Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Target-dependent code for Hitachi Super-H, for GDB. |
b4a20239 AC |
2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 2000 Free Software |
3 | Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | /* | |
c5aa993b JM |
23 | Contributed by Steve Chamberlain |
24 | sac@cygnus.com | |
c906108c SS |
25 | */ |
26 | ||
27 | #include "defs.h" | |
28 | #include "frame.h" | |
29 | #include "obstack.h" | |
30 | #include "symtab.h" | |
31 | #include "symfile.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" /* for BEFORE_TEXT_END etc. */ | |
38 | #include "gdb_string.h" | |
b4a20239 | 39 | #include "arch-utils.h" |
fb409745 | 40 | #include "floatformat.h" |
c906108c | 41 | |
cc17453a EZ |
42 | #undef XMALLOC |
43 | #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE))) | |
44 | ||
53116e27 EZ |
45 | |
46 | /* Frame interpretation related functions. */ | |
cc17453a EZ |
47 | static gdbarch_breakpoint_from_pc_ftype sh_breakpoint_from_pc; |
48 | static gdbarch_frame_chain_ftype sh_frame_chain; | |
49 | static gdbarch_frame_saved_pc_ftype sh_frame_saved_pc; | |
50 | static gdbarch_skip_prologue_ftype sh_skip_prologue; | |
53116e27 | 51 | |
cc17453a EZ |
52 | static gdbarch_frame_init_saved_regs_ftype sh_nofp_frame_init_saved_regs; |
53 | static gdbarch_frame_init_saved_regs_ftype sh_fp_frame_init_saved_regs; | |
53116e27 EZ |
54 | static gdbarch_init_extra_frame_info_ftype sh_init_extra_frame_info; |
55 | static gdbarch_pop_frame_ftype sh_pop_frame; | |
56 | static gdbarch_saved_pc_after_call_ftype sh_saved_pc_after_call; | |
57 | static gdbarch_frame_args_address_ftype sh_frame_args_address; | |
58 | static gdbarch_frame_locals_address_ftype sh_frame_locals_address; | |
59 | ||
60 | /* Function call related functions. */ | |
cc17453a EZ |
61 | static gdbarch_extract_return_value_ftype sh_extract_return_value; |
62 | static gdbarch_extract_struct_value_address_ftype sh_extract_struct_value_address; | |
63 | static gdbarch_use_struct_convention_ftype sh_use_struct_convention; | |
cc17453a EZ |
64 | static gdbarch_store_struct_return_ftype sh_store_struct_return; |
65 | static gdbarch_push_arguments_ftype sh_push_arguments; | |
66 | static gdbarch_push_return_address_ftype sh_push_return_address; | |
53116e27 EZ |
67 | static gdbarch_coerce_float_to_double_ftype sh_coerce_float_to_double; |
68 | static gdbarch_store_return_value_ftype sh_default_store_return_value; | |
69 | static gdbarch_store_return_value_ftype sh3e_sh4_store_return_value; | |
cc17453a EZ |
70 | |
71 | static gdbarch_register_name_ftype sh_generic_register_name; | |
72 | static gdbarch_register_name_ftype sh_sh_register_name; | |
73 | static gdbarch_register_name_ftype sh_sh3_register_name; | |
74 | static gdbarch_register_name_ftype sh_sh3e_register_name; | |
75 | static gdbarch_register_name_ftype sh_sh_dsp_register_name; | |
76 | static gdbarch_register_name_ftype sh_sh3_dsp_register_name; | |
77 | ||
53116e27 EZ |
78 | /* Registers display related functions */ |
79 | static gdbarch_register_raw_size_ftype sh_default_register_raw_size; | |
80 | static gdbarch_register_raw_size_ftype sh_sh4_register_raw_size; | |
cc17453a | 81 | |
cc17453a | 82 | static gdbarch_register_virtual_size_ftype sh_register_virtual_size; |
53116e27 EZ |
83 | |
84 | static gdbarch_register_byte_ftype sh_default_register_byte; | |
85 | static gdbarch_register_byte_ftype sh_sh4_register_byte; | |
86 | ||
cc17453a | 87 | static gdbarch_register_virtual_type_ftype sh_sh3e_register_virtual_type; |
53116e27 | 88 | static gdbarch_register_virtual_type_ftype sh_sh4_register_virtual_type; |
cc17453a EZ |
89 | static gdbarch_register_virtual_type_ftype sh_default_register_virtual_type; |
90 | ||
53116e27 EZ |
91 | static void sh_generic_show_regs (void); |
92 | static void sh3_show_regs (void); | |
93 | static void sh3e_show_regs (void); | |
94 | static void sh3_dsp_show_regs (void); | |
95 | static void sh_dsp_show_regs (void); | |
96 | static void sh4_show_regs (void); | |
97 | static void sh_show_regs_command (char *, int); | |
98 | ||
99 | static struct type *sh_sh4_build_float_register_type (int high); | |
100 | ||
101 | static gdbarch_fetch_pseudo_register_ftype sh_fetch_pseudo_register; | |
102 | static gdbarch_store_pseudo_register_ftype sh_store_pseudo_register; | |
103 | static int fv_reg_base_num (int); | |
104 | static int dr_reg_base_num (int); | |
105 | static void do_fv_register_info (int fv_regnum); | |
106 | static void do_dr_register_info (int dr_regnum); | |
107 | static void sh_do_pseudo_register (int regnum); | |
108 | static void sh_do_fp_register (int regnum); | |
109 | static void sh_do_register (int regnum); | |
110 | static void sh_print_register (int regnum); | |
111 | ||
112 | void (*sh_show_regs) (void); | |
113 | ||
cc17453a | 114 | |
cc17453a EZ |
115 | /* Define other aspects of the stack frame. |
116 | we keep a copy of the worked out return pc lying around, since it | |
117 | is a useful bit of info */ | |
118 | ||
119 | struct frame_extra_info | |
120 | { | |
121 | CORE_ADDR return_pc; | |
122 | int leaf_function; | |
123 | int f_offset; | |
63978407 | 124 | }; |
c906108c | 125 | |
cc17453a | 126 | #if 0 |
091be84d CF |
127 | #ifdef _WIN32_WCE |
128 | char **sh_register_names = sh3_reg_names; | |
129 | #else | |
c906108c | 130 | char **sh_register_names = sh_generic_reg_names; |
091be84d | 131 | #endif |
cc17453a | 132 | #endif |
c906108c | 133 | |
cc17453a EZ |
134 | static char * |
135 | sh_generic_register_name (int reg_nr) | |
c5aa993b | 136 | { |
cc17453a | 137 | static char *register_names[] = |
c5aa993b | 138 | { |
cc17453a EZ |
139 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
140 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
141 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
142 | "fpul", "fpscr", | |
143 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", | |
144 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
145 | "ssr", "spc", | |
146 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
147 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", | |
148 | }; | |
149 | if (reg_nr < 0) | |
150 | return NULL; | |
151 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
152 | return NULL; | |
153 | return register_names[reg_nr]; | |
154 | } | |
155 | ||
156 | static char * | |
157 | sh_sh_register_name (int reg_nr) | |
158 | { | |
159 | static char *register_names[] = | |
63978407 | 160 | { |
cc17453a EZ |
161 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
162 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
163 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
164 | "", "", | |
165 | "", "", "", "", "", "", "", "", | |
166 | "", "", "", "", "", "", "", "", | |
167 | "", "", | |
168 | "", "", "", "", "", "", "", "", | |
169 | "", "", "", "", "", "", "", "", | |
170 | }; | |
171 | if (reg_nr < 0) | |
172 | return NULL; | |
173 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
174 | return NULL; | |
175 | return register_names[reg_nr]; | |
176 | } | |
177 | ||
178 | static char * | |
179 | sh_sh3_register_name (int reg_nr) | |
180 | { | |
181 | static char *register_names[] = | |
c5aa993b | 182 | { |
cc17453a EZ |
183 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
184 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
185 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
186 | "", "", | |
187 | "", "", "", "", "", "", "", "", | |
188 | "", "", "", "", "", "", "", "", | |
189 | "ssr", "spc", | |
190 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
191 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1" | |
192 | }; | |
193 | if (reg_nr < 0) | |
194 | return NULL; | |
195 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
196 | return NULL; | |
197 | return register_names[reg_nr]; | |
198 | } | |
199 | ||
200 | static char * | |
201 | sh_sh3e_register_name (int reg_nr) | |
202 | { | |
203 | static char *register_names[] = | |
63978407 | 204 | { |
cc17453a EZ |
205 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
206 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
207 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
208 | "fpul", "fpscr", | |
209 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", | |
210 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
211 | "ssr", "spc", | |
212 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
213 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", | |
214 | }; | |
215 | if (reg_nr < 0) | |
216 | return NULL; | |
217 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
218 | return NULL; | |
219 | return register_names[reg_nr]; | |
220 | } | |
221 | ||
222 | static char * | |
223 | sh_sh_dsp_register_name (int reg_nr) | |
224 | { | |
225 | static char *register_names[] = | |
c5aa993b | 226 | { |
cc17453a EZ |
227 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
228 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
229 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
230 | "", "dsr", | |
231 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", | |
232 | "y0", "y1", "", "", "", "", "", "mod", | |
233 | "", "", | |
234 | "rs", "re", "", "", "", "", "", "", | |
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 char * | |
245 | sh_sh3_dsp_register_name (int reg_nr) | |
246 | { | |
247 | static char *register_names[] = | |
c5aa993b | 248 | { |
cc17453a EZ |
249 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
250 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
251 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
252 | "", "dsr", | |
253 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", | |
254 | "y0", "y1", "", "", "", "", "", "mod", | |
255 | "ssr", "spc", | |
256 | "rs", "re", "", "", "", "", "", "", | |
257 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b" | |
258 | "", "", "", "", "", "", "", "", | |
259 | }; | |
260 | if (reg_nr < 0) | |
261 | return NULL; | |
262 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
263 | return NULL; | |
264 | return register_names[reg_nr]; | |
265 | } | |
266 | ||
53116e27 EZ |
267 | static char * |
268 | sh_sh4_register_name (int reg_nr) | |
269 | { | |
270 | static char *register_names[] = | |
271 | { | |
272 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
273 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
274 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
275 | "fpul", "fpscr", | |
276 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", | |
277 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
278 | "ssr", "spc", | |
279 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
280 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", | |
