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0543f387 | 1 | /* Target-dependent code for the VAX. |
464e0365 | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
0543f387 MK |
21 | #include "arch-utils.h" |
22 | #include "dis-asm.h" | |
c11c3a98 | 23 | #include "frame.h" |
7def7fef MK |
24 | #include "frame-base.h" |
25 | #include "frame-unwind.h" | |
0543f387 MK |
26 | #include "gdbcore.h" |
27 | #include "gdbtypes.h" | |
4be87837 | 28 | #include "osabi.h" |
0543f387 | 29 | #include "regcache.h" |
8b910bab | 30 | #include "regset.h" |
0543f387 MK |
31 | #include "trad-frame.h" |
32 | #include "value.h" | |
8b910bab | 33 | |
f267bd6a JT |
34 | #include "vax-tdep.h" |
35 | ||
5e6b39ff MK |
36 | /* Return the name of register REGNUM. */ |
37 | ||
fa88f677 | 38 | static const char * |
d93859e2 | 39 | vax_register_name (struct gdbarch *gdbarch, int regnum) |
51eb8b08 | 40 | { |
a121b7c1 | 41 | static const char *register_names[] = |
51eb8b08 | 42 | { |
5e6b39ff MK |
43 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
44 | "r8", "r9", "r10", "r11", "ap", "fp", "sp", "pc", | |
51eb8b08 JT |
45 | "ps", |
46 | }; | |
47 | ||
5e6b39ff MK |
48 | if (regnum >= 0 && regnum < ARRAY_SIZE (register_names)) |
49 | return register_names[regnum]; | |
51eb8b08 | 50 | |
5e6b39ff | 51 | return NULL; |
51eb8b08 JT |
52 | } |
53 | ||
5e6b39ff | 54 | /* Return the GDB type object for the "standard" data type of data in |
581e13c1 | 55 | register REGNUM. */ |
51eb8b08 | 56 | |
f267bd6a | 57 | static struct type * |
5e6b39ff | 58 | vax_register_type (struct gdbarch *gdbarch, int regnum) |
51eb8b08 | 59 | { |
0dfff4cb | 60 | return builtin_type (gdbarch)->builtin_int; |
51eb8b08 JT |
61 | } |
62 | \f | |
8b910bab MK |
63 | /* Core file support. */ |
64 | ||
65 | /* Supply register REGNUM from the buffer specified by GREGS and LEN | |
66 | in the general-purpose register set REGSET to register cache | |
67 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ | |
68 | ||
69 | static void | |
70 | vax_supply_gregset (const struct regset *regset, struct regcache *regcache, | |
71 | int regnum, const void *gregs, size_t len) | |
72 | { | |
19ba03f4 | 73 | const gdb_byte *regs = (const gdb_byte *) gregs; |
8b910bab MK |
74 | int i; |
75 | ||
76 | for (i = 0; i < VAX_NUM_REGS; i++) | |
77 | { | |
78 | if (regnum == i || regnum == -1) | |
73e1c03f | 79 | regcache->raw_supply (i, regs + i * 4); |
8b910bab MK |
80 | } |
81 | } | |
52efde73 | 82 | |
8b910bab MK |
83 | /* VAX register set. */ |
84 | ||
3ca7dae4 | 85 | static const struct regset vax_gregset = |
8b910bab MK |
86 | { |
87 | NULL, | |
88 | vax_supply_gregset | |
89 | }; | |
90 | ||
f73d3ce7 | 91 | /* Iterate over core file register note sections. */ |
8b910bab | 92 | |
f73d3ce7 AA |
93 | static void |
94 | vax_iterate_over_regset_sections (struct gdbarch *gdbarch, | |
95 | iterate_over_regset_sections_cb *cb, | |
96 | void *cb_data, | |
97 | const struct regcache *regcache) | |
8b910bab | 98 | { |
a616bb94 | 99 | cb (".reg", VAX_NUM_REGS * 4, VAX_NUM_REGS * 4, &vax_gregset, NULL, cb_data); |
8b910bab MK |
100 | } |
101 | \f | |
4cd80476 | 102 | /* The VAX UNIX calling convention uses R1 to pass a structure return |
67b441e1 MK |
103 | value address instead of passing it as a first (hidden) argument as |
104 | the VMS calling convention suggests. */ | |
105 | ||
7346c184 MK |
106 | static CORE_ADDR |
107 | vax_store_arguments (struct regcache *regcache, int nargs, | |
