Commit | Line | Data |
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ec7b6fcf | 1 | /* Target-dependent code for Hitachi H8/500, for GDB. |
18b46e7c | 2 | Copyright 1993, 1994, 1995 Free Software Foundation, Inc. |
195e46ea SC |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
6c9638b4 | 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
195e46ea SC |
19 | |
20 | /* | |
21 | Contributed by Steve Chamberlain | |
22 | sac@cygnus.com | |
23 | */ | |
24 | ||
25 | #include "defs.h" | |
26 | #include "frame.h" | |
27 | #include "obstack.h" | |
28 | #include "symtab.h" | |
29 | #include "gdbtypes.h" | |
30 | #include "gdbcmd.h" | |
ccf1e898 | 31 | #include "value.h" |
195e46ea | 32 | #include "dis-asm.h" |
ec7b6fcf | 33 | #include "gdbcore.h" |
195e46ea SC |
34 | |
35 | #define UNSIGNED_SHORT(X) ((X) & 0xffff) | |
36 | ||
ec7b6fcf SS |
37 | static int code_size = 2; |
38 | ||
39 | static int data_size = 2; | |
195e46ea | 40 | |
ec7b6fcf | 41 | /* Shape of an H8/500 frame : |
195e46ea SC |
42 | |
43 | arg-n | |
44 | .. | |
45 | arg-2 | |
46 | arg-1 | |
47 | return address <2 or 4 bytes> | |
48 | old fp <2 bytes> | |
49 | auto-n | |
50 | .. | |
51 | auto-1 | |
52 | saved registers | |
53 | ||
54 | */ | |
55 | ||
195e46ea SC |
56 | /* an easy to debug H8 stack frame looks like: |
57 | 0x6df6 push r6 | |
58 | 0x0d76 mov.w r7,r6 | |
59 | 0x6dfn push reg | |
60 | 0x7905 nnnn mov.w #n,r5 or 0x1b87 subs #2,sp | |
61 | 0x1957 sub.w r5,sp | |
62 | ||
63 | */ | |
64 | ||
d1445327 | 65 | #define IS_PUSH(x) (((x) & 0xff00)==0x6d00) |
195e46ea SC |
66 | #define IS_LINK_8(x) ((x) == 0x17) |
67 | #define IS_LINK_16(x) ((x) == 0x1f) | |
d1445327 FF |
68 | #define IS_MOVE_FP(x) ((x) == 0x0d76) |
69 | #define IS_MOV_SP_FP(x) ((x) == 0x0d76) | |
70 | #define IS_SUB2_SP(x) ((x) == 0x1b87) | |
71 | #define IS_MOVK_R5(x) ((x) == 0x7905) | |
72 | #define IS_SUB_R5SP(x) ((x) == 0x1957) | |
195e46ea SC |
73 | |
74 | #define LINK_8 0x17 | |
75 | #define LINK_16 0x1f | |
76 | ||
77 | int minimum_mode = 1; | |
ccf1e898 | 78 | |
195e46ea SC |
79 | CORE_ADDR |
80 | h8500_skip_prologue (start_pc) | |
81 | CORE_ADDR start_pc; | |
195e46ea SC |
82 | { |
83 | short int w; | |
84 | ||
ec7b6fcf | 85 | w = read_memory_integer (start_pc, 1); |
195e46ea SC |
86 | if (w == LINK_8) |
87 | { | |
ccf1e898 | 88 | start_pc += 2; |
85e07872 | 89 | w = read_memory_integer (start_pc, 1); |
195e46ea SC |
90 | } |
91 | ||
92 | if (w == LINK_16) | |
93 | { | |
ccf1e898 | 94 | start_pc += 3; |
85e07872 | 95 | w = read_memory_integer (start_pc, 2); |
195e46ea SC |
96 | } |
97 | ||
195e46ea | 98 | return start_pc; |
195e46ea SC |
99 | } |
100 | ||
8743fc88 AC |
101 | CORE_ADDR |
102 | h8500_addr_bits_remove (addr) | |
103 | CORE_ADDR addr; | |
104 | { | |
105 | return ((addr) & 0xffffff); | |
106 | } | |
107 | ||
195e46ea SC |
108 | /* Given a GDB frame, determine the address of the calling function's frame. |
109 | This will be used to create a new GDB frame struct, and then | |
