| 1 | /* Simulator for Analog Devices Blackfin processors. |
| 2 | |
| 3 | Copyright (C) 2005-2011 Free Software Foundation, Inc. |
| 4 | Contributed by Analog Devices, Inc. |
| 5 | |
| 6 | This file is part of simulators. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "config.h" |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <inttypes.h> |
| 27 | |
| 28 | #include "opcode/bfin.h" |
| 29 | #include "sim-main.h" |
| 30 | #include "dv-bfin_cec.h" |
| 31 | #include "dv-bfin_mmu.h" |
| 32 | |
| 33 | #define HOST_LONG_WORD_SIZE (sizeof (long) * 8) |
| 34 | |
| 35 | #define SIGNEXTEND(v, n) \ |
| 36 | (((bs32)(v) << (HOST_LONG_WORD_SIZE - (n))) >> (HOST_LONG_WORD_SIZE - (n))) |
| 37 | |
| 38 | static __attribute__ ((noreturn)) void |
| 39 | illegal_instruction (SIM_CPU *cpu) |
| 40 | { |
| 41 | TRACE_INSN (cpu, "ILLEGAL INSTRUCTION"); |
| 42 | while (1) |
| 43 | cec_exception (cpu, VEC_UNDEF_I); |
| 44 | } |
| 45 | |
| 46 | static __attribute__ ((noreturn)) void |
| 47 | illegal_instruction_combination (SIM_CPU *cpu) |
| 48 | { |
| 49 | TRACE_INSN (cpu, "ILLEGAL INSTRUCTION COMBINATION"); |
| 50 | while (1) |
| 51 | cec_exception (cpu, VEC_ILGAL_I); |
| 52 | } |
| 53 | |
| 54 | static __attribute__ ((noreturn)) void |
| 55 | unhandled_instruction (SIM_CPU *cpu, const char *insn) |
| 56 | { |
| 57 | SIM_DESC sd = CPU_STATE (cpu); |
| 58 | bu16 iw0, iw1; |
| 59 | bu32 iw2; |
| 60 | |
| 61 | TRACE_EVENTS (cpu, "unhandled instruction"); |
| 62 | |
| 63 | iw0 = IFETCH (PCREG); |
| 64 | iw1 = IFETCH (PCREG + 2); |
| 65 | iw2 = ((bu32)iw0 << 16) | iw1; |
| 66 | |
| 67 | sim_io_eprintf (sd, "Unhandled instruction at 0x%08x (%s opcode 0x", PCREG, insn); |
| 68 | if ((iw0 & 0xc000) == 0xc000) |
| 69 | sim_io_eprintf (sd, "%08x", iw2); |
| 70 | else |
| 71 | sim_io_eprintf (sd, "%04x", iw0); |
| 72 | |
| 73 | sim_io_eprintf (sd, ") ... aborting\n"); |
| 74 | |
| 75 | illegal_instruction (cpu); |
| 76 | } |
| 77 | |
| 78 | static const char * const astat_names[] = |
| 79 | { |
| 80 | [ 0] = "AZ", |
| 81 | [ 1] = "AN", |
| 82 | [ 2] = "AC0_COPY", |
| 83 | [ 3] = "V_COPY", |
| 84 | [ 4] = "ASTAT_4", |
| 85 | [ 5] = "CC", |
| 86 | [ 6] = "AQ", |
| 87 | [ 7] = "ASTAT_7", |
| 88 | [ 8] = "RND_MOD", |
| 89 | [ 9] = "ASTAT_9", |
| 90 | [10] = "ASTAT_10", |
| 91 | [11] = "ASTAT_11", |
| 92 | [12] = "AC0", |
| 93 | [13] = "AC1", |
| 94 | [14] = "ASTAT_14", |
| 95 | [15] = "ASTAT_15", |
| 96 | [16] = "AV0", |
| 97 | [17] = "AV0S", |
| 98 | [18] = "AV1", |
| 99 | [19] = "AV1S", |
| 100 | [20] = "ASTAT_20", |
| 101 | [21] = "ASTAT_21", |
| 102 | [22] = "ASTAT_22", |
| 103 | [23] = "ASTAT_23", |
| 104 | [24] = "V", |
| 105 | [25] = "VS", |
| 106 | [26] = "ASTAT_26", |
| 107 | [27] = "ASTAT_27", |
| 108 | [28] = "ASTAT_28", |
| 109 | [29] = "ASTAT_29", |
| 110 | [30] = "ASTAT_30", |
| 111 | [31] = "ASTAT_31", |
| 112 | }; |
| 113 | |
| 114 | typedef enum |
| 115 | { |
| 116 | c_0, c_1, c_4, c_2, c_uimm2, c_uimm3, c_imm3, c_pcrel4, |
| 117 | c_imm4, c_uimm4s4, c_uimm4s4d, c_uimm4, c_uimm4s2, c_negimm5s4, c_imm5, |
| 118 | c_imm5d, c_uimm5, c_imm6, c_imm7, c_imm7d, c_imm8, c_uimm8, c_pcrel8, |
| 119 | c_uimm8s4, c_pcrel8s4, c_lppcrel10, c_pcrel10, c_pcrel12, c_imm16s4, |
| 120 | c_luimm16, c_imm16, c_imm16d, c_huimm16, c_rimm16, c_imm16s2, c_uimm16s4, |
| 121 | c_uimm16s4d, c_uimm16, c_pcrel24, c_uimm32, c_imm32, c_huimm32, c_huimm32e, |
| 122 | } const_forms_t; |
| 123 | |
| 124 | static const struct |
| 125 | { |
| 126 | const char *name; |
| 127 | const int nbits; |
| 128 | const char reloc; |
| 129 | const char issigned; |
| 130 | const char pcrel; |
| 131 | const char scale; |
| 132 | const char offset; |
| 133 | const char negative; |
| 134 | const char positive; |
| 135 | const char decimal; |
| 136 | const char leading; |
| 137 | const char exact; |
| 138 | } constant_formats[] = |
| 139 | { |
| 140 | { "0", 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 141 | { "1", 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 142 | { "4", 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 143 | { "2", 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 144 | { "uimm2", 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 145 | { "uimm3", 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 146 | { "imm3", 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 147 | { "pcrel4", 4, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 148 | { "imm4", 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 149 | { "uimm4s4", 4, 0, 0, 0, 2, 0, 0, 1, 0, 0, 0}, |
| 150 | { "uimm4s4d", 4, 0, 0, 0, 2, 0, 0, 1, 1, 0, 0}, |
| 151 | { "uimm4", 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 152 | { "uimm4s2", 4, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0}, |
| 153 | { "negimm5s4", 5, 0, 1, 0, 2, 0, 1, 0, 0, 0, 0}, |
| 154 | { "imm5", 5, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 155 | { "imm5d", 5, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0}, |
| 156 | { "uimm5", 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 157 | { "imm6", 6, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 158 | { "imm7", 7, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 159 | { "imm7d", 7, 0, 1, 0, 0, 0, 0, 0, 1, 3, 0}, |
| 160 | { "imm8", 8, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 161 | { "uimm8", 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 162 | { "pcrel8", 8, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 163 | { "uimm8s4", 8, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, |
| 164 | { "pcrel8s4", 8, 1, 1, 1, 2, 0, 0, 0, 0, 0, 0}, |
| 165 | { "lppcrel10", 10, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 166 | { "pcrel10", 10, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 167 | { "pcrel12", 12, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 168 | { "imm16s4", 16, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0}, |
| 169 | { "luimm16", 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 170 | { "imm16", 16, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 171 | { "imm16d", 16, 0, 1, 0, 0, 0, 0, 0, 1, 3, 0}, |
| 172 | { "huimm16", 16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 173 | { "rimm16", 16, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 174 | { "imm16s2", 16, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0}, |
| 175 | { "uimm16s4", 16, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0}, |
| 176 | { "uimm16s4d", 16, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0}, |
| 177 | { "uimm16", 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 178 | { "pcrel24", 24, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0}, |
| 179 | { "uimm32", 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 180 | { "imm32", 32, 0, 1, 0, 0, 0, 0, 0, 1, 3, 0}, |
| 181 | { "huimm32", 32, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, |
| 182 | { "huimm32e", 32, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, |
| 183 | }; |
| 184 | |
| 185 | static const char * |
| 186 | fmtconst_str (const_forms_t cf, bs32 x, bu32 pc) |
| 187 | { |
| 188 | static char buf[60]; |
| 189 | |
| 190 | if (constant_formats[cf].reloc) |
| 191 | { |
| 192 | bu32 ea = (((constant_formats[cf].pcrel ? SIGNEXTEND (x, constant_formats[cf].nbits) |
| 193 | : x) + constant_formats[cf].offset) << constant_formats[cf].scale); |
| 194 | if (constant_formats[cf].pcrel) |
| 195 | ea += pc; |
| 196 | /*if (outf->symbol_at_address_func (ea, outf) || !constant_formats[cf].exact) |
| 197 | { |
| 198 | outf->print_address_func (ea, outf); |
| 199 | return ""; |
| 200 | } |
| 201 | else*/ |
| 202 | { |
| 203 | sprintf (buf, "%#x", x); |
| 204 | return buf; |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /* Negative constants have an implied sign bit. */ |
| 209 | if (constant_formats[cf].negative) |
| 210 | { |
| 211 | int nb = constant_formats[cf].nbits + 1; |
| 212 | |
| 213 | x = x | (1 << constant_formats[cf].nbits); |
| 214 | x = SIGNEXTEND (x, nb); |
| 215 | } |
| 216 | else |
| 217 | x = constant_formats[cf].issigned ? SIGNEXTEND (x, constant_formats[cf].nbits) : x; |
| 218 | |
| 219 | if (constant_formats[cf].offset) |
| 220 | x += constant_formats[cf].offset; |
| 221 | |
| 222 | if (constant_formats[cf].scale) |
| 223 | x <<= constant_formats[cf].scale; |
| 224 | |
| 225 | if (constant_formats[cf].decimal) |
| 226 | { |
| 227 | if (constant_formats[cf].leading) |
| 228 | { |
| 229 | char ps[10]; |
| 230 | sprintf (ps, "%%%ii", constant_formats[cf].leading); |
| 231 | sprintf (buf, ps, x); |
| 232 | } |
| 233 | else |
| 234 | sprintf (buf, "%i", x); |
| 235 | } |
| 236 | else |
| 237 | { |
| 238 | if (constant_formats[cf].issigned && x < 0) |
| 239 | sprintf (buf, "-0x%x", abs (x)); |
| 240 | else |
| 241 | sprintf (buf, "0x%x", x); |
| 242 | } |
| 243 | |
| 244 | return buf; |
| 245 | } |
| 246 | |
| 247 | static bu32 |
| 248 | fmtconst_val (const_forms_t cf, bu32 x, bu32 pc) |
| 249 | { |
| 250 | if (0 && constant_formats[cf].reloc) |
| 251 | { |
| 252 | bu32 ea = (((constant_formats[cf].pcrel |
| 253 | ? (bu32)SIGNEXTEND (x, constant_formats[cf].nbits) |
| 254 | : x) + constant_formats[cf].offset) |
| 255 | << constant_formats[cf].scale); |
| 256 | if (constant_formats[cf].pcrel) |
| 257 | ea += pc; |
| 258 | |
| 259 | return ea; |
| 260 | } |
| 261 | |
| 262 | /* Negative constants have an implied sign bit. */ |
| 263 | if (constant_formats[cf].negative) |
| 264 | { |
| 265 | int nb = constant_formats[cf].nbits + 1; |
| 266 | x = x | (1 << constant_formats[cf].nbits); |
| 267 | x = SIGNEXTEND (x, nb); |
| 268 | } |
| 269 | else if (constant_formats[cf].issigned) |
| 270 | x = SIGNEXTEND (x, constant_formats[cf].nbits); |
| 271 | |
| 272 | x += constant_formats[cf].offset; |
| 273 | x <<= constant_formats[cf].scale; |
| 274 | |
| 275 | return x; |
| 276 | } |
| 277 | |
| 278 | #define uimm16s4(x) fmtconst_val (c_uimm16s4, x, 0) |
| 279 | #define uimm16s4_str(x) fmtconst_str (c_uimm16s4, x, 0) |
| 280 | #define uimm16s4d(x) fmtconst_val (c_uimm16s4d, x, 0) |
| 281 | #define pcrel4(x) fmtconst_val (c_pcrel4, x, pc) |
| 282 | #define pcrel8(x) fmtconst_val (c_pcrel8, x, pc) |
| 283 | #define pcrel8s4(x) fmtconst_val (c_pcrel8s4, x, pc) |
| 284 | #define pcrel10(x) fmtconst_val (c_pcrel10, x, pc) |
| 285 | #define pcrel12(x) fmtconst_val (c_pcrel12, x, pc) |
| 286 | #define negimm5s4(x) fmtconst_val (c_negimm5s4, x, 0) |
| 287 | #define negimm5s4_str(x) fmtconst_str (c_negimm5s4, x, 0) |
| 288 | #define rimm16(x) fmtconst_val (c_rimm16, x, 0) |
| 289 | #define huimm16(x) fmtconst_val (c_huimm16, x, 0) |
| 290 | #define imm16(x) fmtconst_val (c_imm16, x, 0) |
| 291 | #define imm16_str(x) fmtconst_str (c_imm16, x, 0) |
| 292 | #define imm16d(x) fmtconst_val (c_imm16d, x, 0) |
| 293 | #define uimm2(x) fmtconst_val (c_uimm2, x, 0) |
| 294 | #define uimm3(x) fmtconst_val (c_uimm3, x, 0) |
| 295 | #define uimm3_str(x) fmtconst_str (c_uimm3, x, 0) |
| 296 | #define luimm16(x) fmtconst_val (c_luimm16, x, 0) |
| 297 | #define luimm16_str(x) fmtconst_str (c_luimm16, x, 0) |
| 298 | #define uimm4(x) fmtconst_val (c_uimm4, x, 0) |
| 299 | #define uimm4_str(x) fmtconst_str (c_uimm4, x, 0) |
| 300 | #define uimm5(x) fmtconst_val (c_uimm5, x, 0) |
| 301 | #define uimm5_str(x) fmtconst_str (c_uimm5, x, 0) |
| 302 | #define imm16s2(x) fmtconst_val (c_imm16s2, x, 0) |
| 303 | #define imm16s2_str(x) fmtconst_str (c_imm16s2, x, 0) |
| 304 | #define uimm8(x) fmtconst_val (c_uimm8, x, 0) |
| 305 | #define imm16s4(x) fmtconst_val (c_imm16s4, x, 0) |
| 306 | #define imm16s4_str(x) fmtconst_str (c_imm16s4, x, 0) |
| 307 | #define uimm4s2(x) fmtconst_val (c_uimm4s2, x, 0) |
| 308 | #define uimm4s2_str(x) fmtconst_str (c_uimm4s2, x, 0) |
| 309 | #define uimm4s4(x) fmtconst_val (c_uimm4s4, x, 0) |
| 310 | #define uimm4s4_str(x) fmtconst_str (c_uimm4s4, x, 0) |
| 311 | #define uimm4s4d(x) fmtconst_val (c_uimm4s4d, x, 0) |
| 312 | #define lppcrel10(x) fmtconst_val (c_lppcrel10, x, pc) |
| 313 | #define imm3(x) fmtconst_val (c_imm3, x, 0) |
| 314 | #define imm3_str(x) fmtconst_str (c_imm3, x, 0) |
| 315 | #define imm4(x) fmtconst_val (c_imm4, x, 0) |
| 316 | #define uimm8s4(x) fmtconst_val (c_uimm8s4, x, 0) |
| 317 | #define imm5(x) fmtconst_val (c_imm5, x, 0) |
| 318 | #define imm5d(x) fmtconst_val (c_imm5d, x, 0) |
| 319 | #define imm6(x) fmtconst_val (c_imm6, x, 0) |
| 320 | #define imm7(x) fmtconst_val (c_imm7, x, 0) |
| 321 | #define imm7_str(x) fmtconst_str (c_imm7, x, 0) |
| 322 | #define imm7d(x) fmtconst_val (c_imm7d, x, 0) |
| 323 | #define imm8(x) fmtconst_val (c_imm8, x, 0) |
| 324 | #define pcrel24(x) fmtconst_val (c_pcrel24, x, pc) |
| 325 | #define pcrel24_str(x) fmtconst_str (c_pcrel24, x, pc) |
| 326 | #define uimm16(x) fmtconst_val (c_uimm16, x, 0) |
| 327 | #define uimm32(x) fmtconst_val (c_uimm32, x, 0) |
| 328 | #define imm32(x) fmtconst_val (c_imm32, x, 0) |
| 329 | #define huimm32(x) fmtconst_val (c_huimm32, x, 0) |
| 330 | #define huimm32e(x) fmtconst_val (c_huimm32e, x, 0) |
| 331 | |
| 332 | /* Table C-4. Core Register Encoding Map. */ |
| 333 | const char * const greg_names[] = |
| 334 | { |
| 335 | "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", |
| 336 | "P0", "P1", "P2", "P3", "P4", "P5", "SP", "FP", |
| 337 | "I0", "I1", "I2", "I3", "M0", "M1", "M2", "M3", |
| 338 | "B0", "B1", "B2", "B3", "L0", "L1", "L2", "L3", |
| 339 | "A0.X", "A0.W", "A1.X", "A1.W", "<res>", "<res>", "ASTAT", "RETS", |
| 340 | "<res>", "<res>", "<res>", "<res>", "<res>", "<res>", "<res>", "<res>", |
| 341 | "LC0", "LT0", "LB0", "LC1", "LT1", "LB1", "CYCLES", "CYCLES2", |
| 342 | "USP", "SEQSTAT", "SYSCFG", "RETI", "RETX", "RETN", "RETE", "EMUDAT", |
| 343 | }; |
| 344 | static const char * |
| 345 | get_allreg_name (int grp, int reg) |
| 346 | { |
| 347 | return greg_names[(grp << 3) | reg]; |
| 348 | } |
| 349 | static const char * |
| 350 | get_preg_name (int reg) |
| 351 | { |
| 352 | return get_allreg_name (1, reg); |
| 353 | } |
| 354 | |
| 355 | static bool |
| 356 | reg_is_reserved (int grp, int reg) |
| 357 | { |
| 358 | return (grp == 4 && (reg == 4 || reg == 5)) || (grp == 5); |
| 359 | } |
| 360 | |
| 361 | static bu32 * |
| 362 | get_allreg (SIM_CPU *cpu, int grp, int reg) |
| 363 | { |
| 364 | int fullreg = (grp << 3) | reg; |
| 365 | /* REG_R0, REG_R1, REG_R2, REG_R3, REG_R4, REG_R5, REG_R6, REG_R7, |
| 366 | REG_P0, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP, |
| 367 | REG_I0, REG_I1, REG_I2, REG_I3, REG_M0, REG_M1, REG_M2, REG_M3, |
| 368 | REG_B0, REG_B1, REG_B2, REG_B3, REG_L0, REG_L1, REG_L2, REG_L3, |
| 369 | REG_A0x, REG_A0w, REG_A1x, REG_A1w, , , REG_ASTAT, REG_RETS, |
| 370 | , , , , , , , , |
| 371 | REG_LC0, REG_LT0, REG_LB0, REG_LC1, REG_LT1, REG_LB1, REG_CYCLES, |
| 372 | REG_CYCLES2, |
| 373 | REG_USP, REG_SEQSTAT, REG_SYSCFG, REG_RETI, REG_RETX, REG_RETN, REG_RETE, |
| 374 | REG_LASTREG */ |
| 375 | switch (fullreg >> 2) |
| 376 | { |
| 377 | case 0: case 1: return &DREG (reg); |
| 378 | case 2: case 3: return &PREG (reg); |
| 379 | case 4: return &IREG (reg & 3); |
| 380 | case 5: return &MREG (reg & 3); |
| 381 | case 6: return &BREG (reg & 3); |
| 382 | case 7: return &LREG (reg & 3); |
| 383 | default: |
| 384 | switch (fullreg) |
| 385 | { |
| 386 | case 32: return &AXREG (0); |
| 387 | case 33: return &AWREG (0); |
| 388 | case 34: return &AXREG (1); |
| 389 | case 35: return &AWREG (1); |
| 390 | case 39: return &RETSREG; |
| 391 | case 48: return &LCREG (0); |
| 392 | case 49: return <REG (0); |
| 393 | case 50: return &LBREG (0); |
| 394 | case 51: return &LCREG (1); |
| 395 | case 52: return <REG (1); |
| 396 | case 53: return &LBREG (1); |
| 397 | case 54: return &CYCLESREG; |
| 398 | case 55: return &CYCLES2REG; |
| 399 | case 56: return &USPREG; |
| 400 | case 57: return &SEQSTATREG; |
| 401 | case 58: return &SYSCFGREG; |
| 402 | case 59: return &RETIREG; |
| 403 | case 60: return &RETXREG; |
| 404 | case 61: return &RETNREG; |
| 405 | case 62: return &RETEREG; |
| 406 | case 63: return &EMUDAT_INREG; |
| 407 | } |
| 408 | illegal_instruction (cpu); |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | static const char * |
| 413 | amod0 (int s0, int x0) |
| 414 | { |
| 415 | static const char * const mod0[] = { |
| 416 | "", " (S)", " (CO)", " (SCO)", |
| 417 | }; |
| 418 | int i = s0 + (x0 << 1); |
| 419 | |
| 420 | if (i < ARRAY_SIZE (mod0)) |
| 421 | return mod0[i]; |
| 422 | else |
| 423 | return ""; |
| 424 | } |
| 425 | |
| 426 | static const char * |
| 427 | amod0amod2 (int s0, int x0, int aop0) |
| 428 | { |
| 429 | static const char * const mod02[] = { |
| 430 | "", " (S)", " (CO)", " (SCO)", |
| 431 | "", "", "", "", |
| 432 | " (ASR)", " (S, ASR)", " (CO, ASR)", " (SCO, ASR)", |
| 433 | " (ASL)", " (S, ASL)", " (CO, ASL)", " (SCO, ASL)", |
| 434 | }; |
| 435 | int i = s0 + (x0 << 1) + (aop0 << 2); |
| 436 | |
| 437 | if (i < ARRAY_SIZE (mod02)) |
| 438 | return mod02[i]; |
| 439 | else |
| 440 | return ""; |
| 441 | } |
| 442 | |
| 443 | static const char * |
| 444 | amod1 (int s0, int x0) |
| 445 | { |
| 446 | static const char * const mod1[] = { |
| 447 | " (NS)", " (S)", |
| 448 | }; |
| 449 | int i = s0 + (x0 << 1); |
| 450 | |
| 451 | if (i < ARRAY_SIZE (mod1)) |
| 452 | return mod1[i]; |
| 453 | else |
| 454 | return ""; |
| 455 | } |
| 456 | |
| 457 | static const char * |
| 458 | mac_optmode (int mmod, int MM) |
| 459 | { |
| 460 | static const char * const omode[] = { |
| 461 | [(M_S2RND << 1) + 0] = " (S2RND)", |
| 462 | [(M_T << 1) + 0] = " (T)", |
| 463 | [(M_W32 << 1) + 0] = " (W32)", |
| 464 | [(M_FU << 1) + 0] = " (FU)", |
| 465 | [(M_TFU << 1) + 0] = " (TFU)", |
| 466 | [(M_IS << 1) + 0] = " (IS)", |
| 467 | [(M_ISS2 << 1) + 0] = " (ISS2)", |
| 468 | [(M_IH << 1) + 0] = " (IH)", |
| 469 | [(M_IU << 1) + 0] = " (IU)", |
| 470 | [(M_S2RND << 1) + 1] = " (M, S2RND)", |
| 471 | [(M_T << 1) + 1] = " (M, T)", |
| 472 | [(M_W32 << 1) + 1] = " (M, W32)", |
| 473 | [(M_FU << 1) + 1] = " (M, FU)", |
| 474 | [(M_TFU << 1) + 1] = " (M, TFU)", |
| 475 | [(M_IS << 1) + 1] = " (M, IS)", |
| 476 | [(M_ISS2 << 1) + 1] = " (M, ISS2)", |
| 477 | [(M_IH << 1) + 1] = " (M, IH)", |
| 478 | [(M_IU << 1) + 1] = " (M, IU)", |
| 479 | }; |
| 480 | int i = MM + (mmod << 1); |
| 481 | |
| 482 | if (i < ARRAY_SIZE (omode) && omode[i]) |
| 483 | return omode[i]; |
| 484 | else |
| 485 | return ""; |
| 486 | } |
| 487 | |
| 488 | static const char * |
| 489 | get_store_name (SIM_CPU *cpu, bu32 *p) |
| 490 | { |
| 491 | if (p >= &DREG (0) && p <= &CYCLESREG) |
| 492 | return greg_names[p - &DREG (0)]; |
| 493 | else if (p == &AXREG (0)) |
| 494 | return greg_names[4 * 8 + 0]; |
| 495 | else if (p == &AWREG (0)) |
| 496 | return greg_names[4 * 8 + 1]; |
| 497 | else if (p == &AXREG (1)) |
| 498 | return greg_names[4 * 8 + 2]; |
| 499 | else if (p == &AWREG (1)) |
| 500 | return greg_names[4 * 8 + 3]; |
| 501 | else if (p == &ASTATREG (av0)) |
| 502 | return "ASTAT[av0]"; |
| 503 | else if (p == &ASTATREG (av0s)) |
| 504 | return "ASTAT[av0s]"; |
| 505 | else if (p == &ASTATREG (av1)) |
| 506 | return "ASTAT[av1]"; |
| 507 | else if (p == &ASTATREG (av1s)) |
| 508 | return "ASTAT[av1s]"; |
| 509 | else if (p == &ASTATREG (v)) |
| 510 | return "ASTAT[v]"; |
| 511 | else if (p == &ASTATREG (vs)) |
| 512 | return "ASTAT[vs]"; |
| 513 | else if (p == &ASTATREG (v_copy)) |
| 514 | return "ASTAT[v_copy]"; |
| 515 | else if (p == &ASTATREG (az)) |
| 516 | return "ASTAT[az]"; |
| 517 | else if (p == &ASTATREG (an)) |
| 518 | return "ASTAT[an]"; |
| 519 | else if (p == &ASTATREG (az)) |
| 520 | return "ASTAT[az]"; |
| 521 | else if (p == &ASTATREG (ac0)) |
| 522 | return "ASTAT[ac0]"; |
| 523 | else if (p == &ASTATREG (ac0_copy)) |
| 524 | return "ASTAT[ac0_copy]"; |
| 525 | else |
| 526 | { |
| 527 | /* Worry about this when we start to STORE() it. */ |
| 528 | sim_io_eprintf (CPU_STATE (cpu), "STORE(): unknown register\n"); |
| 529 | abort (); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | static void |
| 534 | queue_store (SIM_CPU *cpu, bu32 *addr, bu32 val) |
| 535 | { |
| 536 | struct store *s = &BFIN_CPU_STATE.stores[BFIN_CPU_STATE.n_stores]; |
| 537 | s->addr = addr; |
| 538 | s->val = val; |
| 539 | TRACE_REGISTER (cpu, "queuing write %s = %#x", |
| 540 | get_store_name (cpu, addr), val); |
| 541 | ++BFIN_CPU_STATE.n_stores; |
| 542 | } |
| 543 | #define STORE(X, Y) \ |
| 544 | do { \ |
| 545 | if (BFIN_CPU_STATE.n_stores == 20) abort (); \ |
| 546 | queue_store (cpu, &(X), (Y)); \ |
| 547 | } while (0) |
| 548 | |
| 549 | static void |
| 550 | setflags_nz (SIM_CPU *cpu, bu32 val) |
| 551 | { |
| 552 | SET_ASTATREG (az, val == 0); |
| 553 | SET_ASTATREG (an, val >> 31); |
| 554 | } |
| 555 | |
| 556 | static void |
| 557 | setflags_nz_2x16 (SIM_CPU *cpu, bu32 val) |
| 558 | { |
| 559 | SET_ASTATREG (an, (bs16)val < 0 || (bs16)(val >> 16) < 0); |
| 560 | SET_ASTATREG (az, (bs16)val == 0 || (bs16)(val >> 16) == 0); |
| 561 | } |
| 562 | |
| 563 | static void |
| 564 | setflags_logical (SIM_CPU *cpu, bu32 val) |
| 565 | { |
| 566 | setflags_nz (cpu, val); |
| 567 | SET_ASTATREG (ac0, 0); |
| 568 | SET_ASTATREG (v, 0); |
| 569 | } |
| 570 | |
| 571 | static bu32 |
| 572 | add_brev (bu32 addend1, bu32 addend2) |
| 573 | { |
| 574 | bu32 mask, b, r; |
| 575 | int i, cy; |
| 576 | |
| 577 | mask = 0x80000000; |
| 578 | r = 0; |
| 579 | cy = 0; |
| 580 | |
| 581 | for (i = 31; i >= 0; --i) |
| 582 | { |
| 583 | b = ((addend1 & mask) >> i) + ((addend2 & mask) >> i); |
| 584 | b += cy; |
| 585 | cy = b >> 1; |
| 586 | b &= 1; |
| 587 | r |= b << i; |
| 588 | mask >>= 1; |
| 589 | } |
| 590 | |
| 591 | return r; |
| 592 | } |
| 593 | |
| 594 | /* This is a bit crazy, but we want to simulate the hardware behavior exactly |
| 595 | rather than worry about the circular buffers being used correctly. Which |
| 596 | isn't to say there isn't room for improvement here, just that we want to |
| 597 | be conservative. See also dagsub(). */ |
| 598 | static bu32 |
| 599 | dagadd (SIM_CPU *cpu, int dagno, bs32 M) |
| 600 | { |
| 601 | bu64 i = IREG (dagno); |
| 602 | bu64 l = LREG (dagno); |
| 603 | bu64 b = BREG (dagno); |
| 604 | bu64 m = (bu32)M; |
| 605 | |
| 606 | bu64 LB, IM, IML; |
| 607 | bu32 im32, iml32, lb32, res; |
| 608 | bu64 msb, car; |
| 609 | |
| 610 | /* A naïve implementation that mostly works: |
| 611 | res = i + m; |
| 612 | if (l && res >= b + l) |
| 613 | res -= l; |
| 614 | STORE (IREG (dagno), res); |
| 615 | */ |
| 616 | |
| 617 | msb = (bu64)1 << 31; |
| 618 | car = (bu64)1 << 32; |
| 619 | |
| 620 | IM = i + m; |
| 621 | im32 = IM; |
| 622 | LB = l + b; |
| 623 | lb32 = LB; |
| 624 | |
| 625 | if (M < 0) |
| 626 | { |
| 627 | IML = i + m + l; |
| 628 | iml32 = IML; |
| 629 | if ((i & msb) || (IM & car)) |
| 630 | res = (im32 < b) ? iml32 : im32; |
| 631 | else |
| 632 | res = (im32 < b) ? im32 : iml32; |
| 633 | } |
| 634 | else |
| 635 | { |
| 636 | IML = i + m - l; |
| 637 | iml32 = IML; |
| 638 | if ((IM & car) == (LB & car)) |
| 639 | res = (im32 < lb32) ? im32 : iml32; |
| 640 | else |
| 641 | res = (im32 < lb32) ? iml32 : im32; |
| 642 | } |
| 643 | |
| 644 | STORE (IREG (dagno), res); |
| 645 | return res; |
| 646 | } |
| 647 | |
| 648 | /* See dagadd() notes above. */ |
| 649 | static bu32 |
| 650 | dagsub (SIM_CPU *cpu, int dagno, bs32 M) |
| 651 | { |
| 652 | bu64 i = IREG (dagno); |
| 653 | bu64 l = LREG (dagno); |
| 654 | bu64 b = BREG (dagno); |
| 655 | bu64 m = (bu32)M; |
| 656 | |
| 657 | bu64 mbar = (bu32)(~m + 1); |
| 658 | bu64 LB, IM, IML; |
| 659 | bu32 b32, im32, iml32, lb32, res; |
| 660 | bu64 msb, car; |
| 661 | |
| 662 | /* A naïve implementation that mostly works: |
| 663 | res = i - m; |
| 664 | if (l && newi < b) |
| 665 | newi += l; |
| 666 | STORE (IREG (dagno), newi); |
| 667 | */ |
| 668 | |
| 669 | msb = (bu64)1 << 31; |
| 670 | car = (bu64)1 << 32; |
| 671 | |
| 672 | IM = i + mbar; |
| 673 | im32 = IM; |
| 674 | LB = l + b; |
| 675 | lb32 = LB; |
| 676 | |
| 677 | if (M < 0) |
| 678 | { |
| 679 | IML = i + mbar - l; |
| 680 | iml32 = IML; |
| 681 | if (!!((i & msb) && (IM & car)) == !!(LB & car)) |
| 682 | res = (im32 < lb32) ? im32 : iml32; |
| 683 | else |
| 684 | res = (im32 < lb32) ? iml32 : im32; |
| 685 | } |
| 686 | else |
| 687 | { |
| 688 | IML = i + mbar + l; |
| 689 | iml32 = IML; |
| 690 | b32 = b; |
| 691 | if (M == 0 || IM & car) |
| 692 | res = (im32 < b32) ? iml32 : im32; |
| 693 | else |
| 694 | res = (im32 < b32) ? im32 : iml32; |
| 695 | } |
| 696 | |
| 697 | STORE (IREG (dagno), res); |
| 698 | return res; |
| 699 | } |
| 700 | |
| 701 | static bu40 |
| 702 | ashiftrt (SIM_CPU *cpu, bu40 val, int cnt, int size) |
| 703 | { |
| 704 | int real_cnt = cnt > size ? size : cnt; |
| 705 | bu40 sgn = ~(((val & 0xFFFFFFFFFFull) >> (size - 1)) - 1); |
| 706 | int sgncnt = size - real_cnt; |
| 707 | if (sgncnt > 16) |
| 708 | sgn <<= 16, sgncnt -= 16; |
| 709 | sgn <<= sgncnt; |
| 710 | if (real_cnt > 16) |
| 711 | val >>= 16, real_cnt -= 16; |
| 712 | val >>= real_cnt; |
| 713 | val |= sgn; |
| 714 | SET_ASTATREG (an, val >> (size - 1)); |
| 715 | SET_ASTATREG (az, val == 0); |
| 716 | /* XXX: Need to check ASTAT[v] behavior here. */ |
| 717 | SET_ASTATREG (v, 0); |
| 718 | return val; |
| 719 | } |
| 720 | |
| 721 | static bu64 |
| 722 | lshiftrt (SIM_CPU *cpu, bu64 val, int cnt, int size) |
| 723 | { |
| 724 | int real_cnt = cnt > size ? size : cnt; |
| 725 | if (real_cnt > 16) |
| 726 | val >>= 16, real_cnt -= 16; |
| 727 | val >>= real_cnt; |
| 728 | switch (size) |
| 729 | { |
| 730 | case 16: |
| 731 | val &= 0xFFFF; |
| 732 | break; |
| 733 | case 32: |
| 734 | val &= 0xFFFFFFFF; |
| 735 | break; |
| 736 | case 40: |
| 737 | val &= 0xFFFFFFFFFFull; |
| 738 | break; |
| 739 | default: |
| 740 | illegal_instruction (cpu); |
| 741 | break; |
| 742 | } |
| 743 | SET_ASTATREG (an, val >> (size - 1)); |
| 744 | SET_ASTATREG (az, val == 0); |
| 745 | SET_ASTATREG (v, 0); |
| 746 | return val; |
| 747 | } |
| 748 | |
| 749 | static bu64 |
| 750 | lshift (SIM_CPU *cpu, bu64 val, int cnt, int size, bool saturate) |
| 751 | { |
| 752 | int i, j, real_cnt = cnt > size ? size : cnt; |
| 753 | bu64 sgn = ~((val >> (size - 1)) - 1); |
| 754 | int mask_cnt = size - 1; |
| 755 | bu64 masked, new_val = val, tmp; |
| 756 | bu64 mask = ~0; |
| 757 | |
| 758 | mask <<= mask_cnt; |
| 759 | sgn <<= mask_cnt; |
| 760 | masked = val & mask; |
| 761 | |
| 762 | if (real_cnt > 16) |
| 763 | new_val <<= 16, real_cnt -= 16; |
| 764 | |
| 765 | new_val <<= real_cnt; |
| 766 | |
| 767 | masked = new_val & mask; |
| 768 | |
| 769 | /* If an operation would otherwise cause a positive value to overflow |
| 770 | and become negative, instead, saturation limits the result to the |
| 771 | maximum positive value for the size register being used. |
| 772 | |
| 773 | Conversely, if an operation would otherwise cause a negative value |
| 774 | to overflow and become positive, saturation limits the result to the |
| 775 | maximum negative value for the register size. |
| 776 | |
| 777 | However, it's a little more complex than looking at sign bits, we need |
| 778 | to see if we are shifting the sign information away... */ |
| 779 | tmp = val & ((~mask << 1) | 1); |
| 780 | |
| 781 | j = 0; |
| 782 | for (i = 1; i <= real_cnt && saturate; i++) |
| 783 | { |
