Commit | Line | Data |
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c906108c | 1 | /* Target-dependent code for the SPARC for GDB, the GNU debugger. |
cda5a58a AC |
2 | |
3 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, | |
1e698235 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, |
cda5a58a | 5 | Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
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. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | /* ??? Support for calling functions from gdb in sparc64 is unfinished. */ | |
25 | ||
26 | #include "defs.h" | |
5af923b0 | 27 | #include "arch-utils.h" |
c906108c SS |
28 | #include "frame.h" |
29 | #include "inferior.h" | |
c906108c SS |
30 | #include "target.h" |
31 | #include "value.h" | |
32 | #include "bfd.h" | |
33 | #include "gdb_string.h" | |
4e052eda | 34 | #include "regcache.h" |
ef3cf062 | 35 | #include "osabi.h" |
c906108c | 36 | |
c139e7d9 DJ |
37 | #include "sparc-tdep.h" |
38 | ||
c906108c SS |
39 | #ifdef USE_PROC_FS |
40 | #include <sys/procfs.h> | |
13437d4b KB |
41 | /* Prototypes for supply_gregset etc. */ |
42 | #include "gregset.h" | |
c906108c SS |
43 | #endif |
44 | ||
45 | #include "gdbcore.h" | |
43bd9a9e | 46 | #include "gdb_assert.h" |
c906108c | 47 | |
5af923b0 MS |
48 | #include "symfile.h" /* for 'entry_point_address' */ |
49 | ||
4eb8c7fc DM |
50 | /* |
51 | * Some local macros that have multi-arch and non-multi-arch versions: | |
52 | */ | |
53 | ||
07020390 AC |
54 | #if 0 |
55 | // OBSOLETE /* Does the target have Floating Point registers? */ | |
56 | // OBSOLETE #define SPARC_HAS_FPU (gdbarch_tdep (current_gdbarch)->has_fpu) | |
57 | #endif | |
58 | #define SPARC_HAS_FPU 1 | |
4eb8c7fc DM |
59 | /* Number of bytes devoted to Floating Point registers: */ |
60 | #define FP_REGISTER_BYTES (gdbarch_tdep (current_gdbarch)->fp_register_bytes) | |
61 | /* Highest numbered Floating Point register. */ | |
62 | #define FP_MAX_REGNUM (gdbarch_tdep (current_gdbarch)->fp_max_regnum) | |
63 | /* Size of a general (integer) register: */ | |
64 | #define SPARC_INTREG_SIZE (gdbarch_tdep (current_gdbarch)->intreg_size) | |
65 | /* Offset within the call dummy stack of the saved registers. */ | |
66 | #define DUMMY_REG_SAVE_OFFSET (gdbarch_tdep (current_gdbarch)->reg_save_offset) | |
67 | ||
4eb8c7fc DM |
68 | struct gdbarch_tdep |
69 | { | |
f81824a9 AC |
70 | #if 0 |
71 | // OBSOLETE int has_fpu; | |
72 | #endif | |
4eb8c7fc DM |
73 | int fp_register_bytes; |
74 | int y_regnum; | |
75 | int fp_max_regnum; | |
76 | int intreg_size; | |
77 | int reg_save_offset; | |
78 | int call_dummy_call_offset; | |
79 | int print_insn_mach; | |
80 | }; | |
5af923b0 MS |
81 | |
82 | /* Now make GDB_TARGET_IS_SPARC64 a runtime test. */ | |
83 | /* FIXME MVS: or try testing bfd_arch_info.arch and bfd_arch_info.mach ... | |
84 | * define GDB_TARGET_IS_SPARC64 \ | |
85 | * (TARGET_ARCHITECTURE->arch == bfd_arch_sparc && \ | |
86 | * (TARGET_ARCHITECTURE->mach == bfd_mach_sparc_v9 || \ | |
87 | * TARGET_ARCHITECTURE->mach == bfd_mach_sparc_v9a)) | |
88 | */ | |
89 | ||
c906108c SS |
90 | /* We don't store all registers immediately when requested, since they |
91 | get sent over in large chunks anyway. Instead, we accumulate most | |
92 | of the changes and send them over once. "deferred_stores" keeps | |
93 | track of which sets of registers we have locally-changed copies of, | |
94 | so we only need send the groups that have changed. */ | |
95 | ||
5af923b0 | 96 | int deferred_stores = 0; /* Accumulated stores we want to do eventually. */ |
c906108c SS |
97 | |
98 | ||
f81824a9 AC |
99 | #if 0 |
100 | // OBSOLETE /* Some machines, such as Fujitsu SPARClite 86x, have a bi-endian mode | |
101 | // OBSOLETE where instructions are big-endian and data are little-endian. | |
102 | // OBSOLETE This flag is set when we detect that the target is of this type. */ | |
103 | // OBSOLETE | |
104 | // OBSOLETE int bi_endian = 0; | |
105 | #endif | |
c906108c SS |
106 | |
107 | ||
aaab4dba AC |
108 | const unsigned char * |
109 | sparc_breakpoint_from_pc (CORE_ADDR *pc, int *len) | |
110 | { | |
111 | static const char breakpoint[] = {0x91, 0xd0, 0x20, 0x01}; | |
112 | (*len) = sizeof (breakpoint); | |
113 | return breakpoint; | |
114 | } | |
115 | ||
c906108c SS |
116 | /* Fetch a single instruction. Even on bi-endian machines |
117 | such as sparc86x, instructions are always big-endian. */ | |
118 | ||
119 | static unsigned long | |
fba45db2 | 120 | fetch_instruction (CORE_ADDR pc) |
c906108c SS |
121 | { |
122 | unsigned long retval; | |
123 | int i; | |
124 | unsigned char buf[4]; | |
125 | ||
126 | read_memory (pc, buf, sizeof (buf)); | |
127 | ||
128 | /* Start at the most significant end of the integer, and work towards | |
129 | the least significant. */ | |
130 | retval = 0; | |
131 | for (i = 0; i < sizeof (buf); ++i) | |
132 | retval = (retval << 8) | buf[i]; | |
133 | return retval; | |
134 | } | |
135 | ||
136 | ||
137 | /* Branches with prediction are treated like their non-predicting cousins. */ | |
138 | /* FIXME: What about floating point branches? */ | |
139 | ||
140 | /* Macros to extract fields from sparc instructions. */ | |
141 | #define X_OP(i) (((i) >> 30) & 0x3) | |
142 | #define X_RD(i) (((i) >> 25) & 0x1f) | |
143 | #define X_A(i) (((i) >> 29) & 1) | |
144 | #define X_COND(i) (((i) >> 25) & 0xf) | |
145 | #define X_OP2(i) (((i) >> 22) & 0x7) | |
146 | #define X_IMM22(i) ((i) & 0x3fffff) | |
147 | #define X_OP3(i) (((i) >> 19) & 0x3f) | |
148 | #define X_RS1(i) (((i) >> 14) & 0x1f) | |
149 | #define X_I(i) (((i) >> 13) & 1) | |
150 | #define X_IMM13(i) ((i) & 0x1fff) | |
151 | /* Sign extension macros. */ | |
152 | #define X_SIMM13(i) ((X_IMM13 (i) ^ 0x1000) - 0x1000) | |
153 | #define X_DISP22(i) ((X_IMM22 (i) ^ 0x200000) - 0x200000) | |
154 | #define X_CC(i) (((i) >> 20) & 3) | |
155 | #define X_P(i) (((i) >> 19) & 1) | |
156 | #define X_DISP19(i) ((((i) & 0x7ffff) ^ 0x40000) - 0x40000) | |
157 | #define X_RCOND(i) (((i) >> 25) & 7) | |
158 | #define X_DISP16(i) ((((((i) >> 6) && 0xc000) | ((i) & 0x3fff)) ^ 0x8000) - 0x8000) | |
159 | #define X_FCN(i) (((i) >> 25) & 31) | |
160 | ||
161 | typedef enum | |
162 | { | |
5af923b0 MS |
163 | Error, not_branch, bicc, bicca, ba, baa, ticc, ta, done_retry |
164 | } branch_type; | |
c906108c SS |
165 | |
166 | /* Simulate single-step ptrace call for sun4. Code written by Gary | |
167 | Beihl (beihl@mcc.com). */ | |
168 | ||
169 | /* npc4 and next_pc describe the situation at the time that the | |
170 | step-breakpoint was set, not necessary the current value of NPC_REGNUM. */ | |
171 | static CORE_ADDR next_pc, npc4, target; | |
172 | static int brknpc4, brktrg; | |
173 | typedef char binsn_quantum[BREAKPOINT_MAX]; | |
174 | static binsn_quantum break_mem[3]; | |
175 | ||
5af923b0 | 176 | static branch_type isbranch (long, CORE_ADDR, CORE_ADDR *); |
c906108c SS |
177 | |
178 | /* single_step() is called just before we want to resume the inferior, | |
179 | if we want to single-step it but there is no hardware or kernel single-step | |
180 | support (as on all SPARCs). We find all the possible targets of the | |
181 | coming instruction and breakpoint them. | |
182 | ||
183 | single_step is also called just after the inferior stops. If we had | |
184 | set up a simulated single-step, we undo our damage. */ | |
185 | ||
186 | void | |
fba45db2 KB |
187 | sparc_software_single_step (enum target_signal ignore, /* pid, but we don't need it */ |
188 | int insert_breakpoints_p) | |
c906108c SS |
189 | { |
190 | branch_type br; | |
191 | CORE_ADDR pc; | |
192 | long pc_instruction; | |
193 | ||
194 | if (insert_breakpoints_p) | |
195 | { | |
196 | /* Always set breakpoint for NPC. */ | |
197 | next_pc = read_register (NPC_REGNUM); | |
c5aa993b | 198 | npc4 = next_pc + 4; /* branch not taken */ |
c906108c SS |
199 | |
200 | target_insert_breakpoint (next_pc, break_mem[0]); | |
201 | /* printf_unfiltered ("set break at %x\n",next_pc); */ | |
202 | ||
203 | pc = read_register (PC_REGNUM); | |
204 | pc_instruction = fetch_instruction (pc); | |
205 | br = isbranch (pc_instruction, pc, &target); | |
206 | brknpc4 = brktrg = 0; | |
207 | ||
208 | if (br == bicca) | |
209 | { | |
210 | /* Conditional annulled branch will either end up at | |
211 | npc (if taken) or at npc+4 (if not taken). | |
212 | Trap npc+4. */ | |
213 | brknpc4 = 1; | |
214 | target_insert_breakpoint (npc4, break_mem[1]); | |
215 | } | |
216 | else if (br == baa && target != next_pc) | |
217 | { | |
218 | /* Unconditional annulled branch will always end up at | |
219 | the target. */ | |
220 | brktrg = 1; | |
221 | target_insert_breakpoint (target, break_mem[2]); | |
222 | } | |
5af923b0 | 223 | else if (GDB_TARGET_IS_SPARC64 && br == done_retry) |
c906108c SS |
224 | { |
225 | brktrg = 1; | |
226 | target_insert_breakpoint (target, break_mem[2]); | |
227 | } | |
c906108c SS |
228 | } |
229 | else | |
230 | { | |
231 | /* Remove breakpoints */ | |
232 | target_remove_breakpoint (next_pc, break_mem[0]); | |
233 | ||
234 | if (brknpc4) | |
235 | target_remove_breakpoint (npc4, break_mem[1]); | |
236 | ||
237 | if (brktrg) | |
238 | target_remove_breakpoint (target, break_mem[2]); | |
239 | } | |
240 | } | |
241 | \f | |
5af923b0 MS |
242 | struct frame_extra_info |
243 | { | |
244 | CORE_ADDR bottom; | |
245 | int in_prologue; | |
246 | int flat; | |
247 | /* Following fields only relevant for flat frames. */ | |
248 | CORE_ADDR pc_addr; | |
249 | CORE_ADDR fp_addr; | |
250 | /* Add this to ->frame to get the value of the stack pointer at the | |
251 | time of the register saves. */ | |
252 | int sp_offset; | |
253 | }; | |
254 | ||
255 | /* Call this for each newly created frame. For SPARC, we need to | |
256 | calculate the bottom of the frame, and do some extra work if the | |
257 | prologue has been generated via the -mflat option to GCC. In | |
258 | particular, we need to know where the previous fp and the pc have | |
259 | been stashed, since their exact position within the frame may vary. */ | |
c906108c SS |
260 | |
261 | void | |
fba45db2 | 262 | sparc_init_extra_frame_info (int fromleaf, struct frame_info *fi) |
c906108c SS |
263 | { |
264 | char *name; | |
265 | CORE_ADDR prologue_start, prologue_end; | |
266 | int insn; | |
267 | ||
a00a19e9 | 268 | frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info)); |
5af923b0 MS |
269 | frame_saved_regs_zalloc (fi); |
270 | ||
da50a4b7 | 271 | get_frame_extra_info (fi)->bottom = |
11c02a10 AC |
272 | (get_next_frame (fi) |
273 | ? (get_frame_base (fi) == get_frame_base (get_next_frame (fi)) | |
da50a4b7 | 274 | ? get_frame_extra_info (get_next_frame (fi))->bottom |
11c02a10 AC |
275 | : get_frame_base (get_next_frame (fi))) |
276 | : read_sp ()); | |
c906108c | 277 | |
0ba6dca9 AC |
278 | /* If fi->next is NULL, then we already set ->frame by passing |
279 | deprecated_read_fp() to create_new_frame. */ | |
11c02a10 | 280 | if (get_next_frame (fi)) |
c906108c | 281 | { |
d9d9c31f | 282 | char buf[MAX_REGISTER_SIZE]; |
c906108c SS |
283 | |
284 | /* Compute ->frame as if not flat. If it is flat, we'll change | |
c5aa993b | 285 | it later. */ |
11c02a10 AC |
286 | if (get_next_frame (get_next_frame (fi)) != NULL |
287 | && ((get_frame_type (get_next_frame (get_next_frame (fi))) == SIGTRAMP_FRAME) | |
288 | || deprecated_frame_in_dummy (get_next_frame (get_next_frame (fi)))) | |
289 | && frameless_look_for_prologue (get_next_frame (fi))) | |
c906108c SS |
290 | { |
291 | /* A frameless function interrupted by a signal did not change | |
292 | the frame pointer, fix up frame pointer accordingly. */ | |
11c02a10 | 293 | deprecated_update_frame_base_hack (fi, get_frame_base (get_next_frame (fi))); |
da50a4b7 AC |
294 | get_frame_extra_info (fi)->bottom = |
295 | get_frame_extra_info (get_next_frame (fi))->bottom; | |
c906108c SS |
296 | } |
297 | else | |
298 | { | |
299 | /* Should we adjust for stack bias here? */ | |
ac2adee5 | 300 | ULONGEST tmp; |
0ba6dca9 | 301 | frame_read_unsigned_register (fi, DEPRECATED_FP_REGNUM, &tmp); |
ac2adee5 | 302 | deprecated_update_frame_base_hack (fi, tmp); |
1e2330ba AC |
303 | if (GDB_TARGET_IS_SPARC64 && (get_frame_base (fi) & 1)) |
304 | deprecated_update_frame_base_hack (fi, get_frame_base (fi) + 2047); | |
c906108c SS |
305 | } |
306 | } | |
307 | ||
308 | /* Decide whether this is a function with a ``flat register window'' | |
309 | frame. For such functions, the frame pointer is actually in %i7. */ | |
da50a4b7 AC |
310 | get_frame_extra_info (fi)->flat = 0; |
311 | get_frame_extra_info (fi)->in_prologue = 0; | |
50abf9e5 | 312 | if (find_pc_partial_function (get_frame_pc (fi), &name, &prologue_start, &prologue_end)) |
c906108c SS |
313 | { |
314 | /* See if the function starts with an add (which will be of a | |
c5aa993b JM |
315 | negative number if a flat frame) to the sp. FIXME: Does not |
316 | handle large frames which will need more than one instruction | |
317 | to adjust the sp. */ | |
d0901120 | 318 | insn = fetch_instruction (prologue_start); |
c906108c SS |
319 | if (X_OP (insn) == 2 && X_RD (insn) == 14 && X_OP3 (insn) == 0 |
320 | && X_I (insn) && X_SIMM13 (insn) < 0) | |
321 | { | |
322 | int offset = X_SIMM13 (insn); | |
323 | ||
324 | /* Then look for a save of %i7 into the frame. */ | |
325 | insn = fetch_instruction (prologue_start + 4); | |
326 | if (X_OP (insn) == 3 | |
327 | && X_RD (insn) == 31 | |
328 | && X_OP3 (insn) == 4 | |
329 | && X_RS1 (insn) == 14) | |
330 | { | |
d9d9c31f | 331 | char buf[MAX_REGISTER_SIZE]; |
c906108c SS |
332 | |
333 | /* We definitely have a flat frame now. */ | |
da50a4b7 | 334 | get_frame_extra_info (fi)->flat = 1; |
c906108c | 335 | |
da50a4b7 | 336 | get_frame_extra_info (fi)->sp_offset = offset; |
c906108c SS |
337 | |
338 | /* Overwrite the frame's address with the value in %i7. */ | |
ac2adee5 AC |
339 | { |
340 | ULONGEST tmp; | |
341 | frame_read_unsigned_register (fi, I7_REGNUM, &tmp); | |
342 | deprecated_update_frame_base_hack (fi, tmp); | |
343 | } | |
5af923b0 | 344 | |
1e2330ba AC |
345 | if (GDB_TARGET_IS_SPARC64 && (get_frame_base (fi) & 1)) |
346 | deprecated_update_frame_base_hack (fi, get_frame_base (fi) + 2047); | |
5af923b0 | 347 | |
c906108c | 348 | /* Record where the fp got saved. */ |
da50a4b7 AC |
349 | get_frame_extra_info (fi)->fp_addr = |
350 | get_frame_base (fi) + get_frame_extra_info (fi)->sp_offset + X_SIMM13 (insn); | |
c906108c SS |
351 | |
352 | /* Also try to collect where the pc got saved to. */ | |
da50a4b7 | 353 | get_frame_extra_info (fi)->pc_addr = 0; |
c906108c SS |
354 | insn = fetch_instruction (prologue_start + 12); |
355 | if (X_OP (insn) == 3 | |
356 | && X_RD (insn) == 15 | |
357 | && X_OP3 (insn) == 4 | |
358 | && X_RS1 (insn) == 14) | |
da50a4b7 AC |
359 | get_frame_extra_info (fi)->pc_addr = |
360 | get_frame_base (fi) + get_frame_extra_info (fi)->sp_offset + X_SIMM13 (insn); | |
c906108c SS |
361 | } |
362 | } | |
c5aa993b JM |
363 | else |
364 | { | |
365 | /* Check if the PC is in the function prologue before a SAVE | |
366 | instruction has been executed yet. If so, set the frame | |
367 | to the current value of the stack pointer and set | |
368 | the in_prologue flag. */ | |
369 | CORE_ADDR addr; | |
370 | struct symtab_and_line sal; | |
371 | ||
372 | sal = find_pc_line (prologue_start, 0); | |
373 | if (sal.line == 0) /* no line info, use PC */ | |
50abf9e5 | 374 | prologue_end = get_frame_pc (fi); |
c5aa993b JM |
375 | else if (sal.end < prologue_end) |
376 | prologue_end = sal.end; | |
50abf9e5 | 377 | if (get_frame_pc (fi) < prologue_end) |
c5aa993b | 378 | { |
50abf9e5 | 379 | for (addr = prologue_start; addr < get_frame_pc (fi); addr += 4) |
c5aa993b JM |
380 | { |
381 | insn = read_memory_integer (addr, 4); | |
382 | if (X_OP (insn) == 2 && X_OP3 (insn) == 0x3c) | |
383 | break; /* SAVE seen, stop searching */ | |
384 | } | |
50abf9e5 | 385 | if (addr >= get_frame_pc (fi)) |
c5aa993b | 386 | { |
da50a4b7 | 387 | get_frame_extra_info (fi)->in_prologue = 1; |
8ccd593b | 388 | deprecated_update_frame_base_hack (fi, read_register (SP_REGNUM)); |
c5aa993b JM |
389 | } |
390 | } | |
391 | } | |
c906108c | 392 | } |
11c02a10 | 393 | if (get_next_frame (fi) && get_frame_base (fi) == 0) |
c906108c SS |
394 | { |
395 | /* Kludge to cause init_prev_frame_info to destroy the new frame. */ | |
11c02a10 AC |
396 | deprecated_update_frame_base_hack (fi, get_frame_base (get_next_frame (fi))); |
397 | deprecated_update_frame_pc_hack (fi, get_frame_pc (get_next_frame (fi))); | |
c906108c SS |
398 | } |
399 | } | |
400 | ||
401 | CORE_ADDR | |
fba45db2 | 402 | sparc_frame_chain (struct frame_info *frame) |
c906108c | 403 | { |
618ce49f AC |
404 | /* Value that will cause DEPRECATED_FRAME_CHAIN_VALID to not worry |
405 | about the chain value. If it really is zero, we detect it later | |
406 | in sparc_init_prev_frame. | |
881324eb | 407 | |
e6ba3bc9 AC |
408 | Note: kevinb/2003-02-18: The constant 1 used to be returned here, |
409 | but, after some recent changes to legacy_frame_chain_valid(), | |
410 | this value is no longer suitable for causing | |
411 | legacy_frame_chain_valid() to "not worry about the chain value." | |
412 | The constant ~0 (i.e, 0xfff...) causes the failing test in | |
413 | legacy_frame_chain_valid() to succeed thus preserving the "not | |
414 | worry" property. I had considered using something like | |
415 | ``get_frame_base (frame) + 1''. However, I think a constant | |
416 | value is better, because when debugging this problem, I knew that | |
417 | something funny was going on as soon as I saw the constant 1 | |
418 | being used as the frame chain elsewhere in GDB. */ | |
881324eb KB |
419 | |
420 | return ~ (CORE_ADDR) 0; | |
c906108c SS |
421 | } |
422 | ||
c906108c SS |
423 | /* Find the pc saved in frame FRAME. */ |
424 | ||
425 | CORE_ADDR | |
fba45db2 | 426 | sparc_frame_saved_pc (struct frame_info *frame) |
c906108c | 427 | { |
d9d9c31f | 428 | char buf[MAX_REGISTER_SIZE]; |
c906108c SS |
429 | CORE_ADDR addr; |
430 | ||
5a203e44 | 431 | if ((get_frame_type (frame) == SIGTRAMP_FRAME)) |
c906108c SS |
432 | { |
433 | /* This is the signal trampoline frame. | |
c5aa993b | 434 | Get the saved PC from the sigcontext structure. */ |
c906108c SS |
435 | |
436 | #ifndef SIGCONTEXT_PC_OFFSET | |
437 | #define SIGCONTEXT_PC_OFFSET 12 | |
438 | #endif | |
439 | ||
440 | CORE_ADDR sigcontext_addr; | |
5af923b0 | 441 | char *scbuf; |
c906108c SS |
442 | int saved_pc_offset = SIGCONTEXT_PC_OFFSET; |
443 | char *name = NULL; | |
444 | ||
5af923b0 MS |
445 | scbuf = alloca (TARGET_PTR_BIT / HOST_CHAR_BIT); |
446 | ||
c906108c | 447 | /* Solaris2 ucbsigvechandler passes a pointer to a sigcontext |
c5aa993b | 448 | as the third parameter. The offset to the saved pc is 12. */ |
50abf9e5 | 449 | find_pc_partial_function (get_frame_pc (frame), &name, |
c5aa993b | 450 | (CORE_ADDR *) NULL, (CORE_ADDR *) NULL); |
c906108c SS |
451 | if (name && STREQ (name, "ucbsigvechandler")) |
452 | saved_pc_offset = 12; | |
453 | ||
