/* Target-vector operations for controlling windows child processes, for GDB.
- Copyright (C) 1995-2020 Free Software Foundation, Inc.
+ Copyright (C) 1995-2021 Free Software Foundation, Inc.
Contributed by Cygnus Solutions, A Red Hat Company.
#include "gdbsupport/pathstuff.h"
#include "gdbsupport/gdb_wait.h"
#include "nat/windows-nat.h"
+#include "gdbsupport/symbol.h"
using namespace windows_nat;
#endif
#define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \
- | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \
- | CONTEXT_EXTENDED_REGISTERS
+ | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS \
+ | CONTEXT_EXTENDED_REGISTERS
static uintptr_t dr[8];
static int debug_registers_changed;
#endif
#define CHECK(x) check (x, __FILE__,__LINE__)
-#define DEBUG_EXEC(x) if (debug_exec) debug_printf x
-#define DEBUG_EVENTS(x) if (debug_events) debug_printf x
-#define DEBUG_MEM(x) if (debug_memory) debug_printf x
-#define DEBUG_EXCEPT(x) if (debug_exceptions) debug_printf x
+#define DEBUG_EXEC(fmt, ...) \
+ debug_prefixed_printf_cond (debug_exec, "windows exec", fmt, ## __VA_ARGS__)
+#define DEBUG_EVENTS(fmt, ...) \
+ debug_prefixed_printf_cond (debug_events, "windows events", fmt, \
+ ## __VA_ARGS__)
+#define DEBUG_MEM(fmt, ...) \
+ debug_prefixed_printf_cond (debug_memory, "windows mem", fmt, \
+ ## __VA_ARGS__)
+#define DEBUG_EXCEPT(fmt, ...) \
+ debug_prefixed_printf_cond (debug_exceptions, "windows except", fmt, \
+ ## __VA_ARGS__)
static void cygwin_set_dr (int i, CORE_ADDR addr);
static void cygwin_set_dr7 (unsigned long val);
static int saw_create;
static int open_process_used = 0;
#ifdef __x86_64__
-static bool wow64_process = false;
+static void *wow64_dbgbreak;
#endif
/* User options. */
void resume (ptid_t, int , enum gdb_signal) override;
- ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
+ ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
void fetch_registers (struct regcache *, int) override;
void store_registers (struct regcache *, int) override;
static void
windows_init_thread_list (void)
{
- DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
+ DEBUG_EVENTS ("called");
init_thread_list ();
for (windows_thread_info *here : thread_list)
return so;
}
+static bool windows_add_dll (LPVOID);
+
/* See nat/windows-nat.h. */
void
(source: MSDN LOAD_DLL_DEBUG_INFO structure). */
dll_name = get_image_name (current_process_handle,
event->lpImageName, event->fUnicode);
- if (!dll_name)
- return;
+ /* If the DLL name could not be gleaned via lpImageName, try harder
+ by enumerating all the DLLs loaded into the inferior, looking for
+ one that is loaded at base address = lpBaseOfDll. */
+ if (dll_name != nullptr)
+ {
- solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
- solib_end = solib_end->next;
+ solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
+ solib_end = solib_end->next;
+ }
+ else if (event->lpBaseOfDll != nullptr
+ && windows_add_dll (event->lpBaseOfDll))
+ dll_name = solib_end->so_name;
+
+ if (dll_name == nullptr)
+ return;
lm_info_windows *li = (lm_info_windows *) solib_end->lm_info;
- DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
- host_address_to_string (li->load_addr)));
+ DEBUG_EVENTS ("Loading dll \"%s\" at %s.", solib_end->so_name,
+ host_address_to_string (li->load_addr));
}
static void
so->next = sodel->next;
if (!so->next)
solib_end = so;
- DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
+ DEBUG_EVENTS ("Unloading dll \"%s\".", sodel->so_name);
windows_free_so (sodel);
return;
{
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
- DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
+ DEBUG_EXCEPT ("Cannot continue with signal %d here.", sig);
}
else if (sig == last_sig)
continue_status = DBG_EXCEPTION_NOT_HANDLED;
}
if (continue_status == DBG_CONTINUE)
{
- DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
+ DEBUG_EXCEPT ("Cannot continue with signal %d.", sig);
}
}
#endif
- DEBUG_EXCEPT(("Can only continue with received signal %d.\n",
- last_sig));
+ DEBUG_EXCEPT ("Can only continue with received signal %d.",
+ last_sig);
}
last_sig = GDB_SIGNAL_0;
- DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=0x%x, step=%d, sig=%d);\n",
- ptid.pid (), (unsigned) ptid.lwp (), step, sig));
+ DEBUG_EXEC ("pid=%d, tid=0x%x, step=%d, sig=%d",
+ ptid.pid (), (unsigned) ptid.lwp (), step, sig);
/* Get context for currently selected thread. */
th = thread_rec (inferior_ptid, DONT_INVALIDATE_CONTEXT);
if (!new_console && !attach_flag)
return TRUE;
- if (!DebugBreakProcess (current_process_handle))
- warning (_("Could not interrupt program. "
- "Press Ctrl-c in the program console."));
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ /* Call DbgUiRemoteBreakin of the 32bit ntdll.dll in the target process.
