/* 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 */
-/* We assume we're being built with and will be used for cygwin32. */
+/* We assume we're being built with and will be used for cygwin. */
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#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>
+#include <imagehlp.h>
+#endif
+
#include "buildsym.h"
#include "symfile.h"
#include "objfiles.h"
#include <sys/param.h>
#include <unistd.h>
+/* The ui's event loop. */
+extern int (*ui_loop_hook) PARAMS ((int signo));
+
+/* If we're not using the old Cygwin header file set, define the
+ following which never should have been in the generic Win32 API
+ headers in the first place since they were our own invention... */
+#ifndef _GNU_H_WINDOWS_H
+#define FLAG_TRACE_BIT 0x100
+#define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+#endif
+
+/* The string sent by cygwin when it processes a signal.
+ FIXME: This should be in a cygwin include file. */
+#define CYGWIN_SIGNAL_STRING "cygwin: signal"
+
#define CHECK(x) check (x, __FILE__,__LINE__)
#define DEBUG_EXEC(x) if (debug_exec) printf x
#define DEBUG_EVENTS(x) if (debug_events) printf x
/* Forward declaration */
extern struct target_ops child_ops;
-/* The most recently read context. Inspect ContextFlags to see what
- bits are valid. */
+static void child_stop PARAMS ((void));
+static int win32_child_thread_alive PARAMS ((int));
+void child_kill_inferior PARAMS ((void));
-static CONTEXT context;
+/* Thread information structure used to track information that is
+ not available in gdb's thread structure. */
+typedef struct thread_info_struct
+ {
+ struct thread_info_struct *next;
+ DWORD id;
+ HANDLE h;
+ char *name;
+ int suspend_count;
+ CONTEXT context;
+ STACKFRAME sf;
+ } thread_info;
+
+static thread_info thread_head = {NULL};
+
+/* The saved state for a continue after breaking back to gdb. */
+static DWORD continue_status;
/* The process and thread handles for the above context. */
-static HANDLE current_process;
-static HANDLE current_thread;
-static int current_process_id;
-static int current_thread_id;
+static DEBUG_EVENT current_event; /* The current debug event from
+ WaitForDebugEvent */
+static HANDLE current_process_handle; /* Currently executing process */
+static thread_info *current_thread; /* Info on currently selected thread */
+static DWORD main_thread_id; /* Thread ID of the main thread */
/* Counts of things. */
static int exception_count = 0;
/* User options. */
static int new_console = 0;
-static int new_group = 0;
-static int debug_exec = 0; /* show execution */
-static int debug_events = 0; /* show events from kernel */
-static int debug_memory = 0; /* show target memory accesses */
+static int new_group = 1;
+static int debug_exec = 0; /* show execution */
+static int debug_events = 0; /* show events from kernel */
+static int debug_memory = 0; /* show target memory accesses */
static int debug_exceptions = 0; /* show target exceptions */
/* This vector maps GDB's idea of a register's number into an address
- in the win32 exception context vector.
+ in the win32 exception context vector.
- It also contains the bit mask needed to load the register in question.
+ It also contains the bit mask needed to load the register in question.
