| 1 | /* Target-dependent code for Renesas Super-H, for GDB. |
| 2 | |
| 3 | Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
| 4 | 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | /* |
| 22 | Contributed by Steve Chamberlain |
| 23 | sac@cygnus.com |
| 24 | */ |
| 25 | |
| 26 | #include "defs.h" |
| 27 | #include "frame.h" |
| 28 | #include "frame-base.h" |
| 29 | #include "frame-unwind.h" |
| 30 | #include "dwarf2-frame.h" |
| 31 | #include "symtab.h" |
| 32 | #include "gdbtypes.h" |
| 33 | #include "gdbcmd.h" |
| 34 | #include "gdbcore.h" |
| 35 | #include "value.h" |
| 36 | #include "dis-asm.h" |
| 37 | #include "inferior.h" |
| 38 | #include "gdb_string.h" |
| 39 | #include "gdb_assert.h" |
| 40 | #include "arch-utils.h" |
| 41 | #include "floatformat.h" |
| 42 | #include "regcache.h" |
| 43 | #include "doublest.h" |
| 44 | #include "osabi.h" |
| 45 | #include "reggroups.h" |
| 46 | |
| 47 | #include "sh-tdep.h" |
| 48 | |
| 49 | #include "elf-bfd.h" |
| 50 | #include "solib-svr4.h" |
| 51 | |
| 52 | /* sh flags */ |
| 53 | #include "elf/sh.h" |
| 54 | #include "elf/dwarf2.h" |
| 55 | /* registers numbers shared with the simulator */ |
| 56 | #include "gdb/sim-sh.h" |
| 57 | |
| 58 | /* List of "set sh ..." and "show sh ..." commands. */ |
| 59 | static struct cmd_list_element *setshcmdlist = NULL; |
| 60 | static struct cmd_list_element *showshcmdlist = NULL; |
| 61 | |
| 62 | static const char sh_cc_gcc[] = "gcc"; |
| 63 | static const char sh_cc_renesas[] = "renesas"; |
| 64 | static const char *sh_cc_enum[] = { |
| 65 | sh_cc_gcc, |
| 66 | sh_cc_renesas, |
| 67 | NULL |
| 68 | }; |
| 69 | |
| 70 | static const char *sh_active_calling_convention = sh_cc_gcc; |
| 71 | |
| 72 | static void (*sh_show_regs) (struct frame_info *); |
| 73 | |
| 74 | #define SH_NUM_REGS 67 |
| 75 | |
| 76 | struct sh_frame_cache |
| 77 | { |
| 78 | /* Base address. */ |
| 79 | CORE_ADDR base; |
| 80 | LONGEST sp_offset; |
| 81 | CORE_ADDR pc; |
| 82 | |
| 83 | /* Flag showing that a frame has been created in the prologue code. */ |
| 84 | int uses_fp; |
| 85 | |
| 86 | /* Saved registers. */ |
| 87 | CORE_ADDR saved_regs[SH_NUM_REGS]; |
| 88 | CORE_ADDR saved_sp; |
| 89 | }; |
| 90 | |
| 91 | static int |
| 92 | sh_is_renesas_calling_convention (struct type *func_type) |
| 93 | { |
| 94 | return ((func_type |
| 95 | && TYPE_CALLING_CONVENTION (func_type) == DW_CC_GNU_renesas_sh) |
| 96 | || sh_active_calling_convention == sh_cc_renesas); |
| 97 | } |
| 98 | |
| 99 | static const char * |
| 100 | sh_sh_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 101 | { |
| 102 | static char *register_names[] = { |
| 103 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 104 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 105 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 106 | "", "", |
| 107 | "", "", "", "", "", "", "", "", |
| 108 | "", "", "", "", "", "", "", "", |
| 109 | "", "", |
| 110 | "", "", "", "", "", "", "", "", |
| 111 | "", "", "", "", "", "", "", "", |
| 112 | "", "", "", "", "", "", "", "", |
| 113 | }; |
| 114 | if (reg_nr < 0) |
| 115 | return NULL; |
| 116 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 117 | return NULL; |
| 118 | return register_names[reg_nr]; |
| 119 | } |
| 120 | |
| 121 | static const char * |
| 122 | sh_sh3_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 123 | { |
| 124 | static char *register_names[] = { |
| 125 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 126 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 127 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 128 | "", "", |
| 129 | "", "", "", "", "", "", "", "", |
| 130 | "", "", "", "", "", "", "", "", |
| 131 | "ssr", "spc", |
| 132 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", |
| 133 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1" |
| 134 | "", "", "", "", "", "", "", "", |
| 135 | }; |
| 136 | if (reg_nr < 0) |
| 137 | return NULL; |
| 138 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 139 | return NULL; |
| 140 | return register_names[reg_nr]; |
| 141 | } |
| 142 | |
| 143 | static const char * |
| 144 | sh_sh3e_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 145 | { |
| 146 | static char *register_names[] = { |
| 147 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 148 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 149 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 150 | "fpul", "fpscr", |
| 151 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 152 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 153 | "ssr", "spc", |
| 154 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", |
| 155 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", |
| 156 | "", "", "", "", "", "", "", "", |
| 157 | }; |
| 158 | if (reg_nr < 0) |
| 159 | return NULL; |
| 160 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 161 | return NULL; |
| 162 | return register_names[reg_nr]; |
| 163 | } |
| 164 | |
| 165 | static const char * |
| 166 | sh_sh2e_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 167 | { |
| 168 | static char *register_names[] = { |
| 169 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 170 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 171 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 172 | "fpul", "fpscr", |
| 173 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 174 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 175 | "", "", |
| 176 | "", "", "", "", "", "", "", "", |
| 177 | "", "", "", "", "", "", "", "", |
| 178 | "", "", "", "", "", "", "", "", |
| 179 | }; |
| 180 | if (reg_nr < 0) |
| 181 | return NULL; |
| 182 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 183 | return NULL; |
| 184 | return register_names[reg_nr]; |
| 185 | } |
| 186 | |
| 187 | static const char * |
| 188 | sh_sh2a_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 189 | { |
| 190 | static char *register_names[] = { |
| 191 | /* general registers 0-15 */ |
| 192 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 193 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 194 | /* 16 - 22 */ |
| 195 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 196 | /* 23, 24 */ |
| 197 | "fpul", "fpscr", |
| 198 | /* floating point registers 25 - 40 */ |
| 199 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 200 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 201 | /* 41, 42 */ |
| 202 | "", "", |
| 203 | /* 43 - 62. Banked registers. The bank number used is determined by |
| 204 | the bank register (63). */ |
| 205 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b", |
| 206 | "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b", |
| 207 | "machb", "ivnb", "prb", "gbrb", "maclb", |
| 208 | /* 63: register bank number, not a real register but used to |
| 209 | communicate the register bank currently get/set. This register |
| 210 | is hidden to the user, who manipulates it using the pseudo |
| 211 | register called "bank" (67). See below. */ |
| 212 | "", |
| 213 | /* 64 - 66 */ |
| 214 | "ibcr", "ibnr", "tbr", |
| 215 | /* 67: register bank number, the user visible pseudo register. */ |
| 216 | "bank", |
| 217 | /* double precision (pseudo) 68 - 75 */ |
| 218 | "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", |
| 219 | }; |
| 220 | if (reg_nr < 0) |
| 221 | return NULL; |
| 222 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 223 | return NULL; |
| 224 | return register_names[reg_nr]; |
| 225 | } |
| 226 | |
| 227 | static const char * |
| 228 | sh_sh2a_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 229 | { |
| 230 | static char *register_names[] = { |
| 231 | /* general registers 0-15 */ |
| 232 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 233 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 234 | /* 16 - 22 */ |
| 235 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 236 | /* 23, 24 */ |
| 237 | "", "", |
| 238 | /* floating point registers 25 - 40 */ |
| 239 | "", "", "", "", "", "", "", "", |
| 240 | "", "", "", "", "", "", "", "", |
| 241 | /* 41, 42 */ |
| 242 | "", "", |
| 243 | /* 43 - 62. Banked registers. The bank number used is determined by |
| 244 | the bank register (63). */ |
| 245 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b", |
| 246 | "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b", |
| 247 | "machb", "ivnb", "prb", "gbrb", "maclb", |
| 248 | /* 63: register bank number, not a real register but used to |
| 249 | communicate the register bank currently get/set. This register |
| 250 | is hidden to the user, who manipulates it using the pseudo |
| 251 | register called "bank" (67). See below. */ |
| 252 | "", |
| 253 | /* 64 - 66 */ |
| 254 | "ibcr", "ibnr", "tbr", |
| 255 | /* 67: register bank number, the user visible pseudo register. */ |
| 256 | "bank", |
| 257 | /* double precision (pseudo) 68 - 75 */ |
| 258 | "", "", "", "", "", "", "", "", |
| 259 | }; |
| 260 | if (reg_nr < 0) |
| 261 | return NULL; |
| 262 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 263 | return NULL; |
| 264 | return register_names[reg_nr]; |
| 265 | } |
| 266 | |
| 267 | static const char * |
| 268 | sh_sh_dsp_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 269 | { |
| 270 | static char *register_names[] = { |
| 271 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 272 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 273 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 274 | "", "dsr", |
| 275 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", |
| 276 | "y0", "y1", "", "", "", "", "", "mod", |
| 277 | "", "", |
| 278 | "rs", "re", "", "", "", "", "", "", |
| 279 | "", "", "", "", "", "", "", "", |
| 280 | "", "", "", "", "", "", "", "", |
| 281 | }; |
| 282 | if (reg_nr < 0) |
| 283 | return NULL; |
| 284 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 285 | return NULL; |
| 286 | return register_names[reg_nr]; |
| 287 | } |
| 288 | |
| 289 | static const char * |
| 290 | sh_sh3_dsp_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 291 | { |
| 292 | static char *register_names[] = { |
| 293 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 294 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 295 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 296 | "", "dsr", |
| 297 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", |
| 298 | "y0", "y1", "", "", "", "", "", "mod", |
| 299 | "ssr", "spc", |
| 300 | "rs", "re", "", "", "", "", "", "", |
| 301 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b", |
| 302 | "", "", "", "", "", "", "", "", |
| 303 | "", "", "", "", "", "", "", "", |
| 304 | }; |
| 305 | if (reg_nr < 0) |
| 306 | return NULL; |
| 307 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 308 | return NULL; |
| 309 | return register_names[reg_nr]; |
| 310 | } |
| 311 | |
| 312 | static const char * |
| 313 | sh_sh4_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 314 | { |
| 315 | static char *register_names[] = { |
| 316 | /* general registers 0-15 */ |
| 317 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 318 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 319 | /* 16 - 22 */ |
| 320 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 321 | /* 23, 24 */ |
| 322 | "fpul", "fpscr", |
| 323 | /* floating point registers 25 - 40 */ |
| 324 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 325 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 326 | /* 41, 42 */ |
| 327 | "ssr", "spc", |
| 328 | /* bank 0 43 - 50 */ |
| 329 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", |
| 330 | /* bank 1 51 - 58 */ |
| 331 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", |
| 332 | "", "", "", "", "", "", "", "", |
| 333 | /* pseudo bank register. */ |
| 334 | "", |
| 335 | /* double precision (pseudo) 59 - 66 */ |
| 336 | "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", |
| 337 | /* vectors (pseudo) 67 - 70 */ |
| 338 | "fv0", "fv4", "fv8", "fv12", |
| 339 | /* FIXME: missing XF 71 - 86 */ |
| 340 | /* FIXME: missing XD 87 - 94 */ |
| 341 | }; |
| 342 | if (reg_nr < 0) |
| 343 | return NULL; |
| 344 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 345 | return NULL; |
| 346 | return register_names[reg_nr]; |
| 347 | } |
| 348 | |
| 349 | static const char * |
| 350 | sh_sh4_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 351 | { |
| 352 | static char *register_names[] = { |
| 353 | /* general registers 0-15 */ |
| 354 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 355 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 356 | /* 16 - 22 */ |
| 357 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 358 | /* 23, 24 */ |
| 359 | "", "", |
| 360 | /* floating point registers 25 - 40 -- not for nofpu target */ |
| 361 | "", "", "", "", "", "", "", "", |
| 362 | "", "", "", "", "", "", "", "", |
| 363 | /* 41, 42 */ |
| 364 | "ssr", "spc", |
| 365 | /* bank 0 43 - 50 */ |
| 366 | "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", |
| 367 | /* bank 1 51 - 58 */ |
| 368 | "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", |
| 369 | "", "", "", "", "", "", "", "", |
| 370 | /* pseudo bank register. */ |
| 371 | "", |
| 372 | /* double precision (pseudo) 59 - 66 -- not for nofpu target */ |
| 373 | "", "", "", "", "", "", "", "", |
| 374 | /* vectors (pseudo) 67 - 70 -- not for nofpu target */ |
| 375 | "", "", "", "", |
| 376 | }; |
| 377 | if (reg_nr < 0) |
| 378 | return NULL; |
| 379 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 380 | return NULL; |
| 381 | return register_names[reg_nr]; |
| 382 | } |
| 383 | |
| 384 | static const char * |
| 385 | sh_sh4al_dsp_register_name (struct gdbarch *gdbarch, int reg_nr) |
| 386 | { |
| 387 | static char *register_names[] = { |
| 388 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 389 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 390 | "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", |
| 391 | "", "dsr", |
| 392 | "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", |
| 393 | "y0", "y1", "", "", "", "", "", "mod", |
| 394 | "ssr", "spc", |
| 395 | "rs", "re", "", "", "", "", "", "", |
| 396 | "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b", |
| 397 | "", "", "", "", "", "", "", "", |
| 398 | "", "", "", "", "", "", "", "", |
| 399 | }; |
| 400 | if (reg_nr < 0) |
| 401 | return NULL; |
| 402 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 403 | return NULL; |
| 404 | return register_names[reg_nr]; |
| 405 | } |
| 406 | |
| 407 | static const unsigned char * |
| 408 | sh_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr) |
| 409 | { |
| 410 | /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */ |
| 411 | static unsigned char breakpoint[] = { 0xc3, 0xc3 }; |
| 412 | |
| 413 | /* For remote stub targets, trapa #20 is used. */ |
| 414 | if (strcmp (target_shortname, "remote") == 0) |
| 415 | { |
| 416 | static unsigned char big_remote_breakpoint[] = { 0xc3, 0x20 }; |
| 417 | static unsigned char little_remote_breakpoint[] = { 0x20, 0xc3 }; |
| 418 | |
| 419 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 420 | { |
| 421 | *lenptr = sizeof (big_remote_breakpoint); |
| 422 | return big_remote_breakpoint; |
| 423 | } |
| 424 | else |
| 425 | { |
| 426 | *lenptr = sizeof (little_remote_breakpoint); |
| 427 | return little_remote_breakpoint; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | *lenptr = sizeof (breakpoint); |
| 432 | return breakpoint; |
| 433 | } |
| 434 | |
| 435 | /* Prologue looks like |
| 436 | mov.l r14,@-r15 |
| 437 | sts.l pr,@-r15 |
| 438 | mov.l <regs>,@-r15 |
| 439 | sub <room_for_loca_vars>,r15 |
| 440 | mov r15,r14 |
| 441 | |