| 784 | if ((tmp & ((bu64)1 << (size - 1))) != |
| 785 | (((val >> mask_cnt) & 0x1) << mask_cnt)) |
| 786 | j++; |
| 787 | tmp <<= 1; |
| 788 | } |
| 789 | saturate &= (!sgn && (new_val & (1 << mask_cnt))) |
| 790 | || (sgn && !(new_val & (1 << mask_cnt))); |
| 791 | |
| 792 | switch (size) |
| 793 | { |
| 794 | case 16: |
| 795 | if (j || (saturate && (new_val & mask))) |
| 796 | new_val = sgn == 0 ? 0x7fff : 0x8000, saturate = 1; |
| 797 | new_val &= 0xFFFF; |
| 798 | break; |
| 799 | case 32: |
| 800 | new_val &= 0xFFFFFFFF; |
| 801 | masked &= 0xFFFFFFFF; |
| 802 | if (j || (saturate && ((sgn != masked) || (!sgn && new_val == 0)))) |
| 803 | new_val = sgn == 0 ? 0x7fffffff : 0x80000000, saturate = 1; |
| 804 | break; |
| 805 | case 40: |
| 806 | new_val &= 0xFFFFFFFFFFull; |
| 807 | masked &= 0xFFFFFFFFFFull; |
| 808 | break; |
| 809 | default: |
| 810 | illegal_instruction (cpu); |
| 811 | break; |
| 812 | } |
| 813 | |
| 814 | SET_ASTATREG (an, new_val >> (size - 1)); |
| 815 | SET_ASTATREG (az, new_val == 0); |
| 816 | SET_ASTATREG (v, !!(saturate || j)); |
| 817 | if (saturate || j) |
| 818 | SET_ASTATREG (vs, 1); |
| 819 | return new_val; |
| 820 | } |
| 821 | |
| 822 | static bu32 |
| 823 | algn (bu32 l, bu32 h, bu32 aln) |
| 824 | { |
| 825 | if (aln == 0) |
| 826 | return l; |
| 827 | else |
| 828 | return (l >> (8 * aln)) | (h << (32 - 8 * aln)); |
| 829 | } |
| 830 | |
| 831 | static bu32 |
| 832 | saturate_s16 (bu64 val, bu32 *overflow) |
| 833 | { |
| 834 | if ((bs64)val < -0x8000ll) |
| 835 | { |
| 836 | if (overflow) |
| 837 | *overflow = 1; |
| 838 | return 0x8000; |
| 839 | } |
| 840 | if ((bs64)val > 0x7fff) |
| 841 | { |
| 842 | if (overflow) |
| 843 | *overflow = 1; |
| 844 | return 0x7fff; |
| 845 | } |
| 846 | return val & 0xffff; |
| 847 | } |
| 848 | |
| 849 | static bu40 |
| 850 | rot40 (bu40 val, int shift, bu32 *cc) |
| 851 | { |
| 852 | const int nbits = 40; |
| 853 | bu40 ret; |
| 854 | |
| 855 | shift = CLAMP (shift, -nbits, nbits); |
| 856 | if (shift == 0) |
| 857 | return val; |
| 858 | |
| 859 | /* Reduce everything to rotate left. */ |
| 860 | if (shift < 0) |
| 861 | shift += nbits + 1; |
| 862 | |
| 863 | ret = shift == nbits ? 0 : val << shift; |
| 864 | ret |= shift == 1 ? 0 : val >> ((nbits + 1) - shift); |
| 865 | ret |= (bu40)*cc << (shift - 1); |
| 866 | *cc = (val >> (nbits - shift)) & 1; |
| 867 | |
| 868 | return ret; |
| 869 | } |
| 870 | |
| 871 | static bu32 |
| 872 | rot32 (bu32 val, int shift, bu32 *cc) |
| 873 | { |
| 874 | const int nbits = 32; |
| 875 | bu32 ret; |
| 876 | |
| 877 | shift = CLAMP (shift, -nbits, nbits); |
| 878 | if (shift == 0) |
| 879 | return val; |
| 880 | |
| 881 | /* Reduce everything to rotate left. */ |
| 882 | if (shift < 0) |
| 883 | shift += nbits + 1; |
| 884 | |
| 885 | ret = shift == nbits ? 0 : val << shift; |
| 886 | ret |= shift == 1 ? 0 : val >> ((nbits + 1) - shift); |
| 887 | ret |= (bu32)*cc << (shift - 1); |
| 888 | *cc = (val >> (nbits - shift)) & 1; |
| 889 | |
| 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | static bu32 |
| 894 | add32 (SIM_CPU *cpu, bu32 a, bu32 b, int carry, int sat) |
| 895 | { |
| 896 | int flgs = (a >> 31) & 1; |
| 897 | int flgo = (b >> 31) & 1; |
| 898 | bu32 v = a + b; |
| 899 | int flgn = (v >> 31) & 1; |
| 900 | int overflow = (flgs ^ flgn) & (flgo ^ flgn); |
| 901 | |
| 902 | if (sat && overflow) |
| 903 | { |
| 904 | v = (bu32)1 << 31; |
| 905 | if (flgn) |
| 906 | v -= 1; |
| 907 | flgn = (v >> 31) & 1; |
| 908 | } |
| 909 | |
| 910 | SET_ASTATREG (an, flgn); |
| 911 | if (overflow) |
| 912 | SET_ASTATREG (vs, 1); |
| 913 | SET_ASTATREG (v, overflow); |
| 914 | ASTATREG (v_internal) |= overflow; |
| 915 | SET_ASTATREG (az, v == 0); |
| 916 | if (carry) |
| 917 | SET_ASTATREG (ac0, ~a < b); |
| 918 | |
| 919 | return v; |
| 920 | } |
| 921 | |
| 922 | static bu32 |
| 923 | sub32 (SIM_CPU *cpu, bu32 a, bu32 b, int carry, int sat, int parallel) |
| 924 | { |
| 925 | int flgs = (a >> 31) & 1; |
| 926 | int flgo = (b >> 31) & 1; |
| 927 | bu32 v = a - b; |
| 928 | int flgn = (v >> 31) & 1; |
| 929 | int overflow = (flgs ^ flgo) & (flgn ^ flgs); |
| 930 | |
| 931 | if (sat && overflow) |
| 932 | { |
| 933 | v = (bu32)1 << 31; |
| 934 | if (flgn) |
| 935 | v -= 1; |
| 936 | flgn = (v >> 31) & 1; |
| 937 | } |
| 938 | |
| 939 | if (!parallel || flgn) |
| 940 | SET_ASTATREG (an, flgn); |
| 941 | if (overflow) |
| 942 | SET_ASTATREG (vs, 1); |
| 943 | if (!parallel || overflow) |
| 944 | SET_ASTATREG (v, overflow); |
| 945 | if (!parallel || overflow) |
| 946 | ASTATREG (v_internal) |= overflow; |
| 947 | if (!parallel || v == 0) |
| 948 | SET_ASTATREG (az, v == 0); |
| 949 | if (carry && (!parallel || b <= a)) |
| 950 | SET_ASTATREG (ac0, b <= a); |
| 951 | |
| 952 | return v; |
| 953 | } |
| 954 | |
| 955 | static bu32 |
| 956 | add16 (SIM_CPU *cpu, bu16 a, bu16 b, bu32 *carry, bu32 *overfl, |
| 957 | bu32 *zero, bu32 *neg, int sat, int scale) |
| 958 | { |
| 959 | int flgs = (a >> 15) & 1; |
| 960 | int flgo = (b >> 15) & 1; |
| 961 | bs64 v = (bs16)a + (bs16)b; |
| 962 | int flgn = (v >> 15) & 1; |
| 963 | int overflow = (flgs ^ flgn) & (flgo ^ flgn); |
| 964 | |
| 965 | switch (scale) |
| 966 | { |
| 967 | case 0: |
| 968 | break; |
| 969 | case 2: |
| 970 | /* (ASR) */ |
| 971 | v = (a >> 1) + (a & 0x8000) + (b >> 1) + (b & 0x8000) |
| 972 | + (((a & 1) + (b & 1)) >> 1); |
| 973 | v |= -(v & 0x8000); |
| 974 | break; |
| 975 | case 3: |
| 976 | /* (ASL) */ |
| 977 | v = (v << 1); |
| 978 | break; |
| 979 | default: |
| 980 | illegal_instruction (cpu); |
| 981 | } |
| 982 | |
| 983 | flgn = (v >> 15) & 1; |
| 984 | overflow = (flgs ^ flgn) & (flgo ^ flgn); |
| 985 | |
| 986 | if (v > (bs64)0xffff) |
| 987 | overflow = 1; |
| 988 | |
| 989 | if (sat) |
| 990 | v = saturate_s16 (v, 0); |
| 991 | |
| 992 | if (neg) |
| 993 | *neg |= (v >> 15) & 1; |
| 994 | if (overfl) |
| 995 | *overfl |= overflow; |
| 996 | if (zero) |
| 997 | *zero |= (v & 0xFFFF) == 0; |
| 998 | if (carry) |
| 999 | *carry |= ((bu16)~a < (bu16)b); |
| 1000 | |
| 1001 | return v & 0xffff; |
| 1002 | } |
| 1003 | |
| 1004 | static bu32 |
| 1005 | sub16 (SIM_CPU *cpu, bu16 a, bu16 b, bu32 *carry, bu32 *overfl, |
| 1006 | bu32 *zero, bu32 *neg, int sat, int scale) |
| 1007 | { |
| 1008 | int flgs = (a >> 15) & 1; |
| 1009 | int flgo = (b >> 15) & 1; |
| 1010 | bs64 v = (bs16)a - (bs16)b; |
| 1011 | int flgn = (v >> 15) & 1; |
| 1012 | int overflow = (flgs ^ flgo) & (flgn ^ flgs); |
| 1013 | |
| 1014 | switch (scale) |
| 1015 | { |
| 1016 | case 0: |
| 1017 | break; |
| 1018 | case 2: |
| 1019 | /* (ASR) */ |
| 1020 | if (sat) |
| 1021 | v = ((a >> 1) + (a & 0x8000)) - ( (b >> 1) + (b & 0x8000)) |
| 1022 | + (((a & 1)-(b & 1))); |
| 1023 | else |
| 1024 | { |
| 1025 | v = ((v & 0xFFFF) >> 1); |
| 1026 | if ((!flgs & !flgo & flgn) |
| 1027 | || (flgs & !flgo & !flgn) |
| 1028 | || (flgs & flgo & flgn) |
| 1029 | || (flgs & !flgo & flgn)) |
| 1030 | v |= 0x8000; |
| 1031 | } |
| 1032 | v |= -(v & 0x8000); |
| 1033 | flgn = (v >> 15) & 1; |
| 1034 | overflow = (flgs ^ flgo) & (flgn ^ flgs); |
| 1035 | break; |
| 1036 | case 3: |
| 1037 | /* (ASL) */ |
| 1038 | v <<= 1; |
| 1039 | if (v > (bs64)0x7fff || v < (bs64)-0xffff) |
| 1040 | overflow = 1; |
| 1041 | break; |
| 1042 | default: |
| 1043 | illegal_instruction (cpu); |
| 1044 | } |
| 1045 | |
| 1046 | if (sat) |
| 1047 | { |
| 1048 | v = saturate_s16 (v, 0); |
| 1049 | } |
| 1050 | if (neg) |
| 1051 | *neg |= (v >> 15) & 1; |
| 1052 | if (zero) |
| 1053 | *zero |= (v & 0xFFFF) == 0; |
| 1054 | if (overfl) |
| 1055 | *overfl |= overflow; |
| 1056 | if (carry) |
| 1057 | *carry |= (bu16)b <= (bu16)a; |
| 1058 | return v; |
| 1059 | } |
| 1060 | |
| 1061 | static bu32 |
| 1062 | min32 (SIM_CPU *cpu, bu32 a, bu32 b) |
| 1063 | { |
| 1064 | int val = a; |
| 1065 | if ((bs32)a > (bs32)b) |
| 1066 | val = b; |
| 1067 | setflags_nz (cpu, val); |
| 1068 | SET_ASTATREG (v, 0); |
| 1069 | return val; |
| 1070 | } |
| 1071 | |
| 1072 | static bu32 |
| 1073 | max32 (SIM_CPU *cpu, bu32 a, bu32 b) |
| 1074 | { |
| 1075 | int val = a; |
| 1076 | if ((bs32)a < (bs32)b) |
| 1077 | val = b; |
| 1078 | setflags_nz (cpu, val); |
| 1079 | SET_ASTATREG (v, 0); |
| 1080 | return val; |
| 1081 | } |
| 1082 | |
| 1083 | static bu32 |
| 1084 | min2x16 (SIM_CPU *cpu, bu32 a, bu32 b) |
| 1085 | { |
| 1086 | int val = a; |
| 1087 | if ((bs16)a > (bs16)b) |
| 1088 | val = (val & 0xFFFF0000) | (b & 0xFFFF); |
| 1089 | if ((bs16)(a >> 16) > (bs16)(b >> 16)) |
| 1090 | val = (val & 0xFFFF) | (b & 0xFFFF0000); |
| 1091 | setflags_nz_2x16 (cpu, val); |
| 1092 | SET_ASTATREG (v, 0); |
| 1093 | return val; |
| 1094 | } |
| 1095 | |
| 1096 | static bu32 |
| 1097 | max2x16 (SIM_CPU *cpu, bu32 a, bu32 b) |
| 1098 | { |
| 1099 | int val = a; |
| 1100 | if ((bs16)a < (bs16)b) |
| 1101 | val = (val & 0xFFFF0000) | (b & 0xFFFF); |
| 1102 | if ((bs16)(a >> 16) < (bs16)(b >> 16)) |
| 1103 | val = (val & 0xFFFF) | (b & 0xFFFF0000); |
| 1104 | setflags_nz_2x16 (cpu, val); |
| 1105 | SET_ASTATREG (v, 0); |
| 1106 | return val; |
| 1107 | } |
| 1108 | |
| 1109 | static bu32 |
| 1110 | add_and_shift (SIM_CPU *cpu, bu32 a, bu32 b, int shift) |
| 1111 | { |
| 1112 | int v; |
| 1113 | ASTATREG (v_internal) = 0; |
| 1114 | v = add32 (cpu, a, b, 0, 0); |
| 1115 | while (shift-- > 0) |
| 1116 | { |
| 1117 | int x = (v >> 30) & 0x3; |
| 1118 | if (x == 1 || x == 2) |
| 1119 | ASTATREG (v_internal) = 1; |
| 1120 | v <<= 1; |
| 1121 | } |
| 1122 | SET_ASTATREG (az, v == 0); |
| 1123 | SET_ASTATREG (an, v & 0x80000000); |
| 1124 | SET_ASTATREG (v, ASTATREG (v_internal)); |
| 1125 | if (ASTATREG (v)) |
| 1126 | SET_ASTATREG (vs, 1); |
| 1127 | return v; |
| 1128 | } |
| 1129 | |
| 1130 | static bu32 |
| 1131 | xor_reduce (bu64 acc0, bu64 acc1) |
| 1132 | { |
| 1133 | int i; |
| 1134 | bu32 v = 0; |
| 1135 | for (i = 0; i < 40; ++i) |
| 1136 | { |
| 1137 | v ^= (acc0 & acc1 & 1); |
| 1138 | acc0 >>= 1; |
| 1139 | acc1 >>= 1; |
| 1140 | } |
| 1141 | return v; |
| 1142 | } |
| 1143 | |
| 1144 | /* DIVS ( Dreg, Dreg ) ; |
| 1145 | Initialize for DIVQ. Set the AQ status bit based on the signs of |
| 1146 | the 32-bit dividend and the 16-bit divisor. Left shift the dividend |
| 1147 | one bit. Copy AQ into the dividend LSB. */ |
| 1148 | static bu32 |
| 1149 | divs (SIM_CPU *cpu, bu32 pquo, bu16 divisor) |
| 1150 | { |
| 1151 | bu16 r = pquo >> 16; |
| 1152 | int aq; |
| 1153 | |
| 1154 | aq = (r ^ divisor) >> 15; /* Extract msb's and compute quotient bit. */ |
| 1155 | SET_ASTATREG (aq, aq); /* Update global quotient state. */ |
| 1156 | |
| 1157 | pquo <<= 1; |
| 1158 | pquo |= aq; |
| 1159 | pquo = (pquo & 0x1FFFF) | (r << 17); |
| 1160 | return pquo; |
| 1161 | } |
| 1162 | |
| 1163 | /* DIVQ ( Dreg, Dreg ) ; |
| 1164 | Based on AQ status bit, either add or subtract the divisor from |
| 1165 | the dividend. Then set the AQ status bit based on the MSBs of the |
| 1166 | 32-bit dividend and the 16-bit divisor. Left shift the dividend one |
| 1167 | bit. Copy the logical inverse of AQ into the dividend LSB. */ |
| 1168 | static bu32 |
| 1169 | divq (SIM_CPU *cpu, bu32 pquo, bu16 divisor) |
| 1170 | { |
| 1171 | unsigned short af = pquo >> 16; |
| 1172 | unsigned short r; |
| 1173 | int aq; |
| 1174 | |
| 1175 | if (ASTATREG (aq)) |
| 1176 | r = divisor + af; |
| 1177 | else |
| 1178 | r = af - divisor; |
| 1179 | |
| 1180 | aq = (r ^ divisor) >> 15; /* Extract msb's and compute quotient bit. */ |
| 1181 | SET_ASTATREG (aq, aq); /* Update global quotient state. */ |
| 1182 | |
| 1183 | pquo <<= 1; |
| 1184 | pquo |= !aq; |
| 1185 | pquo = (pquo & 0x1FFFF) | (r << 17); |
| 1186 | return pquo; |
| 1187 | } |
| 1188 | |
| 1189 | /* ONES ( Dreg ) ; |
| 1190 | Count the number of bits set to 1 in the 32bit value. */ |
| 1191 | static bu32 |
| 1192 | ones (bu32 val) |
| 1193 | { |
| 1194 | bu32 i; |
| 1195 | bu32 ret; |
| 1196 | |
| 1197 | ret = 0; |
| 1198 | for (i = 0; i < 32; ++i) |
| 1199 | ret += !!(val & (1 << i)); |
| 1200 | |
| 1201 | return ret; |
| 1202 | } |
| 1203 | |
| 1204 | static void |
| 1205 | reg_check_sup (SIM_CPU *cpu, int grp, int reg) |
| 1206 | { |
| 1207 | if (grp == 7) |
| 1208 | cec_require_supervisor (cpu); |
| 1209 | } |
| 1210 | |
| 1211 | static void |
| 1212 | reg_write (SIM_CPU *cpu, int grp, int reg, bu32 value) |
| 1213 | { |
| 1214 | bu32 *whichreg; |
| 1215 | |
| 1216 | /* ASTAT is special! */ |
| 1217 | if (grp == 4 && reg == 6) |
| 1218 | { |
| 1219 | SET_ASTAT (value); |
| 1220 | return; |
| 1221 | } |
| 1222 | |
| 1223 | /* Check supervisor after get_allreg() so exception order is correct. */ |
| 1224 | whichreg = get_allreg (cpu, grp, reg); |
| 1225 | reg_check_sup (cpu, grp, reg); |
| 1226 | |
| 1227 | if (whichreg == &CYCLES2REG) |
| 1228 | /* Writes to CYCLES2 goes to the shadow. */ |
| 1229 | whichreg = &CYCLES2SHDREG; |
| 1230 | else if (whichreg == &SEQSTATREG) |
| 1231 | /* Register is read only -- discard writes. */ |
| 1232 | return; |
| 1233 | else if (whichreg == &EMUDAT_INREG) |
| 1234 | /* Writes to EMUDAT goes to the output. */ |
| 1235 | whichreg = &EMUDAT_OUTREG; |
| 1236 | else if (whichreg == <REG (0) || whichreg == <REG (1)) |
| 1237 | /* Writes to LT clears LSB automatically. */ |
| 1238 | value &= ~0x1; |
| 1239 | else if (whichreg == &AXREG (0) || whichreg == &AXREG (1)) |
| 1240 | value &= 0xFF; |
| 1241 | |
| 1242 | TRACE_REGISTER (cpu, "wrote %s = %#x", get_allreg_name (grp, reg), value); |
| 1243 | |
| 1244 | *whichreg = value; |
| 1245 | } |
| 1246 | |
| 1247 | static bu32 |
| 1248 | reg_read (SIM_CPU *cpu, int grp, int reg) |
| 1249 | { |
| 1250 | bu32 *whichreg; |
| 1251 | bu32 value; |
| 1252 | |
| 1253 | /* ASTAT is special! */ |
| 1254 | if (grp == 4 && reg == 6) |
| 1255 | return ASTAT; |
| 1256 | |
| 1257 | /* Check supervisor after get_allreg() so exception order is correct. */ |
| 1258 | whichreg = get_allreg (cpu, grp, reg); |
| 1259 | reg_check_sup (cpu, grp, reg); |
| 1260 | |
| 1261 | value = *whichreg; |
| 1262 | |
| 1263 | if (whichreg == &CYCLESREG) |
| 1264 | /* Reads of CYCLES reloads CYCLES2 from the shadow. */ |
| 1265 | SET_CYCLES2REG (CYCLES2SHDREG); |
| 1266 | else if ((whichreg == &AXREG (1) || whichreg == &AXREG (0)) && (value & 0x80)) |
| 1267 | /* Sign extend if necessary. */ |
| 1268 | value |= 0xFFFFFF00; |
| 1269 | |
| 1270 | return value; |
| 1271 | } |
| 1272 | |
| 1273 | static bu64 |
| 1274 | get_extended_cycles (SIM_CPU *cpu) |
| 1275 | { |
| 1276 | return ((bu64)CYCLES2SHDREG << 32) | CYCLESREG; |
| 1277 | } |
| 1278 | |
| 1279 | /* We can't re-use sim_events_time() because the CYCLES registers may be |
| 1280 | written/cleared/reset/stopped/started at any time by software. */ |
| 1281 | static void |
| 1282 | cycles_inc (SIM_CPU *cpu, bu32 inc) |
| 1283 | { |
| 1284 | bu64 cycles; |
| 1285 | bu32 cycles2; |
| 1286 | |
| 1287 | if (!(SYSCFGREG & SYSCFG_CCEN)) |
| 1288 | return; |
| 1289 | |
| 1290 | cycles = get_extended_cycles (cpu) + inc; |
| 1291 | SET_CYCLESREG (cycles); |
| 1292 | cycles2 = cycles >> 32; |
| 1293 | if (CYCLES2SHDREG != cycles2) |
| 1294 | SET_CYCLES2SHDREG (cycles2); |
| 1295 | } |
| 1296 | |
| 1297 | static bu64 |
| 1298 | get_unextended_acc (SIM_CPU *cpu, int which) |
| 1299 | { |
| 1300 | return ((bu64)(AXREG (which) & 0xff) << 32) | AWREG (which); |
| 1301 | } |
| 1302 | |
| 1303 | static bu64 |
| 1304 | get_extended_acc (SIM_CPU *cpu, int which) |
| 1305 | { |
| 1306 | bu64 acc = AXREG (which); |
| 1307 | /* Sign extend accumulator values before adding. */ |
| 1308 | if (acc & 0x80) |
| 1309 | acc |= -0x80; |
| 1310 | else |
| 1311 | acc &= 0xFF; |
| 1312 | acc <<= 32; |
| 1313 | acc |= AWREG (which); |
| 1314 | return acc; |
| 1315 | } |
| 1316 | |
| 1317 | /* Perform a multiplication of D registers SRC0 and SRC1, sign- or |
| 1318 | zero-extending the result to 64 bit. H0 and H1 determine whether the |
| 1319 | high part or the low part of the source registers is used. Store 1 in |
| 1320 | *PSAT if saturation occurs, 0 otherwise. */ |
| 1321 | static bu64 |
| 1322 | decode_multfunc (SIM_CPU *cpu, int h0, int h1, int src0, int src1, int mmod, |
| 1323 | int MM, bu32 *psat) |
| 1324 | { |
| 1325 | bu32 s0 = DREG (src0), s1 = DREG (src1); |
| 1326 | bu32 sgn0, sgn1; |
| 1327 | bu32 val; |
| 1328 | bu64 val1; |
| 1329 | |
| 1330 | if (h0) |
| 1331 | s0 >>= 16; |
| 1332 | |
| 1333 | if (h1) |
| 1334 | s1 >>= 16; |
| 1335 | |
| 1336 | s0 &= 0xffff; |
| 1337 | s1 &= 0xffff; |
| 1338 | |
| 1339 | sgn0 = -(s0 & 0x8000); |
| 1340 | sgn1 = -(s1 & 0x8000); |
| 1341 | |
| 1342 | if (MM) |
| 1343 | s0 |= sgn0; |
| 1344 | else |
| 1345 | switch (mmod) |
| 1346 | { |
| 1347 | case 0: |
| 1348 | case M_S2RND: |
| 1349 | case M_T: |
| 1350 | case M_IS: |
| 1351 | case M_ISS2: |
| 1352 | case M_IH: |
| 1353 | case M_W32: |
| 1354 | s0 |= sgn0; |
| 1355 | s1 |= sgn1; |
| 1356 | break; |
| 1357 | case M_FU: |
| 1358 | case M_IU: |
| 1359 | case M_TFU: |
| 1360 | break; |
| 1361 | default: |
| 1362 | illegal_instruction (cpu); |
| 1363 | } |
| 1364 | |
| 1365 | val = s0 * s1; |
| 1366 | /* Perform shift correction if appropriate for the mode. */ |
| 1367 | *psat = 0; |
| 1368 | if (!MM && (mmod == 0 || mmod == M_T || mmod == M_S2RND || mmod == M_W32)) |
| 1369 | { |
| 1370 | if (val == 0x40000000) |
| 1371 | { |
| 1372 | if (mmod == M_W32) |
| 1373 | val = 0x7fffffff; |
| 1374 | else |
| 1375 | val = 0x80000000; |
| 1376 | *psat = 1; |
| 1377 | } |
| 1378 | else |
| 1379 | val <<= 1; |
| 1380 | } |
| 1381 | val1 = val; |
| 1382 | |
| 1383 | if (mmod == 0 || mmod == M_IS || mmod == M_T || mmod == M_S2RND |
| 1384 | || mmod == M_ISS2 || mmod == M_IH || (MM && mmod == M_FU)) |
| 1385 | val1 |= -(val1 & 0x80000000); |
| 1386 | |
| 1387 | if (*psat) |
| 1388 | val1 &= 0xFFFFFFFFull; |
| 1389 | |
| 1390 | return val1; |
| 1391 | } |
| 1392 | |
| 1393 | static bu40 |
| 1394 | saturate_s40_astat (bu64 val, bu32 *v) |
| 1395 | { |
| 1396 | if ((bs64)val < -((bs64)1 << 39)) |
| 1397 | { |
| 1398 | *v = 1; |
| 1399 | return -((bs64)1 << 39); |
| 1400 | } |
| 1401 | else if ((bs64)val >= ((bs64)1 << 39) - 1) |
| 1402 | { |
| 1403 | *v = 1; |
| 1404 | return ((bu64)1 << 39) - 1; |
| 1405 | } |
| 1406 | *v = 0; /* No overflow. */ |
| 1407 | return val; |
| 1408 | } |
| 1409 | |
| 1410 | static bu40 |
| 1411 | saturate_s40 (bu64 val) |
| 1412 | { |
| 1413 | bu32 v; |
| 1414 | return saturate_s40_astat (val, &v); |
| 1415 | } |
| 1416 | |
| 1417 | static bu32 |
| 1418 | saturate_s32 (bu64 val, bu32 *overflow) |
| 1419 | { |
| 1420 | if ((bs64)val < -0x80000000ll) |
| 1421 | { |
| 1422 | if (overflow) |
| 1423 | *overflow = 1; |
| 1424 | return 0x80000000; |
| 1425 | } |
| 1426 | if ((bs64)val > 0x7fffffff) |
| 1427 | { |
| 1428 | if (overflow) |
| 1429 | *overflow = 1; |
| 1430 | return 0x7fffffff; |
| 1431 | } |
| 1432 | return val; |
| 1433 | } |
| 1434 | |
| 1435 | static bu32 |
| 1436 | saturate_u32 (bu64 val, bu32 *overflow) |
| 1437 | { |
| 1438 | if (val > 0xffffffff) |
| 1439 | { |
| 1440 | if (overflow) |
| 1441 | *overflow = 1; |
| 1442 | return 0xffffffff; |
| 1443 | } |
| 1444 | return val; |
| 1445 | } |
| 1446 | |
| 1447 | static bu32 |
| 1448 | saturate_u16 (bu64 val, bu32 *overflow) |
| 1449 | { |
| 1450 | if (val > 0xffff) |
| 1451 | { |
| 1452 | if (overflow) |
| 1453 | *overflow = 1; |
| 1454 | return 0xffff; |
| 1455 | } |
| 1456 | return val; |
| 1457 | } |
| 1458 | |
| 1459 | static bu64 |
| 1460 | rnd16 (bu64 val) |
| 1461 | { |
| 1462 | bu64 sgnbits; |
| 1463 | |
| 1464 | /* FIXME: Should honour rounding mode. */ |
| 1465 | if ((val & 0xffff) > 0x8000 |
| 1466 | || ((val & 0xffff) == 0x8000 && (val & 0x10000))) |
| 1467 | val += 0x8000; |
| 1468 | |
| 1469 | sgnbits = val & 0xffff000000000000ull; |
| 1470 | val >>= 16; |
| 1471 | return val | sgnbits; |
| 1472 | } |
| 1473 | |
| 1474 | static bu64 |
| 1475 | trunc16 (bu64 val) |
| 1476 | { |
| 1477 | bu64 sgnbits = val & 0xffff000000000000ull; |
| 1478 | val >>= 16; |
| 1479 | return val | sgnbits; |
| 1480 | } |
| 1481 | |
| 1482 | static int |
| 1483 | signbits (bu64 val, int size) |
| 1484 | { |
| 1485 | bu64 mask = (bu64)1 << (size - 1); |
| 1486 | bu64 bit = val & mask; |
| 1487 | int count = 0; |
| 1488 | for (;;) |
| 1489 | { |
| 1490 | mask >>= 1; |
| 1491 | bit >>= 1; |
| 1492 | if (mask == 0) |
| 1493 | break; |
| 1494 | if ((val & mask) != bit) |
| 1495 | break; |
| 1496 | count++; |
| 1497 | } |
| 1498 | if (size == 40) |
| 1499 | count -= 8; |
| 1500 | |
| 1501 | return count; |
| 1502 | } |
| 1503 | |
| 1504 | /* Extract a 16 or 32 bit value from a 64 bit multiplication result. |
| 1505 | These 64 bits must be sign- or zero-extended properly from the source |
| 1506 | we want to extract, either a 32 bit multiply or a 40 bit accumulator. */ |
| 1507 | |
| 1508 | static bu32 |
| 1509 | extract_mult (SIM_CPU *cpu, bu64 res, int mmod, int MM, |
| 1510 | int fullword, bu32 *overflow) |
| 1511 | { |
| 1512 | if (fullword) |
| 1513 | switch (mmod) |
| 1514 | { |
| 1515 | case 0: |
| 1516 | case M_IS: |
| 1517 | return saturate_s32 (res, overflow); |
| 1518 | case M_IU: |
| 1519 | return saturate_u32 (res, overflow); |
| 1520 | case M_FU: |
| 1521 | if (MM) |
| 1522 | return saturate_s32 (res, overflow); |
| 1523 | return saturate_u32 (res, overflow); |
| 1524 | case M_S2RND: |
| 1525 | case M_ISS2: |
| 1526 | return saturate_s32 (res << 1, overflow); |
| 1527 | default: |
| 1528 | illegal_instruction (cpu); |
| 1529 | } |
| 1530 | else |
| 1531 | switch (mmod) |
| 1532 | { |
| 1533 | case 0: |
| 1534 | case M_W32: |
| 1535 | return saturate_s16 (rnd16 (res), overflow); |
| 1536 | case M_IH: |
| 1537 | return saturate_s32 (rnd16 (res), overflow) & 0xFFFF; |
| 1538 | case M_IS: |
| 1539 | return saturate_s16 (res, overflow); |
| 1540 | case M_FU: |
| 1541 | if (MM) |
| 1542 | return saturate_s16 (rnd16 (res), overflow); |
| 1543 | return saturate_u16 (rnd16 (res), overflow); |
| 1544 | case M_IU: |
| 1545 | if (MM) |
| 1546 | return saturate_s16 (res, overflow); |
| 1547 | return saturate_u16 (res, overflow); |
| 1548 | |
| 1549 | case M_T: |
| 1550 | return saturate_s16 (trunc16 (res), overflow); |
| 1551 | case M_TFU: |
| 1552 | return saturate_u16 (trunc16 (res), overflow); |
| 1553 | |
| 1554 | case M_S2RND: |
| 1555 | return saturate_s16 (rnd16 (res << 1), overflow); |
| 1556 | case M_ISS2: |
| 1557 | return saturate_s16 (res << 1, overflow); |
| 1558 | default: |
| 1559 | illegal_instruction (cpu); |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | static bu32 |
| 1564 | decode_macfunc (SIM_CPU *cpu, int which, int op, int h0, int h1, int src0, |
| 1565 | int src1, int mmod, int MM, int fullword, bu32 *overflow, |
| 1566 | bu32 *neg) |
| 1567 | { |
| 1568 | bu64 acc; |
| 1569 | bu32 sat = 0, tsat, ret; |
| 1570 | |
| 1571 | /* Sign extend accumulator if necessary, otherwise unsigned. */ |
| 1572 | if (mmod == 0 || mmod == M_T || mmod == M_IS || mmod == M_ISS2 |
| 1573 | || mmod == M_S2RND || mmod == M_IH || mmod == M_W32) |
| 1574 | acc = get_extended_acc (cpu, which); |
| 1575 | else |
| 1576 | acc = get_unextended_acc (cpu, which); |
| 1577 | |
| 1578 | if (MM && (mmod == M_T || mmod == M_IS || mmod == M_ISS2 |
| 1579 | || mmod == M_S2RND || mmod == M_IH || mmod == M_W32)) |
| 1580 | acc |= -(acc & 0x80000000); |
| 1581 | |
| 1582 | if (op != 3) |
| 1583 | { |
| 1584 | bu8 sgn0 = (acc >> 31) & 1; |
| 1585 | /* This can't saturate, so we don't keep track of the sat flag. */ |
| 1586 | bu64 res = decode_multfunc (cpu, h0, h1, src0, src1, mmod, |
| 1587 | MM, &tsat); |
| 1588 | |
| 1589 | /* Perform accumulation. */ |
| 1590 | switch (op) |
| 1591 | { |
| 1592 | case 0: |
| 1593 | acc = res; |
| 1594 | sgn0 = (acc >> 31) & 1; |
| 1595 | break; |
| 1596 | case 1: |
| 1597 | acc = acc + res; |
| 1598 | break; |
| 1599 | case 2: |
| 1600 | acc = acc - res; |
| 1601 | break; |
| 1602 | } |
| 1603 | |
| 1604 | /* Saturate. */ |
| 1605 | switch (mmod) |
| 1606 | { |
| 1607 | case 0: |
| 1608 | case M_T: |
| 1609 | case M_IS: |
| 1610 | case M_ISS2: |
| 1611 | case M_S2RND: |
| 1612 | if ((bs64)acc < -((bs64)1 << 39)) |
| 1613 | acc = -((bu64)1 << 39), sat = 1; |
| 1614 | else if ((bs64)acc > 0x7fffffffffll) |
| 1615 | acc = 0x7fffffffffull, sat = 1; |
| 1616 | break; |
| 1617 | case M_TFU: |
| 1618 | if (!MM && acc > 0xFFFFFFFFFFull) |
| 1619 | acc = 0x0, sat = 1; |
| 1620 | if (MM && acc > 0xFFFFFFFF) |
| 1621 | acc &= 0xFFFFFFFF; |
| 1622 | break; |
| 1623 | case M_IU: |
| 1624 | if (acc & 0x8000000000000000ull) |
| 1625 | acc = 0x0, sat = 1; |
| 1626 | if (acc > 0xFFFFFFFFFFull) |
| 1627 | acc &= 0xFFFFFFFFFFull, sat = 1; |
| 1628 | if (MM && acc > 0xFFFFFFFF) |
| 1629 | acc &= 0xFFFFFFFF; |
| 1630 | if (acc & 0x80000000) |
| 1631 | acc |= 0xffffffff00000000ull; |
| 1632 | break; |
| 1633 | case M_FU: |
| 1634 | if (!MM && (bs64)acc < 0) |
| 1635 | acc = 0x0, sat = 1; |
| 1636 | if (MM && (bs64)acc < -((bs64)1 << 39)) |
| 1637 | acc = -((bu64)1 << 39), sat = 1; |
| 1638 | if (!MM && (bs64)acc > (bs64)0xFFFFFFFFFFll) |
| 1639 | acc = 0xFFFFFFFFFFull, sat = 1; |
| 1640 | if (MM && acc > 0xFFFFFFFFFFull) |
| 1641 | acc &= 0xFFFFFFFFFFull; |
| 1642 | if (MM && acc & 0x80000000) |
| 1643 | acc |= 0xffffffff00000000ull; |
| 1644 | break; |
| 1645 | case M_IH: |
| 1646 | if ((bs64)acc < -0x80000000ll) |
| 1647 | acc = -0x80000000ull, sat = 1; |
| 1648 | else if ((bs64)acc >= 0x7fffffffll) |
| 1649 | acc = 0x7fffffffull, sat = 1; |
| 1650 | break; |
| 1651 | case M_W32: |
| 1652 | if (sgn0 && (sgn0 != ((acc >> 31) & 1)) |
| 1653 | && (((acc >> 32) & 0xFF) == 0xff)) |
| 1654 | acc = 0x80000000; |
| 1655 | acc &= 0xffffffff; |
| 1656 | if (acc & 0x80000000) |
| 1657 | acc |= 0xffffffff00000000ull; |
| 1658 | break; |
| 1659 | default: |
| 1660 | illegal_instruction (cpu); |
| 1661 | } |
| 1662 | |
| 1663 | if (acc & 0x8000000000ull) |
| 1664 | *neg = 1; |
| 1665 | |
| 1666 | STORE (AXREG (which), (acc >> 32) & 0xff); |
| 1667 | STORE (AWREG (which), acc & 0xffffffff); |
| 1668 | STORE (ASTATREG (av[which]), sat); |
| 1669 | if (sat) |
| 1670 | STORE (ASTATREG (avs[which]), sat); |
| 1671 | } |
| 1672 | |
| 1673 | ret = extract_mult (cpu, acc, mmod, MM, fullword, overflow); |
| 1674 | |
| 1675 | if (!fullword) |
| 1676 | { |
| 1677 | if (ret & 0x8000) |
| 1678 | *neg = 1; |
| 1679 | } |
| 1680 | else |
| 1681 | { |
| 1682 | if (ret & 0x80000000) |
| 1683 | *neg = 1; |
| 1684 | } |
| 1685 | |
| 1686 | return ret; |
| 1687 | } |
| 1688 | |
| 1689 | bu32 |
| 1690 | hwloop_get_next_pc (SIM_CPU *cpu, bu32 pc, bu32 insn_len) |
| 1691 | { |
| 1692 | int i; |
| 1693 | |
| 1694 | if (insn_len == 0) |
| 1695 | return pc; |
| 1696 | |
| 1697 | /* If our PC has reached the bottom of a hardware loop, |
| 1698 | move back up to the top of the hardware loop. */ |
| 1699 | for (i = 1; i >= 0; --i) |
| 1700 | if (LCREG (i) > 1 && pc == LBREG (i)) |
| 1701 | { |
| 1702 | TRACE_BRANCH (cpu, pc, LTREG (i), i, "Hardware loop %i", i); |
| 1703 | return LTREG (i); |
| 1704 | } |
| 1705 | |
| 1706 | return pc + insn_len; |
| 1707 | } |
| 1708 | |
| 1709 | static void |
| 1710 | decode_ProgCtrl_0 (SIM_CPU *cpu, bu16 iw0, bu32 pc) |
| 1711 | { |
| 1712 | /* ProgCtrl |
| 1713 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 1714 | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |.prgfunc.......|.poprnd........| |
