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e23eba97 | 1 | /* RISC-V disassembler |
a2c58332 | 2 | Copyright (C) 2011-2022 Free Software Foundation, Inc. |
e23eba97 NC |
3 | |
4 | Contributed by Andrew Waterman (andrew@sifive.com). | |
5 | Based on MIPS target. | |
6 | ||
7 | This file is part of the GNU opcodes library. | |
8 | ||
9 | This library is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3, or (at your option) | |
12 | any later version. | |
13 | ||
14 | It is distributed in the hope that it will be useful, but WITHOUT | |
15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
16 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
17 | License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; see the file COPYING3. If not, | |
21 | see <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "sysdep.h" | |
88c1242d | 24 | #include "disassemble.h" |
e23eba97 NC |
25 | #include "libiberty.h" |
26 | #include "opcode/riscv.h" | |
27 | #include "opintl.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "elf/riscv.h" | |
f786c359 | 30 | #include "elfxx-riscv.h" |
e23eba97 | 31 | |
3dfb1b6d | 32 | #include <stdint.h> |
e23eba97 NC |
33 | #include <ctype.h> |
34 | ||
f786c359 | 35 | static enum riscv_spec_class default_isa_spec = ISA_SPEC_CLASS_DRAFT - 1; |
3d73d29e | 36 | static enum riscv_spec_class default_priv_spec = PRIV_SPEC_CLASS_NONE; |
8f595e9b | 37 | |
f786c359 NC |
38 | unsigned xlen = 0; |
39 | ||
40 | static riscv_subset_list_t riscv_subsets; | |
41 | static riscv_parse_subset_t riscv_rps_dis = | |
42 | { | |
43 | &riscv_subsets, /* subset_list. */ | |
44 | opcodes_error_handler,/* error_handler. */ | |
45 | &xlen, /* xlen. */ | |
46 | &default_isa_spec, /* isa_spec. */ | |
47 | false, /* check_unknown_prefixed_ext. */ | |
48 | }; | |
49 | ||
e23eba97 NC |
50 | struct riscv_private_data |
51 | { | |
52 | bfd_vma gp; | |
53 | bfd_vma print_addr; | |
54 | bfd_vma hi_addr[OP_MASK_RD + 1]; | |
8fe1be5f TO |
55 | bool to_print_addr; |
56 | bool has_gp; | |
e23eba97 NC |
57 | }; |
58 | ||
9b9b1092 NC |
59 | /* Used for mapping symbols. */ |
60 | static int last_map_symbol = -1; | |
61 | static bfd_vma last_stop_offset = 0; | |
62 | enum riscv_seg_mstate last_map_state; | |
63 | ||
e23eba97 NC |
64 | static const char * const *riscv_gpr_names; |
65 | static const char * const *riscv_fpr_names; | |
66 | ||
dcd709e0 NC |
67 | /* If set, disassemble as most general instruction. */ |
68 | static int no_aliases; | |
e23eba97 NC |
69 | |
70 | static void | |
71 | set_default_riscv_dis_options (void) | |
72 | { | |
73 | riscv_gpr_names = riscv_gpr_names_abi; | |
74 | riscv_fpr_names = riscv_fpr_names_abi; | |
75 | no_aliases = 0; | |
76 | } | |
77 | ||
78933a4a | 78 | static bool |
8f595e9b | 79 | parse_riscv_dis_option_without_args (const char *option) |
e23eba97 NC |
80 | { |
81 | if (strcmp (option, "no-aliases") == 0) | |
82 | no_aliases = 1; | |
83 | else if (strcmp (option, "numeric") == 0) | |
84 | { | |
85 | riscv_gpr_names = riscv_gpr_names_numeric; | |
86 | riscv_fpr_names = riscv_fpr_names_numeric; | |
87 | } | |
8f595e9b | 88 | else |
78933a4a AM |
89 | return false; |
90 | return true; | |
8f595e9b NC |
91 | } |
92 | ||
93 | static void | |
94 | parse_riscv_dis_option (const char *option) | |
95 | { | |
96 | char *equal, *value; | |
97 | ||
98 | if (parse_riscv_dis_option_without_args (option)) | |
99 | return; | |
100 | ||
101 | equal = strchr (option, '='); | |
102 | if (equal == NULL) | |
103 | { | |
104 | /* The option without '=' should be defined above. */ | |
105 | opcodes_error_handler (_("unrecognized disassembler option: %s"), option); | |
106 | return; | |
107 | } | |
108 | if (equal == option | |
109 | || *(equal + 1) == '\0') | |
110 | { | |
111 | /* Invalid options with '=', no option name before '=', | |
112 | and no value after '='. */ | |
113 | opcodes_error_handler (_("unrecognized disassembler option with '=': %s"), | |
114 | option); | |
115 | return; | |
116 | } | |
117 | ||
118 | *equal = '\0'; | |
119 | value = equal + 1; | |
120 | if (strcmp (option, "priv-spec") == 0) | |
121 | { | |
3d73d29e NC |
122 | enum riscv_spec_class priv_spec = PRIV_SPEC_CLASS_NONE; |
123 | const char *name = NULL; | |
124 | ||
125 | RISCV_GET_PRIV_SPEC_CLASS (value, priv_spec); | |
126 | if (priv_spec == PRIV_SPEC_CLASS_NONE) | |
b800637e | 127 | opcodes_error_handler (_("unknown privileged spec set by %s=%s"), |
8152e040 NC |
128 | option, value); |
129 | else if (default_priv_spec == PRIV_SPEC_CLASS_NONE) | |
130 | default_priv_spec = priv_spec; | |
131 | else if (default_priv_spec != priv_spec) | |
3d73d29e NC |
132 | { |
133 | RISCV_GET_PRIV_SPEC_NAME (name, default_priv_spec); | |
134 | opcodes_error_handler (_("mis-matched privilege spec set by %s=%s, " | |
135 | "the elf privilege attribute is %s"), | |
136 | option, value, name); | |
137 | } | |
8f595e9b | 138 | } |
e23eba97 NC |
139 | else |
140 | { | |
a6743a54 AM |
141 | /* xgettext:c-format */ |
142 | opcodes_error_handler (_("unrecognized disassembler option: %s"), option); | |
e23eba97 NC |
143 | } |
144 | } | |
145 | ||
146 | static void | |
147 | parse_riscv_dis_options (const char *opts_in) | |
148 | { | |
149 | char *opts = xstrdup (opts_in), *opt = opts, *opt_end = opts; | |
150 | ||
151 | set_default_riscv_dis_options (); | |
152 | ||
153 | for ( ; opt_end != NULL; opt = opt_end + 1) | |
154 | { | |
155 | if ((opt_end = strchr (opt, ',')) != NULL) | |
156 | *opt_end = 0; | |
157 | parse_riscv_dis_option (opt); | |
158 | } | |
159 | ||
160 | free (opts); | |
161 | } | |
162 | ||
163 | /* Print one argument from an array. */ | |
164 | ||
165 | static void | |
166 | arg_print (struct disassemble_info *info, unsigned long val, | |
167 | const char* const* array, size_t size) | |
168 | { | |
169 | const char *s = val >= size || array[val] == NULL ? "unknown" : array[val]; | |
