Commit | Line | Data |
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27fd2f50 Q |
1 | /* Target-dependent code for the S+core architecture, for GDB, |
2 | the GNU Debugger. | |
3 | ||
0b302171 | 4 | Copyright (C) 2006-2012 Free Software Foundation, Inc. |
27fd2f50 Q |
5 | |
6 | Contributed by Qinwei (qinwei@sunnorth.com.cn) | |
7 | Contributed by Ching-Peng Lin (cplin@sunplus.com) | |
8 | ||
9 | This file is part of GDB. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
27fd2f50 Q |
14 | (at your option) any later version. |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
27fd2f50 Q |
23 | |
24 | #include "defs.h" | |
25 | #include "gdb_assert.h" | |
26 | #include "inferior.h" | |
27 | #include "symtab.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcore.h" | |
30 | #include "target.h" | |
31 | #include "arch-utils.h" | |
32 | #include "regcache.h" | |
5f814c3b | 33 | #include "regset.h" |
27fd2f50 Q |
34 | #include "dis-asm.h" |
35 | #include "frame-unwind.h" | |
36 | #include "frame-base.h" | |
37 | #include "trad-frame.h" | |
38 | #include "dwarf2-frame.h" | |
39 | #include "score-tdep.h" | |
40 | ||
5f814c3b DL |
41 | #define G_FLD(_i,_ms,_ls) \ |
42 | ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls))) | |
27fd2f50 Q |
43 | |
44 | typedef struct{ | |
c378eb4e MS |
45 | unsigned long long v; |
46 | unsigned long long raw; | |
47 | unsigned int len; | |
27fd2f50 Q |
48 | }inst_t; |
49 | ||
50 | struct score_frame_cache | |
51 | { | |
52 | CORE_ADDR base; | |
5e29c264 | 53 | CORE_ADDR fp; |
27fd2f50 Q |
54 | struct trad_frame_saved_reg *saved_regs; |
55 | }; | |
56 | ||
5f814c3b | 57 | static int target_mach = bfd_mach_score7; |
5e29c264 | 58 | |
27fd2f50 Q |
59 | static struct type * |
60 | score_register_type (struct gdbarch *gdbarch, int regnum) | |
61 | { | |
5f814c3b | 62 | gdb_assert (regnum >= 0 |
c378eb4e MS |
63 | && regnum < ((target_mach == bfd_mach_score7) |
64 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
df4df182 | 65 | return builtin_type (gdbarch)->builtin_uint32; |
27fd2f50 Q |
66 | } |
67 | ||
5f814c3b DL |
68 | static CORE_ADDR |
69 | score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
70 | { | |
71 | return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM); | |
72 | } | |
73 | ||
27fd2f50 | 74 | static CORE_ADDR |
30244cd8 | 75 | score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
27fd2f50 | 76 | { |
30244cd8 | 77 | return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM); |
27fd2f50 Q |
78 | } |
79 | ||
5f814c3b DL |
80 | static const char * |
81 | score7_register_name (struct gdbarch *gdbarch, int regnum) | |
27fd2f50 | 82 | { |
5f814c3b DL |
83 | const char *score_register_names[] = { |
84 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
85 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
86 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
87 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
88 | ||
89 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", | |
90 | "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR", | |
91 | "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN", | |
92 | "PREV", "DREG", "PC", "DSAVE", "COUNTER", | |
93 | "LDCR", "STCR", "CEH", "CEL", | |
94 | }; | |
95 | ||
96 | gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS); | |
97 | return score_register_names[regnum]; | |
27fd2f50 Q |
98 | } |
99 | ||
100 | static const char * | |
5f814c3b | 101 | score3_register_name (struct gdbarch *gdbarch, int regnum) |
27fd2f50 Q |
102 | { |
103 | const char *score_register_names[] = { | |
104 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
105 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
106 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
107 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
108 | ||
5f814c3b DL |
109 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", |
110 | "EPC", "EMA", "PREV", "DREG", "DSAVE", | |
111 | "COUNTER", "LDCR", "STCR", "CEH", "CEL", | |
112 | "", "", "PC", | |
27fd2f50 Q |
113 | }; |
114 | ||
5f814c3b | 115 | gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS); |
27fd2f50 Q |
116 | return score_register_names[regnum]; |
117 | } | |
118 | ||
5f814c3b | 119 | #if WITH_SIM |
27fd2f50 | 120 | static int |
e7faf938 | 121 | score_register_sim_regno (struct gdbarch *gdbarch, int regnum) |
27fd2f50 | 122 | { |
5f814c3b | 123 | gdb_assert (regnum >= 0 |
c378eb4e MS |
124 | && regnum < ((target_mach == bfd_mach_score7) |
125 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
126 | return regnum; |
127 | } | |
5f814c3b | 128 | #endif |
27fd2f50 Q |
129 | |
130 | static int | |
131 | score_print_insn (bfd_vma memaddr, struct disassemble_info *info) | |
132 | { | |
f52cb1b8 | 133 | if (info->endian == BFD_ENDIAN_BIG) |
27fd2f50 Q |
134 | return print_insn_big_score (memaddr, info); |
135 | else | |
136 | return print_insn_little_score (memaddr, info); | |
137 | } | |
138 | ||
5f814c3b DL |
139 | static inst_t * |
140 | score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, char *memblock) | |
141 | { | |
142 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
143 | static inst_t inst = { 0, 0, 0 }; | |
144 | char buf[SCORE_INSTLEN] = { 0 }; | |
145 | int big; | |
146 | int ret; | |
147 | ||
148 | if (target_has_execution && memblock != NULL) | |
149 | { | |
150 | /* Fetch instruction from local MEMBLOCK. */ | |
151 | memcpy (buf, memblock, SCORE_INSTLEN); | |
152 | } | |
153 | else | |
154 | { | |
155 | /* Fetch instruction from target. */ | |
156 | ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN); | |
157 | if (ret) | |
158 | { | |
a73c6dcd | 159 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
160 | __FILE__, __LINE__); |
161 | return 0; | |
162 | } | |
163 | } | |
164 | ||
165 | inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); | |
166 | inst.len = (inst.raw & 0x80008000) ? 4 : 2; | |
167 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
168 | big = (byte_order == BFD_ENDIAN_BIG); | |
169 | if (inst.len == 2) | |
170 | { | |
171 | if (big ^ ((addr & 0x2) == 2)) | |
172 | inst.v = G_FLD (inst.v, 29, 15); | |
173 | else | |
174 | inst.v = G_FLD (inst.v, 14, 0); | |
175 | } | |
176 | return &inst; | |
177 | } | |
178 | ||
179 | static inst_t * | |
180 | score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr, | |
181 | enum bfd_endian byte_order) | |
182 | { | |
183 | static inst_t inst = { 0, 0, 0 }; | |
184 | ||
185 | struct breakplace | |
186 | { | |
187 | int break_offset; | |
188 | int inst_len; | |
189 | }; | |
190 | /* raw table 1 (column 2, 3, 4) | |
191 | * 0 1 0 * # 2 | |
192 | * 0 1 1 0 # 3 | |
193 | 0 1 1 0 * # 6 | |
194 | table 2 (column 1, 2, 3) | |
195 | * 0 0 * * # 0, 4 | |
196 | 0 1 0 * * # 2 | |
197 | 1 1 0 * * # 6 | |
198 | */ | |
199 | ||
