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c906108c | 1 | /* Print VAX instructions for GDB, the GNU debugger. |
4be87837 | 2 | Copyright 1986, 1989, 1991, 1992, 1995, 1996, 1998, 1999, 2000, 2002, 2003 |
b6ba6518 | 3 | Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "opcode/vax.h" | |
c11c3a98 | 25 | #include "gdbcore.h" |
f267bd6a | 26 | #include "inferior.h" |
a33f7558 | 27 | #include "regcache.h" |
c11c3a98 AC |
28 | #include "frame.h" |
29 | #include "value.h" | |
f267bd6a | 30 | #include "arch-utils.h" |
9bbe19fb | 31 | #include "gdb_string.h" |
4be87837 | 32 | #include "osabi.h" |
f267bd6a JT |
33 | |
34 | #include "vax-tdep.h" | |
35 | ||
36 | static gdbarch_register_name_ftype vax_register_name; | |
37 | static gdbarch_register_byte_ftype vax_register_byte; | |
38 | static gdbarch_register_raw_size_ftype vax_register_raw_size; | |
39 | static gdbarch_register_virtual_size_ftype vax_register_virtual_size; | |
40 | static gdbarch_register_virtual_type_ftype vax_register_virtual_type; | |
41 | ||
42 | static gdbarch_skip_prologue_ftype vax_skip_prologue; | |
43 | static gdbarch_saved_pc_after_call_ftype vax_saved_pc_after_call; | |
44 | static gdbarch_frame_num_args_ftype vax_frame_num_args; | |
618ce49f | 45 | static gdbarch_deprecated_frame_chain_ftype vax_frame_chain; |
f267bd6a JT |
46 | static gdbarch_frame_args_address_ftype vax_frame_args_address; |
47 | static gdbarch_frame_locals_address_ftype vax_frame_locals_address; | |
f267bd6a | 48 | |
26e9b323 | 49 | static gdbarch_deprecated_extract_return_value_ftype vax_extract_return_value; |
26e9b323 | 50 | static gdbarch_deprecated_extract_struct_value_address_ftype |
f267bd6a JT |
51 | vax_extract_struct_value_address; |
52 | ||
f3824013 | 53 | static gdbarch_deprecated_push_dummy_frame_ftype vax_push_dummy_frame; |
f267bd6a | 54 | static gdbarch_fix_call_dummy_ftype vax_fix_call_dummy; |
c906108c | 55 | |
75bc7ddf AC |
56 | /* Return 1 if P points to an invalid floating point value. |
57 | LEN is the length in bytes -- not relevant on the Vax. */ | |
58 | ||
59 | /* FIXME: cagney/2002-01-19: The macro below was originally defined in | |
60 | tm-vax.h and used in values.c. Two problems. Firstly this is a | |
61 | very non-portable and secondly it is wrong. The VAX should be | |
62 | using floatformat and associated methods to identify and handle | |
63 | invalid floating-point values. Adding to the poor target's woes | |
64 | there is no floatformat_vax_{f,d} and no TARGET_FLOAT_FORMAT | |
65 | et.al.. */ | |
66 | ||
67 | /* FIXME: cagney/2002-01-19: It turns out that the only thing that | |
68 | uses this macro is the vax disassembler code (so how old is this | |
69 | target?). This target should instead be using the opcodes | |
70 | disassembler. That allowing the macro to be eliminated. */ | |
71 | ||
72 | #define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000) | |
73 | ||
c906108c SS |
74 | /* Vax instructions are never longer than this. */ |
75 | #define MAXLEN 62 | |
76 | ||
77 | /* Number of elements in the opcode table. */ | |
78 | #define NOPCODES (sizeof votstrs / sizeof votstrs[0]) | |
79 | ||
80 | static unsigned char *print_insn_arg (); | |
81 | \f | |
fa88f677 | 82 | static const char * |
51eb8b08 JT |
83 | vax_register_name (int regno) |
84 | { | |
85 | static char *register_names[] = | |
86 | { | |
87 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
88 | "r8", "r9", "r10", "r11", "ap", "fp", "sp", "pc", | |
89 | "ps", | |
90 | }; | |
91 | ||
