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e23eba97 | 1 | /* RISC-V disassembler |
d87bef3a | 2 | Copyright (C) 2011-2023 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 | ||
2b8fd839 | 35 | /* Current XLEN for the disassembler. */ |
3009ffe0 | 36 | static unsigned xlen = 0; |
2b8fd839 TO |
37 | |
38 | /* Default ISA specification version (constant as of now). */ | |
f786c359 | 39 | static enum riscv_spec_class default_isa_spec = ISA_SPEC_CLASS_DRAFT - 1; |
8f595e9b | 40 | |
2b8fd839 TO |
41 | /* Default privileged specification |
42 | (as specified by the ELF attributes or the `priv-spec' option). */ | |
43 | static enum riscv_spec_class default_priv_spec = PRIV_SPEC_CLASS_NONE; | |
f786c359 NC |
44 | |
45 | static riscv_subset_list_t riscv_subsets; | |
46 | static riscv_parse_subset_t riscv_rps_dis = | |
47 | { | |
48 | &riscv_subsets, /* subset_list. */ | |
49 | opcodes_error_handler,/* error_handler. */ | |
50 | &xlen, /* xlen. */ | |
51 | &default_isa_spec, /* isa_spec. */ | |
52 | false, /* check_unknown_prefixed_ext. */ | |
53 | }; | |
54 | ||
e23eba97 NC |
55 | struct riscv_private_data |
56 | { | |
57 | bfd_vma gp; | |
58 | bfd_vma print_addr; | |
59 | bfd_vma hi_addr[OP_MASK_RD + 1]; | |
8fe1be5f TO |
60 | bool to_print_addr; |
61 | bool has_gp; | |
e23eba97 NC |
62 | }; |
63 | ||
9b9b1092 NC |
64 | /* Used for mapping symbols. */ |
65 | static int last_map_symbol = -1; | |
66 | static bfd_vma last_stop_offset = 0; | |
c2f60ac5 KC |
67 | static bfd_vma last_map_symbol_boundary = 0; |
68 | static enum riscv_seg_mstate last_map_state = MAP_NONE; | |
69 | static asection *last_map_section = NULL; | |
9b9b1092 | 70 | |
2b8fd839 | 71 | /* Register names as used by the disassembler. */ |
e23eba97 NC |
72 | static const char * const *riscv_gpr_names; |
73 | static const char * const *riscv_fpr_names; | |
74 | ||
dcd709e0 | 75 | /* If set, disassemble as most general instruction. */ |
354c1c09 | 76 | static bool no_aliases = false; |
e23eba97 | 77 | |
2b8fd839 TO |
78 | |
79 | /* Set default RISC-V disassembler options. */ | |
80 | ||
e23eba97 NC |
81 | static void |
82 | set_default_riscv_dis_options (void) | |
83 | { | |
84 | riscv_gpr_names = riscv_gpr_names_abi; | |
85 | riscv_fpr_names = riscv_fpr_names_abi; | |
354c1c09 | 86 | no_aliases = false; |
e23eba97 NC |
87 | } |
88 | ||
2b8fd839 TO |
89 | /* Parse RISC-V disassembler option (without arguments). */ |
90 | ||
78933a4a | 91 | static bool |
8f595e9b | 92 | parse_riscv_dis_option_without_args (const char *option) |
e23eba97 NC |
93 | { |
94 | if (strcmp (option, "no-aliases") == 0) | |
354c1c09 | 95 | no_aliases = true; |
e23eba97 NC |
96 | else if (strcmp (option, "numeric") == 0) |
97 | { | |
98 | riscv_gpr_names = riscv_gpr_names_numeric; | |
99 | riscv_fpr_names = riscv_fpr_names_numeric; | |
100 | } | |
8f595e9b | 101 | else |
78933a4a AM |
102 | return false; |
103 | return true; | |
8f595e9b NC |
104 | } |
105 | ||
2b8fd839 TO |
106 | /* Parse RISC-V disassembler option (possibly with arguments). */ |
107 | ||
8f595e9b NC |
108 | static void |
109 | parse_riscv_dis_option (const char *option) | |
110 | { | |
111 | char *equal, *value; | |
112 | ||
113 | if (parse_riscv_dis_option_without_args (option)) | |
114 | return; | |
115 | ||
116 | equal = strchr (option, '='); | |
117 | if (equal == NULL) | |
118 | { | |
119 | /* The option without '=' should be defined above. */ | |
120 | opcodes_error_handler (_("unrecognized disassembler option: %s"), option); | |
121 | return; | |
122 | } | |
123 | if (equal == option | |
124 | || *(equal + 1) == '\0') | |
125 | { | |
126 | /* Invalid options with '=', no option name before '=', | |
127 | and no value after '='. */ | |
128 | opcodes_error_handler (_("unrecognized disassembler option with '=': %s"), | |
129 | option); | |
130 | return; | |
131 | } | |
132 | ||
133 | *equal = '\0'; | |
134 | value = equal + 1; | |
135 | if (strcmp (option, "priv-spec") == 0) | |
136 | { | |
3d73d29e NC |
137 | enum riscv_spec_class priv_spec = PRIV_SPEC_CLASS_NONE; |
138 | const char *name = NULL; | |
139 | ||
140 | RISCV_GET_PRIV_SPEC_CLASS (value, priv_spec); | |
141 | if (priv_spec == PRIV_SPEC_CLASS_NONE) | |
b800637e | 142 | opcodes_error_handler (_("unknown privileged spec set by %s=%s"), |
8152e040 NC |
143 | option, value); |
144 | else if (default_priv_spec == PRIV_SPEC_CLASS_NONE) | |
145 | default_priv_spec = priv_spec; | |
146 | else if (default_priv_spec != priv_spec) | |
3d73d29e NC |
147 | { |
148 | RISCV_GET_PRIV_SPEC_NAME (name, default_priv_spec); | |
149 | opcodes_error_handler (_("mis-matched privilege spec set by %s=%s, " | |
150 | "the elf privilege attribute is %s"), | |
151 | option, value, name); | |
152 | } | |
8f595e9b | 153 | } |
e23eba97 NC |
154 | else |
155 | { | |
a6743a54 AM |
156 | /* xgettext:c-format */ |
157 | opcodes_error_handler (_("unrecognized disassembler option: %s"), option); | |
e23eba97 NC |
158 | } |
159 | } | |
160 | ||
2b8fd839 TO |
161 | /* Parse RISC-V disassembler options. */ |
162 | ||
e23eba97 NC |
163 | static void |
164 | parse_riscv_dis_options (const char *opts_in) | |
165 | { | |
166 | char *opts = xstrdup (opts_in), *opt = opts, *opt_end = opts; | |
167 | ||
168 | set_default_riscv_dis_options (); | |
169 | ||
170 | for ( ; opt_end != NULL; opt = opt_end + 1) | |
171 | { | |
172 | if ((opt_end = strchr (opt, ',')) != NULL) | |
173 | *opt_end = 0; | |
174 | parse_riscv_dis_option (opt); | |
175 | } | |
176 | ||
177 | free (opts); | |
178 | } | |
179 | ||
180 | /* Print one argument from an array. */ | |
181 | ||
182 | static void | |
183 | arg_print (struct disassemble_info *info, unsigned long val, | |
184 | const char* const* array, size_t size) | |
185 | { | |
186 | const char *s = val >= size || array[val] == NULL ? "unknown" : array[val]; | |
49d31dc9 | 187 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "%s", s); |
e23eba97 NC |
188 | } |
189 | ||
2b8fd839 TO |
190 | /* If we need to print an address, set its value and state. */ |
191 | ||
e23eba97 | 192 | static void |
c7dee848 JW |
193 | maybe_print_address (struct riscv_private_data *pd, int base_reg, int offset, |
194 | int wide) | |
e23eba97 NC |
195 | { |
196 | if (pd->hi_addr[base_reg] != (bfd_vma)-1) | |
197 | { | |
35fd2b2b | 198 | pd->print_addr = (base_reg != 0 ? pd->hi_addr[base_reg] : 0) + offset; |
