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49d45b20 JB |
1 | /* Target-dependent code for FT32. |
2 | ||
3 | Copyright (C) 2009-2015 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "frame.h" | |
22 | #include "frame-unwind.h" | |
23 | #include "frame-base.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "gdbcore.h" | |
28 | #include "value.h" | |
29 | #include "inferior.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
32 | #include "osabi.h" | |
33 | #include "language.h" | |
34 | #include "arch-utils.h" | |
35 | #include "regcache.h" | |
36 | #include "trad-frame.h" | |
37 | #include "dis-asm.h" | |
38 | #include "record.h" | |
39 | ||
49d45b20 JB |
40 | #include "ft32-tdep.h" |
41 | #include "gdb/sim-ft32.h" | |
42 | ||
43 | #define RAM_BIAS 0x800000 /* Bias added to RAM addresses. */ | |
44 | ||
45 | /* Local functions. */ | |
46 | ||
47 | extern void _initialize_ft32_tdep (void); | |
48 | ||
49 | /* Use an invalid address -1 as 'not available' marker. */ | |
50 | enum { REG_UNAVAIL = (CORE_ADDR) (-1) }; | |
51 | ||
52 | struct ft32_frame_cache | |
53 | { | |
54 | /* Base address of the frame */ | |
55 | CORE_ADDR base; | |
56 | /* Function this frame belongs to */ | |
57 | CORE_ADDR pc; | |
58 | /* Total size of this frame */ | |
59 | LONGEST framesize; | |
60 | /* Saved registers in this frame */ | |
61 | CORE_ADDR saved_regs[FT32_NUM_REGS]; | |
62 | /* Saved SP in this frame */ | |
63 | CORE_ADDR saved_sp; | |
64 | /* Has the new frame been LINKed. */ | |
65 | bfd_boolean established; | |
66 | }; | |
67 | ||
68 | /* Implement the "frame_align" gdbarch method. */ | |
69 | ||
70 | static CORE_ADDR | |
71 | ft32_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp) | |
72 | { | |
73 | /* Align to the size of an instruction (so that they can safely be | |
74 | pushed onto the stack. */ | |
75 | return sp & ~1; | |
76 | } | |
77 | ||
78 | /* Implement the "breakpoint_from_pc" gdbarch method. */ | |
79 | ||
80 | static const unsigned char * | |
81 | ft32_breakpoint_from_pc (struct gdbarch *gdbarch, | |
82 | CORE_ADDR *pcptr, int *lenptr) | |
83 | { | |
84 | static const gdb_byte breakpoint[] = { 0x02, 0x00, 0x34, 0x00 }; | |
85 | ||
86 | *lenptr = sizeof (breakpoint); | |
87 | return breakpoint; | |
88 | } | |
89 | ||
90 | /* FT32 register names. */ | |
91 | ||
92 | static const char *const ft32_register_names[] = | |
93 | { | |
94 | "fp", "sp", | |
95 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
96 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
97 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
98 | "r24", "r25", "r26", "r27", "r28", "cc", | |
99 | "pc" | |
100 | }; | |
101 | ||
102 | /* Implement the "register_name" gdbarch method. */ | |
103 | ||
104 | static const char * | |
105 | ft32_register_name (struct gdbarch *gdbarch, int reg_nr) | |
106 | { | |
107 | if (reg_nr < 0) | |
108 | return NULL; | |
109 | if (reg_nr >= FT32_NUM_REGS) | |
110 | return NULL; | |
111 | return ft32_register_names[reg_nr]; | |
112 | } | |
113 | ||
114 | /* Implement the "register_type" gdbarch method. */ | |
115 | ||
116 | static struct type * | |
117 | ft32_register_type (struct gdbarch *gdbarch, int reg_nr) | |
