| 1 | /* PPC linux native support. |
| 2 | Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "frame.h" |
| 23 | #include "inferior.h" |
| 24 | #include "gdbcore.h" |
| 25 | #include "regcache.h" |
| 26 | |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/param.h> |
| 29 | #include <signal.h> |
| 30 | #include <sys/user.h> |
| 31 | #include <sys/ioctl.h> |
| 32 | #include <sys/wait.h> |
| 33 | #include <fcntl.h> |
| 34 | #include <sys/procfs.h> |
| 35 | |
| 36 | /* Prototypes for supply_gregset etc. */ |
| 37 | #include "gregset.h" |
| 38 | |
| 39 | int |
| 40 | kernel_u_size (void) |
| 41 | { |
| 42 | return (sizeof (struct user)); |
| 43 | } |
| 44 | |
| 45 | static int regmap[] = |
| 46 | {PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7, |
| 47 | PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15, |
| 48 | PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23, |
| 49 | PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31, |
| 50 | PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14, |
| 51 | PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30, |
| 52 | PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46, |
| 53 | PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62, |
| 54 | PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ}; |
| 55 | |
| 56 | int |
| 57 | ppc_register_u_addr (int ustart, int regnum) |
| 58 | { |
| 59 | return (ustart + 4 * regmap[regnum]); |
| 60 | } |
| 61 | |
| 62 | void |
| 63 | supply_gregset (gdb_gregset_t *gregsetp) |
| 64 | { |
| 65 | int regi; |
| 66 | register elf_greg_t *regp = (elf_greg_t *) gregsetp; |
| 67 | |
| 68 | for (regi = 0; regi < 32; regi++) |
| 69 | supply_register (regi, (char *) (regp + regi)); |
| 70 | |
| 71 | for (regi = FIRST_UISA_SP_REGNUM; regi <= LAST_UISA_SP_REGNUM; regi++) |
| 72 | supply_register (regi, (char *) (regp + regmap[regi])); |
| 73 | } |
| 74 | |
| 75 | void |
| 76 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
| 77 | { |
| 78 | int regi; |
| 79 | elf_greg_t *regp = (elf_greg_t *) gregsetp; |
| 80 | |
| 81 | #define COPY_REG(_idx_,_regi_) \ |
| 82 | if ((regno == -1) || regno == _regi_) \ |
| 83 | memcpy (regp + _idx_, ®isters[REGISTER_BYTE (_regi_)], \ |
| 84 | REGISTER_RAW_SIZE (_regi_)) |
| 85 | |
| 86 | for (regi = 0; regi < 32; regi++) |
| 87 | { |
| 88 | COPY_REG (regmap[regi], regi); |
| 89 | } |
| 90 | |
| 91 | for (regi = FIRST_UISA_SP_REGNUM; regi <= LAST_UISA_SP_REGNUM; regi++) |
| 92 | { |
| 93 | COPY_REG (regmap[regi], regi); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | void |
| 98 | supply_fpregset (gdb_fpregset_t * fpregsetp) |
| 99 | { |
| 100 | int regi; |
| 101 | for (regi = 0; regi < 32; regi++) |
| 102 | { |
| 103 | supply_register (FP0_REGNUM + regi, (char *) (*fpregsetp + regi)); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /* Given a pointer to a floating point register set in /proc format |
| 108 | (fpregset_t *), update the register specified by REGNO from gdb's idea |
| 109 | of the current floating point register set. If REGNO is -1, update |
| 110 | them all. */ |
| 111 | |
| 112 | void |
| 113 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
| 114 | { |
| 115 | int regi; |
| 116 | char *to; |
| 117 | char *from; |
| 118 | |
| 119 | for (regi = 0; regi < 32; regi++) |
| 120 | { |
| 121 | if ((regno == -1) || (regno == FP0_REGNUM + regi)) |
| 122 | { |
| 123 | from = (char *) ®isters[REGISTER_BYTE (FP0_REGNUM + regi)]; |
| 124 | to = (char *) (*fpregsetp + regi); |
| 125 | memcpy (to, from, REGISTER_RAW_SIZE (FP0_REGNUM + regi)); |
| 126 | } |
| 127 | } |
| 128 | } |