e23eba97 NC |
199 | pd->hi_addr[base_reg] = -1; |
200 | } | |
8fe1be5f | 201 | else if (base_reg == X_GP && pd->has_gp) |
e23eba97 NC |
202 | pd->print_addr = pd->gp + offset; |
203 | else if (base_reg == X_TP || base_reg == 0) | |
204 | pd->print_addr = offset; | |
48525554 TO |
205 | else |
206 | return; /* Don't print the address. */ | |
8fe1be5f | 207 | pd->to_print_addr = true; |
c7dee848 JW |
208 | |
209 | /* Sign-extend a 32-bit value to a 64-bit value. */ | |
210 | if (wide) | |
211 | pd->print_addr = (bfd_vma)(int32_t) pd->print_addr; | |
48525554 TO |
212 | |
213 | /* Fit into a 32-bit value on RV32. */ | |
214 | if (xlen == 32) | |
215 | pd->print_addr = (bfd_vma)(uint32_t)pd->print_addr; | |
e23eba97 NC |
216 | } |
217 | ||
218 | /* Print insn arguments for 32/64-bit code. */ | |
219 | ||
220 | static void | |
437e2ff1 | 221 | print_insn_args (const char *oparg, insn_t l, bfd_vma pc, disassemble_info *info) |
e23eba97 NC |
222 | { |
223 | struct riscv_private_data *pd = info->private_data; | |
224 | int rs1 = (l >> OP_SH_RS1) & OP_MASK_RS1; | |
225 | int rd = (l >> OP_SH_RD) & OP_MASK_RD; | |
49d31dc9 | 226 | fprintf_styled_ftype print = info->fprintf_styled_func; |
437e2ff1 | 227 | const char *opargStart; |
e23eba97 | 228 | |
437e2ff1 | 229 | if (*oparg != '\0') |
49d31dc9 | 230 | print (info->stream, dis_style_text, "\t"); |
e23eba97 | 231 | |
437e2ff1 | 232 | for (; *oparg != '\0'; oparg++) |
e23eba97 | 233 | { |
437e2ff1 NC |
234 | opargStart = oparg; |
235 | switch (*oparg) | |
e23eba97 NC |
236 | { |
237 | case 'C': /* RVC */ | |
437e2ff1 | 238 | switch (*++oparg) |
e23eba97 | 239 | { |
dcd709e0 NC |
240 | case 's': /* RS1 x8-x15. */ |
241 | case 'w': /* RS1 x8-x15. */ | |
49d31dc9 | 242 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
243 | riscv_gpr_names[EXTRACT_OPERAND (CRS1S, l) + 8]); |
244 | break; | |
dcd709e0 NC |
245 | case 't': /* RS2 x8-x15. */ |
246 | case 'x': /* RS2 x8-x15. */ | |
49d31dc9 | 247 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
248 | riscv_gpr_names[EXTRACT_OPERAND (CRS2S, l) + 8]); |
249 | break; | |
dcd709e0 | 250 | case 'U': /* RS1, constrained to equal RD. */ |
49d31dc9 AB |
251 | print (info->stream, dis_style_register, |
252 | "%s", riscv_gpr_names[rd]); | |
e23eba97 | 253 | break; |
dcd709e0 | 254 | case 'c': /* RS1, constrained to equal sp. */ |
49d31dc9 AB |
255 | print (info->stream, dis_style_register, "%s", |
256 | riscv_gpr_names[X_SP]); | |
e23eba97 NC |
257 | break; |
258 | case 'V': /* RS2 */ | |
49d31dc9 | 259 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
260 | riscv_gpr_names[EXTRACT_OPERAND (CRS2, l)]); |
261 | break; | |
f91d48de | 262 | case 'o': |
e23eba97 | 263 | case 'j': |
c7dee848 JW |
264 | if (((l & MASK_C_ADDI) == MATCH_C_ADDI) && rd != 0) |
265 | maybe_print_address (pd, rd, EXTRACT_CITYPE_IMM (l), 0); | |
266 | if (info->mach == bfd_mach_riscv64 | |
267 | && ((l & MASK_C_ADDIW) == MATCH_C_ADDIW) && rd != 0) | |
268 | maybe_print_address (pd, rd, EXTRACT_CITYPE_IMM (l), 1); | |
49d31dc9 AB |
269 | print (info->stream, dis_style_immediate, "%d", |
270 | (int)EXTRACT_CITYPE_IMM (l)); | |
e23eba97 NC |
271 | break; |
272 | case 'k': | |
49d31dc9 AB |
273 | print (info->stream, dis_style_address_offset, "%d", |
274 | (int)EXTRACT_CLTYPE_LW_IMM (l)); | |
e23eba97 NC |
275 | break; |
276 | case 'l': | |
49d31dc9 AB |
277 | print (info->stream, dis_style_address_offset, "%d", |
278 | (int)EXTRACT_CLTYPE_LD_IMM (l)); | |
e23eba97 NC |
279 | break; |
280 | case 'm': | |
49d31dc9 AB |
281 | print (info->stream, dis_style_address_offset, "%d", |
282 | (int)EXTRACT_CITYPE_LWSP_IMM (l)); | |
e23eba97 NC |
283 | break; |
284 | case 'n': | |
49d31dc9 AB |
285 | print (info->stream, dis_style_address_offset, "%d", |
286 | (int)EXTRACT_CITYPE_LDSP_IMM (l)); | |
e23eba97 NC |
287 | break; |
288 | case 'K': | |
49d31dc9 AB |
289 | print (info->stream, dis_style_immediate, "%d", |
290 | (int)EXTRACT_CIWTYPE_ADDI4SPN_IMM (l)); | |
e23eba97 NC |
291 | break; |
292 | case 'L': | |
49d31dc9 AB |
293 | print (info->stream, dis_style_immediate, "%d", |
294 | (int)EXTRACT_CITYPE_ADDI16SP_IMM (l)); | |
e23eba97 NC |
295 | break; |
296 | case 'M': | |
49d31dc9 AB |
297 | print (info->stream, dis_style_address_offset, "%d", |
298 | (int)EXTRACT_CSSTYPE_SWSP_IMM (l)); | |
e23eba97 NC |
299 | break; |
300 | case 'N': | |
49d31dc9 AB |
301 | print (info->stream, dis_style_address_offset, "%d", |
302 | (int)EXTRACT_CSSTYPE_SDSP_IMM (l)); | |
e23eba97 NC |
303 | break; |
304 | case 'p': | |
5a9f5403 | 305 | info->target = EXTRACT_CBTYPE_IMM (l) + pc; |
e23eba97 NC |
306 | (*info->print_address_func) (info->target, info); |
307 | break; | |
308 | case 'a': | |
5a9f5403 | 309 | info->target = EXTRACT_CJTYPE_IMM (l) + pc; |
e23eba97 NC |
310 | (*info->print_address_func) (info->target, info); |
311 | break; | |
312 | case 'u': | |
49d31dc9 | 313 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 314 | (unsigned)(EXTRACT_CITYPE_IMM (l) & (RISCV_BIGIMM_REACH-1))); |
e23eba97 NC |
315 | break; |
316 | case '>': | |
49d31dc9 | 317 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 318 | (unsigned)EXTRACT_CITYPE_IMM (l) & 0x3f); |
e23eba97 NC |
319 | break; |
320 | case '<': | |
49d31dc9 | 321 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 322 | (unsigned)EXTRACT_CITYPE_IMM (l) & 0x1f); |
e23eba97 | 323 | break; |
dcd709e0 | 324 | case 'T': /* Floating-point RS2. */ |
49d31dc9 | 325 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
326 | riscv_fpr_names[EXTRACT_OPERAND (CRS2, l)]); |
327 | break; | |
dcd709e0 | 328 | case 'D': /* Floating-point RS2 x8-x15. */ |
49d31dc9 | 329 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
330 | riscv_fpr_names[EXTRACT_OPERAND (CRS2S, l) + 8]); |
331 | break; | |
332 | } | |
333 | break; | |
334 | ||
65e4a99a NC |
335 | case 'V': /* RVV */ |
336 | switch (*++oparg) | |
337 | { | |
338 | case 'd': | |
339 | case 'f': | |
49d31dc9 | 340 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
341 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VD, l)]); |
342 | break; | |
343 | case 'e': | |
344 | if (!EXTRACT_OPERAND (VWD, l)) | |
49d31dc9 AB |
345 | print (info->stream, dis_style_register, "%s", |
346 | riscv_gpr_names[0]); | |
65e4a99a | 347 | else |
49d31dc9 | 348 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
