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 | ||
e2882c85 | 4 | Copyright (C) 2006-2018 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" | |
27fd2f50 Q |
25 | #include "inferior.h" |
26 | #include "symtab.h" | |
27 | #include "objfiles.h" | |
28 | #include "gdbcore.h" | |
29 | #include "target.h" | |
30 | #include "arch-utils.h" | |
31 | #include "regcache.h" | |
5f814c3b | 32 | #include "regset.h" |
27fd2f50 Q |
33 | #include "dis-asm.h" |
34 | #include "frame-unwind.h" | |
35 | #include "frame-base.h" | |
36 | #include "trad-frame.h" | |
37 | #include "dwarf2-frame.h" | |
38 | #include "score-tdep.h" | |
39 | ||
5f814c3b DL |
40 | #define G_FLD(_i,_ms,_ls) \ |
41 | ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls))) | |
27fd2f50 Q |
42 | |
43 | typedef struct{ | |
c378eb4e MS |
44 | unsigned long long v; |
45 | unsigned long long raw; | |
46 | unsigned int len; | |
27fd2f50 Q |
47 | }inst_t; |
48 | ||
49 | struct score_frame_cache | |
50 | { | |
51 | CORE_ADDR base; | |
5e29c264 | 52 | CORE_ADDR fp; |
27fd2f50 Q |
53 | struct trad_frame_saved_reg *saved_regs; |
54 | }; | |
55 | ||
5f814c3b | 56 | static int target_mach = bfd_mach_score7; |
5e29c264 | 57 | |
27fd2f50 Q |
58 | static struct type * |
59 | score_register_type (struct gdbarch *gdbarch, int regnum) | |
60 | { | |
5f814c3b | 61 | gdb_assert (regnum >= 0 |
c378eb4e MS |
62 | && regnum < ((target_mach == bfd_mach_score7) |
63 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
df4df182 | 64 | return builtin_type (gdbarch)->builtin_uint32; |
27fd2f50 Q |
65 | } |
66 | ||
5f814c3b DL |
67 | static CORE_ADDR |
68 | score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
69 | { | |
70 | return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM); | |
71 | } | |
72 | ||
27fd2f50 | 73 | static CORE_ADDR |
30244cd8 | 74 | score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
27fd2f50 | 75 | { |
30244cd8 | 76 | return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM); |
27fd2f50 Q |
77 | } |
78 | ||
5f814c3b DL |
79 | static const char * |
80 | score7_register_name (struct gdbarch *gdbarch, int regnum) | |
27fd2f50 | 81 | { |
5f814c3b DL |
82 | const char *score_register_names[] = { |
83 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
84 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
85 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
86 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
87 | ||
88 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", | |
89 | "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR", | |
90 | "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN", | |
91 | "PREV", "DREG", "PC", "DSAVE", "COUNTER", | |
92 | "LDCR", "STCR", "CEH", "CEL", | |
93 | }; | |
94 | ||
95 | gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS); | |
96 | return score_register_names[regnum]; | |
27fd2f50 Q |
97 | } |
98 | ||
99 | static const char * | |
5f814c3b | 100 | score3_register_name (struct gdbarch *gdbarch, int regnum) |
27fd2f50 Q |
101 | { |
102 | const char *score_register_names[] = { | |
103 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
104 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
105 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
106 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
107 | ||
5f814c3b DL |
108 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", |
109 | "EPC", "EMA", "PREV", "DREG", "DSAVE", | |
110 | "COUNTER", "LDCR", "STCR", "CEH", "CEL", | |
111 | "", "", "PC", | |
27fd2f50 Q |
112 | }; |
113 | ||
5f814c3b | 114 | gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS); |
27fd2f50 Q |
115 | return score_register_names[regnum]; |
116 | } | |
117 | ||
5f814c3b | 118 | #if WITH_SIM |
27fd2f50 | 119 | static int |
e7faf938 | 120 | score_register_sim_regno (struct gdbarch *gdbarch, int regnum) |
27fd2f50 | 121 | { |
5f814c3b | 122 | gdb_assert (regnum >= 0 |
c378eb4e MS |
123 | && regnum < ((target_mach == bfd_mach_score7) |
124 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
125 | return regnum; |
126 | } | |
5f814c3b | 127 | #endif |
27fd2f50 | 128 | |
5f814c3b | 129 | static inst_t * |
e362b510 | 130 | score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock) |
5f814c3b DL |
131 | { |
132 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
133 | static inst_t inst = { 0, 0, 0 }; | |
e362b510 | 134 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
5f814c3b DL |
135 | int big; |
136 | int ret; | |
137 | ||