One day we could read a reg, we could inspect the context we
already have loaded, if it doesn't have the bit set that we need,
the other regs of the group, and then we copy the info in and set
out bit. */
-struct regmappings
- {
- char *incontext;
- int mask;
- };
-
-
-static const struct regmappings mappings[] =
-{
-#ifdef __PPC__
- {(char *) &context.Gpr0, CONTEXT_INTEGER},
- {(char *) &context.Gpr1, CONTEXT_INTEGER},
- {(char *) &context.Gpr2, CONTEXT_INTEGER},
- {(char *) &context.Gpr3, CONTEXT_INTEGER},
- {(char *) &context.Gpr4, CONTEXT_INTEGER},
- {(char *) &context.Gpr5, CONTEXT_INTEGER},
- {(char *) &context.Gpr6, CONTEXT_INTEGER},
- {(char *) &context.Gpr7, CONTEXT_INTEGER},
-
- {(char *) &context.Gpr8, CONTEXT_INTEGER},
- {(char *) &context.Gpr9, CONTEXT_INTEGER},
- {(char *) &context.Gpr10, CONTEXT_INTEGER},
- {(char *) &context.Gpr11, CONTEXT_INTEGER},
- {(char *) &context.Gpr12, CONTEXT_INTEGER},
- {(char *) &context.Gpr13, CONTEXT_INTEGER},
- {(char *) &context.Gpr14, CONTEXT_INTEGER},
- {(char *) &context.Gpr15, CONTEXT_INTEGER},
-
- {(char *) &context.Gpr16, CONTEXT_INTEGER},
- {(char *) &context.Gpr17, CONTEXT_INTEGER},
- {(char *) &context.Gpr18, CONTEXT_INTEGER},
- {(char *) &context.Gpr19, CONTEXT_INTEGER},
- {(char *) &context.Gpr20, CONTEXT_INTEGER},
- {(char *) &context.Gpr21, CONTEXT_INTEGER},
- {(char *) &context.Gpr22, CONTEXT_INTEGER},
- {(char *) &context.Gpr23, CONTEXT_INTEGER},
-
- {(char *) &context.Gpr24, CONTEXT_INTEGER},
- {(char *) &context.Gpr25, CONTEXT_INTEGER},
- {(char *) &context.Gpr26, CONTEXT_INTEGER},
- {(char *) &context.Gpr27, CONTEXT_INTEGER},
- {(char *) &context.Gpr28, CONTEXT_INTEGER},
- {(char *) &context.Gpr29, CONTEXT_INTEGER},
- {(char *) &context.Gpr30, CONTEXT_INTEGER},
- {(char *) &context.Gpr31, CONTEXT_INTEGER},
-
- {(char *) &context.Fpr0, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr1, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr2, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr3, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr4, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr5, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr6, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr7, CONTEXT_FLOATING_POINT},
-
- {(char *) &context.Fpr8, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr9, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr10, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr11, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr12, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr13, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr14, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr15, CONTEXT_FLOATING_POINT},
-
- {(char *) &context.Fpr16, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr17, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr18, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr19, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr20, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr21, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr22, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr23, CONTEXT_FLOATING_POINT},
-
- {(char *) &context.Fpr24, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr25, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr26, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr27, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr28, CONTEXT_FLOATING_POINT},
- {(char *) &context.Fpr29, CONTEXT_FLOATING_POINT},
- {(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},
- {(char *) &context.Lr, CONTEXT_CONTROL},
- {(char *) &context.Ctr, CONTEXT_CONTROL},
-
- {(char *) &context.Xer, CONTEXT_INTEGER},
- {0,0}, /* MQ, but there isn't one */
-#else
- {(char *) &context.Eax, CONTEXT_INTEGER},
- {(char *) &context.Ecx, CONTEXT_INTEGER},
- {(char *) &context.Edx, CONTEXT_INTEGER},
- {(char *) &context.Ebx, CONTEXT_INTEGER},
- {(char *) &context.Esp, CONTEXT_CONTROL},
- {(char *) &context.Ebp, CONTEXT_CONTROL},
- {(char *) &context.Esi, CONTEXT_INTEGER},
- {(char *) &context.Edi, CONTEXT_INTEGER},
