/* Target-vector operations for controlling win32 child processes, for GDB.
- Copyright 1995, 1996 Free Software Foundation, Inc.
+ Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
/* by Steve Chamberlain, sac@cygnus.com */
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
+#include <stdlib.h>
+
+#ifdef _MSC_VER
+#include "windefs.h"
+#else /* other WIN32 compiler */
#include <windows.h>
+#endif
+
#include "buildsym.h"
#include "symfile.h"
#include "objfiles.h"
/* Forward declaration */
extern struct target_ops child_ops;
+static void child_stop PARAMS ((void));
+
/* The most recently read context. Inspect ContextFlags to see what
bits are valid. */
int mask;
};
-
static const struct regmappings mappings[] =
{
#ifdef __PPC__
{(char *) &context.Fpr30, CONTEXT_FLOATING_POINT},
{(char *) &context.Fpr31, CONTEXT_FLOATING_POINT},
-
{(char *) &context.Iar, CONTEXT_CONTROL},
{(char *) &context.Msr, CONTEXT_CONTROL},
{(char *) &context.Cr, CONTEXT_INTEGER},
#endif
};
-
/* This vector maps the target's idea of an exception (extracted
from the DEBUG_EVENT structure) to GDB's idea. */
enum target_signal us;
};
-
static const struct xlate_exception
xlate[] =
{
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
{-1, -1}};
-
static void
check (BOOL ok, const char *file, int line)
{
/* 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 (char *eventp)
{
&done);
}
-
- dos_path_to_unix_path (dll_name, unix_dll_name);
+ /* FIXME: Can we delete this call? */
+ cygwin32_conv_to_posix_path (dll_name, unix_dll_name);
/* FIXME!! It would be nice to define one symbol which pointed to the
front of the dll if we can't find any symbols. */
return 1;
}
}
-
context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
GetThreadContext (current_thread, &context);
}
-static void
+static int
handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus)
{
int i;
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
default:
+ /* This may be a structured exception handling exception. In
+ that case, we want to let the program try to handle it, and
+ only break if we see the exception a second time. */
+ if (event->u.Exception.dwFirstChance)
+ return 0;
+
printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n",
event->u.Exception.ExceptionRecord.ExceptionCode,
event->u.Exception.ExceptionRecord.ExceptionAddress);
context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
GetThreadContext (current_thread, &context);
exception_count++;
+ return 1;
}
static int
DEBUG_EVENT event;
BOOL t = WaitForDebugEvent (&event, INFINITE);
char *p;
+ DWORD continue_status;
event_count++;
current_thread_id = event.dwThreadId;
current_process_id = event.dwProcessId;
+ continue_status = DBG_CONTINUE;
+
switch (event.dwDebugEventCode)
{
case CREATE_THREAD_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
event.dwProcessId, event.dwThreadId,
"EXCEPTION_DEBUG_EVENT"));
- handle_exception (&event, ourstatus);
- return current_process_id;
+ 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",
current_process_id, current_thread_id));
CHECK (ContinueDebugEvent (current_process_id,
current_thread_id,
- DBG_CONTINUE));
+ continue_status));
}
}
-
/* Attach to process PID, then initialize for debugging it. */
static void
if (!ok)
error ("Can't attach to process.");
-
exception_count = 0;
event_count = 0;
push_target (&child_ops);
}
-
static void
child_detach (args, from_tty)
char *args;
unpush_target (&child_ops);
}
-
/* Print status information about what we're accessing. */
static void
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
- unix_path_to_dos_path (exec_file, real_path);
+ cygwin32_conv_to_win32_path (exec_file, real_path);
flags = DEBUG_ONLY_THIS_PROCESS;
{
/* 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 the user either works solely
- with win32 style path names or with posix style path names and that
- all env vars are already set up appropriately. At any rate it is
- wrong for us to willy-nilly change them.
-
- However, 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. If we're
- working with win32 style path names, we don't need to do anything at
- all. */
+ 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
};
- int posix_rules_p = sysconf (_SC_PATH_RULES) == _PATH_RULES_POSIX;
/* 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++)
{
- if (posix_rules_p)
- {
- int j, len;
+ int j, len;
- for (j = 0; conv_path_names[j]; j++)
+ for (j = 0; conv_path_names[j]; j++)
+ {
+ len = strlen (conv_path_names[j]);
+ if (strncmp (conv_path_names[j], env[i], len) == 0)
{
- len = strlen (conv_path_names[j]);
- if (strncmp (conv_path_names[j], env[i], len) == 0)
- {
- envlen += len
- + cygwin32_posix_to_win32_path_list_buf_size (env[i] + len);
- break;
- }
+ 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;
}
- else
+ if (conv_path_names[j] == NULL)
envlen += strlen (env[i]) + 1;
}
/* Copy env strings into new buffer. */
for (temp = winenv, i = 0; env[i] && *env[i]; i++)
{
- if (posix_rules_p)
- {
- int j, len;
+ int j, len;
- for (j = 0; conv_path_names[j]; j++)
+ for (j = 0; conv_path_names[j]; j++)
+ {
+ len = strlen (conv_path_names[j]);
+ if (strncmp (conv_path_names[j], env[i], len) == 0)
{
- 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);
- break;
}
+ else
+ strcpy (temp, env[i]);
+ break;
}
- if (conv_path_names[j] == NULL)
- strcpy (temp, env[i]);
}
- else
+ if (conv_path_names[j] == NULL)
strcpy (temp, env[i]);
+
temp += strlen (temp) + 1;
}
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. */
-void
+static void
child_stop ()
{
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
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? */
DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
}
-struct target_ops child_ops =
+struct target_ops child_ops ;
+
+static void init_child_ops(void)
{
- "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 */
-};
+ 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_info = child_terminal_info;
+ child_ops.to_kill = child_kill_inferior;
+ child_ops.to_load = 0;
+ child_ops.to_lookup_symbol = 0;
+ 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_notice_signals = 0;
+ child_ops.to_thread_alive = 0;
+ child_ops.to_stop = child_stop;
+ child_ops.to_stratum = process_stratum;
+ child_ops.DONT_USE = 0;
+ 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_sections = 0;
+ child_ops.to_sections_end = 0;
+ child_ops.to_magic = OPS_MAGIC;
+}
void
_initialize_inftarg ()
{
struct cmd_list_element *c;
+ init_child_ops() ;
add_show_from_set
(add_set_cmd ("new-console", class_support, var_boolean,