mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-28 20:43:45 +08:00
214 lines
6.9 KiB
C
214 lines
6.9 KiB
C
/* Target-dependent code for GNU/Linux, architecture independent.
|
|
|
|
Copyright (C) 2009-2012 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 "gdbtypes.h"
|
|
#include "linux-tdep.h"
|
|
#include "auxv.h"
|
|
#include "target.h"
|
|
#include "elf/common.h"
|
|
#include "inferior.h"
|
|
|
|
static struct gdbarch_data *linux_gdbarch_data_handle;
|
|
|
|
struct linux_gdbarch_data
|
|
{
|
|
struct type *siginfo_type;
|
|
};
|
|
|
|
static void *
|
|
init_linux_gdbarch_data (struct gdbarch *gdbarch)
|
|
{
|
|
return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data);
|
|
}
|
|
|
|
static struct linux_gdbarch_data *
|
|
get_linux_gdbarch_data (struct gdbarch *gdbarch)
|
|
{
|
|
return gdbarch_data (gdbarch, linux_gdbarch_data_handle);
|
|
}
|
|
|
|
/* This function is suitable for architectures that don't
|
|
extend/override the standard siginfo structure. */
|
|
|
|
struct type *
|
|
linux_get_siginfo_type (struct gdbarch *gdbarch)
|
|
{
|
|
struct linux_gdbarch_data *linux_gdbarch_data;
|
|
struct type *int_type, *uint_type, *long_type, *void_ptr_type;
|
|
struct type *uid_type, *pid_type;
|
|
struct type *sigval_type, *clock_type;
|
|
struct type *siginfo_type, *sifields_type;
|
|
struct type *type;
|
|
|
|
linux_gdbarch_data = get_linux_gdbarch_data (gdbarch);
|
|
if (linux_gdbarch_data->siginfo_type != NULL)
|
|
return linux_gdbarch_data->siginfo_type;
|
|
|
|
int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
|
|
0, "int");
|
|
uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
|
|
1, "unsigned int");
|
|
long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
|
|
0, "long");
|
|
void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
|
|
|
|
/* sival_t */
|
|
sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
|
|
TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
|
|
append_composite_type_field (sigval_type, "sival_int", int_type);
|
|
append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
|
|
|
|
/* __pid_t */
|
|
pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
|
|
TYPE_LENGTH (int_type), "__pid_t");
|
|
TYPE_TARGET_TYPE (pid_type) = int_type;
|
|
TYPE_TARGET_STUB (pid_type) = 1;
|
|
|
|
/* __uid_t */
|
|
uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
|
|
TYPE_LENGTH (uint_type), "__uid_t");
|
|
TYPE_TARGET_TYPE (uid_type) = uint_type;
|
|
TYPE_TARGET_STUB (uid_type) = 1;
|
|
|
|
/* __clock_t */
|
|
clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
|
|
TYPE_LENGTH (long_type), "__clock_t");
|
|
TYPE_TARGET_TYPE (clock_type) = long_type;
|
|
TYPE_TARGET_STUB (clock_type) = 1;
|
|
|
|
/* _sifields */
|
|
sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
|
|
|
|
{
|
|
const int si_max_size = 128;
|
|
int si_pad_size;
|
|
int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
|
|
|
|
/* _pad */
|
|
if (gdbarch_ptr_bit (gdbarch) == 64)
|
|
si_pad_size = (si_max_size / size_of_int) - 4;
|
|
else
|
|
si_pad_size = (si_max_size / size_of_int) - 3;
|
|
append_composite_type_field (sifields_type, "_pad",
|
|
init_vector_type (int_type, si_pad_size));
|
|
}
|
|
|
|
/* _kill */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_pid", pid_type);
|
|
append_composite_type_field (type, "si_uid", uid_type);
|
|
append_composite_type_field (sifields_type, "_kill", type);
|
|
|
|
/* _timer */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_tid", int_type);
|
|
append_composite_type_field (type, "si_overrun", int_type);
|
|
append_composite_type_field (type, "si_sigval", sigval_type);
|
|
append_composite_type_field (sifields_type, "_timer", type);
|
|
|
|
/* _rt */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_pid", pid_type);
|
|
append_composite_type_field (type, "si_uid", uid_type);
|
|
append_composite_type_field (type, "si_sigval", sigval_type);
|
|
append_composite_type_field (sifields_type, "_rt", type);
|
|
|
|
/* _sigchld */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_pid", pid_type);
|
|
append_composite_type_field (type, "si_uid", uid_type);
|
|
append_composite_type_field (type, "si_status", int_type);
|
|
append_composite_type_field (type, "si_utime", clock_type);
|
|
append_composite_type_field (type, "si_stime", clock_type);
|
|
append_composite_type_field (sifields_type, "_sigchld", type);
|
|
|
|
/* _sigfault */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_addr", void_ptr_type);
|
|
append_composite_type_field (sifields_type, "_sigfault", type);
|
|
|
|
/* _sigpoll */
|
|
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
append_composite_type_field (type, "si_band", long_type);
|
|
append_composite_type_field (type, "si_fd", int_type);
|
|
append_composite_type_field (sifields_type, "_sigpoll", type);
|
|
|
|
/* struct siginfo */
|
|
siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
|
|
TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
|
|
append_composite_type_field (siginfo_type, "si_signo", int_type);
|
|
append_composite_type_field (siginfo_type, "si_errno", int_type);
|
|
append_composite_type_field (siginfo_type, "si_code", int_type);
|
|
append_composite_type_field_aligned (siginfo_type,
|
|
"_sifields", sifields_type,
|
|
TYPE_LENGTH (long_type));
|
|
|
|
linux_gdbarch_data->siginfo_type = siginfo_type;
|
|
|
|
return siginfo_type;
|
|
}
|
|
|
|
int
|
|
linux_has_shared_address_space (void)
|
|
{
|
|
/* Determine whether we are running on uClinux or normal Linux
|
|
kernel. */
|
|
CORE_ADDR dummy;
|
|
int target_is_uclinux;
|
|
|
|
target_is_uclinux
|
|
= (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0
|
|
&& target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0);
|
|
|
|
return target_is_uclinux;
|
|
}
|
|
|
|
/* This is how we want PTIDs from core files to be printed. */
|
|
|
|
static char *
|
|
linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
|
|
{
|
|
static char buf[80];
|
|
|
|
if (ptid_get_lwp (ptid) != 0)
|
|
{
|
|
snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid));
|
|
return buf;
|
|
}
|
|
|
|
return normal_pid_to_str (ptid);
|
|
}
|
|
|
|
/* To be called from the various GDB_OSABI_LINUX handlers for the
|
|
various GNU/Linux architectures and machine types. */
|
|
|
|
void
|
|
linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str);
|
|
}
|
|
|
|
void
|
|
_initialize_linux_tdep (void)
|
|
{
|
|
linux_gdbarch_data_handle =
|
|
gdbarch_data_register_post_init (init_linux_gdbarch_data);
|
|
}
|