Commit | Line | Data |
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8b39fe56 MK |
1 | /* Target-dependent code for UltraSPARC. |
2 | ||
9b254dd1 DJ |
3 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
8b39fe56 MK |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
8b39fe56 MK |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
8b39fe56 MK |
20 | |
21 | #include "defs.h" | |
22 | #include "arch-utils.h" | |
02a71ae8 | 23 | #include "dwarf2-frame.h" |
8b39fe56 MK |
24 | #include "floatformat.h" |
25 | #include "frame.h" | |
26 | #include "frame-base.h" | |
27 | #include "frame-unwind.h" | |
28 | #include "gdbcore.h" | |
29 | #include "gdbtypes.h" | |
386c036b MK |
30 | #include "inferior.h" |
31 | #include "symtab.h" | |
32 | #include "objfiles.h" | |
8b39fe56 MK |
33 | #include "osabi.h" |
34 | #include "regcache.h" | |
35 | #include "target.h" | |
36 | #include "value.h" | |
37 | ||
38 | #include "gdb_assert.h" | |
39 | #include "gdb_string.h" | |
40 | ||
41 | #include "sparc64-tdep.h" | |
42 | ||
43 | /* This file implements the The SPARC 64-bit ABI as defined by the | |
44 | section "Low-Level System Information" of the SPARC Compliance | |
45 | Definition (SCD) 2.4.1, which is the 64-bit System V psABI for | |
46 | SPARC. */ | |
47 | ||
48 | /* Please use the sparc32_-prefix for 32-bit specific code, the | |
49 | sparc64_-prefix for 64-bit specific code and the sparc_-prefix for | |
50 | code can handle both. */ | |
8b39fe56 MK |
51 | \f |
52 | /* The functions on this page are intended to be used to classify | |
53 | function arguments. */ | |
54 | ||
8b39fe56 MK |
55 | /* Check whether TYPE is "Integral or Pointer". */ |
56 | ||
57 | static int | |
58 | sparc64_integral_or_pointer_p (const struct type *type) | |
59 | { | |
60 | switch (TYPE_CODE (type)) | |
61 | { | |
62 | case TYPE_CODE_INT: | |
63 | case TYPE_CODE_BOOL: | |
64 | case TYPE_CODE_CHAR: | |
65 | case TYPE_CODE_ENUM: | |
66 | case TYPE_CODE_RANGE: | |
67 | { | |
68 | int len = TYPE_LENGTH (type); | |
69 | gdb_assert (len == 1 || len == 2 || len == 4 || len == 8); | |
70 | } | |
71 | return 1; | |
72 | case TYPE_CODE_PTR: | |
73 | case TYPE_CODE_REF: | |
74 | { | |
75 | int len = TYPE_LENGTH (type); | |
76 | gdb_assert (len == 8); | |
77 | } | |
78 | return 1; | |
79 | default: | |
80 | break; | |
81 | } | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
86 | /* Check whether TYPE is "Floating". */ | |
87 | ||
88 | static int | |
89 | sparc64_floating_p (const struct type *type) | |
90 | { | |
91 | switch (TYPE_CODE (type)) | |
92 | { | |
93 | case TYPE_CODE_FLT: | |
94 | { | |
95 | int len = TYPE_LENGTH (type); | |
96 | gdb_assert (len == 4 || len == 8 || len == 16); | |
97 | } | |
98 | return 1; | |
99 | default: | |
100 | break; | |
101 | } | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | /* Check whether TYPE is "Structure or Union". */ | |
107 | ||
108 | static int | |
109 | sparc64_structure_or_union_p (const struct type *type) | |
110 | { | |
111 | switch (TYPE_CODE (type)) | |
112 | { | |
113 | case TYPE_CODE_STRUCT: | |
114 | case TYPE_CODE_UNION: | |
115 | return 1; | |
116 | default: | |
117 | break; | |
118 | } | |
119 | ||
120 | return 0; | |
121 | } | |
fd936806 MK |
122 | \f |
123 | ||
124 | /* Type for %pstate. */ | |
125 | struct type *sparc64_pstate_type; | |
126 | ||
127 | /* Type for %fsr. */ | |
128 | struct type *sparc64_fsr_type; | |
129 | ||
130 | /* Type for %fprs. */ | |
131 | struct type *sparc64_fprs_type; | |
132 | ||
133 | /* Construct types for ISA-specific registers. */ | |
134 | ||
135 | static void | |
136 | sparc64_init_types (void) | |
137 | { | |
138 | struct type *type; | |
139 | ||
140 | type = init_flags_type ("builtin_type_sparc64_pstate", 8); | |
141 | append_flags_type_flag (type, 0, "AG"); | |
142 | append_flags_type_flag (type, 1, "IE"); | |
143 | append_flags_type_flag (type, 2, "PRIV"); | |
144 | append_flags_type_flag (type, 3, "AM"); | |
145 | append_flags_type_flag (type, 4, "PEF"); | |
146 | append_flags_type_flag (type, 5, "RED"); | |
147 | append_flags_type_flag (type, 8, "TLE"); | |
148 | append_flags_type_flag (type, 9, "CLE"); | |
149 | append_flags_type_flag (type, 10, "PID0"); | |
150 | append_flags_type_flag (type, 11, "PID1"); | |
151 | sparc64_pstate_type = type; | |
152 | ||
153 | type = init_flags_type ("builtin_type_sparc64_fsr", 8); | |
154 | append_flags_type_flag (type, 0, "NXA"); | |
155 | append_flags_type_flag (type, 1, "DZA"); | |
156 | append_flags_type_flag (type, 2, "UFA"); | |
157 | append_flags_type_flag (type, 3, "OFA"); | |
158 | append_flags_type_flag (type, 4, "NVA"); | |
159 | append_flags_type_flag (type, 5, "NXC"); | |
160 | append_flags_type_flag (type, 6, "DZC"); | |
161 | append_flags_type_flag (type, 7, "UFC"); | |
162 | append_flags_type_flag (type, 8, "OFC"); | |
163 | append_flags_type_flag (type, 9, "NVC"); | |
164 | append_flags_type_flag (type, 22, "NS"); | |
165 | append_flags_type_flag (type, 23, "NXM"); | |
166 | append_flags_type_flag (type, 24, "DZM"); | |
167 | append_flags_type_flag (type, 25, "UFM"); | |
168 | append_flags_type_flag (type, 26, "OFM"); | |
169 | append_flags_type_flag (type, 27, "NVM"); | |
170 | sparc64_fsr_type = type; | |
171 | ||
172 | type = init_flags_type ("builtin_type_sparc64_fprs", 8); | |
173 | append_flags_type_flag (type, 0, "DL"); | |
174 | append_flags_type_flag (type, 1, "DU"); | |
175 | append_flags_type_flag (type, 2, "FEF"); | |
176 | sparc64_fprs_type = type; | |
177 | } | |
8b39fe56 | 178 | |
8b39fe56 MK |
179 | /* Register information. */ |
180 | ||
6707b003 | 181 | static const char *sparc64_register_names[] = |
8b39fe56 | 182 | { |
6707b003 UW |
183 | "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", |
184 | "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
185 | "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
186 | "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
187 | ||
188 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
189 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
190 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
191 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
192 | "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", | |
193 | "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", | |
194 | ||
195 | "pc", "npc", | |
8b39fe56 | 196 | |
6707b003 UW |
197 | /* FIXME: Give "state" a name until we start using register groups. */ |
198 | "state", | |
199 | "fsr", | |
200 | "fprs", | |
201 | "y", | |
8b39fe56 MK |
202 | }; |
203 | ||
204 | /* Total number of registers. */ | |
6707b003 | 205 | #define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names) |
8b39fe56 MK |
206 | |
207 | /* We provide the aliases %d0..%d62 and %q0..%q60 for the floating | |
