Commit | Line | Data |
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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 | |
1a8629c7 MS |
42 | #include "solib-svr4.h" |
43 | ||
cc17453a EZ |
44 | #undef XMALLOC |
45 | #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE))) | |
46 | ||
53116e27 EZ |
47 | |
48 | /* Frame interpretation related functions. */ | |
cc17453a EZ |
49 | static gdbarch_breakpoint_from_pc_ftype sh_breakpoint_from_pc; |
50 | static gdbarch_frame_chain_ftype sh_frame_chain; | |
51 | static gdbarch_frame_saved_pc_ftype sh_frame_saved_pc; | |
52 | static gdbarch_skip_prologue_ftype sh_skip_prologue; | |
53116e27 | 53 | |
cc17453a EZ |
54 | static gdbarch_frame_init_saved_regs_ftype sh_nofp_frame_init_saved_regs; |
55 | static gdbarch_frame_init_saved_regs_ftype sh_fp_frame_init_saved_regs; | |
53116e27 EZ |
56 | static gdbarch_init_extra_frame_info_ftype sh_init_extra_frame_info; |
57 | static gdbarch_pop_frame_ftype sh_pop_frame; | |
58 | static gdbarch_saved_pc_after_call_ftype sh_saved_pc_after_call; | |
53116e27 EZ |
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); | |
c5f7d19c | 105 | static gdbarch_do_registers_info_ftype sh_do_registers_info; |
53116e27 EZ |
106 | static void do_fv_register_info (int fv_regnum); |
107 | static void do_dr_register_info (int dr_regnum); | |
108 | static void sh_do_pseudo_register (int regnum); | |
109 | static void sh_do_fp_register (int regnum); | |
110 | static void sh_do_register (int regnum); | |
111 | static void sh_print_register (int regnum); | |
112 | ||
113 | void (*sh_show_regs) (void); | |
e6c42fda | 114 | int (*print_sh_insn) (bfd_vma, disassemble_info*); |
cc17453a | 115 | |
cc17453a EZ |
116 | /* Define other aspects of the stack frame. |
117 | we keep a copy of the worked out return pc lying around, since it | |
118 | is a useful bit of info */ | |
119 | ||
120 | struct frame_extra_info | |
121 | { | |
122 | CORE_ADDR return_pc; | |
123 | int leaf_function; | |
124 | int f_offset; | |
63978407 | 125 | }; |
c906108c | 126 | |
cc17453a | 127 | #if 0 |
091be84d CF |
128 | #ifdef _WIN32_WCE |
129 | char **sh_register_names = sh3_reg_names; | |
130 | #else | |
c906108c | 131 | char **sh_register_names = sh_generic_reg_names; |
091be84d | 132 | #endif |
cc17453a | 133 | #endif |
c906108c | 134 | |
cc17453a EZ |
135 | static char * |
136 | sh_generic_register_name (int reg_nr) | |
c5aa993b | 137 | { |
cc17453a | 138 | static char *register_names[] = |
c5aa993b | 139 | { |
cc17453a EZ |
140 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
141 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
142 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
143 | "fpul", "fpscr", | |
144 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", | |
145 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
146 | "ssr", "spc", | |
147 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
148 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", | |
149 | }; | |
150 | if (reg_nr < 0) | |
151 | return NULL; | |
152 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
153 | return NULL; | |
154 | return register_names[reg_nr]; | |
155 | } | |
156 | ||
157 | static char * | |
158 | sh_sh_register_name (int reg_nr) | |
159 | { | |
160 | static char *register_names[] = | |
63978407 | 161 | { |
cc17453a EZ |
162 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
163 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
164 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
165 | "", "", | |
166 | "", "", "", "", "", "", "", "", | |
167 | "", "", "", "", "", "", "", "", | |
168 | "", "", | |
169 | "", "", "", "", "", "", "", "", | |
170 | "", "", "", "", "", "", "", "", | |
171 | }; | |
172 | if (reg_nr < 0) | |
173 | return NULL; | |
174 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
175 | return NULL; | |
176 | return register_names[reg_nr]; | |
177 | } | |
178 | ||
179 | static char * | |
180 | sh_sh3_register_name (int reg_nr) | |
181 | { | |
182 | static char *register_names[] = | |
c5aa993b | 183 | { |
cc17453a EZ |
184 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
185 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
186 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
187 | "", "", | |
188 | "", "", "", "", "", "", "", "", | |
189 | "", "", "", "", "", "", "", "", | |
190 | "ssr", "spc", | |
191 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
192 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1" | |
193 | }; | |
194 | if (reg_nr < 0) | |
195 | return NULL; | |
196 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
197 | return NULL; | |
198 | return register_names[reg_nr]; | |
199 | } | |
200 | ||
201 | static char * | |
202 | sh_sh3e_register_name (int reg_nr) | |
203 | { | |
204 | static char *register_names[] = | |
63978407 | 205 | { |
cc17453a EZ |
206 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
207 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
208 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
209 | "fpul", "fpscr", | |
210 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", | |
211 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
212 | "ssr", "spc", | |
213 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", | |
214 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", | |
215 | }; | |
216 | if (reg_nr < 0) | |
217 | return NULL; | |
218 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
219 | return NULL; | |
220 | return register_names[reg_nr]; | |
221 | } | |
222 | ||
223 | static char * | |
224 | sh_sh_dsp_register_name (int reg_nr) | |
225 | { | |
226 | static char *register_names[] = | |
c5aa993b | 227 | { |
cc17453a EZ |
228 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
229 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
230 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
231 | "", "dsr", | |
232 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", | |
233 | "y0", "y1", "", "", "", "", "", "mod", | |
234 | "", "", | |
235 | "rs", "re", "", "", "", "", "", "", | |
236 | "", "", "", "", "", "", "", "", | |
237 | }; | |
238 | if (reg_nr < 0) | |
239 | return NULL; | |
240 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
241 | return NULL; | |
242 | return register_names[reg_nr]; | |
243 | } | |
244 | ||
245 | static char * | |
246 | sh_sh3_dsp_register_name (int reg_nr) | |
247 | { | |
248 | static char *register_names[] = | |
c5aa993b | 249 | { |
cc17453a EZ |
250 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
251 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
252 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", | |
253 | "", "dsr", | |
254 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", | |
255 | "y0", "y1", "", "", "", "", "", "mod", | |
256 | "ssr", "spc", | |
257 | "rs", "re", "", "", "", "", "", "", | |
258 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b" | |
259 | "", "", "", "", "", "", "", "", | |
260 | }; | |
261 | if (reg_nr < 0) | |
262 | return NULL; | |
263 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
264 | return NULL; | |
265 | return register_names[reg_nr]; | |
266 | } | |
267 | ||
53116e27 EZ |
268 | static char * |
269 | sh_sh4_register_name (int reg_nr) | |
270 | { | |
271 | static char *register_names[] = | |
272 | { | |
a38d2a54 | 273 | /* general registers 0-15 */ |
53116e27 EZ |
274 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
275 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
a38d2a54 | 276 | /* 16 - 22 */ |
53116e27 | 277 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
a38d2a54 | 278 | /* 23, 24 */ |
53116e27 | 279 | "fpul", "fpscr", |
a38d2a54 | 280 | /* floating point registers 25 - 40 */ |
53116e27 EZ |
281 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
282 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", | |
a38d2a54 | 283 | /* 41, 42 */ |
53116e27 | 284 | "ssr", "spc", |
a38d2a54 | 285 | /* bank 0 43 - 50 */ |
53116e27 | 286 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", |
a38d2a54 | 287 | /* bank 1 51 - 58 */ |
53116e27 | 288 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", |
a38d2a54 | 289 | /* double precision (pseudo) 59 - 66 */ |
fe9f384f | 290 | "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", |
a38d2a54 | 291 | /* vectors (pseudo) 67 - 70 */ |
fe9f384f | 292 | "fv0", "fv4", "fv8", "fv12", |
a38d2a54 EZ |
293 | /* FIXME: missing XF 71 - 86 */ |
294 | /* FIXME: missing XD 87 - 94 */ | |
53116e27 EZ |
295 | }; |
296 | if (reg_nr < 0) | |
297 | return NULL; | |
298 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) | |
299 | return NULL; | |
300 | return register_names[reg_nr]; | |
301 | } | |
302 | ||
cc17453a | 303 | static unsigned char * |
fba45db2 | 304 | sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) |
cc17453a EZ |
305 | { |
306 | /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */ | |
307 | static unsigned char breakpoint[] = {0xc3, 0xc3}; | |
308 | ||
309 | *lenptr = sizeof (breakpoint); | |
310 | return breakpoint; | |
311 | } | |
c906108c SS |
312 | |
313 | /* Prologue looks like | |
c5aa993b JM |
314 | [mov.l <regs>,@-r15]... |
315 | [sts.l pr,@-r15] | |
316 | [mov.l r14,@-r15] | |
317 | [mov r15,r14] | |
8db62801 EZ |
318 | |
319 | Actually it can be more complicated than this. For instance, with | |
320 | newer gcc's: | |
321 | ||
322 | mov.l r14,@-r15 | |
323 | add #-12,r15 | |
324 | mov r15,r14 | |
325 | mov r4,r1 | |
326 | mov r5,r2 | |
327 | mov.l r6,@(4,r14) | |
328 | mov.l r7,@(8,r14) | |
329 | mov.b r1,@r14 | |
330 | mov r14,r1 | |
331 | mov r14,r1 | |
332 | add #2,r1 | |
333 | mov.w r2,@r1 | |
334 | ||
c5aa993b | 335 | */ |
c906108c | 336 | |
8db62801 EZ |
337 | /* STS.L PR,@-r15 0100111100100010 |
338 | r15-4-->r15, PR-->(r15) */ | |
c906108c | 339 | #define IS_STS(x) ((x) == 0x4f22) |
8db62801 EZ |
340 | |
341 | /* MOV.L Rm,@-r15 00101111mmmm0110 | |
342 | r15-4-->r15, Rm-->(R15) */ | |
c906108c | 343 | #define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) |
8db62801 | 344 | |
c906108c | 345 | #define GET_PUSHED_REG(x) (((x) >> 4) & 0xf) |
8db62801 EZ |
346 | |
347 | /* MOV r15,r14 0110111011110011 | |
348 | r15-->r14 */ | |
c906108c | 349 | #define IS_MOV_SP_FP(x) ((x) == 0x6ef3) |
8db62801 EZ |
350 | |
351 | /* ADD #imm,r15 01111111iiiiiiii | |
352 | r15+imm-->r15 */ | |
c906108c | 353 | #define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00) |
8db62801 | 354 | |
c906108c SS |
355 | #define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00) |
356 | #define IS_SHLL_R3(x) ((x) == 0x4300) | |
8db62801 EZ |
357 | |
