982 lines
28 KiB
C
982 lines
28 KiB
C
/* Target-vector operations for controlling win32 child processes, for GDB.
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Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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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, Boston, MA 02111-1307, USA.
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*/
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/* by Steve Chamberlain, sac@cygnus.com */
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/* We assume we're being built with and will be used for cygwin32. */
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#include "defs.h"
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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 "wait.h"
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#include "gdbcore.h"
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#include "command.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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#ifdef _MSC_VER
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#include "windefs.h"
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#else /* other WIN32 compiler */
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#include <windows.h>
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#endif
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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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#define CHECK(x) check (x, __FILE__,__LINE__)
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#define DEBUG_EXEC(x) if (debug_exec) printf x
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#define DEBUG_EVENTS(x) if (debug_events) printf x
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#define DEBUG_MEM(x) if (debug_memory) printf x
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#define DEBUG_EXCEPT(x) if (debug_exceptions) printf 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 PARAMS ((void));
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/* The most recently read context. Inspect ContextFlags to see what
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bits are valid. */
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static CONTEXT context;
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/* The process and thread handles for the above context. */
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static HANDLE current_process;
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static HANDLE current_thread;
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static int current_process_id;
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static int current_thread_id;
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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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/* User options. */
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static int new_console = 0;
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static int new_group = 0;
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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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/* 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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struct regmappings
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{
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char *incontext;
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int mask;
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};
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static const struct regmappings mappings[] =
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{
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#ifdef __PPC__
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{(char *) &context.Gpr0, CONTEXT_INTEGER},
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{(char *) &context.Gpr1, CONTEXT_INTEGER},
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{(char *) &context.Gpr2, CONTEXT_INTEGER},
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{(char *) &context.Gpr3, CONTEXT_INTEGER},
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{(char *) &context.Gpr4, CONTEXT_INTEGER},
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{(char *) &context.Gpr5, CONTEXT_INTEGER},
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{(char *) &context.Gpr6, CONTEXT_INTEGER},
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{(char *) &context.Gpr7, CONTEXT_INTEGER},
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{(char *) &context.Gpr8, CONTEXT_INTEGER},
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{(char *) &context.Gpr9, CONTEXT_INTEGER},
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{(char *) &context.Gpr10, CONTEXT_INTEGER},
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{(char *) &context.Gpr11, CONTEXT_INTEGER},
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{(char *) &context.Gpr12, CONTEXT_INTEGER},
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{(char *) &context.Gpr13, CONTEXT_INTEGER},
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{(char *) &context.Gpr14, CONTEXT_INTEGER},
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{(char *) &context.Gpr15, CONTEXT_INTEGER},
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{(char *) &context.Gpr16, CONTEXT_INTEGER},
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{(char *) &context.Gpr17, CONTEXT_INTEGER},
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{(char *) &context.Gpr18, CONTEXT_INTEGER},
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{(char *) &context.Gpr19, CONTEXT_INTEGER},
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{(char *) &context.Gpr20, CONTEXT_INTEGER},
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{(char *) &context.Gpr21, CONTEXT_INTEGER},
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{(char *) &context.Gpr22, CONTEXT_INTEGER},
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{(char *) &context.Gpr23, CONTEXT_INTEGER},
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{(char *) &context.Gpr24, CONTEXT_INTEGER},
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{(char *) &context.Gpr25, CONTEXT_INTEGER},
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{(char *) &context.Gpr26, CONTEXT_INTEGER},
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{(char *) &context.Gpr27, CONTEXT_INTEGER},
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{(char *) &context.Gpr28, CONTEXT_INTEGER},
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{(char *) &context.Gpr29, CONTEXT_INTEGER},
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{(char *) &context.Gpr30, CONTEXT_INTEGER},
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{(char *) &context.Gpr31, CONTEXT_INTEGER},
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{(char *) &context.Fpr0, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr1, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr2, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr3, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr4, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr5, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr6, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr7, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr8, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr9, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr10, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr11, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr12, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr13, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr14, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr15, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr16, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr17, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr18, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr19, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr20, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr21, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr22, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr23, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr24, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr25, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr26, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr27, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr28, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr29, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr30, CONTEXT_FLOATING_POINT},
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{(char *) &context.Fpr31, CONTEXT_FLOATING_POINT},
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{(char *) &context.Iar, CONTEXT_CONTROL},
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{(char *) &context.Msr, CONTEXT_CONTROL},
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{(char *) &context.Cr, CONTEXT_INTEGER},
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{(char *) &context.Lr, CONTEXT_CONTROL},
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{(char *) &context.Ctr, CONTEXT_CONTROL},
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{(char *) &context.Xer, CONTEXT_INTEGER},
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{0,0}, /* MQ, but there isn't one */
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#else
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{(char *) &context.Eax, CONTEXT_INTEGER},
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{(char *) &context.Ecx, CONTEXT_INTEGER},