fe9f384f EZ |
281 | "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", |
282 | "fv0", "fv4", "fv8", "fv12", | |
53116e27 EZ |
283 | }; |
284 | if (reg_nr < 0) | |
285 | return NULL; | |
286 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
287 | return NULL; | |
288 | return register_names[reg_nr]; | |
289 | } | |
290 | ||
cc17453a | 291 | static unsigned char * |
fba45db2 | 292 | sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) |
cc17453a EZ |
293 | { |
294 | /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */ | |
295 | static unsigned char breakpoint[] = {0xc3, 0xc3}; | |
296 | ||
297 | *lenptr = sizeof (breakpoint); | |
298 | return breakpoint; | |
299 | } | |
c906108c SS |
300 | |
301 | /* Prologue looks like | |
c5aa993b JM |
302 | [mov.l <regs>,@-r15]... |
303 | [sts.l pr,@-r15] | |
304 | [mov.l r14,@-r15] | |
305 | [mov r15,r14] | |
8db62801 EZ |
306 | |
307 | Actually it can be more complicated than this. For instance, with | |
308 | newer gcc's: | |
309 | ||
310 | mov.l r14,@-r15 | |
311 | add #-12,r15 | |
312 | mov r15,r14 | |
313 | mov r4,r1 | |
314 | mov r5,r2 | |
315 | mov.l r6,@(4,r14) | |
316 | mov.l r7,@(8,r14) | |
317 | mov.b r1,@r14 | |
318 | mov r14,r1 | |
319 | mov r14,r1 | |
320 | add #2,r1 | |
321 | mov.w r2,@r1 | |
322 | ||
c5aa993b | 323 | */ |
c906108c | 324 | |
8db62801 EZ |
325 | /* STS.L PR,@-r15 0100111100100010 |
326 | r15-4-->r15, PR-->(r15) */ | |
c906108c | 327 | #define IS_STS(x) ((x) == 0x4f22) |
8db62801 EZ |
328 | |
329 | /* MOV.L Rm,@-r15 00101111mmmm0110 | |
330 | r15-4-->r15, Rm-->(R15) */ | |
c906108c | 331 | #define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) |
8db62801 | 332 | |
c906108c | 333 | #define GET_PUSHED_REG(x) (((x) >> 4) & 0xf) |
8db62801 EZ |
334 | |
335 | /* MOV r15,r14 0110111011110011 | |
336 | r15-->r14 */ | |
c906108c | 337 | #define IS_MOV_SP_FP(x) ((x) == 0x6ef3) |
8db62801 EZ |
338 | |
339 | /* ADD #imm,r15 01111111iiiiiiii | |
340 | r15+imm-->r15 */ | |
c906108c | 341 | #define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00) |
8db62801 | 342 | |
c906108c SS |
343 | #define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00) |
344 | #define IS_SHLL_R3(x) ((x) == 0x4300) | |
8db62801 EZ |
345 | |
346 | /* ADD r3,r15 0011111100111100 | |
347 | r15+r3-->r15 */ | |
c906108c | 348 | #define IS_ADD_R3SP(x) ((x) == 0x3f3c) |
8db62801 EZ |
349 | |
350 | /* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011 | |
8db62801 | 351 | FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011 |
8db62801 | 352 | FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */ |
c906108c | 353 | #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) |
c906108c | 354 | |
8db62801 | 355 | /* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 |
8db62801 | 356 | MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd |
8db62801 EZ |
357 | MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010 |
358 | where Rm is one of r4,r5,r6,r7 which are the argument registers. */ | |
359 | #define IS_ARG_MOV(x) \ | |
360 | (((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ | |
cc17453a EZ |
361 | || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ |
362 | || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))) | |
8db62801 EZ |
363 | |
364 | /* MOV.L Rm,@(disp,r14) 00011110mmmmdddd | |
365 | Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */ | |
366 | #define IS_MOV_R14(x) \ | |
cc17453a | 367 | ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) |
8db62801 EZ |
368 | |
369 | #define FPSCR_SZ (1 << 20) | |
c906108c | 370 | |
c906108c SS |
371 | /* Skip any prologue before the guts of a function */ |
372 | ||
8db62801 EZ |
373 | /* Skip the prologue using the debug information. If this fails we'll |
374 | fall back on the 'guess' method below. */ | |
375 | static CORE_ADDR | |
fba45db2 | 376 | after_prologue (CORE_ADDR pc) |
8db62801 EZ |
377 | { |
378 | struct symtab_and_line sal; | |
379 | CORE_ADDR func_addr, func_end; | |
380 | ||
381 | /* If we can not find the symbol in the partial symbol table, then | |
382 | there is no hope we can determine the function's start address | |
383 | with this code. */ | |
384 | if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
385 | return 0; | |
386 | ||
387 | /* Get the line associated with FUNC_ADDR. */ | |
388 | sal = find_pc_line (func_addr, 0); | |
389 | ||
390 | /* There are only two cases to consider. First, the end of the source line | |
391 | is within the function bounds. In that case we return the end of the | |
392 | source line. Second is the end of the source line extends beyond the | |
393 | bounds of the current function. We need to use the slow code to | |
394 | examine instructions in that case. */ | |
395 | if (sal.end < func_end) | |
396 | return sal.end; | |
397 | else | |
398 | return 0; | |
399 | } | |
400 | ||
401 | /* Here we look at each instruction in the function, and try to guess | |
402 | where the prologue ends. Unfortunately this is not always | |
403 | accurate. */ | |
404 | static CORE_ADDR | |
fba45db2 | 405 | skip_prologue_hard_way (CORE_ADDR start_pc) |
c906108c | 406 | { |
2bfa91ee | 407 | CORE_ADDR here, end; |
8db62801 | 408 | int updated_fp = 0; |
2bfa91ee EZ |
409 | |
410 | if (!start_pc) | |
411 | return 0; | |
412 | ||
413 | for (here = start_pc, end = start_pc + (2 * 28); here < end;) | |
c906108c | 414 | { |
2bfa91ee EZ |
415 | int w = read_memory_integer (here, 2); |
416 | here += 2; | |
417 | if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w) | |
8db62801 EZ |
418 | || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w) |
419 | || IS_ARG_MOV (w) || IS_MOV_R14 (w)) | |
2bfa91ee EZ |
420 | { |
421 | start_pc = here; | |
2bfa91ee | 422 | } |
8db62801 EZ |
423 | else if (IS_MOV_SP_FP (w)) |
424 | { | |
425 | start_pc = here; | |
426 | updated_fp = 1; | |
427 | } | |
428 | else | |
429 | /* Don't bail out yet, if we are before the copy of sp. */ | |
430 | if (updated_fp) | |
431 | break; | |
c906108c SS |
432 | } |
433 | ||
434 | return start_pc; | |
435 | } | |
436 | ||
cc17453a | 437 | static CORE_ADDR |
fba45db2 | 438 | sh_skip_prologue (CORE_ADDR pc) |
8db62801 EZ |
439 | { |
440 | CORE_ADDR post_prologue_pc; | |
441 | ||
442 | /* See if we can determine the end of the prologue via the symbol table. | |
443 | If so, then return either PC, or the PC after the prologue, whichever | |
444 | is greater. */ | |
445 | ||
446 | post_prologue_pc = after_prologue (pc); | |
447 | ||
448 | /* If after_prologue returned a useful address, then use it. Else | |
449 | fall back on the instruction skipping code. */ | |
450 | if (post_prologue_pc != 0) | |
451 | return max (pc, post_prologue_pc); | |
452 | else | |
453 | return (skip_prologue_hard_way (pc)); | |
454 | } | |
455 | ||
cc17453a EZ |
456 | /* Immediately after a function call, return the saved pc. |
457 | Can't always go through the frames for this because on some machines | |
458 | the new frame is not set up until the new function executes | |
459 | some instructions. | |
460 | ||
461 | The return address is the value saved in the PR register + 4 */ | |
462 | static CORE_ADDR | |
fba45db2 | 463 | sh_saved_pc_after_call (struct frame_info *frame) |
cc17453a EZ |
464 | { |
465 | return (ADDR_BITS_REMOVE(read_register(PR_REGNUM))); | |
466 | } | |
467 | ||
468 | /* Should call_function allocate stack space for a struct return? */ | |
469 | static int | |
fba45db2 | 470 | sh_use_struct_convention (int gcc_p, struct type *type) |
cc17453a EZ |
471 | { |
472 | return (TYPE_LENGTH (type) > 1); | |
473 | } | |
474 | ||
475 | /* Store the address of the place in which to copy the structure the | |
476 | subroutine will return. This is called from call_function. | |
477 | ||
478 | We store structs through a pointer passed in R0 */ | |
479 | static void | |
fba45db2 | 480 | sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) |
cc17453a EZ |
481 | { |
482 | write_register (STRUCT_RETURN_REGNUM, (addr)); | |
483 | } | |
c906108c | 484 | |
cc17453a EZ |
485 | /* Disassemble an instruction. */ |
486 | static int | |
fba45db2 | 487 | gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info) |
c906108c SS |
488 | { |
489 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
490 | return print_insn_sh (memaddr, info); | |
491 | else | |
492 | return print_insn_shl (memaddr, info); | |
493 | } | |
494 | ||
495 | /* Given a GDB frame, determine the address of the calling function's frame. | |
496 | This will be used to create a new GDB frame struct, and then | |
497 | INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. | |
498 | ||
499 | For us, the frame address is its stack pointer value, so we look up | |
500 | the function prologue to determine the caller's sp value, and return it. */ | |
cc17453a | 501 | static CORE_ADDR |
fba45db2 | 502 | sh_frame_chain (struct frame_info *frame) |
c906108c SS |
503 | { |
504 | if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) | |
505 | return frame->frame; /* dummy frame same as caller's frame */ | |
2bfa91ee | 506 | if (frame->pc && !inside_entry_file (frame->pc)) |
cc17453a | 507 | return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, 4); |
c906108c SS |
508 | else |
509 | return 0; | |
510 | } | |
511 | ||
512 | /* Find REGNUM on the stack. Otherwise, it's in an active register. One thing | |
513 | we might want to do here is to check REGNUM against the clobber mask, and | |
514 | somehow flag it as invalid if it isn't saved on the stack somewhere. This | |
515 | would provide a graceful failure mode when trying to get the value of | |
516 | caller-saves registers for an inner frame. */ | |
517 | ||
cc17453a | 518 | static CORE_ADDR |
fba45db2 | 519 | sh_find_callers_reg (struct frame_info *fi, int regnum) |
c906108c | 520 | { |
c906108c SS |
521 | for (; fi; fi = fi->next) |
522 | if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) | |
523 | /* When the caller requests PR from the dummy frame, we return PC because | |
c5aa993b | 524 | that's where the previous routine appears to have done a call from. */ |
c906108c | 525 | return generic_read_register_dummy (fi->pc, fi->frame, regnum); |
c5aa993b | 526 | else |
c906108c | 527 | { |
cc17453a | 528 | FRAME_INIT_SAVED_REGS (fi); |
2bfa91ee EZ |
529 | if (!fi->pc) |
530 | return 0; | |
cc17453a EZ |
531 | if (fi->saved_regs[regnum] != 0) |
532 | return read_memory_integer (fi->saved_regs[regnum], | |
c5aa993b | 533 | REGISTER_RAW_SIZE (regnum)); |
c906108c SS |
534 | } |
535 | return read_register (regnum); | |
536 | } | |
537 | ||
538 | /* Put here the code to store, into a struct frame_saved_regs, the | |
