Commit | Line | Data |
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8b39fe56 MK |
1 | /* Target-dependent code for UltraSPARC. |
2 | ||
6aba47ca | 3 | Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
8b39fe56 MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
8b39fe56 MK |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
02a71ae8 | 24 | #include "dwarf2-frame.h" |
8b39fe56 MK |
25 | #include "floatformat.h" |
26 | #include "frame.h" | |
27 | #include "frame-base.h" | |
28 | #include "frame-unwind.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbtypes.h" | |
386c036b MK |
31 | #include "inferior.h" |
32 | #include "symtab.h" | |
33 | #include "objfiles.h" | |
8b39fe56 MK |
34 | #include "osabi.h" |
35 | #include "regcache.h" | |
36 | #include "target.h" | |
37 | #include "value.h" | |
38 | ||
39 | #include "gdb_assert.h" | |
40 | #include "gdb_string.h" | |
41 | ||
42 | #include "sparc64-tdep.h" | |
43 | ||
44 | /* This file implements the The SPARC 64-bit ABI as defined by the | |
45 | section "Low-Level System Information" of the SPARC Compliance | |
46 | Definition (SCD) 2.4.1, which is the 64-bit System V psABI for | |
47 | SPARC. */ | |
48 | ||
49 | /* Please use the sparc32_-prefix for 32-bit specific code, the | |
50 | sparc64_-prefix for 64-bit specific code and the sparc_-prefix for | |
51 | code can handle both. */ | |
8b39fe56 MK |
52 | \f |
53 | /* The functions on this page are intended to be used to classify | |
54 | function arguments. */ | |
55 | ||
8b39fe56 MK |
56 | /* Check whether TYPE is "Integral or Pointer". */ |
57 | ||
58 | static int | |
59 | sparc64_integral_or_pointer_p (const struct type *type) | |
60 | { | |
61 | switch (TYPE_CODE (type)) | |
62 | { | |
63 | case TYPE_CODE_INT: | |
64 | case TYPE_CODE_BOOL: | |
65 | case TYPE_CODE_CHAR: | |
66 | case TYPE_CODE_ENUM: | |
67 | case TYPE_CODE_RANGE: | |
68 | { | |
69 | int len = TYPE_LENGTH (type); | |
70 | gdb_assert (len == 1 || len == 2 || len == 4 || len == 8); | |
71 | } | |
72 | return 1; | |
73 | case TYPE_CODE_PTR: | |
74 | case TYPE_CODE_REF: | |
75 | { | |
76 | int len = TYPE_LENGTH (type); | |
77 | gdb_assert (len == 8); | |
78 | } | |
79 | return 1; | |
80 | default: | |
81 | break; | |
82 | } | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | /* Check whether TYPE is "Floating". */ | |
88 | ||
89 | static int | |
90 | sparc64_floating_p (const struct type *type) | |
91 | { | |
92 | switch (TYPE_CODE (type)) | |
93 | { | |
94 | case TYPE_CODE_FLT: | |
95 | { | |
96 | int len = TYPE_LENGTH (type); | |
97 | gdb_assert (len == 4 || len == 8 || len == 16); | |
98 | } | |
99 | return 1; | |
100 | default: | |
101 | break; | |
102 | } | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | /* Check whether TYPE is "Structure or Union". */ | |
108 | ||
109 | static int | |
110 | sparc64_structure_or_union_p (const struct type *type) | |
111 | { | |
112 | switch (TYPE_CODE (type)) | |
113 | { | |
114 | case TYPE_CODE_STRUCT: | |
115 | case TYPE_CODE_UNION: | |
116 | return 1; | |
117 | default: | |
118 | break; | |
119 | } | |
120 | ||
121 | return 0; | |
122 | } | |
fd936806 MK |
123 | \f |
124 | ||
125 | /* Type for %pstate. */ | |
126 | struct type *sparc64_pstate_type; | |
127 | ||
128 | /* Type for %fsr. */ | |
129 | struct type *sparc64_fsr_type; | |
130 | ||
131 | /* Type for %fprs. */ | |
132 | struct type *sparc64_fprs_type; | |
133 | ||
134 | /* Construct types for ISA-specific registers. */ | |
135 | ||
136 | static void | |
137 | sparc64_init_types (void) | |
138 | { | |
139 | struct type *type; | |
140 | ||
141 | type = init_flags_type ("builtin_type_sparc64_pstate", 8); | |
142 | append_flags_type_flag (type, 0, "AG"); | |
143 | append_flags_type_flag (type, 1, "IE"); | |
144 | append_flags_type_flag (type, 2, "PRIV"); | |
145 | append_flags_type_flag (type, 3, "AM"); | |
146 | append_flags_type_flag (type, 4, "PEF"); | |
147 | append_flags_type_flag (type, 5, "RED"); | |
148 | append_flags_type_flag (type, 8, "TLE"); | |
149 | append_flags_type_flag (type, 9, "CLE"); | |
150 | append_flags_type_flag (type, 10, "PID0"); | |
151 | append_flags_type_flag (type, 11, "PID1"); | |
152 | sparc64_pstate_type = type; | |
153 | ||
154 | type = init_flags_type ("builtin_type_sparc64_fsr", 8); | |
155 | append_flags_type_flag (type, 0, "NXA"); | |
156 | append_flags_type_flag (type, 1, "DZA"); | |
157 | append_flags_type_flag (type, 2, "UFA"); | |
158 | append_flags_type_flag (type, 3, "OFA"); | |
159 | append_flags_type_flag (type, 4, "NVA"); | |
160 | append_flags_type_flag (type, 5, "NXC"); | |
161 | append_flags_type_flag (type, 6, "DZC"); | |
162 | append_flags_type_flag (type, 7, "UFC"); | |
163 | append_flags_type_flag (type, 8, "OFC"); | |
164 | append_flags_type_flag (type, 9, "NVC"); | |
165 | append_flags_type_flag (type, 22, "NS"); | |
166 | append_flags_type_flag (type, 23, "NXM"); | |
167 | append_flags_type_flag (type, 24, "DZM"); | |
168 | append_flags_type_flag (type, 25, "UFM"); | |
169 | append_flags_type_flag (type, 26, "OFM"); | |
170 | append_flags_type_flag (type, 27, "NVM"); | |
171 | sparc64_fsr_type = type; | |
172 | ||
173 | type = init_flags_type ("builtin_type_sparc64_fprs", 8); | |
174 | append_flags_type_flag (type, 0, "DL"); | |
175 | append_flags_type_flag (type, 1, "DU"); | |
176 | append_flags_type_flag (type, 2, "FEF"); | |
177 | sparc64_fprs_type = type; | |
178 | } | |
8b39fe56 | 179 | |
8b39fe56 MK |
180 | /* Register information. */ |
181 | ||
6707b003 | 182 | static const char *sparc64_register_names[] = |
8b39fe56 | 183 | { |
6707b003 UW |
184 | "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", |
185 | "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
186 | "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
187 | "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
188 | ||
189 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
190 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
191 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
192 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
193 | "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", | |
194 | "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", | |
195 | ||
196 | "pc", "npc", | |
8b39fe56 | 197 | |
6707b003 UW |
198 | /* FIXME: Give "state" a name until we start using register groups. */ |
199 | "state", | |
200 | "fsr", | |
201 | "fprs", | |
202 | "y", | |
8b39fe56 MK |
203 | }; |
204 | ||
205 | /* Total number of registers. */ | |
6707b003 | 206 | #define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names) |
8b39fe56 MK |
207 | |
208 | /* We provide the aliases %d0..%d62 and %q0..%q60 for the floating | |
209 | registers as "psuedo" registers. */ | |
210 | ||