+ DebugBreakProcess would call the one of the 64bit ntdll.dll, which
+ can't be correctly handled by gdb. */
+ if (wow64_dbgbreak == nullptr)
+ {
+ CORE_ADDR addr;
+ if (!find_minimal_symbol_address ("ntdll!DbgUiRemoteBreakin",
+ &addr, 0))
+ wow64_dbgbreak = (void *) addr;
+ }
+
+ if (wow64_dbgbreak != nullptr)
+ {
+ HANDLE thread = CreateRemoteThread (current_process_handle, NULL,
+ 0, (LPTHREAD_START_ROUTINE)
+ wow64_dbgbreak, NULL, 0, NULL);
+ if (thread)
+ CloseHandle (thread);
+ }
+ }
+ else
+#endif
+ {
+ if (!DebugBreakProcess (current_process_handle))
+ warning (_("Could not interrupt program. "
+ "Press Ctrl-c in the program console."));
+ }
/* Return true to tell that Ctrl-C has been handled. */
return TRUE;
switch (event_code)
{
case CREATE_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_THREAD_DEBUG_EVENT");
if (saw_create != 1)
{
inferior *inf = find_inferior_pid (this, current_event.dwProcessId);
/* Record the existence of this thread. */
thread_id = current_event.dwThreadId;
windows_add_thread
- (ptid_t (current_event.dwProcessId, current_event.dwThreadId, 0),
+ (ptid_t (current_event.dwProcessId, current_event.dwThreadId, 0),
current_event.u.CreateThread.hThread,
current_event.u.CreateThread.lpThreadLocalBase,
false /* main_thread_p */);
break;
case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_THREAD_DEBUG_EVENT");
windows_delete_thread (ptid_t (current_event.dwProcessId,
current_event.dwThreadId, 0),
current_event.u.ExitThread.dwExitCode,
break;
case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_PROCESS_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_PROCESS_DEBUG_EVENT");
CloseHandle (current_event.u.CreateProcessInfo.hFile);
if (++saw_create != 1)
break;
current_process_handle = current_event.u.CreateProcessInfo.hProcess;
/* Add the main thread. */
windows_add_thread
- (ptid_t (current_event.dwProcessId,
+ (ptid_t (current_event.dwProcessId,
current_event.dwThreadId, 0),
current_event.u.CreateProcessInfo.hThread,
current_event.u.CreateProcessInfo.lpThreadLocalBase,
break;
case EXIT_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_PROCESS_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_PROCESS_DEBUG_EVENT");
if (!windows_initialization_done)
{
target_terminal::ours ();
break;
case LOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "LOAD_DLL_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "LOAD_DLL_DEBUG_EVENT");
CloseHandle (current_event.u.LoadDll.hFile);
if (saw_create != 1 || ! windows_initialization_done)
break;
break;
case UNLOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "UNLOAD_DLL_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "UNLOAD_DLL_DEBUG_EVENT");
if (saw_create != 1 || ! windows_initialization_done)
break;
catch_errors (handle_unload_dll);
break;
case EXCEPTION_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXCEPTION_DEBUG_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXCEPTION_DEBUG_EVENT");
if (saw_create != 1)
break;
switch (handle_exception (ourstatus, debug_exceptions))
break;
case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */
- DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "OUTPUT_DEBUG_STRING_EVENT"));
+ DEBUG_EVENTS ("kernel event for pid=%u tid=0x%x code=%s",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "OUTPUT_DEBUG_STRING_EVENT");
if (saw_create != 1)
break;
thread_id = handle_output_debug_string (ourstatus);
{
/* Pending stop. See the comment by the definition of
"pending_stops" for details on why this is needed. */
- DEBUG_EVENTS (("get_windows_debug_event - "
- "unexpected stop in 0x%x (expecting 0x%x)\n",
- thread_id, desired_stop_thread_id));
+ DEBUG_EVENTS ("get_windows_debug_event - "
+ "unexpected stop in 0x%x (expecting 0x%x)",
+ thread_id, desired_stop_thread_id);
if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT
&& ((current_event.u.Exception.ExceptionRecord.ExceptionCode
/* Wait for interesting events to occur in the target process. */
ptid_t
windows_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
- int options)
+ target_wait_flags options)
{
int pid = -1;