49d31dc9 | 170 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "%s", s); |
e23eba97 NC |
171 | } |
172 | ||
173 | static void | |
c7dee848 JW |
174 | maybe_print_address (struct riscv_private_data *pd, int base_reg, int offset, |
175 | int wide) | |
e23eba97 NC |
176 | { |
177 | if (pd->hi_addr[base_reg] != (bfd_vma)-1) | |
178 | { | |
35fd2b2b | 179 | pd->print_addr = (base_reg != 0 ? pd->hi_addr[base_reg] : 0) + offset; |
e23eba97 NC |
180 | pd->hi_addr[base_reg] = -1; |
181 | } | |
8fe1be5f | 182 | else if (base_reg == X_GP && pd->has_gp) |
e23eba97 NC |
183 | pd->print_addr = pd->gp + offset; |
184 | else if (base_reg == X_TP || base_reg == 0) | |
185 | pd->print_addr = offset; | |
48525554 TO |
186 | else |
187 | return; /* Don't print the address. */ | |
8fe1be5f | 188 | pd->to_print_addr = true; |
c7dee848 JW |
189 | |
190 | /* Sign-extend a 32-bit value to a 64-bit value. */ | |
191 | if (wide) | |
192 | pd->print_addr = (bfd_vma)(int32_t) pd->print_addr; | |
48525554 TO |
193 | |
194 | /* Fit into a 32-bit value on RV32. */ | |
195 | if (xlen == 32) | |
196 | pd->print_addr = (bfd_vma)(uint32_t)pd->print_addr; | |
e23eba97 NC |
197 | } |
198 | ||
199 | /* Print insn arguments for 32/64-bit code. */ | |
200 | ||
201 | static void | |
437e2ff1 | 202 | print_insn_args (const char *oparg, insn_t l, bfd_vma pc, disassemble_info *info) |
e23eba97 NC |
203 | { |
204 | struct riscv_private_data *pd = info->private_data; | |
205 | int rs1 = (l >> OP_SH_RS1) & OP_MASK_RS1; | |
206 | int rd = (l >> OP_SH_RD) & OP_MASK_RD; | |
49d31dc9 | 207 | fprintf_styled_ftype print = info->fprintf_styled_func; |
437e2ff1 | 208 | const char *opargStart; |
e23eba97 | 209 | |
437e2ff1 | 210 | if (*oparg != '\0') |
49d31dc9 | 211 | print (info->stream, dis_style_text, "\t"); |
e23eba97 | 212 | |
437e2ff1 | 213 | for (; *oparg != '\0'; oparg++) |
e23eba97 | 214 | { |
437e2ff1 NC |
215 | opargStart = oparg; |
216 | switch (*oparg) | |
e23eba97 NC |
217 | { |
218 | case 'C': /* RVC */ | |
437e2ff1 | 219 | switch (*++oparg) |
e23eba97 | 220 | { |
dcd709e0 NC |
221 | case 's': /* RS1 x8-x15. */ |
222 | case 'w': /* RS1 x8-x15. */ | |
49d31dc9 | 223 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
224 | riscv_gpr_names[EXTRACT_OPERAND (CRS1S, l) + 8]); |
225 | break; | |
dcd709e0 NC |
226 | case 't': /* RS2 x8-x15. */ |
227 | case 'x': /* RS2 x8-x15. */ | |
49d31dc9 | 228 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
229 | riscv_gpr_names[EXTRACT_OPERAND (CRS2S, l) + 8]); |
230 | break; | |
dcd709e0 | 231 | case 'U': /* RS1, constrained to equal RD. */ |
49d31dc9 AB |
232 | print (info->stream, dis_style_register, |
233 | "%s", riscv_gpr_names[rd]); | |
e23eba97 | 234 | break; |
dcd709e0 | 235 | case 'c': /* RS1, constrained to equal sp. */ |
49d31dc9 AB |
236 | print (info->stream, dis_style_register, "%s", |
237 | riscv_gpr_names[X_SP]); | |
e23eba97 NC |
238 | break; |
239 | case 'V': /* RS2 */ | |
49d31dc9 | 240 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
241 | riscv_gpr_names[EXTRACT_OPERAND (CRS2, l)]); |
242 | break; | |
f91d48de | 243 | case 'o': |
e23eba97 | 244 | case 'j': |
c7dee848 JW |
245 | if (((l & MASK_C_ADDI) == MATCH_C_ADDI) && rd != 0) |
246 | maybe_print_address (pd, rd, EXTRACT_CITYPE_IMM (l), 0); | |
247 | if (info->mach == bfd_mach_riscv64 | |
248 | && ((l & MASK_C_ADDIW) == MATCH_C_ADDIW) && rd != 0) | |
249 | maybe_print_address (pd, rd, EXTRACT_CITYPE_IMM (l), 1); | |
49d31dc9 AB |
250 | print (info->stream, dis_style_immediate, "%d", |
251 | (int)EXTRACT_CITYPE_IMM (l)); | |
e23eba97 NC |
252 | break; |
253 | case 'k': | |
49d31dc9 AB |
254 | print (info->stream, dis_style_address_offset, "%d", |
255 | (int)EXTRACT_CLTYPE_LW_IMM (l)); | |
e23eba97 NC |
256 | break; |
257 | case 'l': | |
49d31dc9 AB |
258 | print (info->stream, dis_style_address_offset, "%d", |
259 | (int)EXTRACT_CLTYPE_LD_IMM (l)); | |
e23eba97 NC |
260 | break; |
261 | case 'm': | |
49d31dc9 AB |
262 | print (info->stream, dis_style_address_offset, "%d", |
263 | (int)EXTRACT_CITYPE_LWSP_IMM (l)); | |
e23eba97 NC |
264 | break; |
265 | case 'n': | |
49d31dc9 AB |
266 | print (info->stream, dis_style_address_offset, "%d", |
267 | (int)EXTRACT_CITYPE_LDSP_IMM (l)); | |
e23eba97 NC |
268 | break; |
269 | case 'K': | |
49d31dc9 AB |
270 | print (info->stream, dis_style_immediate, "%d", |
271 | (int)EXTRACT_CIWTYPE_ADDI4SPN_IMM (l)); | |
e23eba97 NC |
272 | break; |
273 | case 'L': | |
49d31dc9 AB |
274 | print (info->stream, dis_style_immediate, "%d", |
275 | (int)EXTRACT_CITYPE_ADDI16SP_IMM (l)); | |
e23eba97 NC |
276 | break; |
277 | case 'M': | |
49d31dc9 AB |
278 | print (info->stream, dis_style_address_offset, "%d", |
279 | (int)EXTRACT_CSSTYPE_SWSP_IMM (l)); | |
e23eba97 NC |
280 | break; |
281 | case 'N': | |
49d31dc9 AB |
282 | print (info->stream, dis_style_address_offset, "%d", |
283 | (int)EXTRACT_CSSTYPE_SDSP_IMM (l)); | |
e23eba97 NC |
284 | break; |
285 | case 'p': | |
5a9f5403 | 286 | info->target = EXTRACT_CBTYPE_IMM (l) + pc; |
e23eba97 NC |
287 | (*info->print_address_func) (info->target, info); |
288 | break; | |
289 | case 'a': | |
5a9f5403 | 290 | info->target = EXTRACT_CJTYPE_IMM (l) + pc; |
e23eba97 NC |
291 | (*info->print_address_func) (info->target, info); |
292 | break; | |
293 | case 'u': | |
49d31dc9 | 294 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 295 | (unsigned)(EXTRACT_CITYPE_IMM (l) & (RISCV_BIGIMM_REACH-1))); |
e23eba97 NC |
296 | break; |
297 | case '>': | |
49d31dc9 | 298 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 299 | (unsigned)EXTRACT_CITYPE_IMM (l) & 0x3f); |
e23eba97 NC |
300 | break; |
301 | case '<': | |
49d31dc9 | 302 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 303 | (unsigned)EXTRACT_CITYPE_IMM (l) & 0x1f); |
e23eba97 | 304 | break; |
dcd709e0 | 305 | case 'T': /* Floating-point RS2. */ |
49d31dc9 | 306 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