110 | INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. | |
111 | ||
112 | For us, the frame address is its stack pointer value, so we look up | |
113 | the function prologue to determine the caller's sp value, and return it. */ | |
114 | ||
669caa9c | 115 | CORE_ADDR |
ccf1e898 | 116 | h8500_frame_chain (thisframe) |
669caa9c | 117 | struct frame_info *thisframe; |
195e46ea | 118 | { |
ccf1e898 | 119 | if (!inside_entry_file (thisframe->pc)) |
08c0d7b8 | 120 | return (read_memory_integer (FRAME_FP (thisframe), PTR_SIZE)); |
ccf1e898 SG |
121 | else |
122 | return 0; | |
195e46ea SC |
123 | } |
124 | ||
195e46ea SC |
125 | /* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or |
126 | is not the address of a valid instruction, the address of the next | |
127 | instruction beyond ADDR otherwise. *PWORD1 receives the first word | |
128 | of the instruction.*/ | |
129 | ||
130 | CORE_ADDR | |
131 | NEXT_PROLOGUE_INSN (addr, lim, pword1) | |
132 | CORE_ADDR addr; | |
133 | CORE_ADDR lim; | |
134 | char *pword1; | |
135 | { | |
136 | if (addr < lim + 8) | |
137 | { | |
138 | read_memory (addr, pword1, 1); | |
139 | read_memory (addr, pword1 + 1, 1); | |
140 | return 1; | |
141 | } | |
142 | return 0; | |
143 | } | |
144 | ||
ec7b6fcf SS |
145 | /* Examine the prologue of a function. `ip' points to the first |
146 | instruction. `limit' is the limit of the prologue (e.g. the addr | |
147 | of the first linenumber, or perhaps the program counter if we're | |
148 | stepping through). `frame_sp' is the stack pointer value in use in | |
149 | this frame. `fsr' is a pointer to a frame_saved_regs structure | |
150 | into which we put info about the registers saved by this frame. | |
151 | `fi' is a struct frame_info pointer; we fill in various fields in | |
152 | it to reflect the offsets of the arg pointer and the locals | |
153 | pointer. */ | |
195e46ea SC |
154 | |
155 | /* Return the saved PC from this frame. */ | |
156 | ||
157 | CORE_ADDR | |
158 | frame_saved_pc (frame) | |
669caa9c | 159 | struct frame_info *frame; |
195e46ea | 160 | { |
669caa9c | 161 | return read_memory_integer (FRAME_FP (frame) + 2, PTR_SIZE); |
195e46ea SC |
162 | } |
163 | ||
ec7b6fcf SS |
164 | void |
165 | h8500_pop_frame () | |
195e46ea SC |
166 | { |
167 | unsigned regnum; | |
168 | struct frame_saved_regs fsr; | |
669caa9c | 169 | struct frame_info *frame = get_current_frame (); |
195e46ea | 170 | |
669caa9c | 171 | get_frame_saved_regs (frame, &fsr); |
195e46ea SC |
172 | |
173 | for (regnum = 0; regnum < 8; regnum++) | |
174 | { | |
175 | if (fsr.regs[regnum]) | |
ec7b6fcf | 176 | write_register (regnum, read_memory_short (fsr.regs[regnum])); |
195e46ea SC |
177 | |
178 | flush_cached_frames (); | |
195e46ea | 179 | } |
195e46ea SC |
180 | } |
181 | ||
182 | void | |
183 | print_register_hook (regno) | |
ec7b6fcf | 184 | int regno; |
195e46ea SC |
185 | { |
186 | if (regno == CCR_REGNUM) | |
187 | { | |
188 | /* CCR register */ | |
189 | ||
