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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 | ||
7b6bb8da JB |
4 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 |
5 | Free Software Foundation, Inc. | |
27fd2f50 Q |
6 | |
7 | Contributed by Qinwei (qinwei@sunnorth.com.cn) | |
8 | Contributed by Ching-Peng Lin (cplin@sunplus.com) | |
9 | ||
10 | This file is part of GDB. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 14 | the Free Software Foundation; either version 3 of the License, or |
27fd2f50 Q |
15 | (at your option) any later version. |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 23 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
27fd2f50 Q |
24 | |
25 | #include "defs.h" | |
26 | #include "gdb_assert.h" | |
27 | #include "inferior.h" | |
28 | #include "symtab.h" | |
29 | #include "objfiles.h" | |
30 | #include "gdbcore.h" | |
31 | #include "target.h" | |
32 | #include "arch-utils.h" | |
33 | #include "regcache.h" | |
5f814c3b | 34 | #include "regset.h" |
27fd2f50 Q |
35 | #include "dis-asm.h" |
36 | #include "frame-unwind.h" | |
37 | #include "frame-base.h" | |
38 | #include "trad-frame.h" | |
39 | #include "dwarf2-frame.h" | |
40 | #include "score-tdep.h" | |
41 | ||
5f814c3b DL |
42 | #define G_FLD(_i,_ms,_ls) \ |
43 | ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls))) | |
27fd2f50 Q |
44 | |
45 | typedef struct{ | |
5f814c3b DL |
46 | unsigned long long v; |
47 | unsigned long long raw; | |
48 | unsigned int len; | |
27fd2f50 Q |
49 | }inst_t; |
50 | ||
51 | struct score_frame_cache | |
52 | { | |
53 | CORE_ADDR base; | |
5e29c264 | 54 | CORE_ADDR fp; |
27fd2f50 Q |
55 | struct trad_frame_saved_reg *saved_regs; |
56 | }; | |
57 | ||
5f814c3b | 58 | static int target_mach = bfd_mach_score7; |
5e29c264 | 59 | |
27fd2f50 Q |
60 | static struct type * |
61 | score_register_type (struct gdbarch *gdbarch, int regnum) | |
62 | { | |
5f814c3b DL |
63 | gdb_assert (regnum >= 0 |
64 | && regnum < ((target_mach == bfd_mach_score7) ? 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 DL |
123 | gdb_assert (regnum >= 0 |
124 | && regnum < ((target_mach == bfd_mach_score7) ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
125 | return regnum; |
126 | } | |
5f814c3b | 127 | #endif |
27fd2f50 Q |
128 | |
129 | static int | |
130 | score_print_insn (bfd_vma memaddr, struct disassemble_info *info) | |
131 | { | |
f52cb1b8 | 132 | if (info->endian == BFD_ENDIAN_BIG) |
27fd2f50 Q |
133 | return print_insn_big_score (memaddr, info); |
134 | else | |
135 | return print_insn_little_score (memaddr, info); | |
136 | } | |
137 | ||
5f814c3b DL |
138 | static inst_t * |
139 | score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, char *memblock) | |
140 | { | |
141 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
142 | static inst_t inst = { 0, 0, 0 }; | |
143 | char buf[SCORE_INSTLEN] = { 0 }; | |
144 | int big; | |
145 | int ret; | |
146 | ||
147 | if (target_has_execution && memblock != NULL) | |
148 | { | |
149 | /* Fetch instruction from local MEMBLOCK. */ | |
150 | memcpy (buf, memblock, SCORE_INSTLEN); | |
151 | } | |
152 | else | |
153 | { | |
154 | /* Fetch instruction from target. */ | |
155 | ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN); | |
156 | if (ret) | |
157 | { | |
a73c6dcd | 158 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
159 | __FILE__, __LINE__); |
160 | return 0; | |
161 | } | |
162 | } | |
163 | ||
164 | inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); | |
165 | inst.len = (inst.raw & 0x80008000) ? 4 : 2; | |
166 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
167 | big = (byte_order == BFD_ENDIAN_BIG); | |
168 | if (inst.len == 2) | |
169 | { | |
170 | if (big ^ ((addr & 0x2) == 2)) | |
171 | inst.v = G_FLD (inst.v, 29, 15); | |
172 | else | |
173 | inst.v = G_FLD (inst.v, 14, 0); | |
174 | } | |
175 | return &inst; | |
176 | } | |
177 | ||
178 | static inst_t * | |
179 | score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr, | |
180 | enum bfd_endian byte_order) | |
181 | { | |
182 | static inst_t inst = { 0, 0, 0 }; | |
183 | ||
184 | struct breakplace | |
185 | { | |
186 | int break_offset; | |
187 | int inst_len; | |
188 | }; | |
189 | /* raw table 1 (column 2, 3, 4) | |
190 | * 0 1 0 * # 2 | |
191 | * 0 1 1 0 # 3 | |
192 | 0 1 1 0 * # 6 | |
193 | table 2 (column 1, 2, 3) | |
194 | * 0 0 * * # 0, 4 | |
195 | 0 1 0 * * # 2 | |
196 | 1 1 0 * * # 6 | |
197 | */ | |
198 | ||
199 | static const struct breakplace bk_table[16] = | |
200 | { | |
201 | /* table 1 */ | |
202 | {0, 0}, | |
203 | {0, 0}, | |
204 | {0, 4}, | |
205 | {0, 6}, | |
206 | {0, 0}, | |
207 | {0, 0}, | |
208 | {-2, 6}, | |
209 | {0, 0}, | |
210 | /* table 2 */ | |
211 | {0, 2}, | |
212 | {0, 0}, | |
213 | {-2, 4}, | |
214 | {0, 0}, | |
215 | {0, 2}, | |
216 | {0, 0}, | |
217 | {-4, 6}, | |
218 | {0, 0} | |
219 | }; | |
220 | ||
221 | #define EXTRACT_LEN 2 | |
222 | CORE_ADDR adjust_pc = *pcptr & ~0x1; | |
223 | int inst_len; | |
224 | gdb_byte buf[5][EXTRACT_LEN] = | |
225 | { | |
226 | {'\0', '\0'}, | |
227 | {'\0', '\0'}, | |
228 | {'\0', '\0'}, | |
229 | {'\0', '\0'}, | |
230 | {'\0', '\0'} | |
231 | }; | |
232 | int ret; | |
233 | unsigned int raw; | |
234 | unsigned int cbits = 0; | |
235 | int bk_index; | |
236 | int i, count; | |
237 | ||
238 | inst.v = 0; | |
239 | inst.raw = 0; | |
240 | inst.len = 0; | |
241 | ||
242 | adjust_pc -= 4; | |
243 | for (i = 0; i < 5; i++) | |
244 | { | |
245 | ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN); | |
246 | if (ret != 0) | |
247 | { | |
248 | buf[i][0] = '\0'; | |
249 | buf[i][1] = '\0'; | |
250 | if (i == 2) | |
a73c6dcd | 251 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
252 | __FILE__, __LINE__); |
253 | } | |
254 | ||
255 | raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
256 | cbits = (cbits << 1) | (raw >> 15); | |
257 | } | |
258 | adjust_pc += 4; | |
259 | ||
260 | if (cbits & 0x4) | |
261 | { | |
262 | /* table 1 */ | |
263 | cbits = (cbits >> 1) & 0x7; | |
264 | bk_index = cbits; | |
265 | } | |
266 | else | |
267 | { | |
268 | /* table 2 */ | |
269 | cbits = (cbits >> 2) & 0x7; | |
270 | bk_index = cbits + 8; | |
271 | } | |
272 | ||
273 | gdb_assert (!((bk_table[bk_index].break_offset == 0) | |
274 | && (bk_table[bk_index].inst_len == 0))); | |
275 | ||
276 | inst.len = bk_table[bk_index].inst_len; | |
277 | ||
278 | i = (bk_table[bk_index].break_offset + 4) / 2; | |
