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fdd6fa61 | 1 | /* Simulator for the moxie processor |
4a94e368 | 2 | Copyright (C) 2008-2022 Free Software Foundation, Inc. |
fdd6fa61 AG |
3 | Contributed by Anthony Green |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
6df01ab8 MF |
20 | /* This must come before any other includes. */ |
21 | #include "defs.h" | |
22 | ||
a6c2b87e | 23 | #include <fcntl.h> |
fdd6fa61 AG |
24 | #include <signal.h> |
25 | #include <stdlib.h> | |
dc049bf4 | 26 | #include <string.h> |
fdd6fa61 | 27 | #include <sys/param.h> |
dc049bf4 | 28 | #include <unistd.h> |
fdd6fa61 | 29 | #include "bfd.h" |
fdd6fa61 | 30 | #include "libiberty.h" |
df68e12b | 31 | #include "sim/sim.h" |
fdd6fa61 | 32 | |
5c27d164 AG |
33 | #include "sim-main.h" |
34 | #include "sim-base.h" | |
cc8ab1de | 35 | #include "sim-options.h" |
fb463341 | 36 | #include "sim-io.h" |
1fef66b0 | 37 | #include "sim-signal.h" |
e38330f8 | 38 | #include "target-newlib-syscall.h" |
5c27d164 | 39 | |
9da0101a MF |
40 | #include "moxie-sim.h" |
41 | ||
86566200 AG |
42 | /* Extract the signed 10-bit offset from a 16-bit branch |
43 | instruction. */ | |
44 | #define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1) | |
45 | ||
5c27d164 AG |
46 | #define EXTRACT_WORD(addr) \ |
47 | ((sim_core_read_aligned_1 (scpu, cia, read_map, addr) << 24) \ | |
48 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+1) << 16) \ | |
49 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+2) << 8) \ | |
50 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+3))) | |
fdd6fa61 | 51 | |
507411cc AG |
52 | #define EXTRACT_OFFSET(addr) \ |
53 | (unsigned int) \ | |
54 | (((signed short) \ | |
55 | ((sim_core_read_aligned_1 (scpu, cia, read_map, addr) << 8) \ | |
56 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+1))) << 16) >> 16) | |
57 | ||
1bf57e9a | 58 | static unsigned long |
ed60d3ed | 59 | moxie_extract_unsigned_integer (const unsigned char *addr, int len) |
fdd6fa61 AG |
60 | { |
61 | unsigned long retval; | |
62 | unsigned char * p; | |
63 | unsigned char * startaddr = (unsigned char *)addr; | |
64 | unsigned char * endaddr = startaddr + len; | |
65 | ||
66 | if (len > (int) sizeof (unsigned long)) | |
1bf57e9a | 67 | printf ("That operation is not available on integers of more than %zu bytes.", |
fdd6fa61 AG |
68 | sizeof (unsigned long)); |
69 | ||
70 | /* Start at the most significant end of the integer, and work towards | |
71 | the least significant. */ | |
72 | retval = 0; | |
73 | ||
74 | for (p = endaddr; p > startaddr;) | |
75 | retval = (retval << 8) | * -- p; | |
76 | ||
77 | return retval; | |
78 | } | |
79 | ||
1bf57e9a MF |
80 | static void |
81 | moxie_store_unsigned_integer (unsigned char *addr, int len, unsigned long val) | |
fdd6fa61 AG |
82 | { |
83 | unsigned char * p; | |
84 | unsigned char * startaddr = (unsigned char *)addr; | |
85 | unsigned char * endaddr = startaddr + len; | |
86 | ||
87 | for (p = endaddr; p > startaddr;) | |
88 | { | |
89 | * -- p = val & 0xff; | |
90 | val >>= 8; | |
91 | } | |
92 | } | |
93 | ||
94 | /* moxie register names. */ | |
95 | static const char *reg_names[16] = | |
96 | { "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5", | |
97 | "$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" }; | |
98 | ||
99 | /* The machine state. | |
100 | ||
101 | This state is maintained in host byte order. The fetch/store | |
102 | register functions must translate between host byte order and the | |
103 | target processor byte order. Keeping this data in target byte | |
104 | order simplifies the register read/write functions. Keeping this | |
105 | data in native order improves the performance of the simulator. | |
106 | Simulation speed is deemed more important. */ | |
107 | ||
108 | #define NUM_MOXIE_REGS 17 /* Including PC */ | |
109 | #define NUM_MOXIE_SREGS 256 /* The special registers */ | |
110 | #define PC_REGNO 16 | |
111 | ||
112 | /* The ordering of the moxie_regset structure is matched in the | |
113 | gdb/config/moxie/tm-moxie.h file in the REGISTER_NAMES macro. */ | |
cc8ab1de | 114 | /* TODO: This should be moved to sim-main.h:_sim_cpu. */ |
fdd6fa61 AG |
115 | struct moxie_regset |
116 | { | |
be2e4e65 MF |
117 | int32_t regs[NUM_MOXIE_REGS + 1]; /* primary registers */ |
118 | int32_t sregs[256]; /* special registers */ | |
119 | int32_t cc; /* the condition code reg */ | |
fdd6fa61 AG |
120 | unsigned long long insts; /* instruction counter */ |
121 | }; | |
122 | ||
123 | #define CC_GT 1<<0 | |
124 | #define CC_LT 1<<1 | |
125 | #define CC_EQ 1<<2 | |
126 | #define CC_GTU 1<<3 | |
127 | #define CC_LTU 1<<4 | |
128 | ||
778ef9bc | 129 | /* TODO: This should be moved to sim-main.h:moxie_sim_cpu. */ |
fdd6fa61 AG |
130 | union |
131 | { | |
132 | struct moxie_regset asregs; | |
be2e4e65 | 133 | int32_t asints [1]; /* but accessed larger... */ |
fdd6fa61 AG |
134 | } cpu; |
135 | ||
fdd6fa61 | 136 | static void |
cc8ab1de | 137 | set_initial_gprs (void) |
fdd6fa61 AG |
138 | { |
139 | int i; | |
140 | long space; | |
fdd6fa61 | 141 | |
fdd6fa61 AG |
142 | /* Set up machine just out of reset. */ |
143 | cpu.asregs.regs[PC_REGNO] = 0; | |
144 | ||
fdd6fa61 AG |
145 | /* Clean out the register contents. */ |
146 | for (i = 0; i < NUM_MOXIE_REGS; i++) | |
147 | cpu.asregs.regs[i] = 0; | |
148 | for (i = 0; i < NUM_MOXIE_SREGS; i++) | |
149 | cpu.asregs.sregs[i] = 0; | |
150 | } | |
151 | ||
fdd6fa61 AG |
152 | /* Write a 1 byte value to memory. */ |
153 | ||
1bf57e9a | 154 | static INLINE void |
be2e4e65 | 155 | wbat (sim_cpu *scpu, int32_t pc, int32_t x, int32_t v) |
fdd6fa61 | 156 | { |
034685f9 | 157 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
