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 #ifndef _BFIN_SIM_H_ 22 #define _BFIN_SIM_H_ 23 24 #include <stdbool.h> 25 #include <stdint.h> 26 27 typedef uint8_t bu8; 28 typedef uint16_t bu16; 29 typedef uint32_t bu32; 30 typedef uint64_t bu40; 31 typedef uint64_t bu64; 32 typedef int8_t bs8; 33 typedef int16_t bs16; 34 typedef int32_t bs32; 35 typedef int64_t bs40; 36 typedef int64_t bs64; 37 38 /* For dealing with parallel instructions, we must avoid changing our register 39 file until all parallel insns have been simulated. This queue of stores 40 can be used to delay a modification. 41 XXX: Should go and convert all 32 bit insns to use this. */ 42 struct store { 43 bu32 *addr; 44 bu32 val; 45 }; 46 47 /* The KSP/USP handling wrt SP may not follow the hardware exactly (the hw 48 looks at current mode and uses either SP or USP based on that. We instead 49 always operate on SP and mirror things in KSP and USP. During a CEC 50 transition, we take care of syncing the values. This lowers the simulation 51 complexity and speeds things up a bit. */ 52 struct bfin_cpu_state 53 { 54 bu32 dpregs[16], iregs[4], mregs[4], bregs[4], lregs[4], cycles[3]; 55 bu32 ax[2], aw[2]; 56 bu32 lt[2], lc[2], lb[2]; 57 bu32 ksp, usp, seqstat, syscfg, rets, reti, retx, retn, rete; 58 bu32 pc, emudat[2]; 59 /* These ASTAT flags need not be bu32, but it makes pointers easier. */ 60 bu32 ac0, ac0_copy, ac1, an, aq; 61 union { struct { bu32 av0; bu32 av1; }; bu32 av [2]; }; 62 union { struct { bu32 av0s; bu32 av1s; }; bu32 avs[2]; }; 63 bu32 az, cc, v, v_copy, vs; 64 bu32 rnd_mod; 65 bu32 v_internal; 66 bu32 astat_reserved; 67 68 /* Set by an instruction emulation function if we performed a jump. We 69 cannot compare oldpc to newpc as this ignores the "jump 0;" case. */ 70 bool did_jump; 71 72 /* Used by the CEC to figure out where to return to. */ 73 bu32 insn_len; 74 75 /* How many cycles did this insn take to complete ? */ 76 bu32 cycle_delay; 77 78 /* The pc currently being interpreted in parallel insns. */ 79 bu32 multi_pc; 80 81 /* Needed for supporting the DISALGNEXCPT instruction */ 82 int dis_algn_expt; 83 84 /* See notes above for struct store. */ 85 struct store stores[20]; 86 int n_stores; 87 88 #if (WITH_HW) 89 /* Cache heavily used CPU-specific device pointers. */ 90 void *cec_cache; 91 void *evt_cache; 92 void *mmu_cache; 93 void *trace_cache; 94 #endif 95 }; 96 97 #define REG_H_L(h, l) (((h) & 0xffff0000) | ((l) & 