mirror of
https://sourceware.org/git/binutils-gdb.git
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0f3fafde68
* monitor.c (init_base_monitor_ops): Likewise. * ppc-bdm.c (init_bdm_ppc_ops): Likewise. * remote-array.c (init_array_ops): Likewise. * remote-e7000.c (init_e7000_ops): Likewise. * remote-es.c (init_es1800_ops): Likewise. (init_es1800_child_ops): Likewise. * remote-rdp.c (init_remote_rdp_ops): Likewise. * remote-sim.c (init_gdbsim_ops): Likewise. * remote-st.c (init_st2000_ops): Likewise. * sol-thread.c (init_sol_core_ops): Likewise. (init_sol_thread_ops): Likewise. * v850ice.c (init_850ice_ops): Likewise. * win32-nat.c (init_child_ops): Likewise. * wince.c (init_child_ops): Likewise.
2224 lines
60 KiB
C
2224 lines
60 KiB
C
/* Target-vector operations for controlling win32 child processes, for GDB.
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Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free
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Software Foundation, Inc.
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Contributed by Cygnus Solutions, A Red Hat Company.
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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 2 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 eve nthe 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Originally by Steve Chamberlain, sac@cygnus.com */
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/* We assume we're being built with and will be used for cygwin. */
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#include "defs.h"
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#include "tm.h" /* required for SSE registers */
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#include "frame.h" /* required by inferior.h */
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#include "inferior.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "completer.h"
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#include "regcache.h"
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#include "top.h"
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#include "i386-tdep.h"
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#include <signal.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <imagehlp.h>
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#include <sys/cygwin.h>
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#include "buildsym.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "gdb_string.h"
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#include "gdbthread.h"
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#include "gdbcmd.h"
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#include <sys/param.h>
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#include <unistd.h>
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/* The ui's event loop. */
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extern int (*ui_loop_hook) (int signo);
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/* If we're not using the old Cygwin header file set, define the
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following which never should have been in the generic Win32 API
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headers in the first place since they were our own invention... */
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#ifndef _GNU_H_WINDOWS_H
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enum
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{
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FLAG_TRACE_BIT = 0x100,
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CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
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};
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#endif
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#include <sys/procfs.h>
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#include <psapi.h>
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#ifdef HAVE_SSE_REGS
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#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
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| CONTEXT_EXTENDED_REGISTERS
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#else
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#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS
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#endif
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static unsigned dr[8];
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static int debug_registers_changed = 0;
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static int debug_registers_used = 0;
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/* The string sent by cygwin when it processes a signal.
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FIXME: This should be in a cygwin include file. */
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#define CYGWIN_SIGNAL_STRING "cygwin: signal"
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#define CHECK(x) check (x, __FILE__,__LINE__)
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#define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
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#define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
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#define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
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#define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
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/* Forward declaration */
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extern struct target_ops child_ops;
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static void child_stop (void);
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static int win32_child_thread_alive (ptid_t);
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void child_kill_inferior (void);
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static enum target_signal last_sig = TARGET_SIGNAL_0;
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/* Set if a signal was received from the debugged process */
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/* Thread information structure used to track information that is
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not available in gdb's thread structure. */
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typedef struct thread_info_struct
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{
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struct thread_info_struct *next;
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DWORD id;
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HANDLE h;
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char *name;
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int suspend_count;
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CONTEXT context;
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STACKFRAME sf;
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}
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thread_info;
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static thread_info thread_head;
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/* The process and thread handles for the above context. */
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static DEBUG_EVENT current_event; /* The current debug event from
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WaitForDebugEvent */
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static HANDLE current_process_handle; /* Currently executing process */
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static thread_info *current_thread; /* Info on currently selected thread */
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static DWORD main_thread_id; /* Thread ID of the main thread */
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static pid_t cygwin_pid; /* pid of cygwin process */
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/* Counts of things. */
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static int exception_count = 0;
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static int event_count = 0;
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static int saw_create;
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/* User options. */
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static int new_console = 0;
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static int new_group = 1;
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static int debug_exec = 0; /* show execution */
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static int debug_events = 0; /* show events from kernel */
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static int debug_memory = 0; /* show target memory accesses */
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static int debug_exceptions = 0; /* show target exceptions */
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static int useshell = 0; /* use shell for subprocesses */
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/* This vector maps GDB's idea of a register's number into an address
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in the win32 exception context vector.
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It also contains the bit mask needed to load the register in question.
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One day we could read a reg, we could inspect the context we
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already have loaded, if it doesn't have the bit set that we need,
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we read that set of registers in using GetThreadContext. If the
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context already contains what we need, we just unpack it. Then to
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write a register, first we have to ensure that the context contains
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the other regs of the group, and then we copy the info in and set
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out bit. */
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#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
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static const int mappings[] =
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{
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context_offset (Eax),
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context_offset (Ecx),
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context_offset (Edx),
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context_offset (Ebx),
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context_offset (Esp),
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context_offset (Ebp),
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context_offset (Esi),
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context_offset (Edi),
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context_offset (Eip),
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context_offset (EFlags),
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context_offset (SegCs),
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context_offset (SegSs),
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context_offset (SegDs),
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context_offset (SegEs),
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context_offset (SegFs),
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context_offset (SegGs),
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context_offset (FloatSave.RegisterArea[0 * 10]),
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context_offset (FloatSave.RegisterArea[1 * 10]),
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context_offset (FloatSave.RegisterArea[2 * 10]),
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context_offset (FloatSave.RegisterArea[3 * 10]),
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context_offset (FloatSave.RegisterArea[4 * 10]),
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context_offset (FloatSave.RegisterArea[5 * 10]),
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context_offset (FloatSave.RegisterArea[6 * 10]),
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context_offset (FloatSave.RegisterArea[7 * 10]),
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context_offset (FloatSave.ControlWord),
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context_offset (FloatSave.StatusWord),
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context_offset (FloatSave.TagWord),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorOffset),
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context_offset (FloatSave.DataSelector),
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context_offset (FloatSave.DataOffset),
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context_offset (FloatSave.ErrorSelector)
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#ifdef HAVE_SSE_REGS
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/* XMM0-7 */ ,
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context_offset (ExtendedRegisters[10*16]),
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context_offset (ExtendedRegisters[11*16]),
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context_offset (ExtendedRegisters[12*16]),
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context_offset (ExtendedRegisters[13*16]),
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context_offset (ExtendedRegisters[14*16]),
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context_offset (ExtendedRegisters[15*16]),
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context_offset (ExtendedRegisters[16*16]),
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context_offset (ExtendedRegisters[17*16]),
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/* MXCSR */
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context_offset (ExtendedRegisters[24])
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#endif
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};
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#undef context_offset
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/* This vector maps the target's idea of an exception (extracted
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from the DEBUG_EVENT structure) to GDB's idea. */
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struct xlate_exception
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{
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int them;
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enum target_signal us;
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};
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static const struct xlate_exception
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xlate[] =
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{
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{EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
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{STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
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{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
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{DBG_CONTROL_C, TARGET_SIGNAL_INT},
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{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
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{STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
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{-1, -1}};
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static void
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check (BOOL ok, const char *file, int line)
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{
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if (!ok)
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printf_filtered ("error return %s:%d was %lu\n", file, line,
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GetLastError ());
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}
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/* Find a thread record given a thread id.