92 | if (regno < 0) | |
93 | return (NULL); | |
94 | if (regno >= (sizeof(register_names) / sizeof(*register_names))) | |
95 | return (NULL); | |
96 | return (register_names[regno]); | |
97 | } | |
98 | ||
f267bd6a | 99 | static int |
51eb8b08 JT |
100 | vax_register_byte (int regno) |
101 | { | |
102 | return (regno * 4); | |
103 | } | |
104 | ||
f267bd6a | 105 | static int |
51eb8b08 JT |
106 | vax_register_raw_size (int regno) |
107 | { | |
108 | return (4); | |
109 | } | |
110 | ||
f267bd6a | 111 | static int |
51eb8b08 JT |
112 | vax_register_virtual_size (int regno) |
113 | { | |
114 | return (4); | |
115 | } | |
116 | ||
f267bd6a | 117 | static struct type * |
51eb8b08 JT |
118 | vax_register_virtual_type (int regno) |
119 | { | |
120 | return (builtin_type_int); | |
121 | } | |
122 | \f | |
f267bd6a | 123 | static void |
ab62c900 JT |
124 | vax_frame_init_saved_regs (struct frame_info *frame) |
125 | { | |
126 | int regnum, regmask; | |
127 | CORE_ADDR next_addr; | |
128 | ||
b2fb4676 | 129 | if (get_frame_saved_regs (frame)) |
ab62c900 JT |
130 | return; |
131 | ||
132 | frame_saved_regs_zalloc (frame); | |
133 | ||
1e2330ba | 134 | regmask = read_memory_integer (get_frame_base (frame) + 4, 4) >> 16; |
ab62c900 | 135 | |
1e2330ba | 136 | next_addr = get_frame_base (frame) + 16; |
ab62c900 JT |
137 | |
138 | /* regmask's low bit is for register 0, which is the first one | |
139 | what would be pushed. */ | |
1d049c5e | 140 | for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++) |
ab62c900 JT |
141 | { |
142 | if (regmask & (1 << regnum)) | |
b2fb4676 | 143 | get_frame_saved_regs (frame)[regnum] = next_addr += 4; |
ab62c900 JT |
144 | } |
145 | ||
b2fb4676 | 146 | get_frame_saved_regs (frame)[SP_REGNUM] = next_addr + 4; |
ab62c900 | 147 | if (regmask & (1 << FP_REGNUM)) |
b2fb4676 | 148 | get_frame_saved_regs (frame)[SP_REGNUM] += |
ab62c900 JT |
149 | 4 + (4 * read_memory_integer (next_addr + 4, 4)); |
150 | ||
1e2330ba AC |
151 | get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 16; |
152 | get_frame_saved_regs (frame)[FP_REGNUM] = get_frame_base (frame) + 12; | |
153 | get_frame_saved_regs (frame)[VAX_AP_REGNUM] = get_frame_base (frame) + 8; | |
154 | get_frame_saved_regs (frame)[PS_REGNUM] = get_frame_base (frame) + 4; | |
ab62c900 | 155 | } |
5516aa92 | 156 | |
f407986f AC |
157 | /* Get saved user PC for sigtramp from sigcontext for BSD style sigtramp. */ |
158 | ||
159 | static CORE_ADDR | |
160 | vax_sigtramp_saved_pc (struct frame_info *frame) | |
161 | { | |
162 | CORE_ADDR sigcontext_addr; | |
163 | char *buf; | |
164 | int ptrbytes = TYPE_LENGTH (builtin_type_void_func_ptr); | |
165 | int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT; | |
166 | ||
167 | buf = alloca (ptrbytes); | |
168 | /* Get sigcontext address, it is the third parameter on the stack. */ | |
11c02a10 | 169 | if (get_next_frame (frame)) |
f407986f | 170 | sigcontext_addr = read_memory_typed_address |
11c02a10 AC |
171 | (FRAME_ARGS_ADDRESS (get_next_frame (frame)) |
172 | + FRAME_ARGS_SKIP + sigcontext_offs, | |
f407986f AC |
173 | builtin_type_void_data_ptr); |
174 | else | |
175 | sigcontext_addr = read_memory_typed_address | |
176 | (read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr); | |
177 | ||
178 | /* Don't cause a memory_error when accessing sigcontext in case the stack | |
179 | layout has changed or the stack is corrupt. */ | |
180 | target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes); | |