| 442 | Actually it can be more complicated than this but that's it, basically. |
| 443 | */ |
| 444 | |
| 445 | #define GET_SOURCE_REG(x) (((x) >> 4) & 0xf) |
| 446 | #define GET_TARGET_REG(x) (((x) >> 8) & 0xf) |
| 447 | |
| 448 | /* JSR @Rm 0100mmmm00001011 */ |
| 449 | #define IS_JSR(x) (((x) & 0xf0ff) == 0x400b) |
| 450 | |
| 451 | /* STS.L PR,@-r15 0100111100100010 |
| 452 | r15-4-->r15, PR-->(r15) */ |
| 453 | #define IS_STS(x) ((x) == 0x4f22) |
| 454 | |
| 455 | /* STS.L MACL,@-r15 0100111100010010 |
| 456 | r15-4-->r15, MACL-->(r15) */ |
| 457 | #define IS_MACL_STS(x) ((x) == 0x4f12) |
| 458 | |
| 459 | /* MOV.L Rm,@-r15 00101111mmmm0110 |
| 460 | r15-4-->r15, Rm-->(R15) */ |
| 461 | #define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) |
| 462 | |
| 463 | /* MOV r15,r14 0110111011110011 |
| 464 | r15-->r14 */ |
| 465 | #define IS_MOV_SP_FP(x) ((x) == 0x6ef3) |
| 466 | |
| 467 | /* ADD #imm,r15 01111111iiiiiiii |
| 468 | r15+imm-->r15 */ |
| 469 | #define IS_ADD_IMM_SP(x) (((x) & 0xff00) == 0x7f00) |
| 470 | |
| 471 | #define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00) |
| 472 | #define IS_SHLL_R3(x) ((x) == 0x4300) |
| 473 | |
| 474 | /* ADD r3,r15 0011111100111100 |
| 475 | r15+r3-->r15 */ |
| 476 | #define IS_ADD_R3SP(x) ((x) == 0x3f3c) |
| 477 | |
| 478 | /* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011 |
| 479 | FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011 |
| 480 | FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */ |
| 481 | /* CV, 2003-08-28: Only suitable with Rn == SP, therefore name changed to |
| 482 | make this entirely clear. */ |
| 483 | /* #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) */ |
| 484 | #define IS_FPUSH(x) (((x) & 0xff0f) == 0xff0b) |
| 485 | |
| 486 | /* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 4 <= m <= 7 */ |
| 487 | #define IS_MOV_ARG_TO_REG(x) \ |
| 488 | (((x) & 0xf00f) == 0x6003 && \ |
| 489 | ((x) & 0x00f0) >= 0x0040 && \ |
| 490 | ((x) & 0x00f0) <= 0x0070) |
| 491 | /* MOV.L Rm,@Rn 0010nnnnmmmm0010 n = 14, 4 <= m <= 7 */ |
| 492 | #define IS_MOV_ARG_TO_IND_R14(x) \ |
| 493 | (((x) & 0xff0f) == 0x2e02 && \ |
| 494 | ((x) & 0x00f0) >= 0x0040 && \ |
| 495 | ((x) & 0x00f0) <= 0x0070) |
| 496 | /* MOV.L Rm,@(disp*4,Rn) 00011110mmmmdddd n = 14, 4 <= m <= 7 */ |
| 497 | #define IS_MOV_ARG_TO_IND_R14_WITH_DISP(x) \ |
| 498 | (((x) & 0xff00) == 0x1e00 && \ |
| 499 | ((x) & 0x00f0) >= 0x0040 && \ |
| 500 | ((x) & 0x00f0) <= 0x0070) |
| 501 | |
| 502 | /* MOV.W @(disp*2,PC),Rn 1001nnnndddddddd */ |
| 503 | #define IS_MOVW_PCREL_TO_REG(x) (((x) & 0xf000) == 0x9000) |
| 504 | /* MOV.L @(disp*4,PC),Rn 1101nnnndddddddd */ |
| 505 | #define IS_MOVL_PCREL_TO_REG(x) (((x) & 0xf000) == 0xd000) |
| 506 | /* MOVI20 #imm20,Rn 0000nnnniiii0000 */ |
| 507 | #define IS_MOVI20(x) (((x) & 0xf00f) == 0x0000) |
| 508 | /* SUB Rn,R15 00111111nnnn1000 */ |
| 509 | #define IS_SUB_REG_FROM_SP(x) (((x) & 0xff0f) == 0x3f08) |
| 510 | |
| 511 | #define FPSCR_SZ (1 << 20) |
| 512 | |
| 513 | /* The following instructions are used for epilogue testing. */ |
| 514 | #define IS_RESTORE_FP(x) ((x) == 0x6ef6) |
| 515 | #define IS_RTS(x) ((x) == 0x000b) |
| 516 | #define IS_LDS(x) ((x) == 0x4f26) |
| 517 | #define IS_MACL_LDS(x) ((x) == 0x4f16) |
| 518 | #define IS_MOV_FP_SP(x) ((x) == 0x6fe3) |
| 519 | #define IS_ADD_REG_TO_FP(x) (((x) & 0xff0f) == 0x3e0c) |
| 520 | #define IS_ADD_IMM_FP(x) (((x) & 0xff00) == 0x7e00) |
| 521 | |
| 522 | /* Disassemble an instruction. */ |
| 523 | static int |
| 524 | gdb_print_insn_sh (bfd_vma memaddr, disassemble_info * info) |
| 525 | { |
| 526 | info->endian = gdbarch_byte_order (current_gdbarch); |
| 527 | return print_insn_sh (memaddr, info); |
| 528 | } |
| 529 | |
| 530 | static CORE_ADDR |
| 531 | sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc, |
| 532 | struct sh_frame_cache *cache, ULONGEST fpscr) |
| 533 | { |
| 534 | ULONGEST inst; |
| 535 | CORE_ADDR opc; |
| 536 | int offset; |
| 537 | int sav_offset = 0; |
| 538 | int r3_val = 0; |
| 539 | int reg, sav_reg = -1; |
| 540 | |
| 541 | if (pc >= current_pc) |
| 542 | return current_pc; |
| 543 | |
| 544 | cache->uses_fp = 0; |
| 545 | for (opc = pc + (2 * 28); pc < opc; pc += 2) |
| 546 | { |
| 547 | inst = read_memory_unsigned_integer (pc, 2); |
| 548 | /* See where the registers will be saved to */ |
| 549 | if (IS_PUSH (inst)) |
| 550 | { |
| 551 | cache->saved_regs[GET_SOURCE_REG (inst)] = cache->sp_offset; |
| 552 | cache->sp_offset += 4; |
| 553 | } |
| 554 | else if (IS_STS (inst)) |
| 555 | { |
| 556 | cache->saved_regs[PR_REGNUM] = cache->sp_offset; |
| 557 | cache->sp_offset += 4; |
| 558 | } |
| 559 | else if (IS_MACL_STS (inst)) |
| 560 | { |
| 561 | cache->saved_regs[MACL_REGNUM] = cache->sp_offset; |
| 562 | cache->sp_offset += 4; |
| 563 | } |
| 564 | else if (IS_MOV_R3 (inst)) |
| 565 | { |
| 566 | r3_val = ((inst & 0xff) ^ 0x80) - 0x80; |
| 567 | } |
| 568 | else if (IS_SHLL_R3 (inst)) |
| 569 | { |
| 570 | r3_val <<= 1; |
| 571 | } |
| 572 | else if (IS_ADD_R3SP (inst)) |
| 573 | { |
| 574 | cache->sp_offset += -r3_val; |
| 575 | } |
| 576 | else if (IS_ADD_IMM_SP (inst)) |
| 577 | { |
| 578 | offset = ((inst & 0xff) ^ 0x80) - 0x80; |
| 579 | cache->sp_offset -= offset; |
| 580 | } |
| 581 | else if (IS_MOVW_PCREL_TO_REG (inst)) |
| 582 | { |
| 583 | if (sav_reg < 0) |
| 584 | { |
| 585 | reg = GET_TARGET_REG (inst); |
| 586 | if (reg < 14) |
| 587 | { |
| 588 | sav_reg = reg; |
| 589 | offset = (inst & 0xff) << 1; |
| 590 | sav_offset = |
| 591 | read_memory_integer ((pc + 4) + offset, 2); |
| 592 | } |
| 593 | } |
| 594 | } |
| 595 | else if (IS_MOVL_PCREL_TO_REG (inst)) |
| 596 | { |
| 597 | if (sav_reg < 0) |
| 598 | { |
| 599 | reg = GET_TARGET_REG (inst); |
| 600 | if (reg < 14) |
| 601 | { |
| 602 | sav_reg = reg; |
| 603 | offset = (inst & 0xff) << 2; |
| 604 | sav_offset = |
| 605 | read_memory_integer (((pc & 0xfffffffc) + 4) + offset, 4); |
| 606 | } |
| 607 | } |
| 608 | } |
| 609 | else if (IS_MOVI20 (inst)) |
| 610 | { |
| 611 | if (sav_reg < 0) |
| 612 | { |
| 613 | reg = GET_TARGET_REG (inst); |
| 614 | if (reg < 14) |
| 615 | { |
| 616 | sav_reg = reg; |
| 617 | sav_offset = GET_SOURCE_REG (inst) << 16; |
| 618 | /* MOVI20 is a 32 bit instruction! */ |
| 619 | pc += 2; |
| 620 | sav_offset |= read_memory_unsigned_integer (pc, 2); |
| 621 | /* Now sav_offset contains an unsigned 20 bit value. |
| 622 | It must still get sign extended. */ |
| 623 | if (sav_offset & 0x00080000) |
| 624 | sav_offset |= 0xfff00000; |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | else if (IS_SUB_REG_FROM_SP (inst)) |
| 629 | { |
| 630 | reg = GET_SOURCE_REG (inst); |
| 631 | if (sav_reg > 0 && reg == sav_reg) |
| 632 | { |
| 633 | sav_reg = -1; |
| 634 | } |
| 635 | cache->sp_offset += sav_offset; |
| 636 | } |
| 637 | else if (IS_FPUSH (inst)) |
| 638 | { |
| 639 | if (fpscr & FPSCR_SZ) |
| 640 | { |
| 641 | cache->sp_offset += 8; |
| 642 | } |
| 643 | else |
| 644 | { |
| 645 | cache->sp_offset += 4; |
| 646 | } |
| 647 | } |
| 648 | else if (IS_MOV_SP_FP (inst)) |
| 649 | { |
| 650 | cache->uses_fp = 1; |
| 651 | /* At this point, only allow argument register moves to other |
| 652 | registers or argument register moves to @(X,fp) which are |
| 653 | moving the register arguments onto the stack area allocated |
| 654 | by a former add somenumber to SP call. Don't allow moving |
| 655 | to an fp indirect address above fp + cache->sp_offset. */ |
| 656 | pc += 2; |
| 657 | for (opc = pc + 12; pc < opc; pc += 2) |
| 658 | { |
| 659 | inst = read_memory_integer (pc, 2); |
| 660 | if (IS_MOV_ARG_TO_IND_R14 (inst)) |
| 661 | { |
| 662 | reg = GET_SOURCE_REG (inst); |
| 663 | if (cache->sp_offset > 0) |
| 664 | cache->saved_regs[reg] = cache->sp_offset; |
| 665 | } |
| 666 | else if (IS_MOV_ARG_TO_IND_R14_WITH_DISP (inst)) |
| 667 | { |
| 668 | reg = GET_SOURCE_REG (inst); |
| 669 | offset = (inst & 0xf) * 4; |
| 670 | if (cache->sp_offset > offset) |
| 671 | cache->saved_regs[reg] = cache->sp_offset - offset; |
| 672 | } |
| 673 | else if (IS_MOV_ARG_TO_REG (inst)) |
| 674 | continue; |
| 675 | else |
| 676 | break; |
| 677 | } |
| 678 | break; |
| 679 | } |
| 680 | else if (IS_JSR (inst)) |
| 681 | { |
| 682 | /* We have found a jsr that has been scheduled into the prologue. |
| 683 | If we continue the scan and return a pc someplace after this, |
| 684 | then setting a breakpoint on this function will cause it to |
| 685 | appear to be called after the function it is calling via the |
| 686 | jsr, which will be very confusing. Most likely the next |
| 687 | instruction is going to be IS_MOV_SP_FP in the delay slot. If |
| 688 | so, note that before returning the current pc. */ |
| 689 | inst = read_memory_integer (pc + 2, 2); |
| 690 | if (IS_MOV_SP_FP (inst)) |
| 691 | cache->uses_fp = 1; |
| 692 | break; |
| 693 | } |
| 694 | #if 0 /* This used to just stop when it found an instruction that |
| 695 | was not considered part of the prologue. Now, we just |
| 696 | keep going looking for likely instructions. */ |
| 697 | else |
| 698 | break; |
| 699 | #endif |
| 700 | } |
| 701 | |
| 702 | return pc; |
| 703 | } |
| 704 | |
| 705 | /* Skip any prologue before the guts of a function */ |
| 706 | |
| 707 | /* Skip the prologue using the debug information. If this fails we'll |
| 708 | fall back on the 'guess' method below. */ |
| 709 | static CORE_ADDR |
| 710 | after_prologue (CORE_ADDR pc) |
| 711 | { |
| 712 | struct symtab_and_line sal; |
| 713 | CORE_ADDR func_addr, func_end; |
| 714 | |
| 715 | /* If we can not find the symbol in the partial symbol table, then |
| 716 | there is no hope we can determine the function's start address |
| 717 | with this code. */ |
| 718 | if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) |
| 719 | return 0; |
| 720 | |
| 721 | /* Get the line associated with FUNC_ADDR. */ |
| 722 | sal = find_pc_line (func_addr, 0); |
| 723 | |
| 724 | /* There are only two cases to consider. First, the end of the source line |
| 725 | is within the function bounds. In that case we return the end of the |
| 726 | source line. Second is the end of the source line extends beyond the |
| 727 | bounds of the current function. We need to use the slow code to |
| 728 | examine instructions in that case. */ |
| 729 | if (sal.end < func_end) |
| 730 | return sal.end; |
| 731 | else |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | static CORE_ADDR |
| 736 | sh_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc) |
| 737 | { |
| 738 | CORE_ADDR pc; |
| 739 | struct sh_frame_cache cache; |
| 740 | |
| 741 | /* See if we can determine the end of the prologue via the symbol table. |
| 742 | If so, then return either PC, or the PC after the prologue, whichever |
| 743 | is greater. */ |
| 744 | pc = after_prologue (start_pc); |
| 745 | |
| 746 | /* If after_prologue returned a useful address, then use it. Else |
| 747 | fall back on the instruction skipping code. */ |
| 748 | if (pc) |
| 749 | return max (pc, start_pc); |
| 750 | |
| 751 | cache.sp_offset = -4; |
| 752 | pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache, 0); |
| 753 | if (!cache.uses_fp) |
| 754 | return start_pc; |
| 755 | |
| 756 | return pc; |
| 757 | } |
| 758 | |
| 759 | /* The ABI says: |
| 760 | |
| 761 | Aggregate types not bigger than 8 bytes that have the same size and |
| 762 | alignment as one of the integer scalar types are returned in the |
| 763 | same registers as the integer type they match. |
| 764 | |
| 765 | For example, a 2-byte aligned structure with size 2 bytes has the |
| 766 | same size and alignment as a short int, and will be returned in R0. |
| 767 | A 4-byte aligned structure with size 8 bytes has the same size and |
| 768 | alignment as a long long int, and will be returned in R0 and R1. |
| 769 | |
| 770 | When an aggregate type is returned in R0 and R1, R0 contains the |
| 771 | first four bytes of the aggregate, and R1 contains the |
| 772 | remainder. If the size of the aggregate type is not a multiple of 4 |
| 773 | bytes, the aggregate is tail-padded up to a multiple of 4 |
| 774 | bytes. The value of the padding is undefined. For little-endian |
| 775 | targets the padding will appear at the most significant end of the |
| 776 | last element, for big-endian targets the padding appears at the |
| 777 | least significant end of the last element. |
| 778 | |
| 779 | All other aggregate types are returned by address. The caller |
| 780 | function passes the address of an area large enough to hold the |
| 781 | aggregate value in R2. The called function stores the result in |
| 782 | this location. |
| 783 | |
| 784 | To reiterate, structs smaller than 8 bytes could also be returned |
| 785 | in memory, if they don't pass the "same size and alignment as an |
| 786 | integer type" rule. |
| 787 | |
| 788 | For example, in |
| 789 | |
| 790 | struct s { char c[3]; } wibble; |
| 791 | struct s foo(void) { return wibble; } |
| 792 | |
| 793 | the return value from foo() will be in memory, not |
| 794 | in R0, because there is no 3-byte integer type. |
| 795 | |
| 796 | Similarly, in |
| 797 | |
| 798 | struct s { char c[2]; } wibble; |
| 799 | struct s foo(void) { return wibble; } |
| 800 | |
| 801 | because a struct containing two chars has alignment 1, that matches |
| 802 | type char, but size 2, that matches type short. There's no integer |
| 803 | type that has alignment 1 and size 2, so the struct is returned in |
| 804 | memory. |
| 805 | |
| 806 | */ |
| 807 | |
| 808 | static int |
| 809 | sh_use_struct_convention (int renesas_abi, struct type *type) |
| 810 | { |
| 811 | int len = TYPE_LENGTH (type); |
| 812 | int nelem = TYPE_NFIELDS (type); |
| 813 | |
| 814 | /* The Renesas ABI returns aggregate types always on stack. */ |
| 815 | if (renesas_abi && (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 816 | || TYPE_CODE (type) == TYPE_CODE_UNION)) |
| 817 | return 1; |
| 818 | |
| 819 | /* Non-power of 2 length types and types bigger than 8 bytes (which don't |
| 820 | fit in two registers anyway) use struct convention. */ |
| 821 | if (len != 1 && len != 2 && len != 4 && len != 8) |
| 822 | return 1; |
| 823 | |
| 824 | /* Scalar types and aggregate types with exactly one field are aligned |
| 825 | by definition. They are returned in registers. */ |
| 826 | if (nelem <= 1) |
| 827 | return 0; |
| 828 | |
| 829 | /* If the first field in the aggregate has the same length as the entire |
| 830 | aggregate type, the type is returned in registers. */ |
| 831 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == len) |
| 832 | return 0; |
| 833 | |
| 834 | /* If the size of the aggregate is 8 bytes and the first field is |
| 835 | of size 4 bytes its alignment is equal to long long's alignment, |
| 836 | so it's returned in registers. */ |
| 837 | if (len == 8 && TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4) |
| 838 | return 0; |
| 839 | |
| 840 | /* Otherwise use struct convention. */ |
| 841 | return 1; |
| 842 | } |
| 843 | |
| 844 | static int |
| 845 | sh_use_struct_convention_nofpu (int renesas_abi, struct type *type) |
| 846 | { |
| 847 | /* The Renesas ABI returns long longs/doubles etc. always on stack. */ |
| 848 | if (renesas_abi && TYPE_NFIELDS (type) == 0 && TYPE_LENGTH (type) >= 8) |
| 849 | return 1; |
| 850 | return sh_use_struct_convention (renesas_abi, type); |
| 851 | } |
| 852 | |
| 853 | static CORE_ADDR |
| 854 | sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp) |
| 855 | { |
| 856 | return sp & ~3; |
| 857 | } |
| 858 | |
| 859 | /* Function: push_dummy_call (formerly push_arguments) |
| 860 | Setup the function arguments for calling a function in the inferior. |