454 | /* The sigcontext address is contained in register O2. */ | |
ac2adee5 AC |
455 | { |
456 | ULONGEST tmp; | |
457 | frame_read_unsigned_register (frame, O0_REGNUM + 2, &tmp); | |
458 | sigcontext_addr = tmp; | |
459 | } | |
c906108c SS |
460 | |
461 | /* Don't cause a memory_error when accessing sigcontext in case the | |
c5aa993b | 462 | stack layout has changed or the stack is corrupt. */ |
c906108c SS |
463 | target_read_memory (sigcontext_addr + saved_pc_offset, |
464 | scbuf, sizeof (scbuf)); | |
7c0b4a20 | 465 | return extract_unsigned_integer (scbuf, sizeof (scbuf)); |
c906108c | 466 | } |
da50a4b7 | 467 | else if (get_frame_extra_info (frame)->in_prologue || |
11c02a10 AC |
468 | (get_next_frame (frame) != NULL && |
469 | ((get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME) || | |
470 | deprecated_frame_in_dummy (get_next_frame (frame))) && | |
5af923b0 | 471 | frameless_look_for_prologue (frame))) |
c906108c SS |
472 | { |
473 | /* A frameless function interrupted by a signal did not save | |
c5aa993b | 474 | the PC, it is still in %o7. */ |
ac2adee5 AC |
475 | ULONGEST tmp; |
476 | frame_read_unsigned_register (frame, O7_REGNUM, &tmp); | |
477 | return PC_ADJUST (tmp); | |
c906108c | 478 | } |
da50a4b7 AC |
479 | if (get_frame_extra_info (frame)->flat) |
480 | addr = get_frame_extra_info (frame)->pc_addr; | |
c906108c | 481 | else |
da50a4b7 | 482 | addr = get_frame_extra_info (frame)->bottom + FRAME_SAVED_I0 + |
c906108c SS |
483 | SPARC_INTREG_SIZE * (I7_REGNUM - I0_REGNUM); |
484 | ||
485 | if (addr == 0) | |
486 | /* A flat frame leaf function might not save the PC anywhere, | |
487 | just leave it in %o7. */ | |
488 | return PC_ADJUST (read_register (O7_REGNUM)); | |
489 | ||
490 | read_memory (addr, buf, SPARC_INTREG_SIZE); | |
7c0b4a20 | 491 | return PC_ADJUST (extract_unsigned_integer (buf, SPARC_INTREG_SIZE)); |
c906108c SS |
492 | } |
493 | ||
494 | /* Since an individual frame in the frame cache is defined by two | |
495 | arguments (a frame pointer and a stack pointer), we need two | |
496 | arguments to get info for an arbitrary stack frame. This routine | |
497 | takes two arguments and makes the cached frames look as if these | |
498 | two arguments defined a frame on the cache. This allows the rest | |
499 | of info frame to extract the important arguments without | |
500 | difficulty. */ | |
501 | ||
502 | struct frame_info * | |
fba45db2 | 503 | setup_arbitrary_frame (int argc, CORE_ADDR *argv) |
c906108c SS |
504 | { |
505 | struct frame_info *frame; | |
506 | ||
507 | if (argc != 2) | |
508 | error ("Sparc frame specifications require two arguments: fp and sp"); | |
509 | ||
510 | frame = create_new_frame (argv[0], 0); | |
511 | ||
512 | if (!frame) | |
8e65ff28 AC |
513 | internal_error (__FILE__, __LINE__, |
514 | "create_new_frame returned invalid frame"); | |
c5aa993b | 515 | |
da50a4b7 | 516 | get_frame_extra_info (frame)->bottom = argv[1]; |
8bedc050 | 517 | deprecated_update_frame_pc_hack (frame, DEPRECATED_FRAME_SAVED_PC (frame)); |
c906108c SS |
518 | return frame; |
519 | } | |
520 | ||
521 | /* Given a pc value, skip it forward past the function prologue by | |
522 | disassembling instructions that appear to be a prologue. | |
523 | ||
524 | If FRAMELESS_P is set, we are only testing to see if the function | |
525 | is frameless. This allows a quicker answer. | |
526 | ||
527 | This routine should be more specific in its actions; making sure | |
528 | that it uses the same register in the initial prologue section. */ | |
529 | ||
5af923b0 MS |
530 | static CORE_ADDR examine_prologue (CORE_ADDR, int, struct frame_info *, |
531 | CORE_ADDR *); | |
c906108c | 532 | |
c5aa993b | 533 | static CORE_ADDR |
fba45db2 KB |
534 | examine_prologue (CORE_ADDR start_pc, int frameless_p, struct frame_info *fi, |
535 | CORE_ADDR *saved_regs) | |
c906108c SS |
536 | { |
537 | int insn; | |
538 | int dest = -1; | |
539 | CORE_ADDR pc = start_pc; | |
540 | int is_flat = 0; | |
541 | ||
542 | insn = fetch_instruction (pc); | |
543 | ||
544 | /* Recognize the `sethi' insn and record its destination. */ | |
545 | if (X_OP (insn) == 0 && X_OP2 (insn) == 4) | |
546 | { | |
547 | dest = X_RD (insn); | |
548 | pc += 4; | |
549 | insn = fetch_instruction (pc); | |
550 | } | |
551 | ||
552 | /* Recognize an add immediate value to register to either %g1 or | |
553 | the destination register recorded above. Actually, this might | |
554 | well recognize several different arithmetic operations. | |
555 | It doesn't check that rs1 == rd because in theory "sub %g0, 5, %g1" | |
556 | followed by "save %sp, %g1, %sp" is a valid prologue (Not that | |
557 | I imagine any compiler really does that, however). */ | |
558 | if (X_OP (insn) == 2 | |
559 | && X_I (insn) | |
560 | && (X_RD (insn) == 1 || X_RD (insn) == dest)) | |
561 | { | |
562 | pc += 4; | |
563 | insn = fetch_instruction (pc); | |
564 | } | |
565 | ||
566 | /* Recognize any SAVE insn. */ | |
567 | if (X_OP (insn) == 2 && X_OP3 (insn) == 60) | |
568 | { | |
569 | pc += 4; | |
c5aa993b JM |
570 | if (frameless_p) /* If the save is all we care about, */ |
571 | return pc; /* return before doing more work */ | |
c906108c SS |
572 | insn = fetch_instruction (pc); |
573 | } | |
574 | /* Recognize add to %sp. */ | |
575 | else if (X_OP (insn) == 2 && X_RD (insn) == 14 && X_OP3 (insn) == 0) | |
576 | { | |
577 | pc += 4; | |
c5aa993b JM |
578 | if (frameless_p) /* If the add is all we care about, */ |
579 | return pc; /* return before doing more work */ | |
c906108c SS |
580 | is_flat = 1; |
581 | insn = fetch_instruction (pc); | |
582 | /* Recognize store of frame pointer (i7). */ | |
583 | if (X_OP (insn) == 3 | |
584 | && X_RD (insn) == 31 | |
585 | && X_OP3 (insn) == 4 | |
586 | && X_RS1 (insn) == 14) | |
587 | { | |
588 | pc += 4; | |
589 | insn = fetch_instruction (pc); | |
590 | ||
591 | /* Recognize sub %sp, <anything>, %i7. */ | |
c5aa993b | 592 | if (X_OP (insn) == 2 |
c906108c SS |
593 | && X_OP3 (insn) == 4 |
594 | && X_RS1 (insn) == 14 | |
595 | && X_RD (insn) == 31) | |
596 | { | |
597 | pc += 4; | |
598 | insn = fetch_instruction (pc); | |
599 | } | |
600 | else | |
601 | return pc; | |
602 | } | |
603 | else | |
604 | return pc; | |
605 | } | |
606 | else | |
607 | /* Without a save or add instruction, it's not a prologue. */ | |
608 | return start_pc; | |
609 | ||
610 | while (1) | |
611 | { | |
612 | /* Recognize stores into the frame from the input registers. | |
5af923b0 MS |
613 | This recognizes all non alternate stores of an input register, |
614 | into a location offset from the frame pointer between | |
615 | +68 and +92. */ | |
616 | ||
617 | /* The above will fail for arguments that are promoted | |
618 | (eg. shorts to ints or floats to doubles), because the compiler | |
619 | will pass them in positive-offset frame space, but the prologue | |
620 | will save them (after conversion) in negative frame space at an | |
621 | unpredictable offset. Therefore I am going to remove the | |
622 | restriction on the target-address of the save, on the theory | |
623 | that any unbroken sequence of saves from input registers must | |
624 | be part of the prologue. In un-optimized code (at least), I'm | |
625 | fairly sure that the compiler would emit SOME other instruction | |
626 | (eg. a move or add) before emitting another save that is actually | |
627 | a part of the function body. | |
628 | ||
629 | Besides, the reserved stack space is different for SPARC64 anyway. | |
630 | ||
631 | MVS 4/23/2000 */ | |
632 | ||
633 | if (X_OP (insn) == 3 | |
634 | && (X_OP3 (insn) & 0x3c) == 4 /* Store, non-alternate. */ | |
635 | && (X_RD (insn) & 0x18) == 0x18 /* Input register. */ | |
636 | && X_I (insn) /* Immediate mode. */ | |
637 | && X_RS1 (insn) == 30) /* Off of frame pointer. */ | |
638 | ; /* empty statement -- fall thru to end of loop */ | |
639 | else if (GDB_TARGET_IS_SPARC64 | |
640 | && X_OP (insn) == 3 | |
641 | && (X_OP3 (insn) & 0x3c) == 12 /* store, extended (64-bit) */ | |
642 | && (X_RD (insn) & 0x18) == 0x18 /* input register */ | |
643 | && X_I (insn) /* immediate mode */ | |
644 | && X_RS1 (insn) == 30) /* off of frame pointer */ | |
645 | ; /* empty statement -- fall thru to end of loop */ | |
646 | else if (X_OP (insn) == 3 | |
647 | && (X_OP3 (insn) & 0x3c) == 36 /* store, floating-point */ | |
648 | && X_I (insn) /* immediate mode */ | |
649 | && X_RS1 (insn) == 30) /* off of frame pointer */ | |
650 | ; /* empty statement -- fall thru to end of loop */ | |
c906108c SS |
651 | else if (is_flat |
652 | && X_OP (insn) == 3 | |
5af923b0 MS |
653 | && X_OP3 (insn) == 4 /* store? */ |
654 | && X_RS1 (insn) == 14) /* off of frame pointer */ | |
c906108c SS |
655 | { |
656 | if (saved_regs && X_I (insn)) | |
5af923b0 | 657 | saved_regs[X_RD (insn)] = |
da50a4b7 | 658 | get_frame_base (fi) + get_frame_extra_info (fi)->sp_offset + X_SIMM13 (insn); |
c906108c SS |
659 | } |
660 | else | |
661 | break; | |
662 | pc += 4; | |
663 | insn = fetch_instruction (pc); | |
664 | } | |
665 | ||
666 | return pc; | |
667 | } | |
668 | ||
f510d44e DM |
669 | /* Advance PC across any function entry prologue instructions to reach |
670 | some "real" code. */ | |
671 | ||
c5aa993b | 672 | CORE_ADDR |
f510d44e | 673 | sparc_skip_prologue (CORE_ADDR start_pc) |
c906108c | 674 | { |
f510d44e DM |
675 | struct symtab_and_line sal; |
676 | CORE_ADDR func_start, func_end; | |
677 | ||
678 | /* This is the preferred method, find the end of the prologue by | |
679 | using the debugging information. */ | |
680 | if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) | |
681 | { | |
682 | sal = find_pc_line (func_start, 0); | |
683 | ||
684 | if (sal.end < func_end | |
685 | && start_pc <= sal.end) | |
686 | return sal.end; | |
687 | } | |
688 | ||
689 | /* Oh well, examine the code by hand. */ | |
690 | return examine_prologue (start_pc, 0, NULL, NULL); | |
c906108c SS |
691 | } |
692 | ||
9319a2fe DM |
693 | /* Is the prologue at IP frameless? */ |
694 | ||
695 | int | |
696 | sparc_prologue_frameless_p (CORE_ADDR ip) | |
697 | { | |
f510d44e | 698 | return ip == examine_prologue (ip, 1, NULL, NULL); |
9319a2fe DM |
699 | } |
700 | ||
c906108c SS |
701 | /* Check instruction at ADDR to see if it is a branch. |
702 | All non-annulled instructions will go to NPC or will trap. | |
703 | Set *TARGET if we find a candidate branch; set to zero if not. | |
704 | ||
705 | This isn't static as it's used by remote-sa.sparc.c. */ | |
706 | ||
707 | static branch_type | |
fba45db2 | 708 | isbranch (long instruction, CORE_ADDR addr, CORE_ADDR *target) |
c906108c SS |
709 | { |
710 | branch_type val = not_branch; | |
711 | long int offset = 0; /* Must be signed for sign-extend. */ | |
712 | ||
713 | *target = 0; | |
714 | ||
715 | if (X_OP (instruction) == 0 | |
716 | && (X_OP2 (instruction) == 2 | |
717 | || X_OP2 (instruction) == 6 | |
718 | || X_OP2 (instruction) == 1 | |
719 | || X_OP2 (instruction) == 3 | |
720 | || X_OP2 (instruction) == 5 | |
5af923b0 | 721 | || (GDB_TARGET_IS_SPARC64 && X_OP2 (instruction) == 7))) |
c906108c SS |
722 | { |
723 | if (X_COND (instruction) == 8) | |
724 | val = X_A (instruction) ? baa : ba; | |
725 | else | |
726 | val = X_A (instruction) ? bicca : bicc; | |
727 | switch (X_OP2 (instruction)) | |
728 | { | |
5af923b0 MS |
729 | case 7: |
730 | if (!GDB_TARGET_IS_SPARC64) | |
731 | break; | |
732 | /* else fall thru */ | |
c906108c SS |
733 | case 2: |
734 | case 6: | |
c906108c SS |
735 | offset = 4 * X_DISP22 (instruction); |
736 | break; | |
737 | case 1: | |
738 | case 5: | |
739 | offset = 4 * X_DISP19 (instruction); | |
740 | break; | |
741 | case 3: | |
742 | offset = 4 * X_DISP16 (instruction); | |
743 | break; | |
744 | } | |
745 | *target = addr + offset; | |
746 | } | |
5af923b0 MS |
747 | else if (GDB_TARGET_IS_SPARC64 |
748 | && X_OP (instruction) == 2 | |
c906108c SS |
749 | && X_OP3 (instruction) == 62) |
750 | { | |
751 | if (X_FCN (instruction) == 0) | |
752 | { | |
753 | /* done */ | |
754 | *target = read_register (TNPC_REGNUM); | |
755 | val = done_retry; | |
756 | } | |
757 | else if (X_FCN (instruction) == 1) | |
758 | { | |
759 | /* retry */ | |
760 | *target = read_register (TPC_REGNUM); | |
761 | val = done_retry; | |
762 | } | |
763 | } | |
c906108c SS |
764 | |
765 | return val; | |
766 | } | |
767 | \f | |
768 | /* Find register number REGNUM relative to FRAME and put its | |
769 | (raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable | |
770 | was optimized out (and thus can't be fetched). If the variable | |
771 | was fetched from memory, set *ADDRP to where it was fetched from, | |
772 | otherwise it was fetched from a register. | |
773 | ||
774 | The argument RAW_BUFFER must point to aligned memory. */ | |
775 | ||
776 | void | |
fba45db2 KB |
777 | sparc_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp, |
778 | struct frame_info *frame, int regnum, | |
779 | enum lval_type *lval) | |
c906108c SS |
780 | { |
781 | struct frame_info *frame1; | |
782 | CORE_ADDR addr; | |
783 | ||
784 | if (!target_has_registers) | |
785 | error ("No registers."); | |
786 | ||
787 | if (optimized) | |
788 | *optimized = 0; | |
789 | ||
790 | addr = 0; | |
791 | ||
792 | /* FIXME This code extracted from infcmd.c; should put elsewhere! */ | |
793 | if (frame == NULL) | |
794 | { | |
795 | /* error ("No selected frame."); */ | |
796 | if (!target_has_registers) | |
c5aa993b | 797 | error ("The program has no registers now."); |
6e7f8b9c | 798 | if (deprecated_selected_frame == NULL) |
c5aa993b | 799 | error ("No selected frame."); |
c906108c | 800 | /* Try to use selected frame */ |
6e7f8b9c | 801 | frame = get_prev_frame (deprecated_selected_frame); |
c906108c | 802 | if (frame == 0) |
c5aa993b | 803 | error ("Cmd not meaningful in the outermost frame."); |
c906108c SS |
804 | } |
805 | ||
806 | ||
11c02a10 | 807 | frame1 = get_next_frame (frame); |
c906108c SS |
808 | |
809 | /* Get saved PC from the frame info if not in innermost frame. */ | |
810 | if (regnum == PC_REGNUM && frame1 != NULL) | |
811 | { | |
812 | if (lval != NULL) | |
813 | *lval = not_lval; | |
814 | if (raw_buffer != NULL) | |
815 | { | |
816 | /* Put it back in target format. */ | |
fbd9dcd3 | 817 | store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), get_frame_pc (frame)); |
c906108c SS |
818 | } |
819 | if (addrp != NULL) | |
820 | *addrp = 0; | |
821 | return; | |
822 | } | |
823 | ||
824 | while (frame1 != NULL) | |
825 | { | |
5af923b0 MS |
826 | /* FIXME MVS: wrong test for dummy frame at entry. */ |
827 | ||
da50a4b7 AC |
828 | if (get_frame_pc (frame1) >= (get_frame_extra_info (frame1)->bottom |
829 | ? get_frame_extra_info (frame1)->bottom | |
830 | : read_sp ()) | |
50abf9e5 | 831 | && get_frame_pc (frame1) <= get_frame_base (frame1)) |
c906108c SS |
832 | { |
833 | /* Dummy frame. All but the window regs are in there somewhere. | |
834 | The window registers are saved on the stack, just like in a | |
835 | normal frame. */ | |
836 | if (regnum >= G1_REGNUM && regnum < G1_REGNUM + 7) | |
1e2330ba | 837 | addr = get_frame_base (frame1) + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE |
c906108c SS |
838 | - (FP_REGISTER_BYTES + 8 * SPARC_INTREG_SIZE); |
839 | else if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8) | |
f621c63e AC |
840 | /* NOTE: cagney/2002-05-04: The call to get_prev_frame() |
841 | is safe/cheap - there will always be a prev frame. | |
842 | This is because frame1 is initialized to frame->next | |
843 | (frame1->prev == frame) and is then advanced towards | |
844 | the innermost (next) frame. */ | |
da50a4b7 | 845 | addr = (get_frame_extra_info (get_prev_frame (frame1))->bottom |
c906108c SS |
846 | + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE |
847 | + FRAME_SAVED_I0); | |
848 | else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8) | |
f621c63e AC |
849 | /* NOTE: cagney/2002-05-04: The call to get_prev_frame() |
850 | is safe/cheap - there will always be a prev frame. | |
851 | This is because frame1 is initialized to frame->next | |
852 | (frame1->prev == frame) and is then advanced towards | |
853 | the innermost (next) frame. */ | |
da50a4b7 | 854 | addr = (get_frame_extra_info (get_prev_frame (frame1))->bottom |
c906108c SS |
855 | + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE |
856 | + FRAME_SAVED_L0); | |
857 | else if (regnum >= O0_REGNUM && regnum < O0_REGNUM + 8) | |
1e2330ba | 858 | addr = get_frame_base (frame1) + (regnum - O0_REGNUM) * SPARC_INTREG_SIZE |
c906108c | 859 | - (FP_REGISTER_BYTES + 16 * SPARC_INTREG_SIZE); |
5af923b0 | 860 | else if (SPARC_HAS_FPU && |
60054393 | 861 | regnum >= FP0_REGNUM && regnum < FP0_REGNUM + 32) |
1e2330ba | 862 | addr = get_frame_base (frame1) + (regnum - FP0_REGNUM) * 4 |
c906108c | 863 | - (FP_REGISTER_BYTES); |
5af923b0 | 864 | else if (GDB_TARGET_IS_SPARC64 && SPARC_HAS_FPU && |
60054393 | 865 | regnum >= FP0_REGNUM + 32 && regnum < FP_MAX_REGNUM) |
1e2330ba | 866 | addr = get_frame_base (frame1) + 32 * 4 + (regnum - FP0_REGNUM - 32) * 8 |
c906108c | 867 | - (FP_REGISTER_BYTES); |
c906108c | 868 | else if (regnum >= Y_REGNUM && regnum < NUM_REGS) |
1e2330ba | 869 | addr = get_frame_base (frame1) + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE |
c906108c SS |
870 | - (FP_REGISTER_BYTES + 24 * SPARC_INTREG_SIZE); |
871 | } | |
da50a4b7 | 872 | else if (get_frame_extra_info (frame1)->flat) |
c906108c SS |
873 | { |
874 | ||
875 | if (regnum == RP_REGNUM) | |
da50a4b7 | 876 | addr = get_frame_extra_info (frame1)->pc_addr; |
c906108c | 877 | else if (regnum == I7_REGNUM) |
da50a4b7 | 878 | addr = get_frame_extra_info (frame1)->fp_addr; |
c906108c SS |
879 | else |
880 | { | |
881 | CORE_ADDR func_start; | |
5af923b0 MS |
882 | CORE_ADDR *regs; |
883 | ||
884 | regs = alloca (NUM_REGS * sizeof (CORE_ADDR)); | |
885 | memset (regs, 0, NUM_REGS * sizeof (CORE_ADDR)); | |
c906108c | 886 | |
50abf9e5 | 887 | find_pc_partial_function (get_frame_pc (frame1), NULL, &func_start, NULL); |
5af923b0 MS |
888 | examine_prologue (func_start, 0, frame1, regs); |
889 | addr = regs[regnum]; | |
c906108c SS |
890 | } |
891 | } | |
892 | else | |
893 | { | |
894 | /* Normal frame. Local and In registers are saved on stack. */ | |
895 | if (regnum >= I0_REGNUM && regnum < I0_REGNUM + 8) | |
da50a4b7 | 896 | addr = (get_frame_extra_info (get_prev_frame (frame1))->bottom |
c906108c SS |
897 | + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE |
898 | + FRAME_SAVED_I0); | |
899 | else if (regnum >= L0_REGNUM && regnum < L0_REGNUM + 8) | |
da50a4b7 | 900 | addr = (get_frame_extra_info (get_prev_frame (frame1))->bottom |
c906108c SS |
901 | + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE |
902 | + FRAME_SAVED_L0); | |
903 | else if (regnum >= O0_REGNUM && regnum < O0_REGNUM + 8) | |
904 | { | |
905 | /* Outs become ins. */ | |
ac2adee5 AC |
906 | int realnum; |
907 | frame_register (frame1, (regnum - O0_REGNUM + I0_REGNUM), | |
908 | optimized, lval, addrp, &realnum, raw_buffer); | |
c906108c SS |
909 | return; |
