| 1 | /* Copyright (C) 1999-2020 Free Software Foundation, Inc. |
| 2 | |
| 3 | This file is part of GDB. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include "defs.h" |
| 19 | |
| 20 | #include "regcache.h" |
| 21 | #include "arm-tdep.h" |
| 22 | #include "arm-linux-tdep.h" |
| 23 | #include "arch/arm-linux.h" |
| 24 | |
| 25 | #include "aarch32-linux-nat.h" |
| 26 | |
| 27 | /* Supply GP registers contents, stored in REGS, to REGCACHE. ARM_APCS_32 |
| 28 | is true if the 32-bit mode is in use, otherwise, it is false. */ |
| 29 | |
| 30 | void |
| 31 | aarch32_gp_regcache_supply (struct regcache *regcache, uint32_t *regs, |
| 32 | int arm_apcs_32) |
| 33 | { |
| 34 | int regno; |
| 35 | |
| 36 | for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) |
| 37 | regcache->raw_supply (regno, ®s[regno]); |
| 38 | |
| 39 | if (arm_apcs_32) |
| 40 | { |
| 41 | /* Clear reserved bits bit 20 to bit 23. */ |
| 42 | regs[ARM_CPSR_GREGNUM] &= 0xff0fffff; |
| 43 | regcache->raw_supply (ARM_PS_REGNUM, ®s[ARM_CPSR_GREGNUM]); |
| 44 | } |
| 45 | else |
| 46 | regcache->raw_supply (ARM_PS_REGNUM, ®s[ARM_PC_REGNUM]); |
| 47 | |
| 48 | regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove |
| 49 | (regcache->arch (), regs[ARM_PC_REGNUM]); |
| 50 | regcache->raw_supply (ARM_PC_REGNUM, ®s[ARM_PC_REGNUM]); |
| 51 | } |
| 52 | |
| 53 | /* Collect GP registers from REGCACHE to buffer REGS. ARM_APCS_32 is |
| 54 | true if the 32-bit mode is in use, otherwise, it is false. */ |
| 55 | |
| 56 | void |
| 57 | aarch32_gp_regcache_collect (const struct regcache *regcache, uint32_t *regs, |
| 58 | int arm_apcs_32) |
| 59 | { |
| 60 | int regno; |
| 61 | |
| 62 | for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++) |
| 63 | { |
| 64 | if (REG_VALID == regcache->get_register_status (regno)) |
| 65 | regcache->raw_collect (regno, ®s[regno]); |
| 66 | } |
| 67 | |
| 68 | if (arm_apcs_32 |
| 69 | && REG_VALID == regcache->get_register_status (ARM_PS_REGNUM)) |
| 70 | { |
| 71 | uint32_t cpsr = regs[ARM_CPSR_GREGNUM]; |
| 72 | |
| 73 | regcache->raw_collect (ARM_PS_REGNUM, ®s[ARM_CPSR_GREGNUM]); |
| 74 | /* Keep reserved bits bit 20 to bit 23. */ |
| 75 | regs[ARM_CPSR_GREGNUM] = ((regs[ARM_CPSR_GREGNUM] & 0xff0fffff) |
| 76 | | (cpsr & 0x00f00000)); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /* Supply VFP registers contents, stored in REGS, to REGCACHE. |
| 81 | VFP_REGISTER_COUNT is the number of VFP registers. */ |
| 82 | |
| 83 | void |
| 84 | aarch32_vfp_regcache_supply (struct regcache *regcache, gdb_byte *regs, |
| 85 | const int vfp_register_count) |
| 86 | { |
| 87 | int regno; |
| 88 | |
| 89 | for (regno = 0; regno < vfp_register_count; regno++) |
| 90 | regcache->raw_supply (regno + ARM_D0_REGNUM, regs + regno * 8); |
| 91 | |
| 92 | regcache->raw_supply (ARM_FPSCR_REGNUM, regs + 32 * 8); |
| 93 | } |
| 94 | |
| 95 | /* Collect VFP registers from REGCACHE to buffer REGS. |
| 96 | VFP_REGISTER_COUNT is the number VFP registers. */ |
| 97 | |
| 98 | void |
| 99 | aarch32_vfp_regcache_collect (const struct regcache *regcache, gdb_byte *regs, |
| 100 | const int vfp_register_count) |
| 101 | { |
| 102 | int regno; |
| 103 | |
| 104 | for (regno = 0; regno < vfp_register_count; regno++) |
| 105 | regcache->raw_collect (regno + ARM_D0_REGNUM, regs + regno * 8); |
| 106 | |
| 107 | regcache->raw_collect (ARM_FPSCR_REGNUM, regs + 32 * 8); |
| 108 | } |