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If get_context then also retrieve the context for this
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thread. */
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static thread_info *
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thread_rec (DWORD id, int get_context)
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{
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thread_info *th;
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for (th = &thread_head; (th = th->next) != NULL;)
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if (th->id == id)
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{
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if (!th->suspend_count && get_context)
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{
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if (get_context > 0 && id != current_event.dwThreadId)
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th->suspend_count = SuspendThread (th->h) + 1;
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else if (get_context < 0)
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th->suspend_count = -1;
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th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
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GetThreadContext (th->h, &th->context);
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if (id == current_event.dwThreadId)
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{
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/* Copy dr values from that thread. */
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dr[0] = th->context.Dr0;
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dr[1] = th->context.Dr1;
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dr[2] = th->context.Dr2;
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dr[3] = th->context.Dr3;
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dr[6] = th->context.Dr6;
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dr[7] = th->context.Dr7;
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}
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}
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return th;
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}
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return NULL;
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}
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/* Add a thread to the thread list */
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static thread_info *
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child_add_thread (DWORD id, HANDLE h)
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{
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thread_info *th;
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if ((th = thread_rec (id, FALSE)))
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return th;
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th = (thread_info *) xmalloc (sizeof (*th));
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memset (th, 0, sizeof (*th));
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th->id = id;
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th->h = h;
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th->next = thread_head.next;
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thread_head.next = th;
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add_thread (pid_to_ptid (id));
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/* Set the debug registers for the new thread in they are used. */
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if (debug_registers_used)
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{
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/* Only change the value of the debug registers. */
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th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
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CHECK (GetThreadContext (th->h, &th->context));
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th->context.Dr0 = dr[0];
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th->context.Dr1 = dr[1];
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th->context.Dr2 = dr[2];
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th->context.Dr3 = dr[3];
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/* th->context.Dr6 = dr[6];
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FIXME: should we set dr6 also ?? */
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th->context.Dr7 = dr[7];
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CHECK (SetThreadContext (th->h, &th->context));
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th->context.ContextFlags = 0;
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}
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return th;
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}
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/* Clear out any old thread list and reintialize it to a
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pristine state. */
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static void
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child_init_thread_list (void)
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{
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thread_info *th = &thread_head;
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DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
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init_thread_list ();
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while (th->next != NULL)
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{
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thread_info *here = th->next;
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th->next = here->next;
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(void) CloseHandle (here->h);
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xfree (here);
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}
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}
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/* Delete a thread from the list of threads */
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static void
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child_delete_thread (DWORD id)
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{
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thread_info *th;
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if (info_verbose)
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printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
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delete_thread (pid_to_ptid (id));
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for (th = &thread_head;
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th->next != NULL && th->next->id != id;
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th = th->next)
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continue;
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if (th->next != NULL)
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{
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thread_info *here = th->next;
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th->next = here->next;
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CloseHandle (here->h);
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xfree (here);
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}
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}
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static void
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do_child_fetch_inferior_registers (int r)
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{
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char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
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long l;
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if (r == FCS_REGNUM)
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{
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l = *((long *) context_offset) & 0xffff;
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supply_register (r, (char *) &l);
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}
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else if (r == FOP_REGNUM)
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{
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l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
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supply_register (r, (char *) &l);
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}
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else if (r >= 0)
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supply_register (r, context_offset);
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else
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{
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for (r = 0; r < NUM_REGS; r++)
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do_child_fetch_inferior_registers (r);
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}
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}
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static void
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child_fetch_inferior_registers (int r)
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{
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current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
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do_child_fetch_inferior_registers (r);
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}
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static void
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do_child_store_inferior_registers (int r)
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{
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if (r >= 0)
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deprecated_read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]);
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else
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{
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for (r = 0; r < NUM_REGS; r++)
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do_child_store_inferior_registers (r);
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}
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}
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|
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/* Store a new register value into the current thread context */
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static void
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child_store_inferior_registers (int r)
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{
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current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
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do_child_store_inferior_registers (r);
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}
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|
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static int psapi_loaded = 0;
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static HMODULE psapi_module_handle = NULL;
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static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
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|
static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
|
|
static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
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|
|
|
int
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psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
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{
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|
DWORD len;
|
|
MODULEINFO mi;
|
|
int i;
|
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HMODULE dh_buf[1];
|
|
HMODULE *DllHandle = dh_buf;
|
|
DWORD cbNeeded;
|
|
BOOL ok;
|
|
|
|
if (!psapi_loaded ||
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psapi_EnumProcessModules == NULL ||
|
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psapi_GetModuleInformation == NULL ||
|
|
psapi_GetModuleFileNameExA == NULL)
|
|
{
|
|
if (psapi_loaded)
|
|
goto failed;
|
|
psapi_loaded = 1;
|
|
psapi_module_handle = LoadLibrary ("psapi.dll");
|
|
if (!psapi_module_handle)
|
|
{
|
|
/* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
|
|
goto failed;
|
|
}
|
|
psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
|
|
psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
|
|
psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
|
|
"GetModuleFileNameExA");
|
|
if (psapi_EnumProcessModules == NULL ||
|
|
psapi_GetModuleInformation == NULL ||
|
|
psapi_GetModuleFileNameExA == NULL)
|
|
goto failed;
|
|
}
|
|
|
|
cbNeeded = 0;
|
|
ok = (*psapi_EnumProcessModules) (current_process_handle,
|
|
DllHandle,
|
|
sizeof (HMODULE),
|
|
&cbNeeded);
|
|
|
|
if (!ok || !cbNeeded)
|
|
goto failed;
|
|
|
|
DllHandle = (HMODULE *) alloca (cbNeeded);
|
|
if (!DllHandle)
|
|
goto failed;
|
|
|
|
ok = (*psapi_EnumProcessModules) (current_process_handle,
|
|
DllHandle,
|
|
cbNeeded,
|
|
&cbNeeded);
|
|
if (!ok)
|
|
goto failed;
|
|
|
|
for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
|
|
{
|
|
if (!(*psapi_GetModuleInformation) (current_process_handle,
|
|
DllHandle[i],
|
|
&mi,
|
|
sizeof (mi)))
|
|
error ("Can't get module info");
|
|
|
|
len = (*psapi_GetModuleFileNameExA) (current_process_handle,
|
|
DllHandle[i],
|
|
dll_name_ret,
|
|
MAX_PATH);
|
|
if (len == 0)
|
|
error ("Error getting dll name: %u\n", GetLastError ());
|
|
|
|
if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
|
|
return 1;
|
|
}
|
|
|
|
failed:
|
|
dll_name_ret[0] = '\0';
|
|
return 0;
|
|
}
|
|
|
|
/* Encapsulate the information required in a call to
|
|
symbol_file_add_args */
|
|
struct safe_symbol_file_add_args
|
|
{
|
|
char *name;
|
|
int from_tty;
|
|
struct section_addr_info *addrs;
|
|
int mainline;
|
|
int flags;
|
|
struct ui_file *err, *out;
|
|
struct objfile *ret;
|
|
};
|
|
|
|
/* Maintain a linked list of "so" information. */
|
|
struct so_stuff
|
|
{
|
|
struct so_stuff *next;
|
|
DWORD load_addr;
|
|
int loaded;
|
|
struct objfile *objfile;
|
|
char name[1];
|
|
} solib_start, *solib_end;
|
|
|
|
/* Call symbol_file_add with stderr redirected. We don't care if there
|
|
are errors. */
|
|
static int
|
|
safe_symbol_file_add_stub (void *argv)
|
|
{
|
|
#define p ((struct safe_symbol_file_add_args *)argv)
|
|
struct so_stuff *so = &solib_start;
|
|
|
|
while ((so = so->next))
|
|
if (so->loaded && strcasecmp (so->name, p->name) == 0)
|
|
return 0;
|
|
p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
|
|
return !!p->ret;
|
|
#undef p
|
|
}
|
|
|
|
/* Restore gdb's stderr after calling symbol_file_add */
|
|
static void
|
|
safe_symbol_file_add_cleanup (void *p)
|
|
{
|
|
#define sp ((struct safe_symbol_file_add_args *)p)
|
|
gdb_flush (gdb_stderr);
|
|
gdb_flush (gdb_stdout);
|
|
ui_file_delete (gdb_stderr);
|
|
ui_file_delete (gdb_stdout);
|
|
gdb_stderr = sp->err;
|
|
gdb_stdout = sp->out;
|
|
#undef sp
|
|
}
|
|
|
|
/* symbol_file_add wrapper that prevents errors from being displayed. */
|
|
static struct objfile *
|
|
safe_symbol_file_add (char *name, int from_tty,
|
|
struct section_addr_info *addrs,
|
|
int mainline, int flags)
|
|
{
|
|
struct safe_symbol_file_add_args p;
|
|
struct cleanup *cleanup;
|
|
|
|
cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
|
|
|
|
p.err = gdb_stderr;
|
|
p.out = gdb_stdout;
|
|
gdb_flush (gdb_stderr);
|
|
gdb_flush (gdb_stdout);
|
|
gdb_stderr = ui_file_new ();
|
|
gdb_stdout = ui_file_new ();
|
|
p.name = name;
|
|
p.from_tty = from_tty;
|
|
p.addrs = addrs;
|
|
p.mainline = mainline;
|
|
p.flags = flags;
|
|
catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
|
|
|
|
do_cleanups (cleanup);
|
|
return p.ret;
|
|
}
|
|
|
|
/* Remember the maximum DLL length for printing in info dll command. */
|
|
int max_dll_name_len;
|
|
|
|
static void
|
|
register_loaded_dll (const char *name, DWORD load_addr)
|
|
{
|
|
struct so_stuff *so;
|
|
char ppath[MAX_PATH + 1];
|
|
char buf[MAX_PATH + 1];
|
|
char cwd[MAX_PATH + 1];
|
|
char *p;
|
|
WIN32_FIND_DATA w32_fd;
|
|
HANDLE h = FindFirstFile(name, &w32_fd);
|
|
size_t len;
|
|
|
|
if (h == INVALID_HANDLE_VALUE)
|
|
strcpy (buf, name);
|
|
else
|
|
{
|
|
FindClose (h);
|
|
strcpy (buf, name);
|
|
if (GetCurrentDirectory (MAX_PATH + 1, cwd))
|
|
{
|
|
p = strrchr (buf, '\\');
|
|
if (p)
|
|
p[1] = '\0';
|
|
SetCurrentDirectory (buf);
|
|
GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
|
|
SetCurrentDirectory (cwd);
|
|
}
|
|
}
|
|
|
|
cygwin_conv_to_posix_path (buf, ppath);
|
|
so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1);
|
|
so->loaded = 0;
|
|
so->load_addr = load_addr;
|
|
so->next = NULL;
|
|
so->objfile = NULL;
|
|
strcpy (so->name, ppath);
|
|
|
|
solib_end->next = so;
|
|
solib_end = so;
|
|
len = strlen (ppath);
|
|
if (len > max_dll_name_len)
|
|
max_dll_name_len = len;
|
|
}
|
|
|
|
char *
|
|
get_image_name (HANDLE h, void *address, int unicode)
|
|
{
|
|
static char buf[(2 * MAX_PATH) + 1];
|
|
DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
|
|
char *address_ptr;
|
|
int len = 0;
|
|
char b[2];
|
|
DWORD done;
|
|
|
|
/* Attempt to read the name of the dll that was detected.