200 | static const struct breakplace bk_table[16] = | |
201 | { | |
202 | /* table 1 */ | |
203 | {0, 0}, | |
204 | {0, 0}, | |
205 | {0, 4}, | |
206 | {0, 6}, | |
207 | {0, 0}, | |
208 | {0, 0}, | |
209 | {-2, 6}, | |
210 | {0, 0}, | |
211 | /* table 2 */ | |
212 | {0, 2}, | |
213 | {0, 0}, | |
214 | {-2, 4}, | |
215 | {0, 0}, | |
216 | {0, 2}, | |
217 | {0, 0}, | |
218 | {-4, 6}, | |
219 | {0, 0} | |
220 | }; | |
221 | ||
222 | #define EXTRACT_LEN 2 | |
223 | CORE_ADDR adjust_pc = *pcptr & ~0x1; | |
224 | int inst_len; | |
225 | gdb_byte buf[5][EXTRACT_LEN] = | |
226 | { | |
227 | {'\0', '\0'}, | |
228 | {'\0', '\0'}, | |
229 | {'\0', '\0'}, | |
230 | {'\0', '\0'}, | |
231 | {'\0', '\0'} | |
232 | }; | |
233 | int ret; | |
234 | unsigned int raw; | |
235 | unsigned int cbits = 0; | |
236 | int bk_index; | |
237 | int i, count; | |
238 | ||
239 | inst.v = 0; | |
240 | inst.raw = 0; | |
241 | inst.len = 0; | |
242 | ||
243 | adjust_pc -= 4; | |
244 | for (i = 0; i < 5; i++) | |
245 | { | |
246 | ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN); | |
247 | if (ret != 0) | |
248 | { | |
249 | buf[i][0] = '\0'; | |
250 | buf[i][1] = '\0'; | |
251 | if (i == 2) | |
a73c6dcd | 252 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
253 | __FILE__, __LINE__); |
254 | } | |
255 | ||
256 | raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
257 | cbits = (cbits << 1) | (raw >> 15); | |
258 | } | |
259 | adjust_pc += 4; | |
260 | ||
261 | if (cbits & 0x4) | |
262 | { | |
263 | /* table 1 */ | |
264 | cbits = (cbits >> 1) & 0x7; | |
265 | bk_index = cbits; | |
266 | } | |
267 | else | |
268 | { | |
269 | /* table 2 */ | |
270 | cbits = (cbits >> 2) & 0x7; | |
271 | bk_index = cbits + 8; | |
272 | } | |
273 | ||
274 | gdb_assert (!((bk_table[bk_index].break_offset == 0) | |
275 | && (bk_table[bk_index].inst_len == 0))); | |
276 | ||
277 | inst.len = bk_table[bk_index].inst_len; | |
278 | ||
279 | i = (bk_table[bk_index].break_offset + 4) / 2; | |
280 | count = inst.len / 2; | |
281 | for (; count > 0; i++, count--) | |
282 | { | |
283 | inst.raw = (inst.raw << 16) | |
284 | | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
285 | } | |
286 | ||
287 | switch (inst.len) | |
288 | { | |
289 | case 2: | |
290 | inst.v = inst.raw & 0x7FFF; | |
291 | break; | |
292 | case 4: | |
293 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
294 | break; | |
295 | case 6: | |
296 | inst.v = ((inst.raw >> 32 & 0x7FFF) << 30) | |
297 | | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
298 | break; | |
299 | } | |
300 | ||
301 | if (pcptr) | |
302 | *pcptr = adjust_pc + bk_table[bk_index].break_offset; | |
303 | if (lenptr) | |
304 | *lenptr = bk_table[bk_index].inst_len; | |
305 | ||
306 | #undef EXTRACT_LEN | |
307 | ||
308 | return &inst; | |
309 | } | |
310 | ||
27fd2f50 | 311 | static const gdb_byte * |
5f814c3b DL |
312 | score7_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, |
313 | int *lenptr) | |
27fd2f50 | 314 | { |
e17a4113 | 315 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
316 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
317 | int ret; | |
318 | unsigned int raw; | |
319 | ||
320 | if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0) | |
321 | { | |
a73c6dcd | 322 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5e29c264 | 323 | __FILE__, __LINE__); |
27fd2f50 | 324 | } |
e17a4113 | 325 | raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
27fd2f50 | 326 | |
e17a4113 | 327 | if (byte_order == BFD_ENDIAN_BIG) |
27fd2f50 Q |
328 | { |
329 | if (!(raw & 0x80008000)) | |
330 | { | |
331 | /* 16bits instruction. */ | |
332 | static gdb_byte big_breakpoint16[] = { 0x60, 0x02 }; | |
333 | *pcptr &= ~0x1; | |
334 | *lenptr = sizeof (big_breakpoint16); | |
335 | return big_breakpoint16; | |
336 | } | |
337 | else | |
338 | { | |
339 | /* 32bits instruction. */ | |
340 | static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 }; | |
341 | *pcptr &= ~0x3; | |
342 | *lenptr = sizeof (big_breakpoint32); | |
343 | return big_breakpoint32; | |
344 | } | |
345 | } | |
346 | else | |
347 | { | |
348 | if (!(raw & 0x80008000)) | |
349 | { | |
350 | /* 16bits instruction. */ | |
351 | static gdb_byte little_breakpoint16[] = { 0x02, 0x60 }; | |
352 | *pcptr &= ~0x1; | |
353 | *lenptr = sizeof (little_breakpoint16); | |
354 | return little_breakpoint16; | |
355 | } | |
356 | else | |
357 | { | |
358 | /* 32bits instruction. */ | |
359 | static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 }; | |
360 | *pcptr &= ~0x3; | |
361 | *lenptr = sizeof (little_breakpoint32); | |
362 | return little_breakpoint32; | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
5f814c3b DL |
367 | static const gdb_byte * |
368 | score3_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, | |
369 | int *lenptr) | |
370 | { | |
371 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
372 | CORE_ADDR adjust_pc = *pcptr; | |
373 | int len; | |
374 | static gdb_byte score_break_insns[6][6] = { | |
375 | /* The following three instructions are big endian. */ | |
376 | { 0x00, 0x20 }, | |
377 | { 0x80, 0x00, 0x00, 0x06 }, | |
378 | { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }, | |
379 | /* The following three instructions are little endian. */ | |
380 | { 0x20, 0x00 }, | |
381 | { 0x00, 0x80, 0x06, 0x00 }, | |
382 | { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }}; | |
383 | ||
384 | gdb_byte *p = NULL; | |
385 | int index = 0; | |
386 | ||
387 | score3_adjust_pc_and_fetch_inst (&adjust_pc, &len, byte_order); | |
388 | ||
389 | index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (len / 2 - 1); | |
390 | p = score_break_insns[index]; | |
391 | ||
392 | *pcptr = adjust_pc; | |
393 | *lenptr = len; | |
394 | ||
395 | return p; | |
396 | } | |
397 | ||
398 | static CORE_ADDR | |
399 | score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr) | |
400 | { | |
401 | CORE_ADDR adjust_pc = bpaddr; | |
402 | ||
403 | if (target_mach == bfd_mach_score3) | |
404 | score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL, | |
405 | gdbarch_byte_order (gdbarch)); | |
406 | else | |
407 | adjust_pc = align_down (adjust_pc, 2); | |
408 | ||
409 | return adjust_pc; | |
410 | } | |
411 | ||
27fd2f50 Q |
412 | static CORE_ADDR |
413 | score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr) | |
414 | { | |
415 | return align_down (addr, 16); | |
416 | } | |
417 | ||
418 | static void | |
419 | score_xfer_register (struct regcache *regcache, int regnum, int length, | |
420 | enum bfd_endian endian, gdb_byte *readbuf, | |
421 | const gdb_byte *writebuf, int buf_offset) | |
422 | { | |
423 | int reg_offset = 0; | |
5f814c3b | 424 | gdb_assert (regnum >= 0 |
c378eb4e MS |
425 | && regnum < ((target_mach == bfd_mach_score7) |
426 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
427 | |
