1 /* armdefs.h -- ARMulator common definitions: ARM6 Instruction Emulator. 2 Copyright (C) 1994 Advanced RISC Machines Ltd. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, see <http://www.gnu.org/licenses/>. */ 16 17 #include "config.h" 18 #include <stdio.h> 19 #include <stdlib.h> 20 #include <stdint.h> 21 22 #define FALSE 0 23 #define TRUE 1 24 #define LOW 0 25 #define HIGH 1 26 #define LOWHIGH 1 27 #define HIGHLOW 2 28 29 typedef uint32_t ARMword; 30 typedef int32_t ARMsword; 31 typedef uint64_t ARMdword; 32 typedef int64_t ARMsdword; 33 typedef struct ARMul_State ARMul_State; 34 35 typedef unsigned ARMul_CPInits (ARMul_State * state); 36 typedef unsigned ARMul_CPExits (ARMul_State * state); 37 typedef unsigned ARMul_LDCs (ARMul_State * state, unsigned type, 38 ARMword instr, ARMword value); 39 typedef unsigned ARMul_STCs (ARMul_State * state, unsigned type, 40 ARMword instr, ARMword * value); 41 typedef unsigned ARMul_MRCs (ARMul_State * state, unsigned type, 42 ARMword instr, ARMword * value); 43 typedef unsigned ARMul_MCRs (ARMul_State * state, unsigned type, 44 ARMword instr, ARMword value); 45 typedef unsigned ARMul_CDPs (ARMul_State * state, unsigned type, 46 ARMword instr); 47 typedef unsigned ARMul_CPReads (ARMul_State * state, unsigned reg, 48 ARMword * value); 49 typedef unsigned ARMul_CPWrites (ARMul_State * state, unsigned reg, 50 ARMword value); 51 52 typedef double ARMdval; /* FIXME: Must be a 64-bit floating point type. */ 53 typedef float ARMfval; /* FIXME: Must be a 32-bit floating point type. */ 54 55 typedef union 56 { 57 ARMword uword[2]; 58 ARMsword sword[2]; 59 ARMfval fval[2]; 60 ARMdword dword; 61 ARMdval dval; 62 } ARM_VFP_reg; 63 64 #define VFP_fval(N) (state->VFP_Reg[(N)>> 1].fval[(N) & 1]) 65 #define VFP_uword(N) (state->VFP_Reg[(N)>> 1].uword[(N) & 1]) 66 #define VFP_sword(N) (state->VFP_Reg[(N)>> 1].sword[(N) & 1]) 67 68 #define VFP_dval(N) (state->VFP_Reg[(N)].dval) 69 #define VFP_dword(N) (state->VFP_Reg[(N)].dword) 70 71 struct ARMul_State 72 { 73 ARMword Emulate; /* to start and stop emulation */ 74 unsigned EndCondition; /* reason for stopping */ 75 ARMword Reg[16]; /* the current register file */ 76 ARMword RegBank[7][16]; /* all the registers */ 77 /* 40 bit accumulator. We always keep this 64 bits wide, 78 and move only 40 bits out of it in an MRA insn. */ 79 ARMdword Accumulator; 80 ARMword Cpsr; /* the current psr */ 81 ARMword Spsr[7]; /* the exception psr's */ 82 ARMword NFlag, ZFlag, CFlag, VFlag, IFFlags; /* dummy flags for speed */ 83 ARMword SFlag; 84 #ifdef MODET 85 ARMword TFlag; /* Thumb state */ 86 #endif 87 ARMword Bank; /* the current register bank */ 88 ARMword Mode; /* the current mode */ 89 ARMword instr, pc, temp; /* saved register state */ 90 ARMword loaded, decoded; /* saved pipeline state */ 91 unsigned long NumScycles, NumNcycles, NumIcycles, NumCcycles, NumFcycles; /* emulated cycles used */ 92 unsigned long NumInstrs; /* the number of instructions executed */ 93 unsigned NextInstr; 94 unsigned VectorCatch; /* caught exception mask */ 95 unsigned CallDebug; /* set to call the debugger */ 96 unsigned CanWatch; /* set by memory interface if its willing to suffer the 97 overhead of checking for watchpoints on each memory 98 access */ 99 unsigned MemReadDebug, MemWriteDebug; 100 unsigned long StopHandle; 101 102 unsigned char *MemDataPtr; /* admin