|
|
This is documented to work only when actively debugging
|
|
a program. It will not work for attached processes. */
|
|
if (address == NULL)
|
|
return NULL;
|
|
|
|
ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done);
|
|
|
|
/* See if we could read the address of a string, and that the
|
|
address isn't null. */
|
|
|
|
if (done != sizeof (address_ptr) || !address_ptr)
|
|
return NULL;
|
|
|
|
/* Find the length of the string */
|
|
do
|
|
{
|
|
ReadProcessMemory (h, address_ptr + len * size, &b, size, &done);
|
|
len++;
|
|
}
|
|
while ((b[0] != 0 || b[size - 1] != 0) && done == size);
|
|
|
|
if (!unicode)
|
|
ReadProcessMemory (h, address_ptr, buf, len, &done);
|
|
else
|
|
{
|
|
WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
|
|
ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
|
|
&done);
|
|
|
|
WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
/* Wait for child to do something. Return pid of child, or -1 in case
|
|
of error; store status through argument pointer OURSTATUS. */
|
|
static int
|
|
handle_load_dll (void *dummy)
|
|
{
|
|
LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
|
|
char dll_buf[MAX_PATH + 1];
|
|
char *dll_name = NULL;
|
|
char *p;
|
|
|
|
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
|
|
|
|
if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
|
|
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
|
|
|
|
dll_name = dll_buf;
|
|
|
|
if (*dll_name == '\0')
|
|
dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
|
|
if (!dll_name)
|
|
return 1;
|
|
|
|
register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
handle_unload_dll (void *dummy)
|
|
{
|
|
DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
|
|
struct so_stuff *so;
|
|
|
|
for (so = &solib_start; so->next != NULL; so = so->next)
|
|
if (so->next->load_addr == lpBaseOfDll)
|
|
{
|
|
struct so_stuff *sodel = so->next;
|
|
so->next = sodel->next;
|
|
if (!so->next)
|
|
solib_end = so;
|
|
if (sodel->objfile)
|
|
free_objfile (sodel->objfile);
|
|
xfree(sodel);
|
|
return 1;
|
|
}
|
|
error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Return name of last loaded DLL. */
|
|
char *
|
|
child_solib_loaded_library_pathname (int pid)
|
|
{
|
|
return !solib_end || !solib_end->name[0] ? NULL : solib_end->name;
|
|
}
|
|
|
|
/* Clear list of loaded DLLs. */
|
|
void
|
|
child_clear_solibs (void)
|
|
{
|
|
struct so_stuff *so, *so1 = solib_start.next;
|
|
|
|
while ((so = so1) != NULL)
|
|
{
|
|
so1 = so->next;
|
|
xfree (so);
|
|
}
|
|
|
|
solib_start.next = NULL;
|
|
solib_start.objfile = NULL;
|
|
solib_end = &solib_start;
|
|
max_dll_name_len = sizeof ("DLL Name") - 1;
|
|
}
|
|
|
|
/* Add DLL symbol information. */
|
|
static struct objfile *
|
|
solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
|
|
{
|
|
struct section_addr_info section_addrs;
|
|
|
|
/* The symbols in a dll are offset by 0x1000, which is the
|
|
the offset from 0 of the first byte in an image - because
|
|
of the file header and the section alignment. */
|
|
|
|
if (!name || !name[0])
|
|
return NULL;
|
|
|
|
memset (§ion_addrs, 0, sizeof (section_addrs));
|
|
section_addrs.other[0].name = ".text";
|
|
section_addrs.other[0].addr = load_addr;
|
|
return safe_symbol_file_add (name, from_tty, NULL, 0, OBJF_SHARED);
|
|
}
|
|
|
|
/* Load DLL symbol info. */
|
|
void
|
|
dll_symbol_command (char *args, int from_tty)
|
|
{
|
|
int n;
|
|
dont_repeat ();
|
|
|
|
if (args == NULL)
|
|
error ("dll-symbols requires a file name");
|
|
|
|
n = strlen (args);
|
|
if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
|
|
{
|
|
char *newargs = (char *) alloca (n + 4 + 1);
|
|
strcpy (newargs, args);
|
|
strcat (newargs, ".dll");
|
|
args = newargs;
|
|
}
|
|
|
|
safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
|
|
}
|
|
|
|
/* List currently loaded DLLs. */
|
|
void
|
|
info_dll_command (char *ignore, int from_tty)
|
|
{
|
|
struct so_stuff *so = &solib_start;
|
|
|
|
if (!so->next)
|
|
return;
|
|
|
|
printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
|
|
while ((so = so->next) != NULL)
|
|
printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Handle DEBUG_STRING output from child process.
