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7b112f9c JT |
1 | /* Target-dependent code for PowerPC systems using the SVR4 ABI |
2 | for GDB, the GNU debugger. | |
3 | ||
7b6bb8da | 4 | Copyright (C) 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010, 2011 |
65ada037 | 5 | Free Software Foundation, Inc. |
7b112f9c JT |
6 | |
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
7b112f9c JT |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
7b112f9c JT |
21 | |
22 | #include "defs.h" | |
23 | #include "gdbcore.h" | |
24 | #include "inferior.h" | |
25 | #include "regcache.h" | |
26 | #include "value.h" | |
bdf64bac | 27 | #include "gdb_string.h" |
8be9034a | 28 | #include "gdb_assert.h" |
7b112f9c | 29 | #include "ppc-tdep.h" |
6066c3de | 30 | #include "target.h" |
0a90bcdd | 31 | #include "objfiles.h" |
7d9b040b | 32 | #include "infcall.h" |
54fcddd0 | 33 | #include "dwarf2.h" |
7b112f9c | 34 | |
0df8b418 | 35 | /* Pass the arguments in either registers, or in the stack. Using the |
7b112f9c JT |
36 | ppc sysv ABI, the first eight words of the argument list (that might |
37 | be less than eight parameters if some parameters occupy more than one | |
38 | word) are passed in r3..r10 registers. float and double parameters are | |
0df8b418 MS |
39 | passed in fpr's, in addition to that. Rest of the parameters if any |
40 | are passed in user stack. | |
7b112f9c JT |
41 | |
42 | If the function is returning a structure, then the return address is passed | |
43 | in r3, then the first 7 words of the parametes can be passed in registers, | |
0df8b418 | 44 | starting from r4. */ |
7b112f9c JT |
45 | |
46 | CORE_ADDR | |
7d9b040b | 47 | ppc_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
77b2b6d4 AC |
48 | struct regcache *regcache, CORE_ADDR bp_addr, |
49 | int nargs, struct value **args, CORE_ADDR sp, | |
50 | int struct_return, CORE_ADDR struct_addr) | |
7b112f9c | 51 | { |
40a6adc1 | 52 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
e17a4113 | 53 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
54fcddd0 UW |
54 | struct type *ftype; |
55 | int opencl_abi = 0; | |
fb4443d8 | 56 | ULONGEST saved_sp; |
68856ea3 AC |
57 | int argspace = 0; /* 0 is an initial wrong guess. */ |
58 | int write_pass; | |
7b112f9c | 59 | |
b14d30e1 JM |
60 | gdb_assert (tdep->wordsize == 4); |
61 | ||
40a6adc1 | 62 | regcache_cooked_read_unsigned (regcache, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 63 | &saved_sp); |
fb4443d8 | 64 | |
54fcddd0 UW |
65 | ftype = check_typedef (value_type (function)); |
66 | if (TYPE_CODE (ftype) == TYPE_CODE_PTR) | |
67 | ftype = check_typedef (TYPE_TARGET_TYPE (ftype)); | |
68 | if (TYPE_CODE (ftype) == TYPE_CODE_FUNC | |
69 | && TYPE_CALLING_CONVENTION (ftype) == DW_CC_GDB_IBM_OpenCL) | |
70 | opencl_abi = 1; | |
71 | ||
68856ea3 | 72 | /* Go through the argument list twice. |
7b112f9c | 73 | |
68856ea3 AC |
74 | Pass 1: Figure out how much new stack space is required for |
75 | arguments and pushed values. Unlike the PowerOpen ABI, the SysV | |
76 | ABI doesn't reserve any extra space for parameters which are put | |
77 | in registers, but does always push structures and then pass their | |
78 | address. | |
7a41266b | 79 | |
68856ea3 AC |
80 | Pass 2: Replay the same computation but this time also write the |
81 | values out to the target. */ | |
7b112f9c | 82 | |
68856ea3 AC |
83 | for (write_pass = 0; write_pass < 2; write_pass++) |
84 | { | |
85 | int argno; | |
86 | /* Next available floating point register for float and double | |
87 | arguments. */ | |
88 | int freg = 1; | |
89 | /* Next available general register for non-float, non-vector | |
90 | arguments. */ | |
91 | int greg = 3; | |
92 | /* Next available vector register for vector arguments. */ | |
93 | int vreg = 2; | |
94 | /* Arguments start above the "LR save word" and "Back chain". */ | |
95 | int argoffset = 2 * tdep->wordsize; | |
96 | /* Structures start after the arguments. */ | |
97 | int structoffset = argoffset + argspace; | |
98 | ||
99 | /* If the function is returning a `struct', then the first word | |
944fcfab AC |
100 | (which will be passed in r3) is used for struct return |
101 | address. In that case we should advance one word and start | |
102 | from r4 register to copy parameters. */ | |
68856ea3 | 103 | if (struct_return) |
7b112f9c | 104 | { |
68856ea3 AC |
105 | if (write_pass) |
106 | regcache_cooked_write_signed (regcache, | |
107 | tdep->ppc_gp0_regnum + greg, | |
108 | struct_addr); | |
109 | greg++; | |
7b112f9c | 110 | } |
68856ea3 AC |
111 | |
112 | for (argno = 0; argno < nargs; argno++) | |
7b112f9c | 113 | { |
68856ea3 | 114 | struct value *arg = args[argno]; |
df407dfe | 115 | struct type *type = check_typedef (value_type (arg)); |
68856ea3 | 116 | int len = TYPE_LENGTH (type); |
0fd88904 | 117 | const bfd_byte *val = value_contents (arg); |
68856ea3 | 118 | |
55eddb0f DJ |
119 | if (TYPE_CODE (type) == TYPE_CODE_FLT && len <= 8 |
120 | && !tdep->soft_float) | |
7b112f9c | 121 | { |
68856ea3 | 122 | /* Floating point value converted to "double" then |
944fcfab AC |
123 | passed in an FP register, when the registers run out, |
124 | 8 byte aligned stack is used. */ | |
68856ea3 AC |
125 | if (freg <= 8) |
126 | { | |
127 | if (write_pass) | |
128 | { | |
129 | /* Always store the floating point value using | |
944fcfab | 130 | the register's floating-point format. */ |
50fd1280 | 131 | gdb_byte regval[MAX_REGISTER_SIZE]; |
68856ea3 | 132 | struct type *regtype |
366f009f | 133 | = register_type (gdbarch, tdep->ppc_fp0_regnum + freg); |
68856ea3 | 134 | convert_typed_floating (val, type, regval, regtype); |
366f009f JB |
135 | regcache_cooked_write (regcache, |
136 | tdep->ppc_fp0_regnum + freg, | |
68856ea3 AC |
137 | regval); |
138 | } | |
139 | freg++; | |
140 | } | |
7b112f9c JT |
141 | else |
142 | { | |
f964a756 MK |
143 | /* The SysV ABI tells us to convert floats to |
144 | doubles before writing them to an 8 byte aligned | |
145 | stack location. Unfortunately GCC does not do | |
146 | that, and stores floats into 4 byte aligned | |
147 | locations without converting them to doubles. | |
148 | Since there is no know compiler that actually | |
149 | follows the ABI here, we implement the GCC | |
150 | convention. */ | |
151 | ||
152 | /* Align to 4 bytes or 8 bytes depending on the type of | |
153 | the argument (float or double). */ | |
154 | argoffset = align_up (argoffset, len); | |
68856ea3 | 155 | if (write_pass) |
68856ea3 | 156 | write_memory (sp + argoffset, val, len); |
f964a756 | 157 | argoffset += len; |
7b112f9c JT |
158 | } |
159 | } | |
b14d30e1 JM |
160 | else if (TYPE_CODE (type) == TYPE_CODE_FLT |
161 | && len == 16 | |
162 | && !tdep->soft_float | |
40a6adc1 | 163 | && (gdbarch_long_double_format (gdbarch) |
b14d30e1 JM |
164 | == floatformats_ibm_long_double)) |
165 | { | |
166 | /* IBM long double passed in two FP registers if | |
167 | available, otherwise 8-byte aligned stack. */ | |
168 | if (freg <= 7) | |
169 | { | |
170 | if (write_pass) | |
171 | { | |
172 | regcache_cooked_write (regcache, | |
173 | tdep->ppc_fp0_regnum + freg, | |
174 | val); | |
175 | regcache_cooked_write (regcache, | |
176 | tdep->ppc_fp0_regnum + freg + 1, | |
177 | val + 8); | |
178 | } | |
179 | freg += 2; | |
180 | } | |
181 | else | |
182 | { | |
183 | argoffset = align_up (argoffset, 8); | |
184 | if (write_pass) | |
185 | write_memory (sp + argoffset, val, len); | |
186 | argoffset += 16; | |
187 | } | |
188 | } | |
55eddb0f DJ |
189 | else if (len == 8 |
190 | && (TYPE_CODE (type) == TYPE_CODE_INT /* long long */ | |
00fbcec4 JM |
191 | || TYPE_CODE (type) == TYPE_CODE_FLT /* double */ |
192 | || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT | |
193 | && tdep->soft_float))) | |
7b112f9c | 194 | { |
00fbcec4 JM |
195 | /* "long long" or soft-float "double" or "_Decimal64" |
196 | passed in an odd/even register pair with the low | |
197 | addressed word in the odd register and the high | |
198 | addressed word in the even register, or when the | |
199 | registers run out an 8 byte aligned stack | |
200 | location. */ | |
68856ea3 AC |
201 | if (greg > 9) |
202 | { | |
203 | /* Just in case GREG was 10. */ | |
204 | greg = 11; | |
205 | argoffset = align_up (argoffset, 8); | |
206 | if (write_pass) | |
207 | write_memory (sp + argoffset, val, len); | |
208 | argoffset += 8; | |
209 | } | |
68856ea3 AC |
210 | else |
211 | { | |
212 | /* Must start on an odd register - r3/r4 etc. */ | |
213 | if ((greg & 1) == 0) | |
214 | greg++; | |
215 | if (write_pass) | |
216 | { | |
217 | regcache_cooked_write (regcache, | |
218 | tdep->ppc_gp0_regnum + greg + 0, | |
219 | val + 0); | |
220 | regcache_cooked_write (regcache, | |
221 | tdep->ppc_gp0_regnum + greg + 1, | |
222 | val + 4); | |
223 | } | |
224 | greg += 2; | |
225 | } | |
7b112f9c | 226 | } |
00fbcec4 JM |
227 | else if (len == 16 |
228 | && ((TYPE_CODE (type) == TYPE_CODE_FLT | |
229 | && (gdbarch_long_double_format (gdbarch) | |
230 | == floatformats_ibm_long_double)) | |
231 | || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT | |
232 | && tdep->soft_float))) | |
b14d30e1 | 233 | { |
00fbcec4 JM |
234 | /* Soft-float IBM long double or _Decimal128 passed in |
235 | four consecutive registers, or on the stack. The | |
236 | registers are not necessarily odd/even pairs. */ | |
b14d30e1 JM |
237 | if (greg > 7) |
238 | { | |
239 | greg = 11; | |
240 | argoffset = align_up (argoffset, 8); | |
241 | if (write_pass) | |
242 | write_memory (sp + argoffset, val, len); | |
243 | argoffset += 16; | |
244 | } | |
245 | else | |
246 | { | |
247 | if (write_pass) | |
248 | { | |