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{(char *) &context.Edx, CONTEXT_INTEGER},
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{(char *) &context.Ebx, CONTEXT_INTEGER},
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{(char *) &context.Esp, CONTEXT_CONTROL},
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{(char *) &context.Ebp, CONTEXT_CONTROL},
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{(char *) &context.Esi, CONTEXT_INTEGER},
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{(char *) &context.Edi, CONTEXT_INTEGER},
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{(char *) &context.Eip, CONTEXT_CONTROL},
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{(char *) &context.EFlags, CONTEXT_CONTROL},
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{(char *) &context.SegCs, CONTEXT_SEGMENTS},
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{(char *) &context.SegSs, CONTEXT_SEGMENTS},
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{(char *) &context.SegDs, CONTEXT_SEGMENTS},
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{(char *) &context.SegEs, CONTEXT_SEGMENTS},
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{(char *) &context.SegFs, CONTEXT_SEGMENTS},
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{(char *) &context.SegGs, CONTEXT_SEGMENTS},
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{&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT},
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{&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT},
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#endif
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};
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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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{-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 %d\n", file, line, GetLastError ());
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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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if (r < 0)
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{
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for (r = 0; r < NUM_REGS; r++)
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child_fetch_inferior_registers (r);
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}
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else
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{
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supply_register (r, mappings[r].incontext);
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}
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}
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static void
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child_store_inferior_registers (int r)
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{
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if (r < 0)
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{
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for (r = 0; r < NUM_REGS; r++)
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child_store_inferior_registers (r);
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}
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else
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{
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read_register_gen (r, mappings[r].incontext);
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}
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}
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/* Wait for child to do something. Return pid of child, or -1 in case
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of error; store status through argument pointer OURSTATUS. */
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static int
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handle_load_dll (char *eventp)
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{
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DEBUG_EVENT * event = (DEBUG_EVENT *)eventp;
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DWORD dll_name_ptr;
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DWORD done;
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ReadProcessMemory (current_process,
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(DWORD) event->u.LoadDll.lpImageName,
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(char *) &dll_name_ptr,
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sizeof (dll_name_ptr), &done);
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/* See if we could read the address of a string, and that the
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address isn't null. */
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if (done == sizeof (dll_name_ptr) && dll_name_ptr)
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{
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char *dll_name, *dll_basename;
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struct objfile *objfile;
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char unix_dll_name[MAX_PATH];
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int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char);
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int len = 0;
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char b[2];
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do
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{
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ReadProcessMemory (current_process,
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dll_name_ptr + len * size,
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&b,
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size,
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&done);
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len++;
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}
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while ((b[0] != 0 || b[size - 1] != 0) && done == size);
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dll_name = alloca (len);
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if (event->u.LoadDll.fUnicode)
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{
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WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
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ReadProcessMemory (current_process,
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dll_name_ptr,
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unicode_dll_name,
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len * sizeof (WCHAR),
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&done);
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WideCharToMultiByte (CP_ACP, 0,
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unicode_dll_name, len,
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dll_name, len, 0, 0);
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}
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else
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{
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ReadProcessMemory (current_process,
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dll_name_ptr,
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dll_name,
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len,
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&done);
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}
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/* FIXME: Can we delete this call? */
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cygwin32_conv_to_posix_path (dll_name, unix_dll_name);
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/* FIXME!! It would be nice to define one symbol which pointed to the
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front of the dll if we can't find any symbols. */
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if (!(dll_basename = strrchr(dll_name, '\\')))
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dll_basename = strrchr(dll_name, '/');
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ALL_OBJFILES(objfile)
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{
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char *objfile_basename;
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if (!(objfile_basename = strrchr(objfile->name, '\\')))
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objfile_basename = strrchr(objfile->name, '/');
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if (dll_basename && objfile_basename &&
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strcmp(dll_basename+1, objfile_basename+1) == 0)
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{
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printf_unfiltered ("%s (symbols previously loaded)\n",
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dll_basename + 1);
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return 1;
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}
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}
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context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
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GetThreadContext (current_thread, &context);
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/* The symbols in a dll are offset by 0x1000, which is the
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the offset from 0 of the first byte in an image - because
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of the file header and the section alignment.
