664 lines
20 KiB
C
664 lines
20 KiB
C
/* Common definitions for remote server for GDB.
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Copyright (C) 1993, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SERVER_H
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#define SERVER_H
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#include "config.h"
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#ifdef __MINGW32CE__
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#include "wincecompat.h"
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#endif
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <setjmp.h>
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_ALLOCA_H
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#include <alloca.h>
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#endif
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/* On some systems such as MinGW, alloca is declared in malloc.h
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(there is no alloca.h). */
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#if HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#if !HAVE_DECL_STRERROR
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#ifndef strerror
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extern char *strerror (int); /* X3.159-1989 4.11.6.2 */
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#endif
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#endif
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#if !HAVE_DECL_PERROR
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#ifndef perror
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extern void perror (const char *);
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#endif
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#endif
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#if !HAVE_DECL_MEMMEM
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extern void *memmem (const void *, size_t , const void *, size_t);
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#endif
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#if !HAVE_DECL_VASPRINTF
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extern int vasprintf(char **strp, const char *fmt, va_list ap);
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#endif
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#if !HAVE_DECL_VSNPRINTF
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int vsnprintf(char *str, size_t size, const char *format, va_list ap);
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#endif
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#ifndef ATTR_NORETURN
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#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
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#define ATTR_NORETURN __attribute__ ((noreturn))
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#else
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#define ATTR_NORETURN /* nothing */
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#endif
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#endif
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#ifndef ATTR_FORMAT
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#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
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#define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
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#else
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#define ATTR_FORMAT(type, x, y) /* nothing */
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#endif
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#endif
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#ifndef ATTR_MALLOC
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#if defined(__GNUC__) && (__GNUC__ >= 3)
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#define ATTR_MALLOC __attribute__ ((__malloc__))
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#else
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#define ATTR_MALLOC /* nothing */
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#endif
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#endif
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/* A type used for binary buffers. */
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typedef unsigned char gdb_byte;
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/* FIXME: This should probably be autoconf'd for. It's an integer type at
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least the size of a (void *). */
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typedef long long CORE_ADDR;
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typedef long long LONGEST;
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typedef unsigned long long ULONGEST;
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/* The ptid struct is a collection of the various "ids" necessary
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for identifying the inferior. This consists of the process id
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(pid), thread id (tid), and other fields necessary for uniquely
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identifying the inferior process/thread being debugged. When
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manipulating ptids, the constructors, accessors, and predicate
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declared in server.h should be used. These are as follows:
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ptid_build - Make a new ptid from a pid, lwp, and tid.
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pid_to_ptid - Make a new ptid from just a pid.
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ptid_get_pid - Fetch the pid component of a ptid.
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ptid_get_lwp - Fetch the lwp component of a ptid.
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ptid_get_tid - Fetch the tid component of a ptid.
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ptid_equal - Test to see if two ptids are equal.
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Please do NOT access the struct ptid members directly (except, of
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course, in the implementation of the above ptid manipulation
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functions). */
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struct ptid
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{
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/* Process id */
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int pid;
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/* Lightweight process id */
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long lwp;
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/* Thread id */
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long tid;
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};
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typedef struct ptid ptid_t;
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/* The -1 ptid, often used to indicate either an error condition or a
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"don't care" condition, i.e, "run all threads". */
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extern ptid_t minus_one_ptid;
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/* The null or zero ptid, often used to indicate no process. */
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extern ptid_t null_ptid;
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/* Attempt to find and return an existing ptid with the given PID,
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LWP, and TID components. If none exists, create a new one and
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return that. */
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ptid_t ptid_build (int pid, long lwp, long tid);
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/* Create a ptid from just a pid. */
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ptid_t pid_to_ptid (int pid);
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/* Fetch the pid (process id) component from a ptid. */
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int ptid_get_pid (ptid_t ptid);
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/* Fetch the lwp (lightweight process) component from a ptid. */
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long ptid_get_lwp (ptid_t ptid);
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/* Fetch the tid (thread id) component from a ptid. */
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long ptid_get_tid (ptid_t ptid);
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/* Compare two ptids to see if they are equal. */
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extern int ptid_equal (ptid_t p1, ptid_t p2);
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/* Return true if this ptid represents a process id. */
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extern int ptid_is_pid (ptid_t ptid);
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/* Generic information for tracking a list of ``inferiors'' - threads,
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processes, etc. */
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struct inferior_list
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{
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struct inferior_list_entry *head;
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struct inferior_list_entry *tail;
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};
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struct inferior_list_entry
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{
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ptid_t id;
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struct inferior_list_entry *next;
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};
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struct thread_info;
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struct process_info;
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struct regcache;
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#include "regcache.h"
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#include "gdb/signals.h"
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#include "gdb_signals.h"
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#include "target.h"
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#include "mem-break.h"
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struct thread_info
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{
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struct inferior_list_entry entry;
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void *target_data;
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void *regcache_data;
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/* The last resume GDB requested on this thread. */
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enum resume_kind last_resume_kind;
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/* The last wait status reported for this thread. */
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struct target_waitstatus last_status;
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/* Given `while-stepping', a thread may be collecting data for more
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than one tracepoint simultaneously. E.g.:
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ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs
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ff0002 INSN2
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ff0003 INSN3 <-- TP2, collect $regs
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ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs
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ff0005 INSN5
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Notice that when instruction INSN5 is reached, the while-stepping
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actions of both TP1 and TP3 are still being collected, and that TP2
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had been collected meanwhile. The whole range of ff0001-ff0005
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should be single-stepped, due to at least TP1's while-stepping
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action covering the whole range.
