11) << 7) | (bits(imm, 4, 1) << 8) | (bits(imm, 10, 5) << 25) | (bit(imm, 12) << 31);
  54 }
  55
  56 static uint32_t imm_u(uint32_t imm) __attribute__ ((unused));
  57 static uint32_t imm_u(uint32_t imm)
  58 {
  59         return bits(imm, 31, 12) << 12;
  60 }
  61
  62 static uint32_t imm_j(uint32_t imm) __attribute__ ((unused));
  63 static uint32_t imm_j(uint32_t imm)
  64 {
  65         return (bits(imm, 19, 12) << 12) | (bit(imm, 11) << 20) | (bits(imm, 10, 1) << 21) | (bit(imm, 20) << 31);
  66 }
  67
  68 static uint32_t jal(unsigned int rd, uint32_t imm) __attribute__ ((unused));
  69 static uint32_t jal(unsigned int rd, uint32_t imm)
  70 {
  71         return imm_j(imm) | inst_rd(rd) | MATCH_JAL;
  72 }
  73
  74 static uint32_t csrsi(unsigned int csr, uint16_t imm) __attribute__ ((unused));
  75 static uint32_t csrsi(unsigned int csr, uint16_t imm)
  76 {
  77         return imm_i(csr) | inst_rs1(imm) | MATCH_CSRRSI;
  78 }
  79
  80 static uint32_t sw(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
  81 static uint32_t sw(unsigned int src, unsigned int base, uint16_t offset)
  82 {
  83         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_SW;
  84 }
  85
  86 static uint32_t sd(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
  87 static uint32_t sd(unsigned int src, unsigned int base, uint16_t offset)
  88 {
  89         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_SD;
  90 }
  91
  92 static uint32_t sh(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
  93 static uint32_t sh(unsigned int src, unsigned int base, uint16_t offset)
  94 {
  95         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_SH;
  96 }
  97
  98 static uint32_t sb(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
  99 static uint32_t sb(unsigned int src, unsigned int base, uint16_t offset)
 100 {
 101         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_SB;
 102 }
 103
 104 static uint32_t ld(unsigned int rd, unsigned int base, uint16_t offset) __attribute__ ((unused));
 105 static uint32_t ld(unsigned int rd, unsigned int base, uint16_t offset)
 106 {
 107         return imm_i(offset) | inst_rs1(base) | inst_rd(rd) | MATCH_LD;
 108 }
 109
 110 static uint32_t lw(unsigned int rd, unsigned int base, uint16_t offset) __attribute__ ((unused));
 111 static uint32_t lw(unsigned int rd, unsigned int base, uint16_t offset)
 112 {
 113         return imm_i(offset) | inst_rs1(base) | inst_rd(rd) | MATCH_LW;
 114 }
 115
 116 static uint32_t lh(unsigned int rd, unsigned int base, uint16_t offset) __attribute__ ((unused));
 117 static uint32_t lh(unsigned int rd, unsigned int base, uint16_t offset)
 118 {
 119         return imm_i(offset) | inst_rs1(base) | inst_rd(rd) | MATCH_LH;
 120 }
 121
 122 static uint32_t lb(unsigned int rd, unsigned int base, uint16_t offset) __attribute__ ((unused));
 123 static uint32_t lb(unsigned int rd, unsigned int base, uint16_t offset)
 124 {
 125         return imm_i(offset) | inst_rs1(base) | inst_rd(rd) | MATCH_LB;
 126 }
 127
 128 static uint32_t csrw(unsigned int source, unsigned int csr) __attribute__ ((unused));
 129 static uint32_t csrw(unsigned int source, unsigned int csr)
 130 {
 131         return imm_i(csr) | inst_rs1(source) | MATCH_CSRRW;
 132 }
 133
 134 static uint32_t addi(unsigned int dest, unsigned int src, uint16_t imm) __attribute__ ((unused));
 135 static uint32_t addi(unsigned int dest, unsigned int src, uint16_t imm)
 136 {
 137         return imm_i(imm) | inst_rs1(src) | inst_rd(dest) | MATCH_ADDI;
 138 }
 139
 140 static uint32_t csrr(unsigned int rd, unsigned int csr) __attribute__ ((unused));