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FIXME: Is this the real reason that we need the 0x1000 ? */
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symbol_file_add (unix_dll_name, 0,
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(int) event->u.LoadDll.lpBaseOfDll + 0x1000, 0, 0, 0);
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printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll,
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unix_dll_name);
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}
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return 1;
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}
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static int
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handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus)
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{
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int i;
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int done = 0;
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ourstatus->kind = TARGET_WAITKIND_STOPPED;
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switch (event->u.Exception.ExceptionRecord.ExceptionCode)
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{
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case EXCEPTION_ACCESS_VIOLATION:
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DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionAddress));
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ourstatus->value.sig = TARGET_SIGNAL_SEGV;
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break;
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case STATUS_STACK_OVERFLOW:
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DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionAddress));
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ourstatus->value.sig = TARGET_SIGNAL_SEGV;
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break;
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case EXCEPTION_BREAKPOINT:
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DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionAddress));
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ourstatus->value.sig = TARGET_SIGNAL_TRAP;
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break;
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case DBG_CONTROL_C:
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DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionAddress));
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ourstatus->value.sig = TARGET_SIGNAL_INT;
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break;
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case EXCEPTION_SINGLE_STEP:
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DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionAddress));
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ourstatus->value.sig = TARGET_SIGNAL_TRAP;
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break;
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default:
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/* This may be a structured exception handling exception. In
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that case, we want to let the program try to handle it, and
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only break if we see the exception a second time. */
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if (event->u.Exception.dwFirstChance)
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return 0;
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printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n",
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event->u.Exception.ExceptionRecord.ExceptionCode,
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event->u.Exception.ExceptionRecord.ExceptionAddress);
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ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
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break;
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}
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context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
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GetThreadContext (current_thread, &context);
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exception_count++;
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return 1;