190 | int C, Z, N, V; | |
191 | unsigned char b[2]; | |
192 | unsigned char l; | |
193 | ||
194 | read_relative_register_raw_bytes (regno, b); | |
195 | l = b[1]; | |
199b2450 TL |
196 | printf_unfiltered ("\t"); |
197 | printf_unfiltered ("I-%d - ", (l & 0x80) != 0); | |
195e46ea SC |
198 | N = (l & 0x8) != 0; |
199 | Z = (l & 0x4) != 0; | |
200 | V = (l & 0x2) != 0; | |
201 | C = (l & 0x1) != 0; | |
199b2450 TL |
202 | printf_unfiltered ("N-%d ", N); |
203 | printf_unfiltered ("Z-%d ", Z); | |
204 | printf_unfiltered ("V-%d ", V); | |
205 | printf_unfiltered ("C-%d ", C); | |
195e46ea | 206 | if ((C | Z) == 0) |
199b2450 | 207 | printf_unfiltered ("u> "); |
195e46ea | 208 | if ((C | Z) == 1) |
199b2450 | 209 | printf_unfiltered ("u<= "); |
195e46ea | 210 | if ((C == 0)) |
199b2450 | 211 | printf_unfiltered ("u>= "); |
195e46ea | 212 | if (C == 1) |
199b2450 | 213 | printf_unfiltered ("u< "); |
195e46ea | 214 | if (Z == 0) |
199b2450 | 215 | printf_unfiltered ("!= "); |
195e46ea | 216 | if (Z == 1) |
199b2450 | 217 | printf_unfiltered ("== "); |
195e46ea | 218 | if ((N ^ V) == 0) |
199b2450 | 219 | printf_unfiltered (">= "); |
195e46ea | 220 | if ((N ^ V) == 1) |
199b2450 | 221 | printf_unfiltered ("< "); |
195e46ea | 222 | if ((Z | (N ^ V)) == 0) |
199b2450 | 223 | printf_unfiltered ("> "); |
195e46ea | 224 | if ((Z | (N ^ V)) == 1) |
199b2450 | 225 | printf_unfiltered ("<= "); |
195e46ea SC |
226 | } |
227 | } | |
228 | ||
ccf1e898 SG |
229 | int |
230 | h8500_register_size (regno) | |
231 | int regno; | |
195e46ea | 232 | { |
ec7b6fcf SS |
233 | switch (regno) |
234 | { | |
235 | case SEG_C_REGNUM: | |
236 | case SEG_D_REGNUM: | |
237 | case SEG_E_REGNUM: | |
238 | case SEG_T_REGNUM: | |
239 | return 1; | |
240 | case R0_REGNUM: | |
241 | case R1_REGNUM: | |
242 | case R2_REGNUM: | |
243 | case R3_REGNUM: | |
244 | case R4_REGNUM: | |
245 | case R5_REGNUM: | |
246 | case R6_REGNUM: | |
247 | case R7_REGNUM: | |
248 | case CCR_REGNUM: | |
249 | return 2; | |
250 | ||
251 | case PR0_REGNUM: | |
252 | case PR1_REGNUM: | |
253 | case PR2_REGNUM: | |
254 | case PR3_REGNUM: | |
255 | case PR4_REGNUM: | |
256 | case PR5_REGNUM: | |
257 | case PR6_REGNUM: | |
258 | case PR7_REGNUM: | |
259 | case PC_REGNUM: | |
260 | return 4; | |
261 | default: | |
262 | abort (); | |
263 | } | |
195e46ea SC |
264 | } |
265 | ||
266 | struct type * | |
ccf1e898 SG |
267 | h8500_register_virtual_type (regno) |
268 | int regno; | |
195e46ea | 269 | { |
ccf1e898 | 270 | switch (regno) |
195e46ea | 271 | { |
ccf1e898 SG |
272 | case SEG_C_REGNUM: |
273 | case SEG_E_REGNUM: | |
274 | case SEG_D_REGNUM: | |
275 | case SEG_T_REGNUM: | |
195e46ea | 276 | return builtin_type_unsigned_char; |
ccf1e898 SG |
277 | case R0_REGNUM: |
278 | case R1_REGNUM: | |
279 | case R2_REGNUM: | |
280 | case R3_REGNUM: | |
281 | case R4_REGNUM: | |
282 | case R5_REGNUM: | |
283 | case R6_REGNUM: | |
284 | case R7_REGNUM: | |
195e46ea SC |
285 | case CCR_REGNUM: |