0x0000ffff)) 98 99 #define DREG(x) (BFIN_CPU_STATE.dpregs[x]) 100 #define PREG(x) (BFIN_CPU_STATE.dpregs[x + 8]) 101 #define SPREG PREG (6) 102 #define FPREG PREG (7) 103 #define IREG(x) (BFIN_CPU_STATE.iregs[x]) 104 #define MREG(x) (BFIN_CPU_STATE.mregs[x]) 105 #define BREG(x) (BFIN_CPU_STATE.bregs[x]) 106 #define LREG(x) (BFIN_CPU_STATE.lregs[x]) 107 #define AXREG(x) (BFIN_CPU_STATE.ax[x]) 108 #define AWREG(x) (BFIN_CPU_STATE.aw[x]) 109 #define CCREG (BFIN_CPU_STATE.cc) 110 #define LCREG(x) (BFIN_CPU_STATE.lc[x]) 111 #define LTREG(x) (BFIN_CPU_STATE.lt[x]) 112 #define LBREG(x) (BFIN_CPU_STATE.lb[x]) 113 #define CYCLESREG (BFIN_CPU_STATE.cycles[0]) 114 #define CYCLES2REG (BFIN_CPU_STATE.cycles[1]) 115 #define CYCLES2SHDREG (BFIN_CPU_STATE.cycles[2]) 116 #define KSPREG (BFIN_CPU_STATE.ksp) 117 #define USPREG (BFIN_CPU_STATE.usp) 118 #define SEQSTATREG (BFIN_CPU_STATE.seqstat) 119 #define SYSCFGREG (BFIN_CPU_STATE.syscfg) 120 #define RETSREG (BFIN_CPU_STATE.rets) 121 #define RETIREG (BFIN_CPU_STATE.reti) 122 #define RETXREG (BFIN_CPU_STATE.retx) 123 #define RETNREG (BFIN_CPU_STATE.retn) 124 #define RETEREG (BFIN_CPU_STATE.rete) 125 #define PCREG (BFIN_CPU_STATE.pc) 126 #define EMUDAT_INREG (BFIN_CPU_STATE.emudat[0]) 127 #define EMUDAT_OUTREG (BFIN_CPU_STATE.emudat[1]) 128 #define INSN_LEN (BFIN_CPU_STATE.insn_len) 129 #define CYCLE_DELAY (BFIN_CPU_STATE.cycle_delay) 130 #define DIS_ALGN_EXPT (BFIN_CPU_STATE.dis_algn_expt) 131 132 #define EXCAUSE_SHIFT 0 133 #define EXCAUSE_MASK (0x3f << EXCAUSE_SHIFT) 134 #define EXCAUSE ((SEQSTATREG & EXCAUSE_MASK) >> EXCAUSE_SHIFT) 135 #define HWERRCAUSE_SHIFT 14 136 #define HWERRCAUSE_MASK (0x1f << HWERRCAUSE_SHIFT) 137 #define HWERRCAUSE ((SEQSTATREG & HWERRCAUSE_MASK) >> HWERRCAUSE_SHIFT) 138 139 #define _SET_CORE32REG_IDX(reg, p, x, val) \ 140 do { \ 141 bu32 __v = (val); \ 142 TRACE_REGISTER (cpu, "wrote "#p"%i = %#x", x, __v); \ 143 reg = __v; \ 144 } while (0) 145 #define SET_DREG(x, val) _SET_CORE32REG_IDX (DREG (x), R, x, val) 146 #define SET_PREG(x, val) _SET_CORE32REG_IDX (PREG (x), P, x, val) 147 #define SET_IREG(x, val) _SET_CORE32REG_IDX (IREG (x), I, x, val) 148 #define SET_MREG(x, val) _SET_CORE32REG_IDX (MREG (x), M, x, val) 149 #define SET_BREG(x, val) _SET_CORE32REG_IDX (BREG (x), B, x, val) 150 #define SET_LREG(x, val) _SET_CORE32REG_IDX (LREG (x), L, x, val) 151 #define SET_LCREG(x, val) _SET_CORE32REG_IDX (LCREG (x), LC, x, val) 152 #define SET_LTREG(x, val) _SET_CORE32REG_IDX (LTREG (x), LT, x, val) 153 #define SET_LBREG(x, val) _SET_CORE32REG_IDX (LBREG (x), LB, x, val) 154 155 #define SET_DREG_L_H(x, l, h) SET_DREG (x, REG_H_L (h, l)) 156 #define SET_DREG_L(x, l) SET_DREG (x, REG_H_L (DREG (x), l)) 157 #define SET_DREG_H(x, h) SET_DREG (x, REG_H_L (h, DREG (x))) 158 159 #define _SET_CORE32REG_ALU(reg, p, x, val) \ 160 do { \ 161 bu32 __v = (val); \ 162 TRACE_REGISTER (cpu, "wrote A%i"#p" = %#x", x, __v); \ 163 reg = __v; \ 164 } while (0) 165 #define SET_AXREG(x, val) _SET_CORE32REG_ALU (AXREG (x), X, x, val) 166 #define SET_AWREG(x, val) _SET_CORE32REG_ALU (AWREG (x), W, x, val) 167 168 #define SET_AREG(x, val) \ 169 do { \ 170 bu40 __a = (val); \ 171 SET_AXREG (x, (__a >> 32) & 0xff); \ 172 SET_AWREG (x, __a); \ 173 } while (0) 174 #define SET_AREG32(x, val) \ 175 do { \ 176 SET_AWREG (x, val); \ 177 SET_AXREG (x, -(AWREG (x) >> 31)); \ 178 } while (0) 179 180 #define _SET_CORE32REG(reg, val) \ 181 do { \ 182 bu32 __v = (val); \ 183 TRACE_REGISTER (cpu, "wrote "#reg" = %#x", __v); \ 184 reg##REG = __v; \ 185 } while (0) 186 #define SET_FPREG(val) _SET_CORE32REG (FP, val) 187 #define SET_SPREG(val) _SET_CORE32REG (SP, val) 188 #define SET_CYCLESREG(val) _SET_CORE32REG (CYCLES, val) 189 #define SET_CYCLES2REG(val) _SET_CORE32REG (CYCLES2, val) 190 #define SET_CYCLES2SHDREG(val) _SET_CORE32REG (CYCLES2SHD, val) 191 #define SET_KSPREG(val) _SET_CORE32REG (KSP, val) 192 #define SET_USPREG(val) _SET_CORE32REG (USP, val) 193 #define SET_SYSCFGREG(val) _SET_CORE32REG (SYSCFG, val) 194 #define SET_RETSREG(val) _SET_CORE32REG (RETS, val) 195 #define SET_RETIREG(val) _SET_CORE32REG (RETI, val) 196 #define SET_RETXREG(val) _SET_CORE32REG (RETX, val) 197 #define SET_RETNREG(val) _SET_CORE32REG (RETN, val) 198 #define SET_RETEREG(val) _SET_CORE32REG (RETE, val) 199 #define SET_PCREG(val) _SET_CORE32REG (PC, val) 200 201 #define _SET_CORE32REGFIELD(reg, field, val, mask, shift) \ 202 do { \ 203 bu32 __f = (val); \ 204 bu32 __v = ((reg##REG) & ~(mask)) | (__f << (shift)); \ 205 TRACE_REGISTER (cpu, "wrote "#field" = %#x ("#reg" = %#x)", __f, __v); \ 206 reg##REG = __v; \ 207 } while (0) 208 #define SET_SEQSTATREG(val) _SET_CORE32REG (SEQSTAT, val) 209 #define SET_EXCAUSE(excp) _SET_CORE32REGFIELD (SEQSTAT, EXCAUSE, excp, EXCAUSE_MASK, EXCAUSE_SHIFT) 210 #define SET_HWERRCAUSE(hwerr) _SET_CORE32REGFIELD (SEQSTAT, HWERRCAUSE, hwerr, HWERRCAUSE_MASK, HWERRCAUSE_SHIFT) 211 212 #define AZ_BIT 0 213 #define AN_BIT 1 214 #define AC0_COPY_BIT 2 215 #define V_COPY_BIT 3 216 #define CC_BIT 5 217 #define AQ_BIT 6 218 #define RND_MOD_BIT 8 219 #define AC0_BIT 12 220 #define AC1_BIT 13 221 #define AV0_BIT 16 222 #define AV0S_BIT 17 223 #define AV1_BIT 18 224 #define AV1S_BIT 19 225 #define V_BIT 24 226 #define VS_BIT 25 227 #define ASTAT_DEFINED_BITS \ 228 ((1 << AZ_BIT) | (1 << AN_BIT) | (1 << AC0_COPY_BIT) | (1 << V_COPY_BIT) \ 229 |(1 << CC_BIT) | (1 << AQ_BIT) \ 230 |(1 << RND_MOD_BIT) \ 231 |(1 << AC0_BIT) | (1 << AC1_BIT) \ 232 |(1 << AV0_BIT) | (1 << AV0S_BIT) | (1 << AV1_BIT) | (1 << AV1S_BIT) \ 233 |(1 << V_BIT) | (1 << VS_BIT)) 234 235 #define ASTATREG(field) (BFIN_CPU_STATE.field) 236 #define ASTAT_DEPOSIT(field, bit) (ASTATREG(field) << (bit)) 237 #define ASTAT \ 238 (ASTAT_DEPOSIT(az, AZ_BIT) \ 239 |ASTAT_DEPOSIT(an, AN_BIT) \ 240 |ASTAT_DEPOSIT(ac0_copy, AC0_COPY_BIT) \ 241 |ASTAT_DEPOSIT(v_copy, V_COPY_BIT) \ 242 |ASTAT_DEPOSIT(cc, CC_BIT) \ 243 |ASTAT_DEPOSIT(aq, AQ_BIT) \ 244 |ASTAT_DEPOSIT(rnd_mod, RND_MOD_BIT) \ 245 |ASTAT_DEPOSIT(ac0, AC0_BIT) \ 246 |ASTAT_DEPOSIT(ac1, AC1_BIT) \ 247 |ASTAT_DEPOSIT(av0, AV0_BIT) \ 248 |ASTAT_DEPOSIT(av0s, AV0S_BIT) \ 249 |ASTAT_DEPOSIT(av1, AV1_BIT) \ 250 |ASTAT_DEPOSIT(av1s, AV1S_BIT) \ 251 |ASTAT_DEPOSIT(v, V_BIT) \ 252 |ASTAT_DEPOSIT(vs, VS_BIT) \ 253 |ASTATREG(astat_reserved)) 254 255 #define ASTAT_EXTRACT(a, bit) (((a) >> bit) & 1) 256 #define _SET_ASTAT(a, field, bit) (ASTATREG(field) = ASTAT_EXTRACT(a, bit)) 257 #define SET_ASTAT(a) \ 258 do { \ 259 TRACE_REGISTER (cpu, "wrote ASTAT = %#x", a); \ 260 _SET_ASTAT(a, az, AZ_BIT); \ 261 _SET_ASTAT(a, an, AN_BIT); \ 262 _SET_ASTAT(a, ac0_copy, AC0_COPY_BIT); \ 263 _SET_ASTAT(a, v_copy, V_COPY_BIT); \ 264 _SET_ASTAT(a, cc, CC_BIT); \ 265 _SET_ASTAT(a, aq, AQ_BIT); \ 266 _SET_ASTAT(a, rnd_mod, RND_MOD_BIT); \ 267 _SET_ASTAT(a, ac0, AC0_BIT); \ 268 _SET_ASTAT(a, ac1, AC1_BIT); \ 269 _SET_ASTAT(a, av0, AV0_BIT); \ 270 _SET_ASTAT(a, av0s, AV0S_BIT); \ 271 _SET_ASTAT(a, av1, AV1_BIT); \ 272 _SET_ASTAT(a, av1s, AV1S_BIT); \ 273 _SET_ASTAT(a, v, V_BIT); \ 274 _SET_ASTAT(a, vs, VS_BIT); \ 275 ASTATREG(astat_reserved) = (a) & ~ASTAT_DEFINED_BITS; \ 276 } while (0) 277 #define SET_ASTATREG(field, val) \ 278 do { \ 279 int __v = !!