249 | regcache_cooked_write (regcache, | |
250 | tdep->ppc_gp0_regnum + greg + 0, | |
251 | val + 0); | |
252 | regcache_cooked_write (regcache, | |
253 | tdep->ppc_gp0_regnum + greg + 1, | |
254 | val + 4); | |
255 | regcache_cooked_write (regcache, | |
256 | tdep->ppc_gp0_regnum + greg + 2, | |
257 | val + 8); | |
258 | regcache_cooked_write (regcache, | |
259 | tdep->ppc_gp0_regnum + greg + 3, | |
260 | val + 12); | |
261 | } | |
262 | greg += 4; | |
263 | } | |
264 | } | |
1300a2f4 TJB |
265 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && len <= 8 |
266 | && !tdep->soft_float) | |
267 | { | |
268 | /* 32-bit and 64-bit decimal floats go in f1 .. f8. They can | |
269 | end up in memory. */ | |
270 | ||
271 | if (freg <= 8) | |
272 | { | |
273 | if (write_pass) | |
274 | { | |
275 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
276 | const gdb_byte *p; | |
277 | ||
278 | /* 32-bit decimal floats are right aligned in the | |
279 | doubleword. */ | |
280 | if (TYPE_LENGTH (type) == 4) | |
281 | { | |
282 | memcpy (regval + 4, val, 4); | |
283 | p = regval; | |
284 | } | |
285 | else | |
286 | p = val; | |
287 | ||
288 | regcache_cooked_write (regcache, | |
289 | tdep->ppc_fp0_regnum + freg, p); | |
290 | } | |
291 | ||
292 | freg++; | |
293 | } | |
294 | else | |
295 | { | |
296 | argoffset = align_up (argoffset, len); | |
297 | ||
298 | if (write_pass) | |
299 | /* Write value in the stack's parameter save area. */ | |
300 | write_memory (sp + argoffset, val, len); | |
301 | ||
302 | argoffset += len; | |
303 | } | |
304 | } | |
305 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && len == 16 | |
306 | && !tdep->soft_float) | |
307 | { | |
308 | /* 128-bit decimal floats go in f2 .. f7, always in even/odd | |
309 | pairs. They can end up in memory, using two doublewords. */ | |
310 | ||
311 | if (freg <= 6) | |
312 | { | |
313 | /* Make sure freg is even. */ | |
314 | freg += freg & 1; | |
315 | ||
316 | if (write_pass) | |
317 | { | |
318 | regcache_cooked_write (regcache, | |
319 | tdep->ppc_fp0_regnum + freg, val); | |
320 | regcache_cooked_write (regcache, | |
321 | tdep->ppc_fp0_regnum + freg + 1, val + 8); | |
322 | } | |
323 | } | |
324 | else | |
325 | { | |
326 | argoffset = align_up (argoffset, 8); | |
327 | ||
328 | if (write_pass) | |
329 | write_memory (sp + argoffset, val, 16); | |
330 | ||
331 | argoffset += 16; | |
332 | } | |
333 | ||
334 | /* If a 128-bit decimal float goes to the stack because only f7 | |
335 | and f8 are free (thus there's no even/odd register pair | |
336 | available), these registers should be marked as occupied. | |
337 | Hence we increase freg even when writing to memory. */ | |
338 | freg += 2; | |
339 | } | |
54fcddd0 UW |
340 | else if (len < 16 |
341 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
342 | && TYPE_VECTOR (type) | |
343 | && opencl_abi) | |
344 | { | |
345 | /* OpenCL vectors shorter than 16 bytes are passed as if | |
346 | a series of independent scalars. */ | |
347 | struct type *eltype = check_typedef (TYPE_TARGET_TYPE (type)); | |
348 | int i, nelt = TYPE_LENGTH (type) / TYPE_LENGTH (eltype); | |
349 | ||
350 | for (i = 0; i < nelt; i++) | |
351 | { | |
352 | const gdb_byte *elval = val + i * TYPE_LENGTH (eltype); | |
353 | ||
354 | if (TYPE_CODE (eltype) == TYPE_CODE_FLT && !tdep->soft_float) | |
355 | { | |
356 | if (freg <= 8) | |
357 | { | |
358 | if (write_pass) | |
359 | { | |
360 | int regnum = tdep->ppc_fp0_regnum + freg; | |
361 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
362 | struct type *regtype | |
363 | = register_type (gdbarch, regnum); | |
364 | convert_typed_floating (elval, eltype, | |
365 | regval, regtype); | |
366 | regcache_cooked_write (regcache, regnum, regval); | |
367 | } | |
368 | freg++; | |
369 | } | |
370 | else | |
371 | { | |
372 | argoffset = align_up (argoffset, len); | |
373 | if (write_pass) | |
374 | write_memory (sp + argoffset, val, len); | |
375 | argoffset += len; | |
376 | } | |
377 | } | |
378 | else if (TYPE_LENGTH (eltype) == 8) | |
379 | { | |
380 | if (greg > 9) | |
381 | { | |
382 | /* Just in case GREG was 10. */ | |
383 | greg = 11; | |
384 | argoffset = align_up (argoffset, 8); | |
385 | if (write_pass) | |
386 | write_memory (sp + argoffset, elval, | |
387 | TYPE_LENGTH (eltype)); | |
388 | argoffset += 8; | |
389 | } | |
390 | else | |
391 | { | |
392 | /* Must start on an odd register - r3/r4 etc. */ | |
393 | if ((greg & 1) == 0) | |
394 | greg++; | |
395 | if (write_pass) | |
396 | { | |
397 | int regnum = tdep->ppc_gp0_regnum + greg; | |
398 | regcache_cooked_write (regcache, | |
399 | regnum + 0, elval + 0); | |
400 | regcache_cooked_write (regcache, | |
401 | regnum + 1, elval + 4); | |
402 | } | |
403 | greg += 2; | |
404 | } | |
405 | } | |
406 | else | |
407 | { | |
408 | gdb_byte word[MAX_REGISTER_SIZE]; | |
409 | store_unsigned_integer (word, tdep->wordsize, byte_order, | |
410 | unpack_long (eltype, elval)); | |
411 | ||
412 | if (greg <= 10) | |
413 | { | |
414 | if (write_pass) | |
415 | regcache_cooked_write (regcache, | |
416 | tdep->ppc_gp0_regnum + greg, | |
417 | word); | |
418 | greg++; | |
419 | } | |
420 | else | |
421 | { | |
422 | argoffset = align_up (argoffset, tdep->wordsize); | |
423 | if (write_pass) | |
424 | write_memory (sp + argoffset, word, tdep->wordsize); | |
425 | argoffset += tdep->wordsize; | |
426 | } | |
427 | } | |
428 | } | |
429 | } | |
430 | else if (len >= 16 | |
431 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
432 | && TYPE_VECTOR (type) | |
433 | && opencl_abi) | |
434 | { | |
435 | /* OpenCL vectors 16 bytes or longer are passed as if | |
436 | a series of AltiVec vectors. */ | |
437 | int i; | |
438 | ||
439 | for (i = 0; i < len / 16; i++) | |
440 | { | |
441 | const gdb_byte *elval = val + i * 16; | |
442 | ||
443 | if (vreg <= 13) | |
444 | { | |
445 | if (write_pass) | |
446 | regcache_cooked_write (regcache, | |
447 | tdep->ppc_vr0_regnum + vreg, | |
448 | elval); | |
449 | vreg++; | |
450 | } | |
451 | else | |
452 | { | |
453 | argoffset = align_up (argoffset, 16); | |
454 | if (write_pass) | |
455 | write_memory (sp + argoffset, elval, 16); | |
456 | argoffset += 16; | |
457 | } | |
458 | } | |
459 | } | |
68856ea3 AC |
460 | else if (len == 16 |
461 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
55eddb0f DJ |
462 | && TYPE_VECTOR (type) |
463 | && tdep->vector_abi == POWERPC_VEC_ALTIVEC) | |
7b112f9c | 464 | { |
68856ea3 | 465 | /* Vector parameter passed in an Altivec register, or |
944fcfab | 466 | when that runs out, 16 byte aligned stack location. */ |
7b112f9c JT |
467 | if (vreg <= 13) |
468 | { | |
68856ea3 | 469 | if (write_pass) |
9c9acae0 | 470 | regcache_cooked_write (regcache, |
944fcfab | 471 | tdep->ppc_vr0_regnum + vreg, val); |
7b112f9c JT |
472 | vreg++; |
473 | } | |
474 | else | |
475 | { | |
68856ea3 AC |
476 | argoffset = align_up (argoffset, 16); |
477 | if (write_pass) | |
478 | write_memory (sp + argoffset, val, 16); | |
7b112f9c JT |
479 | argoffset += 16; |
480 | } | |
481 | } | |
944fcfab | 482 | else if (len == 8 |
0a613259 | 483 | && TYPE_CODE (type) == TYPE_CODE_ARRAY |
55eddb0f DJ |
484 | && TYPE_VECTOR (type) |
485 | && tdep->vector_abi == POWERPC_VEC_SPE) | |
944fcfab | 486 | { |
68856ea3 | 487 | /* Vector parameter passed in an e500 register, or when |
944fcfab AC |
488 | that runs out, 8 byte aligned stack location. Note |
489 | that since e500 vector and general purpose registers | |
490 | both map onto the same underlying register set, a | |
491 | "greg" and not a "vreg" is consumed here. A cooked | |
492 | write stores the value in the correct locations | |
493 | within the raw register cache. */ | |
494 | if (greg <= 10) | |
495 | { | |
68856ea3 | 496 | if (write_pass) |
9c9acae0 | 497 | regcache_cooked_write (regcache, |
944fcfab AC |
498 | tdep->ppc_ev0_regnum + greg, val); |
499 | greg++; | |
500 | } | |
501 | else | |
502 | { | |
68856ea3 AC |
503 | argoffset = align_up (argoffset, 8); |
504 | if (write_pass) | |
505 | write_memory (sp + argoffset, val, 8); | |
944fcfab AC |
506 | argoffset += 8; |
507 | } | |
508 | } | |
68856ea3 AC |
509 | else |
510 | { | |
511 | /* Reduce the parameter down to something that fits in a | |
944fcfab | 512 | "word". */ |
50fd1280 | 513 | gdb_byte word[MAX_REGISTER_SIZE]; |
68856ea3 AC |
514 | memset (word, 0, MAX_REGISTER_SIZE); |
515 | if (len > tdep->wordsize | |
516 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
517 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
518 | { | |
55eddb0f | 519 | /* Structs and large values are put in an |
0df8b418 | 520 | aligned stack slot ... */ |
55eddb0f DJ |
521 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY |
522 | && TYPE_VECTOR (type) | |
523 | && len >= 16) | |
524 | structoffset = align_up (structoffset, 16); | |
525 | else | |
526 | structoffset = align_up (structoffset, 8); | |
527 | ||
68856ea3 AC |
528 | if (write_pass) |
529 | write_memory (sp + structoffset, val, len); | |
530 | /* ... and then a "word" pointing to that address is | |
944fcfab | 531 | passed as the parameter. */ |
e17a4113 | 532 | store_unsigned_integer (word, tdep->wordsize, byte_order, |
68856ea3 AC |
533 | sp + structoffset); |
534 | structoffset += len; | |
535 | } | |
536 | else if (TYPE_CODE (type) == TYPE_CODE_INT) | |
537 | /* Sign or zero extend the "int" into a "word". */ | |
e17a4113 | 538 | store_unsigned_integer (word, tdep->wordsize, byte_order, |
68856ea3 AC |
539 | unpack_long (type, val)); |
540 | else | |
541 | /* Always goes in the low address. */ | |
542 | memcpy (word, val, len); | |
543 | /* Store that "word" in a register, or on the stack. | |