279 | count = inst.len / 2; | |
280 | for (; count > 0; i++, count--) | |
281 | { | |
282 | inst.raw = (inst.raw << 16) | |
283 | | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
284 | } | |
285 | ||
286 | switch (inst.len) | |
287 | { | |
288 | case 2: | |
289 | inst.v = inst.raw & 0x7FFF; | |
290 | break; | |
291 | case 4: | |
292 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
293 | break; | |
294 | case 6: | |
295 | inst.v = ((inst.raw >> 32 & 0x7FFF) << 30) | |
296 | | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
297 | break; | |
298 | } | |
299 | ||
300 | if (pcptr) | |
301 | *pcptr = adjust_pc + bk_table[bk_index].break_offset; | |
302 | if (lenptr) | |
303 | *lenptr = bk_table[bk_index].inst_len; | |
304 | ||
305 | #undef EXTRACT_LEN | |
306 | ||
307 | return &inst; | |
308 | } | |
309 | ||
27fd2f50 | 310 | static const gdb_byte * |
5f814c3b DL |
311 | score7_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, |
312 | int *lenptr) | |
27fd2f50 | 313 | { |
e17a4113 | 314 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
315 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
316 | int ret; | |
317 | unsigned int raw; | |
318 | ||
319 | if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0) | |
320 | { | |
a73c6dcd | 321 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5e29c264 | 322 | __FILE__, __LINE__); |
27fd2f50 | 323 | } |
e17a4113 | 324 | raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
27fd2f50 | 325 | |
e17a4113 | 326 | if (byte_order == BFD_ENDIAN_BIG) |
27fd2f50 Q |
327 | { |
328 | if (!(raw & 0x80008000)) | |
329 | { | |
330 | /* 16bits instruction. */ | |
331 | static gdb_byte big_breakpoint16[] = { 0x60, 0x02 }; | |
332 | *pcptr &= ~0x1; | |
333 | *lenptr = sizeof (big_breakpoint16); | |
334 | return big_breakpoint16; | |
335 | } | |
336 | else | |
337 | { | |
338 | /* 32bits instruction. */ | |
339 | static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 }; | |
340 | *pcptr &= ~0x3; | |
341 | *lenptr = sizeof (big_breakpoint32); | |
342 | return big_breakpoint32; | |
343 | } | |
344 | } | |
345 | else | |
346 | { | |
347 | if (!(raw & 0x80008000)) | |
348 | { | |
349 | /* 16bits instruction. */ | |
350 | static gdb_byte little_breakpoint16[] = { 0x02, 0x60 }; | |
351 | *pcptr &= ~0x1; | |
352 | *lenptr = sizeof (little_breakpoint16); | |
353 | return little_breakpoint16; | |
354 | } | |
355 | else | |
356 | { | |
357 | /* 32bits instruction. */ | |
358 | static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 }; | |
359 | *pcptr &= ~0x3; | |
360 | *lenptr = sizeof (little_breakpoint32); | |
361 | return little_breakpoint32; | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
5f814c3b DL |
366 | static const gdb_byte * |
367 | score3_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, | |
368 | int *lenptr) | |
369 | { | |
370 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
371 | CORE_ADDR adjust_pc = *pcptr; | |
372 | int len; | |
373 | static gdb_byte score_break_insns[6][6] = { | |
374 | /* The following three instructions are big endian. */ | |
375 | { 0x00, 0x20 }, | |
376 | { 0x80, 0x00, 0x00, 0x06 }, | |
377 | { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }, | |
378 | /* The following three instructions are little endian. */ | |
379 | { 0x20, 0x00 }, | |
380 | { 0x00, 0x80, 0x06, 0x00 }, | |
381 | { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }}; | |
382 | ||
383 | gdb_byte *p = NULL; | |
384 | int index = 0; | |
385 | ||
386 | score3_adjust_pc_and_fetch_inst (&adjust_pc, &len, byte_order); | |
387 | ||
388 | index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (len / 2 - 1); | |
389 | p = score_break_insns[index]; | |
390 | ||
391 | *pcptr = adjust_pc; | |
392 | *lenptr = len; | |
393 | ||
394 | return p; | |
395 | } | |
396 | ||
397 | static CORE_ADDR | |
398 | score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr) | |
399 | { | |
400 | CORE_ADDR adjust_pc = bpaddr; | |
401 | ||
402 | if (target_mach == bfd_mach_score3) | |
403 | score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL, | |
404 | gdbarch_byte_order (gdbarch)); | |
405 | else | |
406 | adjust_pc = align_down (adjust_pc, 2); | |
407 | ||
408 | return adjust_pc; | |
409 | } | |
410 | ||
27fd2f50 Q |
411 | static CORE_ADDR |
412 | score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr) | |
413 | { | |
414 | return align_down (addr, 16); | |
415 | } | |
416 | ||
417 | static void | |
418 | score_xfer_register (struct regcache *regcache, int regnum, int length, | |
419 | enum bfd_endian endian, gdb_byte *readbuf, | |
420 | const gdb_byte *writebuf, int buf_offset) | |
421 | { | |
422 | int reg_offset = 0; | |
5f814c3b DL |
423 | gdb_assert (regnum >= 0 |
424 | && regnum < ((target_mach == bfd_mach_score7) ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
425 | |
426 | switch (endian) | |
427 | { | |
428 | case BFD_ENDIAN_BIG: | |
429 | reg_offset = SCORE_REGSIZE - length; | |
430 | break; | |
431 | case BFD_ENDIAN_LITTLE: | |
432 | reg_offset = 0; | |
433 | break; | |
434 | case BFD_ENDIAN_UNKNOWN: | |
435 | reg_offset = 0; | |
436 | break; | |
437 | default: | |
a73c6dcd | 438 | error (_("Error: score_xfer_register in file:%s, line:%d!"), |
5e29c264 | 439 | __FILE__, __LINE__); |
27fd2f50 Q |
440 | } |
441 | ||
442 | if (readbuf != NULL) | |
443 | regcache_cooked_read_part (regcache, regnum, reg_offset, length, | |
444 | readbuf + buf_offset); | |
445 | if (writebuf != NULL) | |
446 | regcache_cooked_write_part (regcache, regnum, reg_offset, length, | |
447 | writebuf + buf_offset); | |
448 | } | |
449 | ||
450 | static enum return_value_convention | |
c055b101 | 451 | score_return_value (struct gdbarch *gdbarch, struct type *func_type, |
5f814c3b | 452 | struct type *type, struct regcache *regcache, |
27fd2f50 Q |
453 | gdb_byte * readbuf, const gdb_byte * writebuf) |
454 | { | |
455 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
456 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
457 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
458 | return RETURN_VALUE_STRUCT_CONVENTION; | |
459 | else | |
460 | { | |
461 | int offset; | |
462 | int regnum; | |
463 | for (offset = 0, regnum = SCORE_A0_REGNUM; | |
464 | offset < TYPE_LENGTH (type); | |
465 | offset += SCORE_REGSIZE, regnum++) | |
466 | { | |
467 | int xfer = SCORE_REGSIZE; | |
468 | if (offset + xfer > TYPE_LENGTH (type)) | |