| 1715 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 1716 | int poprnd = ((iw0 >> ProgCtrl_poprnd_bits) & ProgCtrl_poprnd_mask); |
| 1717 | int prgfunc = ((iw0 >> ProgCtrl_prgfunc_bits) & ProgCtrl_prgfunc_mask); |
| 1718 | |
| 1719 | TRACE_EXTRACT (cpu, "%s: poprnd:%i prgfunc:%i", __func__, poprnd, prgfunc); |
| 1720 | |
| 1721 | if (prgfunc == 0 && poprnd == 0) |
| 1722 | { |
| 1723 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_nop); |
| 1724 | TRACE_INSN (cpu, "NOP;"); |
| 1725 | } |
| 1726 | else if (prgfunc == 1 && poprnd == 0) |
| 1727 | { |
| 1728 | bu32 newpc = RETSREG; |
| 1729 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1730 | TRACE_INSN (cpu, "RTS;"); |
| 1731 | IFETCH_CHECK (newpc); |
| 1732 | if (INSN_LEN == 8) |
| 1733 | illegal_instruction_combination (cpu); |
| 1734 | TRACE_BRANCH (cpu, pc, newpc, -1, "RTS"); |
| 1735 | SET_PCREG (newpc); |
| 1736 | BFIN_CPU_STATE.did_jump = true; |
| 1737 | CYCLE_DELAY = 5; |
| 1738 | } |
| 1739 | else if (prgfunc == 1 && poprnd == 1) |
| 1740 | { |
| 1741 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1742 | TRACE_INSN (cpu, "RTI;"); |
| 1743 | /* Do not do IFETCH_CHECK here -- LSB has special meaning. */ |
| 1744 | if (INSN_LEN == 8) |
| 1745 | illegal_instruction_combination (cpu); |
| 1746 | cec_return (cpu, -1); |
| 1747 | CYCLE_DELAY = 5; |
| 1748 | } |
| 1749 | else if (prgfunc == 1 && poprnd == 2) |
| 1750 | { |
| 1751 | bu32 newpc = RETXREG; |
| 1752 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1753 | TRACE_INSN (cpu, "RTX;"); |
| 1754 | /* XXX: Not sure if this is what the hardware does. */ |
| 1755 | IFETCH_CHECK (newpc); |
| 1756 | if (INSN_LEN == 8) |
| 1757 | illegal_instruction_combination (cpu); |
| 1758 | cec_return (cpu, IVG_EVX); |
| 1759 | CYCLE_DELAY = 5; |
| 1760 | } |
| 1761 | else if (prgfunc == 1 && poprnd == 3) |
| 1762 | { |
| 1763 | bu32 newpc = RETNREG; |
| 1764 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1765 | TRACE_INSN (cpu, "RTN;"); |
| 1766 | /* XXX: Not sure if this is what the hardware does. */ |
| 1767 | IFETCH_CHECK (newpc); |
| 1768 | if (INSN_LEN == 8) |
| 1769 | illegal_instruction_combination (cpu); |
| 1770 | cec_return (cpu, IVG_NMI); |
| 1771 | CYCLE_DELAY = 5; |
| 1772 | } |
| 1773 | else if (prgfunc == 1 && poprnd == 4) |
| 1774 | { |
| 1775 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1776 | TRACE_INSN (cpu, "RTE;"); |
| 1777 | if (INSN_LEN == 8) |
| 1778 | illegal_instruction_combination (cpu); |
| 1779 | cec_return (cpu, IVG_EMU); |
| 1780 | CYCLE_DELAY = 5; |
| 1781 | } |
| 1782 | else if (prgfunc == 2 && poprnd == 0) |
| 1783 | { |
| 1784 | SIM_DESC sd = CPU_STATE (cpu); |
| 1785 | sim_events *events = STATE_EVENTS (sd); |
| 1786 | |
| 1787 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_sync); |
| 1788 | /* XXX: in supervisor mode, utilizes wake up sources |
| 1789 | in user mode, it's a NOP ... */ |
| 1790 | TRACE_INSN (cpu, "IDLE;"); |
| 1791 | |
| 1792 | if (INSN_LEN == 8) |
| 1793 | illegal_instruction_combination (cpu); |
| 1794 | |
| 1795 | /* Timewarp ! */ |
| 1796 | if (events->queue) |
| 1797 | CYCLE_DELAY = events->time_from_event; |
| 1798 | else |
| 1799 | abort (); /* XXX: Should this ever happen ? */ |
| 1800 | } |
| 1801 | else if (prgfunc == 2 && poprnd == 3) |
| 1802 | { |
| 1803 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_sync); |
| 1804 | /* Just NOP it. */ |
| 1805 | TRACE_INSN (cpu, "CSYNC;"); |
| 1806 | if (INSN_LEN == 8) |
| 1807 | illegal_instruction_combination (cpu); |
| 1808 | CYCLE_DELAY = 10; |
| 1809 | } |
| 1810 | else if (prgfunc == 2 && poprnd == 4) |
| 1811 | { |
| 1812 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_sync); |
| 1813 | /* Just NOP it. */ |
| 1814 | TRACE_INSN (cpu, "SSYNC;"); |
| 1815 | if (INSN_LEN == 8) |
| 1816 | illegal_instruction_combination (cpu); |
| 1817 | |
| 1818 | /* Really 10+, but no model info for this. */ |
| 1819 | CYCLE_DELAY = 10; |
| 1820 | } |
| 1821 | else if (prgfunc == 2 && poprnd == 5) |
| 1822 | { |
| 1823 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_cec); |
| 1824 | TRACE_INSN (cpu, "EMUEXCPT;"); |
| 1825 | if (INSN_LEN == 8) |
| 1826 | illegal_instruction_combination (cpu); |
| 1827 | cec_exception (cpu, VEC_SIM_TRAP); |
| 1828 | } |
| 1829 | else if (prgfunc == 3 && poprnd < 8) |
| 1830 | { |
| 1831 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_cec); |
| 1832 | TRACE_INSN (cpu, "CLI R%i;", poprnd); |
| 1833 | if (INSN_LEN == 8) |
| 1834 | illegal_instruction_combination (cpu); |
| 1835 | SET_DREG (poprnd, cec_cli (cpu)); |
| 1836 | } |
| 1837 | else if (prgfunc == 4 && poprnd < 8) |
| 1838 | { |
| 1839 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_cec); |
| 1840 | TRACE_INSN (cpu, "STI R%i;", poprnd); |
| 1841 | if (INSN_LEN == 8) |
| 1842 | illegal_instruction_combination (cpu); |
| 1843 | cec_sti (cpu, DREG (poprnd)); |
| 1844 | CYCLE_DELAY = 3; |
| 1845 | } |
| 1846 | else if (prgfunc == 5 && poprnd < 8) |
| 1847 | { |
| 1848 | bu32 newpc = PREG (poprnd); |
| 1849 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1850 | TRACE_INSN (cpu, "JUMP (%s);", get_preg_name (poprnd)); |
| 1851 | IFETCH_CHECK (newpc); |
| 1852 | if (INSN_LEN == 8) |
| 1853 | illegal_instruction_combination (cpu); |
| 1854 | TRACE_BRANCH (cpu, pc, newpc, -1, "JUMP (Preg)"); |
| 1855 | SET_PCREG (newpc); |
| 1856 | BFIN_CPU_STATE.did_jump = true; |
| 1857 | PROFILE_BRANCH_TAKEN (cpu); |
| 1858 | CYCLE_DELAY = 5; |
| 1859 | } |
| 1860 | else if (prgfunc == 6 && poprnd < 8) |
| 1861 | { |
| 1862 | bu32 newpc = PREG (poprnd); |
| 1863 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1864 | TRACE_INSN (cpu, "CALL (%s);", get_preg_name (poprnd)); |
| 1865 | IFETCH_CHECK (newpc); |
| 1866 | if (INSN_LEN == 8) |
| 1867 | illegal_instruction_combination (cpu); |
| 1868 | TRACE_BRANCH (cpu, pc, newpc, -1, "CALL (Preg)"); |
| 1869 | /* If we're at the end of a hardware loop, RETS is going to be |
| 1870 | the top of the loop rather than the next instruction. */ |
| 1871 | SET_RETSREG (hwloop_get_next_pc (cpu, pc, 2)); |
| 1872 | SET_PCREG (newpc); |
| 1873 | BFIN_CPU_STATE.did_jump = true; |
| 1874 | PROFILE_BRANCH_TAKEN (cpu); |
| 1875 | CYCLE_DELAY = 5; |
| 1876 | } |
| 1877 | else if (prgfunc == 7 && poprnd < 8) |
| 1878 | { |
| 1879 | bu32 newpc = pc + PREG (poprnd); |
| 1880 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1881 | TRACE_INSN (cpu, "CALL (PC + %s);", get_preg_name (poprnd)); |
| 1882 | IFETCH_CHECK (newpc); |
| 1883 | if (INSN_LEN == 8) |
| 1884 | illegal_instruction_combination (cpu); |
| 1885 | TRACE_BRANCH (cpu, pc, newpc, -1, "CALL (PC + Preg)"); |
| 1886 | SET_RETSREG (hwloop_get_next_pc (cpu, pc, 2)); |
| 1887 | SET_PCREG (newpc); |
| 1888 | BFIN_CPU_STATE.did_jump = true; |
| 1889 | PROFILE_BRANCH_TAKEN (cpu); |
| 1890 | CYCLE_DELAY = 5; |
| 1891 | } |
| 1892 | else if (prgfunc == 8 && poprnd < 8) |
| 1893 | { |
| 1894 | bu32 newpc = pc + PREG (poprnd); |
| 1895 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_branch); |
| 1896 | TRACE_INSN (cpu, "JUMP (PC + %s);", get_preg_name (poprnd)); |
| 1897 | IFETCH_CHECK (newpc); |
| 1898 | if (INSN_LEN == 8) |
| 1899 | illegal_instruction_combination (cpu); |
| 1900 | TRACE_BRANCH (cpu, pc, newpc, -1, "JUMP (PC + Preg)"); |
| 1901 | SET_PCREG (newpc); |
| 1902 | BFIN_CPU_STATE.did_jump = true; |
| 1903 | PROFILE_BRANCH_TAKEN (cpu); |
| 1904 | CYCLE_DELAY = 5; |
| 1905 | } |
| 1906 | else if (prgfunc == 9) |
| 1907 | { |
| 1908 | int raise = uimm4 (poprnd); |
| 1909 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_cec); |
| 1910 | TRACE_INSN (cpu, "RAISE %s;", uimm4_str (raise)); |
| 1911 | if (INSN_LEN == 8) |
| 1912 | illegal_instruction_combination (cpu); |
| 1913 | cec_require_supervisor (cpu); |
| 1914 | if (raise == IVG_IVHW) |
| 1915 | cec_hwerr (cpu, HWERR_RAISE_5); |
| 1916 | else |
| 1917 | cec_latch (cpu, raise); |
| 1918 | CYCLE_DELAY = 3; /* XXX: Only if IVG is unmasked. */ |
| 1919 | } |
| 1920 | else if (prgfunc == 10) |
| 1921 | { |
| 1922 | int excpt = uimm4 (poprnd); |
| 1923 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_cec); |
| 1924 | TRACE_INSN (cpu, "EXCPT %s;", uimm4_str (excpt)); |
| 1925 | if (INSN_LEN == 8) |
| 1926 | illegal_instruction_combination (cpu); |
| 1927 | cec_exception (cpu, excpt); |
| 1928 | CYCLE_DELAY = 3; |
| 1929 | } |
| 1930 | else if (prgfunc == 11 && poprnd < 6) |
| 1931 | { |
| 1932 | bu32 addr = PREG (poprnd); |
| 1933 | bu8 byte; |
| 1934 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ProgCtrl_atomic); |
| 1935 | TRACE_INSN (cpu, "TESTSET (%s);", get_preg_name (poprnd)); |
| 1936 | if (INSN_LEN == 8) |
| 1937 | illegal_instruction_combination (cpu); |
| 1938 | byte = GET_WORD (addr); |
| 1939 | SET_CCREG (byte == 0); |
| 1940 | PUT_BYTE (addr, byte | 0x80); |
| 1941 | /* Also includes memory stalls, but we don't model that. */ |
| 1942 | CYCLE_DELAY = 2; |
| 1943 | } |
| 1944 | else |
| 1945 | illegal_instruction (cpu); |
| 1946 | } |
| 1947 | |
| 1948 | static void |
| 1949 | decode_CaCTRL_0 (SIM_CPU *cpu, bu16 iw0) |
| 1950 | { |
| 1951 | /* CaCTRL |
| 1952 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 1953 | | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |.a.|.op....|.reg.......| |
| 1954 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 1955 | int a = ((iw0 >> CaCTRL_a_bits) & CaCTRL_a_mask); |
| 1956 | int op = ((iw0 >> CaCTRL_op_bits) & CaCTRL_op_mask); |
| 1957 | int reg = ((iw0 >> CaCTRL_reg_bits) & CaCTRL_reg_mask); |
| 1958 | bu32 preg = PREG (reg); |
| 1959 | const char * const sinsn[] = { "PREFETCH", "FLUSHINV", "FLUSH", "IFLUSH", }; |
| 1960 | |
| 1961 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_CaCTRL); |
| 1962 | TRACE_EXTRACT (cpu, "%s: a:%i op:%i reg:%i", __func__, a, op, reg); |
| 1963 | TRACE_INSN (cpu, "%s [%s%s];", sinsn[op], get_preg_name (reg), a ? "++" : ""); |
| 1964 | |
| 1965 | if (INSN_LEN == 8) |
| 1966 | /* None of these can be part of a parallel instruction. */ |
| 1967 | illegal_instruction_combination (cpu); |
| 1968 | |
| 1969 | /* No cache simulation, so these are (mostly) all NOPs. |
| 1970 | XXX: The hardware takes care of masking to cache lines, but need |
| 1971 | to check behavior of the post increment. Should we be aligning |
| 1972 | the value to the cache line before adding the cache line size, or |
| 1973 | do we just add the cache line size ? */ |
| 1974 | if (op == 0) |
| 1975 | { /* PREFETCH */ |
| 1976 | mmu_check_cache_addr (cpu, preg, false, false); |
| 1977 | } |
| 1978 | else if (op == 1) |
| 1979 | { /* FLUSHINV */ |
| 1980 | mmu_check_cache_addr (cpu, preg, true, false); |
| 1981 | } |
| 1982 | else if (op == 2) |
| 1983 | { /* FLUSH */ |
| 1984 | mmu_check_cache_addr (cpu, preg, true, false); |
| 1985 | } |
| 1986 | else if (op == 3) |
| 1987 | { /* IFLUSH */ |
| 1988 | mmu_check_cache_addr (cpu, preg, false, true); |
| 1989 | } |
| 1990 | |
| 1991 | if (a) |
| 1992 | SET_PREG (reg, preg + BFIN_L1_CACHE_BYTES); |
| 1993 | } |
| 1994 | |
| 1995 | static void |
| 1996 | decode_PushPopReg_0 (SIM_CPU *cpu, bu16 iw0) |
| 1997 | { |
| 1998 | /* PushPopReg |
| 1999 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2000 | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |.W.|.grp.......|.reg.......| |
| 2001 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2002 | int W = ((iw0 >> PushPopReg_W_bits) & PushPopReg_W_mask); |
| 2003 | int grp = ((iw0 >> PushPopReg_grp_bits) & PushPopReg_grp_mask); |
| 2004 | int reg = ((iw0 >> PushPopReg_reg_bits) & PushPopReg_reg_mask); |
| 2005 | const char *reg_name = get_allreg_name (grp, reg); |
| 2006 | bu32 value; |
| 2007 | bu32 sp = SPREG; |
| 2008 | |
| 2009 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_PushPopReg); |
| 2010 | TRACE_EXTRACT (cpu, "%s: W:%i grp:%i reg:%i", __func__, W, grp, reg); |
| 2011 | TRACE_DECODE (cpu, "%s: reg:%s", __func__, reg_name); |
| 2012 | |
| 2013 | /* Can't push/pop reserved registers */ |
| 2014 | if (reg_is_reserved (grp, reg)) |
| 2015 | illegal_instruction (cpu); |
| 2016 | |
| 2017 | if (W == 0) |
| 2018 | { |
| 2019 | /* Dreg and Preg are not supported by this instruction. */ |
| 2020 | if (grp == 0 || grp == 1) |
| 2021 | illegal_instruction (cpu); |
| 2022 | TRACE_INSN (cpu, "%s = [SP++];", reg_name); |
| 2023 | /* Can't pop USP while in userspace. */ |
| 2024 | if (INSN_LEN == 8 || (grp == 7 && reg == 0 && cec_is_user_mode(cpu))) |
| 2025 | illegal_instruction_combination (cpu); |
| 2026 | /* XXX: The valid register check is in reg_write(), so we might |
| 2027 | incorrectly do a GET_LONG() here ... */ |
| 2028 | value = GET_LONG (sp); |
| 2029 | reg_write (cpu, grp, reg, value); |
| 2030 | if (grp == 7 && reg == 3) |
| 2031 | cec_pop_reti (cpu); |
| 2032 | |
| 2033 | sp += 4; |
| 2034 | } |
| 2035 | else |
| 2036 | { |
| 2037 | TRACE_INSN (cpu, "[--SP] = %s;", reg_name); |
| 2038 | /* Can't push SP. */ |
| 2039 | if (INSN_LEN == 8 || (grp == 1 && reg == 6)) |
| 2040 | illegal_instruction_combination (cpu); |
| 2041 | |
| 2042 | sp -= 4; |
| 2043 | value = reg_read (cpu, grp, reg); |
| 2044 | if (grp == 7 && reg == 3) |
| 2045 | cec_push_reti (cpu); |
| 2046 | |
| 2047 | PUT_LONG (sp, value); |
| 2048 | } |
| 2049 | |
| 2050 | /* Note: SP update must be delayed until after all reads/writes; see |
| 2051 | comments in decode_PushPopMultiple_0() for more info. */ |
| 2052 | SET_SPREG (sp); |
| 2053 | } |
| 2054 | |
| 2055 | static void |
| 2056 | decode_PushPopMultiple_0 (SIM_CPU *cpu, bu16 iw0) |
| 2057 | { |
| 2058 | /* PushPopMultiple |
| 2059 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2060 | | 0 | 0 | 0 | 0 | 0 | 1 | 0 |.d.|.p.|.W.|.dr........|.pr........| |
| 2061 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2062 | int p = ((iw0 >> PushPopMultiple_p_bits) & PushPopMultiple_p_mask); |
| 2063 | int d = ((iw0 >> PushPopMultiple_d_bits) & PushPopMultiple_d_mask); |
| 2064 | int W = ((iw0 >> PushPopMultiple_W_bits) & PushPopMultiple_W_mask); |
| 2065 | int dr = ((iw0 >> PushPopMultiple_dr_bits) & PushPopMultiple_dr_mask); |
| 2066 | int pr = ((iw0 >> PushPopMultiple_pr_bits) & PushPopMultiple_pr_mask); |
| 2067 | int i; |
| 2068 | bu32 sp = SPREG; |
| 2069 | |
| 2070 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_PushPopMultiple); |
| 2071 | TRACE_EXTRACT (cpu, "%s: d:%i p:%i W:%i dr:%i pr:%i", |
| 2072 | __func__, d, p, W, dr, pr); |
| 2073 | |
| 2074 | if ((d == 0 && p == 0) || (p && imm5 (pr) > 5) |
| 2075 | || (d && !p && pr) || (p && !d && dr)) |
| 2076 | illegal_instruction (cpu); |
| 2077 | |
| 2078 | if (W == 1) |
| 2079 | { |
| 2080 | if (d && p) |
| 2081 | TRACE_INSN (cpu, "[--SP] = (R7:%i, P5:%i);", dr, pr); |
| 2082 | else if (d) |
| 2083 | TRACE_INSN (cpu, "[--SP] = (R7:%i);", dr); |
| 2084 | else |
| 2085 | TRACE_INSN (cpu, "[--SP] = (P5:%i);", pr); |
| 2086 | |
| 2087 | if (d) |
| 2088 | for (i = dr; i < 8; i++) |
| 2089 | { |
| 2090 | sp -= 4; |
| 2091 | PUT_LONG (sp, DREG (i)); |
| 2092 | } |
| 2093 | if (p) |
| 2094 | for (i = pr; i < 6; i++) |
| 2095 | { |
| 2096 | sp -= 4; |
| 2097 | PUT_LONG (sp, PREG (i)); |
| 2098 | } |
| 2099 | |
| 2100 | CYCLE_DELAY = 14; |
| 2101 | } |
| 2102 | else |
| 2103 | { |
| 2104 | if (d && p) |
| 2105 | TRACE_INSN (cpu, "(R7:%i, P5:%i) = [SP++];", dr, pr); |
| 2106 | else if (d) |
| 2107 | TRACE_INSN (cpu, "(R7:%i) = [SP++];", dr); |
| 2108 | else |
| 2109 | TRACE_INSN (cpu, "(P5:%i) = [SP++];", pr); |
| 2110 | |
| 2111 | if (p) |
| 2112 | for (i = 5; i >= pr; i--) |
| 2113 | { |
| 2114 | SET_PREG (i, GET_LONG (sp)); |
| 2115 | sp += 4; |
| 2116 | } |
| 2117 | if (d) |
| 2118 | for (i = 7; i >= dr; i--) |
| 2119 | { |
| 2120 | SET_DREG (i, GET_LONG (sp)); |
| 2121 | sp += 4; |
| 2122 | } |
| 2123 | |
| 2124 | CYCLE_DELAY = 11; |
| 2125 | } |
| 2126 | |
| 2127 | /* Note: SP update must be delayed until after all reads/writes so that |
| 2128 | if an exception does occur, the insn may be re-executed as the |
| 2129 | SP has not yet changed. */ |
| 2130 | SET_SPREG (sp); |
| 2131 | } |
| 2132 | |
| 2133 | static void |
| 2134 | decode_ccMV_0 (SIM_CPU *cpu, bu16 iw0) |
| 2135 | { |
| 2136 | /* ccMV |
| 2137 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2138 | | 0 | 0 | 0 | 0 | 0 | 1 | 1 |.T.|.d.|.s.|.dst.......|.src.......| |
| 2139 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2140 | int s = ((iw0 >> CCmv_s_bits) & CCmv_s_mask); |
| 2141 | int d = ((iw0 >> CCmv_d_bits) & CCmv_d_mask); |
| 2142 | int T = ((iw0 >> CCmv_T_bits) & CCmv_T_mask); |
| 2143 | int src = ((iw0 >> CCmv_src_bits) & CCmv_src_mask); |
| 2144 | int dst = ((iw0 >> CCmv_dst_bits) & CCmv_dst_mask); |
| 2145 | int cond = T ? CCREG : ! CCREG; |
| 2146 | |
| 2147 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ccMV); |
| 2148 | TRACE_EXTRACT (cpu, "%s: T:%i d:%i s:%i dst:%i src:%i", |
| 2149 | __func__, T, d, s, dst, src); |
| 2150 | |
| 2151 | TRACE_INSN (cpu, "IF %sCC %s = %s;", T ? "" : "! ", |
| 2152 | get_allreg_name (d, dst), |
| 2153 | get_allreg_name (s, src)); |
| 2154 | if (INSN_LEN == 8) |
| 2155 | illegal_instruction_combination (cpu); |
| 2156 | |
| 2157 | if (cond) |
| 2158 | reg_write (cpu, d, dst, reg_read (cpu, s, src)); |
| 2159 | } |
| 2160 | |
| 2161 | static void |
| 2162 | decode_CCflag_0 (SIM_CPU *cpu, bu16 iw0) |
| 2163 | { |
| 2164 | /* CCflag |
| 2165 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2166 | | 0 | 0 | 0 | 0 | 1 |.I.|.opc.......|.G.|.y.........|.x.........| |
| 2167 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2168 | int x = ((iw0 >> CCflag_x_bits) & CCflag_x_mask); |
| 2169 | int y = ((iw0 >> CCflag_y_bits) & CCflag_y_mask); |
| 2170 | int I = ((iw0 >> CCflag_I_bits) & CCflag_I_mask); |
| 2171 | int G = ((iw0 >> CCflag_G_bits) & CCflag_G_mask); |
| 2172 | int opc = ((iw0 >> CCflag_opc_bits) & CCflag_opc_mask); |
| 2173 | |
| 2174 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_CCflag); |
| 2175 | TRACE_EXTRACT (cpu, "%s: I:%i opc:%i G:%i y:%i x:%i", |
| 2176 | __func__, I, opc, G, y, x); |
| 2177 | |
| 2178 | if (opc > 4) |
| 2179 | { |
| 2180 | bs64 acc0 = get_extended_acc (cpu, 0); |
| 2181 | bs64 acc1 = get_extended_acc (cpu, 1); |
| 2182 | bs64 diff = acc0 - acc1; |
| 2183 | |
| 2184 | if (x != 0 || y != 0) |
| 2185 | illegal_instruction (cpu); |
| 2186 | |
| 2187 | if (opc == 5 && I == 0 && G == 0) |
| 2188 | { |
| 2189 | TRACE_INSN (cpu, "CC = A0 == A1;"); |
| 2190 | if (INSN_LEN == 8) |
| 2191 | illegal_instruction_combination (cpu); |
| 2192 | SET_CCREG (acc0 == acc1); |
| 2193 | } |
| 2194 | else if (opc == 6 && I == 0 && G == 0) |
| 2195 | { |
| 2196 | TRACE_INSN (cpu, "CC = A0 < A1"); |
| 2197 | if (INSN_LEN == 8) |
| 2198 | illegal_instruction_combination (cpu); |
| 2199 | SET_CCREG (acc0 < acc1); |
| 2200 | } |
| 2201 | else if (opc == 7 && I == 0 && G == 0) |
| 2202 | { |
| 2203 | TRACE_INSN (cpu, "CC = A0 <= A1"); |
| 2204 | if (INSN_LEN == 8) |
| 2205 | illegal_instruction_combination (cpu); |
| 2206 | SET_CCREG (acc0 <= acc1); |
| 2207 | } |
| 2208 | else |
| 2209 | illegal_instruction (cpu); |
| 2210 | |
| 2211 | SET_ASTATREG (az, diff == 0); |
| 2212 | SET_ASTATREG (an, diff < 0); |
| 2213 | SET_ASTATREG (ac0, (bu40)acc1 <= (bu40)acc0); |
| 2214 | } |
| 2215 | else |
| 2216 | { |
| 2217 | int issigned = opc < 3; |
| 2218 | const char *sign = issigned ? "" : " (IU)"; |
| 2219 | bu32 srcop = G ? PREG (x) : DREG (x); |
| 2220 | char s = G ? 'P' : 'R'; |
| 2221 | bu32 dstop = I ? (issigned ? imm3 (y) : uimm3 (y)) : G ? PREG (y) : DREG (y); |
| 2222 | const char *op; |
| 2223 | char d = G ? 'P' : 'R'; |
| 2224 | int flgs = srcop >> 31; |
| 2225 | int flgo = dstop >> 31; |
| 2226 | |
| 2227 | bu32 result = srcop - dstop; |
| 2228 | int cc; |
| 2229 | int flgn = result >> 31; |
| 2230 | int overflow = (flgs ^ flgo) & (flgn ^ flgs); |
| 2231 | int az = result == 0; |
| 2232 | int ac0 = dstop <= srcop; |
| 2233 | int an; |
| 2234 | if (issigned) |
| 2235 | an = (flgn && !overflow) || (!flgn && overflow); |
| 2236 | else |
| 2237 | an = dstop > srcop; |
| 2238 | |
| 2239 | switch (opc) |
| 2240 | { |
| 2241 | default: /* Shutup useless gcc warnings. */ |
| 2242 | case 0: /* signed */ |
| 2243 | op = "=="; |
| 2244 | cc = az; |
| 2245 | break; |
| 2246 | case 1: /* signed */ |
| 2247 | op = "<"; |
| 2248 | cc = an; |
| 2249 | break; |
| 2250 | case 2: /* signed */ |
| 2251 | op = "<="; |
| 2252 | cc = an || az; |
| 2253 | break; |
| 2254 | case 3: /* unsigned */ |
| 2255 | op = "<"; |
| 2256 | cc = !ac0; |
| 2257 | break; |
| 2258 | case 4: /* unsigned */ |
| 2259 | op = "<="; |
| 2260 | cc = !ac0 || az; |
| 2261 | break; |
| 2262 | } |
| 2263 | |
| 2264 | if (I) |
| 2265 | TRACE_INSN (cpu, "CC = %c%i %s %s%s;", s, x, op, |
| 2266 | issigned ? imm3_str (y) : uimm3_str (y), sign); |
| 2267 | else |
| 2268 | { |
| 2269 | TRACE_DECODE (cpu, "%s %c%i:%x %c%i:%x", __func__, |
| 2270 | s, x, srcop, d, y, dstop); |
| 2271 | TRACE_INSN (cpu, "CC = %c%i %s %c%i%s;", s, x, op, d, y, sign); |
| 2272 | } |
| 2273 | |
| 2274 | SET_CCREG (cc); |
| 2275 | /* Pointer compares only touch CC. */ |
| 2276 | if (!G) |
| 2277 | { |
| 2278 | SET_ASTATREG (az, az); |
| 2279 | SET_ASTATREG (an, an); |
| 2280 | SET_ASTATREG (ac0, ac0); |
| 2281 | } |
| 2282 | } |
| 2283 | } |
| 2284 | |
| 2285 | static void |
| 2286 | decode_CC2dreg_0 (SIM_CPU *cpu, bu16 iw0) |
| 2287 | { |
| 2288 | /* CC2dreg |
| 2289 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2290 | | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |.op....|.reg.......| |
| 2291 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2292 | int op = ((iw0 >> CC2dreg_op_bits) & CC2dreg_op_mask); |
| 2293 | int reg = ((iw0 >> CC2dreg_reg_bits) & CC2dreg_reg_mask); |
| 2294 | |
| 2295 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_CC2dreg); |
| 2296 | TRACE_EXTRACT (cpu, "%s: op:%i reg:%i", __func__, op, reg); |
| 2297 | |
| 2298 | if (op == 0) |
| 2299 | { |
| 2300 | TRACE_INSN (cpu, "R%i = CC;", reg); |
| 2301 | if (INSN_LEN == 8) |
| 2302 | illegal_instruction_combination (cpu); |
| 2303 | SET_DREG (reg, CCREG); |
| 2304 | } |
| 2305 | else if (op == 1) |
| 2306 | { |
| 2307 | TRACE_INSN (cpu, "CC = R%i;", reg); |
| 2308 | if (INSN_LEN == 8) |
| 2309 | illegal_instruction_combination (cpu); |
| 2310 | SET_CCREG (DREG (reg) != 0); |
| 2311 | } |
| 2312 | else if (op == 3 && reg == 0) |
| 2313 | { |
| 2314 | TRACE_INSN (cpu, "CC = !CC;"); |
| 2315 | if (INSN_LEN == 8) |
| 2316 | illegal_instruction_combination (cpu); |
| 2317 | SET_CCREG (!CCREG); |
| 2318 | } |
| 2319 | else |
| 2320 | illegal_instruction (cpu); |
| 2321 | } |
| 2322 | |
| 2323 | static void |
| 2324 | decode_CC2stat_0 (SIM_CPU *cpu, bu16 iw0) |
| 2325 | { |
| 2326 | /* CC2stat |
| 2327 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2328 | | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |.D.|.op....|.cbit..............| |
| 2329 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2330 | int D = ((iw0 >> CC2stat_D_bits) & CC2stat_D_mask); |
| 2331 | int op = ((iw0 >> CC2stat_op_bits) & CC2stat_op_mask); |
| 2332 | int cbit = ((iw0 >> CC2stat_cbit_bits) & CC2stat_cbit_mask); |
| 2333 | bu32 pval; |
| 2334 | |
| 2335 | const char * const op_names[] = { "", "|", "&", "^" } ; |
| 2336 | |
| 2337 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_CC2stat); |
| 2338 | TRACE_EXTRACT (cpu, "%s: D:%i op:%i cbit:%i", __func__, D, op, cbit); |
| 2339 | |
| 2340 | TRACE_INSN (cpu, "%s %s= %s;", D ? astat_names[cbit] : "CC", |
| 2341 | op_names[op], D ? "CC" : astat_names[cbit]); |
| 2342 | |
| 2343 | /* CC = CC; is invalid. */ |
| 2344 | if (cbit == 5) |
| 2345 | illegal_instruction (cpu); |
| 2346 | |
| 2347 | if (INSN_LEN == 8) |
| 2348 | illegal_instruction_combination (cpu); |
| 2349 | |
| 2350 | pval = !!(ASTAT & (1 << cbit)); |
| 2351 | if (D == 0) |
| 2352 | switch (op) |
| 2353 | { |
| 2354 | case 0: SET_CCREG (pval); break; |
| 2355 | case 1: SET_CCREG (CCREG | pval); break; |
| 2356 | case 2: SET_CCREG (CCREG & pval); break; |
| 2357 | case 3: SET_CCREG (CCREG ^ pval); break; |
| 2358 | } |
| 2359 | else |
| 2360 | { |
| 2361 | switch (op) |
| 2362 | { |
| 2363 | case 0: pval = CCREG; break; |
| 2364 | case 1: pval |= CCREG; break; |
| 2365 | case 2: pval &= CCREG; break; |
| 2366 | case 3: pval ^= CCREG; break; |
| 2367 | } |
| 2368 | TRACE_REGISTER (cpu, "wrote ASTAT[%s] = %i", astat_names[cbit], pval); |
| 2369 | SET_ASTAT ((ASTAT & ~(1 << cbit)) | (pval << cbit)); |
| 2370 | } |
| 2371 | } |
| 2372 | |
| 2373 | static void |
| 2374 | decode_BRCC_0 (SIM_CPU *cpu, bu16 iw0, bu32 pc) |
| 2375 | { |
| 2376 | /* BRCC |
| 2377 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2378 | | 0 | 0 | 0 | 1 |.T.|.B.|.offset................................| |
| 2379 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2380 | int B = ((iw0 >> BRCC_B_bits) & BRCC_B_mask); |
| 2381 | int T = ((iw0 >> BRCC_T_bits) & BRCC_T_mask); |
| 2382 | int offset = ((iw0 >> BRCC_offset_bits) & BRCC_offset_mask); |
| 2383 | int cond = T ? CCREG : ! CCREG; |
| 2384 | int pcrel = pcrel10 (offset); |
| 2385 | |
| 2386 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_BRCC); |
| 2387 | TRACE_EXTRACT (cpu, "%s: T:%i B:%i offset:%#x", __func__, T, B, offset); |
| 2388 | TRACE_DECODE (cpu, "%s: pcrel10:%#x", __func__, pcrel); |
| 2389 | |
| 2390 | TRACE_INSN (cpu, "IF %sCC JUMP %#x%s;", T ? "" : "! ", |
| 2391 | pcrel, B ? " (bp)" : ""); |
| 2392 | |
| 2393 | if (INSN_LEN == 8) |
| 2394 | illegal_instruction_combination (cpu); |
| 2395 | |
| 2396 | if (cond) |
| 2397 | { |
| 2398 | bu32 newpc = pc + pcrel; |
| 2399 | TRACE_BRANCH (cpu, pc, newpc, -1, "Conditional JUMP"); |
| 2400 | SET_PCREG (newpc); |
| 2401 | BFIN_CPU_STATE.did_jump = true; |
| 2402 | PROFILE_BRANCH_TAKEN (cpu); |
| 2403 | CYCLE_DELAY = B ? 5 : 9; |
| 2404 | } |
| 2405 | else |
| 2406 | { |
| 2407 | PROFILE_BRANCH_UNTAKEN (cpu); |
| 2408 | CYCLE_DELAY = B ? 9 : 1; |
| 2409 | } |
| 2410 | } |
| 2411 | |
| 2412 | static void |
| 2413 | decode_UJUMP_0 (SIM_CPU *cpu, bu16 iw0, bu32 pc) |
| 2414 | { |
| 2415 | /* UJUMP |
| 2416 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2417 | | 0 | 0 | 1 | 0 |.offset........................................| |
| 2418 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2419 | int offset = ((iw0 >> UJump_offset_bits) & UJump_offset_mask); |
| 2420 | int pcrel = pcrel12 (offset); |
| 2421 | bu32 newpc = pc + pcrel; |
| 2422 | |
| 2423 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_UJUMP); |
| 2424 | TRACE_EXTRACT (cpu, "%s: offset:%#x", __func__, offset); |
| 2425 | TRACE_DECODE (cpu, "%s: pcrel12:%#x", __func__, pcrel); |
| 2426 | |
| 2427 | TRACE_INSN (cpu, "JUMP.S %#x;", pcrel); |
| 2428 | |
| 2429 | if (INSN_LEN == 8) |
| 2430 | illegal_instruction_combination (cpu); |
| 2431 | |
| 2432 | TRACE_BRANCH (cpu, pc, newpc, -1, "JUMP.S"); |
| 2433 | |
| 2434 | SET_PCREG (newpc); |
| 2435 | BFIN_CPU_STATE.did_jump = true; |
| 2436 | PROFILE_BRANCH_TAKEN (cpu); |
| 2437 | CYCLE_DELAY = 5; |
| 2438 | } |
| 2439 | |
| 2440 | static void |
| 2441 | decode_REGMV_0 (SIM_CPU *cpu, bu16 iw0) |
| 2442 | { |
| 2443 | /* REGMV |
| 2444 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2445 | | 0 | 0 | 1 | 1 |.gd........|.gs........|.dst.......|.src.......| |
