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 | ||
0fb0cc75 | 4 | Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
27fd2f50 Q |
5 | |
6 | Contributed by Qinwei (qinwei@sunnorth.com.cn) | |
7 | Contributed by Ching-Peng Lin (cplin@sunplus.com) | |
8 | ||
9 | This file is part of GDB. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
27fd2f50 Q |
14 | (at your option) any later version. |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
27fd2f50 Q |
23 | |
24 | #include "defs.h" | |
25 | #include "gdb_assert.h" | |
26 | #include "inferior.h" | |
27 | #include "symtab.h" | |
28 | #include "objfiles.h" | |
29 | #include "gdbcore.h" | |
30 | #include "target.h" | |
31 | #include "arch-utils.h" | |
32 | #include "regcache.h" | |
5f814c3b | 33 | #include "regset.h" |
27fd2f50 Q |
34 | #include "dis-asm.h" |
35 | #include "frame-unwind.h" | |
36 | #include "frame-base.h" | |
37 | #include "trad-frame.h" | |
38 | #include "dwarf2-frame.h" | |
39 | #include "score-tdep.h" | |
40 | ||
5f814c3b DL |
41 | #define G_FLD(_i,_ms,_ls) \ |
42 | ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls))) | |
27fd2f50 Q |
43 | |
44 | typedef struct{ | |
5f814c3b DL |
45 | unsigned long long v; |
46 | unsigned long long raw; | |
47 | unsigned int len; | |
27fd2f50 Q |
48 | }inst_t; |
49 | ||
50 | struct score_frame_cache | |
51 | { | |
52 | CORE_ADDR base; | |
5e29c264 | 53 | CORE_ADDR fp; |
27fd2f50 Q |
54 | struct trad_frame_saved_reg *saved_regs; |
55 | }; | |
56 | ||
5f814c3b | 57 | static int target_mach = bfd_mach_score7; |
5e29c264 | 58 | |
5b6912fb | 59 | #if 0 |
5e29c264 Q |
60 | int |
61 | score_target_can_use_watch (int type, int cnt, int othertype) | |
62 | { | |
63 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 64 | return soc_gh_can_use_watch (type, cnt); |
5f814c3b | 65 | return (*current_target.to_can_use_hw_breakpoint) (type, cnt, othertype); |
5e29c264 Q |
66 | } |
67 | ||
68 | int | |
69 | score_stopped_by_watch (void) | |
70 | { | |
71 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 72 | return soc_gh_stopped_by_watch (); |
5f814c3b | 73 | return (*current_target.to_stopped_by_watchpoint) (); |
5e29c264 Q |
74 | } |
75 | ||
76 | int | |
77 | score_target_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
78 | { | |
79 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 80 | return soc_gh_add_watch (addr, len, type); |
5f814c3b | 81 | return (*current_target.to_insert_watchpoint) (addr, len, type); |
5e29c264 Q |
82 | } |
83 | ||
84 | int | |
85 | score_target_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
86 | { | |
87 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 88 | return soc_gh_del_watch (addr, len, type); |
5f814c3b | 89 | return (*current_target.to_remove_watchpoint) (addr, len, type); |
5e29c264 Q |
90 | } |
91 | ||
92 | int | |
5f814c3b DL |
93 | score_target_insert_hw_breakpoint (struct gdbarch *gdbarch, |
94 | struct bp_target_info * bp_tgt) | |
5e29c264 Q |
95 | { |
96 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 97 | return soc_gh_add_hardbp (bp_tgt->placed_address); |
5f814c3b | 98 | return (*current_target.to_insert_hw_breakpoint) (gdbarch, bp_tgt); |
5e29c264 Q |
99 | } |
100 | ||
101 | int | |
5f814c3b DL |
102 | score_target_remove_hw_breakpoint (struct gdbarch *gdbarch, |
103 | struct bp_target_info * bp_tgt) | |
5e29c264 Q |
104 | { |
105 | if (strcmp (current_target.to_shortname, "sim") == 0) | |
5e29c264 | 106 | return soc_gh_del_hardbp (bp_tgt->placed_address); |
5f814c3b | 107 | return (*current_target.to_remove_hw_breakpoint) (gdbarch, bp_tgt); |
5e29c264 Q |
108 | } |
109 | #endif | |
110 | ||
27fd2f50 Q |
111 | static struct type * |
112 | score_register_type (struct gdbarch *gdbarch, int regnum) | |
113 | { | |
5f814c3b DL |
114 | gdb_assert (regnum >= 0 |
115 | && regnum < ((target_mach == bfd_mach_score7) ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
df4df182 | 116 | return builtin_type (gdbarch)->builtin_uint32; |
27fd2f50 Q |
117 | } |
118 | ||
5f814c3b DL |
119 | static CORE_ADDR |
120 | score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
121 | { | |
122 | return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM); | |
123 | } | |
124 | ||
27fd2f50 | 125 | static CORE_ADDR |
30244cd8 | 126 | score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
27fd2f50 | 127 | { |
30244cd8 | 128 | return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM); |
27fd2f50 Q |
129 | } |
130 | ||
5f814c3b DL |
131 | static const char * |
132 | score7_register_name (struct gdbarch *gdbarch, int regnum) | |
27fd2f50 | 133 | { |
5f814c3b DL |
134 | const char *score_register_names[] = { |
135 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
136 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
137 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
138 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
139 | ||
140 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", | |
141 | "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR", | |
142 | "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN", | |
143 | "PREV", "DREG", "PC", "DSAVE", "COUNTER", | |
144 | "LDCR", "STCR", "CEH", "CEL", | |
145 | }; | |
146 | ||
147 | gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS); | |
148 | return score_register_names[regnum]; | |
27fd2f50 Q |
149 | } |
150 | ||
151 | static const char * | |
5f814c3b | 152 | score3_register_name (struct gdbarch *gdbarch, int regnum) |
27fd2f50 Q |
153 | { |
154 | const char *score_register_names[] = { | |
155 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
156 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
157 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
158 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
159 | ||
5f814c3b DL |
160 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", |
161 | "EPC", "EMA", "PREV", "DREG", "DSAVE", | |
162 | "COUNTER", "LDCR", "STCR", "CEH", "CEL", | |
163 | "", "", "PC", | |
27fd2f50 Q |
164 | }; |
165 | ||
5f814c3b | 166 | gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS); |
27fd2f50 Q |
167 | return score_register_names[regnum]; |
168 | } | |
169 | ||
5f814c3b | 170 | #if WITH_SIM |
27fd2f50 | 171 | static int |
e7faf938 | 172 | score_register_sim_regno (struct gdbarch *gdbarch, int regnum) |
27fd2f50 | 173 | { |
5f814c3b DL |
174 | gdb_assert (regnum >= 0 |
175 | && regnum < ((target_mach == bfd_mach_score7) ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
176 | return regnum; |
177 | } | |
5f814c3b | 178 | #endif |
27fd2f50 Q |
179 | |
180 | static int | |
181 | score_print_insn (bfd_vma memaddr, struct disassemble_info *info) | |
182 | { | |
f52cb1b8 | 183 | if (info->endian == BFD_ENDIAN_BIG) |
27fd2f50 Q |
184 | return print_insn_big_score (memaddr, info); |
185 | else | |
186 | return print_insn_little_score (memaddr, info); | |
187 | } | |
188 | ||
5f814c3b DL |
189 | static inst_t * |