428 | switch (endian) | |
429 | { | |
430 | case BFD_ENDIAN_BIG: | |
431 | reg_offset = SCORE_REGSIZE - length; | |
432 | break; | |
433 | case BFD_ENDIAN_LITTLE: | |
434 | reg_offset = 0; | |
435 | break; | |
436 | case BFD_ENDIAN_UNKNOWN: | |
437 | reg_offset = 0; | |
438 | break; | |
439 | default: | |
a73c6dcd | 440 | error (_("Error: score_xfer_register in file:%s, line:%d!"), |
5e29c264 | 441 | __FILE__, __LINE__); |
27fd2f50 Q |
442 | } |
443 | ||
444 | if (readbuf != NULL) | |
445 | regcache_cooked_read_part (regcache, regnum, reg_offset, length, | |
446 | readbuf + buf_offset); | |
447 | if (writebuf != NULL) | |
448 | regcache_cooked_write_part (regcache, regnum, reg_offset, length, | |
449 | writebuf + buf_offset); | |
450 | } | |
451 | ||
452 | static enum return_value_convention | |
6a3a010b | 453 | score_return_value (struct gdbarch *gdbarch, struct value *function, |
5f814c3b | 454 | struct type *type, struct regcache *regcache, |
27fd2f50 Q |
455 | gdb_byte * readbuf, const gdb_byte * writebuf) |
456 | { | |
457 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
458 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
459 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
460 | return RETURN_VALUE_STRUCT_CONVENTION; | |
461 | else | |
462 | { | |
463 | int offset; | |
464 | int regnum; | |
465 | for (offset = 0, regnum = SCORE_A0_REGNUM; | |
466 | offset < TYPE_LENGTH (type); | |
467 | offset += SCORE_REGSIZE, regnum++) | |
468 | { | |
469 | int xfer = SCORE_REGSIZE; | |
c378eb4e | 470 | |
27fd2f50 Q |
471 | if (offset + xfer > TYPE_LENGTH (type)) |
472 | xfer = TYPE_LENGTH (type) - offset; | |
4c6b5505 | 473 | score_xfer_register (regcache, regnum, xfer, |
5f814c3b | 474 | gdbarch_byte_order(gdbarch), |
27fd2f50 Q |
475 | readbuf, writebuf, offset); |
476 | } | |
477 | return RETURN_VALUE_REGISTER_CONVENTION; | |
478 | } | |
479 | } | |
480 | ||
481 | static struct frame_id | |
94afd7a6 | 482 | score_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
27fd2f50 | 483 | { |
c378eb4e MS |
484 | return frame_id_build (get_frame_register_unsigned (this_frame, |
485 | SCORE_SP_REGNUM), | |
486 | get_frame_pc (this_frame)); | |
27fd2f50 Q |
487 | } |
488 | ||
489 | static int | |
490 | score_type_needs_double_align (struct type *type) | |
491 | { | |
492 | enum type_code typecode = TYPE_CODE (type); | |
493 | ||
5e29c264 Q |
494 | if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8) |
495 | || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)) | |
27fd2f50 Q |
496 | return 1; |
497 | else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION) | |
498 | { | |
499 | int i, n; | |
500 | ||
501 | n = TYPE_NFIELDS (type); | |
502 | for (i = 0; i < n; i++) | |
503 | if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i))) | |
504 | return 1; | |
505 | return 0; | |
506 | } | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static CORE_ADDR | |
511 | score_push_dummy_call (struct gdbarch *gdbarch, struct value *function, | |
512 | struct regcache *regcache, CORE_ADDR bp_addr, | |
513 | int nargs, struct value **args, CORE_ADDR sp, | |
514 | int struct_return, CORE_ADDR struct_addr) | |
515 | { | |
e17a4113 | 516 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
517 | int argnum; |
518 | int argreg; | |
519 | int arglen = 0; | |
520 | CORE_ADDR stack_offset = 0; | |
521 | CORE_ADDR addr = 0; | |
522 | ||
523 | /* Step 1, Save RA. */ | |
524 | regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr); | |
525 | ||
526 | /* Step 2, Make space on the stack for the args. */ | |
527 | struct_addr = align_down (struct_addr, 16); | |
528 | sp = align_down (sp, 16); | |
529 | for (argnum = 0; argnum < nargs; argnum++) | |
530 | arglen += align_up (TYPE_LENGTH (value_type (args[argnum])), | |
531 | SCORE_REGSIZE); | |
532 | sp -= align_up (arglen, 16); | |
533 | ||
534 | argreg = SCORE_BEGIN_ARG_REGNUM; | |
535 | ||
5e29c264 Q |
536 | /* Step 3, Check if struct return then save the struct address to |
537 | r4 and increase the stack_offset by 4. */ | |
27fd2f50 Q |
538 | if (struct_return) |
539 | { | |
540 | regcache_cooked_write_unsigned (regcache, argreg++, struct_addr); | |
541 | stack_offset += SCORE_REGSIZE; | |
542 | } | |
543 | ||
544 | /* Step 4, Load arguments: | |
5e29c264 Q |
545 | If arg length is too long (> 4 bytes), then split the arg and |
546 | save every parts. */ | |
27fd2f50 Q |
547 | for (argnum = 0; argnum < nargs; argnum++) |
548 | { | |
549 | struct value *arg = args[argnum]; | |
550 | struct type *arg_type = check_typedef (value_type (arg)); | |
27fd2f50 Q |
551 | enum type_code typecode = TYPE_CODE (arg_type); |
552 | const gdb_byte *val = value_contents (arg); | |
553 | int downward_offset = 0; | |
1cfd2c3e JB |
554 | int odd_sized_struct_p; |
555 | int arg_last_part_p = 0; | |
27fd2f50 | 556 | |
1cfd2c3e JB |
557 | arglen = TYPE_LENGTH (arg_type); |
558 | odd_sized_struct_p = (arglen > SCORE_REGSIZE | |
5e29c264 | 559 | && arglen % SCORE_REGSIZE != 0); |
27fd2f50 Q |
560 | |
561 | /* If a arg should be aligned to 8 bytes (long long or double), | |
562 | the value should be put to even register numbers. */ | |
563 | if (score_type_needs_double_align (arg_type)) | |
564 | { | |
565 | if (argreg & 1) | |
566 | argreg++; | |
567 | } | |
568 | ||
569 | /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose | |
570 | the default "downward"/"upward" method: | |
571 | ||
572 | Example: | |
573 | ||
574 | struct struc | |
575 | { | |
576 | char a; char b; char c; | |
577 | } s = {'a', 'b', 'c'}; | |
578 | ||
579 | Big endian: s = {X, 'a', 'b', 'c'} | |
580 | Little endian: s = {'a', 'b', 'c', X} | |
581 | ||
582 | Where X is a hole. */ | |
583 | ||
5f814c3b | 584 | if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG |
27fd2f50 Q |
585 | && (typecode == TYPE_CODE_STRUCT |
586 | || typecode == TYPE_CODE_UNION) | |
587 | && argreg > SCORE_LAST_ARG_REGNUM | |
588 | && arglen < SCORE_REGSIZE) | |
589 | downward_offset += (SCORE_REGSIZE - arglen); | |
590 | ||
591 | while (arglen > 0) | |
592 | { | |
593 | int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE; | |
e17a4113 | 594 | ULONGEST regval = extract_unsigned_integer (val, partial_len, |
5f814c3b | 595 | byte_order); |
27fd2f50 Q |
596 | |
597 | /* The last part of a arg should shift left when | |
4c6b5505 | 598 | gdbarch_byte_order is BFD_ENDIAN_BIG. */ |
5f814c3b | 599 | if (byte_order == BFD_ENDIAN_BIG |
27fd2f50 Q |
600 | && arg_last_part_p == 1 |
601 | && (typecode == TYPE_CODE_STRUCT | |
602 | || typecode == TYPE_CODE_UNION)) | |
603 | regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT); | |
604 | ||
605 | /* Always increase the stack_offset and save args to stack. */ | |
606 | addr = sp + stack_offset + downward_offset; | |
607 | write_memory (addr, val, partial_len); | |
608 | ||