358 | /* ADD r3,r15 0011111100111100 | |
359 | r15+r3-->r15 */ | |
c906108c | 360 | #define IS_ADD_R3SP(x) ((x) == 0x3f3c) |
8db62801 EZ |
361 | |
362 | /* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011 | |
8db62801 | 363 | FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011 |
8db62801 | 364 | FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */ |
c906108c | 365 | #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) |
c906108c | 366 | |
8db62801 | 367 | /* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 |
8db62801 | 368 | MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd |
8db62801 EZ |
369 | MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010 |
370 | where Rm is one of r4,r5,r6,r7 which are the argument registers. */ | |
371 | #define IS_ARG_MOV(x) \ | |
372 | (((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ | |
cc17453a EZ |
373 | || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ |
374 | || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))) | |
8db62801 EZ |
375 | |
376 | /* MOV.L Rm,@(disp,r14) 00011110mmmmdddd | |
377 | Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */ | |
378 | #define IS_MOV_R14(x) \ | |
cc17453a | 379 | ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) |
8db62801 EZ |
380 | |
381 | #define FPSCR_SZ (1 << 20) | |
c906108c | 382 | |
c906108c SS |
383 | /* Skip any prologue before the guts of a function */ |
384 | ||
8db62801 EZ |
385 | /* Skip the prologue using the debug information. If this fails we'll |
386 | fall back on the 'guess' method below. */ | |
387 | static CORE_ADDR | |
fba45db2 | 388 | after_prologue (CORE_ADDR pc) |
8db62801 EZ |
389 | { |
390 | struct symtab_and_line sal; | |
391 | CORE_ADDR func_addr, func_end; | |
392 | ||
393 | /* If we can not find the symbol in the partial symbol table, then | |
394 | there is no hope we can determine the function's start address | |
395 | with this code. */ | |
396 | if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
397 | return 0; | |
398 | ||
399 | /* Get the line associated with FUNC_ADDR. */ | |
400 | sal = find_pc_line (func_addr, 0); | |
401 | ||
402 | /* There are only two cases to consider. First, the end of the source line | |
403 | is within the function bounds. In that case we return the end of the | |
404 | source line. Second is the end of the source line extends beyond the | |
405 | bounds of the current function. We need to use the slow code to | |
406 | examine instructions in that case. */ | |
407 | if (sal.end < func_end) | |
408 | return sal.end; | |
409 | else | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /* Here we look at each instruction in the function, and try to guess | |
414 | where the prologue ends. Unfortunately this is not always | |
415 | accurate. */ | |
416 | static CORE_ADDR | |
fba45db2 | 417 | skip_prologue_hard_way (CORE_ADDR start_pc) |
c906108c | 418 | { |
2bfa91ee | 419 | CORE_ADDR here, end; |
8db62801 | 420 | int updated_fp = 0; |
2bfa91ee EZ |
421 | |
422 | if (!start_pc) | |
423 | return 0; | |
424 | ||
425 | for (here = start_pc, end = start_pc + (2 * 28); here < end;) | |
c906108c | 426 | { |
2bfa91ee EZ |
427 | int w = read_memory_integer (here, 2); |
428 | here += 2; | |
429 | if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w) | |
8db62801 EZ |
430 | || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w) |
431 | || IS_ARG_MOV (w) || IS_MOV_R14 (w)) | |
2bfa91ee EZ |
432 | { |
433 | start_pc = here; | |
2bfa91ee | 434 | } |
8db62801 EZ |
435 | else if (IS_MOV_SP_FP (w)) |
436 | { | |
437 | start_pc = here; | |
438 | updated_fp = 1; | |
439 | } | |
440 | else | |
441 | /* Don't bail out yet, if we are before the copy of sp. */ | |
442 | if (updated_fp) | |
443 | break; | |
c906108c SS |
444 | } |
445 | ||
446 | return start_pc; | |
447 | } | |
448 | ||
cc17453a | 449 | static CORE_ADDR |
fba45db2 | 450 | sh_skip_prologue (CORE_ADDR pc) |
8db62801 EZ |
451 | { |
452 | CORE_ADDR post_prologue_pc; | |
453 | ||
454 | /* See if we can determine the end of the prologue via the symbol table. | |
455 | If so, then return either PC, or the PC after the prologue, whichever | |
456 | is greater. */ | |
457 | ||
458 | post_prologue_pc = after_prologue (pc); | |
459 | ||
460 | /* If after_prologue returned a useful address, then use it. Else | |
461 | fall back on the instruction skipping code. */ | |
462 | if (post_prologue_pc != 0) | |
463 | return max (pc, post_prologue_pc); | |
464 | else | |
465 | return (skip_prologue_hard_way (pc)); | |
466 | } | |
467 | ||
cc17453a EZ |
468 | /* Immediately after a function call, return the saved pc. |
469 | Can't always go through the frames for this because on some machines | |
470 | the new frame is not set up until the new function executes | |
471 | some instructions. | |
472 | ||
473 | The return address is the value saved in the PR register + 4 */ | |
474 | static CORE_ADDR | |
fba45db2 | 475 | sh_saved_pc_after_call (struct frame_info *frame) |
cc17453a EZ |
476 | { |
477 | return (ADDR_BITS_REMOVE(read_register(PR_REGNUM))); | |
478 | } | |
479 | ||
480 | /* Should call_function allocate stack space for a struct return? */ | |
481 | static int | |
fba45db2 | 482 | sh_use_struct_convention (int gcc_p, struct type *type) |
cc17453a EZ |
483 | { |
484 | return (TYPE_LENGTH (type) > 1); | |
485 | } | |
486 | ||
487 | /* Store the address of the place in which to copy the structure the | |
488 | subroutine will return. This is called from call_function. | |
489 | ||
490 | We store structs through a pointer passed in R0 */ | |
491 | static void | |
fba45db2 | 492 | sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) |
cc17453a EZ |
493 | { |
494 | write_register (STRUCT_RETURN_REGNUM, (addr)); | |
495 | } | |
c906108c | 496 | |
cc17453a EZ |
497 | /* Disassemble an instruction. */ |
498 | static int | |
fba45db2 | 499 | gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info) |
c906108c SS |
500 | { |
501 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
502 | return print_insn_sh (memaddr, info); | |
503 | else | |
504 | return print_insn_shl (memaddr, info); | |
505 | } | |
506 | ||
507 | /* Given a GDB frame, determine the address of the calling function's frame. | |
508 | This will be used to create a new GDB frame struct, and then | |
509 | INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. | |
510 | ||
511 | For us, the frame address is its stack pointer value, so we look up | |
512 | the function prologue to determine the caller's sp value, and return it. */ | |
cc17453a | 513 | static CORE_ADDR |
fba45db2 | 514 | sh_frame_chain (struct frame_info *frame) |
c906108c SS |
515 | { |
516 | if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) | |
517 | return frame->frame; /* dummy frame same as caller's frame */ | |
2bfa91ee | 518 | if (frame->pc && !inside_entry_file (frame->pc)) |
cc17453a | 519 | return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, 4); |
c906108c SS |
520 | else |
521 | return 0; | |
522 | } | |
523 | ||
524 | /* Find REGNUM on the stack. Otherwise, it's in an active register. One thing | |
525 | we might want to do here is to check REGNUM against the clobber mask, and | |
526 | somehow flag it as invalid if it isn't saved on the stack somewhere. This | |
527 | would provide a graceful failure mode when trying to get the value of | |
528 | caller-saves registers for an inner frame. */ | |
529 | ||
cc17453a | 530 | static CORE_ADDR |
fba45db2 | 531 | sh_find_callers_reg (struct frame_info *fi, int regnum) |
c906108c | 532 | { |
c906108c SS |
533 | for (; fi; fi = fi->next) |
534 | if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) | |
535 | /* When the caller requests PR from the dummy frame, we return PC because | |
c5aa993b | 536 | that's where the previous routine appears to have done a call from. */ |
c906108c | 537 | return generic_read_register_dummy (fi->pc, fi->frame, regnum); |
c5aa993b | 538 | else |
c906108c | 539 | { |
cc17453a | 540 | FRAME_INIT_SAVED_REGS (fi); |
2bfa91ee EZ |
541 | if (!fi->pc) |
542 | return 0; | |
cc17453a EZ |
543 | if (fi->saved_regs[regnum] != 0) |
544 | return read_memory_integer (fi->saved_regs[regnum], | |
c5aa993b | 545 | REGISTER_RAW_SIZE (regnum)); |
c906108c SS |
546 | } |
547 | return read_register (regnum); | |
548 | } | |
549 | ||
550 | /* Put here the code to store, into a struct frame_saved_regs, the | |
551 | addresses of the saved registers of frame described by FRAME_INFO. | |
552 | This includes special registers such as pc and fp saved in special | |
553 | ways in the stack frame. sp is even more special: the address we | |
554 | return for it IS the sp for the next frame. */ | |
cc17453a | 555 | static void |
fba45db2 | 556 | sh_nofp_frame_init_saved_regs (struct frame_info *fi) |
c906108c SS |
557 | { |
558 | int where[NUM_REGS]; | |
559 | int rn; | |
560 | int have_fp = 0; | |
561 | int depth; | |
562 | int pc; | |
563 | int opc; | |
564 | int insn; | |
565 | int r3_val = 0; | |
c5aa993b | 566 | char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); |
cc17453a EZ |
567 | |
568 | if (fi->saved_regs == NULL) | |
569 | frame_saved_regs_zalloc (fi); | |
570 | else | |
571 | memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); | |
572 | ||
573 | if (dummy_regs) | |
574 | { | |
575 | /* DANGER! This is ONLY going to work if the char buffer format of | |
576 | the saved registers is byte-for-byte identical to the | |
577 | CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ | |
578 | memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); | |
579 | return; | |
580 | } | |
581 | ||
582 | fi->extra_info->leaf_function = 1; | |
583 | fi->extra_info->f_offset = 0; | |
584 | ||
585 | for (rn = 0; rn < NUM_REGS; rn++) | |
586 | where[rn] = -1; | |
587 | ||
588 | depth = 0; | |
589 | ||
590 | /* Loop around examining the prologue insns until we find something | |
591 | that does not appear to be part of the prologue. But give up | |
592 | after 20 of them, since we're getting silly then. */ | |
593 | ||
594 | pc = get_pc_function_start (fi->pc); | |
595 | if (!pc) | |
596 | { | |
597 | fi->pc = 0; | |
598 | return; | |
599 | } | |
600 | ||
601 | for (opc = pc + (2 * 28); pc < opc; pc += 2) | |
602 | { | |
603 | insn = read_memory_integer (pc, 2); | |
604 | /* See where the registers will be saved to */ | |
605 | if (IS_PUSH (insn)) | |
606 | { | |
607 | rn = GET_PUSHED_REG (insn); | |
608 | where[rn] = depth; | |
609 | depth += 4; | |
610 | } | |
611 | else if (IS_STS (insn)) | |
612 | { | |
613 | where[PR_REGNUM] = depth; | |
614 | /* If we're storing the pr then this isn't a leaf */ | |