| 2446 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2447 | int gs = ((iw0 >> RegMv_gs_bits) & RegMv_gs_mask); |
| 2448 | int gd = ((iw0 >> RegMv_gd_bits) & RegMv_gd_mask); |
| 2449 | int src = ((iw0 >> RegMv_src_bits) & RegMv_src_mask); |
| 2450 | int dst = ((iw0 >> RegMv_dst_bits) & RegMv_dst_mask); |
| 2451 | const char *srcreg_name = get_allreg_name (gs, src); |
| 2452 | const char *dstreg_name = get_allreg_name (gd, dst); |
| 2453 | |
| 2454 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_REGMV); |
| 2455 | TRACE_EXTRACT (cpu, "%s: gd:%i gs:%i dst:%i src:%i", |
| 2456 | __func__, gd, gs, dst, src); |
| 2457 | TRACE_DECODE (cpu, "%s: dst:%s src:%s", __func__, dstreg_name, srcreg_name); |
| 2458 | |
| 2459 | TRACE_INSN (cpu, "%s = %s;", dstreg_name, srcreg_name); |
| 2460 | |
| 2461 | /* Reserved slots cannot be a src/dst. */ |
| 2462 | if (reg_is_reserved (gs, src) || reg_is_reserved (gd, dst)) |
| 2463 | goto invalid_move; |
| 2464 | |
| 2465 | /* Standard register moves. */ |
| 2466 | if ((gs < 2) /* Dregs/Pregs src */ |
| 2467 | || (gd < 2) /* Dregs/Pregs dst */ |
| 2468 | || (gs == 4 && src < 4) /* Accumulators src */ |
| 2469 | || (gd == 4 && dst < 4 && (gs < 4)) /* Accumulators dst */ |
| 2470 | || (gs == 7 && src == 7 && !(gd == 4 && dst < 4)) /* EMUDAT src */ |
| 2471 | || (gd == 7 && dst == 7)) /* EMUDAT dst */ |
| 2472 | goto valid_move; |
| 2473 | |
| 2474 | /* dareg = dareg (IMBL) */ |
| 2475 | if (gs < 4 && gd < 4) |
| 2476 | goto valid_move; |
| 2477 | |
| 2478 | /* USP can be src to sysregs, but not dagregs. */ |
| 2479 | if ((gs == 7 && src == 0) && (gd >= 4)) |
| 2480 | goto valid_move; |
| 2481 | |
| 2482 | /* USP can move between genregs (only check Accumulators). */ |
| 2483 | if (((gs == 7 && src == 0) && (gd == 4 && dst < 4)) |
| 2484 | || ((gd == 7 && dst == 0) && (gs == 4 && src < 4))) |
| 2485 | goto valid_move; |
| 2486 | |
| 2487 | /* Still here ? Invalid reg pair. */ |
| 2488 | invalid_move: |
| 2489 | illegal_instruction (cpu); |
| 2490 | |
| 2491 | valid_move: |
| 2492 | reg_write (cpu, gd, dst, reg_read (cpu, gs, src)); |
| 2493 | } |
| 2494 | |
| 2495 | static void |
| 2496 | decode_ALU2op_0 (SIM_CPU *cpu, bu16 iw0) |
| 2497 | { |
| 2498 | /* ALU2op |
| 2499 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2500 | | 0 | 1 | 0 | 0 | 0 | 0 |.opc...........|.src.......|.dst.......| |
| 2501 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2502 | int src = ((iw0 >> ALU2op_src_bits) & ALU2op_src_mask); |
| 2503 | int opc = ((iw0 >> ALU2op_opc_bits) & ALU2op_opc_mask); |
| 2504 | int dst = ((iw0 >> ALU2op_dst_bits) & ALU2op_dst_mask); |
| 2505 | |
| 2506 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_ALU2op); |
| 2507 | TRACE_EXTRACT (cpu, "%s: opc:%i src:%i dst:%i", __func__, opc, src, dst); |
| 2508 | |
| 2509 | if (opc == 0) |
| 2510 | { |
| 2511 | TRACE_INSN (cpu, "R%i >>>= R%i;", dst, src); |
| 2512 | SET_DREG (dst, ashiftrt (cpu, DREG (dst), DREG (src), 32)); |
| 2513 | } |
| 2514 | else if (opc == 1) |
| 2515 | { |
| 2516 | bu32 val; |
| 2517 | TRACE_INSN (cpu, "R%i >>= R%i;", dst, src); |
| 2518 | if (DREG (src) <= 0x1F) |
| 2519 | val = lshiftrt (cpu, DREG (dst), DREG (src), 32); |
| 2520 | else |
| 2521 | val = 0; |
| 2522 | SET_DREG (dst, val); |
| 2523 | } |
| 2524 | else if (opc == 2) |
| 2525 | { |
| 2526 | TRACE_INSN (cpu, "R%i <<= R%i;", dst, src); |
| 2527 | SET_DREG (dst, lshift (cpu, DREG (dst), DREG (src), 32, 0)); |
| 2528 | } |
| 2529 | else if (opc == 3) |
| 2530 | { |
| 2531 | TRACE_INSN (cpu, "R%i *= R%i;", dst, src); |
| 2532 | SET_DREG (dst, DREG (dst) * DREG (src)); |
| 2533 | CYCLE_DELAY = 3; |
| 2534 | } |
| 2535 | else if (opc == 4) |
| 2536 | { |
| 2537 | TRACE_INSN (cpu, "R%i = (R%i + R%i) << 1;", dst, dst, src); |
| 2538 | SET_DREG (dst, add_and_shift (cpu, DREG (dst), DREG (src), 1)); |
| 2539 | } |
| 2540 | else if (opc == 5) |
| 2541 | { |
| 2542 | TRACE_INSN (cpu, "R%i = (R%i + R%i) << 2;", dst, dst, src); |
| 2543 | SET_DREG (dst, add_and_shift (cpu, DREG (dst), DREG (src), 2)); |
| 2544 | } |
| 2545 | else if (opc == 8) |
| 2546 | { |
| 2547 | TRACE_INSN (cpu, "DIVQ ( R%i, R%i );", dst, src); |
| 2548 | SET_DREG (dst, divq (cpu, DREG (dst), (bu16)DREG (src))); |
| 2549 | } |
| 2550 | else if (opc == 9) |
| 2551 | { |
| 2552 | TRACE_INSN (cpu, "DIVS ( R%i, R%i );", dst, src); |
| 2553 | SET_DREG (dst, divs (cpu, DREG (dst), (bu16)DREG (src))); |
| 2554 | } |
| 2555 | else if (opc == 10) |
| 2556 | { |
| 2557 | TRACE_INSN (cpu, "R%i = R%i.L (X);", dst, src); |
| 2558 | SET_DREG (dst, (bs32) (bs16) DREG (src)); |
| 2559 | setflags_logical (cpu, DREG (dst)); |
| 2560 | } |
| 2561 | else if (opc == 11) |
| 2562 | { |
| 2563 | TRACE_INSN (cpu, "R%i = R%i.L (Z);", dst, src); |
| 2564 | SET_DREG (dst, (bu32) (bu16) DREG (src)); |
| 2565 | setflags_logical (cpu, DREG (dst)); |
| 2566 | } |
| 2567 | else if (opc == 12) |
| 2568 | { |
| 2569 | TRACE_INSN (cpu, "R%i = R%i.B (X);", dst, src); |
| 2570 | SET_DREG (dst, (bs32) (bs8) DREG (src)); |
| 2571 | setflags_logical (cpu, DREG (dst)); |
| 2572 | } |
| 2573 | else if (opc == 13) |
| 2574 | { |
| 2575 | TRACE_INSN (cpu, "R%i = R%i.B (Z);", dst, src); |
| 2576 | SET_DREG (dst, (bu32) (bu8) DREG (src)); |
| 2577 | setflags_logical (cpu, DREG (dst)); |
| 2578 | } |
| 2579 | else if (opc == 14) |
| 2580 | { |
| 2581 | bu32 val = DREG (src); |
| 2582 | TRACE_INSN (cpu, "R%i = - R%i;", dst, src); |
| 2583 | SET_DREG (dst, -val); |
| 2584 | setflags_nz (cpu, DREG (dst)); |
| 2585 | SET_ASTATREG (v, val == 0x80000000); |
| 2586 | if (ASTATREG (v)) |
| 2587 | SET_ASTATREG (vs, 1); |
| 2588 | SET_ASTATREG (ac0, val == 0x0); |
| 2589 | /* XXX: Documentation isn't entirely clear about av0 and av1. */ |
| 2590 | } |
| 2591 | else if (opc == 15) |
| 2592 | { |
| 2593 | TRACE_INSN (cpu, "R%i = ~ R%i;", dst, src); |
| 2594 | SET_DREG (dst, ~DREG (src)); |
| 2595 | setflags_logical (cpu, DREG (dst)); |
| 2596 | } |
| 2597 | else |
| 2598 | illegal_instruction (cpu); |
| 2599 | } |
| 2600 | |
| 2601 | static void |
| 2602 | decode_PTR2op_0 (SIM_CPU *cpu, bu16 iw0) |
| 2603 | { |
| 2604 | /* PTR2op |
| 2605 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2606 | | 0 | 1 | 0 | 0 | 0 | 1 | 0 |.opc.......|.src.......|.dst.......| |
| 2607 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2608 | int src = ((iw0 >> PTR2op_src_bits) & PTR2op_dst_mask); |
| 2609 | int opc = ((iw0 >> PTR2op_opc_bits) & PTR2op_opc_mask); |
| 2610 | int dst = ((iw0 >> PTR2op_dst_bits) & PTR2op_dst_mask); |
| 2611 | const char *src_name = get_preg_name (src); |
| 2612 | const char *dst_name = get_preg_name (dst); |
| 2613 | |
| 2614 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_PTR2op); |
| 2615 | TRACE_EXTRACT (cpu, "%s: opc:%i src:%i dst:%i", __func__, opc, src, dst); |
| 2616 | |
| 2617 | if (opc == 0) |
| 2618 | { |
| 2619 | TRACE_INSN (cpu, "%s -= %s", dst_name, src_name); |
| 2620 | SET_PREG (dst, PREG (dst) - PREG (src)); |
| 2621 | } |
| 2622 | else if (opc == 1) |
| 2623 | { |
| 2624 | TRACE_INSN (cpu, "%s = %s << 2", dst_name, src_name); |
| 2625 | SET_PREG (dst, PREG (src) << 2); |
| 2626 | } |
| 2627 | else if (opc == 3) |
| 2628 | { |
| 2629 | TRACE_INSN (cpu, "%s = %s >> 2", dst_name, src_name); |
| 2630 | SET_PREG (dst, PREG (src) >> 2); |
| 2631 | } |
| 2632 | else if (opc == 4) |
| 2633 | { |
| 2634 | TRACE_INSN (cpu, "%s = %s >> 1", dst_name, src_name); |
| 2635 | SET_PREG (dst, PREG (src) >> 1); |
| 2636 | } |
| 2637 | else if (opc == 5) |
| 2638 | { |
| 2639 | TRACE_INSN (cpu, "%s += %s (BREV)", dst_name, src_name); |
| 2640 | SET_PREG (dst, add_brev (PREG (dst), PREG (src))); |
| 2641 | } |
| 2642 | else if (opc == 6) |
| 2643 | { |
| 2644 | TRACE_INSN (cpu, "%s = (%s + %s) << 1", dst_name, dst_name, src_name); |
| 2645 | SET_PREG (dst, (PREG (dst) + PREG (src)) << 1); |
| 2646 | } |
| 2647 | else if (opc == 7) |
| 2648 | { |
| 2649 | TRACE_INSN (cpu, "%s = (%s + %s) << 2", dst_name, dst_name, src_name); |
| 2650 | SET_PREG (dst, (PREG (dst) + PREG (src)) << 2); |
| 2651 | } |
| 2652 | else |
| 2653 | illegal_instruction (cpu); |
| 2654 | } |
| 2655 | |
| 2656 | static void |
| 2657 | decode_LOGI2op_0 (SIM_CPU *cpu, bu16 iw0) |
| 2658 | { |
| 2659 | /* LOGI2op |
| 2660 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2661 | | 0 | 1 | 0 | 0 | 1 |.opc.......|.src...............|.dst.......| |
| 2662 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2663 | int src = ((iw0 >> LOGI2op_src_bits) & LOGI2op_src_mask); |
| 2664 | int opc = ((iw0 >> LOGI2op_opc_bits) & LOGI2op_opc_mask); |
| 2665 | int dst = ((iw0 >> LOGI2op_dst_bits) & LOGI2op_dst_mask); |
| 2666 | int uimm = uimm5 (src); |
| 2667 | const char *uimm_str = uimm5_str (uimm); |
| 2668 | |
| 2669 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LOGI2op); |
| 2670 | TRACE_EXTRACT (cpu, "%s: opc:%i src:%i dst:%i", __func__, opc, src, dst); |
| 2671 | TRACE_DECODE (cpu, "%s: uimm5:%#x", __func__, uimm); |
| 2672 | |
| 2673 | if (opc == 0) |
| 2674 | { |
| 2675 | TRACE_INSN (cpu, "CC = ! BITTST (R%i, %s);", dst, uimm_str); |
| 2676 | if (INSN_LEN == 8) |
| 2677 | illegal_instruction_combination (cpu); |
| 2678 | SET_CCREG ((~DREG (dst) >> uimm) & 1); |
| 2679 | } |
| 2680 | else if (opc == 1) |
| 2681 | { |
| 2682 | TRACE_INSN (cpu, "CC = BITTST (R%i, %s);", dst, uimm_str); |
| 2683 | if (INSN_LEN == 8) |
| 2684 | illegal_instruction_combination (cpu); |
| 2685 | SET_CCREG ((DREG (dst) >> uimm) & 1); |
| 2686 | } |
| 2687 | else if (opc == 2) |
| 2688 | { |
| 2689 | TRACE_INSN (cpu, "BITSET (R%i, %s);", dst, uimm_str); |
| 2690 | if (INSN_LEN == 8) |
| 2691 | illegal_instruction_combination (cpu); |
| 2692 | SET_DREG (dst, DREG (dst) | (1 << uimm)); |
| 2693 | setflags_logical (cpu, DREG (dst)); |
| 2694 | } |
| 2695 | else if (opc == 3) |
| 2696 | { |
| 2697 | TRACE_INSN (cpu, "BITTGL (R%i, %s);", dst, uimm_str); |
| 2698 | if (INSN_LEN == 8) |
| 2699 | illegal_instruction_combination (cpu); |
| 2700 | SET_DREG (dst, DREG (dst) ^ (1 << uimm)); |
| 2701 | setflags_logical (cpu, DREG (dst)); |
| 2702 | } |
| 2703 | else if (opc == 4) |
| 2704 | { |
| 2705 | TRACE_INSN (cpu, "BITCLR (R%i, %s);", dst, uimm_str); |
| 2706 | if (INSN_LEN == 8) |
| 2707 | illegal_instruction_combination (cpu); |
| 2708 | SET_DREG (dst, DREG (dst) & ~(1 << uimm)); |
| 2709 | setflags_logical (cpu, DREG (dst)); |
| 2710 | } |
| 2711 | else if (opc == 5) |
| 2712 | { |
| 2713 | TRACE_INSN (cpu, "R%i >>>= %s;", dst, uimm_str); |
| 2714 | if (INSN_LEN == 8) |
| 2715 | illegal_instruction_combination (cpu); |
| 2716 | SET_DREG (dst, ashiftrt (cpu, DREG (dst), uimm, 32)); |
| 2717 | } |
| 2718 | else if (opc == 6) |
| 2719 | { |
| 2720 | TRACE_INSN (cpu, "R%i >>= %s;", dst, uimm_str); |
| 2721 | if (INSN_LEN == 8) |
| 2722 | illegal_instruction_combination (cpu); |
| 2723 | SET_DREG (dst, lshiftrt (cpu, DREG (dst), uimm, 32)); |
| 2724 | } |
| 2725 | else if (opc == 7) |
| 2726 | { |
| 2727 | TRACE_INSN (cpu, "R%i <<= %s;", dst, uimm_str); |
| 2728 | if (INSN_LEN == 8) |
| 2729 | illegal_instruction_combination (cpu); |
| 2730 | SET_DREG (dst, lshift (cpu, DREG (dst), uimm, 32, 0)); |
| 2731 | } |
| 2732 | } |
| 2733 | |
| 2734 | static void |
| 2735 | decode_COMP3op_0 (SIM_CPU *cpu, bu16 iw0) |
| 2736 | { |
| 2737 | /* COMP3op |
| 2738 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2739 | | 0 | 1 | 0 | 1 |.opc.......|.dst.......|.src1......|.src0......| |
| 2740 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2741 | int opc = ((iw0 >> COMP3op_opc_bits) & COMP3op_opc_mask); |
| 2742 | int dst = ((iw0 >> COMP3op_dst_bits) & COMP3op_dst_mask); |
| 2743 | int src0 = ((iw0 >> COMP3op_src0_bits) & COMP3op_src0_mask); |
| 2744 | int src1 = ((iw0 >> COMP3op_src1_bits) & COMP3op_src1_mask); |
| 2745 | |
| 2746 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_COMP3op); |
| 2747 | TRACE_EXTRACT (cpu, "%s: opc:%i dst:%i src1:%i src0:%i", |
| 2748 | __func__, opc, dst, src1, src0); |
| 2749 | |
| 2750 | if (opc == 0) |
| 2751 | { |
| 2752 | TRACE_INSN (cpu, "R%i = R%i + R%i;", dst, src0, src1); |
| 2753 | SET_DREG (dst, add32 (cpu, DREG (src0), DREG (src1), 1, 0)); |
| 2754 | } |
| 2755 | else if (opc == 1) |
| 2756 | { |
| 2757 | TRACE_INSN (cpu, "R%i = R%i - R%i;", dst, src0, src1); |
| 2758 | SET_DREG (dst, sub32 (cpu, DREG (src0), DREG (src1), 1, 0, 0)); |
| 2759 | } |
| 2760 | else if (opc == 2) |
| 2761 | { |
| 2762 | TRACE_INSN (cpu, "R%i = R%i & R%i;", dst, src0, src1); |
| 2763 | SET_DREG (dst, DREG (src0) & DREG (src1)); |
| 2764 | setflags_logical (cpu, DREG (dst)); |
| 2765 | } |
| 2766 | else if (opc == 3) |
| 2767 | { |
| 2768 | TRACE_INSN (cpu, "R%i = R%i | R%i;", dst, src0, src1); |
| 2769 | SET_DREG (dst, DREG (src0) | DREG (src1)); |
| 2770 | setflags_logical (cpu, DREG (dst)); |
| 2771 | } |
| 2772 | else if (opc == 4) |
| 2773 | { |
| 2774 | TRACE_INSN (cpu, "R%i = R%i ^ R%i;", dst, src0, src1); |
| 2775 | SET_DREG (dst, DREG (src0) ^ DREG (src1)); |
| 2776 | setflags_logical (cpu, DREG (dst)); |
| 2777 | } |
| 2778 | else |
| 2779 | { |
| 2780 | int shift = opc - 5; |
| 2781 | const char *dst_name = get_preg_name (dst); |
| 2782 | const char *src0_name = get_preg_name (src0); |
| 2783 | const char *src1_name = get_preg_name (src1); |
| 2784 | |
| 2785 | /* If src0 == src1 this is disassembled as a shift by 1, but this |
| 2786 | distinction doesn't matter for our purposes. */ |
| 2787 | if (shift) |
| 2788 | TRACE_INSN (cpu, "%s = (%s + %s) << %#x;", |
| 2789 | dst_name, src0_name, src1_name, shift); |
| 2790 | else |
| 2791 | TRACE_INSN (cpu, "%s = %s + %s", |
| 2792 | dst_name, src0_name, src1_name); |
| 2793 | SET_PREG (dst, PREG (src0) + (PREG (src1) << shift)); |
| 2794 | } |
| 2795 | } |
| 2796 | |
| 2797 | static void |
| 2798 | decode_COMPI2opD_0 (SIM_CPU *cpu, bu16 iw0) |
| 2799 | { |
| 2800 | /* COMPI2opD |
| 2801 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2802 | | 0 | 1 | 1 | 0 | 0 |.op|..src......................|.dst.......| |
| 2803 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2804 | int op = ((iw0 >> COMPI2opD_op_bits) & COMPI2opD_op_mask); |
| 2805 | int dst = ((iw0 >> COMPI2opD_dst_bits) & COMPI2opD_dst_mask); |
| 2806 | int src = ((iw0 >> COMPI2opD_src_bits) & COMPI2opD_src_mask); |
| 2807 | int imm = imm7 (src); |
| 2808 | |
| 2809 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_COMPI2opD); |
| 2810 | TRACE_EXTRACT (cpu, "%s: op:%i src:%i dst:%i", __func__, op, src, dst); |
| 2811 | TRACE_DECODE (cpu, "%s: imm7:%#x", __func__, imm); |
| 2812 | |
| 2813 | if (op == 0) |
| 2814 | { |
| 2815 | TRACE_INSN (cpu, "R%i = %s (X);", dst, imm7_str (imm)); |
| 2816 | SET_DREG (dst, imm); |
| 2817 | } |
| 2818 | else if (op == 1) |
| 2819 | { |
| 2820 | TRACE_INSN (cpu, "R%i += %s;", dst, imm7_str (imm)); |
| 2821 | SET_DREG (dst, add32 (cpu, DREG (dst), imm, 1, 0)); |
| 2822 | } |
| 2823 | } |
| 2824 | |
| 2825 | static void |
| 2826 | decode_COMPI2opP_0 (SIM_CPU *cpu, bu16 iw0) |
| 2827 | { |
| 2828 | /* COMPI2opP |
| 2829 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2830 | | 0 | 1 | 1 | 0 | 1 |.op|.src.......................|.dst.......| |
| 2831 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2832 | int op = ((iw0 >> COMPI2opP_op_bits) & COMPI2opP_op_mask); |
| 2833 | int src = ((iw0 >> COMPI2opP_src_bits) & COMPI2opP_src_mask); |
| 2834 | int dst = ((iw0 >> COMPI2opP_dst_bits) & COMPI2opP_dst_mask); |
| 2835 | int imm = imm7 (src); |
| 2836 | const char *dst_name = get_preg_name (dst); |
| 2837 | |
| 2838 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_COMPI2opP); |
| 2839 | TRACE_EXTRACT (cpu, "%s: op:%i src:%i dst:%i", __func__, op, src, dst); |
| 2840 | TRACE_DECODE (cpu, "%s: imm:%#x", __func__, imm); |
| 2841 | |
| 2842 | if (op == 0) |
| 2843 | { |
| 2844 | TRACE_INSN (cpu, "%s = %s;", dst_name, imm7_str (imm)); |
| 2845 | SET_PREG (dst, imm); |
| 2846 | } |
| 2847 | else if (op == 1) |
| 2848 | { |
| 2849 | TRACE_INSN (cpu, "%s += %s;", dst_name, imm7_str (imm)); |
| 2850 | SET_PREG (dst, PREG (dst) + imm); |
| 2851 | } |
| 2852 | } |
| 2853 | |
| 2854 | static void |
| 2855 | decode_LDSTpmod_0 (SIM_CPU *cpu, bu16 iw0) |
| 2856 | { |
| 2857 | /* LDSTpmod |
| 2858 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2859 | | 1 | 0 | 0 | 0 |.W.|.aop...|.reg.......|.idx.......|.ptr.......| |
| 2860 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2861 | int W = ((iw0 >> LDSTpmod_W_bits) & LDSTpmod_W_mask); |
| 2862 | int aop = ((iw0 >> LDSTpmod_aop_bits) & LDSTpmod_aop_mask); |
| 2863 | int idx = ((iw0 >> LDSTpmod_idx_bits) & LDSTpmod_idx_mask); |
| 2864 | int ptr = ((iw0 >> LDSTpmod_ptr_bits) & LDSTpmod_ptr_mask); |
| 2865 | int reg = ((iw0 >> LDSTpmod_reg_bits) & LDSTpmod_reg_mask); |
| 2866 | const char *ptr_name = get_preg_name (ptr); |
| 2867 | const char *idx_name = get_preg_name (idx); |
| 2868 | bu32 addr, val; |
| 2869 | |
| 2870 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDSTpmod); |
| 2871 | TRACE_EXTRACT (cpu, "%s: W:%i aop:%i reg:%i idx:%i ptr:%i", |
| 2872 | __func__, W, aop, reg, idx, ptr); |
| 2873 | |
| 2874 | if (aop == 1 && W == 0 && idx == ptr) |
| 2875 | { |
| 2876 | TRACE_INSN (cpu, "R%i.L = W[%s];", reg, ptr_name); |
| 2877 | addr = PREG (ptr); |
| 2878 | val = GET_WORD (addr); |
| 2879 | STORE (DREG (reg), (DREG (reg) & 0xFFFF0000) | val); |
| 2880 | } |
| 2881 | else if (aop == 2 && W == 0 && idx == ptr) |
| 2882 | { |
| 2883 | TRACE_INSN (cpu, "R%i.H = W[%s];", reg, ptr_name); |
| 2884 | addr = PREG (ptr); |
| 2885 | val = GET_WORD (addr); |
| 2886 | STORE (DREG (reg), (DREG (reg) & 0xFFFF) | (val << 16)); |
| 2887 | } |
| 2888 | else if (aop == 1 && W == 1 && idx == ptr) |
| 2889 | { |
| 2890 | TRACE_INSN (cpu, "W[%s] = R%i.L;", ptr_name, reg); |
| 2891 | addr = PREG (ptr); |
| 2892 | PUT_WORD (addr, DREG (reg)); |
| 2893 | } |
| 2894 | else if (aop == 2 && W == 1 && idx == ptr) |
| 2895 | { |
| 2896 | TRACE_INSN (cpu, "W[%s] = R%i.H;", ptr_name, reg); |
| 2897 | addr = PREG (ptr); |
| 2898 | PUT_WORD (addr, DREG (reg) >> 16); |
| 2899 | } |
| 2900 | else if (aop == 0 && W == 0) |
| 2901 | { |
| 2902 | TRACE_INSN (cpu, "R%i = [%s ++ %s];", reg, ptr_name, idx_name); |
| 2903 | addr = PREG (ptr); |
| 2904 | val = GET_LONG (addr); |
| 2905 | STORE (DREG (reg), val); |
| 2906 | if (ptr != idx) |
| 2907 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2908 | } |
| 2909 | else if (aop == 1 && W == 0) |
| 2910 | { |
| 2911 | TRACE_INSN (cpu, "R%i.L = W[%s ++ %s];", reg, ptr_name, idx_name); |
| 2912 | addr = PREG (ptr); |
| 2913 | val = GET_WORD (addr); |
| 2914 | STORE (DREG (reg), (DREG (reg) & 0xFFFF0000) | val); |
| 2915 | if (ptr != idx) |
| 2916 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2917 | } |
| 2918 | else if (aop == 2 && W == 0) |
| 2919 | { |
| 2920 | TRACE_INSN (cpu, "R%i.H = W[%s ++ %s];", reg, ptr_name, idx_name); |
| 2921 | addr = PREG (ptr); |
| 2922 | val = GET_WORD (addr); |
| 2923 | STORE (DREG (reg), (DREG (reg) & 0xFFFF) | (val << 16)); |
| 2924 | if (ptr != idx) |
| 2925 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2926 | } |
| 2927 | else if (aop == 3 && W == 0) |
| 2928 | { |
| 2929 | TRACE_INSN (cpu, "R%i = W[%s ++ %s] (Z);", reg, ptr_name, idx_name); |
| 2930 | addr = PREG (ptr); |
| 2931 | val = GET_WORD (addr); |
| 2932 | STORE (DREG (reg), val); |
| 2933 | if (ptr != idx) |
| 2934 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2935 | } |
| 2936 | else if (aop == 3 && W == 1) |
| 2937 | { |
| 2938 | TRACE_INSN (cpu, "R%i = W[%s ++ %s] (X);", reg, ptr_name, idx_name); |
| 2939 | addr = PREG (ptr); |
| 2940 | val = GET_WORD (addr); |
| 2941 | STORE (DREG (reg), (bs32) (bs16) val); |
| 2942 | if (ptr != idx) |
| 2943 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2944 | } |
| 2945 | else if (aop == 0 && W == 1) |
| 2946 | { |
| 2947 | TRACE_INSN (cpu, "[%s ++ %s] = R%i;", ptr_name, idx_name, reg); |
| 2948 | addr = PREG (ptr); |
| 2949 | PUT_LONG (addr, DREG (reg)); |
| 2950 | if (ptr != idx) |
| 2951 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2952 | } |
| 2953 | else if (aop == 1 && W == 1) |
| 2954 | { |
| 2955 | TRACE_INSN (cpu, "W[%s ++ %s] = R%i.L;", ptr_name, idx_name, reg); |
| 2956 | addr = PREG (ptr); |
| 2957 | PUT_WORD (addr, DREG (reg)); |
| 2958 | if (ptr != idx) |
| 2959 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2960 | } |
| 2961 | else if (aop == 2 && W == 1) |
| 2962 | { |
| 2963 | TRACE_INSN (cpu, "W[%s ++ %s] = R%i.H;", ptr_name, idx_name, reg); |
| 2964 | addr = PREG (ptr); |
| 2965 | PUT_WORD (addr, DREG (reg) >> 16); |
| 2966 | if (ptr != idx) |
| 2967 | STORE (PREG (ptr), addr + PREG (idx)); |
| 2968 | } |
| 2969 | else |
| 2970 | illegal_instruction (cpu); |
| 2971 | } |
| 2972 | |
| 2973 | static void |
| 2974 | decode_dagMODim_0 (SIM_CPU *cpu, bu16 iw0) |
| 2975 | { |
| 2976 | /* dagMODim |
| 2977 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 2978 | | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |.br| 1 | 1 |.op|.m.....|.i.....| |
| 2979 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 2980 | int i = ((iw0 >> DagMODim_i_bits) & DagMODim_i_mask); |
| 2981 | int m = ((iw0 >> DagMODim_m_bits) & DagMODim_m_mask); |
| 2982 | int br = ((iw0 >> DagMODim_br_bits) & DagMODim_br_mask); |
| 2983 | int op = ((iw0 >> DagMODim_op_bits) & DagMODim_op_mask); |
| 2984 | |
| 2985 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dagMODim); |
| 2986 | TRACE_EXTRACT (cpu, "%s: br:%i op:%i m:%i i:%i", __func__, br, op, m, i); |
| 2987 | |
| 2988 | if (op == 0 && br == 1) |
| 2989 | { |
| 2990 | TRACE_INSN (cpu, "I%i += M%i (BREV);", i, m); |
| 2991 | SET_IREG (i, add_brev (IREG (i), MREG (m))); |
| 2992 | } |
| 2993 | else if (op == 0) |
| 2994 | { |
| 2995 | TRACE_INSN (cpu, "I%i += M%i;", i, m); |
| 2996 | dagadd (cpu, i, MREG (m)); |
| 2997 | } |
| 2998 | else if (op == 1 && br == 0) |
| 2999 | { |
| 3000 | TRACE_INSN (cpu, "I%i -= M%i;", i, m); |
| 3001 | dagsub (cpu, i, MREG (m)); |
| 3002 | } |
| 3003 | else |
| 3004 | illegal_instruction (cpu); |
| 3005 | } |
| 3006 | |
| 3007 | static void |
| 3008 | decode_dagMODik_0 (SIM_CPU *cpu, bu16 iw0) |
| 3009 | { |
| 3010 | /* dagMODik |
| 3011 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3012 | | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 |.op....|.i.....| |
| 3013 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3014 | int i = ((iw0 >> DagMODik_i_bits) & DagMODik_i_mask); |
| 3015 | int op = ((iw0 >> DagMODik_op_bits) & DagMODik_op_mask); |
| 3016 | |
| 3017 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dagMODik); |
| 3018 | TRACE_EXTRACT (cpu, "%s: op:%i i:%i", __func__, op, i); |
| 3019 | |
| 3020 | if (op == 0) |
| 3021 | { |
| 3022 | TRACE_INSN (cpu, "I%i += 2;", i); |
| 3023 | dagadd (cpu, i, 2); |
| 3024 | } |
| 3025 | else if (op == 1) |
| 3026 | { |
| 3027 | TRACE_INSN (cpu, "I%i -= 2;", i); |
| 3028 | dagsub (cpu, i, 2); |
| 3029 | } |
| 3030 | else if (op == 2) |
| 3031 | { |
| 3032 | TRACE_INSN (cpu, "I%i += 4;", i); |
| 3033 | dagadd (cpu, i, 4); |
| 3034 | } |
| 3035 | else if (op == 3) |
| 3036 | { |
| 3037 | TRACE_INSN (cpu, "I%i -= 4;", i); |
| 3038 | dagsub (cpu, i, 4); |
| 3039 | } |
| 3040 | else |
| 3041 | illegal_instruction (cpu); |
| 3042 | } |
| 3043 | |
| 3044 | static void |
| 3045 | decode_dspLDST_0 (SIM_CPU *cpu, bu16 iw0) |
| 3046 | { |
| 3047 | /* dspLDST |
| 3048 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3049 | | 1 | 0 | 0 | 1 | 1 | 1 |.W.|.aop...|.m.....|.i.....|.reg.......| |
| 3050 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3051 | int i = ((iw0 >> DspLDST_i_bits) & DspLDST_i_mask); |
| 3052 | int m = ((iw0 >> DspLDST_m_bits) & DspLDST_m_mask); |
| 3053 | int W = ((iw0 >> DspLDST_W_bits) & DspLDST_W_mask); |
| 3054 | int aop = ((iw0 >> DspLDST_aop_bits) & DspLDST_aop_mask); |
| 3055 | int reg = ((iw0 >> DspLDST_reg_bits) & DspLDST_reg_mask); |
| 3056 | bu32 addr; |
| 3057 | |
| 3058 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dspLDST); |
| 3059 | TRACE_EXTRACT (cpu, "%s: aop:%i m:%i i:%i reg:%i", __func__, aop, m, i, reg); |
| 3060 | |
| 3061 | if (aop == 0 && W == 0 && m == 0) |
| 3062 | { |
| 3063 | TRACE_INSN (cpu, "R%i = [I%i++];", reg, i); |
| 3064 | addr = IREG (i); |
| 3065 | if (DIS_ALGN_EXPT & 0x1) |
| 3066 | addr &= ~3; |
| 3067 | dagadd (cpu, i, 4); |
| 3068 | STORE (DREG (reg), GET_LONG (addr)); |
| 3069 | } |
| 3070 | else if (aop == 0 && W == 0 && m == 1) |
| 3071 | { |
| 3072 | TRACE_INSN (cpu, "R%i.L = W[I%i++];", reg, i); |
| 3073 | addr = IREG (i); |
| 3074 | dagadd (cpu, i, 2); |
| 3075 | STORE (DREG (reg), (DREG (reg) & 0xFFFF0000) | GET_WORD (addr)); |
| 3076 | } |
| 3077 | else if (aop == 0 && W == 0 && m == 2) |
| 3078 | { |
| 3079 | TRACE_INSN (cpu, "R%i.H = W[I%i++];", reg, i); |
| 3080 | addr = IREG (i); |
| 3081 | dagadd (cpu, i, 2); |
| 3082 | STORE (DREG (reg), (DREG (reg) & 0xFFFF) | (GET_WORD (addr) << 16)); |
| 3083 | } |
| 3084 | else if (aop == 1 && W == 0 && m == 0) |
| 3085 | { |
| 3086 | TRACE_INSN (cpu, "R%i = [I%i--];", reg, i); |
| 3087 | addr = IREG (i); |
| 3088 | if (DIS_ALGN_EXPT & 0x1) |
| 3089 | addr &= ~3; |
| 3090 | dagsub (cpu, i, 4); |
| 3091 | STORE (DREG (reg), GET_LONG (addr)); |
| 3092 | } |
| 3093 | else if (aop == 1 && W == 0 && m == 1) |
| 3094 | { |
| 3095 | TRACE_INSN (cpu, "R%i.L = W[I%i--];", reg, i); |
| 3096 | addr = IREG (i); |
| 3097 | dagsub (cpu, i, 2); |
| 3098 | STORE (DREG (reg), (DREG (reg) & 0xFFFF0000) | GET_WORD (addr)); |
| 3099 | } |
| 3100 | else if (aop == 1 && W == 0 && m == 2) |
| 3101 | { |
| 3102 | TRACE_INSN (cpu, "R%i.H = W[I%i--];", reg, i); |
| 3103 | addr = IREG (i); |
| 3104 | dagsub (cpu, i, 2); |
| 3105 | STORE (DREG (reg), (DREG (reg) & 0xFFFF) | (GET_WORD (addr) << 16)); |
| 3106 | } |
| 3107 | else if (aop == 2 && W == 0 && m == 0) |
| 3108 | { |
| 3109 | TRACE_INSN (cpu, "R%i = [I%i];", reg, i); |
| 3110 | addr = IREG (i); |
| 3111 | if (DIS_ALGN_EXPT & 0x1) |
| 3112 | addr &= ~3; |
| 3113 | STORE (DREG (reg), GET_LONG (addr)); |
| 3114 | } |
| 3115 | else if (aop == 2 && W == 0 && m == 1) |
| 3116 | { |
| 3117 | TRACE_INSN (cpu, "R%i.L = W[I%i];", reg, i); |
| 3118 | addr = IREG (i); |
| 3119 | STORE (DREG (reg), (DREG (reg) & 0xFFFF0000) | GET_WORD (addr)); |
| 3120 | } |
| 3121 | else if (aop == 2 && W == 0 && m == 2) |
| 3122 | { |
| 3123 | TRACE_INSN (cpu, "R%i.H = W[I%i];", reg, i); |
| 3124 | addr = IREG (i); |
| 3125 | STORE (DREG (reg), (DREG (reg) & 0xFFFF) | (GET_WORD (addr) << 16)); |
| 3126 | } |
| 3127 | else if (aop == 0 && W == 1 && m == 0) |
| 3128 | { |
| 3129 | TRACE_INSN (cpu, "[I%i++] = R%i;", i, reg); |
| 3130 | addr = IREG (i); |
| 3131 | dagadd (cpu, i, 4); |
| 3132 | PUT_LONG (addr, DREG (reg)); |
| 3133 | } |
| 3134 | else if (aop == 0 && W == 1 && m == 1) |
| 3135 | { |
| 3136 | TRACE_INSN (cpu, "W[I%i++] = R%i.L;", i, reg); |
| 3137 | addr = IREG (i); |
| 3138 | dagadd (cpu, i, 2); |
| 3139 | PUT_WORD (addr, DREG (reg)); |
| 3140 | } |
| 3141 | else if (aop == 0 && W == 1 && m == 2) |
| 3142 | { |
| 3143 | TRACE_INSN (cpu, "W[I%i++] = R%i.H;", i, reg); |
| 3144 | addr = IREG (i); |
| 3145 | dagadd (cpu, i, 2); |
| 3146 | PUT_WORD (addr, DREG (reg) >> 16); |
| 3147 | } |
| 3148 | else if (aop == 1 && W == 1 && m == 0) |