539 | addresses of the saved registers of frame described by FRAME_INFO. | |
540 | This includes special registers such as pc and fp saved in special | |
541 | ways in the stack frame. sp is even more special: the address we | |
542 | return for it IS the sp for the next frame. */ | |
cc17453a | 543 | static void |
fba45db2 | 544 | sh_nofp_frame_init_saved_regs (struct frame_info *fi) |
c906108c SS |
545 | { |
546 | int where[NUM_REGS]; | |
547 | int rn; | |
548 | int have_fp = 0; | |
549 | int depth; | |
550 | int pc; | |
551 | int opc; | |
552 | int insn; | |
553 | int r3_val = 0; | |
c5aa993b | 554 | char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); |
cc17453a EZ |
555 | |
556 | if (fi->saved_regs == NULL) | |
557 | frame_saved_regs_zalloc (fi); | |
558 | else | |
559 | memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); | |
560 | ||
561 | if (dummy_regs) | |
562 | { | |
563 | /* DANGER! This is ONLY going to work if the char buffer format of | |
564 | the saved registers is byte-for-byte identical to the | |
565 | CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ | |
566 | memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); | |
567 | return; | |
568 | } | |
569 | ||
570 | fi->extra_info->leaf_function = 1; | |
571 | fi->extra_info->f_offset = 0; | |
572 | ||
573 | for (rn = 0; rn < NUM_REGS; rn++) | |
574 | where[rn] = -1; | |
575 | ||
576 | depth = 0; | |
577 | ||
578 | /* Loop around examining the prologue insns until we find something | |
579 | that does not appear to be part of the prologue. But give up | |
580 | after 20 of them, since we're getting silly then. */ | |
581 | ||
582 | pc = get_pc_function_start (fi->pc); | |
583 | if (!pc) | |
584 | { | |
585 | fi->pc = 0; | |
586 | return; | |
587 | } | |
588 | ||
589 | for (opc = pc + (2 * 28); pc < opc; pc += 2) | |
590 | { | |
591 | insn = read_memory_integer (pc, 2); | |
592 | /* See where the registers will be saved to */ | |
593 | if (IS_PUSH (insn)) | |
594 | { | |
595 | rn = GET_PUSHED_REG (insn); | |
596 | where[rn] = depth; | |
597 | depth += 4; | |
598 | } | |
599 | else if (IS_STS (insn)) | |
600 | { | |
601 | where[PR_REGNUM] = depth; | |
602 | /* If we're storing the pr then this isn't a leaf */ | |
603 | fi->extra_info->leaf_function = 0; | |
604 | depth += 4; | |
605 | } | |
606 | else if (IS_MOV_R3 (insn)) | |
607 | { | |
608 | r3_val = ((insn & 0xff) ^ 0x80) - 0x80; | |
609 | } | |
610 | else if (IS_SHLL_R3 (insn)) | |
611 | { | |
612 | r3_val <<= 1; | |
613 | } | |
614 | else if (IS_ADD_R3SP (insn)) | |
615 | { | |
616 | depth += -r3_val; | |
617 | } | |
618 | else if (IS_ADD_SP (insn)) | |
619 | { | |
620 | depth -= ((insn & 0xff) ^ 0x80) - 0x80; | |
621 | } | |
622 | else if (IS_MOV_SP_FP (insn)) | |
623 | break; | |
624 | #if 0 /* This used to just stop when it found an instruction that | |
625 | was not considered part of the prologue. Now, we just | |
626 | keep going looking for likely instructions. */ | |
627 | else | |
628 | break; | |
629 | #endif | |
630 | } | |
631 | ||
632 | /* Now we know how deep things are, we can work out their addresses */ | |
633 | ||
634 | for (rn = 0; rn < NUM_REGS; rn++) | |
635 | { | |
636 | if (where[rn] >= 0) | |
637 | { | |
638 | if (rn == FP_REGNUM) | |
639 | have_fp = 1; | |
c906108c | 640 | |
cc17453a EZ |
641 | fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; |
642 | } | |
643 | else | |
644 | { | |
645 | fi->saved_regs[rn] = 0; | |
646 | } | |
647 | } | |
648 | ||
649 | if (have_fp) | |
650 | { | |
651 | fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); | |
652 | } | |
653 | else | |
654 | { | |
655 | fi->saved_regs[SP_REGNUM] = fi->frame - 4; | |
656 | } | |
657 | ||
658 | fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; | |
659 | /* Work out the return pc - either from the saved pr or the pr | |
660 | value */ | |
661 | } | |
662 | ||
663 | static void | |
fba45db2 | 664 | sh_fp_frame_init_saved_regs (struct frame_info *fi) |
cc17453a EZ |
665 | { |
666 | int where[NUM_REGS]; | |
667 | int rn; | |
668 | int have_fp = 0; | |
669 | int depth; | |
670 | int pc; | |
671 | int opc; | |
672 | int insn; | |
673 | int r3_val = 0; | |
674 | char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); | |
675 | ||
676 | if (fi->saved_regs == NULL) | |
677 | frame_saved_regs_zalloc (fi); | |
678 | else | |
679 | memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); | |
680 | ||
c906108c SS |
681 | if (dummy_regs) |
682 | { | |
683 | /* DANGER! This is ONLY going to work if the char buffer format of | |
c5aa993b JM |
684 | the saved registers is byte-for-byte identical to the |
685 | CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ | |
cc17453a | 686 | memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); |
c906108c SS |
687 | return; |
688 | } | |
689 | ||
cc17453a EZ |
690 | fi->extra_info->leaf_function = 1; |
691 | fi->extra_info->f_offset = 0; | |
c906108c SS |
692 | |
693 | for (rn = 0; rn < NUM_REGS; rn++) | |
694 | where[rn] = -1; | |
695 | ||
696 | depth = 0; | |
697 | ||
698 | /* Loop around examining the prologue insns until we find something | |
699 | that does not appear to be part of the prologue. But give up | |
700 | after 20 of them, since we're getting silly then. */ | |
701 | ||
2bfa91ee EZ |
702 | pc = get_pc_function_start (fi->pc); |
703 | if (!pc) | |
c906108c | 704 | { |
2bfa91ee EZ |
705 | fi->pc = 0; |
706 | return; | |
707 | } | |
708 | ||
709 | for (opc = pc + (2 * 28); pc < opc; pc += 2) | |
710 | { | |
711 | insn = read_memory_integer (pc, 2); | |
c906108c SS |
712 | /* See where the registers will be saved to */ |
713 | if (IS_PUSH (insn)) | |
714 | { | |
c906108c SS |
715 | rn = GET_PUSHED_REG (insn); |
716 | where[rn] = depth; | |
c906108c SS |
717 | depth += 4; |
718 | } | |
719 | else if (IS_STS (insn)) | |
720 | { | |
c906108c | 721 | where[PR_REGNUM] = depth; |
c906108c | 722 | /* If we're storing the pr then this isn't a leaf */ |
cc17453a | 723 | fi->extra_info->leaf_function = 0; |
c906108c SS |
724 | depth += 4; |
725 | } | |
726 | else if (IS_MOV_R3 (insn)) | |
727 | { | |
728 | r3_val = ((insn & 0xff) ^ 0x80) - 0x80; | |
c906108c SS |
729 | } |
730 | else if (IS_SHLL_R3 (insn)) | |
731 | { | |
732 | r3_val <<= 1; | |
c906108c SS |
733 | } |
734 | else if (IS_ADD_R3SP (insn)) | |
735 | { | |
736 | depth += -r3_val; | |
c906108c SS |
737 | } |
738 | else if (IS_ADD_SP (insn)) | |
739 | { | |
c906108c | 740 | depth -= ((insn & 0xff) ^ 0x80) - 0x80; |
c906108c SS |
741 | } |
742 | else if (IS_FMOV (insn)) | |
743 | { | |
cc17453a | 744 | if (read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM) & FPSCR_SZ) |
c906108c SS |
745 | { |
746 | depth += 8; | |
747 | } | |
748 | else | |
749 | { | |
750 | depth += 4; | |
751 | } | |
752 | } | |
2bfa91ee EZ |
753 | else if (IS_MOV_SP_FP (insn)) |
754 | break; | |
755 | #if 0 /* This used to just stop when it found an instruction that | |
756 | was not considered part of the prologue. Now, we just | |
757 | keep going looking for likely instructions. */ | |
c906108c SS |
758 | else |
759 | break; | |
2bfa91ee | 760 | #endif |
c906108c SS |
761 | } |
762 | ||
763 | /* Now we know how deep things are, we can work out their addresses */ | |
764 | ||
765 | for (rn = 0; rn < NUM_REGS; rn++) | |
766 | { | |
767 | if (where[rn] >= 0) | |
768 | { | |
769 | if (rn == FP_REGNUM) | |
770 | have_fp = 1; | |
771 | ||
cc17453a | 772 | fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; |
c906108c SS |
773 | } |
774 | else | |
775 | { | |
cc17453a | 776 | fi->saved_regs[rn] = 0; |
c906108c SS |
777 | } |
778 | } | |
779 | ||
780 | if (have_fp) | |
781 | { | |
cc17453a | 782 | fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); |
c906108c SS |
783 | } |
784 | else | |
785 | { | |
cc17453a | 786 | fi->saved_regs[SP_REGNUM] = fi->frame - 4; |
c906108c SS |
787 | } |
788 | ||
cc17453a | 789 | fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; |
c906108c SS |
790 | /* Work out the return pc - either from the saved pr or the pr |
791 | value */ | |
792 | } | |
793 | ||
cc17453a EZ |
794 | /* Initialize the extra info saved in a FRAME */ |
795 | static void | |
fba45db2 | 796 | sh_init_extra_frame_info (int fromleaf, struct frame_info *fi) |
c906108c | 797 | { |
cc17453a EZ |
798 | |
799 | fi->extra_info = (struct frame_extra_info *) | |
800 | frame_obstack_alloc (sizeof (struct frame_extra_info)); | |
c906108c SS |
801 | |
802 | if (fi->next) | |
803 | fi->pc = FRAME_SAVED_PC (fi->next); | |
804 | ||
805 | if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) | |
806 | { | |
807 | /* We need to setup fi->frame here because run_stack_dummy gets it wrong | |
c5aa993b JM |
808 | by assuming it's always FP. */ |
809 | fi->frame = generic_read_register_dummy (fi->pc, fi->frame, | |
810 | SP_REGNUM); | |
cc17453a EZ |
811 | fi->extra_info->return_pc = generic_read_register_dummy (fi->pc, fi->frame, |
812 | PC_REGNUM); | |
813 | fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4); | |
814 | fi->extra_info->leaf_function = 0; | |
c906108c SS |
815 | return; |
816 | } | |
817 | else | |
818 | { | |
cc17453a EZ |
819 | FRAME_INIT_SAVED_REGS (fi); |
820 | fi->extra_info->return_pc = sh_find_callers_reg (fi, PR_REGNUM); | |
c906108c SS |
821 | } |
822 | } | |
823 | ||
cc17453a EZ |
824 | /* Extract from an array REGBUF containing the (raw) register state |
825 | the address in which a function should return its structure value, | |
826 | as a CORE_ADDR (or an expression that can be used as one). */ | |
827 | CORE_ADDR | |
828 | static sh_extract_struct_value_address (regbuf) | |
829 | char *regbuf; | |
830 | { | |
831 | return (extract_address ((regbuf), REGISTER_RAW_SIZE (0))); | |
832 | } | |
833 | ||
834 | static CORE_ADDR | |
fba45db2 | 835 | sh_frame_saved_pc (struct frame_info *frame) |
cc17453a EZ |
836 | { |
837 | return ((frame)->extra_info->return_pc); | |
838 | } | |
839 | ||
840 | static CORE_ADDR | |
fba45db2 | 841 | sh_frame_args_address (struct frame_info *fi) |
cc17453a EZ |
842 | { |
843 | return (fi)->frame; | |
844 | } | |
845 | ||
846 | static CORE_ADDR | |
fba45db2 | 847 | sh_frame_locals_address (struct frame_info *fi) |
cc17453a EZ |
848 | { |
849 | return (fi)->frame; | |
850 | } | |
851 | ||
c906108c SS |
852 | /* Discard from the stack the innermost frame, |
853 | restoring all saved registers. */ | |
cc17453a | 854 | static void |
fba45db2 | 855 | sh_pop_frame (void) |
c906108c SS |
856 | { |
857 | register struct frame_info *frame = get_current_frame (); | |
858 | register CORE_ADDR fp; | |
859 | register int regnum; | |
c906108c SS |
860 | |
861 | if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) | |
862 | generic_pop_dummy_frame (); | |
