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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [sh-tdep.c] - Blame information for rev 258

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1 24 jeremybenn 
/* Target-dependent code for Renesas Super-H, for GDB.
2 
 
3 
   Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 
   2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
5 
 
6 
   This file is part of GDB.
7 
 
8 
   This program is free software; you can redistribute it and/or modify
9 
   it under the terms of the GNU General Public License as published by
10 
   the Free Software Foundation; either version 3 of the License, or
11 
   (at your option) any later version.
12 
 
13 
   This program is distributed in the hope that it will be useful,
14 
   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 
   GNU General Public License for more details.
17 
 
18 
   You should have received a copy of the GNU General Public License
19 
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20 
 
21 
/*
22 
   Contributed by Steve Chamberlain
23 
   sac@cygnus.com
24 
 */
25 
 
26 
#include "defs.h"
27 
#include "frame.h"
28 
#include "frame-base.h"
29 
#include "frame-unwind.h"
30 
#include "dwarf2-frame.h"
31 
#include "symtab.h"
32 
#include "gdbtypes.h"
33 
#include "gdbcmd.h"
34 
#include "gdbcore.h"
35 
#include "value.h"
36 
#include "dis-asm.h"
37 
#include "inferior.h"
38 
#include "gdb_string.h"
39 
#include "gdb_assert.h"
40 
#include "arch-utils.h"
41 
#include "floatformat.h"
42 
#include "regcache.h"
43 
#include "doublest.h"
44 
#include "osabi.h"
45 
#include "reggroups.h"
46 
 
47 
#include "sh-tdep.h"
48 
 
49 
#include "elf-bfd.h"
50 
#include "solib-svr4.h"
51 
 
52 
/* sh flags */
53 
#include "elf/sh.h"
54 
/* registers numbers shared with the simulator */
55 
#include "gdb/sim-sh.h"
56 
 
57 
static void (*sh_show_regs) (struct frame_info *);
58 
 
59 
#define SH_NUM_REGS 67
60 
 
61 
struct sh_frame_cache
62 
{
63 
  /* Base address.  */
64 
  CORE_ADDR base;
65 
  LONGEST sp_offset;
66 
  CORE_ADDR pc;
67 
 
68 
  /* Flag showing that a frame has been created in the prologue code. */
69 
  int uses_fp;
70 
 
71 
  /* Saved registers.  */
72 
  CORE_ADDR saved_regs[SH_NUM_REGS];
73 
  CORE_ADDR saved_sp;
74 
};
75 
 
76 
static const char *
77 
sh_sh_register_name (struct gdbarch *gdbarch, int reg_nr)
78 
{
79 
  static char *register_names[] = {
80 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
81 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
82 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
83 
    "", "",
84 
    "", "", "", "", "", "", "", "",
85 
    "", "", "", "", "", "", "", "",
86 
    "", "",
87 
    "", "", "", "", "", "", "", "",
88 
    "", "", "", "", "", "", "", "",
89 
    "", "", "", "", "", "", "", "",
90 
  };
91 
  if (reg_nr < 0)
92 
    return NULL;
93 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
94 
    return NULL;
95 
  return register_names[reg_nr];
96 
}
97 
 
98 
static const char *
99 
sh_sh3_register_name (struct gdbarch *gdbarch, int reg_nr)
100 
{
101 
  static char *register_names[] = {
102 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
103 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
104 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
105 
    "", "",
106 
    "", "", "", "", "", "", "", "",
107 
    "", "", "", "", "", "", "", "",
108 
    "ssr", "spc",
109 
    "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
110 
    "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1"
111 
    "", "", "", "", "", "", "", "",
112 
  };
113 
  if (reg_nr < 0)
114 
    return NULL;
115 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
116 
    return NULL;
117 
  return register_names[reg_nr];
118 
}
119 
 
120 
static const char *
121 
sh_sh3e_register_name (struct gdbarch *gdbarch, int reg_nr)
122 
{
123 
  static char *register_names[] = {
124 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
125 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
126 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
127 
    "fpul", "fpscr",
128 
    "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
129 
    "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
130 
    "ssr", "spc",
131 
    "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
132 
    "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
133 
    "", "", "", "", "", "", "", "",
134 
  };
135 
  if (reg_nr < 0)
136 
    return NULL;
137 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
138 
    return NULL;
139 
  return register_names[reg_nr];
140 
}
141 
 
142 
static const char *
143 
sh_sh2e_register_name (struct gdbarch *gdbarch, int reg_nr)
144 
{
145 
  static char *register_names[] = {
146 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
147 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
148 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
149 
    "fpul", "fpscr",
150 
    "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
151 
    "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
152 
    "", "",
153 
    "", "", "", "", "", "", "", "",
154 
    "", "", "", "", "", "", "", "",
155 
    "", "", "", "", "", "", "", "",
156 
  };
157 
  if (reg_nr < 0)
158 
    return NULL;
159 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
160 
    return NULL;
161 
  return register_names[reg_nr];
162 
}
163 
 
164 
static const char *
165 
sh_sh2a_register_name (struct gdbarch *gdbarch, int reg_nr)
166 
{
167 
  static char *register_names[] = {
168 
    /* general registers 0-15 */
169 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
170 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
171 
    /* 16 - 22 */
172 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
173 
    /* 23, 24 */
174 
    "fpul", "fpscr",
175 
    /* floating point registers 25 - 40 */
176 
    "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
177 
    "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
178 
    /* 41, 42 */
179 
    "", "",
180 
    /* 43 - 62.  Banked registers.  The bank number used is determined by
181 
       the bank register (63). */
182 
    "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
183 
    "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b",
184 
    "machb", "ivnb", "prb", "gbrb", "maclb",
185 
    /* 63: register bank number, not a real register but used to
186 
       communicate the register bank currently get/set.  This register
187 
       is hidden to the user, who manipulates it using the pseudo
188 
       register called "bank" (67).  See below.  */
189 
    "",
190 
    /* 64 - 66 */
191 
    "ibcr", "ibnr", "tbr",
192 
    /* 67: register bank number, the user visible pseudo register.  */
193 
    "bank",
194 
    /* double precision (pseudo) 68 - 75 */
195 
    "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
196 
  };
197 
  if (reg_nr < 0)
198 
    return NULL;
199 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
200 
    return NULL;
201 
  return register_names[reg_nr];
202 
}
203 
 
204 
static const char *
205 
sh_sh2a_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr)
206 
{
207 
  static char *register_names[] = {
208 
    /* general registers 0-15 */
209 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
210 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
211 
    /* 16 - 22 */
212 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
213 
    /* 23, 24 */
214 
    "", "",
215 
    /* floating point registers 25 - 40 */
216 
    "", "", "", "", "", "", "", "",
217 
    "", "", "", "", "", "", "", "",
218 
    /* 41, 42 */
219 
    "", "",
220 
    /* 43 - 62.  Banked registers.  The bank number used is determined by
221 
       the bank register (63). */
222 
    "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
223 
    "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b",
224 
    "machb", "ivnb", "prb", "gbrb", "maclb",
225 
    /* 63: register bank number, not a real register but used to
226 
       communicate the register bank currently get/set.  This register
227 
       is hidden to the user, who manipulates it using the pseudo
228 
       register called "bank" (67).  See below.  */
229 
    "",
230 
    /* 64 - 66 */
231 
    "ibcr", "ibnr", "tbr",
232 
    /* 67: register bank number, the user visible pseudo register.  */
233 
    "bank",
234 
    /* double precision (pseudo) 68 - 75 */
235 
    "", "", "", "", "", "", "", "",
236 
  };
237 
  if (reg_nr < 0)
238 
    return NULL;
239 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
240 
    return NULL;
241 
  return register_names[reg_nr];
242 
}
243 
 
244 
static const char *
245 
sh_sh_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
246 
{
247 
  static char *register_names[] = {
248 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
249 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
250 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
251 
    "", "dsr",
252 
    "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
253 
    "y0", "y1", "", "", "", "", "", "mod",
254 
    "", "",
255 
    "rs", "re", "", "", "", "", "", "",
256 
    "", "", "", "", "", "", "", "",
257 
    "", "", "", "", "", "", "", "",
258 
  };
259 
  if (reg_nr < 0)
260 
    return NULL;
261 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
262 
    return NULL;
263 
  return register_names[reg_nr];
264 
}
265 
 
266 
static const char *
267 
sh_sh3_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
268 
{
269 
  static char *register_names[] = {
270 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
271 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
272 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
273 
    "", "dsr",
274 
    "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
275 
    "y0", "y1", "", "", "", "", "", "mod",
276 
    "ssr", "spc",
277 
    "rs", "re", "", "", "", "", "", "",
278 
    "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
279 
    "", "", "", "", "", "", "", "",
280 
    "", "", "", "", "", "", "", "",
281 
  };
282 
  if (reg_nr < 0)
283 
    return NULL;
284 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
285 
    return NULL;
286 
  return register_names[reg_nr];
287 
}
288 
 
289 
static const char *
290 
sh_sh4_register_name (struct gdbarch *gdbarch, int reg_nr)
291 
{
292 
  static char *register_names[] = {
293 
    /* general registers 0-15 */
294 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
295 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
296 
    /* 16 - 22 */
297 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
298 
    /* 23, 24 */
299 
    "fpul", "fpscr",
300 
    /* floating point registers 25 - 40 */
301 
    "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
302 
    "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
303 
    /* 41, 42 */
304 
    "ssr", "spc",
305 
    /* bank 0 43 - 50 */
306 
    "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
307 
    /* bank 1 51 - 58 */
308 
    "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
309 
    "", "", "", "", "", "", "", "",
310 
    /* pseudo bank register. */
311 
    "",
312 
    /* double precision (pseudo) 59 - 66 */
313 
    "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
314 
    /* vectors (pseudo) 67 - 70 */
315 
    "fv0", "fv4", "fv8", "fv12",
316 
    /* FIXME: missing XF 71 - 86 */
317 
    /* FIXME: missing XD 87 - 94 */
318 
  };
319 
  if (reg_nr < 0)
320 
    return NULL;
321 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
322 
    return NULL;
323 
  return register_names[reg_nr];
324 
}
325 
 
326 
static const char *
327 
sh_sh4_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr)
328 
{
329 
  static char *register_names[] = {
330 
    /* general registers 0-15 */
331 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
332 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
333 
    /* 16 - 22 */
334 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
335 
    /* 23, 24 */
336 
    "", "",
337 
    /* floating point registers 25 - 40 -- not for nofpu target */
338 
    "", "", "", "", "", "", "", "",
339 
    "", "", "", "", "", "", "", "",
340 
    /* 41, 42 */
341 
    "ssr", "spc",
342 
    /* bank 0 43 - 50 */
343 
    "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
344 
    /* bank 1 51 - 58 */
345 
    "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
346 
    "", "", "", "", "", "", "", "",
347 
    /* pseudo bank register. */
348 
    "",
349 
    /* double precision (pseudo) 59 - 66 -- not for nofpu target */
350 
    "", "", "", "", "", "", "", "",
351 
    /* vectors (pseudo) 67 - 70 -- not for nofpu target */
352 
    "", "", "", "",
353 
  };
354 
  if (reg_nr < 0)
355 
    return NULL;
356 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
357 
    return NULL;
358 
  return register_names[reg_nr];
359 
}
360 
 
361 
static const char *
362 
sh_sh4al_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
363 
{
364 
  static char *register_names[] = {
365 
    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
366 
    "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
367 
    "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
368 
    "", "dsr",
369 
    "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
370 
    "y0", "y1", "", "", "", "", "", "mod",
371 
    "ssr", "spc",
372 
    "rs", "re", "", "", "", "", "", "",
373 
    "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
374 
    "", "", "", "", "", "", "", "",
375 
    "", "", "", "", "", "", "", "",
376 
  };
377 
  if (reg_nr < 0)
378 
    return NULL;
379 
  if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
380 
    return NULL;
381 
  return register_names[reg_nr];
382 
}
383 
 
384 
static const unsigned char *
385 
sh_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr)
386 
{
387 
  /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */
388 
  static unsigned char breakpoint[] = { 0xc3, 0xc3 };
389 
 
390 
  /* For remote stub targets, trapa #20 is used.  */
391 
  if (strcmp (target_shortname, "remote") == 0)
392 
    {
393 
      static unsigned char big_remote_breakpoint[] = { 0xc3, 0x20 };
394 
      static unsigned char little_remote_breakpoint[] = { 0x20, 0xc3 };
395 
 
396 
      if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
397 
        {
398 
          *lenptr = sizeof (big_remote_breakpoint);
399 
          return big_remote_breakpoint;
400 
        }
401 
      else
402 
        {
403 
          *lenptr = sizeof (little_remote_breakpoint);
404 
          return little_remote_breakpoint;
405 
        }
406 
    }
407 
 
408 
  *lenptr = sizeof (breakpoint);
409 
  return breakpoint;
410 
}
411 
 
412 
/* Prologue looks like
413 
   mov.l        r14,@-r15
414 
   sts.l        pr,@-r15
415 
   mov.l        <regs>,@-r15
416 
   sub          <room_for_loca_vars>,r15
417 
   mov          r15,r14
418 
 
419 
   Actually it can be more complicated than this but that's it, basically.
420 
 */
421 
 
422 
#define GET_SOURCE_REG(x)       (((x) >> 4) & 0xf)
423 
#define GET_TARGET_REG(x)       (((x) >> 8) & 0xf)
424 
 
425 
/* JSR @Rm         0100mmmm00001011 */
426 
#define IS_JSR(x)               (((x) & 0xf0ff) == 0x400b)
427 
 
428 
/* STS.L PR,@-r15  0100111100100010
429 
   r15-4-->r15, PR-->(r15) */
430 
#define IS_STS(x)               ((x) == 0x4f22)
431 
 
432 
/* STS.L MACL,@-r15  0100111100010010
433 
   r15-4-->r15, MACL-->(r15) */
434 
#define IS_MACL_STS(x)          ((x) == 0x4f12)
435 
 
436 
/* MOV.L Rm,@-r15  00101111mmmm0110
437 
   r15-4-->r15, Rm-->(R15) */
438 
#define IS_PUSH(x)              (((x) & 0xff0f) == 0x2f06)
439 
 
440 
/* MOV r15,r14     0110111011110011
441 
   r15-->r14  */
442 
#define IS_MOV_SP_FP(x)         ((x) == 0x6ef3)
443 
 
444 
/* ADD #imm,r15    01111111iiiiiiii
445 
   r15+imm-->r15 */
446 
#define IS_ADD_IMM_SP(x)        (((x) & 0xff00) == 0x7f00)
447 
 