307 | riscv_fpr_names[EXTRACT_OPERAND (CRS2, l)]); |
308 | break; | |
dcd709e0 | 309 | case 'D': /* Floating-point RS2 x8-x15. */ |
49d31dc9 | 310 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
311 | riscv_fpr_names[EXTRACT_OPERAND (CRS2S, l) + 8]); |
312 | break; | |
313 | } | |
314 | break; | |
315 | ||
65e4a99a NC |
316 | case 'V': /* RVV */ |
317 | switch (*++oparg) | |
318 | { | |
319 | case 'd': | |
320 | case 'f': | |
49d31dc9 | 321 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
322 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VD, l)]); |
323 | break; | |
324 | case 'e': | |
325 | if (!EXTRACT_OPERAND (VWD, l)) | |
49d31dc9 AB |
326 | print (info->stream, dis_style_register, "%s", |
327 | riscv_gpr_names[0]); | |
65e4a99a | 328 | else |
49d31dc9 | 329 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
330 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VD, l)]); |
331 | break; | |
332 | case 's': | |
49d31dc9 | 333 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
334 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VS1, l)]); |
335 | break; | |
336 | case 't': | |
337 | case 'u': /* VS1 == VS2 already verified at this point. */ | |
338 | case 'v': /* VD == VS1 == VS2 already verified at this point. */ | |
49d31dc9 | 339 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
340 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VS2, l)]); |
341 | break; | |
342 | case '0': | |
49d31dc9 AB |
343 | print (info->stream, dis_style_register, "%s", |
344 | riscv_vecr_names_numeric[0]); | |
65e4a99a NC |
345 | break; |
346 | case 'b': | |
347 | case 'c': | |
348 | { | |
349 | int imm = (*oparg == 'b') ? EXTRACT_RVV_VB_IMM (l) | |
350 | : EXTRACT_RVV_VC_IMM (l); | |
351 | unsigned int imm_vlmul = EXTRACT_OPERAND (VLMUL, imm); | |
352 | unsigned int imm_vsew = EXTRACT_OPERAND (VSEW, imm); | |
353 | unsigned int imm_vta = EXTRACT_OPERAND (VTA, imm); | |
354 | unsigned int imm_vma = EXTRACT_OPERAND (VMA, imm); | |
abfdb09f | 355 | unsigned int imm_vtype_res = (imm >> 8); |
65e4a99a NC |
356 | |
357 | if (imm_vsew < ARRAY_SIZE (riscv_vsew) | |
358 | && imm_vlmul < ARRAY_SIZE (riscv_vlmul) | |
359 | && imm_vta < ARRAY_SIZE (riscv_vta) | |
360 | && imm_vma < ARRAY_SIZE (riscv_vma) | |
ee083a9e NC |
361 | && !imm_vtype_res |
362 | && riscv_vsew[imm_vsew] != NULL | |
363 | && riscv_vlmul[imm_vlmul] != NULL) | |
49d31dc9 AB |
364 | print (info->stream, dis_style_text, "%s,%s,%s,%s", |
365 | riscv_vsew[imm_vsew], | |
65e4a99a NC |
366 | riscv_vlmul[imm_vlmul], riscv_vta[imm_vta], |
367 | riscv_vma[imm_vma]); | |
368 | else | |
49d31dc9 | 369 | print (info->stream, dis_style_immediate, "%d", imm); |
65e4a99a NC |
370 | } |
371 | break; | |
372 | case 'i': | |
49d31dc9 AB |
373 | print (info->stream, dis_style_immediate, "%d", |
374 | (int)EXTRACT_RVV_VI_IMM (l)); | |
65e4a99a NC |
375 | break; |
376 | case 'j': | |
49d31dc9 AB |
377 | print (info->stream, dis_style_immediate, "%d", |
378 | (int)EXTRACT_RVV_VI_UIMM (l)); | |
65e4a99a NC |
379 | break; |
380 | case 'k': | |
49d31dc9 AB |
381 | print (info->stream, dis_style_immediate, "%d", |
382 | (int)EXTRACT_RVV_OFFSET (l)); | |
65e4a99a NC |
383 | break; |
384 | case 'm': | |
385 | if (! EXTRACT_OPERAND (VMASK, l)) | |
49d31dc9 AB |
386 | print (info->stream, dis_style_register, ",%s", |
387 | riscv_vecm_names_numeric[0]); | |
65e4a99a NC |
388 | break; |
389 | } | |
390 | break; | |
391 | ||
e23eba97 NC |
392 | case ',': |
393 | case '(': | |
394 | case ')': | |
395 | case '[': | |
396 | case ']': | |
49d31dc9 | 397 | print (info->stream, dis_style_text, "%c", *oparg); |
e23eba97 NC |
398 | break; |
399 | ||
400 | case '0': | |
dcd709e0 | 401 | /* Only print constant 0 if it is the last argument. */ |
437e2ff1 | 402 | if (!oparg[1]) |
49d31dc9 | 403 | print (info->stream, dis_style_immediate, "0"); |
e23eba97 NC |
404 | break; |
405 | ||
e23eba97 | 406 | case 's': |
35eeb78f | 407 | if ((l & MASK_JALR) == MATCH_JALR) |
48525554 | 408 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
49d31dc9 | 409 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[rs1]); |
e23eba97 NC |
410 | break; |
411 | ||
412 | case 't': | |
49d31dc9 | 413 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
414 | riscv_gpr_names[EXTRACT_OPERAND (RS2, l)]); |
415 | break; | |
416 | ||
417 | case 'u': | |
49d31dc9 | 418 | print (info->stream, dis_style_immediate, "0x%x", |
e23eba97 NC |
419 | (unsigned)EXTRACT_UTYPE_IMM (l) >> RISCV_IMM_BITS); |
420 | break; | |
421 | ||
422 | case 'm': | |
423 | arg_print (info, EXTRACT_OPERAND (RM, l), | |
424 | riscv_rm, ARRAY_SIZE (riscv_rm)); | |
425 | break; | |
426 | ||
427 | case 'P': | |
428 | arg_print (info, EXTRACT_OPERAND (PRED, l), | |
429 | riscv_pred_succ, ARRAY_SIZE (riscv_pred_succ)); | |
430 | break; | |
431 | ||
432 | case 'Q': | |
433 | arg_print (info, EXTRACT_OPERAND (SUCC, l), | |
434 | riscv_pred_succ, ARRAY_SIZE (riscv_pred_succ)); | |
435 | break; | |
436 | ||
437 | case 'o': | |
c7dee848 | 438 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
b52d3cfc | 439 | /* Fall through. */ |
e23eba97 NC |
440 | case 'j': |
441 | if (((l & MASK_ADDI) == MATCH_ADDI && rs1 != 0) | |
442 | || (l & MASK_JALR) == MATCH_JALR) | |
c7dee848 JW |
443 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
444 | if (info->mach == bfd_mach_riscv64 | |
445 | && ((l & MASK_ADDIW) == MATCH_ADDIW) && rs1 != 0) | |
446 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 1); | |
49d31dc9 AB |
447 | print (info->stream, dis_style_immediate, "%d", |
448 | (int)EXTRACT_ITYPE_IMM (l)); | |
e23eba97 NC |
449 | break; |
450 | ||
451 | case 'q': | |
c7dee848 | 452 | maybe_print_address (pd, rs1, EXTRACT_STYPE_IMM (l), 0); |
49d31dc9 AB |
453 | print (info->stream, dis_style_address_offset, "%d", |
454 | (int)EXTRACT_STYPE_IMM (l)); | |
e23eba97 NC |
455 | break; |
456 | ||