181 | return extract_typed_address (buf, builtin_type_void_func_ptr); | |
182 | } | |
183 | ||
f267bd6a | 184 | static CORE_ADDR |
5516aa92 JT |
185 | vax_frame_saved_pc (struct frame_info *frame) |
186 | { | |
5a203e44 | 187 | if ((get_frame_type (frame) == SIGTRAMP_FRAME)) |
f407986f | 188 | return (vax_sigtramp_saved_pc (frame)); /* XXXJRT */ |
5516aa92 | 189 | |
1e2330ba | 190 | return (read_memory_integer (get_frame_base (frame) + 16, 4)); |
5516aa92 JT |
191 | } |
192 | ||
193 | CORE_ADDR | |
194 | vax_frame_args_address_correct (struct frame_info *frame) | |
195 | { | |
196 | /* Cannot find the AP register value directly from the FP value. Must | |
197 | find it saved in the frame called by this one, or in the AP register | |
198 | for the innermost frame. However, there is no way to tell the | |
199 | difference between the innermost frame and a frame for which we | |
200 | just don't know the frame that it called (e.g. "info frame 0x7ffec789"). | |
201 | For the sake of argument, suppose that the stack is somewhat trashed | |
202 | (which is one reason that "info frame" exists). So, return 0 (indicating | |
203 | we don't know the address of the arglist) if we don't know what frame | |
204 | this frame calls. */ | |
11c02a10 AC |
205 | if (get_next_frame (frame)) |
206 | return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4)); | |
5516aa92 JT |
207 | |
208 | return (0); | |
209 | } | |
210 | ||
f267bd6a | 211 | static CORE_ADDR |
5516aa92 JT |
212 | vax_frame_args_address (struct frame_info *frame) |
213 | { | |
214 | /* In most of GDB, getting the args address is too important to | |
215 | just say "I don't know". This is sometimes wrong for functions | |
216 | that aren't on top of the stack, but c'est la vie. */ | |
11c02a10 AC |
217 | if (get_next_frame (frame)) |
218 | return (read_memory_integer (get_frame_base (get_next_frame (frame)) + 8, 4)); | |
5516aa92 | 219 | |
1d049c5e | 220 | return (read_register (VAX_AP_REGNUM)); |
5516aa92 JT |
221 | } |
222 | ||
f267bd6a | 223 | static CORE_ADDR |
5516aa92 JT |
224 | vax_frame_locals_address (struct frame_info *frame) |
225 | { | |
1e2330ba | 226 | return (get_frame_base (frame)); |
5516aa92 JT |
227 | } |
228 | ||
f267bd6a | 229 | static int |
5516aa92 JT |
230 | vax_frame_num_args (struct frame_info *fi) |
231 | { | |
232 | return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1)); | |
233 | } | |
52efde73 | 234 | |
f267bd6a | 235 | static CORE_ADDR |
52efde73 JT |
236 | vax_frame_chain (struct frame_info *frame) |
237 | { | |
238 | /* In the case of the VAX, the frame's nominal address is the FP value, | |
239 | and 12 bytes later comes the saved previous FP value as a 4-byte word. */ | |
50abf9e5 | 240 | if (inside_entry_file (get_frame_pc (frame))) |
52efde73 JT |
241 | return (0); |
242 | ||
1e2330ba | 243 | return (read_memory_integer (get_frame_base (frame) + 12, 4)); |
52efde73 JT |
244 | } |
245 | \f | |
f267bd6a | 246 | static void |
52efde73 JT |
247 | vax_push_dummy_frame (void) |
248 | { | |
249 | CORE_ADDR sp = read_register (SP_REGNUM); | |
250 | int regnum; | |
251 | ||
252 | sp = push_word (sp, 0); /* arglist */ | |
253 | for (regnum = 11; regnum >= 0; regnum--) | |
254 | sp = push_word (sp, read_register (regnum)); | |
255 | sp = push_word (sp, read_register (PC_REGNUM)); | |
256 | sp = push_word (sp, read_register (FP_REGNUM)); | |
1d049c5e | 257 | sp = push_word (sp, read_register (VAX_AP_REGNUM)); |
52efde73 JT |
258 | sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) + 0x2fff0000); |