6707b003 | 211 | static const char *sparc64_pseudo_register_names[] = |
8b39fe56 | 212 | { |
6707b003 UW |
213 | "cwp", "pstate", "asi", "ccr", |
214 | ||
215 | "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14", | |
216 | "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30", | |
217 | "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46", | |
218 | "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62", | |
219 | ||
220 | "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28", | |
221 | "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60", | |
8b39fe56 MK |
222 | }; |
223 | ||
224 | /* Total number of pseudo registers. */ | |
6707b003 | 225 | #define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names) |
8b39fe56 MK |
226 | |
227 | /* Return the name of register REGNUM. */ | |
228 | ||
229 | static const char * | |
230 | sparc64_register_name (int regnum) | |
231 | { | |
232 | if (regnum >= 0 && regnum < SPARC64_NUM_REGS) | |
6707b003 | 233 | return sparc64_register_names[regnum]; |
8b39fe56 MK |
234 | |
235 | if (regnum >= SPARC64_NUM_REGS | |
236 | && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) | |
6707b003 | 237 | return sparc64_pseudo_register_names[regnum - SPARC64_NUM_REGS]; |
8b39fe56 MK |
238 | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | /* Return the GDB type object for the "standard" data type of data in | |
243 | register REGNUM. */ | |
244 | ||
245 | static struct type * | |
246 | sparc64_register_type (struct gdbarch *gdbarch, int regnum) | |
247 | { | |
6707b003 UW |
248 | /* Raw registers. */ |
249 | ||
250 | if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM) | |
251 | return builtin_type_void_data_ptr; | |
252 | if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM) | |
253 | return builtin_type_int64; | |
254 | if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM) | |
255 | return builtin_type_float; | |
256 | if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM) | |
257 | return builtin_type_double; | |
258 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) | |
259 | return builtin_type_void_func_ptr; | |
260 | /* This raw register contains the contents of %cwp, %pstate, %asi | |
261 | and %ccr as laid out in a %tstate register. */ | |
262 | if (regnum == SPARC64_STATE_REGNUM) | |
263 | return builtin_type_int64; | |
264 | if (regnum == SPARC64_FSR_REGNUM) | |
265 | return sparc64_fsr_type; | |
266 | if (regnum == SPARC64_FPRS_REGNUM) | |
267 | return sparc64_fprs_type; | |
268 | /* "Although Y is a 64-bit register, its high-order 32 bits are | |
269 | reserved and always read as 0." */ | |
270 | if (regnum == SPARC64_Y_REGNUM) | |
271 | return builtin_type_int64; | |
272 | ||
273 | /* Pseudo registers. */ | |
274 | ||
275 | if (regnum == SPARC64_CWP_REGNUM) | |
276 | return builtin_type_int64; | |
277 | if (regnum == SPARC64_PSTATE_REGNUM) | |
278 | return sparc64_pstate_type; | |
279 | if (regnum == SPARC64_ASI_REGNUM) | |
280 | return builtin_type_int64; | |
281 | if (regnum == SPARC64_CCR_REGNUM) | |
282 | return builtin_type_int64; | |
283 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
284 | return builtin_type_double; | |
285 | if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
286 | return builtin_type_long_double; | |
287 | ||
288 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
8b39fe56 MK |
289 | } |
290 | ||
291 | static void | |
292 | sparc64_pseudo_register_read (struct gdbarch *gdbarch, | |
293 | struct regcache *regcache, | |
e1613aba | 294 | int regnum, gdb_byte *buf) |
8b39fe56 MK |
295 | { |
296 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
297 | ||
298 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
299 | { | |
300 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
301 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba | 302 | regcache_raw_read (regcache, regnum + 1, buf + 4); |
8b39fe56 MK |
303 | } |
304 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
305 | { | |
306 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
307 | regcache_raw_read (regcache, regnum, buf); | |
308 | } | |
309 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
310 | { | |
311 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
312 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba MK |
313 | regcache_raw_read (regcache, regnum + 1, buf + 4); |
314 | regcache_raw_read (regcache, regnum + 2, buf + 8); | |
315 | regcache_raw_read (regcache, regnum + 3, buf + 12); | |
8b39fe56 MK |
316 | } |
317 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
318 | { | |
319 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
320 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba | 321 | regcache_raw_read (regcache, regnum + 1, buf + 8); |
8b39fe56 MK |
322 | } |
323 | else if (regnum == SPARC64_CWP_REGNUM | |
324 | || regnum == SPARC64_PSTATE_REGNUM | |
325 | || regnum == SPARC64_ASI_REGNUM | |
326 | || regnum == SPARC64_CCR_REGNUM) | |
327 | { | |
328 | ULONGEST state; | |
329 | ||
330 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
331 | switch (regnum) | |
332 | { | |
3567a8ea | 333 | case SPARC64_CWP_REGNUM: |
8b39fe56 MK |
334 | state = (state >> 0) & ((1 << 5) - 1); |
335 | break; | |
3567a8ea | 336 | case SPARC64_PSTATE_REGNUM: |
8b39fe56 MK |
337 | state = (state >> 8) & ((1 << 12) - 1); |
338 | break; | |
3567a8ea | 339 | case SPARC64_ASI_REGNUM: |
8b39fe56 MK |
340 | state = (state >> 24) & ((1 << 8) - 1); |
341 | break; | |
3567a8ea | 342 | case SPARC64_CCR_REGNUM: |
8b39fe56 MK |
343 | state = (state >> 32) & ((1 << 8) - 1); |
344 | break; | |
345 | } | |
346 | store_unsigned_integer (buf, 8, state); | |
347 | } | |
348 | } | |
349 | ||
350 | static void | |
351 | sparc64_pseudo_register_write (struct gdbarch *gdbarch, | |
352 | struct regcache *regcache, | |
e1613aba | 353 | int regnum, const gdb_byte *buf) |
8b39fe56 MK |
354 | { |
355 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
356 | ||
357 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
358 | { | |
359 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
360 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba | 361 | regcache_raw_write (regcache, regnum + 1, buf + 4); |
8b39fe56 MK |
362 | } |
363 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
364 | { | |
365 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
366 | regcache_raw_write (regcache, regnum, buf); | |
367 | } | |
368 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
369 | { | |
370 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
371 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba MK |
372 | regcache_raw_write (regcache, regnum + 1, buf + 4); |
373 | regcache_raw_write (regcache, regnum + 2, buf + 8); | |
374 | regcache_raw_write (regcache, regnum + 3, buf + 12); | |