158 | |
159 | sim_core_write_aligned_1 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
160 | } |
161 | ||
162 | /* Write a 2 byte value to memory. */ | |
163 | ||
1bf57e9a | 164 | static INLINE void |
be2e4e65 | 165 | wsat (sim_cpu *scpu, int32_t pc, int32_t x, int32_t v) |
fdd6fa61 | 166 | { |
034685f9 | 167 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
168 | |
169 | sim_core_write_aligned_2 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
170 | } |
171 | ||
172 | /* Write a 4 byte value to memory. */ | |
173 | ||
1bf57e9a | 174 | static INLINE void |
be2e4e65 | 175 | wlat (sim_cpu *scpu, int32_t pc, int32_t x, int32_t v) |
fdd6fa61 | 176 | { |
034685f9 | 177 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
178 | |
179 | sim_core_write_aligned_4 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
180 | } |
181 | ||
182 | /* Read 2 bytes from memory. */ | |
183 | ||
1bf57e9a | 184 | static INLINE int |
be2e4e65 | 185 | rsat (sim_cpu *scpu, int32_t pc, int32_t x) |
fdd6fa61 | 186 | { |
034685f9 | 187 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
188 | |
189 | return (sim_core_read_aligned_2 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
190 | } |
191 | ||
192 | /* Read 1 byte from memory. */ | |
193 | ||
1bf57e9a | 194 | static INLINE int |
be2e4e65 | 195 | rbat (sim_cpu *scpu, int32_t pc, int32_t x) |
fdd6fa61 | 196 | { |
034685f9 | 197 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
198 | |
199 | return (sim_core_read_aligned_1 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
200 | } |
201 | ||
202 | /* Read 4 bytes from memory. */ | |
203 | ||
1bf57e9a | 204 | static INLINE int |
be2e4e65 | 205 | rlat (sim_cpu *scpu, int32_t pc, int32_t x) |
fdd6fa61 | 206 | { |
034685f9 | 207 | address_word cia = CPU_PC_GET (scpu); |
5c27d164 AG |
208 | |
209 | return (sim_core_read_aligned_4 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
210 | } |
211 | ||
212 | #define CHECK_FLAG(T,H) if (tflags & T) { hflags |= H; tflags ^= T; } | |
213 | ||
1bf57e9a | 214 | static unsigned int |
fdd6fa61 AG |
215 | convert_target_flags (unsigned int tflags) |
216 | { | |
217 | unsigned int hflags = 0x0; | |
218 | ||
219 | CHECK_FLAG(0x0001, O_WRONLY); | |
220 | CHECK_FLAG(0x0002, O_RDWR); | |
221 | CHECK_FLAG(0x0008, O_APPEND); | |
222 | CHECK_FLAG(0x0200, O_CREAT); | |
223 | CHECK_FLAG(0x0400, O_TRUNC); | |
224 | CHECK_FLAG(0x0800, O_EXCL); | |
225 | CHECK_FLAG(0x2000, O_SYNC); | |
226 | ||
227 | if (tflags != 0x0) | |
228 | fprintf (stderr, | |
229 | "Simulator Error: problem converting target open flags for host. 0x%x\n", | |
230 | tflags); | |
231 | ||
232 | return hflags; | |
233 | } | |
234 | ||
0054dcd7 MF |
235 | /* TODO: Split this up into finger trace levels than just insn. */ |
236 | #define MOXIE_TRACE_INSN(str) \ | |
237 | TRACE_INSN (scpu, "0x%08x, %s, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x", \ | |
238 | opc, str, cpu.asregs.regs[0], cpu.asregs.regs[1], \ | |
239 | cpu.asregs.regs[2], cpu.asregs.regs[3], cpu.asregs.regs[4], \ | |
240 | cpu.asregs.regs[5], cpu.asregs.regs[6], cpu.asregs.regs[7], \ | |
241 | cpu.asregs.regs[8], cpu.asregs.regs[9], cpu.asregs.regs[10], \ | |
242 | cpu.asregs.regs[11], cpu.asregs.regs[12], cpu.asregs.regs[13], \ | |
243 | cpu.asregs.regs[14], cpu.asregs.regs[15]) | |
fdd6fa61 | 244 | |
fdd6fa61 | 245 | void |
20cc9753 MF |
246 | sim_engine_run (SIM_DESC sd, |
247 | int next_cpu_nr, /* ignore */ | |
248 | int nr_cpus, /* ignore */ | |
249 | int siggnal) /* ignore */ | |
fdd6fa61 | 250 | { |
be2e4e65 | 251 | int32_t pc, opc; |
fdd6fa61 | 252 | unsigned short inst; |
5c27d164 | 253 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
034685f9 | 254 | address_word cia = CPU_PC_GET (scpu); |
fdd6fa61 | 255 | |
fdd6fa61 | 256 | pc = cpu.asregs.regs[PC_REGNO]; |
fdd6fa61 AG |
257 | |
258 | /* Run instructions here. */ | |
259 | do | |
260 | { | |
261 | opc = pc; | |
262 | ||
263 | /* Fetch the instruction at pc. */ | |
5c27d164 AG |
264 | inst = (sim_core_read_aligned_1 (scpu, cia, read_map, pc) << 8) |
265 | + sim_core_read_aligned_1 (scpu, cia, read_map, pc+1); | |
fdd6fa61 AG |
266 | |
267 | /* Decode instruction. */ | |
268 | if (inst & (1 << 15)) | |
269 | { | |
270 | if (inst & (1 << 14)) | |
271 | { | |
272 | /* This is a Form 3 instruction. */ | |
86566200 AG |
273 | int opcode = (inst >> 10 & 0xf); |
274 | ||
275 | switch (opcode) | |
276 | { | |
277 | case 0x00: /* beq */ | |
278 | { | |
53d2389f | 279 | MOXIE_TRACE_INSN ("beq"); |
86566200 | 280 | if (cpu.asregs.cc & CC_EQ) |
78ca4e81 | 281 | pc += INST2OFFSET(inst); |
86566200 AG |
282 | } |
283 | break; | |
284 | case 0x01: /* bne */ | |
285 | { | |
53d2389f | 286 | MOXIE_TRACE_INSN ("bne"); |
86566200 | 287 | if (! (cpu.asregs.cc & CC_EQ)) |
78ca4e81 | 288 | pc += INST2OFFSET(inst); |
86566200 AG |
289 | } |
290 | break; | |
291 | case 0x02: /* blt */ | |
292 | { | |
53d2389f | 293 | MOXIE_TRACE_INSN ("blt"); |
86566200 | 294 | if (cpu.asregs.cc & CC_LT) |
78ca4e81 | 295 | pc += INST2OFFSET(inst); |
86566200 AG |
296 | } break; |
297 | case 0x03: /* bgt */ | |
298 | { | |
53d2389f | 299 | MOXIE_TRACE_INSN ("bgt"); |
86566200 | 300 | if (cpu.asregs.cc & CC_GT) |
78ca4e81 | 301 | pc += INST2OFFSET(inst); |
86566200 AG |
302 | } |
303 | break; | |
304 | case 0x04: /* bltu */ | |
305 | { | |
53d2389f | 306 | MOXIE_TRACE_INSN ("bltu"); |
86566200 | 307 | if (cpu.asregs.cc & CC_LTU) |
78ca4e81 | 308 | pc += INST2OFFSET(inst); |
86566200 AG |
309 | } |
310 | break; | |
311 | case 0x05: /* bgtu */ | |
312 | { | |
53d2389f | 313 | MOXIE_TRACE_INSN ("bgtu"); |
86566200 | 314 | if (cpu.asregs.cc & CC_GTU) |