 141 static uint32_t csrr(unsigned int rd, unsigned int csr)
 142 {
 143         return imm_i(csr) | inst_rd(rd) | MATCH_CSRRS;
 144 }
 145
 146 static uint32_t csrrs(unsigned int rd, unsigned int rs, unsigned int csr) __attribute__ ((unused));
 147 static uint32_t csrrs(unsigned int rd, unsigned int rs, unsigned int csr)
 148 {
 149         return imm_i(csr) | inst_rs1(rs) | inst_rd(rd) | MATCH_CSRRS;
 150 }
 151
 152 static uint32_t csrrw(unsigned int rd, unsigned int rs, unsigned int csr) __attribute__ ((unused));
 153 static uint32_t csrrw(unsigned int rd, unsigned int rs, unsigned int csr)
 154 {
 155         return imm_i(csr) | inst_rs1(rs) | inst_rd(rd) | MATCH_CSRRW;
 156 }
 157
 158 static uint32_t csrrci(unsigned int rd, unsigned int zimm, unsigned int csr) __attribute__ ((unused));
 159 static uint32_t csrrci(unsigned int rd, unsigned int zimm, unsigned int csr)
 160 {
 161         return imm_i(csr) | inst_rs1(zimm) | inst_rd(rd) | MATCH_CSRRCI;
 162 }
 163
 164 static uint32_t csrrsi(unsigned int rd, unsigned int zimm, unsigned int csr) __attribute__ ((unused));
 165 static uint32_t csrrsi(unsigned int rd, unsigned int zimm, unsigned int csr)
 166 {
 167         return imm_i(csr) | inst_rs1(zimm) | inst_rd(rd) | MATCH_CSRRSI;
 168 }
 169
 170 static uint32_t fsw(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
 171 static uint32_t fsw(unsigned int src, unsigned int base, uint16_t offset)
 172 {
 173         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_FSW;
 174 }
 175
 176 static uint32_t fsd(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
 177 static uint32_t fsd(unsigned int src, unsigned int base, uint16_t offset)
 178 {
 179         return imm_s(offset) | inst_rs2(src) | inst_rs1(base) | MATCH_FSD;
 180 }
 181
 182 static uint32_t flw(unsigned int dest, unsigned int base, uint16_t offset) __attribute__ ((unused));
 183 static uint32_t flw(unsigned int dest, unsigned int base, uint16_t offset)
 184 {
 185         return imm_i(offset) | inst_rs1(base) | inst_rd(dest) | MATCH_FLW;
 186 }
 187
 188 static uint32_t fld(unsigned int dest, unsigned int base, uint16_t offset) __attribute__ ((unused));
 189 static uint32_t fld(unsigned int dest, unsigned int base, uint16_t offset)
 190 {
 191         return imm_i(offset) | inst_rs1(base) | inst_rd(dest) | MATCH_FLD;
 192 }
 193
 194 static uint32_t fmv_x_w(unsigned dest, unsigned src) __attribute__ ((unused));
 195 static uint32_t fmv_x_w(unsigned dest, unsigned src)
 196 {
 197         return inst_rs1(src) | inst_rd(dest) | MATCH_FMV_X_W;
 198 }
 199
 200 static uint32_t fmv_x_d(unsigned dest, unsigned src) __attribute__ ((unused));
 201 static uint32_t fmv_x_d(unsigned dest, unsigned src)
 202 {
 203         return inst_rs1(src) | inst_rd(dest) | MATCH_FMV_X_D;
 204 }
 205
 206 static uint32_t fmv_w_x(unsigned dest, unsigned src) __attribute__ ((unused));
 207 static uint32_t fmv_w_x(unsigned dest, unsigned src)
 208 {
 209         return inst_rs1(src) | inst_rd(dest) | MATCH_FMV_W_X;
 210 }
 211
 212 static uint32_t fmv_d_x(unsigned dest, unsigned src) __attribute__ ((unused));
 213 static uint32_t fmv_d_x(unsigned dest, unsigned src)
 214 {
 215         return inst_rs1(src) | inst_rd(dest) | MATCH_FMV_D_X;
 216 }
 217
 218 static uint32_t ebreak(void) __attribute__ ((unused));
 219 static uint32_t ebreak(void)
 220 {
 221         return MATCH_EBREAK;
 222 }
 223 static uint32_t ebreak_c(void) __attribute__ ((unused));
 224 static uint32_t ebreak_c(void)
 225 {
 226         return MATCH_C_EBREAK;
 227 }
 228
 229 static uint32_t wfi(void) __attribute__ ((unused));
 230 static uint32_t wfi(void) { return MATCH_WFI; }
 231