349 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VD, l)]); |
350 | break; | |
351 | case 's': | |
49d31dc9 | 352 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
353 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VS1, l)]); |
354 | break; | |
355 | case 't': | |
356 | case 'u': /* VS1 == VS2 already verified at this point. */ | |
357 | case 'v': /* VD == VS1 == VS2 already verified at this point. */ | |
49d31dc9 | 358 | print (info->stream, dis_style_register, "%s", |
65e4a99a NC |
359 | riscv_vecr_names_numeric[EXTRACT_OPERAND (VS2, l)]); |
360 | break; | |
361 | case '0': | |
49d31dc9 AB |
362 | print (info->stream, dis_style_register, "%s", |
363 | riscv_vecr_names_numeric[0]); | |
65e4a99a NC |
364 | break; |
365 | case 'b': | |
366 | case 'c': | |
367 | { | |
368 | int imm = (*oparg == 'b') ? EXTRACT_RVV_VB_IMM (l) | |
369 | : EXTRACT_RVV_VC_IMM (l); | |
370 | unsigned int imm_vlmul = EXTRACT_OPERAND (VLMUL, imm); | |
371 | unsigned int imm_vsew = EXTRACT_OPERAND (VSEW, imm); | |
372 | unsigned int imm_vta = EXTRACT_OPERAND (VTA, imm); | |
373 | unsigned int imm_vma = EXTRACT_OPERAND (VMA, imm); | |
abfdb09f | 374 | unsigned int imm_vtype_res = (imm >> 8); |
65e4a99a NC |
375 | |
376 | if (imm_vsew < ARRAY_SIZE (riscv_vsew) | |
377 | && imm_vlmul < ARRAY_SIZE (riscv_vlmul) | |
378 | && imm_vta < ARRAY_SIZE (riscv_vta) | |
379 | && imm_vma < ARRAY_SIZE (riscv_vma) | |
ee083a9e NC |
380 | && !imm_vtype_res |
381 | && riscv_vsew[imm_vsew] != NULL | |
382 | && riscv_vlmul[imm_vlmul] != NULL) | |
49d31dc9 AB |
383 | print (info->stream, dis_style_text, "%s,%s,%s,%s", |
384 | riscv_vsew[imm_vsew], | |
65e4a99a NC |
385 | riscv_vlmul[imm_vlmul], riscv_vta[imm_vta], |
386 | riscv_vma[imm_vma]); | |
387 | else | |
49d31dc9 | 388 | print (info->stream, dis_style_immediate, "%d", imm); |
65e4a99a NC |
389 | } |
390 | break; | |
391 | case 'i': | |
49d31dc9 AB |
392 | print (info->stream, dis_style_immediate, "%d", |
393 | (int)EXTRACT_RVV_VI_IMM (l)); | |
65e4a99a NC |
394 | break; |
395 | case 'j': | |
49d31dc9 AB |
396 | print (info->stream, dis_style_immediate, "%d", |
397 | (int)EXTRACT_RVV_VI_UIMM (l)); | |
65e4a99a NC |
398 | break; |
399 | case 'k': | |
49d31dc9 AB |
400 | print (info->stream, dis_style_immediate, "%d", |
401 | (int)EXTRACT_RVV_OFFSET (l)); | |
65e4a99a NC |
402 | break; |
403 | case 'm': | |
f3a80235 TO |
404 | if (!EXTRACT_OPERAND (VMASK, l)) |
405 | { | |
406 | print (info->stream, dis_style_text, ","); | |
407 | print (info->stream, dis_style_register, "%s", | |
408 | riscv_vecm_names_numeric[0]); | |
409 | } | |
65e4a99a NC |
410 | break; |
411 | } | |
412 | break; | |
413 | ||
e23eba97 NC |
414 | case ',': |
415 | case '(': | |
416 | case ')': | |
417 | case '[': | |
418 | case ']': | |
49d31dc9 | 419 | print (info->stream, dis_style_text, "%c", *oparg); |
e23eba97 NC |
420 | break; |
421 | ||
422 | case '0': | |
dcd709e0 | 423 | /* Only print constant 0 if it is the last argument. */ |
437e2ff1 | 424 | if (!oparg[1]) |
49d31dc9 | 425 | print (info->stream, dis_style_immediate, "0"); |
e23eba97 NC |
426 | break; |
427 | ||
e23eba97 | 428 | case 's': |
35eeb78f | 429 | if ((l & MASK_JALR) == MATCH_JALR) |
48525554 | 430 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
49d31dc9 | 431 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[rs1]); |
e23eba97 NC |
432 | break; |
433 | ||
434 | case 't': | |
49d31dc9 | 435 | print (info->stream, dis_style_register, "%s", |
e23eba97 NC |
436 | riscv_gpr_names[EXTRACT_OPERAND (RS2, l)]); |
437 | break; | |
438 | ||
439 | case 'u': | |
49d31dc9 | 440 | print (info->stream, dis_style_immediate, "0x%x", |
e23eba97 NC |
441 | (unsigned)EXTRACT_UTYPE_IMM (l) >> RISCV_IMM_BITS); |
442 | break; | |
443 | ||
444 | case 'm': | |
445 | arg_print (info, EXTRACT_OPERAND (RM, l), | |
446 | riscv_rm, ARRAY_SIZE (riscv_rm)); | |
447 | break; | |
448 | ||
449 | case 'P': | |
450 | arg_print (info, EXTRACT_OPERAND (PRED, l), | |
451 | riscv_pred_succ, ARRAY_SIZE (riscv_pred_succ)); | |
452 | break; | |
453 | ||
454 | case 'Q': | |
455 | arg_print (info, EXTRACT_OPERAND (SUCC, l), | |
456 | riscv_pred_succ, ARRAY_SIZE (riscv_pred_succ)); | |
457 | break; | |
458 | ||
459 | case 'o': | |
c7dee848 | 460 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
b52d3cfc | 461 | /* Fall through. */ |
e23eba97 NC |
462 | case 'j': |
463 | if (((l & MASK_ADDI) == MATCH_ADDI && rs1 != 0) | |
464 | || (l & MASK_JALR) == MATCH_JALR) | |
c7dee848 JW |
465 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 0); |
466 | if (info->mach == bfd_mach_riscv64 | |
467 | && ((l & MASK_ADDIW) == MATCH_ADDIW) && rs1 != 0) | |
468 | maybe_print_address (pd, rs1, EXTRACT_ITYPE_IMM (l), 1); | |
49d31dc9 AB |
469 | print (info->stream, dis_style_immediate, "%d", |
470 | (int)EXTRACT_ITYPE_IMM (l)); | |
e23eba97 NC |
471 | break; |
472 | ||
473 | case 'q': | |
c7dee848 | 474 | maybe_print_address (pd, rs1, EXTRACT_STYPE_IMM (l), 0); |
49d31dc9 AB |
475 | print (info->stream, dis_style_address_offset, "%d", |
476 | (int)EXTRACT_STYPE_IMM (l)); | |
e23eba97 NC |
477 | break; |
478 | ||
479 | case 'a': | |
5a9f5403 | 480 | info->target = EXTRACT_JTYPE_IMM (l) + pc; |
e23eba97 NC |
481 | (*info->print_address_func) (info->target, info); |
482 | break; | |
483 | ||
484 | case 'p': | |
5a9f5403 | 485 | info->target = EXTRACT_BTYPE_IMM (l) + pc; |
e23eba97 NC |
486 | (*info->print_address_func) (info->target, info); |
487 | break; | |
488 | ||
489 | case 'd': | |
490 | if ((l & MASK_AUIPC) == MATCH_AUIPC) | |
491 | pd->hi_addr[rd] = pc + EXTRACT_UTYPE_IMM (l); | |
492 | else if ((l & MASK_LUI) == MATCH_LUI) | |
493 | pd->hi_addr[rd] = EXTRACT_UTYPE_IMM (l); | |
494 | else if ((l & MASK_C_LUI) == MATCH_C_LUI) | |
5a9f5403 | 495 | pd->hi_addr[rd] = EXTRACT_CITYPE_LUI_IMM (l); |
49d31dc9 | 496 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[rd]); |
e23eba97 NC |
497 | break; |
498 | ||
3d1cafa0 | 499 | case 'y': |
9a76ca16 | 500 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 501 | (unsigned)EXTRACT_OPERAND (BS, l)); |
3d1cafa0 | 502 | break; |
503 | ||
e23eba97 | 504 | case 'z': |
49d31dc9 | 505 | print (info->stream, dis_style_register, "%s", riscv_gpr_names[0]); |
e23eba97 NC |
506 | break; |
507 | ||
508 | case '>': | |