|
|
Cygwin prepends its messages with a "cygwin:". Interpret this as
|
|
a Cygwin signal. Otherwise just print the string as a warning. */
|
|
static int
|
|
handle_output_debug_string (struct target_waitstatus *ourstatus)
|
|
{
|
|
char *s;
|
|
int gotasig = FALSE;
|
|
|
|
if (!target_read_string
|
|
((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
|
|
|| !s || !*s)
|
|
return gotasig;
|
|
|
|
if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0)
|
|
{
|
|
if (strncmp (s, "cYg", 3) != 0)
|
|
warning ("%s", s);
|
|
}
|
|
else
|
|
{
|
|
char *p;
|
|
int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0);
|
|
gotasig = target_signal_from_host (sig);
|
|
ourstatus->value.sig = gotasig;
|
|
if (gotasig)
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
}
|
|
|
|
xfree (s);
|
|
return gotasig;
|
|
}
|
|
|
|
static int
|
|
display_selector (HANDLE thread, DWORD sel)
|
|
{
|
|
LDT_ENTRY info;
|
|
if (GetThreadSelectorEntry (thread, sel, &info))
|
|
{
|
|
int base, limit;
|
|
printf_filtered ("0x%03lx: ", sel);
|
|
if (!info.HighWord.Bits.Pres)
|
|
{
|
|
puts_filtered ("Segment not present\n");
|
|
return 0;
|
|
}
|
|
base = (info.HighWord.Bits.BaseHi << 24) +
|
|
(info.HighWord.Bits.BaseMid << 16)
|
|
+ info.BaseLow;
|
|
limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
|
|
if (info.HighWord.Bits.Granularity)
|
|
limit = (limit << 12) | 0xfff;
|
|
printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
|
|
if (info.HighWord.Bits.Default_Big)
|
|
puts_filtered(" 32-bit ");
|
|
else
|
|
puts_filtered(" 16-bit ");
|
|
switch ((info.HighWord.Bits.Type & 0xf) >> 1)
|
|
{
|
|
case 0:
|
|
puts_filtered ("Data (Read-Only, Exp-up");
|
|
break;
|
|
case 1:
|
|
puts_filtered ("Data (Read/Write, Exp-up");
|
|
break;
|
|
case 2:
|
|
puts_filtered ("Unused segment (");
|
|
break;
|
|
case 3:
|
|
puts_filtered ("Data (Read/Write, Exp-down");
|
|
break;
|
|
case 4:
|
|
puts_filtered ("Code (Exec-Only, N.Conf");
|
|
break;
|
|
case 5:
|
|
puts_filtered ("Code (Exec/Read, N.Conf");
|
|
break;
|
|
case 6:
|
|
puts_filtered ("Code (Exec-Only, Conf");
|
|
break;
|
|
case 7:
|
|
puts_filtered ("Code (Exec/Read, Conf");
|
|
break;
|
|
default:
|
|
printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
|
|
}
|
|
if ((info.HighWord.Bits.Type & 0x1) == 0)
|
|
puts_filtered(", N.Acc");
|
|
puts_filtered (")\n");
|
|
if ((info.HighWord.Bits.Type & 0x10) == 0)
|
|
puts_filtered("System selector ");
|
|
printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
|
|
if (info.HighWord.Bits.Granularity)
|
|
puts_filtered ("Page granular.\n");
|
|
else
|
|
puts_filtered ("Byte granular.\n");
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
printf_filtered ("Invalid selector 0x%lx.\n",sel);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
display_selectors (char * args, int from_tty)
|
|
{
|
|
if (!current_thread)
|
|
{
|
|
puts_filtered ("Impossible to display selectors now.\n");
|
|
return;
|
|
}
|
|
if (!args)
|
|
{
|
|
|
|
puts_filtered ("Selector $cs\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegCs);
|
|
puts_filtered ("Selector $ds\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegDs);
|
|
puts_filtered ("Selector $es\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegEs);
|
|
puts_filtered ("Selector $ss\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegSs);
|
|
puts_filtered ("Selector $fs\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegFs);
|
|
puts_filtered ("Selector $gs\n");
|
|
display_selector (current_thread->h,
|
|
current_thread->context.SegGs);
|
|
}
|
|
else
|
|
{
|
|
int sel;
|
|
sel = parse_and_eval_long (args);
|
|
printf_filtered ("Selector \"%s\"\n",args);
|
|
display_selector (current_thread->h, sel);
|
|
}
|
|
}
|
|
|
|
static struct cmd_list_element *info_w32_cmdlist = NULL;
|
|
|
|
static void
|
|
info_w32_command (char *args, int from_tty)
|
|
{
|
|
help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
|
|
}
|
|
|
|
|
|
#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
|
|
printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
|
|
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
|
|
|
|
static int
|
|
handle_exception (struct target_waitstatus *ourstatus)
|
|
{
|
|
thread_info *th;
|
|
DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
|
|
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
|
|
/* Record the context of the current thread */
|
|
th = thread_rec (current_event.dwThreadId, -1);
|
|
|
|
switch (code)
|
|
{
|
|
case EXCEPTION_ACCESS_VIOLATION:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
|
|
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
|
|
break;
|
|
case STATUS_STACK_OVERFLOW:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
|
|
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
|
|
break;
|
|
case STATUS_FLOAT_DENORMAL_OPERAND:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_INEXACT_RESULT:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_INVALID_OPERATION:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_OVERFLOW:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_STACK_CHECK:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_UNDERFLOW:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_FLOAT_DIVIDE_BY_ZERO:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_INTEGER_DIVIDE_BY_ZERO:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case STATUS_INTEGER_OVERFLOW:
|
|
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
|
|
ourstatus->value.sig = TARGET_SIGNAL_FPE;
|
|
break;
|
|
case EXCEPTION_BREAKPOINT:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
|
|
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
|
|
break;
|
|
case DBG_CONTROL_C:
|
|
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
|
|
ourstatus->value.sig = TARGET_SIGNAL_INT;
|
|
break;
|
|
case DBG_CONTROL_BREAK:
|
|
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
|
|
ourstatus->value.sig = TARGET_SIGNAL_INT;
|
|
break;
|
|
case EXCEPTION_SINGLE_STEP:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
|
|
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
|
|
break;
|
|
case EXCEPTION_ILLEGAL_INSTRUCTION:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
|
|
ourstatus->value.sig = TARGET_SIGNAL_ILL;
|
|
break;
|
|
case EXCEPTION_PRIV_INSTRUCTION:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
|
|
ourstatus->value.sig = TARGET_SIGNAL_ILL;
|
|
break;
|
|
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
|
|
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
|
|
ourstatus->value.sig = TARGET_SIGNAL_ILL;
|
|
break;
|
|
default:
|
|
if (current_event.u.Exception.dwFirstChance)
|
|
return 0;
|
|
printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
|
|
current_event.u.Exception.ExceptionRecord.ExceptionCode,
|
|
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
|
|
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
|
|
break;
|
|
}
|
|
exception_count++;
|
|
last_sig = ourstatus->value.sig;
|
|
return 1;
|
|
}
|
|
|
|
/* Resume all artificially suspended threads if we are continuing
|
|
execution */
|
|
static BOOL
|
|
child_continue (DWORD continue_status, int id)
|
|
{
|
|
int i;
|
|
thread_info *th;
|
|
BOOL res;
|
|
|
|
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
|
|
current_event.dwProcessId, current_event.dwThreadId,
|
|
continue_status == DBG_CONTINUE ?
|
|
"DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
|
|
res = ContinueDebugEvent (current_event.dwProcessId,
|
|
current_event.dwThreadId,
|
|
continue_status);
|
|
continue_status = 0;
|
|
if (res)
|
|
for (th = &thread_head; (th = th->next) != NULL;)
|
|
if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
|
|
{
|
|
|
|
for (i = 0; i < th->suspend_count; i++)
|
|
(void) ResumeThread (th->h);
|
|
th->suspend_count = 0;
|
|
if (debug_registers_changed)
|
|
{
|
|
/* Only change the value of the debug reisters */
|
|
th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
|
|
th->context.Dr0 = dr[0];
|
|
th->context.Dr1 = dr[1];
|
|
th->context.Dr2 = dr[2];
|
|
th->context.Dr3 = dr[3];
|
|
/* th->context.Dr6 = dr[6];
|
|
FIXME: should we set dr6 also ?? */
|
|
th->context.Dr7 = dr[7];
|
|
CHECK (SetThreadContext (th->h, &th->context));
|
|
th->context.ContextFlags = 0;
|
|
}
|
|
}
|
|
|
|
debug_registers_changed = 0;
|
|
return res;
|
|
}
|
|
|
|
/* Get the next event from the child. Return 1 if the event requires
|
|
handling by WFI (or whatever).