208 | registers as "psuedo" registers. */ | |
209 | ||
6707b003 | 210 | static const char *sparc64_pseudo_register_names[] = |
8b39fe56 | 211 | { |
6707b003 UW |
212 | "cwp", "pstate", "asi", "ccr", |
213 | ||
214 | "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14", | |
215 | "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30", | |
216 | "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46", | |
217 | "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62", | |
218 | ||
219 | "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28", | |
220 | "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60", | |
8b39fe56 MK |
221 | }; |
222 | ||
223 | /* Total number of pseudo registers. */ | |
6707b003 | 224 | #define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names) |
8b39fe56 MK |
225 | |
226 | /* Return the name of register REGNUM. */ | |
227 | ||
228 | static const char * | |
d93859e2 | 229 | sparc64_register_name (struct gdbarch *gdbarch, int regnum) |
8b39fe56 MK |
230 | { |
231 | if (regnum >= 0 && regnum < SPARC64_NUM_REGS) | |
6707b003 | 232 | return sparc64_register_names[regnum]; |
8b39fe56 MK |
233 | |
234 | if (regnum >= SPARC64_NUM_REGS | |
235 | && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) | |
6707b003 | 236 | return sparc64_pseudo_register_names[regnum - SPARC64_NUM_REGS]; |
8b39fe56 MK |
237 | |
238 | return NULL; | |
239 | } | |
240 | ||
241 | /* Return the GDB type object for the "standard" data type of data in | |
242 | register REGNUM. */ | |
243 | ||
244 | static struct type * | |
245 | sparc64_register_type (struct gdbarch *gdbarch, int regnum) | |
246 | { | |
6707b003 UW |
247 | /* Raw registers. */ |
248 | ||
249 | if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM) | |
250 | return builtin_type_void_data_ptr; | |
251 | if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM) | |
252 | return builtin_type_int64; | |
253 | if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM) | |
254 | return builtin_type_float; | |
255 | if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM) | |
256 | return builtin_type_double; | |
257 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) | |
258 | return builtin_type_void_func_ptr; | |
259 | /* This raw register contains the contents of %cwp, %pstate, %asi | |
260 | and %ccr as laid out in a %tstate register. */ | |
261 | if (regnum == SPARC64_STATE_REGNUM) | |
262 | return builtin_type_int64; | |
263 | if (regnum == SPARC64_FSR_REGNUM) | |
264 | return sparc64_fsr_type; | |
265 | if (regnum == SPARC64_FPRS_REGNUM) | |
266 | return sparc64_fprs_type; | |
267 | /* "Although Y is a 64-bit register, its high-order 32 bits are | |
268 | reserved and always read as 0." */ | |
269 | if (regnum == SPARC64_Y_REGNUM) | |
270 | return builtin_type_int64; | |
271 | ||
272 | /* Pseudo registers. */ | |
273 | ||
274 | if (regnum == SPARC64_CWP_REGNUM) | |
275 | return builtin_type_int64; | |
276 | if (regnum == SPARC64_PSTATE_REGNUM) | |
277 | return sparc64_pstate_type; | |
278 | if (regnum == SPARC64_ASI_REGNUM) | |
279 | return builtin_type_int64; | |
280 | if (regnum == SPARC64_CCR_REGNUM) | |
281 | return builtin_type_int64; | |
282 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
283 | return builtin_type_double; | |
284 | if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
285 | return builtin_type_long_double; | |
286 | ||
287 | internal_error (__FILE__, __LINE__, _("invalid regnum")); | |
8b39fe56 MK |
288 | } |
289 | ||
290 | static void | |
291 | sparc64_pseudo_register_read (struct gdbarch *gdbarch, | |
292 | struct regcache *regcache, | |
e1613aba | 293 | int regnum, gdb_byte *buf) |
8b39fe56 MK |
294 | { |
295 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
296 | ||
297 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
298 | { | |
299 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
300 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba | 301 | regcache_raw_read (regcache, regnum + 1, buf + 4); |
8b39fe56 MK |
302 | } |
303 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
304 | { | |
305 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
306 | regcache_raw_read (regcache, regnum, buf); | |
307 | } | |
308 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
309 | { | |
310 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
311 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba MK |
312 | regcache_raw_read (regcache, regnum + 1, buf + 4); |
313 | regcache_raw_read (regcache, regnum + 2, buf + 8); | |
314 | regcache_raw_read (regcache, regnum + 3, buf + 12); | |
8b39fe56 MK |
315 | } |
316 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
317 | { | |
318 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
319 | regcache_raw_read (regcache, regnum, buf); | |
e1613aba | 320 | regcache_raw_read (regcache, regnum + 1, buf + 8); |
8b39fe56 MK |
321 | } |
322 | else if (regnum == SPARC64_CWP_REGNUM | |
323 | || regnum == SPARC64_PSTATE_REGNUM | |
324 | || regnum == SPARC64_ASI_REGNUM | |
325 | || regnum == SPARC64_CCR_REGNUM) | |
326 | { | |
327 | ULONGEST state; | |
328 | ||
329 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
330 | switch (regnum) | |
331 | { | |
3567a8ea | 332 | case SPARC64_CWP_REGNUM: |
8b39fe56 MK |
333 | state = (state >> 0) & ((1 << 5) - 1); |
334 | break; | |
3567a8ea | 335 | case SPARC64_PSTATE_REGNUM: |
8b39fe56 MK |
336 | state = (state >> 8) & ((1 << 12) - 1); |
337 | break; | |
3567a8ea | 338 | case SPARC64_ASI_REGNUM: |
8b39fe56 MK |
339 | state = (state >> 24) & ((1 << 8) - 1); |
340 | break; | |
3567a8ea | 341 | case SPARC64_CCR_REGNUM: |
8b39fe56 MK |
342 | state = (state >> 32) & ((1 << 8) - 1); |
343 | break; | |
344 | } | |
345 | store_unsigned_integer (buf, 8, state); | |
346 | } | |
347 | } | |
348 | ||
349 | static void | |
350 | sparc64_pseudo_register_write (struct gdbarch *gdbarch, | |
351 | struct regcache *regcache, | |
e1613aba | 352 | int regnum, const gdb_byte *buf) |
8b39fe56 MK |
353 | { |
354 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
355 | ||
356 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
357 | { | |
358 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
359 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba | 360 | regcache_raw_write (regcache, regnum + 1, buf + 4); |
8b39fe56 MK |
361 | } |
362 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
363 | { | |
364 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
365 | regcache_raw_write (regcache, regnum, buf); | |
366 | } | |
367 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
368 | { | |
369 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
370 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba MK |
371 | regcache_raw_write (regcache, regnum + 1, buf + 4); |