49d31dc9 | 509 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 510 | (unsigned)EXTRACT_OPERAND (SHAMT, l)); |
e23eba97 NC |
511 | break; |
512 | ||
513 | case '<': | |
49d31dc9 | 514 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 515 | (unsigned)EXTRACT_OPERAND (SHAMTW, l)); |
e23eba97 NC |
516 | break; |
517 | ||
518 | case 'S': | |
519 | case 'U': | |
49d31dc9 | 520 | print (info->stream, dis_style_register, "%s", riscv_fpr_names[rs1]); |
e23eba97 NC |
521 | break; |
522 | ||
523 | case 'T': | |
49d31dc9 AB |
524 | print (info->stream, dis_style_register, "%s", |
525 | riscv_fpr_names[EXTRACT_OPERAND (RS2, l)]); | |
e23eba97 NC |
526 | break; |
527 | ||
528 | case 'D': | |
49d31dc9 | 529 | print (info->stream, dis_style_register, "%s", riscv_fpr_names[rd]); |
e23eba97 NC |
530 | break; |
531 | ||
532 | case 'R': | |
49d31dc9 AB |
533 | print (info->stream, dis_style_register, "%s", |
534 | riscv_fpr_names[EXTRACT_OPERAND (RS3, l)]); | |
e23eba97 NC |
535 | break; |
536 | ||
537 | case 'E': | |
538 | { | |
dcd709e0 | 539 | static const char *riscv_csr_hash[4096]; /* Total 2^12 CSRs. */ |
78933a4a | 540 | static bool init_csr = false; |
e23eba97 | 541 | unsigned int csr = EXTRACT_OPERAND (CSR, l); |
8f595e9b NC |
542 | |
543 | if (!init_csr) | |
e23eba97 | 544 | { |
8f595e9b NC |
545 | unsigned int i; |
546 | for (i = 0; i < 4096; i++) | |
547 | riscv_csr_hash[i] = NULL; | |
548 | ||
dcd709e0 | 549 | /* Set to the newest privileged version. */ |
8f595e9b NC |
550 | if (default_priv_spec == PRIV_SPEC_CLASS_NONE) |
551 | default_priv_spec = PRIV_SPEC_CLASS_DRAFT - 1; | |
552 | ||
08ccfccf NC |
553 | #define DECLARE_CSR(name, num, class, define_version, abort_version) \ |
554 | if (riscv_csr_hash[num] == NULL \ | |
555 | && ((define_version == PRIV_SPEC_CLASS_NONE \ | |
556 | && abort_version == PRIV_SPEC_CLASS_NONE) \ | |
557 | || (default_priv_spec >= define_version \ | |
558 | && default_priv_spec < abort_version))) \ | |
8f595e9b NC |
559 | riscv_csr_hash[num] = #name; |
560 | #define DECLARE_CSR_ALIAS(name, num, class, define_version, abort_version) \ | |
561 | DECLARE_CSR (name, num, class, define_version, abort_version) | |
e23eba97 NC |
562 | #include "opcode/riscv-opc.h" |
563 | #undef DECLARE_CSR | |
564 | } | |
8f595e9b NC |
565 | |
566 | if (riscv_csr_hash[csr] != NULL) | |
e840e61c AB |
567 | print (info->stream, dis_style_register, "%s", |
568 | riscv_csr_hash[csr]); | |
e23eba97 | 569 | else |
9a76ca16 | 570 | print (info->stream, dis_style_immediate, "0x%x", csr); |
e23eba97 NC |
571 | break; |
572 | } | |
573 | ||
3d1cafa0 | 574 | case 'Y': |
9a76ca16 | 575 | print (info->stream, dis_style_immediate, "0x%x", |
2cfc7c87 | 576 | (unsigned) EXTRACT_OPERAND (RNUM, l)); |
3d1cafa0 | 577 | break; |
578 | ||
e23eba97 | 579 | case 'Z': |
9a76ca16 | 580 | print (info->stream, dis_style_immediate, "%d", rs1); |
e23eba97 NC |
581 | break; |
582 | ||
54bca63b TO |
583 | case 'W': /* Various operands. */ |
584 | { | |
585 | switch (*++oparg) | |
586 | { | |
587 | case 'i': | |
588 | switch (*++oparg) | |
589 | { | |
590 | case 'f': | |
591 | print (info->stream, dis_style_address_offset, "%d", | |
592 | (int) EXTRACT_STYPE_IMM (l)); | |
593 | break; | |
594 | default: | |
595 | goto undefined_modifier; | |
596 | } | |
597 | break; | |
598 | default: | |
599 | goto undefined_modifier; | |
600 | } | |
601 | } | |
602 | break; | |
603 | ||
8b7419c4 CM |
604 | case 'X': /* Integer immediate. */ |
605 | { | |
606 | size_t n; | |
607 | size_t s; | |
608 | bool sign; | |
609 | ||
610 | switch (*++oparg) | |
611 | { | |
25236d63 CM |
612 | case 'l': /* Literal. */ |
613 | oparg++; | |
614 | while (*oparg && *oparg != ',') | |
615 | { | |
a13886e2 | 616 | print (info->stream, dis_style_immediate, "%c", *oparg); |
25236d63 CM |
617 | oparg++; |
618 | } | |
619 | oparg--; | |
620 | break; | |
8b7419c4 CM |
621 | case 's': /* 'XsN@S' ... N-bit signed immediate at bit S. */ |
622 | sign = true; | |
623 | goto print_imm; | |
624 | case 'u': /* 'XuN@S' ... N-bit unsigned immediate at bit S. */ | |
625 | sign = false; | |
626 | goto print_imm; | |
627 | print_imm: | |
b0423163 | 628 | n = strtol (oparg + 1, (char **)&oparg, 10); |
8b7419c4 CM |
629 | if (*oparg != '@') |
630 | goto undefined_modifier; | |
b0423163 | 631 | s = strtol (oparg + 1, (char **)&oparg, 10); |
8b7419c4 CM |
632 | oparg--; |
633 | ||
634 | if (!sign) | |
15543290 TO |
635 | print (info->stream, dis_style_immediate, "%lu", |
636 | (unsigned long)EXTRACT_U_IMM (n, s, l)); | |
8b7419c4 | 637 | else |
15543290 TO |
638 | print (info->stream, dis_style_immediate, "%li", |
639 | (signed long)EXTRACT_S_IMM (n, s, l)); | |
8b7419c4 CM |
640 | break; |
641 | default: | |
642 | goto undefined_modifier; | |
643 | } | |
644 | } | |
645 | break; | |
e23eba97 | 646 | default: |
8b7419c4 | 647 | undefined_modifier: |
e23eba97 | 648 | /* xgettext:c-format */ |
49d31dc9 AB |
649 | print (info->stream, dis_style_text, |
650 | _("# internal error, undefined modifier (%c)"), | |
437e2ff1 | 651 | *opargStart); |
e23eba97 NC |
652 | return; |
653 | } | |
654 | } | |
655 | } | |
656 | ||
657 | /* Print the RISC-V instruction at address MEMADDR in debugged memory, | |
658 | on using INFO. Returns length of the instruction, in bytes. | |
659 | BIGENDIAN must be 1 if this is big-endian code, 0 if | |
660 | this is little-endian code. */ | |
661 | ||
662 | static int | |
97f006bc TO |
663 | riscv_disassemble_insn (bfd_vma memaddr, |
664 | insn_t word, | |
665 | const bfd_byte *packet, | |
666 | disassemble_info *info) | |
e23eba97 NC |
667 | { |
668 | const struct riscv_opcode *op; | |
354c1c09 | 669 | static bool init = false; |
e23eba97 | 670 | static const struct riscv_opcode *riscv_hash[OP_MASK_OP + 1]; |
26e91972 | 671 | struct riscv_private_data *pd = info->private_data; |
0655669b JB |
672 | int insnlen, i; |
673 | bool printed; | |
e23eba97 NC |
674 | |
675 | #define OP_HASH_IDX(i) ((i) & (riscv_insn_length (i) == 2 ? 0x3 : OP_MASK_OP)) | |
676 | ||
677 | /* Build a hash table to shorten the search time. */ | |
678 | if (! init) | |
679 | { | |
680 | for (op = riscv_opcodes; op->name; op++) | |
681 | if (!riscv_hash[OP_HASH_IDX (op->match)]) | |
682 | riscv_hash[OP_HASH_IDX (op->match)] = op; | |
683 | ||
354c1c09 | 684 | init = true; |
e23eba97 NC |
685 | } |
686 | ||
e23eba97 NC |
687 | insnlen = riscv_insn_length (word); |