944fcfab | 544 | The words have "4" byte alignment. */ |
68856ea3 AC |
545 | if (greg <= 10) |
546 | { | |
547 | if (write_pass) | |
548 | regcache_cooked_write (regcache, | |
944fcfab | 549 | tdep->ppc_gp0_regnum + greg, word); |
68856ea3 AC |
550 | greg++; |
551 | } | |
552 | else | |
553 | { | |
554 | argoffset = align_up (argoffset, tdep->wordsize); | |
555 | if (write_pass) | |
556 | write_memory (sp + argoffset, word, tdep->wordsize); | |
557 | argoffset += tdep->wordsize; | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | /* Compute the actual stack space requirements. */ | |
563 | if (!write_pass) | |
564 | { | |
565 | /* Remember the amount of space needed by the arguments. */ | |
566 | argspace = argoffset; | |
567 | /* Allocate space for both the arguments and the structures. */ | |
568 | sp -= (argoffset + structoffset); | |
569 | /* Ensure that the stack is still 16 byte aligned. */ | |
570 | sp = align_down (sp, 16); | |
571 | } | |
65ada037 MK |
572 | |
573 | /* The psABI says that "A caller of a function that takes a | |
574 | variable argument list shall set condition register bit 6 to | |
575 | 1 if it passes one or more arguments in the floating-point | |
0df8b418 | 576 | registers. It is strongly recommended that the caller set the |
65ada037 MK |
577 | bit to 0 otherwise..." Doing this for normal functions too |
578 | shouldn't hurt. */ | |
579 | if (write_pass) | |
580 | { | |
581 | ULONGEST cr; | |
582 | ||
583 | regcache_cooked_read_unsigned (regcache, tdep->ppc_cr_regnum, &cr); | |
584 | if (freg > 1) | |
585 | cr |= 0x02000000; | |
586 | else | |
587 | cr &= ~0x02000000; | |
588 | regcache_cooked_write_unsigned (regcache, tdep->ppc_cr_regnum, cr); | |
589 | } | |
7b112f9c JT |
590 | } |
591 | ||
68856ea3 | 592 | /* Update %sp. */ |
40a6adc1 | 593 | regcache_cooked_write_signed (regcache, gdbarch_sp_regnum (gdbarch), sp); |
68856ea3 AC |
594 | |
595 | /* Write the backchain (it occupies WORDSIZED bytes). */ | |
e17a4113 | 596 | write_memory_signed_integer (sp, tdep->wordsize, byte_order, saved_sp); |
68856ea3 | 597 | |
e56a0ecc AC |
598 | /* Point the inferior function call's return address at the dummy's |
599 | breakpoint. */ | |
68856ea3 | 600 | regcache_cooked_write_signed (regcache, tdep->ppc_lr_regnum, bp_addr); |
e56a0ecc | 601 | |
7b112f9c JT |
602 | return sp; |
603 | } | |
604 | ||
1300a2f4 TJB |
605 | /* Handle the return-value conventions for Decimal Floating Point values |
606 | in both ppc32 and ppc64, which are the same. */ | |
607 | static int | |
608 | get_decimal_float_return_value (struct gdbarch *gdbarch, struct type *valtype, | |
609 | struct regcache *regcache, gdb_byte *readbuf, | |
610 | const gdb_byte *writebuf) | |
611 | { | |
612 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
613 | ||
614 | gdb_assert (TYPE_CODE (valtype) == TYPE_CODE_DECFLOAT); | |
615 | ||
616 | /* 32-bit and 64-bit decimal floats in f1. */ | |
617 | if (TYPE_LENGTH (valtype) <= 8) | |
618 | { | |
619 | if (writebuf != NULL) | |
620 | { | |
621 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
622 | const gdb_byte *p; | |
623 | ||
624 | /* 32-bit decimal float is right aligned in the doubleword. */ | |
625 | if (TYPE_LENGTH (valtype) == 4) | |
626 | { | |
627 | memcpy (regval + 4, writebuf, 4); | |
628 | p = regval; | |
629 | } | |
630 | else | |
631 | p = writebuf; | |
632 | ||
633 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1, p); | |
634 | } | |
635 | if (readbuf != NULL) | |
636 | { | |
637 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1, readbuf); | |
638 | ||
639 | /* Left align 32-bit decimal float. */ | |
640 | if (TYPE_LENGTH (valtype) == 4) | |
641 | memcpy (readbuf, readbuf + 4, 4); | |
642 | } | |
643 | } | |
644 | /* 128-bit decimal floats in f2,f3. */ | |
645 | else if (TYPE_LENGTH (valtype) == 16) | |
646 | { | |
647 | if (writebuf != NULL || readbuf != NULL) | |
648 | { | |
649 | int i; | |
650 | ||
651 | for (i = 0; i < 2; i++) | |
652 | { | |
653 | if (writebuf != NULL) | |
654 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 2 + i, | |
655 | writebuf + i * 8); | |
656 | if (readbuf != NULL) | |
657 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 2 + i, | |
658 | readbuf + i * 8); | |
659 | } | |
660 | } | |
661 | } | |
662 | else | |
663 | /* Can't happen. */ | |
9b20d036 | 664 | internal_error (__FILE__, __LINE__, _("Unknown decimal float size.")); |
1300a2f4 TJB |
665 | |
666 | return RETURN_VALUE_REGISTER_CONVENTION; | |
667 | } | |
668 | ||
e754ae69 AC |
669 | /* Handle the return-value conventions specified by the SysV 32-bit |
670 | PowerPC ABI (including all the supplements): | |
671 | ||
672 | no floating-point: floating-point values returned using 32-bit | |
673 | general-purpose registers. | |
674 | ||
675 | Altivec: 128-bit vectors returned using vector registers. | |
676 | ||
677 | e500: 64-bit vectors returned using the full full 64 bit EV | |
678 | register, floating-point values returned using 32-bit | |
679 | general-purpose registers. | |
680 | ||
681 | GCC (broken): Small struct values right (instead of left) aligned | |
682 | when returned in general-purpose registers. */ | |
683 | ||
684 | static enum return_value_convention | |
54fcddd0 UW |
685 | do_ppc_sysv_return_value (struct gdbarch *gdbarch, struct type *func_type, |
686 | struct type *type, struct regcache *regcache, | |
687 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
688 | int broken_gcc) | |
e754ae69 | 689 | { |
05580c65 | 690 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
e17a4113 | 691 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
54fcddd0 UW |
692 | int opencl_abi = 0; |
693 | ||
694 | if (func_type | |
695 | && TYPE_CALLING_CONVENTION (func_type) == DW_CC_GDB_IBM_OpenCL) | |
696 | opencl_abi = 1; | |
697 | ||
e754ae69 | 698 | gdb_assert (tdep->wordsize == 4); |
54fcddd0 | 699 | |
e754ae69 AC |
700 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
701 | && TYPE_LENGTH (type) <= 8 | |
55eddb0f | 702 | && !tdep->soft_float) |
e754ae69 | 703 | { |
963e2bb7 | 704 | if (readbuf) |
e754ae69 AC |
705 | { |
706 | /* Floats and doubles stored in "f1". Convert the value to | |
707 | the required type. */ | |
50fd1280 | 708 | gdb_byte regval[MAX_REGISTER_SIZE]; |
366f009f JB |
709 | struct type *regtype = register_type (gdbarch, |
710 | tdep->ppc_fp0_regnum + 1); | |
711 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1, regval); | |
963e2bb7 | 712 | convert_typed_floating (regval, regtype, readbuf, type); |
e754ae69 | 713 | } |
963e2bb7 | 714 | if (writebuf) |
e754ae69 AC |
715 | { |
716 | /* Floats and doubles stored in "f1". Convert the value to | |
717 | the register's "double" type. */ | |
50fd1280 | 718 | gdb_byte regval[MAX_REGISTER_SIZE]; |
366f009f | 719 | struct type *regtype = register_type (gdbarch, tdep->ppc_fp0_regnum); |
963e2bb7 | 720 | convert_typed_floating (writebuf, type, regval, regtype); |
366f009f | 721 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1, regval); |
e754ae69 AC |
722 | } |
723 | return RETURN_VALUE_REGISTER_CONVENTION; | |
724 | } | |
b14d30e1 JM |
725 | if (TYPE_CODE (type) == TYPE_CODE_FLT |
726 | && TYPE_LENGTH (type) == 16 | |
727 | && !tdep->soft_float | |
0df8b418 MS |
728 | && (gdbarch_long_double_format (gdbarch) |
729 | == floatformats_ibm_long_double)) | |
b14d30e1 JM |
730 | { |
731 | /* IBM long double stored in f1 and f2. */ | |
732 | if (readbuf) | |
733 | { | |
734 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1, readbuf); | |
735 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 2, | |
736 | readbuf + 8); | |
737 | } | |
738 | if (writebuf) | |
739 | { | |
740 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1, writebuf); | |
741 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 2, | |
742 | writebuf + 8); | |
743 | } | |
744 | return RETURN_VALUE_REGISTER_CONVENTION; | |
745 | } | |
00fbcec4 JM |
746 | if (TYPE_LENGTH (type) == 16 |
747 | && ((TYPE_CODE (type) == TYPE_CODE_FLT | |
0df8b418 MS |
748 | && (gdbarch_long_double_format (gdbarch) |
749 | == floatformats_ibm_long_double)) | |
00fbcec4 | 750 | || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && tdep->soft_float))) |
b14d30e1 | 751 | { |
00fbcec4 JM |
752 | /* Soft-float IBM long double or _Decimal128 stored in r3, r4, |
753 | r5, r6. */ | |
b14d30e1 JM |
754 | if (readbuf) |
755 | { | |
756 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, readbuf); | |
757 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4, | |
758 | readbuf + 4); | |
759 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 5, | |
760 | readbuf + 8); | |
761 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 6, | |
762 | readbuf + 12); | |
763 | } | |
764 | if (writebuf) | |
765 | { | |
766 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, writebuf); | |
767 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4, | |
768 | writebuf + 4); | |
769 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 5, | |
770 | writebuf + 8); | |
771 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 6, | |
772 | writebuf + 12); | |
773 | } | |
774 | return RETURN_VALUE_REGISTER_CONVENTION; | |
775 | } | |
e754ae69 | 776 | if ((TYPE_CODE (type) == TYPE_CODE_INT && TYPE_LENGTH (type) == 8) |
00fbcec4 JM |
777 | || (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8) |
778 | || (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && TYPE_LENGTH (type) == 8 | |
779 | && tdep->soft_float)) | |
e754ae69 | 780 | { |
963e2bb7 | 781 | if (readbuf) |
e754ae69 | 782 | { |
00fbcec4 JM |
783 | /* A long long, double or _Decimal64 stored in the 32 bit |
784 | r3/r4. */ | |