609 | if (argreg <= SCORE_LAST_ARG_REGNUM) | |
610 | { | |
611 | regcache_cooked_write_unsigned (regcache, argreg++, regval); | |
612 | if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2) | |
613 | arg_last_part_p = 1; | |
614 | } | |
615 | ||
616 | val += partial_len; | |
617 | arglen -= partial_len; | |
618 | stack_offset += align_up (partial_len, SCORE_REGSIZE); | |
619 | } | |
620 | } | |
621 | ||
622 | /* Step 5, Save SP. */ | |
623 | regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp); | |
624 | ||
625 | return sp; | |
626 | } | |
627 | ||
27fd2f50 | 628 | static CORE_ADDR |
5f814c3b | 629 | score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
27fd2f50 Q |
630 | { |
631 | CORE_ADDR cpc = pc; | |
632 | int iscan = 32, stack_sub = 0; | |
633 | while (iscan-- > 0) | |
634 | { | |
5f814c3b | 635 | inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL); |
27fd2f50 Q |
636 | if (!inst) |
637 | break; | |
5f814c3b | 638 | if ((inst->len == 4) && !stack_sub |
27fd2f50 Q |
639 | && (G_FLD (inst->v, 29, 25) == 0x1 |
640 | && G_FLD (inst->v, 24, 20) == 0x0)) | |
641 | { | |
642 | /* addi r0, offset */ | |
5f814c3b DL |
643 | stack_sub = cpc + SCORE_INSTLEN; |
644 | pc = cpc + SCORE_INSTLEN; | |
27fd2f50 | 645 | } |
5f814c3b DL |
646 | else if ((inst->len == 4) |
647 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
648 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
649 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
650 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
651 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
27fd2f50 Q |
652 | { |
653 | /* mv r2, r0 */ | |
654 | pc = cpc + SCORE_INSTLEN; | |
655 | break; | |
656 | } | |
5f814c3b DL |
657 | else if ((inst->len == 2) |
658 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
659 | && (G_FLD (inst->v, 11, 8) == 0x2) | |
660 | && (G_FLD (inst->v, 7, 4) == 0x0) | |
661 | && (G_FLD (inst->v, 3, 0) == 0x3)) | |
27fd2f50 Q |
662 | { |
663 | /* mv! r2, r0 */ | |
664 | pc = cpc + SCORE16_INSTLEN; | |
665 | break; | |
666 | } | |
5f814c3b | 667 | else if ((inst->len == 2) |
27fd2f50 Q |
668 | && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */ |
669 | || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */ | |
670 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
671 | && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */ | |
672 | break; | |
5f814c3b | 673 | else if ((inst->len == 4) |
27fd2f50 Q |
674 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ |
675 | || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */ | |
676 | || (G_FLD (inst->v, 29, 25) == 0x0 | |
677 | && G_FLD (inst->v, 6, 1) == 0x4))) /* br */ | |
678 | break; | |
679 | ||
5f814c3b | 680 | cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN; |
27fd2f50 Q |
681 | } |
682 | return pc; | |
683 | } | |
684 | ||
5f814c3b DL |
685 | static CORE_ADDR |
686 | score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) | |
27fd2f50 | 687 | { |
5f814c3b DL |
688 | CORE_ADDR cpc = pc; |
689 | int iscan = 32, stack_sub = 0; | |
690 | while (iscan-- > 0) | |
691 | { | |
692 | inst_t *inst | |
c378eb4e MS |
693 | = score3_adjust_pc_and_fetch_inst (&cpc, NULL, |
694 | gdbarch_byte_order (gdbarch)); | |
27fd2f50 | 695 | |
5f814c3b DL |
696 | if (!inst) |
697 | break; | |
698 | if (inst->len == 4 && !stack_sub | |
699 | && (G_FLD (inst->v, 29, 25) == 0x1) | |
700 | && (G_FLD (inst->v, 19, 17) == 0x0) | |
701 | && (G_FLD (inst->v, 24, 20) == 0x0)) | |
702 | { | |
703 | /* addi r0, offset */ | |
704 | stack_sub = cpc + inst->len; | |
705 | pc = cpc + inst->len; | |
706 | } | |
707 | else if (inst->len == 4 | |
708 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
709 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
710 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
711 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
712 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
713 | { | |
714 | /* mv r2, r0 */ | |
715 | pc = cpc + inst->len; | |
716 | break; | |
717 | } | |
718 | else if ((inst->len == 2) | |
719 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
720 | && (G_FLD (inst->v, 9, 5) == 0x2) | |
721 | && (G_FLD (inst->v, 4, 0) == 0x0)) | |
722 | { | |
723 | /* mv! r2, r0 */ | |
724 | pc = cpc + inst->len; | |
725 | break; | |
726 | } | |
727 | else if (inst->len == 2 | |
728 | && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */ | |
729 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
730 | && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */ | |
731 | break; | |
732 | else if (inst->len == 4 | |
733 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ | |
734 | || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */ | |
735 | break; | |
736 | ||
737 | cpc += inst->len; | |
738 | } | |
739 | return pc; | |
740 | } | |
741 | ||
742 | static int | |
743 | score7_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
744 | { | |
745 | inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL); | |
746 | ||
747 | if (inst->v == 0x23) | |
748 | return 1; /* mv! r0, r2 */ | |
749 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
750 | && G_FLD (inst->v, 3, 0) == 0xa) | |
751 | return 1; /* pop! */ | |
27fd2f50 Q |
752 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
753 | && G_FLD (inst->v, 7, 0) == 0x34) | |
754 | return 1; /* br! r3 */ | |
755 | else if (G_FLD (inst->v, 29, 15) == 0x2 | |
756 | && G_FLD (inst->v, 6, 1) == 0x2b) | |
757 | return 1; /* mv r0, r2 */ | |
758 | else if (G_FLD (inst->v, 29, 25) == 0x0 | |
759 | && G_FLD (inst->v, 6, 1) == 0x4 | |
760 | && G_FLD (inst->v, 19, 15) == 0x3) | |
761 | return 1; /* br r3 */ | |
762 | else | |
763 | return 0; | |
764 | } | |
765 | ||
5f814c3b DL |
766 | static int |
767 | score3_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
768 | { | |
769 | CORE_ADDR pc = cur_pc; | |
770 | inst_t *inst | |
c378eb4e MS |
771 | = score3_adjust_pc_and_fetch_inst (&pc, NULL, |
772 | gdbarch_byte_order (gdbarch)); | |
5f814c3b DL |
773 | |
774 | if (inst->len == 2 | |
775 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
776 | && (G_FLD (inst->v, 9, 5) == 0x0) | |
777 | && (G_FLD (inst->v, 4, 0) == 0x2)) | |
778 | return 1; /* mv! r0, r2 */ | |
779 | else if (inst->len == 4 | |
780 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
781 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
782 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
783 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
784 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
785 | return 1; /* mv r0, r2 */ | |
786 | else if (inst->len == 2 | |
787 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
788 | && (G_FLD (inst->v, 11, 5) == 0x2)) | |
789 | return 1; /* pop! */ | |
790 | else if (inst->len == 2 | |
791 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