| 3149 | { |
| 3150 | TRACE_INSN (cpu, "[I%i--] = R%i;", i, reg); |
| 3151 | addr = IREG (i); |
| 3152 | dagsub (cpu, i, 4); |
| 3153 | PUT_LONG (addr, DREG (reg)); |
| 3154 | } |
| 3155 | else if (aop == 1 && W == 1 && m == 1) |
| 3156 | { |
| 3157 | TRACE_INSN (cpu, "W[I%i--] = R%i.L;", i, reg); |
| 3158 | addr = IREG (i); |
| 3159 | dagsub (cpu, i, 2); |
| 3160 | PUT_WORD (addr, DREG (reg)); |
| 3161 | } |
| 3162 | else if (aop == 1 && W == 1 && m == 2) |
| 3163 | { |
| 3164 | TRACE_INSN (cpu, "W[I%i--] = R%i.H;", i, reg); |
| 3165 | addr = IREG (i); |
| 3166 | dagsub (cpu, i, 2); |
| 3167 | PUT_WORD (addr, DREG (reg) >> 16); |
| 3168 | } |
| 3169 | else if (aop == 2 && W == 1 && m == 0) |
| 3170 | { |
| 3171 | TRACE_INSN (cpu, "[I%i] = R%i;", i, reg); |
| 3172 | addr = IREG (i); |
| 3173 | PUT_LONG (addr, DREG (reg)); |
| 3174 | } |
| 3175 | else if (aop == 2 && W == 1 && m == 1) |
| 3176 | { |
| 3177 | TRACE_INSN (cpu, "W[I%i] = R%i.L;", i, reg); |
| 3178 | addr = IREG (i); |
| 3179 | PUT_WORD (addr, DREG (reg)); |
| 3180 | } |
| 3181 | else if (aop == 2 && W == 1 && m == 2) |
| 3182 | { |
| 3183 | TRACE_INSN (cpu, "W[I%i] = R%i.H;", i, reg); |
| 3184 | addr = IREG (i); |
| 3185 | PUT_WORD (addr, DREG (reg) >> 16); |
| 3186 | } |
| 3187 | else if (aop == 3 && W == 0) |
| 3188 | { |
| 3189 | TRACE_INSN (cpu, "R%i = [I%i ++ M%i];", reg, i, m); |
| 3190 | addr = IREG (i); |
| 3191 | if (DIS_ALGN_EXPT & 0x1) |
| 3192 | addr &= ~3; |
| 3193 | dagadd (cpu, i, MREG (m)); |
| 3194 | STORE (DREG (reg), GET_LONG (addr)); |
| 3195 | } |
| 3196 | else if (aop == 3 && W == 1) |
| 3197 | { |
| 3198 | TRACE_INSN (cpu, "[I%i ++ M%i] = R%i;", i, m, reg); |
| 3199 | addr = IREG (i); |
| 3200 | dagadd (cpu, i, MREG (m)); |
| 3201 | PUT_LONG (addr, DREG (reg)); |
| 3202 | } |
| 3203 | else |
| 3204 | illegal_instruction (cpu); |
| 3205 | } |
| 3206 | |
| 3207 | static void |
| 3208 | decode_LDST_0 (SIM_CPU *cpu, bu16 iw0) |
| 3209 | { |
| 3210 | /* LDST |
| 3211 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3212 | | 1 | 0 | 0 | 1 |.sz....|.W.|.aop...|.Z.|.ptr.......|.reg.......| |
| 3213 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3214 | int Z = ((iw0 >> LDST_Z_bits) & LDST_Z_mask); |
| 3215 | int W = ((iw0 >> LDST_W_bits) & LDST_W_mask); |
| 3216 | int sz = ((iw0 >> LDST_sz_bits) & LDST_sz_mask); |
| 3217 | int aop = ((iw0 >> LDST_aop_bits) & LDST_aop_mask); |
| 3218 | int reg = ((iw0 >> LDST_reg_bits) & LDST_reg_mask); |
| 3219 | int ptr = ((iw0 >> LDST_ptr_bits) & LDST_ptr_mask); |
| 3220 | const char * const posts[] = { "++", "--", "" }; |
| 3221 | const char *post = posts[aop]; |
| 3222 | const char *ptr_name = get_preg_name (ptr); |
| 3223 | |
| 3224 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDST); |
| 3225 | TRACE_EXTRACT (cpu, "%s: sz:%i W:%i aop:%i Z:%i ptr:%i reg:%i", |
| 3226 | __func__, sz, W, aop, Z, ptr, reg); |
| 3227 | |
| 3228 | if (aop == 3) |
| 3229 | illegal_instruction (cpu); |
| 3230 | |
| 3231 | if (W == 0) |
| 3232 | { |
| 3233 | if (sz == 0 && Z == 0) |
| 3234 | { |
| 3235 | TRACE_INSN (cpu, "R%i = [%s%s];", reg, ptr_name, post); |
| 3236 | SET_DREG (reg, GET_LONG (PREG (ptr))); |
| 3237 | } |
| 3238 | else if (sz == 0 && Z == 1) |
| 3239 | { |
| 3240 | TRACE_INSN (cpu, "%s = [%s%s];", get_preg_name (reg), ptr_name, post); |
| 3241 | if (aop < 2 && ptr == reg) |
| 3242 | illegal_instruction_combination (cpu); |
| 3243 | SET_PREG (reg, GET_LONG (PREG (ptr))); |
| 3244 | } |
| 3245 | else if (sz == 1 && Z == 0) |
| 3246 | { |
| 3247 | TRACE_INSN (cpu, "R%i = W[%s%s] (Z);", reg, ptr_name, post); |
| 3248 | SET_DREG (reg, GET_WORD (PREG (ptr))); |
| 3249 | } |
| 3250 | else if (sz == 1 && Z == 1) |
| 3251 | { |
| 3252 | TRACE_INSN (cpu, "R%i = W[%s%s] (X);", reg, ptr_name, post); |
| 3253 | SET_DREG (reg, (bs32) (bs16) GET_WORD (PREG (ptr))); |
| 3254 | } |
| 3255 | else if (sz == 2 && Z == 0) |
| 3256 | { |
| 3257 | TRACE_INSN (cpu, "R%i = B[%s%s] (Z);", reg, ptr_name, post); |
| 3258 | SET_DREG (reg, GET_BYTE (PREG (ptr))); |
| 3259 | } |
| 3260 | else if (sz == 2 && Z == 1) |
| 3261 | { |
| 3262 | TRACE_INSN (cpu, "R%i = B[%s%s] (X);", reg, ptr_name, post); |
| 3263 | SET_DREG (reg, (bs32) (bs8) GET_BYTE (PREG (ptr))); |
| 3264 | } |
| 3265 | else |
| 3266 | illegal_instruction (cpu); |
| 3267 | } |
| 3268 | else |
| 3269 | { |
| 3270 | if (sz == 0 && Z == 0) |
| 3271 | { |
| 3272 | TRACE_INSN (cpu, "[%s%s] = R%i;", ptr_name, post, reg); |
| 3273 | PUT_LONG (PREG (ptr), DREG (reg)); |
| 3274 | } |
| 3275 | else if (sz == 0 && Z == 1) |
| 3276 | { |
| 3277 | TRACE_INSN (cpu, "[%s%s] = %s;", ptr_name, post, get_preg_name (reg)); |
| 3278 | PUT_LONG (PREG (ptr), PREG (reg)); |
| 3279 | } |
| 3280 | else if (sz == 1 && Z == 0) |
| 3281 | { |
| 3282 | TRACE_INSN (cpu, "W[%s%s] = R%i;", ptr_name, post, reg); |
| 3283 | PUT_WORD (PREG (ptr), DREG (reg)); |
| 3284 | } |
| 3285 | else if (sz == 2 && Z == 0) |
| 3286 | { |
| 3287 | TRACE_INSN (cpu, "B[%s%s] = R%i;", ptr_name, post, reg); |
| 3288 | PUT_BYTE (PREG (ptr), DREG (reg)); |
| 3289 | } |
| 3290 | else |
| 3291 | illegal_instruction (cpu); |
| 3292 | } |
| 3293 | |
| 3294 | if (aop == 0) |
| 3295 | SET_PREG (ptr, PREG (ptr) + (1 << (2 - sz))); |
| 3296 | if (aop == 1) |
| 3297 | SET_PREG (ptr, PREG (ptr) - (1 << (2 - sz))); |
| 3298 | } |
| 3299 | |
| 3300 | static void |
| 3301 | decode_LDSTiiFP_0 (SIM_CPU *cpu, bu16 iw0) |
| 3302 | { |
| 3303 | /* LDSTiiFP |
| 3304 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3305 | | 1 | 0 | 1 | 1 | 1 | 0 |.W.|.offset............|.reg...........| |
| 3306 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3307 | /* This isn't exactly a grp:reg as this insn only supports Dregs & Pregs, |
| 3308 | but for our usage, its functionality the same thing. */ |
| 3309 | int grp = ((iw0 >> 3) & 0x1); |
| 3310 | int reg = ((iw0 >> LDSTiiFP_reg_bits) & 0x7 /*LDSTiiFP_reg_mask*/); |
| 3311 | int offset = ((iw0 >> LDSTiiFP_offset_bits) & LDSTiiFP_offset_mask); |
| 3312 | int W = ((iw0 >> LDSTiiFP_W_bits) & LDSTiiFP_W_mask); |
| 3313 | bu32 imm = negimm5s4 (offset); |
| 3314 | bu32 ea = FPREG + imm; |
| 3315 | const char *imm_str = negimm5s4_str (offset); |
| 3316 | const char *reg_name = get_allreg_name (grp, reg); |
| 3317 | |
| 3318 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDSTiiFP); |
| 3319 | TRACE_EXTRACT (cpu, "%s: W:%i offset:%#x grp:%i reg:%i", __func__, |
| 3320 | W, offset, grp, reg); |
| 3321 | TRACE_DECODE (cpu, "%s: negimm5s4:%#x", __func__, imm); |
| 3322 | |
| 3323 | if (W == 0) |
| 3324 | { |
| 3325 | TRACE_INSN (cpu, "%s = [FP + %s];", reg_name, imm_str); |
| 3326 | reg_write (cpu, grp, reg, GET_LONG (ea)); |
| 3327 | } |
| 3328 | else |
| 3329 | { |
| 3330 | TRACE_INSN (cpu, "[FP + %s] = %s;", imm_str, reg_name); |
| 3331 | PUT_LONG (ea, reg_read (cpu, grp, reg)); |
| 3332 | } |
| 3333 | } |
| 3334 | |
| 3335 | static void |
| 3336 | decode_LDSTii_0 (SIM_CPU *cpu, bu16 iw0) |
| 3337 | { |
| 3338 | /* LDSTii |
| 3339 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3340 | | 1 | 0 | 1 |.W.|.op....|.offset........|.ptr.......|.reg.......| |
| 3341 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3342 | int reg = ((iw0 >> LDSTii_reg_bit) & LDSTii_reg_mask); |
| 3343 | int ptr = ((iw0 >> LDSTii_ptr_bit) & LDSTii_ptr_mask); |
| 3344 | int offset = ((iw0 >> LDSTii_offset_bit) & LDSTii_offset_mask); |
| 3345 | int op = ((iw0 >> LDSTii_op_bit) & LDSTii_op_mask); |
| 3346 | int W = ((iw0 >> LDSTii_W_bit) & LDSTii_W_mask); |
| 3347 | bu32 imm, ea; |
| 3348 | const char *imm_str; |
| 3349 | const char *ptr_name = get_preg_name (ptr); |
| 3350 | |
| 3351 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDSTii); |
| 3352 | TRACE_EXTRACT (cpu, "%s: W:%i op:%i offset:%#x ptr:%i reg:%i", |
| 3353 | __func__, W, op, offset, ptr, reg); |
| 3354 | |
| 3355 | if (op == 0 || op == 3) |
| 3356 | imm = uimm4s4 (offset), imm_str = uimm4s4_str (offset); |
| 3357 | else |
| 3358 | imm = uimm4s2 (offset), imm_str = uimm4s2_str (offset); |
| 3359 | ea = PREG (ptr) + imm; |
| 3360 | |
| 3361 | TRACE_DECODE (cpu, "%s: uimm4s4/uimm4s2:%#x", __func__, imm); |
| 3362 | |
| 3363 | if (W == 1 && op == 2) |
| 3364 | illegal_instruction (cpu); |
| 3365 | |
| 3366 | if (W == 0) |
| 3367 | { |
| 3368 | if (op == 0) |
| 3369 | { |
| 3370 | TRACE_INSN (cpu, "R%i = [%s + %s];", reg, ptr_name, imm_str); |
| 3371 | SET_DREG (reg, GET_LONG (ea)); |
| 3372 | } |
| 3373 | else if (op == 1) |
| 3374 | { |
| 3375 | TRACE_INSN (cpu, "R%i = W[%s + %s] (Z);", reg, ptr_name, imm_str); |
| 3376 | SET_DREG (reg, GET_WORD (ea)); |
| 3377 | } |
| 3378 | else if (op == 2) |
| 3379 | { |
| 3380 | TRACE_INSN (cpu, "R%i = W[%s + %s] (X);", reg, ptr_name, imm_str); |
| 3381 | SET_DREG (reg, (bs32) (bs16) GET_WORD (ea)); |
| 3382 | } |
| 3383 | else if (op == 3) |
| 3384 | { |
| 3385 | TRACE_INSN (cpu, "%s = [%s + %s];", |
| 3386 | get_preg_name (reg), ptr_name, imm_str); |
| 3387 | SET_PREG (reg, GET_LONG (ea)); |
| 3388 | } |
| 3389 | } |
| 3390 | else |
| 3391 | { |
| 3392 | if (op == 0) |
| 3393 | { |
| 3394 | TRACE_INSN (cpu, "[%s + %s] = R%i;", ptr_name, imm_str, reg); |
| 3395 | PUT_LONG (ea, DREG (reg)); |
| 3396 | } |
| 3397 | else if (op == 1) |
| 3398 | { |
| 3399 | TRACE_INSN (cpu, "W[%s + %s] = R%i;", ptr_name, imm_str, reg); |
| 3400 | PUT_WORD (ea, DREG (reg)); |
| 3401 | } |
| 3402 | else if (op == 3) |
| 3403 | { |
| 3404 | TRACE_INSN (cpu, "[%s + %s] = %s;", |
| 3405 | ptr_name, imm_str, get_preg_name (reg)); |
| 3406 | PUT_LONG (ea, PREG (reg)); |
| 3407 | } |
| 3408 | } |
| 3409 | } |
| 3410 | |
| 3411 | static void |
| 3412 | decode_LoopSetup_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1, bu32 pc) |
| 3413 | { |
| 3414 | /* LoopSetup |
| 3415 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3416 | | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |.rop...|.c.|.soffset.......| |
| 3417 | |.reg...........| - | - |.eoffset...............................| |
| 3418 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3419 | int c = ((iw0 >> (LoopSetup_c_bits - 16)) & LoopSetup_c_mask); |
| 3420 | int reg = ((iw1 >> LoopSetup_reg_bits) & LoopSetup_reg_mask); |
| 3421 | int rop = ((iw0 >> (LoopSetup_rop_bits - 16)) & LoopSetup_rop_mask); |
| 3422 | int soffset = ((iw0 >> (LoopSetup_soffset_bits - 16)) & LoopSetup_soffset_mask); |
| 3423 | int eoffset = ((iw1 >> LoopSetup_eoffset_bits) & LoopSetup_eoffset_mask); |
| 3424 | int spcrel = pcrel4 (soffset); |
| 3425 | int epcrel = lppcrel10 (eoffset); |
| 3426 | |
| 3427 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LoopSetup); |
| 3428 | TRACE_EXTRACT (cpu, "%s: rop:%i c:%i soffset:%i reg:%i eoffset:%i", |
| 3429 | __func__, rop, c, soffset, reg, eoffset); |
| 3430 | TRACE_DECODE (cpu, "%s: s_pcrel4:%#x e_lppcrel10:%#x", |
| 3431 | __func__, spcrel, epcrel); |
| 3432 | |
| 3433 | if (reg > 7) |
| 3434 | illegal_instruction (cpu); |
| 3435 | |
| 3436 | if (INSN_LEN == 8) |
| 3437 | illegal_instruction_combination (cpu); |
| 3438 | |
| 3439 | if (rop == 0) |
| 3440 | { |
| 3441 | TRACE_INSN (cpu, "LSETUP (%#x, %#x) LC%i;", spcrel, epcrel, c); |
| 3442 | } |
| 3443 | else if (rop == 1 && reg <= 7) |
| 3444 | { |
| 3445 | TRACE_INSN (cpu, "LSETUP (%#x, %#x) LC%i = %s;", |
| 3446 | spcrel, epcrel, c, get_preg_name (reg)); |
| 3447 | SET_LCREG (c, PREG (reg)); |
| 3448 | } |
| 3449 | else if (rop == 3 && reg <= 7) |
| 3450 | { |
| 3451 | TRACE_INSN (cpu, "LSETUP (%#x, %#x) LC%i = %s >> 1;", |
| 3452 | spcrel, epcrel, c, get_preg_name (reg)); |
| 3453 | SET_LCREG (c, PREG (reg) >> 1); |
| 3454 | } |
| 3455 | else |
| 3456 | illegal_instruction (cpu); |
| 3457 | |
| 3458 | SET_LTREG (c, pc + spcrel); |
| 3459 | SET_LBREG (c, pc + epcrel); |
| 3460 | } |
| 3461 | |
| 3462 | static void |
| 3463 | decode_LDIMMhalf_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3464 | { |
| 3465 | /* LDIMMhalf |
| 3466 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3467 | | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |.Z.|.H.|.S.|.grp...|.reg.......| |
| 3468 | |.hword.........................................................| |
| 3469 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3470 | int H = ((iw0 >> (LDIMMhalf_H_bits - 16)) & LDIMMhalf_H_mask); |
| 3471 | int Z = ((iw0 >> (LDIMMhalf_Z_bits - 16)) & LDIMMhalf_Z_mask); |
| 3472 | int S = ((iw0 >> (LDIMMhalf_S_bits - 16)) & LDIMMhalf_S_mask); |
| 3473 | int reg = ((iw0 >> (LDIMMhalf_reg_bits - 16)) & LDIMMhalf_reg_mask); |
| 3474 | int grp = ((iw0 >> (LDIMMhalf_grp_bits - 16)) & LDIMMhalf_grp_mask); |
| 3475 | int hword = ((iw1 >> LDIMMhalf_hword_bits) & LDIMMhalf_hword_mask); |
| 3476 | bu32 val; |
| 3477 | const char *val_str; |
| 3478 | const char *reg_name = get_allreg_name (grp, reg); |
| 3479 | |
| 3480 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDIMMhalf); |
| 3481 | TRACE_EXTRACT (cpu, "%s: Z:%i H:%i S:%i grp:%i reg:%i hword:%#x", |
| 3482 | __func__, Z, H, S, grp, reg, hword); |
| 3483 | |
| 3484 | if (INSN_LEN == 8) |
| 3485 | illegal_instruction_combination (cpu); |
| 3486 | |
| 3487 | if (S == 1) |
| 3488 | val = imm16 (hword), val_str = imm16_str (hword); |
| 3489 | else |
| 3490 | val = luimm16 (hword), val_str = luimm16_str (hword); |
| 3491 | |
| 3492 | if (H == 0 && S == 1 && Z == 0) |
| 3493 | { |
| 3494 | TRACE_INSN (cpu, "%s = %s (X);", reg_name, val_str); |
| 3495 | } |
| 3496 | else if (H == 0 && S == 0 && Z == 1) |
| 3497 | { |
| 3498 | TRACE_INSN (cpu, "%s = %s (Z);", reg_name, val_str); |
| 3499 | } |
| 3500 | else if (H == 0 && S == 0 && Z == 0) |
| 3501 | { |
| 3502 | TRACE_INSN (cpu, "%s.L = %s;", reg_name, val_str); |
| 3503 | val = REG_H_L (reg_read (cpu, grp, reg), val); |
| 3504 | } |
| 3505 | else if (H == 1 && S == 0 && Z == 0) |
| 3506 | { |
| 3507 | TRACE_INSN (cpu, "%s.H = %s;", reg_name, val_str); |
| 3508 | val = REG_H_L (val << 16, reg_read (cpu, grp, reg)); |
| 3509 | } |
| 3510 | else |
| 3511 | illegal_instruction (cpu); |
| 3512 | |
| 3513 | reg_write (cpu, grp, reg, val); |
| 3514 | } |
| 3515 | |
| 3516 | static void |
| 3517 | decode_CALLa_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1, bu32 pc) |
| 3518 | { |
| 3519 | /* CALLa |
| 3520 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3521 | | 1 | 1 | 1 | 0 | 0 | 0 | 1 |.S.|.msw...........................| |
| 3522 | |.lsw...........................................................| |
| 3523 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3524 | int S = ((iw0 >> (CALLa_S_bits - 16)) & CALLa_S_mask); |
| 3525 | int lsw = ((iw1 >> 0) & 0xffff); |
| 3526 | int msw = ((iw0 >> 0) & 0xff); |
| 3527 | int pcrel = pcrel24 ((msw << 16) | lsw); |
| 3528 | bu32 newpc = pc + pcrel; |
| 3529 | |
| 3530 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_CALLa); |
| 3531 | TRACE_EXTRACT (cpu, "%s: S:%i msw:%#x lsw:%#x", __func__, S, msw, lsw); |
| 3532 | TRACE_DECODE (cpu, "%s: pcrel24:%#x", __func__, pcrel); |
| 3533 | |
| 3534 | TRACE_INSN (cpu, "%s %#x;", S ? "CALL" : "JUMP.L", pcrel); |
| 3535 | |
| 3536 | if (INSN_LEN == 8) |
| 3537 | illegal_instruction_combination (cpu); |
| 3538 | |
| 3539 | if (S == 1) |
| 3540 | { |
| 3541 | TRACE_BRANCH (cpu, pc, newpc, -1, "CALL"); |
| 3542 | SET_RETSREG (hwloop_get_next_pc (cpu, pc, 4)); |
| 3543 | } |
| 3544 | else |
| 3545 | TRACE_BRANCH (cpu, pc, newpc, -1, "JUMP.L"); |
| 3546 | |
| 3547 | SET_PCREG (newpc); |
| 3548 | BFIN_CPU_STATE.did_jump = true; |
| 3549 | PROFILE_BRANCH_TAKEN (cpu); |
| 3550 | CYCLE_DELAY = 5; |
| 3551 | } |
| 3552 | |
| 3553 | static void |
| 3554 | decode_LDSTidxI_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3555 | { |
| 3556 | /* LDSTidxI |
| 3557 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3558 | | 1 | 1 | 1 | 0 | 0 | 1 |.W.|.Z.|.sz....|.ptr.......|.reg.......| |
| 3559 | |.offset........................................................| |
| 3560 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3561 | int Z = ((iw0 >> (LDSTidxI_Z_bits - 16)) & LDSTidxI_Z_mask); |
| 3562 | int W = ((iw0 >> (LDSTidxI_W_bits - 16)) & LDSTidxI_W_mask); |
| 3563 | int sz = ((iw0 >> (LDSTidxI_sz_bits - 16)) & LDSTidxI_sz_mask); |
| 3564 | int reg = ((iw0 >> (LDSTidxI_reg_bits - 16)) & LDSTidxI_reg_mask); |
| 3565 | int ptr = ((iw0 >> (LDSTidxI_ptr_bits - 16)) & LDSTidxI_ptr_mask); |
| 3566 | int offset = ((iw1 >> LDSTidxI_offset_bits) & LDSTidxI_offset_mask); |
| 3567 | const char *ptr_name = get_preg_name (ptr); |
| 3568 | bu32 imm_16s4 = imm16s4 (offset); |
| 3569 | bu32 imm_16s2 = imm16s2 (offset); |
| 3570 | bu32 imm_16 = imm16 (offset); |
| 3571 | |
| 3572 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_LDSTidxI); |
| 3573 | TRACE_EXTRACT (cpu, "%s: W:%i Z:%i sz:%i ptr:%i reg:%i offset:%#x", |
| 3574 | __func__, W, Z, sz, ptr, reg, offset); |
| 3575 | |
| 3576 | if (sz == 3) |
| 3577 | illegal_instruction (cpu); |
| 3578 | |
| 3579 | if (W == 0) |
| 3580 | { |
| 3581 | if (sz == 0 && Z == 0) |
| 3582 | { |
| 3583 | TRACE_INSN (cpu, "R%i = [%s + %s];", |
| 3584 | reg, ptr_name, imm16s4_str (offset)); |
| 3585 | SET_DREG (reg, GET_LONG (PREG (ptr) + imm_16s4)); |
| 3586 | } |
| 3587 | else if (sz == 0 && Z == 1) |
| 3588 | { |
| 3589 | TRACE_INSN (cpu, "%s = [%s + %s];", |
| 3590 | get_preg_name (reg), ptr_name, imm16s4_str (offset)); |
| 3591 | SET_PREG (reg, GET_LONG (PREG (ptr) + imm_16s4)); |
| 3592 | } |
| 3593 | else if (sz == 1 && Z == 0) |
| 3594 | { |
| 3595 | TRACE_INSN (cpu, "R%i = W[%s + %s] (Z);", |
| 3596 | reg, ptr_name, imm16s2_str (offset)); |
| 3597 | SET_DREG (reg, GET_WORD (PREG (ptr) + imm_16s2)); |
| 3598 | } |
| 3599 | else if (sz == 1 && Z == 1) |
| 3600 | { |
| 3601 | TRACE_INSN (cpu, "R%i = W[%s + %s] (X);", |
| 3602 | reg, ptr_name, imm16s2_str (offset)); |
| 3603 | SET_DREG (reg, (bs32) (bs16) GET_WORD (PREG (ptr) + imm_16s2)); |
| 3604 | } |
| 3605 | else if (sz == 2 && Z == 0) |
| 3606 | { |
| 3607 | TRACE_INSN (cpu, "R%i = B[%s + %s] (Z);", |
| 3608 | reg, ptr_name, imm16_str (offset)); |
| 3609 | SET_DREG (reg, GET_BYTE (PREG (ptr) + imm_16)); |
| 3610 | } |
| 3611 | else if (sz == 2 && Z == 1) |
| 3612 | { |
| 3613 | TRACE_INSN (cpu, "R%i = B[%s + %s] (X);", |
| 3614 | reg, ptr_name, imm16_str (offset)); |
| 3615 | SET_DREG (reg, (bs32) (bs8) GET_BYTE (PREG (ptr) + imm_16)); |
| 3616 | } |
| 3617 | } |
| 3618 | else |
| 3619 | { |
| 3620 | if (sz != 0 && Z != 0) |
| 3621 | illegal_instruction (cpu); |
| 3622 | |
| 3623 | if (sz == 0 && Z == 0) |
| 3624 | { |
| 3625 | TRACE_INSN (cpu, "[%s + %s] = R%i;", ptr_name, |
| 3626 | imm16s4_str (offset), reg); |
| 3627 | PUT_LONG (PREG (ptr) + imm_16s4, DREG (reg)); |
| 3628 | } |
| 3629 | else if (sz == 0 && Z == 1) |
| 3630 | { |
| 3631 | TRACE_INSN (cpu, "[%s + %s] = %s;", |
| 3632 | ptr_name, imm16s4_str (offset), get_preg_name (reg)); |
| 3633 | PUT_LONG (PREG (ptr) + imm_16s4, PREG (reg)); |
| 3634 | } |
| 3635 | else if (sz == 1 && Z == 0) |
| 3636 | { |
| 3637 | TRACE_INSN (cpu, "W[%s + %s] = R%i;", |
| 3638 | ptr_name, imm16s2_str (offset), reg); |
| 3639 | PUT_WORD (PREG (ptr) + imm_16s2, DREG (reg)); |
| 3640 | } |
| 3641 | else if (sz == 2 && Z == 0) |
| 3642 | { |
| 3643 | TRACE_INSN (cpu, "B[%s + %s] = R%i;", |
| 3644 | ptr_name, imm16_str (offset), reg); |
| 3645 | PUT_BYTE (PREG (ptr) + imm_16, DREG (reg)); |
| 3646 | } |
| 3647 | } |
| 3648 | } |
| 3649 | |
| 3650 | static void |
| 3651 | decode_linkage_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3652 | { |
| 3653 | /* linkage |
| 3654 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3655 | | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |.R.| |
| 3656 | |.framesize.....................................................| |
| 3657 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3658 | int R = ((iw0 >> (Linkage_R_bits - 16)) & Linkage_R_mask); |
| 3659 | int framesize = ((iw1 >> Linkage_framesize_bits) & Linkage_framesize_mask); |
| 3660 | bu32 sp; |
| 3661 | |
| 3662 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_linkage); |
| 3663 | TRACE_EXTRACT (cpu, "%s: R:%i framesize:%#x", __func__, R, framesize); |
| 3664 | |
| 3665 | if (R == 0) |
| 3666 | { |
| 3667 | int size = uimm16s4 (framesize); |
| 3668 | sp = SPREG; |
| 3669 | TRACE_INSN (cpu, "LINK %s;", uimm16s4_str (framesize)); |
| 3670 | if (INSN_LEN == 8) |
| 3671 | illegal_instruction_combination (cpu); |
| 3672 | sp -= 4; |
| 3673 | PUT_LONG (sp, RETSREG); |
| 3674 | sp -= 4; |
| 3675 | PUT_LONG (sp, FPREG); |
| 3676 | SET_FPREG (sp); |
| 3677 | sp -= size; |
| 3678 | CYCLE_DELAY = 3; |
| 3679 | } |
| 3680 | else |
| 3681 | { |
| 3682 | /* Restore SP from FP. */ |
| 3683 | sp = FPREG; |
| 3684 | TRACE_INSN (cpu, "UNLINK;"); |
| 3685 | if (INSN_LEN == 8) |
| 3686 | illegal_instruction_combination (cpu); |
| 3687 | SET_FPREG (GET_LONG (sp)); |
| 3688 | sp += 4; |
| 3689 | SET_RETSREG (GET_LONG (sp)); |
| 3690 | sp += 4; |
| 3691 | CYCLE_DELAY = 2; |
| 3692 | } |
| 3693 | |
| 3694 | SET_SPREG (sp); |
| 3695 | } |
| 3696 | |
| 3697 | static void |
| 3698 | decode_dsp32mac_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3699 | { |
| 3700 | /* dsp32mac |
| 3701 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3702 | | 1 | 1 | 0 | 0 |.M.| 0 | 0 |.mmod..........|.MM|.P.|.w1|.op1...| |
| 3703 | |.h01|.h11|.w0|.op0...|.h00|.h10|.dst.......|.src0......|.src1..| |
| 3704 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3705 | int op1 = ((iw0 >> (DSP32Mac_op1_bits - 16)) & DSP32Mac_op1_mask); |
| 3706 | int w1 = ((iw0 >> (DSP32Mac_w1_bits - 16)) & DSP32Mac_w1_mask); |
| 3707 | int P = ((iw0 >> (DSP32Mac_p_bits - 16)) & DSP32Mac_p_mask); |
| 3708 | int MM = ((iw0 >> (DSP32Mac_MM_bits - 16)) & DSP32Mac_MM_mask); |
| 3709 | int mmod = ((iw0 >> (DSP32Mac_mmod_bits - 16)) & DSP32Mac_mmod_mask); |
| 3710 | int M = ((iw0 >> (DSP32Mac_M_bits - 16)) & DSP32Mac_M_mask); |
| 3711 | int w0 = ((iw1 >> DSP32Mac_w0_bits) & DSP32Mac_w0_mask); |
| 3712 | int src0 = ((iw1 >> DSP32Mac_src0_bits) & DSP32Mac_src0_mask); |
| 3713 | int src1 = ((iw1 >> DSP32Mac_src1_bits) & DSP32Mac_src1_mask); |
| 3714 | int dst = ((iw1 >> DSP32Mac_dst_bits) & DSP32Mac_dst_mask); |
| 3715 | int h10 = ((iw1 >> DSP32Mac_h10_bits) & DSP32Mac_h10_mask); |
| 3716 | int h00 = ((iw1 >> DSP32Mac_h00_bits) & DSP32Mac_h00_mask); |
| 3717 | int op0 = ((iw1 >> DSP32Mac_op0_bits) & DSP32Mac_op0_mask); |
| 3718 | int h11 = ((iw1 >> DSP32Mac_h11_bits) & DSP32Mac_h11_mask); |
| 3719 | int h01 = ((iw1 >> DSP32Mac_h01_bits) & DSP32Mac_h01_mask); |
| 3720 | |
| 3721 | bu32 res = DREG (dst); |
| 3722 | bu32 v_i = 0, zero = 0, n_1 = 0, n_0 = 0; |
| 3723 | |
| 3724 | static const char * const ops[] = { "=", "+=", "-=" }; |
| 3725 | char _buf[128], *buf = _buf; |
| 3726 | int _MM = MM; |
| 3727 | |
| 3728 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32mac); |
| 3729 | TRACE_EXTRACT (cpu, "%s: M:%i mmod:%i MM:%i P:%i w1:%i op1:%i h01:%i h11:%i " |
| 3730 | "w0:%i op0:%i h00:%i h10:%i dst:%i src0:%i src1:%i", |
| 3731 | __func__, M, mmod, MM, P, w1, op1, h01, h11, w0, op0, h00, h10, |
| 3732 | dst, src0, src1); |
| 3733 | |
| 3734 | if (w0 == 0 && w1 == 0 && op1 == 3 && op0 == 3) |
| 3735 | illegal_instruction (cpu); |
| 3736 | |
| 3737 | if ((w1 || w0) && mmod == M_W32) |
| 3738 | illegal_instruction (cpu); |
| 3739 | |
| 3740 | if (((1 << mmod) & (P ? 0x131b : 0x1b5f)) == 0) |
| 3741 | illegal_instruction (cpu); |
| 3742 | |
| 3743 | /* First handle MAC1 side. */ |
| 3744 | if (w1 == 1 || op1 != 3) |
| 3745 | { |
| 3746 | bu32 res1 = decode_macfunc (cpu, 1, op1, h01, h11, src0, |
| 3747 | src1, mmod, MM, P, &v_i, &n_1); |
| 3748 | |
| 3749 | if (w1) |
| 3750 | buf += sprintf (buf, P ? "R%i" : "R%i.H", dst + P); |
| 3751 | |
| 3752 | if (op1 == 3) |
| 3753 | { |
| 3754 | buf += sprintf (buf, " = A1"); |
| 3755 | zero = !!(res1 == 0); |
| 3756 | } |
| 3757 | else |
| 3758 | { |
| 3759 | if (w1) |
| 3760 | buf += sprintf (buf, " = ("); |
| 3761 | buf += sprintf (buf, "A1 %s R%i.%c * R%i.%c", ops[op1], |
| 3762 | src0, h01 ? 'H' : 'L', |
| 3763 | src1, h11 ? 'H' : 'L'); |
| 3764 | if (w1) |
| 3765 | buf += sprintf (buf, ")"); |
| 3766 | } |
| 3767 | |
| 3768 | if (w1) |
| 3769 | { |
| 3770 | if (P) |
| 3771 | STORE (DREG (dst + 1), res1); |
| 3772 | else |
| 3773 | { |
| 3774 | if (res1 & 0xffff0000) |
| 3775 | illegal_instruction (cpu); |
| 3776 | res = REG_H_L (res1 << 16, res); |
| 3777 | } |
| 3778 | } |
| 3779 | |
| 3780 | if (w0 == 1 || op0 != 3) |
| 3781 | { |
| 3782 | if (_MM) |
| 3783 | buf += sprintf (buf, " (M)"); |
| 3784 | _MM = 0; |
| 3785 | buf += sprintf (buf, ", "); |
| 3786 | } |
| 3787 | } |
| 3788 | |
| 3789 | /* Then handle MAC0 side. */ |
| 3790 | if (w0 == 1 || op0 != 3) |
| 3791 | { |
| 3792 | bu32 res0 = decode_macfunc (cpu, 0, op0, h00, h10, src0, |
| 3793 | src1, mmod, 0, P, &v_i, &n_0); |
| 3794 | |
| 3795 | if (w0) |
| 3796 | buf += sprintf (buf, P ? "R%i" : "R%i.L", dst); |
| 3797 | |
| 3798 | if (op0 == 3) |
| 3799 | { |
| 3800 | buf += sprintf (buf, " = A0"); |
| 3801 | zero |= !!(res0 == 0); |
| 3802 | } |
| 3803 | else |
| 3804 | { |
| 3805 | if (w0) |
| 3806 | buf += sprintf (buf, " = ("); |
| 3807 | buf += sprintf (buf, "A0 %s R%i.%c * R%i.%c", ops[op0], |
| 3808 | src0, h00 ? 'H' : 'L', |
| 3809 | src1, h10 ? 'H' : 'L'); |
| 3810 | if (w0) |
| 3811 | buf += sprintf (buf, ")"); |
| 3812 | } |
| 3813 | |
| 3814 | if (w0) |
| 3815 | { |
| 3816 | if (P) |
| 3817 | STORE (DREG (dst), res0); |
| 3818 | else |
| 3819 | { |
| 3820 | if (res0 & 0xffff0000) |
| 3821 | illegal_instruction (cpu); |
| 3822 | res = REG_H_L (res, res0); |
| 3823 | } |
| 3824 | } |
| 3825 | } |
| 3826 | |
| 3827 | TRACE_INSN (cpu, "%s%s;", _buf, mac_optmode (mmod, _MM)); |
| 3828 | |
| 3829 | if (!P && (w0 || w1)) |
| 3830 | { |
| 3831 | STORE (DREG (dst), res); |
| 3832 | SET_ASTATREG (v, v_i); |
| 3833 | if (v_i) |
| 3834 | SET_ASTATREG (vs, v_i); |
| 3835 | } |
| 3836 | else if (P) |
| 3837 | { |
| 3838 | SET_ASTATREG (v, v_i); |
| 3839 | if (v_i) |
| 3840 | SET_ASTATREG (vs, v_i); |
| 3841 | } |
| 3842 | |
| 3843 | if ((w0 == 1 && op0 == 3) || (w1 == 1 && op1 == 3)) |
| 3844 | { |
| 3845 | SET_ASTATREG (az, zero); |
| 3846 | if (!(w0 == 1 && op0 == 3)) |
| 3847 | n_0 = 0; |
| 3848 | if (!(w1 == 1 && op1 == 3)) |
| 3849 | n_1 = 0; |
| 3850 | SET_ASTATREG (an, n_1 | n_0); |
| 3851 | } |
| 3852 | } |
| 3853 | |
| 3854 | static void |
| 3855 | decode_dsp32mult_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3856 | { |
| 3857 | /* dsp32mult |
| 3858 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3859 | | 1 | 1 | 0 | 0 |.M.| 0 | 1 |.mmod..........|.MM|.P.|.w1|.op1...| |
| 3860 | |.h01|.h11|.w0|.op0...|.h00|.h10|.dst.......|.src0......|.src1..| |
| 3861 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3862 | int op1 = ((iw0 >> (DSP32Mac_op1_bits - 16)) & DSP32Mac_op1_mask); |
| 3863 | int w1 = ((iw0 >> (DSP32Mac_w1_bits - 16)) & DSP32Mac_w1_mask); |
| 3864 | int P = ((iw0 >> (DSP32Mac_p_bits - 16)) & DSP32Mac_p_mask); |
| 3865 | int MM = ((iw0 >> (DSP32Mac_MM_bits - 16)) & DSP32Mac_MM_mask); |
| 3866 | int mmod = ((iw0 >> (DSP32Mac_mmod_bits - 16)) & DSP32Mac_mmod_mask); |
| 3867 | int M = ((iw0 >> (DSP32Mac_M_bits - 16)) & DSP32Mac_M_mask); |
| 3868 | int w0 = ((iw1 >> DSP32Mac_w0_bits) & DSP32Mac_w0_mask); |
| 3869 | int src0 = ((iw1 >> DSP32Mac_src0_bits) & DSP32Mac_src0_mask); |