78ca4e81 | 315 | pc += INST2OFFSET(inst); |
86566200 AG |
316 | } |
317 | break; | |
318 | case 0x06: /* bge */ | |
319 | { | |
53d2389f | 320 | MOXIE_TRACE_INSN ("bge"); |
86566200 | 321 | if (cpu.asregs.cc & (CC_GT | CC_EQ)) |
78ca4e81 | 322 | pc += INST2OFFSET(inst); |
86566200 AG |
323 | } |
324 | break; | |
325 | case 0x07: /* ble */ | |
326 | { | |
53d2389f | 327 | MOXIE_TRACE_INSN ("ble"); |
86566200 | 328 | if (cpu.asregs.cc & (CC_LT | CC_EQ)) |
78ca4e81 | 329 | pc += INST2OFFSET(inst); |
86566200 AG |
330 | } |
331 | break; | |
332 | case 0x08: /* bgeu */ | |
333 | { | |
53d2389f | 334 | MOXIE_TRACE_INSN ("bgeu"); |
86566200 | 335 | if (cpu.asregs.cc & (CC_GTU | CC_EQ)) |
78ca4e81 | 336 | pc += INST2OFFSET(inst); |
86566200 AG |
337 | } |
338 | break; | |
339 | case 0x09: /* bleu */ | |
340 | { | |
53d2389f | 341 | MOXIE_TRACE_INSN ("bleu"); |
86566200 | 342 | if (cpu.asregs.cc & (CC_LTU | CC_EQ)) |
78ca4e81 | 343 | pc += INST2OFFSET(inst); |
86566200 AG |
344 | } |
345 | break; | |
346 | default: | |
347 | { | |
53d2389f | 348 | MOXIE_TRACE_INSN ("SIGILL3"); |
6c869779 | 349 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL); |
86566200 AG |
350 | break; |
351 | } | |
352 | } | |
fdd6fa61 AG |
353 | } |
354 | else | |
355 | { | |
356 | /* This is a Form 2 instruction. */ | |
357 | int opcode = (inst >> 12 & 0x3); | |
358 | switch (opcode) | |
359 | { | |
360 | case 0x00: /* inc */ | |
361 | { | |
362 | int a = (inst >> 8) & 0xf; | |
363 | unsigned av = cpu.asregs.regs[a]; | |
364 | unsigned v = (inst & 0xff); | |
3ba611c3 | 365 | |
53d2389f | 366 | MOXIE_TRACE_INSN ("inc"); |
fdd6fa61 AG |
367 | cpu.asregs.regs[a] = av + v; |
368 | } | |
369 | break; | |
370 | case 0x01: /* dec */ | |
371 | { | |
372 | int a = (inst >> 8) & 0xf; | |
373 | unsigned av = cpu.asregs.regs[a]; | |
374 | unsigned v = (inst & 0xff); | |
3ba611c3 | 375 | |
53d2389f | 376 | MOXIE_TRACE_INSN ("dec"); |
fdd6fa61 AG |
377 | cpu.asregs.regs[a] = av - v; |
378 | } | |
379 | break; | |
380 | case 0x02: /* gsr */ | |
381 | { | |
382 | int a = (inst >> 8) & 0xf; | |
383 | unsigned v = (inst & 0xff); | |
3ba611c3 | 384 | |
53d2389f | 385 | MOXIE_TRACE_INSN ("gsr"); |
fdd6fa61 AG |
386 | cpu.asregs.regs[a] = cpu.asregs.sregs[v]; |
387 | } | |
77176dfc | 388 | break; |
fdd6fa61 AG |
389 | case 0x03: /* ssr */ |
390 | { | |
391 | int a = (inst >> 8) & 0xf; | |
392 | unsigned v = (inst & 0xff); | |
3ba611c3 | 393 | |
53d2389f | 394 | MOXIE_TRACE_INSN ("ssr"); |
fdd6fa61 AG |
395 | cpu.asregs.sregs[v] = cpu.asregs.regs[a]; |
396 | } | |
77176dfc | 397 | break; |
fdd6fa61 | 398 | default: |
53d2389f | 399 | MOXIE_TRACE_INSN ("SIGILL2"); |
6c869779 | 400 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL); |
fdd6fa61 AG |
401 | break; |
402 | } | |
403 | } | |
404 | } | |
405 | else | |
406 | { | |
407 | /* This is a Form 1 instruction. */ | |
408 | int opcode = inst >> 8; | |
409 | switch (opcode) | |
410 | { | |
32d49b7b AG |
411 | case 0x00: /* bad */ |
412 | opc = opcode; | |
53d2389f | 413 | MOXIE_TRACE_INSN ("SIGILL0"); |
6c869779 | 414 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL); |
fdd6fa61 AG |
415 | break; |
416 | case 0x01: /* ldi.l (immediate) */ | |
417 | { | |
418 | int reg = (inst >> 4) & 0xf; | |
1bf57e9a | 419 | unsigned int val = EXTRACT_WORD(pc+2); |
3ba611c3 | 420 | |
53d2389f | 421 | MOXIE_TRACE_INSN ("ldi.l"); |
fdd6fa61 AG |
422 | cpu.asregs.regs[reg] = val; |
423 | pc += 4; | |
424 | } | |
425 | break; | |
426 | case 0x02: /* mov (register-to-register) */ | |
427 | { | |
428 | int dest = (inst >> 4) & 0xf; | |
429 | int src = (inst ) & 0xf; | |
3ba611c3 | 430 | |
53d2389f | 431 | MOXIE_TRACE_INSN ("mov"); |
fdd6fa61 AG |
432 | cpu.asregs.regs[dest] = cpu.asregs.regs[src]; |
433 | } | |
434 | break; | |
435 | case 0x03: /* jsra */ | |
436 | { | |
5c27d164 | 437 | unsigned int fn = EXTRACT_WORD(pc+2); |
fdd6fa61 | 438 | unsigned int sp = cpu.asregs.regs[1]; |
3ba611c3 | 439 | |
53d2389f | 440 | MOXIE_TRACE_INSN ("jsra"); |
fdd6fa61 AG |
441 | /* Save a slot for the static chain. */ |
442 | sp -= 4; | |
443 | ||
444 | /* Push the return address. */ | |
445 | sp -= 4; | |
5c27d164 | 446 | wlat (scpu, opc, sp, pc + 6); |
fdd6fa61 AG |
447 | |
448 | /* Push the current frame pointer. */ | |
449 | sp -= 4; | |
5c27d164 | 450 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
fdd6fa61 AG |
451 | |
452 | /* Uncache the stack pointer and set the pc and $fp. */ | |
453 | cpu.asregs.regs[1] = sp; | |
454 | cpu.asregs.regs[0] = sp; | |
455 | pc = fn - 2; | |
456 | } | |
457 | break; | |
458 | case 0x04: /* ret */ | |
459 | { | |
460 | unsigned int sp = cpu.asregs.regs[0]; | |
461 | ||
53d2389f | 462 | MOXIE_TRACE_INSN ("ret"); |
fdd6fa61 AG |
463 | |
464 | /* Pop the frame pointer. */ | |
5c27d164 | 465 | cpu.asregs.regs[0] = rlat (scpu, opc, sp); |
fdd6fa61 AG |
466 | sp += 4; |
467 | ||
468 | /* Pop the return address. */ | |
5c27d164 | 469 | pc = rlat (scpu, opc, sp) - 2; |
fdd6fa61 AG |
470 | sp += 4; |
471 | ||
472 | /* Skip over the static chain slot. */ | |
473 | sp += 4; | |
474 | ||
475 | /* Uncache the stack pointer. */ | |
476 | cpu.asregs.regs[1] = sp; | |
477 | } | |
478 | break; | |
479 | case 0x05: /* add.l */ | |
480 | { | |
481 | int a = (inst >> 4) & 0xf; | |
482 | int b = inst & 0xf; | |
483 | unsigned av = cpu.asregs.regs[a]; | |
484 | unsigned bv = cpu.asregs.regs[b]; | |
3ba611c3 | 485 | |
53d2389f | 486 | MOXIE_TRACE_INSN ("add.l"); |
fdd6fa61 AG |
487 | cpu.asregs.regs[a] = av + bv; |
488 | } | |
489 | break; | |
490 | case 0x06: /* push */ | |
491 | { | |
492 | int a = (inst >> 4) & 0xf; | |
493 | int b = inst & 0xf; | |
494 | int sp = cpu.asregs.regs[a] - 4; | |