190 | score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, char *memblock) | |
191 | { | |
192 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
193 | static inst_t inst = { 0, 0, 0 }; | |
194 | char buf[SCORE_INSTLEN] = { 0 }; | |
195 | int big; | |
196 | int ret; | |
197 | ||
198 | if (target_has_execution && memblock != NULL) | |
199 | { | |
200 | /* Fetch instruction from local MEMBLOCK. */ | |
201 | memcpy (buf, memblock, SCORE_INSTLEN); | |
202 | } | |
203 | else | |
204 | { | |
205 | /* Fetch instruction from target. */ | |
206 | ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN); | |
207 | if (ret) | |
208 | { | |
209 | error ("Error: target_read_memory in file:%s, line:%d!", | |
210 | __FILE__, __LINE__); | |
211 | return 0; | |
212 | } | |
213 | } | |
214 | ||
215 | inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); | |
216 | inst.len = (inst.raw & 0x80008000) ? 4 : 2; | |
217 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
218 | big = (byte_order == BFD_ENDIAN_BIG); | |
219 | if (inst.len == 2) | |
220 | { | |
221 | if (big ^ ((addr & 0x2) == 2)) | |
222 | inst.v = G_FLD (inst.v, 29, 15); | |
223 | else | |
224 | inst.v = G_FLD (inst.v, 14, 0); | |
225 | } | |
226 | return &inst; | |
227 | } | |
228 | ||
229 | static inst_t * | |
230 | score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr, | |
231 | enum bfd_endian byte_order) | |
232 | { | |
233 | static inst_t inst = { 0, 0, 0 }; | |
234 | ||
235 | struct breakplace | |
236 | { | |
237 | int break_offset; | |
238 | int inst_len; | |
239 | }; | |
240 | /* raw table 1 (column 2, 3, 4) | |
241 | * 0 1 0 * # 2 | |
242 | * 0 1 1 0 # 3 | |
243 | 0 1 1 0 * # 6 | |
244 | table 2 (column 1, 2, 3) | |
245 | * 0 0 * * # 0, 4 | |
246 | 0 1 0 * * # 2 | |
247 | 1 1 0 * * # 6 | |
248 | */ | |
249 | ||
250 | static const struct breakplace bk_table[16] = | |
251 | { | |
252 | /* table 1 */ | |
253 | {0, 0}, | |
254 | {0, 0}, | |
255 | {0, 4}, | |
256 | {0, 6}, | |
257 | {0, 0}, | |
258 | {0, 0}, | |
259 | {-2, 6}, | |
260 | {0, 0}, | |
261 | /* table 2 */ | |
262 | {0, 2}, | |
263 | {0, 0}, | |
264 | {-2, 4}, | |
265 | {0, 0}, | |
266 | {0, 2}, | |
267 | {0, 0}, | |
268 | {-4, 6}, | |
269 | {0, 0} | |
270 | }; | |
271 | ||
272 | #define EXTRACT_LEN 2 | |
273 | CORE_ADDR adjust_pc = *pcptr & ~0x1; | |
274 | int inst_len; | |
275 | gdb_byte buf[5][EXTRACT_LEN] = | |
276 | { | |
277 | {'\0', '\0'}, | |
278 | {'\0', '\0'}, | |
279 | {'\0', '\0'}, | |
280 | {'\0', '\0'}, | |
281 | {'\0', '\0'} | |
282 | }; | |
283 | int ret; | |
284 | unsigned int raw; | |
285 | unsigned int cbits = 0; | |
286 | int bk_index; | |
287 | int i, count; | |
288 | ||
289 | inst.v = 0; | |
290 | inst.raw = 0; | |
291 | inst.len = 0; | |
292 | ||
293 | adjust_pc -= 4; | |
294 | for (i = 0; i < 5; i++) | |
295 | { | |
296 | ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN); | |
297 | if (ret != 0) | |
298 | { | |
299 | buf[i][0] = '\0'; | |
300 | buf[i][1] = '\0'; | |
301 | if (i == 2) | |
302 | error ("Error: target_read_memory in file:%s, line:%d!", | |
303 | __FILE__, __LINE__); | |
304 | } | |
305 | ||
306 | raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
307 | cbits = (cbits << 1) | (raw >> 15); | |
308 | } | |
309 | adjust_pc += 4; | |
310 | ||
311 | if (cbits & 0x4) | |
312 | { | |
313 | /* table 1 */ | |
314 | cbits = (cbits >> 1) & 0x7; | |
315 | bk_index = cbits; | |
316 | } | |
317 | else | |
318 | { | |
319 | /* table 2 */ | |
320 | cbits = (cbits >> 2) & 0x7; | |
321 | bk_index = cbits + 8; | |
322 | } | |
323 | ||
324 | gdb_assert (!((bk_table[bk_index].break_offset == 0) | |
325 | && (bk_table[bk_index].inst_len == 0))); | |
326 | ||
327 | inst.len = bk_table[bk_index].inst_len; | |
328 | ||
329 | i = (bk_table[bk_index].break_offset + 4) / 2; | |
330 | count = inst.len / 2; | |
331 | for (; count > 0; i++, count--) | |
332 | { | |
333 | inst.raw = (inst.raw << 16) | |
334 | | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); | |
335 | } | |
336 | ||
337 | switch (inst.len) | |
338 | { | |
339 | case 2: | |
340 | inst.v = inst.raw & 0x7FFF; | |
341 | break; | |
342 | case 4: | |
343 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
344 | break; | |
345 | case 6: | |
346 | inst.v = ((inst.raw >> 32 & 0x7FFF) << 30) | |
347 | | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); | |
348 | break; | |
349 | } | |
350 | ||
351 | if (pcptr) | |
352 | *pcptr = adjust_pc + bk_table[bk_index].break_offset; | |
353 | if (lenptr) | |
354 | *lenptr = bk_table[bk_index].inst_len; | |
355 | ||
356 | #undef EXTRACT_LEN | |
357 | ||
358 | return &inst; | |
359 | } | |
360 | ||
27fd2f50 | 361 | static const gdb_byte * |
5f814c3b DL |
362 | score7_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, |
363 | int *lenptr) | |
27fd2f50 | 364 | { |
e17a4113 | 365 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
366 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
367 | int ret; | |
368 | unsigned int raw; | |
369 | ||
370 | if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0) | |
371 | { | |
5e29c264 Q |
372 | error ("Error: target_read_memory in file:%s, line:%d!", |
373 | __FILE__, __LINE__); | |
27fd2f50 | 374 | } |
e17a4113 | 375 | raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
27fd2f50 | 376 | |
e17a4113 | 377 | if (byte_order == BFD_ENDIAN_BIG) |
27fd2f50 Q |
378 | { |
379 | if (!(raw & 0x80008000)) | |
380 | { | |
381 | /* 16bits instruction. */ | |
382 | static gdb_byte big_breakpoint16[] = { 0x60, 0x02 }; | |
383 | *pcptr &= ~0x1; | |
384 | *lenptr = sizeof (big_breakpoint16); | |
385 | return big_breakpoint16; | |
386 | } | |
387 | else | |
388 | { | |
389 | /* 32bits instruction. */ | |
390 | static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 }; | |
391 | *pcptr &= ~0x3; | |
392 | *lenptr = sizeof (big_breakpoint32); | |
393 | return big_breakpoint32; | |
394 | } | |
395 | } | |
396 | else | |
397 | { | |
398 | if (!(raw & 0x80008000)) | |
399 | { | |
400 | /* 16bits instruction. */ | |
401 | static gdb_byte little_breakpoint16[] = { 0x02, 0x60 }; | |
402 | *pcptr &= ~0x1; | |
403 | *lenptr = sizeof (little_breakpoint16); | |
404 | return little_breakpoint16; | |
405 | } | |
406 | else | |
407 | { | |
408 | /* 32bits instruction. */ | |
409 | static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 }; | |
410 | *pcptr &= ~0x3; | |
411 | *lenptr = sizeof (little_breakpoint32); | |
412 | return little_breakpoint32; | |
413 | } | |
414 | } | |
415 | } | |
416 | ||
5f814c3b DL |
417 | static const gdb_byte * |
418 | score3_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, | |
419 | int *lenptr) | |
420 | { | |
421 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
422 | CORE_ADDR adjust_pc = *pcptr; | |
423 | int len; | |
424 | static gdb_byte score_break_insns[6][6] = { | |
425 | /* The following three instructions are big endian. */ | |
426 | { 0x00, 0x20 }, | |
427 | { 0x80, 0x00, 0x00, 0x06 }, | |