138 | if (target_has_execution && memblock != NULL) | |
139 | { | |
140 | /* Fetch instruction from local MEMBLOCK. */ | |
141 | memcpy (buf, memblock, SCORE_INSTLEN); | |
142 | } | |
143 | else | |
144 | { | |
145 | /* Fetch instruction from target. */ | |
146 | ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN); | |
147 | if (ret) | |
148 | { | |
a73c6dcd | 149 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
150 | __FILE__, __LINE__); |
151 | return 0; | |
152 | } | |
153 | } | |
154 | ||
155 | inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); | |
156 | inst.len = (inst.raw & 0x80008000) ? 4 : 2; | |
157 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
158 | big = (byte_order == BFD_ENDIAN_BIG); | |
159 | if (inst.len == 2) | |
160 | { | |
161 | if (big ^ ((addr & 0x2) == 2)) | |
162 | inst.v = G_FLD (inst.v, 29, 15); | |
163 | else | |
164 | inst.v = G_FLD (inst.v, 14, 0); | |
165 | } | |
166 | return &inst; | |
167 | } | |
168 | ||
169 | static inst_t * | |
170 | score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr, | |
171 | enum bfd_endian byte_order) | |
172 | { | |
173 | static inst_t inst = { 0, 0, 0 }; | |
174 | ||
175 | struct breakplace | |
176 | { | |
177 | int break_offset; | |
178 | int inst_len; | |
179 | }; | |
180 | /* raw table 1 (column 2, 3, 4) | |
181 | * 0 1 0 * # 2 | |
182 | * 0 1 1 0 # 3 | |
183 | 0 1 1 0 * # 6 | |
184 | table 2 (column 1, 2, 3) | |
185 | * 0 0 * * # 0, 4 | |
186 | 0 1 0 * * # 2 | |
187 | 1 1 0 * * # 6 | |
188 | */ | |
189 | ||
190 | static const struct breakplace bk_table[16] = | |
191 | { | |
192 | /* table 1 */ | |
193 | {0, 0}, | |
194 | {0, 0}, | |
195 | {0, 4}, | |
196 | {0, 6}, | |
197 | {0, 0}, | |
198 | {0, 0}, | |
199 | {-2, 6}, | |
200 | {0, 0}, | |
201 | /* table 2 */ | |
202 | {0, 2}, | |
203 | {0, 0}, | |
204 | {-2, 4}, | |
205 | {0, 0}, | |
206 | {0, 2}, | |
207 | {0, 0}, | |
208 | {-4, 6}, | |
209 | {0, 0} | |
210 | }; | |
211 | ||
212 | #define EXTRACT_LEN 2 | |
213 | CORE_ADDR adjust_pc = *pcptr & ~0x1; | |
5f814c3b DL |
214 | gdb_byte buf[5][EXTRACT_LEN] = |
215 | { | |
216 | {'\0', '\0'}, | |
217 | {'\0', '\0'}, | |
218 | {'\0', '\0'}, | |
219 | {'\0', '\0'}, | |
220 | {'\0', '\0'} | |
221 | }; | |
222 | int ret; | |
223 | unsigned int raw; | |
224 | unsigned int cbits = 0; | |
225 | int bk_index; | |
226 | int i, count; | |
227 | ||
228 | inst.v = 0; | |
229 | inst.raw = 0; | |
230 | inst.len = 0; | |
231 | ||
232 | adjust_pc -= 4; | |
233 | for (i = 0; i < 5; i++) | |
234 | { | |
235 | ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN); | |
236 | if (ret != 0) | |
237 | { | |
238 | buf[i][0] = '\0'; | |
239 | buf[i][1] = '\0'; | |
240 | if (i == 2) | |
a73c6dcd | 241 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
5f814c3b DL |
242 | __FILE__, __LINE__); |
243 | } | |
244 | ||
245 | raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
246 | cbits = (cbits << 1) | (raw >> 15); | |
247 | } | |
248 | adjust_pc += 4; | |
249 | ||
250 | if (cbits & 0x4) | |
251 | { | |
252 | /* table 1 */ | |
253 | cbits = (cbits >> 1) & 0x7; | |
254 | bk_index = cbits; | |
255 | } | |
256 | else | |
257 | { | |
258 | /* table 2 */ | |
259 | cbits = (cbits >> 2) & 0x7; | |
260 | bk_index = cbits + 8; | |
261 | } | |
262 | ||
263 | gdb_assert (!((bk_table[bk_index].break_offset == 0) | |
264 | && (bk_table[bk_index].inst_len == 0))); | |
265 | ||
266 | inst.len = bk_table[bk_index].inst_len; | |
267 | ||
268 | i = (bk_table[bk_index].break_offset + 4) / 2; | |
269 | count = inst.len / 2; | |
270 | for (; count > 0; i++, count--) | |
271 | { | |
272 | inst.raw = (inst.raw << 16) | |
273 | | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
274 | } | |
275 | ||
276 | switch (inst.len) | |
277 | { | |
278 | case 2: | |
279 | inst.v = inst.raw & 0x7FFF; | |
280 | break; | |
281 | case 4: | |
282 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
283 | break; | |
284 | case 6: | |
285 | inst.v = ((inst.raw >> 32 & 0x7FFF) << 30) | |
286 | | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
287 | break; | |
288 | } | |
289 | ||
290 | if (pcptr) | |
291 | *pcptr = adjust_pc + bk_table[bk_index].break_offset; | |
292 | if (lenptr) | |
293 | *lenptr = bk_table[bk_index].inst_len; | |
294 | ||
295 | #undef EXTRACT_LEN | |
296 | ||
297 | return &inst; | |
298 | } | |
299 | ||
cd6c3b4f YQ |
300 | /* Implement the breakpoint_kind_from_pc gdbarch method. */ |
301 | ||
d19280ad YQ |
302 | static int |
303 | score7_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) | |
