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GDB (API)
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GDB (API)
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00001 /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger. 00002 00003 Copyright (C) 2003-2013 Free Software Foundation, Inc. 00004 00005 This file is part of GDB. 00006 00007 This program is free software; you can redistribute it and/or modify 00008 it under the terms of the GNU General Public License as published by 00009 the Free Software Foundation; either version 3 of the License, or 00010 (at your option) any later version. 00011 00012 This program is distributed in the hope that it will be useful, 00013 but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 GNU General Public License for more details. 00016 00017 You should have received a copy of the GNU General Public License 00018 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 00019 00020 #include "defs.h" 00021 #include "gdbcore.h" 00022 #include "gdb_string.h" 00023 #include "regcache.h" 00024 #include "mn10300-tdep.h" 00025 #include "gdb_assert.h" 00026 #include "bfd.h" 00027 #include "elf-bfd.h" 00028 #include "osabi.h" 00029 #include "regset.h" 00030 #include "solib-svr4.h" 00031 #include "frame.h" 00032 #include "trad-frame.h" 00033 #include "tramp-frame.h" 00034 #include "linux-tdep.h" 00035 00036 #include <stdlib.h> 00037 00038 /* Transliterated from <asm-mn10300/elf.h>... */ 00039 #define MN10300_ELF_NGREG 28 00040 #define MN10300_ELF_NFPREG 32 00041 00042 typedef gdb_byte mn10300_elf_greg_t[4]; 00043 typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG]; 00044 00045 typedef gdb_byte mn10300_elf_fpreg_t[4]; 00046 typedef struct 00047 { 00048 mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG]; 00049 gdb_byte fpcr[4]; 00050 } mn10300_elf_fpregset_t; 00051 00052 /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */ 00053 #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0 00054 #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1 00055 #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2 00056 #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3 00057 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4 00058 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5 00059 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6 00060 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7 00061 #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8 00062 #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9 00063 #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10 00064 #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11 00065 #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12 00066 #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13 00067 #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14 00068 #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15 00069 #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16 00070 #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17 00071 #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18 00072 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19 00073 #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20 00074 #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21 00075 #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22 00076 #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23 00077 #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24 00078 #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25 00079 #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26 00080 00081 /* New gdbarch API for corefile registers. 