428 | { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }, | |
429 | /* The following three instructions are little endian. */ | |
430 | { 0x20, 0x00 }, | |
431 | { 0x00, 0x80, 0x06, 0x00 }, | |
432 | { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }}; | |
433 | ||
434 | gdb_byte *p = NULL; | |
435 | int index = 0; | |
436 | ||
437 | score3_adjust_pc_and_fetch_inst (&adjust_pc, &len, byte_order); | |
438 | ||
439 | index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (len / 2 - 1); | |
440 | p = score_break_insns[index]; | |
441 | ||
442 | *pcptr = adjust_pc; | |
443 | *lenptr = len; | |
444 | ||
445 | return p; | |
446 | } | |
447 | ||
448 | static CORE_ADDR | |
449 | score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr) | |
450 | { | |
451 | CORE_ADDR adjust_pc = bpaddr; | |
452 | ||
453 | if (target_mach == bfd_mach_score3) | |
454 | score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL, | |
455 | gdbarch_byte_order (gdbarch)); | |
456 | else | |
457 | adjust_pc = align_down (adjust_pc, 2); | |
458 | ||
459 | return adjust_pc; | |
460 | } | |
461 | ||
27fd2f50 Q |
462 | static CORE_ADDR |
463 | score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr) | |
464 | { | |
465 | return align_down (addr, 16); | |
466 | } | |
467 | ||
468 | static void | |
469 | score_xfer_register (struct regcache *regcache, int regnum, int length, | |
470 | enum bfd_endian endian, gdb_byte *readbuf, | |
471 | const gdb_byte *writebuf, int buf_offset) | |
472 | { | |
473 | int reg_offset = 0; | |
5f814c3b DL |
474 | gdb_assert (regnum >= 0 |
475 | && regnum < ((target_mach == bfd_mach_score7) ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); | |
27fd2f50 Q |
476 | |
477 | switch (endian) | |
478 | { | |
479 | case BFD_ENDIAN_BIG: | |
480 | reg_offset = SCORE_REGSIZE - length; | |
481 | break; | |
482 | case BFD_ENDIAN_LITTLE: | |
483 | reg_offset = 0; | |
484 | break; | |
485 | case BFD_ENDIAN_UNKNOWN: | |
486 | reg_offset = 0; | |
487 | break; | |
488 | default: | |
5e29c264 Q |
489 | error ("Error: score_xfer_register in file:%s, line:%d!", |
490 | __FILE__, __LINE__); | |
27fd2f50 Q |
491 | } |
492 | ||
493 | if (readbuf != NULL) | |
494 | regcache_cooked_read_part (regcache, regnum, reg_offset, length, | |
495 | readbuf + buf_offset); | |
496 | if (writebuf != NULL) | |
497 | regcache_cooked_write_part (regcache, regnum, reg_offset, length, | |
498 | writebuf + buf_offset); | |
499 | } | |
500 | ||
501 | static enum return_value_convention | |
c055b101 | 502 | score_return_value (struct gdbarch *gdbarch, struct type *func_type, |
5f814c3b | 503 | struct type *type, struct regcache *regcache, |
27fd2f50 Q |
504 | gdb_byte * readbuf, const gdb_byte * writebuf) |
505 | { | |
506 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
507 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
508 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
509 | return RETURN_VALUE_STRUCT_CONVENTION; | |
510 | else | |
511 | { | |
512 | int offset; | |
513 | int regnum; | |
514 | for (offset = 0, regnum = SCORE_A0_REGNUM; | |
515 | offset < TYPE_LENGTH (type); | |
516 | offset += SCORE_REGSIZE, regnum++) | |
517 | { | |
518 | int xfer = SCORE_REGSIZE; | |
519 | if (offset + xfer > TYPE_LENGTH (type)) | |
520 | xfer = TYPE_LENGTH (type) - offset; | |
4c6b5505 | 521 | score_xfer_register (regcache, regnum, xfer, |
5f814c3b | 522 | gdbarch_byte_order(gdbarch), |
27fd2f50 Q |
523 | readbuf, writebuf, offset); |
524 | } | |
525 | return RETURN_VALUE_REGISTER_CONVENTION; | |
526 | } | |
527 | } | |
528 | ||
529 | static struct frame_id | |
94afd7a6 | 530 | score_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
27fd2f50 Q |
531 | { |
532 | return frame_id_build ( | |
94afd7a6 UW |
533 | get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM), |
534 | get_frame_pc (this_frame)); | |
27fd2f50 Q |
535 | } |
536 | ||
537 | static int | |
538 | score_type_needs_double_align (struct type *type) | |
539 | { | |
540 | enum type_code typecode = TYPE_CODE (type); | |
541 | ||
5e29c264 Q |
542 | if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8) |
543 | || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)) | |
27fd2f50 Q |
544 | return 1; |
545 | else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION) | |
546 | { | |
547 | int i, n; | |
548 | ||
549 | n = TYPE_NFIELDS (type); | |
550 | for (i = 0; i < n; i++) | |
551 | if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i))) | |
552 | return 1; | |
553 | return 0; | |
554 | } | |
555 | return 0; | |
556 | } | |
557 | ||
558 | static CORE_ADDR | |
559 | score_push_dummy_call (struct gdbarch *gdbarch, struct value *function, | |
560 | struct regcache *regcache, CORE_ADDR bp_addr, | |
561 | int nargs, struct value **args, CORE_ADDR sp, | |
562 | int struct_return, CORE_ADDR struct_addr) | |
563 | { | |
e17a4113 | 564 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
27fd2f50 Q |
565 | int argnum; |
566 | int argreg; | |
567 | int arglen = 0; | |
568 | CORE_ADDR stack_offset = 0; | |
569 | CORE_ADDR addr = 0; | |
570 | ||
571 | /* Step 1, Save RA. */ | |
572 | regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr); | |
573 | ||
574 | /* Step 2, Make space on the stack for the args. */ | |
575 | struct_addr = align_down (struct_addr, 16); | |
576 | sp = align_down (sp, 16); | |
577 | for (argnum = 0; argnum < nargs; argnum++) | |
578 | arglen += align_up (TYPE_LENGTH (value_type (args[argnum])), | |
579 | SCORE_REGSIZE); | |
580 | sp -= align_up (arglen, 16); | |
581 | ||
582 | argreg = SCORE_BEGIN_ARG_REGNUM; | |
583 | ||
5e29c264 Q |
584 | /* Step 3, Check if struct return then save the struct address to |
585 | r4 and increase the stack_offset by 4. */ | |
27fd2f50 Q |
586 | if (struct_return) |
587 | { | |
588 | regcache_cooked_write_unsigned (regcache, argreg++, struct_addr); | |
589 | stack_offset += SCORE_REGSIZE; | |
590 | } | |
591 | ||
592 | /* Step 4, Load arguments: | |
5e29c264 Q |
593 | If arg length is too long (> 4 bytes), then split the arg and |
594 | save every parts. */ | |
27fd2f50 Q |
595 | for (argnum = 0; argnum < nargs; argnum++) |
596 | { | |
597 | struct value *arg = args[argnum]; | |
598 | struct type *arg_type = check_typedef (value_type (arg)); | |
27fd2f50 Q |
599 | enum type_code typecode = TYPE_CODE (arg_type); |
600 | const gdb_byte *val = value_contents (arg); | |
601 | int downward_offset = 0; | |
1cfd2c3e JB |
602 | int odd_sized_struct_p; |
603 | int arg_last_part_p = 0; | |
27fd2f50 | 604 | |
1cfd2c3e JB |
605 | arglen = TYPE_LENGTH (arg_type); |
606 | odd_sized_struct_p = (arglen > SCORE_REGSIZE | |
5e29c264 | 607 | && arglen % SCORE_REGSIZE != 0); |
27fd2f50 Q |
608 | |
609 | /* If a arg should be aligned to 8 bytes (long long or double), | |
610 | the value should be put to even register numbers. */ | |
611 | if (score_type_needs_double_align (arg_type)) | |
612 | { | |
613 | if (argreg & 1) | |
614 | argreg++; | |
615 | } | |
616 | ||