8b39fe56 MK |
375 | } |
376 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
377 | { | |
378 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
379 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba | 380 | regcache_raw_write (regcache, regnum + 1, buf + 8); |
8b39fe56 | 381 | } |
3567a8ea MK |
382 | else if (regnum == SPARC64_CWP_REGNUM |
383 | || regnum == SPARC64_PSTATE_REGNUM | |
384 | || regnum == SPARC64_ASI_REGNUM | |
385 | || regnum == SPARC64_CCR_REGNUM) | |
386 | { | |
387 | ULONGEST state, bits; | |
388 | ||
389 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
390 | bits = extract_unsigned_integer (buf, 8); | |
391 | switch (regnum) | |
392 | { | |
393 | case SPARC64_CWP_REGNUM: | |
394 | state |= ((bits & ((1 << 5) - 1)) << 0); | |
395 | break; | |
396 | case SPARC64_PSTATE_REGNUM: | |
397 | state |= ((bits & ((1 << 12) - 1)) << 8); | |
398 | break; | |
399 | case SPARC64_ASI_REGNUM: | |
400 | state |= ((bits & ((1 << 8) - 1)) << 24); | |
401 | break; | |
402 | case SPARC64_CCR_REGNUM: | |
403 | state |= ((bits & ((1 << 8) - 1)) << 32); | |
404 | break; | |
405 | } | |
406 | regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); | |
407 | } | |
8b39fe56 | 408 | } |
8b39fe56 MK |
409 | \f |
410 | ||
8b39fe56 MK |
411 | /* Return PC of first real instruction of the function starting at |
412 | START_PC. */ | |
413 | ||
414 | static CORE_ADDR | |
415 | sparc64_skip_prologue (CORE_ADDR start_pc) | |
416 | { | |
417 | struct symtab_and_line sal; | |
418 | CORE_ADDR func_start, func_end; | |
386c036b | 419 | struct sparc_frame_cache cache; |
8b39fe56 MK |
420 | |
421 | /* This is the preferred method, find the end of the prologue by | |
422 | using the debugging information. */ | |
423 | if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) | |
424 | { | |
425 | sal = find_pc_line (func_start, 0); | |
426 | ||
427 | if (sal.end < func_end | |
428 | && start_pc <= sal.end) | |
429 | return sal.end; | |
430 | } | |
431 | ||
386c036b | 432 | return sparc_analyze_prologue (start_pc, 0xffffffffffffffffULL, &cache); |
8b39fe56 MK |
433 | } |
434 | ||
435 | /* Normal frames. */ | |
436 | ||
386c036b | 437 | static struct sparc_frame_cache * |
8b39fe56 MK |
438 | sparc64_frame_cache (struct frame_info *next_frame, void **this_cache) |
439 | { | |
386c036b | 440 | return sparc_frame_cache (next_frame, this_cache); |
8b39fe56 MK |
441 | } |
442 | ||
443 | static void | |
444 | sparc64_frame_this_id (struct frame_info *next_frame, void **this_cache, | |
445 | struct frame_id *this_id) | |
446 | { | |
386c036b | 447 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
448 | sparc64_frame_cache (next_frame, this_cache); |
449 | ||
450 | /* This marks the outermost frame. */ | |
451 | if (cache->base == 0) | |
452 | return; | |
453 | ||
454 | (*this_id) = frame_id_build (cache->base, cache->pc); | |
455 | } | |
456 | ||
457 | static void | |
458 | sparc64_frame_prev_register (struct frame_info *next_frame, void **this_cache, | |
459 | int regnum, int *optimizedp, | |
460 | enum lval_type *lvalp, CORE_ADDR *addrp, | |
47ef841b | 461 | int *realnump, gdb_byte *valuep) |
8b39fe56 | 462 | { |
386c036b | 463 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
464 | sparc64_frame_cache (next_frame, this_cache); |
465 | ||
466 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) | |
467 | { | |
468 | *optimizedp = 0; | |
469 | *lvalp = not_lval; | |
470 | *addrp = 0; | |
471 | *realnump = -1; | |
472 | if (valuep) | |
473 | { | |
474 | CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; | |
475 | ||
476 | regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM; | |
477 | pc += frame_unwind_register_unsigned (next_frame, regnum) + 8; | |
478 | store_unsigned_integer (valuep, 8, pc); | |
479 | } | |
480 | return; | |
481 | } | |
482 | ||
f700a364 MK |
483 | /* Handle StackGhost. */ |
484 | { | |
485 | ULONGEST wcookie = sparc_fetch_wcookie (); | |
486 | ||
487 | if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM) | |
488 | { | |
489 | *optimizedp = 0; | |
490 | *lvalp = not_lval; | |
491 | *addrp = 0; | |
492 | *realnump = -1; | |
493 | if (valuep) | |
494 | { | |
495 | CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; | |
496 | ULONGEST i7; | |
497 | ||
498 | /* Read the value in from memory. */ | |
499 | i7 = get_frame_memory_unsigned (next_frame, addr, 8); | |
500 | store_unsigned_integer (valuep, 8, i7 ^ wcookie); | |
501 | } | |
502 | return; | |
503 | } | |
504 | } | |
505 | ||
8b39fe56 MK |
506 | /* The previous frame's `local' and `in' registers have been saved |
507 | in the register save area. */ | |
508 | if (!cache->frameless_p | |
509 | && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) | |
510 | { | |
511 | *optimizedp = 0; | |
512 | *lvalp = lval_memory; | |
5b2d44a0 | 513 | *addrp = cache->base + (regnum - SPARC_L0_REGNUM) * 8; |
8b39fe56 MK |
514 | *realnump = -1; |
515 | if (valuep) | |
516 | { | |
517 | struct gdbarch *gdbarch = get_frame_arch (next_frame); | |
518 | ||
519 | /* Read the value in from memory. */ | |
520 | read_memory (*addrp, valuep, register_size (gdbarch, regnum)); | |
521 | } | |
522 | return; | |
523 | } | |
524 | ||
525 | /* The previous frame's `out' registers are accessable as the | |
526 | current frame's `in' registers. */ | |
527 | if (!cache->frameless_p | |
528 | && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) | |
529 | regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); | |
530 | ||
00b25ff3 AC |
531 | *optimizedp = 0; |
532 | *lvalp = lval_register; | |
533 | *addrp = 0; | |
534 | *realnump = regnum; | |
535 | if (valuep) | |
536 | frame_unwind_register (next_frame, regnum, valuep); | |
8b39fe56 MK |
537 | } |
538 | ||
539 | static const struct frame_unwind sparc64_frame_unwind = | |
540 | { | |
541 | NORMAL_FRAME, | |
542 | sparc64_frame_this_id, | |
543 | sparc64_frame_prev_register | |
544 | }; | |
545 | ||
546 | static const struct frame_unwind * | |
547 | sparc64_frame_sniffer (struct frame_info *next_frame) | |
548 | { | |
549 | return &sparc64_frame_unwind; | |
550 | } | |
551 | \f | |
552 | ||
553 | static CORE_ADDR | |
554 | sparc64_frame_base_address (struct frame_info *next_frame, void **this_cache) | |
555 | { | |
386c036b | 556 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
557 | sparc64_frame_cache (next_frame, this_cache); |
558 | ||
5b2d44a0 | 559 | return cache->base; |
8b39fe56 MK |
560 | } |
561 | ||
562 | static const struct frame_base sparc64_frame_base = | |
563 | { | |
564 | &sparc64_frame_unwind, | |
565 | sparc64_frame_base_address, | |
566 | sparc64_frame_base_address, | |
567 | sparc64_frame_base_address | |
568 | }; | |
8b39fe56 MK |
569 | \f |
570 | /* Check whether TYPE must be 16-byte aligned. */ | |