- {(char *) &context.Eip, CONTEXT_CONTROL},
- {(char *) &context.EFlags, CONTEXT_CONTROL},
- {(char *) &context.SegCs, CONTEXT_SEGMENTS},
- {(char *) &context.SegSs, CONTEXT_SEGMENTS},
- {(char *) &context.SegDs, CONTEXT_SEGMENTS},
- {(char *) &context.SegEs, CONTEXT_SEGMENTS},
- {(char *) &context.SegFs, CONTEXT_SEGMENTS},
- {(char *) &context.SegGs, CONTEXT_SEGMENTS},
- {&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT},
- {&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT},
-#endif
+#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
+static const int mappings[] =
+{
+ context_offset (Eax),
+ context_offset (Ecx),
+ context_offset (Edx),
+ context_offset (Ebx),
+ context_offset (Esp),
+ context_offset (Ebp),
+ context_offset (Esi),
+ context_offset (Edi),
+ context_offset (Eip),
+ context_offset (EFlags),
+ context_offset (SegCs),
+ context_offset (SegSs),
+ context_offset (SegDs),
+ context_offset (SegEs),
+ context_offset (SegFs),
+ context_offset (SegGs),
+ context_offset (FloatSave.RegisterArea[0 * 10]),
+ context_offset (FloatSave.RegisterArea[1 * 10]),
+ context_offset (FloatSave.RegisterArea[2 * 10]),
+ context_offset (FloatSave.RegisterArea[3 * 10]),
+ context_offset (FloatSave.RegisterArea[4 * 10]),
+ context_offset (FloatSave.RegisterArea[5 * 10]),
+ context_offset (FloatSave.RegisterArea[6 * 10]),
+ context_offset (FloatSave.RegisterArea[7 * 10]),
+ context_offset (FloatSave.ControlWord),
+ context_offset (FloatSave.StatusWord),
+ context_offset (FloatSave.TagWord),
+ context_offset (FloatSave.ErrorSelector),
+ context_offset (FloatSave.ErrorOffset),
+ context_offset (FloatSave.DataSelector),
+ context_offset (FloatSave.DataOffset),
+ context_offset (FloatSave.ErrorSelector)
};
+#undef context_offset
/* 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}};
+/* Find a thread record given a thread id.
+ If get_context then also retrieve the context for this
+ thread. */
+static thread_info *
+thread_rec (DWORD id, int get_context)
+{
+ thread_info *th;
+
+ for (th = &thread_head; (th = th->next) != NULL;)
+ if (th->id == id)
+ {
+ if (!th->suspend_count && get_context)
+ {
+ if (get_context > 0)
+ th->suspend_count = SuspendThread (th->h) + 1;
+ else if (get_context < 0)
+ th->suspend_count = -1;
+
+ th->context.ContextFlags = CONTEXT_DEBUGGER;
+ GetThreadContext (th->h, &th->context);
+ }
+ return th;
+ }
+
+ return NULL;
+}
+
+/* Add a thread to the thread list */
+static thread_info *
+child_add_thread (DWORD id, HANDLE h)
+{
+ thread_info *th;
+
+ if ((th = thread_rec (id, FALSE)))
+ return th;
+
+ th = (thread_info *) xmalloc (sizeof (*th));
+ memset (th, 0, sizeof (*th));
+ th->id = id;
+ th->h = h;
+ th->next = thread_head.next;
+ thread_head.next = th;
+ add_thread (id);
+ return th;
+}
+
+/* Clear out any old thread list and reintialize it to a
+ pristine state. */
+static void
+child_init_thread_list ()
+{
+ thread_info *th = &thread_head;
+
+ DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
+ init_thread_list ();
+ while (th->next != NULL)
+ {
+ thread_info *here = th->next;
+ th->next = here->next;
+ (void) CloseHandle (here->h);
+ free (here);
+ }
+}
+
+/* Delete a thread from the list of threads */
+static void
+child_delete_thread (DWORD id)
+{
+ thread_info *th;
-static void
+ if (info_verbose)
+ printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (id));
+ delete_thread (id);
+
+ for (th = &thread_head;
+ th->next != NULL && th->next->id != id;
+ th = th->next)
+ continue;
+
+ if (th->next != NULL)
+ {
+ thread_info *here = th->next;
+ th->next = here->next;
+ CloseHandle (here->h);
+ free (here);
+ }
+}
+
+static void
check (BOOL ok, const char *file, int line)
{
if (!ok)
}
static void
-child_fetch_inferior_registers (int r)
+do_child_fetch_inferior_registers (int r)
{
- if (r < 0)
+ char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
+ long l;
+ if (r == FCS_REGNUM)
+ {
+ l = *((long *)context_offset) & 0xffff;
+ supply_register (r, (char *) &l);
+ }
+ else if (r == FOP_REGNUM)
+ {
+ l = (*((long *)context_offset) >> 16) & ((1 << 11) - 1);