|
|
*/
|
|
static int
|
|
get_child_debug_event (int pid, struct target_waitstatus *ourstatus)
|
|
{
|
|
BOOL debug_event;
|
|
DWORD continue_status, event_code;
|
|
thread_info *th = NULL;
|
|
static thread_info dummy_thread_info;
|
|
int retval = 0;
|
|
|
|
last_sig = TARGET_SIGNAL_0;
|
|
|
|
if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
|
|
goto out;
|
|
|
|
event_count++;
|
|
continue_status = DBG_CONTINUE;
|
|
|
|
event_code = current_event.dwDebugEventCode;
|
|
ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
|
|
|
|
switch (event_code)
|
|
{
|
|
case CREATE_THREAD_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"CREATE_THREAD_DEBUG_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
/* Record the existence of this thread */
|
|
th = child_add_thread (current_event.dwThreadId,
|
|
current_event.u.CreateThread.hThread);
|
|
if (info_verbose)
|
|
printf_unfiltered ("[New %s]\n",
|
|
target_pid_to_str (
|
|
pid_to_ptid (current_event.dwThreadId)));
|
|
retval = current_event.dwThreadId;
|
|
break;
|
|
|
|
case EXIT_THREAD_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"EXIT_THREAD_DEBUG_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
child_delete_thread (current_event.dwThreadId);
|
|
th = &dummy_thread_info;
|
|
break;
|
|
|
|
case CREATE_PROCESS_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"CREATE_PROCESS_DEBUG_EVENT"));
|
|
CloseHandle (current_event.u.CreateProcessInfo.hFile);
|
|
if (++saw_create != 1)
|
|
{
|
|
CloseHandle (current_event.u.CreateProcessInfo.hProcess);
|
|
break;
|
|
}
|
|
|
|
current_process_handle = current_event.u.CreateProcessInfo.hProcess;
|
|
main_thread_id = current_event.dwThreadId;
|
|
/* Add the main thread */
|
|
#if 0
|
|
th = child_add_thread (current_event.dwProcessId,
|
|
current_event.u.CreateProcessInfo.hProcess);
|
|
#endif
|
|
th = child_add_thread (main_thread_id,
|
|
current_event.u.CreateProcessInfo.hThread);
|
|
retval = ourstatus->value.related_pid = current_event.dwThreadId;
|
|
break;
|
|
|
|
case EXIT_PROCESS_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"EXIT_PROCESS_DEBUG_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
ourstatus->kind = TARGET_WAITKIND_EXITED;
|
|
ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
|
|
CloseHandle (current_process_handle);
|
|
retval = main_thread_id;
|
|
break;
|
|
|
|
case LOAD_DLL_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"LOAD_DLL_DEBUG_EVENT"));
|
|
CloseHandle (current_event.u.LoadDll.hFile);
|
|
if (saw_create != 1)
|
|
break;
|
|
catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
|
|
registers_changed (); /* mark all regs invalid */
|
|
ourstatus->kind = TARGET_WAITKIND_LOADED;
|
|
ourstatus->value.integer = 0;
|
|
retval = main_thread_id;
|
|
break;
|
|
|
|
case UNLOAD_DLL_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"UNLOAD_DLL_DEBUG_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
|
|
registers_changed (); /* mark all regs invalid */
|
|
/* ourstatus->kind = TARGET_WAITKIND_UNLOADED;
|
|
does not exist yet. */
|
|
break;
|
|
|
|
case EXCEPTION_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"EXCEPTION_DEBUG_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
if (handle_exception (ourstatus))
|
|
retval = current_event.dwThreadId;
|
|
break;
|
|
|
|
case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
(unsigned) current_event.dwProcessId,
|
|
(unsigned) current_event.dwThreadId,
|
|
"OUTPUT_DEBUG_STRING_EVENT"));
|
|
if (saw_create != 1)
|
|
break;
|
|
if (handle_output_debug_string (ourstatus))
|
|
retval = main_thread_id;
|
|
break;
|
|
|
|
default:
|
|
if (saw_create != 1)
|
|
break;
|
|
printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
|
|
(DWORD) current_event.dwProcessId,
|
|
(DWORD) current_event.dwThreadId);
|
|
printf_unfiltered (" unknown event code %ld\n",
|
|
current_event.dwDebugEventCode);
|
|
break;
|
|
}
|
|
|
|
if (!retval || saw_create != 1)
|
|
CHECK (child_continue (continue_status, -1));
|
|
else
|
|
{
|
|
current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE);
|
|
inferior_ptid = pid_to_ptid (retval);
|
|
}
|
|
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
/* Wait for interesting events to occur in the target process. */
|
|
static ptid_t
|
|
child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
|
|
{
|
|
int pid = PIDGET (ptid);
|
|
|
|
/* We loop when we get a non-standard exception rather than return
|
|
with a SPURIOUS because resume can try and step or modify things,
|
|
which needs a current_thread->h. But some of these exceptions mark
|
|
the birth or death of threads, which mean that the current thread
|
|
isn't necessarily what you think it is. */
|
|
|
|
while (1)
|
|
{
|
|
int retval = get_child_debug_event (pid, ourstatus);
|
|
if (retval)
|
|
return pid_to_ptid (retval);
|
|
else
|
|
{
|
|
int detach = 0;
|
|
|
|
if (ui_loop_hook != NULL)
|
|
detach = ui_loop_hook (0);
|
|
|
|
if (detach)
|
|
child_kill_inferior ();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_initial_child_stuff (DWORD pid)
|
|
{
|
|
extern int stop_after_trap;
|
|
int i;
|
|
|
|
last_sig = TARGET_SIGNAL_0;
|
|
event_count = 0;
|
|
exception_count = 0;
|
|
debug_registers_changed = 0;
|
|
debug_registers_used = 0;
|
|
for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
|
|
dr[i] = 0;
|
|
current_event.dwProcessId = pid;
|
|
memset (¤t_event, 0, sizeof (current_event));
|
|
push_target (&child_ops);
|
|
child_init_thread_list ();
|
|
child_clear_solibs ();
|
|
clear_proceed_status ();
|
|
init_wait_for_inferior ();
|
|
|
|
target_terminal_init ();
|
|
target_terminal_inferior ();
|
|
|
|
while (1)
|
|
{
|
|
stop_after_trap = 1;
|
|
wait_for_inferior ();
|
|
if (stop_signal != TARGET_SIGNAL_TRAP)
|
|
resume (0, stop_signal);
|
|
else
|
|
break;
|
|
}
|
|
stop_after_trap = 0;
|
|
return;
|
|
}
|
|
|
|
/* Since Windows XP, detaching from a process is supported by Windows.
|
|
The following code tries loading the appropriate functions dynamically.
|
|
If loading these functions succeeds use them to actually detach from
|
|
the inferior process, otherwise behave as usual, pretending that
|
|
detach has worked. */
|
|
static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
|
|
static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
|
|
|
|
static int
|
|
has_detach_ability (void)
|
|
{
|
|
static HMODULE kernel32 = NULL;
|
|
|
|
if (!kernel32)
|
|
kernel32 = LoadLibrary ("kernel32.dll");
|
|
if (kernel32)
|
|
{
|
|
if (!DebugSetProcessKillOnExit)
|
|
DebugSetProcessKillOnExit = GetProcAddress (kernel32,
|
|
"DebugSetProcessKillOnExit");
|
|
if (!DebugActiveProcessStop)
|
|
DebugActiveProcessStop = GetProcAddress (kernel32,
|
|
"DebugActiveProcessStop");
|
|
if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Attach to process PID, then initialize for debugging it. */
|
|
static void
|
|
child_attach (char *args, int from_tty)
|
|
{
|
|
BOOL ok;
|
|
DWORD pid;
|
|
|
|
if (!args)
|
|
error_no_arg ("process-id to attach");
|
|
|
|
pid = strtoul (args, 0, 0);
|
|
ok = DebugActiveProcess (pid);
|
|
|
|
if (!ok)
|
|
error ("Can't attach to process.");
|
|
|
|
if (has_detach_ability ())
|
|
{
|
|
attach_flag = 1;
|
|
DebugSetProcessKillOnExit (FALSE);
|
|
}
|
|
|
|
if (from_tty)
|
|
{
|
|
char *exec_file = (char *) get_exec_file (0);
|
|
|
|
if (exec_file)
|
|
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
|
|
target_pid_to_str (pid_to_ptid (pid)));
|
|
else
|
|
printf_unfiltered ("Attaching to %s\n",
|
|
target_pid_to_str (pid_to_ptid (pid)));
|
|
|
|
gdb_flush (gdb_stdout);
|
|
}
|
|
|
|
do_initial_child_stuff (pid);
|
|
target_terminal_ours ();
|
|
}
|
|
|
|
static void
|
|
child_detach (char *args, int from_tty)
|
|
{
|
|
int detached = 1;
|
|
|
|
if (has_detach_ability ())
|
|
{
|
|
delete_command (NULL, 0);
|
|
child_continue (DBG_CONTINUE, -1);
|
|
if (!DebugActiveProcessStop (current_event.dwProcessId))
|
|
{
|
|
error ("Can't detach process %lu (error %lu)",
|
|
current_event.dwProcessId, GetLastError ());
|
|
detached = 0;
|
|
}
|
|
DebugSetProcessKillOnExit (FALSE);
|
|
}
|
|
if (detached && from_tty)
|
|
{
|
|
char *exec_file = get_exec_file (0);
|
|
if (exec_file == 0)
|
|
exec_file = "";
|
|
printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
|
|
current_event.dwProcessId);
|
|
gdb_flush (gdb_stdout);
|
|
}
|
|
inferior_ptid = null_ptid;
|
|
unpush_target (&child_ops);
|
|
}
|
|
|
|
/* Print status information about what we're accessing. */
|
|
|
|
static void
|
|
child_files_info (struct target_ops *ignore)
|
|
{
|
|
printf_unfiltered ("\tUsing the running image of %s %s.\n",
|
|
attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
child_open (char *arg, int from_tty)
|
|
{
|
|
error ("Use the \"run\" command to start a Unix child process.");
|
|
}
|
|
|
|
/* Start an inferior win32 child process and sets inferior_ptid to its pid.
