mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
42a4f53d2b
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files.
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/* Native-dependent code for FreeBSD/riscv.
|
|
|
|
Copyright (C) 2018-2019 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 "defs.h"
|
|
#include "target.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ptrace.h>
|
|
#include <machine/reg.h>
|
|
|
|
#include "fbsd-nat.h"
|
|
#include "riscv-tdep.h"
|
|
#include "riscv-fbsd-tdep.h"
|
|
#include "inf-ptrace.h"
|
|
|
|
struct riscv_fbsd_nat_target final : public fbsd_nat_target
|
|
{
|
|
void fetch_registers (struct regcache *, int) override;
|
|
void store_registers (struct regcache *, int) override;
|
|
};
|
|
|
|
static riscv_fbsd_nat_target the_riscv_fbsd_nat_target;
|
|
|
|
/* Determine if PT_GETREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getregs_supplies (struct gdbarch *gdbarch, int regnum)
|
|
{
|
|
return ((regnum >= RISCV_RA_REGNUM && regnum <= RISCV_PC_REGNUM)
|
|
|| regnum == RISCV_CSR_SSTATUS_REGNUM);
|
|
}
|
|
|
|
/* Determine if PT_GETFPREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
|
|
{
|
|
return ((regnum >= RISCV_FIRST_FP_REGNUM && regnum <= RISCV_LAST_FP_REGNUM)
|
|
|| regnum == RISCV_CSR_FCSR_REGNUM);
|
|
}
|
|
|
|
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
|
|
for all registers. */
|
|
|
|
void
|
|
riscv_fbsd_nat_target::fetch_registers (struct regcache *regcache,
|
|
int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache->ptid ());
|
|
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
if (regnum == -1 || regnum == RISCV_ZERO_REGNUM)
|
|
regcache->raw_supply_zeroed (RISCV_ZERO_REGNUM);
|
|
if (regnum == -1 || getregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
regcache->supply_regset (&riscv_fbsd_gregset, regnum, ®s,
|
|
sizeof (regs));
|
|
}
|
|
|
|
if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct fpreg fpregs;
|
|
|
|
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
regcache->supply_regset (&riscv_fbsd_fpregset, regnum, &fpregs,
|
|
sizeof (fpregs));
|
|
}
|
|
}
|
|
|
|
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
|
|
this for all registers. */
|
|
|
|
void
|
|
riscv_fbsd_nat_target::store_registers (struct regcache *regcache,
|
|
int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache->ptid ());
|
|
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
if (regnum == -1 || getregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
regcache->collect_regset (&riscv_fbsd_gregset, regnum, ®s,
|
|
sizeof (regs));
|
|
|
|
if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't write registers"));
|
|
}
|
|
|
|
if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct fpreg fpregs;
|
|
|
|
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
regcache->collect_regset (&riscv_fbsd_fpregset, regnum, &fpregs,
|
|
sizeof (fpregs));
|
|
|
|
if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't write floating point status"));
|
|
}
|
|
}
|
|
|
|
void
|
|
_initialize_riscv_fbsd_nat (void)
|
|
{
|
|
add_inf_child_target (&the_riscv_fbsd_nat_target);
|
|
}
|