259 | sp = push_word (sp, 0); | |
260 | write_register (SP_REGNUM, sp); | |
261 | write_register (FP_REGNUM, sp); | |
1d049c5e | 262 | write_register (VAX_AP_REGNUM, sp + (17 * 4)); |
52efde73 JT |
263 | } |
264 | ||
f267bd6a | 265 | static void |
52efde73 JT |
266 | vax_pop_frame (void) |
267 | { | |
268 | CORE_ADDR fp = read_register (FP_REGNUM); | |
269 | int regnum; | |
270 | int regmask = read_memory_integer (fp + 4, 4); | |
271 | ||
272 | write_register (PS_REGNUM, | |
273 | (regmask & 0xffff) | |
274 | | (read_register (PS_REGNUM) & 0xffff0000)); | |
275 | write_register (PC_REGNUM, read_memory_integer (fp + 16, 4)); | |
276 | write_register (FP_REGNUM, read_memory_integer (fp + 12, 4)); | |
1d049c5e | 277 | write_register (VAX_AP_REGNUM, read_memory_integer (fp + 8, 4)); |
52efde73 JT |
278 | fp += 16; |
279 | for (regnum = 0; regnum < 12; regnum++) | |
280 | if (regmask & (0x10000 << regnum)) | |
281 | write_register (regnum, read_memory_integer (fp += 4, 4)); | |
282 | fp = fp + 4 + ((regmask >> 30) & 3); | |
283 | if (regmask & 0x20000000) | |
284 | { | |
285 | regnum = read_memory_integer (fp, 4); | |
286 | fp += (regnum + 1) * 4; | |
287 | } | |
288 | write_register (SP_REGNUM, fp); | |
289 | flush_cached_frames (); | |
290 | } | |
a33f7558 JT |
291 | |
292 | /* The VAX call dummy sequence: | |
293 | ||
294 | calls #69, @#32323232 | |
295 | bpt | |
296 | ||
297 | It is 8 bytes long. The address and argc are patched by | |
298 | vax_fix_call_dummy(). */ | |
f267bd6a JT |
299 | static LONGEST vax_call_dummy_words[] = { 0x329f69fb, 0x03323232 }; |
300 | static int sizeof_vax_call_dummy_words = sizeof(vax_call_dummy_words); | |
a33f7558 | 301 | |
f267bd6a | 302 | static void |
a33f7558 JT |
303 | vax_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, |
304 | struct value **args, struct type *type, int gcc_p) | |
305 | { | |
306 | dummy[1] = nargs; | |
307 | store_unsigned_integer (dummy + 3, 4, fun); | |
308 | } | |
ab62c900 | 309 | \f |
f267bd6a | 310 | static void |
ea74468c JT |
311 | vax_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) |
312 | { | |
313 | write_register (1, addr); | |
314 | } | |
315 | ||
f267bd6a | 316 | static void |
ea74468c JT |
317 | vax_extract_return_value (struct type *valtype, char *regbuf, char *valbuf) |
318 | { | |
319 | memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (valtype)); | |
320 | } | |
321 | ||
f267bd6a | 322 | static void |
ea74468c JT |
323 | vax_store_return_value (struct type *valtype, char *valbuf) |
324 | { | |
73937e03 | 325 | deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (valtype)); |
ea74468c JT |
326 | } |
327 | ||
f267bd6a | 328 | static CORE_ADDR |
ea74468c JT |
329 | vax_extract_struct_value_address (char *regbuf) |
330 | { | |
331 | return (extract_address (regbuf + REGISTER_BYTE (0), REGISTER_RAW_SIZE (0))); | |
332 | } | |
333 | \f | |
1d049c5e JT |
334 | static const unsigned char * |
335 | vax_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) | |
336 | { | |
337 | static const unsigned char vax_breakpoint[] = { 3 }; | |
338 | ||
339 | *lenptr = sizeof(vax_breakpoint); | |
340 | return (vax_breakpoint); | |
341 | } | |
342 | \f | |
b83266a0 SS |
343 | /* Advance PC across any function entry prologue instructions |
344 | to reach some "real" code. */ | |
345 | ||
f267bd6a | 346 | static CORE_ADDR |
fba45db2 | 347 | vax_skip_prologue (CORE_ADDR pc) |
b83266a0 SS |
348 | { |
349 | register int op = (unsigned char) read_memory_integer (pc, 1); | |