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On the other hand, the same tracepoint with a while-stepping action
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may be hit by more than one thread simultaneously, hence we can't
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keep the current step count in the tracepoint itself.
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This is the head of the list of the states of `while-stepping'
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tracepoint actions this thread is now collecting; NULL if empty.
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Each item in the list holds the current step of the while-stepping
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action. */
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struct wstep_state *while_stepping;
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};
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struct dll_info
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{
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struct inferior_list_entry entry;
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char *name;
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CORE_ADDR base_addr;
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};
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struct sym_cache;
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struct breakpoint;
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struct raw_breakpoint;
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struct fast_tracepoint_jump;
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struct process_info_private;
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struct process_info
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{
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struct inferior_list_entry head;
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/* Nonzero if this child process was attached rather than
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spawned. */
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int attached;
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/* True if GDB asked us to detach from this process, but we remained
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attached anyway. */
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int gdb_detached;
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/* The symbol cache. */
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struct sym_cache *symbol_cache;
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/* The list of memory breakpoints. */
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struct breakpoint *breakpoints;
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/* The list of raw memory breakpoints. */
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struct raw_breakpoint *raw_breakpoints;
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/* The list of installed fast tracepoints. */
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struct fast_tracepoint_jump *fast_tracepoint_jumps;
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/* Private target data. */
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struct process_info_private *private;
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};
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/* Return a pointer to the process that corresponds to the current
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thread (current_inferior). It is an error to call this if there is
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no current thread selected. */
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struct process_info *current_process (void);
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struct process_info *get_thread_process (struct thread_info *);
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/* Target-specific functions */
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void initialize_low ();
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/* From inferiors.c. */
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extern struct inferior_list all_processes;
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extern struct inferior_list all_threads;
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extern struct inferior_list all_dlls;
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extern int dlls_changed;
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void initialize_inferiors (void);
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void add_inferior_to_list (struct inferior_list *list,
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struct inferior_list_entry *new_inferior);
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void for_each_inferior (struct inferior_list *list,
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void (*action) (struct inferior_list_entry *));
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extern struct thread_info *current_inferior;
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void remove_inferior (struct inferior_list *list,
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struct inferior_list_entry *entry);
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void remove_thread (struct thread_info *thread);
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void add_thread (ptid_t ptid, void *target_data);
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struct process_info *add_process (int pid, int attached);
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void remove_process (struct process_info *process);
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struct process_info *find_process_pid (int pid);
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int have_started_inferiors_p (void);
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int have_attached_inferiors_p (void);
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struct thread_info *find_thread_ptid (ptid_t ptid);
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ptid_t thread_id_to_gdb_id (ptid_t);
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ptid_t thread_to_gdb_id (struct thread_info *);
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ptid_t gdb_id_to_thread_id (ptid_t);
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struct thread_info *gdb_id_to_thread (unsigned int);
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void clear_inferiors (void);
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struct inferior_list_entry *find_inferior
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(struct inferior_list *,
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int (*func) (struct inferior_list_entry *,
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void *),
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void *arg);
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struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
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ptid_t id);
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void *inferior_target_data (struct thread_info *);
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void set_inferior_target_data (struct thread_info *, void *);
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void *inferior_regcache_data (struct thread_info *);
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void set_inferior_regcache_data (struct thread_info *, void *);
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void add_pid_to_list (struct inferior_list *list, unsigned long pid);
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int pull_pid_from_list (struct inferior_list *list, unsigned long pid);
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void loaded_dll (const char *name, CORE_ADDR base_addr);
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void unloaded_dll (const char *name, CORE_ADDR base_addr);
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/* Public variables in server.c */
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extern ptid_t cont_thread;
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extern ptid_t general_thread;
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extern ptid_t step_thread;
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extern int server_waiting;
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extern int debug_threads;
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extern int debug_hw_points;
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extern int pass_signals[];
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extern jmp_buf toplevel;
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extern int disable_packet_vCont;
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extern int disable_packet_Tthread;
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extern int disable_packet_qC;
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extern int disable_packet_qfThreadInfo;
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extern int multi_process;
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extern int non_stop;