286 | return builtin_type_unsigned_short; | |
08c0d7b8 SC |
287 | case PR0_REGNUM: |
288 | case PR1_REGNUM: | |
289 | case PR2_REGNUM: | |
290 | case PR3_REGNUM: | |
291 | case PR4_REGNUM: | |
292 | case PR5_REGNUM: | |
293 | case PR6_REGNUM: | |
294 | case PR7_REGNUM: | |
295 | case PC_REGNUM: | |
296 | return builtin_type_unsigned_long; | |
195e46ea | 297 | default: |
85e07872 | 298 | abort (); |
195e46ea SC |
299 | } |
300 | } | |
301 | ||
195e46ea SC |
302 | /* Put here the code to store, into a struct frame_saved_regs, |
303 | the addresses of the saved registers of frame described by FRAME_INFO. | |
304 | This includes special registers such as pc and fp saved in special | |
305 | ways in the stack frame. sp is even more special: | |
306 | the address we return for it IS the sp for the next frame. */ | |
307 | ||
308 | void | |
309 | frame_find_saved_regs (frame_info, frame_saved_regs) | |
310 | struct frame_info *frame_info; | |
311 | struct frame_saved_regs *frame_saved_regs; | |
195e46ea SC |
312 | { |
313 | register int regnum; | |
314 | register int regmask; | |
315 | register CORE_ADDR next_addr; | |
316 | register CORE_ADDR pc; | |
317 | unsigned char thebyte; | |
318 | ||
4ed97c9a | 319 | memset (frame_saved_regs, '\0', sizeof *frame_saved_regs); |
195e46ea SC |
320 | |
321 | if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 4 | |
322 | && (frame_info)->pc <= (frame_info)->frame) | |
323 | { | |
324 | next_addr = (frame_info)->frame; | |
325 | pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 4; | |
326 | } | |
327 | else | |
328 | { | |
329 | pc = get_pc_function_start ((frame_info)->pc); | |
330 | /* Verify we have a link a6 instruction next; | |
331 | if not we lose. If we win, find the address above the saved | |
332 | regs using the amount of storage from the link instruction. | |
333 | */ | |
334 | ||
85e07872 | 335 | thebyte = read_memory_integer (pc, 1); |
195e46ea SC |
336 | if (0x1f == thebyte) |
337 | next_addr = (frame_info)->frame + read_memory_integer (pc += 1, 2), pc += 2; | |
338 | else if (0x17 == thebyte) | |
339 | next_addr = (frame_info)->frame + read_memory_integer (pc += 1, 1), pc += 1; | |
340 | else | |
341 | goto lose; | |
342 | #if 0 | |
d1445327 | 343 | /* FIXME steve */ |
85e07872 SC |
344 | /* If have an add:g.waddal #-n, sp next, adjust next_addr. */ |
345 | if ((0x0c0177777 & read_memory_integer (pc, 2)) == 0157774) | |
346 | next_addr += read_memory_integer (pc += 2, 4), pc += 4; | |
195e46ea SC |
347 | #endif |
348 | } | |
349 | ||
85e07872 SC |
350 | thebyte = read_memory_integer (pc, 1); |
351 | if (thebyte == 0x12) | |
352 | { | |
353 | /* Got stm */ | |
354 | pc++; | |
355 | regmask = read_memory_integer (pc, 1); | |
356 | pc++; | |
357 | for (regnum = 0; regnum < 8; regnum++, regmask >>= 1) | |
358 | { | |
359 | if (regmask & 1) | |
360 | { | |
361 | (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2; | |
362 | } | |
363 | } | |
364 | thebyte = read_memory_integer (pc, 1); | |
