ba60b96371
With the AArch64 Scalable Matrix Extension we have a new TPIDR2 register, and it will be added to the existing NT_ARM_TLS register set. Kernel patches are being reviewed here: https://lore.kernel.org/linux-arm-kernel/20220818170111.351889-1-broonie@kernel.org/ From GDB's perspective, we handle it in a similar way to the existing TPIDR register. But we need to consider cases of systems that only have TPIDR and systems that have both TPIDR and TPIDR2. With that in mind, the following patch adds the required code to support TPIDR2 and turns the org.gnu.gdb.aarch64.tls feature into a dynamically-generated target description as opposed to a static target description containing only TPIDR. That means we can remove the gdb/features/aarch64-tls.xml file and replace the existing gdb/features/aarch64-tls.c auto-generated file with a new file that dynamically generates the target description containing either TPIDR alone or TPIDR and TPIDR2. In the future, when *BSD's start to support this register, they can just enable it as is being done for the AArch64 Linux target. The core file read/write code has been updated to support TPIDR2 as well. On GDBserver's side, there is a small change to the find_regno function to expose a non-throwing version of it. It always seemed strange to me how find_regno causes the whole operation to abort if it doesn't find a particular register name. The patch moves code from find_regno into find_regno_no_throw and makes find_regno call find_regno_no_throw instead. This allows us to do register name lookups to find a particular register number without risking erroring out if nothing is found. The patch also adjusts the feature detection code for aarch64-fbsd, since the infrastructure is shared amongst all aarch64 targets. I haven't added code to support TPIDR2 in aarch64-fbsd though, as I'm not sure when/if that will happen.
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/* Copyright (C) 2009-2022 Free Software Foundation, Inc.
|
|
Contributed by ARM Ltd.
|
|
|
|
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/>. */
|
|
|
|
#ifndef NAT_AARCH64_LINUX_H
|
|
#define NAT_AARCH64_LINUX_H
|
|
|
|
#include <signal.h>
|
|
|
|
/* Defines ps_err_e, struct ps_prochandle. */
|
|
#include "gdb_proc_service.h"
|
|
|
|
typedef int compat_int_t;
|
|
typedef unsigned int compat_uptr_t;
|
|
|
|
typedef int compat_time_t;
|
|
typedef int compat_timer_t;
|
|
typedef int compat_clock_t;
|
|
|
|
struct compat_timeval
|
|
{
|
|
compat_time_t tv_sec;
|
|
int tv_usec;
|
|
};
|
|
|
|
typedef union compat_sigval
|
|
{
|
|
compat_int_t sival_int;
|
|
compat_uptr_t sival_ptr;
|
|
} compat_sigval_t;
|
|
|
|
typedef struct compat_siginfo
|
|
{
|
|
int si_signo;
|
|
int si_errno;
|
|
int si_code;
|
|
|
|
union
|
|
{
|
|
int _pad[((128 / sizeof (int)) - 3)];
|
|
|
|
/* kill() */
|
|
struct
|
|
{
|
|
unsigned int _pid;
|
|
unsigned int _uid;
|
|
} _kill;
|
|
|
|
/* POSIX.1b timers */
|
|
struct
|
|
{
|
|
compat_timer_t _tid;
|
|
int _overrun;
|
|
compat_sigval_t _sigval;
|
|
} _timer;
|
|
|
|
/* POSIX.1b signals */
|
|
struct
|
|
{
|
|
unsigned int _pid;
|
|
unsigned int _uid;
|
|
compat_sigval_t _sigval;
|
|
} _rt;
|
|
|
|
/* SIGCHLD */
|
|
struct
|
|
{
|
|
unsigned int _pid;
|
|
unsigned int _uid;
|
|
int _status;
|
|
compat_clock_t _utime;
|
|
compat_clock_t _stime;
|
|
} _sigchld;
|
|
|
|
/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
|
|
struct
|
|
{
|
|
unsigned int _addr;
|
|
} _sigfault;
|
|
|
|
/* SIGPOLL */
|
|
struct
|
|
{
|
|
int _band;
|
|
int _fd;
|
|
} _sigpoll;
|
|
} _sifields;
|
|
} compat_siginfo_t;
|
|
|
|
#define cpt_si_pid _sifields._kill._pid
|
|
#define cpt_si_uid _sifields._kill._uid
|
|
#define cpt_si_timerid _sifields._timer._tid
|
|
#define cpt_si_overrun _sifields._timer._overrun
|
|
#define cpt_si_status _sifields._sigchld._status
|
|
#define cpt_si_utime _sifields._sigchld._utime
|
|
#define cpt_si_stime _sifields._sigchld._stime
|
|
#define cpt_si_ptr _sifields._rt._sigval.sival_ptr
|
|
#define cpt_si_addr _sifields._sigfault._addr
|
|
#define cpt_si_band _sifields._sigpoll._band
|
|
#define cpt_si_fd _sifields._sigpoll._fd
|
|
|
|
void aarch64_siginfo_from_compat_siginfo (siginfo_t *to,
|
|
compat_siginfo_t *from);
|
|
void aarch64_compat_siginfo_from_siginfo (compat_siginfo_t *to,
|
|
siginfo_t *from);
|
|
|
|
void aarch64_linux_prepare_to_resume (struct lwp_info *lwp);
|
|
|
|
void aarch64_linux_new_thread (struct lwp_info *lwp);
|
|
|
|
/* Function to call when a thread is being deleted. */
|
|
void aarch64_linux_delete_thread (struct arch_lwp_info *arch_lwp);
|
|
|
|
ps_err_e aarch64_ps_get_thread_area (struct ps_prochandle *ph,
|
|
lwpid_t lwpid, int idx, void **base,
|
|
int is_64bit_p);
|
|
|
|
/* Return the number of TLS registers in the NT_ARM_TLS set. This is only
|
|
used for aarch64 state. */
|
|
int aarch64_tls_register_count (int tid);
|
|
|
|
#endif /* NAT_AARCH64_LINUX_H */
|