448 
#define IS_MOV_R3(x)            (((x) & 0xff00) == 0x1a00)
449 
#define IS_SHLL_R3(x)           ((x) == 0x4300)
450 
 
451 
/* ADD r3,r15      0011111100111100
452 
   r15+r3-->r15 */
453 
#define IS_ADD_R3SP(x)          ((x) == 0x3f3c)
454 
 
455 
/* FMOV.S FRm,@-Rn  Rn-4-->Rn, FRm-->(Rn)     1111nnnnmmmm1011
456 
   FMOV DRm,@-Rn    Rn-8-->Rn, DRm-->(Rn)     1111nnnnmmm01011
457 
   FMOV XDm,@-Rn    Rn-8-->Rn, XDm-->(Rn)     1111nnnnmmm11011 */
458 
/* CV, 2003-08-28: Only suitable with Rn == SP, therefore name changed to
459 
                   make this entirely clear. */
460 
/* #define IS_FMOV(x)           (((x) & 0xf00f) == 0xf00b) */
461 
#define IS_FPUSH(x)             (((x) & 0xff0f) == 0xff0b)
462 
 
463 
/* MOV Rm,Rn          Rm-->Rn        0110nnnnmmmm0011  4 <= m <= 7 */
464 
#define IS_MOV_ARG_TO_REG(x) \
465 
        (((x) & 0xf00f) == 0x6003 && \
466 
         ((x) & 0x00f0) >= 0x0040 && \
467 
         ((x) & 0x00f0) <= 0x0070)
468 
/* MOV.L Rm,@Rn               0010nnnnmmmm0010  n = 14, 4 <= m <= 7 */
469 
#define IS_MOV_ARG_TO_IND_R14(x) \
470 
        (((x) & 0xff0f) == 0x2e02 && \
471 
         ((x) & 0x00f0) >= 0x0040 && \
472 
         ((x) & 0x00f0) <= 0x0070)
473 
/* MOV.L Rm,@(disp*4,Rn)      00011110mmmmdddd  n = 14, 4 <= m <= 7 */
474 
#define IS_MOV_ARG_TO_IND_R14_WITH_DISP(x) \
475 
        (((x) & 0xff00) == 0x1e00 && \
476 
         ((x) & 0x00f0) >= 0x0040 && \
477 
         ((x) & 0x00f0) <= 0x0070)
478 
 
479 
/* MOV.W @(disp*2,PC),Rn      1001nnnndddddddd */
480 
#define IS_MOVW_PCREL_TO_REG(x) (((x) & 0xf000) == 0x9000)
481 
/* MOV.L @(disp*4,PC),Rn      1101nnnndddddddd */
482 
#define IS_MOVL_PCREL_TO_REG(x) (((x) & 0xf000) == 0xd000)
483 
/* MOVI20 #imm20,Rn           0000nnnniiii0000 */
484 
#define IS_MOVI20(x)            (((x) & 0xf00f) == 0x0000)
485 
/* SUB Rn,R15                 00111111nnnn1000 */
486 
#define IS_SUB_REG_FROM_SP(x)   (((x) & 0xff0f) == 0x3f08)
487 
 
488 
#define FPSCR_SZ                (1 << 20)
489 
 
490 
/* The following instructions are used for epilogue testing. */
491 
#define IS_RESTORE_FP(x)        ((x) == 0x6ef6)
492 
#define IS_RTS(x)               ((x) == 0x000b)
493 
#define IS_LDS(x)               ((x) == 0x4f26)
494 
#define IS_MACL_LDS(x)          ((x) == 0x4f16)
495 
#define IS_MOV_FP_SP(x)         ((x) == 0x6fe3)
496 
#define IS_ADD_REG_TO_FP(x)     (((x) & 0xff0f) == 0x3e0c)
497 
#define IS_ADD_IMM_FP(x)        (((x) & 0xff00) == 0x7e00)
498 
 
499 
/* Disassemble an instruction.  */
500 
static int
501 
gdb_print_insn_sh (bfd_vma memaddr, disassemble_info * info)
502 
{
503 
  info->endian = gdbarch_byte_order (current_gdbarch);
504 
  return print_insn_sh (memaddr, info);
505 
}
506 
 
507 
static CORE_ADDR
508 
sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
509 
                     struct sh_frame_cache *cache, ULONGEST fpscr)
510 
{
511 
  ULONGEST inst;
512 
  CORE_ADDR opc;
513 
  int offset;
514 
  int sav_offset = 0;
515 
  int r3_val = 0;
516 
  int reg, sav_reg = -1;
517 
 
518 
  if (pc >= current_pc)
519 
    return current_pc;
520 
 
521 
  cache->uses_fp = 0;
522 
  for (opc = pc + (2 * 28); pc < opc; pc += 2)
523 
    {
524 
      inst = read_memory_unsigned_integer (pc, 2);
525 
      /* See where the registers will be saved to */
526 
      if (IS_PUSH (inst))
527 
        {
528 
          cache->saved_regs[GET_SOURCE_REG (inst)] = cache->sp_offset;
529 
          cache->sp_offset += 4;
530 
        }
531 
      else if (IS_STS (inst))
532 
        {
533 
          cache->saved_regs[PR_REGNUM] = cache->sp_offset;
534 
          cache->sp_offset += 4;
535 
        }
536 
      else if (IS_MACL_STS (inst))
537 
        {
538 
          cache->saved_regs[MACL_REGNUM] = cache->sp_offset;
539 
          cache->sp_offset += 4;
540 
        }
541 
      else if (IS_MOV_R3 (inst))
542 
        {
543 
          r3_val = ((inst & 0xff) ^ 0x80) - 0x80;
544 
        }
545 
      else if (IS_SHLL_R3 (inst))
546 
        {
547 
          r3_val <<= 1;
548 
        }
549 
      else if (IS_ADD_R3SP (inst))
550 
        {
551 
          cache->sp_offset += -r3_val;
552 
        }
553 
      else if (IS_ADD_IMM_SP (inst))
554 
        {
555 
          offset = ((inst & 0xff) ^ 0x80) - 0x80;
556 
          cache->sp_offset -= offset;
557 
        }
558 
      else if (IS_MOVW_PCREL_TO_REG (inst))
559 
        {
560 
          if (sav_reg < 0)
561 
            {
562 
              reg = GET_TARGET_REG (inst);
563 
              if (reg < 14)
564 
                {
565 
                  sav_reg = reg;
566 
                  offset = (inst & 0xff) << 1;
567 
                  sav_offset =
568 
                    read_memory_integer ((pc + 4) + offset, 2);
569 
                }
570 
            }
571 
        }
572 
      else if (IS_MOVL_PCREL_TO_REG (inst))
573 
        {
574 
          if (sav_reg < 0)
575 
            {
576 
              reg = GET_TARGET_REG (inst);
577 
              if (reg < 14)
578 
                {
579 
                  sav_reg = reg;
580 
                  offset = (inst & 0xff) << 2;
581 
                  sav_offset =
582 
                    read_memory_integer (((pc & 0xfffffffc) + 4) + offset, 4);
583 
                }
584 
            }
585 
        }
586 
      else if (IS_MOVI20 (inst))
587 
        {
588 
          if (sav_reg < 0)
589 
            {
590 
              reg = GET_TARGET_REG (inst);
591 
              if (reg < 14)
592 
                {
593 
                  sav_reg = reg;
594 
                  sav_offset = GET_SOURCE_REG (inst) << 16;
595 
                  /* MOVI20 is a 32 bit instruction! */
596 
                  pc += 2;
597 
                  sav_offset |= read_memory_unsigned_integer (pc, 2);
598 
                  /* Now sav_offset contains an unsigned 20 bit value.
599 
                     It must still get sign extended.  */
600 
                  if (sav_offset & 0x00080000)
601 
                    sav_offset |= 0xfff00000;
602 
                }
603 
            }
604 
        }
605 
      else if (IS_SUB_REG_FROM_SP (inst))
606 
        {
607 
          reg = GET_SOURCE_REG (inst);
608 
          if (sav_reg > 0 && reg == sav_reg)
609 
            {
610 
              sav_reg = -1;
611 
            }
612 
          cache->sp_offset += sav_offset;
613 
        }
614 
      else if (IS_FPUSH (inst))
615 
        {
616 
          if (fpscr & FPSCR_SZ)
617 
            {
618 
              cache->sp_offset += 8;
619 
            }
620 
          else
621 
            {
622 
              cache->sp_offset += 4;
623 
            }
624 
        }
625 
      else if (IS_MOV_SP_FP (inst))
626 
        {
627 
          cache->uses_fp = 1;
628 
          /* At this point, only allow argument register moves to other
629 
             registers or argument register moves to @(X,fp) which are
630 
             moving the register arguments onto the stack area allocated
631 
             by a former add somenumber to SP call.  Don't allow moving
632 
             to an fp indirect address above fp + cache->sp_offset. */
633 
          pc += 2;
634 
          for (opc = pc + 12; pc < opc; pc += 2)
635 
            {
636 
              inst = read_memory_integer (pc, 2);
637 
              if (IS_MOV_ARG_TO_IND_R14 (inst))
638 
                {
639 
                  reg = GET_SOURCE_REG (inst);
640 
                  if (cache->sp_offset > 0)
641 
                    cache->saved_regs[reg] = cache->sp_offset;
642 
                }
643 
              else if (IS_MOV_ARG_TO_IND_R14_WITH_DISP (inst))
644 
                {
645 
                  reg = GET_SOURCE_REG (inst);
646 
                  offset = (inst & 0xf) * 4;
647 
                  if (cache->sp_offset > offset)
648 
                    cache->saved_regs[reg] = cache->sp_offset - offset;
649 
                }
650 
              else if (IS_MOV_ARG_TO_REG (inst))
651 
                continue;
652 
              else
653 
                break;
654 
            }
655 
          break;
656 
        }
657 
      else if (IS_JSR (inst))
658 
        {
659 
          /* We have found a jsr that has been scheduled into the prologue.
660 
             If we continue the scan and return a pc someplace after this,
661 
             then setting a breakpoint on this function will cause it to
662 
             appear to be called after the function it is calling via the
663 
             jsr, which will be very confusing.  Most likely the next
664 
             instruction is going to be IS_MOV_SP_FP in the delay slot.  If
665 
             so, note that before returning the current pc. */
666 
          inst = read_memory_integer (pc + 2, 2);
667 
          if (IS_MOV_SP_FP (inst))
668 
            cache->uses_fp = 1;
669 
          break;
670 
        }
671 
#if 0                           /* This used to just stop when it found an instruction that
672 
                                   was not considered part of the prologue.  Now, we just
673 
                                   keep going looking for likely instructions. */
674 
      else
675 
        break;
676 
#endif
677 
    }
678 
 
679 
  return pc;
680 
}
681 
 
682 
/* Skip any prologue before the guts of a function */
683 
 
684 
/* Skip the prologue using the debug information. If this fails we'll
685 
   fall back on the 'guess' method below. */
686 
static CORE_ADDR
687 
after_prologue (CORE_ADDR pc)
688 
{
689 
  struct symtab_and_line sal;
690 
  CORE_ADDR func_addr, func_end;
691 
 
692 
  /* If we can not find the symbol in the partial symbol table, then
693 
     there is no hope we can determine the function's start address
694 
     with this code.  */
695 
  if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
696 
    return 0;
697 
 
698 
  /* Get the line associated with FUNC_ADDR.  */
699 
  sal = find_pc_line (func_addr, 0);
700 
 
701 
  /* There are only two cases to consider.  First, the end of the source line
702 
     is within the function bounds.  In that case we return the end of the
703 
     source line.  Second is the end of the source line extends beyond the
704 
     bounds of the current function.  We need to use the slow code to
705 
     examine instructions in that case.  */
706 
  if (sal.end < func_end)
707 
    return sal.end;
708 
  else
709 
    return 0;
710 
}
711 
 
712 
static CORE_ADDR
713 
sh_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
714 
{
715 
  CORE_ADDR pc;
716 
  struct sh_frame_cache cache;
717 
 
718 
  /* See if we can determine the end of the prologue via the symbol table.
719 
     If so, then return either PC, or the PC after the prologue, whichever
720 
     is greater.  */
721 
  pc = after_prologue (start_pc);
722 
 
723 
  /* If after_prologue returned a useful address, then use it.  Else
724 
     fall back on the instruction skipping code. */
725 
  if (pc)
726 
    return max (pc, start_pc);
727 
 
728 
  cache.sp_offset = -4;
729 
  pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache, 0);
730 
  if (!cache.uses_fp)
731 
    return start_pc;
732 
 
733 
  return pc;
734 
}
735 
 
736 
/* The ABI says:
737 
 
738 
   Aggregate types not bigger than 8 bytes that have the same size and
739 
   alignment as one of the integer scalar types are returned in the
740 
   same registers as the integer type they match.
741 
 
742 
   For example, a 2-byte aligned structure with size 2 bytes has the
743 
   same size and alignment as a short int, and will be returned in R0.
744 
   A 4-byte aligned structure with size 8 bytes has the same size and
745 
   alignment as a long long int, and will be returned in R0 and R1.
746 
 
747 
   When an aggregate type is returned in R0 and R1, R0 contains the
748 
   first four bytes of the aggregate, and R1 contains the
749 
   remainder. If the size of the aggregate type is not a multiple of 4
750 
   bytes, the aggregate is tail-padded up to a multiple of 4
751 
   bytes. The value of the padding is undefined. For little-endian
752 
   targets the padding will appear at the most significant end of the
753 
   last element, for big-endian targets the padding appears at the
754 
   least significant end of the last element.
755 
 
756 
   All other aggregate types are returned by address. The caller
757 
   function passes the address of an area large enough to hold the
758 
   aggregate value in R2. The called function stores the result in
759 
   this location.
760 
 
761 
   To reiterate, structs smaller than 8 bytes could also be returned
762 
   in memory, if they don't pass the "same size and alignment as an
763 
   integer type" rule.
764 
 
765 
   For example, in
766 
 
767 
   struct s { char c[3]; } wibble;
768 
   struct s foo(void) {  return wibble; }
769 
 
770 
   the return value from foo() will be in memory, not
771 
   in R0, because there is no 3-byte integer type.
772 
 
773 
   Similarly, in
774 
 
775 
   struct s { char c[2]; } wibble;
776 
   struct s foo(void) {  return wibble; }
777 
 
778 
   because a struct containing two chars has alignment 1, that matches
779 
   type char, but size 2, that matches type short.  There's no integer
780 
   type that has alignment 1 and size 2, so the struct is returned in
781 
   memory.
782 
 