615 | fi->extra_info->leaf_function = 0; | |
616 | depth += 4; | |
617 | } | |
618 | else if (IS_MOV_R3 (insn)) | |
619 | { | |
620 | r3_val = ((insn & 0xff) ^ 0x80) - 0x80; | |
621 | } | |
622 | else if (IS_SHLL_R3 (insn)) | |
623 | { | |
624 | r3_val <<= 1; | |
625 | } | |
626 | else if (IS_ADD_R3SP (insn)) | |
627 | { | |
628 | depth += -r3_val; | |
629 | } | |
630 | else if (IS_ADD_SP (insn)) | |
631 | { | |
632 | depth -= ((insn & 0xff) ^ 0x80) - 0x80; | |
633 | } | |
634 | else if (IS_MOV_SP_FP (insn)) | |
635 | break; | |
636 | #if 0 /* This used to just stop when it found an instruction that | |
637 | was not considered part of the prologue. Now, we just | |
638 | keep going looking for likely instructions. */ | |
639 | else | |
640 | break; | |
641 | #endif | |
642 | } | |
643 | ||
644 | /* Now we know how deep things are, we can work out their addresses */ | |
645 | ||
646 | for (rn = 0; rn < NUM_REGS; rn++) | |
647 | { | |
648 | if (where[rn] >= 0) | |
649 | { | |
650 | if (rn == FP_REGNUM) | |
651 | have_fp = 1; | |
c906108c | 652 | |
cc17453a EZ |
653 | fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; |
654 | } | |
655 | else | |
656 | { | |
657 | fi->saved_regs[rn] = 0; | |
658 | } | |
659 | } | |
660 | ||
661 | if (have_fp) | |
662 | { | |
663 | fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); | |
664 | } | |
665 | else | |
666 | { | |
667 | fi->saved_regs[SP_REGNUM] = fi->frame - 4; | |
668 | } | |
669 | ||
670 | fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; | |
671 | /* Work out the return pc - either from the saved pr or the pr | |
672 | value */ | |
673 | } | |
674 | ||
675 | static void | |
fba45db2 | 676 | sh_fp_frame_init_saved_regs (struct frame_info *fi) |
cc17453a EZ |
677 | { |
678 | int where[NUM_REGS]; | |
679 | int rn; | |
680 | int have_fp = 0; | |
681 | int depth; | |
682 | int pc; | |
683 | int opc; | |
684 | int insn; | |
685 | int r3_val = 0; | |
686 | char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); | |
687 | ||
688 | if (fi->saved_regs == NULL) | |
689 | frame_saved_regs_zalloc (fi); | |
690 | else | |
691 | memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS); | |
692 | ||
c906108c SS |
693 | if (dummy_regs) |
694 | { | |
695 | /* DANGER! This is ONLY going to work if the char buffer format of | |
c5aa993b JM |
696 | the saved registers is byte-for-byte identical to the |
697 | CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ | |
cc17453a | 698 | memcpy (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); |
c906108c SS |
699 | return; |
700 | } | |
701 | ||
cc17453a EZ |
702 | fi->extra_info->leaf_function = 1; |
703 | fi->extra_info->f_offset = 0; | |
c906108c SS |
704 | |
705 | for (rn = 0; rn < NUM_REGS; rn++) | |
706 | where[rn] = -1; | |
707 | ||
708 | depth = 0; | |
709 | ||
710 | /* Loop around examining the prologue insns until we find something | |
711 | that does not appear to be part of the prologue. But give up | |
712 | after 20 of them, since we're getting silly then. */ | |
713 | ||
2bfa91ee EZ |
714 | pc = get_pc_function_start (fi->pc); |
715 | if (!pc) | |
c906108c | 716 | { |
2bfa91ee EZ |
717 | fi->pc = 0; |
718 | return; | |
719 | } | |
720 | ||
721 | for (opc = pc + (2 * 28); pc < opc; pc += 2) | |
722 | { | |
723 | insn = read_memory_integer (pc, 2); | |
c906108c SS |
724 | /* See where the registers will be saved to */ |
725 | if (IS_PUSH (insn)) | |
726 | { | |
c906108c SS |
727 | rn = GET_PUSHED_REG (insn); |
728 | where[rn] = depth; | |
c906108c SS |
729 | depth += 4; |
730 | } | |
731 | else if (IS_STS (insn)) | |
732 | { | |
c906108c | 733 | where[PR_REGNUM] = depth; |
c906108c | 734 | /* If we're storing the pr then this isn't a leaf */ |
cc17453a | 735 | fi->extra_info->leaf_function = 0; |
c906108c SS |
736 | depth += 4; |
737 | } | |
738 | else if (IS_MOV_R3 (insn)) | |
739 | { | |
740 | r3_val = ((insn & 0xff) ^ 0x80) - 0x80; | |
c906108c SS |
741 | } |
742 | else if (IS_SHLL_R3 (insn)) | |
743 | { | |
744 | r3_val <<= 1; | |
c906108c SS |
745 | } |
746 | else if (IS_ADD_R3SP (insn)) | |
747 | { | |
748 | depth += -r3_val; | |
c906108c SS |
749 | } |
750 | else if (IS_ADD_SP (insn)) | |
751 | { | |
c906108c | 752 | depth -= ((insn & 0xff) ^ 0x80) - 0x80; |
c906108c SS |
753 | } |
754 | else if (IS_FMOV (insn)) | |
755 | { | |
cc17453a | 756 | if (read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM) & FPSCR_SZ) |
c906108c SS |
757 | { |
758 | depth += 8; | |
759 | } | |
760 | else | |
761 | { | |
762 | depth += 4; | |
763 | } | |
764 | } | |
2bfa91ee EZ |
765 | else if (IS_MOV_SP_FP (insn)) |
766 | break; | |
767 | #if 0 /* This used to just stop when it found an instruction that | |
768 | was not considered part of the prologue. Now, we just | |
769 | keep going looking for likely instructions. */ | |
c906108c SS |
770 | else |
771 | break; | |
2bfa91ee | 772 | #endif |
c906108c SS |
773 | } |
774 | ||
775 | /* Now we know how deep things are, we can work out their addresses */ | |
776 | ||
777 | for (rn = 0; rn < NUM_REGS; rn++) | |
778 | { | |
779 | if (where[rn] >= 0) | |
780 | { | |
781 | if (rn == FP_REGNUM) | |
782 | have_fp = 1; | |
783 | ||
cc17453a | 784 | fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; |
c906108c SS |
785 | } |
786 | else | |
787 | { | |
cc17453a | 788 | fi->saved_regs[rn] = 0; |
c906108c SS |
789 | } |
790 | } | |
791 | ||
792 | if (have_fp) | |
793 | { | |
cc17453a | 794 | fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); |
c906108c SS |
795 | } |
796 | else | |
797 | { | |
cc17453a | 798 | fi->saved_regs[SP_REGNUM] = fi->frame - 4; |
c906108c SS |
799 | } |
800 | ||
cc17453a | 801 | fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; |
c906108c SS |
802 | /* Work out the return pc - either from the saved pr or the pr |
803 | value */ | |
804 | } | |
805 | ||
cc17453a EZ |
806 | /* Initialize the extra info saved in a FRAME */ |
807 | static void | |
fba45db2 | 808 | sh_init_extra_frame_info (int fromleaf, struct frame_info *fi) |
c906108c | 809 | { |
cc17453a EZ |
810 | |
811 | fi->extra_info = (struct frame_extra_info *) | |
812 | frame_obstack_alloc (sizeof (struct frame_extra_info)); | |
c906108c SS |
813 | |
814 | if (fi->next) | |
815 | fi->pc = FRAME_SAVED_PC (fi->next); | |
816 | ||
817 | if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) | |
818 | { | |
819 | /* We need to setup fi->frame here because run_stack_dummy gets it wrong | |
c5aa993b JM |
820 | by assuming it's always FP. */ |
821 | fi->frame = generic_read_register_dummy (fi->pc, fi->frame, | |
822 | SP_REGNUM); | |
cc17453a EZ |
823 | fi->extra_info->return_pc = generic_read_register_dummy (fi->pc, fi->frame, |
824 | PC_REGNUM); | |
825 | fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4); | |
826 | fi->extra_info->leaf_function = 0; | |
c906108c SS |
827 | return; |
828 | } | |
829 | else | |
830 | { | |
cc17453a EZ |
831 | FRAME_INIT_SAVED_REGS (fi); |
832 | fi->extra_info->return_pc = sh_find_callers_reg (fi, PR_REGNUM); | |
c906108c SS |
833 | } |
834 | } | |
835 | ||
cc17453a EZ |
836 | /* Extract from an array REGBUF containing the (raw) register state |
837 | the address in which a function should return its structure value, | |
838 | as a CORE_ADDR (or an expression that can be used as one). */ | |
b3df3fff | 839 | static CORE_ADDR |
0c8053b6 | 840 | sh_extract_struct_value_address (char *regbuf) |
cc17453a EZ |
841 | { |
842 | return (extract_address ((regbuf), REGISTER_RAW_SIZE (0))); | |
843 | } | |
844 | ||
845 | static CORE_ADDR | |
fba45db2 | 846 | sh_frame_saved_pc (struct frame_info *frame) |
cc17453a EZ |
847 | { |
848 | return ((frame)->extra_info->return_pc); | |
849 | } | |
850 | ||
c906108c SS |
851 | /* Discard from the stack the innermost frame, |
852 | restoring all saved registers. */ | |
cc17453a | 853 | static void |
fba45db2 | 854 | sh_pop_frame (void) |
c906108c SS |
855 | { |
856 | register struct frame_info *frame = get_current_frame (); | |
857 | register CORE_ADDR fp; | |
858 | register int regnum; | |
c906108c SS |
859 | |
860 | if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) | |
861 | generic_pop_dummy_frame (); | |
862 | else | |
c5aa993b JM |
863 | { |
864 | fp = FRAME_FP (frame); | |
cc17453a | 865 | FRAME_INIT_SAVED_REGS (frame); |
c906108c | 866 | |
c5aa993b JM |
867 | /* Copy regs from where they were saved in the frame */ |
868 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
cc17453a EZ |
869 | if (frame->saved_regs[regnum]) |
870 | write_register (regnum, read_memory_integer (frame->saved_regs[regnum], 4)); | |
c906108c | 871 | |
cc17453a | 872 | write_register (PC_REGNUM, frame->extra_info->return_pc); |
c5aa993b JM |
873 | write_register (SP_REGNUM, fp + 4); |
874 | } | |
c906108c SS |
875 | flush_cached_frames (); |
876 | } | |
877 | ||
878 | /* Function: push_arguments | |
879 | Setup the function arguments for calling a function in the inferior. | |
880 | ||
881 | On the Hitachi SH architecture, there are four registers (R4 to R7) | |
882 | which are dedicated for passing function arguments. Up to the first | |
883 | four arguments (depending on size) may go into these registers. | |
884 | The rest go on the stack. | |
885 | ||
886 | Arguments that are smaller than 4 bytes will still take up a whole | |
887 | register or a whole 32-bit word on the stack, and will be | |
888 | right-justified in the register or the stack word. This includes | |
889 | chars, shorts, and small aggregate types. | |
890 | ||
891 | Arguments that are larger than 4 bytes may be split between two or | |
892 | more registers. If there are not enough registers free, an argument | |
893 | may be passed partly in a register (or registers), and partly on the | |
894 | stack. This includes doubles, long longs, and larger aggregates. | |
895 | As far as I know, there is no upper limit to the size of aggregates | |
896 | that will be passed in this way; in other words, the convention of | |
897 | passing a pointer to a large aggregate instead of a copy is not used. | |
898 | ||
899 | An exceptional case exists for struct arguments (and possibly other | |
900 | aggregates such as arrays) if the size is larger than 4 bytes but | |
901 | not a multiple of 4 bytes. In this case the argument is never split | |
902 | between the registers and the stack, but instead is copied in its | |
903 | entirety onto the stack, AND also copied into as many registers as | |
904 | there is room for. In other words, space in registers permitting, | |
905 | two copies of the same argument are passed in. As far as I can tell, | |
906 | only the one on the stack is used, although that may be a function | |