571 | ||
572 | static int | |
573 | sparc64_16_byte_align_p (struct type *type) | |
574 | { | |
575 | if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16) | |
576 | return 1; | |
577 | ||
578 | if (sparc64_structure_or_union_p (type)) | |
579 | { | |
580 | int i; | |
581 | ||
582 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
583 | { |
584 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
585 | ||
586 | if (sparc64_16_byte_align_p (subtype)) | |
587 | return 1; | |
588 | } | |
8b39fe56 MK |
589 | } |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | /* Store floating fields of element ELEMENT of an "parameter array" | |
595 | that has type TYPE and is stored at BITPOS in VALBUF in the | |
596 | apropriate registers of REGCACHE. This function can be called | |
597 | recursively and therefore handles floating types in addition to | |
598 | structures. */ | |
599 | ||
600 | static void | |
601 | sparc64_store_floating_fields (struct regcache *regcache, struct type *type, | |
e1613aba | 602 | const gdb_byte *valbuf, int element, int bitpos) |
8b39fe56 MK |
603 | { |
604 | gdb_assert (element < 16); | |
605 | ||
606 | if (sparc64_floating_p (type)) | |
607 | { | |
608 | int len = TYPE_LENGTH (type); | |
609 | int regnum; | |
610 | ||
611 | if (len == 16) | |
612 | { | |
613 | gdb_assert (bitpos == 0); | |
614 | gdb_assert ((element % 2) == 0); | |
615 | ||
616 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
617 | regcache_cooked_write (regcache, regnum, valbuf); | |
618 | } | |
619 | else if (len == 8) | |
620 | { | |
621 | gdb_assert (bitpos == 0 || bitpos == 64); | |
622 | ||
623 | regnum = SPARC64_D0_REGNUM + element + bitpos / 64; | |
624 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
625 | } | |
626 | else | |
627 | { | |
628 | gdb_assert (len == 4); | |
629 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128); | |
630 | ||
631 | regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; | |
632 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
633 | } | |
634 | } | |
635 | else if (sparc64_structure_or_union_p (type)) | |
636 | { | |
637 | int i; | |
638 | ||
639 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
640 | { |
641 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
642 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
643 | ||
644 | sparc64_store_floating_fields (regcache, subtype, valbuf, | |
645 | element, subpos); | |
646 | } | |
200cc553 MK |
647 | |
648 | /* GCC has an interesting bug. If TYPE is a structure that has | |
649 | a single `float' member, GCC doesn't treat it as a structure | |
650 | at all, but rather as an ordinary `float' argument. This | |
651 | argument will be stored in %f1, as required by the psABI. | |
652 | However, as a member of a structure the psABI requires it to | |
5154b0cd MK |
653 | be stored in %f0. This bug is present in GCC 3.3.2, but |
654 | probably in older releases to. To appease GCC, if a | |
655 | structure has only a single `float' member, we store its | |
656 | value in %f1 too (we already have stored in %f0). */ | |
200cc553 MK |
657 | if (TYPE_NFIELDS (type) == 1) |
658 | { | |
659 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
660 | ||
661 | if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) | |
662 | regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf); | |
663 | } | |
8b39fe56 MK |
664 | } |
665 | } | |
666 | ||
667 | /* Fetch floating fields from a variable of type TYPE from the | |
668 | appropriate registers for BITPOS in REGCACHE and store it at BITPOS | |
669 | in VALBUF. This function can be called recursively and therefore | |
670 | handles floating types in addition to structures. */ | |
671 | ||
672 | static void | |
673 | sparc64_extract_floating_fields (struct regcache *regcache, struct type *type, | |
e1613aba | 674 | gdb_byte *valbuf, int bitpos) |
8b39fe56 MK |
675 | { |
676 | if (sparc64_floating_p (type)) | |
677 | { | |
678 | int len = TYPE_LENGTH (type); | |
679 | int regnum; | |
680 | ||
681 | if (len == 16) | |
682 | { | |
683 | gdb_assert (bitpos == 0 || bitpos == 128); | |
684 | ||
685 | regnum = SPARC64_Q0_REGNUM + bitpos / 128; | |
686 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
687 | } | |
688 | else if (len == 8) | |
689 | { | |
690 | gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256); | |
691 | ||
692 | regnum = SPARC64_D0_REGNUM + bitpos / 64; | |
693 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
694 | } | |
695 | else | |
696 | { | |
697 | gdb_assert (len == 4); | |
698 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256); | |
699 | ||
700 | regnum = SPARC_F0_REGNUM + bitpos / 32; | |
701 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
702 | } | |
703 | } | |
704 | else if (sparc64_structure_or_union_p (type)) | |
705 | { | |
706 | int i; | |
707 | ||
708 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
709 | { |
710 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
711 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
712 | ||
713 | sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos); | |
714 | } | |
8b39fe56 MK |
715 | } |
716 | } | |
717 | ||
718 | /* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is | |
719 | non-zero) in REGCACHE and on the stack (starting from address SP). */ | |
720 | ||
721 | static CORE_ADDR | |
722 | sparc64_store_arguments (struct regcache *regcache, int nargs, | |
723 | struct value **args, CORE_ADDR sp, | |
724 | int struct_return, CORE_ADDR struct_addr) | |
725 | { | |
726 | /* Number of extended words in the "parameter array". */ | |
727 | int num_elements = 0; | |
728 | int element = 0; | |
729 | int i; | |
730 | ||
731 | /* Take BIAS into account. */ | |
732 | sp += BIAS; | |
733 | ||
734 | /* First we calculate the number of extended words in the "parameter | |
735 | array". While doing so we also convert some of the arguments. */ | |
736 | ||
737 | if (struct_return) | |
738 | num_elements++; | |
739 | ||
740 | for (i = 0; i < nargs; i++) | |
741 | { | |
4991999e | 742 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
743 | int len = TYPE_LENGTH (type); |
744 | ||
745 | if (sparc64_structure_or_union_p (type)) | |
746 | { | |
747 | /* Structure or Union arguments. */ | |
748 | if (len <= 16) | |
749 | { | |
750 | if (num_elements % 2 && sparc64_16_byte_align_p (type)) | |
751 | num_elements++; | |
752 | num_elements += ((len + 7) / 8); | |
753 | } | |
754 | else | |
755 | { | |
756 | /* The psABI says that "Structures or unions larger than | |
757 | sixteen bytes are copied by the caller and passed | |
758 | indirectly; the caller will pass the address of a | |
759 | correctly aligned structure value. This sixty-four | |
760 | bit address will occupy one word in the parameter | |