783 
*/
784 
 
785 
static int
786 
sh_use_struct_convention (int gcc_p, struct type *type)
787 
{
788 
  int len = TYPE_LENGTH (type);
789 
  int nelem = TYPE_NFIELDS (type);
790 
 
791 
  /* Non-power of 2 length types and types bigger than 8 bytes (which don't
792 
     fit in two registers anyway) use struct convention.  */
793 
  if (len != 1 && len != 2 && len != 4 && len != 8)
794 
    return 1;
795 
 
796 
  /* Scalar types and aggregate types with exactly one field are aligned
797 
     by definition.  They are returned in registers.  */
798 
  if (nelem <= 1)
799 
    return 0;
800 
 
801 
  /* If the first field in the aggregate has the same length as the entire
802 
     aggregate type, the type is returned in registers.  */
803 
  if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == len)
804 
    return 0;
805 
 
806 
  /* If the size of the aggregate is 8 bytes and the first field is
807 
     of size 4 bytes its alignment is equal to long long's alignment,
808 
     so it's returned in registers.  */
809 
  if (len == 8 && TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4)
810 
    return 0;
811 
 
812 
  /* Otherwise use struct convention.  */
813 
  return 1;
814 
}
815 
 
816 
static CORE_ADDR
817 
sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
818 
{
819 
  return sp & ~3;
820 
}
821 
 
822 
/* Function: push_dummy_call (formerly push_arguments)
823 
   Setup the function arguments for calling a function in the inferior.
824 
 
825 
   On the Renesas SH architecture, there are four registers (R4 to R7)
826 
   which are dedicated for passing function arguments.  Up to the first
827 
   four arguments (depending on size) may go into these registers.
828 
   The rest go on the stack.
829 
 
830 
   MVS: Except on SH variants that have floating point registers.
831 
   In that case, float and double arguments are passed in the same
832 
   manner, but using FP registers instead of GP registers.
833 
 
834 
   Arguments that are smaller than 4 bytes will still take up a whole
835 
   register or a whole 32-bit word on the stack, and will be
836 
   right-justified in the register or the stack word.  This includes
837 
   chars, shorts, and small aggregate types.
838 
 
839 
   Arguments that are larger than 4 bytes may be split between two or
840 
   more registers.  If there are not enough registers free, an argument
841 
   may be passed partly in a register (or registers), and partly on the
842 
   stack.  This includes doubles, long longs, and larger aggregates.
843 
   As far as I know, there is no upper limit to the size of aggregates
844 
   that will be passed in this way; in other words, the convention of
845 
   passing a pointer to a large aggregate instead of a copy is not used.
846 
 
847 
   MVS: The above appears to be true for the SH variants that do not
848 
   have an FPU, however those that have an FPU appear to copy the
849 
   aggregate argument onto the stack (and not place it in registers)
850 
   if it is larger than 16 bytes (four GP registers).
851 
 
852 
   An exceptional case exists for struct arguments (and possibly other
853 
   aggregates such as arrays) if the size is larger than 4 bytes but
854 
   not a multiple of 4 bytes.  In this case the argument is never split
855 
   between the registers and the stack, but instead is copied in its
856 
   entirety onto the stack, AND also copied into as many registers as
857 
   there is room for.  In other words, space in registers permitting,
858 
   two copies of the same argument are passed in.  As far as I can tell,
859 
   only the one on the stack is used, although that may be a function
860 
   of the level of compiler optimization.  I suspect this is a compiler
861 
   bug.  Arguments of these odd sizes are left-justified within the
862 
   word (as opposed to arguments smaller than 4 bytes, which are
863 
   right-justified).
864 
 
865 
   If the function is to return an aggregate type such as a struct, it
866 
   is either returned in the normal return value register R0 (if its
867 
   size is no greater than one byte), or else the caller must allocate
868 
   space into which the callee will copy the return value (if the size
869 
   is greater than one byte).  In this case, a pointer to the return
870 
   value location is passed into the callee in register R2, which does
871 
   not displace any of the other arguments passed in via registers R4
872 
   to R7.   */
873 
 
874 
/* Helper function to justify value in register according to endianess. */
875 
static char *
876 
sh_justify_value_in_reg (struct gdbarch *gdbarch, struct value *val, int len)
877 
{
878 
  static char valbuf[4];
879 
 
880 
  memset (valbuf, 0, sizeof (valbuf));
881 
  if (len < 4)
882 
    {
883 
      /* value gets right-justified in the register or stack word */
884 
      if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
885 
        memcpy (valbuf + (4 - len), (char *) value_contents (val), len);
886 
      else
887 
        memcpy (valbuf, (char *) value_contents (val), len);
888 
      return valbuf;
889 
    }
890 
  return (char *) value_contents (val);
891 
}
892 
 
893 
/* Helper function to eval number of bytes to allocate on stack. */
894 
static CORE_ADDR
895 
sh_stack_allocsize (int nargs, struct value **args)
896 
{
897 
  int stack_alloc = 0;
898 
  while (nargs-- > 0)
899 
    stack_alloc += ((TYPE_LENGTH (value_type (args[nargs])) + 3) & ~3);
900 
  return stack_alloc;
901 
}
902 
 
903 
/* Helper functions for getting the float arguments right.  Registers usage
904 
   depends on the ABI and the endianess.  The comments should enlighten how
905 
   it's intended to work. */
906 
 
907 
/* This array stores which of the float arg registers are already in use. */
908 
static int flt_argreg_array[FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM + 1];
909 
 
910 
/* This function just resets the above array to "no reg used so far". */
911 
static void
912 
sh_init_flt_argreg (void)
913 
{
914 
  memset (flt_argreg_array, 0, sizeof flt_argreg_array);
915 
}
916 
 
917 
/* This function returns the next register to use for float arg passing.
918 
   It returns either a valid value between FLOAT_ARG0_REGNUM and
919 
   FLOAT_ARGLAST_REGNUM if a register is available, otherwise it returns
920 
   FLOAT_ARGLAST_REGNUM + 1 to indicate that no register is available.
921 
 
922 
   Note that register number 0 in flt_argreg_array corresponds with the
923 
   real float register fr4.  In contrast to FLOAT_ARG0_REGNUM (value is
924 
   29) the parity of the register number is preserved, which is important
925 
   for the double register passing test (see the "argreg & 1" test below). */
926 
static int
927 
sh_next_flt_argreg (struct gdbarch *gdbarch, int len)
928 
{
929 
  int argreg;
930 
 
931 
  /* First search for the next free register. */
932 
  for (argreg = 0; argreg <= FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM;
933 
       ++argreg)
934 
    if (!flt_argreg_array[argreg])
935 
      break;
936 
 
937 
  /* No register left? */
938 
  if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
939 
    return FLOAT_ARGLAST_REGNUM + 1;
940 
 
941 
  if (len == 8)
942 
    {
943 
      /* Doubles are always starting in a even register number. */
944 
      if (argreg & 1)
945 
        {
946 
          flt_argreg_array[argreg] = 1;
947 
 
948 
          ++argreg;
949 
 
950 
          /* No register left? */
951 
          if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
952 
            return FLOAT_ARGLAST_REGNUM + 1;
953 
        }
954 
      /* Also mark the next register as used. */
955 
      flt_argreg_array[argreg + 1] = 1;
956 
    }
957 
  else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
958 
    {
959 
      /* In little endian, gcc passes floats like this: f5, f4, f7, f6, ... */
960 
      if (!flt_argreg_array[argreg + 1])
961 
        ++argreg;
962 
    }
963 
  flt_argreg_array[argreg] = 1;
964 
  return FLOAT_ARG0_REGNUM + argreg;
965 
}
966 
 
967 
/* Helper function which figures out, if a type is treated like a float type.
968 
 
969 
   The FPU ABIs have a special way how to treat types as float types.
970 
   Structures with exactly one member, which is of type float or double, are
971 
   treated exactly as the base types float or double:
972 
 
973 
     struct sf {
974 
       float f;
975 
     };
976 
 
977 
     struct sd {
978 
       double d;
979 
     };
980 
 
981 
   are handled the same way as just
982 
 
983 
     float f;
984 
 
985 
     double d;
986 
 
987 
   As a result, arguments of these struct types are pushed into floating point
988 
   registers exactly as floats or doubles, using the same decision algorithm.
989 
 
990 
   The same is valid if these types are used as function return types.  The
991 
   above structs are returned in fr0 resp. fr0,fr1 instead of in r0, r0,r1
992 
   or even using struct convention as it is for other structs.  */
993 
 
994 
static int
995 
sh_treat_as_flt_p (struct type *type)
996 
{
997 
  int len = TYPE_LENGTH (type);
998 
 
999 
  /* Ordinary float types are obviously treated as float.  */
1000 
  if (TYPE_CODE (type) == TYPE_CODE_FLT)
1001 
    return 1;
1002 
  /* Otherwise non-struct types are not treated as float.  */
1003 
  if (TYPE_CODE (type) != TYPE_CODE_STRUCT)
1004 
    return 0;
1005 
  /* Otherwise structs with more than one memeber are not treated as float.  */
1006 
  if (TYPE_NFIELDS (type) != 1)
1007 
    return 0;
1008 
  /* Otherwise if the type of that member is float, the whole type is
1009 
     treated as float.  */
1010 
  if (TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_FLT)
1011 
    return 1;
1012 
  /* Otherwise it's not treated as float.  */
1013 
  return 0;
1014 
}
1015 
 
1016 
static CORE_ADDR
1017 
sh_push_dummy_call_fpu (struct gdbarch *gdbarch,
1018 
                        struct value *function,
1019 
                        struct regcache *regcache,
1020 
                        CORE_ADDR bp_addr, int nargs,
1021 
                        struct value **args,
1022 
                        CORE_ADDR sp, int struct_return,
1023 
                        CORE_ADDR struct_addr)
1024 
{
1025 
  int stack_offset = 0;
1026 
  int argreg = ARG0_REGNUM;
1027 
  int flt_argreg = 0;
1028 
  int argnum;
1029 
  struct type *type;
1030 
  CORE_ADDR regval;
1031 
  char *val;
1032 
  int len, reg_size = 0;
1033 
  int pass_on_stack = 0;
1034 
  int treat_as_flt;
1035 
 
1036 
  /* first force sp to a 4-byte alignment */
1037 
  sp = sh_frame_align (gdbarch, sp);
1038 
 
1039 
  if (struct_return)
1040 
    regcache_cooked_write_unsigned (regcache,
1041 
                                    STRUCT_RETURN_REGNUM, struct_addr);
1042 
 
1043 
  /* make room on stack for args */
1044 
  sp -= sh_stack_allocsize (nargs, args);
1045 
 
1046 
  /* Initialize float argument mechanism. */
1047 
  sh_init_flt_argreg ();
1048 
 
1049 
  /* Now load as many as possible of the first arguments into
1050 
     registers, and push the rest onto the stack.  There are 16 bytes
1051 
     in four registers available.  Loop thru args from first to last.  */
1052 
  for (argnum = 0; argnum < nargs; argnum++)
1053 
    {
1054 
      type = value_type (args[argnum]);
1055 
      len = TYPE_LENGTH (type);
1056 
      val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
1057 
 
1058 
      /* Some decisions have to be made how various types are handled.
1059 
         This also differs in different ABIs. */
1060 
      pass_on_stack = 0;
1061 
 
1062 
      /* Find out the next register to use for a floating point value. */
1063 
      treat_as_flt = sh_treat_as_flt_p (type);
1064 
      if (treat_as_flt)
1065 
        flt_argreg = sh_next_flt_argreg (gdbarch, len);
1066 
      /* In contrast to non-FPU CPUs, arguments are never split between
1067 
         registers and stack.  If an argument doesn't fit in the remaining
1068 
         registers it's always pushed entirely on the stack.  */
1069 
      else if (len > ((ARGLAST_REGNUM - argreg + 1) * 4))
1070 
        pass_on_stack = 1;
1071 
 
1072 
      while (len > 0)
1073 
        {
1074 
          if ((treat_as_flt && flt_argreg > FLOAT_ARGLAST_REGNUM)
1075 
              || (!treat_as_flt && (argreg > ARGLAST_REGNUM
1076 
                                    || pass_on_stack)))
1077 
            {
1078 
              /* The data goes entirely on the stack, 4-byte aligned. */
1079 
              reg_size = (len + 3) & ~3;
1080 
              write_memory (sp + stack_offset, val, reg_size);
1081 
              stack_offset += reg_size;
1082 
            }
1083 
          else if (treat_as_flt && flt_argreg <= FLOAT_ARGLAST_REGNUM)
1084 
            {
1085 
              /* Argument goes in a float argument register.  */
1086 
              reg_size = register_size (gdbarch, flt_argreg);
1087 
              regval = extract_unsigned_integer (val, reg_size);
1088 
              /* In little endian mode, float types taking two registers
1089 
                 (doubles on sh4, long doubles on sh2e, sh3e and sh4) must
1090 
                 be stored swapped in the argument registers.  The below
1091 
                 code first writes the first 32 bits in the next but one
1092 
                 register, increments the val and len values accordingly
1093 
                 and then proceeds as normal by writing the second 32 bits
1094 
                 into the next register. */
1095 
              if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE
1096 
                  && TYPE_LENGTH (type) == 2 * reg_size)
1097 
                {
1098 
                  regcache_cooked_write_unsigned (regcache, flt_argreg + 1,
1099 
                                                  regval);
1100 
                  val += reg_size;
1101 
                  len -= reg_size;
1102 
                  regval = extract_unsigned_integer (val, reg_size);
1103 
                }
1104 
              regcache_cooked_write_unsigned (regcache, flt_argreg++, regval);
1105 
            }
1106 
          else if (!treat_as_flt && argreg <= ARGLAST_REGNUM)
1107 
            {
1108 
              /* there's room in a register */
1109 
              reg_size = register_size (gdbarch, argreg);
1110 
              regval = extract_unsigned_integer (val, reg_size);
1111 
              regcache_cooked_write_unsigned (regcache, argreg++, regval);
1112 
            }
1113 
          /* Store the value one register at a time or in one step on stack.  */
1114 
          len -= reg_size;
1115 
          val += reg_size;
1116 
        }
1117 
    }
1118 
 
1119 
  /* Store return address. */
1120 
  regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
1121 
 
1122 
  /* Update stack pointer.  */
1123 
  regcache_cooked_write_unsigned (regcache,
1124 
                                  gdbarch_sp_regnum (gdbarch), sp);
1125 
 