688 | ||
d7560e2d JW |
689 | /* RISC-V instructions are always little-endian. */ |
690 | info->endian_code = BFD_ENDIAN_LITTLE; | |
691 | ||
e23eba97 NC |
692 | info->bytes_per_chunk = insnlen % 4 == 0 ? 4 : 2; |
693 | info->bytes_per_line = 8; | |
d7560e2d JW |
694 | /* We don't support constant pools, so this must be code. */ |
695 | info->display_endian = info->endian_code; | |
e23eba97 NC |
696 | info->insn_info_valid = 1; |
697 | info->branch_delay_insns = 0; | |
698 | info->data_size = 0; | |
699 | info->insn_type = dis_nonbranch; | |
700 | info->target = 0; | |
701 | info->target2 = 0; | |
702 | ||
703 | op = riscv_hash[OP_HASH_IDX (word)]; | |
704 | if (op != NULL) | |
705 | { | |
2922d21d AW |
706 | /* If XLEN is not known, get its value from the ELF class. */ |
707 | if (info->mach == bfd_mach_riscv64) | |
708 | xlen = 64; | |
709 | else if (info->mach == bfd_mach_riscv32) | |
710 | xlen = 32; | |
711 | else if (info->section != NULL) | |
e23eba97 NC |
712 | { |
713 | Elf_Internal_Ehdr *ehdr = elf_elfheader (info->section->owner); | |
714 | xlen = ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? 64 : 32; | |
715 | } | |
716 | ||
2b8fd839 | 717 | /* If arch has the Zfinx extension, replace FPR with GPR. */ |
1469f944 | 718 | if (riscv_subset_supports (&riscv_rps_dis, "zfinx")) |
3d5d6bd5 | 719 | riscv_fpr_names = riscv_gpr_names; |
40f1a1a4 NC |
720 | else |
721 | riscv_fpr_names = riscv_gpr_names == riscv_gpr_names_abi ? | |
722 | riscv_fpr_names_abi : riscv_fpr_names_numeric; | |
de83e514 | 723 | |
e23eba97 NC |
724 | for (; op->name; op++) |
725 | { | |
726 | /* Does the opcode match? */ | |
727 | if (! (op->match_func) (op, word)) | |
728 | continue; | |
729 | /* Is this a pseudo-instruction and may we print it as such? */ | |
730 | if (no_aliases && (op->pinfo & INSN_ALIAS)) | |
731 | continue; | |
732 | /* Is this instruction restricted to a certain value of XLEN? */ | |
43135d3b | 733 | if ((op->xlen_requirement != 0) && (op->xlen_requirement != xlen)) |
e23eba97 | 734 | continue; |
2b8fd839 | 735 | /* Is this instruction supported by the current architecture? */ |
f786c359 NC |
736 | if (!riscv_multi_subset_supports (&riscv_rps_dis, op->insn_class)) |
737 | continue; | |
738 | ||
e23eba97 | 739 | /* It's a match. */ |
49d31dc9 AB |
740 | (*info->fprintf_styled_func) (info->stream, dis_style_mnemonic, |
741 | "%s", op->name); | |
e23eba97 NC |
742 | print_insn_args (op->args, word, memaddr, info); |
743 | ||
744 | /* Try to disassemble multi-instruction addressing sequences. */ | |
8fe1be5f | 745 | if (pd->to_print_addr) |
e23eba97 NC |
746 | { |
747 | info->target = pd->print_addr; | |
49d31dc9 AB |
748 | (*info->fprintf_styled_func) |
749 | (info->stream, dis_style_comment_start, " # "); | |
e23eba97 | 750 | (*info->print_address_func) (info->target, info); |
8fe1be5f | 751 | pd->to_print_addr = false; |
e23eba97 NC |
752 | } |
753 | ||
eb41b248 JW |
754 | /* Finish filling out insn_info fields. */ |
755 | switch (op->pinfo & INSN_TYPE) | |
756 | { | |
757 | case INSN_BRANCH: | |
758 | info->insn_type = dis_branch; | |
759 | break; | |
760 | case INSN_CONDBRANCH: | |
761 | info->insn_type = dis_condbranch; | |
762 | break; | |
763 | case INSN_JSR: | |
764 | info->insn_type = dis_jsr; | |
765 | break; | |
766 | case INSN_DREF: | |
767 | info->insn_type = dis_dref; | |
768 | break; | |
769 | default: | |
770 | break; | |
771 | } | |
772 | ||
773 | if (op->pinfo & INSN_DATA_SIZE) | |
774 | { | |
775 | int size = ((op->pinfo & INSN_DATA_SIZE) | |
776 | >> INSN_DATA_SIZE_SHIFT); | |
777 | info->data_size = 1 << (size - 1); | |
778 | } | |
779 | ||
e23eba97 NC |
780 | return insnlen; |
781 | } | |
782 | } | |
783 | ||
0655669b JB |
784 | /* We did not find a match, so just print the instruction bits in |
785 | the shape of an assembler .insn directive. */ | |
e23eba97 | 786 | info->insn_type = dis_noninsn; |
0655669b JB |
787 | (*info->fprintf_styled_func) |
788 | (info->stream, dis_style_assembler_directive, ".insn"); | |
789 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "\t"); | |
790 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, | |
791 | "%d", insnlen); | |
792 | (*info->fprintf_styled_func) (info->stream, dis_style_text, ", "); | |
793 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, "0x"); | |
794 | for (i = insnlen, printed = false; i >= 2; ) | |
6a7f5766 | 795 | { |
0655669b JB |
796 | i -= 2; |
797 | word = bfd_get_bits (packet + i, 16, false); | |
798 | if (!word && !printed) | |
799 | continue; | |
800 | ||
49d31dc9 | 801 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, |
0655669b JB |
802 | "%04x", (unsigned int) word); |
803 | printed = true; | |
6a7f5766 | 804 | } |
0655669b | 805 | |
e23eba97 NC |
806 | return insnlen; |
807 | } | |
808 | ||
9b9b1092 NC |
809 | /* Return true if we find the suitable mapping symbol, |
810 | and also update the STATE. Otherwise, return false. */ | |
811 | ||
812 | static bool | |
813 | riscv_get_map_state (int n, | |
814 | enum riscv_seg_mstate *state, | |
815 | struct disassemble_info *info) | |
816 | { | |
817 | const char *name; | |
818 | ||
819 | /* If the symbol is in a different section, ignore it. */ | |
820 | if (info->section != NULL | |
821 | && info->section != info->symtab[n]->section) | |
822 | return false; | |
823 | ||
824 | name = bfd_asymbol_name(info->symtab[n]); | |
825 | if (strcmp (name, "$x") == 0) | |
826 | *state = MAP_INSN; | |
827 | else if (strcmp (name, "$d") == 0) | |
828 | *state = MAP_DATA; | |
40f1a1a4 NC |
829 | else if (strncmp (name, "$xrv", 4) == 0) |
830 | { | |
831 | *state = MAP_INSN; | |
832 | riscv_release_subset_list (&riscv_subsets); | |
833 | riscv_parse_subset (&riscv_rps_dis, name + 2); | |
834 | } | |
9b9b1092 NC |
835 | else |
836 | return false; | |
837 | ||
838 | return true; | |
839 | } | |
840 | ||
841 | /* Check the sorted symbol table (sorted by the symbol value), find the | |
842 | suitable mapping symbols. */ | |
843 | ||
844 | static enum riscv_seg_mstate | |
845 | riscv_search_mapping_symbol (bfd_vma memaddr, | |
846 | struct disassemble_info *info) | |
847 | { | |
848 | enum riscv_seg_mstate mstate; | |
849 | bool from_last_map_symbol; | |
850 | bool found = false; | |
851 | int symbol = -1; | |
852 | int n; | |
853 | ||
c2f60ac5 KC |
854 | /* Return the last map state if the address is still within the range of the |