761 | array, and may be promoted to an %o register like any | |
762 | other pointer value." Allocate memory for these | |
763 | values on the stack. */ | |
764 | sp -= len; | |
765 | ||
766 | /* Use 16-byte alignment for these values. That's | |
767 | always correct, and wasting a few bytes shouldn't be | |
768 | a problem. */ | |
769 | sp &= ~0xf; | |
770 | ||
0fd88904 | 771 | write_memory (sp, value_contents (args[i]), len); |
8b39fe56 MK |
772 | args[i] = value_from_pointer (lookup_pointer_type (type), sp); |
773 | num_elements++; | |
774 | } | |
775 | } | |
776 | else if (sparc64_floating_p (type)) | |
777 | { | |
778 | /* Floating arguments. */ | |
779 | ||
780 | if (len == 16) | |
781 | { | |
782 | /* The psABI says that "Each quad-precision parameter | |
783 | value will be assigned to two extended words in the | |
784 | parameter array. */ | |
785 | num_elements += 2; | |
786 | ||
787 | /* The psABI says that "Long doubles must be | |
788 | quad-aligned, and thus a hole might be introduced | |
789 | into the parameter array to force alignment." Skip | |
790 | an element if necessary. */ | |
791 | if (num_elements % 2) | |
792 | num_elements++; | |
793 | } | |
794 | else | |
795 | num_elements++; | |
796 | } | |
797 | else | |
798 | { | |
799 | /* Integral and pointer arguments. */ | |
800 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
801 | ||
802 | /* The psABI says that "Each argument value of integral type | |
803 | smaller than an extended word will be widened by the | |
804 | caller to an extended word according to the signed-ness | |
805 | of the argument type." */ | |
806 | if (len < 8) | |
807 | args[i] = value_cast (builtin_type_int64, args[i]); | |
808 | num_elements++; | |
809 | } | |
810 | } | |
811 | ||
812 | /* Allocate the "parameter array". */ | |
813 | sp -= num_elements * 8; | |
814 | ||
815 | /* The psABI says that "Every stack frame must be 16-byte aligned." */ | |
816 | sp &= ~0xf; | |
817 | ||
818 | /* Now we store the arguments in to the "paramater array". Some | |
819 | Integer or Pointer arguments and Structure or Union arguments | |
820 | will be passed in %o registers. Some Floating arguments and | |
821 | floating members of structures are passed in floating-point | |
822 | registers. However, for functions with variable arguments, | |
823 | floating arguments are stored in an %0 register, and for | |
824 | functions without a prototype floating arguments are stored in | |
825 | both a floating-point and an %o registers, or a floating-point | |
826 | register and memory. To simplify the logic here we always pass | |
827 | arguments in memory, an %o register, and a floating-point | |
828 | register if appropriate. This should be no problem since the | |
829 | contents of any unused memory or registers in the "parameter | |
830 | array" are undefined. */ | |
831 | ||
832 | if (struct_return) | |
833 | { | |
834 | regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr); | |
835 | element++; | |
836 | } | |
837 | ||
838 | for (i = 0; i < nargs; i++) | |
839 | { | |
e1613aba | 840 | const gdb_byte *valbuf = value_contents (args[i]); |
4991999e | 841 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
842 | int len = TYPE_LENGTH (type); |
843 | int regnum = -1; | |
e1613aba | 844 | gdb_byte buf[16]; |
8b39fe56 MK |
845 | |
846 | if (sparc64_structure_or_union_p (type)) | |
847 | { | |
848 | /* Structure or Union arguments. */ | |
849 | gdb_assert (len <= 16); | |
850 | memset (buf, 0, sizeof (buf)); | |
851 | valbuf = memcpy (buf, valbuf, len); | |
852 | ||
853 | if (element % 2 && sparc64_16_byte_align_p (type)) | |
854 | element++; | |
855 | ||
856 | if (element < 6) | |
857 | { | |
858 | regnum = SPARC_O0_REGNUM + element; | |
859 | if (len > 8 && element < 5) | |
860 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); | |
861 | } | |
862 | ||
863 | if (element < 16) | |
864 | sparc64_store_floating_fields (regcache, type, valbuf, element, 0); | |
865 | } | |
866 | else if (sparc64_floating_p (type)) | |
867 | { | |
868 | /* Floating arguments. */ | |
869 | if (len == 16) | |
870 | { | |
871 | if (element % 2) | |
872 | element++; | |
873 | if (element < 16) | |
874 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
875 | } | |
876 | else if (len == 8) | |
877 | { | |
878 | if (element < 16) | |
879 | regnum = SPARC64_D0_REGNUM + element; | |
880 | } | |
881 | else | |
882 | { | |
883 | /* The psABI says "Each single-precision parameter value | |
884 | will be assigned to one extended word in the | |
885 | parameter array, and right-justified within that | |
886 | word; the left half (even floatregister) is | |
887 | undefined." Even though the psABI says that "the | |
888 | left half is undefined", set it to zero here. */ | |
889 | memset (buf, 0, 4); | |
8ada74e3 MK |
890 | memcpy (buf + 4, valbuf, 4); |
891 | valbuf = buf; | |
8b39fe56 MK |
892 | len = 8; |
893 | if (element < 16) | |
8ada74e3 | 894 | regnum = SPARC64_D0_REGNUM + element; |
8b39fe56 MK |
895 | } |
896 | } | |
897 | else | |
898 | { | |
899 | /* Integral and pointer arguments. */ | |
900 | gdb_assert (len == 8); | |
901 | if (element < 6) | |
902 | regnum = SPARC_O0_REGNUM + element; | |
903 | } | |
904 | ||
905 | if (regnum != -1) | |
906 | { | |
907 | regcache_cooked_write (regcache, regnum, valbuf); | |
908 | ||
909 | /* If we're storing the value in a floating-point register, | |
910 | also store it in the corresponding %0 register(s). */ | |
911 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM) | |
912 | { | |
913 | gdb_assert (element < 6); | |
914 | regnum = SPARC_O0_REGNUM + element; | |
915 | regcache_cooked_write (regcache, regnum, valbuf); | |
916 | } | |
917 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM) | |
918 | { | |
919 | gdb_assert (element < 6); | |
920 | regnum = SPARC_O0_REGNUM + element; | |
921 | regcache_cooked_write (regcache, regnum, valbuf); | |
d47079be | 922 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); |
8b39fe56 MK |
923 | } |
924 | } | |
925 | ||
c4f2d4d7 | 926 | /* Always store the argument in memory. */ |
8b39fe56 MK |
927 | write_memory (sp + element * 8, valbuf, len); |
928 | element += ((len + 7) / 8); | |
929 | } | |
930 | ||
931 | gdb_assert (element == num_elements); | |
932 | ||
933 | /* Take BIAS into account. */ | |
934 | sp -= BIAS; | |
935 | return sp; | |
936 | } | |
937 | ||
938 | static CORE_ADDR | |
7d9b040b | 939 | sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
8b39fe56 MK |
940 | struct regcache *regcache, CORE_ADDR bp_addr, |
941 | int nargs, struct value **args, CORE_ADDR sp, | |
942 | int struct_return, CORE_ADDR struct_addr) | |
943 | { | |
944 | /* Set return address. */ | |
945 | regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8); | |