907 | of the level of compiler optimization. I suspect this is a compiler | |
908 | bug. Arguments of these odd sizes are left-justified within the | |
909 | word (as opposed to arguments smaller than 4 bytes, which are | |
910 | right-justified). | |
c5aa993b | 911 | |
c906108c SS |
912 | If the function is to return an aggregate type such as a struct, it |
913 | is either returned in the normal return value register R0 (if its | |
914 | size is no greater than one byte), or else the caller must allocate | |
915 | space into which the callee will copy the return value (if the size | |
916 | is greater than one byte). In this case, a pointer to the return | |
917 | value location is passed into the callee in register R2, which does | |
918 | not displace any of the other arguments passed in via registers R4 | |
919 | to R7. */ | |
920 | ||
cc17453a | 921 | static CORE_ADDR |
34e9d9bb EZ |
922 | sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp, |
923 | int struct_return, CORE_ADDR struct_addr) | |
c906108c SS |
924 | { |
925 | int stack_offset, stack_alloc; | |
926 | int argreg; | |
927 | int argnum; | |
928 | struct type *type; | |
929 | CORE_ADDR regval; | |
930 | char *val; | |
931 | char valbuf[4]; | |
932 | int len; | |
933 | int odd_sized_struct; | |
934 | ||
935 | /* first force sp to a 4-byte alignment */ | |
936 | sp = sp & ~3; | |
937 | ||
938 | /* The "struct return pointer" pseudo-argument has its own dedicated | |
939 | register */ | |
940 | if (struct_return) | |
c5aa993b | 941 | write_register (STRUCT_RETURN_REGNUM, struct_addr); |
c906108c SS |
942 | |
943 | /* Now make sure there's space on the stack */ | |
cc17453a | 944 | for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) |
c5aa993b JM |
945 | stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); |
946 | sp -= stack_alloc; /* make room on stack for args */ | |
c906108c | 947 | |
c906108c SS |
948 | /* Now load as many as possible of the first arguments into |
949 | registers, and push the rest onto the stack. There are 16 bytes | |
950 | in four registers available. Loop thru args from first to last. */ | |
951 | ||
952 | argreg = ARG0_REGNUM; | |
953 | for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) | |
954 | { | |
955 | type = VALUE_TYPE (args[argnum]); | |
c5aa993b JM |
956 | len = TYPE_LENGTH (type); |
957 | memset (valbuf, 0, sizeof (valbuf)); | |
c906108c | 958 | if (len < 4) |
cc17453a EZ |
959 | { |
960 | /* value gets right-justified in the register or stack word */ | |
c5aa993b JM |
961 | memcpy (valbuf + (4 - len), |
962 | (char *) VALUE_CONTENTS (args[argnum]), len); | |
963 | val = valbuf; | |
964 | } | |
c906108c | 965 | else |
c5aa993b | 966 | val = (char *) VALUE_CONTENTS (args[argnum]); |
c906108c SS |
967 | |
968 | if (len > 4 && (len & 3) != 0) | |
c5aa993b JM |
969 | odd_sized_struct = 1; /* such structs go entirely on stack */ |
970 | else | |
c906108c SS |
971 | odd_sized_struct = 0; |
972 | while (len > 0) | |
973 | { | |
974 | if (argreg > ARGLAST_REGNUM || odd_sized_struct) | |
c5aa993b | 975 | { /* must go on the stack */ |
c906108c SS |
976 | write_memory (sp + stack_offset, val, 4); |
977 | stack_offset += 4; | |
978 | } | |
979 | /* NOTE WELL!!!!! This is not an "else if" clause!!! | |
980 | That's because some *&^%$ things get passed on the stack | |
981 | AND in the registers! */ | |
982 | if (argreg <= ARGLAST_REGNUM) | |
c5aa993b JM |
983 | { /* there's room in a register */ |
984 | regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); | |
c906108c SS |
985 | write_register (argreg++, regval); |
986 | } | |
987 | /* Store the value 4 bytes at a time. This means that things | |
988 | larger than 4 bytes may go partly in registers and partly | |
989 | on the stack. */ | |
c5aa993b JM |
990 | len -= REGISTER_RAW_SIZE (argreg); |
991 | val += REGISTER_RAW_SIZE (argreg); | |
c906108c SS |
992 | } |
993 | } | |
994 | return sp; | |
995 | } | |
996 | ||
997 | /* Function: push_return_address (pc) | |
998 | Set up the return address for the inferior function call. | |
999 | Needed for targets where we don't actually execute a JSR/BSR instruction */ | |
1000 | ||
cc17453a | 1001 | static CORE_ADDR |
fba45db2 | 1002 | sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp) |
c906108c SS |
1003 | { |
1004 | write_register (PR_REGNUM, CALL_DUMMY_ADDRESS ()); | |
1005 | return sp; | |
1006 | } | |
1007 | ||
1008 | /* Function: fix_call_dummy | |
1009 | Poke the callee function's address into the destination part of | |
1010 | the CALL_DUMMY. The address is actually stored in a data word | |
1011 | following the actualy CALL_DUMMY instructions, which will load | |
1012 | it into a register using PC-relative addressing. This function | |
1013 | expects the CALL_DUMMY to look like this: | |
1014 | ||
c5aa993b JM |
1015 | mov.w @(2,PC), R8 |
1016 | jsr @R8 | |
1017 | nop | |
1018 | trap | |
1019 | <destination> | |
1020 | */ | |
c906108c SS |
1021 | |
1022 | #if 0 | |
1023 | void | |
fba45db2 KB |
1024 | sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, |
1025 | value_ptr *args, struct type *type, int gcc_p) | |
c906108c SS |
1026 | { |
1027 | *(unsigned long *) (dummy + 8) = fun; | |
1028 | } | |
1029 | #endif | |
1030 | ||
cc17453a EZ |
1031 | static int |
1032 | sh_coerce_float_to_double (struct type *formal, struct type *actual) | |
1033 | { | |
1034 | return 1; | |
1035 | } | |
c906108c | 1036 | |
cc17453a EZ |
1037 | /* Find a function's return value in the appropriate registers (in |
1038 | regbuf), and copy it into valbuf. Extract from an array REGBUF | |
1039 | containing the (raw) register state a function return value of type | |
1040 | TYPE, and copy that, in virtual format, into VALBUF. */ | |
1041 | static void | |
fba45db2 | 1042 | sh_extract_return_value (struct type *type, char *regbuf, char *valbuf) |
c906108c | 1043 | { |
cc17453a | 1044 | int len = TYPE_LENGTH (type); |
c906108c | 1045 | |
cc17453a EZ |
1046 | if (len <= 4) |
1047 | memcpy (valbuf, ((char *) regbuf) + 4 - len, len); | |
1048 | else if (len <= 8) | |
1049 | memcpy (valbuf, ((char *) regbuf) + 8 - len, len); | |
1050 | else | |
1051 | error ("bad size for return value"); | |
1052 | } | |
c906108c | 1053 | |
cc17453a EZ |
1054 | /* Write into appropriate registers a function return value |
1055 | of type TYPE, given in virtual format. | |
1056 | If the architecture is sh4 or sh3e, store a function's return value | |
1057 | in the R0 general register or in the FP0 floating point register, | |
1058 | depending on the type of the return value. In all the other cases | |
1059 | the result is stored in r0. */ | |
1060 | static void | |
1061 | sh_default_store_return_value (struct type *type, char *valbuf) | |
1062 | { | |
d19b71be MS |
1063 | char buf[32]; /* more than enough... */ |
1064 | ||
1065 | if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (R0_REGNUM)) | |
1066 | { | |
1067 | /* Add leading zeros to the value. */ | |
1068 | memset (buf, 0, REGISTER_RAW_SIZE (R0_REGNUM)); | |
1069 | memcpy (buf + REGISTER_RAW_SIZE (R0_REGNUM) - TYPE_LENGTH (type), | |
1070 | valbuf, TYPE_LENGTH (type)); | |
1071 | write_register_bytes (REGISTER_BYTE (R0_REGNUM), buf, | |
1072 | REGISTER_RAW_SIZE (R0_REGNUM)); | |
1073 | } | |
1074 | else | |
1075 | write_register_bytes (REGISTER_BYTE (R0_REGNUM), valbuf, | |
1076 | TYPE_LENGTH (type)); | |
cc17453a | 1077 | } |
c906108c | 1078 | |
cc17453a EZ |
1079 | static void |
1080 | sh3e_sh4_store_return_value (struct type *type, char *valbuf) | |
1081 | { | |
1082 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
1083 | write_register_bytes (REGISTER_BYTE (FP0_REGNUM), | |
1084 | valbuf, TYPE_LENGTH (type)); | |
1085 | else | |
d19b71be | 1086 | sh_default_store_return_value (type, valbuf); |
c906108c SS |
1087 | } |
1088 | ||
cc17453a | 1089 | |
c906108c SS |
1090 | /* Print the registers in a form similar to the E7000 */ |
1091 | ||
1092 | static void | |
fba45db2 | 1093 | sh_generic_show_regs (void) |
c906108c | 1094 | { |
cc17453a EZ |
1095 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1096 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1097 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
cc17453a EZ |
1098 | (long) read_register (PR_REGNUM), |
1099 | (long) read_register (MACH_REGNUM), | |
1100 | (long) read_register (MACL_REGNUM)); | |
1101 | ||
1102 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1103 | (long) read_register (GBR_REGNUM), | |
1104 | (long) read_register (VBR_REGNUM)); | |
1105 | ||
1106 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1107 | (long) read_register (0), | |
1108 | (long) read_register (1), | |
1109 | (long) read_register (2), | |
1110 | (long) read_register (3), | |
1111 | (long) read_register (4), | |
1112 | (long) read_register (5), | |
1113 | (long) read_register (6), | |
1114 | (long) read_register (7)); | |
1115 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1116 | (long) read_register (8), | |
1117 | (long) read_register (9), | |
1118 | (long) read_register (10), | |
1119 | (long) read_register (11), | |
1120 | (long) read_register (12), | |
1121 | (long) read_register (13), | |
1122 | (long) read_register (14), | |
1123 | (long) read_register (15)); | |
1124 | } | |
c906108c | 1125 | |
cc17453a | 1126 | static void |
fba45db2 | 1127 | sh3_show_regs (void) |
cc17453a | 1128 | { |
d4f3574e SS |
1129 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1130 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1131 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
d4f3574e SS |
1132 | (long) read_register (PR_REGNUM), |
1133 | (long) read_register (MACH_REGNUM), | |
1134 | (long) read_register (MACL_REGNUM)); | |
1135 | ||
1136 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1137 | (long) read_register (GBR_REGNUM), | |
1138 | (long) read_register (VBR_REGNUM)); | |
cc17453a EZ |
1139 | printf_filtered (" SSR=%08lx SPC=%08lx", |
1140 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1141 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
c906108c | 1142 | |
d4f3574e SS |
1143 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
1144 | (long) read_register (0), | |
1145 | (long) read_register (1), | |
1146 | (long) read_register (2), | |
1147 | (long) read_register (3), | |
1148 | (long) read_register (4), | |
1149 | (long) read_register (5), | |
1150 | (long) read_register (6), | |
1151 | (long) read_register (7)); | |
1152 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1153 | (long) read_register (8), | |
1154 | (long) read_register (9), | |
1155 | (long) read_register (10), | |
