| 1 | #include <stdio.h> |
| 2 | #include <ctype.h> |
| 3 | #include "ansidecl.h" |
| 4 | #include "gdb/callback.h" |
| 5 | #include "opcode/mn10300.h" |
| 6 | #include <limits.h> |
| 7 | #include "gdb/remote-sim.h" |
| 8 | #include "bfd.h" |
| 9 | #include "sim-fpu.h" |
| 10 | |
| 11 | #ifndef INLINE |
| 12 | #ifdef __GNUC__ |
| 13 | #define INLINE inline |
| 14 | #else |
| 15 | #define INLINE |
| 16 | #endif |
| 17 | #endif |
| 18 | |
| 19 | extern host_callback *mn10300_callback; |
| 20 | extern SIM_DESC simulator; |
| 21 | |
| 22 | #define DEBUG_TRACE 0x00000001 |
| 23 | #define DEBUG_VALUES 0x00000002 |
| 24 | |
| 25 | extern int mn10300_debug; |
| 26 | |
| 27 | #if UCHAR_MAX == 255 |
| 28 | typedef unsigned char uint8; |
| 29 | typedef signed char int8; |
| 30 | #else |
| 31 | #error "Char is not an 8-bit type" |
| 32 | #endif |
| 33 | |
| 34 | #if SHRT_MAX == 32767 |
| 35 | typedef unsigned short uint16; |
| 36 | typedef signed short int16; |
| 37 | #else |
| 38 | #error "Short is not a 16-bit type" |
| 39 | #endif |
| 40 | |
| 41 | #if INT_MAX == 2147483647 |
| 42 | |
| 43 | typedef unsigned int uint32; |
| 44 | typedef signed int int32; |
| 45 | |
| 46 | #else |
| 47 | # if LONG_MAX == 2147483647 |
| 48 | |
| 49 | typedef unsigned long uint32; |
| 50 | typedef signed long int32; |
| 51 | |
| 52 | # else |
| 53 | # error "Neither int nor long is a 32-bit type" |
| 54 | # endif |
| 55 | #endif |
| 56 | |
| 57 | typedef struct |
| 58 | { |
| 59 | uint32 low, high; |
| 60 | } dword; |
| 61 | typedef uint32 reg_t; |
| 62 | |
| 63 | struct simops |
| 64 | { |
| 65 | long opcode; |
| 66 | long mask; |
| 67 | void (*func)(); |
| 68 | int length; |
| 69 | int format; |
| 70 | int numops; |
| 71 | int operands[16]; |
| 72 | }; |
| 73 | |
| 74 | /* The current state of the processor; registers, memory, etc. */ |
| 75 | |
| 76 | struct _state |
| 77 | { |
| 78 | reg_t regs[32]; /* registers, d0-d3, a0-a3, sp, pc, mdr, psw, |
| 79 | lir, lar, mdrq, plus some room for processor |
| 80 | specific regs. */ |
| 81 | union |
| 82 | { |
| 83 | reg_t fs[32]; /* FS0-31 */ |
| 84 | dword fd[16]; /* FD0,2,...,30 */ |
| 85 | } fpregs; |
| 86 | uint8 *mem; /* main memory */ |
| 87 | int exception; |
| 88 | int exited; |
| 89 | |
| 90 | /* All internal state modified by signal_exception() that may need to be |
| 91 | rolled back for passing moment-of-exception image back to gdb. */ |
| 92 | reg_t exc_trigger_regs[32]; |
| 93 | reg_t exc_suspend_regs[32]; |
| 94 | int exc_suspended; |
| 95 | |
| 96 | #define SIM_CPU_EXCEPTION_TRIGGER(SD,CPU,CIA) mn10300_cpu_exception_trigger(SD,CPU,CIA) |
| 97 | #define SIM_CPU_EXCEPTION_SUSPEND(SD,CPU,EXC) mn10300_cpu_exception_suspend(SD,CPU,EXC) |
| 98 | #define SIM_CPU_EXCEPTION_RESUME(SD,CPU,EXC) mn10300_cpu_exception_resume(SD,CPU,EXC) |
| 99 | }; |
| 100 | |
| 101 | extern struct _state State; |
| 102 | extern uint32 OP[4]; |
| 103 | extern struct simops Simops[]; |
| 104 | |
| 105 | #define PC (State.regs[REG_PC]) |
| 106 | #define SP (State.regs[REG_SP]) |
| 107 | |
| 108 | #define PSW (State.regs[11]) |
| 109 | #define PSW_Z 0x1 |
| 110 | #define PSW_N 0x2 |
| 111 | #define PSW_C 0x4 |
| 112 | #define PSW_V 0x8 |
| 113 | #define PSW_IE LSBIT (11) |
| 114 | #define PSW_LM LSMASK (10, 8) |
| 115 | |
| 116 | #define EXTRACT_PSW_LM LSEXTRACTED16 (PSW, 10, 8) |
| 117 | #define INSERT_PSW_LM(l) LSINSERTED16 ((l), 10, 8) |
| 118 | |
| 119 | #define REG_D0 0 |
| 120 | #define REG_A0 4 |
| 121 | #define REG_SP 8 |
| 122 | #define REG_PC 9 |
| 123 | #define REG_MDR 10 |
| 124 | #define REG_PSW 11 |