372 | regcache_raw_write (regcache, regnum + 2, buf + 8); | |
373 | regcache_raw_write (regcache, regnum + 3, buf + 12); | |
8b39fe56 MK |
374 | } |
375 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
376 | { | |
377 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
378 | regcache_raw_write (regcache, regnum, buf); | |
e1613aba | 379 | regcache_raw_write (regcache, regnum + 1, buf + 8); |
8b39fe56 | 380 | } |
3567a8ea MK |
381 | else if (regnum == SPARC64_CWP_REGNUM |
382 | || regnum == SPARC64_PSTATE_REGNUM | |
383 | || regnum == SPARC64_ASI_REGNUM | |
384 | || regnum == SPARC64_CCR_REGNUM) | |
385 | { | |
386 | ULONGEST state, bits; | |
387 | ||
388 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
389 | bits = extract_unsigned_integer (buf, 8); | |
390 | switch (regnum) | |
391 | { | |
392 | case SPARC64_CWP_REGNUM: | |
393 | state |= ((bits & ((1 << 5) - 1)) << 0); | |
394 | break; | |
395 | case SPARC64_PSTATE_REGNUM: | |
396 | state |= ((bits & ((1 << 12) - 1)) << 8); | |
397 | break; | |
398 | case SPARC64_ASI_REGNUM: | |
399 | state |= ((bits & ((1 << 8) - 1)) << 24); | |
400 | break; | |
401 | case SPARC64_CCR_REGNUM: | |
402 | state |= ((bits & ((1 << 8) - 1)) << 32); | |
403 | break; | |
404 | } | |
405 | regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); | |
406 | } | |
8b39fe56 | 407 | } |
8b39fe56 MK |
408 | \f |
409 | ||
8b39fe56 MK |
410 | /* Return PC of first real instruction of the function starting at |
411 | START_PC. */ | |
412 | ||
413 | static CORE_ADDR | |
414 | sparc64_skip_prologue (CORE_ADDR start_pc) | |
415 | { | |
416 | struct symtab_and_line sal; | |
417 | CORE_ADDR func_start, func_end; | |
386c036b | 418 | struct sparc_frame_cache cache; |
8b39fe56 MK |
419 | |
420 | /* This is the preferred method, find the end of the prologue by | |
421 | using the debugging information. */ | |
422 | if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) | |
423 | { | |
424 | sal = find_pc_line (func_start, 0); | |
425 | ||
426 | if (sal.end < func_end | |
427 | && start_pc <= sal.end) | |
428 | return sal.end; | |
429 | } | |
430 | ||
386c036b | 431 | return sparc_analyze_prologue (start_pc, 0xffffffffffffffffULL, &cache); |
8b39fe56 MK |
432 | } |
433 | ||
434 | /* Normal frames. */ | |
435 | ||
386c036b | 436 | static struct sparc_frame_cache * |
8b39fe56 MK |
437 | sparc64_frame_cache (struct frame_info *next_frame, void **this_cache) |
438 | { | |
386c036b | 439 | return sparc_frame_cache (next_frame, this_cache); |
8b39fe56 MK |
440 | } |
441 | ||
442 | static void | |
443 | sparc64_frame_this_id (struct frame_info *next_frame, void **this_cache, | |
444 | struct frame_id *this_id) | |
445 | { | |
386c036b | 446 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
447 | sparc64_frame_cache (next_frame, this_cache); |
448 | ||
449 | /* This marks the outermost frame. */ | |
450 | if (cache->base == 0) | |
451 | return; | |
452 | ||
453 | (*this_id) = frame_id_build (cache->base, cache->pc); | |
454 | } | |
455 | ||
456 | static void | |
457 | sparc64_frame_prev_register (struct frame_info *next_frame, void **this_cache, | |
458 | int regnum, int *optimizedp, | |
459 | enum lval_type *lvalp, CORE_ADDR *addrp, | |
47ef841b | 460 | int *realnump, gdb_byte *valuep) |
8b39fe56 | 461 | { |
386c036b | 462 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
463 | sparc64_frame_cache (next_frame, this_cache); |
464 | ||
465 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) | |
466 | { | |
467 | *optimizedp = 0; | |
468 | *lvalp = not_lval; | |
469 | *addrp = 0; | |
470 | *realnump = -1; | |
471 | if (valuep) | |
472 | { | |
473 | CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; | |
474 | ||
475 | regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM; | |
476 | pc += frame_unwind_register_unsigned (next_frame, regnum) + 8; | |
477 | store_unsigned_integer (valuep, 8, pc); | |
478 | } | |
479 | return; | |
480 | } | |
481 | ||
f700a364 MK |
482 | /* Handle StackGhost. */ |
483 | { | |
484 | ULONGEST wcookie = sparc_fetch_wcookie (); | |
485 | ||
486 | if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM) | |
487 | { | |
488 | *optimizedp = 0; | |
489 | *lvalp = not_lval; | |
490 | *addrp = 0; | |
491 | *realnump = -1; | |
492 | if (valuep) | |
493 | { | |
494 | CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; | |
495 | ULONGEST i7; | |
496 | ||
497 | /* Read the value in from memory. */ | |
498 | i7 = get_frame_memory_unsigned (next_frame, addr, 8); | |
499 | store_unsigned_integer (valuep, 8, i7 ^ wcookie); | |
500 | } | |
501 | return; | |
502 | } | |
503 | } | |
504 | ||
8b39fe56 MK |
505 | /* The previous frame's `local' and `in' registers have been saved |
506 | in the register save area. */ | |
507 | if (!cache->frameless_p | |
508 | && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) | |
509 | { | |
510 | *optimizedp = 0; | |
511 | *lvalp = lval_memory; | |
5b2d44a0 | 512 | *addrp = cache->base + (regnum - SPARC_L0_REGNUM) * 8; |
8b39fe56 MK |
513 | *realnump = -1; |
514 | if (valuep) | |
515 | { | |
516 | struct gdbarch *gdbarch = get_frame_arch (next_frame); | |
517 | ||
518 | /* Read the value in from memory. */ | |
519 | read_memory (*addrp, valuep, register_size (gdbarch, regnum)); | |
520 | } | |
521 | return; | |
522 | } | |
523 | ||
524 | /* The previous frame's `out' registers are accessable as the | |
525 | current frame's `in' registers. */ | |
526 | if (!cache->frameless_p | |
527 | && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) | |
528 | regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); | |
529 | ||
00b25ff3 AC |
530 | *optimizedp = 0; |
531 | *lvalp = lval_register; | |
532 | *addrp = 0; | |
533 | *realnump = regnum; | |
534 | if (valuep) | |
535 | frame_unwind_register (next_frame, regnum, valuep); | |
8b39fe56 MK |
536 | } |
537 | ||
538 | static const struct frame_unwind sparc64_frame_unwind = | |
539 | { | |
540 | NORMAL_FRAME, | |
541 | sparc64_frame_this_id, | |
542 | sparc64_frame_prev_register | |
543 | }; | |
544 | ||
545 | static const struct frame_unwind * | |
546 | sparc64_frame_sniffer (struct frame_info *next_frame) | |
547 | { | |
548 | return &sparc64_frame_unwind; | |
549 | } | |
550 | \f | |
551 | ||
552 | static CORE_ADDR | |
553 | sparc64_frame_base_address (struct frame_info *next_frame, void **this_cache) | |
554 | { | |
386c036b | 555 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
556 | sparc64_frame_cache (next_frame, this_cache); |
557 | ||
5b2d44a0 | 558 | return cache->base; |
8b39fe56 MK |
559 | } |
560 | ||
561 | static const struct frame_base sparc64_frame_base = | |
562 | { | |
563 | &sparc64_frame_unwind, | |
564 | sparc64_frame_base_address, | |
565 | sparc64_frame_base_address, | |
566 | sparc64_frame_base_address | |