910 | } | |
911 | } | |
912 | if (addr != 0) | |
913 | break; | |
11c02a10 | 914 | frame1 = get_next_frame (frame1); |
c906108c SS |
915 | } |
916 | if (addr != 0) | |
917 | { | |
918 | if (lval != NULL) | |
919 | *lval = lval_memory; | |
920 | if (regnum == SP_REGNUM) | |
921 | { | |
922 | if (raw_buffer != NULL) | |
923 | { | |
924 | /* Put it back in target format. */ | |
fbd9dcd3 | 925 | store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), addr); |
c906108c SS |
926 | } |
927 | if (addrp != NULL) | |
928 | *addrp = 0; | |
929 | return; | |
930 | } | |
931 | if (raw_buffer != NULL) | |
932 | read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum)); | |
933 | } | |
934 | else | |
935 | { | |
936 | if (lval != NULL) | |
937 | *lval = lval_register; | |
938 | addr = REGISTER_BYTE (regnum); | |
939 | if (raw_buffer != NULL) | |
4caf0990 | 940 | deprecated_read_register_gen (regnum, raw_buffer); |
c906108c SS |
941 | } |
942 | if (addrp != NULL) | |
943 | *addrp = addr; | |
944 | } | |
945 | ||
946 | /* Push an empty stack frame, and record in it the current PC, regs, etc. | |
947 | ||
948 | We save the non-windowed registers and the ins. The locals and outs | |
949 | are new; they don't need to be saved. The i's and l's of | |
950 | the last frame were already saved on the stack. */ | |
951 | ||
952 | /* Definitely see tm-sparc.h for more doc of the frame format here. */ | |
953 | ||
c906108c | 954 | /* See tm-sparc.h for how this is calculated. */ |
5af923b0 | 955 | |
c906108c | 956 | #define DUMMY_STACK_REG_BUF_SIZE \ |
60054393 | 957 | (((8+8+8) * SPARC_INTREG_SIZE) + FP_REGISTER_BYTES) |
5af923b0 MS |
958 | #define DUMMY_STACK_SIZE \ |
959 | (DUMMY_STACK_REG_BUF_SIZE + DUMMY_REG_SAVE_OFFSET) | |
c906108c SS |
960 | |
961 | void | |
fba45db2 | 962 | sparc_push_dummy_frame (void) |
c906108c SS |
963 | { |
964 | CORE_ADDR sp, old_sp; | |
5af923b0 MS |
965 | char *register_temp; |
966 | ||
967 | register_temp = alloca (DUMMY_STACK_SIZE); | |
c906108c SS |
968 | |
969 | old_sp = sp = read_sp (); | |
970 | ||
5af923b0 MS |
971 | if (GDB_TARGET_IS_SPARC64) |
972 | { | |
973 | /* PC, NPC, CCR, FSR, FPRS, Y, ASI */ | |
73937e03 AC |
974 | deprecated_read_register_bytes (REGISTER_BYTE (PC_REGNUM), |
975 | ®ister_temp[0], | |
976 | REGISTER_RAW_SIZE (PC_REGNUM) * 7); | |
977 | deprecated_read_register_bytes (REGISTER_BYTE (PSTATE_REGNUM), | |
978 | ®ister_temp[7 * SPARC_INTREG_SIZE], | |
979 | REGISTER_RAW_SIZE (PSTATE_REGNUM)); | |
5af923b0 MS |
980 | /* FIXME: not sure what needs to be saved here. */ |
981 | } | |
982 | else | |
983 | { | |
984 | /* Y, PS, WIM, TBR, PC, NPC, FPS, CPS regs */ | |
73937e03 AC |
985 | deprecated_read_register_bytes (REGISTER_BYTE (Y_REGNUM), |
986 | ®ister_temp[0], | |
987 | REGISTER_RAW_SIZE (Y_REGNUM) * 8); | |
5af923b0 | 988 | } |
c906108c | 989 | |
73937e03 AC |
990 | deprecated_read_register_bytes (REGISTER_BYTE (O0_REGNUM), |
991 | ®ister_temp[8 * SPARC_INTREG_SIZE], | |
992 | SPARC_INTREG_SIZE * 8); | |
c906108c | 993 | |
73937e03 AC |
994 | deprecated_read_register_bytes (REGISTER_BYTE (G0_REGNUM), |
995 | ®ister_temp[16 * SPARC_INTREG_SIZE], | |
996 | SPARC_INTREG_SIZE * 8); | |
c906108c | 997 | |
5af923b0 | 998 | if (SPARC_HAS_FPU) |
73937e03 AC |
999 | deprecated_read_register_bytes (REGISTER_BYTE (FP0_REGNUM), |
1000 | ®ister_temp[24 * SPARC_INTREG_SIZE], | |
1001 | FP_REGISTER_BYTES); | |
c906108c SS |
1002 | |
1003 | sp -= DUMMY_STACK_SIZE; | |
1004 | ||
6c0e89ed | 1005 | DEPRECATED_DUMMY_WRITE_SP (sp); |
c906108c SS |
1006 | |
1007 | write_memory (sp + DUMMY_REG_SAVE_OFFSET, ®ister_temp[0], | |
1008 | DUMMY_STACK_REG_BUF_SIZE); | |
1009 | ||
1010 | if (strcmp (target_shortname, "sim") != 0) | |
1011 | { | |
2757dd86 AC |
1012 | /* NOTE: cagney/2002-04-04: The code below originally contained |
1013 | GDB's _only_ call to write_fp(). That call was eliminated by | |
1014 | inlining the corresponding code. For the 64 bit case, the | |
1015 | old function (sparc64_write_fp) did the below although I'm | |
1016 | not clear why. The same goes for why this is only done when | |
1017 | the underlying target is a simulator. */ | |
f32e7a74 | 1018 | if (GDB_TARGET_IS_SPARC64) |
2757dd86 AC |
1019 | { |
1020 | /* Target is a 64 bit SPARC. */ | |
0ba6dca9 | 1021 | CORE_ADDR oldfp = read_register (DEPRECATED_FP_REGNUM); |
2757dd86 | 1022 | if (oldfp & 1) |
0ba6dca9 | 1023 | write_register (DEPRECATED_FP_REGNUM, old_sp - 2047); |
2757dd86 | 1024 | else |
0ba6dca9 | 1025 | write_register (DEPRECATED_FP_REGNUM, old_sp); |
2757dd86 AC |
1026 | } |
1027 | else | |
1028 | { | |
1029 | /* Target is a 32 bit SPARC. */ | |
0ba6dca9 | 1030 | write_register (DEPRECATED_FP_REGNUM, old_sp); |
2757dd86 | 1031 | } |
c906108c | 1032 | /* Set return address register for the call dummy to the current PC. */ |
c5aa993b | 1033 | write_register (I7_REGNUM, read_pc () - 8); |
c906108c SS |
1034 | } |
1035 | else | |
1036 | { | |
1037 | /* The call dummy will write this value to FP before executing | |
1038 | the 'save'. This ensures that register window flushes work | |
c5aa993b | 1039 | correctly in the simulator. */ |
0ba6dca9 | 1040 | write_register (G0_REGNUM + 1, read_register (DEPRECATED_FP_REGNUM)); |
c5aa993b | 1041 | |
c906108c SS |
1042 | /* The call dummy will write this value to FP after executing |
1043 | the 'save'. */ | |
c5aa993b JM |
1044 | write_register (G0_REGNUM + 2, old_sp); |
1045 | ||
c906108c | 1046 | /* The call dummy will write this value to the return address (%i7) after |
c5aa993b JM |
1047 | executing the 'save'. */ |
1048 | write_register (G0_REGNUM + 3, read_pc () - 8); | |
1049 | ||
c906108c | 1050 | /* Set the FP that the call dummy will be using after the 'save'. |
c5aa993b | 1051 | This makes backtraces from an inferior function call work properly. */ |
0ba6dca9 | 1052 | write_register (DEPRECATED_FP_REGNUM, old_sp); |
c906108c SS |
1053 | } |
1054 | } | |
1055 | ||
1056 | /* sparc_frame_find_saved_regs (). This function is here only because | |
1057 | pop_frame uses it. Note there is an interesting corner case which | |
1058 | I think few ports of GDB get right--if you are popping a frame | |
1059 | which does not save some register that *is* saved by a more inner | |
1060 | frame (such a frame will never be a dummy frame because dummy | |
ac2adee5 AC |
1061 | frames save all registers). |
1062 | ||
1063 | NOTE: cagney/2003-03-12: Since pop_frame has been rewritten to use | |
1064 | frame_unwind_register() the need for this function is questionable. | |
c906108c | 1065 | |
5af923b0 | 1066 | Stores, into an array of CORE_ADDR, |
c906108c SS |
1067 | the addresses of the saved registers of frame described by FRAME_INFO. |
1068 | This includes special registers such as pc and fp saved in special | |
1069 | ways in the stack frame. sp is even more special: | |
1070 | the address we return for it IS the sp for the next frame. | |
1071 | ||
1072 | Note that on register window machines, we are currently making the | |
1073 | assumption that window registers are being saved somewhere in the | |
1074 | frame in which they are being used. If they are stored in an | |
1075 | inferior frame, find_saved_register will break. | |
1076 | ||
1077 | On the Sun 4, the only time all registers are saved is when | |
1078 | a dummy frame is involved. Otherwise, the only saved registers | |
1079 | are the LOCAL and IN registers which are saved as a result | |
1080 | of the "save/restore" opcodes. This condition is determined | |
1081 | by address rather than by value. | |
1082 | ||
1083 | The "pc" is not stored in a frame on the SPARC. (What is stored | |
1084 | is a return address minus 8.) sparc_pop_frame knows how to | |
1085 | deal with that. Other routines might or might not. | |
1086 | ||
1087 | See tm-sparc.h (PUSH_DUMMY_FRAME and friends) for CRITICAL information | |
1088 | about how this works. */ | |
1089 | ||
5af923b0 | 1090 | static void sparc_frame_find_saved_regs (struct frame_info *, CORE_ADDR *); |
c906108c SS |
1091 | |
1092 | static void | |
fba45db2 | 1093 | sparc_frame_find_saved_regs (struct frame_info *fi, CORE_ADDR *saved_regs_addr) |
c906108c SS |
1094 | { |
1095 | register int regnum; | |
c193f6ac | 1096 | CORE_ADDR frame_addr = get_frame_base (fi); |
c906108c | 1097 | |
43bd9a9e | 1098 | gdb_assert (fi != NULL); |
c906108c | 1099 | |
5af923b0 | 1100 | memset (saved_regs_addr, 0, NUM_REGS * sizeof (CORE_ADDR)); |
c906108c | 1101 | |
da50a4b7 AC |
1102 | if (get_frame_pc (fi) >= (get_frame_extra_info (fi)->bottom |
1103 | ? get_frame_extra_info (fi)->bottom | |
1104 | : read_sp ()) | |
50abf9e5 | 1105 | && get_frame_pc (fi) <= get_frame_base (fi)) |
c906108c SS |
1106 | { |
1107 | /* Dummy frame. All but the window regs are in there somewhere. */ | |
c5aa993b | 1108 | for (regnum = G1_REGNUM; regnum < G1_REGNUM + 7; regnum++) |
5af923b0 | 1109 | saved_regs_addr[regnum] = |
c906108c | 1110 | frame_addr + (regnum - G0_REGNUM) * SPARC_INTREG_SIZE |
c5aa993b | 1111 | - DUMMY_STACK_REG_BUF_SIZE + 16 * SPARC_INTREG_SIZE; |
5af923b0 | 1112 | |
c5aa993b | 1113 | for (regnum = I0_REGNUM; regnum < I0_REGNUM + 8; regnum++) |
5af923b0 | 1114 | saved_regs_addr[regnum] = |
c906108c | 1115 | frame_addr + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE |
c5aa993b | 1116 | - DUMMY_STACK_REG_BUF_SIZE + 8 * SPARC_INTREG_SIZE; |
60054393 | 1117 | |
5af923b0 MS |
1118 | if (SPARC_HAS_FPU) |
1119 | for (regnum = FP0_REGNUM; regnum < FP_MAX_REGNUM; regnum++) | |
1120 | saved_regs_addr[regnum] = frame_addr + (regnum - FP0_REGNUM) * 4 | |
1121 | - DUMMY_STACK_REG_BUF_SIZE + 24 * SPARC_INTREG_SIZE; | |
1122 | ||
1123 | if (GDB_TARGET_IS_SPARC64) | |
c906108c | 1124 | { |
5af923b0 MS |
1125 | for (regnum = PC_REGNUM; regnum < PC_REGNUM + 7; regnum++) |
1126 | { | |
1127 | saved_regs_addr[regnum] = | |
1128 | frame_addr + (regnum - PC_REGNUM) * SPARC_INTREG_SIZE | |
1129 | - DUMMY_STACK_REG_BUF_SIZE; | |
1130 | } | |
1131 | saved_regs_addr[PSTATE_REGNUM] = | |
1132 | frame_addr + 8 * SPARC_INTREG_SIZE - DUMMY_STACK_REG_BUF_SIZE; | |
c906108c | 1133 | } |
5af923b0 MS |
1134 | else |
1135 | for (regnum = Y_REGNUM; regnum < NUM_REGS; regnum++) | |
1136 | saved_regs_addr[regnum] = | |
1137 | frame_addr + (regnum - Y_REGNUM) * SPARC_INTREG_SIZE | |
1138 | - DUMMY_STACK_REG_BUF_SIZE; | |
1139 | ||
da50a4b7 AC |
1140 | frame_addr = (get_frame_extra_info (fi)->bottom |
1141 | ? get_frame_extra_info (fi)->bottom | |
1142 | : read_sp ()); | |
c906108c | 1143 | } |
da50a4b7 | 1144 | else if (get_frame_extra_info (fi)->flat) |
c906108c SS |
1145 | { |
1146 | CORE_ADDR func_start; | |
50abf9e5 | 1147 | find_pc_partial_function (get_frame_pc (fi), NULL, &func_start, NULL); |
c906108c SS |
1148 | examine_prologue (func_start, 0, fi, saved_regs_addr); |
1149 | ||
1150 | /* Flat register window frame. */ | |
da50a4b7 AC |
1151 | saved_regs_addr[RP_REGNUM] = get_frame_extra_info (fi)->pc_addr; |
1152 | saved_regs_addr[I7_REGNUM] = get_frame_extra_info (fi)->fp_addr; | |
c906108c SS |
1153 | } |
1154 | else | |
1155 | { | |
1156 | /* Normal frame. Just Local and In registers */ | |
da50a4b7 AC |
1157 | frame_addr = (get_frame_extra_info (fi)->bottom |
1158 | ? get_frame_extra_info (fi)->bottom | |
1159 | : read_sp ()); | |
c5aa993b | 1160 | for (regnum = L0_REGNUM; regnum < L0_REGNUM + 8; regnum++) |
5af923b0 | 1161 | saved_regs_addr[regnum] = |
c906108c SS |
1162 | (frame_addr + (regnum - L0_REGNUM) * SPARC_INTREG_SIZE |
1163 | + FRAME_SAVED_L0); | |
c5aa993b | 1164 | for (regnum = I0_REGNUM; regnum < I0_REGNUM + 8; regnum++) |
5af923b0 | 1165 | saved_regs_addr[regnum] = |
c906108c SS |
1166 | (frame_addr + (regnum - I0_REGNUM) * SPARC_INTREG_SIZE |
1167 | + FRAME_SAVED_I0); | |
1168 | } | |
11c02a10 | 1169 | if (get_next_frame (fi)) |
c906108c | 1170 | { |
da50a4b7 | 1171 | if (get_frame_extra_info (fi)->flat) |
c906108c | 1172 | { |
da50a4b7 | 1173 | saved_regs_addr[O7_REGNUM] = get_frame_extra_info (fi)->pc_addr; |
c906108c SS |
1174 | } |
1175 | else | |
1176 | { | |
1177 | /* Pull off either the next frame pointer or the stack pointer */ | |
1178 | CORE_ADDR next_next_frame_addr = | |
da50a4b7 AC |
1179 | (get_frame_extra_info (get_next_frame (fi))->bottom |
1180 | ? get_frame_extra_info (get_next_frame (fi))->bottom | |
1181 | : read_sp ()); | |
c5aa993b | 1182 | for (regnum = O0_REGNUM; regnum < O0_REGNUM + 8; regnum++) |
5af923b0 | 1183 | saved_regs_addr[regnum] = |
c906108c SS |
1184 | (next_next_frame_addr |
1185 | + (regnum - O0_REGNUM) * SPARC_INTREG_SIZE | |
1186 | + FRAME_SAVED_I0); | |
1187 | } | |
1188 | } | |
1189 | /* Otherwise, whatever we would get from ptrace(GETREGS) is accurate */ | |
1190 | /* FIXME -- should this adjust for the sparc64 offset? */ | |
c193f6ac | 1191 | saved_regs_addr[SP_REGNUM] = get_frame_base (fi); |
c906108c SS |
1192 | } |
1193 | ||
1194 | /* Discard from the stack the innermost frame, restoring all saved registers. | |
1195 | ||
95486978 AC |
1196 | Note that the values stored in fsr by |
1197 | deprecated_get_frame_saved_regs are *in the context of the called | |
1198 | frame*. What this means is that the i regs of fsr must be restored | |
1199 | into the o regs of the (calling) frame that we pop into. We don't | |
1200 | care about the output regs of the calling frame, since unless it's | |
1201 | a dummy frame, it won't have any output regs in it. | |
c906108c SS |
1202 | |
1203 | We never have to bother with %l (local) regs, since the called routine's | |
1204 | locals get tossed, and the calling routine's locals are already saved | |
1205 | on its stack. */ | |
1206 | ||
1207 | /* Definitely see tm-sparc.h for more doc of the frame format here. */ | |
1208 | ||
1209 | void | |
fba45db2 | 1210 | sparc_pop_frame (void) |
c906108c SS |
1211 | { |
1212 | register struct frame_info *frame = get_current_frame (); | |
1213 | register CORE_ADDR pc; | |
5af923b0 MS |
1214 | CORE_ADDR *fsr; |
1215 | char *raw_buffer; | |
c906108c SS |
1216 | int regnum; |
1217 | ||
5af923b0 | 1218 | fsr = alloca (NUM_REGS * sizeof (CORE_ADDR)); |
b8b527c5 | 1219 | raw_buffer = alloca (DEPRECATED_REGISTER_BYTES); |
5af923b0 MS |
1220 | sparc_frame_find_saved_regs (frame, &fsr[0]); |
1221 | if (SPARC_HAS_FPU) | |
c906108c | 1222 | { |
5af923b0 | 1223 | if (fsr[FP0_REGNUM]) |
60054393 | 1224 | { |
5af923b0 | 1225 | read_memory (fsr[FP0_REGNUM], raw_buffer, FP_REGISTER_BYTES); |
73937e03 AC |
1226 | deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM), |
1227 | raw_buffer, FP_REGISTER_BYTES); | |
60054393 | 1228 | } |
5af923b0 | 1229 | if (!(GDB_TARGET_IS_SPARC64)) |
60054393 | 1230 | { |
5af923b0 MS |
1231 | if (fsr[FPS_REGNUM]) |
1232 | { | |
1233 | read_memory (fsr[FPS_REGNUM], raw_buffer, SPARC_INTREG_SIZE); | |
4caf0990 | 1234 | deprecated_write_register_gen (FPS_REGNUM, raw_buffer); |
5af923b0 MS |
1235 | } |
1236 | if (fsr[CPS_REGNUM]) | |
1237 | { | |
1238 | read_memory (fsr[CPS_REGNUM], raw_buffer, SPARC_INTREG_SIZE); | |
4caf0990 | 1239 | deprecated_write_register_gen (CPS_REGNUM, raw_buffer); |
5af923b0 | 1240 | } |
60054393 | 1241 | } |
60054393 | 1242 | } |
5af923b0 | 1243 | if (fsr[G1_REGNUM]) |
c906108c | 1244 | { |
5af923b0 | 1245 | read_memory (fsr[G1_REGNUM], raw_buffer, 7 * SPARC_INTREG_SIZE); |
73937e03 AC |
1246 | deprecated_write_register_bytes (REGISTER_BYTE (G1_REGNUM), raw_buffer, |
1247 | 7 * SPARC_INTREG_SIZE); | |
c906108c SS |
1248 | } |
1249 | ||
da50a4b7 | 1250 | if (get_frame_extra_info (frame)->flat) |
c906108c SS |
1251 | { |
1252 | /* Each register might or might not have been saved, need to test | |
c5aa993b | 1253 | individually. */ |
c906108c | 1254 | for (regnum = L0_REGNUM; regnum < L0_REGNUM + 8; ++regnum) |
5af923b0 MS |
1255 | if (fsr[regnum]) |
1256 | write_register (regnum, read_memory_integer (fsr[regnum], | |
c906108c SS |
1257 | SPARC_INTREG_SIZE)); |
1258 | for (regnum = I0_REGNUM; regnum < I0_REGNUM + 8; ++regnum) | |
5af923b0 MS |
1259 | if (fsr[regnum]) |
1260 | write_register (regnum, read_memory_integer (fsr[regnum], | |
c906108c SS |
1261 | SPARC_INTREG_SIZE)); |
1262 | ||
1263 | /* Handle all outs except stack pointer (o0-o5; o7). */ | |
1264 | for (regnum = O0_REGNUM; regnum < O0_REGNUM + 6; ++regnum) | |
5af923b0 MS |
1265 | if (fsr[regnum]) |
1266 | write_register (regnum, read_memory_integer (fsr[regnum], | |
c906108c | 1267 | SPARC_INTREG_SIZE)); |
5af923b0 | 1268 | if (fsr[O0_REGNUM + 7]) |
c906108c | 1269 | write_register (O0_REGNUM + 7, |
5af923b0 | 1270 | read_memory_integer (fsr[O0_REGNUM + 7], |
c906108c SS |
1271 | SPARC_INTREG_SIZE)); |
1272 | ||
6c0e89ed | 1273 | DEPRECATED_DUMMY_WRITE_SP (get_frame_base (frame)); |
c906108c | 1274 | } |
5af923b0 | 1275 | else if (fsr[I0_REGNUM]) |
c906108c SS |
1276 | { |
1277 | CORE_ADDR sp; | |
1278 | ||
5af923b0 MS |
1279 | char *reg_temp; |
1280 | ||
69cdf6a2 | 1281 | reg_temp = alloca (SPARC_INTREG_SIZE * 16); |
c906108c | 1282 | |
5af923b0 | 1283 | read_memory (fsr[I0_REGNUM], raw_buffer, 8 * SPARC_INTREG_SIZE); |
c906108c SS |
1284 | |
1285 | /* Get the ins and locals which we are about to restore. Just | |
c5aa993b JM |
1286 | moving the stack pointer is all that is really needed, except |
1287 | store_inferior_registers is then going to write the ins and | |
1288 | locals from the registers array, so we need to muck with the | |
1289 | registers array. */ | |
5af923b0 MS |
1290 | sp = fsr[SP_REGNUM]; |
1291 | ||
1292 | if (GDB_TARGET_IS_SPARC64 && (sp & 1)) | |
c906108c | 1293 | sp += 2047; |
5af923b0 | 1294 | |
c906108c SS |
1295 | read_memory (sp, reg_temp, SPARC_INTREG_SIZE * 16); |
1296 | ||
1297 | /* Restore the out registers. | |
c5aa993b | 1298 | Among other things this writes the new stack pointer. */ |
73937e03 AC |
1299 | deprecated_write_register_bytes (REGISTER_BYTE (O0_REGNUM), raw_buffer, |
1300 | SPARC_INTREG_SIZE * 8); | |
c906108c | 1301 | |
73937e03 AC |
1302 | deprecated_write_register_bytes (REGISTER_BYTE (L0_REGNUM), reg_temp, |
1303 | SPARC_INTREG_SIZE * 16); | |
c906108c | 1304 | } |
5af923b0 MS |
1305 | |
1306 | if (!(GDB_TARGET_IS_SPARC64)) | |
1307 | if (fsr[PS_REGNUM]) | |
1308 | write_register (PS_REGNUM, | |
1309 | read_memory_integer (fsr[PS_REGNUM], | |
1310 | REGISTER_RAW_SIZE (PS_REGNUM))); | |
1311 | ||
1312 | if (fsr[Y_REGNUM]) | |
1313 | write_register (Y_REGNUM, | |
1314 | read_memory_integer (fsr[Y_REGNUM], | |
1315 | REGISTER_RAW_SIZE (Y_REGNUM))); | |
1316 | if (fsr[PC_REGNUM]) | |
c906108c SS |
1317 | { |
1318 | /* Explicitly specified PC (and maybe NPC) -- just restore them. */ | |
5af923b0 MS |
1319 | write_register (PC_REGNUM, |
1320 | read_memory_integer (fsr[PC_REGNUM], | |
1321 | REGISTER_RAW_SIZE (PC_REGNUM))); | |
1322 | if (fsr[NPC_REGNUM]) | |
c906108c | 1323 | write_register (NPC_REGNUM, |
5af923b0 MS |
1324 | read_memory_integer (fsr[NPC_REGNUM], |
1325 | REGISTER_RAW_SIZE (NPC_REGNUM))); | |
c906108c | 1326 | } |
da50a4b7 | 1327 | else if (get_frame_extra_info (frame)->flat) |
c906108c | 1328 | { |
da50a4b7 | 1329 | if (get_frame_extra_info (frame)->pc_addr) |
c906108c | 1330 | pc = PC_ADJUST ((CORE_ADDR) |