3b374308 | 457 | case 'f': |
49d31dc9 AB |
458 | print (info->stream, dis_style_address_offset, "%d", |
459 | (int)EXTRACT_STYPE_IMM (l)); | |
3b374308 TO |
460 | break; |
461 | ||
e23eba97 | 462 | case 'a': |
5a9f5403 | 463 | info->target = EXTRACT_JTYPE_IMM (l) + pc; |
e23eba97 NC |
464 | (*info->print_address_func) (info->target, info); |
465 | break; | |
466 | ||
467 | case 'p': | |
5a9f5403 | 468 | info->target = EXTRACT_BTYPE_IMM (l) + pc; |
e23eba97 NC |
469 | (*info->print_address_func) (info->target, info); |
470 | break; | |
471 | ||
472 | case 'd': | |
473 | if ((l & MASK_AUIPC) == MATCH_AUIPC) | |
474 | pd->hi_addr[rd] = pc + EXTRACT_UTYPE_IMM (l); | |
475 | else if ((l & MASK_LUI) == MATCH_LUI) | |
476 | pd->hi_addr[rd] = EXTRACT_UTYPE_IMM (l); | |
477 | else if ((l & MASK_C_LUI) == MATCH_C_LUI) | |
5a9f5403 | 478 | pd->hi_addr[rd] = EXTRACT_CITYPE_LUI_IMM (l); |
49d31dc9 | 479 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[rd]); |
e23eba97 NC |
480 | break; |
481 | ||
3d1cafa0 | 482 | case 'y': |
9a76ca16 | 483 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 484 | (unsigned)EXTRACT_OPERAND (BS, l)); |
3d1cafa0 | 485 | break; |
486 | ||
e23eba97 | 487 | case 'z': |
49d31dc9 | 488 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[0]); |
e23eba97 NC |
489 | break; |
490 | ||
491 | case '>': | |
49d31dc9 | 492 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 493 | (unsigned)EXTRACT_OPERAND (SHAMT, l)); |
e23eba97 NC |
494 | break; |
495 | ||
496 | case '<': | |
49d31dc9 | 497 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 498 | (unsigned)EXTRACT_OPERAND (SHAMTW, l)); |
e23eba97 NC |
499 | break; |
500 | ||
501 | case 'S': | |
502 | case 'U': | |
49d31dc9 | 503 | print (info->stream, dis_style_register, "%s", riscv_fpr_names[rs1]); |
e23eba97 NC |
504 | break; |
505 | ||
506 | case 'T': | |
49d31dc9 AB |
507 | print (info->stream, dis_style_register, "%s", |
508 | riscv_fpr_names[EXTRACT_OPERAND (RS2, l)]); | |
e23eba97 NC |
509 | break; |
510 | ||
511 | case 'D': | |
49d31dc9 | 512 | print (info->stream, dis_style_register, "%s", riscv_fpr_names[rd]); |
e23eba97 NC |
513 | break; |
514 | ||
515 | case 'R': | |
49d31dc9 AB |
516 | print (info->stream, dis_style_register, "%s", |
517 | riscv_fpr_names[EXTRACT_OPERAND (RS3, l)]); | |
e23eba97 NC |
518 | break; |
519 | ||
520 | case 'E': | |
521 | { | |
dcd709e0 | 522 | static const char *riscv_csr_hash[4096]; /* Total 2^12 CSRs. */ |
78933a4a | 523 | static bool init_csr = false; |
e23eba97 | 524 | unsigned int csr = EXTRACT_OPERAND (CSR, l); |
8f595e9b NC |
525 | |
526 | if (!init_csr) | |
e23eba97 | 527 | { |
8f595e9b NC |
528 | unsigned int i; |
529 | for (i = 0; i < 4096; i++) | |
530 | riscv_csr_hash[i] = NULL; | |
531 | ||
dcd709e0 | 532 | /* Set to the newest privileged version. */ |
8f595e9b NC |
533 | if (default_priv_spec == PRIV_SPEC_CLASS_NONE) |
534 | default_priv_spec = PRIV_SPEC_CLASS_DRAFT - 1; | |
535 | ||
08ccfccf NC |
536 | #define DECLARE_CSR(name, num, class, define_version, abort_version) \ |
537 | if (riscv_csr_hash[num] == NULL \ | |
538 | && ((define_version == PRIV_SPEC_CLASS_NONE \ | |
539 | && abort_version == PRIV_SPEC_CLASS_NONE) \ | |
540 | || (default_priv_spec >= define_version \ | |
541 | && default_priv_spec < abort_version))) \ | |
8f595e9b NC |
542 | riscv_csr_hash[num] = #name; |
543 | #define DECLARE_CSR_ALIAS(name, num, class, define_version, abort_version) \ | |
544 | DECLARE_CSR (name, num, class, define_version, abort_version) | |
e23eba97 NC |
545 | #include "opcode/riscv-opc.h" |
546 | #undef DECLARE_CSR | |
547 | } | |
8f595e9b NC |
548 | |
549 | if (riscv_csr_hash[csr] != NULL) | |
e840e61c AB |
550 | print (info->stream, dis_style_register, "%s", |
551 | riscv_csr_hash[csr]); | |
e23eba97 | 552 | else |
9a76ca16 | 553 | print (info->stream, dis_style_immediate, "0x%x", csr); |
e23eba97 NC |
554 | break; |
555 | } | |
556 | ||
3d1cafa0 | 557 | case 'Y': |
9a76ca16 | 558 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 559 | (unsigned) EXTRACT_OPERAND (RNUM, l)); |
3d1cafa0 | 560 | break; |
561 | ||
e23eba97 | 562 | case 'Z': |
9a76ca16 | 563 | print (info->stream, dis_style_immediate, "%d", rs1); |
e23eba97 NC |
564 | break; |
565 | ||
8b7419c4 CM |
566 | case 'X': /* Integer immediate. */ |
567 | { | |
568 | size_t n; | |
569 | size_t s; | |
570 | bool sign; | |
571 | ||
572 | switch (*++oparg) | |
573 | { | |
25236d63 CM |
574 | case 'l': /* Literal. */ |
575 | oparg++; | |
576 | while (*oparg && *oparg != ',') | |
577 | { | |
578 | print (info->stream, dis_style_text, "%c", *oparg); | |
579 | oparg++; | |
580 | } | |
581 | oparg--; | |
582 | break; | |
8b7419c4 CM |
583 | case 's': /* 'XsN@S' ... N-bit signed immediate at bit S. */ |
584 | sign = true; | |
585 | goto print_imm; | |
586 | case 'u': /* 'XuN@S' ... N-bit unsigned immediate at bit S. */ | |
587 | sign = false; | |
588 | goto print_imm; | |
589 | print_imm: | |
b0423163 | 590 | n = strtol (oparg + 1, (char **)&oparg, 10); |
8b7419c4 CM |
591 | if (*oparg != '@') |
592 | goto undefined_modifier; | |
b0423163 | 593 | s = strtol (oparg + 1, (char **)&oparg, 10); |
8b7419c4 CM |
594 | oparg--; |
595 | ||
596 | if (!sign) | |
597 | print (info->stream, dis_style_immediate, "%u", | |
598 | (unsigned)EXTRACT_U_IMM (n, s, l)); | |
599 | else | |
600 | print (info->stream, dis_style_immediate, "%i", | |
601 | (unsigned)EXTRACT_S_IMM (n, s, l)); | |
602 | break; | |
603 | default: | |
604 | goto undefined_modifier; | |
605 | } | |
606 | } | |
607 | break; | |
e23eba97 | 608 | default: |
8b7419c4 | 609 | undefined_modifier: |
e23eba97 | 610 | /* xgettext:c-format */ |
49d31dc9 AB |
611 | print (info->stream, dis_style_text, |
612 | _("# internal error, undefined modifier (%c)"), | |
437e2ff1 | 613 | *opargStart); |
e23eba97 NC |
614 | return; |
615 | } | |
616 | } | |
617 | } | |
618 | ||