| 125 | #define REG_LIR 12 |
| 126 | #define REG_LAR 13 |
| 127 | #define REG_MDRQ 14 |
| 128 | #define REG_E0 15 |
| 129 | #define REG_SSP 23 |
| 130 | #define REG_MSP 24 |
| 131 | #define REG_USP 25 |
| 132 | #define REG_MCRH 26 |
| 133 | #define REG_MCRL 27 |
| 134 | #define REG_MCVF 28 |
| 135 | |
| 136 | #define REG_FPCR 29 |
| 137 | |
| 138 | #define FPCR (State.regs[REG_FPCR]) |
| 139 | |
| 140 | #define FCC_MASK LSMASK (21, 18) |
| 141 | #define RM_MASK LSMASK (17, 16) /* Must always be zero. */ |
| 142 | #define EC_MASK LSMASK (14, 10) |
| 143 | #define EE_MASK LSMASK ( 9, 5) |
| 144 | #define EF_MASK LSMASK ( 4, 0) |
| 145 | #define FPCR_MASK (FCC_MASK | EC_MASK | EE_MASK | EF_MASK) |
| 146 | |
| 147 | #define FCC_L LSBIT (21) |
| 148 | #define FCC_G LSBIT (20) |
| 149 | #define FCC_E LSBIT (19) |
| 150 | #define FCC_U LSBIT (18) |
| 151 | |
| 152 | #define EC_V LSBIT (14) |
| 153 | #define EC_Z LSBIT (13) |
| 154 | #define EC_O LSBIT (12) |
| 155 | #define EC_U LSBIT (11) |
| 156 | #define EC_I LSBIT (10) |
| 157 | |
| 158 | #define EE_V LSBIT (9) |
| 159 | #define EE_Z LSBIT (8) |
| 160 | #define EE_O LSBIT (7) |
| 161 | #define EE_U LSBIT (6) |
| 162 | #define EE_I LSBIT (5) |
| 163 | |
| 164 | #define EF_V LSBIT (4) |
| 165 | #define EF_Z LSBIT (3) |
| 166 | #define EF_O LSBIT (2) |
| 167 | #define EF_U LSBIT (1) |
| 168 | #define EF_I LSBIT (0) |
| 169 | |
| 170 | #define PSW_FE LSBIT(20) |
| 171 | #define FPU_DISABLED !(PSW & PSW_FE) |
| 172 | |
| 173 | #define XS2FS(X,S) State.fpregs.fs[((X<<4)|(S))] |
| 174 | #define AS2FS(A,S) State.fpregs.fs[((A<<2)|(S))] |
| 175 | #define Xf2FD(X,f) State.fpregs.fd[((X<<3)|(f))] |
| 176 | |
| 177 | #define FS2FPU(FS,F) sim_fpu_32to (&(F), (FS)) |
| 178 | #define FD2FPU(FD,F) sim_fpu_232to (&(F), ((FD).high), ((FD).low)) |
| 179 | #define FPU2FS(F,FS) sim_fpu_to32 (&(FS), &(F)) |
| 180 | #define FPU2FD(F,FD) sim_fpu_to232 (&((FD).high), &((FD).low), &(F)) |
| 181 | |
| 182 | #ifdef _WIN32 |
| 183 | #define SIGTRAP 5 |
| 184 | #define SIGQUIT 3 |
| 185 | #endif |
| 186 | |
| 187 | #define FETCH32(a,b,c,d) \ |
| 188 | ((a)+((b)<<8)+((c)<<16)+((d)<<24)) |
| 189 | |
| 190 | #define FETCH24(a,b,c) \ |
| 191 | ((a)+((b)<<8)+((c)<<16)) |
| 192 | |
| 193 | #define FETCH16(a,b) ((a)+((b)<<8)) |
| 194 | |
| 195 | #define load_byte(ADDR) \ |
| 196 | sim_core_read_unaligned_1 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) |
| 197 | |
| 198 | #define load_half(ADDR) \ |
| 199 | sim_core_read_unaligned_2 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) |
| 200 | |
| 201 | #define load_word(ADDR) \ |
| 202 | sim_core_read_unaligned_4 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) |
| 203 | |
| 204 | #define load_dword(ADDR) \ |
| 205 | u642dw (sim_core_read_unaligned_8 (STATE_CPU (simulator, 0), \ |
| 206 | PC, read_map, (ADDR))) |
| 207 | |
| 208 | static INLINE dword |
| 209 | u642dw (unsigned64 dw) |
| 210 | { |
| 211 | dword r; |
| 212 | |
| 213 | r.low = (unsigned32)dw; |
| 214 | r.high = (unsigned32)(dw >> 32); |
| 215 | return r; |
| 216 | } |
| 217 | |
| 218 | #define store_byte(ADDR, DATA) \ |
| 219 | sim_core_write_unaligned_1 (STATE_CPU (simulator, 0), \ |
| 220 | PC, write_map, (ADDR), (DATA)) |
| 221 | |
| 222 | |
| 223 | #define store_half(ADDR, DATA) \ |
| 224 | sim_core_write_unaligned_2 (STATE_CPU (simulator, 0), \ |
| 225 | PC, write_map, (ADDR), (DATA)) |
| 226 | |
| 227 | |
| 228 | #define store_word(ADDR, DATA) \ |
| 229 | sim_core_write_unaligned_4 (STATE_CPU (simulator, 0), \ |
| 230 | PC, write_map, (ADDR), (DATA)) |
| 231 | #define store_dword(ADDR, DATA) \ |