567 | }; | |
8b39fe56 MK |
568 | \f |
569 | /* Check whether TYPE must be 16-byte aligned. */ | |
570 | ||
571 | static int | |
572 | sparc64_16_byte_align_p (struct type *type) | |
573 | { | |
574 | if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16) | |
575 | return 1; | |
576 | ||
577 | if (sparc64_structure_or_union_p (type)) | |
578 | { | |
579 | int i; | |
580 | ||
581 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
582 | { |
583 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
584 | ||
585 | if (sparc64_16_byte_align_p (subtype)) | |
586 | return 1; | |
587 | } | |
8b39fe56 MK |
588 | } |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | /* Store floating fields of element ELEMENT of an "parameter array" | |
594 | that has type TYPE and is stored at BITPOS in VALBUF in the | |
595 | apropriate registers of REGCACHE. This function can be called | |
596 | recursively and therefore handles floating types in addition to | |
597 | structures. */ | |
598 | ||
599 | static void | |
600 | sparc64_store_floating_fields (struct regcache *regcache, struct type *type, | |
e1613aba | 601 | const gdb_byte *valbuf, int element, int bitpos) |
8b39fe56 MK |
602 | { |
603 | gdb_assert (element < 16); | |
604 | ||
605 | if (sparc64_floating_p (type)) | |
606 | { | |
607 | int len = TYPE_LENGTH (type); | |
608 | int regnum; | |
609 | ||
610 | if (len == 16) | |
611 | { | |
612 | gdb_assert (bitpos == 0); | |
613 | gdb_assert ((element % 2) == 0); | |
614 | ||
615 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
616 | regcache_cooked_write (regcache, regnum, valbuf); | |
617 | } | |
618 | else if (len == 8) | |
619 | { | |
620 | gdb_assert (bitpos == 0 || bitpos == 64); | |
621 | ||
622 | regnum = SPARC64_D0_REGNUM + element + bitpos / 64; | |
623 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
624 | } | |
625 | else | |
626 | { | |
627 | gdb_assert (len == 4); | |
628 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128); | |
629 | ||
630 | regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; | |
631 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
632 | } | |
633 | } | |
634 | else if (sparc64_structure_or_union_p (type)) | |
635 | { | |
636 | int i; | |
637 | ||
638 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
639 | { |
640 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
641 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
642 | ||
643 | sparc64_store_floating_fields (regcache, subtype, valbuf, | |
644 | element, subpos); | |
645 | } | |
200cc553 MK |
646 | |
647 | /* GCC has an interesting bug. If TYPE is a structure that has | |
648 | a single `float' member, GCC doesn't treat it as a structure | |
649 | at all, but rather as an ordinary `float' argument. This | |
650 | argument will be stored in %f1, as required by the psABI. | |
651 | However, as a member of a structure the psABI requires it to | |
5154b0cd MK |
652 | be stored in %f0. This bug is present in GCC 3.3.2, but |
653 | probably in older releases to. To appease GCC, if a | |
654 | structure has only a single `float' member, we store its | |
655 | value in %f1 too (we already have stored in %f0). */ | |
200cc553 MK |
656 | if (TYPE_NFIELDS (type) == 1) |
657 | { | |
658 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
659 | ||
660 | if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) | |
661 | regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf); | |
662 | } | |
8b39fe56 MK |
663 | } |
664 | } | |
665 | ||
666 | /* Fetch floating fields from a variable of type TYPE from the | |
667 | appropriate registers for BITPOS in REGCACHE and store it at BITPOS | |
668 | in VALBUF. This function can be called recursively and therefore | |
669 | handles floating types in addition to structures. */ | |
670 | ||
671 | static void | |
672 | sparc64_extract_floating_fields (struct regcache *regcache, struct type *type, | |
e1613aba | 673 | gdb_byte *valbuf, int bitpos) |
8b39fe56 MK |
674 | { |
675 | if (sparc64_floating_p (type)) | |
676 | { | |
677 | int len = TYPE_LENGTH (type); | |
678 | int regnum; | |
679 | ||
680 | if (len == 16) | |
681 | { | |
682 | gdb_assert (bitpos == 0 || bitpos == 128); | |
683 | ||
684 | regnum = SPARC64_Q0_REGNUM + bitpos / 128; | |
685 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
686 | } | |
687 | else if (len == 8) | |
688 | { | |
689 | gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256); | |
690 | ||
691 | regnum = SPARC64_D0_REGNUM + bitpos / 64; | |
692 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
693 | } | |
694 | else | |
695 | { | |
696 | gdb_assert (len == 4); | |
697 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256); | |
698 | ||
699 | regnum = SPARC_F0_REGNUM + bitpos / 32; | |
700 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
701 | } | |
702 | } | |
703 | else if (sparc64_structure_or_union_p (type)) | |
704 | { | |
705 | int i; | |
706 | ||
707 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
708 | { |
709 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
710 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
711 | ||
712 | sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos); | |
713 | } | |
8b39fe56 MK |
714 | } |
715 | } | |
716 | ||
717 | /* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is | |
718 | non-zero) in REGCACHE and on the stack (starting from address SP). */ | |
719 | ||
720 | static CORE_ADDR | |
721 | sparc64_store_arguments (struct regcache *regcache, int nargs, | |
722 | struct value **args, CORE_ADDR sp, | |
723 | int struct_return, CORE_ADDR struct_addr) | |
724 | { | |
725 | /* Number of extended words in the "parameter array". */ | |
726 | int num_elements = 0; | |
727 | int element = 0; | |
728 | int i; | |
729 | ||
730 | /* Take BIAS into account. */ | |
731 | sp += BIAS; | |
732 | ||
733 | /* First we calculate the number of extended words in the "parameter | |
734 | array". While doing so we also convert some of the arguments. */ | |
735 | ||
736 | if (struct_return) | |
737 | num_elements++; | |
738 | ||
739 | for (i = 0; i < nargs; i++) | |
740 | { | |
4991999e | 741 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
742 | int len = TYPE_LENGTH (type); |
743 | ||
744 | if (sparc64_structure_or_union_p (type)) | |
745 | { | |
746 | /* Structure or Union arguments. */ | |
747 | if (len <= 16) | |
748 | { | |
749 | if (num_elements % 2 && sparc64_16_byte_align_p (type)) | |
750 | num_elements++; | |
751 | num_elements += ((len + 7) / 8); | |
752 | } | |
753 | else | |
754 | { | |
755 | /* The psABI says that "Structures or unions larger than | |
756 | sixteen bytes are copied by the caller and passed | |
757 | indirectly; the caller will pass the address of a | |
758 | correctly aligned structure value. This sixty-four | |
