| 1 | /* Target-dependent code for ARM BSD's. |
| 2 | |
| 3 | Copyright (C) 2006-2015 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "osabi.h" |
| 22 | #include "regcache.h" |
| 23 | #include "regset.h" |
| 24 | |
| 25 | #include "arm-tdep.h" |
| 26 | |
| 27 | /* Core file support. */ |
| 28 | |
| 29 | /* Sizeof `struct reg' in <machine/reg.h>. */ |
| 30 | #define ARMBSD_SIZEOF_GREGS (17 * 4) |
| 31 | |
| 32 | /* Sizeof `struct fpreg' in <machine/reg.h. */ |
| 33 | #define ARMBSD_SIZEOF_FPREGS ((1 + (8 * 3)) * 4) |
| 34 | |
| 35 | static int |
| 36 | armbsd_fpreg_offset (int regnum) |
| 37 | { |
| 38 | if (regnum == ARM_FPS_REGNUM) |
| 39 | return 0; |
| 40 | |
| 41 | return 4 + (regnum - ARM_F0_REGNUM) * 12; |
| 42 | } |
| 43 | |
| 44 | /* Supply register REGNUM from the buffer specified by FPREGS and LEN |
| 45 | in the floating-point register set REGSET to register cache |
| 46 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| 47 | |
| 48 | static void |
| 49 | armbsd_supply_fpregset (const struct regset *regset, |
| 50 | struct regcache *regcache, |
| 51 | int regnum, const void *fpregs, size_t len) |
| 52 | { |
| 53 | const gdb_byte *regs = (const gdb_byte *) fpregs; |
| 54 | int i; |
| 55 | |
| 56 | gdb_assert (len >= ARMBSD_SIZEOF_FPREGS); |
| 57 | |
| 58 | for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++) |
| 59 | { |
| 60 | if (regnum == i || regnum == -1) |
| 61 | regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i)); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | /* Supply register REGNUM from the buffer specified by GREGS and LEN |
| 66 | in the general-purpose register set REGSET to register cache |
| 67 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| 68 | |
| 69 | static void |
| 70 | armbsd_supply_gregset (const struct regset *regset, |
| 71 | struct regcache *regcache, |
| 72 | int regnum, const void *gregs, size_t len) |
| 73 | { |
| 74 | const gdb_byte *regs = (const gdb_byte *) gregs; |
| 75 | int i; |
| 76 | |
| 77 | gdb_assert (len >= ARMBSD_SIZEOF_GREGS); |
| 78 | |
| 79 | for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++) |
| 80 | { |
| 81 | if (regnum == i || regnum == -1) |
| 82 | regcache_raw_supply (regcache, i, regs + i * 4); |
| 83 | } |
| 84 | |
| 85 | if (regnum == ARM_PS_REGNUM || regnum == -1) |
| 86 | regcache_raw_supply (regcache, i, regs + 16 * 4); |
| 87 | |
| 88 | if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS) |
| 89 | { |
| 90 | regs += ARMBSD_SIZEOF_GREGS; |
| 91 | len -= ARMBSD_SIZEOF_GREGS; |
| 92 | armbsd_supply_fpregset (regset, regcache, regnum, regs, len); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /* ARM register sets. */ |
| 97 | |
| 98 | static const struct regset armbsd_gregset = |
| 99 | { |
| 100 | NULL, |
| 101 | armbsd_supply_gregset, |
| 102 | NULL, |
| 103 | REGSET_VARIABLE_SIZE |
| 104 | }; |
| 105 | |
| 106 | static const struct regset armbsd_fpregset = |
| 107 | { |
| 108 | NULL, |
| 109 | armbsd_supply_fpregset |
| 110 | }; |
| 111 | |
| 112 | /* Iterate over supported core file register note sections. */ |
| 113 | |
| 114 | void |
| 115 | armbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, |
| 116 | iterate_over_regset_sections_cb *cb, |
| 117 | void *cb_data, |
| 118 | const struct regcache *regcache) |
| 119 | { |
| 120 | cb (".reg", ARMBSD_SIZEOF_GREGS, &armbsd_gregset, NULL, cb_data); |
| 121 | cb (".reg2", ARMBSD_SIZEOF_FPREGS, &armbsd_fpregset, NULL, cb_data); |
| 122 | } |