619 | /* Print the RISC-V instruction at address MEMADDR in debugged memory, | |
620 | on using INFO. Returns length of the instruction, in bytes. | |
621 | BIGENDIAN must be 1 if this is big-endian code, 0 if | |
622 | this is little-endian code. */ | |
623 | ||
624 | static int | |
625 | riscv_disassemble_insn (bfd_vma memaddr, insn_t word, disassemble_info *info) | |
626 | { | |
627 | const struct riscv_opcode *op; | |
78933a4a | 628 | static bool init = 0; |
e23eba97 NC |
629 | static const struct riscv_opcode *riscv_hash[OP_MASK_OP + 1]; |
630 | struct riscv_private_data *pd; | |
631 | int insnlen; | |
632 | ||
633 | #define OP_HASH_IDX(i) ((i) & (riscv_insn_length (i) == 2 ? 0x3 : OP_MASK_OP)) | |
634 | ||
635 | /* Build a hash table to shorten the search time. */ | |
636 | if (! init) | |
637 | { | |
638 | for (op = riscv_opcodes; op->name; op++) | |
639 | if (!riscv_hash[OP_HASH_IDX (op->match)]) | |
640 | riscv_hash[OP_HASH_IDX (op->match)] = op; | |
641 | ||
642 | init = 1; | |
643 | } | |
644 | ||
645 | if (info->private_data == NULL) | |
646 | { | |
647 | int i; | |
648 | ||
649 | pd = info->private_data = xcalloc (1, sizeof (struct riscv_private_data)); | |
8fe1be5f TO |
650 | pd->gp = 0; |
651 | pd->print_addr = 0; | |
e23eba97 NC |
652 | for (i = 0; i < (int)ARRAY_SIZE (pd->hi_addr); i++) |
653 | pd->hi_addr[i] = -1; | |
8fe1be5f TO |
654 | pd->to_print_addr = false; |
655 | pd->has_gp = false; | |
e23eba97 NC |
656 | |
657 | for (i = 0; i < info->symtab_size; i++) | |
b5292032 | 658 | if (strcmp (bfd_asymbol_name (info->symtab[i]), RISCV_GP_SYMBOL) == 0) |
8fe1be5f TO |
659 | { |
660 | pd->gp = bfd_asymbol_value (info->symtab[i]); | |
661 | pd->has_gp = true; | |
662 | } | |
e23eba97 NC |
663 | } |
664 | else | |
665 | pd = info->private_data; | |
666 | ||
667 | insnlen = riscv_insn_length (word); | |
668 | ||
d7560e2d JW |
669 | /* RISC-V instructions are always little-endian. */ |
670 | info->endian_code = BFD_ENDIAN_LITTLE; | |
671 | ||
e23eba97 NC |
672 | info->bytes_per_chunk = insnlen % 4 == 0 ? 4 : 2; |
673 | info->bytes_per_line = 8; | |
d7560e2d JW |
674 | /* We don't support constant pools, so this must be code. */ |
675 | info->display_endian = info->endian_code; | |
e23eba97 NC |
676 | info->insn_info_valid = 1; |
677 | info->branch_delay_insns = 0; | |
678 | info->data_size = 0; | |
679 | info->insn_type = dis_nonbranch; | |
680 | info->target = 0; | |
681 | info->target2 = 0; | |
682 | ||
683 | op = riscv_hash[OP_HASH_IDX (word)]; | |
684 | if (op != NULL) | |
685 | { | |
2922d21d AW |
686 | /* If XLEN is not known, get its value from the ELF class. */ |
687 | if (info->mach == bfd_mach_riscv64) | |
688 | xlen = 64; | |
689 | else if (info->mach == bfd_mach_riscv32) | |
690 | xlen = 32; | |
691 | else if (info->section != NULL) | |
e23eba97 NC |
692 | { |
693 | Elf_Internal_Ehdr *ehdr = elf_elfheader (info->section->owner); | |
694 | xlen = ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? 64 : 32; | |
695 | } | |
696 | ||
de83e514 | 697 | /* If arch has ZFINX flags, use gpr for disassemble. */ |
698 | if(riscv_subset_supports (&riscv_rps_dis, "zfinx")) | |
3d5d6bd5 | 699 | riscv_fpr_names = riscv_gpr_names; |
de83e514 | 700 | |
e23eba97 NC |
701 | for (; op->name; op++) |
702 | { | |
703 | /* Does the opcode match? */ | |
704 | if (! (op->match_func) (op, word)) | |
705 | continue; | |
706 | /* Is this a pseudo-instruction and may we print it as such? */ | |
707 | if (no_aliases && (op->pinfo & INSN_ALIAS)) | |
708 | continue; | |
709 | /* Is this instruction restricted to a certain value of XLEN? */ | |
43135d3b | 710 | if ((op->xlen_requirement != 0) && (op->xlen_requirement != xlen)) |
e23eba97 NC |
711 | continue; |
712 | ||
f786c359 NC |
713 | if (!riscv_multi_subset_supports (&riscv_rps_dis, op->insn_class)) |
714 | continue; | |
715 | ||
e23eba97 | 716 | /* It's a match. */ |
49d31dc9 AB |
717 | (*info->fprintf_styled_func) (info->stream, dis_style_mnemonic, |
718 | "%s", op->name); | |
e23eba97 NC |
719 | print_insn_args (op->args, word, memaddr, info); |
720 | ||
721 | /* Try to disassemble multi-instruction addressing sequences. */ | |
8fe1be5f | 722 | if (pd->to_print_addr) |
e23eba97 NC |
723 | { |
724 | info->target = pd->print_addr; | |
49d31dc9 AB |
725 | (*info->fprintf_styled_func) |
726 | (info->stream, dis_style_comment_start, " # "); | |
e23eba97 | 727 | (*info->print_address_func) (info->target, info); |
8fe1be5f | 728 | pd->to_print_addr = false; |
e23eba97 NC |
729 | } |
730 | ||
eb41b248 JW |
731 | /* Finish filling out insn_info fields. */ |
732 | switch (op->pinfo & INSN_TYPE) | |
733 | { | |
734 | case INSN_BRANCH: | |
735 | info->insn_type = dis_branch; | |
736 | break; | |
737 | case INSN_CONDBRANCH: | |
738 | info->insn_type = dis_condbranch; | |
739 | break; | |
740 | case INSN_JSR: | |
741 | info->insn_type = dis_jsr; | |
742 | break; | |
743 | case INSN_DREF: | |
744 | info->insn_type = dis_dref; | |
745 | break; | |
746 | default: | |
747 | break; | |
748 | } | |
749 | ||
750 | if (op->pinfo & INSN_DATA_SIZE) | |
751 | { | |
752 | int size = ((op->pinfo & INSN_DATA_SIZE) | |
753 | >> INSN_DATA_SIZE_SHIFT); | |
754 | info->data_size = 1 << (size - 1); | |
755 | } | |
756 | ||
e23eba97 NC |
757 | return insnlen; |
758 | } | |
759 | } | |
760 | ||
761 | /* We did not find a match, so just print the instruction bits. */ | |
762 | info->insn_type = dis_noninsn; | |
6a7f5766 AB |
763 | switch (insnlen) |
764 | { | |
765 | case 2: | |
766 | case 4: | |
767 | case 8: | |
49d31dc9 AB |
768 | (*info->fprintf_styled_func) |
769 | (info->stream, dis_style_assembler_directive, ".%dbyte\t", insnlen); | |
770 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, | |
771 | "0x%llx", (unsigned long long) word); | |
6a7f5766 AB |
772 | break; |
773 | default: | |
774 | { | |
775 | int i; | |
49d31dc9 AB |
776 | (*info->fprintf_styled_func) |