67b441e1 | 108 | struct value **args, CORE_ADDR sp) |
52efde73 | 109 | { |
ac7936df | 110 | struct gdbarch *gdbarch = regcache->arch (); |
e17a4113 | 111 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
8cc49c48 | 112 | gdb_byte buf[4]; |
7346c184 MK |
113 | int count = 0; |
114 | int i; | |
52efde73 | 115 | |
7346c184 MK |
116 | /* We create an argument list on the stack, and make the argument |
117 | pointer to it. */ | |
52efde73 | 118 | |
7346c184 MK |
119 | /* Push arguments in reverse order. */ |
120 | for (i = nargs - 1; i >= 0; i--) | |
52efde73 | 121 | { |
4754a64e | 122 | int len = TYPE_LENGTH (value_enclosing_type (args[i])); |
7346c184 MK |
123 | |
124 | sp -= (len + 3) & ~3; | |
125 | count += (len + 3) / 4; | |
46615f07 | 126 | write_memory (sp, value_contents_all (args[i]), len); |
52efde73 | 127 | } |
a33f7558 | 128 | |
7346c184 MK |
129 | /* Push argument count. */ |
130 | sp -= 4; | |
e17a4113 | 131 | store_unsigned_integer (buf, 4, byte_order, count); |
7346c184 | 132 | write_memory (sp, buf, 4); |
a33f7558 | 133 | |
7346c184 | 134 | /* Update the argument pointer. */ |
e17a4113 | 135 | store_unsigned_integer (buf, 4, byte_order, sp); |
b66f5587 | 136 | regcache->cooked_write (VAX_AP_REGNUM, buf); |
a33f7558 | 137 | |
7346c184 MK |
138 | return sp; |
139 | } | |
140 | ||
141 | static CORE_ADDR | |
7d9b040b | 142 | vax_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
7346c184 | 143 | struct regcache *regcache, CORE_ADDR bp_addr, int nargs, |
cf84fa6b AH |
144 | struct value **args, CORE_ADDR sp, |
145 | function_call_return_method return_method, | |
7346c184 MK |
146 | CORE_ADDR struct_addr) |
147 | { | |
e17a4113 | 148 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
7346c184 | 149 | CORE_ADDR fp = sp; |
8cc49c48 | 150 | gdb_byte buf[4]; |
7346c184 MK |
151 | |
152 | /* Set up the function arguments. */ | |
67b441e1 MK |
153 | sp = vax_store_arguments (regcache, nargs, args, sp); |
154 | ||
155 | /* Store return value address. */ | |
cf84fa6b | 156 | if (return_method == return_method_struct) |
67b441e1 | 157 | regcache_cooked_write_unsigned (regcache, VAX_R1_REGNUM, struct_addr); |
7346c184 MK |
158 | |
159 | /* Store return address in the PC slot. */ | |
160 | sp -= 4; | |
e17a4113 | 161 | store_unsigned_integer (buf, 4, byte_order, bp_addr); |
7346c184 MK |
162 | write_memory (sp, buf, 4); |
163 | ||
164 | /* Store the (fake) frame pointer in the FP slot. */ | |
165 | sp -= 4; | |
e17a4113 | 166 | store_unsigned_integer (buf, 4, byte_order, fp); |
7346c184 MK |
167 | write_memory (sp, buf, 4); |
168 | ||
169 | /* Skip the AP slot. */ | |
170 | sp -= 4; | |
171 | ||
172 | /* Store register save mask and control bits. */ | |
173 | sp -= 4; | |
e17a4113 | 174 | store_unsigned_integer (buf, 4, byte_order, 0); |
7346c184 MK |
175 | write_memory (sp, buf, 4); |
176 | ||
177 | /* Store condition handler. */ | |
178 | sp -= 4; | |
e17a4113 | 179 | store_unsigned_integer (buf, 4, byte_order, 0); |
7346c184 MK |
180 | write_memory (sp, buf, 4); |
181 | ||
182 | /* Update the stack pointer and frame pointer. */ | |
e17a4113 | 183 | store_unsigned_integer (buf, 4, byte_order, sp); |
b66f5587 SM |
184 | regcache->cooked_write (VAX_SP_REGNUM, buf); |
185 | regcache->cooked_write (VAX_FP_REGNUM, buf); | |
7346c184 MK |
186 | |
187 | /* Return the saved (fake) frame pointer. */ | |
188 | return fp; | |
189 | } | |
190 | ||