863 | else | |
c5aa993b JM |
864 | { |
865 | fp = FRAME_FP (frame); | |
cc17453a | 866 | FRAME_INIT_SAVED_REGS (frame); |
c906108c | 867 | |
c5aa993b JM |
868 | /* Copy regs from where they were saved in the frame */ |
869 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
cc17453a EZ |
870 | if (frame->saved_regs[regnum]) |
871 | write_register (regnum, read_memory_integer (frame->saved_regs[regnum], 4)); | |
c906108c | 872 | |
cc17453a | 873 | write_register (PC_REGNUM, frame->extra_info->return_pc); |
c5aa993b JM |
874 | write_register (SP_REGNUM, fp + 4); |
875 | } | |
c906108c SS |
876 | flush_cached_frames (); |
877 | } | |
878 | ||
879 | /* Function: push_arguments | |
880 | Setup the function arguments for calling a function in the inferior. | |
881 | ||
882 | On the Hitachi SH architecture, there are four registers (R4 to R7) | |
883 | which are dedicated for passing function arguments. Up to the first | |
884 | four arguments (depending on size) may go into these registers. | |
885 | The rest go on the stack. | |
886 | ||
887 | Arguments that are smaller than 4 bytes will still take up a whole | |
888 | register or a whole 32-bit word on the stack, and will be | |
889 | right-justified in the register or the stack word. This includes | |
890 | chars, shorts, and small aggregate types. | |
891 | ||
892 | Arguments that are larger than 4 bytes may be split between two or | |
893 | more registers. If there are not enough registers free, an argument | |
894 | may be passed partly in a register (or registers), and partly on the | |
895 | stack. This includes doubles, long longs, and larger aggregates. | |
896 | As far as I know, there is no upper limit to the size of aggregates | |
897 | that will be passed in this way; in other words, the convention of | |
898 | passing a pointer to a large aggregate instead of a copy is not used. | |
899 | ||
900 | An exceptional case exists for struct arguments (and possibly other | |
901 | aggregates such as arrays) if the size is larger than 4 bytes but | |
902 | not a multiple of 4 bytes. In this case the argument is never split | |
903 | between the registers and the stack, but instead is copied in its | |
904 | entirety onto the stack, AND also copied into as many registers as | |
905 | there is room for. In other words, space in registers permitting, | |
906 | two copies of the same argument are passed in. As far as I can tell, | |
907 | only the one on the stack is used, although that may be a function | |
908 | of the level of compiler optimization. I suspect this is a compiler | |
909 | bug. Arguments of these odd sizes are left-justified within the | |
910 | word (as opposed to arguments smaller than 4 bytes, which are | |
911 | right-justified). | |
c5aa993b | 912 | |
c906108c SS |
913 | If the function is to return an aggregate type such as a struct, it |
914 | is either returned in the normal return value register R0 (if its | |
915 | size is no greater than one byte), or else the caller must allocate | |
916 | space into which the callee will copy the return value (if the size | |
917 | is greater than one byte). In this case, a pointer to the return | |
918 | value location is passed into the callee in register R2, which does | |
919 | not displace any of the other arguments passed in via registers R4 | |
920 | to R7. */ | |
921 | ||
cc17453a | 922 | static CORE_ADDR |
34e9d9bb EZ |
923 | sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
924 | int struct_return, CORE_ADDR struct_addr) | |
c906108c SS |
925 | { |
926 | int stack_offset, stack_alloc; | |
927 | int argreg; | |
928 | int argnum; | |
929 | struct type *type; | |
930 | CORE_ADDR regval; | |
931 | char *val; | |
932 | char valbuf[4]; | |
933 | int len; | |
934 | int odd_sized_struct; | |
935 | ||
936 | /* first force sp to a 4-byte alignment */ | |
937 | sp = sp & ~3; | |
938 | ||
939 | /* The "struct return pointer" pseudo-argument has its own dedicated | |
940 | register */ | |
941 | if (struct_return) | |
c5aa993b | 942 | write_register (STRUCT_RETURN_REGNUM, struct_addr); |
c906108c SS |
943 | |
944 | /* Now make sure there's space on the stack */ | |
cc17453a | 945 | for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) |
c5aa993b JM |
946 | stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); |
947 | sp -= stack_alloc; /* make room on stack for args */ | |
c906108c | 948 | |
c906108c SS |
949 | /* Now load as many as possible of the first arguments into |
950 | registers, and push the rest onto the stack. There are 16 bytes | |
951 | in four registers available. Loop thru args from first to last. */ | |
952 | ||
953 | argreg = ARG0_REGNUM; | |
954 | for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) | |
955 | { | |
956 | type = VALUE_TYPE (args[argnum]); | |
c5aa993b JM |
957 | len = TYPE_LENGTH (type); |
958 | memset (valbuf, 0, sizeof (valbuf)); | |
c906108c | 959 | if (len < 4) |
cc17453a EZ |
960 | { |
961 | /* value gets right-justified in the register or stack word */ | |
c5aa993b JM |
962 | memcpy (valbuf + (4 - len), |
963 | (char *) VALUE_CONTENTS (args[argnum]), len); | |
964 | val = valbuf; | |
965 | } | |
c906108c | 966 | else |
c5aa993b | 967 | val = (char *) VALUE_CONTENTS (args[argnum]); |
c906108c SS |
968 | |
969 | if (len > 4 && (len & 3) != 0) | |
c5aa993b JM |
970 | odd_sized_struct = 1; /* such structs go entirely on stack */ |
971 | else | |
c906108c SS |
972 | odd_sized_struct = 0; |
973 | while (len > 0) | |
974 | { | |
975 | if (argreg > ARGLAST_REGNUM || odd_sized_struct) | |
c5aa993b | 976 | { /* must go on the stack */ |
c906108c SS |
977 | write_memory (sp + stack_offset, val, 4); |
978 | stack_offset += 4; | |
979 | } | |
980 | /* NOTE WELL!!!!! This is not an "else if" clause!!! | |
981 | That's because some *&^%$ things get passed on the stack | |
982 | AND in the registers! */ | |
983 | if (argreg <= ARGLAST_REGNUM) | |
c5aa993b JM |
984 | { /* there's room in a register */ |
985 | regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); | |
c906108c SS |
986 | write_register (argreg++, regval); |
987 | } | |
988 | /* Store the value 4 bytes at a time. This means that things | |
989 | larger than 4 bytes may go partly in registers and partly | |
990 | on the stack. */ | |
c5aa993b JM |
991 | len -= REGISTER_RAW_SIZE (argreg); |
992 | val += REGISTER_RAW_SIZE (argreg); | |
c906108c SS |
993 | } |
994 | } | |
995 | return sp; | |
996 | } | |
997 | ||
998 | /* Function: push_return_address (pc) | |
999 | Set up the return address for the inferior function call. | |
1000 | Needed for targets where we don't actually execute a JSR/BSR instruction */ | |
1001 | ||
cc17453a | 1002 | static CORE_ADDR |
fba45db2 | 1003 | sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp) |
c906108c SS |
1004 | { |
1005 | write_register (PR_REGNUM, CALL_DUMMY_ADDRESS ()); | |
1006 | return sp; | |
1007 | } | |
1008 | ||
1009 | /* Function: fix_call_dummy | |
1010 | Poke the callee function's address into the destination part of | |
1011 | the CALL_DUMMY. The address is actually stored in a data word | |
1012 | following the actualy CALL_DUMMY instructions, which will load | |
1013 | it into a register using PC-relative addressing. This function | |
1014 | expects the CALL_DUMMY to look like this: | |
1015 | ||
c5aa993b JM |
1016 | mov.w @(2,PC), R8 |
1017 | jsr @R8 | |
1018 | nop | |
1019 | trap | |
1020 | <destination> | |
1021 | */ | |
c906108c SS |
1022 | |
1023 | #if 0 | |
1024 | void | |
fba45db2 KB |
1025 | sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, |
1026 | value_ptr *args, struct type *type, int gcc_p) | |
c906108c SS |
1027 | { |
1028 | *(unsigned long *) (dummy + 8) = fun; | |
1029 | } | |
1030 | #endif | |
1031 | ||
cc17453a EZ |
1032 | static int |
1033 | sh_coerce_float_to_double (struct type *formal, struct type *actual) | |
1034 | { | |
1035 | return 1; | |
1036 | } | |
c906108c | 1037 | |
cc17453a EZ |
1038 | /* Find a function's return value in the appropriate registers (in |
1039 | regbuf), and copy it into valbuf. Extract from an array REGBUF | |
1040 | containing the (raw) register state a function return value of type | |
1041 | TYPE, and copy that, in virtual format, into VALBUF. */ | |
1042 | static void | |
fba45db2 | 1043 | sh_extract_return_value (struct type *type, char *regbuf, char *valbuf) |
c906108c | 1044 | { |
cc17453a | 1045 | int len = TYPE_LENGTH (type); |
c906108c | 1046 | |
cc17453a EZ |
1047 | if (len <= 4) |
1048 | memcpy (valbuf, ((char *) regbuf) + 4 - len, len); | |
1049 | else if (len <= 8) | |
1050 | memcpy (valbuf, ((char *) regbuf) + 8 - len, len); | |
1051 | else | |
1052 | error ("bad size for return value"); | |
1053 | } | |
c906108c | 1054 | |
cc17453a EZ |
1055 | /* Write into appropriate registers a function return value |
1056 | of type TYPE, given in virtual format. | |
1057 | If the architecture is sh4 or sh3e, store a function's return value | |
1058 | in the R0 general register or in the FP0 floating point register, | |
1059 | depending on the type of the return value. In all the other cases | |
1060 | the result is stored in r0. */ | |
1061 | static void | |
1062 | sh_default_store_return_value (struct type *type, char *valbuf) | |
1063 | { | |
1064 | write_register_bytes (REGISTER_BYTE (0), | |
1065 | valbuf, TYPE_LENGTH (type)); | |
1066 | } | |
c906108c | 1067 | |
cc17453a EZ |
1068 | static void |
1069 | sh3e_sh4_store_return_value (struct type *type, char *valbuf) | |
1070 | { | |
1071 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
1072 | write_register_bytes (REGISTER_BYTE (FP0_REGNUM), | |
1073 | valbuf, TYPE_LENGTH (type)); | |
1074 | else | |
1075 | write_register_bytes (REGISTER_BYTE (0), | |
1076 | valbuf, TYPE_LENGTH (type)); | |
c906108c SS |
1077 | } |
1078 | ||
cc17453a | 1079 | |
c906108c SS |
1080 | /* Print the registers in a form similar to the E7000 */ |
1081 | ||
1082 | static void | |
fba45db2 | 1083 | sh_generic_show_regs (void) |
c906108c | 1084 | { |
cc17453a EZ |
1085 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1086 | paddr (read_register (PC_REGNUM)), | |
1087 | (long) read_register (SR_REGNUM), | |
1088 | (long) read_register (PR_REGNUM), | |
1089 | (long) read_register (MACH_REGNUM), | |
1090 | (long) read_register (MACL_REGNUM)); | |
1091 | ||
1092 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1093 | (long) read_register (GBR_REGNUM), | |
1094 | (long) read_register (VBR_REGNUM)); | |
1095 | ||
1096 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1097 | (long) read_register (0), | |
1098 | (long) read_register (1), | |
1099 | (long) read_register (2), | |
1100 | (long) read_register (3), | |
1101 | (long) read_register (4), | |