855 | last mapping symbol. */ | |
856 | if (last_map_section == info->section | |
857 | && (memaddr < last_map_symbol_boundary)) | |
858 | return last_map_state; | |
859 | ||
860 | last_map_section = info->section; | |
861 | ||
9b9b1092 NC |
862 | /* Decide whether to print the data or instruction by default, in case |
863 | we can not find the corresponding mapping symbols. */ | |
864 | mstate = MAP_DATA; | |
865 | if ((info->section | |
866 | && info->section->flags & SEC_CODE) | |
867 | || !info->section) | |
868 | mstate = MAP_INSN; | |
869 | ||
870 | if (info->symtab_size == 0 | |
871 | || bfd_asymbol_flavour (*info->symtab) != bfd_target_elf_flavour) | |
872 | return mstate; | |
873 | ||
874 | /* Reset the last_map_symbol if we start to dump a new section. */ | |
875 | if (memaddr <= 0) | |
876 | last_map_symbol = -1; | |
877 | ||
878 | /* If the last stop offset is different from the current one, then | |
879 | don't use the last_map_symbol to search. We usually reset the | |
880 | info->stop_offset when handling a new section. */ | |
881 | from_last_map_symbol = (last_map_symbol >= 0 | |
882 | && info->stop_offset == last_stop_offset); | |
883 | ||
884 | /* Start scanning at the start of the function, or wherever | |
885 | we finished last time. */ | |
886 | n = info->symtab_pos + 1; | |
887 | if (from_last_map_symbol && n >= last_map_symbol) | |
888 | n = last_map_symbol; | |
889 | ||
890 | /* Find the suitable mapping symbol to dump. */ | |
891 | for (; n < info->symtab_size; n++) | |
892 | { | |
893 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
894 | /* We have searched all possible symbols in the range. */ | |
895 | if (addr > memaddr) | |
896 | break; | |
897 | if (riscv_get_map_state (n, &mstate, info)) | |
898 | { | |
899 | symbol = n; | |
900 | found = true; | |
901 | /* Do not stop searching, in case there are some mapping | |
902 | symbols have the same value, but have different names. | |
903 | Use the last one. */ | |
904 | } | |
905 | } | |
906 | ||
907 | /* We can not find the suitable mapping symbol above. Therefore, we | |
908 | look forwards and try to find it again, but don't go pass the start | |
909 | of the section. Otherwise a data section without mapping symbols | |
910 | can pick up a text mapping symbol of a preceeding section. */ | |
911 | if (!found) | |
912 | { | |
913 | n = info->symtab_pos; | |
914 | if (from_last_map_symbol && n >= last_map_symbol) | |
915 | n = last_map_symbol; | |
916 | ||
917 | for (; n >= 0; n--) | |
918 | { | |
919 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
920 | /* We have searched all possible symbols in the range. */ | |
921 | if (addr < (info->section ? info->section->vma : 0)) | |
922 | break; | |
923 | /* Stop searching once we find the closed mapping symbol. */ | |
924 | if (riscv_get_map_state (n, &mstate, info)) | |
925 | { | |
926 | symbol = n; | |
927 | found = true; | |
928 | break; | |
929 | } | |
930 | } | |
931 | } | |
932 | ||
c2f60ac5 KC |
933 | if (found) |
934 | { | |
935 | /* Find the next mapping symbol to determine the boundary of this mapping | |
936 | symbol. */ | |
937 | ||
938 | bool found_next = false; | |
939 | /* Try to found next mapping symbol. */ | |
940 | for (n = symbol + 1; n < info->symtab_size; n++) | |
941 | { | |
942 | if (info->symtab[symbol]->section != info->symtab[n]->section) | |
943 | continue; | |
944 | ||
945 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
946 | const char *sym_name = bfd_asymbol_name(info->symtab[n]); | |
947 | if (sym_name[0] == '$' && (sym_name[1] == 'x' || sym_name[1] == 'd')) | |
948 | { | |
949 | /* The next mapping symbol has been found, and it represents the | |
950 | boundary of this mapping symbol. */ | |
951 | found_next = true; | |
952 | last_map_symbol_boundary = addr; | |
953 | break; | |
954 | } | |
955 | } | |
956 | ||
957 | /* No further mapping symbol has been found, indicating that the boundary | |
958 | of the current mapping symbol is the end of this section. */ | |
959 | if (!found_next) | |
960 | last_map_symbol_boundary = info->section->vma + info->section->size; | |
961 | } | |
962 | ||
9b9b1092 NC |
963 | /* Save the information for next use. */ |
964 | last_map_symbol = symbol; | |
965 | last_stop_offset = info->stop_offset; | |
966 | ||
967 | return mstate; | |
968 | } | |
969 | ||
970 | /* Decide which data size we should print. */ | |
971 | ||
972 | static bfd_vma | |
973 | riscv_data_length (bfd_vma memaddr, | |
974 | disassemble_info *info) | |
975 | { | |
976 | bfd_vma length; | |
977 | bool found = false; | |
978 | ||
979 | length = 4; | |
980 | if (info->symtab_size != 0 | |
981 | && bfd_asymbol_flavour (*info->symtab) == bfd_target_elf_flavour | |
982 | && last_map_symbol >= 0) | |
983 | { | |
984 | int n; | |
985 | enum riscv_seg_mstate m = MAP_NONE; | |
986 | for (n = last_map_symbol + 1; n < info->symtab_size; n++) | |
987 | { | |
988 | bfd_vma addr = bfd_asymbol_value (info->symtab[n]); | |
989 | if (addr > memaddr | |
990 | && riscv_get_map_state (n, &m, info)) | |
991 | { | |
992 | if (addr - memaddr < length) | |
993 | length = addr - memaddr; | |
994 | found = true; | |
995 | break; | |
996 | } | |
997 | } | |
998 | } | |
999 | if (!found) | |
1000 | { | |
1001 | /* Do not set the length which exceeds the section size. */ | |
1002 | bfd_vma offset = info->section->vma + info->section->size; | |
1003 | offset -= memaddr; | |
1004 | length = (offset < length) ? offset : length; | |
1005 | } | |
1006 | length = length == 3 ? 2 : length; | |
1007 | return length; | |
1008 | } | |
1009 | ||
1010 | /* Dump the data contents. */ | |
1011 | ||
1012 | static int | |
1013 | riscv_disassemble_data (bfd_vma memaddr ATTRIBUTE_UNUSED, | |
1014 | insn_t data, | |
97f006bc | 1015 | const bfd_byte *packet ATTRIBUTE_UNUSED, |
9b9b1092 NC |
1016 | disassemble_info *info) |
1017 | { | |
1018 | info->display_endian = info->endian; | |
1019 | ||
1020 | switch (info->bytes_per_chunk) | |
1021 | { | |
1022 | case 1: | |
1023 | info->bytes_per_line = 6; | |
49d31dc9 | 1024 | (*info->fprintf_styled_func) |
f3a80235 TO |
1025 | (info->stream, dis_style_assembler_directive, ".byte"); |
1026 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "\t"); | |
1027 | (*info->fprintf_styled_func) (info->stream, dis_style_immediate, | |