350 | if (op == 0x11) | |
c5aa993b | 351 | pc += 2; /* skip brb */ |
b83266a0 | 352 | if (op == 0x31) |
c5aa993b | 353 | pc += 3; /* skip brw */ |
b83266a0 | 354 | if (op == 0xC2 |
c5aa993b JM |
355 | && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5E) |
356 | pc += 3; /* skip subl2 */ | |
b83266a0 | 357 | if (op == 0x9E |
c5aa993b JM |
358 | && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xAE |
359 | && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5E) | |
360 | pc += 4; /* skip movab */ | |
b83266a0 | 361 | if (op == 0x9E |
c5aa993b JM |
362 | && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xCE |
363 | && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5E) | |
364 | pc += 5; /* skip movab */ | |
b83266a0 | 365 | if (op == 0x9E |
c5aa993b JM |
366 | && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xEE |
367 | && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5E) | |
368 | pc += 7; /* skip movab */ | |
b83266a0 SS |
369 | return pc; |
370 | } | |
371 | ||
f267bd6a | 372 | static CORE_ADDR |
a33f7558 JT |
373 | vax_saved_pc_after_call (struct frame_info *frame) |
374 | { | |
8bedc050 | 375 | return (DEPRECATED_FRAME_SAVED_PC(frame)); |
a33f7558 JT |
376 | } |
377 | \f | |
c906108c SS |
378 | /* Print the vax instruction at address MEMADDR in debugged memory, |
379 | from disassembler info INFO. | |
380 | Returns length of the instruction, in bytes. */ | |
381 | ||
382 | static int | |
fba45db2 | 383 | vax_print_insn (CORE_ADDR memaddr, disassemble_info *info) |
c906108c SS |
384 | { |
385 | unsigned char buffer[MAXLEN]; | |
386 | register int i; | |
387 | register unsigned char *p; | |
c11c3a98 | 388 | const char *d; |
c906108c SS |
389 | |
390 | int status = (*info->read_memory_func) (memaddr, buffer, MAXLEN, info); | |
391 | if (status != 0) | |
392 | { | |
393 | (*info->memory_error_func) (status, memaddr, info); | |
394 | return -1; | |
395 | } | |
396 | ||
397 | for (i = 0; i < NOPCODES; i++) | |
398 | if (votstrs[i].detail.code == buffer[0] | |
c5aa993b | 399 | || votstrs[i].detail.code == *(unsigned short *) buffer) |
c906108c SS |
400 | break; |
401 | ||
402 | /* Handle undefined instructions. */ | |
403 | if (i == NOPCODES) | |
404 | { | |
405 | (*info->fprintf_func) (info->stream, "0%o", buffer[0]); | |
406 | return 1; | |
407 | } | |
408 | ||
409 | (*info->fprintf_func) (info->stream, "%s", votstrs[i].name); | |
410 | ||
411 | /* Point at first byte of argument data, | |
412 | and at descriptor for first argument. */ | |
413 | p = buffer + 1 + (votstrs[i].detail.code >= 0x100); | |
414 | d = votstrs[i].detail.args; | |
415 | ||
416 | if (*d) | |
417 | (*info->fprintf_func) (info->stream, " "); | |
418 | ||
419 | while (*d) | |
420 | { | |
421 | p = print_insn_arg (d, p, memaddr + (p - buffer), info); | |
422 | d += 2; | |
423 | if (*d) | |
424 | (*info->fprintf_func) (info->stream, ","); | |
425 | } | |
426 | return p - buffer; | |
427 | } | |
f267bd6a | 428 | \f |
c906108c | 429 | static unsigned char * |
fba45db2 KB |
430 | print_insn_arg (char *d, register char *p, CORE_ADDR addr, |
431 | disassemble_info *info) | |
c906108c SS |
432 | { |
433 | register int regnum = *p & 0xf; | |
434 | float floatlitbuf; | |
435 | ||
436 | if (*d == 'b') | |
437 | { | |
438 | if (d[1] == 'b') | |
439 | (*info->fprintf_func) (info->stream, "0x%x", addr + *p++ + 1); | |
440 | else | |
441 | { | |
c5aa993b | 442 | (*info->fprintf_func) (info->stream, "0x%x", addr + *(short *) p + 2); |
c906108c SS |