1102 | (long) read_register (5), | |
1103 | (long) read_register (6), | |
1104 | (long) read_register (7)); | |
1105 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1106 | (long) read_register (8), | |
1107 | (long) read_register (9), | |
1108 | (long) read_register (10), | |
1109 | (long) read_register (11), | |
1110 | (long) read_register (12), | |
1111 | (long) read_register (13), | |
1112 | (long) read_register (14), | |
1113 | (long) read_register (15)); | |
1114 | } | |
c906108c | 1115 | |
cc17453a | 1116 | static void |
fba45db2 | 1117 | sh3_show_regs (void) |
cc17453a | 1118 | { |
d4f3574e SS |
1119 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1120 | paddr (read_register (PC_REGNUM)), | |
1121 | (long) read_register (SR_REGNUM), | |
1122 | (long) read_register (PR_REGNUM), | |
1123 | (long) read_register (MACH_REGNUM), | |
1124 | (long) read_register (MACL_REGNUM)); | |
1125 | ||
1126 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1127 | (long) read_register (GBR_REGNUM), | |
1128 | (long) read_register (VBR_REGNUM)); | |
cc17453a EZ |
1129 | printf_filtered (" SSR=%08lx SPC=%08lx", |
1130 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1131 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
c906108c | 1132 | |
d4f3574e SS |
1133 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
1134 | (long) read_register (0), | |
1135 | (long) read_register (1), | |
1136 | (long) read_register (2), | |
1137 | (long) read_register (3), | |
1138 | (long) read_register (4), | |
1139 | (long) read_register (5), | |
1140 | (long) read_register (6), | |
1141 | (long) read_register (7)); | |
1142 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1143 | (long) read_register (8), | |
1144 | (long) read_register (9), | |
1145 | (long) read_register (10), | |
1146 | (long) read_register (11), | |
1147 | (long) read_register (12), | |
1148 | (long) read_register (13), | |
1149 | (long) read_register (14), | |
1150 | (long) read_register (15)); | |
c906108c SS |
1151 | } |
1152 | ||
53116e27 | 1153 | |
cc17453a | 1154 | static void |
fba45db2 | 1155 | sh3e_show_regs (void) |
cc17453a EZ |
1156 | { |
1157 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1158 | paddr (read_register (PC_REGNUM)), | |
1159 | (long) read_register (SR_REGNUM), | |
1160 | (long) read_register (PR_REGNUM), | |
1161 | (long) read_register (MACH_REGNUM), | |
1162 | (long) read_register (MACL_REGNUM)); | |
1163 | ||
1164 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1165 | (long) read_register (GBR_REGNUM), | |
1166 | (long) read_register (VBR_REGNUM)); | |
1167 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1168 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1169 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1170 | printf_filtered (" FPUL=%08lx FPSCR=%08lx", | |
1171 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM), | |
1172 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM)); | |
c906108c | 1173 | |
cc17453a EZ |
1174 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
1175 | (long) read_register (0), | |
1176 | (long) read_register (1), | |
1177 | (long) read_register (2), | |
1178 | (long) read_register (3), | |
1179 | (long) read_register (4), | |
1180 | (long) read_register (5), | |
1181 | (long) read_register (6), | |
1182 | (long) read_register (7)); | |
1183 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1184 | (long) read_register (8), | |
1185 | (long) read_register (9), | |
1186 | (long) read_register (10), | |
1187 | (long) read_register (11), | |
1188 | (long) read_register (12), | |
1189 | (long) read_register (13), | |
1190 | (long) read_register (14), | |
1191 | (long) read_register (15)); | |
1192 | ||
1193 | printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1194 | (long) read_register (FP0_REGNUM + 0), | |
1195 | (long) read_register (FP0_REGNUM + 1), | |
1196 | (long) read_register (FP0_REGNUM + 2), | |
1197 | (long) read_register (FP0_REGNUM + 3), | |
1198 | (long) read_register (FP0_REGNUM + 4), | |
1199 | (long) read_register (FP0_REGNUM + 5), | |
1200 | (long) read_register (FP0_REGNUM + 6), | |
1201 | (long) read_register (FP0_REGNUM + 7)); | |
1202 | printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1203 | (long) read_register (FP0_REGNUM + 8), | |
1204 | (long) read_register (FP0_REGNUM + 9), | |
1205 | (long) read_register (FP0_REGNUM + 10), | |
1206 | (long) read_register (FP0_REGNUM + 11), | |
1207 | (long) read_register (FP0_REGNUM + 12), | |
1208 | (long) read_register (FP0_REGNUM + 13), | |
1209 | (long) read_register (FP0_REGNUM + 14), | |
1210 | (long) read_register (FP0_REGNUM + 15)); | |
1211 | } | |
1212 | ||
1213 | static void | |
fba45db2 | 1214 | sh3_dsp_show_regs (void) |
c906108c | 1215 | { |
cc17453a EZ |
1216 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1217 | paddr (read_register (PC_REGNUM)), | |
1218 | (long) read_register (SR_REGNUM), | |
1219 | (long) read_register (PR_REGNUM), | |
1220 | (long) read_register (MACH_REGNUM), | |
1221 | (long) read_register (MACL_REGNUM)); | |
c906108c | 1222 | |
cc17453a EZ |
1223 | printf_filtered ("GBR=%08lx VBR=%08lx", |
1224 | (long) read_register (GBR_REGNUM), | |
1225 | (long) read_register (VBR_REGNUM)); | |
1226 | ||
1227 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1228 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1229 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1230 | ||
1231 | printf_filtered (" DSR=%08lx", | |
1232 | (long) read_register (gdbarch_tdep (current_gdbarch)->DSR_REGNUM)); | |
1233 | ||
1234 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1235 | (long) read_register (0), | |
1236 | (long) read_register (1), | |
1237 | (long) read_register (2), | |
1238 | (long) read_register (3), | |
1239 | (long) read_register (4), | |
1240 | (long) read_register (5), | |
1241 | (long) read_register (6), | |
1242 | (long) read_register (7)); | |
1243 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1244 | (long) read_register (8), | |
1245 | (long) read_register (9), | |
1246 | (long) read_register (10), | |
1247 | (long) read_register (11), | |
1248 | (long) read_register (12), | |
1249 | (long) read_register (13), | |
1250 | (long) read_register (14), | |
1251 | (long) read_register (15)); | |
1252 | ||
1253 | printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", | |
1254 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0G_REGNUM) & 0xff, | |
1255 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0_REGNUM), | |
1256 | (long) read_register (gdbarch_tdep (current_gdbarch)->M0_REGNUM), | |
1257 | (long) read_register (gdbarch_tdep (current_gdbarch)->X0_REGNUM), | |
1258 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y0_REGNUM), | |
1259 | (long) read_register (gdbarch_tdep (current_gdbarch)->RS_REGNUM), | |
1260 | (long) read_register (gdbarch_tdep (current_gdbarch)->MOD_REGNUM)); | |
1261 | printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", | |
1262 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1G_REGNUM) & 0xff, | |
1263 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1_REGNUM), | |
1264 | (long) read_register (gdbarch_tdep (current_gdbarch)->M1_REGNUM), | |
1265 | (long) read_register (gdbarch_tdep (current_gdbarch)->X1_REGNUM), | |
1266 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y1_REGNUM), | |
1267 | (long) read_register (gdbarch_tdep (current_gdbarch)->RE_REGNUM)); | |
c906108c SS |
1268 | } |
1269 | ||
cc17453a | 1270 | static void |
fba45db2 | 1271 | sh4_show_regs (void) |
cc17453a EZ |
1272 | { |
1273 | int pr = read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM) & 0x80000; | |
1274 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1275 | paddr (read_register (PC_REGNUM)), | |
1276 | (long) read_register (SR_REGNUM), | |
1277 | (long) read_register (PR_REGNUM), | |
1278 | (long) read_register (MACH_REGNUM), | |
1279 | (long) read_register (MACL_REGNUM)); | |
1280 | ||
1281 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1282 | (long) read_register (GBR_REGNUM), | |
1283 | (long) read_register (VBR_REGNUM)); | |
1284 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1285 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1286 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1287 | printf_filtered (" FPUL=%08lx FPSCR=%08lx", | |
1288 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM), | |
1289 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM)); | |
1290 | ||
1291 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1292 | (long) read_register (0), | |
1293 | (long) read_register (1), | |
1294 | (long) read_register (2), | |
1295 | (long) read_register (3), | |
1296 | (long) read_register (4), | |
1297 | (long) read_register (5), | |
1298 | (long) read_register (6), | |
1299 | (long) read_register (7)); | |
1300 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1301 | (long) read_register (8), | |
1302 | (long) read_register (9), | |
1303 | (long) read_register (10), | |
1304 | (long) read_register (11), | |
1305 | (long) read_register (12), | |
1306 | (long) read_register (13), | |
1307 | (long) read_register (14), | |
1308 | (long) read_register (15)); | |
1309 | ||
1310 | printf_filtered ((pr | |
1311 | ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" | |
1312 | : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1313 | (long) read_register (FP0_REGNUM + 0), | |
1314 | (long) read_register (FP0_REGNUM + 1), | |
1315 | (long) read_register (FP0_REGNUM + 2), | |
1316 | (long) read_register (FP0_REGNUM + 3), | |
1317 | (long) read_register (FP0_REGNUM + 4), | |
1318 | (long) read_register (FP0_REGNUM + 5), | |
1319 | (long) read_register (FP0_REGNUM + 6), | |
1320 | (long) read_register (FP0_REGNUM + 7)); | |
1321 | printf_filtered ((pr | |
1322 | ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" | |
1323 | : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1324 | (long) read_register (FP0_REGNUM + 8), | |
1325 | (long) read_register (FP0_REGNUM + 9), | |
1326 | (long) read_register (FP0_REGNUM + 10), | |
1327 | (long) read_register (FP0_REGNUM + 11), | |
1328 | (long) read_register (FP0_REGNUM + 12), | |
1329 | (long) read_register (FP0_REGNUM + 13), | |
1330 | (long) read_register (FP0_REGNUM + 14), | |
1331 | (long) read_register (FP0_REGNUM + 15)); | |
1332 | } | |
1333 | ||
1334 | static void | |
fba45db2 | 1335 | sh_dsp_show_regs (void) |
cc17453a EZ |
1336 | { |
1337 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1338 | paddr (read_register (PC_REGNUM)), | |
1339 | (long) read_register (SR_REGNUM), | |
1340 | (long) read_register (PR_REGNUM), | |
1341 | (long) read_register (MACH_REGNUM), | |