759 | bit address will occupy one word in the parameter | |
760 | array, and may be promoted to an %o register like any | |
761 | other pointer value." Allocate memory for these | |
762 | values on the stack. */ | |
763 | sp -= len; | |
764 | ||
765 | /* Use 16-byte alignment for these values. That's | |
766 | always correct, and wasting a few bytes shouldn't be | |
767 | a problem. */ | |
768 | sp &= ~0xf; | |
769 | ||
0fd88904 | 770 | write_memory (sp, value_contents (args[i]), len); |
8b39fe56 MK |
771 | args[i] = value_from_pointer (lookup_pointer_type (type), sp); |
772 | num_elements++; | |
773 | } | |
774 | } | |
775 | else if (sparc64_floating_p (type)) | |
776 | { | |
777 | /* Floating arguments. */ | |
778 | ||
779 | if (len == 16) | |
780 | { | |
781 | /* The psABI says that "Each quad-precision parameter | |
782 | value will be assigned to two extended words in the | |
783 | parameter array. */ | |
784 | num_elements += 2; | |
785 | ||
786 | /* The psABI says that "Long doubles must be | |
787 | quad-aligned, and thus a hole might be introduced | |
788 | into the parameter array to force alignment." Skip | |
789 | an element if necessary. */ | |
790 | if (num_elements % 2) | |
791 | num_elements++; | |
792 | } | |
793 | else | |
794 | num_elements++; | |
795 | } | |
796 | else | |
797 | { | |
798 | /* Integral and pointer arguments. */ | |
799 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
800 | ||
801 | /* The psABI says that "Each argument value of integral type | |
802 | smaller than an extended word will be widened by the | |
803 | caller to an extended word according to the signed-ness | |
804 | of the argument type." */ | |
805 | if (len < 8) | |
806 | args[i] = value_cast (builtin_type_int64, args[i]); | |
807 | num_elements++; | |
808 | } | |
809 | } | |
810 | ||
811 | /* Allocate the "parameter array". */ | |
812 | sp -= num_elements * 8; | |
813 | ||
814 | /* The psABI says that "Every stack frame must be 16-byte aligned." */ | |
815 | sp &= ~0xf; | |
816 | ||
817 | /* Now we store the arguments in to the "paramater array". Some | |
818 | Integer or Pointer arguments and Structure or Union arguments | |
819 | will be passed in %o registers. Some Floating arguments and | |
820 | floating members of structures are passed in floating-point | |
821 | registers. However, for functions with variable arguments, | |
822 | floating arguments are stored in an %0 register, and for | |
823 | functions without a prototype floating arguments are stored in | |
824 | both a floating-point and an %o registers, or a floating-point | |
825 | register and memory. To simplify the logic here we always pass | |
826 | arguments in memory, an %o register, and a floating-point | |
827 | register if appropriate. This should be no problem since the | |
828 | contents of any unused memory or registers in the "parameter | |
829 | array" are undefined. */ | |
830 | ||
831 | if (struct_return) | |
832 | { | |
833 | regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr); | |
834 | element++; | |
835 | } | |
836 | ||
837 | for (i = 0; i < nargs; i++) | |
838 | { | |
e1613aba | 839 | const gdb_byte *valbuf = value_contents (args[i]); |
4991999e | 840 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
841 | int len = TYPE_LENGTH (type); |
842 | int regnum = -1; | |
e1613aba | 843 | gdb_byte buf[16]; |
8b39fe56 MK |
844 | |
845 | if (sparc64_structure_or_union_p (type)) | |
846 | { | |
847 | /* Structure or Union arguments. */ | |
848 | gdb_assert (len <= 16); | |
849 | memset (buf, 0, sizeof (buf)); | |
850 | valbuf = memcpy (buf, valbuf, len); | |
851 | ||
852 | if (element % 2 && sparc64_16_byte_align_p (type)) | |
853 | element++; | |
854 | ||
855 | if (element < 6) | |
856 | { | |
857 | regnum = SPARC_O0_REGNUM + element; | |
858 | if (len > 8 && element < 5) | |
859 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); | |
860 | } | |
861 | ||
862 | if (element < 16) | |
863 | sparc64_store_floating_fields (regcache, type, valbuf, element, 0); | |
864 | } | |
865 | else if (sparc64_floating_p (type)) | |
866 | { | |
867 | /* Floating arguments. */ | |
868 | if (len == 16) | |
869 | { | |
870 | if (element % 2) | |
871 | element++; | |
872 | if (element < 16) | |
873 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
874 | } | |
875 | else if (len == 8) | |
876 | { | |
877 | if (element < 16) | |
878 | regnum = SPARC64_D0_REGNUM + element; | |
879 | } | |
880 | else | |
881 | { | |
882 | /* The psABI says "Each single-precision parameter value | |
883 | will be assigned to one extended word in the | |
884 | parameter array, and right-justified within that | |
885 | word; the left half (even floatregister) is | |
886 | undefined." Even though the psABI says that "the | |
887 | left half is undefined", set it to zero here. */ | |
888 | memset (buf, 0, 4); | |
8ada74e3 MK |
889 | memcpy (buf + 4, valbuf, 4); |
890 | valbuf = buf; | |
8b39fe56 MK |
891 | len = 8; |
892 | if (element < 16) | |
8ada74e3 | 893 | regnum = SPARC64_D0_REGNUM + element; |
8b39fe56 MK |
894 | } |
895 | } | |
896 | else | |
897 | { | |
898 | /* Integral and pointer arguments. */ | |
899 | gdb_assert (len == 8); | |
900 | if (element < 6) | |
901 | regnum = SPARC_O0_REGNUM + element; | |
902 | } | |
903 | ||
904 | if (regnum != -1) | |
905 | { | |
906 | regcache_cooked_write (regcache, regnum, valbuf); | |
907 | ||
908 | /* If we're storing the value in a floating-point register, | |
909 | also store it in the corresponding %0 register(s). */ | |
910 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM) | |
911 | { | |
912 | gdb_assert (element < 6); | |
913 | regnum = SPARC_O0_REGNUM + element; | |
914 | regcache_cooked_write (regcache, regnum, valbuf); | |
915 | } | |
916 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM) | |
917 | { | |
918 | gdb_assert (element < 6); | |
919 | regnum = SPARC_O0_REGNUM + element; | |
920 | regcache_cooked_write (regcache, regnum, valbuf); | |
d47079be | 921 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); |
8b39fe56 MK |
922 | } |
923 | } | |
924 | ||
c4f2d4d7 | 925 | /* Always store the argument in memory. */ |
8b39fe56 MK |
926 | write_memory (sp + element * 8, valbuf, len); |
927 | element += ((len + 7) / 8); | |
928 | } | |
929 | ||
930 | gdb_assert (element == num_elements); | |
931 | ||
932 | /* Take BIAS into account. */ | |
933 | sp -= BIAS; | |
934 | return sp; | |
935 | } | |
936 | ||
937 | static CORE_ADDR | |
7d9b040b | 938 | sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
8b39fe56 MK |
939 | struct regcache *regcache, CORE_ADDR bp_addr, |
940 | int nargs, struct value **args, CORE_ADDR sp, | |
941 | int struct_return, CORE_ADDR struct_addr) | |
942 | { | |
943 | /* Set return address. */ | |