(val); \ 280 TRACE_REGISTER (cpu, "wrote ASTAT["#field"] = %i", __v); \ 281 ASTATREG (field) = __v; \ 282 if (&ASTATREG (field) == &ASTATREG (ac0)) \ 283 { \ 284 TRACE_REGISTER (cpu, "wrote ASTAT["#field"_copy] = %i", __v); \ 285 ASTATREG (ac0_copy) = __v; \ 286 } \ 287 else if (&ASTATREG (field) == &ASTATREG (v)) \ 288 { \ 289 TRACE_REGISTER (cpu, "wrote ASTAT["#field"_copy] = %i", __v); \ 290 ASTATREG (v_copy) = __v; \ 291 } \ 292 } while (0) 293 #define SET_CCREG(val) SET_ASTATREG (cc, val) 294 295 #define SYSCFG_SSSTEP (1 << 0) 296 #define SYSCFG_CCEN (1 << 1) 297 #define SYSCFG_SNEN (1 << 2) 298 299 #define __PUT_MEM(taddr, v, size) \ 300 do { \ 301 bu##size __v = (v); \ 302 bu32 __taddr = (taddr); \ 303 int __cnt, __bytes = size / 8; \ 304 mmu_check_addr (cpu, __taddr, true, false, __bytes); \ 305 __cnt = sim_core_write_buffer (CPU_STATE(cpu), cpu, write_map, \ 306 (void *)&__v, __taddr, __bytes); \ 307 if (__cnt != __bytes) \ 308 mmu_process_fault (cpu, __taddr, true, false, false, true); \ 309 TRACE_CORE (cpu, __taddr, __bytes, write_map, __v); \ 310 } while (0) 311 #define PUT_BYTE(taddr, v) __PUT_MEM(taddr, v, 8) 312 #define PUT_WORD(taddr, v) __PUT_MEM(taddr, v, 16) 313 #define PUT_LONG(taddr, v) __PUT_MEM(taddr, v, 32) 314 315 #define __GET_MEM(taddr, size, inst, map) \ 316 ({ \ 317 bu##size __ret; \ 318 bu32 __taddr = (taddr); \ 319 int __cnt, __bytes = size / 8; \ 320 mmu_check_addr (cpu, __taddr, false, inst, __bytes); \ 321 __cnt = sim_core_read_buffer (CPU_STATE(cpu), cpu, map, \ 322 (void *)&__ret, __taddr, __bytes); \ 323 if (__cnt != __bytes) \ 324 mmu_process_fault (cpu, __taddr, false, inst, false, true); \ 325 TRACE_CORE (cpu, __taddr, __bytes, map, __ret); \ 326 __ret; \ 327 }) 328 #define _GET_MEM(taddr, size) __GET_MEM(taddr, size, false, read_map) 329 #define GET_BYTE(taddr) _GET_MEM(taddr, 8) 330 #define GET_WORD(taddr) _GET_MEM(taddr, 16) 331 #define GET_LONG(taddr) _GET_MEM(taddr, 32) 332 333 #define IFETCH(taddr) __GET_MEM(taddr, 16, true, exec_map) 334 #define IFETCH_CHECK(taddr) mmu_check_addr (cpu, taddr, false, true, 2) 335 336 extern void bfin_syscall (SIM_CPU *); 337 extern bu32 interp_insn_bfin (SIM_CPU *, bu32); 338 extern bu32 hwloop_get_next_pc (SIM_CPU *, bu32, bu32); 339 340 /* Defines for Blackfin memory layouts. */ 341 #define BFIN_ASYNC_BASE 0x20000000 342 #define BFIN_SYSTEM_MMR_BASE 0xFFC00000 343 #define BFIN_CORE_MMR_BASE 0xFFE00000 344 #define BFIN_L1_SRAM_SCRATCH 0xFFB00000 345 #define BFIN_L1_SRAM_SCRATCH_SIZE 0x1000 346 #define BFIN_L1_SRAM_SCRATCH_END (BFIN_L1_SRAM_SCRATCH + BFIN_L1_SRAM_SCRATCH_SIZE) 347 348 #define BFIN_L1_CACHE_BYTES 32 349 350 #endif 351