+ supply_register (r, (char *) &l);
+ }
+ else if (r >= 0)
+ supply_register (r, context_offset);
+ else
{
for (r = 0; r < NUM_REGS; r++)
- child_fetch_inferior_registers (r);
+ do_child_fetch_inferior_registers (r);
}
+}
+
+static void
+child_fetch_inferior_registers (int r)
+{
+ current_thread = thread_rec (inferior_pid, TRUE);
+ do_child_fetch_inferior_registers (r);
+}
+
+static void
+do_child_store_inferior_registers (int r)
+{
+ if (r >= 0)
+ read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]);
else
{
- supply_register (r, mappings[r].incontext);
+ for (r = 0; r < NUM_REGS; r++)
+ do_child_store_inferior_registers (r);
}
}
+/* Store a new register value into the current thread context */
static void
child_store_inferior_registers (int r)
{
- if (r < 0)
+ current_thread = thread_rec (inferior_pid, TRUE);
+ do_child_store_inferior_registers (r);
+}
+
+#include <psapi.h>
+static int psapi_loaded = 0;
+static HMODULE psapi_module_handle = NULL;
+static BOOL WINAPI (*psapi_EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD)= NULL;
+static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD)= NULL;
+static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD)= NULL;
+
+int psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+{
+ DWORD len;
+ MODULEINFO mi;
+ int i;
+ HMODULE dh_buf [ 1 ];
+ HMODULE* DllHandle = dh_buf;
+ DWORD cbNeeded;
+ BOOL ok;
+
+ if (!psapi_loaded ||
+ psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
{
- for (r = 0; r < NUM_REGS; r++)
- child_store_inferior_registers (r);
+ 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;
}
- else
+
+ 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 < cbNeeded / sizeof (HMODULE); i++)
{
- read_register_gen (r, mappings[r].incontext);
+ 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;
+}
/* 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)
+handle_load_dll (PTR dummy)
{
- DEBUG_EVENT * event = (DEBUG_EVENT *)eventp;
+ LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
DWORD dll_name_ptr;
DWORD done;
+ char dll_buf[MAX_PATH + 1];
+ char *p, *dll_name = NULL;
+ struct objfile *objfile;
+ MEMORY_BASIC_INFORMATION minfo;
+ struct section_addr_info section_addrs;
+
+ memset (§ion_addrs, 0, sizeof (section_addrs));
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
- ReadProcessMemory (current_process,
- (DWORD) event->u.LoadDll.lpImageName,
- (char *) &dll_name_ptr,
- sizeof (dll_name_ptr), &done);
+ if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
+ dll_buf[0] = dll_buf[sizeof(dll_buf) - 1] = '\0';
- /* See if we could read the address of a string, and that the
- address isn't null. */
+ dll_name = dll_buf;
- if (done == sizeof (dll_name_ptr) && dll_name_ptr)
+ /* 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 (dll_name == NULL || *dll_name == '\0')
{
- char *dll_name, *dll_basename;
- struct objfile *objfile;
- char unix_dll_name[MAX_PATH];
- int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char);
+ int size = event->fUnicode ? sizeof (WCHAR) : sizeof (char);
int len = 0;
char b[2];
+
+ ReadProcessMemory (current_process_handle,
+ (LPCVOID) event->lpImageName,
+ (char *) &dll_name_ptr,
+ sizeof (dll_name_ptr), &done);
+
+ /* See if we could read the address of a string, and that the
+ address isn't null. */
+
+ if (done != sizeof (dll_name_ptr) || !dll_name_ptr)
+ return 1;
+
do
{
- ReadProcessMemory (current_process,
- dll_name_ptr + len * size,
+ ReadProcessMemory (current_process_handle,
+ (LPCVOID) (dll_name_ptr + len * size),
&b,
size,
&done);
dll_name = alloca (len);
- if (event->u.LoadDll.fUnicode)
+ if (event->fUnicode)
{
WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
- ReadProcessMemory (current_process,
- dll_name_ptr,
+ ReadProcessMemory (current_process_handle,
+ (LPCVOID) dll_name_ptr,
unicode_dll_name,
len * sizeof (WCHAR),
&done);
}
else
{
- ReadProcessMemory (current_process,
- dll_name_ptr,
+ ReadProcessMemory (current_process_handle,
+ (LPCVOID) dll_name_ptr,
dll_name,
len,
&done);
}
-
- /* 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. */
-