777 | (info->stream, dis_style_assembler_directive, ".byte\t"); | |
6a7f5766 AB |
778 | for (i = 0; i < insnlen; ++i) |
779 | { | |
780 | if (i > 0) | |
49d31dc9 AB |
781 | (*info->fprintf_styled_func) (info->stream, dis_style_text, |
782 | ", "); | |
783 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, | |
784 | "0x%02x", | |
785 | (unsigned int) (word & 0xff)); | |
6a7f5766 AB |
786 | word >>= 8; |
787 | } | |
788 | } | |
789 | break; | |
790 | } | |
e23eba97 NC |
791 | return insnlen; |
792 | } | |
793 | ||
9b9b1092 NC |
794 | /* Return true if we find the suitable mapping symbol, |
795 | and also update the STATE. Otherwise, return false. */ | |
796 | ||
797 | static bool | |
798 | riscv_get_map_state (int n, | |
799 | enum riscv_seg_mstate *state, | |
800 | struct disassemble_info *info) | |
801 | { | |
802 | const char *name; | |
803 | ||
804 | /* If the symbol is in a different section, ignore it. */ | |
805 | if (info->section != NULL | |
806 | && info->section != info->symtab[n]->section) | |
807 | return false; | |
808 | ||
809 | name = bfd_asymbol_name(info->symtab[n]); | |
810 | if (strcmp (name, "$x") == 0) | |
811 | *state = MAP_INSN; | |
812 | else if (strcmp (name, "$d") == 0) | |
813 | *state = MAP_DATA; | |
814 | else | |
815 | return false; | |
816 | ||
817 | return true; | |
818 | } | |
819 | ||
820 | /* Check the sorted symbol table (sorted by the symbol value), find the | |
821 | suitable mapping symbols. */ | |
822 | ||
823 | static enum riscv_seg_mstate | |
824 | riscv_search_mapping_symbol (bfd_vma memaddr, | |
825 | struct disassemble_info *info) | |
826 | { | |
827 | enum riscv_seg_mstate mstate; | |
828 | bool from_last_map_symbol; | |
829 | bool found = false; | |
830 | int symbol = -1; | |
831 | int n; | |
832 | ||
833 | /* Decide whether to print the data or instruction by default, in case | |
834 | we can not find the corresponding mapping symbols. */ | |
835 | mstate = MAP_DATA; | |
836 | if ((info->section | |
837 | && info->section->flags & SEC_CODE) | |
838 | || !info->section) | |
839 | mstate = MAP_INSN; | |
840 | ||
841 | if (info->symtab_size == 0 | |
842 | || bfd_asymbol_flavour (*info->symtab) != bfd_target_elf_flavour) | |
843 | return mstate; | |
844 | ||
845 | /* Reset the last_map_symbol if we start to dump a new section. */ | |
846 | if (memaddr <= 0) | |
847 | last_map_symbol = -1; | |
848 | ||
849 | /* If the last stop offset is different from the current one, then | |
850 | don't use the last_map_symbol to search. We usually reset the | |
851 | info->stop_offset when handling a new section. */ | |
852 | from_last_map_symbol = (last_map_symbol >= 0 | |
853 | && info->stop_offset == last_stop_offset); | |
854 | ||
855 | /* Start scanning at the start of the function, or wherever | |
856 | we finished last time. */ | |
857 | n = info->symtab_pos + 1; | |
858 | if (from_last_map_symbol && n >= last_map_symbol) | |
859 | n = last_map_symbol; | |
860 | ||
861 | /* Find the suitable mapping symbol to dump. */ | |
862 | for (; n < info->symtab_size; n++) | |
863 | { | |
864 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
865 | /* We have searched all possible symbols in the range. */ | |
866 | if (addr > memaddr) | |
867 | break; | |
868 | if (riscv_get_map_state (n, &mstate, info)) | |
869 | { | |
870 | symbol = n; | |
871 | found = true; | |
872 | /* Do not stop searching, in case there are some mapping | |
873 | symbols have the same value, but have different names. | |
874 | Use the last one. */ | |
875 | } | |
876 | } | |
877 | ||
878 | /* We can not find the suitable mapping symbol above. Therefore, we | |
879 | look forwards and try to find it again, but don't go pass the start | |
880 | of the section. Otherwise a data section without mapping symbols | |
881 | can pick up a text mapping symbol of a preceeding section. */ | |
882 | if (!found) | |
883 | { | |
884 | n = info->symtab_pos; | |
885 | if (from_last_map_symbol && n >= last_map_symbol) | |
886 | n = last_map_symbol; | |
887 | ||
888 | for (; n >= 0; n--) | |
889 | { | |
890 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
891 | /* We have searched all possible symbols in the range. */ | |
892 | if (addr < (info->section ? info->section->vma : 0)) | |
893 | break; | |
894 | /* Stop searching once we find the closed mapping symbol. */ | |
895 | if (riscv_get_map_state (n, &mstate, info)) | |
896 | { | |
897 | symbol = n; | |
898 | found = true; | |
899 | break; | |
900 | } | |
901 | } | |
902 | } | |
903 | ||
904 | /* Save the information for next use. */ | |
905 | last_map_symbol = symbol; | |
906 | last_stop_offset = info->stop_offset; | |
907 | ||
908 | return mstate; | |
909 | } | |
910 | ||
911 | /* Decide which data size we should print. */ | |
912 | ||
913 | static bfd_vma | |
914 | riscv_data_length (bfd_vma memaddr, | |
915 | disassemble_info *info) | |
916 | { | |
917 | bfd_vma length; | |
918 | bool found = false; | |
919 | ||
920 | length = 4; | |
921 | if (info->symtab_size != 0 | |
922 | && bfd_asymbol_flavour (*info->symtab) == bfd_target_elf_flavour | |
923 | && last_map_symbol >= 0) | |
924 | { | |
925 | int n; | |
926 | enum riscv_seg_mstate m = MAP_NONE; | |
927 | for (n = last_map_symbol + 1; n < info->symtab_size; n++) | |
928 | { | |
929 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
930 | if (addr > memaddr | |
931 | && riscv_get_map_state (n, &m, info)) | |
932 | { | |
933 | if (addr - memaddr < length) | |
934 | length = addr - memaddr; | |
935 | found = true; | |
936 | break; | |
937 | } | |
938 | } | |
939 | } | |
940 | if (!found) | |
941 | { | |
942 | /* Do not set the length which exceeds the section size. */ | |
943 | bfd_vma offset = info->section->vma + info->section->size; | |
944 | offset -= memaddr; | |
945 | length = (offset < length) ? offset : length; | |
946 | } | |
947 | length = length == 3 ? 2 : length; | |
948 | return length; | |