3ba611c3 | 495 | |
53d2389f | 496 | MOXIE_TRACE_INSN ("push"); |
5c27d164 | 497 | wlat (scpu, opc, sp, cpu.asregs.regs[b]); |
fdd6fa61 AG |
498 | cpu.asregs.regs[a] = sp; |
499 | } | |
500 | break; | |
501 | case 0x07: /* pop */ | |
502 | { | |
503 | int a = (inst >> 4) & 0xf; | |
504 | int b = inst & 0xf; | |
505 | int sp = cpu.asregs.regs[a]; | |
3ba611c3 | 506 | |
53d2389f | 507 | MOXIE_TRACE_INSN ("pop"); |
5c27d164 | 508 | cpu.asregs.regs[b] = rlat (scpu, opc, sp); |
fdd6fa61 AG |
509 | cpu.asregs.regs[a] = sp + 4; |
510 | } | |
511 | break; | |
512 | case 0x08: /* lda.l */ | |
513 | { | |
514 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 515 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 516 | |
53d2389f | 517 | MOXIE_TRACE_INSN ("lda.l"); |
5c27d164 | 518 | cpu.asregs.regs[reg] = rlat (scpu, opc, addr); |
fdd6fa61 AG |
519 | pc += 4; |
520 | } | |
521 | break; | |
522 | case 0x09: /* sta.l */ | |
523 | { | |
524 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 525 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 526 | |
53d2389f | 527 | MOXIE_TRACE_INSN ("sta.l"); |
5c27d164 | 528 | wlat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
529 | pc += 4; |
530 | } | |
531 | break; | |
532 | case 0x0a: /* ld.l (register indirect) */ | |
533 | { | |
534 | int src = inst & 0xf; | |
535 | int dest = (inst >> 4) & 0xf; | |
536 | int xv; | |
3ba611c3 | 537 | |
53d2389f | 538 | MOXIE_TRACE_INSN ("ld.l"); |
fdd6fa61 | 539 | xv = cpu.asregs.regs[src]; |
5c27d164 | 540 | cpu.asregs.regs[dest] = rlat (scpu, opc, xv); |
fdd6fa61 AG |
541 | } |
542 | break; | |
543 | case 0x0b: /* st.l */ | |
544 | { | |
545 | int dest = (inst >> 4) & 0xf; | |
546 | int val = inst & 0xf; | |
3ba611c3 | 547 | |
53d2389f | 548 | MOXIE_TRACE_INSN ("st.l"); |
5c27d164 | 549 | wlat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
550 | } |
551 | break; | |
552 | case 0x0c: /* ldo.l */ | |
553 | { | |
507411cc | 554 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
555 | int a = (inst >> 4) & 0xf; |
556 | int b = inst & 0xf; | |
3ba611c3 | 557 | |
53d2389f | 558 | MOXIE_TRACE_INSN ("ldo.l"); |
fdd6fa61 | 559 | addr += cpu.asregs.regs[b]; |
5c27d164 | 560 | cpu.asregs.regs[a] = rlat (scpu, opc, addr); |
507411cc | 561 | pc += 2; |
fdd6fa61 AG |
562 | } |
563 | break; | |
564 | case 0x0d: /* sto.l */ | |
565 | { | |
507411cc | 566 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
567 | int a = (inst >> 4) & 0xf; |
568 | int b = inst & 0xf; | |
3ba611c3 | 569 | |
53d2389f | 570 | MOXIE_TRACE_INSN ("sto.l"); |
fdd6fa61 | 571 | addr += cpu.asregs.regs[a]; |
5c27d164 | 572 | wlat (scpu, opc, addr, cpu.asregs.regs[b]); |
507411cc | 573 | pc += 2; |
fdd6fa61 AG |
574 | } |
575 | break; | |
576 | case 0x0e: /* cmp */ | |
577 | { | |
578 | int a = (inst >> 4) & 0xf; | |
579 | int b = inst & 0xf; | |
580 | int cc = 0; | |
581 | int va = cpu.asregs.regs[a]; | |
582 | int vb = cpu.asregs.regs[b]; | |
583 | ||
53d2389f | 584 | MOXIE_TRACE_INSN ("cmp"); |
fdd6fa61 AG |
585 | if (va == vb) |
586 | cc = CC_EQ; | |
587 | else | |
588 | { | |
589 | cc |= (va < vb ? CC_LT : 0); | |
590 | cc |= (va > vb ? CC_GT : 0); | |
591 | cc |= ((unsigned int) va < (unsigned int) vb ? CC_LTU : 0); | |
592 | cc |= ((unsigned int) va > (unsigned int) vb ? CC_GTU : 0); | |
593 | } | |
594 | ||
595 | cpu.asregs.cc = cc; | |
596 | } | |
597 | break; | |
32d49b7b AG |
598 | case 0x0f: /* nop */ |
599 | break; | |
048ea174 AG |
600 | case 0x10: /* sex.b */ |
601 | { | |
602 | int a = (inst >> 4) & 0xf; | |
603 | int b = inst & 0xf; | |
604 | signed char bv = cpu.asregs.regs[b]; | |
3ba611c3 | 605 | |
53d2389f | 606 | MOXIE_TRACE_INSN ("sex.b"); |
048ea174 AG |
607 | cpu.asregs.regs[a] = (int) bv; |
608 | } | |
609 | break; | |
610 | case 0x11: /* sex.s */ | |
611 | { | |
612 | int a = (inst >> 4) & 0xf; | |
613 | int b = inst & 0xf; | |
614 | signed short bv = cpu.asregs.regs[b]; | |
3ba611c3 | 615 | |
53d2389f | 616 | MOXIE_TRACE_INSN ("sex.s"); |
048ea174 AG |
617 | cpu.asregs.regs[a] = (int) bv; |
618 | } | |
619 | break; | |
c784b115 AG |
620 | case 0x12: /* zex.b */ |
621 | { | |
622 | int a = (inst >> 4) & 0xf; | |
623 | int b = inst & 0xf; | |
624 | signed char bv = cpu.asregs.regs[b]; | |
3ba611c3 | 625 | |
53d2389f | 626 | MOXIE_TRACE_INSN ("zex.b"); |
c784b115 AG |
627 | cpu.asregs.regs[a] = (int) bv & 0xff; |
628 | } | |
629 | break; | |
630 | case 0x13: /* zex.s */ | |
631 | { | |
632 | int a = (inst >> 4) & 0xf; | |
633 | int b = inst & 0xf; | |
634 | signed short bv = cpu.asregs.regs[b]; | |
3ba611c3 | 635 | |
53d2389f | 636 | MOXIE_TRACE_INSN ("zex.s"); |
c784b115 AG |
637 | cpu.asregs.regs[a] = (int) bv & 0xffff; |
638 | } | |
639 | break; | |
507411cc | 640 | case 0x14: /* umul.x */ |
ed4fd7b7 AG |
641 | { |
642 | int a = (inst >> 4) & 0xf; | |
643 | int b = inst & 0xf; | |
644 | unsigned av = cpu.asregs.regs[a]; | |
645 | unsigned bv = cpu.asregs.regs[b]; | |
507411cc AG |
646 | unsigned long long r = |
647 | (unsigned long long) av * (unsigned long long) bv; | |
3ba611c3 | 648 | |
53d2389f | 649 | MOXIE_TRACE_INSN ("umul.x"); |
ed4fd7b7 AG |
650 | cpu.asregs.regs[a] = r >> 32; |
651 | } | |
652 | break; | |
507411cc | 653 | case 0x15: /* mul.x */ |
ed4fd7b7 AG |
654 | { |
655 | int a = (inst >> 4) & 0xf; | |
656 | int b = inst & 0xf; | |
657 | unsigned av = cpu.asregs.regs[a]; | |
658 | unsigned bv = cpu.asregs.regs[b]; | |
507411cc AG |
659 | signed long long r = |
660 | (signed long long) av * (signed long long) bv; | |
3ba611c3 | 661 | |
53d2389f | 662 | MOXIE_TRACE_INSN ("mul.x"); |
ed4fd7b7 AG |
663 | cpu.asregs.regs[a] = r >> 32; |
664 | } | |
665 | break; | |
32d49b7b AG |