792 | && (G_FLD (inst->v, 11, 7) == 0x0) | |
793 | && (G_FLD (inst->v, 6, 5) == 0x2)) | |
794 | return 1; /* rpop! */ | |
795 | else if (inst->len == 2 | |
796 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
797 | && (G_FLD (inst->v, 11, 5) == 0x4) | |
798 | && (G_FLD (inst->v, 4, 0) == 0x3)) | |
799 | return 1; /* br! r3 */ | |
800 | else if (inst->len == 4 | |
801 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
802 | && (G_FLD (inst->v, 24, 20) == 0x0) | |
803 | && (G_FLD (inst->v, 19, 15) == 0x3) | |
804 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
805 | && (G_FLD (inst->v, 9, 0) == 0x8)) | |
806 | return 1; /* br r3 */ | |
807 | else | |
808 | return 0; | |
809 | } | |
810 | ||
811 | static char * | |
812 | score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size) | |
813 | { | |
814 | int ret; | |
815 | char *memblock = NULL; | |
816 | ||
817 | if (size < 0) | |
818 | { | |
a73c6dcd | 819 | error (_("Error: malloc size < 0 in file:%s, line:%d!"), |
5f814c3b DL |
820 | __FILE__, __LINE__); |
821 | return NULL; | |
822 | } | |
823 | else if (size == 0) | |
824 | return NULL; | |
825 | ||
826 | memblock = (char *) xmalloc (size); | |
827 | memset (memblock, 0, size); | |
828 | ret = target_read_memory (addr & ~0x3, memblock, size); | |
829 | if (ret) | |
830 | { | |
a73c6dcd | 831 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
832 | __FILE__, __LINE__); |
833 | return NULL; | |
834 | } | |
835 | return memblock; | |
836 | } | |
837 | ||
27fd2f50 | 838 | static void |
5f814c3b DL |
839 | score7_free_memblock (char *memblock) |
840 | { | |
841 | xfree (memblock); | |
842 | } | |
843 | ||
844 | static void | |
845 | score7_adjust_memblock_ptr (char **memblock, CORE_ADDR prev_pc, | |
846 | CORE_ADDR cur_pc) | |
847 | { | |
848 | if (prev_pc == -1) | |
849 | { | |
850 | /* First time call this function, do nothing. */ | |
851 | } | |
852 | else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0) | |
853 | { | |
854 | /* First 16-bit instruction, then 32-bit instruction. */ | |
855 | *memblock += SCORE_INSTLEN; | |
856 | } | |
857 | else if (cur_pc - prev_pc == 4) | |
858 | { | |
859 | /* Is 32-bit instruction, increase MEMBLOCK by 4. */ | |
860 | *memblock += SCORE_INSTLEN; | |
861 | } | |
862 | } | |
863 | ||
864 | static void | |
865 | score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
94afd7a6 | 866 | struct frame_info *this_frame, |
27fd2f50 Q |
867 | struct score_frame_cache *this_cache) |
868 | { | |
94afd7a6 | 869 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
27fd2f50 | 870 | CORE_ADDR sp; |
5e29c264 | 871 | CORE_ADDR fp; |
27fd2f50 Q |
872 | CORE_ADDR cur_pc = startaddr; |
873 | ||
874 | int sp_offset = 0; | |
875 | int ra_offset = 0; | |
876 | int fp_offset = 0; | |
877 | int ra_offset_p = 0; | |
878 | int fp_offset_p = 0; | |
879 | int inst_len = 0; | |
880 | ||
5e29c264 Q |
881 | char *memblock = NULL; |
882 | char *memblock_ptr = NULL; | |
883 | CORE_ADDR prev_pc = -1; | |
884 | ||
885 | /* Allocate MEMBLOCK if PC - STARTADDR > 0. */ | |
886 | memblock_ptr = memblock = | |
5f814c3b | 887 | score7_malloc_and_get_memblock (startaddr, pc - startaddr); |
5e29c264 | 888 | |
94afd7a6 UW |
889 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
890 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
27fd2f50 | 891 | |
5e29c264 | 892 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) |
27fd2f50 | 893 | { |
5e29c264 Q |
894 | inst_t *inst = NULL; |
895 | if (memblock != NULL) | |
896 | { | |
897 | /* Reading memory block from target succefully and got all | |
898 | the instructions(from STARTADDR to PC) needed. */ | |
5f814c3b DL |
899 | score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc); |
900 | inst = score7_fetch_inst (gdbarch, cur_pc, memblock); | |
5e29c264 Q |
901 | } |
902 | else | |
903 | { | |
904 | /* Otherwise, we fetch 4 bytes from target, and GDB also | |
905 | work correctly. */ | |
5f814c3b | 906 | inst = score7_fetch_inst (gdbarch, cur_pc, NULL); |
5e29c264 Q |
907 | } |
908 | ||
c378eb4e | 909 | /* FIXME: make a full-power prologue analyzer. */ |
5f814c3b | 910 | if (inst->len == 2) |
27fd2f50 Q |
911 | { |
912 | inst_len = SCORE16_INSTLEN; | |
913 | ||
914 | if (G_FLD (inst->v, 14, 12) == 0x2 | |
915 | && G_FLD (inst->v, 3, 0) == 0xe) | |
916 | { | |
917 | /* push! */ | |
918 | sp_offset += 4; | |
919 | ||
920 | if (G_FLD (inst->v, 11, 7) == 0x6 | |
921 | && ra_offset_p == 0) | |
922 | { | |
923 | /* push! r3, [r0] */ | |
924 | ra_offset = sp_offset; | |
925 | ra_offset_p = 1; | |
926 | } | |
927 | else if (G_FLD (inst->v, 11, 7) == 0x4 | |
928 | && fp_offset_p == 0) | |
929 | { | |
930 | /* push! r2, [r0] */ | |
931 | fp_offset = sp_offset; | |
932 | fp_offset_p = 1; | |
933 | } | |
934 | } | |
935 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
936 | && G_FLD (inst->v, 3, 0) == 0xa) | |
937 | { | |
938 | /* pop! */ | |
939 | sp_offset -= 4; | |
940 | } | |
941 | else if (G_FLD (inst->v, 14, 7) == 0xc1 | |
942 | && G_FLD (inst->v, 2, 0) == 0x0) | |
943 | { | |
944 | /* subei! r0, n */ | |
945 | sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3)); | |
946 | } | |
947 | else if (G_FLD (inst->v, 14, 7) == 0xc0 | |
948 | && G_FLD (inst->v, 2, 0) == 0x0) | |
949 | { | |
950 | /* addei! r0, n */ | |
951 | sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3)); | |
952 | } | |
953 | } | |
954 | else | |
955 | { | |
956 | inst_len = SCORE_INSTLEN; | |
957 | ||
5f814c3b DL |
958 | if (G_FLD(inst->v, 29, 25) == 0x3 |
959 | && G_FLD(inst->v, 2, 0) == 0x4 | |
960 | && G_FLD(inst->v, 19, 15) == 0) | |
27fd2f50 | 961 | { |
5f814c3b DL |
962 | /* sw rD, [r0, offset]+ */ |
963 | sp_offset += SCORE_INSTLEN; | |
964 | ||
965 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
966 | { | |
967 | /* rD = r3 */ | |
968 | if (ra_offset_p == 0) | |
969 | { | |
970 | ra_offset = sp_offset; | |
971 | ra_offset_p = 1; | |
972 | } | |
973 | } | |
974 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
975 | { | |
976 | /* rD = r2 */ | |
977 | if (fp_offset_p == 0) | |
978 | { | |
979 | fp_offset = sp_offset; | |
980 | fp_offset_p = 1; | |
981 | } | |
982 | } | |
27fd2f50 | 983 | } |
5f814c3b DL |
984 | else if (G_FLD(inst->v, 29, 25) == 0x14 |
985 | && G_FLD(inst->v, 19,15) == 0) | |
27fd2f50 | 986 | { |
5f814c3b DL |
987 | /* sw rD, [r0, offset] */ |
988 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
989 | { | |
990 | /* rD = r3 */ | |
991 | ra_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
992 | ra_offset_p = 1; | |
993 | } | |
994 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
995 | { | |
996 | /* rD = r2 */ | |
997 | fp_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
998 | fp_offset_p = 1; | |
999 | } | |
27fd2f50 Q |
1000 | } |
1001 | else if (G_FLD (inst->v, 29, 15) == 0x1c60 | |