da50a4b7 | 1331 | read_memory_integer (get_frame_extra_info (frame)->pc_addr, |
c906108c SS |
1332 | REGISTER_RAW_SIZE (PC_REGNUM))); |
1333 | else | |
1334 | { | |
1335 | /* I think this happens only in the innermost frame, if so then | |
1336 | it is a complicated way of saying | |
1337 | "pc = read_register (O7_REGNUM);". */ | |
ac2adee5 AC |
1338 | ULONGEST tmp; |
1339 | frame_read_unsigned_register (frame, O7_REGNUM, &tmp); | |
1340 | pc = PC_ADJUST (tmp); | |
c906108c SS |
1341 | } |
1342 | ||
c5aa993b | 1343 | write_register (PC_REGNUM, pc); |
c906108c SS |
1344 | write_register (NPC_REGNUM, pc + 4); |
1345 | } | |
5af923b0 | 1346 | else if (fsr[I7_REGNUM]) |
c906108c SS |
1347 | { |
1348 | /* Return address in %i7 -- adjust it, then restore PC and NPC from it */ | |
5af923b0 | 1349 | pc = PC_ADJUST ((CORE_ADDR) read_memory_integer (fsr[I7_REGNUM], |
c906108c | 1350 | SPARC_INTREG_SIZE)); |
c5aa993b | 1351 | write_register (PC_REGNUM, pc); |
c906108c SS |
1352 | write_register (NPC_REGNUM, pc + 4); |
1353 | } | |
1354 | flush_cached_frames (); | |
1355 | } | |
1356 | ||
1357 | /* On the Sun 4 under SunOS, the compile will leave a fake insn which | |
1358 | encodes the structure size being returned. If we detect such | |
1359 | a fake insn, step past it. */ | |
1360 | ||
1361 | CORE_ADDR | |
fba45db2 | 1362 | sparc_pc_adjust (CORE_ADDR pc) |
c906108c SS |
1363 | { |
1364 | unsigned long insn; | |
1365 | char buf[4]; | |
1366 | int err; | |
1367 | ||
1368 | err = target_read_memory (pc + 8, buf, 4); | |
1369 | insn = extract_unsigned_integer (buf, 4); | |
1370 | if ((err == 0) && (insn & 0xffc00000) == 0) | |
c5aa993b | 1371 | return pc + 12; |
c906108c | 1372 | else |
c5aa993b | 1373 | return pc + 8; |
c906108c SS |
1374 | } |
1375 | ||
1376 | /* If pc is in a shared library trampoline, return its target. | |
1377 | The SunOs 4.x linker rewrites the jump table entries for PIC | |
1378 | compiled modules in the main executable to bypass the dynamic linker | |
1379 | with jumps of the form | |
c5aa993b JM |
1380 | sethi %hi(addr),%g1 |
1381 | jmp %g1+%lo(addr) | |
c906108c SS |
1382 | and removes the corresponding jump table relocation entry in the |
1383 | dynamic relocations. | |
1384 | find_solib_trampoline_target relies on the presence of the jump | |
1385 | table relocation entry, so we have to detect these jump instructions | |
1386 | by hand. */ | |
1387 | ||
1388 | CORE_ADDR | |
fba45db2 | 1389 | sunos4_skip_trampoline_code (CORE_ADDR pc) |
c906108c SS |
1390 | { |
1391 | unsigned long insn1; | |
1392 | char buf[4]; | |
1393 | int err; | |
1394 | ||
1395 | err = target_read_memory (pc, buf, 4); | |
1396 | insn1 = extract_unsigned_integer (buf, 4); | |
1397 | if (err == 0 && (insn1 & 0xffc00000) == 0x03000000) | |
1398 | { | |
1399 | unsigned long insn2; | |
1400 | ||
1401 | err = target_read_memory (pc + 4, buf, 4); | |
1402 | insn2 = extract_unsigned_integer (buf, 4); | |
1403 | if (err == 0 && (insn2 & 0xffffe000) == 0x81c06000) | |
1404 | { | |
1405 | CORE_ADDR target_pc = (insn1 & 0x3fffff) << 10; | |
1406 | int delta = insn2 & 0x1fff; | |
1407 | ||
1408 | /* Sign extend the displacement. */ | |
1409 | if (delta & 0x1000) | |
1410 | delta |= ~0x1fff; | |
1411 | return target_pc + delta; | |
1412 | } | |
1413 | } | |
1414 | return find_solib_trampoline_target (pc); | |
1415 | } | |
1416 | \f | |
c5aa993b | 1417 | #ifdef USE_PROC_FS /* Target dependent support for /proc */ |
9846de1b | 1418 | /* *INDENT-OFF* */ |
c906108c SS |
1419 | /* The /proc interface divides the target machine's register set up into |
1420 | two different sets, the general register set (gregset) and the floating | |
1421 | point register set (fpregset). For each set, there is an ioctl to get | |
1422 | the current register set and another ioctl to set the current values. | |
1423 | ||
1424 | The actual structure passed through the ioctl interface is, of course, | |
1425 | naturally machine dependent, and is different for each set of registers. | |
1426 | For the sparc for example, the general register set is typically defined | |
1427 | by: | |
1428 | ||
1429 | typedef int gregset_t[38]; | |
1430 | ||
1431 | #define R_G0 0 | |
1432 | ... | |
1433 | #define R_TBR 37 | |
1434 | ||
1435 | and the floating point set by: | |
1436 | ||
1437 | typedef struct prfpregset { | |
1438 | union { | |
1439 | u_long pr_regs[32]; | |
1440 | double pr_dregs[16]; | |
1441 | } pr_fr; | |
1442 | void * pr_filler; | |
1443 | u_long pr_fsr; | |
1444 | u_char pr_qcnt; | |
1445 | u_char pr_q_entrysize; | |
1446 | u_char pr_en; | |
1447 | u_long pr_q[64]; | |
1448 | } prfpregset_t; | |
1449 | ||
1450 | These routines provide the packing and unpacking of gregset_t and | |
1451 | fpregset_t formatted data. | |
1452 | ||
1453 | */ | |
9846de1b | 1454 | /* *INDENT-ON* */ |
c906108c SS |
1455 | |
1456 | /* Given a pointer to a general register set in /proc format (gregset_t *), | |
1457 | unpack the register contents and supply them as gdb's idea of the current | |
1458 | register values. */ | |
1459 | ||
1460 | void | |
fba45db2 | 1461 | supply_gregset (gdb_gregset_t *gregsetp) |
c906108c | 1462 | { |
5af923b0 MS |
1463 | prgreg_t *regp = (prgreg_t *) gregsetp; |
1464 | int regi, offset = 0; | |
1465 | ||
1466 | /* If the host is 64-bit sparc, but the target is 32-bit sparc, | |
1467 | then the gregset may contain 64-bit ints while supply_register | |
1468 | is expecting 32-bit ints. Compensate. */ | |
1469 | if (sizeof (regp[0]) == 8 && SPARC_INTREG_SIZE == 4) | |
1470 | offset = 4; | |
c906108c SS |
1471 | |
1472 | /* GDB register numbers for Gn, On, Ln, In all match /proc reg numbers. */ | |
5af923b0 | 1473 | /* FIXME MVS: assumes the order of the first 32 elements... */ |
c5aa993b | 1474 | for (regi = G0_REGNUM; regi <= I7_REGNUM; regi++) |
c906108c | 1475 | { |
5af923b0 | 1476 | supply_register (regi, ((char *) (regp + regi)) + offset); |
c906108c SS |
1477 | } |
1478 | ||
1479 | /* These require a bit more care. */ | |
5af923b0 MS |
1480 | supply_register (PC_REGNUM, ((char *) (regp + R_PC)) + offset); |
1481 | supply_register (NPC_REGNUM, ((char *) (regp + R_nPC)) + offset); | |
1482 | supply_register (Y_REGNUM, ((char *) (regp + R_Y)) + offset); | |
1483 | ||
1484 | if (GDB_TARGET_IS_SPARC64) | |
1485 | { | |
1486 | #ifdef R_CCR | |
1487 | supply_register (CCR_REGNUM, ((char *) (regp + R_CCR)) + offset); | |
1488 | #else | |
1489 | supply_register (CCR_REGNUM, NULL); | |
1490 | #endif | |
1491 | #ifdef R_FPRS | |
1492 | supply_register (FPRS_REGNUM, ((char *) (regp + R_FPRS)) + offset); | |
1493 | #else | |
1494 | supply_register (FPRS_REGNUM, NULL); | |
1495 | #endif | |
1496 | #ifdef R_ASI | |
1497 | supply_register (ASI_REGNUM, ((char *) (regp + R_ASI)) + offset); | |
1498 | #else | |
1499 | supply_register (ASI_REGNUM, NULL); | |
1500 | #endif | |
1501 | } | |
1502 | else /* sparc32 */ | |
1503 | { | |
1504 | #ifdef R_PS | |
1505 | supply_register (PS_REGNUM, ((char *) (regp + R_PS)) + offset); | |
1506 | #else | |
1507 | supply_register (PS_REGNUM, NULL); | |
1508 | #endif | |
1509 | ||
1510 | /* For 64-bit hosts, R_WIM and R_TBR may not be defined. | |
1511 | Steal R_ASI and R_FPRS, and hope for the best! */ | |
1512 | ||
1513 | #if !defined (R_WIM) && defined (R_ASI) | |
1514 | #define R_WIM R_ASI | |
1515 | #endif | |
1516 | ||
1517 | #if !defined (R_TBR) && defined (R_FPRS) | |
1518 | #define R_TBR R_FPRS | |
1519 | #endif | |
1520 | ||
1521 | #if defined (R_WIM) | |
1522 | supply_register (WIM_REGNUM, ((char *) (regp + R_WIM)) + offset); | |
1523 | #else | |
1524 | supply_register (WIM_REGNUM, NULL); | |
1525 | #endif | |
1526 | ||
1527 | #if defined (R_TBR) | |
1528 | supply_register (TBR_REGNUM, ((char *) (regp + R_TBR)) + offset); | |
1529 | #else | |
1530 | supply_register (TBR_REGNUM, NULL); | |
1531 | #endif | |
1532 | } | |
c906108c SS |
1533 | |
1534 | /* Fill inaccessible registers with zero. */ | |
5af923b0 MS |
1535 | if (GDB_TARGET_IS_SPARC64) |
1536 | { | |
1537 | /* | |
1538 | * don't know how to get value of any of the following: | |
1539 | */ | |
1540 | supply_register (VER_REGNUM, NULL); | |
1541 | supply_register (TICK_REGNUM, NULL); | |
1542 | supply_register (PIL_REGNUM, NULL); | |
1543 | supply_register (PSTATE_REGNUM, NULL); | |
1544 | supply_register (TSTATE_REGNUM, NULL); | |
1545 | supply_register (TBA_REGNUM, NULL); | |
1546 | supply_register (TL_REGNUM, NULL); | |
1547 | supply_register (TT_REGNUM, NULL); | |
1548 | supply_register (TPC_REGNUM, NULL); | |
1549 | supply_register (TNPC_REGNUM, NULL); | |
1550 | supply_register (WSTATE_REGNUM, NULL); | |
1551 | supply_register (CWP_REGNUM, NULL); | |
1552 | supply_register (CANSAVE_REGNUM, NULL); | |
1553 | supply_register (CANRESTORE_REGNUM, NULL); | |
1554 | supply_register (CLEANWIN_REGNUM, NULL); | |
1555 | supply_register (OTHERWIN_REGNUM, NULL); | |
1556 | supply_register (ASR16_REGNUM, NULL); | |
1557 | supply_register (ASR17_REGNUM, NULL); | |
1558 | supply_register (ASR18_REGNUM, NULL); | |
1559 | supply_register (ASR19_REGNUM, NULL); | |
1560 | supply_register (ASR20_REGNUM, NULL); | |
1561 | supply_register (ASR21_REGNUM, NULL); | |
1562 | supply_register (ASR22_REGNUM, NULL); | |
1563 | supply_register (ASR23_REGNUM, NULL); | |
1564 | supply_register (ASR24_REGNUM, NULL); | |
1565 | supply_register (ASR25_REGNUM, NULL); | |
1566 | supply_register (ASR26_REGNUM, NULL); | |
1567 | supply_register (ASR27_REGNUM, NULL); | |
1568 | supply_register (ASR28_REGNUM, NULL); | |
1569 | supply_register (ASR29_REGNUM, NULL); | |
1570 | supply_register (ASR30_REGNUM, NULL); | |
1571 | supply_register (ASR31_REGNUM, NULL); | |
1572 | supply_register (ICC_REGNUM, NULL); | |
1573 | supply_register (XCC_REGNUM, NULL); | |
1574 | } | |
1575 | else | |
1576 | { | |
1577 | supply_register (CPS_REGNUM, NULL); | |
1578 | } | |
c906108c SS |
1579 | } |
1580 | ||
1581 | void | |
fba45db2 | 1582 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
c906108c | 1583 | { |
5af923b0 MS |
1584 | prgreg_t *regp = (prgreg_t *) gregsetp; |
1585 | int regi, offset = 0; | |
1586 | ||
1587 | /* If the host is 64-bit sparc, but the target is 32-bit sparc, | |
1588 | then the gregset may contain 64-bit ints while supply_register | |
1589 | is expecting 32-bit ints. Compensate. */ | |
1590 | if (sizeof (regp[0]) == 8 && SPARC_INTREG_SIZE == 4) | |
1591 | offset = 4; | |
c906108c | 1592 | |
c5aa993b | 1593 | for (regi = 0; regi <= R_I7; regi++) |
5af923b0 | 1594 | if ((regno == -1) || (regno == regi)) |
4caf0990 | 1595 | deprecated_read_register_gen (regi, (char *) (regp + regi) + offset); |
5af923b0 | 1596 | |
c906108c | 1597 | if ((regno == -1) || (regno == PC_REGNUM)) |
4caf0990 | 1598 | deprecated_read_register_gen (PC_REGNUM, (char *) (regp + R_PC) + offset); |
5af923b0 | 1599 | |
c906108c | 1600 | if ((regno == -1) || (regno == NPC_REGNUM)) |
4caf0990 | 1601 | deprecated_read_register_gen (NPC_REGNUM, (char *) (regp + R_nPC) + offset); |
5af923b0 MS |
1602 | |
1603 | if ((regno == -1) || (regno == Y_REGNUM)) | |
4caf0990 | 1604 | deprecated_read_register_gen (Y_REGNUM, (char *) (regp + R_Y) + offset); |
5af923b0 MS |
1605 | |
1606 | if (GDB_TARGET_IS_SPARC64) | |
c906108c | 1607 | { |
5af923b0 MS |
1608 | #ifdef R_CCR |
1609 | if (regno == -1 || regno == CCR_REGNUM) | |
4caf0990 | 1610 | deprecated_read_register_gen (CCR_REGNUM, ((char *) (regp + R_CCR)) + offset); |
5af923b0 MS |
1611 | #endif |
1612 | #ifdef R_FPRS | |
1613 | if (regno == -1 || regno == FPRS_REGNUM) | |
4caf0990 | 1614 | deprecated_read_register_gen (FPRS_REGNUM, ((char *) (regp + R_FPRS)) + offset); |
5af923b0 MS |
1615 | #endif |
1616 | #ifdef R_ASI | |
1617 | if (regno == -1 || regno == ASI_REGNUM) | |
4caf0990 | 1618 | deprecated_read_register_gen (ASI_REGNUM, ((char *) (regp + R_ASI)) + offset); |
5af923b0 | 1619 | #endif |
c906108c | 1620 | } |
5af923b0 | 1621 | else /* sparc32 */ |
c906108c | 1622 | { |
5af923b0 MS |
1623 | #ifdef R_PS |
1624 | if (regno == -1 || regno == PS_REGNUM) | |
4caf0990 | 1625 | deprecated_read_register_gen (PS_REGNUM, ((char *) (regp + R_PS)) + offset); |
5af923b0 MS |
1626 | #endif |
1627 | ||
1628 | /* For 64-bit hosts, R_WIM and R_TBR may not be defined. | |
1629 | Steal R_ASI and R_FPRS, and hope for the best! */ | |
1630 | ||
1631 | #if !defined (R_WIM) && defined (R_ASI) | |
1632 | #define R_WIM R_ASI | |
1633 | #endif | |
1634 | ||
1635 | #if !defined (R_TBR) && defined (R_FPRS) | |
1636 | #define R_TBR R_FPRS | |
1637 | #endif | |
1638 | ||
1639 | #if defined (R_WIM) | |
1640 | if (regno == -1 || regno == WIM_REGNUM) | |
4caf0990 | 1641 | deprecated_read_register_gen (WIM_REGNUM, ((char *) (regp + R_WIM)) + offset); |
5af923b0 MS |
1642 | #else |
1643 | if (regno == -1 || regno == WIM_REGNUM) | |
4caf0990 | 1644 | deprecated_read_register_gen (WIM_REGNUM, NULL); |
5af923b0 MS |
1645 | #endif |
1646 | ||
1647 | #if defined (R_TBR) | |
1648 | if (regno == -1 || regno == TBR_REGNUM) | |
4caf0990 | 1649 | deprecated_read_register_gen (TBR_REGNUM, ((char *) (regp + R_TBR)) + offset); |
5af923b0 MS |
1650 | #else |
1651 | if (regno == -1 || regno == TBR_REGNUM) | |
4caf0990 | 1652 | deprecated_read_register_gen (TBR_REGNUM, NULL); |
5af923b0 | 1653 | #endif |
c906108c SS |
1654 | } |
1655 | } | |
1656 | ||
c906108c | 1657 | /* Given a pointer to a floating point register set in /proc format |
c5aa993b JM |
1658 | (fpregset_t *), unpack the register contents and supply them as gdb's |
1659 | idea of the current floating point register values. */ | |
c906108c | 1660 | |
c5aa993b | 1661 | void |
fba45db2 | 1662 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
c906108c SS |
1663 | { |
1664 | register int regi; | |
1665 | char *from; | |
c5aa993b | 1666 | |
5af923b0 | 1667 | if (!SPARC_HAS_FPU) |
60054393 MS |
1668 | return; |
1669 | ||
c5aa993b | 1670 | for (regi = FP0_REGNUM; regi < FP_MAX_REGNUM; regi++) |
c906108c | 1671 | { |
c5aa993b | 1672 | from = (char *) &fpregsetp->pr_fr.pr_regs[regi - FP0_REGNUM]; |
c906108c SS |
1673 | supply_register (regi, from); |
1674 | } | |
5af923b0 MS |
1675 | |
1676 | if (GDB_TARGET_IS_SPARC64) | |
1677 | { | |
1678 | /* | |
1679 | * don't know how to get value of the following. | |
1680 | */ | |
1681 | supply_register (FSR_REGNUM, NULL); /* zero it out for now */ | |
1682 | supply_register (FCC0_REGNUM, NULL); | |
1683 | supply_register (FCC1_REGNUM, NULL); /* don't know how to get value */ | |
1684 | supply_register (FCC2_REGNUM, NULL); /* don't know how to get value */ | |
1685 | supply_register (FCC3_REGNUM, NULL); /* don't know how to get value */ | |
1686 | } | |
1687 | else | |
1688 | { | |
1689 | supply_register (FPS_REGNUM, (char *) &(fpregsetp->pr_fsr)); | |
1690 | } | |
c906108c SS |
1691 | } |
1692 | ||
1693 | /* Given a pointer to a floating point register set in /proc format | |
c5aa993b JM |
1694 | (fpregset_t *), update the register specified by REGNO from gdb's idea |
1695 | of the current floating point register set. If REGNO is -1, update | |
1696 | them all. */ | |
5af923b0 | 1697 | /* This will probably need some changes for sparc64. */ |
c906108c SS |
1698 | |
1699 | void | |
fba45db2 | 1700 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
c906108c SS |
1701 | { |
1702 | int regi; | |
1703 | char *to; | |
1704 | char *from; | |
1705 | ||
5af923b0 | 1706 | if (!SPARC_HAS_FPU) |
60054393 MS |
1707 | return; |
1708 | ||
c5aa993b | 1709 | for (regi = FP0_REGNUM; regi < FP_MAX_REGNUM; regi++) |
c906108c SS |
1710 | { |
1711 | if ((regno == -1) || (regno == regi)) | |
1712 | { | |
524d7c18 | 1713 | from = (char *) &deprecated_registers[REGISTER_BYTE (regi)]; |
c5aa993b | 1714 | to = (char *) &fpregsetp->pr_fr.pr_regs[regi - FP0_REGNUM]; |
c906108c SS |
1715 | memcpy (to, from, REGISTER_RAW_SIZE (regi)); |
1716 | } | |
1717 | } | |
5af923b0 MS |
1718 | |
1719 | if (!(GDB_TARGET_IS_SPARC64)) /* FIXME: does Sparc64 have this register? */ | |
1720 | if ((regno == -1) || (regno == FPS_REGNUM)) | |
1721 | { | |
524d7c18 | 1722 | from = (char *)&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)]; |
5af923b0 MS |
1723 | to = (char *) &fpregsetp->pr_fsr; |
1724 | memcpy (to, from, REGISTER_RAW_SIZE (FPS_REGNUM)); | |
1725 | } | |
c906108c SS |
1726 | } |
1727 | ||
c5aa993b | 1728 | #endif /* USE_PROC_FS */ |
c906108c | 1729 | |
a48442a0 RE |
1730 | /* Because of Multi-arch, GET_LONGJMP_TARGET is always defined. So test |
1731 | for a definition of JB_PC. */ | |
1732 | #ifdef JB_PC | |
c906108c SS |
1733 | |
1734 | /* Figure out where the longjmp will land. We expect that we have just entered | |
1735 | longjmp and haven't yet setup the stack frame, so the args are still in the | |
1736 | output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we | |
1737 | extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. | |
1738 | This routine returns true on success */ | |
1739 | ||
1740 | int | |
fba45db2 | 1741 | get_longjmp_target (CORE_ADDR *pc) |
c906108c SS |
1742 | { |
1743 | CORE_ADDR jb_addr; | |
1744 | #define LONGJMP_TARGET_SIZE 4 | |
1745 | char buf[LONGJMP_TARGET_SIZE]; | |
1746 | ||
1747 | jb_addr = read_register (O0_REGNUM); | |
1748 | ||
1749 | if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf, | |
1750 | LONGJMP_TARGET_SIZE)) | |
1751 | return 0; | |
1752 | ||
7c0b4a20 | 1753 | *pc = extract_unsigned_integer (buf, LONGJMP_TARGET_SIZE); |
c906108c SS |
1754 | |
1755 | return 1; | |
1756 | } | |
1757 | #endif /* GET_LONGJMP_TARGET */ | |
1758 | \f | |
1759 | #ifdef STATIC_TRANSFORM_NAME | |
1760 | /* SunPRO (3.0 at least), encodes the static variables. This is not | |
1761 | related to C++ mangling, it is done for C too. */ | |
1762 | ||
1763 | char * | |
fba45db2 | 1764 | sunpro_static_transform_name (char *name) |
c906108c SS |
1765 | { |
1766 | char *p; | |
1767 | if (name[0] == '$') | |
1768 | { | |
1769 | /* For file-local statics there will be a dollar sign, a bunch | |
c5aa993b JM |
1770 | of junk (the contents of which match a string given in the |
1771 | N_OPT), a period and the name. For function-local statics | |
1772 | there will be a bunch of junk (which seems to change the | |
1773 | second character from 'A' to 'B'), a period, the name of the | |
1774 | function, and the name. So just skip everything before the | |
1775 | last period. */ | |
c906108c SS |
1776 | p = strrchr (name, '.'); |
1777 | if (p != NULL) | |
1778 | name = p + 1; | |
1779 | } | |
1780 | return name; | |
1781 | } | |
1782 | #endif /* STATIC_TRANSFORM_NAME */ | |
1783 | \f | |
1784 | ||
1785 | /* Utilities for printing registers. | |
1786 | Page numbers refer to the SPARC Architecture Manual. */ | |
1787 | ||
5af923b0 | 1788 | static void dump_ccreg (char *, int); |
c906108c SS |
1789 | |
1790 | static void | |
fba45db2 | 1791 | dump_ccreg (char *reg, int val) |
c906108c SS |
1792 | { |
1793 | /* page 41 */ | |
1794 | printf_unfiltered ("%s:%s,%s,%s,%s", reg, | |
c5aa993b JM |
1795 | val & 8 ? "N" : "NN", |
1796 | val & 4 ? "Z" : "NZ", | |
1797 | val & 2 ? "O" : "NO", | |
5af923b0 | 1798 | val & 1 ? "C" : "NC"); |
c906108c SS |