00082 Given a section name and size, create a struct reg object 00083 with a supply_register and a collect_register method. */ 00084 00085 /* Copy register value of REGNUM from regset to regcache. 00086 If REGNUM is -1, do this for all gp registers in regset. */ 00087 00088 static void 00089 am33_supply_gregset_method (const struct regset *regset, 00090 struct regcache *regcache, 00091 int regnum, const void *gregs, size_t len) 00092 { 00093 char zerobuf[MAX_REGISTER_SIZE]; 00094 const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs; 00095 int i; 00096 00097 gdb_assert (len == sizeof (mn10300_elf_gregset_t)); 00098 00099 switch (regnum) { 00100 case E_D0_REGNUM: 00101 regcache_raw_supply (regcache, E_D0_REGNUM, 00102 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); 00103 break; 00104 case E_D1_REGNUM: 00105 regcache_raw_supply (regcache, E_D1_REGNUM, 00106 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); 00107 break; 00108 case E_D2_REGNUM: 00109 regcache_raw_supply (regcache, E_D2_REGNUM, 00110 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); 00111 break; 00112 case E_D3_REGNUM: 00113 regcache_raw_supply (regcache, E_D3_REGNUM, 00114 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); 00115 break; 00116 case E_A0_REGNUM: 00117 regcache_raw_supply (regcache, E_A0_REGNUM, 00118 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); 00119 break; 00120 case E_A1_REGNUM: 00121 regcache_raw_supply (regcache, E_A1_REGNUM, 00122 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); 00123 break; 00124 case E_A2_REGNUM: 00125 regcache_raw_supply (regcache, E_A2_REGNUM, 00126 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); 00127 break; 00128 case E_A3_REGNUM: 00129 regcache_raw_supply (regcache, E_A3_REGNUM, 00130 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); 00131 break; 00132 case E_SP_REGNUM: 00133 regcache_raw_supply (regcache, E_SP_REGNUM, 00134 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); 00135 break; 00136 case E_PC_REGNUM: 00137 regcache_raw_supply (regcache, E_PC_REGNUM, 00138 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); 00139 break; 00140 case E_MDR_REGNUM: 00141 regcache_raw_supply (regcache, E_MDR_REGNUM, 00142 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); 00143 break; 00144 case E_PSW_REGNUM: 00145 regcache_raw_supply (regcache, E_PSW_REGNUM, 00146 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); 00147 break; 00148 case E_LIR_REGNUM: 00149 regcache_raw_supply (regcache, E_LIR_REGNUM, 00150 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); 00151 break; 00152 case E_LAR_REGNUM: 00153 regcache_raw_supply (regcache, E_LAR_REGNUM, 00154 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); 00155 break; 00156 case E_MDRQ_REGNUM: 00157 regcache_raw_supply (regcache, E_MDRQ_REGNUM, 00158 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); 00159 break; 00160 case E_E0_REGNUM: 00161 regcache_raw_supply (regcache, E_E0_REGNUM, 00162 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); 00163 break; 00164 case E_E1_REGNUM: 00165 regcache_raw_supply (regcache, E_E1_REGNUM, 00166 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); 00167 break; 00168 case E_E2_REGNUM: 00169 regcache_raw_supply (regcache, E_E2_REGNUM, 00170 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); 00171 break; 00172 case E_E3_REGNUM: 00173 regcache_raw_supply (regcache, E_E3_REGNUM, 00174 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); 00175 break; 00176 case E_E4_REGNUM: 00177 regcache_raw_supply (regcache, E_E4_REGNUM, 00178 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); 