118 | { | |
119 | if (reg_nr == FT32_PC_REGNUM) | |
623fb775 | 120 | return gdbarch_tdep (gdbarch)->pc_type; |
49d45b20 JB |
121 | else if (reg_nr == FT32_SP_REGNUM || reg_nr == FT32_FP_REGNUM) |
122 | return builtin_type (gdbarch)->builtin_data_ptr; | |
123 | else | |
124 | return builtin_type (gdbarch)->builtin_int32; | |
125 | } | |
126 | ||
127 | /* Write into appropriate registers a function return value | |
128 | of type TYPE, given in virtual format. */ | |
129 | ||
130 | static void | |
131 | ft32_store_return_value (struct type *type, struct regcache *regcache, | |
132 | const gdb_byte *valbuf) | |
133 | { | |
134 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
135 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
136 | CORE_ADDR regval; | |
137 | int len = TYPE_LENGTH (type); | |
138 | ||
139 | /* Things always get returned in RET1_REGNUM, RET2_REGNUM. */ | |
140 | regval = extract_unsigned_integer (valbuf, len > 4 ? 4 : len, byte_order); | |
141 | regcache_cooked_write_unsigned (regcache, FT32_R0_REGNUM, regval); | |
142 | if (len > 4) | |
143 | { | |
144 | regval = extract_unsigned_integer (valbuf + 4, | |
145 | len - 4, byte_order); | |
146 | regcache_cooked_write_unsigned (regcache, FT32_R1_REGNUM, regval); | |
147 | } | |
148 | } | |
149 | ||
150 | /* Decode the instructions within the given address range. Decide | |
151 | when we must have reached the end of the function prologue. If a | |
152 | frame_info pointer is provided, fill in its saved_regs etc. | |
153 | ||
154 | Returns the address of the first instruction after the prologue. */ | |
155 | ||
156 | #define IS_PUSH(inst) (((inst) & 0xfff00000) == 0x84000000) | |
157 | #define PUSH_REG(inst) (FT32_R0_REGNUM + (((inst) >> 15) & 0x1f)) | |
158 | #define IS_LINK(inst) (((inst) & 0xffff0000) == 0x95d00000) | |
159 | #define LINK_SIZE(inst) ((inst) & 0xffff) | |
160 | ||
161 | static CORE_ADDR | |
162 | ft32_analyze_prologue (CORE_ADDR start_addr, CORE_ADDR end_addr, | |
163 | struct ft32_frame_cache *cache, | |
164 | struct gdbarch *gdbarch) | |
165 | { | |
166 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
167 | CORE_ADDR next_addr; | |
168 | ULONGEST inst, inst2; | |
169 | LONGEST offset; | |
170 | int regnum; | |
171 | ||
172 | cache->saved_regs[FT32_PC_REGNUM] = 0; | |
173 | cache->framesize = 0; | |
174 | ||
175 | if (start_addr >= end_addr) | |
176 | return end_addr; | |
177 | ||
178 | cache->established = 0; | |
179 | for (next_addr = start_addr; next_addr < end_addr; ) | |
180 | { | |
181 | inst = read_memory_unsigned_integer (next_addr, 4, byte_order); | |
182 | ||
183 | if (IS_PUSH (inst)) | |
184 | { | |
185 | regnum = PUSH_REG (inst); | |
186 | cache->framesize += 4; | |
187 | cache->saved_regs[regnum] = cache->framesize; | |
188 | next_addr += 4; | |
189 | } | |
190 | else | |
191 | break; | |
192 | } | |
193 | for (regnum = FT32_R0_REGNUM; regnum < FT32_PC_REGNUM; regnum++) | |
194 | { | |
195 | if (cache->saved_regs[regnum] != REG_UNAVAIL) | |
196 | cache->saved_regs[regnum] = cache->framesize - cache->saved_regs[regnum]; | |
197 | } | |
198 | cache->saved_regs[FT32_PC_REGNUM] = cache->framesize; | |
199 | ||
200 | /* It is a LINK? */ | |