617 | /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose | |
618 | the default "downward"/"upward" method: | |
619 | ||
620 | Example: | |
621 | ||
622 | struct struc | |
623 | { | |
624 | char a; char b; char c; | |
625 | } s = {'a', 'b', 'c'}; | |
626 | ||
627 | Big endian: s = {X, 'a', 'b', 'c'} | |
628 | Little endian: s = {'a', 'b', 'c', X} | |
629 | ||
630 | Where X is a hole. */ | |
631 | ||
5f814c3b | 632 | if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG |
27fd2f50 Q |
633 | && (typecode == TYPE_CODE_STRUCT |
634 | || typecode == TYPE_CODE_UNION) | |
635 | && argreg > SCORE_LAST_ARG_REGNUM | |
636 | && arglen < SCORE_REGSIZE) | |
637 | downward_offset += (SCORE_REGSIZE - arglen); | |
638 | ||
639 | while (arglen > 0) | |
640 | { | |
641 | int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE; | |
e17a4113 | 642 | ULONGEST regval = extract_unsigned_integer (val, partial_len, |
5f814c3b | 643 | byte_order); |
27fd2f50 Q |
644 | |
645 | /* The last part of a arg should shift left when | |
4c6b5505 | 646 | gdbarch_byte_order is BFD_ENDIAN_BIG. */ |
5f814c3b | 647 | if (byte_order == BFD_ENDIAN_BIG |
27fd2f50 Q |
648 | && arg_last_part_p == 1 |
649 | && (typecode == TYPE_CODE_STRUCT | |
650 | || typecode == TYPE_CODE_UNION)) | |
651 | regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT); | |
652 | ||
653 | /* Always increase the stack_offset and save args to stack. */ | |
654 | addr = sp + stack_offset + downward_offset; | |
655 | write_memory (addr, val, partial_len); | |
656 | ||
657 | if (argreg <= SCORE_LAST_ARG_REGNUM) | |
658 | { | |
659 | regcache_cooked_write_unsigned (regcache, argreg++, regval); | |
660 | if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2) | |
661 | arg_last_part_p = 1; | |
662 | } | |
663 | ||
664 | val += partial_len; | |
665 | arglen -= partial_len; | |
666 | stack_offset += align_up (partial_len, SCORE_REGSIZE); | |
667 | } | |
668 | } | |
669 | ||
670 | /* Step 5, Save SP. */ | |
671 | regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp); | |
672 | ||
673 | return sp; | |
674 | } | |
675 | ||
27fd2f50 | 676 | static CORE_ADDR |
5f814c3b | 677 | score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
27fd2f50 Q |
678 | { |
679 | CORE_ADDR cpc = pc; | |
680 | int iscan = 32, stack_sub = 0; | |
681 | while (iscan-- > 0) | |
682 | { | |
5f814c3b | 683 | inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL); |
27fd2f50 Q |
684 | if (!inst) |
685 | break; | |
5f814c3b | 686 | if ((inst->len == 4) && !stack_sub |
27fd2f50 Q |
687 | && (G_FLD (inst->v, 29, 25) == 0x1 |
688 | && G_FLD (inst->v, 24, 20) == 0x0)) | |
689 | { | |
690 | /* addi r0, offset */ | |
5f814c3b DL |
691 | stack_sub = cpc + SCORE_INSTLEN; |
692 | pc = cpc + SCORE_INSTLEN; | |
27fd2f50 | 693 | } |
5f814c3b DL |
694 | else if ((inst->len == 4) |
695 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
696 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
697 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
698 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
699 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
27fd2f50 Q |
700 | { |
701 | /* mv r2, r0 */ | |
702 | pc = cpc + SCORE_INSTLEN; | |
703 | break; | |
704 | } | |
5f814c3b DL |
705 | else if ((inst->len == 2) |
706 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
707 | && (G_FLD (inst->v, 11, 8) == 0x2) | |
708 | && (G_FLD (inst->v, 7, 4) == 0x0) | |
709 | && (G_FLD (inst->v, 3, 0) == 0x3)) | |
27fd2f50 Q |
710 | { |
711 | /* mv! r2, r0 */ | |
712 | pc = cpc + SCORE16_INSTLEN; | |
713 | break; | |
714 | } | |
5f814c3b | 715 | else if ((inst->len == 2) |
27fd2f50 Q |
716 | && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */ |
717 | || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */ | |
718 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
719 | && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */ | |
720 | break; | |
5f814c3b | 721 | else if ((inst->len == 4) |
27fd2f50 Q |
722 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ |
723 | || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */ | |
724 | || (G_FLD (inst->v, 29, 25) == 0x0 | |
725 | && G_FLD (inst->v, 6, 1) == 0x4))) /* br */ | |
726 | break; | |
727 | ||
5f814c3b | 728 | cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN; |
27fd2f50 Q |
729 | } |
730 | return pc; | |
731 | } | |
732 | ||
5f814c3b DL |
733 | static CORE_ADDR |
734 | score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) | |
27fd2f50 | 735 | { |
5f814c3b DL |
736 | CORE_ADDR cpc = pc; |
737 | int iscan = 32, stack_sub = 0; | |
738 | while (iscan-- > 0) | |
739 | { | |
740 | inst_t *inst | |
741 | = score3_adjust_pc_and_fetch_inst (&cpc, NULL, gdbarch_byte_order (gdbarch)); | |
27fd2f50 | 742 | |
5f814c3b DL |
743 | if (!inst) |
744 | break; | |
745 | if (inst->len == 4 && !stack_sub | |
746 | && (G_FLD (inst->v, 29, 25) == 0x1) | |
747 | && (G_FLD (inst->v, 19, 17) == 0x0) | |
748 | && (G_FLD (inst->v, 24, 20) == 0x0)) | |
749 | { | |
750 | /* addi r0, offset */ | |
751 | stack_sub = cpc + inst->len; | |
752 | pc = cpc + inst->len; | |
753 | } | |
754 | else if (inst->len == 4 | |
755 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
756 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
757 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
758 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
759 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
760 | { | |
761 | /* mv r2, r0 */ | |
762 | pc = cpc + inst->len; | |
763 | break; | |
764 | } | |
765 | else if ((inst->len == 2) | |
766 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
767 | && (G_FLD (inst->v, 9, 5) == 0x2) | |
768 | && (G_FLD (inst->v, 4, 0) == 0x0)) | |
769 | { | |
770 | /* mv! r2, r0 */ | |
771 | pc = cpc + inst->len; | |
772 | break; | |
773 | } | |
774 | else if (inst->len == 2 | |
775 | && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */ | |
776 | || (G_FLD (inst->v, 14, 12) == 0x0 | |
777 | && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */ | |
778 | break; | |
779 | else if (inst->len == 4 | |
780 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ | |
781 | || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */ | |
782 | break; | |
783 | ||
784 | cpc += inst->len; | |
785 | } | |
786 | return pc; | |
787 | } | |
788 | ||
789 | static int | |
790 | score7_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
791 | { | |
792 | inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL); | |
793 | ||
794 | if (inst->v == 0x23) | |
795 | return 1; /* mv! r0, r2 */ | |
796 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
797 | && G_FLD (inst->v, 3, 0) == 0xa) | |
798 | return 1; /* pop! */ | |
27fd2f50 Q |
799 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
800 | && G_FLD (inst->v, 7, 0) == 0x34) | |
801 | return 1; /* br! r3 */ | |
802 | else if (G_FLD (inst->v, 29, 15) == 0x2 | |
803 | && G_FLD (inst->v, 6, 1) == 0x2b) | |