1028 | "0x%02x", (unsigned)data); | |
9b9b1092 NC |
1029 | break; |
1030 | case 2: | |
1031 | info->bytes_per_line = 8; | |
49d31dc9 | 1032 | (*info->fprintf_styled_func) |
f3a80235 TO |
1033 | (info->stream, dis_style_assembler_directive, ".short"); |
1034 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "\t"); | |
49d31dc9 | 1035 | (*info->fprintf_styled_func) |
e0b004c5 | 1036 | (info->stream, dis_style_immediate, "0x%04x", (unsigned) data); |
9b9b1092 NC |
1037 | break; |
1038 | case 4: | |
1039 | info->bytes_per_line = 8; | |
49d31dc9 | 1040 | (*info->fprintf_styled_func) |
f3a80235 TO |
1041 | (info->stream, dis_style_assembler_directive, ".word"); |
1042 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "\t"); | |
49d31dc9 | 1043 | (*info->fprintf_styled_func) |
e0b004c5 TO |
1044 | (info->stream, dis_style_immediate, "0x%08lx", |
1045 | (unsigned long) data); | |
9b9b1092 NC |
1046 | break; |
1047 | case 8: | |
1048 | info->bytes_per_line = 8; | |
49d31dc9 | 1049 | (*info->fprintf_styled_func) |
f3a80235 TO |
1050 | (info->stream, dis_style_assembler_directive, ".dword"); |
1051 | (*info->fprintf_styled_func) (info->stream, dis_style_text, "\t"); | |
49d31dc9 AB |
1052 | (*info->fprintf_styled_func) |
1053 | (info->stream, dis_style_immediate, "0x%016llx", | |
1054 | (unsigned long long) data); | |
9b9b1092 NC |
1055 | break; |
1056 | default: | |
1057 | abort (); | |
1058 | } | |
1059 | return info->bytes_per_chunk; | |
1060 | } | |
1061 | ||
26e91972 NC |
1062 | static bool |
1063 | riscv_init_disasm_info (struct disassemble_info *info) | |
1064 | { | |
1065 | int i; | |
1066 | ||
1067 | struct riscv_private_data *pd = | |
1068 | xcalloc (1, sizeof (struct riscv_private_data)); | |
1069 | pd->gp = 0; | |
1070 | pd->print_addr = 0; | |
1071 | for (i = 0; i < (int) ARRAY_SIZE (pd->hi_addr); i++) | |
1072 | pd->hi_addr[i] = -1; | |
1073 | pd->to_print_addr = false; | |
1074 | pd->has_gp = false; | |
1075 | ||
1076 | for (i = 0; i < info->symtab_size; i++) | |
1077 | { | |
1078 | asymbol *sym = info->symtab[i]; | |
1079 | if (strcmp (bfd_asymbol_name (sym), RISCV_GP_SYMBOL) == 0) | |
1080 | { | |
1081 | pd->gp = bfd_asymbol_value (sym); | |
1082 | pd->has_gp = true; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | info->private_data = pd; | |
1087 | return true; | |
1088 | } | |
1089 | ||
e23eba97 NC |
1090 | int |
1091 | print_insn_riscv (bfd_vma memaddr, struct disassemble_info *info) | |
1092 | { | |
73e30e72 | 1093 | bfd_byte packet[RISCV_MAX_INSN_LEN]; |
e23eba97 | 1094 | insn_t insn = 0; |
9b9b1092 | 1095 | bfd_vma dump_size; |
e23eba97 | 1096 | int status; |
9b9b1092 | 1097 | enum riscv_seg_mstate mstate; |
97f006bc TO |
1098 | int (*riscv_disassembler) (bfd_vma, insn_t, const bfd_byte *, |
1099 | struct disassemble_info *); | |
e23eba97 NC |
1100 | |
1101 | if (info->disassembler_options != NULL) | |
1102 | { | |
1103 | parse_riscv_dis_options (info->disassembler_options); | |
1104 | /* Avoid repeatedly parsing the options. */ | |
1105 | info->disassembler_options = NULL; | |
1106 | } | |
1107 | else if (riscv_gpr_names == NULL) | |
1108 | set_default_riscv_dis_options (); | |
1109 | ||
26e91972 NC |
1110 | if (info->private_data == NULL && !riscv_init_disasm_info (info)) |
1111 | return -1; | |
1112 | ||
9b9b1092 | 1113 | mstate = riscv_search_mapping_symbol (memaddr, info); |
c2f60ac5 KC |
1114 | /* Save the last mapping state. */ |
1115 | last_map_state = mstate; | |
9b9b1092 NC |
1116 | |
1117 | /* Set the size to dump. */ | |
1118 | if (mstate == MAP_DATA | |
1119 | && (info->flags & DISASSEMBLE_DATA) == 0) | |
1120 | { | |
1121 | dump_size = riscv_data_length (memaddr, info); | |
1122 | info->bytes_per_chunk = dump_size; | |
1123 | riscv_disassembler = riscv_disassemble_data; | |
1124 | } | |
1125 | else | |
e23eba97 | 1126 | { |
9b9b1092 NC |
1127 | /* Get the first 2-bytes to check the lenghth of instruction. */ |
1128 | status = (*info->read_memory_func) (memaddr, packet, 2, info); | |
e23eba97 NC |
1129 | if (status != 0) |
1130 | { | |
e23eba97 | 1131 | (*info->memory_error_func) (status, memaddr, info); |
e43d8768 | 1132 | return -1; |
e23eba97 | 1133 | } |
9b9b1092 NC |
1134 | insn = (insn_t) bfd_getl16 (packet); |
1135 | dump_size = riscv_insn_length (insn); | |
1136 | riscv_disassembler = riscv_disassemble_insn; | |
1137 | } | |
e23eba97 | 1138 | |
9b9b1092 NC |
1139 | /* Fetch the instruction to dump. */ |
1140 | status = (*info->read_memory_func) (memaddr, packet, dump_size, info); | |
1141 | if (status != 0) | |
1142 | { | |
1143 | (*info->memory_error_func) (status, memaddr, info); | |
e43d8768 | 1144 | return -1; |
e23eba97 | 1145 | } |
9b9b1092 | 1146 | insn = (insn_t) bfd_get_bits (packet, dump_size * 8, false); |
e23eba97 | 1147 | |
97f006bc | 1148 | return (*riscv_disassembler) (memaddr, insn, packet, info); |
e23eba97 NC |
1149 | } |
1150 | ||
8152e040 NC |
1151 | disassembler_ftype |
1152 | riscv_get_disassembler (bfd *abfd) | |
1153 | { | |
f786c359 NC |
1154 | const char *default_arch = "rv64gc"; |
1155 | ||
16089f32 | 1156 | if (abfd && bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
8152e040 | 1157 | { |
16089f32 TH |
1158 | const char *sec_name = get_elf_backend_data (abfd)->obj_attrs_section; |
1159 | if (bfd_get_section_by_name (abfd, sec_name) != NULL) | |
f786c359 | 1160 | { |
16089f32 TH |
1161 | obj_attribute *attr = elf_known_obj_attributes_proc (abfd); |
1162 | unsigned int Tag_a = Tag_RISCV_priv_spec; | |
1163 | unsigned int Tag_b = Tag_RISCV_priv_spec_minor; | |
1164 | unsigned int Tag_c = Tag_RISCV_priv_spec_revision; | |
1165 | riscv_get_priv_spec_class_from_numbers (attr[Tag_a].i, | |
1166 | attr[Tag_b].i, | |
1167 | attr[Tag_c].i, | |
1168 | &default_priv_spec); | |
1169 | default_arch = attr[Tag_RISCV_arch].s; | |
f786c359 | 1170 | } |
8152e040 | 1171 | } |
f786c359 NC |
1172 | |
1173 | riscv_release_subset_list (&riscv_subsets); | |
1174 | riscv_parse_subset (&riscv_rps_dis, default_arch); | |
1175 | return print_insn_riscv; | |
8152e040 NC |
1176 | } |
1177 | ||
884b49e3 AB |
1178 | /* Prevent use of the fake labels that are generated as part of the DWARF |
1179 | and for relaxable relocations in the assembler. */ | |
1180 | ||
78933a4a | 1181 | bool |
884b49e3 AB |
1182 | riscv_symbol_is_valid (asymbol * sym, |
1183 | struct disassemble_info * info ATTRIBUTE_UNUSED) | |