1799 | } |
1800 | ||
1801 | static char * | |
fba45db2 | 1802 | decode_asi (int val) |
c906108c SS |
1803 | { |
1804 | /* page 72 */ | |
1805 | switch (val) | |
1806 | { | |
c5aa993b JM |
1807 | case 4: |
1808 | return "ASI_NUCLEUS"; | |
1809 | case 0x0c: | |
1810 | return "ASI_NUCLEUS_LITTLE"; | |
1811 | case 0x10: | |
1812 | return "ASI_AS_IF_USER_PRIMARY"; | |
1813 | case 0x11: | |
1814 | return "ASI_AS_IF_USER_SECONDARY"; | |
1815 | case 0x18: | |
1816 | return "ASI_AS_IF_USER_PRIMARY_LITTLE"; | |
1817 | case 0x19: | |
1818 | return "ASI_AS_IF_USER_SECONDARY_LITTLE"; | |
1819 | case 0x80: | |
1820 | return "ASI_PRIMARY"; | |
1821 | case 0x81: | |
1822 | return "ASI_SECONDARY"; | |
1823 | case 0x82: | |
1824 | return "ASI_PRIMARY_NOFAULT"; | |
1825 | case 0x83: | |
1826 | return "ASI_SECONDARY_NOFAULT"; | |
1827 | case 0x88: | |
1828 | return "ASI_PRIMARY_LITTLE"; | |
1829 | case 0x89: | |
1830 | return "ASI_SECONDARY_LITTLE"; | |
1831 | case 0x8a: | |
1832 | return "ASI_PRIMARY_NOFAULT_LITTLE"; | |
1833 | case 0x8b: | |
1834 | return "ASI_SECONDARY_NOFAULT_LITTLE"; | |
1835 | default: | |
1836 | return NULL; | |
c906108c SS |
1837 | } |
1838 | } | |
1839 | ||
867f3898 | 1840 | /* Pretty print various registers. */ |
c906108c SS |
1841 | /* FIXME: Would be nice if this did some fancy things for 32 bit sparc. */ |
1842 | ||
87647bb0 | 1843 | static void |
fba45db2 | 1844 | sparc_print_register_hook (int regno) |
c906108c SS |
1845 | { |
1846 | ULONGEST val; | |
1847 | ||
1848 | /* Handle double/quad versions of lower 32 fp regs. */ | |
1849 | if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32 | |
1850 | && (regno & 1) == 0) | |
1851 | { | |
1852 | char value[16]; | |
1853 | ||
6e7f8b9c AC |
1854 | if (frame_register_read (deprecated_selected_frame, regno, value) |
1855 | && frame_register_read (deprecated_selected_frame, regno + 1, value + 4)) | |
c906108c SS |
1856 | { |
1857 | printf_unfiltered ("\t"); | |
1858 | print_floating (value, builtin_type_double, gdb_stdout); | |
1859 | } | |
c5aa993b | 1860 | #if 0 /* FIXME: gdb doesn't handle long doubles */ |
c906108c SS |
1861 | if ((regno & 3) == 0) |
1862 | { | |
6e7f8b9c AC |
1863 | if (frame_register_read (deprecated_selected_frame, regno + 2, value + 8) |
1864 | && frame_register_read (deprecated_selected_frame, regno + 3, value + 12)) | |
c906108c SS |
1865 | { |
1866 | printf_unfiltered ("\t"); | |
1867 | print_floating (value, builtin_type_long_double, gdb_stdout); | |
1868 | } | |
1869 | } | |
1870 | #endif | |
1871 | return; | |
1872 | } | |
1873 | ||
c5aa993b | 1874 | #if 0 /* FIXME: gdb doesn't handle long doubles */ |
c906108c SS |
1875 | /* Print upper fp regs as long double if appropriate. */ |
1876 | if (regno >= FP0_REGNUM + 32 && regno < FP_MAX_REGNUM | |
c5aa993b JM |
1877 | /* We test for even numbered regs and not a multiple of 4 because |
1878 | the upper fp regs are recorded as doubles. */ | |
c906108c SS |
1879 | && (regno & 1) == 0) |
1880 | { | |
1881 | char value[16]; | |
1882 | ||
6e7f8b9c AC |
1883 | if (frame_register_read (deprecated_selected_frame, regno, value) |
1884 | && frame_register_read (deprecated_selected_frame, regno + 1, value + 8)) | |
c906108c SS |
1885 | { |
1886 | printf_unfiltered ("\t"); | |
1887 | print_floating (value, builtin_type_long_double, gdb_stdout); | |
1888 | } | |
1889 | return; | |
1890 | } | |
1891 | #endif | |
1892 | ||
1893 | /* FIXME: Some of these are priviledged registers. | |
1894 | Not sure how they should be handled. */ | |
1895 | ||
1896 | #define BITS(n, mask) ((int) (((val) >> (n)) & (mask))) | |
1897 | ||
1898 | val = read_register (regno); | |
1899 | ||
1900 | /* pages 40 - 60 */ | |
5af923b0 MS |
1901 | if (GDB_TARGET_IS_SPARC64) |
1902 | switch (regno) | |
c906108c | 1903 | { |
5af923b0 MS |
1904 | case CCR_REGNUM: |
1905 | printf_unfiltered ("\t"); | |
1906 | dump_ccreg ("xcc", val >> 4); | |
1907 | printf_unfiltered (", "); | |
1908 | dump_ccreg ("icc", val & 15); | |
c906108c | 1909 | break; |
5af923b0 MS |
1910 | case FPRS_REGNUM: |
1911 | printf ("\tfef:%d, du:%d, dl:%d", | |
1912 | BITS (2, 1), BITS (1, 1), BITS (0, 1)); | |
c906108c | 1913 | break; |
5af923b0 MS |
1914 | case FSR_REGNUM: |
1915 | { | |
1916 | static char *fcc[4] = | |
1917 | {"=", "<", ">", "?"}; | |
1918 | static char *rd[4] = | |
1919 | {"N", "0", "+", "-"}; | |
1920 | /* Long, but I'd rather leave it as is and use a wide screen. */ | |
1921 | printf_filtered ("\t0:%s, 1:%s, 2:%s, 3:%s, rd:%s, tem:%d, ", | |
1922 | fcc[BITS (10, 3)], fcc[BITS (32, 3)], | |
1923 | fcc[BITS (34, 3)], fcc[BITS (36, 3)], | |
1924 | rd[BITS (30, 3)], BITS (23, 31)); | |
1925 | printf_filtered ("ns:%d, ver:%d, ftt:%d, qne:%d, aexc:%d, cexc:%d", | |
1926 | BITS (22, 1), BITS (17, 7), BITS (14, 7), | |
1927 | BITS (13, 1), BITS (5, 31), BITS (0, 31)); | |
1928 | break; | |
1929 | } | |
1930 | case ASI_REGNUM: | |
1931 | { | |
1932 | char *asi = decode_asi (val); | |
1933 | if (asi != NULL) | |
1934 | printf ("\t%s", asi); | |
1935 | break; | |
1936 | } | |
1937 | case VER_REGNUM: | |
1938 | printf ("\tmanuf:%d, impl:%d, mask:%d, maxtl:%d, maxwin:%d", | |
1939 | BITS (48, 0xffff), BITS (32, 0xffff), | |
1940 | BITS (24, 0xff), BITS (8, 0xff), BITS (0, 31)); | |
1941 | break; | |
1942 | case PSTATE_REGNUM: | |
1943 | { | |
1944 | static char *mm[4] = | |
1945 | {"tso", "pso", "rso", "?"}; | |
1946 | printf_filtered ("\tcle:%d, tle:%d, mm:%s, red:%d, ", | |
1947 | BITS (9, 1), BITS (8, 1), | |
1948 | mm[BITS (6, 3)], BITS (5, 1)); | |
1949 | printf_filtered ("pef:%d, am:%d, priv:%d, ie:%d, ag:%d", | |
1950 | BITS (4, 1), BITS (3, 1), BITS (2, 1), | |
1951 | BITS (1, 1), BITS (0, 1)); | |
1952 | break; | |
1953 | } | |
1954 | case TSTATE_REGNUM: | |
1955 | /* FIXME: print all 4? */ | |
1956 | break; | |
1957 | case TT_REGNUM: | |
1958 | /* FIXME: print all 4? */ | |
1959 | break; | |
1960 | case TPC_REGNUM: | |
1961 | /* FIXME: print all 4? */ | |
1962 | break; | |
1963 | case TNPC_REGNUM: | |
1964 | /* FIXME: print all 4? */ | |
1965 | break; | |
1966 | case WSTATE_REGNUM: | |
1967 | printf ("\tother:%d, normal:%d", BITS (3, 7), BITS (0, 7)); | |
1968 | break; | |
1969 | case CWP_REGNUM: | |
1970 | printf ("\t%d", BITS (0, 31)); | |
1971 | break; | |
1972 | case CANSAVE_REGNUM: | |
1973 | printf ("\t%-2d before spill", BITS (0, 31)); | |
1974 | break; | |
1975 | case CANRESTORE_REGNUM: | |
1976 | printf ("\t%-2d before fill", BITS (0, 31)); | |
1977 | break; | |
1978 | case CLEANWIN_REGNUM: | |
1979 | printf ("\t%-2d before clean", BITS (0, 31)); | |
1980 | break; | |
1981 | case OTHERWIN_REGNUM: | |
1982 | printf ("\t%d", BITS (0, 31)); | |
c906108c SS |
1983 | break; |
1984 | } | |
5af923b0 MS |
1985 | else /* Sparc32 */ |
1986 | switch (regno) | |
c906108c | 1987 | { |
5af923b0 MS |
1988 | case PS_REGNUM: |
1989 | printf ("\ticc:%c%c%c%c, pil:%d, s:%d, ps:%d, et:%d, cwp:%d", | |
1990 | BITS (23, 1) ? 'N' : '-', BITS (22, 1) ? 'Z' : '-', | |
1991 | BITS (21, 1) ? 'V' : '-', BITS (20, 1) ? 'C' : '-', | |
1992 | BITS (8, 15), BITS (7, 1), BITS (6, 1), BITS (5, 1), | |
c906108c SS |
1993 | BITS (0, 31)); |
1994 | break; | |
5af923b0 MS |
1995 | case FPS_REGNUM: |
1996 | { | |
1997 | static char *fcc[4] = | |
1998 | {"=", "<", ">", "?"}; | |
1999 | static char *rd[4] = | |
2000 | {"N", "0", "+", "-"}; | |
2001 | /* Long, but I'd rather leave it as is and use a wide screen. */ | |
2002 | printf ("\trd:%s, tem:%d, ns:%d, ver:%d, ftt:%d, qne:%d, " | |
2003 | "fcc:%s, aexc:%d, cexc:%d", | |
2004 | rd[BITS (30, 3)], BITS (23, 31), BITS (22, 1), BITS (17, 7), | |
2005 | BITS (14, 7), BITS (13, 1), fcc[BITS (10, 3)], BITS (5, 31), | |
2006 | BITS (0, 31)); | |
2007 | break; | |
2008 | } | |
c906108c SS |
2009 | } |
2010 | ||
c906108c SS |
2011 | #undef BITS |
2012 | } | |
87647bb0 AC |
2013 | |
2014 | static void | |
2015 | sparc_print_registers (struct gdbarch *gdbarch, | |
2016 | struct ui_file *file, | |
2017 | struct frame_info *frame, | |
2018 | int regnum, int print_all, | |
2019 | void (*print_register_hook) (int)) | |
2020 | { | |
2021 | int i; | |
2022 | const int numregs = NUM_REGS + NUM_PSEUDO_REGS; | |
0c92afe8 AC |
2023 | char raw_buffer[MAX_REGISTER_SIZE]; |
2024 | char virtual_buffer[MAX_REGISTER_SIZE]; | |
87647bb0 AC |
2025 | |
2026 | for (i = 0; i < numregs; i++) | |
2027 | { | |
2028 | /* Decide between printing all regs, non-float / vector regs, or | |
2029 | specific reg. */ | |
2030 | if (regnum == -1) | |
2031 | { | |
2032 | if (!print_all) | |
2033 | { | |
2034 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
2035 | continue; | |
2036 | if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i))) | |
2037 | continue; | |
2038 | } | |
2039 | } | |
2040 | else | |
2041 | { | |
2042 | if (i != regnum) | |
2043 | continue; | |
2044 | } | |
2045 | ||
2046 | /* If the register name is empty, it is undefined for this | |
2047 | processor, so don't display anything. */ | |
2048 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') | |
2049 | continue; | |
2050 | ||
2051 | fputs_filtered (REGISTER_NAME (i), file); | |
2052 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), file); | |
2053 | ||
2054 | /* Get the data in raw format. */ | |
2055 | if (! frame_register_read (frame, i, raw_buffer)) | |
2056 | { | |
2057 | fprintf_filtered (file, "*value not available*\n"); | |
2058 | continue; | |
2059 | } | |
2060 | ||
bf7488d2 | 2061 | memcpy (virtual_buffer, raw_buffer, REGISTER_VIRTUAL_SIZE (i)); |
87647bb0 AC |
2062 | |
2063 | /* If virtual format is floating, print it that way, and in raw | |
2064 | hex. */ | |
2065 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
2066 | { | |
2067 | int j; | |
2068 | ||
2069 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
2070 | file, 0, 1, 0, Val_pretty_default); | |
2071 | ||
2072 | fprintf_filtered (file, "\t(raw 0x"); | |
2073 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
2074 | { | |
2075 | int idx; | |
2076 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) | |
2077 | idx = j; | |
2078 | else | |
2079 | idx = REGISTER_RAW_SIZE (i) - 1 - j; | |
2080 | fprintf_filtered (file, "%02x", (unsigned char) raw_buffer[idx]); | |
2081 | } | |
2082 | fprintf_filtered (file, ")"); | |
2083 | } | |
2084 | else | |
2085 | { | |
2086 | /* Print the register in hex. */ | |
2087 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
2088 | file, 'x', 1, 0, Val_pretty_default); | |
2089 | /* If not a vector register, print it also according to its | |
2090 | natural format. */ | |
2091 | if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i)) == 0) | |
2092 | { | |
2093 | fprintf_filtered (file, "\t"); | |
2094 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
2095 | file, 0, 1, 0, Val_pretty_default); | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | /* Some sparc specific info. */ | |
2100 | if (print_register_hook != NULL) | |
2101 | print_register_hook (i); | |
2102 | ||
2103 | fprintf_filtered (file, "\n"); | |
2104 | } | |
2105 | } | |
2106 | ||
2107 | static void | |
2108 | sparc_print_registers_info (struct gdbarch *gdbarch, | |
2109 | struct ui_file *file, | |
2110 | struct frame_info *frame, | |
2111 | int regnum, int print_all) | |
2112 | { | |
2113 | sparc_print_registers (gdbarch, file, frame, regnum, print_all, | |
2114 | sparc_print_register_hook); | |
2115 | } | |
2116 | ||
2117 | void | |
2118 | sparc_do_registers_info (int regnum, int all) | |
2119 | { | |
6e7f8b9c | 2120 | sparc_print_registers_info (current_gdbarch, gdb_stdout, deprecated_selected_frame, |
87647bb0 AC |
2121 | regnum, all); |
2122 | } | |
2123 | ||
f81824a9 AC |
2124 | #if 0 |
2125 | // OBSOLETE static void | |
2126 | // OBSOLETE sparclet_print_registers_info (struct gdbarch *gdbarch, | |
2127 | // OBSOLETE struct ui_file *file, | |
2128 | // OBSOLETE struct frame_info *frame, | |
2129 | // OBSOLETE int regnum, int print_all) | |
2130 | // OBSOLETE { | |
2131 | // OBSOLETE sparc_print_registers (gdbarch, file, frame, regnum, print_all, NULL); | |
2132 | // OBSOLETE } | |
2133 | // OBSOLETE | |
2134 | // OBSOLETE void | |
2135 | // OBSOLETE sparclet_do_registers_info (int regnum, int all) | |
2136 | // OBSOLETE { | |
2137 | // OBSOLETE sparclet_print_registers_info (current_gdbarch, gdb_stdout, | |
2138 | // OBSOLETE deprecated_selected_frame, regnum, all); | |
2139 | // OBSOLETE } | |
2140 | #endif | |
87647bb0 | 2141 | |
c906108c | 2142 | \f |
a78f21af | 2143 | static int |
fba45db2 | 2144 | gdb_print_insn_sparc (bfd_vma memaddr, disassemble_info *info) |
c906108c SS |
2145 | { |
2146 | /* It's necessary to override mach again because print_insn messes it up. */ | |
96baa820 | 2147 | info->mach = TARGET_ARCHITECTURE->mach; |
c906108c SS |
2148 | return print_insn_sparc (memaddr, info); |
2149 | } | |
2150 | \f | |
c906108c | 2151 | |
eb2c22dc MK |
2152 | #define SPARC_F0_REGNUM FP0_REGNUM /* %f0 */ |
2153 | #define SPARC_F1_REGNUM (FP0_REGNUM + 1)/* %f1 */ | |
2154 | #define SPARC_O0_REGNUM O0_REGNUM /* %o0 */ | |
2155 | #define SPARC_O1_REGNUM O1_REGNUM /* %o1 */ | |
2156 | ||
2157 | /* Push the arguments onto the stack and into the appropriate registers. */ | |
2158 | ||
2159 | static CORE_ADDR | |
2160 | sparc32_do_push_arguments (struct regcache *regcache, int nargs, | |
2161 | struct value **args, CORE_ADDR sp) | |
c906108c | 2162 | { |
eb2c22dc MK |
2163 | CORE_ADDR *addr; |
2164 | int size = 0; | |
2165 | int i; | |
2166 | ||
2167 | /* Structure, union and quad-precision arguments are passed by | |
2168 | reference. We allocate space for these arguments on the stack | |
2169 | and record their addresses in an array. Array elements for | |
2170 | arguments that are passed by value will be set to zero.*/ | |
2171 | addr = alloca (nargs * sizeof (CORE_ADDR)); | |
2172 | ||
2173 | for (i = nargs - 1; i >= 0; i--) | |
c906108c | 2174 | { |
eb2c22dc MK |
2175 | struct type *type = VALUE_ENCLOSING_TYPE (args[i]); |
2176 | enum type_code code = TYPE_CODE (type); | |
2177 | int len = TYPE_LENGTH (type); | |
2178 | ||
2179 | /* Push the contents of structure, union and quad-precision | |
2180 | arguments on the stack. */ | |
2181 | if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION || len > 8) | |
2182 | { | |
2183 | /* Keep the stack doubleword aligned. */ | |
2184 | sp -= (len + 7) & ~7; | |
2185 | write_memory (sp, VALUE_CONTENTS_ALL (args[i]), len); | |
2186 | addr[i] = sp; | |
2187 | size += 4; | |
2188 | } | |
2189 | else | |
2190 | { | |
2191 | addr[i] = 0; | |
2192 | size += (len > 4) ? 8 : 4; | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | /* The needed space for outgoing arguments should be a multiple of 4. */ | |
2197 | gdb_assert (size % 4 == 0); | |
2198 | ||
2199 | /* Make sure we reserve space for the first six words of arguments | |
2200 | in the stack frame, even if we don't need them. */ | |
2201 | if (size < 24) | |
2202 | sp -= (24 - size); | |
2203 | ||
2204 | /* Make sure we end up with a doubleword aligned stack in the end. | |
2205 | Reserve an extra word if necessary in order to accomplish this. */ | |
2206 | if ((sp - size) % 8 == 0) | |
2207 | sp -= 4; | |
2208 | ||
2209 | /* Now push the arguments onto the stack. */ | |
2210 | for (i = nargs - 1; i >=0; i--) | |
c906108c | 2211 | { |
eb2c22dc MK |
2212 | char buf[8]; |
2213 | int len; | |
2214 | ||
2215 | if (addr[i]) | |
c906108c | 2216 | { |
eb2c22dc MK |
2217 | store_unsigned_integer (buf, 4, addr[i]); |
2218 | len = 4; | |
2219 | } | |
2220 | else | |
2221 | { | |
2222 | struct value *arg = args[i]; | |
2223 | ||
2224 | len = TYPE_LENGTH (VALUE_ENCLOSING_TYPE (arg)); | |
2225 | ||
2226 | /* Expand signed and unsigned bytes and halfwords as needed. */ | |
2227 | if (len < 4) | |
c906108c | 2228 | { |
eb2c22dc MK |
2229 | arg = value_cast (builtin_type_long, arg); |
2230 | len = 4; | |
c906108c | 2231 | } |
eb2c22dc MK |
2232 | else if (len > 4 && len < 8) |
2233 | { | |
2234 | arg = value_cast (builtin_type_long_long, arg); | |
2235 | len = 4; | |
2236 | } | |
2237 | ||
2238 | gdb_assert (len == 4 || len == 8); | |
2239 | memcpy (buf, VALUE_CONTENTS_ALL (arg), len); | |
2240 | } | |
2241 | ||
2242 | /* We always write the argument word on the stack. */ | |
2243 | sp -= len; | |
2244 | write_memory (sp, buf, len); | |
2245 | ||
2246 | /* If this argument occupies one of the first 6 words, write it | |
2247 | into the appropriate register too. */ | |
2248 | size -= len; | |
2249 | if (size < 24) | |
2250 | { | |
2251 | int regnum = SPARC_O0_REGNUM + (size / 4); | |
2252 | ||
2253 | regcache_cooked_write (regcache, regnum, buf); | |
2254 | if (len == 8 && size < 20) | |
2255 | regcache_cooked_write (regcache, regnum + 1, buf + 4); | |
c906108c | 2256 | } |
c906108c SS |
2257 | } |
2258 | ||
eb2c22dc MK |
2259 | /* Reserve space for the struct/union return value pointer. */ |
2260 | sp -= 4; | |
2261 | ||
2262 | /* Stack should be doubleword aligned at this point. */ | |
2263 | gdb_assert (sp % 8 == 0); | |
2264 | ||
2265 | /* Return the adjusted stack pointer. */ | |
2266 | return sp; | |
2267 | } | |
c906108c | 2268 | |
eb2c22dc MK |
2269 | /* The SPARC passes the arguments on the stack; arguments smaller |
2270 | than an int are promoted to an int. The first 6 words worth of | |
2271 | args are also passed in registers o0 - o5. */ | |
2272 | ||
2273 | CORE_ADDR | |
2274 | sparc32_push_arguments (int nargs, struct value **args, CORE_ADDR sp, | |
2275 | int struct_return, CORE_ADDR struct_addr) | |
2276 | { | |
2277 | sp = sparc32_do_push_arguments (current_regcache, nargs, args, sp); | |
2278 | ||
2279 | /* FIXME: kettenis/20030525: We don't let this function set the | |
2280 | struct/union return pointer just yet. */ | |
2281 | #if 0 | |
2282 | if (struct_return) | |
5af923b0 | 2283 | { |
eb2c22dc MK |
2284 | char buf[4]; |
2285 | ||
2286 | /* The space for the struct/union return value pointer has | |
2287 | already been reserved. */ | |
2288 | store_unsigned_integer (buf, 4, struct_addr); | |
2289 | write (sp, buf, 4); | |
5af923b0 | 2290 | } |
c906108c SS |
2291 | |
2292 | return sp; | |
eb2c22dc MK |
2293 | #else |
2294 | return sp + 4; | |
2295 | #endif | |
c906108c SS |
2296 | } |
2297 | ||
44b7b84e MK |
2298 | /* Extract from REGCACHE a function return value of type TYPE and copy |
2299 | that into VALBUF. | |
2300 | ||
2301 | Note that REGCACHE specifies the register values for the frame of | |
2302 | the calling function. This means that we need to fetch the value | |
2303 | form %o0 and %o1, which correspond to %i0 and %i1 in the frame of | |
2304 | the called function. */ | |
c906108c SS |
2305 | |
2306 | void | |
44b7b84e MK |
2307 | sparc32_extract_return_value (struct type *type, struct regcache *regcache, |
2308 | void *valbuf) | |
c906108c | 2309 | { |
44b7b84e MK |
2310 | int len = TYPE_LENGTH (type); |
2311 | char buf[8]; | |
c906108c SS |
2312 | |
2313 | if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU) | |
44b7b84e MK |
2314 | { |
2315 | if (len == 4 || len == 8) | |
2316 | { | |
2317 | regcache_cooked_read (regcache, SPARC_F0_REGNUM, buf); | |