00179 break; 00180 case E_E5_REGNUM: 00181 regcache_raw_supply (regcache, E_E5_REGNUM, 00182 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); 00183 break; 00184 case E_E6_REGNUM: 00185 regcache_raw_supply (regcache, E_E6_REGNUM, 00186 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); 00187 break; 00188 case E_E7_REGNUM: 00189 regcache_raw_supply (regcache, E_E7_REGNUM, 00190 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); 00191 break; 00192 00193 /* ssp, msp, and usp are inaccessible. */ 00194 case E_E8_REGNUM: 00195 memset (zerobuf, 0, MAX_REGISTER_SIZE); 00196 regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf); 00197 break; 00198 case E_E9_REGNUM: 00199 memset (zerobuf, 0, MAX_REGISTER_SIZE); 00200 regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf); 00201 break; 00202 case E_E10_REGNUM: 00203 memset (zerobuf, 0, MAX_REGISTER_SIZE); 00204 regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf); 00205 00206 break; 00207 case E_MCRH_REGNUM: 00208 regcache_raw_supply (regcache, E_MCRH_REGNUM, 00209 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); 00210 break; 00211 case E_MCRL_REGNUM: 00212 regcache_raw_supply (regcache, E_MCRL_REGNUM, 00213 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); 00214 break; 00215 case E_MCVF_REGNUM: 00216 regcache_raw_supply (regcache, E_MCVF_REGNUM, 00217 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); 00218 break; 00219 case E_FPCR_REGNUM: 00220 /* FPCR is numbered among the GP regs, but handled as an FP reg. 00221 Do nothing. */ 00222 break; 00223 case E_FPCR_REGNUM + 1: 00224 /* The two unused registers beyond fpcr are inaccessible. */ 00225 memset (zerobuf, 0, MAX_REGISTER_SIZE); 00226 regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf); 00227 break; 00228 case E_FPCR_REGNUM + 2: 00229 memset (zerobuf, 0, MAX_REGISTER_SIZE); 00230 regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf); 00231 break; 00232 default: /* An error, obviously, but should we error out? */ 00233 break; 00234 case -1: 00235 for (i = 0; i < MN10300_ELF_NGREG; i++) 00236 am33_supply_gregset_method (regset, regcache, i, gregs, len); 00237 break; 00238 } 00239 return; 00240 } 00241 00242 /* Copy fp register value of REGNUM from regset to regcache. 00243 If REGNUM is -1, do this for all fp registers in regset. */ 00244 00245 static void 00246 am33_supply_fpregset_method (const struct regset *regset, 00247 struct regcache *regcache, 00248 int regnum, const void *fpregs, size_t len) 00249 { 00250 const mn10300_elf_fpregset_t *fpregset = fpregs; 00251 00252 gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); 00253 00254 if (regnum == -1) 00255 { 00256 int i; 00257 00258 for (i = 0; i < MN10300_ELF_NFPREG; i++) 00259 am33_supply_fpregset_method (regset, regcache, 00260 E_FS0_REGNUM + i, fpregs, len); 00261 am33_supply_fpregset_method (regset, regcache, 00262 E_FPCR_REGNUM, fpregs, len); 00263 } 00264 else if (regnum == E_FPCR_REGNUM) 00265 regcache_raw_supply (regcache, E_FPCR_REGNUM, 00266 &fpregset->fpcr); 00267 else if (E_FS0_REGNUM <= regnum 00268 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) 00269 regcache_raw_supply (regcache, regnum, 00270 &fpregset->fpregs[regnum - E_FS0_REGNUM]); 00271 00272 return; 00273 } 00274 00275 /* Copy register values from regcache to regset. */ 00276 00277 static void 00278 am33_collect_gregset_method (const struct regset *regset, 00279 const struct regcache *regcache, 00280 int regnum, void *gregs, size_t len) 00281 { 00282 mn10300_elf_gregset_t *regp = gregs; 00283 int i; 00284 00285 gdb_assert (len == sizeof (mn10300_elf_gregset_t)); 