946 | ||
947 | /* Set up function arguments. */ | |
948 | sp = sparc64_store_arguments (regcache, nargs, args, sp, | |
949 | struct_return, struct_addr); | |
950 | ||
951 | /* Allocate the register save area. */ | |
952 | sp -= 16 * 8; | |
953 | ||
954 | /* Stack should be 16-byte aligned at this point. */ | |
3567a8ea | 955 | gdb_assert ((sp + BIAS) % 16 == 0); |
8b39fe56 MK |
956 | |
957 | /* Finally, update the stack pointer. */ | |
958 | regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); | |
959 | ||
5b2d44a0 | 960 | return sp + BIAS; |
8b39fe56 MK |
961 | } |
962 | \f | |
963 | ||
964 | /* Extract from an array REGBUF containing the (raw) register state, a | |
965 | function return value of TYPE, and copy that into VALBUF. */ | |
966 | ||
967 | static void | |
968 | sparc64_extract_return_value (struct type *type, struct regcache *regcache, | |
e1613aba | 969 | gdb_byte *valbuf) |
8b39fe56 MK |
970 | { |
971 | int len = TYPE_LENGTH (type); | |
e1613aba | 972 | gdb_byte buf[32]; |
8b39fe56 MK |
973 | int i; |
974 | ||
975 | if (sparc64_structure_or_union_p (type)) | |
976 | { | |
977 | /* Structure or Union return values. */ | |
978 | gdb_assert (len <= 32); | |
979 | ||
980 | for (i = 0; i < ((len + 7) / 8); i++) | |
981 | regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
982 | if (TYPE_CODE (type) != TYPE_CODE_UNION) | |
983 | sparc64_extract_floating_fields (regcache, type, buf, 0); | |
984 | memcpy (valbuf, buf, len); | |
985 | } | |
986 | else if (sparc64_floating_p (type)) | |
987 | { | |
988 | /* Floating return values. */ | |
989 | for (i = 0; i < len / 4; i++) | |
990 | regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
991 | memcpy (valbuf, buf, len); | |
992 | } | |
4bd87714 JB |
993 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
994 | { | |
995 | /* Small arrays are returned the same way as small structures. */ | |
996 | gdb_assert (len <= 32); | |
997 | ||
998 | for (i = 0; i < ((len + 7) / 8); i++) | |
999 | regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
1000 | memcpy (valbuf, buf, len); | |
1001 | } | |
8b39fe56 MK |
1002 | else |
1003 | { | |
1004 | /* Integral and pointer return values. */ | |
1005 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1006 | ||
1007 | /* Just stripping off any unused bytes should preserve the | |
1008 | signed-ness just fine. */ | |
1009 | regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); | |
1010 | memcpy (valbuf, buf + 8 - len, len); | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | /* Write into the appropriate registers a function return value stored | |
1015 | in VALBUF of type TYPE. */ | |
1016 | ||
1017 | static void | |
1018 | sparc64_store_return_value (struct type *type, struct regcache *regcache, | |
e1613aba | 1019 | const gdb_byte *valbuf) |
8b39fe56 MK |
1020 | { |
1021 | int len = TYPE_LENGTH (type); | |
e1613aba | 1022 | gdb_byte buf[16]; |
8b39fe56 MK |
1023 | int i; |
1024 | ||
1025 | if (sparc64_structure_or_union_p (type)) | |
1026 | { | |
1027 | /* Structure or Union return values. */ | |
1028 | gdb_assert (len <= 32); | |
1029 | ||
1030 | /* Simplify matters by storing the complete value (including | |
1031 | floating members) into %o0 and %o1. Floating members are | |
1032 | also store in the appropriate floating-point registers. */ | |
1033 | memset (buf, 0, sizeof (buf)); | |
1034 | memcpy (buf, valbuf, len); | |
1035 | for (i = 0; i < ((len + 7) / 8); i++) | |
60af1db2 | 1036 | regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); |
8b39fe56 MK |
1037 | if (TYPE_CODE (type) != TYPE_CODE_UNION) |
1038 | sparc64_store_floating_fields (regcache, type, buf, 0, 0); | |
1039 | } | |
1040 | else if (sparc64_floating_p (type)) | |
1041 | { | |
1042 | /* Floating return values. */ | |
1043 | memcpy (buf, valbuf, len); | |
1044 | for (i = 0; i < len / 4; i++) | |
1045 | regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
1046 | } | |
4bd87714 JB |
1047 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
1048 | { | |
1049 | /* Small arrays are returned the same way as small structures. */ | |
1050 | gdb_assert (len <= 32); | |
1051 | ||
1052 | memset (buf, 0, sizeof (buf)); | |
1053 | memcpy (buf, valbuf, len); | |
1054 | for (i = 0; i < ((len + 7) / 8); i++) | |
1055 | regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
1056 | } | |
8b39fe56 MK |
1057 | else |
1058 | { | |
1059 | /* Integral and pointer return values. */ | |
1060 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1061 | ||
1062 | /* ??? Do we need to do any sign-extension here? */ | |
1063 | memset (buf, 0, 8); | |
1064 | memcpy (buf + 8 - len, valbuf, len); | |
1065 | regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); | |
1066 | } | |
1067 | } | |
1068 | ||
60af1db2 MK |
1069 | static enum return_value_convention |
1070 | sparc64_return_value (struct gdbarch *gdbarch, struct type *type, | |
e1613aba MK |
1071 | struct regcache *regcache, gdb_byte *readbuf, |
1072 | const gdb_byte *writebuf) | |
8b39fe56 | 1073 | { |
60af1db2 MK |
1074 | if (TYPE_LENGTH (type) > 32) |
1075 | return RETURN_VALUE_STRUCT_CONVENTION; | |
1076 | ||
1077 | if (readbuf) | |
1078 | sparc64_extract_return_value (type, regcache, readbuf); | |
1079 | if (writebuf) | |
1080 | sparc64_store_return_value (type, regcache, writebuf); | |
1081 | ||
1082 | return RETURN_VALUE_REGISTER_CONVENTION; | |
8b39fe56 | 1083 | } |
8b39fe56 | 1084 | \f |
8b39fe56 | 1085 | |
02a71ae8 MK |
1086 | static void |
1087 | sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, | |
aff37fc1 DM |
1088 | struct dwarf2_frame_state_reg *reg, |
1089 | struct frame_info *next_frame) | |
02a71ae8 MK |
1090 | { |
1091 | switch (regnum) | |
1092 | { | |
1093 | case SPARC_G0_REGNUM: | |
1094 | /* Since %g0 is always zero, there is no point in saving it, and | |
1095 | people will be inclined omit it from the CFI. Make sure we | |
1096 | don't warn about that. */ | |
1097 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; | |
1098 | break; | |
1099 | case SPARC_SP_REGNUM: | |
1100 | reg->how = DWARF2_FRAME_REG_CFA; | |
1101 | break; | |
1102 | case SPARC64_PC_REGNUM: | |
1103 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; | |
1104 | reg->loc.offset = 8; | |
1105 | break; | |
1106 | case SPARC64_NPC_REGNUM: | |
1107 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; | |
1108 | reg->loc.offset = 12; | |
1109 | break; | |
1110 | } | |
1111 | } | |
1112 | ||
8b39fe56 | 1113 | void |
386c036b | 1114 | sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
8b39fe56 | 1115 | { |
386c036b | 1116 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
8b39fe56 | 1117 | |
386c036b MK |
1118 | tdep->pc_regnum = SPARC64_PC_REGNUM; |
1119 | tdep->npc_regnum = SPARC64_NPC_REGNUM; | |