201 | if (next_addr < end_addr) | |
202 | { | |
203 | inst = read_memory_unsigned_integer (next_addr, 4, byte_order); | |
204 | if (IS_LINK (inst)) | |
205 | { | |
206 | cache->established = 1; | |
207 | for (regnum = FT32_R0_REGNUM; regnum < FT32_PC_REGNUM; regnum++) | |
208 | { | |
209 | if (cache->saved_regs[regnum] != REG_UNAVAIL) | |
210 | cache->saved_regs[regnum] += 4; | |
211 | } | |
212 | cache->saved_regs[FT32_PC_REGNUM] = cache->framesize + 4; | |
213 | cache->saved_regs[FT32_FP_REGNUM] = 0; | |
214 | cache->framesize += LINK_SIZE (inst); | |
215 | next_addr += 4; | |
216 | } | |
217 | } | |
218 | ||
219 | return next_addr; | |
220 | } | |
221 | ||
222 | /* Find the end of function prologue. */ | |
223 | ||
224 | static CORE_ADDR | |
225 | ft32_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) | |
226 | { | |
227 | CORE_ADDR func_addr = 0, func_end = 0; | |
228 | const char *func_name; | |
229 | ||
230 | /* See if we can determine the end of the prologue via the symbol table. | |
231 | If so, then return either PC, or the PC after the prologue, whichever | |
232 | is greater. */ | |
233 | if (find_pc_partial_function (pc, &func_name, &func_addr, &func_end)) | |
234 | { | |
235 | CORE_ADDR post_prologue_pc | |
236 | = skip_prologue_using_sal (gdbarch, func_addr); | |
237 | if (post_prologue_pc != 0) | |
238 | return max (pc, post_prologue_pc); | |
239 | else | |
240 | { | |
241 | /* Can't determine prologue from the symbol table, need to examine | |
242 | instructions. */ | |
243 | struct symtab_and_line sal; | |
244 | struct symbol *sym; | |
245 | struct ft32_frame_cache cache; | |
246 | CORE_ADDR plg_end; | |
247 | ||
248 | memset (&cache, 0, sizeof cache); | |
249 | ||
250 | plg_end = ft32_analyze_prologue (func_addr, | |
251 | func_end, &cache, gdbarch); | |
252 | /* Found a function. */ | |
835a09d9 | 253 | sym = lookup_symbol (func_name, NULL, VAR_DOMAIN, NULL).symbol; |
49d45b20 JB |
254 | /* Don't use line number debug info for assembly source files. */ |
255 | if ((sym != NULL) && SYMBOL_LANGUAGE (sym) != language_asm) | |
256 | { | |
257 | sal = find_pc_line (func_addr, 0); | |
258 | if (sal.end && sal.end < func_end) | |
259 | { | |
260 | /* Found a line number, use it as end of prologue. */ | |
261 | return sal.end; | |
262 | } | |
263 | } | |
264 | /* No useable line symbol. Use result of prologue parsing method. */ | |
265 | return plg_end; | |
266 | } | |
267 | } | |
268 | ||
269 | /* No function symbol -- just return the PC. */ | |
270 | return pc; | |
271 | } | |
272 | ||
623fb775 | 273 | /* Implementation of `pointer_to_address' gdbarch method. |
274 | ||
275 | On FT32 address space zero is RAM, address space 1 is flash. | |
276 | RAM appears at address RAM_BIAS, flash at address 0. */ | |
277 | ||
278 | static CORE_ADDR | |
279 | ft32_pointer_to_address (struct gdbarch *gdbarch, | |
280 | struct type *type, const gdb_byte *buf) | |
281 | { | |
282 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
283 | CORE_ADDR addr | |
284 | = extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order); | |
285 | ||
286 | if (TYPE_ADDRESS_CLASS_1 (type)) | |
287 | return addr; | |
288 | else | |