666 | case 0x16: /* bad */ |
667 | case 0x17: /* bad */ | |
668 | case 0x18: /* bad */ | |
fdd6fa61 | 669 | { |
86566200 | 670 | opc = opcode; |
53d2389f | 671 | MOXIE_TRACE_INSN ("SIGILL0"); |
6c869779 | 672 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL); |
86566200 | 673 | break; |
fdd6fa61 | 674 | } |
fdd6fa61 AG |
675 | case 0x19: /* jsr */ |
676 | { | |
677 | unsigned int fn = cpu.asregs.regs[(inst >> 4) & 0xf]; | |
678 | unsigned int sp = cpu.asregs.regs[1]; | |
679 | ||
53d2389f | 680 | MOXIE_TRACE_INSN ("jsr"); |
fdd6fa61 AG |
681 | |
682 | /* Save a slot for the static chain. */ | |
683 | sp -= 4; | |
684 | ||
685 | /* Push the return address. */ | |
686 | sp -= 4; | |
5c27d164 | 687 | wlat (scpu, opc, sp, pc + 2); |
fdd6fa61 AG |
688 | |
689 | /* Push the current frame pointer. */ | |
690 | sp -= 4; | |
5c27d164 | 691 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
fdd6fa61 AG |
692 | |
693 | /* Uncache the stack pointer and set the fp & pc. */ | |
694 | cpu.asregs.regs[1] = sp; | |
695 | cpu.asregs.regs[0] = sp; | |
696 | pc = fn - 2; | |
697 | } | |
698 | break; | |
699 | case 0x1a: /* jmpa */ | |
700 | { | |
5c27d164 | 701 | unsigned int tgt = EXTRACT_WORD(pc+2); |
3ba611c3 | 702 | |
53d2389f | 703 | MOXIE_TRACE_INSN ("jmpa"); |
fdd6fa61 AG |
704 | pc = tgt - 2; |
705 | } | |
706 | break; | |
707 | case 0x1b: /* ldi.b (immediate) */ | |
708 | { | |
709 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 710 | unsigned int val = EXTRACT_WORD(pc+2); |
3ba611c3 | 711 | |
53d2389f | 712 | MOXIE_TRACE_INSN ("ldi.b"); |
fdd6fa61 AG |
713 | cpu.asregs.regs[reg] = val; |
714 | pc += 4; | |
715 | } | |
716 | break; | |
717 | case 0x1c: /* ld.b (register indirect) */ | |
718 | { | |
719 | int src = inst & 0xf; | |
720 | int dest = (inst >> 4) & 0xf; | |
721 | int xv; | |
3ba611c3 | 722 | |
53d2389f | 723 | MOXIE_TRACE_INSN ("ld.b"); |
fdd6fa61 | 724 | xv = cpu.asregs.regs[src]; |
5c27d164 | 725 | cpu.asregs.regs[dest] = rbat (scpu, opc, xv); |
fdd6fa61 AG |
726 | } |
727 | break; | |
728 | case 0x1d: /* lda.b */ | |
729 | { | |
730 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 731 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 732 | |
53d2389f | 733 | MOXIE_TRACE_INSN ("lda.b"); |
5c27d164 | 734 | cpu.asregs.regs[reg] = rbat (scpu, opc, addr); |
fdd6fa61 AG |
735 | pc += 4; |
736 | } | |
737 | break; | |
738 | case 0x1e: /* st.b */ | |
739 | { | |
740 | int dest = (inst >> 4) & 0xf; | |
741 | int val = inst & 0xf; | |
3ba611c3 | 742 | |
53d2389f | 743 | MOXIE_TRACE_INSN ("st.b"); |
5c27d164 | 744 | wbat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
745 | } |
746 | break; | |
747 | case 0x1f: /* sta.b */ | |
748 | { | |
749 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 750 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 751 | |
53d2389f | 752 | MOXIE_TRACE_INSN ("sta.b"); |
5c27d164 | 753 | wbat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
754 | pc += 4; |
755 | } | |
756 | break; | |
757 | case 0x20: /* ldi.s (immediate) */ | |
758 | { | |
759 | int reg = (inst >> 4) & 0xf; | |
760 | ||
5c27d164 | 761 | unsigned int val = EXTRACT_WORD(pc+2); |
3ba611c3 | 762 | |
53d2389f | 763 | MOXIE_TRACE_INSN ("ldi.s"); |
fdd6fa61 AG |
764 | cpu.asregs.regs[reg] = val; |
765 | pc += 4; | |
766 | } | |
767 | break; | |
768 | case 0x21: /* ld.s (register indirect) */ | |
769 | { | |
770 | int src = inst & 0xf; | |
771 | int dest = (inst >> 4) & 0xf; | |
772 | int xv; | |
3ba611c3 | 773 | |
53d2389f | 774 | MOXIE_TRACE_INSN ("ld.s"); |
fdd6fa61 | 775 | xv = cpu.asregs.regs[src]; |
5c27d164 | 776 | cpu.asregs.regs[dest] = rsat (scpu, opc, xv); |
fdd6fa61 AG |
777 | } |
778 | break; | |
779 | case 0x22: /* lda.s */ | |
780 | { | |
781 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 782 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 783 | |
53d2389f | 784 | MOXIE_TRACE_INSN ("lda.s"); |
5c27d164 | 785 | cpu.asregs.regs[reg] = rsat (scpu, opc, addr); |
fdd6fa61 AG |
786 | pc += 4; |
787 | } | |
788 | break; | |
789 | case 0x23: /* st.s */ | |
790 | { | |
791 | int dest = (inst >> 4) & 0xf; | |
792 | int val = inst & 0xf; | |
3ba611c3 | 793 | |
53d2389f | 794 | MOXIE_TRACE_INSN ("st.s"); |
5c27d164 | 795 | wsat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
796 | } |
797 | break; | |
798 | case 0x24: /* sta.s */ | |
799 | { | |
800 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 801 | unsigned int addr = EXTRACT_WORD(pc+2); |
3ba611c3 | 802 | |
53d2389f | 803 | MOXIE_TRACE_INSN ("sta.s"); |
5c27d164 | 804 | wsat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
805 | pc += 4; |
806 | } | |
807 | break; | |
808 | case 0x25: /* jmp */ | |
809 | { | |
810 | int reg = (inst >> 4) & 0xf; | |
3ba611c3 | 811 | |
53d2389f | 812 | MOXIE_TRACE_INSN ("jmp"); |
fdd6fa61 AG |
813 | pc = cpu.asregs.regs[reg] - 2; |
814 | } | |
815 | break; | |
816 | case 0x26: /* and */ | |
817 | { | |
818 | int a = (inst >> 4) & 0xf; | |
819 | int b = inst & 0xf; | |
820 | int av, bv; | |
3ba611c3 | 821 | |
53d2389f | 822 | MOXIE_TRACE_INSN ("and"); |
fdd6fa61 AG |
823 | av = cpu.asregs.regs[a]; |
824 | bv = cpu.asregs.regs[b]; | |
825 | cpu.asregs.regs[a] = av & bv; | |
826 | } | |
827 | break; | |
828 | case 0x27: /* lshr */ | |
829 | { | |
830 | int a = (inst >> 4) & 0xf; | |
831 | int b = inst & 0xf; | |
832 | int av = cpu.asregs.regs[a]; | |
833 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 834 | |
53d2389f | 835 | MOXIE_TRACE_INSN ("lshr"); |
fdd6fa61 AG |
836 | cpu.asregs.regs[a] = (unsigned) ((unsigned) av >> bv); |
837 | } | |
838 | break; | |
839 | case 0x28: /* ashl */ | |
840 | { | |
841 | int a = (inst >> 4) & 0xf; | |
842 | int b = inst & 0xf; | |