443 | p += 2; |
444 | } | |
445 | } | |
446 | else | |
447 | switch ((*p++ >> 4) & 0xf) | |
448 | { | |
449 | case 0: | |
450 | case 1: | |
451 | case 2: | |
452 | case 3: /* Literal mode */ | |
453 | if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h') | |
454 | { | |
c5aa993b | 455 | *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4); |
c906108c SS |
456 | (*info->fprintf_func) (info->stream, "$%f", floatlitbuf); |
457 | } | |
458 | else | |
459 | (*info->fprintf_func) (info->stream, "$%d", p[-1] & 0x3f); | |
460 | break; | |
461 | ||
462 | case 4: /* Indexed */ | |
463 | p = (char *) print_insn_arg (d, p, addr + 1, info); | |
464 | (*info->fprintf_func) (info->stream, "[%s]", REGISTER_NAME (regnum)); | |
465 | break; | |
466 | ||
467 | case 5: /* Register */ | |
468 | (*info->fprintf_func) (info->stream, REGISTER_NAME (regnum)); | |
469 | break; | |
470 | ||
471 | case 7: /* Autodecrement */ | |
472 | (*info->fprintf_func) (info->stream, "-"); | |
473 | case 6: /* Register deferred */ | |
474 | (*info->fprintf_func) (info->stream, "(%s)", REGISTER_NAME (regnum)); | |
475 | break; | |
476 | ||
477 | case 9: /* Autoincrement deferred */ | |
478 | (*info->fprintf_func) (info->stream, "@"); | |
479 | if (regnum == PC_REGNUM) | |
480 | { | |
481 | (*info->fprintf_func) (info->stream, "#"); | |
c5aa993b | 482 | info->target = *(long *) p; |
c906108c SS |
483 | (*info->print_address_func) (info->target, info); |
484 | p += 4; | |
485 | break; | |
486 | } | |
487 | case 8: /* Autoincrement */ | |
488 | if (regnum == PC_REGNUM) | |
489 | { | |
490 | (*info->fprintf_func) (info->stream, "#"); | |
491 | switch (d[1]) | |
492 | { | |
493 | case 'b': | |
494 | (*info->fprintf_func) (info->stream, "%d", *p++); | |
495 | break; | |
496 | ||
497 | case 'w': | |
c5aa993b | 498 | (*info->fprintf_func) (info->stream, "%d", *(short *) p); |
c906108c SS |
499 | p += 2; |
500 | break; | |
501 | ||
502 | case 'l': | |
c5aa993b | 503 | (*info->fprintf_func) (info->stream, "%d", *(long *) p); |
c906108c SS |
504 | p += 4; |
505 | break; | |
506 | ||
507 | case 'q': | |
508 | (*info->fprintf_func) (info->stream, "0x%x%08x", | |
c5aa993b | 509 | ((long *) p)[1], ((long *) p)[0]); |
c906108c SS |
510 | p += 8; |
511 | break; | |
512 | ||
513 | case 'o': | |
514 | (*info->fprintf_func) (info->stream, "0x%x%08x%08x%08x", | |
c5aa993b JM |
515 | ((long *) p)[3], ((long *) p)[2], |
516 | ((long *) p)[1], ((long *) p)[0]); | |
c906108c SS |
517 | p += 16; |
518 | break; | |
519 | ||
520 | case 'f': | |
521 | if (INVALID_FLOAT (p, 4)) | |
522 | (*info->fprintf_func) (info->stream, | |
523 | "<<invalid float 0x%x>>", | |
524 | *(int *) p); | |
525 | else | |
526 | (*info->fprintf_func) (info->stream, "%f", *(float *) p); | |
527 | p += 4; | |
528 | break; | |
529 | ||
530 | case 'd': | |
531 | if (INVALID_FLOAT (p, 8)) | |
532 | (*info->fprintf_func) (info->stream, | |
533 | "<<invalid float 0x%x%08x>>", | |
c5aa993b | 534 | ((long *) p)[1], ((long *) p)[0]); |
c906108c SS |
535 | else |
536 | (*info->fprintf_func) (info->stream, "%f", *(double *) p); | |
537 | p += 8; | |
538 | break; | |
539 | ||
540 | case 'g': | |
541 | (*info->fprintf_func) (info->stream, "g-float"); | |
542 | p += 8; | |
543 | break; | |
544 | ||
545 | case 'h': | |
546 | (*info->fprintf_func) (info->stream, "h-float"); | |
547 | p += 16; | |
548 | break; | |
549 | ||
550 | } | |
551 | } | |
552 | else | |
553 | (*info->fprintf_func) (info->stream, "(%s)+", REGISTER_NAME (regnum)); | |
554 | break; | |