1342 | (long) read_register (MACL_REGNUM)); | |
1343 | ||
1344 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1345 | (long) read_register (GBR_REGNUM), | |
1346 | (long) read_register (VBR_REGNUM)); | |
1347 | ||
1348 | printf_filtered (" DSR=%08lx", | |
1349 | (long) read_register (gdbarch_tdep (current_gdbarch)->DSR_REGNUM)); | |
1350 | ||
1351 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1352 | (long) read_register (0), | |
1353 | (long) read_register (1), | |
1354 | (long) read_register (2), | |
1355 | (long) read_register (3), | |
1356 | (long) read_register (4), | |
1357 | (long) read_register (5), | |
1358 | (long) read_register (6), | |
1359 | (long) read_register (7)); | |
1360 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1361 | (long) read_register (8), | |
1362 | (long) read_register (9), | |
1363 | (long) read_register (10), | |
1364 | (long) read_register (11), | |
1365 | (long) read_register (12), | |
1366 | (long) read_register (13), | |
1367 | (long) read_register (14), | |
1368 | (long) read_register (15)); | |
1369 | ||
1370 | printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", | |
1371 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0G_REGNUM) & 0xff, | |
1372 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0_REGNUM), | |
1373 | (long) read_register (gdbarch_tdep (current_gdbarch)->M0_REGNUM), | |
1374 | (long) read_register (gdbarch_tdep (current_gdbarch)->X0_REGNUM), | |
1375 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y0_REGNUM), | |
1376 | (long) read_register (gdbarch_tdep (current_gdbarch)->RS_REGNUM), | |
1377 | (long) read_register (gdbarch_tdep (current_gdbarch)->MOD_REGNUM)); | |
1378 | printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", | |
1379 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1G_REGNUM) & 0xff, | |
1380 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1_REGNUM), | |
1381 | (long) read_register (gdbarch_tdep (current_gdbarch)->M1_REGNUM), | |
1382 | (long) read_register (gdbarch_tdep (current_gdbarch)->X1_REGNUM), | |
1383 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y1_REGNUM), | |
1384 | (long) read_register (gdbarch_tdep (current_gdbarch)->RE_REGNUM)); | |
1385 | } | |
1386 | ||
53116e27 EZ |
1387 | void sh_show_regs_command (char *args, int from_tty) |
1388 | { | |
1389 | if (sh_show_regs) | |
1390 | (*sh_show_regs)(); | |
1391 | } | |
1392 | ||
cc17453a EZ |
1393 | /* Index within `registers' of the first byte of the space for |
1394 | register N. */ | |
1395 | static int | |
fba45db2 | 1396 | sh_default_register_byte (int reg_nr) |
8db62801 | 1397 | { |
cc17453a EZ |
1398 | return (reg_nr * 4); |
1399 | } | |
1400 | ||
53116e27 | 1401 | static int |
fba45db2 | 1402 | sh_sh4_register_byte (int reg_nr) |
53116e27 EZ |
1403 | { |
1404 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
fe9f384f | 1405 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) |
53116e27 EZ |
1406 | return (dr_reg_base_num (reg_nr) * 4); |
1407 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
fe9f384f | 1408 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1409 | return (fv_reg_base_num (reg_nr) * 4); |
1410 | else | |
1411 | return (reg_nr * 4); | |
1412 | } | |
1413 | ||
cc17453a EZ |
1414 | /* Number of bytes of storage in the actual machine representation for |
1415 | register REG_NR. */ | |
1416 | static int | |
fba45db2 | 1417 | sh_default_register_raw_size (int reg_nr) |
cc17453a EZ |
1418 | { |
1419 | return 4; | |
1420 | } | |
1421 | ||
53116e27 | 1422 | static int |
fba45db2 | 1423 | sh_sh4_register_raw_size (int reg_nr) |
53116e27 EZ |
1424 | { |
1425 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
fe9f384f | 1426 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) |
53116e27 EZ |
1427 | return 8; |
1428 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
fe9f384f | 1429 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1430 | return 16; |
1431 | else | |
1432 | return 4; | |
1433 | } | |
1434 | ||
cc17453a EZ |
1435 | /* Number of bytes of storage in the program's representation |
1436 | for register N. */ | |
1437 | static int | |
fba45db2 | 1438 | sh_register_virtual_size (int reg_nr) |
cc17453a EZ |
1439 | { |
1440 | return 4; | |
1441 | } | |
1442 | ||
1443 | /* Return the GDB type object for the "standard" data type | |
1444 | of data in register N. */ | |
1445 | ||
1446 | static struct type * | |
fba45db2 | 1447 | sh_sh3e_register_virtual_type (int reg_nr) |
cc17453a EZ |
1448 | { |
1449 | if ((reg_nr >= FP0_REGNUM | |
1450 | && (reg_nr <= gdbarch_tdep (current_gdbarch)->FP15_REGNUM)) | |
1451 | || (reg_nr == gdbarch_tdep (current_gdbarch)->FPUL_REGNUM)) | |
1452 | return builtin_type_float; | |
8db62801 | 1453 | else |
cc17453a EZ |
1454 | return builtin_type_int; |
1455 | } | |
1456 | ||
53116e27 | 1457 | static struct type * |
fba45db2 | 1458 | sh_sh4_register_virtual_type (int reg_nr) |
53116e27 EZ |
1459 | { |
1460 | if ((reg_nr >= FP0_REGNUM | |
1461 | && (reg_nr <= gdbarch_tdep (current_gdbarch)->FP15_REGNUM)) | |
1462 | || (reg_nr == gdbarch_tdep (current_gdbarch)->FPUL_REGNUM)) | |
1463 | return builtin_type_float; | |
1464 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
fe9f384f | 1465 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) |
53116e27 EZ |
1466 | return builtin_type_double; |
1467 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
fe9f384f | 1468 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1469 | return sh_sh4_build_float_register_type (3); |
1470 | else | |
1471 | return builtin_type_int; | |
1472 | } | |
1473 | ||
1474 | static struct type * | |
1475 | sh_sh4_build_float_register_type (int high) | |
1476 | { | |
1477 | struct type *temp; | |
1478 | ||
1479 | temp = create_range_type (NULL, builtin_type_int, 0, high); | |
1480 | return create_array_type (NULL, builtin_type_float, temp); | |
1481 | } | |
1482 | ||
cc17453a | 1483 | static struct type * |
fba45db2 | 1484 | sh_default_register_virtual_type (int reg_nr) |
cc17453a EZ |
1485 | { |
1486 | return builtin_type_int; | |
1487 | } | |
1488 | ||
fb409745 EZ |
1489 | /* On the sh4, the DRi pseudo registers are problematic if the target |
1490 | is little endian. When the user writes one of those registers, for | |
1491 | instance with 'ser var $dr0=1', we want the double to be stored | |
1492 | like this: | |
1493 | fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f | |
1494 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1495 | ||
1496 | This corresponds to little endian byte order & big endian word | |
1497 | order. However if we let gdb write the register w/o conversion, it | |
1498 | will write fr0 and fr1 this way: | |
1499 | fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1500 | fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f | |
1501 | because it will consider fr0 and fr1 as a single LE stretch of memory. | |
1502 | ||
1503 | To achieve what we want we must force gdb to store things in | |
1504 | floatformat_ieee_double_littlebyte_bigword (which is defined in | |
1505 | include/floatformat.h and libiberty/floatformat.c. | |
1506 | ||
1507 | In case the target is big endian, there is no problem, the | |
1508 | raw bytes will look like: | |
1509 | fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 | |
1510 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1511 | ||
1512 | The other pseudo registers (the FVs) also don't pose a problem | |
1513 | because they are stored as 4 individual FP elements. */ | |
1514 | ||
1515 | int | |
1516 | sh_sh4_register_convertible (int nr) | |
1517 | { | |
1518 | if (TARGET_BYTE_ORDER == LITTLE_ENDIAN) | |
1519 | return (gdbarch_tdep (current_gdbarch)->DR0_REGNUM <= nr | |
1520 | && nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM); | |
1521 | else | |
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | void | |
1526 | sh_sh4_register_convert_to_virtual (int regnum, struct type *type, | |
1527 | char *from, char *to) | |
1528 | { | |
1529 | if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
1530 | && regnum <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) | |
1531 | { | |
1532 | DOUBLEST val; | |
1533 | floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); | |
1534 | store_floating(to, TYPE_LENGTH(type), val); | |
1535 | } | |
1536 | else | |
1537 | error("sh_register_convert_to_virtual called with non DR register number"); | |
1538 | } | |
1539 | ||
1540 | void | |
1541 | sh_sh4_register_convert_to_raw (struct type *type, int regnum, | |
1542 | char *from, char *to) | |
1543 | { | |
1544 | if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
1545 | && regnum <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) | |
1546 | { | |
1547 | DOUBLEST val = extract_floating (from, TYPE_LENGTH(type)); | |
1548 | floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to); | |
1549 | } | |
1550 | else | |
1551 | error("sh_register_convert_to_raw called with non DR register number"); | |
1552 | } | |
1553 | ||
53116e27 EZ |
1554 | void |
1555 | sh_fetch_pseudo_register (int reg_nr) | |
1556 | { | |
1557 | int base_regnum, portion; | |
1558 | ||
1559 | if (!register_cached (reg_nr)) | |
1560 | { | |
1561 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
fe9f384f | 1562 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) |
53116e27 EZ |
1563 | { |
1564 | base_regnum = dr_reg_base_num (reg_nr); | |
1565 | ||
1566 | /* Read the real regs for which this one is an alias. */ | |
1567 | for (portion = 0; portion < 2; portion++) | |
1568 | if (!register_cached (base_regnum + portion)) | |
1569 | target_fetch_registers (base_regnum + portion); | |
1570 | } | |
1571 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
fe9f384f | 1572 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1573 | { |
1574 | base_regnum = fv_reg_base_num (reg_nr); | |
1575 | ||
1576 | /* Read the real regs for which this one is an alias. */ | |
1577 | for (portion = 0; portion < 4; portion++) | |
1578 | if (!register_cached (base_regnum + portion)) | |
1579 | target_fetch_registers (base_regnum + portion); | |
1580 | ||
1581 | } | |
1582 | register_valid [reg_nr] = 1; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | void | |
1587 | sh_store_pseudo_register (int reg_nr) | |
1588 | { | |
1589 | int base_regnum, portion; | |
1590 | ||
1591 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
fe9f384f | 1592 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR14_REGNUM) |
53116e27 EZ |
1593 | { |
1594 | base_regnum = dr_reg_base_num (reg_nr); | |
1595 | ||
1596 | /* Write the real regs for which this one is an alias. */ | |
1597 | for (portion = 0; portion < 2; portion++) | |
1598 | { | |