27fd2f50 | 304 | { |
27fd2f50 Q |
305 | int ret; |
306 | unsigned int raw; | |
d19280ad YQ |
307 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
308 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; | |
27fd2f50 Q |
309 | |
310 | if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0) | |
311 | { | |
a73c6dcd | 312 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
d19280ad | 313 | __FILE__, __LINE__); |
27fd2f50 | 314 | } |
e17a4113 | 315 | raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
27fd2f50 | 316 | |
d19280ad | 317 | if (!(raw & 0x80008000)) |
27fd2f50 | 318 | { |
d19280ad YQ |
319 | /* 16bits instruction. */ |
320 | *pcptr &= ~0x1; | |
321 | return 2; | |
322 | } | |
323 | else | |
324 | { | |
325 | /* 32bits instruction. */ | |
326 | *pcptr &= ~0x3; | |
327 | return 4; | |
328 | } | |
329 | } | |
330 | ||
cd6c3b4f YQ |
331 | /* Implement the sw_breakpoint_from_kind gdbarch method. */ |
332 | ||
d19280ad YQ |
333 | static const gdb_byte * |
334 | score7_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size) | |
335 | { | |
336 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
337 | ||
338 | *size = kind; | |
339 | ||
340 | if (kind == 4) | |
341 | { | |
342 | static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 }; | |
343 | static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 }; | |
344 | ||
345 | if (byte_order == BFD_ENDIAN_BIG) | |
346 | return big_breakpoint32; | |
27fd2f50 | 347 | else |
d19280ad | 348 | return little_breakpoint32; |
27fd2f50 Q |
349 | } |
350 | else | |
351 | { | |
d19280ad YQ |
352 | static gdb_byte big_breakpoint16[] = { 0x60, 0x02 }; |
353 | static gdb_byte little_breakpoint16[] = { 0x02, 0x60 }; | |
354 | ||
355 | if (byte_order == BFD_ENDIAN_BIG) | |
356 | return big_breakpoint16; | |
27fd2f50 | 357 | else |
d19280ad | 358 | return little_breakpoint16; |
27fd2f50 Q |
359 | } |
360 | } | |
361 | ||
cd6c3b4f YQ |
362 | /* Implement the breakpoint_kind_from_pc gdbarch method. */ |
363 | ||
d19280ad YQ |
364 | static int |
365 | score3_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) | |
5f814c3b DL |
366 | { |
367 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
5f814c3b | 368 | int len; |
d19280ad YQ |
369 | |
370 | score3_adjust_pc_and_fetch_inst (pcptr, &len, byte_order); | |
371 | ||
372 | return len; | |
373 | } | |
374 | ||
cd6c3b4f YQ |
375 | /* Implement the sw_breakpoint_from_kind gdbarch method. */ |
376 | ||
d19280ad YQ |
377 | static const gdb_byte * |
378 | score3_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size) | |
379 | { | |
380 | int index = 0; | |
381 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
5f814c3b DL |
382 | static gdb_byte score_break_insns[6][6] = { |
383 | /* The following three instructions are big endian. */ | |
384 | { 0x00, 0x20 }, | |
385 | { 0x80, 0x00, 0x00, 0x06 }, | |
386 | { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }, | |
387 | /* The following three instructions are little endian. */ | |
388 | { 0x20, 0x00 }, | |
389 | { 0x00, 0x80, 0x06, 0x00 }, | |
390 | { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }}; | |
391 | ||
d19280ad | 392 | *size = kind; |
5f814c3b | 393 | |
d19280ad YQ |
394 | index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (kind / 2 - 1); |
395 | return score_break_insns[index]; | |
5f814c3b DL |
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 | 554 | int arg_last_part_p = 0; |
27fd2f50 | 555 | |
1cfd2c3e | 556 | arglen = TYPE_LENGTH (arg_type); |
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 | |
c378eb4e MS |
690 | = score3_adjust_pc_and_fetch_inst (&cpc, NULL, |
691 | gdbarch_byte_order (gdbarch)); | |
27fd2f50 | 692 | |
5f814c3b DL |
693 | if (!inst) |
694 | break; | |
695 | if (inst->len == 4 && !stack_sub | |
696 | && (G_FLD (inst->v, 29, 25) == 0x1) | |
697 | && (G_FLD (inst->v, 19, 17) == 0x0) | |
698 | && (G_FLD (inst->v, 24, 20) == 0x0)) | |
699 | { | |
700 | /* addi r0, offset */ | |
701 | stack_sub = cpc + inst->len; | |
702 | pc = cpc + inst->len; | |
703 | } | |
704 | else if (inst->len == 4 | |
705 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
706 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
707 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
708 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
709 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
710 | { | |
711 | /* mv r2, r0 */ | |
712 | pc = cpc + inst->len; | |
713 | break; | |
714 | } | |