804 | return 1; /* mv r0, r2 */ | |
805 | else if (G_FLD (inst->v, 29, 25) == 0x0 | |
806 | && G_FLD (inst->v, 6, 1) == 0x4 | |
807 | && G_FLD (inst->v, 19, 15) == 0x3) | |
808 | return 1; /* br r3 */ | |
809 | else | |
810 | return 0; | |
811 | } | |
812 | ||
5f814c3b DL |
813 | static int |
814 | score3_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) | |
815 | { | |
816 | CORE_ADDR pc = cur_pc; | |
817 | inst_t *inst | |
818 | = score3_adjust_pc_and_fetch_inst (&pc, NULL, gdbarch_byte_order (gdbarch)); | |
819 | ||
820 | if (inst->len == 2 | |
821 | && (G_FLD (inst->v, 14, 10) == 0x10) | |
822 | && (G_FLD (inst->v, 9, 5) == 0x0) | |
823 | && (G_FLD (inst->v, 4, 0) == 0x2)) | |
824 | return 1; /* mv! r0, r2 */ | |
825 | else if (inst->len == 4 | |
826 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
827 | && (G_FLD (inst->v, 24, 20) == 0x2) | |
828 | && (G_FLD (inst->v, 19, 15) == 0x0) | |
829 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
830 | && (G_FLD (inst->v, 9, 0) == 0x56)) | |
831 | return 1; /* mv r0, r2 */ | |
832 | else if (inst->len == 2 | |
833 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
834 | && (G_FLD (inst->v, 11, 5) == 0x2)) | |
835 | return 1; /* pop! */ | |
836 | else if (inst->len == 2 | |
837 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
838 | && (G_FLD (inst->v, 11, 7) == 0x0) | |
839 | && (G_FLD (inst->v, 6, 5) == 0x2)) | |
840 | return 1; /* rpop! */ | |
841 | else if (inst->len == 2 | |
842 | && (G_FLD (inst->v, 14, 12) == 0x0) | |
843 | && (G_FLD (inst->v, 11, 5) == 0x4) | |
844 | && (G_FLD (inst->v, 4, 0) == 0x3)) | |
845 | return 1; /* br! r3 */ | |
846 | else if (inst->len == 4 | |
847 | && (G_FLD (inst->v, 29, 25) == 0x0) | |
848 | && (G_FLD (inst->v, 24, 20) == 0x0) | |
849 | && (G_FLD (inst->v, 19, 15) == 0x3) | |
850 | && (G_FLD (inst->v, 14, 10) == 0xF) | |
851 | && (G_FLD (inst->v, 9, 0) == 0x8)) | |
852 | return 1; /* br r3 */ | |
853 | else | |
854 | return 0; | |
855 | } | |
856 | ||
857 | static char * | |
858 | score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size) | |
859 | { | |
860 | int ret; | |
861 | char *memblock = NULL; | |
862 | ||
863 | if (size < 0) | |
864 | { | |
865 | error ("Error: malloc size < 0 in file:%s, line:%d!", | |
866 | __FILE__, __LINE__); | |
867 | return NULL; | |
868 | } | |
869 | else if (size == 0) | |
870 | return NULL; | |
871 | ||
872 | memblock = (char *) xmalloc (size); | |
873 | memset (memblock, 0, size); | |
874 | ret = target_read_memory (addr & ~0x3, memblock, size); | |
875 | if (ret) | |
876 | { | |
877 | error ("Error: target_read_memory in file:%s, line:%d!", | |
878 | __FILE__, __LINE__); | |
879 | return NULL; | |
880 | } | |
881 | return memblock; | |
882 | } | |
883 | ||
27fd2f50 | 884 | static void |
5f814c3b DL |
885 | score7_free_memblock (char *memblock) |
886 | { | |
887 | xfree (memblock); | |
888 | } | |
889 | ||
890 | static void | |
891 | score7_adjust_memblock_ptr (char **memblock, CORE_ADDR prev_pc, | |
892 | CORE_ADDR cur_pc) | |
893 | { | |
894 | if (prev_pc == -1) | |
895 | { | |
896 | /* First time call this function, do nothing. */ | |
897 | } | |
898 | else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0) | |
899 | { | |
900 | /* First 16-bit instruction, then 32-bit instruction. */ | |
901 | *memblock += SCORE_INSTLEN; | |
902 | } | |
903 | else if (cur_pc - prev_pc == 4) | |
904 | { | |
905 | /* Is 32-bit instruction, increase MEMBLOCK by 4. */ | |
906 | *memblock += SCORE_INSTLEN; | |
907 | } | |
908 | } | |
909 | ||
910 | static void | |
911 | score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
94afd7a6 | 912 | struct frame_info *this_frame, |
27fd2f50 Q |
913 | struct score_frame_cache *this_cache) |
914 | { | |
94afd7a6 | 915 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
27fd2f50 | 916 | CORE_ADDR sp; |
5e29c264 | 917 | CORE_ADDR fp; |
27fd2f50 Q |
918 | CORE_ADDR cur_pc = startaddr; |
919 | ||
920 | int sp_offset = 0; | |
921 | int ra_offset = 0; | |
922 | int fp_offset = 0; | |
923 | int ra_offset_p = 0; | |
924 | int fp_offset_p = 0; | |
925 | int inst_len = 0; | |
926 | ||
5e29c264 Q |
927 | char *memblock = NULL; |
928 | char *memblock_ptr = NULL; | |
929 | CORE_ADDR prev_pc = -1; | |
930 | ||
931 | /* Allocate MEMBLOCK if PC - STARTADDR > 0. */ | |
932 | memblock_ptr = memblock = | |
5f814c3b | 933 | score7_malloc_and_get_memblock (startaddr, pc - startaddr); |
5e29c264 | 934 | |
94afd7a6 UW |
935 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
936 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
27fd2f50 | 937 | |
5e29c264 | 938 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) |
27fd2f50 | 939 | { |
5e29c264 Q |
940 | inst_t *inst = NULL; |
941 | if (memblock != NULL) | |
942 | { | |
943 | /* Reading memory block from target succefully and got all | |
944 | the instructions(from STARTADDR to PC) needed. */ | |
5f814c3b DL |
945 | score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc); |
946 | inst = score7_fetch_inst (gdbarch, cur_pc, memblock); | |
5e29c264 Q |
947 | } |
948 | else | |
949 | { | |
950 | /* Otherwise, we fetch 4 bytes from target, and GDB also | |
951 | work correctly. */ | |
5f814c3b | 952 | inst = score7_fetch_inst (gdbarch, cur_pc, NULL); |
5e29c264 Q |
953 | } |
954 | ||
5f814c3b DL |
955 | /* FIXME: make a full-power prologue analyzer */ |
956 | if (inst->len == 2) | |
27fd2f50 Q |
957 | { |
958 | inst_len = SCORE16_INSTLEN; | |
959 | ||
960 | if (G_FLD (inst->v, 14, 12) == 0x2 | |
961 | && G_FLD (inst->v, 3, 0) == 0xe) | |
962 | { | |
963 | /* push! */ | |
964 | sp_offset += 4; | |
965 | ||
966 | if (G_FLD (inst->v, 11, 7) == 0x6 | |
967 | && ra_offset_p == 0) | |
968 | { | |
969 | /* push! r3, [r0] */ | |
970 | ra_offset = sp_offset; | |
971 | ra_offset_p = 1; | |
972 | } | |
973 | else if (G_FLD (inst->v, 11, 7) == 0x4 | |
974 | && fp_offset_p == 0) | |
975 | { | |
976 | /* push! r2, [r0] */ | |
977 | fp_offset = sp_offset; | |
978 | fp_offset_p = 1; | |
979 | } | |
980 | } | |
981 | else if (G_FLD (inst->v, 14, 12) == 0x2 | |
982 | && G_FLD (inst->v, 3, 0) == 0xa) | |
983 | { | |
984 | /* pop! */ | |
985 | sp_offset -= 4; | |
986 | } | |
987 | else if (G_FLD (inst->v, 14, 7) == 0xc1 | |
988 | && G_FLD (inst->v, 2, 0) == 0x0) | |
989 | { | |
990 | /* subei! r0, n */ | |
991 | sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3)); | |
992 | } | |
993 | else if (G_FLD (inst->v, 14, 7) == 0xc0 | |
994 | && G_FLD (inst->v, 2, 0) == 0x0) | |
995 | { | |
996 | /* addei! r0, n */ | |
997 | sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3)); | |
998 | } | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | inst_len = SCORE_INSTLEN; | |
1003 | ||
5f814c3b DL |
1004 | if (G_FLD(inst->v, 29, 25) == 0x3 |
1005 | && G_FLD(inst->v, 2, 0) == 0x4 | |
1006 | && G_FLD(inst->v, 19, 15) == 0) | |
27fd2f50 | 1007 | { |
5f814c3b DL |
1008 | /* sw rD, [r0, offset]+ */ |
1009 | sp_offset += SCORE_INSTLEN; | |