00286 00287 switch (regnum) { 00288 case E_D0_REGNUM: 00289 regcache_raw_collect (regcache, E_D0_REGNUM, 00290 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); 00291 break; 00292 case E_D1_REGNUM: 00293 regcache_raw_collect (regcache, E_D1_REGNUM, 00294 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); 00295 break; 00296 case E_D2_REGNUM: 00297 regcache_raw_collect (regcache, E_D2_REGNUM, 00298 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); 00299 break; 00300 case E_D3_REGNUM: 00301 regcache_raw_collect (regcache, E_D3_REGNUM, 00302 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); 00303 break; 00304 case E_A0_REGNUM: 00305 regcache_raw_collect (regcache, E_A0_REGNUM, 00306 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); 00307 break; 00308 case E_A1_REGNUM: 00309 regcache_raw_collect (regcache, E_A1_REGNUM, 00310 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); 00311 break; 00312 case E_A2_REGNUM: 00313 regcache_raw_collect (regcache, E_A2_REGNUM, 00314 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); 00315 break; 00316 case E_A3_REGNUM: 00317 regcache_raw_collect (regcache, E_A3_REGNUM, 00318 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); 00319 break; 00320 case E_SP_REGNUM: 00321 regcache_raw_collect (regcache, E_SP_REGNUM, 00322 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); 00323 break; 00324 case E_PC_REGNUM: 00325 regcache_raw_collect (regcache, E_PC_REGNUM, 00326 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); 00327 break; 00328 case E_MDR_REGNUM: 00329 regcache_raw_collect (regcache, E_MDR_REGNUM, 00330 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); 00331 break; 00332 case E_PSW_REGNUM: 00333 regcache_raw_collect (regcache, E_PSW_REGNUM, 00334 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); 00335 break; 00336 case E_LIR_REGNUM: 00337 regcache_raw_collect (regcache, E_LIR_REGNUM, 00338 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); 00339 break; 00340 case E_LAR_REGNUM: 00341 regcache_raw_collect (regcache, E_LAR_REGNUM, 00342 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); 00343 break; 00344 case E_MDRQ_REGNUM: 00345 regcache_raw_collect (regcache, E_MDRQ_REGNUM, 00346 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); 00347 break; 00348 case E_E0_REGNUM: 00349 regcache_raw_collect (regcache, E_E0_REGNUM, 00350 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); 00351 break; 00352 case E_E1_REGNUM: 00353 regcache_raw_collect (regcache, E_E1_REGNUM, 00354 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); 00355 break; 00356 case E_E2_REGNUM: 00357 regcache_raw_collect (regcache, E_E2_REGNUM, 00358 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); 00359 break; 00360 case E_E3_REGNUM: 00361 regcache_raw_collect (regcache, E_E3_REGNUM, 00362 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); 00363 break; 00364 case E_E4_REGNUM: 00365 regcache_raw_collect (regcache, E_E4_REGNUM, 00366 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); 00367 break; 00368 case E_E5_REGNUM: 00369 regcache_raw_collect (regcache, E_E5_REGNUM, 00370 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); 00371 break; 00372 case E_E6_REGNUM: 00373 regcache_raw_collect (regcache, E_E6_REGNUM, 00374 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); 00375 break; 00376 case E_E7_REGNUM: 00377 regcache_raw_collect (regcache, E_E7_REGNUM, 00378 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); 00379 break; 00380 00381 /* ssp, msp, and usp are inaccessible. */ 00382 case E_E8_REGNUM: 00383 /* The gregset struct has noplace to put this: do