715 | else if ((inst->len == 2) | |
716 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
717 | && (G_FLD (inst->v, 9, 5) == 0x2) | |
718 | && (G_FLD (inst->v, 4, 0) == 0x0)) | |
719 | { | |
720 | /* mv! r2, r0 */ | |
721 | pc = cpc + inst->len; | |
722 | break; | |
723 | } | |
724 | else if (inst->len == 2 | |
725 | && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */ | |
726 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
727 | && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */ | |
728 | break; | |
729 | else if (inst->len == 4 | |
730 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ | |
731 | || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */ | |
732 | break; | |
733 | ||
734 | cpc += inst->len; | |
735 | } | |
736 | return pc; | |
737 | } | |
738 | ||
c9cf6e20 MG |
739 | /* Implement the stack_frame_destroyed_p gdbarch method. */ |
740 | ||
5f814c3b | 741 | static int |
c9cf6e20 | 742 | score7_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) |
5f814c3b DL |
743 | { |
744 | inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL); | |
745 | ||
746 | if (inst->v == 0x23) | |
747 | return 1; /* mv! r0, r2 */ | |
748 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
749 | && G_FLD (inst->v, 3, 0) == 0xa) | |
750 | return 1; /* pop! */ | |
27fd2f50 Q |
751 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
752 | && G_FLD (inst->v, 7, 0) == 0x34) | |
753 | return 1; /* br! r3 */ | |
754 | else if (G_FLD (inst->v, 29, 15) == 0x2 | |
755 | && G_FLD (inst->v, 6, 1) == 0x2b) | |
756 | return 1; /* mv r0, r2 */ | |
757 | else if (G_FLD (inst->v, 29, 25) == 0x0 | |
758 | && G_FLD (inst->v, 6, 1) == 0x4 | |
759 | && G_FLD (inst->v, 19, 15) == 0x3) | |
760 | return 1; /* br r3 */ | |
761 | else | |
762 | return 0; | |
763 | } | |
764 | ||
c9cf6e20 MG |
765 | /* Implement the stack_frame_destroyed_p gdbarch method. */ |
766 | ||
5f814c3b | 767 | static int |
c9cf6e20 | 768 | score3_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) |
5f814c3b DL |
769 | { |
770 | CORE_ADDR pc = cur_pc; | |
771 | inst_t *inst | |
c378eb4e MS |
772 | = score3_adjust_pc_and_fetch_inst (&pc, NULL, |
773 | gdbarch_byte_order (gdbarch)); | |
5f814c3b DL |
774 | |
775 | if (inst->len == 2 | |
776 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
777 | && (G_FLD (inst->v, 9, 5) == 0x0) | |
778 | && (G_FLD (inst->v, 4, 0) == 0x2)) | |
779 | return 1; /* mv! r0, r2 */ | |
780 | else if (inst->len == 4 | |
781 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
782 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
783 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
784 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
785 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
786 | return 1; /* mv r0, r2 */ | |
787 | else if (inst->len == 2 | |
788 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
789 | && (G_FLD (inst->v, 11, 5) == 0x2)) | |
790 | return 1; /* pop! */ | |
791 | else if (inst->len == 2 | |
792 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
793 | && (G_FLD (inst->v, 11, 7) == 0x0) | |
794 | && (G_FLD (inst->v, 6, 5) == 0x2)) | |
795 | return 1; /* rpop! */ | |
796 | else if (inst->len == 2 | |
797 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
798 | && (G_FLD (inst->v, 11, 5) == 0x4) | |
799 | && (G_FLD (inst->v, 4, 0) == 0x3)) | |
800 | return 1; /* br! r3 */ | |
801 | else if (inst->len == 4 | |
802 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
803 | && (G_FLD (inst->v, 24, 20) == 0x0) | |
804 | && (G_FLD (inst->v, 19, 15) == 0x3) | |
805 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
806 | && (G_FLD (inst->v, 9, 0) == 0x8)) | |
807 | return 1; /* br r3 */ | |
808 | else | |
809 | return 0; | |
810 | } | |
811 | ||
e362b510 | 812 | static gdb_byte * |
5f814c3b DL |
813 | score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size) |
814 | { | |
815 | int ret; | |
e362b510 | 816 | gdb_byte *memblock = NULL; |
5f814c3b | 817 | |
d66ff635 | 818 | if (size == 0) |
5f814c3b DL |
819 | return NULL; |
820 | ||
224c3ddb | 821 | memblock = (gdb_byte *) xmalloc (size); |
5f814c3b DL |
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 |
948f8e3d | 834 | score7_free_memblock (gdb_byte *memblock) |
5f814c3b DL |
835 | { |
836 | xfree (memblock); | |
837 | } | |
838 | ||
839 | static void | |
e362b510 | 840 | score7_adjust_memblock_ptr (gdb_byte **memblock, CORE_ADDR prev_pc, |
5f814c3b DL |
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 | ||