1126 
  return sp;
1127 
}
1128 
 
1129 
static CORE_ADDR
1130 
sh_push_dummy_call_nofpu (struct gdbarch *gdbarch,
1131 
                          struct value *function,
1132 
                          struct regcache *regcache,
1133 
                          CORE_ADDR bp_addr,
1134 
                          int nargs, struct value **args,
1135 
                          CORE_ADDR sp, int struct_return,
1136 
                          CORE_ADDR struct_addr)
1137 
{
1138 
  int stack_offset = 0;
1139 
  int argreg = ARG0_REGNUM;
1140 
  int argnum;
1141 
  struct type *type;
1142 
  CORE_ADDR regval;
1143 
  char *val;
1144 
  int len, reg_size;
1145 
 
1146 
  /* first force sp to a 4-byte alignment */
1147 
  sp = sh_frame_align (gdbarch, sp);
1148 
 
1149 
  if (struct_return)
1150 
    regcache_cooked_write_unsigned (regcache,
1151 
                                    STRUCT_RETURN_REGNUM, struct_addr);
1152 
 
1153 
  /* make room on stack for args */
1154 
  sp -= sh_stack_allocsize (nargs, args);
1155 
 
1156 
  /* Now load as many as possible of the first arguments into
1157 
     registers, and push the rest onto the stack.  There are 16 bytes
1158 
     in four registers available.  Loop thru args from first to last.  */
1159 
  for (argnum = 0; argnum < nargs; argnum++)
1160 
    {
1161 
      type = value_type (args[argnum]);
1162 
      len = TYPE_LENGTH (type);
1163 
      val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
1164 
 
1165 
      while (len > 0)
1166 
        {
1167 
          if (argreg > ARGLAST_REGNUM)
1168 
            {
1169 
              /* The remainder of the data goes entirely on the stack,
1170 
                 4-byte aligned. */
1171 
              reg_size = (len + 3) & ~3;
1172 
              write_memory (sp + stack_offset, val, reg_size);
1173 
              stack_offset += reg_size;
1174 
            }
1175 
          else if (argreg <= ARGLAST_REGNUM)
1176 
            {
1177 
              /* there's room in a register */
1178 
              reg_size = register_size (gdbarch, argreg);
1179 
              regval = extract_unsigned_integer (val, reg_size);
1180 
              regcache_cooked_write_unsigned (regcache, argreg++, regval);
1181 
            }
1182 
          /* Store the value reg_size bytes at a time.  This means that things
1183 
             larger than reg_size bytes may go partly in registers and partly
1184 
             on the stack.  */
1185 
          len -= reg_size;
1186 
          val += reg_size;
1187 
        }
1188 
    }
1189 
 
1190 
  /* Store return address. */
1191 
  regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
1192 
 
1193 
  /* Update stack pointer.  */
1194 
  regcache_cooked_write_unsigned (regcache,
1195 
                                  gdbarch_sp_regnum (gdbarch), sp);
1196 
 
1197 
  return sp;
1198 
}
1199 
 
1200 
/* Find a function's return value in the appropriate registers (in
1201 
   regbuf), and copy it into valbuf.  Extract from an array REGBUF
1202 
   containing the (raw) register state a function return value of type
1203 
   TYPE, and copy that, in virtual format, into VALBUF.  */
1204 
static void
1205 
sh_extract_return_value_nofpu (struct type *type, struct regcache *regcache,
1206 
                               void *valbuf)
1207 
{
1208 
  int len = TYPE_LENGTH (type);
1209 
  int return_register = R0_REGNUM;
1210 
  int offset;
1211 
 
1212 
  if (len <= 4)
1213 
    {
1214 
      ULONGEST c;
1215 
 
1216 
      regcache_cooked_read_unsigned (regcache, R0_REGNUM, &c);
1217 
      store_unsigned_integer (valbuf, len, c);
1218 
    }
1219 
  else if (len == 8)
1220 
    {
1221 
      int i, regnum = R0_REGNUM;
1222 
      for (i = 0; i < len; i += 4)
1223 
        regcache_raw_read (regcache, regnum++, (char *) valbuf + i);
1224 
    }
1225 
  else
1226 
    error (_("bad size for return value"));
1227 
}
1228 
 
1229 
static void
1230 
sh_extract_return_value_fpu (struct type *type, struct regcache *regcache,
1231 
                             void *valbuf)
1232 
{
1233 
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
1234 
  if (sh_treat_as_flt_p (type))
1235 
    {
1236 
      int len = TYPE_LENGTH (type);
1237 
      int i, regnum = gdbarch_fp0_regnum (gdbarch);
1238 
      for (i = 0; i < len; i += 4)
1239 
        if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
1240 
          regcache_raw_read (regcache, regnum++, (char *) valbuf + len - 4 - i);
1241 
        else
1242 
          regcache_raw_read (regcache, regnum++, (char *) valbuf + i);
1243 
    }
1244 
  else
1245 
    sh_extract_return_value_nofpu (type, regcache, valbuf);
1246 
}
1247 
 
1248 
/* Write into appropriate registers a function return value
1249 
   of type TYPE, given in virtual format.
1250 
   If the architecture is sh4 or sh3e, store a function's return value
1251 
   in the R0 general register or in the FP0 floating point register,
1252 
   depending on the type of the return value. In all the other cases
1253 
   the result is stored in r0, left-justified. */
1254 
static void
1255 
sh_store_return_value_nofpu (struct type *type, struct regcache *regcache,
1256 
                             const void *valbuf)
1257 
{
1258 
  ULONGEST val;
1259 
  int len = TYPE_LENGTH (type);
1260 
 
1261 
  if (len <= 4)
1262 
    {
1263 
      val = extract_unsigned_integer (valbuf, len);
1264 
      regcache_cooked_write_unsigned (regcache, R0_REGNUM, val);
1265 
    }
1266 
  else
1267 
    {
1268 
      int i, regnum = R0_REGNUM;
1269 
      for (i = 0; i < len; i += 4)
1270 
        regcache_raw_write (regcache, regnum++, (char *) valbuf + i);
1271 
    }
1272 
}
1273 
 
1274 
static void
1275 
sh_store_return_value_fpu (struct type *type, struct regcache *regcache,
1276 
                           const void *valbuf)
1277 
{
1278 
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
1279 
  if (sh_treat_as_flt_p (type))
1280 
    {
1281 
      int len = TYPE_LENGTH (type);
1282 
      int i, regnum = gdbarch_fp0_regnum (gdbarch);
1283 
      for (i = 0; i < len; i += 4)
1284 
        if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
1285 
          regcache_raw_write (regcache, regnum++,
1286 
                              (char *) valbuf + len - 4 - i);
1287 
        else
1288 
          regcache_raw_write (regcache, regnum++, (char *) valbuf + i);
1289 
    }
1290 
  else
1291 
    sh_store_return_value_nofpu (type, regcache, valbuf);
1292 
}
1293 
 
1294 
static enum return_value_convention
1295 
sh_return_value_nofpu (struct gdbarch *gdbarch, struct type *type,
1296 
                       struct regcache *regcache,
1297 
                       gdb_byte *readbuf, const gdb_byte *writebuf)
1298 
{
1299 
  if (sh_use_struct_convention (0, type))
1300 
    return RETURN_VALUE_STRUCT_CONVENTION;
1301 
  if (writebuf)
1302 
    sh_store_return_value_nofpu (type, regcache, writebuf);
1303 
  else if (readbuf)
1304 
    sh_extract_return_value_nofpu (type, regcache, readbuf);
1305 
  return RETURN_VALUE_REGISTER_CONVENTION;
1306 
}
1307 
 
1308 
static enum return_value_convention
1309 
sh_return_value_fpu (struct gdbarch *gdbarch, struct type *type,
1310 
                     struct regcache *regcache,
1311 
                     gdb_byte *readbuf, const gdb_byte *writebuf)
1312 
{
1313 
  if (sh_use_struct_convention (0, type))
1314 
    return RETURN_VALUE_STRUCT_CONVENTION;
1315 
  if (writebuf)
1316 
    sh_store_return_value_fpu (type, regcache, writebuf);
1317 
  else if (readbuf)
1318 
    sh_extract_return_value_fpu (type, regcache, readbuf);
1319 
  return RETURN_VALUE_REGISTER_CONVENTION;
1320 
}
1321 
 
1322 
/* Print the registers in a form similar to the E7000 */
1323 
 
1324 
static void
1325 
sh_generic_show_regs (struct frame_info *frame)
1326 
{
1327 
  printf_filtered
1328 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1329 
     paddr (get_frame_register_unsigned (frame,
1330 
                                         gdbarch_pc_regnum
1331 
                                           (get_frame_arch (frame)))),
1332 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1333 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1334 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1335 
 
1336 
  printf_filtered
1337 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1338 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1339 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1340 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1341 
 
1342 
  printf_filtered
1343 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1344 
     (long) get_frame_register_unsigned (frame, 0),
1345 
     (long) get_frame_register_unsigned (frame, 1),
1346 
     (long) get_frame_register_unsigned (frame, 2),
1347 
     (long) get_frame_register_unsigned (frame, 3),
1348 
     (long) get_frame_register_unsigned (frame, 4),
1349 
     (long) get_frame_register_unsigned (frame, 5),
1350 
     (long) get_frame_register_unsigned (frame, 6),
1351 
     (long) get_frame_register_unsigned (frame, 7));
1352 
  printf_filtered
1353 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1354 
     (long) get_frame_register_unsigned (frame, 8),
1355 
     (long) get_frame_register_unsigned (frame, 9),
1356 
     (long) get_frame_register_unsigned (frame, 10),
1357 
     (long) get_frame_register_unsigned (frame, 11),
1358 
     (long) get_frame_register_unsigned (frame, 12),
1359 
     (long) get_frame_register_unsigned (frame, 13),
1360 
     (long) get_frame_register_unsigned (frame, 14),
1361 
     (long) get_frame_register_unsigned (frame, 15));
1362 
}
1363 
 
1364 
static void
1365 
sh3_show_regs (struct frame_info *frame)
1366 
{
1367 
  printf_filtered
1368 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1369 
     paddr (get_frame_register_unsigned (frame,
1370 
                                         gdbarch_pc_regnum
1371 
                                           (get_frame_arch (frame)))),
1372 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1373 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1374 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1375 
 
1376 
  printf_filtered
1377 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1378 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1379 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1380 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1381 
  printf_filtered
1382 
    ("     SSR %08lx      SPC %08lx\n",
1383 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1384 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM));
1385 
 
1386 
  printf_filtered
1387 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1388 
     (long) get_frame_register_unsigned (frame, 0),
1389 
     (long) get_frame_register_unsigned (frame, 1),
1390 
     (long) get_frame_register_unsigned (frame, 2),
1391 
     (long) get_frame_register_unsigned (frame, 3),
1392 
     (long) get_frame_register_unsigned (frame, 4),
1393 
     (long) get_frame_register_unsigned (frame, 5),
1394 
     (long) get_frame_register_unsigned (frame, 6),
1395 
     (long) get_frame_register_unsigned (frame, 7));
1396 
  printf_filtered
1397 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1398 
     (long) get_frame_register_unsigned (frame, 8),
1399 
     (long) get_frame_register_unsigned (frame, 9),
1400 
     (long) get_frame_register_unsigned (frame, 10),
1401 
     (long) get_frame_register_unsigned (frame, 11),
1402 
     (long) get_frame_register_unsigned (frame, 12),
1403 
     (long) get_frame_register_unsigned (frame, 13),
1404 
     (long) get_frame_register_unsigned (frame, 14),
1405 
     (long) get_frame_register_unsigned (frame, 15));
1406 
}
1407 
 
1408 
static void
1409 
sh2e_show_regs (struct frame_info *frame)
1410 
{
1411 
  struct gdbarch *gdbarch = get_frame_arch (frame);
1412 
  printf_filtered
1413 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1414 
     paddr (get_frame_register_unsigned (frame,
1415 
                                         gdbarch_pc_regnum (gdbarch))),
1416 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1417 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1418 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1419 
 
1420 
  printf_filtered
1421 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1422 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1423 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1424 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1425 
  printf_filtered
1426 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1427 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1428 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1429 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1430 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1431 
 
1432 
  printf_filtered
1433 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1434 
     (long) get_frame_register_unsigned (frame, 0),
1435 
     (long) get_frame_register_unsigned (frame, 1),
1436 
     (long) get_frame_register_unsigned (frame, 2),
1437 
     (long) get_frame_register_unsigned (frame, 3),
1438 
     (long) get_frame_register_unsigned (frame, 4),
1439 
     (long) get_frame_register_unsigned (frame, 5),
1440 
     (long) get_frame_register_unsigned (frame, 6),
1441 
     (long) get_frame_register_unsigned (frame, 7));
1442 
  printf_filtered
1443 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1444 
     (long) get_frame_register_unsigned (frame, 8),
1445 
     (long) get_frame_register_unsigned (frame, 9),
1446 
     (long) get_frame_register_unsigned (frame, 10),
1447 
     (long) get_frame_register_unsigned (frame, 11),
1448 
     (long) get_frame_register_unsigned (frame, 12),
1449 
     (long) get_frame_register_unsigned (frame, 13),
1450 
     (long) get_frame_register_unsigned (frame, 14),
1451 
     (long) get_frame_register_unsigned (frame, 15));
1452 
 
1453 
  printf_filtered
1454 
    ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1455 
     (long) get_frame_register_unsigned
1456 
              (frame, gdbarch_fp0_regnum (gdbarch) + 0),
1457 
     (long) get_frame_register_unsigned
1458 
              (frame, gdbarch_fp0_regnum (gdbarch) + 1),
1459 
     (long) get_frame_register_unsigned
1460 
              (frame, gdbarch_fp0_regnum (gdbarch) + 2),
1461 
     (long) get_frame_register_unsigned
1462 
              (frame, gdbarch_fp0_regnum (gdbarch) + 3),
1463 
     (long) get_frame_register_unsigned
1464 
              (frame, gdbarch_fp0_regnum (gdbarch) + 4),
1465 
     (long) get_frame_register_unsigned
1466 
              (frame, gdbarch_fp0_regnum (gdbarch) + 5),
1467 
     (long) get_frame_register_unsigned
1468 
              (frame, gdbarch_fp0_regnum (gdbarch) + 6),
1469 
     (long) get_frame_register_unsigned
1470 
              (frame, gdbarch_fp0_regnum (gdbarch) + 7));
1471 
  printf_filtered
1472 
    ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1473 
     (long) get_frame_register_unsigned
1474 
              (frame, gdbarch_fp0_regnum (gdbarch) + 8),
1475 
     (long) get_frame_register_unsigned
1476 
              (frame, gdbarch_fp0_regnum (gdbarch) + 9),
1477 
     (long) get_frame_register_unsigned
1478 
              (frame, gdbarch_fp0_regnum (gdbarch) + 10),
1479 
     (long) get_frame_register_unsigned
1480 
              (frame, gdbarch_fp0_regnum (gdbarch) + 11),
1481 
     (long) get_frame_register_unsigned
1482 
              (frame, gdbarch_fp0_regnum (gdbarch) + 12),
1483 
     (long) get_frame_register_unsigned
1484 
              (frame, gdbarch_fp0_regnum (gdbarch) + 13),
1485 
     (long) get_frame_register_unsigned
1486 
              (frame, gdbarch_fp0_regnum (gdbarch) + 14),
1487 
     (long) get_frame_register_unsigned
1488 
              (frame, gdbarch_fp0_regnum (gdbarch) + 15));
1489 
}
1490 
 