843 | int av = cpu.asregs.regs[a]; | |
844 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 845 | |
53d2389f | 846 | MOXIE_TRACE_INSN ("ashl"); |
fdd6fa61 AG |
847 | cpu.asregs.regs[a] = av << bv; |
848 | } | |
849 | break; | |
850 | case 0x29: /* sub.l */ | |
851 | { | |
852 | int a = (inst >> 4) & 0xf; | |
853 | int b = inst & 0xf; | |
854 | unsigned av = cpu.asregs.regs[a]; | |
855 | unsigned bv = cpu.asregs.regs[b]; | |
3ba611c3 | 856 | |
53d2389f | 857 | MOXIE_TRACE_INSN ("sub.l"); |
fdd6fa61 AG |
858 | cpu.asregs.regs[a] = av - bv; |
859 | } | |
860 | break; | |
861 | case 0x2a: /* neg */ | |
862 | { | |
863 | int a = (inst >> 4) & 0xf; | |
864 | int b = inst & 0xf; | |
865 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 866 | |
53d2389f | 867 | MOXIE_TRACE_INSN ("neg"); |
fdd6fa61 AG |
868 | cpu.asregs.regs[a] = - bv; |
869 | } | |
870 | break; | |
871 | case 0x2b: /* or */ | |
872 | { | |
873 | int a = (inst >> 4) & 0xf; | |
874 | int b = inst & 0xf; | |
875 | int av, bv; | |
3ba611c3 | 876 | |
53d2389f | 877 | MOXIE_TRACE_INSN ("or"); |
fdd6fa61 AG |
878 | av = cpu.asregs.regs[a]; |
879 | bv = cpu.asregs.regs[b]; | |
880 | cpu.asregs.regs[a] = av | bv; | |
881 | } | |
882 | break; | |
883 | case 0x2c: /* not */ | |
884 | { | |
885 | int a = (inst >> 4) & 0xf; | |
886 | int b = inst & 0xf; | |
887 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 888 | |
53d2389f | 889 | MOXIE_TRACE_INSN ("not"); |
fdd6fa61 AG |
890 | cpu.asregs.regs[a] = 0xffffffff ^ bv; |
891 | } | |
892 | break; | |
893 | case 0x2d: /* ashr */ | |
894 | { | |
895 | int a = (inst >> 4) & 0xf; | |
896 | int b = inst & 0xf; | |
897 | int av = cpu.asregs.regs[a]; | |
898 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 899 | |
53d2389f | 900 | MOXIE_TRACE_INSN ("ashr"); |
fdd6fa61 AG |
901 | cpu.asregs.regs[a] = av >> bv; |
902 | } | |
903 | break; | |
904 | case 0x2e: /* xor */ | |
905 | { | |
906 | int a = (inst >> 4) & 0xf; | |
907 | int b = inst & 0xf; | |
908 | int av, bv; | |
3ba611c3 | 909 | |
53d2389f | 910 | MOXIE_TRACE_INSN ("xor"); |
fdd6fa61 AG |
911 | av = cpu.asregs.regs[a]; |
912 | bv = cpu.asregs.regs[b]; | |
913 | cpu.asregs.regs[a] = av ^ bv; | |
914 | } | |
915 | break; | |
916 | case 0x2f: /* mul.l */ | |
917 | { | |
918 | int a = (inst >> 4) & 0xf; | |
919 | int b = inst & 0xf; | |
920 | unsigned av = cpu.asregs.regs[a]; | |
921 | unsigned bv = cpu.asregs.regs[b]; | |
3ba611c3 | 922 | |
53d2389f | 923 | MOXIE_TRACE_INSN ("mul.l"); |
fdd6fa61 AG |
924 | cpu.asregs.regs[a] = av * bv; |
925 | } | |
926 | break; | |
927 | case 0x30: /* swi */ | |
928 | { | |
5c27d164 | 929 | unsigned int inum = EXTRACT_WORD(pc+2); |
3ba611c3 | 930 | |
53d2389f | 931 | MOXIE_TRACE_INSN ("swi"); |
5c27d164 AG |
932 | /* Set the special registers appropriately. */ |
933 | cpu.asregs.sregs[2] = 3; /* MOXIE_EX_SWI */ | |
934 | cpu.asregs.sregs[3] = inum; | |
fdd6fa61 AG |
935 | switch (inum) |
936 | { | |
e38330f8 | 937 | case TARGET_NEWLIB_SYS_exit: |
fdd6fa61 | 938 | { |
6c869779 | 939 | sim_engine_halt (sd, scpu, NULL, pc, sim_exited, |
20cc9753 | 940 | cpu.asregs.regs[2]); |
fdd6fa61 AG |
941 | break; |
942 | } | |
e38330f8 | 943 | case TARGET_NEWLIB_SYS_open: |
fdd6fa61 | 944 | { |
5c27d164 | 945 | char fname[1024]; |
fdd6fa61 | 946 | int mode = (int) convert_target_flags ((unsigned) cpu.asregs.regs[3]); |
7a321525 | 947 | int perm = (int) cpu.asregs.regs[4]; |
fb463341 | 948 | int fd; |
5c27d164 AG |
949 | sim_core_read_buffer (sd, scpu, read_map, fname, |
950 | cpu.asregs.regs[2], 1024); | |
fb463341 | 951 | fd = sim_io_open (sd, fname, mode); |
fdd6fa61 AG |
952 | /* FIXME - set errno */ |
953 | cpu.asregs.regs[2] = fd; | |
954 | break; | |
955 | } | |
e38330f8 | 956 | case TARGET_NEWLIB_SYS_read: |
fdd6fa61 AG |
957 | { |
958 | int fd = cpu.asregs.regs[2]; | |
7a321525 | 959 | unsigned len = (unsigned) cpu.asregs.regs[4]; |
5c27d164 | 960 | char *buf = malloc (len); |
fb463341 | 961 | cpu.asregs.regs[2] = sim_io_read (sd, fd, buf, len); |
5c27d164 AG |
962 | sim_core_write_buffer (sd, scpu, write_map, buf, |
963 | cpu.asregs.regs[3], len); | |
964 | free (buf); | |
fdd6fa61 AG |
965 | break; |
966 | } | |
e38330f8 | 967 | case TARGET_NEWLIB_SYS_write: |
fdd6fa61 | 968 | { |
5c27d164 | 969 | char *str; |
fdd6fa61 | 970 | /* String length is at 0x12($fp) */ |
7a321525 | 971 | unsigned count, len = (unsigned) cpu.asregs.regs[4]; |
5c27d164 AG |
972 | str = malloc (len); |
973 | sim_core_read_buffer (sd, scpu, read_map, str, | |
974 | cpu.asregs.regs[3], len); | |
fb463341 | 975 | count = sim_io_write (sd, cpu.asregs.regs[2], str, len); |
5c27d164 | 976 | free (str); |
fdd6fa61 AG |
977 | cpu.asregs.regs[2] = count; |
978 | break; | |
979 | } | |
e38330f8 | 980 | case TARGET_NEWLIB_SYS_unlink: |
fb463341 AG |
981 | { |
982 | char fname[1024]; | |
983 | int fd; | |
984 | sim_core_read_buffer (sd, scpu, read_map, fname, | |
985 | cpu.asregs.regs[2], 1024); | |
986 | fd = sim_io_unlink (sd, fname); | |
987 | /* FIXME - set errno */ | |
988 | cpu.asregs.regs[2] = fd; | |
989 | break; | |
990 | } | |
7a321525 AG |
991 | case 0xffffffff: /* Linux System Call */ |
992 | { | |
993 | unsigned int handler = cpu.asregs.sregs[1]; | |
994 | unsigned int sp = cpu.asregs.regs[1]; | |
7a321525 AG |
995 | |
996 | /* Save a slot for the static chain. */ | |
997 | sp -= 4; | |
998 | ||
999 | /* Push the return address. */ | |
1000 | sp -= 4; | |
5c27d164 | 1001 | wlat (scpu, opc, sp, pc + 6); |
7a321525 AG |
1002 | |
1003 | /* Push the current frame pointer. */ | |
1004 | sp -= 4; | |
5c27d164 | 1005 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
7a321525 AG |
1006 | |