e362b510 PA |
876 | gdb_byte *memblock = NULL; |
877 | gdb_byte *memblock_ptr = NULL; | |
5e29c264 Q |
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 | ||
c378eb4e | 904 | /* FIXME: make a full-power prologue analyzer. */ |
5f814c3b | 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; | |
c378eb4e MS |
1074 | enum bfd_endian byte_order |
1075 | = gdbarch_byte_order (get_frame_arch (this_frame)); | |
5f814c3b DL |
1076 | |
1077 | int sp_offset = 0; | |
1078 | int ra_offset = 0; | |
1079 | int fp_offset = 0; | |
1080 | int ra_offset_p = 0; | |
1081 | int fp_offset_p = 0; | |
1082 | int inst_len = 0; | |
1083 | ||
5f814c3b DL |
1084 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
1085 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
1086 | ||
870f88f7 | 1087 | for (; cur_pc < pc; cur_pc += inst_len) |
5f814c3b DL |
1088 | { |
1089 | inst_t *inst = NULL; | |
1090 | ||
1091 | inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order); | |
1092 | ||
c378eb4e | 1093 | /* FIXME: make a full-power prologue analyzer. */ |
5f814c3b DL |
1094 | if (inst->len == 2) |
1095 | { | |
1096 | if (G_FLD (inst->v, 14, 12) == 0x0 | |
1097 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1098 | && G_FLD (inst->v, 6, 5) == 0x3) | |
1099 | { | |
1100 | /* push! */ | |
1101 | sp_offset += 4; | |
1102 | ||
1103 | if (G_FLD (inst->v, 4, 0) == 0x3 | |
1104 | && ra_offset_p == 0) | |
1105 | { | |
1106 | /* push! r3, [r0] */ | |
1107 | ra_offset = sp_offset; | |
1108 | ra_offset_p = 1; | |
1109 | } | |
1110 | else if (G_FLD (inst->v, 4, 0) == 0x2 | |
1111 | && fp_offset_p == 0) | |
1112 | { | |
1113 | /* push! r2, [r0] */ | |
1114 | fp_offset = sp_offset; | |
1115 | fp_offset_p = 1; | |
1116 | } | |
1117 | } | |
1118 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1119 | && G_FLD (inst->v, 11, 10) == 0x3) | |
1120 | { | |
1121 | /* rpush! */ | |
1122 | int start_r = G_FLD (inst->v, 9, 5); | |
1123 | int cnt = G_FLD (inst->v, 4, 0); | |
1124 | ||
1125 | if ((ra_offset_p == 0) | |
1126 | && (start_r <= SCORE_RA_REGNUM) | |
1127 | && (SCORE_RA_REGNUM < start_r + cnt)) | |
1128 | { | |
1129 | /* rpush! contains r3 */ | |
1130 | ra_offset_p = 1; | |
1131 | ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4; | |
1132 | } | |
1133 | ||
1134 | if ((fp_offset_p == 0) | |
1135 | && (start_r <= SCORE_FP_REGNUM) | |
1136 | && (SCORE_FP_REGNUM < start_r + cnt)) | |
1137 | { | |
1138 | /* rpush! contains r2 */ | |
1139 | fp_offset_p = 1; | |
1140 | fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4; | |
1141 | } | |
1142 | ||
1143 | sp_offset += 4 * cnt; | |
1144 | } | |
1145 | else if (G_FLD (inst->v, 14, 12) == 0x0 | |
1146 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1147 | && G_FLD (inst->v, 6, 5) == 0x2) | |
1148 | { | |
1149 | /* pop! */ | |
1150 | sp_offset -= 4; | |
1151 | } | |
1152 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1153 | && G_FLD (inst->v, 11, 10) == 0x2) | |
1154 | { | |
1155 | /* rpop! */ | |
1156 | sp_offset -= 4 * G_FLD (inst->v, 4, 0); | |
1157 | } | |
1158 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1159 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1160 | && G_FLD (inst->v, 9, 6) == 0x0) | |
1161 | { | |
1162 | /* addi! r0, -offset */ | |
1163 | int imm = G_FLD (inst->v, 5, 0); | |
1164 | if (imm >> 5) | |
1165 | imm = -(0x3F - imm + 1); | |
1166 | sp_offset -= imm; | |
1167 | } | |
1168 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1169 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1170 | && G_FLD (inst->v, 9, 6) == 0x2) | |
1171 | { | |
1172 | /* addi! r2, offset */ | |
1173 | if (pc - cur_pc >= 2) | |
1174 | { | |
5f814c3b DL |
1175 | inst_t *inst2; |
1176 | ||
1177 | cur_pc += inst->len; | |
c378eb4e MS |
1178 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
1179 | byte_order); | |
5f814c3b DL |
1180 | |
1181 | if (inst2->len == 2 | |
1182 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1183 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1184 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1185 | { | |
1186 | /* mv! r0, r2 */ | |
1187 | int imm = G_FLD (inst->v, 5, 0); | |
1188 | if (imm >> 5) | |
1189 | imm = -(0x3F - imm + 1); | |
1190 | sp_offset -= imm; | |
1191 | } | |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | else if (inst->len == 4) | |
1196 | { | |
1197 | if (G_FLD (inst->v, 29, 25) == 0x3 | |
1198 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1199 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1200 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1201 | { | |