1491 
static void
1492 
sh2a_show_regs (struct frame_info *frame)
1493 
{
1494 
  struct gdbarch *gdbarch = get_frame_arch (frame);
1495 
  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
1496 
 
1497 
  printf_filtered
1498 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1499 
     paddr (get_frame_register_unsigned (frame,
1500 
                                         gdbarch_pc_regnum (gdbarch))),
1501 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1502 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1503 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1504 
 
1505 
  printf_filtered
1506 
    ("     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
1507 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1508 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1509 
     (long) get_frame_register_unsigned (frame, TBR_REGNUM),
1510 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1511 
  printf_filtered
1512 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1513 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1514 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1515 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1516 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1517 
 
1518 
  printf_filtered
1519 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1520 
     (long) get_frame_register_unsigned (frame, 0),
1521 
     (long) get_frame_register_unsigned (frame, 1),
1522 
     (long) get_frame_register_unsigned (frame, 2),
1523 
     (long) get_frame_register_unsigned (frame, 3),
1524 
     (long) get_frame_register_unsigned (frame, 4),
1525 
     (long) get_frame_register_unsigned (frame, 5),
1526 
     (long) get_frame_register_unsigned (frame, 6),
1527 
     (long) get_frame_register_unsigned (frame, 7));
1528 
  printf_filtered
1529 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1530 
     (long) get_frame_register_unsigned (frame, 8),
1531 
     (long) get_frame_register_unsigned (frame, 9),
1532 
     (long) get_frame_register_unsigned (frame, 10),
1533 
     (long) get_frame_register_unsigned (frame, 11),
1534 
     (long) get_frame_register_unsigned (frame, 12),
1535 
     (long) get_frame_register_unsigned (frame, 13),
1536 
     (long) get_frame_register_unsigned (frame, 14),
1537 
     (long) get_frame_register_unsigned (frame, 15));
1538 
 
1539 
  printf_filtered
1540 
    (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
1541 
        : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1542 
     (long) get_frame_register_unsigned
1543 
              (frame, gdbarch_fp0_regnum (gdbarch) + 0),
1544 
     (long) get_frame_register_unsigned
1545 
              (frame, gdbarch_fp0_regnum (gdbarch) + 1),
1546 
     (long) get_frame_register_unsigned
1547 
              (frame, gdbarch_fp0_regnum (gdbarch) + 2),
1548 
     (long) get_frame_register_unsigned
1549 
              (frame, gdbarch_fp0_regnum (gdbarch) + 3),
1550 
     (long) get_frame_register_unsigned
1551 
              (frame, gdbarch_fp0_regnum (gdbarch) + 4),
1552 
     (long) get_frame_register_unsigned
1553 
              (frame, gdbarch_fp0_regnum (gdbarch) + 5),
1554 
     (long) get_frame_register_unsigned
1555 
              (frame, gdbarch_fp0_regnum (gdbarch) + 6),
1556 
     (long) get_frame_register_unsigned
1557 
              (frame, gdbarch_fp0_regnum (gdbarch) + 7));
1558 
  printf_filtered
1559 
    (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
1560 
        : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1561 
     (long) get_frame_register_unsigned
1562 
              (frame, gdbarch_fp0_regnum (gdbarch) + 8),
1563 
     (long) get_frame_register_unsigned
1564 
              (frame, gdbarch_fp0_regnum (gdbarch) + 9),
1565 
     (long) get_frame_register_unsigned
1566 
              (frame, gdbarch_fp0_regnum (gdbarch) + 10),
1567 
     (long) get_frame_register_unsigned
1568 
              (frame, gdbarch_fp0_regnum (gdbarch) + 11),
1569 
     (long) get_frame_register_unsigned
1570 
              (frame, gdbarch_fp0_regnum (gdbarch) + 12),
1571 
     (long) get_frame_register_unsigned
1572 
              (frame, gdbarch_fp0_regnum (gdbarch) + 13),
1573 
     (long) get_frame_register_unsigned
1574 
              (frame, gdbarch_fp0_regnum (gdbarch) + 14),
1575 
     (long) get_frame_register_unsigned
1576 
              (frame, gdbarch_fp0_regnum (gdbarch) + 15));
1577 
  printf_filtered
1578 
    ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM));
1579 
  printf_filtered
1580 
    ("R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1581 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0),
1582 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1),
1583 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2),
1584 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3),
1585 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4),
1586 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5),
1587 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6),
1588 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7));
1589 
  printf_filtered
1590 
    ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1591 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8),
1592 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9),
1593 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10),
1594 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11),
1595 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12),
1596 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13),
1597 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14));
1598 
  printf_filtered
1599 
    ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
1600 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15),
1601 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16),
1602 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17),
1603 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18),
1604 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19));
1605 
}
1606 
 
1607 
static void
1608 
sh2a_nofpu_show_regs (struct frame_info *frame)
1609 
{
1610 
  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
1611 
 
1612 
  printf_filtered
1613 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1614 
     paddr (get_frame_register_unsigned (frame,
1615 
                                         gdbarch_pc_regnum
1616 
                                           (get_frame_arch (frame)))),
1617 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1618 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1619 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1620 
 
1621 
  printf_filtered
1622 
    ("     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
1623 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1624 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1625 
     (long) get_frame_register_unsigned (frame, TBR_REGNUM),
1626 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1627 
  printf_filtered
1628 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1629 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1630 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1631 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1632 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1633 
 
1634 
  printf_filtered
1635 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1636 
     (long) get_frame_register_unsigned (frame, 0),
1637 
     (long) get_frame_register_unsigned (frame, 1),
1638 
     (long) get_frame_register_unsigned (frame, 2),
1639 
     (long) get_frame_register_unsigned (frame, 3),
1640 
     (long) get_frame_register_unsigned (frame, 4),
1641 
     (long) get_frame_register_unsigned (frame, 5),
1642 
     (long) get_frame_register_unsigned (frame, 6),
1643 
     (long) get_frame_register_unsigned (frame, 7));
1644 
  printf_filtered
1645 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1646 
     (long) get_frame_register_unsigned (frame, 8),
1647 
     (long) get_frame_register_unsigned (frame, 9),
1648 
     (long) get_frame_register_unsigned (frame, 10),
1649 
     (long) get_frame_register_unsigned (frame, 11),
1650 
     (long) get_frame_register_unsigned (frame, 12),
1651 
     (long) get_frame_register_unsigned (frame, 13),
1652 
     (long) get_frame_register_unsigned (frame, 14),
1653 
     (long) get_frame_register_unsigned (frame, 15));
1654 
 
1655 
  printf_filtered
1656 
    ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM));
1657 
  printf_filtered
1658 
    ("R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1659 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0),
1660 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1),
1661 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2),
1662 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3),
1663 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4),
1664 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5),
1665 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6),
1666 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7));
1667 
  printf_filtered
1668 
    ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1669 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8),
1670 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9),
1671 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10),
1672 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11),
1673 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12),
1674 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13),
1675 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14));
1676 
  printf_filtered
1677 
    ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
1678 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15),
1679 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16),
1680 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17),
1681 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18),
1682 
     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19));
1683 
}
1684 
 
1685 
static void
1686 
sh3e_show_regs (struct frame_info *frame)
1687 
{
1688 
  struct gdbarch *gdbarch = get_frame_arch (frame);
1689 
  printf_filtered
1690 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1691 
     paddr (get_frame_register_unsigned (frame,
1692 
                                         gdbarch_pc_regnum (gdbarch))),
1693 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1694 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1695 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1696 
 
1697 
  printf_filtered
1698 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1699 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1700 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1701 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1702 
  printf_filtered
1703 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1704 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1705 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1706 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1707 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1708 
 
1709 
  printf_filtered
1710 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1711 
     (long) get_frame_register_unsigned (frame, 0),
1712 
     (long) get_frame_register_unsigned (frame, 1),
1713 
     (long) get_frame_register_unsigned (frame, 2),
1714 
     (long) get_frame_register_unsigned (frame, 3),
1715 
     (long) get_frame_register_unsigned (frame, 4),
1716 
     (long) get_frame_register_unsigned (frame, 5),
1717 
     (long) get_frame_register_unsigned (frame, 6),
1718 
     (long) get_frame_register_unsigned (frame, 7));
1719 
  printf_filtered
1720 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1721 
     (long) get_frame_register_unsigned (frame, 8),
1722 
     (long) get_frame_register_unsigned (frame, 9),
1723 
     (long) get_frame_register_unsigned (frame, 10),
1724 
     (long) get_frame_register_unsigned (frame, 11),
1725 
     (long) get_frame_register_unsigned (frame, 12),
1726 
     (long) get_frame_register_unsigned (frame, 13),
1727 
     (long) get_frame_register_unsigned (frame, 14),
1728 
     (long) get_frame_register_unsigned (frame, 15));
1729 
 
1730 
  printf_filtered
1731 
    ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1732 
     (long) get_frame_register_unsigned
1733 
              (frame, gdbarch_fp0_regnum (gdbarch) + 0),
1734 
     (long) get_frame_register_unsigned
1735 
              (frame, gdbarch_fp0_regnum (gdbarch) + 1),
1736 
     (long) get_frame_register_unsigned
1737 
              (frame, gdbarch_fp0_regnum (gdbarch) + 2),
1738 
     (long) get_frame_register_unsigned
1739 
              (frame, gdbarch_fp0_regnum (gdbarch) + 3),
1740 
     (long) get_frame_register_unsigned
1741 
              (frame, gdbarch_fp0_regnum (gdbarch) + 4),
1742 
     (long) get_frame_register_unsigned
1743 
              (frame, gdbarch_fp0_regnum (gdbarch) + 5),
1744 
     (long) get_frame_register_unsigned
1745 
              (frame, gdbarch_fp0_regnum (gdbarch) + 6),
1746 
     (long) get_frame_register_unsigned
1747 
              (frame, gdbarch_fp0_regnum (gdbarch) + 7));
1748 
  printf_filtered
1749 
    ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1750 
     (long) get_frame_register_unsigned
1751 
              (frame, gdbarch_fp0_regnum (gdbarch) + 8),
1752 
     (long) get_frame_register_unsigned
1753 
              (frame, gdbarch_fp0_regnum (gdbarch) + 9),
1754 
     (long) get_frame_register_unsigned
1755 
              (frame, gdbarch_fp0_regnum (gdbarch) + 10),
1756 
     (long) get_frame_register_unsigned
1757 
              (frame, gdbarch_fp0_regnum (gdbarch) + 11),
1758 
     (long) get_frame_register_unsigned
1759 
              (frame, gdbarch_fp0_regnum (gdbarch) + 12),
1760 
     (long) get_frame_register_unsigned
1761 
              (frame, gdbarch_fp0_regnum (gdbarch) + 13),
1762 
     (long) get_frame_register_unsigned
1763 
              (frame, gdbarch_fp0_regnum (gdbarch) + 14),
1764 
     (long) get_frame_register_unsigned
1765 
              (frame, gdbarch_fp0_regnum (gdbarch) + 15));
1766 
}
1767 
 
1768 
static void
1769 
sh3_dsp_show_regs (struct frame_info *frame)
1770 
{
1771 
  printf_filtered
1772 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1773 
     paddr (get_frame_register_unsigned (frame,
1774 
                                         gdbarch_pc_regnum
1775 
                                           (get_frame_arch (frame)))),
1776 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1777 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1778 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1779 
 
1780 
  printf_filtered
1781 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1782 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1783 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1784 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1785 
 
1786 
  printf_filtered
1787 
    ("     SSR %08lx      SPC %08lx      DSR %08lx\n",
1788 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1789 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1790 
     (long) get_frame_register_unsigned (frame, DSR_REGNUM));
1791 
 
1792 
  printf_filtered
1793 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1794 
     (long) get_frame_register_unsigned (frame, 0),
1795 
     (long) get_frame_register_unsigned (frame, 1),
1796 
     (long) get_frame_register_unsigned (frame, 2),
1797 
     (long) get_frame_register_unsigned (frame, 3),
1798 
     (long) get_frame_register_unsigned (frame, 4),
1799 
     (long) get_frame_register_unsigned (frame, 5),
1800 
     (long) get_frame_register_unsigned (frame, 6),
1801 
     (long) get_frame_register_unsigned (frame, 7));
1802 
  printf_filtered
1803 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1804 
     (long) get_frame_register_unsigned (frame, 8),
1805 
     (long) get_frame_register_unsigned (frame, 9),
1806 
     (long) get_frame_register_unsigned (frame, 10),
1807 
     (long) get_frame_register_unsigned (frame, 11),
1808 
     (long) get_frame_register_unsigned (frame, 12),
1809 
     (long) get_frame_register_unsigned (frame, 13),
1810 
     (long) get_frame_register_unsigned (frame, 14),
1811 
     (long) get_frame_register_unsigned (frame, 15));
1812 
 
1813 
  printf_filtered
1814 
    ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
1815 
     (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff,
1816 
     (long) get_frame_register_unsigned (frame, A0_REGNUM),
1817 
     (long) get_frame_register_unsigned (frame, M0_REGNUM),
1818 
     (long) get_frame_register_unsigned (frame, X0_REGNUM),
1819 
     (long) get_frame_register_unsigned (frame, Y0_REGNUM),
1820 
     (long) get_frame_register_unsigned (frame, RS_REGNUM),
1821 
     (long) get_frame_register_unsigned (frame, MOD_REGNUM));
1822 
  printf_filtered
1823 
    ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
1824 
     (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff,
1825 
     (long) get_frame_register_unsigned (frame, A1_REGNUM),
1826 
     (long) get_frame_register_unsigned (frame, M1_REGNUM),
1827 
     (long) get_frame_register_unsigned (frame, X1_REGNUM),
1828 
     (long) get_frame_register_unsigned (frame, Y1_REGNUM),
1829 
     (long) get_frame_register_unsigned (frame, RE_REGNUM));
1830 
}
1831 
 
1832 
static void
1833 
sh4_show_regs (struct frame_info *frame)
1834 
{
1835 
  struct gdbarch *gdbarch = get_frame_arch (frame);
1836 
  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
1837 
 