2318 | regcache_cooked_read (regcache, SPARC_F1_REGNUM, buf + 4); | |
2319 | memcpy (valbuf, buf, len); | |
2320 | return; | |
2321 | } | |
2322 | else | |
2323 | internal_error (__FILE__, __LINE__, "\ | |
2324 | Cannot extract floating-point return value of %d bytes long.", len); | |
2325 | } | |
2326 | ||
2327 | if (len <= 4) | |
2328 | { | |
2329 | regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); | |
2330 | memcpy (valbuf, buf + 4 - len, len); | |
2331 | } | |
2332 | else if (len <= 8) | |
2333 | { | |
2334 | regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); | |
2335 | regcache_cooked_read (regcache, SPARC_O1_REGNUM, buf + 4); | |
2336 | memcpy (valbuf, buf + 8 - len, len); | |
2337 | } | |
c906108c | 2338 | else |
44b7b84e MK |
2339 | internal_error (__FILE__, __LINE__, |
2340 | "Cannot extract return value of %d bytes long.", len); | |
c906108c SS |
2341 | } |
2342 | ||
44b7b84e MK |
2343 | /* Write into REGBUF a function return value VALBUF of type TYPE. */ |
2344 | ||
2345 | void | |
2346 | sparc32_store_return_value (struct type *type, struct regcache *regcache, | |
2347 | const void *valbuf) | |
2348 | { | |
2349 | int len = TYPE_LENGTH (type); | |
2350 | char buf[8]; | |
2351 | ||
2352 | if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU) | |
2353 | { | |
2354 | const char *buf = valbuf; | |
2355 | ||
2356 | if (len == 4) | |
2357 | { | |
2358 | regcache_cooked_write (regcache, SPARC_F0_REGNUM, buf); | |
2359 | return; | |
2360 | } | |
2361 | else if (len == 8) | |
2362 | { | |
2363 | regcache_cooked_write (regcache, SPARC_F0_REGNUM, buf); | |
2364 | regcache_cooked_write (regcache, SPARC_F1_REGNUM, buf + 4); | |
2365 | return; | |
2366 | } | |
2367 | else | |
2368 | internal_error (__FILE__, __LINE__, "\ | |
2369 | Cannot extract floating-point return value of %d bytes long.", len); | |
2370 | } | |
2371 | ||
2372 | /* Add leading zeros to the value. */ | |
2373 | memset (buf, 0, sizeof buf); | |
2374 | ||
2375 | if (len <= 4) | |
2376 | { | |
2377 | memcpy (buf + 4 - len, valbuf, len); | |
2378 | regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); | |
2379 | } | |
2380 | else if (len <= 8) | |
2381 | { | |
2382 | memcpy (buf + 8 - len, valbuf, len); | |
2383 | regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); | |
2384 | regcache_cooked_write (regcache, SPARC_O1_REGNUM, buf); | |
2385 | } | |
2386 | else | |
2387 | internal_error (__FILE__, __LINE__, | |
2388 | "Cannot extract return value of %d bytes long.", len); | |
2389 | } | |
2390 | ||
2391 | /* Extract from REGCACHE the address in which a function should return | |
2392 | its structure value. */ | |
2393 | ||
2394 | CORE_ADDR | |
2395 | sparc_extract_struct_value_address (struct regcache *regcache) | |
2396 | { | |
2397 | ULONGEST addr; | |
2398 | ||
2399 | regcache_cooked_read_unsigned (regcache, SPARC_O0_REGNUM, &addr); | |
2400 | return addr; | |
2401 | } | |
c906108c | 2402 | |
44b7b84e | 2403 | /* FIXME: kettenis/2003/05/24: Still used for sparc64. */ |
c906108c | 2404 | |
a78f21af | 2405 | static void |
fba45db2 | 2406 | sparc_store_return_value (struct type *type, char *valbuf) |
c906108c SS |
2407 | { |
2408 | int regno; | |
d9d9c31f | 2409 | char buffer[MAX_REGISTER_SIZE]; |
c906108c SS |
2410 | |
2411 | if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU) | |
2412 | /* Floating-point values are returned in the register pair */ | |
2413 | /* formed by %f0 and %f1 (doubles are, anyway). */ | |
2414 | regno = FP0_REGNUM; | |
2415 | else | |
2416 | /* Other values are returned in register %o0. */ | |
2417 | regno = O0_REGNUM; | |
2418 | ||
2419 | /* Add leading zeros to the value. */ | |
c5aa993b | 2420 | if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (regno)) |
c906108c | 2421 | { |
5af923b0 | 2422 | memset (buffer, 0, REGISTER_RAW_SIZE (regno)); |
c5aa993b | 2423 | memcpy (buffer + REGISTER_RAW_SIZE (regno) - TYPE_LENGTH (type), valbuf, |
c906108c | 2424 | TYPE_LENGTH (type)); |
4caf0990 | 2425 | deprecated_write_register_gen (regno, buffer); |
c906108c SS |
2426 | } |
2427 | else | |
73937e03 AC |
2428 | deprecated_write_register_bytes (REGISTER_BYTE (regno), valbuf, |
2429 | TYPE_LENGTH (type)); | |
c906108c SS |
2430 | } |
2431 | ||
f81824a9 AC |
2432 | #if 0 |
2433 | // OBSOLETE extern void | |
2434 | // OBSOLETE sparclet_store_return_value (struct type *type, char *valbuf) | |
2435 | // OBSOLETE { | |
2436 | // OBSOLETE /* Other values are returned in register %o0. */ | |
2437 | // OBSOLETE deprecated_write_register_bytes (REGISTER_BYTE (O0_REGNUM), valbuf, | |
2438 | // OBSOLETE TYPE_LENGTH (type)); | |
2439 | // OBSOLETE } | |
2440 | #endif | |
5af923b0 MS |
2441 | |
2442 | ||
4eb8c7fc DM |
2443 | #ifndef CALL_DUMMY_CALL_OFFSET |
2444 | #define CALL_DUMMY_CALL_OFFSET \ | |
2445 | (gdbarch_tdep (current_gdbarch)->call_dummy_call_offset) | |
2446 | #endif /* CALL_DUMMY_CALL_OFFSET */ | |
2447 | ||
c906108c SS |
2448 | /* Insert the function address into a call dummy instruction sequence |
2449 | stored at DUMMY. | |
2450 | ||
2451 | For structs and unions, if the function was compiled with Sun cc, | |
2452 | it expects 'unimp' after the call. But gcc doesn't use that | |
b1e29e33 AC |
2453 | (twisted) convention. So leave a nop there for gcc |
2454 | (DEPRECATED_FIX_CALL_DUMMY can assume it is operating on a pristine | |
2455 | CALL_DUMMY, not one that has already been customized for a | |
2456 | different function). */ | |
c906108c SS |
2457 | |
2458 | void | |
fba45db2 KB |
2459 | sparc_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, |
2460 | struct type *value_type, int using_gcc) | |
c906108c SS |
2461 | { |
2462 | int i; | |
2463 | ||
2464 | /* Store the relative adddress of the target function into the | |
2465 | 'call' instruction. */ | |
2466 | store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET, 4, | |
2467 | (0x40000000 | |
2468 | | (((fun - (pc + CALL_DUMMY_CALL_OFFSET)) >> 2) | |
c5aa993b | 2469 | & 0x3fffffff))); |
c906108c | 2470 | |
9e36d949 PS |
2471 | /* If the called function returns an aggregate value, fill in the UNIMP |
2472 | instruction containing the size of the returned aggregate return value, | |
2473 | which follows the call instruction. | |
2474 | For details see the SPARC Architecture Manual Version 8, Appendix D.3. | |
2475 | ||
2476 | Adjust the call_dummy_breakpoint_offset for the bp_call_dummy breakpoint | |
2477 | to the proper address in the call dummy, so that `finish' after a stop | |
2478 | in a call dummy works. | |
04714b91 AC |
2479 | |
2480 | Tweeking current_gdbarch is not an optimal solution, but the call | |
2481 | to sparc_fix_call_dummy is immediately followed by a call to | |
2482 | call_function_by_hand, which is the only function where | |
2483 | dummy_breakpoint_offset is actually used, if it is non-zero. */ | |
9e36d949 PS |
2484 | if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT |
2485 | || TYPE_CODE (value_type) == TYPE_CODE_UNION) | |
2486 | { | |
2487 | store_unsigned_integer (dummy + CALL_DUMMY_CALL_OFFSET + 8, 4, | |
2488 | TYPE_LENGTH (value_type) & 0x1fff); | |
b1e29e33 | 2489 | set_gdbarch_deprecated_call_dummy_breakpoint_offset (current_gdbarch, 0x30); |
9e36d949 PS |
2490 | } |
2491 | else | |
b1e29e33 | 2492 | set_gdbarch_deprecated_call_dummy_breakpoint_offset (current_gdbarch, 0x2c); |
c906108c | 2493 | |
5af923b0 | 2494 | if (!(GDB_TARGET_IS_SPARC64)) |
c906108c | 2495 | { |
5af923b0 MS |
2496 | /* If this is not a simulator target, change the first four |
2497 | instructions of the call dummy to NOPs. Those instructions | |
2498 | include a 'save' instruction and are designed to work around | |
2499 | problems with register window flushing in the simulator. */ | |
2500 | ||
2501 | if (strcmp (target_shortname, "sim") != 0) | |
2502 | { | |
2503 | for (i = 0; i < 4; i++) | |
2504 | store_unsigned_integer (dummy + (i * 4), 4, 0x01000000); | |
2505 | } | |
c906108c | 2506 | } |
c906108c | 2507 | |
f81824a9 AC |
2508 | #if 0 |
2509 | // OBSOLETE /* If this is a bi-endian target, GDB has written the call dummy | |
2510 | // OBSOLETE in little-endian order. We must byte-swap it back to big-endian. */ | |
2511 | // OBSOLETE if (bi_endian) | |
2512 | // OBSOLETE { | |
2513 | // OBSOLETE for (i = 0; i < CALL_DUMMY_LENGTH; i += 4) | |
2514 | // OBSOLETE { | |
2515 | // OBSOLETE char tmp = dummy[i]; | |
2516 | // OBSOLETE dummy[i] = dummy[i + 3]; | |
2517 | // OBSOLETE dummy[i + 3] = tmp; | |
2518 | // OBSOLETE tmp = dummy[i + 1]; | |
2519 | // OBSOLETE dummy[i + 1] = dummy[i + 2]; | |
2520 | // OBSOLETE dummy[i + 2] = tmp; | |
2521 | // OBSOLETE } | |
2522 | // OBSOLETE } | |
2523 | #endif | |
c906108c SS |
2524 | } |
2525 | ||
2526 | ||
f81824a9 AC |
2527 | #if 0 |
2528 | // OBSOLETE /* Set target byte order based on machine type. */ | |
2529 | // OBSOLETE | |
2530 | // OBSOLETE static int | |
2531 | // OBSOLETE sparc_target_architecture_hook (const bfd_arch_info_type *ap) | |
2532 | // OBSOLETE { | |
2533 | // OBSOLETE int i, j; | |
2534 | // OBSOLETE | |
2535 | // OBSOLETE if (ap->mach == bfd_mach_sparc_sparclite_le) | |
2536 | // OBSOLETE { | |
2537 | // OBSOLETE target_byte_order = BFD_ENDIAN_LITTLE; | |
2538 | // OBSOLETE bi_endian = 1; | |
2539 | // OBSOLETE } | |
2540 | // OBSOLETE else | |
2541 | // OBSOLETE bi_endian = 0; | |
2542 | // OBSOLETE return 1; | |
2543 | // OBSOLETE } | |
2544 | #endif | |
c5aa993b | 2545 | |
5af923b0 MS |
2546 | /* |
2547 | * Module "constructor" function. | |
2548 | */ | |
2549 | ||
2550 | static struct gdbarch * sparc_gdbarch_init (struct gdbarch_info info, | |
2551 | struct gdbarch_list *arches); | |
ef3cf062 | 2552 | static void sparc_dump_tdep (struct gdbarch *, struct ui_file *); |
5af923b0 | 2553 | |
a78f21af AC |
2554 | extern initialize_file_ftype _initialize_sparc_tdep; /* -Wmissing-prototypes */ |
2555 | ||
c906108c | 2556 | void |
fba45db2 | 2557 | _initialize_sparc_tdep (void) |
c906108c | 2558 | { |
5af923b0 | 2559 | /* Hook us into the gdbarch mechanism. */ |
ef3cf062 | 2560 | gdbarch_register (bfd_arch_sparc, sparc_gdbarch_init, sparc_dump_tdep); |
5af923b0 | 2561 | |
d7a27068 | 2562 | deprecated_tm_print_insn = gdb_print_insn_sparc; |
810ecf9f | 2563 | deprecated_tm_print_insn_info.mach = TM_PRINT_INSN_MACH; /* Selects sparc/sparclite */ |
f81824a9 | 2564 | /* OBSOLETE target_architecture_hook = sparc_target_architecture_hook; */ |
c906108c SS |
2565 | } |
2566 | ||
5af923b0 MS |
2567 | /* Compensate for stack bias. Note that we currently don't handle |
2568 | mixed 32/64 bit code. */ | |
c906108c | 2569 | |
a78f21af | 2570 | static CORE_ADDR |
5af923b0 | 2571 | sparc64_read_sp (void) |
c906108c SS |
2572 | { |
2573 | CORE_ADDR sp = read_register (SP_REGNUM); | |
2574 | ||
2575 | if (sp & 1) | |
2576 | sp += 2047; | |
2577 | return sp; | |
2578 | } | |
2579 | ||
a78f21af | 2580 | static CORE_ADDR |
5af923b0 | 2581 | sparc64_read_fp (void) |
c906108c | 2582 | { |
0ba6dca9 | 2583 | CORE_ADDR fp = read_register (DEPRECATED_FP_REGNUM); |
c906108c SS |
2584 | |
2585 | if (fp & 1) | |
2586 | fp += 2047; | |
2587 | return fp; | |
2588 | } | |
2589 | ||
a78f21af | 2590 | static void |
fba45db2 | 2591 | sparc64_write_sp (CORE_ADDR val) |
c906108c SS |
2592 | { |
2593 | CORE_ADDR oldsp = read_register (SP_REGNUM); | |
2594 | if (oldsp & 1) | |
2595 | write_register (SP_REGNUM, val - 2047); | |
2596 | else | |
2597 | write_register (SP_REGNUM, val); | |
2598 | } | |
2599 | ||
5af923b0 MS |
2600 | /* The SPARC 64 ABI passes floating-point arguments in FP0 to FP31, |
2601 | and all other arguments in O0 to O5. They are also copied onto | |
2602 | the stack in the correct places. Apparently (empirically), | |
2603 | structs of less than 16 bytes are passed member-by-member in | |
2604 | separate registers, but I am unable to figure out the algorithm. | |
2605 | Some members go in floating point regs, but I don't know which. | |
2606 | ||
2607 | FIXME: Handle small structs (less than 16 bytes containing floats). | |
2608 | ||
2609 | The counting regimen for using both integer and FP registers | |
2610 | for argument passing is rather odd -- a single counter is used | |
2611 | for both; this means that if the arguments alternate between | |
2612 | int and float, we will waste every other register of both types. */ | |
c906108c | 2613 | |
a78f21af | 2614 | static CORE_ADDR |
ea7c478f | 2615 | sparc64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
fba45db2 | 2616 | int struct_return, CORE_ADDR struct_retaddr) |
c906108c | 2617 | { |
5af923b0 | 2618 | int i, j, register_counter = 0; |
c906108c | 2619 | CORE_ADDR tempsp; |
5af923b0 MS |
2620 | struct type *sparc_intreg_type = |
2621 | TYPE_LENGTH (builtin_type_long) == SPARC_INTREG_SIZE ? | |
2622 | builtin_type_long : builtin_type_long_long; | |
c5aa993b | 2623 | |
5af923b0 | 2624 | sp = (sp & ~(((unsigned long) SPARC_INTREG_SIZE) - 1UL)); |
c906108c SS |
2625 | |
2626 | /* Figure out how much space we'll need. */ | |
5af923b0 | 2627 | for (i = nargs - 1; i >= 0; i--) |
c906108c | 2628 | { |
5af923b0 | 2629 | int len = TYPE_LENGTH (check_typedef (VALUE_TYPE (args[i]))); |
ea7c478f | 2630 | struct value *copyarg = args[i]; |
c906108c SS |
2631 | int copylen = len; |
2632 | ||
5af923b0 | 2633 | if (copylen < SPARC_INTREG_SIZE) |
c906108c | 2634 | { |
5af923b0 MS |
2635 | copyarg = value_cast (sparc_intreg_type, copyarg); |
2636 | copylen = SPARC_INTREG_SIZE; | |
c5aa993b | 2637 | } |
c906108c SS |
2638 | sp -= copylen; |
2639 | } | |
2640 | ||
2641 | /* Round down. */ | |
2642 | sp = sp & ~7; | |
2643 | tempsp = sp; | |
2644 | ||
5af923b0 MS |
2645 | /* if STRUCT_RETURN, then first argument is the struct return location. */ |
2646 | if (struct_return) | |
2647 | write_register (O0_REGNUM + register_counter++, struct_retaddr); | |
2648 | ||
2649 | /* Now write the arguments onto the stack, while writing FP | |
2650 | arguments into the FP registers, and other arguments into the | |
2651 | first six 'O' registers. */ | |
2652 | ||
2653 | for (i = 0; i < nargs; i++) | |
c906108c | 2654 | { |
5af923b0 | 2655 | int len = TYPE_LENGTH (check_typedef (VALUE_TYPE (args[i]))); |
ea7c478f | 2656 | struct value *copyarg = args[i]; |
5af923b0 | 2657 | enum type_code typecode = TYPE_CODE (VALUE_TYPE (args[i])); |
c906108c SS |
2658 | int copylen = len; |
2659 | ||
5af923b0 MS |
2660 | if (typecode == TYPE_CODE_INT || |
2661 | typecode == TYPE_CODE_BOOL || | |
2662 | typecode == TYPE_CODE_CHAR || | |
2663 | typecode == TYPE_CODE_RANGE || | |
2664 | typecode == TYPE_CODE_ENUM) | |
2665 | if (len < SPARC_INTREG_SIZE) | |
2666 | { | |
2667 | /* Small ints will all take up the size of one intreg on | |
2668 | the stack. */ | |
2669 | copyarg = value_cast (sparc_intreg_type, copyarg); | |
2670 | copylen = SPARC_INTREG_SIZE; | |
2671 | } | |
2672 | ||
c906108c SS |
2673 | write_memory (tempsp, VALUE_CONTENTS (copyarg), copylen); |
2674 | tempsp += copylen; | |
5af923b0 MS |
2675 | |
2676 | /* Corner case: Structs consisting of a single float member are floats. | |
2677 | * FIXME! I don't know about structs containing multiple floats! | |
2678 | * Structs containing mixed floats and ints are even more weird. | |
2679 | */ | |
2680 | ||
2681 | ||
2682 | ||
2683 | /* Separate float args from all other args. */ | |
2684 | if (typecode == TYPE_CODE_FLT && SPARC_HAS_FPU) | |
c906108c | 2685 | { |
5af923b0 MS |
2686 | if (register_counter < 16) |
2687 | { | |
2688 | /* This arg gets copied into a FP register. */ | |
2689 | int fpreg; | |
2690 | ||
2691 | switch (len) { | |
2692 | case 4: /* Single-precision (float) */ | |
2693 | fpreg = FP0_REGNUM + 2 * register_counter + 1; | |
2694 | register_counter += 1; | |
2695 | break; | |
2696 | case 8: /* Double-precision (double) */ | |
2697 | fpreg = FP0_REGNUM + 2 * register_counter; | |
2698 | register_counter += 1; | |
2699 | break; | |
2700 | case 16: /* Quad-precision (long double) */ | |
2701 | fpreg = FP0_REGNUM + 2 * register_counter; | |
2702 | register_counter += 2; | |
2703 | break; | |
93d56215 AC |
2704 | default: |
2705 | internal_error (__FILE__, __LINE__, "bad switch"); | |
5af923b0 | 2706 | } |
73937e03 AC |
2707 | deprecated_write_register_bytes (REGISTER_BYTE (fpreg), |
2708 | VALUE_CONTENTS (args[i]), | |
2709 | len); | |
5af923b0 | 2710 | } |
c906108c | 2711 | } |
5af923b0 MS |
2712 | else /* all other args go into the first six 'o' registers */ |
2713 | { | |
2714 | for (j = 0; | |
2715 | j < len && register_counter < 6; | |
2716 | j += SPARC_INTREG_SIZE) | |
2717 | { | |
2718 | int oreg = O0_REGNUM + register_counter; | |
2719 | ||
4caf0990 | 2720 | deprecated_write_register_gen (oreg, VALUE_CONTENTS (copyarg) + j); |
5af923b0 MS |
2721 | register_counter += 1; |
2722 | } | |
2723 | } | |
c906108c SS |
2724 | } |
2725 | return sp; | |
2726 | } | |
2727 | ||
2728 | /* Values <= 32 bytes are returned in o0-o3 (floating-point values are | |
2729 | returned in f0-f3). */ | |
5af923b0 | 2730 | |
a78f21af | 2731 | static void |
fba45db2 KB |
2732 | sp64_extract_return_value (struct type *type, char *regbuf, char *valbuf, |
2733 | int bitoffset) | |
c906108c SS |
2734 | { |
2735 | int typelen = TYPE_LENGTH (type); | |
2736 | int regsize = REGISTER_RAW_SIZE (O0_REGNUM); | |
2737 | ||
2738 | if (TYPE_CODE (type) == TYPE_CODE_FLT && SPARC_HAS_FPU) | |
2739 | { | |
c5aa993b | 2740 | memcpy (valbuf, ®buf[REGISTER_BYTE (FP0_REGNUM)], typelen); |
c906108c SS |
2741 | return; |
2742 | } | |
2743 | ||
2744 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
2745 | || (TYPE_LENGTH (type) > 32)) | |
2746 | { | |
2747 | memcpy (valbuf, | |
c5aa993b | 2748 | ®buf[O0_REGNUM * regsize + |
c906108c SS |
2749 | (typelen >= regsize ? 0 : regsize - typelen)], |
2750 | typelen); | |
2751 | return; | |
2752 | } | |
2753 | else | |
2754 | { | |
2755 | char *o0 = ®buf[O0_REGNUM * regsize]; | |
2756 | char *f0 = ®buf[FP0_REGNUM * regsize]; | |
2757 | int x; | |
2758 | ||
2759 | for (x = 0; x < TYPE_NFIELDS (type); x++) | |
2760 | { | |
c5aa993b | 2761 | struct field *f = &TYPE_FIELDS (type)[x]; |
c906108c SS |
2762 | /* FIXME: We may need to handle static fields here. */ |
2763 | int whichreg = (f->loc.bitpos + bitoffset) / 32; | |
2764 | int remainder = ((f->loc.bitpos + bitoffset) % 32) / 8; | |
2765 | int where = (f->loc.bitpos + bitoffset) / 8; | |
2766 | int size = TYPE_LENGTH (f->type); | |
2767 | int typecode = TYPE_CODE (f->type); | |
2768 | ||
2769 | if (typecode == TYPE_CODE_STRUCT) | |
2770 | { | |
5af923b0 MS |
2771 | sp64_extract_return_value (f->type, |
2772 | regbuf, | |
2773 | valbuf, | |
2774 | bitoffset + f->loc.bitpos); | |
c906108c | 2775 | } |
5af923b0 | 2776 | else if (typecode == TYPE_CODE_FLT && SPARC_HAS_FPU) |
c906108c SS |
2777 | { |
2778 | memcpy (valbuf + where, &f0[whichreg * 4] + remainder, size); | |
2779 | } | |
2780 | else | |
2781 | { | |
2782 | memcpy (valbuf + where, &o0[whichreg * 4] + remainder, size); | |
2783 | } | |
2784 | } | |
2785 | } | |
2786 | } | |
2acceee2 | 2787 | |
a78f21af | 2788 | static void |
5af923b0 MS |
2789 | sparc64_extract_return_value (struct type *type, char *regbuf, char *valbuf) |