289 | return addr | RAM_BIAS; | |
290 | } | |
291 | ||
292 | /* Implementation of `address_class_type_flags' gdbarch method. | |
293 | ||
294 | This method maps DW_AT_address_class attributes to a | |
295 | type_instance_flag_value. */ | |
296 | ||
297 | static int | |
298 | ft32_address_class_type_flags (int byte_size, int dwarf2_addr_class) | |
299 | { | |
300 | /* The value 1 of the DW_AT_address_class attribute corresponds to the | |
301 | __flash__ qualifier, meaning pointer to data in FT32 program memory. | |
302 | */ | |
303 | if (dwarf2_addr_class == 1) | |
304 | return TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1; | |
305 | return 0; | |
306 | } | |
307 | ||
308 | /* Implementation of `address_class_type_flags_to_name' gdbarch method. | |
309 | ||
310 | Convert a type_instance_flag_value to an address space qualifier. */ | |
311 | ||
312 | static const char* | |
313 | ft32_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags) | |
314 | { | |
315 | if (type_flags & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1) | |
316 | return "flash"; | |
317 | else | |
318 | return NULL; | |
319 | } | |
320 | ||
321 | /* Implementation of `address_class_name_to_type_flags' gdbarch method. | |
322 | ||
323 | Convert an address space qualifier to a type_instance_flag_value. */ | |
324 | ||
325 | static int | |
326 | ft32_address_class_name_to_type_flags (struct gdbarch *gdbarch, | |
327 | const char* name, | |
328 | int *type_flags_ptr) | |
329 | { | |
330 | if (strcmp (name, "flash") == 0) | |
331 | { | |
332 | *type_flags_ptr = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1; | |
333 | return 1; | |
334 | } | |
335 | else | |
336 | return 0; | |
337 | } | |
338 | ||
339 | ||
49d45b20 JB |
340 | /* Implement the "read_pc" gdbarch method. */ |
341 | ||
342 | static CORE_ADDR | |
343 | ft32_read_pc (struct regcache *regcache) | |
344 | { | |
345 | ULONGEST pc; | |
346 | ||
347 | regcache_cooked_read_unsigned (regcache, FT32_PC_REGNUM, &pc); | |
348 | return pc; | |
349 | } | |
350 | ||
351 | /* Implement the "write_pc" gdbarch method. */ | |
352 | ||
353 | static void | |
354 | ft32_write_pc (struct regcache *regcache, CORE_ADDR val) | |
355 | { | |
356 | regcache_cooked_write_unsigned (regcache, FT32_PC_REGNUM, val); | |
357 | } | |
358 | ||
359 | /* Implement the "unwind_sp" gdbarch method. */ | |
360 | ||
361 | static CORE_ADDR | |
362 | ft32_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
363 | { | |
364 | return frame_unwind_register_unsigned (next_frame, FT32_SP_REGNUM); | |
365 | } | |
366 | ||
367 | /* Given a return value in `regbuf' with a type `valtype', | |
368 | extract and copy its value into `valbuf'. */ | |
369 | ||
370 | static void | |
371 | ft32_extract_return_value (struct type *type, struct regcache *regcache, | |
372 | gdb_byte *dst) | |
373 | { | |
374 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
375 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
376 | bfd_byte *valbuf = dst; | |
377 | int len = TYPE_LENGTH (type); | |
378 | ULONGEST tmp; | |
379 | ||
380 | /* By using store_unsigned_integer we avoid having to do | |
381 | anything special for small big-endian values. */ | |