e754ae69 | 785 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, |
55eddb0f | 786 | readbuf + 0); |
e754ae69 | 787 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4, |
55eddb0f | 788 | readbuf + 4); |
e754ae69 | 789 | } |
963e2bb7 | 790 | if (writebuf) |
e754ae69 | 791 | { |
00fbcec4 JM |
792 | /* A long long, double or _Decimal64 stored in the 32 bit |
793 | r3/r4. */ | |
e754ae69 | 794 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, |
55eddb0f | 795 | writebuf + 0); |
e754ae69 | 796 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4, |
55eddb0f | 797 | writebuf + 4); |
e754ae69 AC |
798 | } |
799 | return RETURN_VALUE_REGISTER_CONVENTION; | |
800 | } | |
1300a2f4 TJB |
801 | if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && !tdep->soft_float) |
802 | return get_decimal_float_return_value (gdbarch, type, regcache, readbuf, | |
803 | writebuf); | |
f0027ce2 DJ |
804 | else if ((TYPE_CODE (type) == TYPE_CODE_INT |
805 | || TYPE_CODE (type) == TYPE_CODE_CHAR | |
806 | || TYPE_CODE (type) == TYPE_CODE_BOOL | |
807 | || TYPE_CODE (type) == TYPE_CODE_PTR | |
808 | || TYPE_CODE (type) == TYPE_CODE_REF | |
809 | || TYPE_CODE (type) == TYPE_CODE_ENUM) | |
810 | && TYPE_LENGTH (type) <= tdep->wordsize) | |
e754ae69 | 811 | { |
963e2bb7 | 812 | if (readbuf) |
e754ae69 AC |
813 | { |
814 | /* Some sort of integer stored in r3. Since TYPE isn't | |
815 | bigger than the register, sign extension isn't a problem | |
816 | - just do everything unsigned. */ | |
817 | ULONGEST regval; | |
818 | regcache_cooked_read_unsigned (regcache, tdep->ppc_gp0_regnum + 3, | |
819 | ®val); | |
e17a4113 UW |
820 | store_unsigned_integer (readbuf, TYPE_LENGTH (type), byte_order, |
821 | regval); | |
e754ae69 | 822 | } |
963e2bb7 | 823 | if (writebuf) |
e754ae69 AC |
824 | { |
825 | /* Some sort of integer stored in r3. Use unpack_long since | |
826 | that should handle any required sign extension. */ | |
827 | regcache_cooked_write_unsigned (regcache, tdep->ppc_gp0_regnum + 3, | |
963e2bb7 | 828 | unpack_long (type, writebuf)); |
e754ae69 AC |
829 | } |
830 | return RETURN_VALUE_REGISTER_CONVENTION; | |
831 | } | |
54fcddd0 UW |
832 | /* OpenCL vectors < 16 bytes are returned as distinct |
833 | scalars in f1..f2 or r3..r10. */ | |
834 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
835 | && TYPE_VECTOR (type) | |
836 | && TYPE_LENGTH (type) < 16 | |
837 | && opencl_abi) | |
838 | { | |
839 | struct type *eltype = check_typedef (TYPE_TARGET_TYPE (type)); | |
840 | int i, nelt = TYPE_LENGTH (type) / TYPE_LENGTH (eltype); | |
841 | ||
842 | for (i = 0; i < nelt; i++) | |
843 | { | |
844 | int offset = i * TYPE_LENGTH (eltype); | |
845 | ||
846 | if (TYPE_CODE (eltype) == TYPE_CODE_FLT) | |
847 | { | |
848 | int regnum = tdep->ppc_fp0_regnum + 1 + i; | |
849 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
850 | struct type *regtype = register_type (gdbarch, regnum); | |
851 | ||
852 | if (writebuf != NULL) | |
853 | { | |
854 | convert_typed_floating (writebuf + offset, eltype, | |
855 | regval, regtype); | |
856 | regcache_cooked_write (regcache, regnum, regval); | |
857 | } | |
858 | if (readbuf != NULL) | |
859 | { | |
860 | regcache_cooked_read (regcache, regnum, regval); | |
861 | convert_typed_floating (regval, regtype, | |
862 | readbuf + offset, eltype); | |
863 | } | |
864 | } | |
865 | else | |
866 | { | |
867 | int regnum = tdep->ppc_gp0_regnum + 3 + i; | |
868 | ULONGEST regval; | |
869 | ||
870 | if (writebuf != NULL) | |
871 | { | |
872 | regval = unpack_long (eltype, writebuf + offset); | |
873 | regcache_cooked_write_unsigned (regcache, regnum, regval); | |
874 | } | |
875 | if (readbuf != NULL) | |
876 | { | |
877 | regcache_cooked_read_unsigned (regcache, regnum, ®val); | |
878 | store_unsigned_integer (readbuf + offset, | |
879 | TYPE_LENGTH (eltype), byte_order, | |
880 | regval); | |
881 | } | |
882 | } | |
883 | } | |
884 | ||
885 | return RETURN_VALUE_REGISTER_CONVENTION; | |
886 | } | |
887 | /* OpenCL vectors >= 16 bytes are returned in v2..v9. */ | |
888 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
889 | && TYPE_VECTOR (type) | |
890 | && TYPE_LENGTH (type) >= 16 | |
891 | && opencl_abi) | |
892 | { | |
893 | int n_regs = TYPE_LENGTH (type) / 16; | |
894 | int i; | |
895 | ||
896 | for (i = 0; i < n_regs; i++) | |
897 | { | |
898 | int offset = i * 16; | |
899 | int regnum = tdep->ppc_vr0_regnum + 2 + i; | |
900 | ||
901 | if (writebuf != NULL) | |
902 | regcache_cooked_write (regcache, regnum, writebuf + offset); | |
903 | if (readbuf != NULL) | |
904 | regcache_cooked_read (regcache, regnum, readbuf + offset); | |
905 | } | |
906 | ||
907 | return RETURN_VALUE_REGISTER_CONVENTION; | |
908 | } | |
e754ae69 AC |
909 | if (TYPE_LENGTH (type) == 16 |
910 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
55eddb0f DJ |
911 | && TYPE_VECTOR (type) |
912 | && tdep->vector_abi == POWERPC_VEC_ALTIVEC) | |
e754ae69 | 913 | { |
963e2bb7 | 914 | if (readbuf) |
e754ae69 AC |
915 | { |
916 | /* Altivec places the return value in "v2". */ | |
963e2bb7 | 917 | regcache_cooked_read (regcache, tdep->ppc_vr0_regnum + 2, readbuf); |
e754ae69 | 918 | } |
963e2bb7 | 919 | if (writebuf) |
e754ae69 AC |
920 | { |
921 | /* Altivec places the return value in "v2". */ | |
963e2bb7 | 922 | regcache_cooked_write (regcache, tdep->ppc_vr0_regnum + 2, writebuf); |
e754ae69 AC |
923 | } |
924 | return RETURN_VALUE_REGISTER_CONVENTION; | |
925 | } | |
55eddb0f DJ |
926 | if (TYPE_LENGTH (type) == 16 |
927 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
928 | && TYPE_VECTOR (type) | |
929 | && tdep->vector_abi == POWERPC_VEC_GENERIC) | |
930 | { | |
931 | /* GCC -maltivec -mabi=no-altivec returns vectors in r3/r4/r5/r6. | |
932 | GCC without AltiVec returns them in memory, but it warns about | |
933 | ABI risks in that case; we don't try to support it. */ | |
934 | if (readbuf) | |
935 | { | |
936 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, | |
937 | readbuf + 0); | |
938 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4, | |
939 | readbuf + 4); | |
940 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 5, | |
941 | readbuf + 8); | |
942 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 6, | |
943 | readbuf + 12); | |
944 | } | |
945 | if (writebuf) | |
946 | { | |
947 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, | |
948 | writebuf + 0); | |
949 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4, | |
950 | writebuf + 4); | |
951 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 5, | |
952 | writebuf + 8); | |
953 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 6, | |
954 | writebuf + 12); | |
955 | } | |
956 | return RETURN_VALUE_REGISTER_CONVENTION; | |
957 | } | |
e754ae69 AC |
958 | if (TYPE_LENGTH (type) == 8 |
959 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
55eddb0f DJ |
960 | && TYPE_VECTOR (type) |
961 | && tdep->vector_abi == POWERPC_VEC_SPE) | |
e754ae69 AC |
962 | { |
963 | /* The e500 ABI places return values for the 64-bit DSP types | |
964 | (__ev64_opaque__) in r3. However, in GDB-speak, ev3 | |
965 | corresponds to the entire r3 value for e500, whereas GDB's r3 | |
966 | only corresponds to the least significant 32-bits. So place | |
967 | the 64-bit DSP type's value in ev3. */ | |
963e2bb7 AC |
968 | if (readbuf) |
969 | regcache_cooked_read (regcache, tdep->ppc_ev0_regnum + 3, readbuf); | |
970 | if (writebuf) | |
971 | regcache_cooked_write (regcache, tdep->ppc_ev0_regnum + 3, writebuf); | |
e754ae69 AC |
972 | return RETURN_VALUE_REGISTER_CONVENTION; |
973 | } | |
974 | if (broken_gcc && TYPE_LENGTH (type) <= 8) | |
975 | { | |
61bf9ae0 MK |
976 | /* GCC screwed up for structures or unions whose size is less |
977 | than or equal to 8 bytes.. Instead of left-aligning, it | |
978 | right-aligns the data into the buffer formed by r3, r4. */ | |
979 | gdb_byte regvals[MAX_REGISTER_SIZE * 2]; | |
980 | int len = TYPE_LENGTH (type); | |
981 | int offset = (2 * tdep->wordsize - len) % tdep->wordsize; | |
982 | ||
963e2bb7 | 983 | if (readbuf) |
e754ae69 | 984 | { |
61bf9ae0 MK |
985 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, |
986 | regvals + 0 * tdep->wordsize); | |
987 | if (len > tdep->wordsize) | |
988 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4, | |
989 | regvals + 1 * tdep->wordsize); | |
990 | memcpy (readbuf, regvals + offset, len); | |
e754ae69 | 991 | } |
963e2bb7 | 992 | if (writebuf) |
e754ae69 | 993 | { |
61bf9ae0 MK |
994 | memset (regvals, 0, sizeof regvals); |
995 | memcpy (regvals + offset, writebuf, len); | |
996 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, | |
997 | regvals + 0 * tdep->wordsize); | |
998 | if (len > tdep->wordsize) | |
999 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4, | |
1000 | regvals + 1 * tdep->wordsize); | |
e754ae69 | 1001 | } |
61bf9ae0 | 1002 | |
e754ae69 AC |
1003 | return RETURN_VALUE_REGISTER_CONVENTION; |
1004 | } | |
1005 | if (TYPE_LENGTH (type) <= 8) | |
1006 | { | |
963e2bb7 | 1007 | if (readbuf) |
e754ae69 AC |
1008 | { |
1009 | /* This matches SVr4 PPC, it does not match GCC. */ | |
1010 | /* The value is right-padded to 8 bytes and then loaded, as | |
1011 | two "words", into r3/r4. */ | |
50fd1280 | 1012 | gdb_byte regvals[MAX_REGISTER_SIZE * 2]; |
e754ae69 AC |
1013 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, |
1014 | regvals + 0 * tdep->wordsize); | |
1015 | if (TYPE_LENGTH (type) > tdep->wordsize) | |
1016 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4, | |
1017 | regvals + 1 * tdep->wordsize); | |
963e2bb7 | 1018 | memcpy (readbuf, regvals, TYPE_LENGTH (type)); |
e754ae69 | 1019 | } |