- if (!(dll_basename = strrchr(dll_name, '\\')))
- dll_basename = strrchr(dll_name, '/');
-
- ALL_OBJFILES(objfile)
- {
- char *objfile_basename;
- if (!(objfile_basename = strrchr(objfile->name, '\\')))
- objfile_basename = strrchr(objfile->name, '/');
-
- if (dll_basename && objfile_basename &&
- strcmp(dll_basename+1, objfile_basename+1) == 0)
- {
- printf_unfiltered ("%s (symbols previously loaded)\n",
- dll_basename + 1);
- return 1;
- }
- }
-
-
- context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
- GetThreadContext (current_thread, &context);
-
- /* 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.
-
- FIXME: Is this the real reason that we need the 0x1000 ? */
-
-
- symbol_file_add (unix_dll_name, 0,
- (int) event->u.LoadDll.lpBaseOfDll + 0x1000, 0, 0, 0);
-
- printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll,
- unix_dll_name);
}
+
+ if (!dll_name)
+ return 1;
+
+ while ((p = strchr (dll_name, '\\')))
+ *p = '/';
+
+ /* 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.
+
+ FIXME: Is this the real reason that we need the 0x1000 ? */
+
+ printf_unfiltered ("%x:%s", event->lpBaseOfDll, dll_name);
+ section_addrs.text_addr = (int) event->lpBaseOfDll + 0x1000;
+ symbol_file_add (dll_name, 0, §ion_addrs, 0, OBJF_SHARED);
+ printf_unfiltered ("\n");
+
return 1;
}
+/* 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;
-static void
-handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus)
+ 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);
+ }
+ 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;
+ }
+
+ free (s);
+ return gotasig;
+}
+
+static int
+handle_exception (struct target_waitstatus *ourstatus)
{
int i;
int done = 0;
+ thread_info *th;
+
ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ /* Record the context of the current thread */
+ th = thread_rec (current_event.dwThreadId, -1);
- switch (event->u.Exception.ExceptionRecord.ExceptionCode)
+ switch (current_event.u.Exception.ExceptionRecord.ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n",
- event->u.Exception.ExceptionRecord.ExceptionAddress));
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ case STATUS_FLOAT_UNDERFLOW:
+ case STATUS_FLOAT_DIVIDE_BY_ZERO:
+ case STATUS_FLOAT_OVERFLOW:
+ case STATUS_INTEGER_DIVIDE_BY_ZERO:
+ DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case STATUS_STACK_OVERFLOW:
DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- event->u.Exception.ExceptionRecord.ExceptionAddress));
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case EXCEPTION_BREAKPOINT:
DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n",
- event->u.Exception.ExceptionRecord.ExceptionAddress));
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08x\n",
- event->u.Exception.ExceptionRecord.ExceptionAddress));
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
ourstatus->value.sig = TARGET_SIGNAL_INT;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case EXCEPTION_SINGLE_STEP:
DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n",
- event->u.Exception.ExceptionRecord.ExceptionAddress));
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
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 (current_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);
+ current_event.u.Exception.ExceptionRecord.ExceptionCode,
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
}
- context.ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT;
- GetThreadContext (current_thread, &context);
exception_count++;
+ return 1;
+}
+
+/* Resume all artificially suspended threads if we are continuing
+ execution */
+static BOOL
+child_continue (int id)
+{
+ int i;
+ thread_info *th;
+ BOOL res;
+
+ DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
+ current_event.dwProcessId, current_event.dwThreadId));
+ 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 == th->id)) && th->suspend_count)
+ {
+ for (i = 0; i < th->suspend_count; i++)
+ (void) ResumeThread (th->h);
+ th->suspend_count = 0;
+ }
+
+ return res;
+}
+
+static int
+get_child_debug_event (int pid, struct target_waitstatus *ourstatus,