1599 | register_valid[base_regnum + portion] = 1; | |
1600 | target_store_registers (base_regnum + portion); | |
1601 | } | |
1602 | } | |
1603 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
fe9f384f | 1604 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1605 | { |
1606 | base_regnum = fv_reg_base_num (reg_nr); | |
1607 | ||
1608 | /* Write the real regs for which this one is an alias. */ | |
1609 | for (portion = 0; portion < 4; portion++) | |
1610 | { | |
1611 | register_valid[base_regnum + portion] = 1; | |
1612 | target_store_registers (base_regnum + portion); | |
1613 | } | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | static int | |
1618 | fv_reg_base_num (int fv_regnum) | |
1619 | { | |
1620 | int fp_regnum; | |
1621 | ||
1622 | fp_regnum = FP0_REGNUM + | |
1623 | (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4; | |
1624 | return fp_regnum; | |
1625 | } | |
1626 | ||
1627 | static int | |
1628 | dr_reg_base_num (int dr_regnum) | |
1629 | { | |
1630 | int fp_regnum; | |
1631 | ||
1632 | fp_regnum = FP0_REGNUM + | |
1633 | (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2; | |
1634 | return fp_regnum; | |
1635 | } | |
1636 | ||
1637 | static void | |
1638 | do_fv_register_info (int fv_regnum) | |
1639 | { | |
1640 | int first_fp_reg_num = fv_reg_base_num (fv_regnum); | |
1641 | printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", | |
1642 | fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM, | |
1643 | (int) read_register (first_fp_reg_num), | |
1644 | (int) read_register (first_fp_reg_num + 1), | |
1645 | (int) read_register (first_fp_reg_num + 2), | |
1646 | (int) read_register (first_fp_reg_num + 3)); | |
1647 | } | |
1648 | ||
1649 | static void | |
1650 | do_dr_register_info (int dr_regnum) | |
1651 | { | |
1652 | int first_fp_reg_num = dr_reg_base_num (dr_regnum); | |
1653 | ||
1654 | printf_filtered ("dr%d\t0x%08x%08x\n", | |
1655 | dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM, | |
1656 | (int) read_register (first_fp_reg_num), | |
1657 | (int) read_register (first_fp_reg_num + 1)); | |
1658 | } | |
1659 | ||
1660 | static void | |
1661 | sh_do_pseudo_register (int regnum) | |
1662 | { | |
1663 | if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS) | |
1664 | internal_error ("Invalid pasudo register number %d\n", regnum); | |
1665 | else if (regnum >= NUM_REGS && | |
1666 | regnum < gdbarch_tdep (current_gdbarch)->FV0_REGNUM) | |
1667 | do_dr_register_info (regnum); | |
1668 | else if (regnum >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM && | |
fe9f384f | 1669 | regnum <= gdbarch_tdep (current_gdbarch)->FV12_REGNUM) |
53116e27 EZ |
1670 | do_fv_register_info (regnum); |
1671 | } | |
1672 | ||
1673 | ||
1674 | static void | |
1675 | sh_do_fp_register (int regnum) | |
1676 | { /* do values for FP (float) regs */ | |
1677 | char *raw_buffer; | |
1678 | double flt; /* double extracted from raw hex data */ | |
1679 | int inv; | |
1680 | int j; | |
1681 | ||
1682 | /* Allocate space for the float. */ | |
1683 | raw_buffer = (char *) alloca (REGISTER_RAW_SIZE (FP0_REGNUM)); | |
1684 | ||
1685 | /* Get the data in raw format. */ | |
1686 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) | |
1687 | error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum)); | |
1688 | ||
1689 | /* Get the register as a number */ | |
1690 | flt = unpack_double (builtin_type_float, raw_buffer, &inv); | |
1691 | ||
1692 | /* Print the name and some spaces. */ | |
1693 | fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); | |
1694 | print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); | |
1695 | ||
1696 | /* Print the value. */ | |
1697 | printf_filtered (inv ? "<invalid float>" : "%-10.9g", flt); | |
1698 | ||
1699 | /* Print the fp register as hex. */ | |
1700 | printf_filtered ("\t(raw 0x"); | |
1701 | for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++) | |
1702 | { | |
1703 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
1704 | : REGISTER_RAW_SIZE (regnum) - 1 - j; | |
1705 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
1706 | } | |
1707 | printf_filtered (")"); | |
1708 | printf_filtered ("\n"); | |
1709 | } | |
1710 | ||
1711 | static void | |
1712 | sh_do_register (int regnum) | |
1713 | { | |
1714 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1715 | ||
1716 | fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); | |
1717 | print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); | |
1718 | ||
1719 | /* Get the data in raw format. */ | |
1720 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) | |
1721 | printf_filtered ("*value not available*\n"); | |
1722 | ||
1723 | val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, | |
1724 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1725 | printf_filtered ("\t"); | |
1726 | val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, | |
1727 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1728 | printf_filtered ("\n"); | |
1729 | } | |
1730 | ||
1731 | static void | |
1732 | sh_print_register (int regnum) | |
1733 | { | |
1734 | if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS) | |
1735 | internal_error ("Invalid register number %d\n", regnum); | |
1736 | ||
1737 | else if (regnum > 0 && regnum < NUM_REGS) | |
1738 | { | |
1739 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) | |
1740 | sh_do_fp_register (regnum); /* FP regs */ | |
1741 | else | |
1742 | sh_do_register (regnum); /* All other regs */ | |
1743 | } | |
1744 | ||
1745 | else if (regnum < NUM_REGS + NUM_PSEUDO_REGS) | |
1746 | sh_do_pseudo_register (regnum); | |
1747 | } | |
1748 | ||
1749 | void | |
1750 | sh_do_registers_info (int regnum, int fpregs) | |
1751 | { | |
1752 | if (regnum != -1) /* do one specified register */ | |
1753 | { | |
1754 | if (*(REGISTER_NAME (regnum)) == '\0') | |
1755 | error ("Not a valid register for the current processor type"); | |
1756 | ||
1757 | sh_print_register (regnum); | |
1758 | } | |
1759 | else | |
1760 | /* do all (or most) registers */ | |
1761 | { | |
1762 | regnum = 0; | |
1763 | while (regnum < NUM_REGS) | |
1764 | { | |
1765 | /* If the register name is empty, it is undefined for this | |
1766 | processor, so don't display anything. */ | |
1767 | if (REGISTER_NAME (regnum) == NULL | |
1768 | || *(REGISTER_NAME (regnum)) == '\0') | |
1769 | { | |
1770 | regnum++; | |
1771 | continue; | |
1772 | } | |
1773 | ||
1774 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) | |
1775 | { | |
1776 | if (fpregs) | |
1777 | { | |
1778 | /* true for "INFO ALL-REGISTERS" command */ | |
1779 | sh_do_fp_register (regnum); /* FP regs */ | |
1780 | regnum ++; | |
1781 | } | |
1782 | else | |
1783 | regnum += (gdbarch_tdep (current_gdbarch)->FP15_REGNUM - FP0_REGNUM); /* skip FP regs */ | |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | sh_do_register (regnum); /* All other regs */ | |
1788 | regnum++; | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | if (fpregs) | |
1793 | while (regnum < NUM_REGS + NUM_PSEUDO_REGS) | |
1794 | { | |
1795 | sh_do_pseudo_register (regnum); | |
1796 | regnum++; | |
1797 | } | |
1798 | } | |
1799 | } | |
1800 | ||
cc17453a EZ |
1801 | static gdbarch_init_ftype sh_gdbarch_init; |
1802 | ||
1803 | static struct gdbarch * | |
fba45db2 | 1804 | sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
cc17453a EZ |
1805 | { |
1806 | static LONGEST sh_call_dummy_words[] = {0}; | |
1807 | struct gdbarch *gdbarch; | |
1808 | struct gdbarch_tdep *tdep; | |
1809 | gdbarch_register_name_ftype *sh_register_name; | |
1810 | gdbarch_store_return_value_ftype *sh_store_return_value; | |
1811 | gdbarch_register_virtual_type_ftype *sh_register_virtual_type; | |
1812 | ||
1813 | /* Find a candidate among the list of pre-declared architectures. */ | |
1814 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1815 | if (arches != NULL) | |
1816 | return arches->gdbarch; | |
1817 | ||
1818 | /* None found, create a new architecture from the information | |
1819 | provided. */ | |
1820 | tdep = XMALLOC (struct gdbarch_tdep); | |
1821 | gdbarch = gdbarch_alloc (&info, tdep); | |
1822 | ||
1823 | /* Initialize the register numbers that are not common to all the | |
1824 | variants to -1, if necessary thse will be overwritten in the case | |
1825 | statement below. */ | |
1826 | tdep->FPUL_REGNUM = -1; | |
1827 | tdep->FPSCR_REGNUM = -1; | |
1828 | tdep->DSR_REGNUM = -1; | |
1829 | tdep->FP15_REGNUM = -1; | |
1830 | tdep->A0G_REGNUM = -1; | |
1831 | tdep->A0_REGNUM = -1; | |
1832 | tdep->A1G_REGNUM = -1; | |
1833 | tdep->A1_REGNUM = -1; | |
1834 | tdep->M0_REGNUM = -1; | |
1835 | tdep->M1_REGNUM = -1; | |
1836 | tdep->X0_REGNUM = -1; | |
1837 | tdep->X1_REGNUM = -1; | |
1838 | tdep->Y0_REGNUM = -1; | |
1839 | tdep->Y1_REGNUM = -1; | |
1840 | tdep->MOD_REGNUM = -1; | |
1841 | tdep->RS_REGNUM = -1; | |
1842 | tdep->RE_REGNUM = -1; | |
1843 | tdep->SSR_REGNUM = -1; | |
1844 | tdep->SPC_REGNUM = -1; | |
53116e27 | 1845 | tdep->DR0_REGNUM = -1; |
53116e27 | 1846 | tdep->DR2_REGNUM = -1; |
53116e27 | 1847 | tdep->DR4_REGNUM = -1; |
53116e27 | 1848 | tdep->DR6_REGNUM = -1; |
fe9f384f EZ |
1849 | tdep->DR8_REGNUM = -1; |
1850 | tdep->DR10_REGNUM = -1; | |
1851 | tdep->DR12_REGNUM = -1; | |
1852 | tdep->DR14_REGNUM = -1; | |
53116e27 | 1853 | tdep->FV0_REGNUM = -1; |
fe9f384f EZ |
1854 | tdep->FV4_REGNUM = -1; |
1855 | tdep->FV8_REGNUM = -1; | |
1856 | tdep->FV12_REGNUM = -1; | |
cc17453a | 1857 | set_gdbarch_fp0_regnum (gdbarch, -1); |
53116e27 EZ |
1858 | set_gdbarch_num_pseudo_regs (gdbarch, 0); |
1859 | set_gdbarch_max_register_raw_size (gdbarch, 4); | |
1860 | set_gdbarch_max_register_virtual_size (gdbarch, 4); | |
cc17453a EZ |
1861 | |
1862 | switch (info.bfd_arch_info->mach) | |
8db62801 | 1863 | { |
cc17453a EZ |
1864 | case bfd_mach_sh: |
1865 | sh_register_name = sh_sh_register_name; | |
1866 | sh_show_regs = sh_generic_show_regs; | |
1867 | sh_store_return_value = sh_default_store_return_value; | |
1868 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1869 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1870 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1871 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1872 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1873 | break; |
1874 | case bfd_mach_sh2: | |
1875 | sh_register_name = sh_sh_register_name; | |
1876 | sh_show_regs = sh_generic_show_regs; | |
1877 | sh_store_return_value = sh_default_store_return_value; | |
1878 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1879 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1880 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1881 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1882 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1883 | break; |