|
|
EXEC_FILE is the file to run.
|
|
ALLARGS is a string containing the arguments to the program.
|
|
ENV is the environment vector to pass. Errors reported with error(). */
|
|
|
|
static void
|
|
child_create_inferior (char *exec_file, char *allargs, char **env)
|
|
{
|
|
char *winenv;
|
|
char *temp;
|
|
int envlen;
|
|
int i;
|
|
STARTUPINFO si;
|
|
PROCESS_INFORMATION pi;
|
|
BOOL ret;
|
|
DWORD flags;
|
|
char *args;
|
|
char real_path[MAXPATHLEN];
|
|
char *toexec;
|
|
char shell[MAX_PATH + 1]; /* Path to shell */
|
|
const char *sh;
|
|
int tty;
|
|
int ostdin, ostdout, ostderr;
|
|
|
|
if (!exec_file)
|
|
error ("No executable specified, use `target exec'.\n");
|
|
|
|
memset (&si, 0, sizeof (si));
|
|
si.cb = sizeof (si);
|
|
|
|
if (!useshell)
|
|
{
|
|
flags = DEBUG_ONLY_THIS_PROCESS;
|
|
cygwin_conv_to_win32_path (exec_file, real_path);
|
|
toexec = real_path;
|
|
}
|
|
else
|
|
{
|
|
char *newallargs;
|
|
sh = getenv ("SHELL");
|
|
if (!sh)
|
|
sh = "/bin/sh";
|
|
cygwin_conv_to_win32_path (sh, shell);
|
|
newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
|
|
+ strlen (allargs) + 2);
|
|
sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
|
|
allargs = newallargs;
|
|
toexec = shell;
|
|
flags = DEBUG_PROCESS;
|
|
}
|
|
|
|
if (new_group)
|
|
flags |= CREATE_NEW_PROCESS_GROUP;
|
|
|
|
if (new_console)
|
|
flags |= CREATE_NEW_CONSOLE;
|
|
|
|
args = alloca (strlen (toexec) + strlen (allargs) + 2);
|
|
strcpy (args, toexec);
|
|
strcat (args, " ");
|
|
strcat (args, allargs);
|
|
|
|
/* Prepare the environment vars for CreateProcess. */
|
|
{
|
|
/* This code used to assume all env vars were file names and would
|
|
translate them all to win32 style. That obviously doesn't work in the
|
|
general case. The current rule is that we only translate PATH.
|
|
We need to handle PATH because we're about to call CreateProcess and
|
|
it uses PATH to find DLL's. Fortunately PATH has a well-defined value
|
|
in both posix and win32 environments. cygwin.dll will change it back
|
|
to posix style if necessary. */
|
|
|
|
static const char *conv_path_names[] =
|
|
{
|
|
"PATH=",
|
|
0
|
|
};
|
|
|
|
/* CreateProcess takes the environment list as a null terminated set of
|
|
strings (i.e. two nulls terminate the list). */
|
|
|
|
/* Get total size for env strings. */
|
|
for (envlen = 0, i = 0; env[i] && *env[i]; i++)
|
|
{
|
|
int j, len;
|
|
|
|
for (j = 0; conv_path_names[j]; j++)
|
|
{
|
|
len = strlen (conv_path_names[j]);
|
|
if (strncmp (conv_path_names[j], env[i], len) == 0)
|
|
{
|
|
if (cygwin_posix_path_list_p (env[i] + len))
|
|
envlen += len
|
|
+ cygwin_posix_to_win32_path_list_buf_size (env[i] + len);
|
|
else
|
|
envlen += strlen (env[i]) + 1;
|
|
break;
|
|
}
|
|
}
|
|
if (conv_path_names[j] == NULL)
|
|
envlen += strlen (env[i]) + 1;
|
|
}
|
|
|
|
winenv = alloca (envlen + 1);
|
|
|
|
/* Copy env strings into new buffer. */
|
|
for (temp = winenv, i = 0; env[i] && *env[i]; i++)
|
|
{
|
|
int j, len;
|
|
|
|
for (j = 0; conv_path_names[j]; j++)
|
|
{
|
|
len = strlen (conv_path_names[j]);
|
|
if (strncmp (conv_path_names[j], env[i], len) == 0)
|
|
{
|
|
if (cygwin_posix_path_list_p (env[i] + len))
|
|
{
|
|
memcpy (temp, env[i], len);
|
|
cygwin_posix_to_win32_path_list (env[i] + len, temp + len);
|
|
}
|
|
else
|
|
strcpy (temp, env[i]);
|
|
break;
|
|
}
|
|
}
|
|
if (conv_path_names[j] == NULL)
|
|
strcpy (temp, env[i]);
|
|
|
|
temp += strlen (temp) + 1;
|
|
}
|
|
|
|
/* Final nil string to terminate new env. */
|
|
*temp = 0;
|
|
}
|
|
|
|
if (!inferior_io_terminal)
|
|
tty = ostdin = ostdout = ostderr = -1;
|
|
else
|
|
{
|
|
tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
|
|
if (tty < 0)
|
|
{
|
|
print_sys_errmsg (inferior_io_terminal, errno);
|
|
ostdin = ostdout = ostderr = -1;
|
|
}
|
|
else
|
|
{
|
|
ostdin = dup (0);
|
|
ostdout = dup (1);
|
|
ostderr = dup (2);
|
|
dup2 (tty, 0);
|
|
dup2 (tty, 1);
|
|
dup2 (tty, 2);
|
|
}
|
|
}
|
|
|
|
ret = CreateProcess (0,
|
|
args, /* command line */
|
|
NULL, /* Security */
|
|
NULL, /* thread */
|
|
TRUE, /* inherit handles */
|
|
flags, /* start flags */
|
|
winenv,
|
|
NULL, /* current directory */
|
|
&si,
|
|
&pi);
|
|
if (tty >= 0)
|
|
{
|
|
close (tty);
|
|
dup2 (ostdin, 0);
|
|
dup2 (ostdout, 1);
|
|
dup2 (ostderr, 2);
|
|
close (ostdin);
|
|
close (ostdout);
|
|
close (ostderr);
|
|
}
|
|
|
|
if (!ret)
|
|
error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ());
|
|
|
|
CloseHandle (pi.hThread);
|
|
CloseHandle (pi.hProcess);
|
|
|
|
if (useshell && shell[0] != '\0')
|
|
saw_create = -1;
|
|
else
|
|
saw_create = 0;
|
|
|
|
do_initial_child_stuff (pi.dwProcessId);
|
|
|
|
/* child_continue (DBG_CONTINUE, -1); */
|
|
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
|
|
}
|
|
|
|
static void
|
|
child_mourn_inferior (void)
|
|
{
|
|
(void) child_continue (DBG_CONTINUE, -1);
|
|
i386_cleanup_dregs();
|
|
unpush_target (&child_ops);
|
|
generic_mourn_inferior ();
|
|
}
|
|
|
|
/* Send a SIGINT to the process group. This acts just like the user typed a
|
|
^C on the controlling terminal. */
|
|
|
|
static void
|
|
child_stop (void)
|
|
{
|
|
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
|
|
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
|
|
registers_changed (); /* refresh register state */
|
|
}
|
|
|
|
int
|
|
child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
|
|
int write, struct mem_attrib *mem,
|
|
struct target_ops *target)
|
|
{
|
|
DWORD done;
|
|
if (write)
|
|
{
|
|
DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
|
|
len, (DWORD) memaddr));
|
|
WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
|
|
len, &done);
|
|
FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
|
|
len, (DWORD) memaddr));
|
|
ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len,
|
|
&done);
|
|
}
|
|
return done;
|
|
}
|
|
|
|
void
|
|
child_kill_inferior (void)
|
|
{
|
|
CHECK (TerminateProcess (current_process_handle, 0));
|
|
|
|
for (;;)
|
|
{
|
|
if (!child_continue (DBG_CONTINUE, -1))
|
|
break;
|
|
if (!WaitForDebugEvent (¤t_event, INFINITE))
|
|
break;
|
|
if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
|
|
break;
|
|
}
|
|
|
|
CHECK (CloseHandle (current_process_handle));
|
|
|
|
/* this may fail in an attached process so don't check. */
|
|
(void) CloseHandle (current_thread->h);
|
|
target_mourn_inferior (); /* or just child_mourn_inferior? */
|
|
}
|
|
|
|
void
|
|
child_resume (ptid_t ptid, int step, enum target_signal sig)
|
|
{
|
|
thread_info *th;
|
|
DWORD continue_status = DBG_CONTINUE;
|
|
|
|
int pid = PIDGET (ptid);
|
|
|
|
if (sig != TARGET_SIGNAL_0)
|
|
{
|
|
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
|
|
{
|
|
DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
|
|
}
|
|
else if (sig == last_sig)
|
|
continue_status = DBG_EXCEPTION_NOT_HANDLED;
|
|
else
|
|
#if 0
|
|
/* This code does not seem to work, because
|
|
the kernel does probably not consider changes in the ExceptionRecord
|
|
structure when passing the exception to the inferior.