+ DWORD *event_code, int *retval)
+{
+ BOOL debug_event;
+ int breakout = 1;
+
+ if (!(debug_event = WaitForDebugEvent (¤t_event, 20)))
+ {
+ breakout = *retval = *event_code = 0;
+ goto out;
+ }
+
+ event_count++;
+ continue_status = DBG_CONTINUE;
+ *retval = 0;
+
+ switch (*event_code = current_event.dwDebugEventCode)
+ {
+ 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"));
+ /* Record the existence of this thread */
+ child_add_thread (current_event.dwThreadId,
+ current_event.u.CreateThread.hThread);
+ if (info_verbose)
+ printf_unfiltered ("[New %s]\n",
+ target_pid_to_str (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"));
+ child_delete_thread (current_event.dwThreadId);
+ 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"));
+ current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+
+ main_thread_id = inferior_pid = current_event.dwThreadId;
+ /* Add the main thread */
+ current_thread = child_add_thread (inferior_pid,
+ current_event.u.CreateProcessInfo.hThread);
+ 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"));
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
+ CloseHandle (current_process_handle);
+ *retval = current_event.dwProcessId;
+ goto out;
+
+ 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"));
+ catch_errors (handle_load_dll, NULL, "", 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",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_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",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXCEPTION_DEBUG_EVENT"));
+ if (handle_exception (ourstatus)) /* sets continue_status */
+ {
+ *retval = current_event.dwThreadId;
+ goto out;
+ }
+ break;
+
+ case OUTPUT_DEBUG_STRING_EVENT:
+ 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 (handle_output_debug_string (ourstatus))
+ {
+ *retval = main_thread_id;
+ goto out;
+ }
+ break;
+ default:
+ printf_unfiltered ("gdb: kernel event for pid=%d tid=%d\n",
+ current_event.dwProcessId,
+ current_event.dwThreadId);
+ printf_unfiltered (" unknown event code %d\n",
+ current_event.dwDebugEventCode);
+ break;
+ }
+
+ breakout = 0;
+ CHECK (child_continue (-1));
+ continue_status = 0;
+
+out:
+ return breakout;
}
+
+/* Wait for interesting events to occur in the target process. */
static int
child_wait (int pid, struct target_waitstatus *ourstatus)
{
+ DWORD event_code;
+ int retval;
+
/* 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. But some of these exceptions mark
+ 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)
{
- DEBUG_EVENT event;
- BOOL t = WaitForDebugEvent (&event, INFINITE);
- char *p;
-
- event_count++;
+ if (continue_status != 0)
+ CHECK (child_continue (-1));
+ if (get_child_debug_event (pid, ourstatus, &event_code, &retval))
+ return retval;
+ else
+ {
+ int detach = 0;
- current_thread_id = event.dwThreadId;
- current_process_id = event.dwProcessId;
+ if (ui_loop_hook != NULL)
+ detach = ui_loop_hook (0);
- 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,
- "CREATE_THREAD_DEBUG_EVENT"));
- break;
- case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- event.dwProcessId, event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
- break;
- case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- event.dwProcessId, event.dwThreadId,
- "CREATE_PROCESS_DEBUG_EVENT"));
- break;
-
- 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"));
- handle_exception (&event, ourstatus);
- return current_process_id;
-
- 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;
+ if (detach)
+ child_kill_inferior ();
}
- DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
- current_process_id, current_thread_id));
- CHECK (ContinueDebugEvent (current_process_id,
- current_thread_id,
- DBG_CONTINUE));
}
}
-
/* Attach to process PID, then initialize for debugging it. */
static void
if (!args)
error_no_arg ("process-id to attach");
- current_process_id = strtoul (args, 0, 0);
+ current_event.dwProcessId = strtoul (args, 0, 0);
- ok = DebugActiveProcess (current_process_id);
+ ok = DebugActiveProcess (current_event.dwProcessId);