| 3870 | int src1 = ((iw1 >> DSP32Mac_src1_bits) & DSP32Mac_src1_mask); |
| 3871 | int dst = ((iw1 >> DSP32Mac_dst_bits) & DSP32Mac_dst_mask); |
| 3872 | int h10 = ((iw1 >> DSP32Mac_h10_bits) & DSP32Mac_h10_mask); |
| 3873 | int h00 = ((iw1 >> DSP32Mac_h00_bits) & DSP32Mac_h00_mask); |
| 3874 | int op0 = ((iw1 >> DSP32Mac_op0_bits) & DSP32Mac_op0_mask); |
| 3875 | int h11 = ((iw1 >> DSP32Mac_h11_bits) & DSP32Mac_h11_mask); |
| 3876 | int h01 = ((iw1 >> DSP32Mac_h01_bits) & DSP32Mac_h01_mask); |
| 3877 | |
| 3878 | bu32 res = DREG (dst); |
| 3879 | bu32 sat0 = 0, sat1 = 0, v_i0 = 0, v_i1 = 0; |
| 3880 | char _buf[128], *buf = _buf; |
| 3881 | int _MM = MM; |
| 3882 | |
| 3883 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32mult); |
| 3884 | TRACE_EXTRACT (cpu, "%s: M:%i mmod:%i MM:%i P:%i w1:%i op1:%i h01:%i h11:%i " |
| 3885 | "w0:%i op0:%i h00:%i h10:%i dst:%i src0:%i src1:%i", |
| 3886 | __func__, M, mmod, MM, P, w1, op1, h01, h11, w0, op0, h00, h10, |
| 3887 | dst, src0, src1); |
| 3888 | |
| 3889 | if (w1 == 0 && w0 == 0) |
| 3890 | illegal_instruction (cpu); |
| 3891 | if (((1 << mmod) & (P ? 0x313 : 0x1b57)) == 0) |
| 3892 | illegal_instruction (cpu); |
| 3893 | if (P && ((dst & 1) || (op1 != 0) || (op0 != 0) || !is_macmod_pmove (mmod))) |
| 3894 | illegal_instruction (cpu); |
| 3895 | if (!P && ((op1 != 0) || (op0 != 0) || !is_macmod_hmove (mmod))) |
| 3896 | illegal_instruction (cpu); |
| 3897 | |
| 3898 | /* First handle MAC1 side. */ |
| 3899 | if (w1) |
| 3900 | { |
| 3901 | bu64 r = decode_multfunc (cpu, h01, h11, src0, src1, mmod, MM, &sat1); |
| 3902 | bu32 res1 = extract_mult (cpu, r, mmod, MM, P, &v_i1); |
| 3903 | |
| 3904 | buf += sprintf (buf, P ? "R%i" : "R%i.H", dst + P); |
| 3905 | buf += sprintf (buf, " = R%i.%c * R%i.%c", |
| 3906 | src0, h01 ? 'H' : 'L', |
| 3907 | src1, h11 ? 'H' : 'L'); |
| 3908 | if (w0) |
| 3909 | { |
| 3910 | if (_MM) |
| 3911 | buf += sprintf (buf, " (M)"); |
| 3912 | _MM = 0; |
| 3913 | buf += sprintf (buf, ", "); |
| 3914 | } |
| 3915 | |
| 3916 | if (P) |
| 3917 | STORE (DREG (dst + 1), res1); |
| 3918 | else |
| 3919 | { |
| 3920 | if (res1 & 0xFFFF0000) |
| 3921 | illegal_instruction (cpu); |
| 3922 | res = REG_H_L (res1 << 16, res); |
| 3923 | } |
| 3924 | } |
| 3925 | |
| 3926 | /* First handle MAC0 side. */ |
| 3927 | if (w0) |
| 3928 | { |
| 3929 | bu64 r = decode_multfunc (cpu, h00, h10, src0, src1, mmod, 0, &sat0); |
| 3930 | bu32 res0 = extract_mult (cpu, r, mmod, 0, P, &v_i0); |
| 3931 | |
| 3932 | buf += sprintf (buf, P ? "R%i" : "R%i.L", dst); |
| 3933 | buf += sprintf (buf, " = R%i.%c * R%i.%c", |
| 3934 | src0, h01 ? 'H' : 'L', |
| 3935 | src1, h11 ? 'H' : 'L'); |
| 3936 | |
| 3937 | if (P) |
| 3938 | STORE (DREG (dst), res0); |
| 3939 | else |
| 3940 | { |
| 3941 | if (res0 & 0xFFFF0000) |
| 3942 | illegal_instruction (cpu); |
| 3943 | res = REG_H_L (res, res0); |
| 3944 | } |
| 3945 | } |
| 3946 | |
| 3947 | TRACE_INSN (cpu, "%s%s;", _buf, mac_optmode (mmod, _MM)); |
| 3948 | |
| 3949 | if (!P && (w0 || w1)) |
| 3950 | STORE (DREG (dst), res); |
| 3951 | |
| 3952 | if (w0 || w1) |
| 3953 | { |
| 3954 | bu32 v = sat0 | sat1 | v_i0 | v_i1; |
| 3955 | |
| 3956 | STORE (ASTATREG (v), v); |
| 3957 | STORE (ASTATREG (v_copy), v); |
| 3958 | if (v) |
| 3959 | STORE (ASTATREG (vs), v); |
| 3960 | } |
| 3961 | } |
| 3962 | |
| 3963 | static void |
| 3964 | decode_dsp32alu_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 3965 | { |
| 3966 | /* dsp32alu |
| 3967 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 3968 | | 1 | 1 | 0 | 0 |.M.| 1 | 0 | - | - | - |.HL|.aopcde............| |
| 3969 | |.aop...|.s.|.x.|.dst0......|.dst1......|.src0......|.src1......| |
| 3970 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 3971 | int s = ((iw1 >> DSP32Alu_s_bits) & DSP32Alu_s_mask); |
| 3972 | int x = ((iw1 >> DSP32Alu_x_bits) & DSP32Alu_x_mask); |
| 3973 | int aop = ((iw1 >> DSP32Alu_aop_bits) & DSP32Alu_aop_mask); |
| 3974 | int src0 = ((iw1 >> DSP32Alu_src0_bits) & DSP32Alu_src0_mask); |
| 3975 | int src1 = ((iw1 >> DSP32Alu_src1_bits) & DSP32Alu_src1_mask); |
| 3976 | int dst0 = ((iw1 >> DSP32Alu_dst0_bits) & DSP32Alu_dst0_mask); |
| 3977 | int dst1 = ((iw1 >> DSP32Alu_dst1_bits) & DSP32Alu_dst1_mask); |
| 3978 | int M = ((iw0 >> (DSP32Alu_M_bits - 16)) & DSP32Alu_M_mask); |
| 3979 | int HL = ((iw0 >> (DSP32Alu_HL_bits - 16)) & DSP32Alu_HL_mask); |
| 3980 | int aopcde = ((iw0 >> (DSP32Alu_aopcde_bits - 16)) & DSP32Alu_aopcde_mask); |
| 3981 | |
| 3982 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32alu); |
| 3983 | TRACE_EXTRACT (cpu, "%s: M:%i HL:%i aopcde:%i aop:%i s:%i x:%i dst0:%i " |
| 3984 | "dst1:%i src0:%i src1:%i", |
| 3985 | __func__, M, HL, aopcde, aop, s, x, dst0, dst1, src0, src1); |
| 3986 | |
| 3987 | if ((aop == 0 || aop == 2) && aopcde == 9 && HL == 0 && s == 0) |
| 3988 | { |
| 3989 | int a = aop >> 1; |
| 3990 | TRACE_INSN (cpu, "A%i.L = R%i.L;", a, src0); |
| 3991 | SET_AWREG (a, REG_H_L (AWREG (a), DREG (src0))); |
| 3992 | } |
| 3993 | else if ((aop == 0 || aop == 2) && aopcde == 9 && HL == 1 && s == 0) |
| 3994 | { |
| 3995 | int a = aop >> 1; |
| 3996 | TRACE_INSN (cpu, "A%i.H = R%i.H;", a, src0); |
| 3997 | SET_AWREG (a, REG_H_L (DREG (src0), AWREG (a))); |
| 3998 | } |
| 3999 | else if ((aop == 1 || aop == 0) && aopcde == 5) |
| 4000 | { |
| 4001 | bs32 val0 = DREG (src0); |
| 4002 | bs32 val1 = DREG (src1); |
| 4003 | bs32 res; |
| 4004 | bs32 signRes; |
| 4005 | bs32 ovX, sBit1, sBit2, sBitRes1, sBitRes2; |
| 4006 | |
| 4007 | TRACE_INSN (cpu, "R%i.%s = R%i %s R%i (RND12)", dst0, HL ? "L" : "H", |
| 4008 | src0, aop & 0x1 ? "-" : "+", src1); |
| 4009 | |
| 4010 | /* If subtract, just invert and add one. */ |
| 4011 | if (aop & 0x1) |
| 4012 | val1 = ~val1 + 1; |
| 4013 | |
| 4014 | /* Get the sign bits, since we need them later. */ |
| 4015 | sBit1 = !!(val0 & 0x80000000); |
| 4016 | sBit2 = !!(val1 & 0x80000000); |
| 4017 | |
| 4018 | res = val0 + val1; |
| 4019 | |
| 4020 | sBitRes1 = !!(res & 0x80000000); |
| 4021 | /* Round to the 12th bit. */ |
| 4022 | res += 0x0800; |
| 4023 | sBitRes2 = !!(res & 0x80000000); |
| 4024 | |
| 4025 | signRes = res; |
| 4026 | signRes >>= 27; |
| 4027 | |
| 4028 | /* Overflow if |
| 4029 | pos + pos = neg |
| 4030 | neg + neg = pos |
| 4031 | positive_res + positive_round = neg |
| 4032 | Shift and upper 4 bits where not the same. */ |
| 4033 | if ((!(sBit1 ^ sBit2) && (sBit1 ^ sBitRes1)) |
| 4034 | || (!sBit1 && !sBit2 && sBitRes2) |
| 4035 | || ((signRes != 0) && (signRes != -1))) |
| 4036 | { |
| 4037 | /* Both X1 and X2 Neg res is neg overflow. */ |
| 4038 | if (sBit1 && sBit2) |
| 4039 | res = 0x80000000; |
| 4040 | /* Both X1 and X2 Pos res is pos overflow. */ |
| 4041 | else if (!sBit1 && !sBit2) |
| 4042 | res = 0x7FFFFFFF; |
| 4043 | /* Pos+Neg or Neg+Pos take the sign of the result. */ |
| 4044 | else if (sBitRes1) |
| 4045 | res = 0x80000000; |
| 4046 | else |
| 4047 | res = 0x7FFFFFFF; |
| 4048 | |
| 4049 | ovX = 1; |
| 4050 | } |
| 4051 | else |
| 4052 | { |
| 4053 | /* Shift up now after overflow detection. */ |
| 4054 | ovX = 0; |
| 4055 | res <<= 4; |
| 4056 | } |
| 4057 | |
| 4058 | res >>= 16; |
| 4059 | |
| 4060 | if (HL) |
| 4061 | STORE (DREG (dst0), REG_H_L (res << 16, DREG (dst0))); |
| 4062 | else |
| 4063 | STORE (DREG (dst0), REG_H_L (DREG (dst0), res)); |
| 4064 | |
| 4065 | SET_ASTATREG (az, res == 0); |
| 4066 | SET_ASTATREG (an, res & 0x8000); |
| 4067 | SET_ASTATREG (v, ovX); |
| 4068 | if (ovX) |
| 4069 | SET_ASTATREG (vs, ovX); |
| 4070 | } |
| 4071 | else if ((aop == 2 || aop == 3) && aopcde == 5) |
| 4072 | { |
| 4073 | bs32 val0 = DREG (src0); |
| 4074 | bs32 val1 = DREG (src1); |
| 4075 | bs32 res; |
| 4076 | |
| 4077 | TRACE_INSN (cpu, "R%i.%s = R%i %s R%i (RND20)", dst0, HL ? "L" : "H", |
| 4078 | src0, aop & 0x1 ? "-" : "+", src1); |
| 4079 | |
| 4080 | /* If subtract, just invert and add one. */ |
| 4081 | if (aop & 0x1) |
| 4082 | val1 = ~val1 + 1; |
| 4083 | |
| 4084 | res = (val0 >> 4) + (val1 >> 4) + (((val0 & 0xf) + (val1 & 0xf)) >> 4); |
| 4085 | res += 0x8000; |
| 4086 | /* Don't sign extend during the shift. */ |
| 4087 | res = ((bu32)res >> 16); |
| 4088 | |
| 4089 | /* Don't worry about overflows, since we are shifting right. */ |
| 4090 | |
| 4091 | if (HL) |
| 4092 | STORE (DREG (dst0), REG_H_L (res << 16, DREG (dst0))); |
| 4093 | else |
| 4094 | STORE (DREG (dst0), REG_H_L (DREG (dst0), res)); |
| 4095 | |
| 4096 | SET_ASTATREG (az, res == 0); |
| 4097 | SET_ASTATREG (an, res & 0x8000); |
| 4098 | SET_ASTATREG (v, 0); |
| 4099 | } |
| 4100 | else if (aopcde == 2 || aopcde == 3) |
| 4101 | { |
| 4102 | bu32 s1, s2, val, ac0_i = 0, v_i = 0; |
| 4103 | |
| 4104 | TRACE_INSN (cpu, "R%i.%c = R%i.%c %c R%i.%c%s;", |
| 4105 | dst0, HL ? 'H' : 'L', |
| 4106 | src0, aop & 2 ? 'H' : 'L', |
| 4107 | aopcde == 2 ? '+' : '-', |
| 4108 | src1, aop & 1 ? 'H' : 'L', |
| 4109 | amod1 (s, x)); |
| 4110 | |
| 4111 | s1 = DREG (src0); |
| 4112 | s2 = DREG (src1); |
| 4113 | if (aop & 1) |
| 4114 | s2 >>= 16; |
| 4115 | if (aop & 2) |
| 4116 | s1 >>= 16; |
| 4117 | |
| 4118 | if (aopcde == 2) |
| 4119 | val = add16 (cpu, s1, s2, &ac0_i, &v_i, 0, 0, s, 0); |
| 4120 | else |
| 4121 | val = sub16 (cpu, s1, s2, &ac0_i, &v_i, 0, 0, s, 0); |
| 4122 | |
| 4123 | SET_ASTATREG (ac0, ac0_i); |
| 4124 | SET_ASTATREG (v, v_i); |
| 4125 | if (v_i) |
| 4126 | SET_ASTATREG (vs, v_i); |
| 4127 | |
| 4128 | if (HL) |
| 4129 | SET_DREG_H (dst0, val << 16); |
| 4130 | else |
| 4131 | SET_DREG_L (dst0, val); |
| 4132 | |
| 4133 | SET_ASTATREG (an, val & 0x8000); |
| 4134 | SET_ASTATREG (az, val == 0); |
| 4135 | } |
| 4136 | else if ((aop == 0 || aop == 2) && aopcde == 9 && s == 1) |
| 4137 | { |
| 4138 | int a = aop >> 1; |
| 4139 | TRACE_INSN (cpu, "A%i = R%i;", a, src0); |
| 4140 | SET_AREG32 (a, DREG (src0)); |
| 4141 | } |
| 4142 | else if ((aop == 1 || aop == 3) && aopcde == 9 && s == 0) |
| 4143 | { |
| 4144 | int a = aop >> 1; |
| 4145 | TRACE_INSN (cpu, "A%i.X = R%i.L;", a, src0); |
| 4146 | SET_AXREG (a, (bs8)DREG (src0)); |
| 4147 | } |
| 4148 | else if (aop == 3 && aopcde == 11 && (s == 0 || s == 1)) |
| 4149 | { |
| 4150 | bu64 acc0 = get_extended_acc (cpu, 0); |
| 4151 | bu64 acc1 = get_extended_acc (cpu, 1); |
| 4152 | bu32 carry = (bu40)acc1 < (bu40)acc0; |
| 4153 | bu32 sat = 0; |
| 4154 | |
| 4155 | TRACE_INSN (cpu, "A0 -= A1%s;", s ? " (W32)" : ""); |
| 4156 | |
| 4157 | acc0 -= acc1; |
| 4158 | if ((bs64)acc0 < -0x8000000000ll) |
| 4159 | acc0 = -0x8000000000ull, sat = 1; |
| 4160 | else if ((bs64)acc0 >= 0x7fffffffffll) |
| 4161 | acc0 = 0x7fffffffffull, sat = 1; |
| 4162 | |
| 4163 | if (s == 1) |
| 4164 | { |
| 4165 | /* A0 -= A1 (W32) */ |
| 4166 | if (acc0 & (bu64)0x8000000000ll) |
| 4167 | acc0 &= 0x80ffffffffll, sat = 1; |
| 4168 | else |
| 4169 | acc0 &= 0xffffffffll; |
| 4170 | } |
| 4171 | STORE (AXREG (0), (acc0 >> 32) & 0xff); |
| 4172 | STORE (AWREG (0), acc0 & 0xffffffff); |
| 4173 | STORE (ASTATREG (az), acc0 == 0); |
| 4174 | STORE (ASTATREG (an), !!(acc0 & (bu64)0x8000000000ll)); |
| 4175 | STORE (ASTATREG (ac0), carry); |
| 4176 | STORE (ASTATREG (ac0_copy), carry); |
| 4177 | STORE (ASTATREG (av0), sat); |
| 4178 | if (sat) |
| 4179 | STORE (ASTATREG (av0s), sat); |
| 4180 | } |
| 4181 | else if ((aop == 0 || aop == 1) && aopcde == 22) |
| 4182 | { |
| 4183 | bu32 s0, s0L, s0H, s1, s1L, s1H; |
| 4184 | bu32 tmp0, tmp1, i; |
| 4185 | const char * const opts[] = { "rndl", "rndh", "tl", "th" }; |
| 4186 | |
| 4187 | TRACE_INSN (cpu, "R%i = BYTEOP2P (R%i:%i, R%i:%i) (%s%s);", dst0, |
| 4188 | src0 + 1, src0, src1 + 1, src1, opts[HL + (aop << 1)], |
| 4189 | s ? ", r" : ""); |
| 4190 | |
| 4191 | s0L = DREG (src0); |
| 4192 | s0H = DREG (src0 + 1); |
| 4193 | s1L = DREG (src1); |
| 4194 | s1H = DREG (src1 + 1); |
| 4195 | if (s) |
| 4196 | { |
| 4197 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4198 | s1 = algn (s1H, s1L, IREG (0) & 3); |
| 4199 | } |
| 4200 | else |
| 4201 | { |
| 4202 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4203 | s1 = algn (s1L, s1H, IREG (0) & 3); |
| 4204 | } |
| 4205 | |
| 4206 | i = !aop * 2; |
| 4207 | tmp0 = ((((s1 >> 8) & 0xff) + ((s1 >> 0) & 0xff) + |
| 4208 | ((s0 >> 8) & 0xff) + ((s0 >> 0) & 0xff) + i) >> 2) & 0xff; |
| 4209 | tmp1 = ((((s1 >> 24) & 0xff) + ((s1 >> 16) & 0xff) + |
| 4210 | ((s0 >> 24) & 0xff) + ((s0 >> 16) & 0xff) + i) >> 2) & 0xff; |
| 4211 | SET_DREG (dst0, (tmp1 << (16 + (HL * 8))) | (tmp0 << (HL * 8))); |
| 4212 | } |
| 4213 | else if ((aop == 0 || aop == 1) && s == 0 && aopcde == 8) |
| 4214 | { |
| 4215 | TRACE_INSN (cpu, "A%i = 0;", aop); |
| 4216 | SET_AREG (aop, 0); |
| 4217 | } |
| 4218 | else if (aop == 2 && s == 0 && aopcde == 8) |
| 4219 | { |
| 4220 | TRACE_INSN (cpu, "A1 = A0 = 0;"); |
| 4221 | SET_AREG (0, 0); |
| 4222 | SET_AREG (1, 0); |
| 4223 | } |
| 4224 | else if ((aop == 0 || aop == 1 || aop == 2) && s == 1 && aopcde == 8) |
| 4225 | { |
| 4226 | bs40 acc0 = get_extended_acc (cpu, 0); |
| 4227 | bs40 acc1 = get_extended_acc (cpu, 1); |
| 4228 | bu32 sat; |
| 4229 | |
| 4230 | if (aop == 0 || aop == 1) |
| 4231 | TRACE_INSN (cpu, "A%i = A%i (S);", aop, aop); |
| 4232 | else |
| 4233 | TRACE_INSN (cpu, "A1 = A1 (S), A0 = A0 (S);"); |
| 4234 | |
| 4235 | if (aop == 0 || aop == 2) |
| 4236 | { |
| 4237 | sat = 0; |
| 4238 | acc0 = saturate_s32 (acc0, &sat); |
| 4239 | acc0 |= -(acc0 & 0x80000000ull); |
| 4240 | SET_AXREG (0, (acc0 >> 31) & 0xFF); |
| 4241 | SET_AWREG (0, acc0 & 0xFFFFFFFF); |
| 4242 | SET_ASTATREG (av0, sat); |
| 4243 | if (sat) |
| 4244 | SET_ASTATREG (av0s, sat); |
| 4245 | } |
| 4246 | else |
| 4247 | acc0 = 1; |
| 4248 | |
| 4249 | if (aop == 1 || aop == 2) |
| 4250 | { |
| 4251 | sat = 0; |
| 4252 | acc1 = saturate_s32 (acc1, &sat); |
| 4253 | acc1 |= -(acc1 & 0x80000000ull); |
| 4254 | SET_AXREG (1, (acc1 >> 31) & 0xFF); |
| 4255 | SET_AWREG (1, acc1 & 0xFFFFFFFF); |
| 4256 | SET_ASTATREG (av1, sat); |
| 4257 | if (sat) |
| 4258 | SET_ASTATREG (av1s, sat); |
| 4259 | } |
| 4260 | else |
| 4261 | acc1 = 1; |
| 4262 | |
| 4263 | SET_ASTATREG (az, (acc0 == 0) || (acc1 == 0)); |
| 4264 | SET_ASTATREG (an, ((acc0 >> 31) & 1) || ((acc1 >> 31) & 1)); |
| 4265 | } |
| 4266 | else if (aop == 3 && (s == 0 || s == 1) && aopcde == 8) |
| 4267 | { |
| 4268 | TRACE_INSN (cpu, "A%i = A%i;", s, !s); |
| 4269 | SET_AXREG (s, AXREG (!s)); |
| 4270 | SET_AWREG (s, AWREG (!s)); |
| 4271 | } |
| 4272 | else if (aop == 3 && HL == 0 && aopcde == 16) |
| 4273 | { |
| 4274 | int i; |
| 4275 | bu32 az; |
| 4276 | |
| 4277 | TRACE_INSN (cpu, "A1 = ABS A1 , A0 = ABS A0;"); |
| 4278 | |
| 4279 | az = 0; |
| 4280 | for (i = 0; i < 2; ++i) |
| 4281 | { |
| 4282 | bu32 av; |
| 4283 | bs40 acc = get_extended_acc (cpu, i); |
| 4284 | |
| 4285 | if (acc >> 39) |
| 4286 | acc = -acc; |
| 4287 | av = acc == ((bs40)1 << 39); |
| 4288 | if (av) |
| 4289 | acc = ((bs40)1 << 39) - 1; |
| 4290 | |
| 4291 | SET_AREG (i, acc); |
| 4292 | SET_ASTATREG (av[i], av); |
| 4293 | if (av) |
| 4294 | SET_ASTATREG (avs[i], av); |
| 4295 | az |= (acc == 0); |
| 4296 | } |
| 4297 | SET_ASTATREG (az, az); |
| 4298 | SET_ASTATREG (an, 0); |
| 4299 | } |
| 4300 | else if (aop == 0 && aopcde == 23) |
| 4301 | { |
| 4302 | bu32 s0, s0L, s0H, s1, s1L, s1H; |
| 4303 | bs32 tmp0, tmp1; |
| 4304 | |
| 4305 | TRACE_INSN (cpu, "R%i = BYTEOP3P (R%i:%i, R%i:%i) (%s%s);", dst0, |
| 4306 | src0 + 1, src0, src1 + 1, src1, HL ? "HI" : "LO", |
| 4307 | s ? ", R" : ""); |
| 4308 | |
| 4309 | s0L = DREG (src0); |
| 4310 | s0H = DREG (src0 + 1); |
| 4311 | s1L = DREG (src1); |
| 4312 | s1H = DREG (src1 + 1); |
| 4313 | if (s) |
| 4314 | { |
| 4315 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4316 | s1 = algn (s1H, s1L, IREG (1) & 3); |
| 4317 | } |
| 4318 | else |
| 4319 | { |
| 4320 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4321 | s1 = algn (s1L, s1H, IREG (1) & 3); |
| 4322 | } |
| 4323 | |
| 4324 | tmp0 = (bs32)(bs16)(s0 >> 0) + ((s1 >> ( 0 + (8 * !HL))) & 0xff); |
| 4325 | tmp1 = (bs32)(bs16)(s0 >> 16) + ((s1 >> (16 + (8 * !HL))) & 0xff); |
| 4326 | SET_DREG (dst0, (CLAMP (tmp0, 0, 255) << ( 0 + (8 * HL))) | |
| 4327 | (CLAMP (tmp1, 0, 255) << (16 + (8 * HL)))); |
| 4328 | } |
| 4329 | else if ((aop == 0 || aop == 1) && aopcde == 16) |
| 4330 | { |
| 4331 | bu32 av; |
| 4332 | bs40 acc; |
| 4333 | |
| 4334 | TRACE_INSN (cpu, "A%i = ABS A%i;", HL, aop); |
| 4335 | |
| 4336 | acc = get_extended_acc (cpu, aop); |
| 4337 | if (acc >> 39) |
| 4338 | acc = -acc; |
| 4339 | av = acc == ((bs40)1 << 39); |
| 4340 | if (av) |
| 4341 | acc = ((bs40)1 << 39) - 1; |
| 4342 | SET_AREG (HL, acc); |
| 4343 | |
| 4344 | SET_ASTATREG (av[HL], av); |
| 4345 | if (av) |
| 4346 | SET_ASTATREG (avs[HL], av); |
| 4347 | SET_ASTATREG (az, acc == 0); |
| 4348 | SET_ASTATREG (an, 0); |
| 4349 | } |
| 4350 | else if (aop == 3 && aopcde == 12) |
| 4351 | { |
| 4352 | bs32 res = DREG (src0); |
| 4353 | bs32 ovX; |
| 4354 | bool sBit_a, sBit_b; |
| 4355 | |
| 4356 | TRACE_INSN (cpu, "R%i.%s = R%i (RND);", dst0, HL == 0 ? "L" : "H", src0); |
| 4357 | TRACE_DECODE (cpu, "R%i.%s = R%i:%#x (RND);", dst0, |
| 4358 | HL == 0 ? "L" : "H", src0, res); |
| 4359 | |
| 4360 | sBit_b = !!(res & 0x80000000); |
| 4361 | |
| 4362 | res += 0x8000; |
| 4363 | sBit_a = !!(res & 0x80000000); |
| 4364 | |
| 4365 | /* Overflow if the sign bit changed when we rounded. */ |
| 4366 | if ((res >> 16) && (sBit_b != sBit_a)) |
| 4367 | { |
| 4368 | ovX = 1; |
| 4369 | if (!sBit_b) |
| 4370 | res = 0x7FFF; |
| 4371 | else |
| 4372 | res = 0x8000; |
| 4373 | } |
| 4374 | else |
| 4375 | { |
| 4376 | res = res >> 16; |
| 4377 | ovX = 0; |
| 4378 | } |
| 4379 | |
| 4380 | if (!HL) |
| 4381 | SET_DREG (dst0, REG_H_L (DREG (dst0), res)); |
| 4382 | else |
| 4383 | SET_DREG (dst0, REG_H_L (res << 16, DREG (dst0))); |
| 4384 | |
| 4385 | SET_ASTATREG (az, res == 0); |
| 4386 | SET_ASTATREG (an, res < 0); |
| 4387 | SET_ASTATREG (v, ovX); |
| 4388 | if (ovX) |
| 4389 | SET_ASTATREG (vs, ovX); |
| 4390 | } |
| 4391 | else if (aop == 3 && HL == 0 && aopcde == 15) |
| 4392 | { |
| 4393 | bu32 hi = (-(bs16)(DREG (src0) >> 16)) << 16; |
| 4394 | bu32 lo = (-(bs16)(DREG (src0) & 0xFFFF)) & 0xFFFF; |
| 4395 | int v, ac0, ac1; |
| 4396 | |
| 4397 | TRACE_INSN (cpu, "R%i = -R%i (V);", dst0, src0); |
| 4398 | |
| 4399 | v = ac0 = ac1 = 0; |
| 4400 | |
| 4401 | if (hi == 0x80000000) |
| 4402 | { |
| 4403 | hi = 0x7fff0000; |
| 4404 | v = 1; |
| 4405 | } |
| 4406 | else if (hi == 0) |
| 4407 | ac1 = 1; |
| 4408 | |
| 4409 | if (lo == 0x8000) |
| 4410 | { |
| 4411 | lo = 0x7fff; |
| 4412 | v = 1; |
| 4413 | } |
| 4414 | else if (lo == 0) |
| 4415 | ac0 = 1; |
| 4416 | |
| 4417 | SET_DREG (dst0, hi | lo); |
| 4418 | |
| 4419 | SET_ASTATREG (v, v); |
| 4420 | if (v) |
| 4421 | SET_ASTATREG (vs, 1); |
| 4422 | SET_ASTATREG (ac0, ac0); |
| 4423 | SET_ASTATREG (ac1, ac1); |
| 4424 | setflags_nz_2x16 (cpu, DREG (dst0)); |
| 4425 | } |
| 4426 | else if (aop == 3 && HL == 0 && aopcde == 14) |
| 4427 | { |
| 4428 | TRACE_INSN (cpu, "A1 = - A1 , A0 = - A0;"); |
| 4429 | |
| 4430 | SET_AREG (0, saturate_s40 (-get_extended_acc (cpu, 0))); |
| 4431 | SET_AREG (1, saturate_s40 (-get_extended_acc (cpu, 1))); |
| 4432 | /* XXX: what ASTAT flags need updating ? */ |
| 4433 | } |
| 4434 | else if ((aop == 0 || aop == 1) && (HL == 0 || HL == 1) && aopcde == 14) |
| 4435 | { |
| 4436 | bs40 src_acc = get_extended_acc (cpu, aop); |
| 4437 | int v = 0; |
| 4438 | |
| 4439 | TRACE_INSN (cpu, "A%i = - A%i;", HL, aop); |
| 4440 | |
| 4441 | SET_AREG (HL, saturate_s40_astat (-src_acc, &v)); |
| 4442 | |
| 4443 | SET_ASTATREG (az, AWREG (HL) == 0 && AXREG (HL) == 0); |
| 4444 | SET_ASTATREG (an, AXREG (HL) >> 7); |
| 4445 | if (HL == 0) |
| 4446 | { |
| 4447 | SET_ASTATREG (ac0, !src_acc); |
| 4448 | SET_ASTATREG (av0, v); |
| 4449 | if (v) |
| 4450 | SET_ASTATREG (av0s, 1); |
| 4451 | } |
| 4452 | else |
| 4453 | { |
| 4454 | SET_ASTATREG (ac1, !src_acc); |
| 4455 | SET_ASTATREG (av1, v); |
| 4456 | if (v) |
| 4457 | SET_ASTATREG (av1s, 1); |
| 4458 | } |
| 4459 | } |
| 4460 | else if (aop == 0 && aopcde == 12) |
| 4461 | { |
| 4462 | bs16 tmp0_hi = DREG (src0) >> 16; |
| 4463 | bs16 tmp0_lo = DREG (src0); |
| 4464 | bs16 tmp1_hi = DREG (src1) >> 16; |
| 4465 | bs16 tmp1_lo = DREG (src1); |
| 4466 | |
| 4467 | TRACE_INSN (cpu, "R%i.L = R%i.H = SIGN(R%i.H) * R%i.H + SIGN(R%i.L) * R%i.L;", |
| 4468 | dst0, dst0, src0, src1, src0, src1); |
| 4469 | |
| 4470 | if ((tmp0_hi >> 15) & 1) |
| 4471 | tmp1_hi = ~tmp1_hi + 1; |
| 4472 | |
| 4473 | if ((tmp0_lo >> 15) & 1) |
| 4474 | tmp1_lo = ~tmp1_lo + 1; |
| 4475 | |
| 4476 | tmp1_hi = tmp1_hi + tmp1_lo; |
| 4477 | |
| 4478 | STORE (DREG (dst0), REG_H_L (tmp1_hi << 16, tmp1_hi)); |
| 4479 | } |
| 4480 | else if (aopcde == 0) |
| 4481 | { |
| 4482 | bu32 s0 = DREG (src0); |
| 4483 | bu32 s1 = DREG (src1); |
| 4484 | bu32 s0h = s0 >> 16; |
| 4485 | bu32 s0l = s0 & 0xFFFF; |
| 4486 | bu32 s1h = s1 >> 16; |
| 4487 | bu32 s1l = s1 & 0xFFFF; |
| 4488 | bu32 t0, t1; |
| 4489 | bu32 ac1_i = 0, ac0_i = 0, v_i = 0, z_i = 0, n_i = 0; |
| 4490 | |
| 4491 | TRACE_INSN (cpu, "R%i = R%i %c|%c R%i%s;", dst0, src0, |
| 4492 | (aop & 2) ? '-' : '+', (aop & 1) ? '-' : '+', src1, |
| 4493 | amod0 (s, x)); |
| 4494 | if (aop & 2) |
| 4495 | t0 = sub16 (cpu, s0h, s1h, &ac1_i, &v_i, &z_i, &n_i, s, 0); |
| 4496 | else |
| 4497 | t0 = add16 (cpu, s0h, s1h, &ac1_i, &v_i, &z_i, &n_i, s, 0); |
| 4498 | |
| 4499 | if (aop & 1) |
| 4500 | t1 = sub16 (cpu, s0l, s1l, &ac0_i, &v_i, &z_i, &n_i, s, 0); |
| 4501 | else |
| 4502 | t1 = add16 (cpu, s0l, s1l, &ac0_i, &v_i, &z_i, &n_i, s, 0); |
| 4503 | |
| 4504 | SET_ASTATREG (ac1, ac1_i); |
| 4505 | SET_ASTATREG (ac0, ac0_i); |
| 4506 | SET_ASTATREG (az, z_i); |
| 4507 | SET_ASTATREG (an, n_i); |
| 4508 | SET_ASTATREG (v, v_i); |
| 4509 | if (v_i) |
| 4510 | SET_ASTATREG (vs, v_i); |
| 4511 | |
| 4512 | t0 &= 0xFFFF; |
| 4513 | t1 &= 0xFFFF; |
| 4514 | if (x) |
| 4515 | SET_DREG (dst0, (t1 << 16) | t0); |
| 4516 | else |
| 4517 | SET_DREG (dst0, (t0 << 16) | t1); |
| 4518 | } |
| 4519 | else if (aop == 1 && aopcde == 12) |
| 4520 | { |
| 4521 | bu32 val0 = ((AWREG (0) >> 16) + (AWREG (0) & 0xFFFF)) & 0xFFFF; |
| 4522 | bu32 val1 = ((AWREG (1) >> 16) + (AWREG (1) & 0xFFFF)) & 0xFFFF; |
| 4523 | |
| 4524 | TRACE_INSN (cpu, "R%i = A1.L + A1.H, R%i = A0.L + A0.H;", dst1, dst0); |
| 4525 | |
| 4526 | if (dst0 == dst1) |
| 4527 | illegal_instruction_combination (cpu); |
| 4528 | |
| 4529 | if (val0 & 0x8000) |
| 4530 | val0 |= 0xFFFF0000; |
| 4531 | |
| 4532 | if (val1 & 0x8000) |
| 4533 | val1 |= 0xFFFF0000; |
| 4534 | |
| 4535 | SET_DREG (dst0, val0); |
| 4536 | SET_DREG (dst1, val1); |
| 4537 | /* XXX: ASTAT ? */ |
| 4538 | } |
| 4539 | else if (aopcde == 1) |
| 4540 | { |
| 4541 | bu32 d0, d1; |
| 4542 | bu32 x0, x1; |
| 4543 | bu16 s0L = DREG (src0); |
| 4544 | bu16 s0H = DREG (src0) >> 16; |
| 4545 | bu16 s1L = DREG (src1); |
| 4546 | bu16 s1H = DREG (src1) >> 16; |
| 4547 | bu32 v_i = 0, n_i = 0, z_i = 0; |
| 4548 | |
| 4549 | TRACE_INSN (cpu, "R%i = R%i %s R%i, R%i = R%i %s R%i%s;", |
| 4550 | dst1, src0, HL ? "+|-" : "+|+", src1, |
| 4551 | dst0, src0, HL ? "-|+" : "-|-", src1, |
| 4552 | amod0amod2 (s, x, aop)); |
| 4553 | |
| 4554 | if (dst0 == dst1) |
| 4555 | illegal_instruction_combination (cpu); |
| 4556 | |
| 4557 | if (HL == 0) |
| 4558 | { |
| 4559 | x0 = add16 (cpu, s0H, s1H, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4560 | x1 = add16 (cpu, s0L, s1L, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4561 | d1 = (x0 << 16) | x1; |
| 4562 | |
| 4563 | x0 = sub16 (cpu, s0H, s1H, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4564 | x1 = sub16 (cpu, s0L, s1L, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4565 | if (x == 0) |
| 4566 | d0 = (x0 << 16) | x1; |
| 4567 | else |
| 4568 | d0 = (x1 << 16) | x0; |
| 4569 | } |
| 4570 | else |
| 4571 | { |
| 4572 | x0 = add16 (cpu, s0H, s1H, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4573 | x1 = sub16 (cpu, s0L, s1L, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4574 | d1 = (x0 << 16) | x1; |
| 4575 | |
| 4576 | x0 = sub16 (cpu, s0H, s1H, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4577 | x1 = add16 (cpu, s0L, s1L, 0, &v_i, &z_i, &n_i, s, aop) & 0xffff; |
| 4578 | if (x == 0) |
| 4579 | d0 = (x0 << 16) | x1; |
| 4580 | else |
| 4581 | d0 = (x1 << 16) | x0; |
| 4582 | } |
| 4583 | SET_ASTATREG (az, z_i); |
| 4584 | SET_ASTATREG (an, n_i); |
| 4585 | SET_ASTATREG (v, v_i); |
| 4586 | if (v_i) |
| 4587 | SET_ASTATREG (vs, v_i); |
| 4588 | |
| 4589 | STORE (DREG (dst0), d0); |
| 4590 | STORE (DREG (dst1), d1); |
| 4591 | } |
| 4592 | else if ((aop == 0 || aop == 1 || aop == 2) && aopcde == 11) |
| 4593 | { |
| 4594 | bs40 acc0 = get_extended_acc (cpu, 0); |
| 4595 | bs40 acc1 = get_extended_acc (cpu, 1); |
| 4596 | bu32 v, dreg, sat = 0; |
| 4597 | bu32 carry = !!((bu40)~acc1 < (bu40)acc0); |
| 4598 | |
| 4599 | if (aop == 0) |
| 4600 | TRACE_INSN (cpu, "R%i = (A0 += A1);", dst0); |
| 4601 | else if (aop == 1) |
| 4602 | TRACE_INSN (cpu, "R%i.%c = (A0 += A1);", dst0, HL ? 'H' : 'L'); |
| 4603 | else |
| 4604 | TRACE_INSN (cpu, "A0 += A1%s;", s ? " (W32)" : ""); |
| 4605 | |
| 4606 | acc0 += acc1; |
| 4607 | acc0 = saturate_s40_astat (acc0, &v); |
| 4608 | |
| 4609 | if (aop == 2 && s == 1) /* A0 += A1 (W32) */ |
| 4610 | { |
| 4611 | if (acc0 & (bs40)0x8000000000ll) |
| 4612 | acc0 &= 0x80ffffffffll; |
| 4613 | else |
| 4614 | acc0 &= 0xffffffffll; |
| 4615 | } |
| 4616 | |
| 4617 | STORE (AXREG (0), acc0 >> 32); |
| 4618 | STORE (AWREG (0), acc0); |
| 4619 | SET_ASTATREG (av0, v && acc1); |
| 4620 | if (v) |
| 4621 | SET_ASTATREG (av0s, v); |
| 4622 | |
| 4623 | if (aop == 0 || aop == 1) |
| 4624 | { |
| 4625 | if (aop) /* Dregs_lo = A0 += A1 */ |
| 4626 | { |
| 4627 | dreg = saturate_s32 (rnd16 (acc0) << 16, &sat); |
| 4628 | if (HL) |
| 4629 | STORE (DREG (dst0), REG_H_L (dreg, DREG (dst0))); |
| 4630 | else |
| 4631 | STORE (DREG (dst0), REG_H_L (DREG (dst0), dreg >> 16)); |
| 4632 | } |
| 4633 | else /* Dregs = A0 += A1 */ |
| 4634 | { |
| 4635 | dreg = saturate_s32 (acc0, &sat); |
| 4636 | STORE (DREG (dst0), dreg); |
| 4637 | } |
| 4638 | |
| 4639 | STORE (ASTATREG (az), dreg == 0); |
| 4640 | STORE (ASTATREG (an), !!(dreg & 0x80000000)); |
| 4641 | STORE (ASTATREG (ac0), carry); |
| 4642 | STORE (ASTATREG (ac0_copy), carry); |
| 4643 | STORE (ASTATREG (v), sat); |
| 4644 | STORE (ASTATREG (v_copy), sat); |
| 4645 | if (sat) |
| 4646 | STORE (ASTATREG (vs), sat); |
| 4647 | } |
| 4648 | else |
| 4649 | { |
| 4650 | STORE (ASTATREG (az), acc0 == 0); |
| 4651 | STORE (ASTATREG (an), !!(acc0 & 0x8000000000ull)); |
| 4652 | STORE (ASTATREG (ac0), carry); |
| 4653 | STORE (ASTATREG (ac0_copy), carry); |
| 4654 | } |
| 4655 | } |
| 4656 | else if ((aop == 0 || aop == 1) && aopcde == 10) |
| 4657 | { |
| 4658 | TRACE_INSN (cpu, "R%i.L = A%i.X;", dst0, aop); |
| 4659 | SET_DREG_L (dst0, (bs8)AXREG (aop)); |
| 4660 | } |
| 4661 | else if (aop == 0 && aopcde == 4) |
| 4662 | { |
| 4663 | TRACE_INSN (cpu, "R%i = R%i + R%i%s;", dst0, src0, src1, amod1 (s, x)); |
| 4664 | SET_DREG (dst0, add32 (cpu, DREG (src0), DREG (src1), 1, s)); |
| 4665 | } |
| 4666 | else if (aop == 1 && aopcde == 4) |