191 | static struct frame_id | |
94afd7a6 | 192 | vax_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
a33f7558 | 193 | { |
7346c184 MK |
194 | CORE_ADDR fp; |
195 | ||
94afd7a6 UW |
196 | fp = get_frame_register_unsigned (this_frame, VAX_FP_REGNUM); |
197 | return frame_id_build (fp, get_frame_pc (this_frame)); | |
a33f7558 | 198 | } |
ab62c900 | 199 | \f |
7346c184 | 200 | |
67b441e1 | 201 | static enum return_value_convention |
6a3a010b | 202 | vax_return_value (struct gdbarch *gdbarch, struct value *function, |
c055b101 | 203 | struct type *type, struct regcache *regcache, |
ad97a690 | 204 | struct value *value, |
c055b101 | 205 | gdb_byte *readbuf, const gdb_byte *writebuf) |
ea74468c | 206 | { |
bad43aa5 | 207 | int len = TYPE_LENGTH (type); |
8cc49c48 | 208 | gdb_byte buf[8]; |
ea74468c | 209 | |
78134374 SM |
210 | if (type->code () == TYPE_CODE_STRUCT |
211 | || type->code () == TYPE_CODE_UNION | |
212 | || type->code () == TYPE_CODE_ARRAY) | |
e5483145 MK |
213 | { |
214 | /* The default on VAX is to return structures in static memory. | |
215 | Consequently a function must return the address where we can | |
216 | find the return value. */ | |
217 | ||
218 | if (readbuf) | |
219 | { | |
220 | ULONGEST addr; | |
221 | ||
222 | regcache_raw_read_unsigned (regcache, VAX_R0_REGNUM, &addr); | |
bad43aa5 | 223 | read_memory (addr, readbuf, len); |
e5483145 MK |
224 | } |
225 | ||
226 | return RETURN_VALUE_ABI_RETURNS_ADDRESS; | |
227 | } | |
ea74468c | 228 | |
67b441e1 MK |
229 | if (readbuf) |
230 | { | |
231 | /* Read the contents of R0 and (if necessary) R1. */ | |
dca08e1f | 232 | regcache->cooked_read (VAX_R0_REGNUM, buf); |
bad43aa5 | 233 | if (len > 4) |
dca08e1f | 234 | regcache->cooked_read (VAX_R1_REGNUM, buf + 4); |
bad43aa5 | 235 | memcpy (readbuf, buf, len); |
67b441e1 MK |
236 | } |
237 | if (writebuf) | |
238 | { | |
239 | /* Read the contents to R0 and (if necessary) R1. */ | |
bad43aa5 | 240 | memcpy (buf, writebuf, len); |
b66f5587 | 241 | regcache->cooked_write (VAX_R0_REGNUM, buf); |
bad43aa5 | 242 | if (len > 4) |
b66f5587 | 243 | regcache->cooked_write (VAX_R1_REGNUM, buf + 4); |
67b441e1 MK |
244 | } |
245 | ||
246 | return RETURN_VALUE_REGISTER_CONVENTION; | |
ea74468c | 247 | } |
ea74468c | 248 | \f |
5e6b39ff MK |
249 | |
250 | /* Use the program counter to determine the contents and size of a | |
251 | breakpoint instruction. Return a pointer to a string of bytes that | |
252 | encode a breakpoint instruction, store the length of the string in | |
253 | *LEN and optionally adjust *PC to point to the correct memory | |
254 | location for inserting the breakpoint. */ | |
1d049c5e | 255 | |
04180708 | 256 | constexpr gdb_byte vax_break_insn[] = { 3 }; |
598cc9dc | 257 | |
04180708 | 258 | typedef BP_MANIPULATION (vax_break_insn) vax_breakpoint; |
1d049c5e | 259 | \f |
b83266a0 SS |
260 | /* Advance PC across any function entry prologue instructions |
261 | to reach some "real" code. */ | |
262 | ||
f267bd6a | 263 | static CORE_ADDR |
6093d2eb | 264 | vax_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
b83266a0 | 265 | { |
e17a4113 UW |
266 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
267 | gdb_byte op = read_memory_unsigned_integer (pc, 1, byte_order); | |
0543f387 | 268 | |
b83266a0 | 269 | if (op == 0x11) |
c5aa993b | 270 | pc += 2; /* skip brb */ |
b83266a0 | 271 | if (op == 0x31) |
c5aa993b | 272 | pc += 3; /* skip brw */ |