2790 | { | |
2791 | sp64_extract_return_value (type, regbuf, valbuf, 0); | |
2792 | } | |
2793 | ||
f81824a9 AC |
2794 | #if 0 |
2795 | // OBSOLETE extern void | |
2796 | // OBSOLETE sparclet_extract_return_value (struct type *type, | |
2797 | // OBSOLETE char *regbuf, | |
2798 | // OBSOLETE char *valbuf) | |
2799 | // OBSOLETE { | |
2800 | // OBSOLETE regbuf += REGISTER_RAW_SIZE (O0_REGNUM) * 8; | |
2801 | // OBSOLETE if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (O0_REGNUM)) | |
2802 | // OBSOLETE regbuf += REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH (type); | |
2803 | // OBSOLETE | |
2804 | // OBSOLETE memcpy ((void *) valbuf, regbuf, TYPE_LENGTH (type)); | |
2805 | // OBSOLETE } | |
2806 | #endif | |
5af923b0 MS |
2807 | |
2808 | extern CORE_ADDR | |
2809 | sparc32_stack_align (CORE_ADDR addr) | |
2810 | { | |
2811 | return ((addr + 7) & -8); | |
2812 | } | |
2813 | ||
a78f21af | 2814 | static CORE_ADDR |
5af923b0 MS |
2815 | sparc64_stack_align (CORE_ADDR addr) |
2816 | { | |
2817 | return ((addr + 15) & -16); | |
2818 | } | |
2819 | ||
2820 | extern void | |
2821 | sparc_print_extra_frame_info (struct frame_info *fi) | |
2822 | { | |
da50a4b7 | 2823 | if (fi && get_frame_extra_info (fi) && get_frame_extra_info (fi)->flat) |
5af923b0 | 2824 | printf_filtered (" flat, pc saved at 0x%s, fp saved at 0x%s\n", |
da50a4b7 AC |
2825 | paddr_nz (get_frame_extra_info (fi)->pc_addr), |
2826 | paddr_nz (get_frame_extra_info (fi)->fp_addr)); | |
5af923b0 MS |
2827 | } |
2828 | ||
2829 | /* MULTI_ARCH support */ | |
2830 | ||
e23457df AC |
2831 | const char * |
2832 | legacy_register_name (int i) | |
2833 | { | |
2834 | #ifdef REGISTER_NAMES | |
2835 | static char *names[] = REGISTER_NAMES; | |
2836 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) | |
2837 | return NULL; | |
2838 | else | |
2839 | return names[i]; | |
2840 | #else | |
2841 | internal_error (__FILE__, __LINE__, | |
2842 | "legacy_register_name: called."); | |
2843 | return NULL; | |
2844 | #endif | |
2845 | } | |
2846 | ||
fa88f677 | 2847 | static const char * |
5af923b0 MS |
2848 | sparc32_register_name (int regno) |
2849 | { | |
2850 | static char *register_names[] = | |
2851 | { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", | |
2852 | "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
2853 | "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
2854 | "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
2855 | ||
2856 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
2857 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
2858 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
2859 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
2860 | ||
2861 | "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" | |
2862 | }; | |
2863 | ||
2864 | if (regno < 0 || | |
2865 | regno >= (sizeof (register_names) / sizeof (register_names[0]))) | |
2866 | return NULL; | |
2867 | else | |
2868 | return register_names[regno]; | |
2869 | } | |
2870 | ||
fa88f677 | 2871 | static const char * |
5af923b0 MS |
2872 | sparc64_register_name (int regno) |
2873 | { | |
2874 | static char *register_names[] = | |
2875 | { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", | |
2876 | "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
2877 | "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
2878 | "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
2879 | ||
2880 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
2881 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
2882 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
2883 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
2884 | "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", | |
2885 | "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", | |
2886 | ||
2887 | "pc", "npc", "ccr", "fsr", "fprs", "y", "asi", "ver", | |
2888 | "tick", "pil", "pstate", "tstate", "tba", "tl", "tt", "tpc", | |
2889 | "tnpc", "wstate", "cwp", "cansave", "canrestore", "cleanwin", "otherwin", | |
2890 | "asr16", "asr17", "asr18", "asr19", "asr20", "asr21", "asr22", "asr23", | |
2891 | "asr24", "asr25", "asr26", "asr27", "asr28", "asr29", "asr30", "asr31", | |
2892 | /* These are here at the end to simplify removing them if we have to. */ | |
2893 | "icc", "xcc", "fcc0", "fcc1", "fcc2", "fcc3" | |
2894 | }; | |
2895 | ||
2896 | if (regno < 0 || | |
2897 | regno >= (sizeof (register_names) / sizeof (register_names[0]))) | |
2898 | return NULL; | |
2899 | else | |
2900 | return register_names[regno]; | |
2901 | } | |
2902 | ||
5af923b0 | 2903 | #if 0 |
f81824a9 AC |
2904 | // OBSOLETE static const char * |
2905 | // OBSOLETE sparclite_register_name (int regno) | |
2906 | // OBSOLETE { | |
2907 | // OBSOLETE static char *register_names[] = | |
2908 | // OBSOLETE { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", | |
2909 | // OBSOLETE "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
2910 | // OBSOLETE "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
2911 | // OBSOLETE "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
2912 | // OBSOLETE | |
2913 | // OBSOLETE "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
2914 | // OBSOLETE "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
2915 | // OBSOLETE "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
2916 | // OBSOLETE "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
2917 | // OBSOLETE | |
2918 | // OBSOLETE "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr", | |
2919 | // OBSOLETE "dia1", "dia2", "dda1", "dda2", "ddv1", "ddv2", "dcr", "dsr" | |
2920 | // OBSOLETE }; | |
2921 | // OBSOLETE | |
2922 | // OBSOLETE if (regno < 0 || | |
2923 | // OBSOLETE regno >= (sizeof (register_names) / sizeof (register_names[0]))) | |
2924 | // OBSOLETE return NULL; | |
2925 | // OBSOLETE else | |
2926 | // OBSOLETE return register_names[regno]; | |
2927 | // OBSOLETE } | |
2928 | #endif | |
5af923b0 | 2929 | |
f81824a9 AC |
2930 | #if 0 |
2931 | // OBSOLETE static const char * | |
2932 | // OBSOLETE sparclet_register_name (int regno) | |
2933 | // OBSOLETE { | |
2934 | // OBSOLETE static char *register_names[] = | |
2935 | // OBSOLETE { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", | |
2936 | // OBSOLETE "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", | |
2937 | // OBSOLETE "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", | |
2938 | // OBSOLETE "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", | |
2939 | // OBSOLETE | |
2940 | // OBSOLETE "", "", "", "", "", "", "", "", /* no floating point registers */ | |
2941 | // OBSOLETE "", "", "", "", "", "", "", "", | |
2942 | // OBSOLETE "", "", "", "", "", "", "", "", | |
2943 | // OBSOLETE "", "", "", "", "", "", "", "", | |
2944 | // OBSOLETE | |
2945 | // OBSOLETE "y", "psr", "wim", "tbr", "pc", "npc", "", "", /* no FPSR or CPSR */ | |
2946 | // OBSOLETE "ccsr", "ccpr", "cccrcr", "ccor", "ccobr", "ccibr", "ccir", "", | |
2947 | // OBSOLETE | |
2948 | // OBSOLETE /* ASR15 ASR19 (don't display them) */ | |
2949 | // OBSOLETE "asr1", "", "asr17", "asr18", "", "asr20", "asr21", "asr22" | |
2950 | // OBSOLETE /* None of the rest get displayed */ | |
2951 | // OBSOLETE #if 0 | |
2952 | // OBSOLETE "awr0", "awr1", "awr2", "awr3", "awr4", "awr5", "awr6", "awr7", | |
2953 | // OBSOLETE "awr8", "awr9", "awr10", "awr11", "awr12", "awr13", "awr14", "awr15", | |
2954 | // OBSOLETE "awr16", "awr17", "awr18", "awr19", "awr20", "awr21", "awr22", "awr23", | |
2955 | // OBSOLETE "awr24", "awr25", "awr26", "awr27", "awr28", "awr29", "awr30", "awr31", | |
2956 | // OBSOLETE "apsr" | |
2957 | // OBSOLETE #endif /* 0 */ | |
2958 | // OBSOLETE }; | |
2959 | // OBSOLETE | |
2960 | // OBSOLETE if (regno < 0 || | |
2961 | // OBSOLETE regno >= (sizeof (register_names) / sizeof (register_names[0]))) | |
2962 | // OBSOLETE return NULL; | |
2963 | // OBSOLETE else | |
2964 | // OBSOLETE return register_names[regno]; | |
2965 | // OBSOLETE } | |
2966 | #endif | |
5af923b0 | 2967 | |
a78f21af | 2968 | static CORE_ADDR |
5af923b0 MS |
2969 | sparc_push_return_address (CORE_ADDR pc_unused, CORE_ADDR sp) |
2970 | { | |
2971 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) | |
2972 | { | |
2973 | /* The return PC of the dummy_frame is the former 'current' PC | |
2974 | (where we were before we made the target function call). | |
2975 | This is saved in %i7 by push_dummy_frame. | |
2976 | ||
2977 | We will save the 'call dummy location' (ie. the address | |
2978 | to which the target function will return) in %o7. | |
2979 | This address will actually be the program's entry point. | |
2980 | There will be a special call_dummy breakpoint there. */ | |
2981 | ||
2982 | write_register (O7_REGNUM, | |
2983 | CALL_DUMMY_ADDRESS () - 8); | |
2984 | } | |
2985 | ||
2986 | return sp; | |
2987 | } | |
2988 | ||
2989 | /* Should call_function allocate stack space for a struct return? */ | |
2990 | ||
2991 | static int | |
2992 | sparc64_use_struct_convention (int gcc_p, struct type *type) | |
2993 | { | |
2994 | return (TYPE_LENGTH (type) > 32); | |
2995 | } | |
2996 | ||
2997 | /* Store the address of the place in which to copy the structure the | |
2998 | subroutine will return. This is called from call_function_by_hand. | |
2999 | The ultimate mystery is, tho, what is the value "16"? | |
3000 | ||
3001 | MVS: That's the offset from where the sp is now, to where the | |
3002 | subroutine is gonna expect to find the struct return address. */ | |
3003 | ||
3004 | static void | |
3005 | sparc32_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
3006 | { | |
3007 | char *val; | |
3008 | CORE_ADDR o7; | |
3009 | ||
3010 | val = alloca (SPARC_INTREG_SIZE); | |
3011 | store_unsigned_integer (val, SPARC_INTREG_SIZE, addr); | |
3012 | write_memory (sp + (16 * SPARC_INTREG_SIZE), val, SPARC_INTREG_SIZE); | |
3013 | ||
3014 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) | |
3015 | { | |
3016 | /* Now adjust the value of the link register, which was previously | |
3017 | stored by push_return_address. Functions that return structs are | |
3018 | peculiar in that they return to link register + 12, rather than | |
3019 | link register + 8. */ | |
3020 | ||
3021 | o7 = read_register (O7_REGNUM); | |
3022 | write_register (O7_REGNUM, o7 - 4); | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | static void | |
3027 | sparc64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) | |
3028 | { | |
3029 | /* FIXME: V9 uses %o0 for this. */ | |
3030 | /* FIXME MVS: Only for small enough structs!!! */ | |
2acceee2 | 3031 | |
5af923b0 MS |
3032 | target_write_memory (sp + (16 * SPARC_INTREG_SIZE), |
3033 | (char *) &addr, SPARC_INTREG_SIZE); | |
3034 | #if 0 | |
3035 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) | |
3036 | { | |
3037 | /* Now adjust the value of the link register, which was previously | |
3038 | stored by push_return_address. Functions that return structs are | |
3039 | peculiar in that they return to link register + 12, rather than | |
3040 | link register + 8. */ | |
3041 | ||
3042 | write_register (O7_REGNUM, read_register (O7_REGNUM) - 4); | |
3043 | } | |
c906108c | 3044 | #endif |
5af923b0 MS |
3045 | } |
3046 | ||
3047 | /* Default target data type for register REGNO. */ | |
3048 | ||
3049 | static struct type * | |
3050 | sparc32_register_virtual_type (int regno) | |
3051 | { | |
3052 | if (regno == PC_REGNUM || | |
0ba6dca9 | 3053 | regno == DEPRECATED_FP_REGNUM || |
5af923b0 MS |
3054 | regno == SP_REGNUM) |
3055 | return builtin_type_unsigned_int; | |
3056 | if (regno < 32) | |
3057 | return builtin_type_int; | |
3058 | if (regno < 64) | |
3059 | return builtin_type_float; | |
3060 | return builtin_type_int; | |
3061 | } | |
3062 | ||
3063 | static struct type * | |
3064 | sparc64_register_virtual_type (int regno) | |
3065 | { | |
3066 | if (regno == PC_REGNUM || | |
0ba6dca9 | 3067 | regno == DEPRECATED_FP_REGNUM || |
5af923b0 MS |
3068 | regno == SP_REGNUM) |
3069 | return builtin_type_unsigned_long_long; | |
3070 | if (regno < 32) | |
3071 | return builtin_type_long_long; | |
3072 | if (regno < 64) | |
3073 | return builtin_type_float; | |
3074 | if (regno < 80) | |
3075 | return builtin_type_double; | |
3076 | return builtin_type_long_long; | |
3077 | } | |
3078 | ||
3079 | /* Number of bytes of storage in the actual machine representation for | |
3080 | register REGNO. */ | |
3081 | ||
3082 | static int | |
3083 | sparc32_register_size (int regno) | |
3084 | { | |
3085 | return 4; | |
3086 | } | |
3087 | ||
3088 | static int | |
3089 | sparc64_register_size (int regno) | |
3090 | { | |
3091 | return (regno < 32 ? 8 : regno < 64 ? 4 : 8); | |
3092 | } | |
3093 | ||
3094 | /* Index within the `registers' buffer of the first byte of the space | |
3095 | for register REGNO. */ | |
3096 | ||
3097 | static int | |
3098 | sparc32_register_byte (int regno) | |
3099 | { | |
3100 | return (regno * 4); | |
3101 | } | |
3102 | ||
3103 | static int | |
3104 | sparc64_register_byte (int regno) | |
3105 | { | |
3106 | if (regno < 32) | |
3107 | return regno * 8; | |
3108 | else if (regno < 64) | |
3109 | return 32 * 8 + (regno - 32) * 4; | |
3110 | else if (regno < 80) | |
3111 | return 32 * 8 + 32 * 4 + (regno - 64) * 8; | |
3112 | else | |
3113 | return 64 * 8 + (regno - 80) * 8; | |
3114 | } | |
3115 | ||
5af923b0 MS |
3116 | /* Immediately after a function call, return the saved pc. |
3117 | Can't go through the frames for this because on some machines | |
3118 | the new frame is not set up until the new function executes | |
3119 | some instructions. */ | |
3120 | ||
3121 | static CORE_ADDR | |
3122 | sparc_saved_pc_after_call (struct frame_info *fi) | |
3123 | { | |
3124 | return sparc_pc_adjust (read_register (RP_REGNUM)); | |
3125 | } | |
3126 | ||
5af923b0 MS |
3127 | /* Init saved regs: nothing to do, just a place-holder function. */ |
3128 | ||
3129 | static void | |
3130 | sparc_frame_init_saved_regs (struct frame_info *fi_ignored) | |
3131 | { /* no-op */ | |
3132 | } | |
3133 | ||
5af923b0 MS |
3134 | /* gdbarch fix call dummy: |
3135 | All this function does is rearrange the arguments before calling | |
3136 | sparc_fix_call_dummy (which does the real work). */ | |
3137 | ||
3138 | static void | |
3139 | sparc_gdbarch_fix_call_dummy (char *dummy, | |
3140 | CORE_ADDR pc, | |
3141 | CORE_ADDR fun, | |
3142 | int nargs, | |
3143 | struct value **args, | |
3144 | struct type *type, | |
3145 | int gcc_p) | |
3146 | { | |
3147 | if (CALL_DUMMY_LOCATION == ON_STACK) | |
3148 | sparc_fix_call_dummy (dummy, pc, fun, type, gcc_p); | |
3149 | } | |
3150 | ||
5af923b0 MS |
3151 | /* CALL_DUMMY_ADDRESS: fetch the breakpoint address for a call dummy. */ |
3152 | ||
3153 | static CORE_ADDR | |
3154 | sparc_call_dummy_address (void) | |
3155 | { | |
b1e29e33 | 3156 | return (DEPRECATED_CALL_DUMMY_START_OFFSET) + DEPRECATED_CALL_DUMMY_BREAKPOINT_OFFSET; |
5af923b0 MS |
3157 | } |
3158 | ||
3159 | /* Supply the Y register number to those that need it. */ | |
3160 | ||
9f9970a3 | 3161 | int |
5af923b0 MS |
3162 | sparc_y_regnum (void) |
3163 | { | |
3164 | return gdbarch_tdep (current_gdbarch)->y_regnum; | |
3165 | } | |
3166 | ||
3167 | int | |
3168 | sparc_reg_struct_has_addr (int gcc_p, struct type *type) | |
3169 | { | |
3170 | if (GDB_TARGET_IS_SPARC64) | |
3171 | return (TYPE_LENGTH (type) > 32); | |
3172 | else | |
3173 | return (gcc_p != 1); | |
3174 | } | |
3175 | ||
606e3b82 | 3176 | int |
5af923b0 MS |
3177 | sparc_intreg_size (void) |
3178 | { | |
3179 | return SPARC_INTREG_SIZE; | |
3180 | } | |
3181 | ||
3182 | static int | |
3183 | sparc_return_value_on_stack (struct type *type) | |
3184 | { | |
3185 | if (TYPE_CODE (type) == TYPE_CODE_FLT && | |
3186 | TYPE_LENGTH (type) > 8) | |
3187 | return 1; | |
3188 | else | |
3189 | return 0; | |
3190 | } | |
3191 | ||
143985b7 | 3192 | /* Get the ith function argument for the current function. */ |
a78f21af AC |
3193 | static CORE_ADDR |
3194 | sparc_fetch_pointer_argument (struct frame_info *frame, int argi, | |
3195 | struct type *type) | |
143985b7 AF |
3196 | { |
3197 | CORE_ADDR addr; | |
3198 | frame_read_register (frame, O0_REGNUM + argi, &addr); | |
3199 | return addr; | |
3200 | } | |
3201 | ||
5af923b0 MS |
3202 | /* |
3203 | * Gdbarch "constructor" function. | |
3204 | */ | |
3205 | ||
3206 | #define SPARC32_CALL_DUMMY_ON_STACK | |
3207 | ||
3208 | #define SPARC_SP_REGNUM 14 | |
3209 | #define SPARC_FP_REGNUM 30 | |
3210 | #define SPARC_FP0_REGNUM 32 | |
3211 | #define SPARC32_NPC_REGNUM 69 | |
3212 | #define SPARC32_PC_REGNUM 68 | |
3213 | #define SPARC32_Y_REGNUM 64 | |
3214 | #define SPARC64_PC_REGNUM 80 | |
3215 | #define SPARC64_NPC_REGNUM 81 | |
3216 | #define SPARC64_Y_REGNUM 85 | |
3217 | ||
3218 | static struct gdbarch * | |
3219 | sparc_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
3220 | { | |
3221 | struct gdbarch *gdbarch; | |
3222 | struct gdbarch_tdep *tdep; | |
3223 | ||
3224 | static LONGEST call_dummy_32[] = | |
3225 | { 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003, | |
3226 | 0xda03a058, 0xd803a054, 0xd603a050, 0xd403a04c, | |
3227 | 0xd203a048, 0x40000000, 0xd003a044, 0x01000000, | |
3228 | 0x91d02001, 0x01000000 | |
3229 | }; | |
3230 | static LONGEST call_dummy_64[] = | |
3231 | { 0x9de3bec0fd3fa7f7LL, 0xf93fa7eff53fa7e7LL, | |
3232 | 0xf13fa7dfed3fa7d7LL, 0xe93fa7cfe53fa7c7LL, | |
3233 | 0xe13fa7bfdd3fa7b7LL, 0xd93fa7afd53fa7a7LL, | |
3234 | 0xd13fa79fcd3fa797LL, 0xc93fa78fc53fa787LL, | |
3235 | 0xc13fa77fcc3fa777LL, 0xc83fa76fc43fa767LL, | |
3236 | 0xc03fa75ffc3fa757LL, 0xf83fa74ff43fa747LL, | |
3237 | 0xf03fa73f01000000LL, 0x0100000001000000LL, | |
3238 | 0x0100000091580000LL, 0xd027a72b93500000LL, | |
3239 | 0xd027a72791480000LL, 0xd027a72391400000LL, | |
3240 | 0xd027a71fda5ba8a7LL, 0xd85ba89fd65ba897LL, | |
3241 | 0xd45ba88fd25ba887LL, 0x9fc02000d05ba87fLL, | |
3242 | 0x0100000091d02001LL, 0x0100000001000000LL | |
3243 | }; | |
3244 | static LONGEST call_dummy_nil[] = {0}; | |
3245 | ||
ef3cf062 JT |
3246 | /* Try to determine the OS ABI of the object we are loading. */ |
3247 | ||
4be87837 DJ |
3248 | if (info.abfd != NULL |
3249 | && info.osabi == GDB_OSABI_UNKNOWN) | |
ef3cf062 | 3250 | { |
4be87837 DJ |
3251 | /* If it's an ELF file, assume it's Solaris. */ |
3252 | if (bfd_get_flavour (info.abfd) == bfd_target_elf_flavour) | |
3253 | info.osabi = GDB_OSABI_SOLARIS; | |
ef3cf062 JT |
3254 | } |
3255 | ||
5af923b0 | 3256 | /* First see if there is already a gdbarch that can satisfy the request. */ |
4be87837 DJ |
3257 | arches = gdbarch_list_lookup_by_info (arches, &info); |
3258 | if (arches != NULL) | |
3259 | return arches->gdbarch; | |
5af923b0 MS |
3260 | |
3261 | /* None found: is the request for a sparc architecture? */ | |
aca21d9a | 3262 | if (info.bfd_arch_info->arch != bfd_arch_sparc) |
5af923b0 MS |
3263 | return NULL; /* No; then it's not for us. */ |
3264 | ||
3265 | /* Yes: create a new gdbarch for the specified machine type. */ | |
3266 | tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep)); | |