469 | xfer = TYPE_LENGTH (type) - offset; | |
4c6b5505 | 470 | score_xfer_register (regcache, regnum, xfer, |
5f814c3b | 471 | gdbarch_byte_order(gdbarch), |
27fd2f50 Q |
472 | readbuf, writebuf, offset); |
473 | } | |
474 | return RETURN_VALUE_REGISTER_CONVENTION; | |
475 | } | |
476 | } | |
477 | ||
478 | static struct frame_id | |
94afd7a6 | 479 | score_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
27fd2f50 Q |
480 | { |
481 | return frame_id_build ( | |
94afd7a6 UW |
482 | get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM), |
483 | get_frame_pc (this_frame)); | |
27fd2f50 Q |
484 | } |
485 | ||
486 | static int | |
487 | score_type_needs_double_align (struct type *type) | |
488 | { | |
489 | enum type_code typecode = TYPE_CODE (type); | |
490 | ||
5e29c264 Q |
491 | if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8) |
492 | || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)) | |
27fd2f50 Q |
493 | return 1; |
494 | else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION) | |
495 | { | |
496 | int i, n; | |
497 | ||
498 | n = TYPE_NFIELDS (type); | |
499 | for (i = 0; i < n; i++) | |
500 | if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i))) | |
501 | return 1; | |
502 | return 0; | |
503 | } | |
504 | return 0; | |
505 | } | |
506 | ||
507 | static CORE_ADDR | |
508 | score_push_dummy_call (struct gdbarch *gdbarch, struct value *function, | |
509 | struct regcache *regcache, CORE_ADDR bp_addr, | |
510 | int nargs, struct value **args, CORE_ADDR sp, | |
511 | int struct_return, CORE_ADDR struct_addr) | |
512 | { | |
e17a4113 | 513 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
514 | int argnum; |
515 | int argreg; | |
516 | int arglen = 0; | |
517 | CORE_ADDR stack_offset = 0; | |
518 | CORE_ADDR addr = 0; | |
519 | ||
520 | /* Step 1, Save RA. */ | |
521 | regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr); | |
522 | ||
523 | /* Step 2, Make space on the stack for the args. */ | |
524 | struct_addr = align_down (struct_addr, 16); | |
525 | sp = align_down (sp, 16); | |
526 | for (argnum = 0; argnum < nargs; argnum++) | |
527 | arglen += align_up (TYPE_LENGTH (value_type (args[argnum])), | |
528 | SCORE_REGSIZE); | |
529 | sp -= align_up (arglen, 16); | |
530 | ||
531 | argreg = SCORE_BEGIN_ARG_REGNUM; | |
532 | ||
5e29c264 Q |
533 | /* Step 3, Check if struct return then save the struct address to |
534 | r4 and increase the stack_offset by 4. */ | |
27fd2f50 Q |
535 | if (struct_return) |
536 | { | |
537 | regcache_cooked_write_unsigned (regcache, argreg++, struct_addr); | |
538 | stack_offset += SCORE_REGSIZE; | |
539 | } | |
540 | ||
541 | /* Step 4, Load arguments: | |
5e29c264 Q |
542 | If arg length is too long (> 4 bytes), then split the arg and |
543 | save every parts. */ | |
27fd2f50 Q |
544 | for (argnum = 0; argnum < nargs; argnum++) |
545 | { | |
546 | struct value *arg = args[argnum]; | |
547 | struct type *arg_type = check_typedef (value_type (arg)); | |
27fd2f50 Q |
548 | enum type_code typecode = TYPE_CODE (arg_type); |
549 | const gdb_byte *val = value_contents (arg); | |
550 | int downward_offset = 0; | |
1cfd2c3e JB |
551 | int odd_sized_struct_p; |
552 | int arg_last_part_p = 0; | |
27fd2f50 | 553 | |
1cfd2c3e JB |
554 | arglen = TYPE_LENGTH (arg_type); |
555 | odd_sized_struct_p = (arglen > SCORE_REGSIZE | |
5e29c264 | 556 | && arglen % SCORE_REGSIZE != 0); |
27fd2f50 Q |
557 | |
558 | /* If a arg should be aligned to 8 bytes (long long or double), | |
559 | the value should be put to even register numbers. */ | |
560 | if (score_type_needs_double_align (arg_type)) | |
561 | { | |
562 | if (argreg & 1) | |
563 | argreg++; | |
564 | } | |
565 | ||
566 | /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose | |
567 | the default "downward"/"upward" method: | |
568 | ||
569 | Example: | |
570 | ||
571 | struct struc | |
572 | { | |
573 | char a; char b; char c; | |
574 | } s = {'a', 'b', 'c'}; | |
575 | ||
576 | Big endian: s = {X, 'a', 'b', 'c'} | |
577 | Little endian: s = {'a', 'b', 'c', X} | |
578 | ||
579 | Where X is a hole. */ | |
580 | ||
5f814c3b | 581 | if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG |
27fd2f50 Q |
582 | && (typecode == TYPE_CODE_STRUCT |
583 | || typecode == TYPE_CODE_UNION) | |
584 | && argreg > SCORE_LAST_ARG_REGNUM | |
585 | && arglen < SCORE_REGSIZE) | |
586 | downward_offset += (SCORE_REGSIZE - arglen); | |
587 | ||
588 | while (arglen > 0) | |
589 | { | |
590 | int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE; | |
e17a4113 | 591 | ULONGEST regval = extract_unsigned_integer (val, partial_len, |
5f814c3b | 592 | byte_order); |
27fd2f50 Q |
593 | |
594 | /* The last part of a arg should shift left when | |
4c6b5505 | 595 | gdbarch_byte_order is BFD_ENDIAN_BIG. */ |
5f814c3b | 596 | if (byte_order == BFD_ENDIAN_BIG |
27fd2f50 Q |
597 | && arg_last_part_p == 1 |
598 | && (typecode == TYPE_CODE_STRUCT | |
599 | || typecode == TYPE_CODE_UNION)) | |
600 | regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT); | |
601 | ||
602 | /* Always increase the stack_offset and save args to stack. */ | |
603 | addr = sp + stack_offset + downward_offset; | |
604 | write_memory (addr, val, partial_len); | |
605 | ||
606 | if (argreg <= SCORE_LAST_ARG_REGNUM) | |
607 | { | |
608 | regcache_cooked_write_unsigned (regcache, argreg++, regval); | |
609 | if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2) | |
610 | arg_last_part_p = 1; | |
611 | } | |
612 | ||
613 | val += partial_len; | |
614 | arglen -= partial_len; | |
615 | stack_offset += align_up (partial_len, SCORE_REGSIZE); | |
616 | } | |
617 | } | |
618 | ||
619 | /* Step 5, Save SP. */ | |
620 | regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp); | |
621 | ||
622 | return sp; | |
623 | } | |
624 | ||
27fd2f50 | 625 | static CORE_ADDR |
5f814c3b | 626 | score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
27fd2f50 Q |
627 | { |
628 | CORE_ADDR cpc = pc; | |
629 | int iscan = 32, stack_sub = 0; | |
630 | while (iscan-- > 0) | |
631 | { | |
5f814c3b | 632 | inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL); |
27fd2f50 Q |
633 | if (!inst) |
634 | break; | |
5f814c3b | 635 | if ((inst->len == 4) && !stack_sub |
27fd2f50 Q |
636 | && (G_FLD (inst->v, 29, 25) == 0x1 |
637 | && G_FLD (inst->v, 24, 20) == 0x0)) | |
638 | { | |
639 | /* addi r0, offset */ | |
5f814c3b DL |
640 | stack_sub = cpc + SCORE_INSTLEN; |
641 | pc = cpc + SCORE_INSTLEN; | |