data */ 103 unsigned char *MemInPtr; /* the Data In bus */ 104 unsigned char *MemOutPtr; /* the Data Out bus (which you may not need */ 105 unsigned char *MemSparePtr; /* extra space */ 106 ARMword MemSize; 107 108 unsigned char *OSptr; /* OS Handle */ 109 char *CommandLine; /* Command Line from ARMsd */ 110 111 ARMul_CPInits *CPInit[16]; /* coprocessor initialisers */ 112 ARMul_CPExits *CPExit[16]; /* coprocessor finalisers */ 113 ARMul_LDCs *LDC[16]; /* LDC instruction */ 114 ARMul_STCs *STC[16]; /* STC instruction */ 115 ARMul_MRCs *MRC[16]; /* MRC instruction */ 116 ARMul_MCRs *MCR[16]; /* MCR instruction */ 117 ARMul_CDPs *CDP[16]; /* CDP instruction */ 118 ARMul_CPReads *CPRead[16]; /* Read CP register */ 119 ARMul_CPWrites *CPWrite[16]; /* Write CP register */ 120 unsigned char *CPData[16]; /* Coprocessor data */ 121 unsigned char const *CPRegWords[16]; /* map of coprocessor register sizes */ 122 unsigned long LastTime; /* Value of last call to ARMul_Time() */ 123 ARMword CP14R0_CCD; /* used to count 64 clock cycles with CP14 R0 bit 124 3 set */ 125 126 unsigned EventSet; /* the number of events in the queue */ 127 unsigned long Now; /* time to the nearest cycle */ 128 struct EventNode **EventPtr; /* the event list */ 129 130 unsigned Exception; /* enable the next four values */ 131 unsigned Debug; /* show instructions as they are executed */ 132 unsigned NresetSig; /* reset the processor */ 133 unsigned NfiqSig; 134 unsigned NirqSig; 135 136 unsigned abortSig; 137 unsigned NtransSig; 138 unsigned bigendSig; 139 unsigned prog32Sig; 140 unsigned data32Sig; 141 unsigned lateabtSig; 142 ARMword Vector; /* synthesize aborts in cycle modes */ 143 ARMword Aborted; /* sticky flag for aborts */ 144 ARMword Reseted; /* sticky flag for Reset */ 145 ARMword Inted, LastInted; /* sticky flags for interrupts */ 146 ARMword Base; /* extra hand for base writeback */ 147 ARMword AbortAddr; /* to keep track of Prefetch aborts */ 148 149 const struct Dbg_HostosInterface *hostif; 150 151 unsigned is_v4; /* Are we emulating a v4 architecture (or higher) ? */ 152 unsigned is_v5; /* Are we emulating a v5 architecture ? */ 153 unsigned is_v5e; /* Are we emulating a v5e architecture ? */ 154 unsigned is_v6; /* Are we emulating a v6 architecture ? */ 155 unsigned is_XScale; /* Are we emulating an XScale architecture ? */ 156 unsigned is_iWMMXt; /* Are we emulating an iWMMXt co-processor ? */ 157 unsigned is_ep9312; /* Are we emulating a Cirrus Maverick co-processor ? */ 158 unsigned verbose; /* Print various messages like the banner */ 159 160 ARM_VFP_reg VFP_Reg[32]; /* Advanced SIMD registers. */ 161 ARMword FPSCR; /* Floating Point Status Register. */ 162 }; 163 164 /***************************************************************************\ 165 * Properties of ARM we know about * 166 \***************************************************************************/ 167 168 /* The bitflags */ 169 #define ARM_Fix26_Prop 0x01 170 #define ARM_Nexec_Prop 0x02 171 #define ARM_Debug_Prop 0x10 172 #define ARM_Isync_Prop ARM_Debug_Prop 173 #define ARM_Lock_Prop 0x20 174 #define ARM_v4_Prop 0x40 175 #define ARM_v5_Prop 0x80 176 #define ARM_v5e_Prop 0x100 177 #define ARM_XScale_Prop 0x200 178 #define ARM_ep9312_Prop 0x400 179 #define ARM_iWMMXt_Prop 0x800 180 #define ARM_v6_Prop 0x1000 181 182 /***************************************************************************\ 