| 861 | |
| 862 | On the Renesas SH architecture, there are four registers (R4 to R7) |
| 863 | which are dedicated for passing function arguments. Up to the first |
| 864 | four arguments (depending on size) may go into these registers. |
| 865 | The rest go on the stack. |
| 866 | |
| 867 | MVS: Except on SH variants that have floating point registers. |
| 868 | In that case, float and double arguments are passed in the same |
| 869 | manner, but using FP registers instead of GP registers. |
| 870 | |
| 871 | Arguments that are smaller than 4 bytes will still take up a whole |
| 872 | register or a whole 32-bit word on the stack, and will be |
| 873 | right-justified in the register or the stack word. This includes |
| 874 | chars, shorts, and small aggregate types. |
| 875 | |
| 876 | Arguments that are larger than 4 bytes may be split between two or |
| 877 | more registers. If there are not enough registers free, an argument |
| 878 | may be passed partly in a register (or registers), and partly on the |
| 879 | stack. This includes doubles, long longs, and larger aggregates. |
| 880 | As far as I know, there is no upper limit to the size of aggregates |
| 881 | that will be passed in this way; in other words, the convention of |
| 882 | passing a pointer to a large aggregate instead of a copy is not used. |
| 883 | |
| 884 | MVS: The above appears to be true for the SH variants that do not |
| 885 | have an FPU, however those that have an FPU appear to copy the |
| 886 | aggregate argument onto the stack (and not place it in registers) |
| 887 | if it is larger than 16 bytes (four GP registers). |
| 888 | |
| 889 | An exceptional case exists for struct arguments (and possibly other |
| 890 | aggregates such as arrays) if the size is larger than 4 bytes but |
| 891 | not a multiple of 4 bytes. In this case the argument is never split |
| 892 | between the registers and the stack, but instead is copied in its |
| 893 | entirety onto the stack, AND also copied into as many registers as |
| 894 | there is room for. In other words, space in registers permitting, |
| 895 | two copies of the same argument are passed in. As far as I can tell, |
| 896 | only the one on the stack is used, although that may be a function |
| 897 | of the level of compiler optimization. I suspect this is a compiler |
| 898 | bug. Arguments of these odd sizes are left-justified within the |
| 899 | word (as opposed to arguments smaller than 4 bytes, which are |
| 900 | right-justified). |
| 901 | |
| 902 | If the function is to return an aggregate type such as a struct, it |
| 903 | is either returned in the normal return value register R0 (if its |
| 904 | size is no greater than one byte), or else the caller must allocate |
| 905 | space into which the callee will copy the return value (if the size |
| 906 | is greater than one byte). In this case, a pointer to the return |
| 907 | value location is passed into the callee in register R2, which does |
| 908 | not displace any of the other arguments passed in via registers R4 |
| 909 | to R7. */ |
| 910 | |
| 911 | /* Helper function to justify value in register according to endianess. */ |
| 912 | static char * |
| 913 | sh_justify_value_in_reg (struct gdbarch *gdbarch, struct value *val, int len) |
| 914 | { |
| 915 | static char valbuf[4]; |
| 916 | |
| 917 | memset (valbuf, 0, sizeof (valbuf)); |
| 918 | if (len < 4) |
| 919 | { |
| 920 | /* value gets right-justified in the register or stack word */ |
| 921 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 922 | memcpy (valbuf + (4 - len), (char *) value_contents (val), len); |
| 923 | else |
| 924 | memcpy (valbuf, (char *) value_contents (val), len); |
| 925 | return valbuf; |
| 926 | } |
| 927 | return (char *) value_contents (val); |
| 928 | } |
| 929 | |
| 930 | /* Helper function to eval number of bytes to allocate on stack. */ |
| 931 | static CORE_ADDR |
| 932 | sh_stack_allocsize (int nargs, struct value **args) |
| 933 | { |
| 934 | int stack_alloc = 0; |
| 935 | while (nargs-- > 0) |
| 936 | stack_alloc += ((TYPE_LENGTH (value_type (args[nargs])) + 3) & ~3); |
| 937 | return stack_alloc; |
| 938 | } |
| 939 | |
| 940 | /* Helper functions for getting the float arguments right. Registers usage |
| 941 | depends on the ABI and the endianess. The comments should enlighten how |
| 942 | it's intended to work. */ |
| 943 | |
| 944 | /* This array stores which of the float arg registers are already in use. */ |
| 945 | static int flt_argreg_array[FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM + 1]; |
| 946 | |
| 947 | /* This function just resets the above array to "no reg used so far". */ |
| 948 | static void |
| 949 | sh_init_flt_argreg (void) |
| 950 | { |
| 951 | memset (flt_argreg_array, 0, sizeof flt_argreg_array); |
| 952 | } |
| 953 | |
| 954 | /* This function returns the next register to use for float arg passing. |
| 955 | It returns either a valid value between FLOAT_ARG0_REGNUM and |
| 956 | FLOAT_ARGLAST_REGNUM if a register is available, otherwise it returns |
| 957 | FLOAT_ARGLAST_REGNUM + 1 to indicate that no register is available. |
| 958 | |
| 959 | Note that register number 0 in flt_argreg_array corresponds with the |
| 960 | real float register fr4. In contrast to FLOAT_ARG0_REGNUM (value is |
| 961 | 29) the parity of the register number is preserved, which is important |
| 962 | for the double register passing test (see the "argreg & 1" test below). */ |
| 963 | static int |
| 964 | sh_next_flt_argreg (struct gdbarch *gdbarch, int len, struct type *func_type) |
| 965 | { |
| 966 | int argreg; |
| 967 | |
| 968 | /* First search for the next free register. */ |
| 969 | for (argreg = 0; argreg <= FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM; |
| 970 | ++argreg) |
| 971 | if (!flt_argreg_array[argreg]) |
| 972 | break; |
| 973 | |
| 974 | /* No register left? */ |
| 975 | if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM) |
| 976 | return FLOAT_ARGLAST_REGNUM + 1; |
| 977 | |
| 978 | if (len == 8) |
| 979 | { |
| 980 | /* Doubles are always starting in a even register number. */ |
| 981 | if (argreg & 1) |
| 982 | { |
| 983 | /* In gcc ABI, the skipped register is lost for further argument |
| 984 | passing now. Not so in Renesas ABI. */ |
| 985 | if (!sh_is_renesas_calling_convention (func_type)) |
| 986 | flt_argreg_array[argreg] = 1; |
| 987 | |
| 988 | ++argreg; |
| 989 | |
| 990 | /* No register left? */ |
| 991 | if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM) |
| 992 | return FLOAT_ARGLAST_REGNUM + 1; |
| 993 | } |
| 994 | /* Also mark the next register as used. */ |
| 995 | flt_argreg_array[argreg + 1] = 1; |
| 996 | } |
| 997 | else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE |
| 998 | && !sh_is_renesas_calling_convention (func_type)) |
| 999 | { |
| 1000 | /* In little endian, gcc passes floats like this: f5, f4, f7, f6, ... */ |
| 1001 | if (!flt_argreg_array[argreg + 1]) |
| 1002 | ++argreg; |
| 1003 | } |
| 1004 | flt_argreg_array[argreg] = 1; |
| 1005 | return FLOAT_ARG0_REGNUM + argreg; |
| 1006 | } |
| 1007 | |
| 1008 | /* Helper function which figures out, if a type is treated like a float type. |
| 1009 | |
| 1010 | The FPU ABIs have a special way how to treat types as float types. |
| 1011 | Structures with exactly one member, which is of type float or double, are |
| 1012 | treated exactly as the base types float or double: |
| 1013 | |
| 1014 | struct sf { |
| 1015 | float f; |
| 1016 | }; |
| 1017 | |
| 1018 | struct sd { |
| 1019 | double d; |
| 1020 | }; |
| 1021 | |
| 1022 | are handled the same way as just |
| 1023 | |
| 1024 | float f; |
| 1025 | |
| 1026 | double d; |
| 1027 | |
| 1028 | As a result, arguments of these struct types are pushed into floating point |
| 1029 | registers exactly as floats or doubles, using the same decision algorithm. |
| 1030 | |
| 1031 | The same is valid if these types are used as function return types. The |
| 1032 | above structs are returned in fr0 resp. fr0,fr1 instead of in r0, r0,r1 |
| 1033 | or even using struct convention as it is for other structs. */ |
| 1034 | |
| 1035 | static int |
| 1036 | sh_treat_as_flt_p (struct type *type) |
| 1037 | { |
| 1038 | int len = TYPE_LENGTH (type); |
| 1039 | |
| 1040 | /* Ordinary float types are obviously treated as float. */ |
| 1041 | if (TYPE_CODE (type) == TYPE_CODE_FLT) |
| 1042 | return 1; |
| 1043 | /* Otherwise non-struct types are not treated as float. */ |
| 1044 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT) |
| 1045 | return 0; |
| 1046 | /* Otherwise structs with more than one memeber are not treated as float. */ |
| 1047 | if (TYPE_NFIELDS (type) != 1) |
| 1048 | return 0; |
| 1049 | /* Otherwise if the type of that member is float, the whole type is |
| 1050 | treated as float. */ |
| 1051 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_FLT) |
| 1052 | return 1; |
| 1053 | /* Otherwise it's not treated as float. */ |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | static CORE_ADDR |
| 1058 | sh_push_dummy_call_fpu (struct gdbarch *gdbarch, |
| 1059 | struct value *function, |
| 1060 | struct regcache *regcache, |
| 1061 | CORE_ADDR bp_addr, int nargs, |
| 1062 | struct value **args, |
| 1063 | CORE_ADDR sp, int struct_return, |
| 1064 | CORE_ADDR struct_addr) |
| 1065 | { |
| 1066 | int stack_offset = 0; |
| 1067 | int argreg = ARG0_REGNUM; |
| 1068 | int flt_argreg = 0; |
| 1069 | int argnum; |
| 1070 | struct type *func_type = value_type (function); |
| 1071 | struct type *type; |
| 1072 | CORE_ADDR regval; |
| 1073 | char *val; |
| 1074 | int len, reg_size = 0; |
| 1075 | int pass_on_stack = 0; |
| 1076 | int treat_as_flt; |
| 1077 | int last_reg_arg = INT_MAX; |
| 1078 | |
| 1079 | /* The Renesas ABI expects all varargs arguments, plus the last |
| 1080 | non-vararg argument to be on the stack, no matter how many |
| 1081 | registers have been used so far. */ |
| 1082 | if (sh_is_renesas_calling_convention (func_type) |
| 1083 | && (TYPE_FLAGS (func_type) & TYPE_FLAG_VARARGS)) |
| 1084 | last_reg_arg = TYPE_NFIELDS (func_type) - 2; |
| 1085 | |
| 1086 | /* first force sp to a 4-byte alignment */ |
| 1087 | sp = sh_frame_align (gdbarch, sp); |
| 1088 | |
| 1089 | /* make room on stack for args */ |
| 1090 | sp -= sh_stack_allocsize (nargs, args); |
| 1091 | |
| 1092 | /* Initialize float argument mechanism. */ |
| 1093 | sh_init_flt_argreg (); |
| 1094 | |
| 1095 | /* Now load as many as possible of the first arguments into |
| 1096 | registers, and push the rest onto the stack. There are 16 bytes |
| 1097 | in four registers available. Loop thru args from first to last. */ |
| 1098 | for (argnum = 0; argnum < nargs; argnum++) |
| 1099 | { |
| 1100 | type = value_type (args[argnum]); |
| 1101 | len = TYPE_LENGTH (type); |
| 1102 | val = sh_justify_value_in_reg (gdbarch, args[argnum], len); |
| 1103 | |
| 1104 | /* Some decisions have to be made how various types are handled. |
| 1105 | This also differs in different ABIs. */ |
| 1106 | pass_on_stack = 0; |
| 1107 | |
| 1108 | /* Find out the next register to use for a floating point value. */ |
| 1109 | treat_as_flt = sh_treat_as_flt_p (type); |
| 1110 | if (treat_as_flt) |
| 1111 | flt_argreg = sh_next_flt_argreg (gdbarch, len, func_type); |
| 1112 | /* In Renesas ABI, long longs and aggregate types are always passed |
| 1113 | on stack. */ |
| 1114 | else if (sh_is_renesas_calling_convention (func_type) |
| 1115 | && ((TYPE_CODE (type) == TYPE_CODE_INT && len == 8) |
| 1116 | || TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1117 | || TYPE_CODE (type) == TYPE_CODE_UNION)) |
| 1118 | pass_on_stack = 1; |
| 1119 | /* In contrast to non-FPU CPUs, arguments are never split between |
| 1120 | registers and stack. If an argument doesn't fit in the remaining |
| 1121 | registers it's always pushed entirely on the stack. */ |
| 1122 | else if (len > ((ARGLAST_REGNUM - argreg + 1) * 4)) |
| 1123 | pass_on_stack = 1; |
| 1124 | |
| 1125 | while (len > 0) |
| 1126 | { |
| 1127 | if ((treat_as_flt && flt_argreg > FLOAT_ARGLAST_REGNUM) |
| 1128 | || (!treat_as_flt && (argreg > ARGLAST_REGNUM |
| 1129 | || pass_on_stack)) |
| 1130 | || argnum > last_reg_arg) |
| 1131 | { |
| 1132 | /* The data goes entirely on the stack, 4-byte aligned. */ |
| 1133 | reg_size = (len + 3) & ~3; |
| 1134 | write_memory (sp + stack_offset, val, reg_size); |
| 1135 | stack_offset += reg_size; |
| 1136 | } |
| 1137 | else if (treat_as_flt && flt_argreg <= FLOAT_ARGLAST_REGNUM) |
| 1138 | { |
| 1139 | /* Argument goes in a float argument register. */ |
| 1140 | reg_size = register_size (gdbarch, flt_argreg); |
| 1141 | regval = extract_unsigned_integer (val, reg_size); |
| 1142 | /* In little endian mode, float types taking two registers |
| 1143 | (doubles on sh4, long doubles on sh2e, sh3e and sh4) must |
| 1144 | be stored swapped in the argument registers. The below |
| 1145 | code first writes the first 32 bits in the next but one |
| 1146 | register, increments the val and len values accordingly |
| 1147 | and then proceeds as normal by writing the second 32 bits |
| 1148 | into the next register. */ |
| 1149 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE |
| 1150 | && TYPE_LENGTH (type) == 2 * reg_size) |
| 1151 | { |
| 1152 | regcache_cooked_write_unsigned (regcache, flt_argreg + 1, |
| 1153 | regval); |
| 1154 | val += reg_size; |
| 1155 | len -= reg_size; |
| 1156 | regval = extract_unsigned_integer (val, reg_size); |
| 1157 | } |
| 1158 | regcache_cooked_write_unsigned (regcache, flt_argreg++, regval); |
| 1159 | } |
| 1160 | else if (!treat_as_flt && argreg <= ARGLAST_REGNUM) |
| 1161 | { |
| 1162 | /* there's room in a register */ |
| 1163 | reg_size = register_size (gdbarch, argreg); |
| 1164 | regval = extract_unsigned_integer (val, reg_size); |
| 1165 | regcache_cooked_write_unsigned (regcache, argreg++, regval); |
| 1166 | } |
| 1167 | /* Store the value one register at a time or in one step on stack. */ |
| 1168 | len -= reg_size; |
| 1169 | val += reg_size; |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | if (struct_return) |
| 1174 | { |
| 1175 | if (sh_is_renesas_calling_convention (func_type)) |
| 1176 | /* If the function uses the Renesas ABI, subtract another 4 bytes from |
| 1177 | the stack and store the struct return address there. */ |
| 1178 | write_memory_unsigned_integer (sp -= 4, 4, struct_addr); |
| 1179 | else |
| 1180 | /* Using the gcc ABI, the "struct return pointer" pseudo-argument has |
| 1181 | its own dedicated register. */ |
| 1182 | regcache_cooked_write_unsigned (regcache, |
| 1183 | STRUCT_RETURN_REGNUM, struct_addr); |
| 1184 | } |
| 1185 | |
| 1186 | /* Store return address. */ |
| 1187 | regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr); |
| 1188 | |
| 1189 | /* Update stack pointer. */ |
| 1190 | regcache_cooked_write_unsigned (regcache, |
| 1191 | gdbarch_sp_regnum (gdbarch), sp); |
| 1192 | |
| 1193 | return sp; |
| 1194 | } |
| 1195 | |
| 1196 | static CORE_ADDR |
| 1197 | sh_push_dummy_call_nofpu (struct gdbarch *gdbarch, |
| 1198 | struct value *function, |
| 1199 | struct regcache *regcache, |
| 1200 | CORE_ADDR bp_addr, |
| 1201 | int nargs, struct value **args, |
| 1202 | CORE_ADDR sp, int struct_return, |
| 1203 | CORE_ADDR struct_addr) |
| 1204 | { |
| 1205 | int stack_offset = 0; |
| 1206 | int argreg = ARG0_REGNUM; |
| 1207 | int argnum; |
| 1208 | struct type *func_type = value_type (function); |
| 1209 | struct type *type; |
| 1210 | CORE_ADDR regval; |
| 1211 | char *val; |
| 1212 | int len, reg_size = 0; |
| 1213 | int pass_on_stack = 0; |
| 1214 | int last_reg_arg = INT_MAX; |