27fd2f50 | 642 | } |
5f814c3b DL |
643 | else if ((inst->len == 4) |
644 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
645 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
646 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
647 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
648 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
27fd2f50 Q |
649 | { |
650 | /* mv r2, r0 */ | |
651 | pc = cpc + SCORE_INSTLEN; | |
652 | break; | |
653 | } | |
5f814c3b DL |
654 | else if ((inst->len == 2) |
655 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
656 | && (G_FLD (inst->v, 11, 8) == 0x2) | |
657 | && (G_FLD (inst->v, 7, 4) == 0x0) | |
658 | && (G_FLD (inst->v, 3, 0) == 0x3)) | |
27fd2f50 Q |
659 | { |
660 | /* mv! r2, r0 */ | |
661 | pc = cpc + SCORE16_INSTLEN; | |
662 | break; | |
663 | } | |
5f814c3b | 664 | else if ((inst->len == 2) |
27fd2f50 Q |
665 | && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */ |
666 | || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */ | |
667 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
668 | && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */ | |
669 | break; | |
5f814c3b | 670 | else if ((inst->len == 4) |
27fd2f50 Q |
671 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ |
672 | || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */ | |
673 | || (G_FLD (inst->v, 29, 25) == 0x0 | |
674 | && G_FLD (inst->v, 6, 1) == 0x4))) /* br */ | |
675 | break; | |
676 | ||
5f814c3b | 677 | cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN; |
27fd2f50 Q |
678 | } |
679 | return pc; | |
680 | } | |
681 | ||
5f814c3b DL |
682 | static CORE_ADDR |
683 | score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) | |
27fd2f50 | 684 | { |
5f814c3b DL |
685 | CORE_ADDR cpc = pc; |
686 | int iscan = 32, stack_sub = 0; | |
687 | while (iscan-- > 0) | |
688 | { | |
689 | inst_t *inst | |
690 | = score3_adjust_pc_and_fetch_inst (&cpc, NULL, gdbarch_byte_order (gdbarch)); | |
27fd2f50 | 691 | |
5f814c3b DL |
692 | if (!inst) |
693 | break; | |
694 | if (inst->len == 4 && !stack_sub | |
695 | && (G_FLD (inst->v, 29, 25) == 0x1) | |
696 | && (G_FLD (inst->v, 19, 17) == 0x0) | |
697 | && (G_FLD (inst->v, 24, 20) == 0x0)) | |
698 | { | |
699 | /* addi r0, offset */ | |
700 | stack_sub = cpc + inst->len; | |
701 | pc = cpc + inst->len; | |
702 | } | |
703 | else if (inst->len == 4 | |
704 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
705 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
706 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
707 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
708 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
709 | { | |
710 | /* mv r2, r0 */ | |
711 | pc = cpc + inst->len; | |
712 | break; | |
713 | } | |
714 | else if ((inst->len == 2) | |
715 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
716 | && (G_FLD (inst->v, 9, 5) == 0x2) | |
717 | && (G_FLD (inst->v, 4, 0) == 0x0)) | |
718 | { | |
719 | /* mv! r2, r0 */ | |
720 | pc = cpc + inst->len; | |
721 | break; | |
722 | } | |
723 | else if (inst->len == 2 | |
724 | && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */ | |
725 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
726 | && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */ | |
727 | break; | |
728 | else if (inst->len == 4 | |
729 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ | |
730 | || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */ | |
731 | break; | |
732 | ||
733 | cpc += inst->len; | |
734 | } | |
735 | return pc; | |
736 | } | |
737 | ||
738 | static int | |
739 | score7_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
740 | { | |
741 | inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL); | |
742 | ||
743 | if (inst->v == 0x23) | |
744 | return 1; /* mv! r0, r2 */ | |
745 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
746 | && G_FLD (inst->v, 3, 0) == 0xa) | |
747 | return 1; /* pop! */ | |
27fd2f50 Q |
748 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
749 | && G_FLD (inst->v, 7, 0) == 0x34) | |
750 | return 1; /* br! r3 */ | |
751 | else if (G_FLD (inst->v, 29, 15) == 0x2 | |
752 | && G_FLD (inst->v, 6, 1) == 0x2b) | |
753 | return 1; /* mv r0, r2 */ | |
754 | else if (G_FLD (inst->v, 29, 25) == 0x0 | |
755 | && G_FLD (inst->v, 6, 1) == 0x4 | |
756 | && G_FLD (inst->v, 19, 15) == 0x3) | |
757 | return 1; /* br r3 */ | |
758 | else | |
759 | return 0; | |
760 | } | |
761 | ||
5f814c3b DL |
762 | static int |
763 | score3_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
764 | { | |
765 | CORE_ADDR pc = cur_pc; | |
766 | inst_t *inst | |
767 | = score3_adjust_pc_and_fetch_inst (&pc, NULL, gdbarch_byte_order (gdbarch)); | |
768 | ||
769 | if (inst->len == 2 | |
770 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
771 | && (G_FLD (inst->v, 9, 5) == 0x0) | |
772 | && (G_FLD (inst->v, 4, 0) == 0x2)) | |
773 | return 1; /* mv! r0, r2 */ | |
774 | else if (inst->len == 4 | |
775 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
776 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
777 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
778 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
779 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
780 | return 1; /* mv r0, r2 */ | |
781 | else if (inst->len == 2 | |
782 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
783 | && (G_FLD (inst->v, 11, 5) == 0x2)) | |
784 | return 1; /* pop! */ | |
785 | else if (inst->len == 2 | |
786 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
787 | && (G_FLD (inst->v, 11, 7) == 0x0) | |
788 | && (G_FLD (inst->v, 6, 5) == 0x2)) | |
789 | return 1; /* rpop! */ | |
790 | else if (inst->len == 2 | |
791 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
792 | && (G_FLD (inst->v, 11, 5) == 0x4) | |
793 | && (G_FLD (inst->v, 4, 0) == 0x3)) | |
794 | return 1; /* br! r3 */ | |
795 | else if (inst->len == 4 | |
796 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
797 | && (G_FLD (inst->v, 24, 20) == 0x0) | |
798 | && (G_FLD (inst->v, 19, 15) == 0x3) | |
799 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
800 | && (G_FLD (inst->v, 9, 0) == 0x8)) | |
801 | return 1; /* br r3 */ | |
802 | else | |
803 | return 0; | |
804 | } | |
805 | ||
806 | static char * | |
807 | score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size) | |
808 | { | |
809 | int ret; | |
810 | char *memblock = NULL; | |