365 | } | |
195e46ea | 366 | /* Maybe got a load of pushes */ |
85e07872 SC |
367 | while (thebyte == 0xbf) |
368 | { | |
369 | pc++; | |
370 | regnum = read_memory_integer (pc, 1) & 0x7; | |
371 | pc++; | |
372 | (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2; | |
373 | thebyte = read_memory_integer (pc, 1); | |
374 | } | |
375 | ||
376 | lose:; | |
377 | ||
195e46ea SC |
378 | /* Remember the address of the frame pointer */ |
379 | (frame_saved_regs)->regs[FP_REGNUM] = (frame_info)->frame; | |
380 | ||
381 | /* This is where the old sp is hidden */ | |
382 | (frame_saved_regs)->regs[SP_REGNUM] = (frame_info)->frame; | |
383 | ||
384 | /* And the PC - remember the pushed FP is always two bytes long */ | |
385 | (frame_saved_regs)->regs[PC_REGNUM] = (frame_info)->frame + 2; | |
386 | } | |
387 | ||
ec7b6fcf SS |
388 | CORE_ADDR |
389 | saved_pc_after_call () | |
195e46ea SC |
390 | { |
391 | int x; | |
85e07872 | 392 | int a = read_register (SP_REGNUM); |
ec7b6fcf | 393 | |
edd01519 SC |
394 | x = read_memory_integer (a, code_size); |
395 | if (code_size == 2) | |
396 | { | |
397 | /* Stick current code segement onto top */ | |
398 | x &= 0xffff; | |
399 | x |= read_register (SEG_C_REGNUM) << 16; | |
400 | } | |
401 | x &= 0xffffff; | |
195e46ea SC |
402 | return x; |
403 | } | |
404 | ||
195e46ea SC |
405 | void |
406 | h8500_set_pointer_size (newsize) | |
407 | int newsize; | |
408 | { | |
409 | static int oldsize = 0; | |
410 | ||
411 | if (oldsize != newsize) | |
412 | { | |
199b2450 | 413 | printf_unfiltered ("pointer size set to %d bits\n", newsize); |
195e46ea SC |
414 | oldsize = newsize; |
415 | if (newsize == 32) | |
416 | { | |
417 | minimum_mode = 0; | |
418 | } | |
419 | else | |
420 | { | |
421 | minimum_mode = 1; | |
422 | } | |
423 | _initialize_gdbtypes (); | |
424 | } | |
425 | } | |
426 | ||
ec7b6fcf SS |
427 | static void |
428 | big_command () | |
429 | { | |
430 | h8500_set_pointer_size (32); | |
431 | code_size = 4; | |
432 | data_size = 4; | |
433 | } | |
195e46ea | 434 | |
ec7b6fcf SS |
435 | static void |
436 | medium_command () | |
437 | { | |
438 | h8500_set_pointer_size (32); | |
439 | code_size = 4; | |
440 | data_size = 2; | |
441 | } | |
195e46ea | 442 | |
ec7b6fcf SS |
443 | static void |
444 | compact_command () | |
445 | { | |
446 | h8500_set_pointer_size (32); | |
447 | code_size = 2; | |
448 | data_size = 4; | |
449 | } | |
195e46ea | 450 | |
ec7b6fcf SS |
451 | static void |
452 | small_command () | |
453 | { | |
454 | h8500_set_pointer_size (16); | |
455 | code_size = 2; | |
456 | data_size = 2; | |
457 | } | |
195e46ea | 458 | |
ec7b6fcf | 459 | static struct cmd_list_element *setmemorylist; |
195e46ea SC |
460 | |
461 | static void | |
462 | set_memory (args, from_tty) | |
463 | char *args; | |
464 | int from_tty; | |
465 | { | |
199b2450 TL |
466 | printf_unfiltered ("\"set memory\" must be followed by the name of a memory subcommand.\n"); |