1838 
  printf_filtered
1839 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1840 
     paddr (get_frame_register_unsigned (frame,
1841 
                                         gdbarch_pc_regnum (gdbarch))),
1842 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1843 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1844 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1845 
 
1846 
  printf_filtered
1847 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1848 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1849 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1850 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1851 
  printf_filtered
1852 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1853 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1854 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1855 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1856 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1857 
 
1858 
  printf_filtered
1859 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1860 
     (long) get_frame_register_unsigned (frame, 0),
1861 
     (long) get_frame_register_unsigned (frame, 1),
1862 
     (long) get_frame_register_unsigned (frame, 2),
1863 
     (long) get_frame_register_unsigned (frame, 3),
1864 
     (long) get_frame_register_unsigned (frame, 4),
1865 
     (long) get_frame_register_unsigned (frame, 5),
1866 
     (long) get_frame_register_unsigned (frame, 6),
1867 
     (long) get_frame_register_unsigned (frame, 7));
1868 
  printf_filtered
1869 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1870 
     (long) get_frame_register_unsigned (frame, 8),
1871 
     (long) get_frame_register_unsigned (frame, 9),
1872 
     (long) get_frame_register_unsigned (frame, 10),
1873 
     (long) get_frame_register_unsigned (frame, 11),
1874 
     (long) get_frame_register_unsigned (frame, 12),
1875 
     (long) get_frame_register_unsigned (frame, 13),
1876 
     (long) get_frame_register_unsigned (frame, 14),
1877 
     (long) get_frame_register_unsigned (frame, 15));
1878 
 
1879 
  printf_filtered
1880 
    (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
1881 
        : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1882 
     (long) get_frame_register_unsigned
1883 
              (frame, gdbarch_fp0_regnum (gdbarch) + 0),
1884 
     (long) get_frame_register_unsigned
1885 
              (frame, gdbarch_fp0_regnum (gdbarch) + 1),
1886 
     (long) get_frame_register_unsigned
1887 
              (frame, gdbarch_fp0_regnum (gdbarch) + 2),
1888 
     (long) get_frame_register_unsigned
1889 
              (frame, gdbarch_fp0_regnum (gdbarch) + 3),
1890 
     (long) get_frame_register_unsigned
1891 
              (frame, gdbarch_fp0_regnum (gdbarch) + 4),
1892 
     (long) get_frame_register_unsigned
1893 
              (frame, gdbarch_fp0_regnum (gdbarch) + 5),
1894 
     (long) get_frame_register_unsigned
1895 
              (frame, gdbarch_fp0_regnum (gdbarch) + 6),
1896 
     (long) get_frame_register_unsigned
1897 
              (frame, gdbarch_fp0_regnum (gdbarch) + 7));
1898 
  printf_filtered
1899 
    (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
1900 
        : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1901 
     (long) get_frame_register_unsigned
1902 
              (frame, gdbarch_fp0_regnum (gdbarch) + 8),
1903 
     (long) get_frame_register_unsigned
1904 
              (frame, gdbarch_fp0_regnum (gdbarch) + 9),
1905 
     (long) get_frame_register_unsigned
1906 
              (frame, gdbarch_fp0_regnum (gdbarch) + 10),
1907 
     (long) get_frame_register_unsigned
1908 
              (frame, gdbarch_fp0_regnum (gdbarch) + 11),
1909 
     (long) get_frame_register_unsigned
1910 
              (frame, gdbarch_fp0_regnum (gdbarch) + 12),
1911 
     (long) get_frame_register_unsigned
1912 
              (frame, gdbarch_fp0_regnum (gdbarch) + 13),
1913 
     (long) get_frame_register_unsigned
1914 
              (frame, gdbarch_fp0_regnum (gdbarch) + 14),
1915 
     (long) get_frame_register_unsigned
1916 
              (frame, gdbarch_fp0_regnum (gdbarch) + 15));
1917 
}
1918 
 
1919 
static void
1920 
sh4_nofpu_show_regs (struct frame_info *frame)
1921 
{
1922 
  printf_filtered
1923 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1924 
     paddr (get_frame_register_unsigned (frame,
1925 
                                         gdbarch_pc_regnum
1926 
                                           (get_frame_arch (frame)))),
1927 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1928 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1929 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1930 
 
1931 
  printf_filtered
1932 
    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
1933 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1934 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1935 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1936 
  printf_filtered
1937 
    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
1938 
     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
1939 
     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
1940 
     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
1941 
     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1942 
 
1943 
  printf_filtered
1944 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1945 
     (long) get_frame_register_unsigned (frame, 0),
1946 
     (long) get_frame_register_unsigned (frame, 1),
1947 
     (long) get_frame_register_unsigned (frame, 2),
1948 
     (long) get_frame_register_unsigned (frame, 3),
1949 
     (long) get_frame_register_unsigned (frame, 4),
1950 
     (long) get_frame_register_unsigned (frame, 5),
1951 
     (long) get_frame_register_unsigned (frame, 6),
1952 
     (long) get_frame_register_unsigned (frame, 7));
1953 
  printf_filtered
1954 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1955 
     (long) get_frame_register_unsigned (frame, 8),
1956 
     (long) get_frame_register_unsigned (frame, 9),
1957 
     (long) get_frame_register_unsigned (frame, 10),
1958 
     (long) get_frame_register_unsigned (frame, 11),
1959 
     (long) get_frame_register_unsigned (frame, 12),
1960 
     (long) get_frame_register_unsigned (frame, 13),
1961 
     (long) get_frame_register_unsigned (frame, 14),
1962 
     (long) get_frame_register_unsigned (frame, 15));
1963 
}
1964 
 
1965 
static void
1966 
sh_dsp_show_regs (struct frame_info *frame)
1967 
{
1968 
  printf_filtered
1969 
    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
1970 
     paddr (get_frame_register_unsigned (frame,
1971 
                                         gdbarch_pc_regnum
1972 
                                           (get_frame_arch (frame)))),
1973 
     (long) get_frame_register_unsigned (frame, SR_REGNUM),
1974 
     (long) get_frame_register_unsigned (frame, PR_REGNUM),
1975 
     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
1976 
 
1977 
  printf_filtered
1978 
    ("     GBR %08lx      VBR %08lx      DSR %08lx     MACL %08lx\n",
1979 
     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
1980 
     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
1981 
     (long) get_frame_register_unsigned (frame, DSR_REGNUM),
1982 
     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
1983 
 
1984 
  printf_filtered
1985 
    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1986 
     (long) get_frame_register_unsigned (frame, 0),
1987 
     (long) get_frame_register_unsigned (frame, 1),
1988 
     (long) get_frame_register_unsigned (frame, 2),
1989 
     (long) get_frame_register_unsigned (frame, 3),
1990 
     (long) get_frame_register_unsigned (frame, 4),
1991 
     (long) get_frame_register_unsigned (frame, 5),
1992 
     (long) get_frame_register_unsigned (frame, 6),
1993 
     (long) get_frame_register_unsigned (frame, 7));
1994 
  printf_filtered
1995 
    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1996 
     (long) get_frame_register_unsigned (frame, 8),
1997 
     (long) get_frame_register_unsigned (frame, 9),
1998 
     (long) get_frame_register_unsigned (frame, 10),
1999 
     (long) get_frame_register_unsigned (frame, 11),
2000 
     (long) get_frame_register_unsigned (frame, 12),
2001 
     (long) get_frame_register_unsigned (frame, 13),
2002 
     (long) get_frame_register_unsigned (frame, 14),
2003 
     (long) get_frame_register_unsigned (frame, 15));
2004 
 
2005 
  printf_filtered
2006 
    ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
2007 
     (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff,
2008 
     (long) get_frame_register_unsigned (frame, A0_REGNUM),
2009 
     (long) get_frame_register_unsigned (frame, M0_REGNUM),
2010 
     (long) get_frame_register_unsigned (frame, X0_REGNUM),
2011 
     (long) get_frame_register_unsigned (frame, Y0_REGNUM),
2012 
     (long) get_frame_register_unsigned (frame, RS_REGNUM),
2013 
     (long) get_frame_register_unsigned (frame, MOD_REGNUM));
2014 
  printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
2015 
     (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff,
2016 
     (long) get_frame_register_unsigned (frame, A1_REGNUM),
2017 
     (long) get_frame_register_unsigned (frame, M1_REGNUM),
2018 
     (long) get_frame_register_unsigned (frame, X1_REGNUM),
2019 
     (long) get_frame_register_unsigned (frame, Y1_REGNUM),
2020 
     (long) get_frame_register_unsigned (frame, RE_REGNUM));
2021 
}
2022 
 
2023 
static void
2024 
sh_show_regs_command (char *args, int from_tty)
2025 
{
2026 
  if (sh_show_regs)
2027 
    (*sh_show_regs) (get_current_frame ());
2028 
}
2029 
 
2030 
static struct type *
2031 
sh_sh2a_register_type (struct gdbarch *gdbarch, int reg_nr)
2032 
{
2033 
  if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
2034 
       && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
2035 
    return builtin_type_float;
2036 
  else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
2037 
    return builtin_type_double;
2038 
  else
2039 
    return builtin_type_int;
2040 
}
2041 
 
2042 
/* Return the GDB type object for the "standard" data type
2043 
   of data in register N.  */
2044 
static struct type *
2045 
sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr)
2046 
{
2047 
  if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
2048 
       && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
2049 
    return builtin_type_float;
2050 
  else
2051 
    return builtin_type_int;
2052 
}
2053 
 
2054 
static struct type *
2055 
sh_sh4_build_float_register_type (int high)
2056 
{
2057 
  struct type *temp;
2058 
 
2059 
  temp = create_range_type (NULL, builtin_type_int, 0, high);
2060 
  return create_array_type (NULL, builtin_type_float, temp);
2061 
}
2062 
 
2063 
static struct type *
2064 
sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr)
2065 
{
2066 
  if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
2067 
       && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
2068 
    return builtin_type_float;
2069 
  else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
2070 
    return builtin_type_double;
2071 
  else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
2072 
    return sh_sh4_build_float_register_type (3);
2073 
  else
2074 
    return builtin_type_int;
2075 
}
2076 
 
2077 
static struct type *
2078 
sh_default_register_type (struct gdbarch *gdbarch, int reg_nr)
2079 
{
2080 
  return builtin_type_int;
2081 
}
2082 
 
2083 
/* Is a register in a reggroup?
2084 
   The default code in reggroup.c doesn't identify system registers, some
2085 
   float registers or any of the vector registers.
2086 
   TODO: sh2a and dsp registers.  */
2087 
int
2088 
sh_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
2089 
                        struct reggroup *reggroup)
2090 
{
2091 
  if (gdbarch_register_name (gdbarch, regnum) == NULL
2092 
      || *gdbarch_register_name (gdbarch, regnum) == '\0')
2093 
    return 0;
2094 
 
2095 
  if (reggroup == float_reggroup
2096 
      && (regnum == FPUL_REGNUM
2097 
          || regnum == FPSCR_REGNUM))
2098 
    return 1;
2099 
 
2100 
  if (regnum >= FV0_REGNUM && regnum <= FV_LAST_REGNUM)
2101 
    {
2102 
      if (reggroup == vector_reggroup || reggroup == float_reggroup)
2103 
        return 1;
2104 
      if (reggroup == general_reggroup)
2105 
        return 0;
2106 
    }
2107 
 
2108 
  if (regnum == VBR_REGNUM
2109 
      || regnum == SR_REGNUM
2110 
      || regnum == FPSCR_REGNUM
2111 
      || regnum == SSR_REGNUM
2112 
      || regnum == SPC_REGNUM)
2113 
    {
2114 
      if (reggroup == system_reggroup)
2115 
        return 1;
2116 
      if (reggroup == general_reggroup)
2117 
        return 0;
2118 
    }
2119 
 
2120 
  /* The default code can cope with any other registers.  */
2121 
  return default_register_reggroup_p (gdbarch, regnum, reggroup);
2122 
}
2123 
 
2124 
/* On the sh4, the DRi pseudo registers are problematic if the target
2125 
   is little endian. When the user writes one of those registers, for
2126 
   instance with 'ser var $dr0=1', we want the double to be stored
2127 
   like this:
2128 
   fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
2129 
   fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
2130 
 
2131 
   This corresponds to little endian byte order & big endian word
2132 
   order.  However if we let gdb write the register w/o conversion, it
2133 
   will write fr0 and fr1 this way:
2134 
   fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
2135 
   fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
2136 
   because it will consider fr0 and fr1 as a single LE stretch of memory.
2137 
 
2138 
   To achieve what we want we must force gdb to store things in
2139 
   floatformat_ieee_double_littlebyte_bigword (which is defined in
2140 
   include/floatformat.h and libiberty/floatformat.c.
2141 
 
2142 
   In case the target is big endian, there is no problem, the
2143 
   raw bytes will look like:
2144 
   fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00
2145 
   fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
2146 
 
2147 
   The other pseudo registers (the FVs) also don't pose a problem
2148 
   because they are stored as 4 individual FP elements. */
2149 
 
2150 
static void
2151 
sh_register_convert_to_virtual (int regnum, struct type *type,
2152 
                                char *from, char *to)
2153 
{
2154 
  if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
2155 
    {
2156 
      DOUBLEST val;
2157 
      floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
2158 
                               from, &val);
2159 
      store_typed_floating (to, type, val);
2160 
    }
2161 
  else
2162 
    error
2163 
      ("sh_register_convert_to_virtual called with non DR register number");
2164 
}
2165 
 
2166 
static void
2167 
sh_register_convert_to_raw (struct type *type, int regnum,
2168 
                            const void *from, void *to)
2169 
{
2170 
  if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
2171 
    {
2172 
      DOUBLEST val = extract_typed_floating (from, type);
2173 
      floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword,
2174 
                                 &val, to);
2175 
    }
2176 
  else
2177 
    error (_("sh_register_convert_to_raw called with non DR register number"));
2178 
}
2179 
 
2180 
/* For vectors of 4 floating point registers. */
2181 
static int
2182 
fv_reg_base_num (struct gdbarch *gdbarch, int fv_regnum)
2183 
{
2184 
  int fp_regnum;
2185 
 
2186 
  fp_regnum = gdbarch_fp0_regnum (gdbarch)
2187 
              + (fv_regnum - FV0_REGNUM) * 4;
2188 
  return fp_regnum;
2189 
}
2190 
 
2191 
/* For double precision floating point registers, i.e 2 fp regs.*/
2192 
static int
2193 
dr_reg_base_num (struct gdbarch *gdbarch, int dr_regnum)
2194 
{
2195 
  int fp_regnum;
2196 
 