1202 | /* sw r3, [r0, offset]+ */ | |
1203 | sp_offset += inst->len; | |
1204 | if (ra_offset_p == 0) | |
1205 | { | |
1206 | ra_offset = sp_offset; | |
1207 | ra_offset_p = 1; | |
1208 | } | |
1209 | } | |
1210 | else if (G_FLD (inst->v, 29, 25) == 0x3 | |
1211 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1212 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1213 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1214 | { | |
1215 | /* sw r2, [r0, offset]+ */ | |
1216 | sp_offset += inst->len; | |
1217 | if (fp_offset_p == 0) | |
1218 | { | |
1219 | fp_offset = sp_offset; | |
1220 | fp_offset_p = 1; | |
1221 | } | |
1222 | } | |
1223 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1224 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1225 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1226 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1227 | { | |
1228 | /* lw r3, [r0]+, 4 */ | |
1229 | sp_offset -= inst->len; | |
1230 | ra_offset_p = 1; | |
1231 | } | |
1232 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1233 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1234 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1235 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1236 | { | |
1237 | /* lw r2, [r0]+, 4 */ | |
1238 | sp_offset -= inst->len; | |
1239 | fp_offset_p = 1; | |
1240 | } | |
1241 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1242 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1243 | && G_FLD (inst->v, 24, 20) == 0x0 | |
1244 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1245 | { | |
1246 | /* addi r0, -offset */ | |
1247 | int imm = G_FLD (inst->v, 16, 1); | |
1248 | if (imm >> 15) | |
1249 | imm = -(0xFFFF - imm + 1); | |
1250 | sp_offset -= imm; | |
1251 | } | |
1252 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1253 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1254 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1255 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1256 | { | |
1257 | /* addi r2, offset */ | |
1258 | if (pc - cur_pc >= 2) | |
1259 | { | |
5f814c3b DL |
1260 | inst_t *inst2; |
1261 | ||
1262 | cur_pc += inst->len; | |
c378eb4e MS |
1263 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
1264 | byte_order); | |
5f814c3b DL |
1265 | |
1266 | if (inst2->len == 2 | |
1267 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1268 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1269 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1270 | { | |
1271 | /* mv! r0, r2 */ | |
1272 | int imm = G_FLD (inst->v, 16, 1); | |
1273 | if (imm >> 15) | |
1274 | imm = -(0xFFFF - imm + 1); | |
1275 | sp_offset -= imm; | |
1276 | } | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* Save RA. */ | |
1283 | if (ra_offset_p == 1) | |
1284 | { | |
1285 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1286 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1287 | sp + sp_offset - ra_offset; | |
1288 | } | |
1289 | else | |
1290 | { | |
1291 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1292 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1293 | } | |
1294 | ||
1295 | /* Save FP. */ | |
1296 | if (fp_offset_p == 1) | |
1297 | { | |
1298 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1299 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1300 | sp + sp_offset - fp_offset; | |
1301 | } | |
1302 | ||
1303 | /* Save SP and FP. */ | |
1304 | this_cache->base = sp + sp_offset; | |
1305 | this_cache->fp = fp; | |
27fd2f50 Q |
1306 | } |
1307 | ||
1308 | static struct score_frame_cache * | |
94afd7a6 | 1309 | score_make_prologue_cache (struct frame_info *this_frame, void **this_cache) |
27fd2f50 Q |
1310 | { |
1311 | struct score_frame_cache *cache; | |
1312 | ||
1313 | if ((*this_cache) != NULL) | |
19ba03f4 | 1314 | return (struct score_frame_cache *) (*this_cache); |
27fd2f50 Q |
1315 | |
1316 | cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache); | |
1317 | (*this_cache) = cache; | |
94afd7a6 | 1318 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
27fd2f50 Q |
1319 | |
1320 | /* Analyze the prologue. */ | |
1321 | { | |
94afd7a6 | 1322 | const CORE_ADDR pc = get_frame_pc (this_frame); |
27fd2f50 Q |
1323 | CORE_ADDR start_addr; |
1324 | ||
1325 | find_pc_partial_function (pc, NULL, &start_addr, NULL); | |
1326 | if (start_addr == 0) | |
1327 | return cache; | |
5f814c3b DL |