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}
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static int
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child_wait (int pid, struct target_waitstatus *ourstatus)
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|
{
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|
/* We loop when we get a non-standard exception rather than return
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|
with a SPURIOUS because resume can try and step or modify things,
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|
which needs a current_thread. But some of these exceptions mark
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the birth or death of threads, which mean that the current thread
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isn't necessarily what you think it is. */
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while (1)
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{
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DEBUG_EVENT event;
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BOOL t = WaitForDebugEvent (&event, INFINITE);
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char *p;
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DWORD continue_status;
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event_count++;
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current_thread_id = event.dwThreadId;
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current_process_id = event.dwProcessId;
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continue_status = DBG_CONTINUE;
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switch (event.dwDebugEventCode)
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{
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case CREATE_THREAD_DEBUG_EVENT:
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DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
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event.dwProcessId, event.dwThreadId,
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"CREATE_THREAD_DEBUG_EVENT"));
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break;
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case EXIT_THREAD_DEBUG_EVENT:
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DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
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event.dwProcessId, event.dwThreadId,
|
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"EXIT_THREAD_DEBUG_EVENT"));
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break;
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case CREATE_PROCESS_DEBUG_EVENT:
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DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
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event.dwProcessId, event.dwThreadId,
|
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"CREATE_PROCESS_DEBUG_EVENT"));
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break;
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|
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case EXIT_PROCESS_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
event.dwProcessId, event.dwThreadId,
|
|
"EXIT_PROCESS_DEBUG_EVENT"));
|
|
ourstatus->kind = TARGET_WAITKIND_EXITED;
|
|
ourstatus->value.integer = event.u.ExitProcess.dwExitCode;
|
|
CloseHandle (current_process);
|
|
CloseHandle (current_thread);
|
|
return current_process_id;
|
|
break;
|
|
|
|
case LOAD_DLL_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
event.dwProcessId, event.dwThreadId,
|
|
"LOAD_DLL_DEBUG_EVENT"));
|
|
catch_errors (handle_load_dll,
|
|
(char*) &event,
|
|
"\n[failed reading symbols from DLL]\n",
|
|
RETURN_MASK_ALL);
|
|
registers_changed(); /* mark all regs invalid */
|
|
break;
|
|
case UNLOAD_DLL_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
event.dwProcessId, event.dwThreadId,
|
|
"UNLOAD_DLL_DEBUG_EVENT"));
|
|
break; /* FIXME: don't know what to do here */
|
|
case EXCEPTION_DEBUG_EVENT:
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
event.dwProcessId, event.dwThreadId,
|
|
"EXCEPTION_DEBUG_EVENT"));
|
|
if (handle_exception (&event, ourstatus))
|
|
return current_process_id;
|
|
continue_status = DBG_EXCEPTION_NOT_HANDLED;
|
|
break;
|
|
|
|
case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
|
|
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
|
|