963e2bb7 | 1020 | if (writebuf) |
e754ae69 AC |
1021 | { |
1022 | /* This matches SVr4 PPC, it does not match GCC. */ | |
1023 | /* The value is padded out to 8 bytes and then loaded, as | |
1024 | two "words" into r3/r4. */ | |
50fd1280 | 1025 | gdb_byte regvals[MAX_REGISTER_SIZE * 2]; |
e754ae69 | 1026 | memset (regvals, 0, sizeof regvals); |
963e2bb7 | 1027 | memcpy (regvals, writebuf, TYPE_LENGTH (type)); |
e754ae69 AC |
1028 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, |
1029 | regvals + 0 * tdep->wordsize); | |
1030 | if (TYPE_LENGTH (type) > tdep->wordsize) | |
1031 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4, | |
1032 | regvals + 1 * tdep->wordsize); | |
1033 | } | |
1034 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1035 | } | |
1036 | return RETURN_VALUE_STRUCT_CONVENTION; | |
1037 | } | |
1038 | ||
05580c65 | 1039 | enum return_value_convention |
c055b101 CV |
1040 | ppc_sysv_abi_return_value (struct gdbarch *gdbarch, struct type *func_type, |
1041 | struct type *valtype, struct regcache *regcache, | |
1042 | gdb_byte *readbuf, const gdb_byte *writebuf) | |
e754ae69 | 1043 | { |
54fcddd0 UW |
1044 | return do_ppc_sysv_return_value (gdbarch, func_type, valtype, regcache, |
1045 | readbuf, writebuf, 0); | |
e754ae69 AC |
1046 | } |
1047 | ||
05580c65 | 1048 | enum return_value_convention |
963e2bb7 | 1049 | ppc_sysv_abi_broken_return_value (struct gdbarch *gdbarch, |
c055b101 | 1050 | struct type *func_type, |
963e2bb7 AC |
1051 | struct type *valtype, |
1052 | struct regcache *regcache, | |
50fd1280 | 1053 | gdb_byte *readbuf, const gdb_byte *writebuf) |
e754ae69 | 1054 | { |
54fcddd0 UW |
1055 | return do_ppc_sysv_return_value (gdbarch, func_type, valtype, regcache, |
1056 | readbuf, writebuf, 1); | |
944fcfab | 1057 | } |
afd48b75 | 1058 | |
b6e1c027 AC |
1059 | /* The helper function for 64-bit SYSV push_dummy_call. Converts the |
1060 | function's code address back into the function's descriptor | |
1061 | address. | |
1062 | ||
1063 | Find a value for the TOC register. Every symbol should have both | |
1064 | ".FN" and "FN" in the minimal symbol table. "FN" points at the | |
1065 | FN's descriptor, while ".FN" points at the entry point (which | |
1066 | matches FUNC_ADDR). Need to reverse from FUNC_ADDR back to the | |
1067 | FN's descriptor address (while at the same time being careful to | |
1068 | find "FN" in the same object file as ".FN"). */ | |
1069 | ||
1070 | static int | |
1071 | convert_code_addr_to_desc_addr (CORE_ADDR code_addr, CORE_ADDR *desc_addr) | |
1072 | { | |
1073 | struct obj_section *dot_fn_section; | |
1074 | struct minimal_symbol *dot_fn; | |
1075 | struct minimal_symbol *fn; | |
1076 | CORE_ADDR toc; | |
1077 | /* Find the minimal symbol that corresponds to CODE_ADDR (should | |
1078 | have a name of the form ".FN"). */ | |
1079 | dot_fn = lookup_minimal_symbol_by_pc (code_addr); | |
1080 | if (dot_fn == NULL || SYMBOL_LINKAGE_NAME (dot_fn)[0] != '.') | |
1081 | return 0; | |
1082 | /* Get the section that contains CODE_ADDR. Need this for the | |
1083 | "objfile" that it contains. */ | |
1084 | dot_fn_section = find_pc_section (code_addr); | |
1085 | if (dot_fn_section == NULL || dot_fn_section->objfile == NULL) | |
1086 | return 0; | |
1087 | /* Now find the corresponding "FN" (dropping ".") minimal symbol's | |
1088 | address. Only look for the minimal symbol in ".FN"'s object file | |
1089 | - avoids problems when two object files (i.e., shared libraries) | |
1090 | contain a minimal symbol with the same name. */ | |
1091 | fn = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (dot_fn) + 1, NULL, | |
1092 | dot_fn_section->objfile); | |
1093 | if (fn == NULL) | |
1094 | return 0; | |
1095 | /* Found a descriptor. */ | |
1096 | (*desc_addr) = SYMBOL_VALUE_ADDRESS (fn); | |
1097 | return 1; | |
1098 | } | |
1099 | ||
0df8b418 | 1100 | /* Pass the arguments in either registers, or in the stack. Using the |
8be9034a AC |
1101 | ppc 64 bit SysV ABI. |
1102 | ||
1103 | This implements a dumbed down version of the ABI. It always writes | |
1104 | values to memory, GPR and FPR, even when not necessary. Doing this | |
0df8b418 | 1105 | greatly simplifies the logic. */ |
8be9034a AC |
1106 | |
1107 | CORE_ADDR | |
0df8b418 MS |
1108 | ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, |
1109 | struct value *function, | |
8be9034a AC |
1110 | struct regcache *regcache, CORE_ADDR bp_addr, |
1111 | int nargs, struct value **args, CORE_ADDR sp, | |
1112 | int struct_return, CORE_ADDR struct_addr) | |
1113 | { | |
7d9b040b | 1114 | CORE_ADDR func_addr = find_function_addr (function, NULL); |
40a6adc1 | 1115 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
e17a4113 | 1116 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
54fcddd0 UW |
1117 | struct type *ftype; |
1118 | int opencl_abi = 0; | |
fb4443d8 | 1119 | ULONGEST back_chain; |
8be9034a AC |
1120 | /* See for-loop comment below. */ |
1121 | int write_pass; | |
24e9cda0 UW |
1122 | /* Size of the by-reference parameter copy region, the final value is |
1123 | computed in the for-loop below. */ | |
1124 | LONGEST refparam_size = 0; | |
8be9034a AC |
1125 | /* Size of the general parameter region, the final value is computed |
1126 | in the for-loop below. */ | |
1127 | LONGEST gparam_size = 0; | |
1128 | /* Kevin writes ... I don't mind seeing tdep->wordsize used in the | |
0df8b418 | 1129 | calls to align_up(), align_down(), etc. because this makes it |
8be9034a AC |
1130 | easier to reuse this code (in a copy/paste sense) in the future, |
1131 | but it is a 64-bit ABI and asserting that the wordsize is 8 bytes | |
1132 | at some point makes it easier to verify that this function is | |
1133 | correct without having to do a non-local analysis to figure out | |
1134 | the possible values of tdep->wordsize. */ | |
1135 | gdb_assert (tdep->wordsize == 8); | |
1136 | ||
55eddb0f DJ |
1137 | /* This function exists to support a calling convention that |
1138 | requires floating-point registers. It shouldn't be used on | |
1139 | processors that lack them. */ | |
1140 | gdb_assert (ppc_floating_point_unit_p (gdbarch)); | |
1141 | ||
fb4443d8 UW |
1142 | /* By this stage in the proceedings, SP has been decremented by "red |
1143 | zone size" + "struct return size". Fetch the stack-pointer from | |
1144 | before this and use that as the BACK_CHAIN. */ | |
40a6adc1 | 1145 | regcache_cooked_read_unsigned (regcache, gdbarch_sp_regnum (gdbarch), |
3e8c568d | 1146 | &back_chain); |
fb4443d8 | 1147 | |
54fcddd0 UW |
1148 | ftype = check_typedef (value_type (function)); |
1149 | if (TYPE_CODE (ftype) == TYPE_CODE_PTR) | |
1150 | ftype = check_typedef (TYPE_TARGET_TYPE (ftype)); | |
1151 | if (TYPE_CODE (ftype) == TYPE_CODE_FUNC | |
1152 | && TYPE_CALLING_CONVENTION (ftype) == DW_CC_GDB_IBM_OpenCL) | |
1153 | opencl_abi = 1; | |
1154 | ||
8be9034a AC |
1155 | /* Go through the argument list twice. |
1156 | ||
1157 | Pass 1: Compute the function call's stack space and register | |
1158 | requirements. | |
1159 | ||
1160 | Pass 2: Replay the same computation but this time also write the | |
1161 | values out to the target. */ | |
1162 | ||
1163 | for (write_pass = 0; write_pass < 2; write_pass++) | |
1164 | { | |
1165 | int argno; | |
1166 | /* Next available floating point register for float and double | |
1167 | arguments. */ | |
1168 | int freg = 1; | |
1169 | /* Next available general register for non-vector (but possibly | |
1170 | float) arguments. */ | |
1171 | int greg = 3; | |
1172 | /* Next available vector register for vector arguments. */ | |
1173 | int vreg = 2; | |
1174 | /* The address, at which the next general purpose parameter | |
d6dafb7c | 1175 | (integer, struct, float, vector, ...) should be saved. */ |
8be9034a | 1176 | CORE_ADDR gparam; |
24e9cda0 UW |
1177 | /* The address, at which the next by-reference parameter |
1178 | (non-Altivec vector, variably-sized type) should be saved. */ | |
1179 | CORE_ADDR refparam; | |
8be9034a AC |
1180 | |
1181 | if (!write_pass) | |
1182 | { | |
24e9cda0 UW |
1183 | /* During the first pass, GPARAM and REFPARAM are more like |
1184 | offsets (start address zero) than addresses. That way | |
1185 | they accumulate the total stack space each region | |
1186 | requires. */ | |
8be9034a | 1187 | gparam = 0; |
24e9cda0 | 1188 | refparam = 0; |
8be9034a AC |
1189 | } |
1190 | else | |
1191 | { | |
24e9cda0 UW |
1192 | /* Decrement the stack pointer making space for the Altivec |
1193 | and general on-stack parameters. Set refparam and gparam | |
1194 | to their corresponding regions. */ | |
1195 | refparam = align_down (sp - refparam_size, 16); | |
1196 | gparam = align_down (refparam - gparam_size, 16); | |
8be9034a AC |
1197 | /* Add in space for the TOC, link editor double word, |
1198 | compiler double word, LR save area, CR save area. */ | |
1199 | sp = align_down (gparam - 48, 16); | |
1200 | } | |
1201 | ||
1202 | /* If the function is returning a `struct', then there is an | |
1203 | extra hidden parameter (which will be passed in r3) | |
1204 | containing the address of that struct.. In that case we | |
1205 | should advance one word and start from r4 register to copy | |
1206 | parameters. This also consumes one on-stack parameter slot. */ | |
1207 | if (struct_return) | |
1208 | { | |
1209 | if (write_pass) | |
1210 | regcache_cooked_write_signed (regcache, | |
1211 | tdep->ppc_gp0_regnum + greg, | |
1212 | struct_addr); | |
1213 | greg++; | |
1214 | gparam = align_up (gparam + tdep->wordsize, tdep->wordsize); | |
1215 | } | |
1216 | ||
1217 | for (argno = 0; argno < nargs; argno++) | |
1218 | { | |