1328 | |
1329 | if (target_mach == bfd_mach_score3) | |
19ba03f4 SM |
1330 | score3_analyze_prologue (start_addr, pc, this_frame, |
1331 | (struct score_frame_cache *) *this_cache); | |
5f814c3b | 1332 | else |
19ba03f4 SM |
1333 | score7_analyze_prologue (start_addr, pc, this_frame, |
1334 | (struct score_frame_cache *) *this_cache); | |
27fd2f50 Q |
1335 | } |
1336 | ||
1337 | /* Save SP. */ | |
1338 | trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base); | |
1339 | ||
19ba03f4 | 1340 | return (struct score_frame_cache *) (*this_cache); |
27fd2f50 Q |
1341 | } |
1342 | ||
1343 | static void | |
94afd7a6 | 1344 | score_prologue_this_id (struct frame_info *this_frame, void **this_cache, |
27fd2f50 Q |
1345 | struct frame_id *this_id) |
1346 | { | |
94afd7a6 | 1347 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1348 | this_cache); |
94afd7a6 | 1349 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
27fd2f50 Q |
1350 | } |
1351 | ||
94afd7a6 UW |
1352 | static struct value * |
1353 | score_prologue_prev_register (struct frame_info *this_frame, | |
1354 | void **this_cache, int regnum) | |
27fd2f50 | 1355 | { |
94afd7a6 | 1356 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1357 | this_cache); |
94afd7a6 | 1358 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
27fd2f50 Q |
1359 | } |
1360 | ||
1361 | static const struct frame_unwind score_prologue_unwind = | |
1362 | { | |
1363 | NORMAL_FRAME, | |
8fbca658 | 1364 | default_frame_unwind_stop_reason, |
27fd2f50 | 1365 | score_prologue_this_id, |
94afd7a6 UW |
1366 | score_prologue_prev_register, |
1367 | NULL, | |
5f814c3b DL |
1368 | default_frame_sniffer, |
1369 | NULL | |
27fd2f50 Q |
1370 | }; |
1371 | ||
27fd2f50 | 1372 | static CORE_ADDR |
94afd7a6 | 1373 | score_prologue_frame_base_address (struct frame_info *this_frame, |
27fd2f50 Q |
1374 | void **this_cache) |
1375 | { | |
1376 | struct score_frame_cache *info = | |
94afd7a6 | 1377 | score_make_prologue_cache (this_frame, this_cache); |
5e29c264 | 1378 | return info->fp; |
27fd2f50 Q |
1379 | } |
1380 | ||
1381 | static const struct frame_base score_prologue_frame_base = | |
1382 | { | |
1383 | &score_prologue_unwind, | |
1384 | score_prologue_frame_base_address, | |
1385 | score_prologue_frame_base_address, | |
1386 | score_prologue_frame_base_address, | |
1387 | }; | |
1388 | ||
1389 | static const struct frame_base * | |
94afd7a6 | 1390 | score_prologue_frame_base_sniffer (struct frame_info *this_frame) |
27fd2f50 Q |
1391 | { |
1392 | return &score_prologue_frame_base; | |
1393 | } | |
1394 | ||
c5741217 AA |
1395 | /* Core file support. */ |
1396 | ||
1397 | static const struct regcache_map_entry score7_linux_gregmap[] = | |
1398 | { | |
1399 | /* FIXME: According to the current Linux kernel, r0 is preceded by | |
1400 | 9 rather than 7 words. */ | |
1401 | { 7, REGCACHE_MAP_SKIP, 4 }, | |
1402 | { 32, 0, 4 }, /* r0 ... r31 */ | |
1403 | { 1, 55, 4 }, /* CEL */ | |
1404 | { 1, 54, 4 }, /* CEH */ | |
1405 | { 1, 53, 4 }, /* sr0, i.e. cnt or COUNTER */ | |
1406 | { 1, 52, 4 }, /* sr1, i.e. lcr or LDCR */ | |
1407 | { 1, 51, 4 }, /* sr2, i.e. scr or STCR */ | |
1408 | { 1, 49, 4 }, /* PC (same slot as EPC) */ | |
1409 | { 1, 38, 4 }, /* EMA */ | |
1410 | { 1, 32, 4 }, /* PSR */ | |
1411 | { 1, 34, 4 }, /* ECR */ | |
1412 | { 1, 33, 4 }, /* COND */ | |
1413 | { 0 } | |
1414 | }; | |
1415 | ||
1416 | #define SCORE7_LINUX_EPC_OFFSET (44 * 4) | |
1417 | #define SCORE7_LINUX_SIZEOF_GREGSET (49 * 4) | |
5f814c3b DL |
1418 | |
1419 | static void | |
1420 | score7_linux_supply_gregset(const struct regset *regset, | |
c5741217 AA |
1421 | struct regcache *regcache, |
1422 | int regnum, const void *buf, | |
1423 | size_t size) | |
5f814c3b | 1424 | { |
c5741217 AA |
1425 | regcache_supply_regset (regset, regcache, regnum, buf, size); |
1426 | ||
1427 | /* Supply the EPC from the same slot as the PC. Note that the | |
1428 | collect function will store the PC in that slot. */ | |
1429 | if ((regnum == -1 || regnum == SCORE_EPC_REGNUM) | |
1430 | && size >= SCORE7_LINUX_EPC_OFFSET + 4) | |
1431 | regcache_raw_supply (regcache, SCORE_EPC_REGNUM, | |
1432 | (const gdb_byte *) buf | |
1433 | + SCORE7_LINUX_EPC_OFFSET); | |
5f814c3b DL |
1434 | } |
1435 | ||
8fea3224 AA |
1436 | static const struct regset score7_linux_gregset = |
1437 | { | |
c5741217 AA |
1438 | score7_linux_gregmap, |
1439 | score7_linux_supply_gregset, | |
1440 | regcache_collect_regset | |
8fea3224 AA |
1441 | }; |
1442 | ||