382 | regcache_cooked_read_unsigned (regcache, FT32_R0_REGNUM, &tmp); | |
383 | store_unsigned_integer (valbuf, (len > 4 ? len - 4 : len), byte_order, tmp); | |
384 | ||
385 | /* Ignore return values more than 8 bytes in size because the ft32 | |
386 | returns anything more than 8 bytes in the stack. */ | |
387 | if (len > 4) | |
388 | { | |
389 | regcache_cooked_read_unsigned (regcache, FT32_R1_REGNUM, &tmp); | |
390 | store_unsigned_integer (valbuf + len - 4, 4, byte_order, tmp); | |
391 | } | |
392 | } | |
393 | ||
394 | /* Implement the "return_value" gdbarch method. */ | |
395 | ||
396 | static enum return_value_convention | |
397 | ft32_return_value (struct gdbarch *gdbarch, struct value *function, | |
398 | struct type *valtype, struct regcache *regcache, | |
399 | gdb_byte *readbuf, const gdb_byte *writebuf) | |
400 | { | |
401 | if (TYPE_LENGTH (valtype) > 8) | |
402 | return RETURN_VALUE_STRUCT_CONVENTION; | |
403 | else | |
404 | { | |
405 | if (readbuf != NULL) | |
406 | ft32_extract_return_value (valtype, regcache, readbuf); | |
407 | if (writebuf != NULL) | |
408 | ft32_store_return_value (valtype, regcache, writebuf); | |
409 | return RETURN_VALUE_REGISTER_CONVENTION; | |
410 | } | |
411 | } | |
412 | ||
413 | /* Allocate and initialize a ft32_frame_cache object. */ | |
414 | ||
415 | static struct ft32_frame_cache * | |
416 | ft32_alloc_frame_cache (void) | |
417 | { | |
418 | struct ft32_frame_cache *cache; | |
419 | int i; | |
420 | ||
421 | cache = FRAME_OBSTACK_ZALLOC (struct ft32_frame_cache); | |
422 | ||
423 | for (i = 0; i < FT32_NUM_REGS; ++i) | |
424 | cache->saved_regs[i] = REG_UNAVAIL; | |
425 | ||
426 | return cache; | |
427 | } | |
428 | ||
429 | /* Populate a ft32_frame_cache object for this_frame. */ | |
430 | ||
431 | static struct ft32_frame_cache * | |
432 | ft32_frame_cache (struct frame_info *this_frame, void **this_cache) | |
433 | { | |
434 | struct ft32_frame_cache *cache; | |
435 | CORE_ADDR current_pc; | |
436 | int i; | |
437 | ||
438 | if (*this_cache) | |
439 | return *this_cache; | |
440 | ||
441 | cache = ft32_alloc_frame_cache (); | |
442 | *this_cache = cache; | |
443 | ||
444 | cache->base = get_frame_register_unsigned (this_frame, FT32_FP_REGNUM); | |
445 | if (cache->base == 0) | |
446 | return cache; | |
447 | ||
448 | cache->pc = get_frame_func (this_frame); | |
449 | current_pc = get_frame_pc (this_frame); | |
450 | if (cache->pc) | |
451 | { | |
452 | struct gdbarch *gdbarch = get_frame_arch (this_frame); | |
453 | ||
454 | ft32_analyze_prologue (cache->pc, current_pc, cache, gdbarch); | |
455 | if (!cache->established) | |
456 | cache->base = get_frame_register_unsigned (this_frame, FT32_SP_REGNUM); | |
457 | } | |
458 | ||
459 | cache->saved_sp = cache->base - 4; | |
460 | ||
461 | for (i = 0; i < FT32_NUM_REGS; ++i) | |
462 | if (cache->saved_regs[i] != REG_UNAVAIL) | |
463 | cache->saved_regs[i] = cache->base + cache->saved_regs[i]; | |
464 | ||
465 | return cache; | |
466 | } | |
467 | ||
468 | /* Implement the "unwind_pc" gdbarch method. */ | |
469 | ||
470 | static CORE_ADDR | |
471 | ft32_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
472 | { | |