event.dwProcessId, event.dwThreadId,
|
|
"OUTPUT_DEBUG_STRING_EVENT"));
|
|
if (target_read_string
|
|
((CORE_ADDR) event.u.DebugString.lpDebugStringData,
|
|
&p, 1024, 0) && p && *p)
|
|
{
|
|
warning(p);
|
|
free(p);
|
|
}
|
|
break;
|
|
default:
|
|
printf_unfiltered ("gdb: kernel event for pid=%d tid=%d\n",
|
|
event.dwProcessId, event.dwThreadId);
|
|
printf_unfiltered (" unknown event code %d\n",
|
|
event.dwDebugEventCode);
|
|
break;
|
|
}
|
|
DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
|
|
current_process_id, current_thread_id));
|
|
CHECK (ContinueDebugEvent (current_process_id,
|
|
current_thread_id,
|
|
continue_status));
|
|
}
|
|
}
|
|
|
|
/* Attach to process PID, then initialize for debugging it. */
|
|
|
|
static void
|
|
child_attach (args, from_tty)
|
|
char *args;
|
|
int from_tty;
|
|
{
|
|
BOOL ok;
|
|
|
|
if (!args)
|
|
error_no_arg ("process-id to attach");
|
|
|
|
current_process_id = strtoul (args, 0, 0);
|
|
|
|
ok = DebugActiveProcess (current_process_id);
|
|
|
|
if (!ok)
|
|
error ("Can't attach to process.");
|
|
|
|
exception_count = 0;
|
|
event_count = 0;
|
|
|
|
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 (current_process_id));
|
|
else
|
|
printf_unfiltered ("Attaching to %s\n",
|
|
target_pid_to_str (current_process_id));
|
|
|
|
gdb_flush (gdb_stdout);
|
|
}
|
|
|
|
inferior_pid = current_process_id;
|
|
push_target (&child_ops);
|
|
}
|
|
|
|
static void
|
|
child_detach (args, from_tty)
|
|
char *args;
|
|
int from_tty;
|
|
{
|
|
if (from_tty)
|
|
{
|
|
char *exec_file = get_exec_file (0);
|
|
if (exec_file == 0)
|
|
exec_file = "";
|
|
printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
|
|
target_pid_to_str (inferior_pid));
|
|
gdb_flush (gdb_stdout);
|
|
}
|
|
inferior_pid = 0;
|
|
unpush_target (&child_ops);
|
|
}
|
|
|
|
/* Print status information about what we're accessing. */
|
|
|
|
static void
|
|
child_files_info (ignore)
|
|
struct target_ops *ignore;
|
|
{
|
|
printf_unfiltered ("\tUsing the running image of %s %s.\n",
|
|
attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
child_open (arg, from_tty)
|
|
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_pid 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 (exec_file, allargs, env)
|
|
char *exec_file;
|
|
char *allargs;
|
|
char **env;
|
|
{
|
|
char real_path[MAXPATHLEN];
|
|
char *winenv;
|
|
char *temp;
|
|
int envlen;
|
|
int i;
|
|
|
|
STARTUPINFO si;
|
|
PROCESS_INFORMATION pi;
|
|
struct target_waitstatus dummy;
|
|
BOOL ret;
|
|
DWORD flags;
|
|
char *args;
|
|
|
|
if (!exec_file)
|
|
{
|
|
error ("No executable specified, use `target exec'.\n");
|
|
}
|
|
|
|
memset (&si, 0, sizeof (si));
|
|
si.cb = sizeof (si);
|
|
|
|
cygwin32_conv_to_win32_path (exec_file, real_path);
|
|
|
|
flags = DEBUG_ONLY_THIS_PROCESS;
|
|
|
|
if (new_group)
|
|
flags |= CREATE_NEW_PROCESS_GROUP;
|
|
|
|
if (new_console)
|
|
flags |= CREATE_NEW_CONSOLE;
|
|
|
|
args = alloca (strlen (real_path) + strlen (allargs) + 2);
|
|
|
|
strcpy (args, real_path);
|
|
|
|
strcat (args, " ");
|
|
strcat (args, allargs);
|
|
|
|
/* Prepare the environment vars for CreateProcess. */
|
|
{
|
|
/* This code use 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 (cygwin32_posix_path_list_p (env[i] + len))
|
|
envlen += len
|
|
+ cygwin32_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 (cygwin32_posix_path_list_p (env[i] + len))
|
|
{
|
|
memcpy (temp, env[i], len);
|
|
cygwin32_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;
|
|
}
|
|
|
|
ret = CreateProcess (0,
|
|
args, /* command line */
|
|
NULL, /* Security */
|
|
NULL, /* thread */
|
|
TRUE, /* inherit handles */
|
|
flags, /* start flags */
|
|
winenv,
|
|
NULL, /* current directory */
|
|
&si,
|
|
&pi);
|
|
if (!ret)
|
|
error ("Error creating process %s, (error %d)\n", exec_file, GetLastError());
|
|
|
|
exception_count = 0;
|
|
event_count = 0;
|
|
|
|
inferior_pid = pi.dwProcessId;
|
|
current_process = pi.hProcess;
|
|
current_thread = pi.hThread;
|
|
current_process_id = pi.dwProcessId;
|
|
current_thread_id = pi.dwThreadId;
|
|
push_target (&child_ops);
|
|
init_thread_list ();
|
|
init_wait_for_inferior ();
|
|
clear_proceed_status ();
|
|
target_terminal_init ();
|
|
target_terminal_inferior ();
|
|
|
|
/* Ignore the first trap */
|
|
child_wait (inferior_pid, &dummy);
|
|
|
|
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
|
|
}
|
|
|
|
static void
|
|
child_mourn_inferior ()
|
|
{
|
|
(void) ContinueDebugEvent (current_process_id,