1010 | ||
1011 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
1012 | { | |
1013 | /* rD = r3 */ | |
1014 | if (ra_offset_p == 0) | |
1015 | { | |
1016 | ra_offset = sp_offset; | |
1017 | ra_offset_p = 1; | |
1018 | } | |
1019 | } | |
1020 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
1021 | { | |
1022 | /* rD = r2 */ | |
1023 | if (fp_offset_p == 0) | |
1024 | { | |
1025 | fp_offset = sp_offset; | |
1026 | fp_offset_p = 1; | |
1027 | } | |
1028 | } | |
27fd2f50 | 1029 | } |
5f814c3b DL |
1030 | else if (G_FLD(inst->v, 29, 25) == 0x14 |
1031 | && G_FLD(inst->v, 19,15) == 0) | |
27fd2f50 | 1032 | { |
5f814c3b DL |
1033 | /* sw rD, [r0, offset] */ |
1034 | if (G_FLD(inst->v, 24, 20) == 0x3) | |
1035 | { | |
1036 | /* rD = r3 */ | |
1037 | ra_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
1038 | ra_offset_p = 1; | |
1039 | } | |
1040 | else if (G_FLD(inst->v, 24, 20) == 0x2) | |
1041 | { | |
1042 | /* rD = r2 */ | |
1043 | fp_offset = sp_offset - G_FLD(inst->v, 14, 0); | |
1044 | fp_offset_p = 1; | |
1045 | } | |
27fd2f50 Q |
1046 | } |
1047 | else if (G_FLD (inst->v, 29, 15) == 0x1c60 | |
1048 | && G_FLD (inst->v, 2, 0) == 0x0) | |
1049 | { | |
1050 | /* lw r3, [r0]+, 4 */ | |
1051 | sp_offset -= SCORE_INSTLEN; | |
1052 | ra_offset_p = 1; | |
1053 | } | |
1054 | else if (G_FLD (inst->v, 29, 15) == 0x1c40 | |
1055 | && G_FLD (inst->v, 2, 0) == 0x0) | |
1056 | { | |
1057 | /* lw r2, [r0]+, 4 */ | |
1058 | sp_offset -= SCORE_INSTLEN; | |
1059 | fp_offset_p = 1; | |
1060 | } | |
1061 | ||
1062 | else if (G_FLD (inst->v, 29, 17) == 0x100 | |
1063 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1064 | { | |
1065 | /* addi r0, -offset */ | |
1066 | sp_offset += 65536 - G_FLD (inst->v, 16, 1); | |
1067 | } | |
1068 | else if (G_FLD (inst->v, 29, 17) == 0x110 | |
1069 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1070 | { | |
1071 | /* addi r2, offset */ | |
1072 | if (pc - cur_pc > 4) | |
1073 | { | |
1074 | unsigned int save_v = inst->v; | |
1075 | inst_t *inst2 = | |
5f814c3b | 1076 | score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL); |
27fd2f50 | 1077 | if (inst2->v == 0x23) |
5e29c264 Q |
1078 | { |
1079 | /* mv! r0, r2 */ | |
1080 | sp_offset -= G_FLD (save_v, 16, 1); | |
1081 | } | |
27fd2f50 Q |
1082 | } |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | /* Save RA. */ | |
1088 | if (ra_offset_p == 1) | |
1089 | { | |
1090 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1091 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1092 | sp + sp_offset - ra_offset; | |
1093 | } | |
1094 | else | |
1095 | { | |
1096 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1097 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1098 | } | |
1099 | ||
1100 | /* Save FP. */ | |
1101 | if (fp_offset_p == 1) | |
1102 | { | |
1103 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1104 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1105 | sp + sp_offset - fp_offset; | |
1106 | } | |
1107 | ||
5e29c264 Q |
1108 | /* Save SP and FP. */ |
1109 | this_cache->base = sp + sp_offset; | |
1110 | this_cache->fp = fp; | |
1111 | ||
1112 | /* Don't forget to free MEMBLOCK if we allocated it. */ | |
1113 | if (memblock_ptr != NULL) | |
5f814c3b DL |
1114 | score7_free_memblock (memblock_ptr); |
1115 | } | |
1116 | ||
1117 | static void | |
1118 | score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, | |
1119 | struct frame_info *this_frame, | |
1120 | struct score_frame_cache *this_cache) | |
1121 | { | |
1122 | CORE_ADDR sp; | |
1123 | CORE_ADDR fp; | |
1124 | CORE_ADDR cur_pc = startaddr; | |
1125 | enum bfd_endian byte_order = gdbarch_byte_order (get_frame_arch (this_frame)); | |
1126 | ||
1127 | int sp_offset = 0; | |
1128 | int ra_offset = 0; | |
1129 | int fp_offset = 0; | |
1130 | int ra_offset_p = 0; | |
1131 | int fp_offset_p = 0; | |
1132 | int inst_len = 0; | |
1133 | ||
1134 | CORE_ADDR prev_pc = -1; | |
1135 | ||
1136 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); | |
1137 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); | |
1138 | ||
1139 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) | |
1140 | { | |
1141 | inst_t *inst = NULL; | |
1142 | ||
1143 | inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order); | |
1144 | ||
1145 | /* FIXME: make a full-power prologue analyzer */ | |
1146 | if (inst->len == 2) | |
1147 | { | |
1148 | if (G_FLD (inst->v, 14, 12) == 0x0 | |
1149 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1150 | && G_FLD (inst->v, 6, 5) == 0x3) | |
1151 | { | |
1152 | /* push! */ | |
1153 | sp_offset += 4; | |
1154 | ||
1155 | if (G_FLD (inst->v, 4, 0) == 0x3 | |
1156 | && ra_offset_p == 0) | |
1157 | { | |
1158 | /* push! r3, [r0] */ | |
1159 | ra_offset = sp_offset; | |
1160 | ra_offset_p = 1; | |
1161 | } | |
1162 | else if (G_FLD (inst->v, 4, 0) == 0x2 | |
1163 | && fp_offset_p == 0) | |
1164 | { | |
1165 | /* push! r2, [r0] */ | |
1166 | fp_offset = sp_offset; | |
1167 | fp_offset_p = 1; | |
1168 | } | |
1169 | } | |
1170 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1171 | && G_FLD (inst->v, 11, 10) == 0x3) | |
1172 | { | |
1173 | /* rpush! */ | |
1174 | int start_r = G_FLD (inst->v, 9, 5); | |
1175 | int cnt = G_FLD (inst->v, 4, 0); | |
1176 | ||
1177 | if ((ra_offset_p == 0) | |
1178 | && (start_r <= SCORE_RA_REGNUM) | |
1179 | && (SCORE_RA_REGNUM < start_r + cnt)) | |
1180 | { | |
1181 | /* rpush! contains r3 */ | |
1182 | ra_offset_p = 1; | |
1183 | ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4; | |
1184 | } | |
1185 | ||
1186 | if ((fp_offset_p == 0) | |
1187 | && (start_r <= SCORE_FP_REGNUM) | |
1188 | && (SCORE_FP_REGNUM < start_r + cnt)) | |
1189 | { | |
1190 | /* rpush! contains r2 */ | |
1191 | fp_offset_p = 1; | |
1192 | fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4; | |
1193 | } | |
1194 | ||
1195 | sp_offset += 4 * cnt; | |
1196 | } | |
1197 | else if (G_FLD (inst->v, 14, 12) == 0x0 | |
1198 | && G_FLD (inst->v, 11, 7) == 0x0 | |
1199 | && G_FLD (inst->v, 6, 5) == 0x2) | |
1200 | { | |
1201 | /* pop! */ | |
1202 | sp_offset -= 4; | |
1203 | } | |
1204 | else if (G_FLD (inst->v, 14, 12) == 0x6 | |
1205 | && G_FLD (inst->v, 11, 10) == 0x2) | |
1206 | { | |
1207 | /* rpop! */ | |
1208 | sp_offset -= 4 * G_FLD (inst->v, 4, 0); | |
1209 | } | |
1210 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1211 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1212 | && G_FLD (inst->v, 9, 6) == 0x0) | |
1213 | { | |
1214 | /* addi! r0, -offset */ | |
1215 | int imm = G_FLD (inst->v, 5, 0); | |
1216 | if (imm >> 5) | |
1217 | imm = -(0x3F - imm + 1); | |
1218 | sp_offset -= imm; | |
1219 | } | |
1220 | else if (G_FLD (inst->v, 14, 12) == 0x5 | |
1221 | && G_FLD (inst->v, 11, 10) == 0x3 | |
1222 | && G_FLD (inst->v, 9, 6) == 0x2) | |
1223 | { | |
1224 | /* addi! r2, offset */ | |
1225 | if (pc - cur_pc >= 2) | |
1226 | { | |
1227 | unsigned int save_v = inst->v; | |
1228 | inst_t *inst2; | |
