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