473 | return frame_unwind_register_unsigned (next_frame, FT32_PC_REGNUM); | |
474 | } | |
475 | ||
476 | /* Given a GDB frame, determine the address of the calling function's | |
477 | frame. This will be used to create a new GDB frame struct. */ | |
478 | ||
479 | static void | |
480 | ft32_frame_this_id (struct frame_info *this_frame, | |
481 | void **this_prologue_cache, struct frame_id *this_id) | |
482 | { | |
483 | struct ft32_frame_cache *cache = ft32_frame_cache (this_frame, | |
484 | this_prologue_cache); | |
485 | ||
486 | /* This marks the outermost frame. */ | |
487 | if (cache->base == 0) | |
488 | return; | |
489 | ||
490 | *this_id = frame_id_build (cache->saved_sp, cache->pc); | |
491 | } | |
492 | ||
493 | /* Get the value of register regnum in the previous stack frame. */ | |
494 | ||
495 | static struct value * | |
496 | ft32_frame_prev_register (struct frame_info *this_frame, | |
497 | void **this_prologue_cache, int regnum) | |
498 | { | |
499 | struct ft32_frame_cache *cache = ft32_frame_cache (this_frame, | |
500 | this_prologue_cache); | |
501 | ||
502 | gdb_assert (regnum >= 0); | |
503 | ||
504 | if (regnum == FT32_SP_REGNUM && cache->saved_sp) | |
505 | return frame_unwind_got_constant (this_frame, regnum, cache->saved_sp); | |
506 | ||
507 | if (regnum < FT32_NUM_REGS && cache->saved_regs[regnum] != REG_UNAVAIL) | |
508 | return frame_unwind_got_memory (this_frame, regnum, | |
509 | RAM_BIAS | cache->saved_regs[regnum]); | |
510 | ||
511 | return frame_unwind_got_register (this_frame, regnum, regnum); | |
512 | } | |
513 | ||
514 | static const struct frame_unwind ft32_frame_unwind = | |
515 | { | |
516 | NORMAL_FRAME, | |
517 | default_frame_unwind_stop_reason, | |
518 | ft32_frame_this_id, | |
519 | ft32_frame_prev_register, | |
520 | NULL, | |
521 | default_frame_sniffer | |
522 | }; | |
523 | ||
524 | /* Return the base address of this_frame. */ | |
525 | ||
526 | static CORE_ADDR | |
527 | ft32_frame_base_address (struct frame_info *this_frame, void **this_cache) | |
528 | { | |
529 | struct ft32_frame_cache *cache = ft32_frame_cache (this_frame, | |
530 | this_cache); | |
531 | ||
532 | return cache->base; | |
533 | } | |
534 | ||
535 | static const struct frame_base ft32_frame_base = | |
536 | { | |
537 | &ft32_frame_unwind, | |
538 | ft32_frame_base_address, | |
539 | ft32_frame_base_address, | |
540 | ft32_frame_base_address | |
541 | }; | |
542 | ||
543 | static struct frame_id | |
544 | ft32_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) | |
545 | { | |
546 | CORE_ADDR sp = get_frame_register_unsigned (this_frame, FT32_SP_REGNUM); | |
547 | ||
548 | return frame_id_build (sp, get_frame_pc (this_frame)); | |
549 | } | |
550 | ||
551 | /* Allocate and initialize the ft32 gdbarch object. */ | |
552 | ||
553 | static struct gdbarch * | |
554 | ft32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
555 | { | |
556 | struct gdbarch *gdbarch; | |
557 | struct gdbarch_tdep *tdep; | |
623fb775 | 558 | struct type *void_type; |
559 | struct type *func_void_type; | |
49d45b20 JB |
560 | |
561 | /* If there is already a candidate, use it. */ | |
562 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
563 | if (arches != NULL) | |