1229 | ||
1230 | cur_pc += inst->len; | |
1231 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, byte_order); | |
1232 | ||
1233 | if (inst2->len == 2 | |
1234 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1235 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1236 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1237 | { | |
1238 | /* mv! r0, r2 */ | |
1239 | int imm = G_FLD (inst->v, 5, 0); | |
1240 | if (imm >> 5) | |
1241 | imm = -(0x3F - imm + 1); | |
1242 | sp_offset -= imm; | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | else if (inst->len == 4) | |
1248 | { | |
1249 | if (G_FLD (inst->v, 29, 25) == 0x3 | |
1250 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1251 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1252 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1253 | { | |
1254 | /* sw r3, [r0, offset]+ */ | |
1255 | sp_offset += inst->len; | |
1256 | if (ra_offset_p == 0) | |
1257 | { | |
1258 | ra_offset = sp_offset; | |
1259 | ra_offset_p = 1; | |
1260 | } | |
1261 | } | |
1262 | else if (G_FLD (inst->v, 29, 25) == 0x3 | |
1263 | && G_FLD (inst->v, 2, 0) == 0x4 | |
1264 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1265 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1266 | { | |
1267 | /* sw r2, [r0, offset]+ */ | |
1268 | sp_offset += inst->len; | |
1269 | if (fp_offset_p == 0) | |
1270 | { | |
1271 | fp_offset = sp_offset; | |
1272 | fp_offset_p = 1; | |
1273 | } | |
1274 | } | |
1275 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1276 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1277 | && G_FLD (inst->v, 24, 20) == 0x3 | |
1278 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1279 | { | |
1280 | /* lw r3, [r0]+, 4 */ | |
1281 | sp_offset -= inst->len; | |
1282 | ra_offset_p = 1; | |
1283 | } | |
1284 | else if (G_FLD (inst->v, 29, 25) == 0x7 | |
1285 | && G_FLD (inst->v, 2, 0) == 0x0 | |
1286 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1287 | && G_FLD (inst->v, 19, 15) == 0x0) | |
1288 | { | |
1289 | /* lw r2, [r0]+, 4 */ | |
1290 | sp_offset -= inst->len; | |
1291 | fp_offset_p = 1; | |
1292 | } | |
1293 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1294 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1295 | && G_FLD (inst->v, 24, 20) == 0x0 | |
1296 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1297 | { | |
1298 | /* addi r0, -offset */ | |
1299 | int imm = G_FLD (inst->v, 16, 1); | |
1300 | if (imm >> 15) | |
1301 | imm = -(0xFFFF - imm + 1); | |
1302 | sp_offset -= imm; | |
1303 | } | |
1304 | else if (G_FLD (inst->v, 29, 25) == 0x1 | |
1305 | && G_FLD (inst->v, 19, 17) == 0x0 | |
1306 | && G_FLD (inst->v, 24, 20) == 0x2 | |
1307 | && G_FLD (inst->v, 0, 0) == 0x0) | |
1308 | { | |
1309 | /* addi r2, offset */ | |
1310 | if (pc - cur_pc >= 2) | |
1311 | { | |
1312 | unsigned int save_v = inst->v; | |
1313 | inst_t *inst2; | |
1314 | ||
1315 | cur_pc += inst->len; | |
1316 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, byte_order); | |
1317 | ||
1318 | if (inst2->len == 2 | |
1319 | && G_FLD (inst2->v, 14, 10) == 0x10 | |
1320 | && G_FLD (inst2->v, 9, 5) == 0x0 | |
1321 | && G_FLD (inst2->v, 4, 0) == 0x2) | |
1322 | { | |
1323 | /* mv! r0, r2 */ | |
1324 | int imm = G_FLD (inst->v, 16, 1); | |
1325 | if (imm >> 15) | |
1326 | imm = -(0xFFFF - imm + 1); | |
1327 | sp_offset -= imm; | |
1328 | } | |
1329 | } | |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | /* Save RA. */ | |
1335 | if (ra_offset_p == 1) | |
1336 | { | |
1337 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) | |
1338 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = | |
1339 | sp + sp_offset - ra_offset; | |
1340 | } | |
1341 | else | |
1342 | { | |
1343 | this_cache->saved_regs[SCORE_PC_REGNUM] = | |
1344 | this_cache->saved_regs[SCORE_RA_REGNUM]; | |
1345 | } | |
1346 | ||
1347 | /* Save FP. */ | |
1348 | if (fp_offset_p == 1) | |
1349 | { | |
1350 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) | |
1351 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = | |
1352 | sp + sp_offset - fp_offset; | |
1353 | } | |
1354 | ||
1355 | /* Save SP and FP. */ | |
1356 | this_cache->base = sp + sp_offset; | |
1357 | this_cache->fp = fp; | |
27fd2f50 Q |
1358 | } |
1359 | ||
1360 | static struct score_frame_cache * | |
94afd7a6 | 1361 | score_make_prologue_cache (struct frame_info *this_frame, void **this_cache) |
27fd2f50 Q |
1362 | { |
1363 | struct score_frame_cache *cache; | |
1364 | ||
1365 | if ((*this_cache) != NULL) | |
1366 | return (*this_cache); | |
1367 | ||
1368 | cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache); | |
1369 | (*this_cache) = cache; | |
94afd7a6 | 1370 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
27fd2f50 Q |
1371 | |
1372 | /* Analyze the prologue. */ | |
1373 | { | |
94afd7a6 | 1374 | const CORE_ADDR pc = get_frame_pc (this_frame); |
27fd2f50 Q |
1375 | CORE_ADDR start_addr; |
1376 | ||
1377 | find_pc_partial_function (pc, NULL, &start_addr, NULL); | |
1378 | if (start_addr == 0) | |
1379 | return cache; | |
5f814c3b DL |
1380 | |
1381 | if (target_mach == bfd_mach_score3) | |
1382 | score3_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
1383 | else | |
1384 | score7_analyze_prologue (start_addr, pc, this_frame, *this_cache); | |
27fd2f50 Q |
1385 | } |
1386 | ||
1387 | /* Save SP. */ | |
1388 | trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base); | |
1389 | ||
1390 | return (*this_cache); | |
1391 | } | |
1392 | ||
1393 | static void | |
94afd7a6 | 1394 | score_prologue_this_id (struct frame_info *this_frame, void **this_cache, |
27fd2f50 Q |
1395 | struct frame_id *this_id) |
1396 | { | |
94afd7a6 | 1397 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1398 | this_cache); |
94afd7a6 | 1399 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
27fd2f50 Q |
1400 | } |
1401 | ||
94afd7a6 UW |
1402 | static struct value * |
1403 | score_prologue_prev_register (struct frame_info *this_frame, | |
1404 | void **this_cache, int regnum) | |
27fd2f50 | 1405 | { |
94afd7a6 | 1406 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
27fd2f50 | 1407 | this_cache); |
94afd7a6 | 1408 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
27fd2f50 Q |
1409 | } |
1410 | ||
1411 | static const struct frame_unwind score_prologue_unwind = | |
1412 | { | |
1413 | NORMAL_FRAME, | |
1414 | score_prologue_this_id, | |
94afd7a6 UW |
1415 | score_prologue_prev_register, |
1416 | NULL, | |
5f814c3b DL |
1417 | default_frame_sniffer, |
1418 | NULL | |
27fd2f50 Q |
1419 | }; |
1420 | ||
27fd2f50 | 1421 | static CORE_ADDR |
94afd7a6 | 1422 | score_prologue_frame_base_address (struct frame_info *this_frame, |
27fd2f50 Q |
1423 | void **this_cache) |
1424 | { | |
1425 | struct score_frame_cache *info = | |
94afd7a6 | 1426 | score_make_prologue_cache (this_frame, this_cache); |
5e29c264 | 1427 | return info->fp; |
27fd2f50 Q |
1428 | } |
1429 | ||
