mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* Target-dependent code for GNU/Linux on Xtensa processors.
|
|
|
|
Copyright (C) 2007-2024 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 "defs.h"
|
|
#include "xtensa-tdep.h"
|
|
#include "osabi.h"
|
|
#include "linux-tdep.h"
|
|
#include "solib-svr4.h"
|
|
#include "symtab.h"
|
|
#include "gdbarch.h"
|
|
|
|
/* This enum represents the signals' numbers on the Xtensa
|
|
architecture. It just contains the signal definitions which are
|
|
different from the generic implementation.
|
|
|
|
It is derived from the file <arch/xtensa/include/uapi/asm/signal.h>,
|
|
from the Linux kernel tree. */
|
|
|
|
enum
|
|
{
|
|
XTENSA_LINUX_SIGRTMIN = 32,
|
|
XTENSA_LINUX_SIGRTMAX = 63,
|
|
};
|
|
|
|
/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
|
|
gdbarch.h. */
|
|
|
|
static enum gdb_signal
|
|
xtensa_linux_gdb_signal_from_target (struct gdbarch *gdbarch,
|
|
int signal)
|
|
{
|
|
if (signal >= XTENSA_LINUX_SIGRTMIN && signal <= XTENSA_LINUX_SIGRTMAX)
|
|
{
|
|
int offset = signal - XTENSA_LINUX_SIGRTMIN;
|
|
|
|
if (offset == 0)
|
|
return GDB_SIGNAL_REALTIME_32;
|
|
else
|
|
return (enum gdb_signal) (offset - 1
|
|
+ (int) GDB_SIGNAL_REALTIME_33);
|
|
}
|
|
else if (signal > XTENSA_LINUX_SIGRTMAX)
|
|
return GDB_SIGNAL_UNKNOWN;
|
|
|
|
return linux_gdb_signal_from_target (gdbarch, signal);
|
|
}
|
|
|
|
/* Implementation of `gdbarch_gdb_signal_to_target', as defined in
|
|
gdbarch.h. */
|
|
|
|
static int
|
|
xtensa_linux_gdb_signal_to_target (struct gdbarch *gdbarch,
|
|
enum gdb_signal signal)
|
|
{
|
|
switch (signal)
|
|
{
|
|
/* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>,
|
|
therefore we have to handle it here. */
|
|
case GDB_SIGNAL_REALTIME_32:
|
|
return XTENSA_LINUX_SIGRTMIN;
|
|
|
|
/* GDB_SIGNAL_REALTIME_64 is not valid on Xtensa. */
|
|
case GDB_SIGNAL_REALTIME_64:
|
|
return -1;
|
|
}
|
|
|
|
/* GDB_SIGNAL_REALTIME_33 to _63 are continuous.
|
|
|
|
Xtensa does not have _64. */
|
|
if (signal >= GDB_SIGNAL_REALTIME_33
|
|
&& signal <= GDB_SIGNAL_REALTIME_63)
|
|
{
|
|
int offset = signal - GDB_SIGNAL_REALTIME_33;
|
|
|
|
return XTENSA_LINUX_SIGRTMIN + 1 + offset;
|
|
}
|
|
|
|
return linux_gdb_signal_to_target (gdbarch, signal);
|
|
}
|
|
|
|
/* OS specific initialization of gdbarch. */
|
|
|
|
static void
|
|
xtensa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
xtensa_gdbarch_tdep *tdep = gdbarch_tdep<xtensa_gdbarch_tdep> (gdbarch);
|
|
|
|
if (tdep->num_nopriv_regs < tdep->num_regs)
|
|
{
|
|
tdep->num_pseudo_regs += tdep->num_regs - tdep->num_nopriv_regs;
|
|
tdep->num_regs = tdep->num_nopriv_regs;
|
|
|
|
set_gdbarch_num_regs (gdbarch, tdep->num_regs);
|
|
set_gdbarch_num_pseudo_regs (gdbarch, tdep->num_pseudo_regs);
|
|
}
|
|
|
|
linux_init_abi (info, gdbarch, 0);
|
|
|
|
set_solib_svr4_fetch_link_map_offsets
|
|
(gdbarch, linux_ilp32_fetch_link_map_offsets);
|
|
|
|
set_gdbarch_gdb_signal_from_target (gdbarch,
|
|
xtensa_linux_gdb_signal_from_target);
|
|
set_gdbarch_gdb_signal_to_target (gdbarch,
|
|
xtensa_linux_gdb_signal_to_target);
|
|
|
|
/* Enable TLS support. */
|
|
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
|
svr4_fetch_objfile_link_map);
|
|
}
|
|
|
|
void _initialize_xtensa_linux_tdep ();
|
|
void
|
|
_initialize_xtensa_linux_tdep ()
|
|
{
|
|
gdbarch_register_osabi (bfd_arch_xtensa, bfd_mach_xtensa, GDB_OSABI_LINUX,
|
|
xtensa_linux_init_abi);
|
|
}
|