949 | } | |
950 | ||
951 | /* Dump the data contents. */ | |
952 | ||
953 | static int | |
954 | riscv_disassemble_data (bfd_vma memaddr ATTRIBUTE_UNUSED, | |
955 | insn_t data, | |
956 | disassemble_info *info) | |
957 | { | |
958 | info->display_endian = info->endian; | |
959 | ||
960 | switch (info->bytes_per_chunk) | |
961 | { | |
962 | case 1: | |
963 | info->bytes_per_line = 6; | |
49d31dc9 AB |
964 | (*info->fprintf_styled_func) |
965 | (info->stream, dis_style_assembler_directive, ".byte\t"); | |
966 | (*info->fprintf_styled_func) | |
9a76ca16 | 967 | (info->stream, dis_style_immediate, "0x%02llx", |
49d31dc9 | 968 | (unsigned long long) data); |
9b9b1092 NC |
969 | break; |
970 | case 2: | |
971 | info->bytes_per_line = 8; | |
49d31dc9 AB |
972 | (*info->fprintf_styled_func) |
973 | (info->stream, dis_style_assembler_directive, ".short\t"); | |
974 | (*info->fprintf_styled_func) | |
975 | (info->stream, dis_style_immediate, "0x%04llx", | |
976 | (unsigned long long) data); | |
9b9b1092 NC |
977 | break; |
978 | case 4: | |
979 | info->bytes_per_line = 8; | |
49d31dc9 AB |
980 | (*info->fprintf_styled_func) |
981 | (info->stream, dis_style_assembler_directive, ".word\t"); | |
982 | (*info->fprintf_styled_func) | |
983 | (info->stream, dis_style_immediate, "0x%08llx", | |
984 | (unsigned long long) data); | |
9b9b1092 NC |
985 | break; |
986 | case 8: | |
987 | info->bytes_per_line = 8; | |
49d31dc9 AB |
988 | (*info->fprintf_styled_func) |
989 | (info->stream, dis_style_assembler_directive, ".dword\t"); | |
990 | (*info->fprintf_styled_func) | |
991 | (info->stream, dis_style_immediate, "0x%016llx", | |
992 | (unsigned long long) data); | |
9b9b1092 NC |
993 | break; |
994 | default: | |
995 | abort (); | |
996 | } | |
997 | return info->bytes_per_chunk; | |
998 | } | |
999 | ||
e23eba97 NC |
1000 | int |
1001 | print_insn_riscv (bfd_vma memaddr, struct disassemble_info *info) | |
1002 | { | |
73e30e72 | 1003 | bfd_byte packet[RISCV_MAX_INSN_LEN]; |
e23eba97 | 1004 | insn_t insn = 0; |
9b9b1092 | 1005 | bfd_vma dump_size; |
e23eba97 | 1006 | int status; |
9b9b1092 NC |
1007 | enum riscv_seg_mstate mstate; |
1008 | int (*riscv_disassembler) (bfd_vma, insn_t, struct disassemble_info *); | |
e23eba97 NC |
1009 | |
1010 | if (info->disassembler_options != NULL) | |
1011 | { | |
1012 | parse_riscv_dis_options (info->disassembler_options); | |
1013 | /* Avoid repeatedly parsing the options. */ | |
1014 | info->disassembler_options = NULL; | |
1015 | } | |
1016 | else if (riscv_gpr_names == NULL) | |
1017 | set_default_riscv_dis_options (); | |
1018 | ||
9b9b1092 NC |
1019 | mstate = riscv_search_mapping_symbol (memaddr, info); |
1020 | /* Save the last mapping state. */ | |
1021 | last_map_state = mstate; | |
1022 | ||
1023 | /* Set the size to dump. */ | |
1024 | if (mstate == MAP_DATA | |
1025 | && (info->flags & DISASSEMBLE_DATA) == 0) | |
1026 | { | |
1027 | dump_size = riscv_data_length (memaddr, info); | |
1028 | info->bytes_per_chunk = dump_size; | |
1029 | riscv_disassembler = riscv_disassemble_data; | |
1030 | } | |
1031 | else | |
e23eba97 | 1032 | { |
9b9b1092 NC |
1033 | /* Get the first 2-bytes to check the lenghth of instruction. */ |
1034 | status = (*info->read_memory_func) (memaddr, packet, 2, info); | |
e23eba97 NC |
1035 | if (status != 0) |
1036 | { | |
e23eba97 | 1037 | (*info->memory_error_func) (status, memaddr, info); |
685bb4e8 | 1038 | return status; |
e23eba97 | 1039 | } |
9b9b1092 NC |
1040 | insn = (insn_t) bfd_getl16 (packet); |
1041 | dump_size = riscv_insn_length (insn); | |
1042 | riscv_disassembler = riscv_disassemble_insn; | |
1043 | } | |
e23eba97 | 1044 | |
9b9b1092 NC |
1045 | /* Fetch the instruction to dump. */ |
1046 | status = (*info->read_memory_func) (memaddr, packet, dump_size, info); | |
1047 | if (status != 0) | |
1048 | { | |
1049 | (*info->memory_error_func) (status, memaddr, info); | |
685bb4e8 | 1050 | return status; |
e23eba97 | 1051 | } |
9b9b1092 | 1052 | insn = (insn_t) bfd_get_bits (packet, dump_size * 8, false); |
e23eba97 | 1053 | |
9b9b1092 | 1054 | return (*riscv_disassembler) (memaddr, insn, info); |
e23eba97 NC |
1055 | } |
1056 | ||
8152e040 NC |
1057 | disassembler_ftype |
1058 | riscv_get_disassembler (bfd *abfd) | |
1059 | { | |
f786c359 NC |
1060 | const char *default_arch = "rv64gc"; |
1061 | ||
16089f32 | 1062 | if (abfd && bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
8152e040 | 1063 | { |
16089f32 TH |
1064 | const char *sec_name = get_elf_backend_data (abfd)->obj_attrs_section; |
1065 | if (bfd_get_section_by_name (abfd, sec_name) != NULL) | |
f786c359 | 1066 | { |
16089f32 TH |
1067 | obj_attribute *attr = elf_known_obj_attributes_proc (abfd); |
1068 | unsigned int Tag_a = Tag_RISCV_priv_spec; | |
1069 | unsigned int Tag_b = Tag_RISCV_priv_spec_minor; | |
1070 | unsigned int Tag_c = Tag_RISCV_priv_spec_revision; | |
1071 | riscv_get_priv_spec_class_from_numbers (attr[Tag_a].i, | |
1072 | attr[Tag_b].i, | |
1073 | attr[Tag_c].i, | |
1074 | &default_priv_spec); | |
1075 | default_arch = attr[Tag_RISCV_arch].s; | |
f786c359 | 1076 | } |
8152e040 | 1077 | } |
f786c359 NC |
1078 | |
1079 | riscv_release_subset_list (&riscv_subsets); | |
1080 | riscv_parse_subset (&riscv_rps_dis, default_arch); | |
1081 | return print_insn_riscv; | |
8152e040 NC |
1082 | } |
1083 | ||
884b49e3 AB |
1084 | /* Prevent use of the fake labels that are generated as part of the DWARF |
1085 | and for relaxable relocations in the assembler. */ | |
1086 | ||
78933a4a | 1087 | bool |
884b49e3 AB |
1088 | riscv_symbol_is_valid (asymbol * sym, |
1089 | struct disassemble_info * info ATTRIBUTE_UNUSED) | |
1090 | { | |
1091 | const char * name; | |
1092 | ||
1093 | if (sym == NULL) | |
78933a4a | 1094 | return false; |
884b49e3 AB |
1095 | |
1096 | name = bfd_asymbol_name (sym); | |
1097 | ||
9b9b1092 NC |
1098 | return (strcmp (name, RISCV_FAKE_LABEL_NAME) != 0 |