| 1215 | |
| 1216 | /* The Renesas ABI expects all varargs arguments, plus the last |
| 1217 | non-vararg argument to be on the stack, no matter how many |
| 1218 | registers have been used so far. */ |
| 1219 | if (sh_is_renesas_calling_convention (func_type) |
| 1220 | && (TYPE_FLAGS (func_type) & TYPE_FLAG_VARARGS)) |
| 1221 | last_reg_arg = TYPE_NFIELDS (func_type) - 2; |
| 1222 | |
| 1223 | /* first force sp to a 4-byte alignment */ |
| 1224 | sp = sh_frame_align (gdbarch, sp); |
| 1225 | |
| 1226 | /* make room on stack for args */ |
| 1227 | sp -= sh_stack_allocsize (nargs, args); |
| 1228 | |
| 1229 | /* Now load as many as possible of the first arguments into |
| 1230 | registers, and push the rest onto the stack. There are 16 bytes |
| 1231 | in four registers available. Loop thru args from first to last. */ |
| 1232 | for (argnum = 0; argnum < nargs; argnum++) |
| 1233 | { |
| 1234 | type = value_type (args[argnum]); |
| 1235 | len = TYPE_LENGTH (type); |
| 1236 | val = sh_justify_value_in_reg (gdbarch, args[argnum], len); |
| 1237 | |
| 1238 | /* Some decisions have to be made how various types are handled. |
| 1239 | This also differs in different ABIs. */ |
| 1240 | pass_on_stack = 0; |
| 1241 | /* Renesas ABI pushes doubles and long longs entirely on stack. |
| 1242 | Same goes for aggregate types. */ |
| 1243 | if (sh_is_renesas_calling_convention (func_type) |
| 1244 | && ((TYPE_CODE (type) == TYPE_CODE_INT && len >= 8) |
| 1245 | || (TYPE_CODE (type) == TYPE_CODE_FLT && len >= 8) |
| 1246 | || TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1247 | || TYPE_CODE (type) == TYPE_CODE_UNION)) |
| 1248 | pass_on_stack = 1; |
| 1249 | while (len > 0) |
| 1250 | { |
| 1251 | if (argreg > ARGLAST_REGNUM || pass_on_stack |
| 1252 | || argnum > last_reg_arg) |
| 1253 | { |
| 1254 | /* The remainder of the data goes entirely on the stack, |
| 1255 | 4-byte aligned. */ |
| 1256 | reg_size = (len + 3) & ~3; |
| 1257 | write_memory (sp + stack_offset, val, reg_size); |
| 1258 | stack_offset += reg_size; |
| 1259 | } |
| 1260 | else if (argreg <= ARGLAST_REGNUM) |
| 1261 | { |
| 1262 | /* there's room in a register */ |
| 1263 | reg_size = register_size (gdbarch, argreg); |
| 1264 | regval = extract_unsigned_integer (val, reg_size); |
| 1265 | regcache_cooked_write_unsigned (regcache, argreg++, regval); |
| 1266 | } |
| 1267 | /* Store the value reg_size bytes at a time. This means that things |
| 1268 | larger than reg_size bytes may go partly in registers and partly |
| 1269 | on the stack. */ |
| 1270 | len -= reg_size; |
| 1271 | val += reg_size; |
| 1272 | } |
| 1273 | } |
| 1274 | |
| 1275 | if (struct_return) |
| 1276 | { |
| 1277 | if (sh_is_renesas_calling_convention (func_type)) |
| 1278 | /* If the function uses the Renesas ABI, subtract another 4 bytes from |
| 1279 | the stack and store the struct return address there. */ |
| 1280 | write_memory_unsigned_integer (sp -= 4, 4, struct_addr); |
| 1281 | else |
| 1282 | /* Using the gcc ABI, the "struct return pointer" pseudo-argument has |
| 1283 | its own dedicated register. */ |
| 1284 | regcache_cooked_write_unsigned (regcache, |
| 1285 | STRUCT_RETURN_REGNUM, struct_addr); |
| 1286 | } |
| 1287 | |
| 1288 | /* Store return address. */ |
| 1289 | regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr); |
| 1290 | |
| 1291 | /* Update stack pointer. */ |
| 1292 | regcache_cooked_write_unsigned (regcache, |
| 1293 | gdbarch_sp_regnum (gdbarch), sp); |
| 1294 | |
| 1295 | return sp; |
| 1296 | } |
| 1297 | |
| 1298 | /* Find a function's return value in the appropriate registers (in |
| 1299 | regbuf), and copy it into valbuf. Extract from an array REGBUF |
| 1300 | containing the (raw) register state a function return value of type |
| 1301 | TYPE, and copy that, in virtual format, into VALBUF. */ |
| 1302 | static void |
| 1303 | sh_extract_return_value_nofpu (struct type *type, struct regcache *regcache, |
| 1304 | void *valbuf) |
| 1305 | { |
| 1306 | int len = TYPE_LENGTH (type); |
| 1307 | int return_register = R0_REGNUM; |
| 1308 | int offset; |
| 1309 | |
| 1310 | if (len <= 4) |
| 1311 | { |
| 1312 | ULONGEST c; |
| 1313 | |
| 1314 | regcache_cooked_read_unsigned (regcache, R0_REGNUM, &c); |
| 1315 | store_unsigned_integer (valbuf, len, c); |
| 1316 | } |
| 1317 | else if (len == 8) |
| 1318 | { |
| 1319 | int i, regnum = R0_REGNUM; |
| 1320 | for (i = 0; i < len; i += 4) |
| 1321 | regcache_raw_read (regcache, regnum++, (char *) valbuf + i); |
| 1322 | } |
| 1323 | else |
| 1324 | error (_("bad size for return value")); |
| 1325 | } |
| 1326 | |
| 1327 | static void |
| 1328 | sh_extract_return_value_fpu (struct type *type, struct regcache *regcache, |
| 1329 | void *valbuf) |
| 1330 | { |
| 1331 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 1332 | if (sh_treat_as_flt_p (type)) |
| 1333 | { |
| 1334 | int len = TYPE_LENGTH (type); |
| 1335 | int i, regnum = gdbarch_fp0_regnum (gdbarch); |
| 1336 | for (i = 0; i < len; i += 4) |
| 1337 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE) |
| 1338 | regcache_raw_read (regcache, regnum++, (char *) valbuf + len - 4 - i); |
| 1339 | else |
| 1340 | regcache_raw_read (regcache, regnum++, (char *) valbuf + i); |
| 1341 | } |
| 1342 | else |
| 1343 | sh_extract_return_value_nofpu (type, regcache, valbuf); |
| 1344 | } |
| 1345 | |
| 1346 | /* Write into appropriate registers a function return value |
| 1347 | of type TYPE, given in virtual format. |
| 1348 | If the architecture is sh4 or sh3e, store a function's return value |
| 1349 | in the R0 general register or in the FP0 floating point register, |
| 1350 | depending on the type of the return value. In all the other cases |
| 1351 | the result is stored in r0, left-justified. */ |
| 1352 | static void |
| 1353 | sh_store_return_value_nofpu (struct type *type, struct regcache *regcache, |
| 1354 | const void *valbuf) |
| 1355 | { |
| 1356 | ULONGEST val; |
| 1357 | int len = TYPE_LENGTH (type); |
| 1358 | |
| 1359 | if (len <= 4) |
| 1360 | { |
| 1361 | val = extract_unsigned_integer (valbuf, len); |
| 1362 | regcache_cooked_write_unsigned (regcache, R0_REGNUM, val); |
| 1363 | } |
| 1364 | else |
| 1365 | { |
| 1366 | int i, regnum = R0_REGNUM; |
| 1367 | for (i = 0; i < len; i += 4) |
| 1368 | regcache_raw_write (regcache, regnum++, (char *) valbuf + i); |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | static void |
| 1373 | sh_store_return_value_fpu (struct type *type, struct regcache *regcache, |
| 1374 | const void *valbuf) |
| 1375 | { |
| 1376 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 1377 | if (sh_treat_as_flt_p (type)) |
| 1378 | { |
| 1379 | int len = TYPE_LENGTH (type); |
| 1380 | int i, regnum = gdbarch_fp0_regnum (gdbarch); |
| 1381 | for (i = 0; i < len; i += 4) |
| 1382 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE) |
| 1383 | regcache_raw_write (regcache, regnum++, |
| 1384 | (char *) valbuf + len - 4 - i); |
| 1385 | else |
| 1386 | regcache_raw_write (regcache, regnum++, (char *) valbuf + i); |
| 1387 | } |
| 1388 | else |
| 1389 | sh_store_return_value_nofpu (type, regcache, valbuf); |
| 1390 | } |
| 1391 | |
| 1392 | static enum return_value_convention |
| 1393 | sh_return_value_nofpu (struct gdbarch *gdbarch, struct type *func_type, |
| 1394 | struct type *type, struct regcache *regcache, |
| 1395 | gdb_byte *readbuf, const gdb_byte *writebuf) |
| 1396 | { |
| 1397 | if (sh_use_struct_convention_nofpu ( |
| 1398 | sh_is_renesas_calling_convention (func_type), type)) |
| 1399 | return RETURN_VALUE_STRUCT_CONVENTION; |
| 1400 | if (writebuf) |
| 1401 | sh_store_return_value_nofpu (type, regcache, writebuf); |
| 1402 | else if (readbuf) |
| 1403 | sh_extract_return_value_nofpu (type, regcache, readbuf); |
| 1404 | return RETURN_VALUE_REGISTER_CONVENTION; |
| 1405 | } |
| 1406 | |
| 1407 | static enum return_value_convention |
| 1408 | sh_return_value_fpu (struct gdbarch *gdbarch, struct type *func_type, |
| 1409 | struct type *type, struct regcache *regcache, |
| 1410 | gdb_byte *readbuf, const gdb_byte *writebuf) |
| 1411 | { |
| 1412 | if (sh_use_struct_convention ( |
| 1413 | sh_is_renesas_calling_convention (func_type), type)) |
| 1414 | return RETURN_VALUE_STRUCT_CONVENTION; |
| 1415 | if (writebuf) |
| 1416 | sh_store_return_value_fpu (type, regcache, writebuf); |
| 1417 | else if (readbuf) |
| 1418 | sh_extract_return_value_fpu (type, regcache, readbuf); |
| 1419 | return RETURN_VALUE_REGISTER_CONVENTION; |
| 1420 | } |
| 1421 | |
| 1422 | /* Print the registers in a form similar to the E7000 */ |
| 1423 | |
| 1424 | static void |
| 1425 | sh_generic_show_regs (struct frame_info *frame) |
| 1426 | { |
| 1427 | printf_filtered |
| 1428 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1429 | paddr (get_frame_register_unsigned (frame, |
| 1430 | gdbarch_pc_regnum |
| 1431 | (get_frame_arch (frame)))), |
| 1432 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1433 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1434 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1435 | |
| 1436 | printf_filtered |
| 1437 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1438 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1439 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1440 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1441 | |
| 1442 | printf_filtered |
| 1443 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1444 | (long) get_frame_register_unsigned (frame, 0), |
| 1445 | (long) get_frame_register_unsigned (frame, 1), |
| 1446 | (long) get_frame_register_unsigned (frame, 2), |
| 1447 | (long) get_frame_register_unsigned (frame, 3), |
| 1448 | (long) get_frame_register_unsigned (frame, 4), |
| 1449 | (long) get_frame_register_unsigned (frame, 5), |
| 1450 | (long) get_frame_register_unsigned (frame, 6), |
| 1451 | (long) get_frame_register_unsigned (frame, 7)); |
| 1452 | printf_filtered |
| 1453 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1454 | (long) get_frame_register_unsigned (frame, 8), |
| 1455 | (long) get_frame_register_unsigned (frame, 9), |
| 1456 | (long) get_frame_register_unsigned (frame, 10), |
| 1457 | (long) get_frame_register_unsigned (frame, 11), |
| 1458 | (long) get_frame_register_unsigned (frame, 12), |
| 1459 | (long) get_frame_register_unsigned (frame, 13), |
| 1460 | (long) get_frame_register_unsigned (frame, 14), |
| 1461 | (long) get_frame_register_unsigned (frame, 15)); |
| 1462 | } |
| 1463 | |
| 1464 | static void |
| 1465 | sh3_show_regs (struct frame_info *frame) |
| 1466 | { |
| 1467 | printf_filtered |
| 1468 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1469 | paddr (get_frame_register_unsigned (frame, |
| 1470 | gdbarch_pc_regnum |
| 1471 | (get_frame_arch (frame)))), |
| 1472 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1473 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1474 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1475 | |
| 1476 | printf_filtered |
| 1477 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1478 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1479 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1480 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1481 | printf_filtered |
| 1482 | (" SSR %08lx SPC %08lx\n", |
| 1483 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1484 | (long) get_frame_register_unsigned (frame, SPC_REGNUM)); |
| 1485 | |
| 1486 | printf_filtered |
| 1487 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1488 | (long) get_frame_register_unsigned (frame, 0), |
| 1489 | (long) get_frame_register_unsigned (frame, 1), |
| 1490 | (long) get_frame_register_unsigned (frame, 2), |
| 1491 | (long) get_frame_register_unsigned (frame, 3), |
| 1492 | (long) get_frame_register_unsigned (frame, 4), |
| 1493 | (long) get_frame_register_unsigned (frame, 5), |
| 1494 | (long) get_frame_register_unsigned (frame, 6), |
| 1495 | (long) get_frame_register_unsigned (frame, 7)); |
| 1496 | printf_filtered |
| 1497 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1498 | (long) get_frame_register_unsigned (frame, 8), |
| 1499 | (long) get_frame_register_unsigned (frame, 9), |
| 1500 | (long) get_frame_register_unsigned (frame, 10), |
| 1501 | (long) get_frame_register_unsigned (frame, 11), |
| 1502 | (long) get_frame_register_unsigned (frame, 12), |
| 1503 | (long) get_frame_register_unsigned (frame, 13), |
| 1504 | (long) get_frame_register_unsigned (frame, 14), |
| 1505 | (long) get_frame_register_unsigned (frame, 15)); |
| 1506 | } |
| 1507 | |
| 1508 | static void |
| 1509 | sh2e_show_regs (struct frame_info *frame) |
| 1510 | { |
| 1511 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1512 | printf_filtered |
| 1513 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1514 | paddr (get_frame_register_unsigned (frame, |
| 1515 | gdbarch_pc_regnum (gdbarch))), |
| 1516 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1517 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1518 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1519 | |
| 1520 | printf_filtered |
| 1521 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1522 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1523 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1524 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1525 | printf_filtered |
| 1526 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 1527 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1528 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1529 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 1530 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 1531 | |
| 1532 | printf_filtered |
| 1533 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1534 | (long) get_frame_register_unsigned (frame, 0), |
| 1535 | (long) get_frame_register_unsigned (frame, 1), |
| 1536 | (long) get_frame_register_unsigned (frame, 2), |
| 1537 | (long) get_frame_register_unsigned (frame, 3), |
| 1538 | (long) get_frame_register_unsigned (frame, 4), |
| 1539 | (long) get_frame_register_unsigned (frame, 5), |
| 1540 | (long) get_frame_register_unsigned (frame, 6), |
| 1541 | (long) get_frame_register_unsigned (frame, 7)); |
| 1542 | printf_filtered |
| 1543 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1544 | (long) get_frame_register_unsigned (frame, 8), |
| 1545 | (long) get_frame_register_unsigned (frame, 9), |
| 1546 | (long) get_frame_register_unsigned (frame, 10), |
| 1547 | (long) get_frame_register_unsigned (frame, 11), |
| 1548 | (long) get_frame_register_unsigned (frame, 12), |
| 1549 | (long) get_frame_register_unsigned (frame, 13), |
| 1550 | (long) get_frame_register_unsigned (frame, 14), |
| 1551 | (long) get_frame_register_unsigned (frame, 15)); |
| 1552 | |
| 1553 | printf_filtered |
| 1554 | ("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1555 | (long) get_frame_register_unsigned |
| 1556 | (frame, gdbarch_fp0_regnum (gdbarch) + 0), |
| 1557 | (long) get_frame_register_unsigned |
| 1558 | (frame, gdbarch_fp0_regnum (gdbarch) + 1), |
| 1559 | (long) get_frame_register_unsigned |
| 1560 | (frame, gdbarch_fp0_regnum (gdbarch) + 2), |
| 1561 | (long) get_frame_register_unsigned |
| 1562 | (frame, gdbarch_fp0_regnum (gdbarch) + 3), |
| 1563 | (long) get_frame_register_unsigned |
| 1564 | (frame, gdbarch_fp0_regnum (gdbarch) + 4), |
| 1565 | (long) get_frame_register_unsigned |
| 1566 | (frame, gdbarch_fp0_regnum (gdbarch) + 5), |
| 1567 | (long) get_frame_register_unsigned |
| 1568 | (frame, gdbarch_fp0_regnum (gdbarch) + 6), |
| 1569 | (long) get_frame_register_unsigned |
| 1570 | (frame, gdbarch_fp0_regnum (gdbarch) + 7)); |
