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/* Internal interfaces for the GNU/Linux specific target code for gdbserver.
Copyright (C) 2002, 2004, 2005, 2007 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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifdef HAVE_THREAD_DB_H
#include <thread_db.h>
#endif
#ifdef HAVE_LINUX_REGSETS
typedef void (*regset_fill_func) (void *);
typedef void (*regset_store_func) (const void *);
enum regset_type {
GENERAL_REGS,
FP_REGS,
EXTENDED_REGS,
};
struct regset_info
{
int get_request, set_request;
int size;
enum regset_type type;
regset_fill_func fill_function;
regset_store_func store_function;
};
extern struct regset_info target_regsets[];
#endif
struct linux_target_ops
{
int num_regs;
int *regmap;
int (*cannot_fetch_register) (int);
/* Returns 0 if we can store the register, 1 if we can not
store the register, and 2 if failure to store the register
is acceptable. */
int (*cannot_store_register) (int);
CORE_ADDR (*get_pc) (void);
void (*set_pc) (CORE_ADDR newpc);
const unsigned char *breakpoint;
int breakpoint_len;
CORE_ADDR (*breakpoint_reinsert_addr) (void);
int decr_pc_after_break;
int (*breakpoint_at) (CORE_ADDR pc);
/* Watchpoint related functions. See target.h for comments. */
int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
int (*stopped_by_watchpoint) (void);
CORE_ADDR (*stopped_data_address) (void);
/* Whether to left-pad registers for PEEKUSR/POKEUSR if they are smaller
than an xfer unit. */
int left_pad_xfer;
};
extern struct linux_target_ops the_low_target;
#define get_process(inf) ((struct process_info *)(inf))
#define get_thread_process(thr) (get_process (inferior_target_data (thr)))
#define get_process_thread(proc) ((struct thread_info *) \
find_inferior_id (&all_threads, \
get_process (proc)->tid))
struct process_info
{
struct inferior_list_entry head;
int thread_known;
unsigned long lwpid;
unsigned long tid;
/* If this flag is set, the next SIGSTOP will be ignored (the process will
be immediately resumed). */
int stop_expected;
/* If this flag is set, the process is known to be stopped right now (stop
event already received in a wait()). */
int stopped;
/* When stopped is set, the last wait status recorded for this process. */
int last_status;
/* If this flag is set, we have sent a SIGSTOP to this process and are
waiting for it to stop. */
int sigstop_sent;
/* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
been reported. */
int status_pending_p;
int status_pending;
/* If this flag is set, the pending status is a (GDB-placed) breakpoint. */
int pending_is_breakpoint;
CORE_ADDR pending_stop_pc;
/* If this is non-zero, it is a breakpoint to be reinserted at our next
stop (SIGTRAP stops only). */
CORE_ADDR bp_reinsert;
/* If this flag is set, the last continue operation on this process
was a single-step. */
int stepping;
/* If this is non-zero, it points to a chain of signals which need to
be delivered to this process. */
struct pending_signals *pending_signals;
/* A link used when resuming. It is initialized from the resume request,
and then processed and cleared in linux_resume_one_process. */
struct thread_resume *resume;
#ifdef HAVE_THREAD_DB_H
/* The thread handle, used for e.g. TLS access. */
td_thrhandle_t th;
#endif
};
extern struct inferior_list all_processes;
void linux_attach_lwp (unsigned long pid, unsigned long tid);
int thread_db_init (void);
int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset,
CORE_ADDR load_module, CORE_ADDR *address);
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