static void
windows_add_all_dlls (void)
+{
+ windows_add_dll (NULL);
+}
+
+/* Iterate over all DLLs currently mapped by our inferior, looking for
+ a DLL which is loaded at LOAD_ADDR. If found, add the DLL to our
+ list of solibs and return 'true'; otherwise do nothing and return
+ 'false'. LOAD_ADDR NULL means add all DLLs to the list of solibs;
+ this is used when the inferior finishes its initialization, and all
+ the DLLs it statically depends on are presumed loaded. */
+
+static bool
+windows_add_dll (LPVOID load_addr)
{
HMODULE dummy_hmodule;
DWORD cb_needed;
if (EnumProcessModulesEx (current_process_handle, &dummy_hmodule,
sizeof (HMODULE), &cb_needed,
LIST_MODULES_32BIT) == 0)
- return;
+ return false;
}
else
#endif
{
if (EnumProcessModules (current_process_handle, &dummy_hmodule,
sizeof (HMODULE), &cb_needed) == 0)
- return;
+ return false;
}
if (cb_needed < 1)
- return;
+ return false;
hmodules = (HMODULE *) alloca (cb_needed);
#ifdef __x86_64__
if (EnumProcessModulesEx (current_process_handle, hmodules,
cb_needed, &cb_needed,
LIST_MODULES_32BIT) == 0)
- return;
+ return false;
}
else
#endif
{
if (EnumProcessModules (current_process_handle, hmodules,
cb_needed, &cb_needed) == 0)
- return;
+ return false;
}
char system_dir[__PMAX];
if (GetModuleInformation (current_process_handle, hmodules[i],
&mi, sizeof (mi)) == 0)
continue;
+
if (GetModuleFileNameEx (current_process_handle, hmodules[i],
dll_name, sizeof (dll_name)) == 0)
continue;
name = syswow_dll_path.c_str();
}
- solib_end->next = windows_make_so (name, mi.lpBaseOfDll);
- solib_end = solib_end->next;
+ /* Record the DLL if either LOAD_ADDR is NULL or the address
+ at which the DLL was loaded is equal to LOAD_ADDR. */
+ if (!(load_addr != nullptr && mi.lpBaseOfDll != load_addr))
+ {
+ solib_end->next = windows_make_so (name, mi.lpBaseOfDll);
+ solib_end = solib_end->next;
+ if (load_addr != nullptr)
+ return true;
+ }
}
+ return load_addr == nullptr ? true : false;
}
void
#endif
current_event.dwProcessId = pid;
memset (¤t_event, 0, sizeof (current_event));
- if (!target_is_pushed (this))
- push_target (this);
+ inf = current_inferior ();
+ if (!inf->target_is_pushed (this))
+ inf->push_target (this);
disable_breakpoints_in_shlibs ();
windows_clear_solib ();
clear_proceed_status (0);
windows_set_segment_register_p (i386_windows_segment_register_p);
}
- inf = current_inferior ();
inferior_appeared (inf, pid);
inf->attach_flag = attaching;
mbstowcs (copy, env[i], len);
equalpos = wcschr (copy, L'=');
if (equalpos)
- *equalpos = L'\0';
+ *equalpos = L'\0';
SetEnvironmentVariableW (copy, NULL);
}
xfree (copy);
void
windows_nat_target::interrupt ()
{
- DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
+ DEBUG_EVENTS ("GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)");
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
registers_changed (); /* refresh register state */
}
if (writebuf != NULL)
{
- DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n",
- pulongest (len), core_addr_to_string (memaddr)));
+ DEBUG_MEM ("write target memory, %s bytes at %s",
+ pulongest (len), core_addr_to_string (memaddr));
success = WriteProcessMemory (current_process_handle,
(LPVOID) (uintptr_t) memaddr, writebuf,
len, &done);
}
else
{
- DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n",
- pulongest (len), core_addr_to_string (memaddr)));
+ DEBUG_MEM ("read target memory, %s bytes at %s",
+ pulongest (len), core_addr_to_string (memaddr));
success = ReadProcessMemory (current_process_handle,
(LPCVOID) (uintptr_t) memaddr, readbuf,
len, &done);
void
windows_nat_target::close ()
{
- DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
- inferior_ptid.pid ()));
+ DEBUG_EVENTS ("inferior_ptid=%d\n", inferior_ptid.pid ());
}
/* Convert pid to printable format. */
#endif
GPA (hm, GetModuleInformation);
GetModuleFileNameEx = (GetModuleFileNameEx_ftype *)
- GetProcAddress (hm, GetModuleFileNameEx_name);
+ GetProcAddress (hm, GetModuleFileNameEx_name);
}
if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
projects / deliverable / binutils-gdb.git / blobdiff