1184 | { | |
1185 | const char * name; | |
1186 | ||
1187 | if (sym == NULL) | |
78933a4a | 1188 | return false; |
884b49e3 AB |
1189 | |
1190 | name = bfd_asymbol_name (sym); | |
1191 | ||
9b9b1092 NC |
1192 | return (strcmp (name, RISCV_FAKE_LABEL_NAME) != 0 |
1193 | && !riscv_elf_is_mapping_symbols (name)); | |
884b49e3 | 1194 | } |
3a337a86 AB |
1195 | \f |
1196 | ||
1197 | /* Indices into option argument vector for options accepting an argument. | |
1198 | Use RISCV_OPTION_ARG_NONE for options accepting no argument. */ | |
1199 | ||
1200 | typedef enum | |
1201 | { | |
1202 | RISCV_OPTION_ARG_NONE = -1, | |
1203 | RISCV_OPTION_ARG_PRIV_SPEC, | |
1204 | ||
1205 | RISCV_OPTION_ARG_COUNT | |
1206 | } riscv_option_arg_t; | |
1207 | ||
1208 | /* Valid RISCV disassembler options. */ | |
1209 | ||
1210 | static struct | |
1211 | { | |
1212 | const char *name; | |
1213 | const char *description; | |
1214 | riscv_option_arg_t arg; | |
1215 | } riscv_options[] = | |
1216 | { | |
1217 | { "numeric", | |
1218 | N_("Print numeric register names, rather than ABI names."), | |
1219 | RISCV_OPTION_ARG_NONE }, | |
1220 | { "no-aliases", | |
1221 | N_("Disassemble only into canonical instructions."), | |
1222 | RISCV_OPTION_ARG_NONE }, | |
1223 | { "priv-spec=", | |
1224 | N_("Print the CSR according to the chosen privilege spec."), | |
1225 | RISCV_OPTION_ARG_PRIV_SPEC } | |
1226 | }; | |
1227 | ||
1228 | /* Build the structure representing valid RISCV disassembler options. | |
1229 | This is done dynamically for maintenance ease purpose; a static | |
1230 | initializer would be unreadable. */ | |
1231 | ||
1232 | const disasm_options_and_args_t * | |
1233 | disassembler_options_riscv (void) | |
1234 | { | |
1235 | static disasm_options_and_args_t *opts_and_args; | |
1236 | ||
1237 | if (opts_and_args == NULL) | |
1238 | { | |
1239 | size_t num_options = ARRAY_SIZE (riscv_options); | |
1240 | size_t num_args = RISCV_OPTION_ARG_COUNT; | |
1241 | disasm_option_arg_t *args; | |
1242 | disasm_options_t *opts; | |
1243 | size_t i, priv_spec_count; | |
1244 | ||
1245 | args = XNEWVEC (disasm_option_arg_t, num_args + 1); | |
1246 | ||
1247 | args[RISCV_OPTION_ARG_PRIV_SPEC].name = "SPEC"; | |
1248 | priv_spec_count = PRIV_SPEC_CLASS_DRAFT - PRIV_SPEC_CLASS_NONE - 1; | |
1249 | args[RISCV_OPTION_ARG_PRIV_SPEC].values | |
1250 | = XNEWVEC (const char *, priv_spec_count + 1); | |
1251 | for (i = 0; i < priv_spec_count; i++) | |
1252 | args[RISCV_OPTION_ARG_PRIV_SPEC].values[i] | |
1253 | = riscv_priv_specs[i].name; | |
1254 | /* The array we return must be NULL terminated. */ | |
1255 | args[RISCV_OPTION_ARG_PRIV_SPEC].values[i] = NULL; | |
1256 | ||
1257 | /* The array we return must be NULL terminated. */ | |
1258 | args[num_args].name = NULL; | |
1259 | args[num_args].values = NULL; | |
1260 | ||
1261 | opts_and_args = XNEW (disasm_options_and_args_t); | |
1262 | opts_and_args->args = args; | |
1263 | ||
1264 | opts = &opts_and_args->options; | |
1265 | opts->name = XNEWVEC (const char *, num_options + 1); | |
1266 | opts->description = XNEWVEC (const char *, num_options + 1); | |
1267 | opts->arg = XNEWVEC (const disasm_option_arg_t *, num_options + 1); | |
1268 | for (i = 0; i < num_options; i++) | |
1269 | { | |
1270 | opts->name[i] = riscv_options[i].name; | |
1271 | opts->description[i] = _(riscv_options[i].description); | |
1272 | if (riscv_options[i].arg != RISCV_OPTION_ARG_NONE) | |
1273 | opts->arg[i] = &args[riscv_options[i].arg]; | |
1274 | else | |
1275 | opts->arg[i] = NULL; | |
1276 | } | |
1277 | /* The array we return must be NULL terminated. */ | |
1278 | opts->name[i] = NULL; | |
1279 | opts->description[i] = NULL; | |
1280 | opts->arg[i] = NULL; | |
1281 | } | |
1282 | ||
1283 | return opts_and_args; | |
1284 | } | |
884b49e3 | 1285 | |
e23eba97 NC |
1286 | void |
1287 | print_riscv_disassembler_options (FILE *stream) | |
1288 | { | |
3a337a86 AB |
1289 | const disasm_options_and_args_t *opts_and_args; |
1290 | const disasm_option_arg_t *args; | |
1291 | const disasm_options_t *opts; | |
1292 | size_t max_len = 0; | |
1293 | size_t i; | |
1294 | size_t j; | |
1295 | ||
1296 | opts_and_args = disassembler_options_riscv (); | |
1297 | opts = &opts_and_args->options; | |
1298 | args = opts_and_args->args; | |
1299 | ||
e23eba97 | 1300 | fprintf (stream, _("\n\ |
3a337a86 | 1301 | The following RISC-V specific disassembler options are supported for use\n\ |
e23eba97 | 1302 | with the -M switch (multiple options should be separated by commas):\n")); |
3a337a86 | 1303 | fprintf (stream, "\n"); |
e23eba97 | 1304 | |
3a337a86 AB |
1305 | /* Compute the length of the longest option name. */ |
1306 | for (i = 0; opts->name[i] != NULL; i++) | |
1307 | { | |
1308 | size_t len = strlen (opts->name[i]); | |
8f595e9b | 1309 | |
3a337a86 AB |
1310 | if (opts->arg[i] != NULL) |
1311 | len += strlen (opts->arg[i]->name); | |
1312 | if (max_len < len) | |
1313 | max_len = len; | |
1314 | } | |
e23eba97 | 1315 | |
3a337a86 AB |
1316 | for (i = 0, max_len++; opts->name[i] != NULL; i++) |
1317 | { | |
1318 | fprintf (stream, " %s", opts->name[i]); | |
1319 | if (opts->arg[i] != NULL) | |
1320 | fprintf (stream, "%s", opts->arg[i]->name); | |
1321 | if (opts->description[i] != NULL) | |
1322 | { | |
1323 | size_t len = strlen (opts->name[i]); | |
1324 | ||
1325 | if (opts->arg != NULL && opts->arg[i] != NULL) | |
1326 | len += strlen (opts->arg[i]->name); | |
1327 | fprintf (stream, "%*c %s", (int) (max_len - len), ' ', | |
1328 | opts->description[i]); | |
1329 | } | |
1330 | fprintf (stream, "\n"); | |
1331 | } | |
1332 | ||
1333 | for (i = 0; args[i].name != NULL; i++) | |
1334 | { | |
9869e2e5 TO |
1335 | if (args[i].values == NULL) |
1336 | continue; | |
3a337a86 AB |
1337 | fprintf (stream, _("\n\ |
1338 | For the options above, the following values are supported for \"%s\":\n "), | |
1339 | args[i].name); | |
1340 | for (j = 0; args[i].values[j] != NULL; j++) | |
1341 | fprintf (stream, " %s", args[i].values[j]); | |
1342 | fprintf (stream, _("\n")); | |
1343 | } | |
e23eba97 NC |
1344 | |
1345 | fprintf (stream, _("\n")); | |
1346 | } | |
26e91972 NC |
1347 | |
1348 | void disassemble_free_riscv (struct disassemble_info *info ATTRIBUTE_UNUSED) | |
1349 | { | |
1350 | riscv_release_subset_list (&riscv_subsets); | |
1351 | } |