564 | return arches->gdbarch; | |
565 | ||
566 | /* Allocate space for the new architecture. */ | |
567 | tdep = XNEW (struct gdbarch_tdep); | |
568 | gdbarch = gdbarch_alloc (&info, tdep); | |
569 | ||
623fb775 | 570 | /* Create a type for PC. We can't use builtin types here, as they may not |
571 | be defined. */ | |
572 | void_type = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); | |
573 | func_void_type = make_function_type (void_type, NULL); | |
574 | tdep->pc_type = arch_type (gdbarch, TYPE_CODE_PTR, 4, NULL); | |
575 | TYPE_TARGET_TYPE (tdep->pc_type) = func_void_type; | |
576 | TYPE_UNSIGNED (tdep->pc_type) = 1; | |
577 | TYPE_INSTANCE_FLAGS (tdep->pc_type) |= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1; | |
578 | ||
49d45b20 JB |
579 | set_gdbarch_read_pc (gdbarch, ft32_read_pc); |
580 | set_gdbarch_write_pc (gdbarch, ft32_write_pc); | |
581 | set_gdbarch_unwind_sp (gdbarch, ft32_unwind_sp); | |
582 | ||
583 | set_gdbarch_num_regs (gdbarch, FT32_NUM_REGS); | |
584 | set_gdbarch_sp_regnum (gdbarch, FT32_SP_REGNUM); | |
585 | set_gdbarch_pc_regnum (gdbarch, FT32_PC_REGNUM); | |
586 | set_gdbarch_register_name (gdbarch, ft32_register_name); | |
587 | set_gdbarch_register_type (gdbarch, ft32_register_type); | |
588 | ||
589 | set_gdbarch_return_value (gdbarch, ft32_return_value); | |
590 | ||
623fb775 | 591 | set_gdbarch_pointer_to_address (gdbarch, ft32_pointer_to_address); |
592 | ||
49d45b20 JB |
593 | set_gdbarch_skip_prologue (gdbarch, ft32_skip_prologue); |
594 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
595 | set_gdbarch_breakpoint_from_pc (gdbarch, ft32_breakpoint_from_pc); | |
596 | set_gdbarch_frame_align (gdbarch, ft32_frame_align); | |
597 | ||
598 | frame_base_set_default (gdbarch, &ft32_frame_base); | |
599 | ||
600 | /* Methods for saving / extracting a dummy frame's ID. The ID's | |
601 | stack address must match the SP value returned by | |
602 | PUSH_DUMMY_CALL, and saved by generic_save_dummy_frame_tos. */ | |
603 | set_gdbarch_dummy_id (gdbarch, ft32_dummy_id); | |
604 | ||
605 | set_gdbarch_unwind_pc (gdbarch, ft32_unwind_pc); | |
606 | ||
607 | set_gdbarch_print_insn (gdbarch, print_insn_ft32); | |
608 | ||
609 | /* Hook in ABI-specific overrides, if they have been registered. */ | |
610 | gdbarch_init_osabi (info, gdbarch); | |
611 | ||
612 | /* Hook in the default unwinders. */ | |
613 | frame_unwind_append_unwinder (gdbarch, &ft32_frame_unwind); | |
614 | ||
615 | /* Support simple overlay manager. */ | |
616 | set_gdbarch_overlay_update (gdbarch, simple_overlay_update); | |
617 | ||
623fb775 | 618 | set_gdbarch_address_class_type_flags (gdbarch, ft32_address_class_type_flags); |
619 | set_gdbarch_address_class_name_to_type_flags | |
620 | (gdbarch, ft32_address_class_name_to_type_flags); | |
621 | set_gdbarch_address_class_type_flags_to_name | |
622 | (gdbarch, ft32_address_class_type_flags_to_name); | |
623 | ||
49d45b20 JB |
624 | return gdbarch; |
625 | } | |
626 | ||
627 | /* Register this machine's init routine. */ | |
628 | ||
629 | void | |
630 | _initialize_ft32_tdep (void) | |
631 | { | |
632 | register_gdbarch_init (bfd_arch_ft32, ft32_gdbarch_init); | |
633 | } |