b83266a0 | 273 | if (op == 0xC2 |
e17a4113 | 274 | && read_memory_unsigned_integer (pc + 2, 1, byte_order) == 0x5E) |
c5aa993b | 275 | pc += 3; /* skip subl2 */ |
b83266a0 | 276 | if (op == 0x9E |
e17a4113 UW |
277 | && read_memory_unsigned_integer (pc + 1, 1, byte_order) == 0xAE |
278 | && read_memory_unsigned_integer (pc + 3, 1, byte_order) == 0x5E) | |
c5aa993b | 279 | pc += 4; /* skip movab */ |
b83266a0 | 280 | if (op == 0x9E |
e17a4113 UW |
281 | && read_memory_unsigned_integer (pc + 1, 1, byte_order) == 0xCE |
282 | && read_memory_unsigned_integer (pc + 4, 1, byte_order) == 0x5E) | |
c5aa993b | 283 | pc += 5; /* skip movab */ |
b83266a0 | 284 | if (op == 0x9E |
e17a4113 UW |
285 | && read_memory_unsigned_integer (pc + 1, 1, byte_order) == 0xEE |
286 | && read_memory_unsigned_integer (pc + 6, 1, byte_order) == 0x5E) | |
c5aa993b | 287 | pc += 7; /* skip movab */ |
0543f387 | 288 | |
b83266a0 SS |
289 | return pc; |
290 | } | |
7def7fef MK |
291 | \f |
292 | ||
293 | /* Unwinding the stack is relatively easy since the VAX has a | |
294 | dedicated frame pointer, and frames are set up automatically as the | |
295 | result of a function call. Most of the relevant information can be | |
296 | inferred from the documentation of the Procedure Call Instructions | |
297 | in the VAX MACRO and Instruction Set Reference Manual. */ | |
298 | ||
299 | struct vax_frame_cache | |
300 | { | |
301 | /* Base address. */ | |
302 | CORE_ADDR base; | |
303 | ||
304 | /* Table of saved registers. */ | |
305 | struct trad_frame_saved_reg *saved_regs; | |
306 | }; | |
307 | ||
63807e1d | 308 | static struct vax_frame_cache * |
94afd7a6 | 309 | vax_frame_cache (struct frame_info *this_frame, void **this_cache) |
7def7fef MK |
310 | { |
311 | struct vax_frame_cache *cache; | |
312 | CORE_ADDR addr; | |
313 | ULONGEST mask; | |
314 | int regnum; | |
315 | ||
316 | if (*this_cache) | |
19ba03f4 | 317 | return (struct vax_frame_cache *) *this_cache; |
7def7fef MK |
318 | |
319 | /* Allocate a new cache. */ | |
320 | cache = FRAME_OBSTACK_ZALLOC (struct vax_frame_cache); | |
94afd7a6 | 321 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
7def7fef MK |
322 | |
323 | /* The frame pointer is used as the base for the frame. */ | |
94afd7a6 | 324 | cache->base = get_frame_register_unsigned (this_frame, VAX_FP_REGNUM); |
7def7fef MK |
325 | if (cache->base == 0) |
326 | return cache; | |
327 | ||
328 | /* The register save mask and control bits determine the layout of | |
329 | the stack frame. */ | |
94afd7a6 | 330 | mask = get_frame_memory_unsigned (this_frame, cache->base + 4, 4) >> 16; |
7def7fef MK |
331 | |
332 | /* These are always saved. */ | |
333 | cache->saved_regs[VAX_PC_REGNUM].addr = cache->base + 16; | |
334 | cache->saved_regs[VAX_FP_REGNUM].addr = cache->base + 12; | |
335 | cache->saved_regs[VAX_AP_REGNUM].addr = cache->base + 8; | |
336 | cache->saved_regs[VAX_PS_REGNUM].addr = cache->base + 4; | |
337 | ||
338 | /* Scan the register save mask and record the location of the saved | |
339 | registers. */ | |
340 | addr = cache->base + 20; | |
341 | for (regnum = 0; regnum < VAX_AP_REGNUM; regnum++) | |
342 | { | |
343 | if (mask & (1 << regnum)) | |
344 | { | |
345 | cache->saved_regs[regnum].addr = addr; | |
346 | addr += 4; | |
347 | } | |
348 | } | |
349 | ||
350 | /* The CALLS/CALLG flag determines whether this frame has a General | |
351 | Argument List or a Stack Argument List. */ | |
