| 1 | /* Machine independent support for Solaris 2 core files for GDB. |
| 2 | Copyright 1994, 2000 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | |
| 22 | /* Solaris comes with two flavours of core files, cores generated by |
| 23 | an ELF executable and cores generated by programs that were |
| 24 | run under BCP (the part of Solaris which allows it to run SunOS4 |
| 25 | a.out files). |
| 26 | This file combines the core register fetching from core-regset.c |
| 27 | and sparc-nat.c to be able to read both flavours. */ |
| 28 | |
| 29 | /* for Sparc64 cross Sparc32 */ |
| 30 | #define _SYSCALL32 |
| 31 | #include "defs.h" |
| 32 | |
| 33 | #if defined (__sparcv9) |
| 34 | /* Fails to get included by the Solaris system header files. */ |
| 35 | # include <v9/sys/privregs.h> |
| 36 | #endif |
| 37 | |
| 38 | #include <time.h> |
| 39 | #include <sys/types.h> |
| 40 | #include <sys/regset.h> |
| 41 | #include <sys/procfs.h> |
| 42 | #include <fcntl.h> |
| 43 | #include <errno.h> |
| 44 | #include "gdb_string.h" |
| 45 | |
| 46 | #include "inferior.h" |
| 47 | #include "target.h" |
| 48 | #include "command.h" |
| 49 | #include "gdbcore.h" |
| 50 | |
| 51 | /* Prototypes for supply_gregset etc. */ |
| 52 | #include "gregset.h" |
| 53 | |
| 54 | static void fetch_core_registers (char *, unsigned, int, CORE_ADDR); |
| 55 | |
| 56 | /* Fetch registers from core file data pointed to by CORE_REG_SECT. When |
| 57 | WHICH is 0, the the general register set is fetched; when WHICH is |
| 58 | 2, the floating point registers are fetched. CORE_REG_SIZE is used |
| 59 | to validate the size of the data pointed to by CORE_REG_SECT. REG_ADDR |
| 60 | is unused. */ |
| 61 | |
| 62 | static void |
| 63 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, |
| 64 | CORE_ADDR reg_addr) |
| 65 | { |
| 66 | int i; |
| 67 | |
| 68 | if (which == 0) |
| 69 | { |
| 70 | prgregset_t prgregset; |
| 71 | |
| 72 | if (core_reg_size == sizeof (prgregset_t)) |
| 73 | { |
| 74 | memcpy ((char *) &prgregset, core_reg_sect, sizeof (prgregset)); |
| 75 | supply_gregset (&prgregset); |
| 76 | } |
| 77 | #if defined (HAVE_PRGREGSET32_T) |
| 78 | /* 32-bit corefile, 64-bit debugger. */ |
| 79 | else if (core_reg_size == sizeof (prgregset32_t)) |
| 80 | { |
| 81 | prgreg32_t *core_gregs; |
| 82 | |
| 83 | /* Can't use memcpy here, because the core file contains |
| 84 | 32-bit regs; supply_register expects 64-bit regs. */ |
| 85 | core_gregs = (prgreg32_t *) core_reg_sect; |
| 86 | for (i = 0; i < NPRGREG; i++) |
| 87 | prgregset[i] = core_gregs[i]; |
| 88 | |
| 89 | supply_gregset (&prgregset); |
| 90 | } |
| 91 | #endif /* HAVE_PRGREGSET32_T */ |
| 92 | else if (core_reg_size == sizeof (struct regs)) |
| 93 | { |
| 94 | struct regs *gregs = (struct regs *) core_reg_sect; |
| 95 | |
| 96 | /* G0 *always* holds 0. */ |
| 97 | *(int *) ®isters[REGISTER_BYTE (0)] = 0; |
| 98 | |
| 99 | /* The globals and output registers. */ |
| 100 | memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1, |
| 101 | 15 * REGISTER_RAW_SIZE (G1_REGNUM)); |
| 102 | *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps; |
| 103 | *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc; |
| 104 | *(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc; |