1156 | (long) read_register (11), | |
1157 | (long) read_register (12), | |
1158 | (long) read_register (13), | |
1159 | (long) read_register (14), | |
1160 | (long) read_register (15)); | |
c906108c SS |
1161 | } |
1162 | ||
53116e27 | 1163 | |
cc17453a | 1164 | static void |
fba45db2 | 1165 | sh3e_show_regs (void) |
cc17453a EZ |
1166 | { |
1167 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1168 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1169 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
cc17453a EZ |
1170 | (long) read_register (PR_REGNUM), |
1171 | (long) read_register (MACH_REGNUM), | |
1172 | (long) read_register (MACL_REGNUM)); | |
1173 | ||
1174 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1175 | (long) read_register (GBR_REGNUM), | |
1176 | (long) read_register (VBR_REGNUM)); | |
1177 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1178 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1179 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1180 | printf_filtered (" FPUL=%08lx FPSCR=%08lx", | |
1181 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM), | |
1182 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM)); | |
c906108c | 1183 | |
cc17453a EZ |
1184 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
1185 | (long) read_register (0), | |
1186 | (long) read_register (1), | |
1187 | (long) read_register (2), | |
1188 | (long) read_register (3), | |
1189 | (long) read_register (4), | |
1190 | (long) read_register (5), | |
1191 | (long) read_register (6), | |
1192 | (long) read_register (7)); | |
1193 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1194 | (long) read_register (8), | |
1195 | (long) read_register (9), | |
1196 | (long) read_register (10), | |
1197 | (long) read_register (11), | |
1198 | (long) read_register (12), | |
1199 | (long) read_register (13), | |
1200 | (long) read_register (14), | |
1201 | (long) read_register (15)); | |
1202 | ||
1203 | printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1204 | (long) read_register (FP0_REGNUM + 0), | |
1205 | (long) read_register (FP0_REGNUM + 1), | |
1206 | (long) read_register (FP0_REGNUM + 2), | |
1207 | (long) read_register (FP0_REGNUM + 3), | |
1208 | (long) read_register (FP0_REGNUM + 4), | |
1209 | (long) read_register (FP0_REGNUM + 5), | |
1210 | (long) read_register (FP0_REGNUM + 6), | |
1211 | (long) read_register (FP0_REGNUM + 7)); | |
1212 | printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1213 | (long) read_register (FP0_REGNUM + 8), | |
1214 | (long) read_register (FP0_REGNUM + 9), | |
1215 | (long) read_register (FP0_REGNUM + 10), | |
1216 | (long) read_register (FP0_REGNUM + 11), | |
1217 | (long) read_register (FP0_REGNUM + 12), | |
1218 | (long) read_register (FP0_REGNUM + 13), | |
1219 | (long) read_register (FP0_REGNUM + 14), | |
1220 | (long) read_register (FP0_REGNUM + 15)); | |
1221 | } | |
1222 | ||
1223 | static void | |
fba45db2 | 1224 | sh3_dsp_show_regs (void) |
c906108c | 1225 | { |
cc17453a EZ |
1226 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", |
1227 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1228 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
cc17453a EZ |
1229 | (long) read_register (PR_REGNUM), |
1230 | (long) read_register (MACH_REGNUM), | |
1231 | (long) read_register (MACL_REGNUM)); | |
c906108c | 1232 | |
cc17453a EZ |
1233 | printf_filtered ("GBR=%08lx VBR=%08lx", |
1234 | (long) read_register (GBR_REGNUM), | |
1235 | (long) read_register (VBR_REGNUM)); | |
1236 | ||
1237 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1238 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1239 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1240 | ||
1241 | printf_filtered (" DSR=%08lx", | |
1242 | (long) read_register (gdbarch_tdep (current_gdbarch)->DSR_REGNUM)); | |
1243 | ||
1244 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1245 | (long) read_register (0), | |
1246 | (long) read_register (1), | |
1247 | (long) read_register (2), | |
1248 | (long) read_register (3), | |
1249 | (long) read_register (4), | |
1250 | (long) read_register (5), | |
1251 | (long) read_register (6), | |
1252 | (long) read_register (7)); | |
1253 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1254 | (long) read_register (8), | |
1255 | (long) read_register (9), | |
1256 | (long) read_register (10), | |
1257 | (long) read_register (11), | |
1258 | (long) read_register (12), | |
1259 | (long) read_register (13), | |
1260 | (long) read_register (14), | |
1261 | (long) read_register (15)); | |
1262 | ||
1263 | printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", | |
1264 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0G_REGNUM) & 0xff, | |
1265 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0_REGNUM), | |
1266 | (long) read_register (gdbarch_tdep (current_gdbarch)->M0_REGNUM), | |
1267 | (long) read_register (gdbarch_tdep (current_gdbarch)->X0_REGNUM), | |
1268 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y0_REGNUM), | |
1269 | (long) read_register (gdbarch_tdep (current_gdbarch)->RS_REGNUM), | |
1270 | (long) read_register (gdbarch_tdep (current_gdbarch)->MOD_REGNUM)); | |
1271 | printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", | |
1272 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1G_REGNUM) & 0xff, | |
1273 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1_REGNUM), | |
1274 | (long) read_register (gdbarch_tdep (current_gdbarch)->M1_REGNUM), | |
1275 | (long) read_register (gdbarch_tdep (current_gdbarch)->X1_REGNUM), | |
1276 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y1_REGNUM), | |
1277 | (long) read_register (gdbarch_tdep (current_gdbarch)->RE_REGNUM)); | |
c906108c SS |
1278 | } |
1279 | ||
cc17453a | 1280 | static void |
fba45db2 | 1281 | sh4_show_regs (void) |
cc17453a EZ |
1282 | { |
1283 | int pr = read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM) & 0x80000; | |
1284 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1285 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1286 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
cc17453a EZ |
1287 | (long) read_register (PR_REGNUM), |
1288 | (long) read_register (MACH_REGNUM), | |
1289 | (long) read_register (MACL_REGNUM)); | |
1290 | ||
1291 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1292 | (long) read_register (GBR_REGNUM), | |
1293 | (long) read_register (VBR_REGNUM)); | |
1294 | printf_filtered (" SSR=%08lx SPC=%08lx", | |
1295 | (long) read_register (gdbarch_tdep (current_gdbarch)->SSR_REGNUM), | |
1296 | (long) read_register (gdbarch_tdep (current_gdbarch)->SPC_REGNUM)); | |
1297 | printf_filtered (" FPUL=%08lx FPSCR=%08lx", | |
1298 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM), | |
1299 | (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM)); | |
1300 | ||
1301 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1302 | (long) read_register (0), | |
1303 | (long) read_register (1), | |
1304 | (long) read_register (2), | |
1305 | (long) read_register (3), | |
1306 | (long) read_register (4), | |
1307 | (long) read_register (5), | |
1308 | (long) read_register (6), | |
1309 | (long) read_register (7)); | |
1310 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1311 | (long) read_register (8), | |
1312 | (long) read_register (9), | |
1313 | (long) read_register (10), | |
1314 | (long) read_register (11), | |
1315 | (long) read_register (12), | |
1316 | (long) read_register (13), | |
1317 | (long) read_register (14), | |
1318 | (long) read_register (15)); | |
1319 | ||
1320 | printf_filtered ((pr | |
1321 | ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" | |
1322 | : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1323 | (long) read_register (FP0_REGNUM + 0), | |
1324 | (long) read_register (FP0_REGNUM + 1), | |
1325 | (long) read_register (FP0_REGNUM + 2), | |
1326 | (long) read_register (FP0_REGNUM + 3), | |
1327 | (long) read_register (FP0_REGNUM + 4), | |
1328 | (long) read_register (FP0_REGNUM + 5), | |
1329 | (long) read_register (FP0_REGNUM + 6), | |
1330 | (long) read_register (FP0_REGNUM + 7)); | |
1331 | printf_filtered ((pr | |
1332 | ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" | |
1333 | : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), | |
1334 | (long) read_register (FP0_REGNUM + 8), | |
1335 | (long) read_register (FP0_REGNUM + 9), | |
1336 | (long) read_register (FP0_REGNUM + 10), | |
1337 | (long) read_register (FP0_REGNUM + 11), | |
1338 | (long) read_register (FP0_REGNUM + 12), | |
1339 | (long) read_register (FP0_REGNUM + 13), | |
1340 | (long) read_register (FP0_REGNUM + 14), | |
1341 | (long) read_register (FP0_REGNUM + 15)); | |
1342 | } | |
1343 | ||
1344 | static void | |
fba45db2 | 1345 | sh_dsp_show_regs (void) |
cc17453a EZ |
1346 | { |
1347 | printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", | |
1348 | paddr (read_register (PC_REGNUM)), | |
c62a7c7b | 1349 | (long) read_register (gdbarch_tdep (current_gdbarch)->SR_REGNUM), |
cc17453a EZ |
1350 | (long) read_register (PR_REGNUM), |
1351 | (long) read_register (MACH_REGNUM), | |
1352 | (long) read_register (MACL_REGNUM)); | |
1353 | ||
1354 | printf_filtered ("GBR=%08lx VBR=%08lx", | |
1355 | (long) read_register (GBR_REGNUM), | |
1356 | (long) read_register (VBR_REGNUM)); | |
1357 | ||
1358 | printf_filtered (" DSR=%08lx", | |
1359 | (long) read_register (gdbarch_tdep (current_gdbarch)->DSR_REGNUM)); | |
1360 | ||
1361 | printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1362 | (long) read_register (0), | |
1363 | (long) read_register (1), | |
1364 | (long) read_register (2), | |
1365 | (long) read_register (3), | |
1366 | (long) read_register (4), | |
1367 | (long) read_register (5), | |
1368 | (long) read_register (6), | |
1369 | (long) read_register (7)); | |
1370 | printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", | |
1371 | (long) read_register (8), | |
1372 | (long) read_register (9), | |
1373 | (long) read_register (10), | |
1374 | (long) read_register (11), | |
1375 | (long) read_register (12), | |
1376 | (long) read_register (13), | |
1377 | (long) read_register (14), | |
1378 | (long) read_register (15)); | |
1379 | ||
1380 | printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", | |
1381 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0G_REGNUM) & 0xff, | |
1382 | (long) read_register (gdbarch_tdep (current_gdbarch)->A0_REGNUM), | |
1383 | (long) read_register (gdbarch_tdep (current_gdbarch)->M0_REGNUM), | |
1384 | (long) read_register (gdbarch_tdep (current_gdbarch)->X0_REGNUM), | |