467 | help_list (setmemorylist, "set memory ", -1, gdb_stdout); | |
195e46ea SC |
468 | } |
469 | ||
ccf1e898 | 470 | /* See if variable name is ppc or pr[0-7] */ |
195e46ea | 471 | |
ccf1e898 SG |
472 | int |
473 | h8500_is_trapped_internalvar (name) | |
474 | char *name; | |
475 | { | |
476 | if (name[0] != 'p') | |
477 | return 0; | |
478 | ||
85e07872 | 479 | if (strcmp (name + 1, "pc") == 0) |
ccf1e898 SG |
480 | return 1; |
481 | ||
482 | if (name[1] == 'r' | |
483 | && name[2] >= '0' | |
484 | && name[2] <= '7' | |
485 | && name[3] == '\000') | |
486 | return 1; | |
487 | else | |
488 | return 0; | |
489 | } | |
490 | ||
63eef03a | 491 | value_ptr |
ccf1e898 SG |
492 | h8500_value_of_trapped_internalvar (var) |
493 | struct internalvar *var; | |
494 | { | |
495 | LONGEST regval; | |
496 | unsigned char regbuf[4]; | |
497 | int page_regnum, regnum; | |
498 | ||
499 | regnum = var->name[2] == 'c' ? PC_REGNUM : var->name[2] - '0'; | |
500 | ||
501 | switch (var->name[2]) | |
502 | { | |
503 | case 'c': | |
504 | page_regnum = SEG_C_REGNUM; | |
505 | break; | |
85e07872 SC |
506 | case '0': |
507 | case '1': | |
508 | case '2': | |
509 | case '3': | |
ccf1e898 SG |
510 | page_regnum = SEG_D_REGNUM; |
511 | break; | |
85e07872 SC |
512 | case '4': |
513 | case '5': | |
ccf1e898 SG |
514 | page_regnum = SEG_E_REGNUM; |
515 | break; | |
85e07872 SC |
516 | case '6': |
517 | case '7': | |
ccf1e898 SG |
518 | page_regnum = SEG_T_REGNUM; |
519 | break; | |
520 | } | |
521 | ||
522 | get_saved_register (regbuf, NULL, NULL, selected_frame, page_regnum, NULL); | |
523 | regval = regbuf[0] << 16; | |
524 | ||
525 | get_saved_register (regbuf, NULL, NULL, selected_frame, regnum, NULL); | |
526 | regval |= regbuf[0] << 8 | regbuf[1]; /* XXX host/target byte order */ | |
527 | ||
528 | free (var->value); /* Free up old value */ | |
529 | ||
530 | var->value = value_from_longest (builtin_type_unsigned_long, regval); | |
531 | release_value (var->value); /* Unchain new value */ | |
532 | ||
533 | VALUE_LVAL (var->value) = lval_internalvar; | |
534 | VALUE_INTERNALVAR (var->value) = var; | |
535 | return var->value; | |
536 | } | |
537 | ||
538 | void | |
539 | h8500_set_trapped_internalvar (var, newval, bitpos, bitsize, offset) | |
540 | struct internalvar *var; | |
541 | int offset, bitpos, bitsize; | |
63eef03a | 542 | value_ptr newval; |
195e46ea | 543 | { |
ccf1e898 SG |
544 | char *page_regnum, *regnum; |
545 | char expression[100]; | |
546 | unsigned new_regval; | |
547 | struct type *type; | |
548 | enum type_code newval_type_code; | |
549 | ||
940d5967 | 550 | type = check_typedef (VALUE_TYPE (newval)); |
ccf1e898 SG |
551 | newval_type_code = TYPE_CODE (type); |
552 | ||
553 | if ((newval_type_code != TYPE_CODE_INT | |
554 | && newval_type_code != TYPE_CODE_PTR) | |
85e07872 SC |
555 | || TYPE_LENGTH (type) != sizeof (new_regval)) |
556 | error ("Illegal type (%s) for assignment to $%s\n", | |
940d5967 | 557 | TYPE_NAME (VALUE_TYPE (newval)), var->name); |