811 | ||
812 | if (size < 0) | |
813 | { | |
a73c6dcd | 814 | error (_("Error: malloc size < 0 in file:%s, line:%d!"), |
5f814c3b DL |
815 | __FILE__, __LINE__); |
816 | return NULL; | |
817 | } | |
818 | else if (size == 0) | |
819 | return NULL; | |
820 | ||
821 | memblock = (char *) xmalloc (size); | |
822 | memset (memblock, 0, size); | |
823 | ret = target_read_memory (addr & ~0x3, memblock, size); | |
824 | if (ret) | |
825 | { | |
a73c6dcd | 826 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
827 | __FILE__, __LINE__); |
828 | return NULL; | |
829 | } | |
830 | return memblock; | |
831 | } | |
832 | ||
27fd2f50 | 833 | static void |
5f814c3b DL |
834 | score7_free_memblock (char *memblock) |
835 | { | |
836 | xfree (memblock); | |
837 | } | |
838 | ||
839 | static void | |
840 | score7_adjust_memblock_ptr (char **memblock, CORE_ADDR prev_pc, | |
841 | CORE_ADDR cur_pc) | |
842 | { | |
843 | if (prev_pc == -1) | |
844 | { | |
845 | /* First time call this function, do nothing. */ | |
846 | } | |
847 | else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0) | |
848 | { | |
849 | /* First 16-bit instruction, then 32-bit instruction. */ | |
850 | *memblock += SCORE_INSTLEN; | |
851 | } | |
852 | else if (cur_pc - prev_pc == 4) | |
853 | { | |
854 | /* Is 32-bit instruction, increase MEMBLOCK by 4. */ | |
855 | *memblock += SCORE_INSTLEN; | |
856 | } | |
857 | } | |
858 | ||
859 | static void | |
860 | score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
94afd7a6 | 861 | struct frame_info *this_frame, |
27fd2f50 Q |
862 | struct score_frame_cache *this_cache) |
863 | { | |
94afd7a6 | 864 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
27fd2f50 | 865 | CORE_ADDR sp; |
5e29c264 | 866 | CORE_ADDR fp; |
27fd2f50 Q |
867 | CORE_ADDR cur_pc = startaddr; |
868 | ||
869 | int sp_offset = 0; | |
870 | int ra_offset = 0; | |
871 | int fp_offset = 0; | |
872 | int ra_offset_p = 0; | |
873 | int fp_offset_p = 0; | |
874 | int inst_len = 0; | |
875 | ||
5e29c264 Q |
876 | char *memblock = NULL; |
877 | char *memblock_ptr = NULL; | |
878 | CORE_ADDR prev_pc = -1; | |
879 | ||
880 | /* Allocate MEMBLOCK if PC - STARTADDR > 0. */ | |
881 | memblock_ptr = memblock = | |
5f814c3b | 882 | score7_malloc_and_get_memblock (startaddr, pc - startaddr); |
5e29c264 | 883 | |
94afd7a6 UW |
884 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
885 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
27fd2f50 | 886 | |
5e29c264 | 887 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) |
27fd2f50 | 888 | { |
5e29c264 Q |
889 | inst_t *inst = NULL; |
890 | if (memblock != NULL) | |
891 | { | |
892 | /* Reading memory block from target succefully and got all | |
893 | the instructions(from STARTADDR to PC) needed. */ | |
5f814c3b DL |
894 | score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc); |
895 | inst = score7_fetch_inst (gdbarch, cur_pc, memblock); | |
5e29c264 Q |
896 | } |
897 | else | |
898 | { | |
899 | /* Otherwise, we fetch 4 bytes from target, and GDB also | |
900 | work correctly. */ | |
5f814c3b | 901 | inst = score7_fetch_inst (gdbarch, cur_pc, NULL); |
5e29c264 Q |
902 | } |
903 | ||
5f814c3b DL |
904 | /* FIXME: make a full-power prologue analyzer */ |
905 | if (inst->len == 2) | |
27fd2f50 Q |
906 | { |
907 | inst_len = SCORE16_INSTLEN; | |
908 | ||
909 | if (G_FLD (inst->v, 14, 12) == 0x2 | |
910 | && G_FLD (inst->v, 3, 0) == 0xe) | |
911 | { | |
912 | /* push! */ | |
913 | sp_offset += 4; | |
914 | ||
915 | if (G_FLD (inst->v, 11, 7) == 0x6 | |
916 | && ra_offset_p == 0) | |
917 | { | |
918 | /* push! r3, [r0] */ | |
919 | ra_offset = sp_offset; | |
920 | ra_offset_p = 1; | |
921 | } | |
922 | else if (G_FLD (inst->v, 11, 7) == 0x4 | |
923 | && fp_offset_p == 0) | |
924 | { | |
925 | /* push! r2, [r0] */ | |
926 | fp_offset = sp_offset; | |
927 | fp_offset_p = 1; | |
928 | } | |
929 | } | |
930 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
931 | && G_FLD (inst->v, 3, 0) == 0xa) | |
932 | { | |
933 | /* pop! */ | |
934 | sp_offset -= 4; | |
935 | } | |
936 | else if (G_FLD (inst->v, 14, 7) == 0xc1 | |
937 | && G_FLD (inst->v, 2, 0) == 0x0) | |
938 | { | |
939 | /* subei! r0, n */ | |
940 | sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3)); | |
941 | } | |
942 | else if (G_FLD (inst->v, 14, 7) == 0xc0 | |
943 | && G_FLD (inst->v, 2, 0) == 0x0) | |
944 | { | |
945 | /* addei! r0, n */ | |
946 | sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3)); | |
947 | } | |
948 | } | |
949 | else | |
950 | { | |
951 | inst_len = SCORE_INSTLEN; | |
952 | ||
5f814c3b DL |
953 | if (G_FLD(inst->v, 29, 25) == 0x3 |
954 | && G_FLD(inst->v, 2, 0) == 0x4 | |
955 | && G_FLD(inst->v, 19, 15) == 0) | |
27fd2f50 | 956 | { |
5f814c3b DL |
957 | /* sw rD, [r0, offset]+ */ |
958 | sp_offset += SCORE_INSTLEN; | |
959 | ||
960 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
961 | { | |
962 | /* rD = r3 */ | |
963 | if (ra_offset_p == 0) | |
964 | { | |
965 | ra_offset = sp_offset; | |
966 | ra_offset_p = 1; | |
967 | } | |
968 | } | |
969 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
970 | { | |
971 | /* rD = r2 */ | |
972 | if (fp_offset_p == 0) | |
973 | { | |
974 | fp_offset = sp_offset; | |
975 | fp_offset_p = 1; | |
976 | } | |
977 | } | |
27fd2f50 | 978 | } |
5f814c3b DL |
979 | else if (G_FLD(inst->v, 29, 25) == 0x14 |
980 | && G_FLD(inst->v, 19,15) == 0) | |
27fd2f50 | 981 | { |
5f814c3b DL |
982 | /* sw rD, [r0, offset] */ |
983 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
984 | { | |
985 | /* rD = r3 */ | |
986 | ra_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
987 | ra_offset_p = 1; | |
988 | } | |
989 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
990 | { | |
991 | /* rD = r2 */ | |
992 | fp_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
993 | fp_offset_p = 1; | |
994 | } | |
27fd2f50 Q |
995 | } |
996 | else if (G_FLD (inst->v, 29, 15) == 0x1c60 | |
997 | && G_FLD (inst->v, 2, 0) == 0x0) | |
998 | { | |
999 | /* lw r3, [r0]+, 4 */ | |
1000 | sp_offset -= SCORE_INSTLEN; | |
1001 | ra_offset_p = 1; | |
1002 | } | |
1003 | else if (G_FLD (inst->v, 29, 15) == 0x1c40 | |
1004 | && G_FLD (inst->v, 2, 0) == 0x0) | |
1005 | { | |
1006 | /* lw r2, [r0]+, 4 */ | |
1007 | sp_offset -= SCORE_INSTLEN; | |
1008 | fp_offset_p = 1; | |
1009 | } | |
1010 | ||
1011 | else if (G_FLD (inst->v, 29, 17) == 0x100 | |
1012 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1013 | { | |