2197 
  fp_regnum = gdbarch_fp0_regnum (gdbarch)
2198 
              + (dr_regnum - DR0_REGNUM) * 2;
2199 
  return fp_regnum;
2200 
}
2201 
 
2202 
static void
2203 
sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
2204 
                         int reg_nr, gdb_byte *buffer)
2205 
{
2206 
  int base_regnum, portion;
2207 
  char temp_buffer[MAX_REGISTER_SIZE];
2208 
 
2209 
  if (reg_nr == PSEUDO_BANK_REGNUM)
2210 
    regcache_raw_read (regcache, BANK_REGNUM, buffer);
2211 
  else
2212 
  if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
2213 
    {
2214 
      base_regnum = dr_reg_base_num (gdbarch, reg_nr);
2215 
 
2216 
      /* Build the value in the provided buffer. */
2217 
      /* Read the real regs for which this one is an alias.  */
2218 
      for (portion = 0; portion < 2; portion++)
2219 
        regcache_raw_read (regcache, base_regnum + portion,
2220 
                           (temp_buffer
2221 
                            + register_size (gdbarch,
2222 
                                             base_regnum) * portion));
2223 
      /* We must pay attention to the endiannes. */
2224 
      sh_register_convert_to_virtual (reg_nr,
2225 
                                      register_type (gdbarch, reg_nr),
2226 
                                      temp_buffer, buffer);
2227 
    }
2228 
  else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
2229 
    {
2230 
      base_regnum = fv_reg_base_num (gdbarch, reg_nr);
2231 
 
2232 
      /* Read the real regs for which this one is an alias.  */
2233 
      for (portion = 0; portion < 4; portion++)
2234 
        regcache_raw_read (regcache, base_regnum + portion,
2235 
                           ((char *) buffer
2236 
                            + register_size (gdbarch,
2237 
                                             base_regnum) * portion));
2238 
    }
2239 
}
2240 
 
2241 
static void
2242 
sh_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
2243 
                          int reg_nr, const gdb_byte *buffer)
2244 
{
2245 
  int base_regnum, portion;
2246 
  char temp_buffer[MAX_REGISTER_SIZE];
2247 
 
2248 
  if (reg_nr == PSEUDO_BANK_REGNUM)
2249 
    {
2250 
      /* When the bank register is written to, the whole register bank
2251 
         is switched and all values in the bank registers must be read
2252 
         from the target/sim again. We're just invalidating the regcache
2253 
         so that a re-read happens next time it's necessary.  */
2254 
      int bregnum;
2255 
 
2256 
      regcache_raw_write (regcache, BANK_REGNUM, buffer);
2257 
      for (bregnum = R0_BANK0_REGNUM; bregnum < MACLB_REGNUM; ++bregnum)
2258 
        regcache_invalidate (regcache, bregnum);
2259 
    }
2260 
  else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
2261 
    {
2262 
      base_regnum = dr_reg_base_num (gdbarch, reg_nr);
2263 
 
2264 
      /* We must pay attention to the endiannes. */
2265 
      sh_register_convert_to_raw (register_type (gdbarch, reg_nr),
2266 
                                  reg_nr, buffer, temp_buffer);
2267 
 
2268 
      /* Write the real regs for which this one is an alias.  */
2269 
      for (portion = 0; portion < 2; portion++)
2270 
        regcache_raw_write (regcache, base_regnum + portion,
2271 
                            (temp_buffer
2272 
                             + register_size (gdbarch,
2273 
                                              base_regnum) * portion));
2274 
    }
2275 
  else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
2276 
    {
2277 
      base_regnum = fv_reg_base_num (gdbarch, reg_nr);
2278 
 
2279 
      /* Write the real regs for which this one is an alias.  */
2280 
      for (portion = 0; portion < 4; portion++)
2281 
        regcache_raw_write (regcache, base_regnum + portion,
2282 
                            ((char *) buffer
2283 
                             + register_size (gdbarch,
2284 
                                              base_regnum) * portion));
2285 
    }
2286 
}
2287 
 
2288 
static int
2289 
sh_dsp_register_sim_regno (struct gdbarch *gdbarch, int nr)
2290 
{
2291 
  if (legacy_register_sim_regno (gdbarch, nr) < 0)
2292 
    return legacy_register_sim_regno (gdbarch, nr);
2293 
  if (nr >= DSR_REGNUM && nr <= Y1_REGNUM)
2294 
    return nr - DSR_REGNUM + SIM_SH_DSR_REGNUM;
2295 
  if (nr == MOD_REGNUM)
2296 
    return SIM_SH_MOD_REGNUM;
2297 
  if (nr == RS_REGNUM)
2298 
    return SIM_SH_RS_REGNUM;
2299 
  if (nr == RE_REGNUM)
2300 
    return SIM_SH_RE_REGNUM;
2301 
  if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM)
2302 
    return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
2303 
  return nr;
2304 
}
2305 
 
2306 
static int
2307 
sh_sh2a_register_sim_regno (struct gdbarch *gdbarch, int nr)
2308 
{
2309 
  switch (nr)
2310 
    {
2311 
      case TBR_REGNUM:
2312 
        return SIM_SH_TBR_REGNUM;
2313 
      case IBNR_REGNUM:
2314 
        return SIM_SH_IBNR_REGNUM;
2315 
      case IBCR_REGNUM:
2316 
        return SIM_SH_IBCR_REGNUM;
2317 
      case BANK_REGNUM:
2318 
        return SIM_SH_BANK_REGNUM;
2319 
      case MACLB_REGNUM:
2320 
        return SIM_SH_BANK_MACL_REGNUM;
2321 
      case GBRB_REGNUM:
2322 
        return SIM_SH_BANK_GBR_REGNUM;
2323 
      case PRB_REGNUM:
2324 
        return SIM_SH_BANK_PR_REGNUM;
2325 
      case IVNB_REGNUM:
2326 
        return SIM_SH_BANK_IVN_REGNUM;
2327 
      case MACHB_REGNUM:
2328 
        return SIM_SH_BANK_MACH_REGNUM;
2329 
      default:
2330 
        break;
2331 
    }
2332 
  return legacy_register_sim_regno (gdbarch, nr);
2333 
}
2334 
 
2335 
/* Set up the register unwinding such that call-clobbered registers are
2336 
   not displayed in frames >0 because the true value is not certain.
2337 
   The 'undefined' registers will show up as 'not available' unless the
2338 
   CFI says otherwise.
2339 
 
2340 
   This function is currently set up for SH4 and compatible only.  */
2341 
 
2342 
static void
2343 
sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
2344 
                          struct dwarf2_frame_state_reg *reg,
2345 
                          struct frame_info *next_frame)
2346 
{
2347 
  /* Mark the PC as the destination for the return address.  */
2348 
  if (regnum == gdbarch_pc_regnum (gdbarch))
2349 
    reg->how = DWARF2_FRAME_REG_RA;
2350 
 
2351 
  /* Mark the stack pointer as the call frame address.  */
2352 
  else if (regnum == gdbarch_sp_regnum (gdbarch))
2353 
    reg->how = DWARF2_FRAME_REG_CFA;
2354 
 
2355 
  /* The above was taken from the default init_reg in dwarf2-frame.c
2356 
     while the below is SH specific.  */
2357 
 
2358 
  /* Caller save registers.  */
2359 
  else if ((regnum >= R0_REGNUM && regnum <= R0_REGNUM+7)
2360 
           || (regnum >= FR0_REGNUM && regnum <= FR0_REGNUM+11)
2361 
           || (regnum >= DR0_REGNUM && regnum <= DR0_REGNUM+5)
2362 
           || (regnum >= FV0_REGNUM && regnum <= FV0_REGNUM+2)
2363 
           || (regnum == MACH_REGNUM)
2364 
           || (regnum == MACL_REGNUM)
2365 
           || (regnum == FPUL_REGNUM)
2366 
           || (regnum == SR_REGNUM))
2367 
    reg->how = DWARF2_FRAME_REG_UNDEFINED;
2368 
 
2369 
  /* Callee save registers.  */
2370 
  else if ((regnum >= R0_REGNUM+8 && regnum <= R0_REGNUM+15)
2371 
           || (regnum >= FR0_REGNUM+12 && regnum <= FR0_REGNUM+15)
2372 
           || (regnum >= DR0_REGNUM+6 && regnum <= DR0_REGNUM+8)
2373 
           || (regnum == FV0_REGNUM+3))
2374 
    reg->how = DWARF2_FRAME_REG_SAME_VALUE;
2375 
 
2376 
  /* Other registers.  These are not in the ABI and may or may not
2377 
     mean anything in frames >0 so don't show them.  */
2378 
  else if ((regnum >= R0_BANK0_REGNUM && regnum <= R0_BANK0_REGNUM+15)
2379 
           || (regnum == GBR_REGNUM)
2380 
           || (regnum == VBR_REGNUM)
2381 
           || (regnum == FPSCR_REGNUM)
2382 
           || (regnum == SSR_REGNUM)
2383 
           || (regnum == SPC_REGNUM))
2384 
    reg->how = DWARF2_FRAME_REG_UNDEFINED;
2385 
}
2386 
 
2387 
static struct sh_frame_cache *
2388 
sh_alloc_frame_cache (void)
2389 
{
2390 
  struct sh_frame_cache *cache;
2391 
  int i;
2392 
 
2393 
  cache = FRAME_OBSTACK_ZALLOC (struct sh_frame_cache);
2394 
 
2395 
  /* Base address.  */
2396 
  cache->base = 0;
2397 
  cache->saved_sp = 0;
2398 
  cache->sp_offset = 0;
2399 
  cache->pc = 0;
2400 
 
2401 
  /* Frameless until proven otherwise.  */
2402 
  cache->uses_fp = 0;
2403 
 
2404 
  /* Saved registers.  We initialize these to -1 since zero is a valid
2405 
     offset (that's where fp is supposed to be stored).  */
2406 
  for (i = 0; i < SH_NUM_REGS; i++)
2407 
    {
2408 
      cache->saved_regs[i] = -1;
2409 
    }
2410 
 
2411 
  return cache;
2412 
}
2413 
 
2414 
static struct sh_frame_cache *
2415 
sh_frame_cache (struct frame_info *next_frame, void **this_cache)
2416 
{
2417 
  struct sh_frame_cache *cache;
2418 
  CORE_ADDR current_pc;
2419 
  int i;
2420 
 
2421 
  if (*this_cache)
2422 
    return *this_cache;
2423 
 
2424 
  cache = sh_alloc_frame_cache ();
2425 
  *this_cache = cache;
2426 
 
2427 
  /* In principle, for normal frames, fp holds the frame pointer,
2428 
     which holds the base address for the current stack frame.
2429 
     However, for functions that don't need it, the frame pointer is
2430 
     optional.  For these "frameless" functions the frame pointer is
2431 
     actually the frame pointer of the calling frame. */
2432 
  cache->base = frame_unwind_register_unsigned (next_frame, FP_REGNUM);
2433 
  if (cache->base == 0)
2434 
    return cache;
2435 
 
2436 
  cache->pc = frame_func_unwind (next_frame, NORMAL_FRAME);
2437 
  current_pc = frame_pc_unwind (next_frame);
2438 
  if (cache->pc != 0)
2439 
    {
2440 
      ULONGEST fpscr;
2441 
      fpscr = frame_unwind_register_unsigned (next_frame, FPSCR_REGNUM);
2442 
      sh_analyze_prologue (cache->pc, current_pc, cache, fpscr);
2443 
    }
2444 
 
2445 
  if (!cache->uses_fp)
2446 
    {
2447 
      /* We didn't find a valid frame, which means that CACHE->base
2448 
         currently holds the frame pointer for our calling frame.  If
2449 
         we're at the start of a function, or somewhere half-way its
2450 
         prologue, the function's frame probably hasn't been fully
2451 
         setup yet.  Try to reconstruct the base address for the stack
2452 
         frame by looking at the stack pointer.  For truly "frameless"
2453 
         functions this might work too.  */
2454 
      cache->base = frame_unwind_register_unsigned
2455 
                    (next_frame,
2456 
                     gdbarch_sp_regnum (get_frame_arch (next_frame)));
2457 
    }
2458 
 
2459 
  /* Now that we have the base address for the stack frame we can
2460 
     calculate the value of sp in the calling frame.  */
2461 
  cache->saved_sp = cache->base + cache->sp_offset;
2462 
 
2463 
  /* Adjust all the saved registers such that they contain addresses
2464 
     instead of offsets.  */
2465 
  for (i = 0; i < SH_NUM_REGS; i++)
2466 
    if (cache->saved_regs[i] != -1)
2467 
      cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i] - 4;
2468 
 
2469 
  return cache;
2470 
}
2471 
 
2472 
static void
2473 
sh_frame_prev_register (struct frame_info *next_frame, void **this_cache,
2474 
                        int regnum, int *optimizedp,
2475 
                        enum lval_type *lvalp, CORE_ADDR *addrp,
2476 
                        int *realnump, gdb_byte *valuep)
2477 
{
2478 
  struct gdbarch *gdbarch = get_frame_arch (next_frame);
2479 
  struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
2480 
 
2481 
  gdb_assert (regnum >= 0);
2482 
 
2483 
  if (regnum == gdbarch_sp_regnum (gdbarch) && cache->saved_sp)
2484 
    {
2485 
      *optimizedp = 0;
2486 
      *lvalp = not_lval;
2487 
      *addrp = 0;
2488 
      *realnump = -1;
2489 
      if (valuep)
2490 
        {
2491 
          /* Store the value.  */
2492 
          store_unsigned_integer (valuep, 4, cache->saved_sp);
2493 
        }
2494 
      return;
2495 
    }
2496 
 
2497 
  /* The PC of the previous frame is stored in the PR register of
2498 
     the current frame.  Frob regnum so that we pull the value from
2499 
     the correct place.  */
2500 
  if (regnum == gdbarch_pc_regnum (gdbarch))
2501 
    regnum = PR_REGNUM;
2502 
 
2503 
  if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
2504 
    {
2505 
      *optimizedp = 0;
2506 
      *lvalp = lval_memory;
2507 
      *addrp = cache->saved_regs[regnum];
2508 
      *realnump = -1;
2509 
      if (valuep)
2510 
        {
2511 
          /* Read the value in from memory.  */
2512 
          read_memory (*addrp, valuep,
2513 
                       register_size (gdbarch, regnum));
2514 
        }
2515 
      return;
2516 
    }
2517 
 
2518 
  *optimizedp = 0;
2519 
  *lvalp = lval_register;
2520 
  *addrp = 0;
2521 
  *realnump = regnum;
2522 
  if (valuep)
2523 
    frame_unwind_register (next_frame, (*realnump), valuep);
2524 
}
2525 
 