555 | ||
556 | case 11: /* Byte displacement deferred */ | |
557 | (*info->fprintf_func) (info->stream, "@"); | |
558 | case 10: /* Byte displacement */ | |
559 | if (regnum == PC_REGNUM) | |
560 | { | |
561 | info->target = addr + *p + 2; | |
562 | (*info->print_address_func) (info->target, info); | |
563 | } | |
564 | else | |
565 | (*info->fprintf_func) (info->stream, "%d(%s)", *p, REGISTER_NAME (regnum)); | |
566 | p += 1; | |
567 | break; | |
568 | ||
569 | case 13: /* Word displacement deferred */ | |
570 | (*info->fprintf_func) (info->stream, "@"); | |
571 | case 12: /* Word displacement */ | |
572 | if (regnum == PC_REGNUM) | |
573 | { | |
c5aa993b | 574 | info->target = addr + *(short *) p + 3; |
c906108c SS |
575 | (*info->print_address_func) (info->target, info); |
576 | } | |
577 | else | |
578 | (*info->fprintf_func) (info->stream, "%d(%s)", | |
c5aa993b | 579 | *(short *) p, REGISTER_NAME (regnum)); |
c906108c SS |
580 | p += 2; |
581 | break; | |
582 | ||
583 | case 15: /* Long displacement deferred */ | |
584 | (*info->fprintf_func) (info->stream, "@"); | |
585 | case 14: /* Long displacement */ | |
586 | if (regnum == PC_REGNUM) | |
587 | { | |
c5aa993b | 588 | info->target = addr + *(short *) p + 5; |
c906108c SS |
589 | (*info->print_address_func) (info->target, info); |
590 | } | |
591 | else | |
592 | (*info->fprintf_func) (info->stream, "%d(%s)", | |
c5aa993b | 593 | *(long *) p, REGISTER_NAME (regnum)); |
c906108c SS |
594 | p += 4; |
595 | } | |
596 | ||
597 | return (unsigned char *) p; | |
598 | } | |
f267bd6a JT |
599 | \f |
600 | /* Initialize the current architecture based on INFO. If possible, re-use an | |
601 | architecture from ARCHES, which is a list of architectures already created | |
602 | during this debugging session. | |
603 | ||
604 | Called e.g. at program startup, when reading a core file, and when reading | |
605 | a binary file. */ | |
606 | ||
607 | static struct gdbarch * | |
608 | vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
609 | { | |
610 | struct gdbarch *gdbarch; | |
611 | ||
4be87837 DJ |
612 | /* If there is already a candidate, use it. */ |
613 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
614 | if (arches != NULL) | |
615 | return arches->gdbarch; | |
f267bd6a | 616 | |
4be87837 | 617 | gdbarch = gdbarch_alloc (&info, NULL); |
4791e091 | 618 | |
a5afb99f AC |
619 | /* NOTE: cagney/2002-12-06: This can be deleted when this arch is |
620 | ready to unwind the PC first (see frame.c:get_prev_frame()). */ | |
621 | set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default); | |
622 | ||
f267bd6a JT |
623 | /* Register info */ |
624 | set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS); | |
625 | set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM); | |
626 | set_gdbarch_fp_regnum (gdbarch, VAX_FP_REGNUM); | |
627 | set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM); | |
628 | set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM); | |
629 | ||
630 | set_gdbarch_register_name (gdbarch, vax_register_name); | |
631 | set_gdbarch_register_size (gdbarch, VAX_REGISTER_SIZE); | |
632 | set_gdbarch_register_bytes (gdbarch, VAX_REGISTER_BYTES); | |
633 | set_gdbarch_register_byte (gdbarch, vax_register_byte); | |
634 | set_gdbarch_register_raw_size (gdbarch, vax_register_raw_size); | |
a0ed5532 | 635 | set_gdbarch_deprecated_max_register_raw_size (gdbarch, VAX_MAX_REGISTER_RAW_SIZE); |
f267bd6a | 636 | set_gdbarch_register_virtual_size (gdbarch, vax_register_virtual_size); |