944 | regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8); | |
945 | ||
946 | /* Set up function arguments. */ | |
947 | sp = sparc64_store_arguments (regcache, nargs, args, sp, | |
948 | struct_return, struct_addr); | |
949 | ||
950 | /* Allocate the register save area. */ | |
951 | sp -= 16 * 8; | |
952 | ||
953 | /* Stack should be 16-byte aligned at this point. */ | |
3567a8ea | 954 | gdb_assert ((sp + BIAS) % 16 == 0); |
8b39fe56 MK |
955 | |
956 | /* Finally, update the stack pointer. */ | |
957 | regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); | |
958 | ||
5b2d44a0 | 959 | return sp + BIAS; |
8b39fe56 MK |
960 | } |
961 | \f | |
962 | ||
963 | /* Extract from an array REGBUF containing the (raw) register state, a | |
964 | function return value of TYPE, and copy that into VALBUF. */ | |
965 | ||
966 | static void | |
967 | sparc64_extract_return_value (struct type *type, struct regcache *regcache, | |
e1613aba | 968 | gdb_byte *valbuf) |
8b39fe56 MK |
969 | { |
970 | int len = TYPE_LENGTH (type); | |
e1613aba | 971 | gdb_byte buf[32]; |
8b39fe56 MK |
972 | int i; |
973 | ||
974 | if (sparc64_structure_or_union_p (type)) | |
975 | { | |
976 | /* Structure or Union return values. */ | |
977 | gdb_assert (len <= 32); | |
978 | ||
979 | for (i = 0; i < ((len + 7) / 8); i++) | |
980 | regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
981 | if (TYPE_CODE (type) != TYPE_CODE_UNION) | |
982 | sparc64_extract_floating_fields (regcache, type, buf, 0); | |
983 | memcpy (valbuf, buf, len); | |
984 | } | |
985 | else if (sparc64_floating_p (type)) | |
986 | { | |
987 | /* Floating return values. */ | |
988 | for (i = 0; i < len / 4; i++) | |
989 | regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
990 | memcpy (valbuf, buf, len); | |
991 | } | |
4bd87714 JB |
992 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
993 | { | |
994 | /* Small arrays are returned the same way as small structures. */ | |
995 | gdb_assert (len <= 32); | |
996 | ||
997 | for (i = 0; i < ((len + 7) / 8); i++) | |
998 | regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
999 | memcpy (valbuf, buf, len); | |
1000 | } | |
8b39fe56 MK |
1001 | else |
1002 | { | |
1003 | /* Integral and pointer return values. */ | |
1004 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1005 | ||
1006 | /* Just stripping off any unused bytes should preserve the | |
1007 | signed-ness just fine. */ | |
1008 | regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); | |
1009 | memcpy (valbuf, buf + 8 - len, len); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | /* Write into the appropriate registers a function return value stored | |
1014 | in VALBUF of type TYPE. */ | |
1015 | ||
1016 | static void | |
1017 | sparc64_store_return_value (struct type *type, struct regcache *regcache, | |
e1613aba | 1018 | const gdb_byte *valbuf) |
8b39fe56 MK |
1019 | { |
1020 | int len = TYPE_LENGTH (type); | |
e1613aba | 1021 | gdb_byte buf[16]; |
8b39fe56 MK |
1022 | int i; |
1023 | ||
1024 | if (sparc64_structure_or_union_p (type)) | |
1025 | { | |
1026 | /* Structure or Union return values. */ | |
1027 | gdb_assert (len <= 32); | |
1028 | ||
1029 | /* Simplify matters by storing the complete value (including | |
1030 | floating members) into %o0 and %o1. Floating members are | |
1031 | also store in the appropriate floating-point registers. */ | |
1032 | memset (buf, 0, sizeof (buf)); | |
1033 | memcpy (buf, valbuf, len); | |
1034 | for (i = 0; i < ((len + 7) / 8); i++) | |
60af1db2 | 1035 | regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); |
8b39fe56 MK |
1036 | if (TYPE_CODE (type) != TYPE_CODE_UNION) |
1037 | sparc64_store_floating_fields (regcache, type, buf, 0, 0); | |
1038 | } | |
1039 | else if (sparc64_floating_p (type)) | |
1040 | { | |
1041 | /* Floating return values. */ | |
1042 | memcpy (buf, valbuf, len); | |
1043 | for (i = 0; i < len / 4; i++) | |
1044 | regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
1045 | } | |
4bd87714 JB |
1046 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
1047 | { | |
1048 | /* Small arrays are returned the same way as small structures. */ | |
1049 | gdb_assert (len <= 32); | |
1050 | ||
1051 | memset (buf, 0, sizeof (buf)); | |
1052 | memcpy (buf, valbuf, len); | |
1053 | for (i = 0; i < ((len + 7) / 8); i++) | |
1054 | regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
1055 | } | |
8b39fe56 MK |
1056 | else |
1057 | { | |
1058 | /* Integral and pointer return values. */ | |
1059 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1060 | ||
1061 | /* ??? Do we need to do any sign-extension here? */ | |
1062 | memset (buf, 0, 8); | |
1063 | memcpy (buf + 8 - len, valbuf, len); | |
1064 | regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); | |
1065 | } | |
1066 | } | |
1067 | ||
60af1db2 MK |
1068 | static enum return_value_convention |
1069 | sparc64_return_value (struct gdbarch *gdbarch, struct type *type, | |
e1613aba MK |
1070 | struct regcache *regcache, gdb_byte *readbuf, |
1071 | const gdb_byte *writebuf) | |
8b39fe56 | 1072 | { |
60af1db2 MK |
1073 | if (TYPE_LENGTH (type) > 32) |
1074 | return RETURN_VALUE_STRUCT_CONVENTION; | |
1075 | ||
1076 | if (readbuf) | |
1077 | sparc64_extract_return_value (type, regcache, readbuf); | |
1078 | if (writebuf) | |
1079 | sparc64_store_return_value (type, regcache, writebuf); | |
1080 | ||
1081 | return RETURN_VALUE_REGISTER_CONVENTION; | |
8b39fe56 | 1082 | } |
8b39fe56 | 1083 | \f |
8b39fe56 | 1084 | |
02a71ae8 MK |
1085 | static void |
1086 | sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, | |
aff37fc1 DM |
1087 | struct dwarf2_frame_state_reg *reg, |
1088 | struct frame_info *next_frame) | |
02a71ae8 MK |
1089 | { |
1090 | switch (regnum) | |
1091 | { | |
1092 | case SPARC_G0_REGNUM: | |
1093 | /* Since %g0 is always zero, there is no point in saving it, and | |
1094 | people will be inclined omit it from the CFI. Make sure we | |
1095 | don't warn about that. */ | |
1096 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; | |
1097 | break; | |
1098 | case SPARC_SP_REGNUM: | |
1099 | reg->how = DWARF2_FRAME_REG_CFA; | |
1100 | break; | |
1101 | case SPARC64_PC_REGNUM: | |
1102 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; | |
1103 | reg->loc.offset = 8; | |
1104 | break; | |
1105 | case SPARC64_NPC_REGNUM: | |
1106 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; | |
1107 | reg->loc.offset = 12; | |
1108 | break; | |
1109 | } | |
1110 | } | |
1111 | ||
8b39fe56 | 1112 | void |
386c036b | 1113 | sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
8b39fe56 | 1114 | { |
386c036b | 1115 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
8b39fe56 | 1116 | |
386c036b MK |
1117 | tdep->pc_regnum = SPARC64_PC_REGNUM; |