352 | if (mask & (1 << 13)) | |
353 | { | |
354 | ULONGEST numarg; | |
355 | ||
356 | /* This is a procedure with Stack Argument List. Adjust the | |
e36ad527 | 357 | stack address for the arguments that were pushed onto the |
7def7fef MK |
358 | stack. The return instruction will automatically pop the |
359 | arguments from the stack. */ | |
94afd7a6 | 360 | numarg = get_frame_memory_unsigned (this_frame, addr, 1); |
7def7fef MK |
361 | addr += 4 + numarg * 4; |
362 | } | |
363 | ||
364 | /* Bits 1:0 of the stack pointer were saved in the control bits. */ | |
365 | trad_frame_set_value (cache->saved_regs, VAX_SP_REGNUM, addr + (mask >> 14)); | |
366 | ||
367 | return cache; | |
368 | } | |
369 | ||
370 | static void | |
94afd7a6 | 371 | vax_frame_this_id (struct frame_info *this_frame, void **this_cache, |
7def7fef MK |
372 | struct frame_id *this_id) |
373 | { | |
94afd7a6 | 374 | struct vax_frame_cache *cache = vax_frame_cache (this_frame, this_cache); |
7def7fef MK |
375 | |
376 | /* This marks the outermost frame. */ | |
377 | if (cache->base == 0) | |
378 | return; | |
379 | ||
94afd7a6 | 380 | (*this_id) = frame_id_build (cache->base, get_frame_func (this_frame)); |
7def7fef MK |
381 | } |
382 | ||
94afd7a6 UW |
383 | static struct value * |
384 | vax_frame_prev_register (struct frame_info *this_frame, | |
385 | void **this_cache, int regnum) | |
7def7fef | 386 | { |
94afd7a6 | 387 | struct vax_frame_cache *cache = vax_frame_cache (this_frame, this_cache); |
7def7fef | 388 | |
94afd7a6 | 389 | return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum); |
7def7fef MK |
390 | } |
391 | ||
392 | static const struct frame_unwind vax_frame_unwind = | |
393 | { | |
394 | NORMAL_FRAME, | |
8fbca658 | 395 | default_frame_unwind_stop_reason, |
7def7fef | 396 | vax_frame_this_id, |
94afd7a6 UW |
397 | vax_frame_prev_register, |
398 | NULL, | |
399 | default_frame_sniffer | |
7def7fef | 400 | }; |
7def7fef MK |
401 | \f |
402 | ||
403 | static CORE_ADDR | |
94afd7a6 | 404 | vax_frame_base_address (struct frame_info *this_frame, void **this_cache) |
7def7fef | 405 | { |
94afd7a6 | 406 | struct vax_frame_cache *cache = vax_frame_cache (this_frame, this_cache); |
7def7fef MK |
407 | |
408 | return cache->base; | |
409 | } | |
b83266a0 | 410 | |
f267bd6a | 411 | static CORE_ADDR |
94afd7a6 | 412 | vax_frame_args_address (struct frame_info *this_frame, void **this_cache) |
7def7fef | 413 | { |
94afd7a6 | 414 | return get_frame_register_unsigned (this_frame, VAX_AP_REGNUM); |
7def7fef MK |
415 | } |
416 | ||
417 | static const struct frame_base vax_frame_base = | |
a33f7558 | 418 | { |
7def7fef MK |
419 | &vax_frame_unwind, |
420 | vax_frame_base_address, | |
421 | vax_frame_base_address, | |
422 | vax_frame_args_address | |
423 | }; | |
424 | ||
425 | /* Return number of arguments for FRAME. */ | |
426 | ||
427 | static int | |
428 | vax_frame_num_args (struct frame_info *frame) | |
429 | { | |
430 | CORE_ADDR args; | |
431 | ||
432 | /* Assume that the argument pointer for the outermost frame is | |
433 | hosed, as is the case on NetBSD/vax ELF. */ | |
a54f9a00 | 434 | if (get_frame_base_address (frame) == 0) |
7def7fef MK |
435 | return 0; |
436 | ||
437 | args = get_frame_register_unsigned (frame, VAX_AP_REGNUM); | |
438 | return get_frame_memory_unsigned (frame, args, 1); | |
439 | } | |
440 | ||
a33f7558 | 441 | \f |
7def7fef | 442 | |
f267bd6a JT |