183 * Macros to extract instruction fields * 184 \***************************************************************************/ 185 186 #define BIT(n) ( (ARMword)(instr>>(n))&1) /* bit n of instruction */ 187 #define BITS(m,n) ( (ARMword)(instr<<(31-(n))) >> ((31-(n))+(m)) ) /* bits m to n of instr */ 188 #define TOPBITS(n) (instr >> (n)) /* bits 31 to n of instr */ 189 190 /***************************************************************************\ 191 * The hardware vector addresses * 192 \***************************************************************************/ 193 194 #define ARMResetV 0L 195 #define ARMUndefinedInstrV 4L 196 #define ARMSWIV 8L 197 #define ARMPrefetchAbortV 12L 198 #define ARMDataAbortV 16L 199 #define ARMAddrExceptnV 20L 200 #define ARMIRQV 24L 201 #define ARMFIQV 28L 202 #define ARMErrorV 32L /* This is an offset, not an address ! */ 203 204 #define ARMul_ResetV ARMResetV 205 #define ARMul_UndefinedInstrV ARMUndefinedInstrV 206 #define ARMul_SWIV ARMSWIV 207 #define ARMul_PrefetchAbortV ARMPrefetchAbortV 208 #define ARMul_DataAbortV ARMDataAbortV 209 #define ARMul_AddrExceptnV ARMAddrExceptnV 210 #define ARMul_IRQV ARMIRQV 211 #define ARMul_FIQV ARMFIQV 212 213 /***************************************************************************\ 214 * Mode and Bank Constants * 215 \***************************************************************************/ 216 217 #define USER26MODE 0L 218 #define FIQ26MODE 1L 219 #define IRQ26MODE 2L 220 #define SVC26MODE 3L 221 #define USER32MODE 16L 222 #define FIQ32MODE 17L 223 #define IRQ32MODE 18L 224 #define SVC32MODE 19L 225 #define ABORT32MODE 23L 226 #define UNDEF32MODE 27L 227 #define SYSTEMMODE 31L 228 229 #define ARM32BITMODE (state->Mode > 3) 230 #define ARM26BITMODE (state->Mode <= 3) 231 #define ARMMODE (state->Mode) 232 #define ARMul_MODEBITS 0x1fL 233 #define ARMul_MODE32BIT ARM32BITMODE 234 #define ARMul_MODE26BIT ARM26BITMODE 235 236 #define USERBANK 0 237 #define FIQBANK 1 238 #define IRQBANK 2 239 #define SVCBANK 3 240 #define ABORTBANK 4 241 #define UNDEFBANK 5 242 #define DUMMYBANK 6 243 #define SYSTEMBANK USERBANK 244 245 #define BANK_CAN_ACCESS_SPSR(bank) \ 246 ((bank) != USERBANK && (bank) != SYSTEMBANK && (bank) != DUMMYBANK) 247 248 /***************************************************************************\ 249 * Definitons of things in the emulator * 250 \***************************************************************************/ 251 252 extern void ARMul_EmulateInit (void); 253 extern ARMul_State *ARMul_NewState (void); 254 extern void ARMul_Reset (ARMul_State * state); 255 extern ARMword ARMul_DoProg (ARMul_State * state); 256 extern ARMword ARMul_DoInstr (ARMul_State * state); 257 258 /***************************************************************************\ 259 * Definitons of things for event handling * 260 \***************************************************************************/ 261 262 extern void ARMul_ScheduleEvent (ARMul_State * state, unsigned long delay, 263 unsigned (*func) ()); 264 extern void ARMul_EnvokeEvent (ARMul_State * state); 265 extern unsigned long ARMul_Time (ARMul_State * state); 266 267 /***************************************************************************\ 268 * Useful support routines * 269 \***************************************************************************/ 