1385 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y0_REGNUM), | |
1386 | (long) read_register (gdbarch_tdep (current_gdbarch)->RS_REGNUM), | |
1387 | (long) read_register (gdbarch_tdep (current_gdbarch)->MOD_REGNUM)); | |
1388 | printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", | |
1389 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1G_REGNUM) & 0xff, | |
1390 | (long) read_register (gdbarch_tdep (current_gdbarch)->A1_REGNUM), | |
1391 | (long) read_register (gdbarch_tdep (current_gdbarch)->M1_REGNUM), | |
1392 | (long) read_register (gdbarch_tdep (current_gdbarch)->X1_REGNUM), | |
1393 | (long) read_register (gdbarch_tdep (current_gdbarch)->Y1_REGNUM), | |
1394 | (long) read_register (gdbarch_tdep (current_gdbarch)->RE_REGNUM)); | |
1395 | } | |
1396 | ||
53116e27 EZ |
1397 | void sh_show_regs_command (char *args, int from_tty) |
1398 | { | |
1399 | if (sh_show_regs) | |
1400 | (*sh_show_regs)(); | |
1401 | } | |
1402 | ||
cc17453a EZ |
1403 | /* Index within `registers' of the first byte of the space for |
1404 | register N. */ | |
1405 | static int | |
fba45db2 | 1406 | sh_default_register_byte (int reg_nr) |
8db62801 | 1407 | { |
cc17453a EZ |
1408 | return (reg_nr * 4); |
1409 | } | |
1410 | ||
53116e27 | 1411 | static int |
fba45db2 | 1412 | sh_sh4_register_byte (int reg_nr) |
53116e27 EZ |
1413 | { |
1414 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1415 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
53116e27 EZ |
1416 | return (dr_reg_base_num (reg_nr) * 4); |
1417 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
e6c42fda | 1418 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) |
53116e27 EZ |
1419 | return (fv_reg_base_num (reg_nr) * 4); |
1420 | else | |
1421 | return (reg_nr * 4); | |
1422 | } | |
1423 | ||
cc17453a EZ |
1424 | /* Number of bytes of storage in the actual machine representation for |
1425 | register REG_NR. */ | |
1426 | static int | |
fba45db2 | 1427 | sh_default_register_raw_size (int reg_nr) |
cc17453a EZ |
1428 | { |
1429 | return 4; | |
1430 | } | |
1431 | ||
53116e27 | 1432 | static int |
fba45db2 | 1433 | sh_sh4_register_raw_size (int reg_nr) |
53116e27 EZ |
1434 | { |
1435 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1436 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
53116e27 EZ |
1437 | return 8; |
1438 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
e6c42fda | 1439 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) |
53116e27 EZ |
1440 | return 16; |
1441 | else | |
1442 | return 4; | |
1443 | } | |
1444 | ||
cc17453a EZ |
1445 | /* Number of bytes of storage in the program's representation |
1446 | for register N. */ | |
1447 | static int | |
fba45db2 | 1448 | sh_register_virtual_size (int reg_nr) |
cc17453a EZ |
1449 | { |
1450 | return 4; | |
1451 | } | |
1452 | ||
1453 | /* Return the GDB type object for the "standard" data type | |
1454 | of data in register N. */ | |
1455 | ||
1456 | static struct type * | |
fba45db2 | 1457 | sh_sh3e_register_virtual_type (int reg_nr) |
cc17453a EZ |
1458 | { |
1459 | if ((reg_nr >= FP0_REGNUM | |
e6c42fda | 1460 | && (reg_nr <= gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM)) |
cc17453a EZ |
1461 | || (reg_nr == gdbarch_tdep (current_gdbarch)->FPUL_REGNUM)) |
1462 | return builtin_type_float; | |
8db62801 | 1463 | else |
cc17453a EZ |
1464 | return builtin_type_int; |
1465 | } | |
1466 | ||
53116e27 | 1467 | static struct type * |
fba45db2 | 1468 | sh_sh4_register_virtual_type (int reg_nr) |
53116e27 EZ |
1469 | { |
1470 | if ((reg_nr >= FP0_REGNUM | |
e6c42fda | 1471 | && (reg_nr <= gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM)) |
53116e27 EZ |
1472 | || (reg_nr == gdbarch_tdep (current_gdbarch)->FPUL_REGNUM)) |
1473 | return builtin_type_float; | |
1474 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1475 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
53116e27 EZ |
1476 | return builtin_type_double; |
1477 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
e6c42fda | 1478 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) |
53116e27 EZ |
1479 | return sh_sh4_build_float_register_type (3); |
1480 | else | |
1481 | return builtin_type_int; | |
1482 | } | |
1483 | ||
1484 | static struct type * | |
1485 | sh_sh4_build_float_register_type (int high) | |
1486 | { | |
1487 | struct type *temp; | |
1488 | ||
1489 | temp = create_range_type (NULL, builtin_type_int, 0, high); | |
1490 | return create_array_type (NULL, builtin_type_float, temp); | |
1491 | } | |
1492 | ||
cc17453a | 1493 | static struct type * |
fba45db2 | 1494 | sh_default_register_virtual_type (int reg_nr) |
cc17453a EZ |
1495 | { |
1496 | return builtin_type_int; | |
1497 | } | |
1498 | ||
fb409745 EZ |
1499 | /* On the sh4, the DRi pseudo registers are problematic if the target |
1500 | is little endian. When the user writes one of those registers, for | |
1501 | instance with 'ser var $dr0=1', we want the double to be stored | |
1502 | like this: | |
1503 | fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f | |
1504 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1505 | ||
1506 | This corresponds to little endian byte order & big endian word | |
1507 | order. However if we let gdb write the register w/o conversion, it | |
1508 | will write fr0 and fr1 this way: | |
1509 | fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1510 | fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f | |
1511 | because it will consider fr0 and fr1 as a single LE stretch of memory. | |
1512 | ||
1513 | To achieve what we want we must force gdb to store things in | |
1514 | floatformat_ieee_double_littlebyte_bigword (which is defined in | |
1515 | include/floatformat.h and libiberty/floatformat.c. | |
1516 | ||
1517 | In case the target is big endian, there is no problem, the | |
1518 | raw bytes will look like: | |
1519 | fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 | |
1520 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | |
1521 | ||
1522 | The other pseudo registers (the FVs) also don't pose a problem | |
1523 | because they are stored as 4 individual FP elements. */ | |
1524 | ||
1525 | int | |
1526 | sh_sh4_register_convertible (int nr) | |
1527 | { | |
1528 | if (TARGET_BYTE_ORDER == LITTLE_ENDIAN) | |
1529 | return (gdbarch_tdep (current_gdbarch)->DR0_REGNUM <= nr | |
e6c42fda | 1530 | && nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM); |
fb409745 EZ |
1531 | else |
1532 | return 0; | |
1533 | } | |
1534 | ||
1535 | void | |
1536 | sh_sh4_register_convert_to_virtual (int regnum, struct type *type, | |
1537 | char *from, char *to) | |
1538 | { | |
1539 | if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1540 | && regnum <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
fb409745 EZ |
1541 | { |
1542 | DOUBLEST val; | |
1543 | floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); | |
1544 | store_floating(to, TYPE_LENGTH(type), val); | |
1545 | } | |
1546 | else | |
1547 | error("sh_register_convert_to_virtual called with non DR register number"); | |
1548 | } | |
1549 | ||
1550 | void | |
1551 | sh_sh4_register_convert_to_raw (struct type *type, int regnum, | |
1552 | char *from, char *to) | |
1553 | { | |
1554 | if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1555 | && regnum <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
fb409745 EZ |
1556 | { |
1557 | DOUBLEST val = extract_floating (from, TYPE_LENGTH(type)); | |
1558 | floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to); | |
1559 | } | |
1560 | else | |
1561 | error("sh_register_convert_to_raw called with non DR register number"); | |
1562 | } | |
1563 | ||
53116e27 EZ |
1564 | void |
1565 | sh_fetch_pseudo_register (int reg_nr) | |
1566 | { | |
1567 | int base_regnum, portion; | |
1568 | ||
1569 | if (!register_cached (reg_nr)) | |
1570 | { | |
1571 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1572 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
53116e27 EZ |
1573 | { |
1574 | base_regnum = dr_reg_base_num (reg_nr); | |
1575 | ||
1576 | /* Read the real regs for which this one is an alias. */ | |
1577 | for (portion = 0; portion < 2; portion++) | |
1578 | if (!register_cached (base_regnum + portion)) | |
1579 | target_fetch_registers (base_regnum + portion); | |
1580 | } | |
1581 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
e6c42fda | 1582 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) |
53116e27 EZ |
1583 | { |
1584 | base_regnum = fv_reg_base_num (reg_nr); | |
1585 | ||
1586 | /* Read the real regs for which this one is an alias. */ | |
1587 | for (portion = 0; portion < 4; portion++) | |
1588 | if (!register_cached (base_regnum + portion)) | |
1589 | target_fetch_registers (base_regnum + portion); | |
1590 | ||
1591 | } | |
1592 | register_valid [reg_nr] = 1; | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | void | |
1597 | sh_store_pseudo_register (int reg_nr) | |
1598 | { | |
1599 | int base_regnum, portion; | |
1600 | ||
1601 | if (reg_nr >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM | |
e6c42fda | 1602 | && reg_nr <= gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) |
53116e27 EZ |
1603 | { |
1604 | base_regnum = dr_reg_base_num (reg_nr); | |
1605 | ||
1606 | /* Write the real regs for which this one is an alias. */ | |
1607 | for (portion = 0; portion < 2; portion++) | |
1608 | { | |
1609 | register_valid[base_regnum + portion] = 1; | |
1610 | target_store_registers (base_regnum + portion); | |
1611 | } | |
1612 | } | |
1613 | else if (reg_nr >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM | |
e6c42fda | 1614 | && reg_nr <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) |
53116e27 EZ |
1615 | { |
1616 | base_regnum = fv_reg_base_num (reg_nr); | |
1617 | ||
1618 | /* Write the real regs for which this one is an alias. */ | |
1619 | for (portion = 0; portion < 4; portion++) | |
1620 | { | |
1621 | register_valid[base_regnum + portion] = 1; | |
1622 | target_store_registers (base_regnum + portion); | |
1623 | } | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | static int | |
1628 | fv_reg_base_num (int fv_regnum) | |
1629 | { | |
1630 | int fp_regnum; | |
1631 | ||
1632 | fp_regnum = FP0_REGNUM + | |
1633 | (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4; | |
1634 | return fp_regnum; | |
1635 | } | |
1636 | ||
1637 | static int | |
1638 | dr_reg_base_num (int dr_regnum) | |
1639 | { | |
1640 | int fp_regnum; | |
1641 | ||
1642 | fp_regnum = FP0_REGNUM + | |
1643 | (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2; | |
1644 | return fp_regnum; | |
1645 | } | |
1646 | ||
1647 | static void | |