2526 
static void
2527 
sh_frame_this_id (struct frame_info *next_frame, void **this_cache,
2528 
                  struct frame_id *this_id)
2529 
{
2530 
  struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
2531 
 
2532 
  /* This marks the outermost frame.  */
2533 
  if (cache->base == 0)
2534 
    return;
2535 
 
2536 
  *this_id = frame_id_build (cache->saved_sp, cache->pc);
2537 
}
2538 
 
2539 
static const struct frame_unwind sh_frame_unwind = {
2540 
  NORMAL_FRAME,
2541 
  sh_frame_this_id,
2542 
  sh_frame_prev_register
2543 
};
2544 
 
2545 
static const struct frame_unwind *
2546 
sh_frame_sniffer (struct frame_info *next_frame)
2547 
{
2548 
  return &sh_frame_unwind;
2549 
}
2550 
 
2551 
static CORE_ADDR
2552 
sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
2553 
{
2554 
  return frame_unwind_register_unsigned (next_frame,
2555 
                                         gdbarch_sp_regnum (gdbarch));
2556 
}
2557 
 
2558 
static CORE_ADDR
2559 
sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
2560 
{
2561 
  return frame_unwind_register_unsigned (next_frame,
2562 
                                         gdbarch_pc_regnum (gdbarch));
2563 
}
2564 
 
2565 
static struct frame_id
2566 
sh_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
2567 
{
2568 
  return frame_id_build (sh_unwind_sp (gdbarch, next_frame),
2569 
                         frame_pc_unwind (next_frame));
2570 
}
2571 
 
2572 
static CORE_ADDR
2573 
sh_frame_base_address (struct frame_info *next_frame, void **this_cache)
2574 
{
2575 
  struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache);
2576 
 
2577 
  return cache->base;
2578 
}
2579 
 
2580 
static const struct frame_base sh_frame_base = {
2581 
  &sh_frame_unwind,
2582 
  sh_frame_base_address,
2583 
  sh_frame_base_address,
2584 
  sh_frame_base_address
2585 
};
2586 
 
2587 
/* The epilogue is defined here as the area at the end of a function,
2588 
   either on the `ret' instruction itself or after an instruction which
2589 
   destroys the function's stack frame. */
2590 
static int
2591 
sh_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
2592 
{
2593 
  CORE_ADDR func_addr = 0, func_end = 0;
2594 
 
2595 
  if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
2596 
    {
2597 
      ULONGEST inst;
2598 
      /* The sh epilogue is max. 14 bytes long.  Give another 14 bytes
2599 
         for a nop and some fixed data (e.g. big offsets) which are
2600 
         unfortunately also treated as part of the function (which
2601 
         means, they are below func_end. */
2602 
      CORE_ADDR addr = func_end - 28;
2603 
      if (addr < func_addr + 4)
2604 
        addr = func_addr + 4;
2605 
      if (pc < addr)
2606 
        return 0;
2607 
 
2608 
      /* First search forward until hitting an rts. */
2609 
      while (addr < func_end
2610 
             && !IS_RTS (read_memory_unsigned_integer (addr, 2)))
2611 
        addr += 2;
2612 
      if (addr >= func_end)
2613 
        return 0;
2614 
 
2615 
      /* At this point we should find a mov.l @r15+,r14 instruction,
2616 
         either before or after the rts.  If not, then the function has
2617 
         probably no "normal" epilogue and we bail out here. */
2618 
      inst = read_memory_unsigned_integer (addr - 2, 2);
2619 
      if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2)))
2620 
        addr -= 2;
2621 
      else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2)))
2622 
        return 0;
2623 
 
2624 
      inst = read_memory_unsigned_integer (addr - 2, 2);
2625 
 
2626 
      /* Step over possible lds.l @r15+,macl. */
2627 
      if (IS_MACL_LDS (inst))
2628 
        {
2629 
          addr -= 2;
2630 
          inst = read_memory_unsigned_integer (addr - 2, 2);
2631 
        }
2632 
 
2633 
      /* Step over possible lds.l @r15+,pr. */
2634 
      if (IS_LDS (inst))
2635 
        {
2636 
          addr -= 2;
2637 
          inst = read_memory_unsigned_integer (addr - 2, 2);
2638 
        }
2639 
 
2640 
      /* Step over possible mov r14,r15. */
2641 
      if (IS_MOV_FP_SP (inst))
2642 
        {
2643 
          addr -= 2;
2644 
          inst = read_memory_unsigned_integer (addr - 2, 2);
2645 
        }
2646 
 
2647 
      /* Now check for FP adjustments, using add #imm,r14 or add rX, r14
2648 
         instructions. */
2649 
      while (addr > func_addr + 4
2650 
             && (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst)))
2651 
        {
2652 
          addr -= 2;
2653 
          inst = read_memory_unsigned_integer (addr - 2, 2);
2654 
        }
2655 
 
2656 
      /* On SH2a check if the previous instruction was perhaps a MOVI20.
2657 
         That's allowed for the epilogue.  */
2658 
      if ((gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a
2659 
           || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a_nofpu)
2660 
          && addr > func_addr + 6
2661 
          && IS_MOVI20 (read_memory_unsigned_integer (addr - 4, 2)))
2662 
        addr -= 4;
2663 
 
2664 
      if (pc >= addr)
2665 
        return 1;
2666 
    }
2667 
  return 0;
2668 
}
2669 
 
2670 
 
2671 
static struct gdbarch *
2672 
sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
2673 
{
2674 
  struct gdbarch *gdbarch;
2675 
 
2676 
  sh_show_regs = sh_generic_show_regs;
2677 
  switch (info.bfd_arch_info->mach)
2678 
    {
2679 
    case bfd_mach_sh2e:
2680 
      sh_show_regs = sh2e_show_regs;
2681 
      break;
2682 
    case bfd_mach_sh2a:
2683 
      sh_show_regs = sh2a_show_regs;
2684 
      break;
2685 
    case bfd_mach_sh2a_nofpu:
2686 
      sh_show_regs = sh2a_nofpu_show_regs;
2687 
      break;
2688 
    case bfd_mach_sh_dsp:
2689 
      sh_show_regs = sh_dsp_show_regs;
2690 
      break;
2691 
 
2692 
    case bfd_mach_sh3:
2693 
      sh_show_regs = sh3_show_regs;
2694 
      break;
2695 
 
2696 
    case bfd_mach_sh3e:
2697 
      sh_show_regs = sh3e_show_regs;
2698 
      break;
2699 
 
2700 
    case bfd_mach_sh3_dsp:
2701 
    case bfd_mach_sh4al_dsp:
2702 
      sh_show_regs = sh3_dsp_show_regs;
2703 
      break;
2704 
 
2705 
    case bfd_mach_sh4:
2706 
    case bfd_mach_sh4a:
2707 
      sh_show_regs = sh4_show_regs;
2708 
      break;
2709 
 
2710 
    case bfd_mach_sh4_nofpu:
2711 
    case bfd_mach_sh4a_nofpu:
2712 
      sh_show_regs = sh4_nofpu_show_regs;
2713 
      break;
2714 
 
2715 
    case bfd_mach_sh5:
2716 
      sh_show_regs = sh64_show_regs;
2717 
      /* SH5 is handled entirely in sh64-tdep.c */
2718 
      return sh64_gdbarch_init (info, arches);
2719 
    }
2720 
 
2721 
  /* If there is already a candidate, use it.  */
2722 
  arches = gdbarch_list_lookup_by_info (arches, &info);
2723 
  if (arches != NULL)
2724 
    return arches->gdbarch;
2725 
 
2726 
  /* None found, create a new architecture from the information
2727 
     provided. */
2728 
  gdbarch = gdbarch_alloc (&info, NULL);
2729 
 
2730 
  set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
2731 
  set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2732 
  set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2733 
  set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2734 
  set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2735 
  set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2736 
  set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2737 
  set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2738 
 
2739 
  set_gdbarch_num_regs (gdbarch, SH_NUM_REGS);
2740 
  set_gdbarch_sp_regnum (gdbarch, 15);
2741 
  set_gdbarch_pc_regnum (gdbarch, 16);
2742 
  set_gdbarch_fp0_regnum (gdbarch, -1);
2743 
  set_gdbarch_num_pseudo_regs (gdbarch, 0);
2744 
 
2745 
  set_gdbarch_register_type (gdbarch, sh_default_register_type);
2746 
  set_gdbarch_register_reggroup_p (gdbarch, sh_register_reggroup_p);
2747 
 
2748 
  set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc);
2749 
 
2750 
  set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh);
2751 
  set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno);
2752 
 
2753 
  set_gdbarch_return_value (gdbarch, sh_return_value_nofpu);
2754 
 
2755 
  set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
2756 
  set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
2757 
 
2758 
  set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
2759 
 
2760 
  set_gdbarch_believe_pcc_promotion (gdbarch, 1);
2761 
 
2762 
  set_gdbarch_frame_align (gdbarch, sh_frame_align);
2763 
  set_gdbarch_unwind_sp (gdbarch, sh_unwind_sp);
2764 
  set_gdbarch_unwind_pc (gdbarch, sh_unwind_pc);
2765 
  set_gdbarch_unwind_dummy_id (gdbarch, sh_unwind_dummy_id);
2766 
  frame_base_set_default (gdbarch, &sh_frame_base);
2767 
 
2768 
  set_gdbarch_in_function_epilogue_p (gdbarch, sh_in_function_epilogue_p);
2769 
 
2770 
  dwarf2_frame_set_init_reg (gdbarch, sh_dwarf2_frame_init_reg);
2771 
 
2772 
  switch (info.bfd_arch_info->mach)
2773 
    {
2774 
    case bfd_mach_sh:
2775 
      set_gdbarch_register_name (gdbarch, sh_sh_register_name);
2776 
      break;
2777 
 
2778 
    case bfd_mach_sh2:
2779 
      set_gdbarch_register_name (gdbarch, sh_sh_register_name);
2780 
      break;
2781 
 
2782 
    case bfd_mach_sh2e:
2783 
      /* doubles on sh2e and sh3e are actually 4 byte. */
2784 
      set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2785 
 
2786 
      set_gdbarch_register_name (gdbarch, sh_sh2e_register_name);
2787 
      set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
2788 
      set_gdbarch_fp0_regnum (gdbarch, 25);
2789 
      set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
2790 
      set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
2791 
      break;
2792 
 
2793 
    case bfd_mach_sh2a:
2794 
      set_gdbarch_register_name (gdbarch, sh_sh2a_register_name);
2795 
      set_gdbarch_register_type (gdbarch, sh_sh2a_register_type);
2796 
      set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno);
2797 
 
2798 
      set_gdbarch_fp0_regnum (gdbarch, 25);
2799 
      set_gdbarch_num_pseudo_regs (gdbarch, 9);
2800 
      set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
2801 
      set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
2802 
      set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
2803 
      set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
2804 
      break;
2805 
 
2806 
    case bfd_mach_sh2a_nofpu:
2807 
      set_gdbarch_register_name (gdbarch, sh_sh2a_nofpu_register_name);
2808 
      set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno);
2809 
 
2810 
      set_gdbarch_num_pseudo_regs (gdbarch, 1);
2811 
      set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
2812 
      set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
2813 
      break;
2814 
 
2815 
    case bfd_mach_sh_dsp:
2816 
      set_gdbarch_register_name (gdbarch, sh_sh_dsp_register_name);
2817 
      set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
2818 
      break;
2819 
 
2820 
    case bfd_mach_sh3:
2821 
    case bfd_mach_sh3_nommu:
2822 
    case bfd_mach_sh2a_nofpu_or_sh3_nommu:
2823 
      set_gdbarch_register_name (gdbarch, sh_sh3_register_name);
2824 
      break;
2825 
 
2826 
    case bfd_mach_sh3e:
2827 
    case bfd_mach_sh2a_or_sh3e:
2828 
      /* doubles on sh2e and sh3e are actually 4 byte. */
2829 
      set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2830 
 
2831 
      set_gdbarch_register_name (gdbarch, sh_sh3e_register_name);
2832 
      set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
2833 
      set_gdbarch_fp0_regnum (gdbarch, 25);
2834 
      set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
2835 
      set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
2836 
      break;
2837 
 
2838 
    case bfd_mach_sh3_dsp:
2839 
      set_gdbarch_register_name (gdbarch, sh_sh3_dsp_register_name);
2840 
      set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
2841 
      break;
2842 
 
2843 
    case bfd_mach_sh4:
2844 
    case bfd_mach_sh4a:
2845 
      set_gdbarch_register_name (gdbarch, sh_sh4_register_name);
2846 
      set_gdbarch_register_type (gdbarch, sh_sh4_register_type);
2847 
      set_gdbarch_fp0_regnum (gdbarch, 25);
2848 
      set_gdbarch_num_pseudo_regs (gdbarch, 13);
2849 
      set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
2850 
      set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
2851 
      set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
2852 
      set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
2853 
      break;
2854 
 
2855 
    case bfd_mach_sh4_nofpu:
2856 
    case bfd_mach_sh4a_nofpu:
2857 
    case bfd_mach_sh4_nommu_nofpu:
2858 
    case bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu:
2859 
    case bfd_mach_sh2a_or_sh4:
2860 
      set_gdbarch_register_name (gdbarch, sh_sh4_nofpu_register_name);
2861 
      break;
2862 
 
2863 
    case bfd_mach_sh4al_dsp:
2864 
      set_gdbarch_register_name (gdbarch, sh_sh4al_dsp_register_name);
2865 
      set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
2866 
      break;
2867 
 
2868 
    default:
2869 
      set_gdbarch_register_name (gdbarch, sh_sh_register_name);
2870 
      break;
2871 
    }
2872 
 
2873 
  /* Hook in ABI-specific overrides, if they have been registered.  */
2874 
  gdbarch_init_osabi (info, gdbarch);
2875 
 
2876 
  frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
2877 
  frame_unwind_append_sniffer (gdbarch, sh_frame_sniffer);
2878 
 
2879 
  return gdbarch;
2880 
}
2881 
 
2882 
extern initialize_file_ftype _initialize_sh_tdep;       /* -Wmissing-prototypes */
2883 
 
2884 
void
2885 
_initialize_sh_tdep (void)
2886 
{
2887 
  struct cmd_list_element *c;
2888 
 
2889 
  gdbarch_register (bfd_arch_sh, sh_gdbarch_init, NULL);
2890 
 
2891 
  add_com ("regs", class_vars, sh_show_regs_command, _("Print all registers"));
2892 
}

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