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/* Copyright (C) 1999-2024 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "regcache.h"
#include "arm-tdep.h"
#include "arm-linux-tdep.h"
#include "arch/arm-linux.h"
#include "aarch32-linux-nat.h"
/* Supply GP registers contents, stored in REGS, to REGCACHE. ARM_APCS_32
is true if the 32-bit mode is in use, otherwise, it is false. */
void
aarch32_gp_regcache_supply (struct regcache *regcache, uint32_t *regs,
int arm_apcs_32)
{
int regno;
for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
regcache->raw_supply (regno, ®s[regno]);
if (arm_apcs_32)
{
/* Clear reserved bits bit 20 to bit 23. */
regs[ARM_CPSR_GREGNUM] &= 0xff0fffff;
regcache->raw_supply (ARM_PS_REGNUM, ®s[ARM_CPSR_GREGNUM]);
}
else
regcache->raw_supply (ARM_PS_REGNUM, ®s[ARM_PC_REGNUM]);
regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
(regcache->arch (), regs[ARM_PC_REGNUM]);
regcache->raw_supply (ARM_PC_REGNUM, ®s[ARM_PC_REGNUM]);
}
/* Collect GP registers from REGCACHE to buffer REGS. ARM_APCS_32 is
true if the 32-bit mode is in use, otherwise, it is false. */
void
aarch32_gp_regcache_collect (const struct regcache *regcache, uint32_t *regs,
int arm_apcs_32)
{
int regno;
for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
if (REG_VALID == regcache->get_register_status (regno))
regcache->raw_collect (regno, ®s[regno]);
}
if (arm_apcs_32
&& REG_VALID == regcache->get_register_status (ARM_PS_REGNUM))
{
uint32_t cpsr = regs[ARM_CPSR_GREGNUM];
regcache->raw_collect (ARM_PS_REGNUM, ®s[ARM_CPSR_GREGNUM]);
/* Keep reserved bits bit 20 to bit 23. */
regs[ARM_CPSR_GREGNUM] = ((regs[ARM_CPSR_GREGNUM] & 0xff0fffff)
| (cpsr & 0x00f00000));
}
}
/* Supply VFP registers contents, stored in REGS, to REGCACHE.
VFP_REGISTER_COUNT is the number of VFP registers. */
void
aarch32_vfp_regcache_supply (struct regcache *regcache, gdb_byte *regs,
const int vfp_register_count)
{
int regno;
for (regno = 0; regno < vfp_register_count; regno++)
regcache->raw_supply (regno + ARM_D0_REGNUM, regs + regno * 8);
regcache->raw_supply (ARM_FPSCR_REGNUM, regs + 32 * 8);
}
/* Collect VFP registers from REGCACHE to buffer REGS.
VFP_REGISTER_COUNT is the number VFP registers. */
void
aarch32_vfp_regcache_collect (const struct regcache *regcache, gdb_byte *regs,
const int vfp_register_count)
{
int regno;
for (regno = 0; regno < vfp_register_count; regno++)
regcache->raw_collect (regno + ARM_D0_REGNUM, regs + regno * 8);
regcache->raw_collect (ARM_FPSCR_REGNUM, regs + 32 * 8);
}
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