1219 | struct value *arg = args[argno]; | |
df407dfe | 1220 | struct type *type = check_typedef (value_type (arg)); |
0fd88904 | 1221 | const bfd_byte *val = value_contents (arg); |
ce0451ad | 1222 | |
8be9034a AC |
1223 | if (TYPE_CODE (type) == TYPE_CODE_FLT && TYPE_LENGTH (type) <= 8) |
1224 | { | |
1225 | /* Floats and Doubles go in f1 .. f13. They also | |
1226 | consume a left aligned GREG,, and can end up in | |
1227 | memory. */ | |
1228 | if (write_pass) | |
1229 | { | |
ce0451ad TJB |
1230 | gdb_byte regval[MAX_REGISTER_SIZE]; |
1231 | const gdb_byte *p; | |
1232 | ||
1233 | /* Version 1.7 of the 64-bit PowerPC ELF ABI says: | |
1234 | ||
1235 | "Single precision floating point values are mapped to | |
1236 | the first word in a single doubleword." | |
1237 | ||
1238 | And version 1.9 says: | |
1239 | ||
1240 | "Single precision floating point values are mapped to | |
1241 | the second word in a single doubleword." | |
1242 | ||
1243 | GDB then writes single precision floating point values | |
1244 | at both words in a doubleword, to support both ABIs. */ | |
1245 | if (TYPE_LENGTH (type) == 4) | |
1246 | { | |
1247 | memcpy (regval, val, 4); | |
1248 | memcpy (regval + 4, val, 4); | |
1249 | p = regval; | |
1250 | } | |
1251 | else | |
1252 | p = val; | |
1253 | ||
1254 | /* Write value in the stack's parameter save area. */ | |
1255 | write_memory (gparam, p, 8); | |
1256 | ||
55eddb0f | 1257 | if (freg <= 13) |
8be9034a | 1258 | { |
366f009f JB |
1259 | struct type *regtype |
1260 | = register_type (gdbarch, tdep->ppc_fp0_regnum); | |
ce0451ad | 1261 | |
8be9034a | 1262 | convert_typed_floating (val, type, regval, regtype); |
366f009f JB |
1263 | regcache_cooked_write (regcache, |
1264 | tdep->ppc_fp0_regnum + freg, | |
8be9034a AC |
1265 | regval); |
1266 | } | |
1267 | if (greg <= 10) | |
ce0451ad TJB |
1268 | regcache_cooked_write (regcache, |
1269 | tdep->ppc_gp0_regnum + greg, | |
1270 | regval); | |
8be9034a | 1271 | } |
ce0451ad | 1272 | |
8be9034a AC |
1273 | freg++; |
1274 | greg++; | |
ce0451ad TJB |
1275 | /* Always consume parameter stack space. */ |
1276 | gparam = align_up (gparam + 8, tdep->wordsize); | |
8be9034a | 1277 | } |
b14d30e1 JM |
1278 | else if (TYPE_CODE (type) == TYPE_CODE_FLT |
1279 | && TYPE_LENGTH (type) == 16 | |
40a6adc1 | 1280 | && (gdbarch_long_double_format (gdbarch) |
b14d30e1 JM |
1281 | == floatformats_ibm_long_double)) |
1282 | { | |
1283 | /* IBM long double stored in two doublewords of the | |
1284 | parameter save area and corresponding registers. */ | |
1285 | if (write_pass) | |
1286 | { | |
1287 | if (!tdep->soft_float && freg <= 13) | |
1288 | { | |
1289 | regcache_cooked_write (regcache, | |
1290 | tdep->ppc_fp0_regnum + freg, | |
1291 | val); | |
1292 | if (freg <= 12) | |
1293 | regcache_cooked_write (regcache, | |
1294 | tdep->ppc_fp0_regnum + freg + 1, | |
1295 | val + 8); | |
1296 | } | |
1297 | if (greg <= 10) | |
1298 | { | |
1299 | regcache_cooked_write (regcache, | |
1300 | tdep->ppc_gp0_regnum + greg, | |
1301 | val); | |
1302 | if (greg <= 9) | |
1303 | regcache_cooked_write (regcache, | |
1304 | tdep->ppc_gp0_regnum + greg + 1, | |
1305 | val + 8); | |
1306 | } | |
1307 | write_memory (gparam, val, TYPE_LENGTH (type)); | |
1308 | } | |
1309 | freg += 2; | |
1310 | greg += 2; | |
1311 | gparam = align_up (gparam + TYPE_LENGTH (type), tdep->wordsize); | |
1312 | } | |
1300a2f4 TJB |
1313 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT |
1314 | && TYPE_LENGTH (type) <= 8) | |
1315 | { | |
1316 | /* 32-bit and 64-bit decimal floats go in f1 .. f13. They can | |
1317 | end up in memory. */ | |
1318 | if (write_pass) | |
1319 | { | |
1320 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
1321 | const gdb_byte *p; | |
1322 | ||
1323 | /* 32-bit decimal floats are right aligned in the | |
1324 | doubleword. */ | |
1325 | if (TYPE_LENGTH (type) == 4) | |
1326 | { | |
1327 | memcpy (regval + 4, val, 4); | |
1328 | p = regval; | |
1329 | } | |
1330 | else | |
1331 | p = val; | |
1332 | ||
1333 | /* Write value in the stack's parameter save area. */ | |
1334 | write_memory (gparam, p, 8); | |
1335 | ||
1336 | if (freg <= 13) | |
1337 | regcache_cooked_write (regcache, | |
1338 | tdep->ppc_fp0_regnum + freg, p); | |
1339 | } | |
1340 | ||
1341 | freg++; | |
1342 | greg++; | |
1343 | /* Always consume parameter stack space. */ | |
1344 | gparam = align_up (gparam + 8, tdep->wordsize); | |
1345 | } | |
1346 | else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT && | |
1347 | TYPE_LENGTH (type) == 16) | |
1348 | { | |
1349 | /* 128-bit decimal floats go in f2 .. f12, always in even/odd | |
1350 | pairs. They can end up in memory, using two doublewords. */ | |
1351 | if (write_pass) | |
1352 | { | |
1353 | if (freg <= 12) | |
1354 | { | |
1355 | /* Make sure freg is even. */ | |
1356 | freg += freg & 1; | |
1357 | regcache_cooked_write (regcache, | |
1358 | tdep->ppc_fp0_regnum + freg, val); | |
1359 | regcache_cooked_write (regcache, | |
1360 | tdep->ppc_fp0_regnum + freg + 1, val + 8); | |
1361 | } | |
1362 | ||
1363 | write_memory (gparam, val, TYPE_LENGTH (type)); | |
1364 | } | |
1365 | ||
1366 | freg += 2; | |
1367 | greg += 2; | |
1368 | gparam = align_up (gparam + TYPE_LENGTH (type), tdep->wordsize); | |
1369 | } | |
54fcddd0 UW |
1370 | else if (TYPE_LENGTH (type) < 16 |
1371 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
1372 | && TYPE_VECTOR (type) | |
1373 | && opencl_abi) | |
1374 | { | |
1375 | /* OpenCL vectors shorter than 16 bytes are passed as if | |
1376 | a series of independent scalars. */ | |
1377 | struct type *eltype = check_typedef (TYPE_TARGET_TYPE (type)); | |
1378 | int i, nelt = TYPE_LENGTH (type) / TYPE_LENGTH (eltype); | |
1379 | ||
1380 | for (i = 0; i < nelt; i++) | |
1381 | { | |
1382 | const gdb_byte *elval = val + i * TYPE_LENGTH (eltype); | |
1383 | ||
1384 | if (TYPE_CODE (eltype) == TYPE_CODE_FLT) | |
1385 | { | |
1386 | if (write_pass) | |
1387 | { | |
1388 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
1389 | const gdb_byte *p; | |
1390 | ||
1391 | if (TYPE_LENGTH (eltype) == 4) | |
1392 | { | |
1393 | memcpy (regval, elval, 4); | |
1394 | memcpy (regval + 4, elval, 4); | |
1395 | p = regval; | |
1396 | } | |
1397 | else | |
1398 | p = elval; | |
1399 | ||
1400 | write_memory (gparam, p, 8); | |
1401 | ||
1402 | if (freg <= 13) | |
1403 | { | |
1404 | int regnum = tdep->ppc_fp0_regnum + freg; | |
1405 | struct type *regtype | |
1406 | = register_type (gdbarch, regnum); | |
1407 | ||
1408 | convert_typed_floating (elval, eltype, | |
1409 | regval, regtype); | |
1410 | regcache_cooked_write (regcache, regnum, regval); | |
1411 | } | |
1412 | ||
1413 | if (greg <= 10) | |
1414 | regcache_cooked_write (regcache, | |
1415 | tdep->ppc_gp0_regnum + greg, | |
1416 | regval); | |
1417 | } | |
1418 | ||
1419 | freg++; | |
1420 | greg++; | |
1421 | gparam = align_up (gparam + 8, tdep->wordsize); | |
1422 | } | |
1423 | else | |
1424 | { | |
1425 | if (write_pass) | |
1426 | { | |
1427 | ULONGEST word = unpack_long (eltype, elval); | |
1428 | if (greg <= 10) | |
1429 | regcache_cooked_write_unsigned | |
1430 | (regcache, tdep->ppc_gp0_regnum + greg, word); | |
1431 | ||
1432 | write_memory_unsigned_integer | |
1433 | (gparam, tdep->wordsize, byte_order, word); | |
1434 | } | |
1435 | ||
1436 | greg++; | |
1437 | gparam = align_up (gparam + TYPE_LENGTH (eltype), | |
1438 | tdep->wordsize); | |
1439 | } | |
1440 | } | |
1441 | } | |
1442 | else if (TYPE_LENGTH (type) >= 16 | |
1443 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
1444 | && TYPE_VECTOR (type) | |
1445 | && opencl_abi) | |
1446 | { | |
1447 | /* OpenCL vectors 16 bytes or longer are passed as if | |
1448 | a series of AltiVec vectors. */ | |
1449 | int i; | |
1450 | ||
1451 | for (i = 0; i < TYPE_LENGTH (type) / 16; i++) | |
1452 | { | |
1453 | const gdb_byte *elval = val + i * 16; | |
1454 | ||
1455 | gparam = align_up (gparam, 16); | |
1456 | greg += greg & 1; | |
1457 | ||
1458 | if (write_pass) | |
1459 | { | |
1460 | if (vreg <= 13) | |
1461 | regcache_cooked_write (regcache, | |
1462 | tdep->ppc_vr0_regnum + vreg, | |
1463 | elval); | |
1464 | ||
1465 | write_memory (gparam, elval, 16); | |
1466 | } | |
1467 | ||
1468 | greg += 2; | |
1469 | vreg++; | |
1470 | gparam += 16; | |
1471 | } | |
1472 | } | |
8be9034a AC |
1473 | else if (TYPE_LENGTH (type) == 16 && TYPE_VECTOR (type) |
1474 | && TYPE_CODE (type) == TYPE_CODE_ARRAY | |
24e9cda0 | 1475 | && tdep->vector_abi == POWERPC_VEC_ALTIVEC) |
8be9034a | 1476 | { |
d6dafb7c UW |
1477 | /* In the Altivec ABI, vectors go in the vector registers |
1478 | v2 .. v13, as well as the parameter area -- always at | |
1479 | 16-byte aligned addresses. */ | |
1480 | ||
1481 | gparam = align_up (gparam, 16); | |
1482 | greg += greg & 1; | |
1483 | ||
1484 | if (write_pass) | |
8be9034a | 1485 | { |
d6dafb7c | 1486 | if (vreg <= 13) |
8be9034a AC |
1487 | regcache_cooked_write (regcache, |
1488 | tdep->ppc_vr0_regnum + vreg, val); | |
d6dafb7c UW |
1489 | |
1490 | write_memory (gparam, val, TYPE_LENGTH (type)); | |
8be9034a | 1491 | } |
d6dafb7c UW |
1492 | |
1493 | greg += 2; | |
1494 | vreg++; | |
1495 | gparam += 16; | |
8be9034a | 1496 | } |
24e9cda0 UW |
1497 | else if (TYPE_LENGTH (type) >= 16 && TYPE_VECTOR (type) |
1498 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
1499 | { | |
1500 | /* Non-Altivec vectors are passed by reference. */ | |
1501 | ||
1502 | /* Copy value onto the stack ... */ | |
1503 | refparam = align_up (refparam, 16); | |
1504 | if (write_pass) | |
1505 | write_memory (refparam, val, TYPE_LENGTH (type)); | |
1506 | ||