9845a0b5 | 1443 | /* Iterate over core file register note sections. */ |
5f814c3b | 1444 | |
9845a0b5 AA |
1445 | static void |
1446 | score7_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, | |
1447 | iterate_over_regset_sections_cb *cb, | |
1448 | void *cb_data, | |
1449 | const struct regcache *regcache) | |
5f814c3b | 1450 | { |
9845a0b5 AA |
1451 | cb (".reg", SCORE7_LINUX_SIZEOF_GREGSET, &score7_linux_gregset, |
1452 | NULL, cb_data); | |
5f814c3b DL |
1453 | } |
1454 | ||
27fd2f50 Q |
1455 | static struct gdbarch * |
1456 | score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
1457 | { | |
1458 | struct gdbarch *gdbarch; | |
5f814c3b | 1459 | target_mach = info.bfd_arch_info->mach; |
27fd2f50 Q |
1460 | |
1461 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1462 | if (arches != NULL) | |
1463 | { | |
1464 | return (arches->gdbarch); | |
1465 | } | |
8fea3224 | 1466 | gdbarch = gdbarch_alloc (&info, NULL); |
27fd2f50 Q |
1467 | |
1468 | set_gdbarch_short_bit (gdbarch, 16); | |
1469 | set_gdbarch_int_bit (gdbarch, 32); | |
1470 | set_gdbarch_float_bit (gdbarch, 32); | |
1471 | set_gdbarch_double_bit (gdbarch, 64); | |
1472 | set_gdbarch_long_double_bit (gdbarch, 64); | |
5f814c3b | 1473 | #if WITH_SIM |
27fd2f50 | 1474 | set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno); |
5f814c3b | 1475 | #endif |
27fd2f50 Q |
1476 | set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM); |
1477 | set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM); | |
c378eb4e MS |
1478 | set_gdbarch_adjust_breakpoint_address (gdbarch, |
1479 | score_adjust_breakpoint_address); | |
27fd2f50 Q |
1480 | set_gdbarch_register_type (gdbarch, score_register_type); |
1481 | set_gdbarch_frame_align (gdbarch, score_frame_align); | |
1482 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
30244cd8 | 1483 | set_gdbarch_unwind_sp (gdbarch, score_unwind_sp); |
5f814c3b | 1484 | set_gdbarch_unwind_pc (gdbarch, score_unwind_pc); |
5f814c3b DL |
1485 | |
1486 | switch (target_mach) | |
1487 | { | |
1488 | case bfd_mach_score7: | |
04180708 YQ |
1489 | set_gdbarch_breakpoint_kind_from_pc (gdbarch, |
1490 | score7_breakpoint_kind_from_pc); | |
1491 | set_gdbarch_sw_breakpoint_from_kind (gdbarch, | |
1492 | score7_sw_breakpoint_from_kind); | |
5f814c3b | 1493 | set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue); |
c9cf6e20 MG |
1494 | set_gdbarch_stack_frame_destroyed_p (gdbarch, |
1495 | score7_stack_frame_destroyed_p); | |
5f814c3b DL |
1496 | set_gdbarch_register_name (gdbarch, score7_register_name); |
1497 | set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS); | |
c378eb4e | 1498 | /* Core file support. */ |
9845a0b5 AA |
1499 | set_gdbarch_iterate_over_regset_sections |
1500 | (gdbarch, score7_linux_iterate_over_regset_sections); | |
5f814c3b DL |
1501 | break; |
1502 | ||
1503 | case bfd_mach_score3: | |
04180708 YQ |
1504 | set_gdbarch_breakpoint_kind_from_pc (gdbarch, |
1505 | score3_breakpoint_kind_from_pc); | |
1506 | set_gdbarch_sw_breakpoint_from_kind (gdbarch, | |
1507 | score3_sw_breakpoint_from_kind); | |
5f814c3b | 1508 | set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue); |
c9cf6e20 MG |
1509 | set_gdbarch_stack_frame_destroyed_p (gdbarch, |
1510 | score3_stack_frame_destroyed_p); | |
5f814c3b DL |
1511 | set_gdbarch_register_name (gdbarch, score3_register_name); |
1512 | set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS); | |
1513 | break; | |
1514 | } | |
5e29c264 Q |
1515 | |
1516 | /* Watchpoint hooks. */ | |
1517 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); | |
1518 | ||
1519 | /* Dummy frame hooks. */ | |
27fd2f50 | 1520 | set_gdbarch_return_value (gdbarch, score_return_value); |
5e29c264 | 1521 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
94afd7a6 | 1522 | set_gdbarch_dummy_id (gdbarch, score_dummy_id); |
27fd2f50 Q |
1523 | set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call); |
1524 | ||
5e29c264 | 1525 | /* Normal frame hooks. */ |
94afd7a6 | 1526 | dwarf2_append_unwinders (gdbarch); |
27fd2f50 | 1527 | frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); |
94afd7a6 | 1528 | frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind); |
27fd2f50 Q |
1529 | frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer); |
1530 | ||
1531 | return gdbarch; | |
1532 | } | |
1533 | ||
27fd2f50 Q |
1534 | void |
1535 | _initialize_score_tdep (void) | |
1536 | { | |
1537 | gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL); | |
1538 | } |