| 4667 | { |
| 4668 | TRACE_INSN (cpu, "R%i = R%i - R%i%s;", dst0, src0, src1, amod1 (s, x)); |
| 4669 | SET_DREG (dst0, sub32 (cpu, DREG (src0), DREG (src1), 1, s, 0)); |
| 4670 | } |
| 4671 | else if (aop == 2 && aopcde == 4) |
| 4672 | { |
| 4673 | TRACE_INSN (cpu, "R%i = R%i + R%i, R%i = R%i - R%i%s;", |
| 4674 | dst1, src0, src1, dst0, src0, src1, amod1 (s, x)); |
| 4675 | |
| 4676 | if (dst0 == dst1) |
| 4677 | illegal_instruction_combination (cpu); |
| 4678 | |
| 4679 | STORE (DREG (dst1), add32 (cpu, DREG (src0), DREG (src1), 1, s)); |
| 4680 | STORE (DREG (dst0), sub32 (cpu, DREG (src0), DREG (src1), 1, s, 1)); |
| 4681 | } |
| 4682 | else if ((aop == 0 || aop == 1) && aopcde == 17) |
| 4683 | { |
| 4684 | bs40 acc0 = get_extended_acc (cpu, 0); |
| 4685 | bs40 acc1 = get_extended_acc (cpu, 1); |
| 4686 | bs40 val0, val1, sval0, sval1; |
| 4687 | bu32 sat, sat_i; |
| 4688 | |
| 4689 | TRACE_INSN (cpu, "R%i = A%i + A%i, R%i = A%i - A%i%s", |
| 4690 | dst1, !aop, aop, dst0, !aop, aop, amod1 (s, x)); |
| 4691 | TRACE_DECODE (cpu, "R%i = A%i:%#"PRIx64" + A%i:%#"PRIx64", " |
| 4692 | "R%i = A%i:%#"PRIx64" - A%i:%#"PRIx64"%s", |
| 4693 | dst1, !aop, aop ? acc0 : acc1, aop, aop ? acc1 : acc0, |
| 4694 | dst0, !aop, aop ? acc0 : acc1, aop, aop ? acc1 : acc0, |
| 4695 | amod1 (s, x)); |
| 4696 | |
| 4697 | if (dst0 == dst1) |
| 4698 | illegal_instruction_combination (cpu); |
| 4699 | |
| 4700 | val1 = acc0 + acc1; |
| 4701 | if (aop) |
| 4702 | val0 = acc0 - acc1; |
| 4703 | else |
| 4704 | val0 = acc1 - acc0; |
| 4705 | |
| 4706 | sval0 = saturate_s32 (val0, &sat); |
| 4707 | sat_i = sat; |
| 4708 | sval1 = saturate_s32 (val1, &sat); |
| 4709 | sat_i |= sat; |
| 4710 | if (s) |
| 4711 | { |
| 4712 | val0 = sval0; |
| 4713 | val1 = sval1; |
| 4714 | } |
| 4715 | |
| 4716 | STORE (DREG (dst0), val0); |
| 4717 | STORE (DREG (dst1), val1); |
| 4718 | SET_ASTATREG (v, sat_i); |
| 4719 | if (sat_i) |
| 4720 | SET_ASTATREG (vs, sat_i); |
| 4721 | SET_ASTATREG (an, val0 & 0x80000000 || val1 & 0x80000000); |
| 4722 | SET_ASTATREG (az, val0 == 0 || val1 == 0); |
| 4723 | SET_ASTATREG (ac1, (bu40)~acc0 < (bu40)acc1); |
| 4724 | if (aop) |
| 4725 | SET_ASTATREG (ac0, !!((bu40)acc1 <= (bu40)acc0)); |
| 4726 | else |
| 4727 | SET_ASTATREG (ac0, !!((bu40)acc0 <= (bu40)acc1)); |
| 4728 | } |
| 4729 | else if (aop == 0 && aopcde == 18) |
| 4730 | { |
| 4731 | bu40 acc0 = get_extended_acc (cpu, 0); |
| 4732 | bu40 acc1 = get_extended_acc (cpu, 1); |
| 4733 | bu32 s0L = DREG (src0); |
| 4734 | bu32 s0H = DREG (src0 + 1); |
| 4735 | bu32 s1L = DREG (src1); |
| 4736 | bu32 s1H = DREG (src1 + 1); |
| 4737 | bu32 s0, s1; |
| 4738 | bs16 tmp0, tmp1, tmp2, tmp3; |
| 4739 | |
| 4740 | /* This instruction is only defined for register pairs R1:0 and R3:2. */ |
| 4741 | if (!((src0 == 0 || src0 == 2) && (src1 == 0 || src1 == 2))) |
| 4742 | illegal_instruction (cpu); |
| 4743 | |
| 4744 | TRACE_INSN (cpu, "SAA (R%i:%i, R%i:%i)%s", src0 + 1, src0, |
| 4745 | src1 + 1, src1, s ? " (R)" :""); |
| 4746 | |
| 4747 | /* Bit s determines the order of the two registers from a pair: |
| 4748 | if s=0 the low-order bytes come from the low reg in the pair, |
| 4749 | and if s=1 the low-order bytes come from the high reg. */ |
| 4750 | |
| 4751 | if (s) |
| 4752 | { |
| 4753 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4754 | s1 = algn (s1H, s1L, IREG (1) & 3); |
| 4755 | } |
| 4756 | else |
| 4757 | { |
| 4758 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4759 | s1 = algn (s1L, s1H, IREG (1) & 3); |
| 4760 | } |
| 4761 | |
| 4762 | /* Find the absolute difference between pairs, make it |
| 4763 | absolute, then add it to the existing accumulator half. */ |
| 4764 | /* Byte 0 */ |
| 4765 | tmp0 = ((s0 << 24) >> 24) - ((s1 << 24) >> 24); |
| 4766 | tmp1 = ((s0 << 16) >> 24) - ((s1 << 16) >> 24); |
| 4767 | tmp2 = ((s0 << 8) >> 24) - ((s1 << 8) >> 24); |
| 4768 | tmp3 = ((s0 << 0) >> 24) - ((s1 << 0) >> 24); |
| 4769 | |
| 4770 | tmp0 = (tmp0 < 0) ? -tmp0 : tmp0; |
| 4771 | tmp1 = (tmp1 < 0) ? -tmp1 : tmp1; |
| 4772 | tmp2 = (tmp2 < 0) ? -tmp2 : tmp2; |
| 4773 | tmp3 = (tmp3 < 0) ? -tmp3 : tmp3; |
| 4774 | |
| 4775 | s0L = saturate_u16 ((bu32)tmp0 + ((acc0 >> 0) & 0xffff), 0); |
| 4776 | s0H = saturate_u16 ((bu32)tmp1 + ((acc0 >> 16) & 0xffff), 0); |
| 4777 | s1L = saturate_u16 ((bu32)tmp2 + ((acc1 >> 0) & 0xffff), 0); |
| 4778 | s1H = saturate_u16 ((bu32)tmp3 + ((acc1 >> 16) & 0xffff), 0); |
| 4779 | |
| 4780 | STORE (AWREG (0), (s0H << 16) | (s0L & 0xFFFF)); |
| 4781 | STORE (AXREG (0), 0); |
| 4782 | STORE (AWREG (1), (s1H << 16) | (s1L & 0xFFFF)); |
| 4783 | STORE (AXREG (1), 0); |
| 4784 | } |
| 4785 | else if (aop == 3 && aopcde == 18) |
| 4786 | { |
| 4787 | TRACE_INSN (cpu, "DISALGNEXCPT"); |
| 4788 | DIS_ALGN_EXPT |= 1; |
| 4789 | } |
| 4790 | else if ((aop == 0 || aop == 1) && aopcde == 20) |
| 4791 | { |
| 4792 | bu32 s0, s0L, s0H, s1, s1L, s1H; |
| 4793 | const char * const opts[] = { "", " (R)", " (T)", " (T, R)" }; |
| 4794 | |
| 4795 | TRACE_INSN (cpu, "R%i = BYTEOP1P (R%i:%i, R%i:%i)%s;", dst0, |
| 4796 | src0 + 1, src0, src1 + 1, src1, opts[s + (aop << 1)]); |
| 4797 | |
| 4798 | s0L = DREG (src0); |
| 4799 | s0H = DREG (src0 + 1); |
| 4800 | s1L = DREG (src1); |
| 4801 | s1H = DREG (src1 + 1); |
| 4802 | if (s) |
| 4803 | { |
| 4804 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4805 | s1 = algn (s1H, s1L, IREG (1) & 3); |
| 4806 | } |
| 4807 | else |
| 4808 | { |
| 4809 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4810 | s1 = algn (s1L, s1H, IREG (1) & 3); |
| 4811 | } |
| 4812 | |
| 4813 | SET_DREG (dst0, |
| 4814 | (((((s0 >> 0) & 0xff) + ((s1 >> 0) & 0xff) + !aop) >> 1) << 0) | |
| 4815 | (((((s0 >> 8) & 0xff) + ((s1 >> 8) & 0xff) + !aop) >> 1) << 8) | |
| 4816 | (((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff) + !aop) >> 1) << 16) | |
| 4817 | (((((s0 >> 24) & 0xff) + ((s1 >> 24) & 0xff) + !aop) >> 1) << 24)); |
| 4818 | } |
| 4819 | else if (aop == 0 && aopcde == 21) |
| 4820 | { |
| 4821 | bu32 s0, s0L, s0H, s1, s1L, s1H; |
| 4822 | |
| 4823 | TRACE_INSN (cpu, "(R%i, R%i) = BYTEOP16P (R%i:%i, R%i:%i)%s;", dst1, dst0, |
| 4824 | src0 + 1, src0, src1 + 1, src1, s ? " (R)" : ""); |
| 4825 | |
| 4826 | if (dst0 == dst1) |
| 4827 | illegal_instruction_combination (cpu); |
| 4828 | |
| 4829 | s0L = DREG (src0); |
| 4830 | s0H = DREG (src0 + 1); |
| 4831 | s1L = DREG (src1); |
| 4832 | s1H = DREG (src1 + 1); |
| 4833 | if (s) |
| 4834 | { |
| 4835 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4836 | s1 = algn (s1H, s1L, IREG (1) & 3); |
| 4837 | } |
| 4838 | else |
| 4839 | { |
| 4840 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4841 | s1 = algn (s1L, s1H, IREG (1) & 3); |
| 4842 | } |
| 4843 | |
| 4844 | SET_DREG (dst0, |
| 4845 | ((((s0 >> 0) & 0xff) + ((s1 >> 0) & 0xff)) << 0) | |
| 4846 | ((((s0 >> 8) & 0xff) + ((s1 >> 8) & 0xff)) << 16)); |
| 4847 | SET_DREG (dst1, |
| 4848 | ((((s0 >> 16) & 0xff) + ((s1 >> 16) & 0xff)) << 0) | |
| 4849 | ((((s0 >> 24) & 0xff) + ((s1 >> 24) & 0xff)) << 16)); |
| 4850 | } |
| 4851 | else if (aop == 1 && aopcde == 21) |
| 4852 | { |
| 4853 | bu32 s0, s0L, s0H, s1, s1L, s1H; |
| 4854 | |
| 4855 | TRACE_INSN (cpu, "(R%i, R%i) = BYTEOP16M (R%i:%i, R%i:%i)%s;", dst1, dst0, |
| 4856 | src0 + 1, src0, src1 + 1, src1, s ? " (R)" : ""); |
| 4857 | |
| 4858 | if (dst0 == dst1) |
| 4859 | illegal_instruction_combination (cpu); |
| 4860 | |
| 4861 | s0L = DREG (src0); |
| 4862 | s0H = DREG (src0 + 1); |
| 4863 | s1L = DREG (src1); |
| 4864 | s1H = DREG (src1 + 1); |
| 4865 | if (s) |
| 4866 | { |
| 4867 | s0 = algn (s0H, s0L, IREG (0) & 3); |
| 4868 | s1 = algn (s1H, s1L, IREG (1) & 3); |
| 4869 | } |
| 4870 | else |
| 4871 | { |
| 4872 | s0 = algn (s0L, s0H, IREG (0) & 3); |
| 4873 | s1 = algn (s1L, s1H, IREG (1) & 3); |
| 4874 | } |
| 4875 | |
| 4876 | SET_DREG (dst0, |
| 4877 | (((((s0 >> 0) & 0xff) - ((s1 >> 0) & 0xff)) << 0) & 0xffff) | |
| 4878 | (((((s0 >> 8) & 0xff) - ((s1 >> 8) & 0xff)) << 16))); |
| 4879 | SET_DREG (dst1, |
| 4880 | (((((s0 >> 16) & 0xff) - ((s1 >> 16) & 0xff)) << 0) & 0xffff) | |
| 4881 | (((((s0 >> 24) & 0xff) - ((s1 >> 24) & 0xff)) << 16))); |
| 4882 | } |
| 4883 | else if (aop == 1 && aopcde == 7) |
| 4884 | { |
| 4885 | TRACE_INSN (cpu, "R%i = MIN (R%i, R%i);", dst0, src0, src1); |
| 4886 | SET_DREG (dst0, min32 (cpu, DREG (src0), DREG (src1))); |
| 4887 | } |
| 4888 | else if (aop == 0 && aopcde == 7) |
| 4889 | { |
| 4890 | TRACE_INSN (cpu, "R%i = MAX (R%i, R%i);", dst0, src0, src1); |
| 4891 | SET_DREG (dst0, max32 (cpu, DREG (src0), DREG (src1))); |
| 4892 | } |
| 4893 | else if (aop == 2 && aopcde == 7) |
| 4894 | { |
| 4895 | bu32 val = DREG (src0); |
| 4896 | int v; |
| 4897 | |
| 4898 | TRACE_INSN (cpu, "R%i = ABS R%i;", dst0, src0); |
| 4899 | |
| 4900 | if (val >> 31) |
| 4901 | val = -val; |
| 4902 | v = (val == 0x80000000); |
| 4903 | if (v) |
| 4904 | val = 0x7fffffff; |
| 4905 | SET_DREG (dst0, val); |
| 4906 | |
| 4907 | SET_ASTATREG (v, v); |
| 4908 | if (v) |
| 4909 | SET_ASTATREG (vs, 1); |
| 4910 | setflags_nz (cpu, val); |
| 4911 | } |
| 4912 | else if (aop == 3 && aopcde == 7) |
| 4913 | { |
| 4914 | bu32 val = DREG (src0); |
| 4915 | |
| 4916 | TRACE_INSN (cpu, "R%i = - R%i %s;", dst0, src0, amod1 (s, 0)); |
| 4917 | |
| 4918 | if (s && val == 0x80000000) |
| 4919 | { |
| 4920 | val = 0x7fffffff; |
| 4921 | SET_ASTATREG (v, 1); |
| 4922 | SET_ASTATREG (vs, 1); |
| 4923 | } |
| 4924 | else if (val == 0x80000000) |
| 4925 | val = 0x80000000; |
| 4926 | else |
| 4927 | val = -val; |
| 4928 | SET_DREG (dst0, val); |
| 4929 | |
| 4930 | SET_ASTATREG (az, val == 0); |
| 4931 | SET_ASTATREG (an, val & 0x80000000); |
| 4932 | } |
| 4933 | else if (aop == 2 && aopcde == 6) |
| 4934 | { |
| 4935 | bu32 in = DREG (src0); |
| 4936 | bu32 hi = (in & 0x80000000 ? (bu32)-(bs16)(in >> 16) : in >> 16) << 16; |
| 4937 | bu32 lo = (in & 0x8000 ? (bu32)-(bs16)(in & 0xFFFF) : in) & 0xFFFF; |
| 4938 | int v; |
| 4939 | |
| 4940 | TRACE_INSN (cpu, "R%i = ABS R%i (V);", dst0, src0); |
| 4941 | |
| 4942 | v = 0; |
| 4943 | if (hi == 0x80000000) |
| 4944 | { |
| 4945 | hi = 0x7fff0000; |
| 4946 | v = 1; |
| 4947 | } |
| 4948 | if (lo == 0x8000) |
| 4949 | { |
| 4950 | lo = 0x7fff; |
| 4951 | v = 1; |
| 4952 | } |
| 4953 | SET_DREG (dst0, hi | lo); |
| 4954 | |
| 4955 | SET_ASTATREG (v, v); |
| 4956 | if (v) |
| 4957 | SET_ASTATREG (vs, 1); |
| 4958 | setflags_nz_2x16 (cpu, DREG (dst0)); |
| 4959 | } |
| 4960 | else if (aop == 1 && aopcde == 6) |
| 4961 | { |
| 4962 | TRACE_INSN (cpu, "R%i = MIN (R%i, R%i) (V);", dst0, src0, src1); |
| 4963 | SET_DREG (dst0, min2x16 (cpu, DREG (src0), DREG (src1))); |
| 4964 | } |
| 4965 | else if (aop == 0 && aopcde == 6) |
| 4966 | { |
| 4967 | TRACE_INSN (cpu, "R%i = MAX (R%i, R%i) (V);", dst0, src0, src1); |
| 4968 | SET_DREG (dst0, max2x16 (cpu, DREG (src0), DREG (src1))); |
| 4969 | } |
| 4970 | else if (aop == 0 && aopcde == 24) |
| 4971 | { |
| 4972 | TRACE_INSN (cpu, "R%i = BYTEPACK (R%i, R%i);", dst0, src0, src1); |
| 4973 | SET_DREG (dst0, |
| 4974 | (((DREG (src0) >> 0) & 0xff) << 0) | |
| 4975 | (((DREG (src0) >> 16) & 0xff) << 8) | |
| 4976 | (((DREG (src1) >> 0) & 0xff) << 16) | |
| 4977 | (((DREG (src1) >> 16) & 0xff) << 24)); |
| 4978 | } |
| 4979 | else if (aop == 1 && aopcde == 24) |
| 4980 | { |
| 4981 | int order, lo, hi; |
| 4982 | bu64 comb_src; |
| 4983 | bu8 bytea, byteb, bytec, byted; |
| 4984 | |
| 4985 | TRACE_INSN (cpu, "(R%i, R%i) = BYTEUNPACK R%i:%i%s;", |
| 4986 | dst1, dst0, src0 + 1, src0, s ? " (R)" : ""); |
| 4987 | |
| 4988 | if (dst0 == dst1) |
| 4989 | illegal_instruction_combination (cpu); |
| 4990 | |
| 4991 | order = IREG (0) & 0x3; |
| 4992 | if (s) |
| 4993 | hi = src0, lo = src0 + 1; |
| 4994 | else |
| 4995 | hi = src0 + 1, lo = src0; |
| 4996 | comb_src = (((bu64)DREG (hi)) << 32) | DREG (lo); |
| 4997 | bytea = (comb_src >> (0 + 8 * order)); |
| 4998 | byteb = (comb_src >> (8 + 8 * order)); |
| 4999 | bytec = (comb_src >> (16 + 8 * order)); |
| 5000 | byted = (comb_src >> (24 + 8 * order)); |
| 5001 | SET_DREG (dst0, bytea | ((bu32)byteb << 16)); |
| 5002 | SET_DREG (dst1, bytec | ((bu32)byted << 16)); |
| 5003 | } |
| 5004 | else if (aopcde == 13) |
| 5005 | { |
| 5006 | const char *searchmodes[] = { "GT", "GE", "LT", "LE" }; |
| 5007 | bool up_hi, up_lo; |
| 5008 | bs16 a0_lo, a1_lo, src_hi, src_lo; |
| 5009 | |
| 5010 | TRACE_INSN (cpu, "(R%i, R%i) = SEARCH R%i (%s);", |
| 5011 | dst1, dst0, src0, searchmodes[aop]); |
| 5012 | |
| 5013 | if (dst0 == dst1) |
| 5014 | illegal_instruction_combination (cpu); |
| 5015 | |
| 5016 | up_hi = up_lo = false; |
| 5017 | a0_lo = AWREG (0); |
| 5018 | a1_lo = AWREG (1); |
| 5019 | src_lo = DREG (src0); |
| 5020 | src_hi = DREG (src0) >> 16; |
| 5021 | |
| 5022 | switch (aop) |
| 5023 | { |
| 5024 | case 0: |
| 5025 | up_hi = (src_hi > a1_lo); |
| 5026 | up_lo = (src_lo > a0_lo); |
| 5027 | break; |
| 5028 | case 1: |
| 5029 | up_hi = (src_hi >= a1_lo); |
| 5030 | up_lo = (src_lo >= a0_lo); |
| 5031 | break; |
| 5032 | case 2: |
| 5033 | up_hi = (src_hi < a1_lo); |
| 5034 | up_lo = (src_lo < a0_lo); |
| 5035 | break; |
| 5036 | case 3: |
| 5037 | up_hi = (src_hi <= a1_lo); |
| 5038 | up_lo = (src_lo <= a0_lo); |
| 5039 | break; |
| 5040 | } |
| 5041 | |
| 5042 | if (up_hi) |
| 5043 | { |
| 5044 | SET_AREG (1, src_hi); |
| 5045 | SET_DREG (dst1, PREG (0)); |
| 5046 | } |
| 5047 | else |
| 5048 | SET_AREG (1, a1_lo); |
| 5049 | |
| 5050 | if (up_lo) |
| 5051 | { |
| 5052 | SET_AREG (0, src_lo); |
| 5053 | SET_DREG (dst0, PREG (0)); |
| 5054 | } |
| 5055 | else |
| 5056 | SET_AREG (0, a0_lo); |
| 5057 | } |
| 5058 | else |
| 5059 | illegal_instruction (cpu); |
| 5060 | } |
| 5061 | |
| 5062 | static void |
| 5063 | decode_dsp32shift_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 5064 | { |
| 5065 | /* dsp32shift |
| 5066 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 5067 | | 1 | 1 | 0 | 0 |.M.| 1 | 1 | 0 | 0 | - | - |.sopcde............| |
| 5068 | |.sop...|.HLs...|.dst0......| - | - | - |.src0......|.src1......| |
| 5069 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 5070 | int HLs = ((iw1 >> DSP32Shift_HLs_bits) & DSP32Shift_HLs_mask); |
| 5071 | int sop = ((iw1 >> DSP32Shift_sop_bits) & DSP32Shift_sop_mask); |
| 5072 | int src0 = ((iw1 >> DSP32Shift_src0_bits) & DSP32Shift_src0_mask); |
| 5073 | int src1 = ((iw1 >> DSP32Shift_src1_bits) & DSP32Shift_src1_mask); |
| 5074 | int dst0 = ((iw1 >> DSP32Shift_dst0_bits) & DSP32Shift_dst0_mask); |
| 5075 | int sopcde = ((iw0 >> (DSP32Shift_sopcde_bits - 16)) & DSP32Shift_sopcde_mask); |
| 5076 | int M = ((iw0 >> (DSP32Shift_M_bits - 16)) & DSP32Shift_M_mask); |
| 5077 | |
| 5078 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32shift); |
| 5079 | TRACE_EXTRACT (cpu, "%s: M:%i sopcde:%i sop:%i HLs:%i dst0:%i src0:%i src1:%i", |
| 5080 | __func__, M, sopcde, sop, HLs, dst0, src0, src1); |
| 5081 | |
| 5082 | if ((sop == 0 || sop == 1) && sopcde == 0) |
| 5083 | { |
| 5084 | bu16 val; |
| 5085 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5086 | |
| 5087 | TRACE_INSN (cpu, "R%i.%c = ASHIFT R%i.%c BY R%i.L%s;", |
| 5088 | dst0, HLs < 2 ? 'L' : 'H', |
| 5089 | src1, HLs & 1 ? 'H' : 'L', |
| 5090 | src0, sop == 1 ? " (S)" : ""); |
| 5091 | |
| 5092 | if ((HLs & 1) == 0) |
| 5093 | val = (bu16)(DREG (src1) & 0xFFFF); |
| 5094 | else |
| 5095 | val = (bu16)((DREG (src1) & 0xFFFF0000) >> 16); |
| 5096 | |
| 5097 | /* Positive shift magnitudes produce Logical Left shifts. |
| 5098 | Negative shift magnitudes produce Arithmetic Right shifts. */ |
| 5099 | if (shft <= 0) |
| 5100 | val = ashiftrt (cpu, val, -shft, 16); |
| 5101 | else |
| 5102 | val = lshift (cpu, val, shft, 16, sop == 1); |
| 5103 | |
| 5104 | if ((HLs & 2) == 0) |
| 5105 | STORE (DREG (dst0), REG_H_L (DREG (dst0), val)); |
| 5106 | else |
| 5107 | STORE (DREG (dst0), REG_H_L (val << 16, DREG (dst0))); |
| 5108 | } |
| 5109 | else if (sop == 2 && sopcde == 0) |
| 5110 | { |
| 5111 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5112 | bu16 val; |
| 5113 | |
| 5114 | TRACE_INSN (cpu, "R%i.%c = LSHIFT R%i.%c BY R%i.L;", |
| 5115 | dst0, HLs < 2 ? 'L' : 'H', |
| 5116 | src1, HLs & 1 ? 'H' : 'L', src0); |
| 5117 | |
| 5118 | if ((HLs & 1) == 0) |
| 5119 | val = (bu16)(DREG (src1) & 0xFFFF); |
| 5120 | else |
| 5121 | val = (bu16)((DREG (src1) & 0xFFFF0000) >> 16); |
| 5122 | |
| 5123 | if (shft < 0) |
| 5124 | val = val >> (-1 * shft); |
| 5125 | else |
| 5126 | val = val << shft; |
| 5127 | |
| 5128 | if ((HLs & 2) == 0) |
| 5129 | SET_DREG (dst0, REG_H_L (DREG (dst0), val)); |
| 5130 | else |
| 5131 | SET_DREG (dst0, REG_H_L (val << 16, DREG (dst0))); |
| 5132 | |
| 5133 | SET_ASTATREG (az, !((val & 0xFFFF0000) == 0) || ((val & 0xFFFF) == 0)); |
| 5134 | SET_ASTATREG (an, (!!(val & 0x80000000)) ^ (!!(val & 0x8000))); |
| 5135 | SET_ASTATREG (v, 0); |
| 5136 | } |
| 5137 | else if (sop == 2 && sopcde == 3 && (HLs == 1 || HLs == 0)) |
| 5138 | { |
| 5139 | int shift = imm6 (DREG (src0) & 0xFFFF); |
| 5140 | bu32 cc = CCREG; |
| 5141 | bu40 acc = get_unextended_acc (cpu, HLs); |
| 5142 | |
| 5143 | TRACE_INSN (cpu, "A%i = ROT A%i BY R%i.L;", HLs, HLs, src0); |
| 5144 | TRACE_DECODE (cpu, "A%i:%#"PRIx64" shift:%i CC:%i", HLs, acc, shift, cc); |
| 5145 | |
| 5146 | acc = rot40 (acc, shift, &cc); |
| 5147 | SET_AREG (HLs, acc); |
| 5148 | if (shift) |
| 5149 | SET_CCREG (cc); |
| 5150 | } |
| 5151 | else if (sop == 0 && sopcde == 3 && (HLs == 0 || HLs == 1)) |
| 5152 | { |
| 5153 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5154 | bu64 val = get_extended_acc (cpu, HLs); |
| 5155 | |
| 5156 | HLs = !!HLs; |
| 5157 | TRACE_INSN (cpu, "A%i = ASHIFT A%i BY R%i.L;", HLs, HLs, src0); |
| 5158 | TRACE_DECODE (cpu, "A%i:%#"PRIx64" shift:%i", HLs, val, shft); |
| 5159 | |
| 5160 | if (shft <= 0) |
| 5161 | val = ashiftrt (cpu, val, -shft, 40); |
| 5162 | else |
| 5163 | val = lshift (cpu, val, shft, 40, 0); |
| 5164 | |
| 5165 | STORE (AXREG (HLs), (val >> 32) & 0xff); |
| 5166 | STORE (AWREG (HLs), (val & 0xffffffff)); |
| 5167 | } |
| 5168 | else if (sop == 1 && sopcde == 3 && (HLs == 0 || HLs == 1)) |
| 5169 | { |
| 5170 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5171 | bu64 val; |
| 5172 | |
| 5173 | HLs = !!HLs; |
| 5174 | TRACE_INSN (cpu, "A%i = LSHIFT A%i BY R%i.L;", HLs, HLs, src0); |
| 5175 | val = get_extended_acc (cpu, HLs); |
| 5176 | |
| 5177 | if (shft <= 0) |
| 5178 | val = lshiftrt (cpu, val, -shft, 40); |
| 5179 | else |
| 5180 | val = lshift (cpu, val, shft, 40, 0); |
| 5181 | |
| 5182 | STORE (AXREG (HLs), (val >> 32) & 0xff); |
| 5183 | STORE (AWREG (HLs), (val & 0xffffffff)); |
| 5184 | } |
| 5185 | else if ((sop == 0 || sop == 1) && sopcde == 1) |
| 5186 | { |
| 5187 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5188 | bu16 val0, val1; |
| 5189 | bu32 astat; |
| 5190 | |
| 5191 | TRACE_INSN (cpu, "R%i = ASHIFT R%i BY R%i.L (V%s);", |
| 5192 | dst0, src1, src0, sop == 1 ? ",S" : ""); |
| 5193 | |
| 5194 | val0 = (bu16)DREG (src1) & 0xFFFF; |
| 5195 | val1 = (bu16)((DREG (src1) & 0xFFFF0000) >> 16); |
| 5196 | |
| 5197 | if (shft <= 0) |
| 5198 | { |
| 5199 | val0 = ashiftrt (cpu, val0, -shft, 16); |
| 5200 | astat = ASTAT; |
| 5201 | val1 = ashiftrt (cpu, val1, -shft, 16); |
| 5202 | } |
| 5203 | else |
| 5204 | { |
| 5205 | val0 = lshift (cpu, val0, shft, 16, sop == 1); |
| 5206 | astat = ASTAT; |
| 5207 | val1 = lshift (cpu, val1, shft, 16, sop == 1); |
| 5208 | } |
| 5209 | SET_ASTAT (ASTAT | astat); |
| 5210 | STORE (DREG (dst0), (val1 << 16) | val0); |
| 5211 | } |
| 5212 | else if ((sop == 0 || sop == 1 || sop == 2) && sopcde == 2) |
| 5213 | { |
| 5214 | /* dregs = [LA]SHIFT dregs BY dregs_lo (opt_S) */ |
| 5215 | /* sop == 1 : opt_S */ |
| 5216 | bu32 v = DREG (src1); |
| 5217 | /* LSHIFT uses sign extended low 6 bits of dregs_lo. */ |
| 5218 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5219 | |
| 5220 | TRACE_INSN (cpu, "R%i = %cSHIFT R%i BY R%i.L%s;", dst0, |
| 5221 | shft && sop != 2 ? 'A' : 'L', src1, src0, |
| 5222 | sop == 1 ? " (S)" : ""); |
| 5223 | |
| 5224 | if (shft < 0) |
| 5225 | { |
| 5226 | if (sop == 2) |
| 5227 | STORE (DREG (dst0), lshiftrt (cpu, v, -shft, 32)); |
| 5228 | else |
| 5229 | STORE (DREG (dst0), ashiftrt (cpu, v, -shft, 32)); |
| 5230 | } |
| 5231 | else |
| 5232 | STORE (DREG (dst0), lshift (cpu, v, shft, 32, sop == 1)); |
| 5233 | } |
| 5234 | else if (sop == 3 && sopcde == 2) |
| 5235 | { |
| 5236 | int shift = imm6 (DREG (src0) & 0xFFFF); |
| 5237 | bu32 src = DREG (src1); |
| 5238 | bu32 ret, cc = CCREG; |
| 5239 | |
| 5240 | TRACE_INSN (cpu, "R%i = ROT R%i BY R%i.L;", dst0, src1, src0); |
| 5241 | TRACE_DECODE (cpu, "R%i:%#x R%i:%#x shift:%i CC:%i", |
| 5242 | dst0, DREG (dst0), src1, src, shift, cc); |
| 5243 | |
| 5244 | ret = rot32 (src, shift, &cc); |
| 5245 | STORE (DREG (dst0), ret); |
| 5246 | if (shift) |
| 5247 | SET_CCREG (cc); |
| 5248 | } |
| 5249 | else if (sop == 2 && sopcde == 1) |
| 5250 | { |
| 5251 | bs32 shft = (bs8)(DREG (src0) << 2) >> 2; |
| 5252 | bu16 val0, val1; |
| 5253 | bu32 astat; |
| 5254 | |
| 5255 | TRACE_INSN (cpu, "R%i = LSHIFT R%i BY R%i.L (V);", dst0, src1, src0); |
| 5256 | |
| 5257 | val0 = (bu16)DREG (src1) & 0xFFFF; |
| 5258 | val1 = (bu16)((DREG (src1) & 0xFFFF0000) >> 16); |
| 5259 | |
| 5260 | if (shft <= 0) |
| 5261 | { |
| 5262 | val0 = lshiftrt (cpu, val0, -shft, 16); |
| 5263 | astat = ASTAT; |
| 5264 | val1 = lshiftrt (cpu, val1, -shft, 16); |
| 5265 | } |
| 5266 | else |
| 5267 | { |
| 5268 | val0 = lshift (cpu, val0, shft, 16, 0); |
| 5269 | astat = ASTAT; |
| 5270 | val1 = lshift (cpu, val1, shft, 16, 0); |
| 5271 | } |
| 5272 | SET_ASTAT (ASTAT | astat); |
| 5273 | STORE (DREG (dst0), (val1 << 16) | val0); |
| 5274 | } |
| 5275 | else if (sopcde == 4) |
| 5276 | { |
| 5277 | bu32 sv0 = DREG (src0); |
| 5278 | bu32 sv1 = DREG (src1); |
| 5279 | TRACE_INSN (cpu, "R%i = PACK (R%i.%c, R%i.%c);", dst0, |
| 5280 | src1, sop & 2 ? 'H' : 'L', |
| 5281 | src0, sop & 1 ? 'H' : 'L'); |
| 5282 | if (sop & 1) |
| 5283 | sv0 >>= 16; |
| 5284 | if (sop & 2) |
| 5285 | sv1 >>= 16; |
| 5286 | SET_DREG (dst0, (sv1 << 16) | (sv0 & 0xFFFF)); |
| 5287 | } |
| 5288 | else if (sop == 0 && sopcde == 5) |
| 5289 | { |
| 5290 | bu32 sv1 = DREG (src1); |
| 5291 | TRACE_INSN (cpu, "R%i.L = SIGNBITS R%i;", dst0, src1); |
| 5292 | SET_DREG_L (dst0, signbits (sv1, 32)); |
| 5293 | } |
| 5294 | else if (sop == 1 && sopcde == 5) |
| 5295 | { |
| 5296 | bu32 sv1 = DREG (src1); |
| 5297 | TRACE_INSN (cpu, "R%i.L = SIGNBITS R%i.L;", dst0, src1); |
| 5298 | SET_DREG_L (dst0, signbits (sv1, 16)); |
| 5299 | } |
| 5300 | else if (sop == 2 && sopcde == 5) |
| 5301 | { |
| 5302 | bu32 sv1 = DREG (src1); |
| 5303 | TRACE_INSN (cpu, "R%i.L = SIGNBITS R%i.H;", dst0, src1); |
| 5304 | SET_DREG_L (dst0, signbits (sv1 >> 16, 16)); |
| 5305 | } |
| 5306 | else if ((sop == 0 || sop == 1) && sopcde == 6) |
| 5307 | { |
| 5308 | bu64 acc = AXREG (sop); |
| 5309 | TRACE_INSN (cpu, "R%i.L = SIGNBITS A%i;", dst0, sop); |
| 5310 | acc <<= 32; |
| 5311 | acc |= AWREG (sop); |
| 5312 | SET_DREG_L (dst0, signbits (acc, 40) & 0xFFFF); |
| 5313 | } |
| 5314 | else if (sop == 3 && sopcde == 6) |
| 5315 | { |
| 5316 | bu32 v = ones (DREG (src1)); |
| 5317 | TRACE_INSN (cpu, "R%i.L = ONES R%i;", dst0, src1); |
| 5318 | SET_DREG_L (dst0, v); |
| 5319 | } |
| 5320 | else if (sop == 0 && sopcde == 7) |
| 5321 | { |
| 5322 | bu16 sv1 = (bu16)signbits (DREG (src1), 32); |
| 5323 | bu16 sv0 = (bu16)DREG (src0); |
| 5324 | bu16 dst_lo; |
| 5325 | |
| 5326 | TRACE_INSN (cpu, "R%i.L = EXPADJ (R%i, R%i.L);", dst0, src1, src0); |
| 5327 | |
| 5328 | if ((sv1 & 0x1f) < (sv0 & 0x1f)) |
| 5329 | dst_lo = sv1; |
| 5330 | else |
| 5331 | dst_lo = sv0; |
| 5332 | STORE (DREG (dst0), REG_H_L (DREG (dst0), dst_lo)); |
| 5333 | } |
| 5334 | else if (sop == 1 && sopcde == 7) |
| 5335 | { |
| 5336 | /* Exponent adjust on two 16-bit inputs. Select |
| 5337 | smallest norm among 3 inputs. */ |
| 5338 | bs16 src1_hi = (DREG (src1) & 0xFFFF0000) >> 16; |
| 5339 | bs16 src1_lo = (DREG (src1) & 0xFFFF); |
| 5340 | bu16 src0_lo = (DREG (src0) & 0xFFFF); |
| 5341 | bu16 tmp_hi, tmp_lo, tmp; |
| 5342 | |
| 5343 | TRACE_INSN (cpu, "R%i.L = EXPADJ (R%i, R%i.L) (V);", dst0, src1, src0); |
| 5344 | |
| 5345 | tmp_hi = signbits (src1_hi, 16); |
| 5346 | tmp_lo = signbits (src1_lo, 16); |
| 5347 | |
| 5348 | if ((tmp_hi & 0xf) < (tmp_lo & 0xf)) |
| 5349 | if ((tmp_hi & 0xf) < (src0_lo & 0xf)) |
| 5350 | tmp = tmp_hi; |
| 5351 | else |
| 5352 | tmp = src0_lo; |
| 5353 | else |
| 5354 | if ((tmp_lo & 0xf) < (src0_lo & 0xf)) |
| 5355 | tmp = tmp_lo; |
| 5356 | else |
| 5357 | tmp = src0_lo; |
| 5358 | STORE (DREG (dst0), REG_H_L (DREG (dst0), tmp)); |
| 5359 | } |
| 5360 | else if (sop == 2 && sopcde == 7) |
| 5361 | { |
| 5362 | /* Exponent adjust on single 16-bit register. */ |
| 5363 | bu16 tmp; |
| 5364 | bu16 src0_lo = (bu16)(DREG (src0) & 0xFFFF); |
| 5365 | |
| 5366 | TRACE_INSN (cpu, "R%i.L = EXPADJ (R%i.L, R%i.L);", dst0, src1, src0); |
| 5367 | |
| 5368 | tmp = signbits (DREG (src1) & 0xFFFF, 16); |
| 5369 | |
| 5370 | if ((tmp & 0xf) < (src0_lo & 0xf)) |
| 5371 | SET_DREG_L (dst0, tmp); |
| 5372 | else |
| 5373 | SET_DREG_L (dst0, src0_lo); |
| 5374 | } |
| 5375 | else if (sop == 3 && sopcde == 7) |
| 5376 | { |
| 5377 | bu16 tmp; |
| 5378 | bu16 src0_lo = (bu16)(DREG (src0) & 0xFFFF); |
| 5379 | |
| 5380 | TRACE_INSN (cpu, "R%i.L = EXPADJ (R%i.H, R%i.L);", dst0, src1, src0); |
| 5381 | |
| 5382 | tmp = signbits ((DREG (src1) & 0xFFFF0000) >> 16, 16); |
| 5383 | |
| 5384 | if ((tmp & 0xf) < (src0_lo & 0xf)) |
| 5385 | SET_DREG_L (dst0, tmp); |
| 5386 | else |
| 5387 | SET_DREG_L (dst0, src0_lo); |
| 5388 | } |
| 5389 | else if (sop == 0 && sopcde == 8) |
| 5390 | { |
| 5391 | bu64 acc = get_unextended_acc (cpu, 0); |
| 5392 | bu32 s0, s1; |
| 5393 | |
| 5394 | TRACE_INSN (cpu, "BITMUX (R%i, R%i, A0) (ASR);", src0, src1); |
| 5395 | |
| 5396 | if (src0 == src1) |
| 5397 | illegal_instruction_combination (cpu); |
| 5398 | |
| 5399 | s0 = DREG (src0); |
| 5400 | s1 = DREG (src1); |
| 5401 | acc = (acc >> 2) | |
| 5402 | (((bu64)s0 & 1) << 38) | |
| 5403 | (((bu64)s1 & 1) << 39); |
| 5404 | SET_DREG (src0, s0 >> 1); |
| 5405 | SET_DREG (src1, s1 >> 1); |
| 5406 | |
| 5407 | SET_AREG (0, acc); |
| 5408 | } |
| 5409 | else if (sop == 1 && sopcde == 8) |
| 5410 | { |
| 5411 | bu64 acc = get_unextended_acc (cpu, 0); |
| 5412 | bu32 s0, s1; |
| 5413 | |
| 5414 | TRACE_INSN (cpu, "BITMUX (R%i, R%i, A0) (ASL);", src0, src1); |
| 5415 | |
| 5416 | if (src0 == src1) |
| 5417 | illegal_instruction_combination (cpu); |
| 5418 | |
| 5419 | s0 = DREG (src0); |
| 5420 | s1 = DREG (src1); |
| 5421 | acc = (acc << 2) | |
| 5422 | ((s0 >> 31) & 1) | |
| 5423 | ((s1 >> 30) & 2); |
| 5424 | SET_DREG (src0, s0 << 1); |
| 5425 | SET_DREG (src1, s1 << 1); |
| 5426 | |
| 5427 | SET_AREG (0, acc); |
| 5428 | } |
| 5429 | else if ((sop == 0 || sop == 1) && sopcde == 9) |
| 5430 | { |
| 5431 | bs40 acc0 = get_unextended_acc (cpu, 0); |
| 5432 | bs16 sL, sH, out; |
| 5433 | |
| 5434 | TRACE_INSN (cpu, "R%i.L = VIT_MAX (R%i) (AS%c);", |
| 5435 | dst0, src1, sop & 1 ? 'R' : 'L'); |
| 5436 | |
| 5437 | sL = DREG (src1); |