| 1571 | printf_filtered |
| 1572 | ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1573 | (long) get_frame_register_unsigned |
| 1574 | (frame, gdbarch_fp0_regnum (gdbarch) + 8), |
| 1575 | (long) get_frame_register_unsigned |
| 1576 | (frame, gdbarch_fp0_regnum (gdbarch) + 9), |
| 1577 | (long) get_frame_register_unsigned |
| 1578 | (frame, gdbarch_fp0_regnum (gdbarch) + 10), |
| 1579 | (long) get_frame_register_unsigned |
| 1580 | (frame, gdbarch_fp0_regnum (gdbarch) + 11), |
| 1581 | (long) get_frame_register_unsigned |
| 1582 | (frame, gdbarch_fp0_regnum (gdbarch) + 12), |
| 1583 | (long) get_frame_register_unsigned |
| 1584 | (frame, gdbarch_fp0_regnum (gdbarch) + 13), |
| 1585 | (long) get_frame_register_unsigned |
| 1586 | (frame, gdbarch_fp0_regnum (gdbarch) + 14), |
| 1587 | (long) get_frame_register_unsigned |
| 1588 | (frame, gdbarch_fp0_regnum (gdbarch) + 15)); |
| 1589 | } |
| 1590 | |
| 1591 | static void |
| 1592 | sh2a_show_regs (struct frame_info *frame) |
| 1593 | { |
| 1594 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1595 | int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000; |
| 1596 | |
| 1597 | printf_filtered |
| 1598 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1599 | paddr (get_frame_register_unsigned (frame, |
| 1600 | gdbarch_pc_regnum (gdbarch))), |
| 1601 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1602 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1603 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1604 | |
| 1605 | printf_filtered |
| 1606 | (" GBR %08lx VBR %08lx TBR %08lx MACL %08lx\n", |
| 1607 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1608 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1609 | (long) get_frame_register_unsigned (frame, TBR_REGNUM), |
| 1610 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1611 | printf_filtered |
| 1612 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 1613 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1614 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1615 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 1616 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 1617 | |
| 1618 | printf_filtered |
| 1619 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1620 | (long) get_frame_register_unsigned (frame, 0), |
| 1621 | (long) get_frame_register_unsigned (frame, 1), |
| 1622 | (long) get_frame_register_unsigned (frame, 2), |
| 1623 | (long) get_frame_register_unsigned (frame, 3), |
| 1624 | (long) get_frame_register_unsigned (frame, 4), |
| 1625 | (long) get_frame_register_unsigned (frame, 5), |
| 1626 | (long) get_frame_register_unsigned (frame, 6), |
| 1627 | (long) get_frame_register_unsigned (frame, 7)); |
| 1628 | printf_filtered |
| 1629 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1630 | (long) get_frame_register_unsigned (frame, 8), |
| 1631 | (long) get_frame_register_unsigned (frame, 9), |
| 1632 | (long) get_frame_register_unsigned (frame, 10), |
| 1633 | (long) get_frame_register_unsigned (frame, 11), |
| 1634 | (long) get_frame_register_unsigned (frame, 12), |
| 1635 | (long) get_frame_register_unsigned (frame, 13), |
| 1636 | (long) get_frame_register_unsigned (frame, 14), |
| 1637 | (long) get_frame_register_unsigned (frame, 15)); |
| 1638 | |
| 1639 | printf_filtered |
| 1640 | (pr ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" |
| 1641 | : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1642 | (long) get_frame_register_unsigned |
| 1643 | (frame, gdbarch_fp0_regnum (gdbarch) + 0), |
| 1644 | (long) get_frame_register_unsigned |
| 1645 | (frame, gdbarch_fp0_regnum (gdbarch) + 1), |
| 1646 | (long) get_frame_register_unsigned |
| 1647 | (frame, gdbarch_fp0_regnum (gdbarch) + 2), |
| 1648 | (long) get_frame_register_unsigned |
| 1649 | (frame, gdbarch_fp0_regnum (gdbarch) + 3), |
| 1650 | (long) get_frame_register_unsigned |
| 1651 | (frame, gdbarch_fp0_regnum (gdbarch) + 4), |
| 1652 | (long) get_frame_register_unsigned |
| 1653 | (frame, gdbarch_fp0_regnum (gdbarch) + 5), |
| 1654 | (long) get_frame_register_unsigned |
| 1655 | (frame, gdbarch_fp0_regnum (gdbarch) + 6), |
| 1656 | (long) get_frame_register_unsigned |
| 1657 | (frame, gdbarch_fp0_regnum (gdbarch) + 7)); |
| 1658 | printf_filtered |
| 1659 | (pr ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" |
| 1660 | : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1661 | (long) get_frame_register_unsigned |
| 1662 | (frame, gdbarch_fp0_regnum (gdbarch) + 8), |
| 1663 | (long) get_frame_register_unsigned |
| 1664 | (frame, gdbarch_fp0_regnum (gdbarch) + 9), |
| 1665 | (long) get_frame_register_unsigned |
| 1666 | (frame, gdbarch_fp0_regnum (gdbarch) + 10), |
| 1667 | (long) get_frame_register_unsigned |
| 1668 | (frame, gdbarch_fp0_regnum (gdbarch) + 11), |
| 1669 | (long) get_frame_register_unsigned |
| 1670 | (frame, gdbarch_fp0_regnum (gdbarch) + 12), |
| 1671 | (long) get_frame_register_unsigned |
| 1672 | (frame, gdbarch_fp0_regnum (gdbarch) + 13), |
| 1673 | (long) get_frame_register_unsigned |
| 1674 | (frame, gdbarch_fp0_regnum (gdbarch) + 14), |
| 1675 | (long) get_frame_register_unsigned |
| 1676 | (frame, gdbarch_fp0_regnum (gdbarch) + 15)); |
| 1677 | printf_filtered |
| 1678 | ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM)); |
| 1679 | printf_filtered |
| 1680 | ("R0b-R7b %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1681 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0), |
| 1682 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1), |
| 1683 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2), |
| 1684 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3), |
| 1685 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4), |
| 1686 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5), |
| 1687 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6), |
| 1688 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7)); |
| 1689 | printf_filtered |
| 1690 | ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1691 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8), |
| 1692 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9), |
| 1693 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10), |
| 1694 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11), |
| 1695 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12), |
| 1696 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13), |
| 1697 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14)); |
| 1698 | printf_filtered |
| 1699 | ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n", |
| 1700 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15), |
| 1701 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16), |
| 1702 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17), |
| 1703 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18), |
| 1704 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19)); |
| 1705 | } |
| 1706 | |
| 1707 | static void |
| 1708 | sh2a_nofpu_show_regs (struct frame_info *frame) |
| 1709 | { |
| 1710 | int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000; |
| 1711 | |
| 1712 | printf_filtered |
| 1713 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1714 | paddr (get_frame_register_unsigned (frame, |
| 1715 | gdbarch_pc_regnum |
| 1716 | (get_frame_arch (frame)))), |
| 1717 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1718 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1719 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1720 | |
| 1721 | printf_filtered |
| 1722 | (" GBR %08lx VBR %08lx TBR %08lx MACL %08lx\n", |
| 1723 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1724 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1725 | (long) get_frame_register_unsigned (frame, TBR_REGNUM), |
| 1726 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1727 | printf_filtered |
| 1728 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 1729 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1730 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1731 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 1732 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 1733 | |
| 1734 | printf_filtered |
| 1735 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1736 | (long) get_frame_register_unsigned (frame, 0), |
| 1737 | (long) get_frame_register_unsigned (frame, 1), |
| 1738 | (long) get_frame_register_unsigned (frame, 2), |
| 1739 | (long) get_frame_register_unsigned (frame, 3), |
| 1740 | (long) get_frame_register_unsigned (frame, 4), |
| 1741 | (long) get_frame_register_unsigned (frame, 5), |
| 1742 | (long) get_frame_register_unsigned (frame, 6), |
| 1743 | (long) get_frame_register_unsigned (frame, 7)); |
| 1744 | printf_filtered |
| 1745 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1746 | (long) get_frame_register_unsigned (frame, 8), |
| 1747 | (long) get_frame_register_unsigned (frame, 9), |
| 1748 | (long) get_frame_register_unsigned (frame, 10), |
| 1749 | (long) get_frame_register_unsigned (frame, 11), |
| 1750 | (long) get_frame_register_unsigned (frame, 12), |
| 1751 | (long) get_frame_register_unsigned (frame, 13), |
| 1752 | (long) get_frame_register_unsigned (frame, 14), |
| 1753 | (long) get_frame_register_unsigned (frame, 15)); |
| 1754 | |
| 1755 | printf_filtered |
| 1756 | ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM)); |
| 1757 | printf_filtered |
| 1758 | ("R0b-R7b %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1759 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0), |
| 1760 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1), |
| 1761 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2), |
| 1762 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3), |
| 1763 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4), |
| 1764 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5), |
| 1765 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6), |
| 1766 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7)); |
| 1767 | printf_filtered |
| 1768 | ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1769 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8), |
| 1770 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9), |
| 1771 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10), |
| 1772 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11), |
| 1773 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12), |
| 1774 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13), |
| 1775 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14)); |
| 1776 | printf_filtered |
| 1777 | ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n", |
| 1778 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15), |
| 1779 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16), |
| 1780 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17), |
| 1781 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18), |
| 1782 | (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19)); |
| 1783 | } |
| 1784 | |
| 1785 | static void |
| 1786 | sh3e_show_regs (struct frame_info *frame) |
| 1787 | { |
| 1788 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1789 | printf_filtered |
| 1790 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1791 | paddr (get_frame_register_unsigned (frame, |
| 1792 | gdbarch_pc_regnum (gdbarch))), |
| 1793 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1794 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1795 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1796 | |
| 1797 | printf_filtered |
| 1798 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1799 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1800 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1801 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1802 | printf_filtered |
| 1803 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 1804 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1805 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1806 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 1807 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 1808 | |
| 1809 | printf_filtered |
| 1810 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1811 | (long) get_frame_register_unsigned (frame, 0), |
| 1812 | (long) get_frame_register_unsigned (frame, 1), |
| 1813 | (long) get_frame_register_unsigned (frame, 2), |
| 1814 | (long) get_frame_register_unsigned (frame, 3), |
| 1815 | (long) get_frame_register_unsigned (frame, 4), |
| 1816 | (long) get_frame_register_unsigned (frame, 5), |
| 1817 | (long) get_frame_register_unsigned (frame, 6), |
| 1818 | (long) get_frame_register_unsigned (frame, 7)); |
| 1819 | printf_filtered |
| 1820 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1821 | (long) get_frame_register_unsigned (frame, 8), |
| 1822 | (long) get_frame_register_unsigned (frame, 9), |
| 1823 | (long) get_frame_register_unsigned (frame, 10), |
| 1824 | (long) get_frame_register_unsigned (frame, 11), |
| 1825 | (long) get_frame_register_unsigned (frame, 12), |
| 1826 | (long) get_frame_register_unsigned (frame, 13), |
| 1827 | (long) get_frame_register_unsigned (frame, 14), |
| 1828 | (long) get_frame_register_unsigned (frame, 15)); |
| 1829 | |
| 1830 | printf_filtered |
| 1831 | ("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1832 | (long) get_frame_register_unsigned |
| 1833 | (frame, gdbarch_fp0_regnum (gdbarch) + 0), |
| 1834 | (long) get_frame_register_unsigned |
| 1835 | (frame, gdbarch_fp0_regnum (gdbarch) + 1), |
| 1836 | (long) get_frame_register_unsigned |
| 1837 | (frame, gdbarch_fp0_regnum (gdbarch) + 2), |
| 1838 | (long) get_frame_register_unsigned |
| 1839 | (frame, gdbarch_fp0_regnum (gdbarch) + 3), |
| 1840 | (long) get_frame_register_unsigned |
| 1841 | (frame, gdbarch_fp0_regnum (gdbarch) + 4), |
| 1842 | (long) get_frame_register_unsigned |
| 1843 | (frame, gdbarch_fp0_regnum (gdbarch) + 5), |
| 1844 | (long) get_frame_register_unsigned |
| 1845 | (frame, gdbarch_fp0_regnum (gdbarch) + 6), |
| 1846 | (long) get_frame_register_unsigned |
| 1847 | (frame, gdbarch_fp0_regnum (gdbarch) + 7)); |
| 1848 | printf_filtered |
| 1849 | ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1850 | (long) get_frame_register_unsigned |
| 1851 | (frame, gdbarch_fp0_regnum (gdbarch) + 8), |
| 1852 | (long) get_frame_register_unsigned |
| 1853 | (frame, gdbarch_fp0_regnum (gdbarch) + 9), |
| 1854 | (long) get_frame_register_unsigned |
| 1855 | (frame, gdbarch_fp0_regnum (gdbarch) + 10), |
| 1856 | (long) get_frame_register_unsigned |
| 1857 | (frame, gdbarch_fp0_regnum (gdbarch) + 11), |
| 1858 | (long) get_frame_register_unsigned |
| 1859 | (frame, gdbarch_fp0_regnum (gdbarch) + 12), |
| 1860 | (long) get_frame_register_unsigned |
| 1861 | (frame, gdbarch_fp0_regnum (gdbarch) + 13), |
| 1862 | (long) get_frame_register_unsigned |
| 1863 | (frame, gdbarch_fp0_regnum (gdbarch) + 14), |
| 1864 | (long) get_frame_register_unsigned |
| 1865 | (frame, gdbarch_fp0_regnum (gdbarch) + 15)); |
| 1866 | } |
| 1867 | |
| 1868 | static void |
| 1869 | sh3_dsp_show_regs (struct frame_info *frame) |
| 1870 | { |
| 1871 | printf_filtered |
| 1872 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1873 | paddr (get_frame_register_unsigned (frame, |
| 1874 | gdbarch_pc_regnum |
| 1875 | (get_frame_arch (frame)))), |
| 1876 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1877 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1878 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1879 | |
| 1880 | printf_filtered |
| 1881 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1882 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1883 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1884 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1885 | |