|
|
Note that this seems possible in the exception handler itself. */
|
|
{
|
|
int i;
|
|
for (i = 0; xlate[i].them != -1; i++)
|
|
if (xlate[i].us == sig)
|
|
{
|
|
current_event.u.Exception.ExceptionRecord.ExceptionCode =
|
|
xlate[i].them;
|
|
continue_status = DBG_EXCEPTION_NOT_HANDLED;
|
|
break;
|
|
}
|
|
if (continue_status == DBG_CONTINUE)
|
|
{
|
|
DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
|
|
}
|
|
}
|
|
#endif
|
|
DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
|
|
last_sig));
|
|
}
|
|
|
|
last_sig = TARGET_SIGNAL_0;
|
|
|
|
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
|
|
pid, step, sig));
|
|
|
|
/* Get context for currently selected thread */
|
|
th = thread_rec (current_event.dwThreadId, FALSE);
|
|
if (th)
|
|
{
|
|
if (step)
|
|
{
|
|
/* Single step by setting t bit */
|
|
child_fetch_inferior_registers (PS_REGNUM);
|
|
th->context.EFlags |= FLAG_TRACE_BIT;
|
|
}
|
|
|
|
if (th->context.ContextFlags)
|
|
{
|
|
if (debug_registers_changed)
|
|
{
|
|
th->context.Dr0 = dr[0];
|
|
th->context.Dr1 = dr[1];
|
|
th->context.Dr2 = dr[2];
|
|
th->context.Dr3 = dr[3];
|
|
/* th->context.Dr6 = dr[6];
|
|
FIXME: should we set dr6 also ?? */
|
|
th->context.Dr7 = dr[7];
|
|
}
|
|
CHECK (SetThreadContext (th->h, &th->context));
|
|
th->context.ContextFlags = 0;
|
|
}
|
|
}
|
|
|
|
/* Allow continuing with the same signal that interrupted us.
|
|
Otherwise complain. */
|
|
|
|
child_continue (continue_status, pid);
|
|
}
|
|
|
|
static void
|
|
child_prepare_to_store (void)
|
|
{
|
|
/* Do nothing, since we can store individual regs */
|
|
}
|
|
|
|
static int
|
|
child_can_run (void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
child_close (int x)
|
|
{
|
|
DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n",
|
|
PIDGET (inferior_ptid)));
|
|
}
|
|
|
|
struct target_ops child_ops;
|
|
|
|
static void
|
|
init_child_ops (void)
|
|
{
|
|
child_ops.to_shortname = "child";
|
|
child_ops.to_longname = "Win32 child process";
|
|
child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
|
|
child_ops.to_open = child_open;
|
|
child_ops.to_close = child_close;
|
|
child_ops.to_attach = child_attach;
|
|
child_ops.to_detach = child_detach;
|
|
child_ops.to_resume = child_resume;
|
|
child_ops.to_wait = child_wait;
|
|
child_ops.to_fetch_registers = child_fetch_inferior_registers;
|
|
child_ops.to_store_registers = child_store_inferior_registers;
|
|
child_ops.to_prepare_to_store = child_prepare_to_store;
|
|
child_ops.to_xfer_memory = child_xfer_memory;
|
|
child_ops.to_files_info = child_files_info;
|
|
child_ops.to_insert_breakpoint = memory_insert_breakpoint;
|
|
child_ops.to_remove_breakpoint = memory_remove_breakpoint;
|
|
child_ops.to_terminal_init = terminal_init_inferior;
|
|
child_ops.to_terminal_inferior = terminal_inferior;
|
|
child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
|
|
child_ops.to_terminal_ours = terminal_ours;
|
|
child_ops.to_terminal_save_ours = terminal_save_ours;
|
|
child_ops.to_terminal_info = child_terminal_info;
|
|
child_ops.to_kill = child_kill_inferior;
|
|
child_ops.to_create_inferior = child_create_inferior;
|
|
child_ops.to_mourn_inferior = child_mourn_inferior;
|
|
child_ops.to_can_run = child_can_run;
|
|
child_ops.to_thread_alive = win32_child_thread_alive;
|
|
child_ops.to_pid_to_str = cygwin_pid_to_str;
|
|
child_ops.to_stop = child_stop;
|
|
child_ops.to_stratum = process_stratum;
|
|
child_ops.to_has_all_memory = 1;
|
|
child_ops.to_has_memory = 1;
|
|
child_ops.to_has_stack = 1;
|
|
child_ops.to_has_registers = 1;
|
|
child_ops.to_has_execution = 1;
|
|
child_ops.to_magic = OPS_MAGIC;
|
|
}
|
|
|
|
void
|
|
_initialize_win32_nat (void)
|
|
{
|
|
struct cmd_list_element *c;
|
|
|
|
init_child_ops ();
|
|
|
|
c = add_com ("dll-symbols", class_files, dll_symbol_command,
|
|
"Load dll library symbols from FILE.");
|
|
set_cmd_completer (c, filename_completer);
|
|
|
|
add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
|
|
|
|
add_show_from_set (add_set_cmd ("shell", class_support, var_boolean,
|
|
(char *) &useshell,
|
|
"Set use of shell to start subprocess.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean,
|
|
(char *) &new_console,
|
|
"Set creation of new console when creating child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean,
|
|
(char *) &new_group,
|
|
"Set creation of new group when creating child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean,
|
|
(char *) &debug_exec,
|
|
"Set whether to display execution in child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean,
|
|
(char *) &debug_events,
|
|
"Set whether to display kernel events in child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean,
|
|
(char *) &debug_memory,
|
|
"Set whether to display memory accesses in child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean,
|
|
(char *) &debug_exceptions,
|
|
"Set whether to display kernel exceptions in child process.",
|
|
&setlist),
|
|
&showlist);
|
|
|
|
add_info ("dll", info_dll_command, "Status of loaded DLLs.");
|
|
add_info_alias ("sharedlibrary", "dll", 1);
|
|
|
|
add_prefix_cmd ("w32", class_info, info_w32_command,
|
|
"Print information specific to Win32 debugging.",
|
|
&info_w32_cmdlist, "info w32 ", 0, &infolist);
|
|
|
|
add_cmd ("selector", class_info, display_selectors,
|
|
"Display selectors infos.",
|
|
&info_w32_cmdlist);
|
|
|
|
add_target (&child_ops);
|
|
}
|
|
|
|
/* Hardware watchpoint support, adapted from go32-nat.c code. */
|
|
|
|
/* Pass the address ADDR to the inferior in the I'th debug register.
|
|
Here we just store the address in dr array, the registers will be
|
|
actually set up when child_continue is called. */
|
|
void
|
|
cygwin_set_dr (int i, CORE_ADDR addr)
|
|
{
|
|
if (i < 0 || i > 3)
|
|
internal_error (__FILE__, __LINE__,
|
|
"Invalid register %d in cygwin_set_dr.\n", i);
|
|
dr[i] = (unsigned) addr;
|
|
debug_registers_changed = 1;
|
|
debug_registers_used = 1;
|
|
}
|
|
|
|
/* Pass the value VAL to the inferior in the DR7 debug control
|
|
register. Here we just store the address in D_REGS, the watchpoint
|
|
will be actually set up in child_wait. */
|
|
void
|
|
cygwin_set_dr7 (unsigned val)
|
|
{
|
|
dr[7] = val;
|
|
debug_registers_changed = 1;
|
|
debug_registers_used = 1;
|
|
}
|
|
|
|
/* Get the value of the DR6 debug status register from the inferior.