1118 | tdep->npc_regnum = SPARC64_NPC_REGNUM; | |
8b39fe56 | 1119 | |
386c036b | 1120 | /* This is what all the fuss is about. */ |
8b39fe56 MK |
1121 | set_gdbarch_long_bit (gdbarch, 64); |
1122 | set_gdbarch_long_long_bit (gdbarch, 64); | |
1123 | set_gdbarch_ptr_bit (gdbarch, 64); | |
8b39fe56 MK |
1124 | |
1125 | set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS); | |
1126 | set_gdbarch_register_name (gdbarch, sparc64_register_name); | |
1127 | set_gdbarch_register_type (gdbarch, sparc64_register_type); | |
1128 | set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS); | |
1129 | set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read); | |
1130 | set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write); | |
1131 | ||
1132 | /* Register numbers of various important registers. */ | |
8b39fe56 | 1133 | set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */ |
8b39fe56 MK |
1134 | |
1135 | /* Call dummy code. */ | |
386c036b MK |
1136 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
1137 | set_gdbarch_push_dummy_code (gdbarch, NULL); | |
8b39fe56 MK |
1138 | set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call); |
1139 | ||
60af1db2 | 1140 | set_gdbarch_return_value (gdbarch, sparc64_return_value); |
386c036b MK |
1141 | set_gdbarch_stabs_argument_has_addr |
1142 | (gdbarch, default_stabs_argument_has_addr); | |
8b39fe56 MK |
1143 | |
1144 | set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); | |
1145 | ||
02a71ae8 MK |
1146 | /* Hook in the DWARF CFI frame unwinder. */ |
1147 | dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg); | |
1148 | /* FIXME: kettenis/20050423: Don't enable the unwinder until the | |
1149 | StackGhost issues have been resolved. */ | |
1150 | ||
386c036b | 1151 | frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer); |
8b39fe56 | 1152 | frame_base_set_default (gdbarch, &sparc64_frame_base); |
386c036b MK |
1153 | } |
1154 | \f | |
8b39fe56 | 1155 | |
386c036b | 1156 | /* Helper functions for dealing with register sets. */ |
8b39fe56 | 1157 | |
386c036b MK |
1158 | #define TSTATE_CWP 0x000000000000001fULL |
1159 | #define TSTATE_ICC 0x0000000f00000000ULL | |
1160 | #define TSTATE_XCC 0x000000f000000000ULL | |
8b39fe56 | 1161 | |
386c036b MK |
1162 | #define PSR_S 0x00000080 |
1163 | #define PSR_ICC 0x00f00000 | |
1164 | #define PSR_VERS 0x0f000000 | |
1165 | #define PSR_IMPL 0xf0000000 | |
1166 | #define PSR_V8PLUS 0xff000000 | |
1167 | #define PSR_XCC 0x000f0000 | |
8b39fe56 | 1168 | |
3567a8ea | 1169 | void |
386c036b MK |
1170 | sparc64_supply_gregset (const struct sparc_gregset *gregset, |
1171 | struct regcache *regcache, | |
1172 | int regnum, const void *gregs) | |
8b39fe56 | 1173 | { |
e6d4f032 | 1174 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
e1613aba | 1175 | const gdb_byte *regs = gregs; |
8b39fe56 MK |
1176 | int i; |
1177 | ||
386c036b | 1178 | if (sparc32) |
8b39fe56 | 1179 | { |
386c036b MK |
1180 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1181 | { | |
1182 | int offset = gregset->r_tstate_offset; | |
1183 | ULONGEST tstate, psr; | |
e1613aba | 1184 | gdb_byte buf[4]; |
386c036b MK |
1185 | |
1186 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1187 | psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12) | |
1188 | | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS); | |
1189 | store_unsigned_integer (buf, 4, psr); | |
1190 | regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf); | |
1191 | } | |
1192 | ||
1193 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) | |
1194 | regcache_raw_supply (regcache, SPARC32_PC_REGNUM, | |
1195 | regs + gregset->r_pc_offset + 4); | |
1196 | ||
1197 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1198 | regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, | |
1199 | regs + gregset->r_npc_offset + 4); | |
8b39fe56 | 1200 | |
386c036b | 1201 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
8b39fe56 | 1202 | { |
386c036b MK |
1203 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1204 | regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1205 | } |
1206 | } | |
1207 | else | |
1208 | { | |
386c036b MK |
1209 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1210 | regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, | |
1211 | regs + gregset->r_tstate_offset); | |
8b39fe56 | 1212 | |
386c036b MK |
1213 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
1214 | regcache_raw_supply (regcache, SPARC64_PC_REGNUM, | |
1215 | regs + gregset->r_pc_offset); | |
1216 | ||
1217 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) | |
1218 | regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, | |
1219 | regs + gregset->r_npc_offset); | |
1220 | ||
1221 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) | |
3567a8ea | 1222 | { |
e1613aba | 1223 | gdb_byte buf[8]; |
386c036b MK |
1224 | |
1225 | memset (buf, 0, 8); | |
1226 | memcpy (buf + 8 - gregset->r_y_size, | |
1227 | regs + gregset->r_y_offset, gregset->r_y_size); | |
1228 | regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf); | |
3567a8ea | 1229 | } |
8b39fe56 | 1230 | |
386c036b MK |
1231 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
1232 | && gregset->r_fprs_offset != -1) | |
1233 | regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM, | |
1234 | regs + gregset->r_fprs_offset); | |
1235 | } | |
1236 | ||
1237 | if (regnum == SPARC_G0_REGNUM || regnum == -1) | |
1238 | regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL); | |
1239 | ||
1240 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1241 | { | |
1242 | int offset = gregset->r_g1_offset; | |
1243 | ||
1244 | if (sparc32) | |
1245 | offset += 4; | |
1246 | ||
1247 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
8b39fe56 | 1248 | { |
3567a8ea | 1249 | if (regnum == i || regnum == -1) |
386c036b MK |
1250 | regcache_raw_supply (regcache, i, regs + offset); |
1251 | offset += 8; | |
1252 | } | |
1253 | } | |
1254 | ||
1255 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1256 | { | |
1257 | /* Not all of the register set variants include Locals and | |
1258 | Inputs. For those that don't, we read them off the stack. */ | |
1259 | if (gregset->r_l0_offset == -1) | |
1260 | { | |
1261 | ULONGEST sp; | |
1262 | ||
1263 | regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp); | |
1264 | sparc_supply_rwindow (regcache, sp, regnum); | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | int offset = gregset->r_l0_offset; | |
1269 | ||
1270 | if (sparc32) | |
1271 | offset += 4; | |
1272 | ||
1273 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1274 | { |
386c036b MK |
1275 | if (regnum == i || regnum == -1) |
1276 | regcache_raw_supply (regcache, i, regs + offset); | |
1277 | offset += 8; | |
3567a8ea | 1278 | } |
8b39fe56 MK |