| 1886 | printf_filtered |
| 1887 | (" SSR %08lx SPC %08lx DSR %08lx\n", |
| 1888 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1889 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1890 | (long) get_frame_register_unsigned (frame, DSR_REGNUM)); |
| 1891 | |
| 1892 | printf_filtered |
| 1893 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1894 | (long) get_frame_register_unsigned (frame, 0), |
| 1895 | (long) get_frame_register_unsigned (frame, 1), |
| 1896 | (long) get_frame_register_unsigned (frame, 2), |
| 1897 | (long) get_frame_register_unsigned (frame, 3), |
| 1898 | (long) get_frame_register_unsigned (frame, 4), |
| 1899 | (long) get_frame_register_unsigned (frame, 5), |
| 1900 | (long) get_frame_register_unsigned (frame, 6), |
| 1901 | (long) get_frame_register_unsigned (frame, 7)); |
| 1902 | printf_filtered |
| 1903 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1904 | (long) get_frame_register_unsigned (frame, 8), |
| 1905 | (long) get_frame_register_unsigned (frame, 9), |
| 1906 | (long) get_frame_register_unsigned (frame, 10), |
| 1907 | (long) get_frame_register_unsigned (frame, 11), |
| 1908 | (long) get_frame_register_unsigned (frame, 12), |
| 1909 | (long) get_frame_register_unsigned (frame, 13), |
| 1910 | (long) get_frame_register_unsigned (frame, 14), |
| 1911 | (long) get_frame_register_unsigned (frame, 15)); |
| 1912 | |
| 1913 | printf_filtered |
| 1914 | ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", |
| 1915 | (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff, |
| 1916 | (long) get_frame_register_unsigned (frame, A0_REGNUM), |
| 1917 | (long) get_frame_register_unsigned (frame, M0_REGNUM), |
| 1918 | (long) get_frame_register_unsigned (frame, X0_REGNUM), |
| 1919 | (long) get_frame_register_unsigned (frame, Y0_REGNUM), |
| 1920 | (long) get_frame_register_unsigned (frame, RS_REGNUM), |
| 1921 | (long) get_frame_register_unsigned (frame, MOD_REGNUM)); |
| 1922 | printf_filtered |
| 1923 | ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", |
| 1924 | (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff, |
| 1925 | (long) get_frame_register_unsigned (frame, A1_REGNUM), |
| 1926 | (long) get_frame_register_unsigned (frame, M1_REGNUM), |
| 1927 | (long) get_frame_register_unsigned (frame, X1_REGNUM), |
| 1928 | (long) get_frame_register_unsigned (frame, Y1_REGNUM), |
| 1929 | (long) get_frame_register_unsigned (frame, RE_REGNUM)); |
| 1930 | } |
| 1931 | |
| 1932 | static void |
| 1933 | sh4_show_regs (struct frame_info *frame) |
| 1934 | { |
| 1935 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1936 | int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000; |
| 1937 | |
| 1938 | printf_filtered |
| 1939 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 1940 | paddr (get_frame_register_unsigned (frame, |
| 1941 | gdbarch_pc_regnum (gdbarch))), |
| 1942 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 1943 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 1944 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 1945 | |
| 1946 | printf_filtered |
| 1947 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 1948 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 1949 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 1950 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 1951 | printf_filtered |
| 1952 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 1953 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 1954 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 1955 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 1956 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 1957 | |
| 1958 | printf_filtered |
| 1959 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1960 | (long) get_frame_register_unsigned (frame, 0), |
| 1961 | (long) get_frame_register_unsigned (frame, 1), |
| 1962 | (long) get_frame_register_unsigned (frame, 2), |
| 1963 | (long) get_frame_register_unsigned (frame, 3), |
| 1964 | (long) get_frame_register_unsigned (frame, 4), |
| 1965 | (long) get_frame_register_unsigned (frame, 5), |
| 1966 | (long) get_frame_register_unsigned (frame, 6), |
| 1967 | (long) get_frame_register_unsigned (frame, 7)); |
| 1968 | printf_filtered |
| 1969 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1970 | (long) get_frame_register_unsigned (frame, 8), |
| 1971 | (long) get_frame_register_unsigned (frame, 9), |
| 1972 | (long) get_frame_register_unsigned (frame, 10), |
| 1973 | (long) get_frame_register_unsigned (frame, 11), |
| 1974 | (long) get_frame_register_unsigned (frame, 12), |
| 1975 | (long) get_frame_register_unsigned (frame, 13), |
| 1976 | (long) get_frame_register_unsigned (frame, 14), |
| 1977 | (long) get_frame_register_unsigned (frame, 15)); |
| 1978 | |
| 1979 | printf_filtered |
| 1980 | (pr ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" |
| 1981 | : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 1982 | (long) get_frame_register_unsigned |
| 1983 | (frame, gdbarch_fp0_regnum (gdbarch) + 0), |
| 1984 | (long) get_frame_register_unsigned |
| 1985 | (frame, gdbarch_fp0_regnum (gdbarch) + 1), |
| 1986 | (long) get_frame_register_unsigned |
| 1987 | (frame, gdbarch_fp0_regnum (gdbarch) + 2), |
| 1988 | (long) get_frame_register_unsigned |
| 1989 | (frame, gdbarch_fp0_regnum (gdbarch) + 3), |
| 1990 | (long) get_frame_register_unsigned |
| 1991 | (frame, gdbarch_fp0_regnum (gdbarch) + 4), |
| 1992 | (long) get_frame_register_unsigned |
| 1993 | (frame, gdbarch_fp0_regnum (gdbarch) + 5), |
| 1994 | (long) get_frame_register_unsigned |
| 1995 | (frame, gdbarch_fp0_regnum (gdbarch) + 6), |
| 1996 | (long) get_frame_register_unsigned |
| 1997 | (frame, gdbarch_fp0_regnum (gdbarch) + 7)); |
| 1998 | printf_filtered |
| 1999 | (pr ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" |
| 2000 | : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 2001 | (long) get_frame_register_unsigned |
| 2002 | (frame, gdbarch_fp0_regnum (gdbarch) + 8), |
| 2003 | (long) get_frame_register_unsigned |
| 2004 | (frame, gdbarch_fp0_regnum (gdbarch) + 9), |
| 2005 | (long) get_frame_register_unsigned |
| 2006 | (frame, gdbarch_fp0_regnum (gdbarch) + 10), |
| 2007 | (long) get_frame_register_unsigned |
| 2008 | (frame, gdbarch_fp0_regnum (gdbarch) + 11), |
| 2009 | (long) get_frame_register_unsigned |
| 2010 | (frame, gdbarch_fp0_regnum (gdbarch) + 12), |
| 2011 | (long) get_frame_register_unsigned |
| 2012 | (frame, gdbarch_fp0_regnum (gdbarch) + 13), |
| 2013 | (long) get_frame_register_unsigned |
| 2014 | (frame, gdbarch_fp0_regnum (gdbarch) + 14), |
| 2015 | (long) get_frame_register_unsigned |
| 2016 | (frame, gdbarch_fp0_regnum (gdbarch) + 15)); |
| 2017 | } |
| 2018 | |
| 2019 | static void |
| 2020 | sh4_nofpu_show_regs (struct frame_info *frame) |
| 2021 | { |
| 2022 | printf_filtered |
| 2023 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 2024 | paddr (get_frame_register_unsigned (frame, |
| 2025 | gdbarch_pc_regnum |
| 2026 | (get_frame_arch (frame)))), |
| 2027 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 2028 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 2029 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 2030 | |
| 2031 | printf_filtered |
| 2032 | (" GBR %08lx VBR %08lx MACL %08lx\n", |
| 2033 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 2034 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 2035 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 2036 | printf_filtered |
| 2037 | (" SSR %08lx SPC %08lx FPUL %08lx FPSCR %08lx\n", |
| 2038 | (long) get_frame_register_unsigned (frame, SSR_REGNUM), |
| 2039 | (long) get_frame_register_unsigned (frame, SPC_REGNUM), |
| 2040 | (long) get_frame_register_unsigned (frame, FPUL_REGNUM), |
| 2041 | (long) get_frame_register_unsigned (frame, FPSCR_REGNUM)); |
| 2042 | |
| 2043 | printf_filtered |
| 2044 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 2045 | (long) get_frame_register_unsigned (frame, 0), |
| 2046 | (long) get_frame_register_unsigned (frame, 1), |
| 2047 | (long) get_frame_register_unsigned (frame, 2), |
| 2048 | (long) get_frame_register_unsigned (frame, 3), |
| 2049 | (long) get_frame_register_unsigned (frame, 4), |
| 2050 | (long) get_frame_register_unsigned (frame, 5), |
| 2051 | (long) get_frame_register_unsigned (frame, 6), |
| 2052 | (long) get_frame_register_unsigned (frame, 7)); |
| 2053 | printf_filtered |
| 2054 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 2055 | (long) get_frame_register_unsigned (frame, 8), |
| 2056 | (long) get_frame_register_unsigned (frame, 9), |
| 2057 | (long) get_frame_register_unsigned (frame, 10), |
| 2058 | (long) get_frame_register_unsigned (frame, 11), |
| 2059 | (long) get_frame_register_unsigned (frame, 12), |
| 2060 | (long) get_frame_register_unsigned (frame, 13), |
| 2061 | (long) get_frame_register_unsigned (frame, 14), |
| 2062 | (long) get_frame_register_unsigned (frame, 15)); |
| 2063 | } |
| 2064 | |
| 2065 | static void |
| 2066 | sh_dsp_show_regs (struct frame_info *frame) |
| 2067 | { |
| 2068 | printf_filtered |
| 2069 | (" PC %s SR %08lx PR %08lx MACH %08lx\n", |
| 2070 | paddr (get_frame_register_unsigned (frame, |
| 2071 | gdbarch_pc_regnum |
| 2072 | (get_frame_arch (frame)))), |
| 2073 | (long) get_frame_register_unsigned (frame, SR_REGNUM), |
| 2074 | (long) get_frame_register_unsigned (frame, PR_REGNUM), |
| 2075 | (long) get_frame_register_unsigned (frame, MACH_REGNUM)); |
| 2076 | |
| 2077 | printf_filtered |
| 2078 | (" GBR %08lx VBR %08lx DSR %08lx MACL %08lx\n", |
| 2079 | (long) get_frame_register_unsigned (frame, GBR_REGNUM), |
| 2080 | (long) get_frame_register_unsigned (frame, VBR_REGNUM), |
| 2081 | (long) get_frame_register_unsigned (frame, DSR_REGNUM), |
| 2082 | (long) get_frame_register_unsigned (frame, MACL_REGNUM)); |
| 2083 | |
| 2084 | printf_filtered |
| 2085 | ("R0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 2086 | (long) get_frame_register_unsigned (frame, 0), |
| 2087 | (long) get_frame_register_unsigned (frame, 1), |
| 2088 | (long) get_frame_register_unsigned (frame, 2), |
| 2089 | (long) get_frame_register_unsigned (frame, 3), |
| 2090 | (long) get_frame_register_unsigned (frame, 4), |
| 2091 | (long) get_frame_register_unsigned (frame, 5), |
| 2092 | (long) get_frame_register_unsigned (frame, 6), |
| 2093 | (long) get_frame_register_unsigned (frame, 7)); |
| 2094 | printf_filtered |
| 2095 | ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", |
| 2096 | (long) get_frame_register_unsigned (frame, 8), |
| 2097 | (long) get_frame_register_unsigned (frame, 9), |
| 2098 | (long) get_frame_register_unsigned (frame, 10), |
| 2099 | (long) get_frame_register_unsigned (frame, 11), |
| 2100 | (long) get_frame_register_unsigned (frame, 12), |
| 2101 | (long) get_frame_register_unsigned (frame, 13), |
| 2102 | (long) get_frame_register_unsigned (frame, 14), |
| 2103 | (long) get_frame_register_unsigned (frame, 15)); |
| 2104 | |
| 2105 | printf_filtered |
| 2106 | ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", |
| 2107 | (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff, |
| 2108 | (long) get_frame_register_unsigned (frame, A0_REGNUM), |
| 2109 | (long) get_frame_register_unsigned (frame, M0_REGNUM), |
| 2110 | (long) get_frame_register_unsigned (frame, X0_REGNUM), |
| 2111 | (long) get_frame_register_unsigned (frame, Y0_REGNUM), |
| 2112 | (long) get_frame_register_unsigned (frame, RS_REGNUM), |
| 2113 | (long) get_frame_register_unsigned (frame, MOD_REGNUM)); |
| 2114 | printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", |
| 2115 | (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff, |
| 2116 | (long) get_frame_register_unsigned (frame, A1_REGNUM), |
| 2117 | (long) get_frame_register_unsigned (frame, M1_REGNUM), |
| 2118 | (long) get_frame_register_unsigned (frame, X1_REGNUM), |
| 2119 | (long) get_frame_register_unsigned (frame, Y1_REGNUM), |
| 2120 | (long) get_frame_register_unsigned (frame, RE_REGNUM)); |
| 2121 | } |
| 2122 | |
| 2123 | static void |
| 2124 | sh_show_regs_command (char *args, int from_tty) |
| 2125 | { |
| 2126 | if (sh_show_regs) |
| 2127 | (*sh_show_regs) (get_current_frame ()); |
| 2128 | } |
| 2129 | |
| 2130 | static struct type * |
| 2131 | sh_sh2a_register_type (struct gdbarch *gdbarch, int reg_nr) |
| 2132 | { |
| 2133 | if ((reg_nr >= gdbarch_fp0_regnum (gdbarch) |
| 2134 | && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM)) |
| 2135 | return builtin_type_float; |
| 2136 | else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM) |
| 2137 | return builtin_type_double; |
| 2138 | else |
| 2139 | return builtin_type_int; |
| 2140 | } |
| 2141 | |
| 2142 | /* Return the GDB type object for the "standard" data type |
| 2143 | of data in register N. */ |
| 2144 | static struct type * |
| 2145 | sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr) |
| 2146 | { |
| 2147 | if ((reg_nr >= gdbarch_fp0_regnum (gdbarch) |
| 2148 | && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM)) |
| 2149 | return builtin_type_float; |
| 2150 | else |
| 2151 | return builtin_type_int; |
| 2152 | } |
| 2153 | |
| 2154 | static struct type * |
| 2155 | sh_sh4_build_float_register_type (int high) |
| 2156 | { |
| 2157 | struct type *temp; |
| 2158 | |
| 2159 | temp = create_range_type (NULL, builtin_type_int, 0, high); |
| 2160 | return create_array_type (NULL, builtin_type_float, temp); |
| 2161 | } |
| 2162 | |
| 2163 | static struct type * |
| 2164 | sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr) |
| 2165 | { |
| 2166 | if ((reg_nr >= gdbarch_fp0_regnum (gdbarch) |
| 2167 | && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM)) |
| 2168 | return builtin_type_float; |
| 2169 | else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM) |
| 2170 | return builtin_type_double; |
| 2171 | else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM) |
| 2172 | return sh_sh4_build_float_register_type (3); |
| 2173 | else |
| 2174 | return builtin_type_int; |
| 2175 | } |
| 2176 | |
| 2177 | static struct type * |
| 2178 | sh_default_register_type (struct gdbarch *gdbarch, int reg_nr) |
| 2179 | { |
| 2180 | return builtin_type_int; |
| 2181 | } |
| 2182 | |
| 2183 | /* Is a register in a reggroup? |
| 2184 | The default code in reggroup.c doesn't identify system registers, some |
| 2185 | float registers or any of the vector registers. |
| 2186 | TODO: sh2a and dsp registers. */ |
| 2187 | int |
| 2188 | sh_register_reggroup_p (struct gdbarch *gdbarch, int regnum, |
| 2189 | struct reggroup *reggroup) |
| 2190 | { |
| 2191 | if (gdbarch_register_name (gdbarch, regnum) == NULL |
| 2192 | || *gdbarch_register_name (gdbarch, regnum) == '\0') |
| 2193 | return 0; |
| 2194 | |
| 2195 | if (reggroup == float_reggroup |
| 2196 | && (regnum == FPUL_REGNUM |
| 2197 | || regnum == FPSCR_REGNUM)) |
| 2198 | return 1; |
| 2199 | |
| 2200 | if (regnum >= FV0_REGNUM && regnum <= FV_LAST_REGNUM) |
| 2201 | { |
| 2202 | if (reggroup == vector_reggroup || reggroup == float_reggroup) |
| 2203 | return 1; |
| 2204 | if (reggroup == general_reggroup) |
| 2205 | return 0; |
| 2206 | } |
| 2207 | |
| 2208 | if (regnum == VBR_REGNUM |
| 2209 | || regnum == SR_REGNUM |
| 2210 | || regnum == FPSCR_REGNUM |
| 2211 | || regnum == SSR_REGNUM |
| 2212 | || regnum == SPC_REGNUM) |
| 2213 | { |
| 2214 | if (reggroup == system_reggroup) |
| 2215 | return 1; |
| 2216 | if (reggroup == general_reggroup) |
| 2217 | return 0; |
| 2218 | } |
| 2219 | |
| 2220 | /* The default code can cope with any other registers. */ |