1002 | && G_FLD (inst->v, 2, 0) == 0x0) | |
1003 | { | |
1004 | /* lw r3, [r0]+, 4 */ | |
1005 | sp_offset -= SCORE_INSTLEN; | |
1006 | ra_offset_p = 1; | |
1007 | } | |
1008 | else if (G_FLD (inst->v, 29, 15) == 0x1c40 | |
1009 | && G_FLD (inst->v, 2, 0) == 0x0) | |
1010 | { | |
1011 | /* lw r2, [r0]+, 4 */ | |
1012 | sp_offset -= SCORE_INSTLEN; | |
1013 | fp_offset_p = 1; | |
1014 | } | |
1015 | ||
1016 | else if (G_FLD (inst->v, 29, 17) == 0x100 | |
1017 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1018 | { | |
1019 | /* addi r0, -offset */ | |
1020 | sp_offset += 65536 - G_FLD (inst->v, 16, 1); | |
1021 | } | |
1022 | else if (G_FLD (inst->v, 29, 17) == 0x110 | |
1023 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1024 | { | |
1025 | /* addi r2, offset */ | |
1026 | if (pc - cur_pc > 4) | |
1027 | { | |
1028 | unsigned int save_v = inst->v; | |
1029 | inst_t *inst2 = | |
5f814c3b | 1030 | score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL); |
27fd2f50 | 1031 | if (inst2->v == 0x23) |
5e29c264 Q |
1032 | { |
1033 | /* mv! r0, r2 */ | |
1034 | sp_offset -= G_FLD (save_v, 16, 1); | |
1035 | } | |
27fd2f50 Q |
1036 | } |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | /* Save RA. */ | |
1042 | if (ra_offset_p == 1) | |
1043 | { | |
1044 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1045 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1046 | sp + sp_offset - ra_offset; | |
1047 | } | |
1048 | else | |
1049 | { | |
1050 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1051 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1052 | } | |
1053 | ||
1054 | /* Save FP. */ | |
1055 | if (fp_offset_p == 1) | |
1056 | { | |
1057 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1058 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1059 | sp + sp_offset - fp_offset; | |
1060 | } | |
1061 | ||
5e29c264 Q |
1062 | /* Save SP and FP. */ |
1063 | this_cache->base = sp + sp_offset; | |
1064 | this_cache->fp = fp; | |
1065 | ||
1066 | /* Don't forget to free MEMBLOCK if we allocated it. */ | |
1067 | if (memblock_ptr != NULL) | |
5f814c3b DL |
1068 | score7_free_memblock (memblock_ptr); |
1069 | } | |
1070 | ||
1071 | static void | |
1072 | score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
1073 | struct frame_info *this_frame, | |
1074 | struct score_frame_cache *this_cache) | |
1075 | { | |
1076 | CORE_ADDR sp; | |
1077 | CORE_ADDR fp; | |
1078 | CORE_ADDR cur_pc = startaddr; | |
c378eb4e MS |
1079 | enum bfd_endian byte_order |
1080 | = gdbarch_byte_order (get_frame_arch (this_frame)); | |
5f814c3b DL |
1081 | |
1082 | int sp_offset = 0; | |
1083 | int ra_offset = 0; | |
1084 | int fp_offset = 0; | |
1085 | int ra_offset_p = 0; | |
1086 | int fp_offset_p = 0; | |
1087 | int inst_len = 0; | |
1088 | ||
1089 | CORE_ADDR prev_pc = -1; | |
1090 | ||
1091 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); | |
1092 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
1093 | ||
1094 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) | |
1095 | { | |
1096 | inst_t *inst = NULL; | |
1097 | ||
1098 | inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order); | |
1099 | ||
c378eb4e | 1100 | /* FIXME: make a full-power prologue analyzer. */ |
5f814c3b DL |
1101 | if (inst->len == 2) |
1102 | { | |
1103 | if (G_FLD (inst->v, 14, 12) == 0x0 | |
1104 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1105 | && G_FLD (inst->v, 6, 5) == 0x3) | |
1106 | { | |
1107 | /* push! */ | |
1108 | sp_offset += 4; | |
1109 | ||
1110 | if (G_FLD (inst->v, 4, 0) == 0x3 | |
1111 | && ra_offset_p == 0) | |
1112 | { | |
1113 | /* push! r3, [r0] */ | |
1114 | ra_offset = sp_offset; | |
1115 | ra_offset_p = 1; | |
1116 | } | |
1117 | else if (G_FLD (inst->v, 4, 0) == 0x2 | |
1118 | && fp_offset_p == 0) | |
1119 | { | |
1120 | /* push! r2, [r0] */ | |
1121 | fp_offset = sp_offset; | |
1122 | fp_offset_p = 1; | |
1123 | } | |
1124 | } | |
1125 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1126 | && G_FLD (inst->v, 11, 10) == 0x3) | |
1127 | { | |
1128 | /* rpush! */ | |
1129 | int start_r = G_FLD (inst->v, 9, 5); | |
1130 | int cnt = G_FLD (inst->v, 4, 0); | |
1131 | ||
1132 | if ((ra_offset_p == 0) | |
1133 | && (start_r <= SCORE_RA_REGNUM) | |
1134 | && (SCORE_RA_REGNUM < start_r + cnt)) | |
1135 | { | |
1136 | /* rpush! contains r3 */ | |
1137 | ra_offset_p = 1; | |
1138 | ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4; | |
1139 | } | |
1140 | ||
1141 | if ((fp_offset_p == 0) | |
1142 | && (start_r <= SCORE_FP_REGNUM) | |
1143 | && (SCORE_FP_REGNUM < start_r + cnt)) | |
1144 | { | |
1145 | /* rpush! contains r2 */ | |
1146 | fp_offset_p = 1; | |
1147 | fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4; | |
1148 | } | |
1149 | ||
1150 | sp_offset += 4 * cnt; | |
1151 | } | |
1152 | else if (G_FLD (inst->v, 14, 12) == 0x0 | |
1153 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1154 | && G_FLD (inst->v, 6, 5) == 0x2) | |
1155 | { | |
1156 | /* pop! */ | |
1157 | sp_offset -= 4; | |
1158 | } | |
1159 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1160 | && G_FLD (inst->v, 11, 10) == 0x2) | |
1161 | { | |
1162 | /* rpop! */ | |
1163 | sp_offset -= 4 * G_FLD (inst->v, 4, 0); | |
1164 | } | |
1165 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1166 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1167 | && G_FLD (inst->v, 9, 6) == 0x0) | |
1168 | { | |
1169 | /* addi! r0, -offset */ | |
1170 | int imm = G_FLD (inst->v, 5, 0); | |
1171 | if (imm >> 5) | |
1172 | imm = -(0x3F - imm + 1); | |
1173 | sp_offset -= imm; | |
1174 | } | |
1175 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1176 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1177 | && G_FLD (inst->v, 9, 6) == 0x2) | |
1178 | { | |
1179 | /* addi! r2, offset */ | |
1180 | if (pc - cur_pc >= 2) | |
1181 | { | |
1182 | unsigned int save_v = inst->v; | |
1183 | inst_t *inst2; | |
1184 | ||
1185 | cur_pc += inst->len; | |
c378eb4e MS |
1186 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
1187 | byte_order); | |
5f814c3b DL |
1188 | |
1189 | if (inst2->len == 2 | |
1190 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1191 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1192 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1193 | { | |
1194 | /* mv! r0, r2 */ | |
1195 | int imm = G_FLD (inst->v, 5, 0); | |
1196 | if (imm >> 5) | |
1197 | imm = -(0x3F - imm + 1); | |
1198 | sp_offset -= imm; | |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | else if (inst->len == 4) | |
1204 | { | |
1205 | if (G_FLD (inst->v, 29, 25) == 0x3 | |
1206 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1207 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1208 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1209 | { | |
1210 | /* sw r3, [r0, offset]+ */ | |