if (!ok)
error ("Can't attach to process.");
-
exception_count = 0;
event_count = 0;
if (exec_file)
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
- target_pid_to_str (current_process_id));
+ target_pid_to_str (current_event.dwProcessId));
else
printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (current_process_id));
+ target_pid_to_str (current_event.dwProcessId));
gdb_flush (gdb_stdout);
}
- inferior_pid = current_process_id;
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
char real_path[MAXPATHLEN];
char *winenv;
char *temp;
- int envlen;
+ int envlen;
int i;
-
STARTUPINFO si;
PROCESS_INFORMATION pi;
struct target_waitstatus dummy;
BOOL ret;
DWORD flags;
char *args;
+ DWORD event_code;
if (!exec_file)
{
cygwin32_conv_to_win32_path (exec_file, real_path);
- flags = DEBUG_ONLY_THIS_PROCESS;
+ flags = DEBUG_ONLY_THIS_PROCESS;
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
to posix style if necessary. */
static const char *conv_path_names[] =
- {
- "PATH=",
- 0
- };
+ {
+ "PATH=",
+ 0
+ };
/* CreateProcess takes the environment list as a null terminated set of
strings (i.e. two nulls terminate the list). */
winenv = alloca (envlen + 1);
/* Copy env strings into new buffer. */
- for (temp = winenv, i = 0; env[i] && *env[i]; i++)
+ for (temp = winenv, i = 0; env[i] && *env[i]; i++)
{
int j, len;
}
ret = CreateProcess (0,
- args, /* command line */
+ args, /* command line */
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
&si,
&pi);
if (!ret)
- error ("Error creating process %s, (error %d)\n", exec_file, GetLastError());
+ 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;
+ current_process_handle = pi.hProcess;
+ current_event.dwProcessId = pi.dwProcessId;
+ memset (¤t_event, 0, sizeof (current_event));
+ inferior_pid = current_event.dwThreadId = pi.dwThreadId;
push_target (&child_ops);
- init_thread_list ();
+ child_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);
+ /* Run until process and threads are loaded */
+ do
+ get_child_debug_event (inferior_pid, &dummy, &event_code, &ret);
+ while (event_code != EXCEPTION_DEBUG_EVENT);
+
+ SymSetOptions (SYMOPT_DEFERRED_LOADS);
+ SymInitialize (current_process_handle, NULL, TRUE);
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
}
static void
child_mourn_inferior ()
{
+ continue_status = DBG_CONTINUE;
+ (void) child_continue (-1);
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"));
- CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
- registers_changed(); /* refresh register state */
+ CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
+ registers_changed (); /* refresh register state */
}
int
{
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);
+ 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%08x\n",
len, memaddr));
- ReadProcessMemory (current_process, memaddr, our, len, &done);
+ ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len,
+ &done);
}
return done;
}
void
child_kill_inferior (void)
{
- CHECK (TerminateProcess (current_process, 0));
- CHECK (CloseHandle (current_process));
- CHECK (CloseHandle (current_thread));
- target_mourn_inferior(); /* or just child_mourn_inferior? */
+ CHECK (TerminateProcess (current_process_handle, 0));
+
+ for (;;)
+ {
+ continue_status = DBG_CONTINUE;
+ if (!child_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 (int pid, int step, enum target_signal signal)
+child_resume (int pid, int step, enum target_signal sig)
{
- DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, signal=%d);\n",
- pid, step, signal));
+ int i;
+ thread_info *th;
+ 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 (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;
+ th->context.EFlags |= FLAG_TRACE_BIT;
#endif
}
- if (context.ContextFlags)
+ if (th->context.ContextFlags)
{
- CHECK (SetThreadContext (current_thread, &context));
- context.ContextFlags = 0;
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
}
- if (signal)
- {
- fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n");
- }
+ /* Allow continuing with the same signal that interrupted us.