| 2221 | return default_register_reggroup_p (gdbarch, regnum, reggroup); |
| 2222 | } |
| 2223 | |
| 2224 | /* On the sh4, the DRi pseudo registers are problematic if the target |
| 2225 | is little endian. When the user writes one of those registers, for |
| 2226 | instance with 'ser var $dr0=1', we want the double to be stored |
| 2227 | like this: |
| 2228 | fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f |
| 2229 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 |
| 2230 | |
| 2231 | This corresponds to little endian byte order & big endian word |
| 2232 | order. However if we let gdb write the register w/o conversion, it |
| 2233 | will write fr0 and fr1 this way: |
| 2234 | fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 |
| 2235 | fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f |
| 2236 | because it will consider fr0 and fr1 as a single LE stretch of memory. |
| 2237 | |
| 2238 | To achieve what we want we must force gdb to store things in |
| 2239 | floatformat_ieee_double_littlebyte_bigword (which is defined in |
| 2240 | include/floatformat.h and libiberty/floatformat.c. |
| 2241 | |
| 2242 | In case the target is big endian, there is no problem, the |
| 2243 | raw bytes will look like: |
| 2244 | fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 |
| 2245 | fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 |
| 2246 | |
| 2247 | The other pseudo registers (the FVs) also don't pose a problem |
| 2248 | because they are stored as 4 individual FP elements. */ |
| 2249 | |
| 2250 | static void |
| 2251 | sh_register_convert_to_virtual (int regnum, struct type *type, |
| 2252 | char *from, char *to) |
| 2253 | { |
| 2254 | if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM) |
| 2255 | { |
| 2256 | DOUBLEST val; |
| 2257 | floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, |
| 2258 | from, &val); |
| 2259 | store_typed_floating (to, type, val); |
| 2260 | } |
| 2261 | else |
| 2262 | error |
| 2263 | ("sh_register_convert_to_virtual called with non DR register number"); |
| 2264 | } |
| 2265 | |
| 2266 | static void |
| 2267 | sh_register_convert_to_raw (struct type *type, int regnum, |
| 2268 | const void *from, void *to) |
| 2269 | { |
| 2270 | if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM) |
| 2271 | { |
| 2272 | DOUBLEST val = extract_typed_floating (from, type); |
| 2273 | floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, |
| 2274 | &val, to); |
| 2275 | } |
| 2276 | else |
| 2277 | error (_("sh_register_convert_to_raw called with non DR register number")); |
| 2278 | } |
| 2279 | |
| 2280 | /* For vectors of 4 floating point registers. */ |
| 2281 | static int |
| 2282 | fv_reg_base_num (struct gdbarch *gdbarch, int fv_regnum) |
| 2283 | { |
| 2284 | int fp_regnum; |
| 2285 | |
| 2286 | fp_regnum = gdbarch_fp0_regnum (gdbarch) |
| 2287 | + (fv_regnum - FV0_REGNUM) * 4; |
| 2288 | return fp_regnum; |
| 2289 | } |
| 2290 | |
| 2291 | /* For double precision floating point registers, i.e 2 fp regs.*/ |
| 2292 | static int |
| 2293 | dr_reg_base_num (struct gdbarch *gdbarch, int dr_regnum) |
| 2294 | { |
| 2295 | int fp_regnum; |
| 2296 | |
| 2297 | fp_regnum = gdbarch_fp0_regnum (gdbarch) |
| 2298 | + (dr_regnum - DR0_REGNUM) * 2; |
| 2299 | return fp_regnum; |
| 2300 | } |
| 2301 | |
| 2302 | static void |
| 2303 | sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2304 | int reg_nr, gdb_byte *buffer) |
| 2305 | { |
| 2306 | int base_regnum, portion; |
| 2307 | char temp_buffer[MAX_REGISTER_SIZE]; |
| 2308 | |
| 2309 | if (reg_nr == PSEUDO_BANK_REGNUM) |
| 2310 | regcache_raw_read (regcache, BANK_REGNUM, buffer); |
| 2311 | else |
| 2312 | if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM) |
| 2313 | { |
| 2314 | base_regnum = dr_reg_base_num (gdbarch, reg_nr); |
| 2315 | |
| 2316 | /* Build the value in the provided buffer. */ |
| 2317 | /* Read the real regs for which this one is an alias. */ |
| 2318 | for (portion = 0; portion < 2; portion++) |
| 2319 | regcache_raw_read (regcache, base_regnum + portion, |
| 2320 | (temp_buffer |
| 2321 | + register_size (gdbarch, |
| 2322 | base_regnum) * portion)); |
| 2323 | /* We must pay attention to the endiannes. */ |
| 2324 | sh_register_convert_to_virtual (reg_nr, |
| 2325 | register_type (gdbarch, reg_nr), |
| 2326 | temp_buffer, buffer); |
| 2327 | } |
| 2328 | else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM) |
| 2329 | { |
| 2330 | base_regnum = fv_reg_base_num (gdbarch, reg_nr); |
| 2331 | |
| 2332 | /* Read the real regs for which this one is an alias. */ |
| 2333 | for (portion = 0; portion < 4; portion++) |
| 2334 | regcache_raw_read (regcache, base_regnum + portion, |
| 2335 | ((char *) buffer |
| 2336 | + register_size (gdbarch, |
| 2337 | base_regnum) * portion)); |
| 2338 | } |
| 2339 | } |
| 2340 | |
| 2341 | static void |
| 2342 | sh_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2343 | int reg_nr, const gdb_byte *buffer) |
| 2344 | { |
| 2345 | int base_regnum, portion; |
| 2346 | char temp_buffer[MAX_REGISTER_SIZE]; |
| 2347 | |
| 2348 | if (reg_nr == PSEUDO_BANK_REGNUM) |
| 2349 | { |
| 2350 | /* When the bank register is written to, the whole register bank |
| 2351 | is switched and all values in the bank registers must be read |
| 2352 | from the target/sim again. We're just invalidating the regcache |
| 2353 | so that a re-read happens next time it's necessary. */ |
| 2354 | int bregnum; |
| 2355 | |
| 2356 | regcache_raw_write (regcache, BANK_REGNUM, buffer); |
| 2357 | for (bregnum = R0_BANK0_REGNUM; bregnum < MACLB_REGNUM; ++bregnum) |
| 2358 | regcache_invalidate (regcache, bregnum); |
| 2359 | } |
| 2360 | else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM) |
| 2361 | { |
| 2362 | base_regnum = dr_reg_base_num (gdbarch, reg_nr); |
| 2363 | |
| 2364 | /* We must pay attention to the endiannes. */ |
| 2365 | sh_register_convert_to_raw (register_type (gdbarch, reg_nr), |
| 2366 | reg_nr, buffer, temp_buffer); |
| 2367 | |
| 2368 | /* Write the real regs for which this one is an alias. */ |
| 2369 | for (portion = 0; portion < 2; portion++) |
| 2370 | regcache_raw_write (regcache, base_regnum + portion, |
| 2371 | (temp_buffer |
| 2372 | + register_size (gdbarch, |
| 2373 | base_regnum) * portion)); |
| 2374 | } |
| 2375 | else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM) |
| 2376 | { |
| 2377 | base_regnum = fv_reg_base_num (gdbarch, reg_nr); |
| 2378 | |
| 2379 | /* Write the real regs for which this one is an alias. */ |
| 2380 | for (portion = 0; portion < 4; portion++) |
| 2381 | regcache_raw_write (regcache, base_regnum + portion, |
| 2382 | ((char *) buffer |
| 2383 | + register_size (gdbarch, |
| 2384 | base_regnum) * portion)); |
| 2385 | } |
| 2386 | } |
| 2387 | |
| 2388 | static int |
| 2389 | sh_dsp_register_sim_regno (struct gdbarch *gdbarch, int nr) |
| 2390 | { |
| 2391 | if (legacy_register_sim_regno (gdbarch, nr) < 0) |
| 2392 | return legacy_register_sim_regno (gdbarch, nr); |
| 2393 | if (nr >= DSR_REGNUM && nr <= Y1_REGNUM) |
| 2394 | return nr - DSR_REGNUM + SIM_SH_DSR_REGNUM; |
| 2395 | if (nr == MOD_REGNUM) |
| 2396 | return SIM_SH_MOD_REGNUM; |
| 2397 | if (nr == RS_REGNUM) |
| 2398 | return SIM_SH_RS_REGNUM; |
| 2399 | if (nr == RE_REGNUM) |
| 2400 | return SIM_SH_RE_REGNUM; |
| 2401 | if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM) |
| 2402 | return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM; |
| 2403 | return nr; |
| 2404 | } |
| 2405 | |
| 2406 | static int |
| 2407 | sh_sh2a_register_sim_regno (struct gdbarch *gdbarch, int nr) |
| 2408 | { |
| 2409 | switch (nr) |
| 2410 | { |
| 2411 | case TBR_REGNUM: |
| 2412 | return SIM_SH_TBR_REGNUM; |
| 2413 | case IBNR_REGNUM: |
| 2414 | return SIM_SH_IBNR_REGNUM; |
| 2415 | case IBCR_REGNUM: |
| 2416 | return SIM_SH_IBCR_REGNUM; |
| 2417 | case BANK_REGNUM: |
| 2418 | return SIM_SH_BANK_REGNUM; |
| 2419 | case MACLB_REGNUM: |
| 2420 | return SIM_SH_BANK_MACL_REGNUM; |
| 2421 | case GBRB_REGNUM: |
| 2422 | return SIM_SH_BANK_GBR_REGNUM; |
| 2423 | case PRB_REGNUM: |
| 2424 | return SIM_SH_BANK_PR_REGNUM; |
| 2425 | case IVNB_REGNUM: |
| 2426 | return SIM_SH_BANK_IVN_REGNUM; |
| 2427 | case MACHB_REGNUM: |
| 2428 | return SIM_SH_BANK_MACH_REGNUM; |
| 2429 | default: |
| 2430 | break; |
| 2431 | } |
| 2432 | return legacy_register_sim_regno (gdbarch, nr); |
| 2433 | } |
| 2434 | |
| 2435 | /* Set up the register unwinding such that call-clobbered registers are |
| 2436 | not displayed in frames >0 because the true value is not certain. |
| 2437 | The 'undefined' registers will show up as 'not available' unless the |
| 2438 | CFI says otherwise. |
| 2439 | |
| 2440 | This function is currently set up for SH4 and compatible only. */ |
| 2441 | |
| 2442 | static void |
| 2443 | sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, |
| 2444 | struct dwarf2_frame_state_reg *reg, |
| 2445 | struct frame_info *this_frame) |
| 2446 | { |
| 2447 | /* Mark the PC as the destination for the return address. */ |
| 2448 | if (regnum == gdbarch_pc_regnum (gdbarch)) |
| 2449 | reg->how = DWARF2_FRAME_REG_RA; |
| 2450 | |
| 2451 | /* Mark the stack pointer as the call frame address. */ |
| 2452 | else if (regnum == gdbarch_sp_regnum (gdbarch)) |
| 2453 | reg->how = DWARF2_FRAME_REG_CFA; |
| 2454 | |
| 2455 | /* The above was taken from the default init_reg in dwarf2-frame.c |
| 2456 | while the below is SH specific. */ |
| 2457 | |
| 2458 | /* Caller save registers. */ |
| 2459 | else if ((regnum >= R0_REGNUM && regnum <= R0_REGNUM+7) |
| 2460 | || (regnum >= FR0_REGNUM && regnum <= FR0_REGNUM+11) |
| 2461 | || (regnum >= DR0_REGNUM && regnum <= DR0_REGNUM+5) |
| 2462 | || (regnum >= FV0_REGNUM && regnum <= FV0_REGNUM+2) |
| 2463 | || (regnum == MACH_REGNUM) |
| 2464 | || (regnum == MACL_REGNUM) |
| 2465 | || (regnum == FPUL_REGNUM) |
| 2466 | || (regnum == SR_REGNUM)) |
| 2467 | reg->how = DWARF2_FRAME_REG_UNDEFINED; |
| 2468 | |
| 2469 | /* Callee save registers. */ |
| 2470 | else if ((regnum >= R0_REGNUM+8 && regnum <= R0_REGNUM+15) |
| 2471 | || (regnum >= FR0_REGNUM+12 && regnum <= FR0_REGNUM+15) |
| 2472 | || (regnum >= DR0_REGNUM+6 && regnum <= DR0_REGNUM+8) |
| 2473 | || (regnum == FV0_REGNUM+3)) |
| 2474 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; |
| 2475 | |
| 2476 | /* Other registers. These are not in the ABI and may or may not |
| 2477 | mean anything in frames >0 so don't show them. */ |
| 2478 | else if ((regnum >= R0_BANK0_REGNUM && regnum <= R0_BANK0_REGNUM+15) |
| 2479 | || (regnum == GBR_REGNUM) |
| 2480 | || (regnum == VBR_REGNUM) |
| 2481 | || (regnum == FPSCR_REGNUM) |
| 2482 | || (regnum == SSR_REGNUM) |
| 2483 | || (regnum == SPC_REGNUM)) |
| 2484 | reg->how = DWARF2_FRAME_REG_UNDEFINED; |
| 2485 | } |
| 2486 | |
| 2487 | static struct sh_frame_cache * |
| 2488 | sh_alloc_frame_cache (void) |
| 2489 | { |
| 2490 | struct sh_frame_cache *cache; |
| 2491 | int i; |
| 2492 | |
| 2493 | cache = FRAME_OBSTACK_ZALLOC (struct sh_frame_cache); |
| 2494 | |
| 2495 | /* Base address. */ |
| 2496 | cache->base = 0; |
| 2497 | cache->saved_sp = 0; |
| 2498 | cache->sp_offset = 0; |
| 2499 | cache->pc = 0; |
| 2500 | |
| 2501 | /* Frameless until proven otherwise. */ |
| 2502 | cache->uses_fp = 0; |
| 2503 | |
| 2504 | /* Saved registers. We initialize these to -1 since zero is a valid |
| 2505 | offset (that's where fp is supposed to be stored). */ |
| 2506 | for (i = 0; i < SH_NUM_REGS; i++) |
| 2507 | { |
| 2508 | cache->saved_regs[i] = -1; |
| 2509 | } |
| 2510 | |
| 2511 | return cache; |
| 2512 | } |
| 2513 | |
| 2514 | static struct sh_frame_cache * |
| 2515 | sh_frame_cache (struct frame_info *next_frame, void **this_cache) |
| 2516 | { |
| 2517 | struct sh_frame_cache *cache; |
| 2518 | CORE_ADDR current_pc; |
| 2519 | int i; |
| 2520 | |
| 2521 | if (*this_cache) |
| 2522 | return *this_cache; |
| 2523 | |
| 2524 | cache = sh_alloc_frame_cache (); |
| 2525 | *this_cache = cache; |
| 2526 | |
| 2527 | /* In principle, for normal frames, fp holds the frame pointer, |
| 2528 | which holds the base address for the current stack frame. |
| 2529 | However, for functions that don't need it, the frame pointer is |
| 2530 | optional. For these "frameless" functions the frame pointer is |
| 2531 | actually the frame pointer of the calling frame. */ |
| 2532 | cache->base = frame_unwind_register_unsigned (next_frame, FP_REGNUM); |
| 2533 | if (cache->base == 0) |
| 2534 | return cache; |
| 2535 | |
| 2536 | cache->pc = frame_func_unwind (next_frame, NORMAL_FRAME); |
| 2537 | current_pc = frame_pc_unwind (next_frame); |
| 2538 | if (cache->pc != 0) |
| 2539 | { |
| 2540 | ULONGEST fpscr; |
| 2541 | fpscr = frame_unwind_register_unsigned (next_frame, FPSCR_REGNUM); |
| 2542 | sh_analyze_prologue (cache->pc, current_pc, cache, fpscr); |
| 2543 | } |
| 2544 | |
| 2545 | if (!cache->uses_fp) |
| 2546 | { |
| 2547 | /* We didn't find a valid frame, which means that CACHE->base |
| 2548 | currently holds the frame pointer for our calling frame. If |
| 2549 | we're at the start of a function, or somewhere half-way its |
| 2550 | prologue, the function's frame probably hasn't been fully |
| 2551 | setup yet. Try to reconstruct the base address for the stack |
| 2552 | frame by looking at the stack pointer. For truly "frameless" |
| 2553 | functions this might work too. */ |
| 2554 | cache->base = frame_unwind_register_unsigned |
| 2555 | (next_frame, |
| 2556 | gdbarch_sp_regnum (get_frame_arch (next_frame))); |
| 2557 | } |
| 2558 | |
| 2559 | /* Now that we have the base address for the stack frame we can |
| 2560 | calculate the value of sp in the calling frame. */ |
| 2561 | cache->saved_sp = cache->base + cache->sp_offset; |
| 2562 | |
| 2563 | /* Adjust all the saved registers such that they contain addresses |
| 2564 | instead of offsets. */ |
| 2565 | for (i = 0; i < SH_NUM_REGS; i++) |
| 2566 | if (cache->saved_regs[i] != -1) |
| 2567 | cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i] - 4; |
| 2568 | |
| 2569 | return cache; |
| 2570 | } |
| 2571 | |
| 2572 | static void |
| 2573 | sh_frame_prev_register (struct frame_info *next_frame, void **this_cache, |
| 2574 | int regnum, int *optimizedp, |
| 2575 | enum lval_type *lvalp, CORE_ADDR *addrp, |
| 2576 | int *realnump, gdb_byte *valuep) |
| 2577 | { |
| 2578 | struct gdbarch *gdbarch = get_frame_arch (next_frame); |
| 2579 | struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache); |
| 2580 | |
| 2581 | gdb_assert (regnum >= 0); |
| 2582 | |
| 2583 | if (regnum == gdbarch_sp_regnum (gdbarch) && cache->saved_sp) |
| 2584 | { |
| 2585 | *optimizedp = 0; |
| 2586 | *lvalp = not_lval; |
| 2587 | *addrp = 0; |
| 2588 | *realnump = -1; |
| 2589 | if (valuep) |
| 2590 | { |
| 2591 | /* Store the value. */ |
| 2592 | store_unsigned_integer (valuep, 4, cache->saved_sp); |
| 2593 | } |
| 2594 | return; |
| 2595 | } |
| 2596 | |
| 2597 | /* The PC of the previous frame is stored in the PR register of |
| 2598 | the current frame. Frob regnum so that we pull the value from |
| 2599 | the correct place. */ |
| 2600 | if (regnum == gdbarch_pc_regnum (gdbarch)) |
| 2601 | regnum = PR_REGNUM; |
| 2602 | |
| 2603 | if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1) |
| 2604 | { |
| 2605 | *optimizedp = 0; |
| 2606 | *lvalp = lval_memory; |
| 2607 | *addrp = cache->saved_regs[regnum]; |
| 2608 | *realnump = -1; |
| 2609 | if (valuep) |
| 2610 | { |
| 2611 | /* Read the value in from memory. */ |
| 2612 | read_memory (*addrp, valuep, |
| 2613 | register_size (gdbarch, regnum)); |
| 2614 | } |
| 2615 | return; |
| 2616 | } |
| 2617 | |
| 2618 | *optimizedp = 0; |
| 2619 | *lvalp = lval_register; |