195e46ea | 558 | |
85e07872 | 559 | new_regval = *(long *) VALUE_CONTENTS_RAW (newval); |
ccf1e898 SG |
560 | |
561 | regnum = var->name + 1; | |
562 | ||
563 | switch (var->name[2]) | |
564 | { | |
565 | case 'c': | |
566 | page_regnum = "cp"; | |
567 | break; | |
85e07872 SC |
568 | case '0': |
569 | case '1': | |
570 | case '2': | |
571 | case '3': | |
ccf1e898 SG |
572 | page_regnum = "dp"; |
573 | break; | |
85e07872 SC |
574 | case '4': |
575 | case '5': | |
ccf1e898 SG |
576 | page_regnum = "ep"; |
577 | break; | |
85e07872 SC |
578 | case '6': |
579 | case '7': | |
ccf1e898 SG |
580 | page_regnum = "tp"; |
581 | break; | |
582 | } | |
583 | ||
584 | sprintf (expression, "$%s=%d", page_regnum, new_regval >> 16); | |
85e07872 | 585 | parse_and_eval (expression); |
ccf1e898 SG |
586 | |
587 | sprintf (expression, "$%s=%d", regnum, new_regval & 0xffff); | |
85e07872 | 588 | parse_and_eval (expression); |
ccf1e898 SG |
589 | } |
590 | ||
85e07872 | 591 | CORE_ADDR |
f4eb9968 | 592 | h8500_read_sp () |
85e07872 | 593 | { |
08c0d7b8 | 594 | return read_register (PR7_REGNUM); |
85e07872 SC |
595 | } |
596 | ||
597 | void | |
f4eb9968 | 598 | h8500_write_sp (v) |
85e07872 SC |
599 | CORE_ADDR v; |
600 | { | |
08c0d7b8 | 601 | write_register (PR7_REGNUM, v); |
85e07872 SC |
602 | } |
603 | ||
604 | CORE_ADDR | |
f4eb9968 SS |
605 | h8500_read_pc (pid) |
606 | int pid; | |
85e07872 | 607 | { |
08c0d7b8 | 608 | return read_register (PC_REGNUM); |
85e07872 SC |
609 | } |
610 | ||
611 | void | |
f4eb9968 | 612 | h8500_write_pc (v, pid) |
85e07872 | 613 | CORE_ADDR v; |
f4eb9968 | 614 | int pid; |
85e07872 | 615 | { |
08c0d7b8 | 616 | write_register (PC_REGNUM, v); |
85e07872 SC |
617 | } |
618 | ||
619 | CORE_ADDR | |
f4eb9968 | 620 | h8500_read_fp () |
85e07872 | 621 | { |
08c0d7b8 | 622 | return read_register (PR6_REGNUM); |
85e07872 SC |
623 | } |
624 | ||
625 | void | |
f4eb9968 | 626 | h8500_write_fp (v) |
85e07872 SC |
627 | CORE_ADDR v; |
628 | { | |
08c0d7b8 | 629 | write_register (PR6_REGNUM, v); |
85e07872 | 630 | } |
1468bec9 | 631 | |
18b46e7c SS |
632 | void |
633 | _initialize_h8500_tdep () | |
634 | { | |
ec7b6fcf SS |
635 | tm_print_insn = print_insn_h8500; |
636 | ||
637 | add_prefix_cmd ("memory", no_class, set_memory, | |
638 | "set the memory model", &setmemorylist, "set memory ", 0, | |
639 | &setlist); | |
640 | ||
641 | add_cmd ("small", class_support, small_command, | |
642 | "Set small memory model. (16 bit code, 16 bit data)", &setmemorylist); | |
643 | ||
644 | add_cmd ("big", class_support, big_command, | |
645 | "Set big memory model. (32 bit code, 32 bit data)", &setmemorylist); | |
646 | ||
647 | add_cmd ("medium", class_support, medium_command, | |
648 | "Set medium memory model. (32 bit code, 16 bit data)", &setmemorylist); | |
649 | ||
650 | add_cmd ("compact", class_support, compact_command, | |
651 | "Set compact memory model. (16 bit code, 32 bit data)", &setmemorylist); | |
652 | ||
18b46e7c | 653 | } |