1430 | static const struct frame_base score_prologue_frame_base = | |
1431 | { | |
1432 | &score_prologue_unwind, | |
1433 | score_prologue_frame_base_address, | |
1434 | score_prologue_frame_base_address, | |
1435 | score_prologue_frame_base_address, | |
1436 | }; | |
1437 | ||
1438 | static const struct frame_base * | |
94afd7a6 | 1439 | score_prologue_frame_base_sniffer (struct frame_info *this_frame) |
27fd2f50 Q |
1440 | { |
1441 | return &score_prologue_frame_base; | |
1442 | } | |
1443 | ||
5f814c3b DL |
1444 | /* Core file support (dirty hack) |
1445 | ||
1446 | The core file MUST be generated by GNU/Linux on S+core */ | |
1447 | ||
1448 | static void | |
1449 | score7_linux_supply_gregset(const struct regset *regset, | |
1450 | struct regcache *regcache, | |
1451 | int regnum, const void *gregs_buf, size_t len) | |
1452 | { | |
1453 | int regno; | |
1454 | elf_gregset_t *gregs; | |
1455 | ||
1456 | gdb_assert (regset != NULL); | |
1457 | gdb_assert ((regcache != NULL) && (gregs_buf != NULL)); | |
1458 | ||
1459 | gregs = (elf_gregset_t *) gregs_buf; | |
1460 | ||
1461 | for (regno = 0; regno < 32; regno++) | |
1462 | if (regnum == -1 || regnum == regno) | |
1463 | regcache_raw_supply (regcache, regno, gregs->regs + regno); | |
1464 | ||
1465 | { | |
1466 | struct sreg { | |
1467 | int regnum; | |
1468 | void *buf; | |
1469 | } sregs [] = { | |
1470 | { 55, &(gregs->cel) }, /* CEL */ | |
1471 | { 54, &(gregs->ceh) }, /* CEH */ | |
1472 | { 53, &(gregs->sr0) }, /* sr0, i.e. cnt or COUNTER */ | |
1473 | { 52, &(gregs->sr1) }, /* sr1, i.e. lcr or LDCR */ | |
1474 | { 51, &(gregs->sr1) }, /* sr2, i.e. scr or STCR */ | |
1475 | ||
1476 | /* Exception occured at this address, exactly the PC we want */ | |
1477 | { 49, &(gregs->cp0_epc) }, /* PC */ | |
1478 | ||
1479 | { 38, &(gregs->cp0_ema) }, /* EMA */ | |
1480 | { 37, &(gregs->cp0_epc) }, /* EPC */ | |
1481 | { 34, &(gregs->cp0_ecr) }, /* ECR */ | |
1482 | { 33, &(gregs->cp0_condition) }, /* COND */ | |
1483 | { 32, &(gregs->cp0_psr) }, /* PSR */ | |
1484 | }; | |
1485 | ||
1486 | for (regno = 0; regno < sizeof(sregs)/sizeof(sregs[0]); regno++) | |
1487 | if (regnum == -1 || regnum == sregs[regno].regnum) | |
1488 | regcache_raw_supply (regcache, sregs[regno].regnum, sregs[regno].buf); | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | /* Return the appropriate register set from the core section identified | |
1493 | by SECT_NAME and SECT_SIZE. */ | |
1494 | ||
1495 | static const struct regset * | |
1496 | score7_linux_regset_from_core_section(struct gdbarch *gdbarch, | |
1497 | const char *sect_name, size_t sect_size) | |
1498 | { | |
1499 | struct gdbarch_tdep *tdep; | |
1500 | ||
1501 | gdb_assert (gdbarch != NULL); | |
1502 | gdb_assert (sect_name != NULL); | |
1503 | ||
1504 | tdep = gdbarch_tdep (gdbarch); | |
1505 | ||
1506 | if (strcmp(sect_name, ".reg") == 0 && sect_size == sizeof(elf_gregset_t)) | |
1507 | { | |
1508 | if (tdep->gregset == NULL) | |
1509 | tdep->gregset = regset_alloc (gdbarch, score7_linux_supply_gregset, NULL); | |
1510 | return tdep->gregset; | |
1511 | } | |
1512 | ||
1513 | return NULL; | |
1514 | } | |
1515 | ||
27fd2f50 Q |
1516 | static struct gdbarch * |
1517 | score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
1518 | { | |
1519 | struct gdbarch *gdbarch; | |
5f814c3b DL |
1520 | struct gdbarch_tdep *tdep; |
1521 | target_mach = info.bfd_arch_info->mach; | |
27fd2f50 Q |
1522 | |
1523 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1524 | if (arches != NULL) | |
1525 | { | |
1526 | return (arches->gdbarch); | |
1527 | } | |
5f814c3b DL |
1528 | tdep = xcalloc(1, sizeof(struct gdbarch_tdep)); |
1529 | gdbarch = gdbarch_alloc (&info, tdep); | |
27fd2f50 Q |
1530 | |
1531 | set_gdbarch_short_bit (gdbarch, 16); | |
1532 | set_gdbarch_int_bit (gdbarch, 32); | |
1533 | set_gdbarch_float_bit (gdbarch, 32); | |
1534 | set_gdbarch_double_bit (gdbarch, 64); | |
1535 | set_gdbarch_long_double_bit (gdbarch, 64); | |
5f814c3b | 1536 | #if WITH_SIM |
27fd2f50 | 1537 | set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno); |
5f814c3b | 1538 | #endif |
27fd2f50 Q |
1539 | set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM); |
1540 | set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM); | |
5f814c3b | 1541 | set_gdbarch_adjust_breakpoint_address (gdbarch, score_adjust_breakpoint_address); |
27fd2f50 Q |
1542 | set_gdbarch_register_type (gdbarch, score_register_type); |
1543 | set_gdbarch_frame_align (gdbarch, score_frame_align); | |
1544 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
30244cd8 | 1545 | set_gdbarch_unwind_sp (gdbarch, score_unwind_sp); |
5f814c3b | 1546 | set_gdbarch_unwind_pc (gdbarch, score_unwind_pc); |
27fd2f50 | 1547 | set_gdbarch_print_insn (gdbarch, score_print_insn); |
5f814c3b DL |
1548 | |
1549 | switch (target_mach) | |
1550 | { | |
1551 | case bfd_mach_score7: | |
1552 | set_gdbarch_breakpoint_from_pc (gdbarch, score7_breakpoint_from_pc); | |
1553 | set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue); | |
1554 | set_gdbarch_in_function_epilogue_p (gdbarch, score7_in_function_epilogue_p); | |
1555 | set_gdbarch_register_name (gdbarch, score7_register_name); | |
1556 | set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS); | |
1557 | /* Core file support. */ | |
1558 | set_gdbarch_regset_from_core_section (gdbarch, score7_linux_regset_from_core_section); | |
1559 | break; | |
1560 | ||
1561 | case bfd_mach_score3: | |
1562 | set_gdbarch_breakpoint_from_pc (gdbarch, score3_breakpoint_from_pc); | |
1563 | set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue); | |
1564 | set_gdbarch_in_function_epilogue_p (gdbarch, score3_in_function_epilogue_p); | |
1565 | set_gdbarch_register_name (gdbarch, score3_register_name); | |
1566 | set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS); | |
1567 | break; | |
1568 | } | |
5e29c264 Q |
1569 | |
1570 | /* Watchpoint hooks. */ | |
1571 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); | |
1572 | ||
1573 | /* Dummy frame hooks. */ | |
27fd2f50 | 1574 | set_gdbarch_return_value (gdbarch, score_return_value); |
5e29c264 | 1575 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
94afd7a6 | 1576 | set_gdbarch_dummy_id (gdbarch, score_dummy_id); |
27fd2f50 Q |
1577 | set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call); |
1578 | ||
5e29c264 | 1579 | /* Normal frame hooks. */ |
94afd7a6 | 1580 | dwarf2_append_unwinders (gdbarch); |
27fd2f50 | 1581 | frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); |
94afd7a6 | 1582 | frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind); |
27fd2f50 Q |
1583 | frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer); |
1584 | ||
1585 | return gdbarch; | |
1586 | } | |
1587 | ||
1588 | extern initialize_file_ftype _initialize_score_tdep; | |
1589 | ||
1590 | void | |
1591 | _initialize_score_tdep (void) | |
1592 | { | |
1593 | gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL); | |
1594 | } |