| 2620 | *addrp = 0; |
| 2621 | *realnump = regnum; |
| 2622 | if (valuep) |
| 2623 | frame_unwind_register (next_frame, (*realnump), valuep); |
| 2624 | } |
| 2625 | |
| 2626 | static void |
| 2627 | sh_frame_this_id (struct frame_info *next_frame, void **this_cache, |
| 2628 | struct frame_id *this_id) |
| 2629 | { |
| 2630 | struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache); |
| 2631 | |
| 2632 | /* This marks the outermost frame. */ |
| 2633 | if (cache->base == 0) |
| 2634 | return; |
| 2635 | |
| 2636 | *this_id = frame_id_build (cache->saved_sp, cache->pc); |
| 2637 | } |
| 2638 | |
| 2639 | static const struct frame_unwind sh_frame_unwind = { |
| 2640 | NORMAL_FRAME, |
| 2641 | sh_frame_this_id, |
| 2642 | sh_frame_prev_register |
| 2643 | }; |
| 2644 | |
| 2645 | static const struct frame_unwind * |
| 2646 | sh_frame_sniffer (struct frame_info *next_frame) |
| 2647 | { |
| 2648 | return &sh_frame_unwind; |
| 2649 | } |
| 2650 | |
| 2651 | static CORE_ADDR |
| 2652 | sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 2653 | { |
| 2654 | return frame_unwind_register_unsigned (next_frame, |
| 2655 | gdbarch_sp_regnum (gdbarch)); |
| 2656 | } |
| 2657 | |
| 2658 | static CORE_ADDR |
| 2659 | sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 2660 | { |
| 2661 | return frame_unwind_register_unsigned (next_frame, |
| 2662 | gdbarch_pc_regnum (gdbarch)); |
| 2663 | } |
| 2664 | |
| 2665 | static struct frame_id |
| 2666 | sh_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 2667 | { |
| 2668 | return frame_id_build (sh_unwind_sp (gdbarch, next_frame), |
| 2669 | frame_pc_unwind (next_frame)); |
| 2670 | } |
| 2671 | |
| 2672 | static CORE_ADDR |
| 2673 | sh_frame_base_address (struct frame_info *next_frame, void **this_cache) |
| 2674 | { |
| 2675 | struct sh_frame_cache *cache = sh_frame_cache (next_frame, this_cache); |
| 2676 | |
| 2677 | return cache->base; |
| 2678 | } |
| 2679 | |
| 2680 | static const struct frame_base sh_frame_base = { |
| 2681 | &sh_frame_unwind, |
| 2682 | sh_frame_base_address, |
| 2683 | sh_frame_base_address, |
| 2684 | sh_frame_base_address |
| 2685 | }; |
| 2686 | |
| 2687 | /* The epilogue is defined here as the area at the end of a function, |
| 2688 | either on the `ret' instruction itself or after an instruction which |
| 2689 | destroys the function's stack frame. */ |
| 2690 | static int |
| 2691 | sh_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 2692 | { |
| 2693 | CORE_ADDR func_addr = 0, func_end = 0; |
| 2694 | |
| 2695 | if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) |
| 2696 | { |
| 2697 | ULONGEST inst; |
| 2698 | /* The sh epilogue is max. 14 bytes long. Give another 14 bytes |
| 2699 | for a nop and some fixed data (e.g. big offsets) which are |
| 2700 | unfortunately also treated as part of the function (which |
| 2701 | means, they are below func_end. */ |
| 2702 | CORE_ADDR addr = func_end - 28; |
| 2703 | if (addr < func_addr + 4) |
| 2704 | addr = func_addr + 4; |
| 2705 | if (pc < addr) |
| 2706 | return 0; |
| 2707 | |
| 2708 | /* First search forward until hitting an rts. */ |
| 2709 | while (addr < func_end |
| 2710 | && !IS_RTS (read_memory_unsigned_integer (addr, 2))) |
| 2711 | addr += 2; |
| 2712 | if (addr >= func_end) |
| 2713 | return 0; |
| 2714 | |
| 2715 | /* At this point we should find a mov.l @r15+,r14 instruction, |
| 2716 | either before or after the rts. If not, then the function has |
| 2717 | probably no "normal" epilogue and we bail out here. */ |
| 2718 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2719 | if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2))) |
| 2720 | addr -= 2; |
| 2721 | else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2))) |
| 2722 | return 0; |
| 2723 | |
| 2724 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2725 | |
| 2726 | /* Step over possible lds.l @r15+,macl. */ |
| 2727 | if (IS_MACL_LDS (inst)) |
| 2728 | { |
| 2729 | addr -= 2; |
| 2730 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2731 | } |
| 2732 | |
| 2733 | /* Step over possible lds.l @r15+,pr. */ |
| 2734 | if (IS_LDS (inst)) |
| 2735 | { |
| 2736 | addr -= 2; |
| 2737 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2738 | } |
| 2739 | |
| 2740 | /* Step over possible mov r14,r15. */ |
| 2741 | if (IS_MOV_FP_SP (inst)) |
| 2742 | { |
| 2743 | addr -= 2; |
| 2744 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2745 | } |
| 2746 | |
| 2747 | /* Now check for FP adjustments, using add #imm,r14 or add rX, r14 |
| 2748 | instructions. */ |
| 2749 | while (addr > func_addr + 4 |
| 2750 | && (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst))) |
| 2751 | { |
| 2752 | addr -= 2; |
| 2753 | inst = read_memory_unsigned_integer (addr - 2, 2); |
| 2754 | } |
| 2755 | |
| 2756 | /* On SH2a check if the previous instruction was perhaps a MOVI20. |
| 2757 | That's allowed for the epilogue. */ |
| 2758 | if ((gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a |
| 2759 | || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a_nofpu) |
| 2760 | && addr > func_addr + 6 |
| 2761 | && IS_MOVI20 (read_memory_unsigned_integer (addr - 4, 2))) |
| 2762 | addr -= 4; |
| 2763 | |
| 2764 | if (pc >= addr) |
| 2765 | return 1; |
| 2766 | } |
| 2767 | return 0; |
| 2768 | } |
| 2769 | \f |
| 2770 | |
| 2771 | static struct gdbarch * |
| 2772 | sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
| 2773 | { |
| 2774 | struct gdbarch *gdbarch; |
| 2775 | |
| 2776 | sh_show_regs = sh_generic_show_regs; |
| 2777 | switch (info.bfd_arch_info->mach) |
| 2778 | { |
| 2779 | case bfd_mach_sh2e: |
| 2780 | sh_show_regs = sh2e_show_regs; |
| 2781 | break; |
| 2782 | case bfd_mach_sh2a: |
| 2783 | sh_show_regs = sh2a_show_regs; |
| 2784 | break; |
| 2785 | case bfd_mach_sh2a_nofpu: |
| 2786 | sh_show_regs = sh2a_nofpu_show_regs; |
| 2787 | break; |
| 2788 | case bfd_mach_sh_dsp: |
| 2789 | sh_show_regs = sh_dsp_show_regs; |
| 2790 | break; |
| 2791 | |
| 2792 | case bfd_mach_sh3: |
| 2793 | sh_show_regs = sh3_show_regs; |
| 2794 | break; |
| 2795 | |
| 2796 | case bfd_mach_sh3e: |
| 2797 | sh_show_regs = sh3e_show_regs; |
| 2798 | break; |
| 2799 | |
| 2800 | case bfd_mach_sh3_dsp: |
| 2801 | case bfd_mach_sh4al_dsp: |
| 2802 | sh_show_regs = sh3_dsp_show_regs; |
| 2803 | break; |
| 2804 | |
| 2805 | case bfd_mach_sh4: |
| 2806 | case bfd_mach_sh4a: |
| 2807 | sh_show_regs = sh4_show_regs; |
| 2808 | break; |
| 2809 | |
| 2810 | case bfd_mach_sh4_nofpu: |
| 2811 | case bfd_mach_sh4a_nofpu: |
| 2812 | sh_show_regs = sh4_nofpu_show_regs; |
| 2813 | break; |
| 2814 | |
| 2815 | case bfd_mach_sh5: |
| 2816 | sh_show_regs = sh64_show_regs; |
| 2817 | /* SH5 is handled entirely in sh64-tdep.c */ |
| 2818 | return sh64_gdbarch_init (info, arches); |
| 2819 | } |
| 2820 | |
| 2821 | /* If there is already a candidate, use it. */ |
| 2822 | arches = gdbarch_list_lookup_by_info (arches, &info); |
| 2823 | if (arches != NULL) |
| 2824 | return arches->gdbarch; |
| 2825 | |
| 2826 | /* None found, create a new architecture from the information |
| 2827 | provided. */ |
| 2828 | gdbarch = gdbarch_alloc (&info, NULL); |
| 2829 | |
| 2830 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
| 2831 | set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2832 | set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2833 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 2834 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2835 | set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 2836 | set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 2837 | set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2838 | |
| 2839 | set_gdbarch_num_regs (gdbarch, SH_NUM_REGS); |
| 2840 | set_gdbarch_sp_regnum (gdbarch, 15); |
| 2841 | set_gdbarch_pc_regnum (gdbarch, 16); |
| 2842 | set_gdbarch_fp0_regnum (gdbarch, -1); |
| 2843 | set_gdbarch_num_pseudo_regs (gdbarch, 0); |
| 2844 | |
| 2845 | set_gdbarch_register_type (gdbarch, sh_default_register_type); |
| 2846 | set_gdbarch_register_reggroup_p (gdbarch, sh_register_reggroup_p); |
| 2847 | |
| 2848 | set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); |
| 2849 | |
| 2850 | set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh); |
| 2851 | set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno); |
| 2852 | |
| 2853 | set_gdbarch_return_value (gdbarch, sh_return_value_nofpu); |
| 2854 | |
| 2855 | set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue); |
| 2856 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
| 2857 | |
| 2858 | set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu); |
| 2859 | |
| 2860 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); |
| 2861 | |
| 2862 | set_gdbarch_frame_align (gdbarch, sh_frame_align); |
| 2863 | set_gdbarch_unwind_sp (gdbarch, sh_unwind_sp); |
| 2864 | set_gdbarch_unwind_pc (gdbarch, sh_unwind_pc); |
| 2865 | set_gdbarch_unwind_dummy_id (gdbarch, sh_unwind_dummy_id); |
| 2866 | frame_base_set_default (gdbarch, &sh_frame_base); |
| 2867 | |
| 2868 | set_gdbarch_in_function_epilogue_p (gdbarch, sh_in_function_epilogue_p); |
| 2869 | |
| 2870 | dwarf2_frame_set_init_reg (gdbarch, sh_dwarf2_frame_init_reg); |
| 2871 | |
| 2872 | switch (info.bfd_arch_info->mach) |
| 2873 | { |
| 2874 | case bfd_mach_sh: |
| 2875 | set_gdbarch_register_name (gdbarch, sh_sh_register_name); |
| 2876 | break; |
| 2877 | |
| 2878 | case bfd_mach_sh2: |
| 2879 | set_gdbarch_register_name (gdbarch, sh_sh_register_name); |
| 2880 | break; |
| 2881 | |
| 2882 | case bfd_mach_sh2e: |
| 2883 | /* doubles on sh2e and sh3e are actually 4 byte. */ |
| 2884 | set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2885 | |
| 2886 | set_gdbarch_register_name (gdbarch, sh_sh2e_register_name); |
| 2887 | set_gdbarch_register_type (gdbarch, sh_sh3e_register_type); |
| 2888 | set_gdbarch_fp0_regnum (gdbarch, 25); |
| 2889 | set_gdbarch_return_value (gdbarch, sh_return_value_fpu); |
| 2890 | set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu); |
| 2891 | break; |
| 2892 | |
| 2893 | case bfd_mach_sh2a: |
| 2894 | set_gdbarch_register_name (gdbarch, sh_sh2a_register_name); |
| 2895 | set_gdbarch_register_type (gdbarch, sh_sh2a_register_type); |
| 2896 | set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno); |
| 2897 | |
| 2898 | set_gdbarch_fp0_regnum (gdbarch, 25); |
| 2899 | set_gdbarch_num_pseudo_regs (gdbarch, 9); |
| 2900 | set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read); |
| 2901 | set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write); |
| 2902 | set_gdbarch_return_value (gdbarch, sh_return_value_fpu); |
| 2903 | set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu); |
| 2904 | break; |
| 2905 | |
| 2906 | case bfd_mach_sh2a_nofpu: |
| 2907 | set_gdbarch_register_name (gdbarch, sh_sh2a_nofpu_register_name); |
| 2908 | set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno); |
| 2909 | |
| 2910 | set_gdbarch_num_pseudo_regs (gdbarch, 1); |
| 2911 | set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read); |
| 2912 | set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write); |
| 2913 | break; |
| 2914 | |
| 2915 | case bfd_mach_sh_dsp: |
| 2916 | set_gdbarch_register_name (gdbarch, sh_sh_dsp_register_name); |
| 2917 | set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno); |
| 2918 | break; |
| 2919 | |
| 2920 | case bfd_mach_sh3: |
| 2921 | case bfd_mach_sh3_nommu: |
| 2922 | case bfd_mach_sh2a_nofpu_or_sh3_nommu: |
| 2923 | set_gdbarch_register_name (gdbarch, sh_sh3_register_name); |
| 2924 | break; |
| 2925 | |
| 2926 | case bfd_mach_sh3e: |
| 2927 | case bfd_mach_sh2a_or_sh3e: |
| 2928 | /* doubles on sh2e and sh3e are actually 4 byte. */ |
| 2929 | set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 2930 | |
| 2931 | set_gdbarch_register_name (gdbarch, sh_sh3e_register_name); |
| 2932 | set_gdbarch_register_type (gdbarch, sh_sh3e_register_type); |
| 2933 | set_gdbarch_fp0_regnum (gdbarch, 25); |
| 2934 | set_gdbarch_return_value (gdbarch, sh_return_value_fpu); |
| 2935 | set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu); |
| 2936 | break; |
| 2937 | |
| 2938 | case bfd_mach_sh3_dsp: |
| 2939 | set_gdbarch_register_name (gdbarch, sh_sh3_dsp_register_name); |
| 2940 | set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno); |
| 2941 | break; |
| 2942 | |
| 2943 | case bfd_mach_sh4: |
| 2944 | case bfd_mach_sh4a: |
| 2945 | set_gdbarch_register_name (gdbarch, sh_sh4_register_name); |
| 2946 | set_gdbarch_register_type (gdbarch, sh_sh4_register_type); |
| 2947 | set_gdbarch_fp0_regnum (gdbarch, 25); |
| 2948 | set_gdbarch_num_pseudo_regs (gdbarch, 13); |
| 2949 | set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read); |
| 2950 | set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write); |
| 2951 | set_gdbarch_return_value (gdbarch, sh_return_value_fpu); |
| 2952 | set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu); |
| 2953 | break; |
| 2954 | |
| 2955 | case bfd_mach_sh4_nofpu: |
| 2956 | case bfd_mach_sh4a_nofpu: |
| 2957 | case bfd_mach_sh4_nommu_nofpu: |
| 2958 | case bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu: |
| 2959 | case bfd_mach_sh2a_or_sh4: |
| 2960 | set_gdbarch_register_name (gdbarch, sh_sh4_nofpu_register_name); |
| 2961 | break; |
| 2962 | |
| 2963 | case bfd_mach_sh4al_dsp: |
| 2964 | set_gdbarch_register_name (gdbarch, sh_sh4al_dsp_register_name); |
| 2965 | set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno); |
| 2966 | break; |
| 2967 | |
| 2968 | default: |
| 2969 | set_gdbarch_register_name (gdbarch, sh_sh_register_name); |
| 2970 | break; |
| 2971 | } |
| 2972 | |
| 2973 | /* Hook in ABI-specific overrides, if they have been registered. */ |
| 2974 | gdbarch_init_osabi (info, gdbarch); |
| 2975 | |
| 2976 | frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer); |
| 2977 | frame_unwind_append_sniffer (gdbarch, sh_frame_sniffer); |
| 2978 | |
| 2979 | return gdbarch; |
| 2980 | } |
| 2981 | |
| 2982 | static void |
| 2983 | show_sh_command (char *args, int from_tty) |
| 2984 | { |
| 2985 | help_list (showshcmdlist, "show sh ", all_commands, gdb_stdout); |
| 2986 | } |
| 2987 | |
| 2988 | static void |
| 2989 | set_sh_command (char *args, int from_tty) |
| 2990 | { |
| 2991 | printf_unfiltered |
| 2992 | ("\"set sh\" must be followed by an appropriate subcommand.\n"); |
| 2993 | help_list (setshcmdlist, "set sh ", all_commands, gdb_stdout); |
| 2994 | } |
| 2995 | |
| 2996 | extern initialize_file_ftype _initialize_sh_tdep; /* -Wmissing-prototypes */ |
| 2997 | |
| 2998 | void |
| 2999 | _initialize_sh_tdep (void) |
| 3000 | { |
| 3001 | struct cmd_list_element *c; |
| 3002 | |
| 3003 | gdbarch_register (bfd_arch_sh, sh_gdbarch_init, NULL); |
| 3004 | |
| 3005 | add_com ("regs", class_vars, sh_show_regs_command, _("Print all registers")); |
| 3006 | |
| 3007 | add_prefix_cmd ("sh", no_class, set_sh_command, "SH specific commands.", |
| 3008 | &setshcmdlist, "set sh ", 0, &setlist); |
| 3009 | add_prefix_cmd ("sh", no_class, show_sh_command, "SH specific commands.", |
| 3010 | &showshcmdlist, "show sh ", 0, &showlist); |
| 3011 | |
| 3012 | add_setshow_enum_cmd ("calling-convention", class_vars, sh_cc_enum, |
| 3013 | &sh_active_calling_convention, |
| 3014 | _("Set calling convention used when calling target " |
| 3015 | "functions from GDB."), |
| 3016 | _("Show calling convention used when calling target " |
| 3017 | "functions from GDB."), |
| 3018 | _("gcc - Use GCC calling convention (default).\n" |
| 3019 | "renesas - Enforce Renesas calling convention."), |
| 3020 | NULL, NULL, |
| 3021 | &setshcmdlist, &showshcmdlist); |
| 3022 | } |