nothing. */ 00384 break; 00385 case E_E9_REGNUM: 00386 /* The gregset struct has noplace to put this: do nothing. */ 00387 break; 00388 case E_E10_REGNUM: 00389 /* The gregset struct has noplace to put this: do nothing. */ 00390 break; 00391 case E_MCRH_REGNUM: 00392 regcache_raw_collect (regcache, E_MCRH_REGNUM, 00393 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); 00394 break; 00395 case E_MCRL_REGNUM: 00396 regcache_raw_collect (regcache, E_MCRL_REGNUM, 00397 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); 00398 break; 00399 case E_MCVF_REGNUM: 00400 regcache_raw_collect (regcache, E_MCVF_REGNUM, 00401 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); 00402 break; 00403 case E_FPCR_REGNUM: 00404 /* FPCR is numbered among the GP regs, but handled as an FP reg. 00405 Do nothing. */ 00406 break; 00407 case E_FPCR_REGNUM + 1: 00408 /* The gregset struct has noplace to put this: do nothing. */ 00409 break; 00410 case E_FPCR_REGNUM + 2: 00411 /* The gregset struct has noplace to put this: do nothing. */ 00412 break; 00413 default: /* An error, obviously, but should we error out? */ 00414 break; 00415 case -1: 00416 for (i = 0; i < MN10300_ELF_NGREG; i++) 00417 am33_collect_gregset_method (regset, regcache, i, gregs, len); 00418 break; 00419 } 00420 return; 00421 } 00422 00423 /* Copy fp register values from regcache to regset. */ 00424 00425 static void 00426 am33_collect_fpregset_method (const struct regset *regset, 00427 const struct regcache *regcache, 00428 int regnum, void *fpregs, size_t len) 00429 { 00430 mn10300_elf_fpregset_t *fpregset = fpregs; 00431 00432 gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); 00433 00434 if (regnum == -1) 00435 { 00436 int i; 00437 for (i = 0; i < MN10300_ELF_NFPREG; i++) 00438 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i, 00439 fpregs, len); 00440 am33_collect_fpregset_method (regset, regcache, 00441 E_FPCR_REGNUM, fpregs, len); 00442 } 00443 else if (regnum == E_FPCR_REGNUM) 00444 regcache_raw_collect (regcache, E_FPCR_REGNUM, 00445 &fpregset->fpcr); 00446 else if (E_FS0_REGNUM <= regnum 00447 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) 00448 regcache_raw_collect (regcache, regnum, 00449 &fpregset->fpregs[regnum - E_FS0_REGNUM]); 00450 00451 return; 00452 } 00453 00454 /* Create a struct regset from a corefile register section. */ 00455 00456 static const struct regset * 00457 am33_regset_from_core_section (struct gdbarch *gdbarch, 00458 const char *sect_name, 00459 size_t sect_size) 00460 { 00461 /* We will call regset_alloc, and pass the names of the supply and 00462 collect methods. */ 00463 00464 if (sect_size == sizeof (mn10300_elf_fpregset_t)) 00465 return regset_alloc (gdbarch, 00466 am33_supply_fpregset_method, 00467 am33_collect_fpregset_method); 00468 else 00469 return regset_alloc (gdbarch, 00470 am33_supply_gregset_method, 00471 am33_collect_gregset_method); 00472 } 00473 00474 static void 00475 am33_linux_sigframe_cache_init (const struct tramp_frame *self, 00476 struct frame_info *this_frame, 00477 struct trad_frame_cache *this_cache, 00478 CORE_ADDR func); 00479 00480 static const struct tramp_frame am33_linux_sigframe = { 00481 SIGTRAMP_FRAME, 00482 1, 00483 { 00484 /* mov 119,d0 */ 00485 { 0x2c, -1 }, 00486 { 0x77, -1 }, 00487 { 0x00, -1 }, 00488 /* syscall 0 */ 00489 { 0xf0, -1 }, 00490 { 0xe0, -1 }, 00491 { TRAMP_SENTINEL_INSN, -1 } 00492 }, 00493 am33_linux_sigframe_cache_init 00494 }; 00495 00496 static const struct tramp_frame am33_linux_rt_sigframe = { 00497 SIGTRAMP_FRAME, 00498 1, 00499 { 00500 /* mov 173,d0 */ 00501 { 0x2c, -1 }, 00502 { 0xad, -1 }, 00503 { 0x00, -1 }, 00504 /* syscall 0 */ 00505 { 0xf0, -1 }, 00506 { 0xe0, -1 }, 00507 { TRAMP_SENTINEL_INSN, -1 } 00508 }, 00509 am33_linux_sigframe_cache_init 00510 }; 00511 00512 /* Relevant struct definitions for signal handling... 