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#if USE_WIN32API
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#include <winsock2.h>
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typedef SOCKET gdb_fildes_t;
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#else
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typedef int gdb_fildes_t;
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#endif
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/* Functions from event-loop.c. */
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typedef void *gdb_client_data;
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typedef int (handler_func) (int, gdb_client_data);
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typedef int (callback_handler_func) (gdb_client_data);
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extern void delete_file_handler (gdb_fildes_t fd);
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extern void add_file_handler (gdb_fildes_t fd, handler_func *proc,
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gdb_client_data client_data);
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extern int append_callback_event (callback_handler_func *proc,
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gdb_client_data client_data);
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extern void delete_callback_event (int id);
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extern void start_event_loop (void);
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/* Functions from server.c. */
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extern int handle_serial_event (int err, gdb_client_data client_data);
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extern int handle_target_event (int err, gdb_client_data client_data);
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extern void push_event (ptid_t ptid, struct target_waitstatus *status);
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/* Functions from hostio.c. */
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extern int handle_vFile (char *, int, int *);
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/* Functions from hostio-errno.c. */
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extern void hostio_last_error_from_errno (char *own_buf);
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/* From remote-utils.c */
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extern int remote_debug;
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extern int noack_mode;
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extern int transport_is_reliable;
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int gdb_connected (void);
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ptid_t read_ptid (char *buf, char **obuf);
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char *write_ptid (char *buf, ptid_t ptid);
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int putpkt (char *buf);
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int putpkt_binary (char *buf, int len);
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int putpkt_notif (char *buf);
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int getpkt (char *buf);
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void remote_open (char *name);
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void remote_close (void);
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void write_ok (char *buf);
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void write_enn (char *buf);
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void initialize_async_io (void);
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void enable_async_io (void);
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void disable_async_io (void);
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void check_remote_input_interrupt_request (void);
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void convert_ascii_to_int (const char *from, unsigned char *to, int n);
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void convert_int_to_ascii (const unsigned char *from, char *to, int n);
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void new_thread_notify (int id);
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void dead_thread_notify (int id);
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void prepare_resume_reply (char *buf, ptid_t ptid,
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struct target_waitstatus *status);
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const char *decode_address_to_semicolon (CORE_ADDR *addrp, const char *start);
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void decode_address (CORE_ADDR *addrp, const char *start, int len);
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void decode_m_packet (char *from, CORE_ADDR * mem_addr_ptr,
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unsigned int *len_ptr);
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void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr,
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unsigned int *len_ptr, unsigned char **to_p);
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int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr,
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unsigned int *len_ptr, unsigned char **to_p);
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int decode_xfer_write (char *buf, int packet_len, char **annex,
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CORE_ADDR *offset, unsigned int *len,
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unsigned char *data);
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int decode_search_memory_packet (const char *buf, int packet_len,
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CORE_ADDR *start_addrp,
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CORE_ADDR *search_space_lenp,
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gdb_byte *pattern, unsigned int *pattern_lenp);
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int unhexify (char *bin, const char *hex, int count);
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int hexify (char *hex, const char *bin, int count);
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int remote_escape_output (const gdb_byte *buffer, int len,
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gdb_byte *out_buf, int *out_len,
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int out_maxlen);
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char *unpack_varlen_hex (char *buff, ULONGEST *result);
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void clear_symbol_cache (struct sym_cache **symcache_p);
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int look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb);
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int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc);
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void monitor_output (const char *msg);
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char *xml_escape_text (const char *text);
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/* Simple growing buffer. */
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struct buffer
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{
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char *buffer;
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size_t buffer_size; /* allocated size */
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size_t used_size; /* actually used size */
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};
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/* Append DATA of size SIZE to the end of BUFFER. Grows the buffer to
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accommodate the new data. */
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void buffer_grow (struct buffer *buffer, const char *data, size_t size);
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/* Release any memory held by BUFFER. */
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void buffer_free (struct buffer *buffer);
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/* Initialize BUFFER. BUFFER holds no memory afterwards. */
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void buffer_init (struct buffer *buffer);
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/* Return a pointer into BUFFER data, effectivelly transfering
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ownership of the buffer memory to the caller. Calling buffer_free
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afterwards has no effect on the returned data. */
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char* buffer_finish (struct buffer *buffer);
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/* Simple printf to BUFFER function. Current implemented formatters:
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%s - grow an xml escaped text in OBSTACK. */
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void buffer_xml_printf (struct buffer *buffer, const char *format, ...)