1099 | && !riscv_elf_is_mapping_symbols (name)); | |
884b49e3 | 1100 | } |
3a337a86 AB |
1101 | \f |
1102 | ||
1103 | /* Indices into option argument vector for options accepting an argument. | |
1104 | Use RISCV_OPTION_ARG_NONE for options accepting no argument. */ | |
1105 | ||
1106 | typedef enum | |
1107 | { | |
1108 | RISCV_OPTION_ARG_NONE = -1, | |
1109 | RISCV_OPTION_ARG_PRIV_SPEC, | |
1110 | ||
1111 | RISCV_OPTION_ARG_COUNT | |
1112 | } riscv_option_arg_t; | |
1113 | ||
1114 | /* Valid RISCV disassembler options. */ | |
1115 | ||
1116 | static struct | |
1117 | { | |
1118 | const char *name; | |
1119 | const char *description; | |
1120 | riscv_option_arg_t arg; | |
1121 | } riscv_options[] = | |
1122 | { | |
1123 | { "numeric", | |
1124 | N_("Print numeric register names, rather than ABI names."), | |
1125 | RISCV_OPTION_ARG_NONE }, | |
1126 | { "no-aliases", | |
1127 | N_("Disassemble only into canonical instructions."), | |
1128 | RISCV_OPTION_ARG_NONE }, | |
1129 | { "priv-spec=", | |
1130 | N_("Print the CSR according to the chosen privilege spec."), | |
1131 | RISCV_OPTION_ARG_PRIV_SPEC } | |
1132 | }; | |
1133 | ||
1134 | /* Build the structure representing valid RISCV disassembler options. | |
1135 | This is done dynamically for maintenance ease purpose; a static | |
1136 | initializer would be unreadable. */ | |
1137 | ||
1138 | const disasm_options_and_args_t * | |
1139 | disassembler_options_riscv (void) | |
1140 | { | |
1141 | static disasm_options_and_args_t *opts_and_args; | |
1142 | ||
1143 | if (opts_and_args == NULL) | |
1144 | { | |
1145 | size_t num_options = ARRAY_SIZE (riscv_options); | |
1146 | size_t num_args = RISCV_OPTION_ARG_COUNT; | |
1147 | disasm_option_arg_t *args; | |
1148 | disasm_options_t *opts; | |
1149 | size_t i, priv_spec_count; | |
1150 | ||
1151 | args = XNEWVEC (disasm_option_arg_t, num_args + 1); | |
1152 | ||
1153 | args[RISCV_OPTION_ARG_PRIV_SPEC].name = "SPEC"; | |
1154 | priv_spec_count = PRIV_SPEC_CLASS_DRAFT - PRIV_SPEC_CLASS_NONE - 1; | |
1155 | args[RISCV_OPTION_ARG_PRIV_SPEC].values | |
1156 | = XNEWVEC (const char *, priv_spec_count + 1); | |
1157 | for (i = 0; i < priv_spec_count; i++) | |
1158 | args[RISCV_OPTION_ARG_PRIV_SPEC].values[i] | |
1159 | = riscv_priv_specs[i].name; | |
1160 | /* The array we return must be NULL terminated. */ | |
1161 | args[RISCV_OPTION_ARG_PRIV_SPEC].values[i] = NULL; | |
1162 | ||
1163 | /* The array we return must be NULL terminated. */ | |
1164 | args[num_args].name = NULL; | |
1165 | args[num_args].values = NULL; | |
1166 | ||
1167 | opts_and_args = XNEW (disasm_options_and_args_t); | |
1168 | opts_and_args->args = args; | |
1169 | ||
1170 | opts = &opts_and_args->options; | |
1171 | opts->name = XNEWVEC (const char *, num_options + 1); | |
1172 | opts->description = XNEWVEC (const char *, num_options + 1); | |
1173 | opts->arg = XNEWVEC (const disasm_option_arg_t *, num_options + 1); | |
1174 | for (i = 0; i < num_options; i++) | |
1175 | { | |
1176 | opts->name[i] = riscv_options[i].name; | |
1177 | opts->description[i] = _(riscv_options[i].description); | |
1178 | if (riscv_options[i].arg != RISCV_OPTION_ARG_NONE) | |
1179 | opts->arg[i] = &args[riscv_options[i].arg]; | |
1180 | else | |
1181 | opts->arg[i] = NULL; | |
1182 | } | |
1183 | /* The array we return must be NULL terminated. */ | |
1184 | opts->name[i] = NULL; | |
1185 | opts->description[i] = NULL; | |
1186 | opts->arg[i] = NULL; | |
1187 | } | |
1188 | ||
1189 | return opts_and_args; | |
1190 | } | |
884b49e3 | 1191 | |
e23eba97 NC |
1192 | void |
1193 | print_riscv_disassembler_options (FILE *stream) | |
1194 | { | |
3a337a86 AB |
1195 | const disasm_options_and_args_t *opts_and_args; |
1196 | const disasm_option_arg_t *args; | |
1197 | const disasm_options_t *opts; | |
1198 | size_t max_len = 0; | |
1199 | size_t i; | |
1200 | size_t j; | |
1201 | ||
1202 | opts_and_args = disassembler_options_riscv (); | |
1203 | opts = &opts_and_args->options; | |
1204 | args = opts_and_args->args; | |
1205 | ||
e23eba97 | 1206 | fprintf (stream, _("\n\ |
3a337a86 | 1207 | The following RISC-V specific disassembler options are supported for use\n\ |
e23eba97 | 1208 | with the -M switch (multiple options should be separated by commas):\n")); |
3a337a86 | 1209 | fprintf (stream, "\n"); |
e23eba97 | 1210 | |
3a337a86 AB |
1211 | /* Compute the length of the longest option name. */ |
1212 | for (i = 0; opts->name[i] != NULL; i++) | |
1213 | { | |
1214 | size_t len = strlen (opts->name[i]); | |
8f595e9b | 1215 | |
3a337a86 AB |
1216 | if (opts->arg[i] != NULL) |
1217 | len += strlen (opts->arg[i]->name); | |
1218 | if (max_len < len) | |
1219 | max_len = len; | |
1220 | } | |
e23eba97 | 1221 | |
3a337a86 AB |
1222 | for (i = 0, max_len++; opts->name[i] != NULL; i++) |
1223 | { | |
1224 | fprintf (stream, " %s", opts->name[i]); | |
1225 | if (opts->arg[i] != NULL) | |
1226 | fprintf (stream, "%s", opts->arg[i]->name); | |
1227 | if (opts->description[i] != NULL) | |
1228 | { | |
1229 | size_t len = strlen (opts->name[i]); | |
1230 | ||
1231 | if (opts->arg != NULL && opts->arg[i] != NULL) | |
1232 | len += strlen (opts->arg[i]->name); | |
1233 | fprintf (stream, "%*c %s", (int) (max_len - len), ' ', | |
1234 | opts->description[i]); | |
1235 | } | |
1236 | fprintf (stream, "\n"); | |
1237 | } | |
1238 | ||
1239 | for (i = 0; args[i].name != NULL; i++) | |
1240 | { | |
9869e2e5 TO |
1241 | if (args[i].values == NULL) |
1242 | continue; | |
3a337a86 AB |
1243 | fprintf (stream, _("\n\ |
1244 | For the options above, the following values are supported for \"%s\":\n "), | |
1245 | args[i].name); | |
1246 | for (j = 0; args[i].values[j] != NULL; j++) | |
1247 | fprintf (stream, " %s", args[i].values[j]); | |
1248 | fprintf (stream, _("\n")); | |
1249 | } | |
e23eba97 NC |
1250 | |
1251 | fprintf (stream, _("\n")); | |
1252 | } |