1648 | do_fv_register_info (int fv_regnum) | |
1649 | { | |
1650 | int first_fp_reg_num = fv_reg_base_num (fv_regnum); | |
1651 | printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", | |
1652 | fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM, | |
1653 | (int) read_register (first_fp_reg_num), | |
1654 | (int) read_register (first_fp_reg_num + 1), | |
1655 | (int) read_register (first_fp_reg_num + 2), | |
1656 | (int) read_register (first_fp_reg_num + 3)); | |
1657 | } | |
1658 | ||
1659 | static void | |
1660 | do_dr_register_info (int dr_regnum) | |
1661 | { | |
1662 | int first_fp_reg_num = dr_reg_base_num (dr_regnum); | |
1663 | ||
1664 | printf_filtered ("dr%d\t0x%08x%08x\n", | |
1665 | dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM, | |
1666 | (int) read_register (first_fp_reg_num), | |
1667 | (int) read_register (first_fp_reg_num + 1)); | |
1668 | } | |
1669 | ||
1670 | static void | |
1671 | sh_do_pseudo_register (int regnum) | |
1672 | { | |
1673 | if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS) | |
8e1a459b | 1674 | internal_error ("Invalid pseudo register number %d\n", regnum); |
a38d2a54 EZ |
1675 | else if (regnum >= gdbarch_tdep (current_gdbarch)->DR0_REGNUM |
1676 | && regnum < gdbarch_tdep (current_gdbarch)->DR_LAST_REGNUM) | |
53116e27 | 1677 | do_dr_register_info (regnum); |
a38d2a54 EZ |
1678 | else if (regnum >= gdbarch_tdep (current_gdbarch)->FV0_REGNUM |
1679 | && regnum <= gdbarch_tdep (current_gdbarch)->FV_LAST_REGNUM) | |
53116e27 EZ |
1680 | do_fv_register_info (regnum); |
1681 | } | |
1682 | ||
1683 | ||
1684 | static void | |
1685 | sh_do_fp_register (int regnum) | |
1686 | { /* do values for FP (float) regs */ | |
1687 | char *raw_buffer; | |
1688 | double flt; /* double extracted from raw hex data */ | |
1689 | int inv; | |
1690 | int j; | |
1691 | ||
1692 | /* Allocate space for the float. */ | |
1693 | raw_buffer = (char *) alloca (REGISTER_RAW_SIZE (FP0_REGNUM)); | |
1694 | ||
1695 | /* Get the data in raw format. */ | |
1696 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) | |
1697 | error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum)); | |
1698 | ||
1699 | /* Get the register as a number */ | |
1700 | flt = unpack_double (builtin_type_float, raw_buffer, &inv); | |
1701 | ||
1702 | /* Print the name and some spaces. */ | |
1703 | fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); | |
1704 | print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); | |
1705 | ||
1706 | /* Print the value. */ | |
1707 | printf_filtered (inv ? "<invalid float>" : "%-10.9g", flt); | |
1708 | ||
1709 | /* Print the fp register as hex. */ | |
1710 | printf_filtered ("\t(raw 0x"); | |
1711 | for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++) | |
1712 | { | |
1713 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
1714 | : REGISTER_RAW_SIZE (regnum) - 1 - j; | |
1715 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
1716 | } | |
1717 | printf_filtered (")"); | |
1718 | printf_filtered ("\n"); | |
1719 | } | |
1720 | ||
1721 | static void | |
1722 | sh_do_register (int regnum) | |
1723 | { | |
1724 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1725 | ||
1726 | fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); | |
1727 | print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); | |
1728 | ||
1729 | /* Get the data in raw format. */ | |
1730 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) | |
1731 | printf_filtered ("*value not available*\n"); | |
1732 | ||
1733 | val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, | |
1734 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1735 | printf_filtered ("\t"); | |
1736 | val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, | |
1737 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1738 | printf_filtered ("\n"); | |
1739 | } | |
1740 | ||
1741 | static void | |
1742 | sh_print_register (int regnum) | |
1743 | { | |
1744 | if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS) | |
1745 | internal_error ("Invalid register number %d\n", regnum); | |
1746 | ||
e30839fe | 1747 | else if (regnum >= 0 && regnum < NUM_REGS) |
53116e27 EZ |
1748 | { |
1749 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) | |
1750 | sh_do_fp_register (regnum); /* FP regs */ | |
1751 | else | |
1752 | sh_do_register (regnum); /* All other regs */ | |
1753 | } | |
1754 | ||
1755 | else if (regnum < NUM_REGS + NUM_PSEUDO_REGS) | |
1756 | sh_do_pseudo_register (regnum); | |
1757 | } | |
1758 | ||
1759 | void | |
1760 | sh_do_registers_info (int regnum, int fpregs) | |
1761 | { | |
1762 | if (regnum != -1) /* do one specified register */ | |
1763 | { | |
1764 | if (*(REGISTER_NAME (regnum)) == '\0') | |
1765 | error ("Not a valid register for the current processor type"); | |
1766 | ||
1767 | sh_print_register (regnum); | |
1768 | } | |
1769 | else | |
1770 | /* do all (or most) registers */ | |
1771 | { | |
1772 | regnum = 0; | |
1773 | while (regnum < NUM_REGS) | |
1774 | { | |
1775 | /* If the register name is empty, it is undefined for this | |
1776 | processor, so don't display anything. */ | |
1777 | if (REGISTER_NAME (regnum) == NULL | |
1778 | || *(REGISTER_NAME (regnum)) == '\0') | |
1779 | { | |
1780 | regnum++; | |
1781 | continue; | |
1782 | } | |
1783 | ||
1784 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) | |
1785 | { | |
1786 | if (fpregs) | |
1787 | { | |
1788 | /* true for "INFO ALL-REGISTERS" command */ | |
1789 | sh_do_fp_register (regnum); /* FP regs */ | |
1790 | regnum ++; | |
1791 | } | |
1792 | else | |
e6c42fda | 1793 | regnum += (gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */ |
53116e27 EZ |
1794 | } |
1795 | else | |
1796 | { | |
1797 | sh_do_register (regnum); /* All other regs */ | |
1798 | regnum++; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | if (fpregs) | |
1803 | while (regnum < NUM_REGS + NUM_PSEUDO_REGS) | |
1804 | { | |
1805 | sh_do_pseudo_register (regnum); | |
1806 | regnum++; | |
1807 | } | |
1808 | } | |
1809 | } | |
1810 | ||
1a8629c7 MS |
1811 | #ifdef SVR4_SHARED_LIBS |
1812 | ||
1813 | /* Fetch (and possibly build) an appropriate link_map_offsets structure | |
1814 | for native i386 linux targets using the struct offsets defined in | |
1815 | link.h (but without actual reference to that file). | |
1816 | ||
1817 | This makes it possible to access i386-linux shared libraries from | |
1818 | a gdb that was not built on an i386-linux host (for cross debugging). | |
1819 | */ | |
1820 | ||
1821 | struct link_map_offsets * | |
1822 | sh_linux_svr4_fetch_link_map_offsets (void) | |
1823 | { | |
1824 | static struct link_map_offsets lmo; | |
1825 | static struct link_map_offsets *lmp = 0; | |
1826 | ||
1827 | if (lmp == 0) | |
1828 | { | |
1829 | lmp = &lmo; | |
1830 | ||
1831 | lmo.r_debug_size = 8; /* 20 not actual size but all we need */ | |
1832 | ||
1833 | lmo.r_map_offset = 4; | |
1834 | lmo.r_map_size = 4; | |
1835 | ||
1836 | lmo.link_map_size = 20; /* 552 not actual size but all we need */ | |
1837 | ||
1838 | lmo.l_addr_offset = 0; | |
1839 | lmo.l_addr_size = 4; | |
1840 | ||
1841 | lmo.l_name_offset = 4; | |
1842 | lmo.l_name_size = 4; | |
1843 | ||
1844 | lmo.l_next_offset = 12; | |
1845 | lmo.l_next_size = 4; | |
1846 | ||
1847 | lmo.l_prev_offset = 16; | |
1848 | lmo.l_prev_size = 4; | |
1849 | } | |
1850 | ||
1851 | return lmp; | |
1852 | } | |
1853 | #endif /* SVR4_SHARED_LIBS */ | |
1854 | ||
cc17453a EZ |
1855 | static gdbarch_init_ftype sh_gdbarch_init; |
1856 | ||
1857 | static struct gdbarch * | |
fba45db2 | 1858 | sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
cc17453a EZ |
1859 | { |
1860 | static LONGEST sh_call_dummy_words[] = {0}; | |
1861 | struct gdbarch *gdbarch; | |
1862 | struct gdbarch_tdep *tdep; | |
1863 | gdbarch_register_name_ftype *sh_register_name; | |
1864 | gdbarch_store_return_value_ftype *sh_store_return_value; | |
1865 | gdbarch_register_virtual_type_ftype *sh_register_virtual_type; | |
1866 | ||
1867 | /* Find a candidate among the list of pre-declared architectures. */ | |
1868 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
1869 | if (arches != NULL) | |
1870 | return arches->gdbarch; | |
1871 | ||
1872 | /* None found, create a new architecture from the information | |
1873 | provided. */ | |
1874 | tdep = XMALLOC (struct gdbarch_tdep); | |
1875 | gdbarch = gdbarch_alloc (&info, tdep); | |
1876 | ||
1877 | /* Initialize the register numbers that are not common to all the | |
1878 | variants to -1, if necessary thse will be overwritten in the case | |
1879 | statement below. */ | |
1880 | tdep->FPUL_REGNUM = -1; | |
1881 | tdep->FPSCR_REGNUM = -1; | |
c62a7c7b | 1882 | tdep->SR_REGNUM = 22; |
cc17453a | 1883 | tdep->DSR_REGNUM = -1; |
e6c42fda | 1884 | tdep->FP_LAST_REGNUM = -1; |
cc17453a EZ |
1885 | tdep->A0G_REGNUM = -1; |
1886 | tdep->A0_REGNUM = -1; | |
1887 | tdep->A1G_REGNUM = -1; | |
1888 | tdep->A1_REGNUM = -1; | |
1889 | tdep->M0_REGNUM = -1; | |
1890 | tdep->M1_REGNUM = -1; | |
1891 | tdep->X0_REGNUM = -1; | |
1892 | tdep->X1_REGNUM = -1; | |
1893 | tdep->Y0_REGNUM = -1; | |
1894 | tdep->Y1_REGNUM = -1; | |
1895 | tdep->MOD_REGNUM = -1; | |
1896 | tdep->RS_REGNUM = -1; | |
1897 | tdep->RE_REGNUM = -1; | |
1898 | tdep->SSR_REGNUM = -1; | |
1899 | tdep->SPC_REGNUM = -1; | |
53116e27 | 1900 | tdep->DR0_REGNUM = -1; |
e6c42fda | 1901 | tdep->DR_LAST_REGNUM = -1; |
53116e27 | 1902 | tdep->FV0_REGNUM = -1; |
e6c42fda | 1903 | tdep->FV_LAST_REGNUM = -1; |
a38d2a54 | 1904 | |
cc17453a | 1905 | set_gdbarch_fp0_regnum (gdbarch, -1); |
53116e27 EZ |
1906 | set_gdbarch_num_pseudo_regs (gdbarch, 0); |
1907 | set_gdbarch_max_register_raw_size (gdbarch, 4); | |
1908 | set_gdbarch_max_register_virtual_size (gdbarch, 4); | |
a38d2a54 EZ |
1909 | set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
1910 | set_gdbarch_num_regs (gdbarch, 59); | |
1911 | set_gdbarch_sp_regnum (gdbarch, 15); | |
1912 | set_gdbarch_fp_regnum (gdbarch, 14); | |
1913 | set_gdbarch_pc_regnum (gdbarch, 16); | |
1914 | set_gdbarch_register_size (gdbarch, 4); | |
1915 | set_gdbarch_register_bytes (gdbarch, NUM_REGS * 4); | |
1916 | set_gdbarch_fetch_pseudo_register (gdbarch, sh_fetch_pseudo_register); | |
1917 | set_gdbarch_store_pseudo_register (gdbarch, sh_store_pseudo_register); | |
c5f7d19c | 1918 | set_gdbarch_do_registers_info (gdbarch, sh_do_registers_info); |
eaf90c5d | 1919 | set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); |
e6c42fda | 1920 | print_sh_insn = gdb_print_insn_sh; |
cc17453a EZ |
1921 | |
1922 | switch (info.bfd_arch_info->mach) | |
8db62801 | 1923 | { |
cc17453a EZ |
1924 | case bfd_mach_sh: |