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ATTR_FORMAT (printf, 2, 3);
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#define buffer_grow_str(BUFFER,STRING) \
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buffer_grow (BUFFER, STRING, strlen (STRING))
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#define buffer_grow_str0(BUFFER,STRING) \
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buffer_grow (BUFFER, STRING, strlen (STRING) + 1)
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/* Functions from utils.c */
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void *xmalloc (size_t) ATTR_MALLOC;
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void *xrealloc (void *, size_t);
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void *xcalloc (size_t, size_t) ATTR_MALLOC;
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char *xstrdup (const char *) ATTR_MALLOC;
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int xsnprintf (char *str, size_t size, const char *format, ...)
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ATTR_FORMAT (printf, 3, 4);;
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void freeargv (char **argv);
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void perror_with_name (const char *string);
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void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
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void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
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void internal_error (const char *file, int line, const char *, ...)
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ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
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void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2);
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char *paddress (CORE_ADDR addr);
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char *pulongest (ULONGEST u);
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char *plongest (LONGEST l);
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char *phex_nz (ULONGEST l, int sizeof_l);
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|
char *pfildes (gdb_fildes_t fd);
|
|
|
|
#define gdb_assert(expr) \
|
|
((void) ((expr) ? 0 : \
|
|
(gdb_assert_fail (#expr, __FILE__, __LINE__, ASSERT_FUNCTION), 0)))
|
|
|
|
/* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
|
|
which contains the name of the function currently being defined.
|
|
This is broken in G++ before version 2.6.
|
|
C9x has a similar variable called __func__, but prefer the GCC one since
|
|
it demangles C++ function names. */
|
|
#if (GCC_VERSION >= 2004)
|
|
#define ASSERT_FUNCTION __PRETTY_FUNCTION__
|
|
#else
|
|
#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
|
|
#define ASSERT_FUNCTION __func__
|
|
#endif
|
|
#endif
|
|
|
|
/* This prints an "Assertion failed" message, and exits. */
|
|
#if defined (ASSERT_FUNCTION)
|
|
#define gdb_assert_fail(assertion, file, line, function) \
|
|
internal_error (file, line, "%s: Assertion `%s' failed.", \
|
|
function, assertion)
|
|
#else
|
|
#define gdb_assert_fail(assertion, file, line, function) \
|
|
internal_error (file, line, "Assertion `%s' failed.", \
|
|
assertion)
|
|
#endif
|
|
|
|
/* Maximum number of bytes to read/write at once. The value here
|
|
is chosen to fill up a packet (the headers account for the 32). */
|
|
#define MAXBUFBYTES(N) (((N)-32)/2)
|
|
|
|
/* Buffer sizes for transferring memory, registers, etc. Set to a constant
|
|
value to accomodate multiple register formats. This value must be at least
|
|
as large as the largest register set supported by gdbserver. */
|
|
#define PBUFSIZ 16384
|
|
|
|
/* Functions from tracepoint.c */
|
|
|
|
int in_process_agent_loaded (void);
|
|
|
|
void initialize_tracepoint (void);
|
|
|
|