1507 | /* ... and pass a pointer to the copy as parameter. */ | |
1508 | if (write_pass) | |
1509 | { | |
1510 | if (greg <= 10) | |
1511 | regcache_cooked_write_unsigned (regcache, | |
1512 | tdep->ppc_gp0_regnum + | |
1513 | greg, refparam); | |
1514 | write_memory_unsigned_integer (gparam, tdep->wordsize, | |
1515 | byte_order, refparam); | |
1516 | } | |
1517 | greg++; | |
1518 | gparam = align_up (gparam + tdep->wordsize, tdep->wordsize); | |
1519 | refparam = align_up (refparam + TYPE_LENGTH (type), tdep->wordsize); | |
1520 | } | |
8be9034a | 1521 | else if ((TYPE_CODE (type) == TYPE_CODE_INT |
b6e1c027 | 1522 | || TYPE_CODE (type) == TYPE_CODE_ENUM |
93d4208d UW |
1523 | || TYPE_CODE (type) == TYPE_CODE_BOOL |
1524 | || TYPE_CODE (type) == TYPE_CODE_CHAR | |
1525 | || TYPE_CODE (type) == TYPE_CODE_PTR | |
1526 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
8be9034a AC |
1527 | && TYPE_LENGTH (type) <= 8) |
1528 | { | |
b6e1c027 AC |
1529 | /* Scalars and Pointers get sign[un]extended and go in |
1530 | gpr3 .. gpr10. They can also end up in memory. */ | |
8be9034a AC |
1531 | if (write_pass) |
1532 | { | |
1533 | /* Sign extend the value, then store it unsigned. */ | |
1534 | ULONGEST word = unpack_long (type, val); | |
b6e1c027 AC |
1535 | /* Convert any function code addresses into |
1536 | descriptors. */ | |
1537 | if (TYPE_CODE (type) == TYPE_CODE_PTR | |
93d4208d | 1538 | || TYPE_CODE (type) == TYPE_CODE_REF) |
b6e1c027 | 1539 | { |
93d4208d UW |
1540 | struct type *target_type; |
1541 | target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1542 | ||
1543 | if (TYPE_CODE (target_type) == TYPE_CODE_FUNC | |
1544 | || TYPE_CODE (target_type) == TYPE_CODE_METHOD) | |
1545 | { | |
1546 | CORE_ADDR desc = word; | |
1547 | convert_code_addr_to_desc_addr (word, &desc); | |
1548 | word = desc; | |
1549 | } | |
b6e1c027 | 1550 | } |
8be9034a AC |
1551 | if (greg <= 10) |
1552 | regcache_cooked_write_unsigned (regcache, | |
1553 | tdep->ppc_gp0_regnum + | |
1554 | greg, word); | |
1555 | write_memory_unsigned_integer (gparam, tdep->wordsize, | |
e17a4113 | 1556 | byte_order, word); |
8be9034a AC |
1557 | } |
1558 | greg++; | |
1559 | gparam = align_up (gparam + TYPE_LENGTH (type), tdep->wordsize); | |
1560 | } | |
1561 | else | |
1562 | { | |
1563 | int byte; | |
1564 | for (byte = 0; byte < TYPE_LENGTH (type); | |
1565 | byte += tdep->wordsize) | |
1566 | { | |
1567 | if (write_pass && greg <= 10) | |
1568 | { | |
50fd1280 | 1569 | gdb_byte regval[MAX_REGISTER_SIZE]; |
8be9034a AC |
1570 | int len = TYPE_LENGTH (type) - byte; |
1571 | if (len > tdep->wordsize) | |
1572 | len = tdep->wordsize; | |
1573 | memset (regval, 0, sizeof regval); | |
36815e57 JM |
1574 | /* The ABI (version 1.9) specifies that values |
1575 | smaller than one doubleword are right-aligned | |
1576 | and those larger are left-aligned. GCC | |
1577 | versions before 3.4 implemented this | |
1578 | incorrectly; see | |
1579 | <http://gcc.gnu.org/gcc-3.4/powerpc-abi.html>. */ | |
1580 | if (byte == 0) | |
8be9034a AC |
1581 | memcpy (regval + tdep->wordsize - len, |
1582 | val + byte, len); | |
36815e57 JM |
1583 | else |
1584 | memcpy (regval, val + byte, len); | |
8be9034a AC |
1585 | regcache_cooked_write (regcache, greg, regval); |
1586 | } | |
1587 | greg++; | |
1588 | } | |
1589 | if (write_pass) | |
93d4208d UW |
1590 | { |
1591 | /* WARNING: cagney/2003-09-21: Strictly speaking, this | |
1592 | isn't necessary, unfortunately, GCC appears to get | |
1593 | "struct convention" parameter passing wrong putting | |
1594 | odd sized structures in memory instead of in a | |
1595 | register. Work around this by always writing the | |
1596 | value to memory. Fortunately, doing this | |
1597 | simplifies the code. */ | |
1598 | int len = TYPE_LENGTH (type); | |
1599 | if (len < tdep->wordsize) | |
1600 | write_memory (gparam + tdep->wordsize - len, val, len); | |
1601 | else | |
1602 | write_memory (gparam, val, len); | |
1603 | } | |
36815e57 JM |
1604 | if (freg <= 13 |
1605 | && TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1606 | && TYPE_NFIELDS (type) == 1 | |
1607 | && TYPE_LENGTH (type) <= 16) | |
1608 | { | |
1609 | /* The ABI (version 1.9) specifies that structs | |
1610 | containing a single floating-point value, at any | |
1611 | level of nesting of single-member structs, are | |
1612 | passed in floating-point registers. */ | |
1613 | while (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1614 | && TYPE_NFIELDS (type) == 1) | |
1615 | type = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
1616 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
1617 | { | |
1618 | if (TYPE_LENGTH (type) <= 8) | |
1619 | { | |
1620 | if (write_pass) | |
1621 | { | |
1622 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
1623 | struct type *regtype | |
1624 | = register_type (gdbarch, | |
1625 | tdep->ppc_fp0_regnum); | |
1626 | convert_typed_floating (val, type, regval, | |
1627 | regtype); | |
1628 | regcache_cooked_write (regcache, | |
1629 | (tdep->ppc_fp0_regnum | |
1630 | + freg), | |
1631 | regval); | |
1632 | } | |
1633 | freg++; | |
1634 | } | |
1635 | else if (TYPE_LENGTH (type) == 16 | |
40a6adc1 | 1636 | && (gdbarch_long_double_format (gdbarch) |
36815e57 JM |
1637 | == floatformats_ibm_long_double)) |
1638 | { | |
1639 | if (write_pass) | |
1640 | { | |
1641 | regcache_cooked_write (regcache, | |
1642 | (tdep->ppc_fp0_regnum | |
1643 | + freg), | |
1644 | val); | |
1645 | if (freg <= 12) | |
1646 | regcache_cooked_write (regcache, | |
1647 | (tdep->ppc_fp0_regnum | |
1648 | + freg + 1), | |
1649 | val + 8); | |
1650 | } | |
1651 | freg += 2; | |
1652 | } | |
1653 | } | |
1654 | } | |
8be9034a AC |
1655 | /* Always consume parameter stack space. */ |
1656 | gparam = align_up (gparam + TYPE_LENGTH (type), tdep->wordsize); | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | if (!write_pass) | |
1661 | { | |
24e9cda0 UW |
1662 | /* Save the true region sizes ready for the second pass. */ |
1663 | refparam_size = refparam; | |
1664 | /* Make certain that the general parameter save area is at | |
8be9034a AC |
1665 | least the minimum 8 registers (or doublewords) in size. */ |
1666 | if (greg < 8) | |
1667 | gparam_size = 8 * tdep->wordsize; | |
1668 | else | |
1669 | gparam_size = gparam; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | /* Update %sp. */ | |
40a6adc1 | 1674 | regcache_cooked_write_signed (regcache, gdbarch_sp_regnum (gdbarch), sp); |
8be9034a AC |
1675 | |
1676 | /* Write the backchain (it occupies WORDSIZED bytes). */ | |
e17a4113 | 1677 | write_memory_signed_integer (sp, tdep->wordsize, byte_order, back_chain); |
8be9034a AC |
1678 | |
1679 | /* Point the inferior function call's return address at the dummy's | |
1680 | breakpoint. */ | |
1681 | regcache_cooked_write_signed (regcache, tdep->ppc_lr_regnum, bp_addr); | |
1682 | ||
b6e1c027 | 1683 | /* Use the func_addr to find the descriptor, and use that to find |
69368a60 UW |
1684 | the TOC. If we're calling via a function pointer, the pointer |
1685 | itself identifies the descriptor. */ | |
8be9034a | 1686 | { |
69368a60 UW |
1687 | struct type *ftype = check_typedef (value_type (function)); |
1688 | CORE_ADDR desc_addr = value_as_address (function); | |
1689 | ||
1690 | if (TYPE_CODE (ftype) == TYPE_CODE_PTR | |
1691 | || convert_code_addr_to_desc_addr (func_addr, &desc_addr)) | |
8be9034a | 1692 | { |
b6e1c027 AC |
1693 | /* The TOC is the second double word in the descriptor. */ |
1694 | CORE_ADDR toc = | |
1695 | read_memory_unsigned_integer (desc_addr + tdep->wordsize, | |
e17a4113 | 1696 | tdep->wordsize, byte_order); |
b6e1c027 AC |
1697 | regcache_cooked_write_unsigned (regcache, |
1698 | tdep->ppc_gp0_regnum + 2, toc); | |
8be9034a AC |
1699 | } |
1700 | } | |
1701 | ||
1702 | return sp; | |
1703 | } | |
1704 | ||
afd48b75 | 1705 | |
55eddb0f | 1706 | /* The 64 bit ABI return value convention. |
afd48b75 AC |
1707 | |
1708 | Return non-zero if the return-value is stored in a register, return | |
1709 | 0 if the return-value is instead stored on the stack (a.k.a., | |
1710 | struct return convention). | |
1711 | ||
963e2bb7 | 1712 | For a return-value stored in a register: when WRITEBUF is non-NULL, |
afd48b75 | 1713 | copy the buffer to the corresponding register return-value location |
963e2bb7 | 1714 | location; when READBUF is non-NULL, fill the buffer from the |
afd48b75 | 1715 | corresponding register return-value location. */ |
05580c65 | 1716 | enum return_value_convention |
c055b101 CV |
1717 | ppc64_sysv_abi_return_value (struct gdbarch *gdbarch, struct type *func_type, |
1718 | struct type *valtype, struct regcache *regcache, | |
1719 | gdb_byte *readbuf, const gdb_byte *writebuf) | |
afd48b75 | 1720 | { |
05580c65 | 1721 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
e17a4113 | 1722 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
54fcddd0 UW |
1723 | int opencl_abi = 0; |
1724 | ||
1725 | if (func_type | |
1726 | && TYPE_CALLING_CONVENTION (func_type) == DW_CC_GDB_IBM_OpenCL) | |
1727 | opencl_abi = 1; | |
16796152 JB |
1728 | |
1729 | /* This function exists to support a calling convention that | |
1730 | requires floating-point registers. It shouldn't be used on | |
1731 | processors that lack them. */ | |
1732 | gdb_assert (ppc_floating_point_unit_p (gdbarch)); | |
1733 | ||
afd48b75 | 1734 | /* Floats and doubles in F1. */ |
944fcfab | 1735 | if (TYPE_CODE (valtype) == TYPE_CODE_FLT && TYPE_LENGTH (valtype) <= 8) |
afd48b75 | 1736 | { |
50fd1280 | 1737 | gdb_byte regval[MAX_REGISTER_SIZE]; |
366f009f | 1738 | struct type *regtype = register_type (gdbarch, tdep->ppc_fp0_regnum); |