00513 00514 From arch/mn10300/kernel/sigframe.h: 00515 00516 struct sigframe 00517 { 00518 void (*pretcode)(void); 00519 int sig; 00520 struct sigcontext *psc; 00521 struct sigcontext sc; 00522 struct fpucontext fpuctx; 00523 unsigned long extramask[_NSIG_WORDS-1]; 00524 char retcode[8]; 00525 }; 00526 00527 struct rt_sigframe 00528 { 00529 void (*pretcode)(void); 00530 int sig; 00531 struct siginfo *pinfo; 00532 void *puc; 00533 struct siginfo info; 00534 struct ucontext uc; 00535 struct fpucontext fpuctx; 00536 char retcode[8]; 00537 }; 00538 00539 From include/asm-mn10300/ucontext.h: 00540 00541 struct ucontext { 00542 unsigned long uc_flags; 00543 struct ucontext *uc_link; 00544 stack_t uc_stack; 00545 struct sigcontext uc_mcontext; 00546 sigset_t uc_sigmask; 00547 }; 00548 00549 From include/asm-mn10300/sigcontext.h: 00550 00551 struct fpucontext { 00552 unsigned long fs[32]; 00553 unsigned long fpcr; 00554 }; 00555 00556 struct sigcontext { 00557 unsigned long d0; 00558 unsigned long d1; 00559 unsigned long d2; 00560 unsigned long d3; 00561 unsigned long a0; 00562 unsigned long a1; 00563 unsigned long a2; 00564 unsigned long a3; 00565 unsigned long e0; 00566 unsigned long e1; 00567 unsigned long e2; 00568 unsigned long e3; 00569 unsigned long e4; 00570 unsigned long e5; 00571 unsigned long e6; 00572 unsigned long e7; 00573 unsigned long lar; 00574 unsigned long lir; 00575 unsigned long mdr; 00576 unsigned long mcvf; 00577 unsigned long mcrl; 00578 unsigned long mcrh; 00579 unsigned long mdrq; 00580 unsigned long sp; 00581 unsigned long epsw; 00582 unsigned long pc; 00583 struct fpucontext *fpucontext; 00584 unsigned long oldmask; 00585 }; */ 00586 00587 00588 #define AM33_SIGCONTEXT_D0 0 00589 #define AM33_SIGCONTEXT_D1 4 00590 #define AM33_SIGCONTEXT_D2 8 00591 #define AM33_SIGCONTEXT_D3 12 00592 #define AM33_SIGCONTEXT_A0 16 00593 #define AM33_SIGCONTEXT_A1 20 00594 #define AM33_SIGCONTEXT_A2 24 00595 #define AM33_SIGCONTEXT_A3 28 00596 #define AM33_SIGCONTEXT_E0 32 00597 #define AM33_SIGCONTEXT_E1 36 00598 #define AM33_SIGCONTEXT_E2 40 00599 #define AM33_SIGCONTEXT_E3 44 00600 #define AM33_SIGCONTEXT_E4 48 00601 #define AM33_SIGCONTEXT_E5 52 00602 #define AM33_SIGCONTEXT_E6 56 00603 #define AM33_SIGCONTEXT_E7 60 00604 #define AM33_SIGCONTEXT_LAR 64 00605 #define AM33_SIGCONTEXT_LIR 68 00606 #define AM33_SIGCONTEXT_MDR 72 00607 #define AM33_SIGCONTEXT_MCVF 76 00608 #define AM33_SIGCONTEXT_MCRL 80 00609 #define AM33_SIGCONTEXT_MCRH 84 00610 #define AM33_SIGCONTEXT_MDRQ 88 00611 #define AM33_SIGCONTEXT_SP 92 00612 #define AM33_SIGCONTEXT_EPSW 96 00613 #define AM33_SIGCONTEXT_PC 100 00614 #define AM33_SIGCONTEXT_FPUCONTEXT 104 00615 00616 00617 static void 00618 am33_linux_sigframe_cache_init (const struct tramp_frame *self, 00619 struct frame_info *this_frame, 00620 struct trad_frame_cache *this_cache, 00621 CORE_ADDR func) 00622 { 00623 CORE_ADDR sc_base, fpubase; 00624 int i; 00625 00626 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM); 00627 if (self == &am33_linux_sigframe) 00628 { 00629 sc_base += 8; 00630 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); 00631 } 00632 else 00633 { 00634 sc_base += 12; 00635 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); 00636 sc_base += 20; 00637 } 00638 00639 trad_frame_set_reg_addr (this_cache, E_D0_REGNUM, 00640 sc_base + AM33_SIGCONTEXT_D0); 00641 trad_frame_set_reg_addr (this_cache, E_D1_REGNUM, 00642 sc_base + AM33_SIGCONTEXT_D1); 00643 trad_frame_set_reg_addr (this_cache, E_D2_REGNUM, 00644 sc_base + AM33_SIGCONTEXT_D2); 00645 trad_frame_set_reg_addr (this_cache, E_D3_REGNUM, 00646 sc_base + AM33_SIGCONTEXT_D3); 00647 00648 trad_frame_set_reg_addr (this_cache, E_A0_REGNUM, 00649 sc_base + AM33_SIGCONTEXT_A0); 00650 trad_frame_set_reg_addr (this_cache, E_A1_REGNUM, 00651 sc_base + AM33_SIGCONTEXT_A1); 00652 trad_frame_set_reg_addr (this_cache, E_A2_REGNUM, 00653 sc_base + AM33_SIGCONTEXT_A2); 00654 trad_frame_set_reg_addr (this_cache, E_A3_REGNUM, 00655 sc_base + AM33_SIGCONTEXT_A3); 00656 00657 trad_frame_set_reg_addr (this_cache, E_E0_REGNUM, 00658 sc_base + AM33_SIGCONTEXT_E0); 00659 trad_frame_set_reg_addr (this_cache, E_E1_REGNUM, 00660 sc_base + AM33_SIGCONTEXT_E1); 00661 trad_frame_set_reg_addr (this_cache, E_E2_REGNUM, 00662 sc_base + AM33_SIGCONTEXT_E2); 00663 trad_frame_set_reg_addr (this_cache, E_E3_REGNUM, 00664 sc_base + AM33_SIGCONTEXT_E3); 00665 trad_frame_set_reg_addr (this_cache, E_E4_REGNUM, 00666 sc_base + AM33_SIGCONTEXT_E4); 00667 trad_frame_set_reg_addr (this_cache, E_E5_REGNUM, 00668 sc_base + AM33_SIGCONTEXT_E5); 00669 trad_frame_set_reg_addr (this_cache, E_E6_REGNUM, 00670 sc_base + AM33_SIGCONTEXT_E6); 00671 trad_frame_set_reg_addr (this_cache, E_E7_REGNUM, 00672 sc_base + AM33_SIGCONTEXT_E7); 00673 00674 trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM, 00675 sc_base + AM33_SIGCONTEXT_LAR); 00676 trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM, 00677 sc_base + AM33_SIGCONTEXT_LIR); 00678 trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM, 00679 sc_base + AM33_SIGCONTEXT_MDR); 00680 trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM, 00681 sc_base + AM33_SIGCONTEXT_MCVF); 00682 trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM, 00683 sc_base + AM33_SIGCONTEXT_MCRL); 00684 trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM, 00685 sc_base + AM33_SIGCONTEXT_MDRQ); 00686 00687 trad_frame_set_reg_addr (this_cache, E_SP_REGNUM, 00688 sc_base + AM33_SIGCONTEXT_SP); 00689 trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM, 00690 sc_base + AM33_SIGCONTEXT_EPSW); 00691 trad_frame_set_reg_addr (this_cache, E_PC_REGNUM, 00692 sc_base + AM33_SIGCONTEXT_PC); 00693 00694 fpubase = get_frame_memory_unsigned (this_frame, 00695 sc_base + AM33_SIGCONTEXT_FPUCONTEXT, 00696 4); 00697 if (fpubase) 00698 { 00699 for (i = 0; i < 32; i++) 00700 { 00701 trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i, 00702 fpubase + 4 * i); 00703 } 00704 trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32); 00705 } 00706 00707 trad_frame_set_id (this_cache, frame_id_build (sc_base, func)); 00708 } 00709 00710 /* AM33 GNU/Linux osabi has been recognized. 00711 Now's our chance to register our corefile handling. */ 00712 00713 static void 00714 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch) 00715 { 00716 linux_init_abi (info, gdbarch); 00717 00718 set_gdbarch_regset_from_core_section (gdbarch, 00719 am33_regset_from_core_section); 00720 set_solib_svr4_fetch_link_map_offsets 00721 (gdbarch, svr4_ilp32_fetch_link_map_offsets); 00722 00723 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe); 00724 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe); 00725 } 00726 00727 /* Provide a prototype to silence -Wmissing-prototypes. */ 00728 extern initialize_file_ftype _initialize_mn10300_linux_tdep; 00729 00730 void 00731 _initialize_mn10300_linux_tdep (void) 00732 { 00733 gdbarch_register_osabi (bfd_arch_mn10300, 0, 00734 GDB_OSABI_LINUX, am33_linux_init_osabi); 00735 } 00736
1.7.6.1