+ Otherwise complain. */
- 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));
+ child_continue (pid);
}
static void
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 */
-};
+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_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 = 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.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,
add_show_from_set
(add_set_cmd ("debugexceptions", class_support, var_boolean,
(char *) &debug_exceptions,
- "Set whether to display kernel exceptions in child process.",
+ "Set whether to display kernel exceptions in child process.",
&setlist),
&showlist);
add_target (&child_ops);
}
+
+/* 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 (int pid)
+{
+ return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
+ FALSE : TRUE;
+}
+
+/* Convert pid to printable format. */
+char *
+cygwin_pid_to_str (int pid)
+{
+ static char buf[80];
+ if (pid == current_event.dwProcessId)
+ sprintf (buf, "process %d", pid);
+ else
+ sprintf (buf, "thread %d.0x%x", current_event.dwProcessId, pid);
+ return buf;
+}
+
+static LPVOID __stdcall
+sfta(HANDLE h, DWORD d)
+{
+ return NULL;
+}
+
+static DWORD __stdcall
+sgmb(HANDLE h, DWORD d)
+{
+#if 0
+ return 4;
+#else
+ return SymGetModuleBase (h, d) ?: 4;
+#endif
+}
+
+CORE_ADDR
+child_frame_chain(struct frame_info *f)
+{
+ STACKFRAME *sf = (STACKFRAME *) f->extra_info;
+ if (!StackWalk (IMAGE_FILE_MACHINE_I386, current_process_handle,
+ current_thread->h, sf, NULL, NULL, SymFunctionTableAccess, sgmb, NULL) ||
+ !sf->AddrReturn.Offset)
+ return 0;
+ return sf->AddrFrame.Offset;
+}
+
+CORE_ADDR
+child_frame_saved_pc(struct frame_info *f)
+{
+ STACKFRAME *sf = (STACKFRAME *) f->extra_info;
+ return sf->AddrReturn.Offset;
+}
+
+void
+child_init_frame(int leaf, struct frame_info *f)
+{
+ STACKFRAME *sf;
+
+ if (f->next && f->next->extra_info)
+ f->extra_info = f->next->extra_info;
+ else if (f->prev && f->prev->extra_info)
+ f->extra_info = f->prev->extra_info;
+ else
+ {
+ sf = (STACKFRAME *) frame_obstack_alloc (sizeof (*sf));
+ f->extra_info = (struct frame_extra_info *) sf;
+ memset (sf, 0, sizeof(*sf));
+ sf->AddrPC.Offset = f->pc;
+ sf->AddrPC.Mode = AddrModeFlat;
+ sf->AddrStack.Offset = current_thread->context.Esp;
+ sf->AddrStack.Mode = AddrModeFlat;
+ sf->AddrFrame.Offset = f->frame;
+ sf->AddrFrame.Mode = AddrModeFlat;
+ }
+}
projects / deliverable / binutils-gdb.git / blobdiff