3267 | gdbarch = gdbarch_alloc (&info, tdep); | |
3268 | ||
3269 | /* First set settings that are common for all sparc architectures. */ | |
3270 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); | |
aaab4dba | 3271 | set_gdbarch_breakpoint_from_pc (gdbarch, sparc_breakpoint_from_pc); |
5af923b0 MS |
3272 | set_gdbarch_decr_pc_after_break (gdbarch, 0); |
3273 | set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
44b7b84e MK |
3274 | set_gdbarch_extract_struct_value_address (gdbarch, |
3275 | sparc_extract_struct_value_address); | |
b1e29e33 | 3276 | set_gdbarch_deprecated_fix_call_dummy (gdbarch, sparc_gdbarch_fix_call_dummy); |
5af923b0 | 3277 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
0ba6dca9 | 3278 | set_gdbarch_deprecated_fp_regnum (gdbarch, SPARC_FP_REGNUM); |
5af923b0 | 3279 | set_gdbarch_fp0_regnum (gdbarch, SPARC_FP0_REGNUM); |
618ce49f | 3280 | set_gdbarch_deprecated_frame_chain (gdbarch, sparc_frame_chain); |
f30ee0bc | 3281 | set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sparc_frame_init_saved_regs); |
8bedc050 | 3282 | set_gdbarch_deprecated_frame_saved_pc (gdbarch, sparc_frame_saved_pc); |
5af923b0 MS |
3283 | set_gdbarch_frameless_function_invocation (gdbarch, |
3284 | frameless_look_for_prologue); | |
129c1cd6 | 3285 | set_gdbarch_deprecated_get_saved_register (gdbarch, sparc_get_saved_register); |
e9582e71 | 3286 | set_gdbarch_deprecated_init_extra_frame_info (gdbarch, sparc_init_extra_frame_info); |
5af923b0 MS |
3287 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
3288 | set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
3289 | set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT); | |
3290 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
a0ed5532 AC |
3291 | set_gdbarch_deprecated_max_register_raw_size (gdbarch, 8); |
3292 | set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 8); | |
749b82f6 | 3293 | set_gdbarch_deprecated_pop_frame (gdbarch, sparc_pop_frame); |
28f617b3 | 3294 | set_gdbarch_deprecated_push_return_address (gdbarch, sparc_push_return_address); |
f3824013 | 3295 | set_gdbarch_deprecated_push_dummy_frame (gdbarch, sparc_push_dummy_frame); |
5af923b0 MS |
3296 | set_gdbarch_reg_struct_has_addr (gdbarch, sparc_reg_struct_has_addr); |
3297 | set_gdbarch_return_value_on_stack (gdbarch, sparc_return_value_on_stack); | |
6913c89a | 3298 | set_gdbarch_deprecated_saved_pc_after_call (gdbarch, sparc_saved_pc_after_call); |
9319a2fe | 3299 | set_gdbarch_prologue_frameless_p (gdbarch, sparc_prologue_frameless_p); |
5af923b0 | 3300 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
f510d44e | 3301 | set_gdbarch_skip_prologue (gdbarch, sparc_skip_prologue); |
5af923b0 | 3302 | set_gdbarch_sp_regnum (gdbarch, SPARC_SP_REGNUM); |
07555a72 | 3303 | set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0); |
5af923b0 MS |
3304 | set_gdbarch_write_pc (gdbarch, generic_target_write_pc); |
3305 | ||
143985b7 AF |
3306 | /* Helper for function argument information. */ |
3307 | set_gdbarch_fetch_pointer_argument (gdbarch, sparc_fetch_pointer_argument); | |
3308 | ||
5af923b0 MS |
3309 | /* |
3310 | * Settings that depend only on 32/64 bit word size | |
3311 | */ | |
3312 | ||
3313 | switch (info.bfd_arch_info->mach) | |
3314 | { | |
3315 | case bfd_mach_sparc: | |
f81824a9 AC |
3316 | #if 0 |
3317 | // OBSOLETE case bfd_mach_sparc_sparclet: | |
3318 | // OBSOLETE case bfd_mach_sparc_sparclite: | |
3319 | #endif | |
5af923b0 MS |
3320 | case bfd_mach_sparc_v8plus: |
3321 | case bfd_mach_sparc_v8plusa: | |
f81824a9 AC |
3322 | #if 0 |
3323 | // OBSOLETE case bfd_mach_sparc_sparclite_le: | |
3324 | #endif | |
5af923b0 MS |
3325 | /* 32-bit machine types: */ |
3326 | ||
3327 | #ifdef SPARC32_CALL_DUMMY_ON_STACK | |
ae45cd16 | 3328 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack); |
5af923b0 | 3329 | set_gdbarch_call_dummy_address (gdbarch, sparc_call_dummy_address); |
b1e29e33 AC |
3330 | set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch, 0x30); |
3331 | set_gdbarch_deprecated_call_dummy_length (gdbarch, 0x38); | |
7e57f5f4 | 3332 | |
7043d8dc AC |
3333 | /* NOTE: cagney/2003-05-01: Using the just added push_dummy_code |
3334 | architecture method, it is now possible to implement a | |
3335 | generic dummy frames based inferior function call that stores | |
3336 | the breakpoint (and struct info) on the stack. Further, by | |
3337 | treating a SIGSEG at a breakpoint as equivalent to a SIGTRAP | |
3338 | it is even possible to make this work when the stack is | |
3339 | no-execute. | |
3340 | ||
3341 | NOTE: cagney/2002-04-26: Based from info posted by Peter | |
7e57f5f4 AC |
3342 | Schauer around Oct '99. Briefly, due to aspects of the SPARC |
3343 | ABI, it isn't possible to use ON_STACK with a strictly | |
3344 | compliant compiler. | |
3345 | ||
3346 | Peter Schauer writes ... | |
3347 | ||
3348 | No, any call from GDB to a user function returning a | |
3349 | struct/union will fail miserably. Try this: | |
3350 | ||
3351 | *NOINDENT* | |
3352 | struct x | |
3353 | { | |
3354 | int a[4]; | |
3355 | }; | |
3356 | ||
3357 | struct x gx; | |
3358 | ||
3359 | struct x | |
3360 | sret () | |
3361 | { | |
3362 | return gx; | |
3363 | } | |
3364 | ||
3365 | main () | |
3366 | { | |
3367 | int i; | |
3368 | for (i = 0; i < 4; i++) | |
3369 | gx.a[i] = i + 1; | |
3370 | gx = sret (); | |
3371 | } | |
3372 | *INDENT* | |
3373 | ||
3374 | Set a breakpoint at the gx = sret () statement, run to it and | |
3375 | issue a `print sret()'. It will not succed with your | |
3376 | approach, and I doubt that continuing the program will work | |
3377 | as well. | |
3378 | ||
3379 | For details of the ABI see the Sparc Architecture Manual. I | |
3380 | have Version 8 (Prentice Hall ISBN 0-13-825001-4) and the | |
3381 | calling conventions for functions returning aggregate values | |
3382 | are explained in Appendix D.3. */ | |
3383 | ||
5af923b0 | 3384 | set_gdbarch_call_dummy_location (gdbarch, ON_STACK); |
b1e29e33 | 3385 | set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_32); |
5af923b0 | 3386 | #else |
ae45cd16 | 3387 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_at_entry_point); |
b1e29e33 | 3388 | set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_nil); |
5af923b0 | 3389 | #endif |
1bf6d5cc | 3390 | set_gdbarch_deprecated_call_dummy_stack_adjust (gdbarch, 68); |
5af923b0 MS |
3391 | set_gdbarch_frame_args_skip (gdbarch, 68); |
3392 | set_gdbarch_function_start_offset (gdbarch, 0); | |
3393 | set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
3394 | set_gdbarch_npc_regnum (gdbarch, SPARC32_NPC_REGNUM); | |
3395 | set_gdbarch_pc_regnum (gdbarch, SPARC32_PC_REGNUM); | |
3396 | set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
b81774d8 | 3397 | set_gdbarch_deprecated_push_arguments (gdbarch, sparc32_push_arguments); |
5af923b0 | 3398 | |
9c04cab7 AC |
3399 | set_gdbarch_deprecated_register_byte (gdbarch, sparc32_register_byte); |
3400 | set_gdbarch_deprecated_register_raw_size (gdbarch, sparc32_register_size); | |
b1e29e33 | 3401 | set_gdbarch_deprecated_register_size (gdbarch, 4); |
9c04cab7 AC |
3402 | set_gdbarch_deprecated_register_virtual_size (gdbarch, sparc32_register_size); |
3403 | set_gdbarch_deprecated_register_virtual_type (gdbarch, sparc32_register_virtual_type); | |
5af923b0 | 3404 | #ifdef SPARC32_CALL_DUMMY_ON_STACK |
b1e29e33 | 3405 | set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (call_dummy_32)); |
5af923b0 | 3406 | #else |
b1e29e33 | 3407 | set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, 0); |
5af923b0 MS |
3408 | #endif |
3409 | set_gdbarch_stack_align (gdbarch, sparc32_stack_align); | |
f933a9c5 | 3410 | set_gdbarch_deprecated_extra_stack_alignment_needed (gdbarch, 1); |
4183d812 | 3411 | set_gdbarch_deprecated_store_struct_return (gdbarch, sparc32_store_struct_return); |
5af923b0 MS |
3412 | set_gdbarch_use_struct_convention (gdbarch, |
3413 | generic_use_struct_convention); | |
b46e02f6 | 3414 | set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp); |
5af923b0 MS |
3415 | tdep->y_regnum = SPARC32_Y_REGNUM; |
3416 | tdep->fp_max_regnum = SPARC_FP0_REGNUM + 32; | |
3417 | tdep->intreg_size = 4; | |
3418 | tdep->reg_save_offset = 0x60; | |
3419 | tdep->call_dummy_call_offset = 0x24; | |
3420 | break; | |
3421 | ||
3422 | case bfd_mach_sparc_v9: | |
3423 | case bfd_mach_sparc_v9a: | |
3424 | /* 64-bit machine types: */ | |
3425 | default: /* Any new machine type is likely to be 64-bit. */ | |
3426 | ||
3427 | #ifdef SPARC64_CALL_DUMMY_ON_STACK | |
ae45cd16 | 3428 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack); |
5af923b0 | 3429 | set_gdbarch_call_dummy_address (gdbarch, sparc_call_dummy_address); |
b1e29e33 AC |
3430 | set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch, 8 * 4); |
3431 | set_gdbarch_deprecated_call_dummy_length (gdbarch, 192); | |
5af923b0 | 3432 | set_gdbarch_call_dummy_location (gdbarch, ON_STACK); |
b1e29e33 AC |
3433 | set_gdbarch_deprecated_call_dummy_start_offset (gdbarch, 148); |
3434 | set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_64); | |
5af923b0 | 3435 | #else |
ae45cd16 | 3436 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_at_entry_point); |
b1e29e33 | 3437 | set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_nil); |
5af923b0 | 3438 | #endif |
1bf6d5cc | 3439 | set_gdbarch_deprecated_call_dummy_stack_adjust (gdbarch, 128); |
5af923b0 MS |
3440 | set_gdbarch_frame_args_skip (gdbarch, 136); |
3441 | set_gdbarch_function_start_offset (gdbarch, 0); | |
3442 | set_gdbarch_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
3443 | set_gdbarch_npc_regnum (gdbarch, SPARC64_NPC_REGNUM); | |
3444 | set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); | |
3445 | set_gdbarch_ptr_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
b81774d8 | 3446 | set_gdbarch_deprecated_push_arguments (gdbarch, sparc64_push_arguments); |
5af923b0 | 3447 | /* NOTE different for at_entry */ |
0ba6dca9 | 3448 | set_gdbarch_deprecated_target_read_fp (gdbarch, sparc64_read_fp); |
5af923b0 MS |
3449 | set_gdbarch_read_sp (gdbarch, sparc64_read_sp); |
3450 | /* Some of the registers aren't 64 bits, but it's a lot simpler just | |
3451 | to assume they all are (since most of them are). */ | |
9c04cab7 AC |
3452 | set_gdbarch_deprecated_register_byte (gdbarch, sparc64_register_byte); |
3453 | set_gdbarch_deprecated_register_raw_size (gdbarch, sparc64_register_size); | |
b1e29e33 | 3454 | set_gdbarch_deprecated_register_size (gdbarch, 8); |
9c04cab7 AC |
3455 | set_gdbarch_deprecated_register_virtual_size (gdbarch, sparc64_register_size); |
3456 | set_gdbarch_deprecated_register_virtual_type (gdbarch, sparc64_register_virtual_type); | |
5af923b0 | 3457 | #ifdef SPARC64_CALL_DUMMY_ON_STACK |
b1e29e33 | 3458 | set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (call_dummy_64)); |
5af923b0 | 3459 | #else |
b1e29e33 | 3460 | set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, 0); |
5af923b0 MS |
3461 | #endif |
3462 | set_gdbarch_stack_align (gdbarch, sparc64_stack_align); | |
f933a9c5 | 3463 | set_gdbarch_deprecated_extra_stack_alignment_needed (gdbarch, 1); |
4183d812 | 3464 | set_gdbarch_deprecated_store_struct_return (gdbarch, sparc64_store_struct_return); |
5af923b0 MS |
3465 | set_gdbarch_use_struct_convention (gdbarch, |
3466 | sparc64_use_struct_convention); | |
6c0e89ed | 3467 | set_gdbarch_deprecated_dummy_write_sp (gdbarch, sparc64_write_sp); |
5af923b0 MS |
3468 | tdep->y_regnum = SPARC64_Y_REGNUM; |
3469 | tdep->fp_max_regnum = SPARC_FP0_REGNUM + 48; | |
3470 | tdep->intreg_size = 8; | |
3471 | tdep->reg_save_offset = 0x90; | |
3472 | tdep->call_dummy_call_offset = 148 + 4 * 5; | |
3473 | break; | |
3474 | } | |
3475 | ||
3476 | /* | |
3477 | * Settings that vary per-architecture: | |
3478 | */ | |
3479 | ||
3480 | switch (info.bfd_arch_info->mach) | |
3481 | { | |
3482 | case bfd_mach_sparc: | |
44b7b84e MK |
3483 | set_gdbarch_extract_return_value (gdbarch, sparc32_extract_return_value); |
3484 | set_gdbarch_store_return_value (gdbarch, sparc32_store_return_value); | |
5af923b0 | 3485 | set_gdbarch_num_regs (gdbarch, 72); |
b8b527c5 | 3486 | set_gdbarch_deprecated_register_bytes (gdbarch, 32*4 + 32*4 + 8*4); |
5af923b0 | 3487 | set_gdbarch_register_name (gdbarch, sparc32_register_name); |
f81824a9 AC |
3488 | #if 0 |
3489 | // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */ | |
3490 | #endif | |
5af923b0 MS |
3491 | tdep->fp_register_bytes = 32 * 4; |
3492 | tdep->print_insn_mach = bfd_mach_sparc; | |
3493 | break; | |
f81824a9 AC |
3494 | #if 0 |
3495 | // OBSOLETE case bfd_mach_sparc_sparclet: | |
3496 | // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparclet_extract_return_value); | |
3497 | // OBSOLETE set_gdbarch_num_regs (gdbarch, 32 + 32 + 8 + 8 + 8); | |
3498 | // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4 + 8*4); | |
3499 | // OBSOLETE set_gdbarch_register_name (gdbarch, sparclet_register_name); | |
3500 | // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparclet_store_return_value); | |
3501 | // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */ | |
3502 | // OBSOLETE tdep->fp_register_bytes = 0; | |
3503 | // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclet; | |
3504 | // OBSOLETE break; | |
3505 | #endif | |
3506 | #if 0 | |
3507 | // OBSOLETE case bfd_mach_sparc_sparclite: | |
3508 | // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparc32_extract_return_value); | |
3509 | // OBSOLETE set_gdbarch_num_regs (gdbarch, 80); | |
3510 | // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4); | |
3511 | // OBSOLETE set_gdbarch_register_name (gdbarch, sparclite_register_name); | |
3512 | // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value); | |
3513 | // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */ | |
3514 | // OBSOLETE tdep->fp_register_bytes = 0; | |
3515 | // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclite; | |
3516 | // OBSOLETE break; | |
3517 | #endif | |
5af923b0 | 3518 | case bfd_mach_sparc_v8plus: |
44b7b84e MK |
3519 | set_gdbarch_extract_return_value (gdbarch, sparc32_extract_return_value); |
3520 | set_gdbarch_store_return_value (gdbarch, sparc32_store_return_value); | |
5af923b0 | 3521 | set_gdbarch_num_regs (gdbarch, 72); |
b8b527c5 | 3522 | set_gdbarch_deprecated_register_bytes (gdbarch, 32*4 + 32*4 + 8*4); |
5af923b0 | 3523 | set_gdbarch_register_name (gdbarch, sparc32_register_name); |
5af923b0 MS |
3524 | tdep->print_insn_mach = bfd_mach_sparc; |
3525 | tdep->fp_register_bytes = 32 * 4; | |
f81824a9 AC |
3526 | #if 0 |
3527 | // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */ | |
3528 | #endif | |
5af923b0 MS |
3529 | break; |
3530 | case bfd_mach_sparc_v8plusa: | |
44b7b84e MK |
3531 | set_gdbarch_extract_return_value (gdbarch, sparc32_extract_return_value); |
3532 | set_gdbarch_store_return_value (gdbarch, sparc32_store_return_value); | |
5af923b0 | 3533 | set_gdbarch_num_regs (gdbarch, 72); |
b8b527c5 | 3534 | set_gdbarch_deprecated_register_bytes (gdbarch, 32*4 + 32*4 + 8*4); |
5af923b0 | 3535 | set_gdbarch_register_name (gdbarch, sparc32_register_name); |
f81824a9 AC |
3536 | #if 0 |
3537 | // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */ | |
3538 | #endif | |
5af923b0 MS |
3539 | tdep->fp_register_bytes = 32 * 4; |
3540 | tdep->print_insn_mach = bfd_mach_sparc; | |
3541 | break; | |
f81824a9 AC |
3542 | #if 0 |
3543 | // OBSOLETE case bfd_mach_sparc_sparclite_le: | |
3544 | // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparc32_extract_return_value); | |
3545 | // OBSOLETE set_gdbarch_num_regs (gdbarch, 80); | |
3546 | // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4); | |
3547 | // OBSOLETE set_gdbarch_register_name (gdbarch, sparclite_register_name); | |
3548 | // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value); | |
3549 | // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */ | |
3550 | // OBSOLETE tdep->fp_register_bytes = 0; | |
3551 | // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclite; | |
3552 | // OBSOLETE break; | |
3553 | #endif | |
5af923b0 | 3554 | case bfd_mach_sparc_v9: |
26e9b323 | 3555 | set_gdbarch_deprecated_extract_return_value (gdbarch, sparc64_extract_return_value); |
5af923b0 | 3556 | set_gdbarch_num_regs (gdbarch, 125); |
b8b527c5 | 3557 | set_gdbarch_deprecated_register_bytes (gdbarch, 32*8 + 32*8 + 45*8); |
5af923b0 | 3558 | set_gdbarch_register_name (gdbarch, sparc64_register_name); |
ebba8386 | 3559 | set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value); |
f81824a9 AC |
3560 | #if 0 |
3561 | // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */ | |
3562 | #endif | |
5af923b0 MS |
3563 | tdep->fp_register_bytes = 64 * 4; |
3564 | tdep->print_insn_mach = bfd_mach_sparc_v9a; | |
3565 | break; | |
3566 | case bfd_mach_sparc_v9a: | |
26e9b323 | 3567 | set_gdbarch_deprecated_extract_return_value (gdbarch, sparc64_extract_return_value); |
5af923b0 | 3568 | set_gdbarch_num_regs (gdbarch, 125); |
b8b527c5 | 3569 | set_gdbarch_deprecated_register_bytes (gdbarch, 32*8 + 32*8 + 45*8); |
5af923b0 | 3570 | set_gdbarch_register_name (gdbarch, sparc64_register_name); |
ebba8386 | 3571 | set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value); |
f81824a9 AC |
3572 | #if 0 |
3573 | // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */ | |
3574 | #endif | |
5af923b0 MS |
3575 | tdep->fp_register_bytes = 64 * 4; |
3576 | tdep->print_insn_mach = bfd_mach_sparc_v9a; | |
3577 | break; | |
3578 | } | |
3579 | ||
ef3cf062 | 3580 | /* Hook in OS ABI-specific overrides, if they have been registered. */ |
4be87837 | 3581 | gdbarch_init_osabi (info, gdbarch); |
ef3cf062 | 3582 | |
5af923b0 MS |
3583 | return gdbarch; |
3584 | } | |
3585 | ||
ef3cf062 JT |
3586 | static void |
3587 | sparc_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file) | |
3588 | { | |
3589 | struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); | |
3590 | ||
3591 | if (tdep == NULL) | |
3592 | return; | |
3593 | ||
f81824a9 AC |
3594 | #if 0 |
3595 | // OBSOLETE fprintf_unfiltered (file, "sparc_dump_tdep: has_fpu = %d\n", | |
3596 | // OBSOLETE tdep->has_fpu); | |
3597 | #endif | |
4be87837 DJ |
3598 | fprintf_unfiltered (file, "sparc_dump_tdep: fp_register_bytes = %d\n", |
3599 | tdep->fp_register_bytes); | |
3600 | fprintf_unfiltered (file, "sparc_dump_tdep: y_regnum = %d\n", | |
3601 | tdep->y_regnum); | |
3602 | fprintf_unfiltered (file, "sparc_dump_tdep: fp_max_regnum = %d\n", | |
3603 | tdep->fp_max_regnum); | |
3604 | fprintf_unfiltered (file, "sparc_dump_tdep: intreg_size = %d\n", | |
3605 | tdep->intreg_size); | |
3606 | fprintf_unfiltered (file, "sparc_dump_tdep: reg_save_offset = %d\n", | |
3607 | tdep->reg_save_offset); | |
3608 | fprintf_unfiltered (file, "sparc_dump_tdep: call_dummy_call_offset = %d\n", | |
3609 | tdep->call_dummy_call_offset); | |
3610 | fprintf_unfiltered (file, "sparc_dump_tdep: print_insn_match = %d\n", | |
d995ff4b | 3611 | tdep->print_insn_mach); |
ef3cf062 | 3612 | } |