|
|
current_thread_id,
|
|
DBG_CONTINUE);
|
|
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 ()
|
|
{
|
|
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
|
|
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
|
|
registers_changed(); /* refresh register state */
|
|
}
|
|
|
|
int
|
|
child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
|
|
int write, struct target_ops *target)
|
|
{
|
|
DWORD done;
|
|
if (write)
|
|
{
|
|
DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08x\n",
|
|
len, memaddr));
|
|
WriteProcessMemory (current_process, memaddr, our, len, &done);
|
|
FlushInstructionCache (current_process, memaddr, len);
|
|
}
|
|
else
|
|
{
|
|
DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08x\n",
|
|
len, memaddr));
|
|
ReadProcessMemory (current_process, memaddr, our, len, &done);
|
|
}
|
|
return done;
|
|
}
|
|
|
|
void
|
|
child_kill_inferior (void)
|
|
{
|
|
CHECK (TerminateProcess (current_process, 0));
|
|
|
|
for (;;)
|
|
{
|
|
DEBUG_EVENT event;
|
|
if (!ContinueDebugEvent (current_process_id,
|
|
current_thread_id,
|
|
DBG_CONTINUE))
|
|
break;
|
|
if (!WaitForDebugEvent (&event, INFINITE))
|
|
break;
|
|
current_thread_id = event.dwThreadId;
|
|
current_process_id = event.dwProcessId;
|
|
if (event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
|
|
break;
|
|
}
|
|
|
|
CHECK (CloseHandle (current_process));
|
|
CHECK (CloseHandle (current_thread));
|
|
target_mourn_inferior(); /* or just child_mourn_inferior? */
|
|
}
|
|
|
|
void
|
|
child_resume (int pid, int step, enum target_signal signal)
|
|
{
|
|
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, signal=%d);\n",
|
|
pid, step, signal));
|
|
|
|
if (step)
|
|
{
|
|
#ifdef __PPC__
|
|
warning ("Single stepping not done.\n");
|
|
#endif
|
|
#ifdef i386
|
|
/* Single step by setting t bit */
|
|
child_fetch_inferior_registers (PS_REGNUM);
|
|
context.EFlags |= FLAG_TRACE_BIT;
|
|
#endif
|
|
}
|
|
|
|
if (context.ContextFlags)
|
|
{
|
|
CHECK (SetThreadContext (current_thread, &context));
|
|
context.ContextFlags = 0;
|
|
}
|
|
|
|
if (signal)
|
|
{
|
|
fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n");
|
|
}
|
|
|
|
DEBUG_EVENTS (("gdb: ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
|
|
current_process_id, current_thread_id));
|
|
CHECK (ContinueDebugEvent (current_process_id,
|
|
current_thread_id,
|
|
DBG_CONTINUE));
|
|
}
|
|
|
|
static void
|
|
child_prepare_to_store ()
|
|
{
|
|
/* Do nothing, since we can store individual regs */
|
|
}
|
|
|
|
static int
|
|
child_can_run ()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
child_close ()
|
|
{
|
|
DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
|
|
}
|
|
|
|
struct target_ops child_ops =
|
|
{
|
|
"child", /* to_shortname */
|
|
"Win32 child process", /* to_longname */
|
|
"Win32 child process (started by the \"run\" command).", /* to_doc */
|
|
child_open, /* to_open */
|
|
child_close, /* to_close */
|
|
child_attach, /* to_attach */
|
|
child_detach, /* to_detach */
|
|
child_resume, /* to_resume */
|
|
child_wait, /* to_wait */
|
|
child_fetch_inferior_registers,/* to_fetch_registers */
|
|
child_store_inferior_registers,/* to_store_registers */
|
|
child_prepare_to_store, /* to_child_prepare_to_store */
|
|
child_xfer_memory, /* to_xfer_memory */
|
|
child_files_info, /* to_files_info */
|
|
memory_insert_breakpoint, /* to_insert_breakpoint */
|
|
memory_remove_breakpoint, /* to_remove_breakpoint */
|
|
terminal_init_inferior, /* to_terminal_init */
|
|
terminal_inferior, /* to_terminal_inferior */
|
|
terminal_ours_for_output, /* to_terminal_ours_for_output */
|
|
terminal_ours, /* to_terminal_ours */
|
|
child_terminal_info, /* to_terminal_info */
|
|
child_kill_inferior, /* to_kill */
|
|
0, /* to_load */
|
|
0, /* to_lookup_symbol */
|
|
child_create_inferior, /* to_create_inferior */
|
|
child_mourn_inferior, /* to_mourn_inferior */
|
|
child_can_run, /* to_can_run */
|
|
0, /* to_notice_signals */
|
|
0, /* to_thread_alive */
|
|
child_stop, /* to_stop */
|
|
process_stratum, /* to_stratum */
|
|
0, /* to_next */
|
|
1, /* to_has_all_memory */
|
|
1, /* to_has_memory */
|
|
1, /* to_has_stack */
|
|
1, /* to_has_registers */
|
|
1, /* to_has_execution */
|
|
0, /* to_sections */
|
|
0, /* to_sections_end */
|
|
OPS_MAGIC /* to_magic */
|
|
};
|
|
|
|
void
|
|
_initialize_inftarg ()
|
|
{
|
|
struct cmd_list_element *c;
|
|
|
|
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_target (&child_ops);
|
|
}
|