443 | /* Initialize the current architecture based on INFO. If possible, re-use an |
444 | architecture from ARCHES, which is a list of architectures already created | |
445 | during this debugging session. | |
446 | ||
447 | Called e.g. at program startup, when reading a core file, and when reading | |
448 | a binary file. */ | |
449 | ||
450 | static struct gdbarch * | |
451 | vax_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
452 | { | |
453 | struct gdbarch *gdbarch; | |
454 | ||
4be87837 DJ |
455 | /* If there is already a candidate, use it. */ |
456 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
457 | if (arches != NULL) | |
458 | return arches->gdbarch; | |
f267bd6a | 459 | |
4be87837 | 460 | gdbarch = gdbarch_alloc (&info, NULL); |
4791e091 | 461 | |
8da61cc4 DJ |
462 | set_gdbarch_float_format (gdbarch, floatformats_vax_f); |
463 | set_gdbarch_double_format (gdbarch, floatformats_vax_d); | |
464 | set_gdbarch_long_double_format (gdbarch, floatformats_vax_d); | |
465 | set_gdbarch_long_double_bit (gdbarch, 64); | |
0a3e99f6 | 466 | |
f267bd6a JT |
467 | /* Register info */ |
468 | set_gdbarch_num_regs (gdbarch, VAX_NUM_REGS); | |
5e6b39ff MK |
469 | set_gdbarch_register_name (gdbarch, vax_register_name); |
470 | set_gdbarch_register_type (gdbarch, vax_register_type); | |
f267bd6a | 471 | set_gdbarch_sp_regnum (gdbarch, VAX_SP_REGNUM); |
f267bd6a JT |
472 | set_gdbarch_pc_regnum (gdbarch, VAX_PC_REGNUM); |
473 | set_gdbarch_ps_regnum (gdbarch, VAX_PS_REGNUM); | |
474 | ||
f73d3ce7 AA |
475 | set_gdbarch_iterate_over_regset_sections |
476 | (gdbarch, vax_iterate_over_regset_sections); | |
8b910bab | 477 | |
f267bd6a JT |
478 | /* Frame and stack info */ |
479 | set_gdbarch_skip_prologue (gdbarch, vax_skip_prologue); | |
f267bd6a | 480 | set_gdbarch_frame_num_args (gdbarch, vax_frame_num_args); |
f267bd6a JT |
481 | set_gdbarch_frame_args_skip (gdbarch, 4); |
482 | ||
5e6b39ff | 483 | /* Stack grows downward. */ |
f267bd6a JT |
484 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
485 | ||
486 | /* Return value info */ | |
67b441e1 | 487 | set_gdbarch_return_value (gdbarch, vax_return_value); |
f267bd6a | 488 | |
7346c184 MK |
489 | /* Call dummy code. */ |
490 | set_gdbarch_push_dummy_call (gdbarch, vax_push_dummy_call); | |
94afd7a6 | 491 | set_gdbarch_dummy_id (gdbarch, vax_dummy_id); |
f267bd6a JT |
492 | |
493 | /* Breakpoint info */ | |
04180708 YQ |
494 | set_gdbarch_breakpoint_kind_from_pc (gdbarch, vax_breakpoint::kind_from_pc); |
495 | set_gdbarch_sw_breakpoint_from_kind (gdbarch, vax_breakpoint::bp_from_kind); | |
f267bd6a JT |
496 | |
497 | /* Misc info */ | |
782263ab | 498 | set_gdbarch_deprecated_function_start_offset (gdbarch, 2); |
1d049c5e | 499 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); |
f267bd6a | 500 | |
7def7fef MK |
501 | frame_base_set_default (gdbarch, &vax_frame_base); |
502 | ||
4791e091 | 503 | /* Hook in ABI-specific overrides, if they have been registered. */ |
4be87837 | 504 | gdbarch_init_osabi (info, gdbarch); |
4791e091 | 505 | |
94afd7a6 | 506 | frame_unwind_append_unwinder (gdbarch, &vax_frame_unwind); |
7def7fef | 507 | |
f267bd6a JT |
508 | return (gdbarch); |
509 | } | |
c906108c | 510 | |
6c265988 | 511 | void _initialize_vax_tdep (); |
c906108c | 512 | void |
6c265988 | 513 | _initialize_vax_tdep () |
c906108c | 514 | { |
4be87837 | 515 | gdbarch_register (bfd_arch_vax, vax_gdbarch_init, NULL); |
c906108c | 516 | } |