|
|
Here we just return the value stored in dr[6]
|
|
by the last call to thread_rec for current_event.dwThreadId id. */
|
|
unsigned
|
|
cygwin_get_dr6 (void)
|
|
{
|
|
return dr[6];
|
|
}
|
|
|
|
|
|
/* Determine if the thread referenced by "pid" is alive
|
|
by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
|
|
it means that the pid has died. Otherwise it is assumed to be alive. */
|
|
static int
|
|
win32_child_thread_alive (ptid_t ptid)
|
|
{
|
|
int pid = PIDGET (ptid);
|
|
|
|
return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
|
|
FALSE : TRUE;
|
|
}
|
|
|
|
/* Convert pid to printable format. */
|
|
char *
|
|
cygwin_pid_to_str (ptid_t ptid)
|
|
{
|
|
static char buf[80];
|
|
int pid = PIDGET (ptid);
|
|
|
|
if ((DWORD) pid == current_event.dwProcessId)
|
|
sprintf (buf, "process %d", pid);
|
|
else
|
|
sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
|
|
return buf;
|
|
}
|
|
|
|
static int
|
|
core_dll_symbols_add (char *dll_name, DWORD base_addr)
|
|
{
|
|
struct objfile *objfile;
|
|
char *objfile_basename;
|
|
const char *dll_basename;
|
|
|
|
if (!(dll_basename = strrchr (dll_name, '/')))
|
|
dll_basename = dll_name;
|
|
else
|
|
dll_basename++;
|
|
|
|
ALL_OBJFILES (objfile)
|
|
{
|
|
objfile_basename = strrchr (objfile->name, '/');
|
|
|
|
if (objfile_basename &&
|
|
strcmp (dll_basename, objfile_basename + 1) == 0)
|
|
{
|
|
printf_unfiltered ("%08lx:%s (symbols previously loaded)\n",
|
|
base_addr, dll_name);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
register_loaded_dll (dll_name, base_addr + 0x1000);
|
|
solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000);
|
|
|
|
out:
|
|
return 1;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
struct target_ops *target;
|
|
bfd_vma addr;
|
|
}
|
|
map_code_section_args;
|
|
|
|
static void
|
|
map_single_dll_code_section (bfd * abfd, asection * sect, void *obj)
|
|
{
|
|
int old;
|
|
int update_coreops;
|
|
struct section_table *new_target_sect_ptr;
|
|
|
|
map_code_section_args *args = (map_code_section_args *) obj;
|
|
struct target_ops *target = args->target;
|
|
if (sect->flags & SEC_CODE)
|
|
{
|
|
update_coreops = core_ops.to_sections == target->to_sections;
|
|
|
|
if (target->to_sections)
|
|
{
|
|
old = target->to_sections_end - target->to_sections;
|
|
target->to_sections = (struct section_table *)
|
|
xrealloc ((char *) target->to_sections,
|
|
(sizeof (struct section_table)) * (1 + old));
|
|
}
|
|
else
|
|
{
|
|
old = 0;
|
|
target->to_sections = (struct section_table *)
|
|
xmalloc ((sizeof (struct section_table)));
|
|
}
|
|
target->to_sections_end = target->to_sections + (1 + old);
|
|
|
|
/* Update the to_sections field in the core_ops structure
|
|
if needed. */
|
|
if (update_coreops)
|
|
{
|
|
core_ops.to_sections = target->to_sections;
|
|
core_ops.to_sections_end = target->to_sections_end;
|
|
}
|
|
new_target_sect_ptr = target->to_sections + old;
|
|
new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
|
|
new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
|
|
bfd_section_size (abfd, sect);;
|
|
new_target_sect_ptr->the_bfd_section = sect;
|
|
new_target_sect_ptr->bfd = abfd;
|
|
}
|
|
}
|
|
|
|
static int
|
|
dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
|
|
{
|
|
bfd *dll_bfd;
|
|
map_code_section_args map_args;
|
|
asection *lowest_sect;
|
|
char *name;
|
|
if (dll_name == NULL || target == NULL)
|
|
return 0;
|
|
name = xstrdup (dll_name);
|
|
dll_bfd = bfd_openr (name, "pei-i386");
|
|
if (dll_bfd == NULL)
|
|
return 0;
|
|
|
|
if (bfd_check_format (dll_bfd, bfd_object))
|
|
{
|
|
lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
|
|
if (lowest_sect == NULL)
|
|
return 0;
|
|
map_args.target = target;
|
|
map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
|
|
|
|
bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj)
|
|
{
|
|
struct target_ops *target = (struct target_ops *) obj;
|
|
|
|
DWORD base_addr;
|
|
|
|
int dll_name_size;
|
|
char *dll_name = NULL;
|
|
char *buf = NULL;
|
|
struct win32_pstatus *pstatus;
|
|
char *p;
|
|
|
|
if (strncmp (sect->name, ".module", 7))
|
|
return;
|
|
|
|
buf = (char *) xmalloc (sect->_raw_size + 1);
|
|
if (!buf)
|
|
{
|
|
printf_unfiltered ("memory allocation failed for %s\n", sect->name);
|
|
goto out;
|
|
}
|
|
if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size))
|
|
goto out;
|
|
|
|
pstatus = (struct win32_pstatus *) buf;
|
|
|
|
memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
|
|
dll_name_size = pstatus->data.module_info.module_name_size;
|
|
if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size)
|
|
goto out;
|
|
|
|
dll_name = (char *) xmalloc (dll_name_size + 1);
|
|
if (!dll_name)
|
|
{
|
|
printf_unfiltered ("memory allocation failed for %s\n", sect->name);
|
|
goto out;
|
|
}
|
|
strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size);
|
|
|
|
while ((p = strchr (dll_name, '\\')))
|
|
*p = '/';
|
|
|
|
if (!core_dll_symbols_add (dll_name, (DWORD) base_addr))
|
|
printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name);
|
|
|
|
if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target))
|
|
printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
|
|
|
|
out:
|
|
if (buf)
|
|
xfree (buf);
|
|
if (dll_name)
|
|
xfree (dll_name);
|
|
return;
|
|
}
|
|
|
|
void
|
|
child_solib_add (char *filename, int from_tty, struct target_ops *target,
|
|
int readsyms)
|
|
{
|
|
if (!readsyms)
|
|
return;
|
|
if (core_bfd)
|
|
{
|
|
child_clear_solibs ();
|
|
bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target);
|
|
}
|
|
else
|
|
{
|
|
if (solib_end && solib_end->name)
|
|
solib_end->objfile = solib_symbols_add (solib_end->name, from_tty,
|
|
solib_end->load_addr);
|
|
}
|
|
}
|
|
|
|
static void
|
|
fetch_elf_core_registers (char *core_reg_sect,
|
|
unsigned core_reg_size,
|
|
int which,
|
|
CORE_ADDR reg_addr)
|
|
{
|
|
int r;
|
|
if (core_reg_size < sizeof (CONTEXT))
|
|
{
|
|
error ("Core file register section too small (%u bytes).", core_reg_size);
|
|
return;
|
|
}
|
|
for (r = 0; r < NUM_REGS; r++)
|
|
supply_register (r, core_reg_sect + mappings[r]);
|
|
}
|
|
|
|
static struct core_fns win32_elf_core_fns =
|
|
{
|
|
bfd_target_elf_flavour,
|
|
default_check_format,
|
|
default_core_sniffer,
|
|
fetch_elf_core_registers,
|
|
NULL
|
|
};
|
|
|
|
void
|
|
_initialize_core_win32 (void)
|
|
{
|
|
add_core_fns (&win32_elf_core_fns);
|
|
}
|
|
|
|
void
|
|
_initialize_check_for_gdb_ini (void)
|
|
{
|
|
char *homedir;
|
|
if (inhibit_gdbinit)
|
|
return;
|
|
|
|
homedir = getenv ("HOME");
|
|
if (homedir)
|
|
{
|
|
char *p;
|
|
char *oldini = (char *) alloca (strlen (homedir) +
|
|
sizeof ("/gdb.ini"));
|
|
strcpy (oldini, homedir);
|
|
p = strchr (oldini, '\0');
|
|
if (p > oldini && p[-1] != '/')
|
|
*p++ = '/';
|
|
strcpy (p, "gdb.ini");
|
|
if (access (oldini, 0) == 0)
|
|
{
|
|
int len = strlen (oldini);
|
|
char *newini = alloca (len + 1);
|
|
sprintf (newini, "%.*s.gdbinit",
|
|
(int) (len - (sizeof ("gdb.ini") - 1)), oldini);
|
|
warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini);
|
|
}
|
|
}
|
|
}
|