extern int tracing;
|
|
extern int disconnected_tracing;
|
|
|
|
void tracepoint_look_up_symbols (void);
|
|
|
|
void stop_tracing (void);
|
|
|
|
int handle_tracepoint_general_set (char *own_buf);
|
|
int handle_tracepoint_query (char *own_buf);
|
|
|
|
int tracepoint_finished_step (struct thread_info *tinfo, CORE_ADDR stop_pc);
|
|
int tracepoint_was_hit (struct thread_info *tinfo, CORE_ADDR stop_pc);
|
|
|
|
void release_while_stepping_state_list (struct thread_info *tinfo);
|
|
|
|
extern int current_traceframe;
|
|
|
|
int in_readonly_region (CORE_ADDR addr, ULONGEST length);
|
|
int traceframe_read_mem (int tfnum, CORE_ADDR addr,
|
|
unsigned char *buf, ULONGEST length,
|
|
ULONGEST *nbytes);
|
|
int fetch_traceframe_registers (int tfnum,
|
|
struct regcache *regcache,
|
|
int regnum);
|
|
|
|
int traceframe_read_sdata (int tfnum, ULONGEST offset,
|
|
unsigned char *buf, ULONGEST length,
|
|
ULONGEST *nbytes);
|
|
|
|
/* If a thread is determined to be collecting a fast tracepoint, this
|
|
structure holds the collect status. */
|
|
|
|
struct fast_tpoint_collect_status
|
|
{
|
|
/* The tracepoint that is presently being collected. */
|
|
int tpoint_num;
|
|
CORE_ADDR tpoint_addr;
|
|
|
|
/* The address range in the jump pad of where the original
|
|
instruction the tracepoint jump was inserted was relocated
|
|
to. */
|
|
CORE_ADDR adjusted_insn_addr;
|
|
CORE_ADDR adjusted_insn_addr_end;
|
|
};
|
|
|
|
int fast_tracepoint_collecting (CORE_ADDR thread_area,
|
|
CORE_ADDR stop_pc,
|
|
struct fast_tpoint_collect_status *status);
|
|
void force_unlock_trace_buffer (void);
|
|
|
|
int handle_tracepoint_bkpts (struct thread_info *tinfo, CORE_ADDR stop_pc);
|
|
|
|
#ifdef IN_PROCESS_AGENT
|
|
void initialize_low_tracepoint (void);
|
|
void supply_fast_tracepoint_registers (struct regcache *regcache,
|
|
const unsigned char *regs);
|
|
void supply_static_tracepoint_registers (struct regcache *regcache,
|
|
const unsigned char *regs,
|
|
CORE_ADDR pc);
|
|
#else
|
|
void stop_tracing (void);
|
|
#endif
|
|
|
|
/* Bytecode compilation function vector. */
|
|
|
|
struct emit_ops
|
|
{
|
|
void (*emit_prologue) (void);
|
|
void (*emit_epilogue) (void);
|
|
void (*emit_add) (void);
|
|
void (*emit_sub) (void);
|
|
void (*emit_mul) (void);
|
|
void (*emit_lsh) (void);
|
|
void (*emit_rsh_signed) (void);
|
|
void (*emit_rsh_unsigned) (void);
|
|
void (*emit_ext) (int arg);
|
|
void (*emit_log_not) (void);
|
|
void (*emit_bit_and) (void);
|
|
void (*emit_bit_or) (void);
|
|
void (*emit_bit_xor) (void);
|
|
void (*emit_bit_not) (void);
|
|
void (*emit_equal) (void);
|
|
void (*emit_less_signed) (void);
|
|
void (*emit_less_unsigned) (void);
|
|
void (*emit_ref) (int size);
|
|
void (*emit_if_goto) (int *offset_p, int *size_p);
|
|
void (*emit_goto) (int *offset_p, int *size_p);
|
|
void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size);
|
|
void (*emit_const) (LONGEST num);
|
|
void (*emit_call) (CORE_ADDR fn);
|
|
void (*emit_reg) (int reg);
|
|
void (*emit_pop) (void);
|
|
void (*emit_stack_flush) (void);
|
|
void (*emit_zero_ext) (int arg);
|
|
void (*emit_swap) (void);
|
|
void (*emit_stack_adjust) (int n);
|
|
|
|
/* Emit code for a generic function that takes one fixed integer
|
|
argument and returns a 64-bit int (for instance, tsv getter). */
|
|
void (*emit_int_call_1) (CORE_ADDR fn, int arg1);
|
|
|
|
/* Emit code for a generic function that takes one fixed integer
|
|
argument and a 64-bit int from the top of the stack, and returns
|
|
nothing (for instance, tsv setter). */
|
|
void (*emit_void_call_2) (CORE_ADDR fn, int arg1);
|
|
};
|
|
|
|
/* Returns the address of the get_raw_reg function in the IPA. */
|
|
CORE_ADDR get_raw_reg_func_addr (void);
|
|
|
|
CORE_ADDR current_insn_ptr;
|
|
int emit_error;
|
|
|
|
/* Version information, from version.c. */
|
|
extern const char version[];
|
|
extern const char host_name[];
|
|
|
|
#endif /* SERVER_H */
|