1007 | /* Uncache the stack pointer and set the fp & pc. */ | |
1008 | cpu.asregs.regs[1] = sp; | |
1009 | cpu.asregs.regs[0] = sp; | |
1010 | pc = handler - 6; | |
1011 | } | |
fdd6fa61 AG |
1012 | default: |
1013 | break; | |
1014 | } | |
1015 | pc += 4; | |
1016 | } | |
1017 | break; | |
1018 | case 0x31: /* div.l */ | |
1019 | { | |
1020 | int a = (inst >> 4) & 0xf; | |
1021 | int b = inst & 0xf; | |
1022 | int av = cpu.asregs.regs[a]; | |
1023 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 1024 | |
53d2389f | 1025 | MOXIE_TRACE_INSN ("div.l"); |
fdd6fa61 AG |
1026 | cpu.asregs.regs[a] = av / bv; |
1027 | } | |
1028 | break; | |
1029 | case 0x32: /* udiv.l */ | |
1030 | { | |
1031 | int a = (inst >> 4) & 0xf; | |
1032 | int b = inst & 0xf; | |
1033 | unsigned int av = cpu.asregs.regs[a]; | |
1034 | unsigned int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 1035 | |
53d2389f | 1036 | MOXIE_TRACE_INSN ("udiv.l"); |
fdd6fa61 AG |
1037 | cpu.asregs.regs[a] = (av / bv); |
1038 | } | |
1039 | break; | |
1040 | case 0x33: /* mod.l */ | |
1041 | { | |
1042 | int a = (inst >> 4) & 0xf; | |
1043 | int b = inst & 0xf; | |
1044 | int av = cpu.asregs.regs[a]; | |
1045 | int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 1046 | |
53d2389f | 1047 | MOXIE_TRACE_INSN ("mod.l"); |
fdd6fa61 AG |
1048 | cpu.asregs.regs[a] = av % bv; |
1049 | } | |
1050 | break; | |
1051 | case 0x34: /* umod.l */ | |
1052 | { | |
1053 | int a = (inst >> 4) & 0xf; | |
1054 | int b = inst & 0xf; | |
1055 | unsigned int av = cpu.asregs.regs[a]; | |
1056 | unsigned int bv = cpu.asregs.regs[b]; | |
3ba611c3 | 1057 | |
53d2389f | 1058 | MOXIE_TRACE_INSN ("umod.l"); |
fdd6fa61 AG |
1059 | cpu.asregs.regs[a] = (av % bv); |
1060 | } | |
1061 | break; | |
1062 | case 0x35: /* brk */ | |
53d2389f | 1063 | MOXIE_TRACE_INSN ("brk"); |
6c869779 | 1064 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGTRAP); |
fdd6fa61 AG |
1065 | pc -= 2; /* Adjust pc */ |
1066 | break; | |
1067 | case 0x36: /* ldo.b */ | |
1068 | { | |
507411cc | 1069 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
1070 | int a = (inst >> 4) & 0xf; |
1071 | int b = inst & 0xf; | |
3ba611c3 | 1072 | |
53d2389f | 1073 | MOXIE_TRACE_INSN ("ldo.b"); |
fdd6fa61 | 1074 | addr += cpu.asregs.regs[b]; |
5c27d164 | 1075 | cpu.asregs.regs[a] = rbat (scpu, opc, addr); |
507411cc | 1076 | pc += 2; |
fdd6fa61 AG |
1077 | } |
1078 | break; | |
1079 | case 0x37: /* sto.b */ | |
1080 | { | |
507411cc | 1081 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
1082 | int a = (inst >> 4) & 0xf; |
1083 | int b = inst & 0xf; | |
3ba611c3 | 1084 | |
53d2389f | 1085 | MOXIE_TRACE_INSN ("sto.b"); |
fdd6fa61 | 1086 | addr += cpu.asregs.regs[a]; |
5c27d164 | 1087 | wbat (scpu, opc, addr, cpu.asregs.regs[b]); |
507411cc | 1088 | pc += 2; |
fdd6fa61 AG |
1089 | } |
1090 | break; | |
1091 | case 0x38: /* ldo.s */ | |
1092 | { | |
507411cc | 1093 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
1094 | int a = (inst >> 4) & 0xf; |
1095 | int b = inst & 0xf; | |
3ba611c3 | 1096 | |
53d2389f | 1097 | MOXIE_TRACE_INSN ("ldo.s"); |
fdd6fa61 | 1098 | addr += cpu.asregs.regs[b]; |
5c27d164 | 1099 | cpu.asregs.regs[a] = rsat (scpu, opc, addr); |
507411cc | 1100 | pc += 2; |
fdd6fa61 AG |
1101 | } |
1102 | break; | |
1103 | case 0x39: /* sto.s */ | |
1104 | { | |
507411cc | 1105 | unsigned int addr = EXTRACT_OFFSET(pc+2); |
fdd6fa61 AG |
1106 | int a = (inst >> 4) & 0xf; |
1107 | int b = inst & 0xf; | |
3ba611c3 | 1108 | |
53d2389f | 1109 | MOXIE_TRACE_INSN ("sto.s"); |
fdd6fa61 | 1110 | addr += cpu.asregs.regs[a]; |
5c27d164 | 1111 | wsat (scpu, opc, addr, cpu.asregs.regs[b]); |
507411cc | 1112 | pc += 2; |
fdd6fa61 AG |
1113 | } |
1114 | break; | |
1115 | default: | |
1116 | opc = opcode; | |
53d2389f | 1117 | MOXIE_TRACE_INSN ("SIGILL1"); |
6c869779 | 1118 | sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL); |
fdd6fa61 AG |
1119 | break; |
1120 | } | |
1121 | } | |
1122 | ||
20cc9753 | 1123 | cpu.asregs.insts++; |
fdd6fa61 | 1124 | pc += 2; |
20cc9753 | 1125 | cpu.asregs.regs[PC_REGNO] = pc; |
6c869779 AG |
1126 | |
1127 | if (sim_events_tick (sd)) | |
1128 | sim_events_process (sd); | |
1129 | ||
20cc9753 | 1130 | } while (1); |
fdd6fa61 AG |
1131 | } |
1132 | ||
e1211e55 | 1133 | static int |
ee1cffd3 | 1134 | moxie_reg_store (SIM_CPU *scpu, int rn, const void *memory, int length) |
fdd6fa61 | 1135 | { |
fdd6fa61 AG |
1136 | if (rn < NUM_MOXIE_REGS && rn >= 0) |
1137 | { | |
1138 | if (length == 4) | |
1139 | { | |
1140 | long ival; | |
1141 | ||
1142 | /* misalignment safe */ | |
1143 | ival = moxie_extract_unsigned_integer (memory, 4); | |
1144 | cpu.asints[rn] = ival; | |
1145 | } | |
1146 | ||
1147 | return 4; | |
1148 | } | |
1149 | else | |
1150 | return 0; | |
1151 | } | |
1152 | ||
e1211e55 | 1153 | static int |
ee1cffd3 | 1154 | moxie_reg_fetch (SIM_CPU *scpu, int rn, void *memory, int length) |
fdd6fa61 | 1155 | { |
fdd6fa61 AG |
1156 | if (rn < NUM_MOXIE_REGS && rn >= 0) |
1157 | { | |
1158 | if (length == 4) | |
1159 | { | |
1160 | long ival = cpu.asints[rn]; | |
1161 | ||
1162 | /* misalignment-safe */ | |
1163 | moxie_store_unsigned_integer (memory, 4, ival); | |
1164 | } | |
1165 | ||
1166 | return 4; | |
1167 | } | |
1168 | else | |
1169 | return 0; | |
1170 | } | |
1171 | ||
4c0cab1e MF |
1172 | static sim_cia |
1173 | moxie_pc_get (sim_cpu *cpu) | |
1174 | { | |
778ef9bc | 1175 | return MOXIE_SIM_CPU (cpu)->registers[PCIDX]; |
4c0cab1e MF |
1176 | } |
1177 | ||
1178 | static void | |
1179 | moxie_pc_set (sim_cpu *cpu, sim_cia pc) | |
1180 | { | |
778ef9bc | 1181 | MOXIE_SIM_CPU (cpu)->registers[PCIDX] = pc; |
4c0cab1e MF |
1182 | } |
1183 | ||
cc8ab1de MF |