1014 | /* addi r0, -offset */ | |
1015 | sp_offset += 65536 - G_FLD (inst->v, 16, 1); | |
1016 | } | |
1017 | else if (G_FLD (inst->v, 29, 17) == 0x110 | |
1018 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1019 | { | |
1020 | /* addi r2, offset */ | |
1021 | if (pc - cur_pc > 4) | |
1022 | { | |
1023 | unsigned int save_v = inst->v; | |
1024 | inst_t *inst2 = | |
5f814c3b | 1025 | score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL); |
27fd2f50 | 1026 | if (inst2->v == 0x23) |
5e29c264 Q |
1027 | { |
1028 | /* mv! r0, r2 */ | |
1029 | sp_offset -= G_FLD (save_v, 16, 1); | |
1030 | } | |
27fd2f50 Q |
1031 | } |
1032 | } | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | /* Save RA. */ | |
1037 | if (ra_offset_p == 1) | |
1038 | { | |
1039 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1040 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1041 | sp + sp_offset - ra_offset; | |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1046 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1047 | } | |
1048 | ||
1049 | /* Save FP. */ | |
1050 | if (fp_offset_p == 1) | |
1051 | { | |
1052 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1053 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1054 | sp + sp_offset - fp_offset; | |
1055 | } | |
1056 | ||
5e29c264 Q |
1057 | /* Save SP and FP. */ |
1058 | this_cache->base = sp + sp_offset; | |
1059 | this_cache->fp = fp; | |
1060 | ||
1061 | /* Don't forget to free MEMBLOCK if we allocated it. */ | |
1062 | if (memblock_ptr != NULL) | |
5f814c3b DL |
1063 | score7_free_memblock (memblock_ptr); |
1064 | } | |
1065 | ||
1066 | static void | |
1067 | score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
1068 | struct frame_info *this_frame, | |
1069 | struct score_frame_cache *this_cache) | |
1070 | { | |
1071 | CORE_ADDR sp; | |
1072 | CORE_ADDR fp; | |
1073 | CORE_ADDR cur_pc = startaddr; | |
1074 | enum bfd_endian byte_order = gdbarch_byte_order (get_frame_arch (this_frame)); | |
1075 | ||
1076 | int sp_offset = 0; | |
1077 | int ra_offset = 0; | |
1078 | int fp_offset = 0; | |
1079 | int ra_offset_p = 0; | |
1080 | int fp_offset_p = 0; | |
1081 | int inst_len = 0; | |
1082 | ||
1083 | CORE_ADDR prev_pc = -1; | |
1084 | ||
1085 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); | |
1086 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
1087 | ||
1088 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) | |
1089 | { | |
1090 | inst_t *inst = NULL; | |
1091 | ||
1092 | inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order); | |
1093 | ||
1094 | /* FIXME: make a full-power prologue analyzer */ | |
1095 | if (inst->len == 2) | |
1096 | { | |
1097 | if (G_FLD (inst->v, 14, 12) == 0x0 | |
1098 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1099 | && G_FLD (inst->v, 6, 5) == 0x3) | |
1100 | { | |
1101 | /* push! */ | |
1102 | sp_offset += 4; | |
1103 | ||
1104 | if (G_FLD (inst->v, 4, 0) == 0x3 | |
1105 | && ra_offset_p == 0) | |
1106 | { | |
1107 | /* push! r3, [r0] */ | |
1108 | ra_offset = sp_offset; | |
1109 | ra_offset_p = 1; | |
1110 | } | |
1111 | else if (G_FLD (inst->v, 4, 0) == 0x2 | |
1112 | && fp_offset_p == 0) | |
1113 | { | |
1114 | /* push! r2, [r0] */ | |
1115 | fp_offset = sp_offset; | |
1116 | fp_offset_p = 1; | |
1117 | } | |
1118 | } | |
1119 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1120 | && G_FLD (inst->v, 11, 10) == 0x3) | |
1121 | { | |
1122 | /* rpush! */ | |
1123 | int start_r = G_FLD (inst->v, 9, 5); | |
1124 | int cnt = G_FLD (inst->v, 4, 0); | |
1125 | ||
1126 | if ((ra_offset_p == 0) | |
1127 | && (start_r <= SCORE_RA_REGNUM) | |
1128 | && (SCORE_RA_REGNUM < start_r + cnt)) | |
1129 | { | |
1130 | /* rpush! contains r3 */ | |
1131 | ra_offset_p = 1; | |
1132 | ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4; | |
1133 | } | |
1134 | ||
1135 | if ((fp_offset_p == 0) | |
1136 | && (start_r <= SCORE_FP_REGNUM) | |
1137 | && (SCORE_FP_REGNUM < start_r + cnt)) | |
1138 | { | |
1139 | /* rpush! contains r2 */ | |
1140 | fp_offset_p = 1; | |
1141 | fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4; | |
1142 | } | |
1143 | ||
1144 | sp_offset += 4 * cnt; | |
1145 | } | |
1146 | else if (G_FLD (inst->v, 14, 12) == 0x0 | |
1147 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1148 | && G_FLD (inst->v, 6, 5) == 0x2) | |
1149 | { | |
1150 | /* pop! */ | |
1151 | sp_offset -= 4; | |
1152 | } | |
1153 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1154 | && G_FLD (inst->v, 11, 10) == 0x2) | |
1155 | { | |
1156 | /* rpop! */ | |
1157 | sp_offset -= 4 * G_FLD (inst->v, 4, 0); | |
1158 | } | |
1159 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1160 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1161 | && G_FLD (inst->v, 9, 6) == 0x0) | |
1162 | { | |
1163 | /* addi! r0, -offset */ | |
1164 | int imm = G_FLD (inst->v, 5, 0); | |
1165 | if (imm >> 5) | |
1166 | imm = -(0x3F - imm + 1); | |
1167 | sp_offset -= imm; | |
1168 | } | |
1169 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1170 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1171 | && G_FLD (inst->v, 9, 6) == 0x2) | |
1172 | { | |
1173 | /* addi! r2, offset */ | |
1174 | if (pc - cur_pc >= 2) | |
1175 | { | |
1176 | unsigned int save_v = inst->v; | |
1177 | inst_t *inst2; | |
1178 | ||
1179 | cur_pc += inst->len; | |
1180 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, byte_order); | |
1181 | ||
1182 | if (inst2->len == 2 | |
1183 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1184 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1185 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1186 | { | |
1187 | /* mv! r0, r2 */ | |
1188 | int imm = G_FLD (inst->v, 5, 0); | |
1189 | if (imm >> 5) | |
1190 | imm = -(0x3F - imm + 1); | |
1191 | sp_offset -= imm; | |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | else if (inst->len == 4) | |
1197 | { | |
1198 | if (G_FLD (inst->v, 29, 25) == 0x3 | |
1199 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1200 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1201 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1202 | { | |
1203 | /* sw r3, [r0, offset]+ */ | |
1204 | sp_offset += inst->len; | |
1205 | if (ra_offset_p == 0) | |
1206 | { | |
1207 | ra_offset = sp_offset; | |
1208 | ra_offset_p = 1; | |
1209 | } | |
1210 | } | |
1211 | else if (G_FLD (inst->v, 29, 25) == 0x3 | |