1925 | sh_register_name = sh_sh_register_name; | |
1926 | sh_show_regs = sh_generic_show_regs; | |
1927 | sh_store_return_value = sh_default_store_return_value; | |
1928 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1929 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1930 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1931 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1932 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1933 | break; |
1934 | case bfd_mach_sh2: | |
1935 | sh_register_name = sh_sh_register_name; | |
1936 | sh_show_regs = sh_generic_show_regs; | |
1937 | sh_store_return_value = sh_default_store_return_value; | |
1938 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1939 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1940 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1941 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1942 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1943 | break; |
1944 | case bfd_mach_sh_dsp: | |
1945 | sh_register_name = sh_sh_dsp_register_name; | |
1946 | sh_show_regs = sh_dsp_show_regs; | |
1947 | sh_store_return_value = sh_default_store_return_value; | |
1948 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1949 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1950 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1951 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1952 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1953 | tdep->DSR_REGNUM = 24; |
1954 | tdep->A0G_REGNUM = 25; | |
1955 | tdep->A0_REGNUM = 26; | |
1956 | tdep->A1G_REGNUM = 27; | |
1957 | tdep->A1_REGNUM = 28; | |
1958 | tdep->M0_REGNUM = 29; | |
1959 | tdep->M1_REGNUM = 30; | |
1960 | tdep->X0_REGNUM = 31; | |
1961 | tdep->X1_REGNUM = 32; | |
1962 | tdep->Y0_REGNUM = 33; | |
1963 | tdep->Y1_REGNUM = 34; | |
1964 | tdep->MOD_REGNUM = 40; | |
1965 | tdep->RS_REGNUM = 43; | |
1966 | tdep->RE_REGNUM = 44; | |
1967 | break; | |
1968 | case bfd_mach_sh3: | |
1969 | sh_register_name = sh_sh3_register_name; | |
1970 | sh_show_regs = sh3_show_regs; | |
1971 | sh_store_return_value = sh_default_store_return_value; | |
1972 | sh_register_virtual_type = sh_default_register_virtual_type; | |
1973 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
1974 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1975 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1976 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1977 | tdep->SSR_REGNUM = 41; |
1978 | tdep->SPC_REGNUM = 42; | |
1979 | break; | |
1980 | case bfd_mach_sh3e: | |
1981 | sh_register_name = sh_sh3e_register_name; | |
1982 | sh_show_regs = sh3e_show_regs; | |
1983 | sh_store_return_value = sh3e_sh4_store_return_value; | |
1984 | sh_register_virtual_type = sh_sh3e_register_virtual_type; | |
1985 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); | |
53116e27 EZ |
1986 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
1987 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
1988 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a EZ |
1989 | set_gdbarch_fp0_regnum (gdbarch, 25); |
1990 | tdep->FPUL_REGNUM = 23; | |
1991 | tdep->FPSCR_REGNUM = 24; | |
e6c42fda | 1992 | tdep->FP_LAST_REGNUM = 40; |
cc17453a EZ |
1993 | tdep->SSR_REGNUM = 41; |
1994 | tdep->SPC_REGNUM = 42; | |
1995 | break; | |
1996 | case bfd_mach_sh3_dsp: | |
1997 | sh_register_name = sh_sh3_dsp_register_name; | |
1998 | sh_show_regs = sh3_dsp_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 EZ |
2005 | tdep->DSR_REGNUM = 24; |
2006 | tdep->A0G_REGNUM = 25; | |
2007 | tdep->A0_REGNUM = 26; | |
2008 | tdep->A1G_REGNUM = 27; | |
2009 | tdep->A1_REGNUM = 28; | |
2010 | tdep->M0_REGNUM = 29; | |
2011 | tdep->M1_REGNUM = 30; | |
2012 | tdep->X0_REGNUM = 31; | |
2013 | tdep->X1_REGNUM = 32; | |
2014 | tdep->Y0_REGNUM = 33; | |
2015 | tdep->Y1_REGNUM = 34; | |
2016 | tdep->MOD_REGNUM = 40; | |
2017 | tdep->RS_REGNUM = 43; | |
2018 | tdep->RE_REGNUM = 44; | |
2019 | tdep->SSR_REGNUM = 41; | |
2020 | tdep->SPC_REGNUM = 42; | |
2021 | break; | |
2022 | case bfd_mach_sh4: | |
53116e27 EZ |
2023 | sh_register_name = sh_sh4_register_name; |
2024 | sh_show_regs = sh4_show_regs; | |
cc17453a | 2025 | sh_store_return_value = sh3e_sh4_store_return_value; |
53116e27 | 2026 | sh_register_virtual_type = sh_sh4_register_virtual_type; |
cc17453a EZ |
2027 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); |
2028 | set_gdbarch_fp0_regnum (gdbarch, 25); | |
53116e27 EZ |
2029 | set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size); |
2030 | set_gdbarch_register_virtual_size (gdbarch, sh_sh4_register_raw_size); | |
2031 | set_gdbarch_register_byte (gdbarch, sh_sh4_register_byte); | |
2032 | set_gdbarch_num_pseudo_regs (gdbarch, 12); | |
2033 | set_gdbarch_max_register_raw_size (gdbarch, 4 * 4); | |
2034 | set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4); | |
fb409745 EZ |
2035 | set_gdbarch_register_convert_to_raw (gdbarch, sh_sh4_register_convert_to_raw); |
2036 | set_gdbarch_register_convert_to_virtual (gdbarch, sh_sh4_register_convert_to_virtual); | |
2037 | set_gdbarch_register_convertible (gdbarch, sh_sh4_register_convertible); | |
cc17453a EZ |
2038 | tdep->FPUL_REGNUM = 23; |
2039 | tdep->FPSCR_REGNUM = 24; | |
e6c42fda | 2040 | tdep->FP_LAST_REGNUM = 40; |
cc17453a EZ |
2041 | tdep->SSR_REGNUM = 41; |
2042 | tdep->SPC_REGNUM = 42; | |
53116e27 | 2043 | tdep->DR0_REGNUM = 59; |
e6c42fda | 2044 | tdep->DR_LAST_REGNUM = 66; |
53116e27 | 2045 | tdep->FV0_REGNUM = 67; |
e6c42fda | 2046 | tdep->FV_LAST_REGNUM = 70; |
cc17453a EZ |
2047 | break; |
2048 | default: | |
2049 | sh_register_name = sh_generic_register_name; | |
2050 | sh_show_regs = sh_generic_show_regs; | |
2051 | sh_store_return_value = sh_default_store_return_value; | |
2052 | sh_register_virtual_type = sh_default_register_virtual_type; | |
2053 | set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); | |
53116e27 EZ |
2054 | set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); |
2055 | set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); | |
2056 | set_gdbarch_register_byte (gdbarch, sh_default_register_byte); | |
cc17453a | 2057 | break; |
8db62801 | 2058 | } |
cc17453a EZ |
2059 | |
2060 | set_gdbarch_read_pc (gdbarch, generic_target_read_pc); | |
2061 | set_gdbarch_write_pc (gdbarch, generic_target_write_pc); | |
2062 | set_gdbarch_read_fp (gdbarch, generic_target_read_fp); | |
2063 | set_gdbarch_write_fp (gdbarch, generic_target_write_fp); | |
2064 | set_gdbarch_read_sp (gdbarch, generic_target_read_sp); | |
2065 | set_gdbarch_write_sp (gdbarch, generic_target_write_sp); | |
2066 | ||
cc17453a | 2067 | set_gdbarch_register_name (gdbarch, sh_register_name); |
cc17453a EZ |
2068 | set_gdbarch_register_virtual_type (gdbarch, sh_register_virtual_type); |
2069 | ||
cc17453a EZ |
2070 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
2071 | set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2072 | set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2073 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
2074 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); | |
2075 | set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); | |
a38d2a54 | 2076 | set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);/*??should be 8?*/ |
cc17453a EZ |
2077 | |
2078 | set_gdbarch_use_generic_dummy_frames (gdbarch, 1); | |
2079 | set_gdbarch_call_dummy_length (gdbarch, 0); | |
2080 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); | |
2081 | set_gdbarch_call_dummy_address (gdbarch, entry_point_address); | |
2082 | set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); /*???*/ | |
2083 | set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); | |
2084 | set_gdbarch_call_dummy_start_offset (gdbarch, 0); | |
2085 | set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy); | |
2086 | set_gdbarch_call_dummy_words (gdbarch, sh_call_dummy_words); | |
2087 | set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words)); | |
2088 | set_gdbarch_call_dummy_p (gdbarch, 1); | |
2089 | set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); | |
2090 | set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); | |
2091 | set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); | |
2092 | set_gdbarch_coerce_float_to_double (gdbarch, | |
2093 | sh_coerce_float_to_double); | |
2094 | ||
2095 | set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value); | |
2096 | set_gdbarch_push_arguments (gdbarch, sh_push_arguments); | |
2097 | set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); | |
2098 | set_gdbarch_push_return_address (gdbarch, sh_push_return_address); | |
2099 | ||
2100 | set_gdbarch_store_struct_return (gdbarch, sh_store_struct_return); | |
2101 | set_gdbarch_store_return_value (gdbarch, sh_store_return_value); | |
2102 | set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address); | |
2103 | set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention); | |
2104 | set_gdbarch_init_extra_frame_info (gdbarch, sh_init_extra_frame_info); | |
2105 | set_gdbarch_pop_frame (gdbarch, sh_pop_frame); | |
2106 | set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue); | |
2107 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
2108 | set_gdbarch_decr_pc_after_break (gdbarch, 0); | |
2109 | set_gdbarch_function_start_offset (gdbarch, 0); | |
cc17453a EZ |
2110 | |
2111 | set_gdbarch_frame_args_skip (gdbarch, 0); | |
2112 | set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); | |
2113 | set_gdbarch_frame_chain (gdbarch, sh_frame_chain); | |
2114 | set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); | |
2115 | set_gdbarch_frame_saved_pc (gdbarch, sh_frame_saved_pc); | |
c347ee3e MS |
2116 | set_gdbarch_frame_args_address (gdbarch, default_frame_address); |
2117 | set_gdbarch_frame_locals_address (gdbarch, default_frame_address); | |
cc17453a EZ |
2118 | set_gdbarch_saved_pc_after_call (gdbarch, sh_saved_pc_after_call); |
2119 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); | |
2120 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); | |
2121 | set_gdbarch_ieee_float (gdbarch, 1); | |
a38d2a54 | 2122 | tm_print_insn = print_sh_insn; |
cc17453a EZ |
2123 | |
2124 | return gdbarch; | |
8db62801 EZ |
2125 | } |
2126 | ||
c906108c | 2127 | void |
fba45db2 | 2128 | _initialize_sh_tdep (void) |
c906108c SS |
2129 | { |
2130 | struct cmd_list_element *c; | |
cc17453a EZ |
2131 | |
2132 | register_gdbarch_init (bfd_arch_sh, sh_gdbarch_init); | |
c906108c | 2133 | |
53116e27 | 2134 | add_com ("regs", class_vars, sh_show_regs_command, "Print all registers"); |
c906108c | 2135 | } |