 232 static uint32_t fence_i(void) __attribute__ ((unused));
 233 static uint32_t fence_i(void)
 234 {
 235         return MATCH_FENCE_I;
 236 }
 237
 238 static uint32_t lui(unsigned int dest, uint32_t imm) __attribute__ ((unused));
 239 static uint32_t lui(unsigned int dest, uint32_t imm)
 240 {
 241         return imm_u(imm) | inst_rd(dest) | MATCH_LUI;
 242 }
 243
 244 /*
 245 static uint32_t csrci(unsigned int csr, uint16_t imm) __attribute__ ((unused));
 246 static uint32_t csrci(unsigned int csr, uint16_t imm)
 247 {
 248   return (csr << 20) |
 249     (bits(imm, 4, 0) << 15) |
 250     MATCH_CSRRCI;
 251 }
 252
 253 static uint32_t li(unsigned int dest, uint16_t imm) __attribute__ ((unused));
 254 static uint32_t li(unsigned int dest, uint16_t imm)
 255 {
 256         return addi(dest, 0, imm);
 257 }
 258
 259 static uint32_t fsd(unsigned int src, unsigned int base, uint16_t offset) __attribute__ ((unused));
 260 static uint32_t fsd(unsigned int src, unsigned int base, uint16_t offset)
 261 {
 262   return (bits(offset, 11, 5) << 25) |
 263     (bits(src, 4, 0) << 20) |
 264     (base << 15) |
 265     (bits(offset, 4, 0) << 7) |
 266     MATCH_FSD;
 267 }
 268
 269 static uint32_t ori(unsigned int dest, unsigned int src, uint16_t imm) __attribute__ ((unused));
 270 static uint32_t ori(unsigned int dest, unsigned int src, uint16_t imm)
 271 {
 272   return (bits(imm, 11, 0) << 20) |
 273     (src << 15) |
 274     (dest << 7) |
 275     MATCH_ORI;
 276 }
 277
 278 static uint32_t nop(void) __attribute__ ((unused));
 279 static uint32_t nop(void)
 280 {
 281   return addi(0, 0, 0);
 282 }
 283 */
 284
 285 static uint32_t xori(unsigned int dest, unsigned int src, uint16_t imm) __attribute__ ((unused));
 286 static uint32_t xori(unsigned int dest, unsigned int src, uint16_t imm)
 287 {
 288         return imm_i(imm) | inst_rs1(src) | inst_rd(dest) | MATCH_XORI;
 289 }
 290
 291 static uint32_t srli(unsigned int dest, unsigned int src, uint8_t shamt) __attribute__ ((unused));
 292 static uint32_t srli(unsigned int dest, unsigned int src, uint8_t shamt)
 293 {
 294         return inst_rs2(shamt) | inst_rs1(src) | inst_rd(dest) | MATCH_SRLI;
 295 }
 296
 297 static uint32_t fence(void) __attribute__((unused));
 298 static uint32_t fence(void)
 299 {
 300         return MATCH_FENCE;
 301 }
 302
 303 static uint32_t auipc(unsigned int dest) __attribute__((unused));
 304 static uint32_t auipc(unsigned int dest)
 305 {
 306         return MATCH_AUIPC | inst_rd(dest);
 307 }
 308
 309 static uint32_t vsetvli(unsigned int dest, unsigned int src, uint16_t imm) __attribute__((unused));
 310 static uint32_t vsetvli(unsigned int dest, unsigned int src, uint16_t imm)
 311 {
 312         return (bits(imm, 10, 0) << 20) | inst_rs1(src) | inst_rd(dest) | MATCH_VSETVLI;
 313 }
 314
 315 static uint32_t vmv_x_s(unsigned int rd, unsigned int vs2) __attribute__((unused));
 316 static uint32_t vmv_x_s(unsigned int rd, unsigned int vs2)
 317 {
 318         return inst_rs2(vs2) | inst_rd(rd) | MATCH_VMV_X_S;
 319 }
 320
 321 static uint32_t vmv_s_x(unsigned int vd, unsigned int vs2) __attribute__((unused));
 322 static uint32_t vmv_s_x(unsigned int vd, unsigned int rs1)
 323 {
 324         return inst_rs1(rs1) | inst_rd(vd) | MATCH_VMV_S_X;
 325 }
 326
 327 static uint32_t vslide1down_vx(unsigned int vd, unsigned int vs2,
 328                 unsigned int rs1, unsigned int vm) __attribute__((unused));
 329 static uint32_t vslide1down_vx(unsigned int vd, unsigned int vs2,
 330                 unsigned int rs1, unsigned int vm)
 331 {
 332         return ((vm & 1) << 25) | inst_rs2(vs2) | inst_rs1(rs1) | inst_rd(vd) | MATCH_VSLIDE1DOWN_VX;
 333 }
 334