963e2bb7 | 1739 | if (writebuf != NULL) |
afd48b75 | 1740 | { |
963e2bb7 | 1741 | convert_typed_floating (writebuf, valtype, regval, regtype); |
366f009f | 1742 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1, regval); |
afd48b75 | 1743 | } |
963e2bb7 | 1744 | if (readbuf != NULL) |
afd48b75 | 1745 | { |
366f009f | 1746 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1, regval); |
963e2bb7 | 1747 | convert_typed_floating (regval, regtype, readbuf, valtype); |
afd48b75 AC |
1748 | } |
1749 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1750 | } | |
1300a2f4 TJB |
1751 | if (TYPE_CODE (valtype) == TYPE_CODE_DECFLOAT) |
1752 | return get_decimal_float_return_value (gdbarch, valtype, regcache, readbuf, | |
1753 | writebuf); | |
3d8476bc | 1754 | /* Integers in r3. */ |
b6e1c027 | 1755 | if ((TYPE_CODE (valtype) == TYPE_CODE_INT |
93d4208d UW |
1756 | || TYPE_CODE (valtype) == TYPE_CODE_ENUM |
1757 | || TYPE_CODE (valtype) == TYPE_CODE_CHAR | |
1758 | || TYPE_CODE (valtype) == TYPE_CODE_BOOL) | |
b6e1c027 | 1759 | && TYPE_LENGTH (valtype) <= 8) |
afd48b75 | 1760 | { |
963e2bb7 | 1761 | if (writebuf != NULL) |
afd48b75 AC |
1762 | { |
1763 | /* Be careful to sign extend the value. */ | |
1764 | regcache_cooked_write_unsigned (regcache, tdep->ppc_gp0_regnum + 3, | |
963e2bb7 | 1765 | unpack_long (valtype, writebuf)); |
afd48b75 | 1766 | } |
963e2bb7 | 1767 | if (readbuf != NULL) |
afd48b75 AC |
1768 | { |
1769 | /* Extract the integer from r3. Since this is truncating the | |
1770 | value, there isn't a sign extension problem. */ | |
1771 | ULONGEST regval; | |
1772 | regcache_cooked_read_unsigned (regcache, tdep->ppc_gp0_regnum + 3, | |
1773 | ®val); | |
e17a4113 UW |
1774 | store_unsigned_integer (readbuf, TYPE_LENGTH (valtype), byte_order, |
1775 | regval); | |
afd48b75 AC |
1776 | } |
1777 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1778 | } | |
1779 | /* All pointers live in r3. */ | |
93d4208d UW |
1780 | if (TYPE_CODE (valtype) == TYPE_CODE_PTR |
1781 | || TYPE_CODE (valtype) == TYPE_CODE_REF) | |
afd48b75 AC |
1782 | { |
1783 | /* All pointers live in r3. */ | |
963e2bb7 AC |
1784 | if (writebuf != NULL) |
1785 | regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, writebuf); | |
1786 | if (readbuf != NULL) | |
1787 | regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, readbuf); | |
afd48b75 AC |
1788 | return RETURN_VALUE_REGISTER_CONVENTION; |
1789 | } | |
54fcddd0 UW |
1790 | /* OpenCL vectors < 16 bytes are returned as distinct |
1791 | scalars in f1..f2 or r3..r10. */ | |
1792 | if (TYPE_CODE (valtype) == TYPE_CODE_ARRAY | |
1793 | && TYPE_VECTOR (valtype) | |
1794 | && TYPE_LENGTH (valtype) < 16 | |
1795 | && opencl_abi) | |
1796 | { | |
1797 | struct type *eltype = check_typedef (TYPE_TARGET_TYPE (valtype)); | |
1798 | int i, nelt = TYPE_LENGTH (valtype) / TYPE_LENGTH (eltype); | |
1799 | ||
1800 | for (i = 0; i < nelt; i++) | |
1801 | { | |
1802 | int offset = i * TYPE_LENGTH (eltype); | |
1803 | ||
1804 | if (TYPE_CODE (eltype) == TYPE_CODE_FLT) | |
1805 | { | |
1806 | int regnum = tdep->ppc_fp0_regnum + 1 + i; | |
1807 | gdb_byte regval[MAX_REGISTER_SIZE]; | |
1808 | struct type *regtype = register_type (gdbarch, regnum); | |
1809 | ||
1810 | if (writebuf != NULL) | |
1811 | { | |
1812 | convert_typed_floating (writebuf + offset, eltype, | |
1813 | regval, regtype); | |
1814 | regcache_cooked_write (regcache, regnum, regval); | |
1815 | } | |
1816 | if (readbuf != NULL) | |
1817 | { | |
1818 | regcache_cooked_read (regcache, regnum, regval); | |
1819 | convert_typed_floating (regval, regtype, | |
1820 | readbuf + offset, eltype); | |
1821 | } | |
1822 | } | |
1823 | else | |
1824 | { | |
1825 | int regnum = tdep->ppc_gp0_regnum + 3 + i; | |
1826 | ULONGEST regval; | |
1827 | ||
1828 | if (writebuf != NULL) | |
1829 | { | |
1830 | regval = unpack_long (eltype, writebuf + offset); | |
1831 | regcache_cooked_write_unsigned (regcache, regnum, regval); | |
1832 | } | |
1833 | if (readbuf != NULL) | |
1834 | { | |
1835 | regcache_cooked_read_unsigned (regcache, regnum, ®val); | |
1836 | store_unsigned_integer (readbuf + offset, | |
1837 | TYPE_LENGTH (eltype), byte_order, | |
1838 | regval); | |
1839 | } | |
1840 | } | |
1841 | } | |
1842 | ||
1843 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1844 | } | |
1845 | /* OpenCL vectors >= 16 bytes are returned in v2..v9. */ | |
1846 | if (TYPE_CODE (valtype) == TYPE_CODE_ARRAY | |
1847 | && TYPE_VECTOR (valtype) | |
1848 | && TYPE_LENGTH (valtype) >= 16 | |
1849 | && opencl_abi) | |
1850 | { | |
1851 | int n_regs = TYPE_LENGTH (valtype) / 16; | |
1852 | int i; | |
1853 | ||
1854 | for (i = 0; i < n_regs; i++) | |
1855 | { | |
1856 | int offset = i * 16; | |
1857 | int regnum = tdep->ppc_vr0_regnum + 2 + i; | |
1858 | ||
1859 | if (writebuf != NULL) | |
1860 | regcache_cooked_write (regcache, regnum, writebuf + offset); | |
1861 | if (readbuf != NULL) | |
1862 | regcache_cooked_read (regcache, regnum, readbuf + offset); | |
1863 | } | |
1864 | ||
1865 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1866 | } | |
3d8476bc PG |
1867 | /* Array type has more than one use. */ |
1868 | if (TYPE_CODE (valtype) == TYPE_CODE_ARRAY) | |
afd48b75 AC |
1869 | { |
1870 | /* Small character arrays are returned, right justified, in r3. */ | |
3d8476bc PG |
1871 | if (TYPE_LENGTH (valtype) <= 8 |
1872 | && TYPE_CODE (TYPE_TARGET_TYPE (valtype)) == TYPE_CODE_INT | |
1873 | && TYPE_LENGTH (TYPE_TARGET_TYPE (valtype)) == 1) | |
1874 | { | |
1875 | int offset = (register_size (gdbarch, tdep->ppc_gp0_regnum + 3) | |
1876 | - TYPE_LENGTH (valtype)); | |
1877 | if (writebuf != NULL) | |
1878 | regcache_cooked_write_part (regcache, tdep->ppc_gp0_regnum + 3, | |
1879 | offset, TYPE_LENGTH (valtype), writebuf); | |
1880 | if (readbuf != NULL) | |
1881 | regcache_cooked_read_part (regcache, tdep->ppc_gp0_regnum + 3, | |
1882 | offset, TYPE_LENGTH (valtype), readbuf); | |
1883 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1884 | } | |
1885 | /* A VMX vector is returned in v2. */ | |
1886 | if (TYPE_CODE (valtype) == TYPE_CODE_ARRAY | |
24e9cda0 UW |
1887 | && TYPE_VECTOR (valtype) |
1888 | && tdep->vector_abi == POWERPC_VEC_ALTIVEC) | |
3d8476bc PG |
1889 | { |
1890 | if (readbuf) | |
1891 | regcache_cooked_read (regcache, tdep->ppc_vr0_regnum + 2, readbuf); | |
1892 | if (writebuf) | |
0df8b418 MS |
1893 | regcache_cooked_write (regcache, tdep->ppc_vr0_regnum + 2, |
1894 | writebuf); | |
3d8476bc PG |
1895 | return RETURN_VALUE_REGISTER_CONVENTION; |
1896 | } | |
afd48b75 AC |
1897 | } |
1898 | /* Big floating point values get stored in adjacent floating | |
3d8476bc | 1899 | point registers, starting with F1. */ |
afd48b75 | 1900 | if (TYPE_CODE (valtype) == TYPE_CODE_FLT |
944fcfab | 1901 | && (TYPE_LENGTH (valtype) == 16 || TYPE_LENGTH (valtype) == 32)) |
afd48b75 | 1902 | { |
963e2bb7 | 1903 | if (writebuf || readbuf != NULL) |
afd48b75 AC |
1904 | { |
1905 | int i; | |
1906 | for (i = 0; i < TYPE_LENGTH (valtype) / 8; i++) | |
1907 | { | |
963e2bb7 | 1908 | if (writebuf != NULL) |
366f009f | 1909 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1 + i, |
963e2bb7 AC |
1910 | (const bfd_byte *) writebuf + i * 8); |
1911 | if (readbuf != NULL) | |
366f009f | 1912 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1 + i, |
963e2bb7 | 1913 | (bfd_byte *) readbuf + i * 8); |
afd48b75 AC |
1914 | } |
1915 | } | |
1916 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1917 | } | |
1918 | /* Complex values get returned in f1:f2, need to convert. */ | |
1919 | if (TYPE_CODE (valtype) == TYPE_CODE_COMPLEX | |
1920 | && (TYPE_LENGTH (valtype) == 8 || TYPE_LENGTH (valtype) == 16)) | |
1921 | { | |
1922 | if (regcache != NULL) | |
1923 | { | |
1924 | int i; | |
1925 | for (i = 0; i < 2; i++) | |
1926 | { | |
50fd1280 | 1927 | gdb_byte regval[MAX_REGISTER_SIZE]; |
944fcfab | 1928 | struct type *regtype = |
40a6adc1 | 1929 | register_type (gdbarch, tdep->ppc_fp0_regnum); |
963e2bb7 | 1930 | if (writebuf != NULL) |
afd48b75 | 1931 | { |
963e2bb7 | 1932 | convert_typed_floating ((const bfd_byte *) writebuf + |
944fcfab | 1933 | i * (TYPE_LENGTH (valtype) / 2), |
afd48b75 | 1934 | valtype, regval, regtype); |
366f009f JB |
1935 | regcache_cooked_write (regcache, |
1936 | tdep->ppc_fp0_regnum + 1 + i, | |
944fcfab | 1937 | regval); |
afd48b75 | 1938 | } |
963e2bb7 | 1939 | if (readbuf != NULL) |
afd48b75 | 1940 | { |
366f009f JB |
1941 | regcache_cooked_read (regcache, |
1942 | tdep->ppc_fp0_regnum + 1 + i, | |
1943 | regval); | |
afd48b75 | 1944 | convert_typed_floating (regval, regtype, |
963e2bb7 | 1945 | (bfd_byte *) readbuf + |
944fcfab | 1946 | i * (TYPE_LENGTH (valtype) / 2), |
afd48b75 AC |
1947 | valtype); |
1948 | } | |
1949 | } | |
1950 | } | |
1951 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1952 | } | |
1953 | /* Big complex values get stored in f1:f4. */ | |
944fcfab | 1954 | if (TYPE_CODE (valtype) == TYPE_CODE_COMPLEX && TYPE_LENGTH (valtype) == 32) |
afd48b75 AC |
1955 | { |
1956 | if (regcache != NULL) | |
1957 | { | |
1958 | int i; | |
1959 | for (i = 0; i < 4; i++) | |
1960 | { | |
963e2bb7 | 1961 | if (writebuf != NULL) |
366f009f | 1962 | regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1 + i, |
963e2bb7 AC |
1963 | (const bfd_byte *) writebuf + i * 8); |
1964 | if (readbuf != NULL) | |
366f009f | 1965 | regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1 + i, |
963e2bb7 | 1966 | (bfd_byte *) readbuf + i * 8); |
afd48b75 AC |
1967 | } |
1968 | } | |
1969 | return RETURN_VALUE_REGISTER_CONVENTION; | |
1970 | } | |
1971 | return RETURN_VALUE_STRUCT_CONVENTION; | |
1972 | } | |
1973 |