| 5438 | sH = DREG (src1) >> 16; |
| 5439 | |
| 5440 | if (sop & 1) |
| 5441 | acc0 = (acc0 & 0xfeffffffffull) >> 1; |
| 5442 | else |
| 5443 | acc0 <<= 1; |
| 5444 | |
| 5445 | if (((sH - sL) & 0x8000) == 0) |
| 5446 | { |
| 5447 | out = sH; |
| 5448 | acc0 |= (sop & 1) ? 0x80000000 : 1; |
| 5449 | } |
| 5450 | else |
| 5451 | out = sL; |
| 5452 | |
| 5453 | SET_AREG (0, acc0); |
| 5454 | SET_DREG (dst0, REG_H_L (DREG (dst0), out)); |
| 5455 | } |
| 5456 | else if ((sop == 2 || sop == 3) && sopcde == 9) |
| 5457 | { |
| 5458 | bs40 acc0 = get_extended_acc (cpu, 0); |
| 5459 | bs16 s0L, s0H, s1L, s1H, out0, out1; |
| 5460 | |
| 5461 | TRACE_INSN (cpu, "R%i = VIT_MAX (R%i, R%i) (AS%c);", |
| 5462 | dst0, src1, src0, sop & 1 ? 'R' : 'L'); |
| 5463 | |
| 5464 | s0L = DREG (src0); |
| 5465 | s0H = DREG (src0) >> 16; |
| 5466 | s1L = DREG (src1); |
| 5467 | s1H = DREG (src1) >> 16; |
| 5468 | |
| 5469 | if (sop & 1) |
| 5470 | acc0 >>= 2; |
| 5471 | else |
| 5472 | acc0 <<= 2; |
| 5473 | |
| 5474 | if (((s0H - s0L) & 0x8000) == 0) |
| 5475 | { |
| 5476 | out0 = s0H; |
| 5477 | acc0 |= (sop & 1) ? 0x40000000 : 2; |
| 5478 | } |
| 5479 | else |
| 5480 | out0 = s0L; |
| 5481 | |
| 5482 | if (((s1H - s1L) & 0x8000) == 0) |
| 5483 | { |
| 5484 | out1 = s1H; |
| 5485 | acc0 |= (sop & 1) ? 0x80000000 : 1; |
| 5486 | } |
| 5487 | else |
| 5488 | out1 = s1L; |
| 5489 | |
| 5490 | SET_AREG (0, acc0); |
| 5491 | SET_DREG (dst0, REG_H_L (out1 << 16, out0)); |
| 5492 | } |
| 5493 | else if (sop == 0 && sopcde == 10) |
| 5494 | { |
| 5495 | bu32 v = DREG (src0); |
| 5496 | bu32 x = DREG (src1); |
| 5497 | bu32 mask = (1 << (v & 0x1f)) - 1; |
| 5498 | TRACE_INSN (cpu, "R%i = EXTRACT (R%i, R%i.L) (Z);", dst0, src1, src0); |
| 5499 | x >>= ((v >> 8) & 0x1f); |
| 5500 | SET_DREG (dst0, x & mask); |
| 5501 | setflags_logical (cpu, DREG (dst0)); |
| 5502 | } |
| 5503 | else if (sop == 1 && sopcde == 10) |
| 5504 | { |
| 5505 | bu32 v = DREG (src0); |
| 5506 | bu32 x = DREG (src1); |
| 5507 | bu32 sgn = (1 << (v & 0x1f)) >> 1; |
| 5508 | bu32 mask = (1 << (v & 0x1f)) - 1; |
| 5509 | TRACE_INSN (cpu, "R%i = EXTRACT (R%i, R%i.L) (X);", dst0, src1, src0); |
| 5510 | x >>= ((v >> 8) & 0x1f); |
| 5511 | x &= mask; |
| 5512 | if (x & sgn) |
| 5513 | x |= ~mask; |
| 5514 | SET_DREG (dst0, x); |
| 5515 | setflags_logical (cpu, DREG (dst0)); |
| 5516 | } |
| 5517 | else if ((sop == 2 || sop == 3) && sopcde == 10) |
| 5518 | { |
| 5519 | /* The first dregs is the "background" while the second dregs is the |
| 5520 | "foreground". The fg reg is used to overlay the bg reg and is: |
| 5521 | | nnnn nnnn | nnnn nnnn | xxxp pppp | xxxL LLLL | |
| 5522 | n = the fg bit field |
| 5523 | p = bit position in bg reg to start LSB of fg field |
| 5524 | L = number of fg bits to extract |
| 5525 | Using (X) sign-extends the fg bit field. */ |
| 5526 | bu32 fg = DREG (src0); |
| 5527 | bu32 bg = DREG (src1); |
| 5528 | bu32 len = fg & 0x1f; |
| 5529 | bu32 mask = (1 << MIN (16, len)) - 1; |
| 5530 | bu32 fgnd = (fg >> 16) & mask; |
| 5531 | int shft = ((fg >> 8) & 0x1f); |
| 5532 | |
| 5533 | TRACE_INSN (cpu, "R%i = DEPOSIT (R%i, R%i)%s;", dst0, src1, src0, |
| 5534 | sop == 3 ? " (X)" : ""); |
| 5535 | |
| 5536 | if (sop == 3) |
| 5537 | { |
| 5538 | /* Sign extend the fg bit field. */ |
| 5539 | mask = -1; |
| 5540 | fgnd = ((bs32)(bs16)(fgnd << (16 - len))) >> (16 - len); |
| 5541 | } |
| 5542 | fgnd <<= shft; |
| 5543 | mask <<= shft; |
| 5544 | bg &= ~mask; |
| 5545 | |
| 5546 | SET_DREG (dst0, bg | fgnd); |
| 5547 | setflags_logical (cpu, DREG (dst0)); |
| 5548 | } |
| 5549 | else if (sop == 0 && sopcde == 11) |
| 5550 | { |
| 5551 | bu64 acc0 = get_unextended_acc (cpu, 0); |
| 5552 | |
| 5553 | TRACE_INSN (cpu, "R%i.L = CC = BXORSHIFT (A0, R%i);", dst0, src0); |
| 5554 | |
| 5555 | acc0 <<= 1; |
| 5556 | SET_CCREG (xor_reduce (acc0, DREG (src0))); |
| 5557 | SET_DREG (dst0, REG_H_L (DREG (dst0), CCREG)); |
| 5558 | SET_AREG (0, acc0); |
| 5559 | } |
| 5560 | else if (sop == 1 && sopcde == 11) |
| 5561 | { |
| 5562 | bu64 acc0 = get_unextended_acc (cpu, 0); |
| 5563 | |
| 5564 | TRACE_INSN (cpu, "R%i.L = CC = BXOR (A0, R%i);", dst0, src0); |
| 5565 | |
| 5566 | SET_CCREG (xor_reduce (acc0, DREG (src0))); |
| 5567 | SET_DREG (dst0, REG_H_L (DREG (dst0), CCREG)); |
| 5568 | } |
| 5569 | else if (sop == 0 && sopcde == 12) |
| 5570 | { |
| 5571 | bu64 acc0 = get_unextended_acc (cpu, 0); |
| 5572 | bu64 acc1 = get_unextended_acc (cpu, 1); |
| 5573 | |
| 5574 | TRACE_INSN (cpu, "A0 = BXORSHIFT (A0, A1, CC);"); |
| 5575 | |
| 5576 | acc0 = (acc0 << 1) | (CCREG ^ xor_reduce (acc0, acc1)); |
| 5577 | SET_AREG (0, acc0); |
| 5578 | } |
| 5579 | else if (sop == 1 && sopcde == 12) |
| 5580 | { |
| 5581 | bu64 acc0 = get_unextended_acc (cpu, 0); |
| 5582 | bu64 acc1 = get_unextended_acc (cpu, 1); |
| 5583 | |
| 5584 | TRACE_INSN (cpu, "R%i.L = CC = BXOR (A0, A1, CC);", dst0); |
| 5585 | |
| 5586 | SET_CCREG (CCREG ^ xor_reduce (acc0, acc1)); |
| 5587 | acc0 = (acc0 << 1) | CCREG; |
| 5588 | SET_DREG (dst0, REG_H_L (DREG (dst0), CCREG)); |
| 5589 | } |
| 5590 | else if ((sop == 0 || sop == 1 || sop == 2) && sopcde == 13) |
| 5591 | { |
| 5592 | int shift = (sop + 1) * 8; |
| 5593 | TRACE_INSN (cpu, "R%i = ALIGN%i (R%i, R%i);", dst0, shift, src1, src0); |
| 5594 | SET_DREG (dst0, (DREG (src1) << (32 - shift)) | (DREG (src0) >> shift)); |
| 5595 | } |
| 5596 | else |
| 5597 | illegal_instruction (cpu); |
| 5598 | } |
| 5599 | |
| 5600 | static void |
| 5601 | decode_dsp32shiftimm_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1) |
| 5602 | { |
| 5603 | /* dsp32shiftimm |
| 5604 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 5605 | | 1 | 1 | 0 | 0 |.M.| 1 | 1 | 0 | 1 | - | - |.sopcde............| |
| 5606 | |.sop...|.HLs...|.dst0......|.immag.................|.src1......| |
| 5607 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 5608 | int src1 = ((iw1 >> DSP32ShiftImm_src1_bits) & DSP32ShiftImm_src1_mask); |
| 5609 | int sop = ((iw1 >> DSP32ShiftImm_sop_bits) & DSP32ShiftImm_sop_mask); |
| 5610 | int bit8 = ((iw1 >> 8) & 0x1); |
| 5611 | int immag = ((iw1 >> DSP32ShiftImm_immag_bits) & DSP32ShiftImm_immag_mask); |
| 5612 | int newimmag = (-(iw1 >> DSP32ShiftImm_immag_bits) & DSP32ShiftImm_immag_mask); |
| 5613 | int dst0 = ((iw1 >> DSP32ShiftImm_dst0_bits) & DSP32ShiftImm_dst0_mask); |
| 5614 | int M = ((iw0 >> (DSP32ShiftImm_M_bits - 16)) & DSP32ShiftImm_M_mask); |
| 5615 | int sopcde = ((iw0 >> (DSP32ShiftImm_sopcde_bits - 16)) & DSP32ShiftImm_sopcde_mask); |
| 5616 | int HLs = ((iw1 >> DSP32ShiftImm_HLs_bits) & DSP32ShiftImm_HLs_mask); |
| 5617 | |
| 5618 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32shiftimm); |
| 5619 | TRACE_EXTRACT (cpu, "%s: M:%i sopcde:%i sop:%i HLs:%i dst0:%i immag:%#x src1:%i", |
| 5620 | __func__, M, sopcde, sop, HLs, dst0, immag, src1); |
| 5621 | |
| 5622 | if (sopcde == 0) |
| 5623 | { |
| 5624 | bu16 in = DREG (src1) >> ((HLs & 1) ? 16 : 0); |
| 5625 | bu16 result; |
| 5626 | bu32 v; |
| 5627 | |
| 5628 | if (sop == 0) |
| 5629 | { |
| 5630 | TRACE_INSN (cpu, "R%i.%c = R%i.%c >>> %i;", |
| 5631 | dst0, (HLs & 2) ? 'H' : 'L', |
| 5632 | src1, (HLs & 1) ? 'H' : 'L', newimmag); |
| 5633 | result = ashiftrt (cpu, in, newimmag, 16); |
| 5634 | } |
| 5635 | else if (sop == 1 && bit8 == 0) |
| 5636 | { |
| 5637 | TRACE_INSN (cpu, "R%i.%c = R%i.%c << %i (S);", |
| 5638 | dst0, (HLs & 2) ? 'H' : 'L', |
| 5639 | src1, (HLs & 1) ? 'H' : 'L', immag); |
| 5640 | result = lshift (cpu, in, immag, 16, 1); |
| 5641 | } |
| 5642 | else if (sop == 1 && bit8) |
| 5643 | { |
| 5644 | TRACE_INSN (cpu, "R%i.%c = R%i.%c >>> %i (S);", |
| 5645 | dst0, (HLs & 2) ? 'H' : 'L', |
| 5646 | src1, (HLs & 1) ? 'H' : 'L', immag); |
| 5647 | result = lshift (cpu, in, immag, 16, 1); |
| 5648 | } |
| 5649 | else if (sop == 2 && bit8) |
| 5650 | { |
| 5651 | TRACE_INSN (cpu, "R%i.%c = R%i.%c >> %i;", |
| 5652 | dst0, (HLs & 2) ? 'H' : 'L', |
| 5653 | src1, (HLs & 1) ? 'H' : 'L', newimmag); |
| 5654 | result = lshiftrt (cpu, in, newimmag, 16); |
| 5655 | } |
| 5656 | else if (sop == 2 && bit8 == 0) |
| 5657 | { |
| 5658 | TRACE_INSN (cpu, "R%i.%c = R%i.%c << %i;", |
| 5659 | dst0, (HLs & 2) ? 'H' : 'L', |
| 5660 | src1, (HLs & 1) ? 'H' : 'L', immag); |
| 5661 | result = lshift (cpu, in, immag, 16, 0); |
| 5662 | } |
| 5663 | else |
| 5664 | illegal_instruction (cpu); |
| 5665 | |
| 5666 | v = DREG (dst0); |
| 5667 | if (HLs & 2) |
| 5668 | STORE (DREG (dst0), (v & 0xFFFF) | (result << 16)); |
| 5669 | else |
| 5670 | STORE (DREG (dst0), (v & 0xFFFF0000) | result); |
| 5671 | } |
| 5672 | else if (sop == 2 && sopcde == 3 && (HLs == 1 || HLs == 0)) |
| 5673 | { |
| 5674 | int shift = imm6 (immag); |
| 5675 | bu32 cc = CCREG; |
| 5676 | bu40 acc = get_unextended_acc (cpu, HLs); |
| 5677 | |
| 5678 | TRACE_INSN (cpu, "A%i = ROT A%i BY %i;", HLs, HLs, shift); |
| 5679 | TRACE_DECODE (cpu, "A%i:%#"PRIx64" shift:%i CC:%i", HLs, acc, shift, cc); |
| 5680 | |
| 5681 | acc = rot40 (acc, shift, &cc); |
| 5682 | SET_AREG (HLs, acc); |
| 5683 | if (shift) |
| 5684 | SET_CCREG (cc); |
| 5685 | } |
| 5686 | else if (sop == 0 && sopcde == 3 && bit8 == 1) |
| 5687 | { |
| 5688 | /* Arithmetic shift, so shift in sign bit copies. */ |
| 5689 | bu64 acc; |
| 5690 | int shift = uimm5 (newimmag); |
| 5691 | HLs = !!HLs; |
| 5692 | |
| 5693 | TRACE_INSN (cpu, "A%i = A%i >>> %i;", HLs, HLs, shift); |
| 5694 | |
| 5695 | acc = get_extended_acc (cpu, HLs); |
| 5696 | acc >>= shift; |
| 5697 | /* Sign extend again. */ |
| 5698 | if (acc & (1ULL << 39)) |
| 5699 | acc |= -(1ULL << 39); |
| 5700 | else |
| 5701 | acc &= ~(-(1ULL << 39)); |
| 5702 | |
| 5703 | STORE (AXREG (HLs), (acc >> 32) & 0xFF); |
| 5704 | STORE (AWREG (HLs), acc & 0xFFFFFFFF); |
| 5705 | } |
| 5706 | else if ((sop == 0 && sopcde == 3 && bit8 == 0) |
| 5707 | || (sop == 1 && sopcde == 3)) |
| 5708 | { |
| 5709 | bu64 acc; |
| 5710 | int shiftup = uimm5 (immag); |
| 5711 | int shiftdn = uimm5 (newimmag); |
| 5712 | HLs = !!HLs; |
| 5713 | |
| 5714 | TRACE_INSN (cpu, "A%i = A%i %s %i;", HLs, HLs, |
| 5715 | sop == 0 ? "<<" : ">>", |
| 5716 | sop == 0 ? shiftup : shiftdn); |
| 5717 | |
| 5718 | acc = AXREG (HLs); |
| 5719 | /* Logical shift, so shift in zeroes. */ |
| 5720 | acc &= 0xFF; |
| 5721 | acc <<= 32; |
| 5722 | acc |= AWREG (HLs); |
| 5723 | |
| 5724 | if (sop == 0) |
| 5725 | acc <<= shiftup; |
| 5726 | else |
| 5727 | acc >>= shiftdn; |
| 5728 | |
| 5729 | SET_AREG (HLs, acc); |
| 5730 | SET_ASTATREG (an, !!(acc & 0x8000000000ull)); |
| 5731 | SET_ASTATREG (az, acc == 0); |
| 5732 | } |
| 5733 | else if (sop == 1 && sopcde == 1 && bit8 == 0) |
| 5734 | { |
| 5735 | int count = imm5 (immag); |
| 5736 | bu16 val0 = DREG (src1) >> 16; |
| 5737 | bu16 val1 = DREG (src1) & 0xFFFF; |
| 5738 | bu32 astat; |
| 5739 | |
| 5740 | TRACE_INSN (cpu, "R%i = R%i << %i (V,S);", dst0, src1, count); |
| 5741 | val0 = lshift (cpu, val0, count, 16, 1); |
| 5742 | astat = ASTAT; |
| 5743 | val1 = lshift (cpu, val1, count, 16, 1); |
| 5744 | SET_ASTAT (ASTAT | astat); |
| 5745 | |
| 5746 | STORE (DREG (dst0), (val0 << 16) | val1); |
| 5747 | } |
| 5748 | else if (sop == 2 && sopcde == 1 && bit8 == 1) |
| 5749 | { |
| 5750 | int count = imm5 (newimmag); |
| 5751 | bu16 val0 = DREG (src1) & 0xFFFF; |
| 5752 | bu16 val1 = DREG (src1) >> 16; |
| 5753 | bu32 astat; |
| 5754 | |
| 5755 | TRACE_INSN (cpu, "R%i = R%i >> %i (V);", dst0, src1, count); |
| 5756 | val0 = lshiftrt (cpu, val0, count, 16); |
| 5757 | astat = ASTAT; |
| 5758 | val1 = lshiftrt (cpu, val1, count, 16); |
| 5759 | SET_ASTAT (ASTAT | astat); |
| 5760 | |
| 5761 | STORE (DREG (dst0), val0 | (val1 << 16)); |
| 5762 | } |
| 5763 | else if (sop == 2 && sopcde == 1 && bit8 == 0) |
| 5764 | { |
| 5765 | int count = imm5 (immag); |
| 5766 | bu16 val0 = DREG (src1) & 0xFFFF; |
| 5767 | bu16 val1 = DREG (src1) >> 16; |
| 5768 | bu32 astat; |
| 5769 | |
| 5770 | TRACE_INSN (cpu, "R%i = R%i << %i (V);", dst0, src1, count); |
| 5771 | val0 = lshift (cpu, val0, count, 16, 0); |
| 5772 | astat = ASTAT; |
| 5773 | val1 = lshift (cpu, val1, count, 16, 0); |
| 5774 | SET_ASTAT (ASTAT | astat); |
| 5775 | |
| 5776 | STORE (DREG (dst0), val0 | (val1 << 16)); |
| 5777 | } |
| 5778 | else if (sopcde == 1 && (sop == 0 || (sop == 1 && bit8 == 1))) |
| 5779 | { |
| 5780 | int count = uimm5 (newimmag); |
| 5781 | bu16 val0 = DREG (src1) & 0xFFFF; |
| 5782 | bu16 val1 = DREG (src1) >> 16; |
| 5783 | bu32 astat; |
| 5784 | |
| 5785 | TRACE_INSN (cpu, "R%i = R%i >>> %i %s;", dst0, src1, count, |
| 5786 | sop == 0 ? "(V)" : "(V,S)"); |
| 5787 | |
| 5788 | val0 = ashiftrt (cpu, val0, count, 16); |
| 5789 | astat = ASTAT; |
| 5790 | val1 = ashiftrt (cpu, val1, count, 16); |
| 5791 | SET_ASTAT (ASTAT | astat); |
| 5792 | |
| 5793 | STORE (DREG (dst0), REG_H_L (val1 << 16, val0)); |
| 5794 | } |
| 5795 | else if (sop == 1 && sopcde == 2) |
| 5796 | { |
| 5797 | int count = imm6 (immag); |
| 5798 | |
| 5799 | TRACE_INSN (cpu, "R%i = R%i << %i (S);", dst0, src1, count); |
| 5800 | STORE (DREG (dst0), lshift (cpu, DREG (src1), count, 32, 1)); |
| 5801 | } |
| 5802 | else if (sop == 2 && sopcde == 2) |
| 5803 | { |
| 5804 | int count = imm6 (newimmag); |
| 5805 | |
| 5806 | TRACE_INSN (cpu, "R%i = R%i >> %i;", dst0, src1, count); |
| 5807 | |
| 5808 | if (count < 0) |
| 5809 | STORE (DREG (dst0), lshift (cpu, DREG (src1), -count, 32, 0)); |
| 5810 | else |
| 5811 | STORE (DREG (dst0), lshiftrt (cpu, DREG (src1), count, 32)); |
| 5812 | } |
| 5813 | else if (sop == 3 && sopcde == 2) |
| 5814 | { |
| 5815 | int shift = imm6 (immag); |
| 5816 | bu32 src = DREG (src1); |
| 5817 | bu32 ret, cc = CCREG; |
| 5818 | |
| 5819 | TRACE_INSN (cpu, "R%i = ROT R%i BY %i;", dst0, src1, shift); |
| 5820 | TRACE_DECODE (cpu, "R%i:%#x R%i:%#x shift:%i CC:%i", |
| 5821 | dst0, DREG (dst0), src1, src, shift, cc); |
| 5822 | |
| 5823 | ret = rot32 (src, shift, &cc); |
| 5824 | STORE (DREG (dst0), ret); |
| 5825 | if (shift) |
| 5826 | SET_CCREG (cc); |
| 5827 | } |
| 5828 | else if (sop == 0 && sopcde == 2) |
| 5829 | { |
| 5830 | int count = imm6 (newimmag); |
| 5831 | |
| 5832 | TRACE_INSN (cpu, "R%i = R%i >>> %i;", dst0, src1, count); |
| 5833 | |
| 5834 | if (count < 0) |
| 5835 | STORE (DREG (dst0), lshift (cpu, DREG (src1), -count, 32, 0)); |
| 5836 | else |
| 5837 | STORE (DREG (dst0), ashiftrt (cpu, DREG (src1), count, 32)); |
| 5838 | } |
| 5839 | else |
| 5840 | illegal_instruction (cpu); |
| 5841 | } |
| 5842 | |
| 5843 | static void |
| 5844 | outc (SIM_CPU *cpu, char ch) |
| 5845 | { |
| 5846 | SIM_DESC sd = CPU_STATE (cpu); |
| 5847 | sim_io_printf (sd, "%c", ch); |
| 5848 | if (ch == '\n') |
| 5849 | sim_io_flush_stdout (sd); |
| 5850 | } |
| 5851 | |
| 5852 | static void |
| 5853 | decode_psedoDEBUG_0 (SIM_CPU *cpu, bu16 iw0) |
| 5854 | { |
| 5855 | /* psedoDEBUG |
| 5856 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 5857 | | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |.fn....|.grp.......|.reg.......| |
| 5858 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 5859 | SIM_DESC sd = CPU_STATE (cpu); |
| 5860 | int fn = ((iw0 >> PseudoDbg_fn_bits) & PseudoDbg_fn_mask); |
| 5861 | int grp = ((iw0 >> PseudoDbg_grp_bits) & PseudoDbg_grp_mask); |
| 5862 | int reg = ((iw0 >> PseudoDbg_reg_bits) & PseudoDbg_reg_mask); |
| 5863 | |
| 5864 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_psedoDEBUG); |
| 5865 | TRACE_EXTRACT (cpu, "%s: fn:%i grp:%i reg:%i", __func__, fn, grp, reg); |
| 5866 | |
| 5867 | if ((reg == 0 || reg == 1) && fn == 3) |
| 5868 | { |
| 5869 | TRACE_INSN (cpu, "DBG A%i;", reg); |
| 5870 | sim_io_printf (sd, "DBG : A%i = %#"PRIx64"\n", reg, |
| 5871 | get_unextended_acc (cpu, reg)); |
| 5872 | } |
| 5873 | else if (reg == 3 && fn == 3) |
| 5874 | { |
| 5875 | TRACE_INSN (cpu, "ABORT;"); |
| 5876 | cec_exception (cpu, VEC_SIM_ABORT); |
| 5877 | SET_DREG (0, 1); |
| 5878 | } |
| 5879 | else if (reg == 4 && fn == 3) |
| 5880 | { |
| 5881 | TRACE_INSN (cpu, "HLT;"); |
| 5882 | cec_exception (cpu, VEC_SIM_HLT); |
| 5883 | SET_DREG (0, 0); |
| 5884 | } |
| 5885 | else if (reg == 5 && fn == 3) |
| 5886 | unhandled_instruction (cpu, "DBGHALT"); |
| 5887 | else if (reg == 6 && fn == 3) |
| 5888 | unhandled_instruction (cpu, "DBGCMPLX (dregs)"); |
| 5889 | else if (reg == 7 && fn == 3) |
| 5890 | unhandled_instruction (cpu, "DBG"); |
| 5891 | else if (grp == 0 && fn == 2) |
| 5892 | { |
| 5893 | TRACE_INSN (cpu, "OUTC R%i;", reg); |
| 5894 | outc (cpu, DREG (reg)); |
| 5895 | } |
| 5896 | else if (fn == 0) |
| 5897 | { |
| 5898 | const char *reg_name = get_allreg_name (grp, reg); |
| 5899 | TRACE_INSN (cpu, "DBG %s;", reg_name); |
| 5900 | sim_io_printf (sd, "DBG : %s = 0x%08x\n", reg_name, |
| 5901 | reg_read (cpu, grp, reg)); |
| 5902 | } |
| 5903 | else if (fn == 1) |
| 5904 | unhandled_instruction (cpu, "PRNT allregs"); |
| 5905 | else |
| 5906 | illegal_instruction (cpu); |
| 5907 | } |
| 5908 | |
| 5909 | static void |
| 5910 | decode_psedoOChar_0 (SIM_CPU *cpu, bu16 iw0) |
| 5911 | { |
| 5912 | /* psedoOChar |
| 5913 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 5914 | | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |.ch............................| |
| 5915 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 5916 | int ch = ((iw0 >> PseudoChr_ch_bits) & PseudoChr_ch_mask); |
| 5917 | |
| 5918 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_psedoOChar); |
| 5919 | TRACE_EXTRACT (cpu, "%s: ch:%#x", __func__, ch); |
| 5920 | TRACE_INSN (cpu, "OUTC %#x;", ch); |
| 5921 | |
| 5922 | outc (cpu, ch); |
| 5923 | } |
| 5924 | |
| 5925 | static void |
| 5926 | decode_psedodbg_assert_0 (SIM_CPU *cpu, bu16 iw0, bu16 iw1, bu32 pc) |
| 5927 | { |
| 5928 | /* psedodbg_assert |
| 5929 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ |
| 5930 | | 1 | 1 | 1 | 1 | 0 | - | - | - | dbgop |.grp.......|.regtest...| |
| 5931 | |.expected......................................................| |
| 5932 | +---+---+---+---|---+---+---+---|---+---+---+---|---+---+---+---+ */ |
| 5933 | SIM_DESC sd = CPU_STATE (cpu); |
| 5934 | int expected = ((iw1 >> PseudoDbg_Assert_expected_bits) & PseudoDbg_Assert_expected_mask); |
| 5935 | int dbgop = ((iw0 >> (PseudoDbg_Assert_dbgop_bits - 16)) & PseudoDbg_Assert_dbgop_mask); |
| 5936 | int grp = ((iw0 >> (PseudoDbg_Assert_grp_bits - 16)) & PseudoDbg_Assert_grp_mask); |
| 5937 | int regtest = ((iw0 >> (PseudoDbg_Assert_regtest_bits - 16)) & PseudoDbg_Assert_regtest_mask); |
| 5938 | int offset; |
| 5939 | bu16 actual; |
| 5940 | bu32 val = reg_read (cpu, grp, regtest); |
| 5941 | const char *reg_name = get_allreg_name (grp, regtest); |
| 5942 | const char *dbg_name, *dbg_appd; |
| 5943 | |
| 5944 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_psedodbg_assert); |
| 5945 | TRACE_EXTRACT (cpu, "%s: dbgop:%i grp:%i regtest:%i expected:%#x", |
| 5946 | __func__, dbgop, grp, regtest, expected); |
| 5947 | |
| 5948 | if (dbgop == 0 || dbgop == 2) |
| 5949 | { |
| 5950 | dbg_name = dbgop == 0 ? "DBGA" : "DBGAL"; |
| 5951 | dbg_appd = dbgop == 0 ? ".L" : ""; |
| 5952 | offset = 0; |
| 5953 | } |
| 5954 | else if (dbgop == 1 || dbgop == 3) |
| 5955 | { |
| 5956 | dbg_name = dbgop == 1 ? "DBGA" : "DBGAH"; |
| 5957 | dbg_appd = dbgop == 1 ? ".H" : ""; |
| 5958 | offset = 16; |
| 5959 | } |
| 5960 | else |
| 5961 | illegal_instruction (cpu); |
| 5962 | |
| 5963 | actual = val >> offset; |
| 5964 | |
| 5965 | TRACE_INSN (cpu, "%s (%s%s, 0x%x);", dbg_name, reg_name, dbg_appd, expected); |
| 5966 | if (actual != expected) |
| 5967 | { |
| 5968 | sim_io_printf (sd, "FAIL at %#x: %s (%s%s, 0x%04x); actual value %#x\n", |
| 5969 | pc, dbg_name, reg_name, dbg_appd, expected, actual); |
| 5970 | |
| 5971 | /* Decode the actual ASTAT bits that are different. */ |
| 5972 | if (grp == 4 && regtest == 6) |
| 5973 | { |
| 5974 | int i; |
| 5975 | |
| 5976 | sim_io_printf (sd, "Expected ASTAT:\n"); |
| 5977 | for (i = 0; i < 16; ++i) |
| 5978 | sim_io_printf (sd, " %8s%c%i%s", |
| 5979 | astat_names[i + offset], |
| 5980 | (((expected >> i) & 1) != ((actual >> i) & 1)) |
| 5981 | ? '!' : ' ', |
| 5982 | (expected >> i) & 1, |
| 5983 | i == 7 ? "\n" : ""); |
| 5984 | sim_io_printf (sd, "\n"); |
| 5985 | |
| 5986 | sim_io_printf (sd, "Actual ASTAT:\n"); |
| 5987 | for (i = 0; i < 16; ++i) |
| 5988 | sim_io_printf (sd, " %8s%c%i%s", |
| 5989 | astat_names[i + offset], |
| 5990 | (((expected >> i) & 1) != ((actual >> i) & 1)) |
| 5991 | ? '!' : ' ', |
| 5992 | (actual >> i) & 1, |
| 5993 | i == 7 ? "\n" : ""); |
| 5994 | sim_io_printf (sd, "\n"); |
| 5995 | } |
| 5996 | |
| 5997 | cec_exception (cpu, VEC_SIM_DBGA); |
| 5998 | SET_DREG (0, 1); |
| 5999 | } |
| 6000 | } |
| 6001 | |
| 6002 | static bu32 |
| 6003 | _interp_insn_bfin (SIM_CPU *cpu, bu32 pc) |
| 6004 | { |
| 6005 | bu32 insn_len; |
| 6006 | bu16 iw0, iw1; |
| 6007 | |
| 6008 | BFIN_CPU_STATE.multi_pc = pc; |
| 6009 | iw0 = IFETCH (pc); |
| 6010 | if ((iw0 & 0xc000) != 0xc000) |
| 6011 | { |
| 6012 | /* 16-bit opcode. */ |
| 6013 | insn_len = 2; |
| 6014 | if (INSN_LEN == 0) |
| 6015 | INSN_LEN = insn_len; |
| 6016 | |
| 6017 | TRACE_EXTRACT (cpu, "%s: iw0:%#x", __func__, iw0); |
| 6018 | if ((iw0 & 0xFF00) == 0x0000) |
| 6019 | decode_ProgCtrl_0 (cpu, iw0, pc); |
| 6020 | else if ((iw0 & 0xFFC0) == 0x0240) |
| 6021 | decode_CaCTRL_0 (cpu, iw0); |
| 6022 | else if ((iw0 & 0xFF80) == 0x0100) |
| 6023 | decode_PushPopReg_0 (cpu, iw0); |
| 6024 | else if ((iw0 & 0xFE00) == 0x0400) |
| 6025 | decode_PushPopMultiple_0 (cpu, iw0); |
| 6026 | else if ((iw0 & 0xFE00) == 0x0600) |
| 6027 | decode_ccMV_0 (cpu, iw0); |
| 6028 | else if ((iw0 & 0xF800) == 0x0800) |
| 6029 | decode_CCflag_0 (cpu, iw0); |
| 6030 | else if ((iw0 & 0xFFE0) == 0x0200) |
| 6031 | decode_CC2dreg_0 (cpu, iw0); |
| 6032 | else if ((iw0 & 0xFF00) == 0x0300) |
| 6033 | decode_CC2stat_0 (cpu, iw0); |
| 6034 | else if ((iw0 & 0xF000) == 0x1000) |
| 6035 | decode_BRCC_0 (cpu, iw0, pc); |
| 6036 | else if ((iw0 & 0xF000) == 0x2000) |
| 6037 | decode_UJUMP_0 (cpu, iw0, pc); |
| 6038 | else if ((iw0 & 0xF000) == 0x3000) |
| 6039 | decode_REGMV_0 (cpu, iw0); |
| 6040 | else if ((iw0 & 0xFC00) == 0x4000) |
| 6041 | decode_ALU2op_0 (cpu, iw0); |
| 6042 | else if ((iw0 & 0xFE00) == 0x4400) |
| 6043 | decode_PTR2op_0 (cpu, iw0); |
| 6044 | else if ((iw0 & 0xF800) == 0x4800) |
| 6045 | decode_LOGI2op_0 (cpu, iw0); |
| 6046 | else if ((iw0 & 0xF000) == 0x5000) |
| 6047 | decode_COMP3op_0 (cpu, iw0); |
| 6048 | else if ((iw0 & 0xF800) == 0x6000) |
| 6049 | decode_COMPI2opD_0 (cpu, iw0); |
| 6050 | else if ((iw0 & 0xF800) == 0x6800) |
| 6051 | decode_COMPI2opP_0 (cpu, iw0); |
| 6052 | else if ((iw0 & 0xF000) == 0x8000) |
| 6053 | decode_LDSTpmod_0 (cpu, iw0); |
| 6054 | else if ((iw0 & 0xFF60) == 0x9E60) |
| 6055 | decode_dagMODim_0 (cpu, iw0); |
| 6056 | else if ((iw0 & 0xFFF0) == 0x9F60) |
| 6057 | decode_dagMODik_0 (cpu, iw0); |
| 6058 | else if ((iw0 & 0xFC00) == 0x9C00) |
| 6059 | decode_dspLDST_0 (cpu, iw0); |
| 6060 | else if ((iw0 & 0xF000) == 0x9000) |
| 6061 | decode_LDST_0 (cpu, iw0); |
| 6062 | else if ((iw0 & 0xFC00) == 0xB800) |
| 6063 | decode_LDSTiiFP_0 (cpu, iw0); |
| 6064 | else if ((iw0 & 0xE000) == 0xA000) |
| 6065 | decode_LDSTii_0 (cpu, iw0); |
| 6066 | else |
| 6067 | { |
| 6068 | TRACE_EXTRACT (cpu, "%s: no matching 16-bit pattern", __func__); |
| 6069 | illegal_instruction (cpu); |
| 6070 | } |
| 6071 | return insn_len; |
| 6072 | } |
| 6073 | |
| 6074 | /* Grab the next 16 bits to determine if it's a 32-bit or 64-bit opcode. */ |
| 6075 | iw1 = IFETCH (pc + 2); |
| 6076 | if ((iw0 & BIT_MULTI_INS) && (iw0 & 0xe800) != 0xe800 /* not linkage */) |
| 6077 | { |
| 6078 | SIM_DESC sd = CPU_STATE (cpu); |
| 6079 | trace_prefix (sd, cpu, NULL_CIA, pc, TRACE_LINENUM_P (cpu), |
| 6080 | NULL, 0, "|| %#"PRIx64, sim_events_time (sd)); |
| 6081 | insn_len = 8; |
| 6082 | } |
| 6083 | else |
| 6084 | insn_len = 4; |
| 6085 | |
| 6086 | TRACE_EXTRACT (cpu, "%s: iw0:%#x iw1:%#x insn_len:%i", __func__, |
| 6087 | iw0, iw1, insn_len); |
| 6088 | |
| 6089 | /* Only cache on first run through (in case of parallel insns). */ |
| 6090 | if (INSN_LEN == 0) |
| 6091 | INSN_LEN = insn_len; |
| 6092 | |
| 6093 | if ((iw0 & 0xf7ff) == 0xc003 && (iw1 & 0xfe00) == 0x1800) |
| 6094 | { |
| 6095 | PROFILE_COUNT_INSN (cpu, pc, BFIN_INSN_dsp32mac); |
| 6096 | TRACE_INSN (cpu, "MNOP;"); |
| 6097 | } |
| 6098 | else if (((iw0 & 0xFF80) == 0xE080) && ((iw1 & 0x0C00) == 0x0000)) |
| 6099 | decode_LoopSetup_0 (cpu, iw0, iw1, pc); |
| 6100 | else if (((iw0 & 0xFF00) == 0xE100) && ((iw1 & 0x0000) == 0x0000)) |
| 6101 | decode_LDIMMhalf_0 (cpu, iw0, iw1); |
| 6102 | else if (((iw0 & 0xFE00) == 0xE200) && ((iw1 & 0x0000) == 0x0000)) |
| 6103 | decode_CALLa_0 (cpu, iw0, iw1, pc); |
| 6104 | else if (((iw0 & 0xFC00) == 0xE400) && ((iw1 & 0x0000) == 0x0000)) |
| 6105 | decode_LDSTidxI_0 (cpu, iw0, iw1); |
| 6106 | else if (((iw0 & 0xFFFE) == 0xE800) && ((iw1 & 0x0000) == 0x0000)) |
| 6107 | decode_linkage_0 (cpu, iw0, iw1); |
| 6108 | else if (((iw0 & 0xF600) == 0xC000) && ((iw1 & 0x0000) == 0x0000)) |
| 6109 | decode_dsp32mac_0 (cpu, iw0, iw1); |
| 6110 | else if (((iw0 & 0xF600) == 0xC200) && ((iw1 & 0x0000) == 0x0000)) |
| 6111 | decode_dsp32mult_0 (cpu, iw0, iw1); |
| 6112 | else if (((iw0 & 0xF7C0) == 0xC400) && ((iw1 & 0x0000) == 0x0000)) |
| 6113 | decode_dsp32alu_0 (cpu, iw0, iw1); |
| 6114 | else if (((iw0 & 0xF7E0) == 0xC600) && ((iw1 & 0x01C0) == 0x0000)) |
| 6115 | decode_dsp32shift_0 (cpu, iw0, iw1); |
| 6116 | else if (((iw0 & 0xF7E0) == 0xC680) && ((iw1 & 0x0000) == 0x0000)) |
| 6117 | decode_dsp32shiftimm_0 (cpu, iw0, iw1); |
| 6118 | else if ((iw0 & 0xFF00) == 0xF800) |
| 6119 | decode_psedoDEBUG_0 (cpu, iw0), insn_len = 2; |
| 6120 | else if ((iw0 & 0xFF00) == 0xF900) |
| 6121 | decode_psedoOChar_0 (cpu, iw0), insn_len = 2; |
| 6122 | else if (((iw0 & 0xFF00) == 0xF000) && ((iw1 & 0x0000) == 0x0000)) |
| 6123 | decode_psedodbg_assert_0 (cpu, iw0, iw1, pc); |
| 6124 | else |
| 6125 | { |
| 6126 | TRACE_EXTRACT (cpu, "%s: no matching 32-bit pattern", __func__); |
| 6127 | illegal_instruction (cpu); |
| 6128 | } |
| 6129 | |
| 6130 | return insn_len; |
| 6131 | } |
| 6132 | |
| 6133 | bu32 |
| 6134 | interp_insn_bfin (SIM_CPU *cpu, bu32 pc) |
| 6135 | { |
| 6136 | int i; |
| 6137 | bu32 insn_len; |
| 6138 | |
| 6139 | BFIN_CPU_STATE.n_stores = 0; |
| 6140 | DIS_ALGN_EXPT &= ~1; |
| 6141 | CYCLE_DELAY = 1; |
| 6142 | INSN_LEN = 0; |
| 6143 | |
| 6144 | insn_len = _interp_insn_bfin (cpu, pc); |
| 6145 | |
| 6146 | /* Proper display of multiple issue instructions. */ |
| 6147 | if (insn_len == 8) |
| 6148 | { |
| 6149 | _interp_insn_bfin (cpu, pc + 4); |
| 6150 | _interp_insn_bfin (cpu, pc + 6); |
| 6151 | } |
| 6152 | for (i = 0; i < BFIN_CPU_STATE.n_stores; i++) |
| 6153 | { |
| 6154 | bu32 *addr = BFIN_CPU_STATE.stores[i].addr; |
| 6155 | *addr = BFIN_CPU_STATE.stores[i].val; |
| 6156 | TRACE_REGISTER (cpu, "dequeuing write %s = %#x", |
| 6157 | get_store_name (cpu, addr), *addr); |
| 6158 | } |
| 6159 | |
| 6160 | cycles_inc (cpu, CYCLE_DELAY); |
| 6161 | |
| 6162 | /* Set back to zero in case a pending CEC event occurs |
| 6163 | after this this insn. */ |
| 6164 | INSN_LEN = 0; |
| 6165 | |
| 6166 | return insn_len; |
| 6167 | } |