1211 | sp_offset += inst->len; | |
1212 | if (ra_offset_p == 0) | |
1213 | { | |
1214 | ra_offset = sp_offset; | |
1215 | ra_offset_p = 1; | |
1216 | } | |
1217 | } | |
1218 | else if (G_FLD (inst->v, 29, 25) == 0x3 | |
1219 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1220 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1221 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1222 | { | |
1223 | /* sw r2, [r0, offset]+ */ | |
1224 | sp_offset += inst->len; | |
1225 | if (fp_offset_p == 0) | |
1226 | { | |
1227 | fp_offset = sp_offset; | |
1228 | fp_offset_p = 1; | |
1229 | } | |
1230 | } | |
1231 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1232 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1233 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1234 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1235 | { | |
1236 | /* lw r3, [r0]+, 4 */ | |
1237 | sp_offset -= inst->len; | |
1238 | ra_offset_p = 1; | |
1239 | } | |
1240 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1241 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1242 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1243 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1244 | { | |
1245 | /* lw r2, [r0]+, 4 */ | |
1246 | sp_offset -= inst->len; | |
1247 | fp_offset_p = 1; | |
1248 | } | |
1249 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1250 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1251 | && G_FLD (inst->v, 24, 20) == 0x0 | |
1252 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1253 | { | |
1254 | /* addi r0, -offset */ | |
1255 | int imm = G_FLD (inst->v, 16, 1); | |
1256 | if (imm >> 15) | |
1257 | imm = -(0xFFFF - imm + 1); | |
1258 | sp_offset -= imm; | |
1259 | } | |
1260 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1261 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1262 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1263 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1264 | { | |
1265 | /* addi r2, offset */ | |
1266 | if (pc - cur_pc >= 2) | |
1267 | { | |
1268 | unsigned int save_v = inst->v; | |
1269 | inst_t *inst2; | |
1270 | ||
1271 | cur_pc += inst->len; | |
c378eb4e MS |
1272 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
1273 | byte_order); | |
5f814c3b DL |
1274 | |
1275 | if (inst2->len == 2 | |
1276 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1277 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1278 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1279 | { | |
1280 | /* mv! r0, r2 */ | |
1281 | int imm = G_FLD (inst->v, 16, 1); | |
1282 | if (imm >> 15) | |
1283 | imm = -(0xFFFF - imm + 1); | |
1284 | sp_offset -= imm; | |
1285 | } | |
1286 | } | |
1287 | } | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* Save RA. */ | |
1292 | if (ra_offset_p == 1) | |
1293 | { | |
1294 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1295 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1296 | sp + sp_offset - ra_offset; | |
1297 | } | |
1298 | else | |
1299 | { | |
1300 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1301 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1302 | } | |
1303 | ||
1304 | /* Save FP. */ | |
1305 | if (fp_offset_p == 1) | |
1306 | { | |
1307 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1308 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1309 | sp + sp_offset - fp_offset; | |
1310 | } | |
1311 | ||
1312 | /* Save SP and FP. */ | |
1313 | this_cache->base = sp + sp_offset; | |
1314 | this_cache->fp = fp; | |
27fd2f50 Q |
1315 | } |
1316 | ||
1317 | static struct score_frame_cache * | |
94afd7a6 | 1318 | score_make_prologue_cache (struct frame_info *this_frame, void **this_cache) |
27fd2f50 Q |
1319 | { |
1320 | struct score_frame_cache *cache; | |
1321 | ||
1322 | if ((*this_cache) != NULL) | |
1323 | return (*this_cache); | |
1324 | ||
1325 | cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache); | |
1326 | (*this_cache) = cache; | |
94afd7a6 | 1327 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
27fd2f50 Q |
1328 | |
1329 | /* Analyze the prologue. */ | |
1330 | { | |
94afd7a6 | 1331 | const CORE_ADDR pc = get_frame_pc (this_frame); |
27fd2f50 Q |
1332 | CORE_ADDR start_addr; |
1333 | ||
1334 | find_pc_partial_function (pc, NULL, &start_addr, NULL); | |
1335 | if (start_addr == 0) | |
1336 | return cache; | |
5f814c3b DL |
1337 | |
1338 | if (target_mach == bfd_mach_score3) | |
1339 | score3_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
1340 | else | |
1341 | score7_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
27fd2f50 Q |
1342 | } |
1343 | ||
1344 | /* Save SP. */ | |
1345 | trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base); | |
1346 | ||
1347 | return (*this_cache); | |
1348 | } | |
1349 | ||
1350 | static void | |
94afd7a6 | 1351 | score_prologue_this_id (struct frame_info *this_frame, void **this_cache, |
27fd2f50 Q |
1352 | struct frame_id *this_id) |
1353 | { | |
94afd7a6 | 1354 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1355 | this_cache); |
94afd7a6 | 1356 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
27fd2f50 Q |
1357 | } |
1358 | ||
94afd7a6 UW |
1359 | static struct value * |
1360 | score_prologue_prev_register (struct frame_info *this_frame, | |
1361 | void **this_cache, int regnum) | |
27fd2f50 | 1362 | { |
94afd7a6 | 1363 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1364 | this_cache); |
94afd7a6 | 1365 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
27fd2f50 Q |
1366 | } |
1367 | ||
1368 | static const struct frame_unwind score_prologue_unwind = | |
1369 | { | |
1370 | NORMAL_FRAME, | |
8fbca658 | 1371 | default_frame_unwind_stop_reason, |
27fd2f50 | 1372 | score_prologue_this_id, |
94afd7a6 UW |
1373 | score_prologue_prev_register, |
1374 | NULL, | |
5f814c3b DL |
1375 | default_frame_sniffer, |
1376 | NULL | |
27fd2f50 Q |
1377 | }; |
1378 | ||
27fd2f50 | 1379 | static CORE_ADDR |
94afd7a6 | 1380 | score_prologue_frame_base_address (struct frame_info *this_frame, |
27fd2f50 Q |
1381 | void **this_cache) |
1382 | { | |
1383 | struct score_frame_cache *info = | |
94afd7a6 | 1384 | score_make_prologue_cache (this_frame, this_cache); |
5e29c264 | 1385 | return info->fp; |
27fd2f50 Q |
1386 | } |
1387 | ||
1388 | static const struct frame_base score_prologue_frame_base = | |
1389 | { | |
1390 | &score_prologue_unwind, | |
1391 | score_prologue_frame_base_address, | |
1392 | score_prologue_frame_base_address, | |
1393 | score_prologue_frame_base_address, | |
1394 | }; | |
1395 | ||
1396 | static const struct frame_base * | |
94afd7a6 | 1397 | score_prologue_frame_base_sniffer (struct frame_info *this_frame) |
27fd2f50 Q |
1398 | { |
1399 | return &score_prologue_frame_base; | |
1400 | } | |
1401 | ||
5f814c3b DL |
1402 | /* Core file support (dirty hack) |
1403 | ||