1279 | } |
1280 | } | |
1281 | } | |
1282 | ||
1283 | void | |
386c036b MK |
1284 | sparc64_collect_gregset (const struct sparc_gregset *gregset, |
1285 | const struct regcache *regcache, | |
1286 | int regnum, void *gregs) | |
8b39fe56 | 1287 | { |
e6d4f032 | 1288 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
e1613aba | 1289 | gdb_byte *regs = gregs; |
3567a8ea MK |
1290 | int i; |
1291 | ||
386c036b | 1292 | if (sparc32) |
8b39fe56 | 1293 | { |
386c036b MK |
1294 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1295 | { | |
1296 | int offset = gregset->r_tstate_offset; | |
1297 | ULONGEST tstate, psr; | |
e1613aba | 1298 | gdb_byte buf[8]; |
386c036b MK |
1299 | |
1300 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1301 | regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf); | |
1302 | psr = extract_unsigned_integer (buf, 4); | |
1303 | tstate |= (psr & PSR_ICC) << 12; | |
1304 | if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS) | |
1305 | tstate |= (psr & PSR_XCC) << 20; | |
1306 | store_unsigned_integer (buf, 8, tstate); | |
1307 | memcpy (regs + offset, buf, 8); | |
1308 | } | |
8b39fe56 | 1309 | |
386c036b MK |
1310 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
1311 | regcache_raw_collect (regcache, SPARC32_PC_REGNUM, | |
1312 | regs + gregset->r_pc_offset + 4); | |
1313 | ||
1314 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1315 | regcache_raw_collect (regcache, SPARC32_NPC_REGNUM, | |
1316 | regs + gregset->r_npc_offset + 4); | |
1317 | ||
1318 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) | |
8b39fe56 | 1319 | { |
386c036b MK |
1320 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1321 | regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1322 | } |
1323 | } | |
1324 | else | |
1325 | { | |
386c036b MK |
1326 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1327 | regcache_raw_collect (regcache, SPARC64_STATE_REGNUM, | |
1328 | regs + gregset->r_tstate_offset); | |
1329 | ||
1330 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) | |
1331 | regcache_raw_collect (regcache, SPARC64_PC_REGNUM, | |
1332 | regs + gregset->r_pc_offset); | |
3567a8ea | 1333 | |
386c036b MK |
1334 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
1335 | regcache_raw_collect (regcache, SPARC64_NPC_REGNUM, | |
1336 | regs + gregset->r_npc_offset); | |
3567a8ea | 1337 | |
386c036b | 1338 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
3567a8ea | 1339 | { |
e1613aba | 1340 | gdb_byte buf[8]; |
386c036b MK |
1341 | |
1342 | regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf); | |
1343 | memcpy (regs + gregset->r_y_offset, | |
1344 | buf + 8 - gregset->r_y_size, gregset->r_y_size); | |
1345 | } | |
1346 | ||
1347 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) | |
1348 | && gregset->r_fprs_offset != -1) | |
1349 | regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM, | |
1350 | regs + gregset->r_fprs_offset); | |
1351 | ||
1352 | } | |
1353 | ||
1354 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1355 | { | |
1356 | int offset = gregset->r_g1_offset; | |
1357 | ||
1358 | if (sparc32) | |
1359 | offset += 4; | |
1360 | ||
1361 | /* %g0 is always zero. */ | |
1362 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
1363 | { | |
1364 | if (regnum == i || regnum == -1) | |
1365 | regcache_raw_collect (regcache, i, regs + offset); | |
1366 | offset += 8; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1371 | { | |
1372 | /* Not all of the register set variants include Locals and | |
1373 | Inputs. For those that don't, we read them off the stack. */ | |
1374 | if (gregset->r_l0_offset != -1) | |
1375 | { | |
1376 | int offset = gregset->r_l0_offset; | |
1377 | ||
1378 | if (sparc32) | |
1379 | offset += 4; | |
1380 | ||
1381 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1382 | { |
386c036b MK |
1383 | if (regnum == i || regnum == -1) |
1384 | regcache_raw_collect (regcache, i, regs + offset); | |
1385 | offset += 8; | |
3567a8ea MK |
1386 | } |
1387 | } | |
8b39fe56 MK |
1388 | } |
1389 | } | |
8b39fe56 | 1390 | |
386c036b MK |
1391 | void |
1392 | sparc64_supply_fpregset (struct regcache *regcache, | |
1393 | int regnum, const void *fpregs) | |
1394 | { | |
e6d4f032 | 1395 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
e1613aba | 1396 | const gdb_byte *regs = fpregs; |
386c036b MK |
1397 | int i; |
1398 | ||
1399 | for (i = 0; i < 32; i++) | |
1400 | { | |
1401 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1402 | regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1403 | } | |
1404 | ||
1405 | if (sparc32) | |
1406 | { | |
1407 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1408 | regcache_raw_supply (regcache, SPARC32_FSR_REGNUM, | |
1409 | regs + (32 * 4) + (16 * 8) + 4); | |
1410 | } | |
1411 | else | |
1412 | { | |
1413 | for (i = 0; i < 16; i++) | |
1414 | { | |
1415 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1416 | regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i, | |
1417 | regs + (32 * 4) + (i * 8)); | |
1418 | } | |
1419 | ||
1420 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1421 | regcache_raw_supply (regcache, SPARC64_FSR_REGNUM, | |
1422 | regs + (32 * 4) + (16 * 8)); | |
1423 | } | |
1424 | } | |
8b39fe56 MK |
1425 | |
1426 | void | |
386c036b MK |
1427 | sparc64_collect_fpregset (const struct regcache *regcache, |
1428 | int regnum, void *fpregs) | |
8b39fe56 | 1429 | { |
e6d4f032 | 1430 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
e1613aba | 1431 | gdb_byte *regs = fpregs; |
386c036b MK |
1432 | int i; |
1433 | ||
1434 | for (i = 0; i < 32; i++) | |
1435 | { | |
1436 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1437 | regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1438 | } | |
1439 | ||
1440 | if (sparc32) | |
1441 | { | |
1442 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1443 | regcache_raw_collect (regcache, SPARC32_FSR_REGNUM, | |
1444 | regs + (32 * 4) + (16 * 8) + 4); | |
1445 | } | |
1446 | else | |
1447 | { | |
1448 | for (i = 0; i < 16; i++) | |
1449 | { | |
1450 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1451 | regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i, | |
1452 | regs + (32 * 4) + (i * 8)); | |
1453 | } | |
1454 | ||
1455 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1456 | regcache_raw_collect (regcache, SPARC64_FSR_REGNUM, | |
1457 | regs + (32 * 4) + (16 * 8)); | |
1458 | } | |
8b39fe56 | 1459 | } |
fd936806 MK |
1460 | |
1461 | ||
1462 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
1463 | void _initialize_sparc64_tdep (void); | |
1464 | ||
1465 | void | |
1466 | _initialize_sparc64_tdep (void) | |
1467 | { | |
1468 | /* Initialize the UltraSPARC-specific register types. */ | |
1469 | sparc64_init_types(); | |
1470 | } |