| 232 | sim_core_write_unaligned_8 (STATE_CPU (simulator, 0), \ |
| 233 | PC, write_map, (ADDR), dw2u64 (DATA)) |
| 234 | |
| 235 | static INLINE unsigned64 |
| 236 | dw2u64 (dword data) |
| 237 | { |
| 238 | return data.low | (((unsigned64)data.high) << 32); |
| 239 | } |
| 240 | |
| 241 | /* Function declarations. */ |
| 242 | |
| 243 | uint32 get_word (uint8 *); |
| 244 | uint16 get_half (uint8 *); |
| 245 | uint8 get_byte (uint8 *); |
| 246 | void put_word (uint8 *, uint32); |
| 247 | void put_half (uint8 *, uint16); |
| 248 | void put_byte (uint8 *, uint8); |
| 249 | |
| 250 | extern uint8 *map (SIM_ADDR addr); |
| 251 | |
| 252 | INLINE_SIM_MAIN (void) genericAdd (unsigned32 source, unsigned32 destReg); |
| 253 | INLINE_SIM_MAIN (void) genericSub (unsigned32 source, unsigned32 destReg); |
| 254 | INLINE_SIM_MAIN (void) genericCmp (unsigned32 leftOpnd, unsigned32 rightOpnd); |
| 255 | INLINE_SIM_MAIN (void) genericOr (unsigned32 source, unsigned32 destReg); |
| 256 | INLINE_SIM_MAIN (void) genericXor (unsigned32 source, unsigned32 destReg); |
| 257 | INLINE_SIM_MAIN (void) genericBtst (unsigned32 leftOpnd, unsigned32 rightOpnd); |
| 258 | INLINE_SIM_MAIN (int) syscall_read_mem (host_callback *cb, |
| 259 | struct cb_syscall *sc, |
| 260 | unsigned long taddr, |
| 261 | char *buf, |
| 262 | int bytes); |
| 263 | INLINE_SIM_MAIN (int) syscall_write_mem (host_callback *cb, |
| 264 | struct cb_syscall *sc, |
| 265 | unsigned long taddr, |
| 266 | const char *buf, |
| 267 | int bytes); |
| 268 | INLINE_SIM_MAIN (void) do_syscall (void); |
| 269 | void program_interrupt (SIM_DESC sd, sim_cpu *cpu, sim_cia cia, SIM_SIGNAL sig); |
| 270 | |
| 271 | void mn10300_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word pc); |
| 272 | void mn10300_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception); |
| 273 | void mn10300_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception); |
| 274 | |
| 275 | void fpu_disabled_exception (SIM_DESC, sim_cpu *, address_word); |
| 276 | void fpu_unimp_exception (SIM_DESC, sim_cpu *, address_word); |
| 277 | void fpu_check_signal_exception (SIM_DESC, sim_cpu *, address_word); |
| 278 | |
| 279 | extern const struct fp_prec_t |
| 280 | { |
| 281 | void (* reg2val) (const void *, sim_fpu *); |
| 282 | int (* round) (sim_fpu *); |
| 283 | void (* val2reg) (const sim_fpu *, void *); |
| 284 | } fp_single_prec, fp_double_prec; |
| 285 | |
| 286 | #define FP_SINGLE (&fp_single_prec) |
| 287 | #define FP_DOUBLE (&fp_double_prec) |
| 288 | |
| 289 | void fpu_rsqrt (SIM_DESC, sim_cpu *, address_word, const void *, void *, const struct fp_prec_t *); |
| 290 | void fpu_sqrt (SIM_DESC, sim_cpu *, address_word, const void *, void *, const struct fp_prec_t *); |
| 291 | void fpu_cmp (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const struct fp_prec_t *); |
| 292 | void fpu_add (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); |
| 293 | void fpu_sub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); |
| 294 | void fpu_mul (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); |
| 295 | void fpu_div (SIM_DESC, sim_cpu *, address_word, const void *, const void *, void *, const struct fp_prec_t *); |
| 296 | void fpu_fmadd (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); |
| 297 | void fpu_fmsub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); |
| 298 | void fpu_fnmadd (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); |
| 299 | void fpu_fnmsub (SIM_DESC, sim_cpu *, address_word, const void *, const void *, const void *, void *, const struct fp_prec_t *); |