1212 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1213 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1214 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1215 | { | |
1216 | /* sw r2, [r0, offset]+ */ | |
1217 | sp_offset += inst->len; | |
1218 | if (fp_offset_p == 0) | |
1219 | { | |
1220 | fp_offset = sp_offset; | |
1221 | fp_offset_p = 1; | |
1222 | } | |
1223 | } | |
1224 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1225 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1226 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1227 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1228 | { | |
1229 | /* lw r3, [r0]+, 4 */ | |
1230 | sp_offset -= inst->len; | |
1231 | ra_offset_p = 1; | |
1232 | } | |
1233 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1234 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1235 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1236 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1237 | { | |
1238 | /* lw r2, [r0]+, 4 */ | |
1239 | sp_offset -= inst->len; | |
1240 | fp_offset_p = 1; | |
1241 | } | |
1242 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1243 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1244 | && G_FLD (inst->v, 24, 20) == 0x0 | |
1245 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1246 | { | |
1247 | /* addi r0, -offset */ | |
1248 | int imm = G_FLD (inst->v, 16, 1); | |
1249 | if (imm >> 15) | |
1250 | imm = -(0xFFFF - imm + 1); | |
1251 | sp_offset -= imm; | |
1252 | } | |
1253 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1254 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1255 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1256 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1257 | { | |
1258 | /* addi r2, offset */ | |
1259 | if (pc - cur_pc >= 2) | |
1260 | { | |
1261 | unsigned int save_v = inst->v; | |
1262 | inst_t *inst2; | |
1263 | ||
1264 | cur_pc += inst->len; | |
1265 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, byte_order); | |
1266 | ||
1267 | if (inst2->len == 2 | |
1268 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1269 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1270 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1271 | { | |
1272 | /* mv! r0, r2 */ | |
1273 | int imm = G_FLD (inst->v, 16, 1); | |
1274 | if (imm >> 15) | |
1275 | imm = -(0xFFFF - imm + 1); | |
1276 | sp_offset -= imm; | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | /* Save RA. */ | |
1284 | if (ra_offset_p == 1) | |
1285 | { | |
1286 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1287 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1288 | sp + sp_offset - ra_offset; | |
1289 | } | |
1290 | else | |
1291 | { | |
1292 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1293 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1294 | } | |
1295 | ||
1296 | /* Save FP. */ | |
1297 | if (fp_offset_p == 1) | |
1298 | { | |
1299 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1300 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1301 | sp + sp_offset - fp_offset; | |
1302 | } | |
1303 | ||
1304 | /* Save SP and FP. */ | |
1305 | this_cache->base = sp + sp_offset; | |
1306 | this_cache->fp = fp; | |
27fd2f50 Q |
1307 | } |
1308 | ||
1309 | static struct score_frame_cache * | |
94afd7a6 | 1310 | score_make_prologue_cache (struct frame_info *this_frame, void **this_cache) |
27fd2f50 Q |
1311 | { |
1312 | struct score_frame_cache *cache; | |
1313 | ||
1314 | if ((*this_cache) != NULL) | |
1315 | return (*this_cache); | |
1316 | ||
1317 | cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache); | |
1318 | (*this_cache) = cache; | |
94afd7a6 | 1319 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
27fd2f50 Q |
1320 | |
1321 | /* Analyze the prologue. */ | |
1322 | { | |
94afd7a6 | 1323 | const CORE_ADDR pc = get_frame_pc (this_frame); |
27fd2f50 Q |
1324 | CORE_ADDR start_addr; |
1325 | ||
1326 | find_pc_partial_function (pc, NULL, &start_addr, NULL); | |
1327 | if (start_addr == 0) | |
1328 | return cache; | |
5f814c3b DL |
1329 | |
1330 | if (target_mach == bfd_mach_score3) | |
1331 | score3_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
1332 | else | |
1333 | score7_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
27fd2f50 Q |
1334 | } |
1335 | ||
1336 | /* Save SP. */ | |
1337 | trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base); | |
1338 | ||
1339 | return (*this_cache); | |
1340 | } | |
1341 | ||
1342 | static void | |
94afd7a6 | 1343 | score_prologue_this_id (struct frame_info *this_frame, void **this_cache, |
27fd2f50 Q |
1344 | struct frame_id *this_id) |
1345 | { | |
94afd7a6 | 1346 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1347 | this_cache); |
94afd7a6 | 1348 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
27fd2f50 Q |
1349 | } |
1350 | ||
94afd7a6 UW |
1351 | static struct value * |
1352 | score_prologue_prev_register (struct frame_info *this_frame, | |
1353 | void **this_cache, int regnum) | |
27fd2f50 | 1354 | { |
94afd7a6 | 1355 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1356 | this_cache); |
94afd7a6 | 1357 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
27fd2f50 Q |
1358 | } |
1359 | ||
1360 | static const struct frame_unwind score_prologue_unwind = | |
1361 | { | |
1362 | NORMAL_FRAME, | |
1363 | score_prologue_this_id, | |
94afd7a6 UW |
1364 | score_prologue_prev_register, |
1365 | NULL, | |
5f814c3b DL |
1366 | default_frame_sniffer, |
1367 | NULL | |
27fd2f50 Q |
1368 | }; |
1369 | ||
27fd2f50 | 1370 | static CORE_ADDR |
94afd7a6 | 1371 | score_prologue_frame_base_address (struct frame_info *this_frame, |
27fd2f50 Q |
1372 | void **this_cache) |
1373 | { | |
1374 | struct score_frame_cache *info = | |
94afd7a6 | 1375 | score_make_prologue_cache (this_frame, this_cache); |
5e29c264 | 1376 | return info->fp; |
27fd2f50 Q |
1377 | } |
1378 | ||
1379 | static const struct frame_base score_prologue_frame_base = | |
1380 | { | |
1381 | &score_prologue_unwind, | |
1382 | score_prologue_frame_base_address, | |
1383 | score_prologue_frame_base_address, | |
1384 | score_prologue_frame_base_address, | |
1385 | }; | |
1386 | ||
1387 | static const struct frame_base * | |
94afd7a6 | 1388 | score_prologue_frame_base_sniffer (struct frame_info *this_frame) |
27fd2f50 Q |
1389 | { |
1390 | return &score_prologue_frame_base; | |
1391 | } | |
1392 | ||
5f814c3b DL |
1393 | /* Core file support (dirty hack) |