| 105 | *(int *) ®isters[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y; |
| 106 | |
| 107 | /* My best guess at where to get the locals and input |
| 108 | registers is exactly where they usually are, right above |
| 109 | the stack pointer. If the core dump was caused by a bus error |
| 110 | from blowing away the stack pointer (as is possible) then this |
| 111 | won't work, but it's worth the try. */ |
| 112 | { |
| 113 | int sp; |
| 114 | |
| 115 | sp = *(int *) ®isters[REGISTER_BYTE (SP_REGNUM)]; |
| 116 | if (0 != target_read_memory (sp, |
| 117 | ®isters[REGISTER_BYTE (L0_REGNUM)], |
| 118 | 16 * REGISTER_RAW_SIZE (L0_REGNUM))) |
| 119 | { |
| 120 | warning ("couldn't read input and local registers from core file\n"); |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | else |
| 125 | { |
| 126 | warning ("wrong size gregset struct in core file"); |
| 127 | } |
| 128 | } |
| 129 | else if (which == 2) |
| 130 | { |
| 131 | prfpregset_t prfpregset; |
| 132 | |
| 133 | if (core_reg_size == sizeof (prfpregset_t)) |
| 134 | { |
| 135 | memcpy ((char *) &prfpregset, core_reg_sect, sizeof (prfpregset)); |
| 136 | supply_fpregset (&prfpregset); |
| 137 | } |
| 138 | #if defined (HAVE_PRFPREGSET32_T) |
| 139 | /* 32-bit corefile, 64-bit debugger. */ |
| 140 | else if (core_reg_size == sizeof (prfpregset32_t)) |
| 141 | { |
| 142 | prfpregset32_t *core_fpregset; |
| 143 | |
| 144 | /* Can't use memcpy here, because the core file contains |
| 145 | 32-bit regs; supply_fpregset expects 64-bit regs. */ |
| 146 | |
| 147 | core_fpregset = (prfpregset32_t *) core_reg_sect; |
| 148 | for (i = 0; i < 16; i++) |
| 149 | prfpregset.pr_fr.pr_dregs[i] = core_fpregset->pr_fr.pr_dregs[i]; |
| 150 | while (i < 32) |
| 151 | prfpregset.pr_fr.pr_dregs[i++] = 0; |
| 152 | |
| 153 | prfpregset.pr_fsr = core_fpregset->pr_fsr; |
| 154 | prfpregset.pr_qcnt = core_fpregset->pr_qcnt; |
| 155 | prfpregset.pr_q_entrysize = core_fpregset->pr_q_entrysize; |
| 156 | prfpregset.pr_en = core_fpregset->pr_en; |
| 157 | /* We will not use the pr_q array. */ |
| 158 | |
| 159 | supply_fpregset (&prfpregset); |
| 160 | } |
| 161 | #endif /* HAVE_PRFPREGSET32_T */ |
| 162 | else if (core_reg_size >= sizeof (struct fpu)) |
| 163 | { |
| 164 | struct fpu *fpuregs = (struct fpu *) core_reg_sect; |
| 165 | |
| 166 | memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr, |
| 167 | sizeof (fpuregs->fpu_fr)); |
| 168 | memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr, |
| 169 | sizeof (FPU_FSR_TYPE)); |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | warning ("wrong size fpregset struct in core file"); |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | \f |
| 178 | |
| 179 | /* Register that we are able to handle solaris core file formats. */ |
| 180 | |
| 181 | static struct core_fns solaris_core_fns = |
| 182 | { |
| 183 | bfd_target_elf_flavour, /* core_flavour */ |
| 184 | default_check_format, /* check_format */ |
| 185 | default_core_sniffer, /* core_sniffer */ |
| 186 | fetch_core_registers, /* core_read_registers */ |
| 187 | NULL /* next */ |
| 188 | }; |
| 189 | |
| 190 | void |
| 191 | _initialize_core_solaris (void) |
| 192 | { |
| 193 | add_core_fns (&solaris_core_fns); |
| 194 | } |