a0ed5532 | 637 | set_gdbarch_deprecated_max_register_virtual_size (gdbarch, |
f267bd6a JT |
638 | VAX_MAX_REGISTER_VIRTUAL_SIZE); |
639 | set_gdbarch_register_virtual_type (gdbarch, vax_register_virtual_type); | |
640 | ||
641 | /* Frame and stack info */ | |
642 | set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue); | |
643 | set_gdbarch_saved_pc_after_call (gdbarch, vax_saved_pc_after_call); | |
644 | ||
645 | set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args); | |
646 | set_gdbarch_frameless_function_invocation (gdbarch, | |
647 | generic_frameless_function_invocation_not); | |
648 | ||
618ce49f | 649 | set_gdbarch_deprecated_frame_chain (gdbarch, vax_frame_chain); |
8bedc050 | 650 | set_gdbarch_deprecated_frame_saved_pc (gdbarch, vax_frame_saved_pc); |
f267bd6a JT |
651 | |
652 | set_gdbarch_frame_args_address (gdbarch, vax_frame_args_address); | |
653 | set_gdbarch_frame_locals_address (gdbarch, vax_frame_locals_address); | |
654 | ||
f30ee0bc | 655 | set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, vax_frame_init_saved_regs); |
f267bd6a JT |
656 | |
657 | set_gdbarch_frame_args_skip (gdbarch, 4); | |
658 | ||
f267bd6a JT |
659 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
660 | ||
661 | /* Return value info */ | |
4183d812 | 662 | set_gdbarch_deprecated_store_struct_return (gdbarch, vax_store_struct_return); |
26e9b323 | 663 | set_gdbarch_deprecated_extract_return_value (gdbarch, vax_extract_return_value); |
ebba8386 | 664 | set_gdbarch_deprecated_store_return_value (gdbarch, vax_store_return_value); |
26e9b323 | 665 | set_gdbarch_deprecated_extract_struct_value_address (gdbarch, vax_extract_struct_value_address); |
f267bd6a JT |
666 | |
667 | /* Call dummy info */ | |
f3824013 | 668 | set_gdbarch_deprecated_push_dummy_frame (gdbarch, vax_push_dummy_frame); |
749b82f6 | 669 | set_gdbarch_deprecated_pop_frame (gdbarch, vax_pop_frame); |
f267bd6a JT |
670 | set_gdbarch_call_dummy_location (gdbarch, ON_STACK); |
671 | set_gdbarch_call_dummy_p (gdbarch, 1); | |
672 | set_gdbarch_call_dummy_words (gdbarch, vax_call_dummy_words); | |
673 | set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof_vax_call_dummy_words); | |
674 | set_gdbarch_fix_call_dummy (gdbarch, vax_fix_call_dummy); | |
675 | set_gdbarch_call_dummy_start_offset (gdbarch, 0); | |
676 | set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); | |
677 | set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 7); | |
07555a72 | 678 | set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0); |
ae45cd16 | 679 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack); |
f267bd6a JT |
680 | |
681 | /* Breakpoint info */ | |
1d049c5e | 682 | set_gdbarch_breakpoint_from_pc (gdbarch, vax_breakpoint_from_pc); |
f267bd6a JT |
683 | set_gdbarch_decr_pc_after_break (gdbarch, 0); |
684 | ||
685 | /* Misc info */ | |
686 | set_gdbarch_function_start_offset (gdbarch, 2); | |
1d049c5e | 687 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); |
f267bd6a | 688 | |
4791e091 | 689 | /* Hook in ABI-specific overrides, if they have been registered. */ |
4be87837 | 690 | gdbarch_init_osabi (info, gdbarch); |
4791e091 | 691 | |
f267bd6a JT |
692 | return (gdbarch); |
693 | } | |
c906108c SS |
694 | |
695 | void | |
fba45db2 | 696 | _initialize_vax_tdep (void) |
c906108c | 697 | { |
4be87837 | 698 | gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL); |
f267bd6a | 699 | |
c906108c SS |
700 | tm_print_insn = vax_print_insn; |
701 | } |