1394 | ||
1395 | The core file MUST be generated by GNU/Linux on S+core */ | |
1396 | ||
1397 | static void | |
1398 | score7_linux_supply_gregset(const struct regset *regset, | |
1399 | struct regcache *regcache, | |
1400 | int regnum, const void *gregs_buf, size_t len) | |
1401 | { | |
1402 | int regno; | |
1403 | elf_gregset_t *gregs; | |
1404 | ||
1405 | gdb_assert (regset != NULL); | |
1406 | gdb_assert ((regcache != NULL) && (gregs_buf != NULL)); | |
1407 | ||
1408 | gregs = (elf_gregset_t *) gregs_buf; | |
1409 | ||
1410 | for (regno = 0; regno < 32; regno++) | |
1411 | if (regnum == -1 || regnum == regno) | |
1412 | regcache_raw_supply (regcache, regno, gregs->regs + regno); | |
1413 | ||
1414 | { | |
1415 | struct sreg { | |
1416 | int regnum; | |
1417 | void *buf; | |
1418 | } sregs [] = { | |
1419 | { 55, &(gregs->cel) }, /* CEL */ | |
1420 | { 54, &(gregs->ceh) }, /* CEH */ | |
1421 | { 53, &(gregs->sr0) }, /* sr0, i.e. cnt or COUNTER */ | |
1422 | { 52, &(gregs->sr1) }, /* sr1, i.e. lcr or LDCR */ | |
1423 | { 51, &(gregs->sr1) }, /* sr2, i.e. scr or STCR */ | |
1424 | ||
1425 | /* Exception occured at this address, exactly the PC we want */ | |
1426 | { 49, &(gregs->cp0_epc) }, /* PC */ | |
1427 | ||
1428 | { 38, &(gregs->cp0_ema) }, /* EMA */ | |
1429 | { 37, &(gregs->cp0_epc) }, /* EPC */ | |
1430 | { 34, &(gregs->cp0_ecr) }, /* ECR */ | |
1431 | { 33, &(gregs->cp0_condition) }, /* COND */ | |
1432 | { 32, &(gregs->cp0_psr) }, /* PSR */ | |
1433 | }; | |
1434 | ||
1435 | for (regno = 0; regno < sizeof(sregs)/sizeof(sregs[0]); regno++) | |
1436 | if (regnum == -1 || regnum == sregs[regno].regnum) | |
1437 | regcache_raw_supply (regcache, sregs[regno].regnum, sregs[regno].buf); | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | /* Return the appropriate register set from the core section identified | |
1442 | by SECT_NAME and SECT_SIZE. */ | |
1443 | ||
1444 | static const struct regset * | |
1445 | score7_linux_regset_from_core_section(struct gdbarch *gdbarch, | |
1446 | const char *sect_name, size_t sect_size) | |
1447 | { | |
1448 | struct gdbarch_tdep *tdep; | |
1449 | ||
1450 | gdb_assert (gdbarch != NULL); | |
1451 | gdb_assert (sect_name != NULL); | |
1452 | ||
1453 | tdep = gdbarch_tdep (gdbarch); | |
1454 | ||
1455 | if (strcmp(sect_name, ".reg") == 0 && sect_size == sizeof(elf_gregset_t)) | |
1456 | { | |
1457 | if (tdep->gregset == NULL) | |
1458 | tdep->gregset = regset_alloc (gdbarch, score7_linux_supply_gregset, NULL); | |
1459 | return tdep->gregset; | |
1460 | } | |
1461 | ||
1462 | return NULL; | |
1463 | } | |
1464 | ||
27fd2f50 Q |
1465 | static struct gdbarch * |
1466 | score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
1467 | { | |
1468 | struct gdbarch *gdbarch; | |
5f814c3b DL |
1469 | struct gdbarch_tdep *tdep; |
1470 | target_mach = info.bfd_arch_info->mach; | |
27fd2f50 Q |
1471 | |
1472 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1473 | if (arches != NULL) | |
1474 | { | |
1475 | return (arches->gdbarch); | |
1476 | } | |
5f814c3b DL |
1477 | tdep = xcalloc(1, sizeof(struct gdbarch_tdep)); |
1478 | gdbarch = gdbarch_alloc (&info, tdep); | |
27fd2f50 Q |
1479 | |
1480 | set_gdbarch_short_bit (gdbarch, 16); | |
1481 | set_gdbarch_int_bit (gdbarch, 32); | |
1482 | set_gdbarch_float_bit (gdbarch, 32); | |
1483 | set_gdbarch_double_bit (gdbarch, 64); | |
1484 | set_gdbarch_long_double_bit (gdbarch, 64); | |
5f814c3b | 1485 | #if WITH_SIM |
27fd2f50 | 1486 | set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno); |
5f814c3b | 1487 | #endif |
27fd2f50 Q |
1488 | set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM); |
1489 | set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM); | |
5f814c3b | 1490 | set_gdbarch_adjust_breakpoint_address (gdbarch, score_adjust_breakpoint_address); |
27fd2f50 Q |
1491 | set_gdbarch_register_type (gdbarch, score_register_type); |
1492 | set_gdbarch_frame_align (gdbarch, score_frame_align); | |
1493 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
30244cd8 | 1494 | set_gdbarch_unwind_sp (gdbarch, score_unwind_sp); |
5f814c3b | 1495 | set_gdbarch_unwind_pc (gdbarch, score_unwind_pc); |
27fd2f50 | 1496 | set_gdbarch_print_insn (gdbarch, score_print_insn); |
5f814c3b DL |
1497 | |
1498 | switch (target_mach) | |
1499 | { | |
1500 | case bfd_mach_score7: | |
1501 | set_gdbarch_breakpoint_from_pc (gdbarch, score7_breakpoint_from_pc); | |
1502 | set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue); | |
1503 | set_gdbarch_in_function_epilogue_p (gdbarch, score7_in_function_epilogue_p); | |
1504 | set_gdbarch_register_name (gdbarch, score7_register_name); | |
1505 | set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS); | |
1506 | /* Core file support. */ | |
1507 | set_gdbarch_regset_from_core_section (gdbarch, score7_linux_regset_from_core_section); | |
1508 | break; | |
1509 | ||
1510 | case bfd_mach_score3: | |
1511 | set_gdbarch_breakpoint_from_pc (gdbarch, score3_breakpoint_from_pc); | |
1512 | set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue); | |
1513 | set_gdbarch_in_function_epilogue_p (gdbarch, score3_in_function_epilogue_p); | |
1514 | set_gdbarch_register_name (gdbarch, score3_register_name); | |
1515 | set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS); | |
1516 | break; | |
1517 | } | |
5e29c264 Q |
1518 | |
1519 | /* Watchpoint hooks. */ | |
1520 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); | |
1521 | ||
1522 | /* Dummy frame hooks. */ | |
27fd2f50 | 1523 | set_gdbarch_return_value (gdbarch, score_return_value); |
5e29c264 | 1524 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
94afd7a6 | 1525 | set_gdbarch_dummy_id (gdbarch, score_dummy_id); |
27fd2f50 Q |
1526 | set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call); |
1527 | ||
5e29c264 | 1528 | /* Normal frame hooks. */ |
94afd7a6 | 1529 | dwarf2_append_unwinders (gdbarch); |
27fd2f50 | 1530 | frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); |
94afd7a6 | 1531 | frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind); |
27fd2f50 Q |
1532 | frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer); |
1533 | ||
1534 | return gdbarch; | |
1535 | } | |
1536 | ||
1537 | extern initialize_file_ftype _initialize_score_tdep; | |
1538 | ||
1539 | void | |
1540 | _initialize_score_tdep (void) | |
1541 | { | |
1542 | gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL); | |
1543 | } |