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aarch32-linux-nat.c
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1/* Copyright (C) 1999-2023 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
30void
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, &regs[regno]);
38
39 if (arm_apcs_32)
40 {
41 /* Clear reserved bits bit 20 to bit 23. */
42 regs[ARM_CPSR_GREGNUM] &= 0xff0fffff;
44 }
45 else
47
49 (regcache->arch (), regs[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
56void
57aarch32_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, &regs[regno]);
66 }
67
68 if (arm_apcs_32
70 {
71 uint32_t cpsr = regs[ARM_CPSR_GREGNUM];
72
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
83void
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
98void
99aarch32_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}
void aarch32_gp_regcache_collect(const struct regcache *regcache, uint32_t *regs, int arm_apcs_32)
void aarch32_gp_regcache_supply(struct regcache *regcache, uint32_t *regs, int arm_apcs_32)
void aarch32_vfp_regcache_collect(const struct regcache *regcache, gdb_byte *regs, const int vfp_register_count)
void aarch32_vfp_regcache_supply(struct regcache *regcache, gdb_byte *regs, const int vfp_register_count)
#define ARM_CPSR_GREGNUM
Definition arm-linux.h:24
bool arm_apcs_32
Definition arm-tdep.c:598
@ ARM_PC_REGNUM
Definition arm.h:46
@ ARM_FPSCR_REGNUM
Definition arm.h:64
@ ARM_PS_REGNUM
Definition arm.h:52
@ ARM_D0_REGNUM
Definition arm.h:62
@ ARM_A1_REGNUM
Definition arm.h:40
gdbarch * arch() const
Definition regcache.c:231
void raw_collect(int regnum, void *buf) const override
Definition regcache.c:1127
void raw_supply(int regnum, const void *buf) override
Definition regcache.c:1062
enum register_status get_register_status(int regnum) const override
Definition regcache.c:304
CORE_ADDR gdbarch_addr_bits_remove(struct gdbarch *gdbarch, CORE_ADDR addr)
Definition gdbarch.c:3152