270 271 extern ARMword ARMul_GetReg (ARMul_State * state, unsigned mode, 272 unsigned reg); 273 extern void ARMul_SetReg (ARMul_State * state, unsigned mode, unsigned reg, 274 ARMword value); 275 extern ARMword ARMul_GetPC (ARMul_State * state); 276 extern ARMword ARMul_GetNextPC (ARMul_State * state); 277 extern void ARMul_SetPC (ARMul_State * state, ARMword value); 278 extern ARMword ARMul_GetR15 (ARMul_State * state); 279 extern void ARMul_SetR15 (ARMul_State * state, ARMword value); 280 281 extern ARMword ARMul_GetCPSR (ARMul_State * state); 282 extern void ARMul_SetCPSR (ARMul_State * state, ARMword value); 283 extern ARMword ARMul_GetSPSR (ARMul_State * state, ARMword mode); 284 extern void ARMul_SetSPSR (ARMul_State * state, ARMword mode, ARMword value); 285 286 /***************************************************************************\ 287 * Definitons of things to handle aborts * 288 \***************************************************************************/ 289 290 extern void ARMul_Abort (ARMul_State * state, ARMword address); 291 #define ARMul_ABORTWORD 0xefffffff /* SWI -1 */ 292 #define ARMul_PREFETCHABORT(address) if (state->AbortAddr == 1) \ 293 state->AbortAddr = (address & ~3L) 294 #define ARMul_DATAABORT(address) state->abortSig = HIGH ; \ 295 state->Aborted = ARMul_DataAbortV ; 296 #define ARMul_CLEARABORT state->abortSig = LOW 297 298 /***************************************************************************\ 299 * Definitons of things in the memory interface * 300 \***************************************************************************/ 301 302 extern unsigned ARMul_MemoryInit (ARMul_State * state, 303 unsigned long initmemsize); 304 extern void ARMul_MemoryExit (ARMul_State * state); 305 306 extern ARMword ARMul_LoadInstrS (ARMul_State * state, ARMword address, 307 ARMword isize); 308 extern ARMword ARMul_LoadInstrN (ARMul_State * state, ARMword address, 309 ARMword isize); 310 extern ARMword ARMul_ReLoadInstr (ARMul_State * state, ARMword address, 311 ARMword isize); 312 313 extern ARMword ARMul_LoadWordS (ARMul_State * state, ARMword address); 314 extern ARMword ARMul_LoadWordN (ARMul_State * state, ARMword address); 315 extern ARMword ARMul_LoadHalfWord (ARMul_State * state, ARMword address); 316 extern ARMword ARMul_LoadByte (ARMul_State * state, ARMword address); 317 318 extern void ARMul_StoreWordS (ARMul_State * state, ARMword address, 319 ARMword data); 320 extern void ARMul_StoreWordN (ARMul_State * state, ARMword address, 321 ARMword data); 322 extern void ARMul_StoreHalfWord (ARMul_State * state, ARMword address, 323 ARMword data); 324 extern void ARMul_StoreByte (ARMul_State * state, ARMword address, 325 ARMword data); 326 327 extern ARMword ARMul_SwapWord (ARMul_State * state, ARMword address, 328 ARMword data); 329 extern ARMword ARMul_SwapByte (ARMul_State * state, ARMword address, 330 ARMword data); 331 332 extern void ARMul_Icycles (ARMul_State * state, unsigned number, 333 ARMword address); 334 extern void ARMul_Ccycles (ARMul_State * state, unsigned number, 335 ARMword address); 336 337 extern ARMword ARMul_ReadWord (ARMul_State * state, ARMword address); 338 extern ARMword ARMul_ReadByte (ARMul_State * state, ARMword address); 339 extern ARMword ARMul_SafeReadByte (ARMul_State * state, ARMword address); 340 extern void ARMul_WriteWord (ARMul_State * state, ARMword address, 341 ARMword data); 342 extern void ARMul_WriteByte (ARMul_State * state, ARMword address, 343 ARMword data); 344 extern void ARMul_SafeWriteByte (ARMul_State * state, ARMword address, 345 ARMword data); 346 347 extern ARMword ARMul_MemAccess (ARMul_State * state, ARMword, ARMword, 348 ARMword, ARMword, ARMword, ARMword, ARMword, 349 ARMword, ARMword, ARMword); 350 351 /***************************************************************************\ 352 * Definitons of things in the co-processor interface * 353 \***************************************************************************/ 354 355 #define ARMul_FIRST 0 356 #define ARMul_TRANSFER 1 357 #define ARMul_BUSY 2 358 #define ARMul_DATA 3 359 #define ARMul_INTERRUPT 4 360 #define ARMul_DONE 0 361 #define ARMul_CANT 1 362 #define ARMul_INC 3 363 364 #define ARMul_CP13_R0_FIQ 0x1 365 #define ARMul_CP13_R0_IRQ 0x2 366 #define ARMul_CP13_R8_PMUS 0x1 367 368 #define ARMul_CP14_R0_ENABLE 0x0001 369 #define ARMul_CP14_R0_CLKRST 0x0004 370 #define ARMul_CP14_R0_CCD 0x0008 371 #define ARMul_CP14_R0_INTEN0 0x0010 372 #define ARMul_CP14_R0_INTEN1 0x0020 373 #define ARMul_CP14_R0_INTEN2 0x0040 374 #define ARMul_CP14_R0_FLAG0 0x0100 375 #define ARMul_CP14_R0_FLAG1 0x0200 376 #define ARMul_CP14_R0_FLAG2 0x0400 377 #define ARMul_CP14_R10_MOE_IB 0x0004 378 #define ARMul_CP14_R10_MOE_DB 0x0008 379 #define ARMul_CP14_R10_MOE_BT 0x000c 380 #define ARMul_CP15_R1_ENDIAN 0x0080 381 #define ARMul_CP15_R1_ALIGN 0x0002 382 #define ARMul_CP15_R5_X 0x0400 383 #define ARMul_CP15_R5_ST_ALIGN 0x0001 384 #define ARMul_CP15_R5_IMPRE 0x0406 385 #define ARMul_CP15_R5_MMU_EXCPT 0x0400 386 #define ARMul_CP15_DBCON_M 0x0100 387 #define ARMul_CP15_DBCON_E1 0x000c 388 #define ARMul_CP15_DBCON_E0 0x0003 389 390 extern unsigned ARMul_CoProInit (ARMul_State * state); 391 extern void ARMul_CoProExit (ARMul_State * state); 392 extern void ARMul_CoProAttach (ARMul_State * state, unsigned number, 393 ARMul_CPInits * init, ARMul_CPExits * exit, 394 ARMul_LDCs * ldc, ARMul_STCs * stc, 395 ARMul_MRCs * mrc, ARMul_MCRs * mcr, 396 ARMul_CDPs * cdp, 397 ARMul_CPReads * read, ARMul_CPWrites * write); 398 extern void ARMul_CoProDetach (ARMul_State * state, unsigned number); 399 extern void XScale_check_memacc (ARMul_State * state, ARMword * address, 400 int store); 401 extern void XScale_set_fsr_far (ARMul_State * state, ARMword fsr, ARMword far); 402 extern int XScale_debug_moe (ARMul_State * state, int moe); 403 404 /***************************************************************************\ 405 * Definitons of things in the host environment * 406 \***************************************************************************/ 407 408 extern unsigned ARMul_OSInit (ARMul_State * state); 409 extern unsigned ARMul_OSHandleSWI (ARMul_State * state, ARMword number); 410 411 /***************************************************************************\ 412 * Host-dependent stuff * 413 \***************************************************************************/ 414 415 extern void ARMul_UndefInstr (ARMul_State *, ARMword); 416 extern void ARMul_FixCPSR (ARMul_State *, ARMword, ARMword); 417 extern void ARMul_FixSPSR (ARMul_State *, ARMword, ARMword); 418 extern void ARMul_ConsolePrint (ARMul_State *, const char *, ...); 419 extern void ARMul_SelectProcessor (ARMul_State *, unsigned); 420