8b39fe56 | 1120 | |
386c036b | 1121 | /* This is what all the fuss is about. */ |
8b39fe56 MK |
1122 | set_gdbarch_long_bit (gdbarch, 64); |
1123 | set_gdbarch_long_long_bit (gdbarch, 64); | |
1124 | set_gdbarch_ptr_bit (gdbarch, 64); | |
8b39fe56 MK |
1125 | |
1126 | set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS); | |
1127 | set_gdbarch_register_name (gdbarch, sparc64_register_name); | |
1128 | set_gdbarch_register_type (gdbarch, sparc64_register_type); | |
1129 | set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS); | |
1130 | set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read); | |
1131 | set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write); | |
1132 | ||
1133 | /* Register numbers of various important registers. */ | |
8b39fe56 | 1134 | set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */ |
8b39fe56 MK |
1135 | |
1136 | /* Call dummy code. */ | |
386c036b MK |
1137 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
1138 | set_gdbarch_push_dummy_code (gdbarch, NULL); | |
8b39fe56 MK |
1139 | set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call); |
1140 | ||
60af1db2 | 1141 | set_gdbarch_return_value (gdbarch, sparc64_return_value); |
386c036b MK |
1142 | set_gdbarch_stabs_argument_has_addr |
1143 | (gdbarch, default_stabs_argument_has_addr); | |
8b39fe56 MK |
1144 | |
1145 | set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); | |
1146 | ||
02a71ae8 MK |
1147 | /* Hook in the DWARF CFI frame unwinder. */ |
1148 | dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg); | |
1149 | /* FIXME: kettenis/20050423: Don't enable the unwinder until the | |
1150 | StackGhost issues have been resolved. */ | |
1151 | ||
386c036b | 1152 | frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer); |
8b39fe56 | 1153 | frame_base_set_default (gdbarch, &sparc64_frame_base); |
386c036b MK |
1154 | } |
1155 | \f | |
8b39fe56 | 1156 | |
386c036b | 1157 | /* Helper functions for dealing with register sets. */ |
8b39fe56 | 1158 | |
386c036b MK |
1159 | #define TSTATE_CWP 0x000000000000001fULL |
1160 | #define TSTATE_ICC 0x0000000f00000000ULL | |
1161 | #define TSTATE_XCC 0x000000f000000000ULL | |
8b39fe56 | 1162 | |
386c036b MK |
1163 | #define PSR_S 0x00000080 |
1164 | #define PSR_ICC 0x00f00000 | |
1165 | #define PSR_VERS 0x0f000000 | |
1166 | #define PSR_IMPL 0xf0000000 | |
1167 | #define PSR_V8PLUS 0xff000000 | |
1168 | #define PSR_XCC 0x000f0000 | |
8b39fe56 | 1169 | |
3567a8ea | 1170 | void |
386c036b MK |
1171 | sparc64_supply_gregset (const struct sparc_gregset *gregset, |
1172 | struct regcache *regcache, | |
1173 | int regnum, const void *gregs) | |
8b39fe56 | 1174 | { |
386c036b | 1175 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
e1613aba | 1176 | const gdb_byte *regs = gregs; |
8b39fe56 MK |
1177 | int i; |
1178 | ||
386c036b | 1179 | if (sparc32) |
8b39fe56 | 1180 | { |
386c036b MK |
1181 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1182 | { | |
1183 | int offset = gregset->r_tstate_offset; | |
1184 | ULONGEST tstate, psr; | |
e1613aba | 1185 | gdb_byte buf[4]; |
386c036b MK |
1186 | |
1187 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1188 | psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12) | |
1189 | | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS); | |
1190 | store_unsigned_integer (buf, 4, psr); | |
1191 | regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf); | |
1192 | } | |
1193 | ||
1194 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) | |
1195 | regcache_raw_supply (regcache, SPARC32_PC_REGNUM, | |
1196 | regs + gregset->r_pc_offset + 4); | |
1197 | ||
1198 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1199 | regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, | |
1200 | regs + gregset->r_npc_offset + 4); | |
8b39fe56 | 1201 | |
386c036b | 1202 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
8b39fe56 | 1203 | { |
386c036b MK |
1204 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1205 | regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1206 | } |
1207 | } | |
1208 | else | |
1209 | { | |
386c036b MK |
1210 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1211 | regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, | |
1212 | regs + gregset->r_tstate_offset); | |
8b39fe56 | 1213 | |
386c036b MK |
1214 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
1215 | regcache_raw_supply (regcache, SPARC64_PC_REGNUM, | |
1216 | regs + gregset->r_pc_offset); | |
1217 | ||
1218 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) | |
1219 | regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, | |
1220 | regs + gregset->r_npc_offset); | |
1221 | ||
1222 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) | |
3567a8ea | 1223 | { |
e1613aba | 1224 | gdb_byte buf[8]; |
386c036b MK |
1225 | |
1226 | memset (buf, 0, 8); | |
1227 | memcpy (buf + 8 - gregset->r_y_size, | |
1228 | regs + gregset->r_y_offset, gregset->r_y_size); | |
1229 | regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf); | |
3567a8ea | 1230 | } |
8b39fe56 | 1231 | |
386c036b MK |
1232 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
1233 | && gregset->r_fprs_offset != -1) | |
1234 | regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM, | |
1235 | regs + gregset->r_fprs_offset); | |
1236 | } | |
1237 | ||
1238 | if (regnum == SPARC_G0_REGNUM || regnum == -1) | |
1239 | regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL); | |
1240 | ||
1241 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1242 | { | |
1243 | int offset = gregset->r_g1_offset; | |
1244 | ||
1245 | if (sparc32) | |
1246 | offset += 4; | |
1247 | ||
1248 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
8b39fe56 | 1249 | { |
3567a8ea | 1250 | if (regnum == i || regnum == -1) |
386c036b MK |
1251 | regcache_raw_supply (regcache, i, regs + offset); |
1252 | offset += 8; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1257 | { | |
1258 | /* Not all of the register set variants include Locals and | |
1259 | Inputs. For those that don't, we read them off the stack. */ | |
1260 | if (gregset->r_l0_offset == -1) | |
1261 | { | |
1262 | ULONGEST sp; | |
1263 | ||
1264 | regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp); | |
1265 | sparc_supply_rwindow (regcache, sp, regnum); | |
1266 | } | |
1267 | else | |
1268 | { | |
1269 | int offset = gregset->r_l0_offset; | |
1270 | ||
1271 | if (sparc32) | |
1272 | offset += 4; | |
1273 | ||
1274 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1275 | { |
386c036b MK |
1276 | if (regnum == i || regnum == -1) |
1277 | regcache_raw_supply (regcache, i, regs + offset); | |
1278 | offset += 8; | |
3567a8ea | 1279 | } |
8b39fe56 MK |
1280 | } |
1281 | } | |
1282 | } | |
1283 | ||
1284 | void | |
