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[binutils-gdb/blckswan.git] / gdb / aarch32-linux-nat.c
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1 /* Copyright (C) 1999-2022 Free Software Foundation, Inc.
3 This file is part of GDB.
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.
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.
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/>. */
18 #include "defs.h"
20 #include "regcache.h"
21 #include "arm-tdep.h"
22 #include "arm-linux-tdep.h"
23 #include "arch/arm-linux.h"
25 #include "aarch32-linux-nat.h"
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. */
30 void
31 aarch32_gp_regcache_supply (struct regcache *regcache, uint32_t *regs,
32 int arm_apcs_32)
34 int regno;
36 for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
37 regcache->raw_supply (regno, &regs[regno]);
39 if (arm_apcs_32)
41 /* Clear reserved bits bit 20 to bit 23. */
42 regs[ARM_CPSR_GREGNUM] &= 0xff0fffff;
43 regcache->raw_supply (ARM_PS_REGNUM, &regs[ARM_CPSR_GREGNUM]);
45 else
46 regcache->raw_supply (ARM_PS_REGNUM, &regs[ARM_PC_REGNUM]);
48 regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
49 (regcache->arch (), regs[ARM_PC_REGNUM]);
50 regcache->raw_supply (ARM_PC_REGNUM, &regs[ARM_PC_REGNUM]);
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. */
56 void
57 aarch32_gp_regcache_collect (const struct regcache *regcache, uint32_t *regs,
58 int arm_apcs_32)
60 int regno;
62 for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
64 if (REG_VALID == regcache->get_register_status (regno))
65 regcache->raw_collect (regno, &regs[regno]);
68 if (arm_apcs_32
69 && REG_VALID == regcache->get_register_status (ARM_PS_REGNUM))
71 uint32_t cpsr = regs[ARM_CPSR_GREGNUM];
73 regcache->raw_collect (ARM_PS_REGNUM, &regs[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));
80 /* Supply VFP registers contents, stored in REGS, to REGCACHE.
81 VFP_REGISTER_COUNT is the number of VFP registers. */
83 void
84 aarch32_vfp_regcache_supply (struct regcache *regcache, gdb_byte *regs,
85 const int vfp_register_count)
87 int regno;
89 for (regno = 0; regno < vfp_register_count; regno++)
90 regcache->raw_supply (regno + ARM_D0_REGNUM, regs + regno * 8);
92 regcache->raw_supply (ARM_FPSCR_REGNUM, regs + 32 * 8);
95 /* Collect VFP registers from REGCACHE to buffer REGS.
96 VFP_REGISTER_COUNT is the number VFP registers. */
98 void
99 aarch32_vfp_regcache_collect (const struct regcache *regcache, gdb_byte *regs,
100 const int vfp_register_count)
102 int regno;
104 for (regno = 0; regno < vfp_register_count; regno++)
105 regcache->raw_collect (regno + ARM_D0_REGNUM, regs + regno * 8);
107 regcache->raw_collect (ARM_FPSCR_REGNUM, regs + 32 * 8);