1184 | static void |
1185 | free_state (SIM_DESC sd) | |
fdd6fa61 | 1186 | { |
cc8ab1de MF |
1187 | if (STATE_MODULES (sd) != NULL) |
1188 | sim_module_uninstall (sd); | |
1189 | sim_cpu_free_all (sd); | |
1190 | sim_state_free (sd); | |
fdd6fa61 AG |
1191 | } |
1192 | ||
fdd6fa61 | 1193 | SIM_DESC |
2e3d4f4d MF |
1194 | sim_open (SIM_OPEN_KIND kind, host_callback *cb, |
1195 | struct bfd *abfd, char * const *argv) | |
fdd6fa61 | 1196 | { |
4c0cab1e | 1197 | int i; |
5c27d164 | 1198 | SIM_DESC sd = sim_state_alloc (kind, cb); |
5c27d164 AG |
1199 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
1200 | ||
f9a4d543 MF |
1201 | /* Set default options before parsing user options. */ |
1202 | current_target_byte_order = BFD_ENDIAN_BIG; | |
1203 | ||
cc8ab1de | 1204 | /* The cpu data is kept in a separately allocated chunk of memory. */ |
883be197 | 1205 | if (sim_cpu_alloc_all_extra (sd, 0, sizeof (struct moxie_sim_cpu)) |
778ef9bc | 1206 | != SIM_RC_OK) |
cc8ab1de MF |
1207 | { |
1208 | free_state (sd); | |
1209 | return 0; | |
1210 | } | |
1211 | ||
5c27d164 | 1212 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
cc8ab1de MF |
1213 | { |
1214 | free_state (sd); | |
1215 | return 0; | |
1216 | } | |
1217 | ||
77cf2ef5 | 1218 | /* The parser will print an error message for us, so we silently return. */ |
cc8ab1de MF |
1219 | if (sim_parse_args (sd, argv) != SIM_RC_OK) |
1220 | { | |
1221 | free_state (sd); | |
1222 | return 0; | |
1223 | } | |
5c27d164 AG |
1224 | |
1225 | sim_do_command(sd," memory region 0x00000000,0x4000000") ; | |
1226 | sim_do_command(sd," memory region 0xE0000000,0x10000") ; | |
1227 | ||
cc8ab1de | 1228 | /* Check for/establish the a reference program image. */ |
e8f20a28 | 1229 | if (sim_analyze_program (sd, STATE_PROG_FILE (sd), abfd) != SIM_RC_OK) |
cc8ab1de MF |
1230 | { |
1231 | free_state (sd); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
b8dcd182 | 1235 | /* Configure/verify the target byte order and other runtime |
11db68fd | 1236 | configuration options. */ |
b8dcd182 AG |
1237 | if (sim_config (sd) != SIM_RC_OK) |
1238 | { | |
1239 | sim_module_uninstall (sd); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
1244 | { | |
1245 | /* Uninstall the modules to avoid memory leaks, | |
1246 | file descriptor leaks, etc. */ | |
1247 | sim_module_uninstall (sd); | |
1248 | return 0; | |
1249 | } | |
1250 | ||
cc8ab1de | 1251 | /* CPU specific initialization. */ |
4c0cab1e MF |
1252 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) |
1253 | { | |
1254 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
1255 | ||
e1211e55 MF |
1256 | CPU_REG_FETCH (cpu) = moxie_reg_fetch; |
1257 | CPU_REG_STORE (cpu) = moxie_reg_store; | |
4c0cab1e MF |
1258 | CPU_PC_FETCH (cpu) = moxie_pc_get; |
1259 | CPU_PC_STORE (cpu) = moxie_pc_set; | |
1260 | ||
1261 | set_initial_gprs (); /* Reset the GPR registers. */ | |
1262 | } | |
cc8ab1de | 1263 | |
5c27d164 | 1264 | return sd; |
fdd6fa61 AG |
1265 | } |
1266 | ||
5c27d164 AG |
1267 | /* Load the device tree blob. */ |
1268 | ||
1269 | static void | |
1270 | load_dtb (SIM_DESC sd, const char *filename) | |
1271 | { | |
1272 | int size = 0; | |
1273 | FILE *f = fopen (filename, "rb"); | |
1274 | char *buf; | |
1275 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ | |
20cc9753 MF |
1276 | |
1277 | /* Don't warn as the sim works fine w/out a device tree. */ | |
1278 | if (f == NULL) | |
1279 | return; | |
5c27d164 AG |
1280 | fseek (f, 0, SEEK_END); |
1281 | size = ftell(f); | |
1282 | fseek (f, 0, SEEK_SET); | |
1283 | buf = alloca (size); | |
1284 | if (size != fread (buf, 1, size, f)) | |
1285 | { | |
20cc9753 | 1286 | sim_io_eprintf (sd, "ERROR: error reading ``%s''.\n", filename); |
7d8a636c | 1287 | fclose (f); |
5c27d164 AG |
1288 | return; |
1289 | } | |
1290 | sim_core_write_buffer (sd, scpu, write_map, buf, 0xE0000000, size); | |
1291 | cpu.asregs.sregs[9] = 0xE0000000; | |
1292 | fclose (f); | |
1293 | } | |
1294 | ||
fdd6fa61 | 1295 | SIM_RC |
2e3d4f4d MF |
1296 | sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd, |
1297 | char * const *argv, char * const *env) | |
fdd6fa61 | 1298 | { |
3c811346 | 1299 | char * const *avp; |
fdd6fa61 | 1300 | int l, argc, i, tp; |
5c27d164 | 1301 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
fdd6fa61 | 1302 | |
bc56c8fa JK |
1303 | if (prog_bfd != NULL) |
1304 | cpu.asregs.regs[PC_REGNO] = bfd_get_start_address (prog_bfd); | |
fdd6fa61 AG |
1305 | |
1306 | /* Copy args into target memory. */ | |
1307 | avp = argv; | |
bc56c8fa | 1308 | for (argc = 0; avp && *avp; avp++) |
fdd6fa61 AG |
1309 | argc++; |
1310 | ||
1311 | /* Target memory looks like this: | |
1312 | 0x00000000 zero word | |
1313 | 0x00000004 argc word | |
1314 | 0x00000008 start of argv | |
1315 | . | |
1316 | 0x0000???? end of argv | |
1317 | 0x0000???? zero word | |
1318 | 0x0000???? start of data pointed to by argv */ | |
1319 | ||
5c27d164 AG |
1320 | wlat (scpu, 0, 0, 0); |
1321 | wlat (scpu, 0, 4, argc); | |
fdd6fa61 AG |
1322 | |
1323 | /* tp is the offset of our first argv data. */ | |
1324 | tp = 4 + 4 + argc * 4 + 4; | |
1325 | ||
1326 | for (i = 0; i < argc; i++) | |
1327 | { | |
1328 | /* Set the argv value. */ | |
5c27d164 | 1329 | wlat (scpu, 0, 4 + 4 + i * 4, tp); |
fdd6fa61 AG |
1330 | |
1331 | /* Store the string. */ | |
5c27d164 AG |
1332 | sim_core_write_buffer (sd, scpu, write_map, argv[i], |
1333 | tp, strlen(argv[i])+1); | |
fdd6fa61 AG |
1334 | tp += strlen (argv[i]) + 1; |
1335 | } | |
1336 | ||
5c27d164 AG |
1337 | wlat (scpu, 0, 4 + 4 + i * 4, 0); |
1338 | ||
1339 | load_dtb (sd, DTB); | |
fdd6fa61 AG |
1340 | |
1341 | return SIM_RC_OK; | |
1342 | } |