386c036b MK |
1285 | sparc64_collect_gregset (const struct sparc_gregset *gregset, |
1286 | const struct regcache *regcache, | |
1287 | int regnum, void *gregs) | |
8b39fe56 | 1288 | { |
386c036b | 1289 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
e1613aba | 1290 | gdb_byte *regs = gregs; |
3567a8ea MK |
1291 | int i; |
1292 | ||
386c036b | 1293 | if (sparc32) |
8b39fe56 | 1294 | { |
386c036b MK |
1295 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1296 | { | |
1297 | int offset = gregset->r_tstate_offset; | |
1298 | ULONGEST tstate, psr; | |
e1613aba | 1299 | gdb_byte buf[8]; |
386c036b MK |
1300 | |
1301 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1302 | regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf); | |
1303 | psr = extract_unsigned_integer (buf, 4); | |
1304 | tstate |= (psr & PSR_ICC) << 12; | |
1305 | if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS) | |
1306 | tstate |= (psr & PSR_XCC) << 20; | |
1307 | store_unsigned_integer (buf, 8, tstate); | |
1308 | memcpy (regs + offset, buf, 8); | |
1309 | } | |
8b39fe56 | 1310 | |
386c036b MK |
1311 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
1312 | regcache_raw_collect (regcache, SPARC32_PC_REGNUM, | |
1313 | regs + gregset->r_pc_offset + 4); | |
1314 | ||
1315 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1316 | regcache_raw_collect (regcache, SPARC32_NPC_REGNUM, | |
1317 | regs + gregset->r_npc_offset + 4); | |
1318 | ||
1319 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) | |
8b39fe56 | 1320 | { |
386c036b MK |
1321 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1322 | regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1323 | } |
1324 | } | |
1325 | else | |
1326 | { | |
386c036b MK |
1327 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1328 | regcache_raw_collect (regcache, SPARC64_STATE_REGNUM, | |
1329 | regs + gregset->r_tstate_offset); | |
1330 | ||
1331 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) | |
1332 | regcache_raw_collect (regcache, SPARC64_PC_REGNUM, | |
1333 | regs + gregset->r_pc_offset); | |
3567a8ea | 1334 | |
386c036b MK |
1335 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
1336 | regcache_raw_collect (regcache, SPARC64_NPC_REGNUM, | |
1337 | regs + gregset->r_npc_offset); | |
3567a8ea | 1338 | |
386c036b | 1339 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
3567a8ea | 1340 | { |
e1613aba | 1341 | gdb_byte buf[8]; |
386c036b MK |
1342 | |
1343 | regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf); | |
1344 | memcpy (regs + gregset->r_y_offset, | |
1345 | buf + 8 - gregset->r_y_size, gregset->r_y_size); | |
1346 | } | |
1347 | ||
1348 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) | |
1349 | && gregset->r_fprs_offset != -1) | |
1350 | regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM, | |
1351 | regs + gregset->r_fprs_offset); | |
1352 | ||
1353 | } | |
1354 | ||
1355 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1356 | { | |
1357 | int offset = gregset->r_g1_offset; | |
1358 | ||
1359 | if (sparc32) | |
1360 | offset += 4; | |
1361 | ||
1362 | /* %g0 is always zero. */ | |
1363 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
1364 | { | |
1365 | if (regnum == i || regnum == -1) | |
1366 | regcache_raw_collect (regcache, i, regs + offset); | |
1367 | offset += 8; | |
1368 | } | |
1369 | } | |
1370 | ||
1371 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1372 | { | |
1373 | /* Not all of the register set variants include Locals and | |
1374 | Inputs. For those that don't, we read them off the stack. */ | |
1375 | if (gregset->r_l0_offset != -1) | |
1376 | { | |
1377 | int offset = gregset->r_l0_offset; | |
1378 | ||
1379 | if (sparc32) | |
1380 | offset += 4; | |
1381 | ||
1382 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1383 | { |
386c036b MK |
1384 | if (regnum == i || regnum == -1) |
1385 | regcache_raw_collect (regcache, i, regs + offset); | |
1386 | offset += 8; | |
3567a8ea MK |
1387 | } |
1388 | } | |
8b39fe56 MK |
1389 | } |
1390 | } | |
8b39fe56 | 1391 | |
386c036b MK |
1392 | void |
1393 | sparc64_supply_fpregset (struct regcache *regcache, | |
1394 | int regnum, const void *fpregs) | |
1395 | { | |
1396 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); | |
e1613aba | 1397 | const gdb_byte *regs = fpregs; |
386c036b MK |
1398 | int i; |
1399 | ||
1400 | for (i = 0; i < 32; i++) | |
1401 | { | |
1402 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1403 | regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1404 | } | |
1405 | ||
1406 | if (sparc32) | |
1407 | { | |
1408 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1409 | regcache_raw_supply (regcache, SPARC32_FSR_REGNUM, | |
1410 | regs + (32 * 4) + (16 * 8) + 4); | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | for (i = 0; i < 16; i++) | |
1415 | { | |
1416 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1417 | regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i, | |
1418 | regs + (32 * 4) + (i * 8)); | |
1419 | } | |
1420 | ||
1421 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1422 | regcache_raw_supply (regcache, SPARC64_FSR_REGNUM, | |
1423 | regs + (32 * 4) + (16 * 8)); | |
1424 | } | |
1425 | } | |
8b39fe56 MK |
1426 | |
1427 | void | |
386c036b MK |
1428 | sparc64_collect_fpregset (const struct regcache *regcache, |
1429 | int regnum, void *fpregs) | |
8b39fe56 | 1430 | { |
386c036b | 1431 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
e1613aba | 1432 | gdb_byte *regs = fpregs; |
386c036b MK |
1433 | int i; |
1434 | ||
1435 | for (i = 0; i < 32; i++) | |
1436 | { | |
1437 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1438 | regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1439 | } | |
1440 | ||
1441 | if (sparc32) | |
1442 | { | |
1443 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1444 | regcache_raw_collect (regcache, SPARC32_FSR_REGNUM, | |
1445 | regs + (32 * 4) + (16 * 8) + 4); | |
1446 | } | |
1447 | else | |
1448 | { | |
1449 | for (i = 0; i < 16; i++) | |
1450 | { | |
1451 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1452 | regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i, | |
1453 | regs + (32 * 4) + (i * 8)); | |
1454 | } | |
1455 | ||
1456 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1457 | regcache_raw_collect (regcache, SPARC64_FSR_REGNUM, | |
1458 | regs + (32 * 4) + (16 * 8)); | |
1459 | } | |
8b39fe56 | 1460 | } |
fd936806 MK |
1461 | |
1462 | ||
1463 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
1464 | void _initialize_sparc64_tdep (void); | |
1465 | ||
1466 | void | |
1467 | _initialize_sparc64_tdep (void) | |
1468 | { | |
1469 | /* Initialize the UltraSPARC-specific register types. */ | |
1470 | sparc64_init_types(); | |
1471 | } |