1884 | case bfd_mach_sh_dsp: | |
1885 | sh_register_name = sh_sh_dsp_register_name; | |
1886 | sh_show_regs = sh_dsp_show_regs; | |
1887 | sh_store_return_value = sh_default_store_return_value; | |
1888 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1889 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1890 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1891 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1892 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1893 | tdep->DSR_REGNUM = 24; |
1894 | tdep->A0G_REGNUM = 25; | |
1895 | tdep->A0_REGNUM = 26; | |
1896 | tdep->A1G_REGNUM = 27; | |
1897 | tdep->A1_REGNUM = 28; | |
1898 | tdep->M0_REGNUM = 29; | |
1899 | tdep->M1_REGNUM = 30; | |
1900 | tdep->X0_REGNUM = 31; | |
1901 | tdep->X1_REGNUM = 32; | |
1902 | tdep->Y0_REGNUM = 33; | |
1903 | tdep->Y1_REGNUM = 34; | |
1904 | tdep->MOD_REGNUM = 40; | |
1905 | tdep->RS_REGNUM = 43; | |
1906 | tdep->RE_REGNUM = 44; | |
1907 | break; | |
1908 | case bfd_mach_sh3: | |
1909 | sh_register_name = sh_sh3_register_name; | |
1910 | sh_show_regs = sh3_show_regs; | |
1911 | sh_store_return_value = sh_default_store_return_value; | |
1912 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1913 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1914 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1915 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1916 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1917 | tdep->SSR_REGNUM = 41; |
1918 | tdep->SPC_REGNUM = 42; | |
1919 | break; | |
1920 | case bfd_mach_sh3e: | |
1921 | sh_register_name = sh_sh3e_register_name; | |
1922 | sh_show_regs = sh3e_show_regs; | |
1923 | sh_store_return_value = sh3e_sh4_store_return_value; | |
1924 | sh_register_virtual_type = sh_sh3e_register_virtual_type; | |
1925 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); | |
53116e27 EZ |
1926 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1927 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1928 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1929 | set_gdbarch_fp0_regnum (gdbarch, 25); |
1930 | tdep->FPUL_REGNUM = 23; | |
1931 | tdep->FPSCR_REGNUM = 24; | |
1932 | tdep->FP15_REGNUM = 40; | |
1933 | tdep->SSR_REGNUM = 41; | |
1934 | tdep->SPC_REGNUM = 42; | |
1935 | break; | |
1936 | case bfd_mach_sh3_dsp: | |
1937 | sh_register_name = sh_sh3_dsp_register_name; | |
1938 | sh_show_regs = sh3_dsp_show_regs; | |
1939 | sh_store_return_value = sh_default_store_return_value; | |
1940 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1941 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1942 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1943 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1944 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1945 | tdep->DSR_REGNUM = 24; |
1946 | tdep->A0G_REGNUM = 25; | |
1947 | tdep->A0_REGNUM = 26; | |
1948 | tdep->A1G_REGNUM = 27; | |
1949 | tdep->A1_REGNUM = 28; | |
1950 | tdep->M0_REGNUM = 29; | |
1951 | tdep->M1_REGNUM = 30; | |
1952 | tdep->X0_REGNUM = 31; | |
1953 | tdep->X1_REGNUM = 32; | |
1954 | tdep->Y0_REGNUM = 33; | |
1955 | tdep->Y1_REGNUM = 34; | |
1956 | tdep->MOD_REGNUM = 40; | |
1957 | tdep->RS_REGNUM = 43; | |
1958 | tdep->RE_REGNUM = 44; | |
1959 | tdep->SSR_REGNUM = 41; | |
1960 | tdep->SPC_REGNUM = 42; | |
1961 | break; | |
1962 | case bfd_mach_sh4: | |
53116e27 EZ |
1963 | sh_register_name = sh_sh4_register_name; |
1964 | sh_show_regs = sh4_show_regs; | |
cc17453a | 1965 | sh_store_return_value = sh3e_sh4_store_return_value; |
53116e27 | 1966 | sh_register_virtual_type = sh_sh4_register_virtual_type; |
cc17453a EZ |
1967 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); |
1968 | set_gdbarch_fp0_regnum (gdbarch, 25); | |
53116e27 EZ |
1969 | set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size); |
1970 | set_gdbarch_register_virtual_size (gdbarch, sh_sh4_register_raw_size); | |
1971 | set_gdbarch_register_byte (gdbarch, sh_sh4_register_byte); | |
1972 | set_gdbarch_num_pseudo_regs (gdbarch, 12); | |
1973 | set_gdbarch_max_register_raw_size (gdbarch, 4 * 4); | |
1974 | set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4); | |
fb409745 EZ |
1975 | set_gdbarch_register_convert_to_raw (gdbarch, sh_sh4_register_convert_to_raw); |
1976 | set_gdbarch_register_convert_to_virtual (gdbarch, sh_sh4_register_convert_to_virtual); | |
1977 | set_gdbarch_register_convertible (gdbarch, sh_sh4_register_convertible); | |
cc17453a EZ |
1978 | tdep->FPUL_REGNUM = 23; |
1979 | tdep->FPSCR_REGNUM = 24; | |
1980 | tdep->FP15_REGNUM = 40; | |
1981 | tdep->SSR_REGNUM = 41; | |
1982 | tdep->SPC_REGNUM = 42; | |
53116e27 | 1983 | tdep->DR0_REGNUM = 59; |
fe9f384f EZ |
1984 | tdep->DR2_REGNUM = 60; |
1985 | tdep->DR4_REGNUM = 61; | |
1986 | tdep->DR6_REGNUM = 62; | |
1987 | tdep->DR8_REGNUM = 63; | |
1988 | tdep->DR10_REGNUM = 64; | |
1989 | tdep->DR12_REGNUM = 65; | |
1990 | tdep->DR14_REGNUM = 66; | |
53116e27 | 1991 | tdep->FV0_REGNUM = 67; |
fe9f384f EZ |
1992 | tdep->FV4_REGNUM = 68; |
1993 | tdep->FV8_REGNUM = 69; | |
1994 | tdep->FV12_REGNUM = 70; | |
cc17453a EZ |
1995 | break; |
1996 | default: | |
1997 | sh_register_name = sh_generic_register_name; | |
1998 | sh_show_regs = sh_generic_show_regs; | |
1999 | sh_store_return_value = sh_default_store_return_value; | |
2000 | sh_register_virtual_type = sh_default_register_virtual_type; | |
2001 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
2002 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
2003 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
2004 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a | 2005 | break; |
8db62801 | 2006 | } |
cc17453a EZ |
2007 | |
2008 | set_gdbarch_read_pc (gdbarch, generic_target_read_pc); | |
2009 | set_gdbarch_write_pc (gdbarch, generic_target_write_pc); | |
2010 | set_gdbarch_read_fp (gdbarch, generic_target_read_fp); | |
2011 | set_gdbarch_write_fp (gdbarch, generic_target_write_fp); | |
2012 | set_gdbarch_read_sp (gdbarch, generic_target_read_sp); | |
2013 | set_gdbarch_write_sp (gdbarch, generic_target_write_sp); | |
2014 | ||
2015 | set_gdbarch_num_regs (gdbarch, 59); | |
2016 | set_gdbarch_sp_regnum (gdbarch, 15); | |
2017 | set_gdbarch_fp_regnum (gdbarch, 14); | |
2018 | set_gdbarch_pc_regnum (gdbarch, 16); | |
2019 | set_gdbarch_register_name (gdbarch, sh_register_name); | |
2020 | set_gdbarch_register_size (gdbarch, 4); | |
2021 | set_gdbarch_register_bytes (gdbarch, NUM_REGS * 4); | |
cc17453a EZ |
2022 | set_gdbarch_register_virtual_type (gdbarch, sh_register_virtual_type); |
2023 | ||
2024 | set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2025 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); | |
2026 | set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2027 | set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2028 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
2029 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2030 | set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
2031 | set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT); | |
2032 | ||
2033 | set_gdbarch_use_generic_dummy_frames (gdbarch, 1); | |
2034 | set_gdbarch_call_dummy_length (gdbarch, 0); | |
2035 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); | |
2036 | set_gdbarch_call_dummy_address (gdbarch, entry_point_address); | |
2037 | set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); /*???*/ | |
2038 | set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); | |
2039 | set_gdbarch_call_dummy_start_offset (gdbarch, 0); | |
2040 | set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy); | |
2041 | set_gdbarch_call_dummy_words (gdbarch, sh_call_dummy_words); | |
2042 | set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words)); | |
2043 | set_gdbarch_call_dummy_p (gdbarch, 1); | |
2044 | set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); | |
2045 | set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); | |
2046 | set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); | |
2047 | set_gdbarch_coerce_float_to_double (gdbarch, | |
2048 | sh_coerce_float_to_double); | |
2049 | ||
2050 | set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value); | |
2051 | set_gdbarch_push_arguments (gdbarch, sh_push_arguments); | |
2052 | set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); | |
2053 | set_gdbarch_push_return_address (gdbarch, sh_push_return_address); | |
2054 | ||
2055 | set_gdbarch_store_struct_return (gdbarch, sh_store_struct_return); | |
2056 | set_gdbarch_store_return_value (gdbarch, sh_store_return_value); | |
2057 | set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address); | |
2058 | set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention); | |
2059 | set_gdbarch_init_extra_frame_info (gdbarch, sh_init_extra_frame_info); | |
2060 | set_gdbarch_pop_frame (gdbarch, sh_pop_frame); | |
2061 | set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue); | |
2062 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
2063 | set_gdbarch_decr_pc_after_break (gdbarch, 0); | |
2064 | set_gdbarch_function_start_offset (gdbarch, 0); | |
2065 | set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); | |
2066 | ||
53116e27 EZ |
2067 | set_gdbarch_fetch_pseudo_register (gdbarch, sh_fetch_pseudo_register); |
2068 | set_gdbarch_store_pseudo_register (gdbarch, sh_store_pseudo_register); | |
cc17453a EZ |
2069 | set_gdbarch_frame_args_skip (gdbarch, 0); |
2070 | set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); | |
2071 | set_gdbarch_frame_chain (gdbarch, sh_frame_chain); | |
2072 | set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); | |
2073 | set_gdbarch_frame_saved_pc (gdbarch, sh_frame_saved_pc); | |
2074 | set_gdbarch_frame_args_address (gdbarch, sh_frame_args_address); | |
2075 | set_gdbarch_frame_locals_address (gdbarch, sh_frame_locals_address); | |
2076 | set_gdbarch_saved_pc_after_call (gdbarch, sh_saved_pc_after_call); | |
2077 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); | |
2078 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); | |
2079 | set_gdbarch_ieee_float (gdbarch, 1); | |
2080 | ||
2081 | return gdbarch; | |
8db62801 EZ |
2082 | } |
2083 | ||
c906108c | 2084 | void |
fba45db2 | 2085 | _initialize_sh_tdep (void) |
c906108c SS |
2086 | { |
2087 | struct cmd_list_element *c; | |
cc17453a EZ |
2088 | |
2089 | register_gdbarch_init (bfd_arch_sh, sh_gdbarch_init); | |
c906108c SS |
2090 | tm_print_insn = gdb_print_insn_sh; |
2091 | ||
53116e27 | 2092 | add_com ("regs", class_vars, sh_show_regs_command, "Print all registers"); |
c906108c | 2093 | } |