| 1 | /* Machine independent support for Solaris 2 core files for GDB. |
| 2 | Copyright 1994 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | |
| 21 | /* Solaris comes with two flavours of core files, cores generated by |
| 22 | an ELF executable and cores generated by programs that were |
| 23 | run under BCP (the part of Solaris which allows it to run SunOS4 |
| 24 | a.out files). |
| 25 | This file combines the core register fetching from core-svr4.c |
| 26 | and sparc-nat.c to be able to read both flavours. */ |
| 27 | |
| 28 | #include "defs.h" |
| 29 | #undef gregset_t |
| 30 | #undef fpregset_t |
| 31 | |
| 32 | #include <time.h> |
| 33 | #include <sys/regset.h> |
| 34 | #include <sys/procfs.h> |
| 35 | #include <fcntl.h> |
| 36 | #include <errno.h> |
| 37 | #include <string.h> |
| 38 | |
| 39 | #include "inferior.h" |
| 40 | #include "target.h" |
| 41 | #include "command.h" |
| 42 | #include "gdbcore.h" |
| 43 | |
| 44 | void |
| 45 | fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) |
| 46 | char *core_reg_sect; |
| 47 | unsigned core_reg_size; |
| 48 | int which; |
| 49 | unsigned int reg_addr; /* Unused in this version */ |
| 50 | { |
| 51 | prgregset_t prgregset; |
| 52 | prfpregset_t prfpregset; |
| 53 | |
| 54 | if (which == 0) |
| 55 | { |
| 56 | if (core_reg_size == sizeof (prgregset)) |
| 57 | { |
| 58 | memcpy ((char *) &prgregset, core_reg_sect, sizeof (prgregset)); |
| 59 | supply_gregset (&prgregset); |
| 60 | } |
| 61 | else if (core_reg_size == sizeof (struct regs)) |
| 62 | { |
| 63 | #define gregs ((struct regs *)core_reg_sect) |
| 64 | /* G0 *always* holds 0. */ |
| 65 | *(int *)®isters[REGISTER_BYTE (0)] = 0; |
| 66 | |
| 67 | /* The globals and output registers. */ |
| 68 | memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1, |
| 69 | 15 * REGISTER_RAW_SIZE (G1_REGNUM)); |
| 70 | *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps; |
| 71 | *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc; |
| 72 | *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc; |
| 73 | *(int *)®isters[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y; |
| 74 | |
| 75 | /* My best guess at where to get the locals and input |
| 76 | registers is exactly where they usually are, right above |
| 77 | the stack pointer. If the core dump was caused by a bus error |
| 78 | from blowing away the stack pointer (as is possible) then this |
| 79 | won't work, but it's worth the try. */ |
| 80 | { |
| 81 | int sp; |
| 82 | |
| 83 | sp = *(int *)®isters[REGISTER_BYTE (SP_REGNUM)]; |
| 84 | if (0 != target_read_memory (sp, |
| 85 | ®isters[REGISTER_BYTE (L0_REGNUM)], |
| 86 | 16 * REGISTER_RAW_SIZE (L0_REGNUM))) |
| 87 | { |
| 88 | warning ("couldn't read input and local registers from core file\n"); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | else |
| 93 | { |
| 94 | warning ("wrong size gregset struct in core file"); |
| 95 | } |
| 96 | } |
| 97 | else if (which == 2) |
| 98 | { |
| 99 | if (core_reg_size == sizeof (prfpregset)) |
| 100 | { |
| 101 | memcpy ((char *) &prfpregset, core_reg_sect, sizeof (prfpregset)); |
| 102 | supply_fpregset (&prfpregset); |
| 103 | } |
| 104 | else if (core_reg_size >= sizeof (struct fpu)) |
| 105 | { |
| 106 | #define fpuregs ((struct fpu *) core_reg_sect) |
| 107 | memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr, |
| 108 | sizeof (fpuregs->fpu_fr)); |
| 109 | memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr, |
| 110 | sizeof (FPU_FSR_TYPE)); |
| 111 | } |
| 112 | else |
| 113 | { |
| 114 | warning ("wrong size fpregset struct in core file"); |
| 115 | } |
| 116 | } |
| 117 | } |