c378eb4e | 1404 | The core file MUST be generated by GNU/Linux on S+core. */ |
5f814c3b DL |
1405 | |
1406 | static void | |
1407 | score7_linux_supply_gregset(const struct regset *regset, | |
1408 | struct regcache *regcache, | |
1409 | int regnum, const void *gregs_buf, size_t len) | |
1410 | { | |
c378eb4e MS |
1411 | int regno; |
1412 | elf_gregset_t *gregs; | |
5f814c3b | 1413 | |
c378eb4e MS |
1414 | gdb_assert (regset != NULL); |
1415 | gdb_assert ((regcache != NULL) && (gregs_buf != NULL)); | |
5f814c3b | 1416 | |
c378eb4e | 1417 | gregs = (elf_gregset_t *) gregs_buf; |
5f814c3b | 1418 | |
c378eb4e MS |
1419 | for (regno = 0; regno < 32; regno++) |
1420 | if (regnum == -1 || regnum == regno) | |
1421 | regcache_raw_supply (regcache, regno, gregs->regs + regno); | |
5f814c3b | 1422 | |
c378eb4e MS |
1423 | { |
1424 | struct sreg { | |
1425 | int regnum; | |
1426 | void *buf; | |
1427 | } sregs [] = { | |
1428 | { 55, &(gregs->cel) }, /* CEL */ | |
1429 | { 54, &(gregs->ceh) }, /* CEH */ | |
1430 | { 53, &(gregs->sr0) }, /* sr0, i.e. cnt or COUNTER */ | |
1431 | { 52, &(gregs->sr1) }, /* sr1, i.e. lcr or LDCR */ | |
1432 | { 51, &(gregs->sr1) }, /* sr2, i.e. scr or STCR */ | |
1433 | ||
1434 | /* Exception occured at this address, exactly the PC we want */ | |
1435 | { 49, &(gregs->cp0_epc) }, /* PC */ | |
1436 | ||
1437 | { 38, &(gregs->cp0_ema) }, /* EMA */ | |
1438 | { 37, &(gregs->cp0_epc) }, /* EPC */ | |
1439 | { 34, &(gregs->cp0_ecr) }, /* ECR */ | |
1440 | { 33, &(gregs->cp0_condition) }, /* COND */ | |
1441 | { 32, &(gregs->cp0_psr) }, /* PSR */ | |
1442 | }; | |
1443 | ||
1444 | for (regno = 0; regno < sizeof(sregs)/sizeof(sregs[0]); regno++) | |
1445 | if (regnum == -1 || regnum == sregs[regno].regnum) | |
1446 | regcache_raw_supply (regcache, | |
1447 | sregs[regno].regnum, sregs[regno].buf); | |
1448 | } | |
5f814c3b DL |
1449 | } |
1450 | ||
1451 | /* Return the appropriate register set from the core section identified | |
c378eb4e | 1452 | by SECT_NAME and SECT_SIZE. */ |
5f814c3b DL |
1453 | |
1454 | static const struct regset * | |
1455 | score7_linux_regset_from_core_section(struct gdbarch *gdbarch, | |
1456 | const char *sect_name, size_t sect_size) | |
1457 | { | |
c378eb4e | 1458 | struct gdbarch_tdep *tdep; |
5f814c3b | 1459 | |
c378eb4e MS |
1460 | gdb_assert (gdbarch != NULL); |
1461 | gdb_assert (sect_name != NULL); | |
5f814c3b | 1462 | |
c378eb4e | 1463 | tdep = gdbarch_tdep (gdbarch); |
5f814c3b | 1464 | |
c378eb4e | 1465 | if (strcmp(sect_name, ".reg") == 0 && sect_size == sizeof(elf_gregset_t)) |
5f814c3b | 1466 | { |
c378eb4e MS |
1467 | if (tdep->gregset == NULL) |
1468 | tdep->gregset = regset_alloc (gdbarch, | |
1469 | score7_linux_supply_gregset, NULL); | |
1470 | return tdep->gregset; | |
5f814c3b DL |
1471 | } |
1472 | ||
c378eb4e | 1473 | return NULL; |
5f814c3b DL |
1474 | } |
1475 | ||
27fd2f50 Q |
1476 | static struct gdbarch * |
1477 | score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
1478 | { | |
1479 | struct gdbarch *gdbarch; | |
5f814c3b DL |
1480 | struct gdbarch_tdep *tdep; |
1481 | target_mach = info.bfd_arch_info->mach; | |
27fd2f50 Q |
1482 | |
1483 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1484 | if (arches != NULL) | |
1485 | { | |
1486 | return (arches->gdbarch); | |
1487 | } | |
5f814c3b DL |
1488 | tdep = xcalloc(1, sizeof(struct gdbarch_tdep)); |
1489 | gdbarch = gdbarch_alloc (&info, tdep); | |
27fd2f50 Q |
1490 | |
1491 | set_gdbarch_short_bit (gdbarch, 16); | |
1492 | set_gdbarch_int_bit (gdbarch, 32); | |
1493 | set_gdbarch_float_bit (gdbarch, 32); | |
1494 | set_gdbarch_double_bit (gdbarch, 64); | |
1495 | set_gdbarch_long_double_bit (gdbarch, 64); | |
5f814c3b | 1496 | #if WITH_SIM |
27fd2f50 | 1497 | set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno); |
5f814c3b | 1498 | #endif |
27fd2f50 Q |
1499 | set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM); |
1500 | set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM); | |
c378eb4e MS |
1501 | set_gdbarch_adjust_breakpoint_address (gdbarch, |
1502 | score_adjust_breakpoint_address); | |
27fd2f50 Q |
1503 | set_gdbarch_register_type (gdbarch, score_register_type); |
1504 | set_gdbarch_frame_align (gdbarch, score_frame_align); | |
1505 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
30244cd8 | 1506 | set_gdbarch_unwind_sp (gdbarch, score_unwind_sp); |
5f814c3b | 1507 | set_gdbarch_unwind_pc (gdbarch, score_unwind_pc); |
27fd2f50 | 1508 | set_gdbarch_print_insn (gdbarch, score_print_insn); |
5f814c3b DL |
1509 | |
1510 | switch (target_mach) | |
1511 | { | |
1512 | case bfd_mach_score7: | |
1513 | set_gdbarch_breakpoint_from_pc (gdbarch, score7_breakpoint_from_pc); | |
1514 | set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue); | |
c378eb4e MS |
1515 | set_gdbarch_in_function_epilogue_p (gdbarch, |
1516 | score7_in_function_epilogue_p); | |
5f814c3b DL |
1517 | set_gdbarch_register_name (gdbarch, score7_register_name); |
1518 | set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS); | |
c378eb4e MS |
1519 | /* Core file support. */ |
1520 | set_gdbarch_regset_from_core_section (gdbarch, | |
1521 | score7_linux_regset_from_core_section); | |
5f814c3b DL |
1522 | break; |
1523 | ||
1524 | case bfd_mach_score3: | |
1525 | set_gdbarch_breakpoint_from_pc (gdbarch, score3_breakpoint_from_pc); | |
1526 | set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue); | |
c378eb4e MS |
1527 | set_gdbarch_in_function_epilogue_p (gdbarch, |
1528 | score3_in_function_epilogue_p); | |
5f814c3b DL |
1529 | set_gdbarch_register_name (gdbarch, score3_register_name); |
1530 | set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS); | |
1531 | break; | |
1532 | } | |
5e29c264 Q |
1533 | |
1534 | /* Watchpoint hooks. */ | |
1535 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); | |
1536 | ||
1537 | /* Dummy frame hooks. */ | |
27fd2f50 | 1538 | set_gdbarch_return_value (gdbarch, score_return_value); |
5e29c264 | 1539 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
94afd7a6 | 1540 | set_gdbarch_dummy_id (gdbarch, score_dummy_id); |
27fd2f50 Q |
1541 | set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call); |
1542 | ||
5e29c264 | 1543 | /* Normal frame hooks. */ |
94afd7a6 | 1544 | dwarf2_append_unwinders (gdbarch); |
27fd2f50 | 1545 | frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); |
94afd7a6 | 1546 | frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind); |
27fd2f50 Q |
1547 | frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer); |
1548 | ||
1549 | return gdbarch; | |
1550 | } | |
1551 | ||
1552 | extern initialize_file_ftype _initialize_score_tdep; | |
1553 | ||
1554 | void | |
1555 | _initialize_score_tdep (void) | |
1556 | { | |
1557 | gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL); | |
1558 | } |