/* Low level interface to Windows debugging, for gdbserver.
- Copyright (C) 2006-2020 Free Software Foundation, Inc.
+ Copyright (C) 2006-2023 Free Software Foundation, Inc.
Contributed by Leo Zayas. Based on "win32-nat.c" from GDB.
#include "server.h"
#include "regcache.h"
-#include "gdb/fileio.h"
+#include "gdbsupport/fileio.h"
#include "mem-break.h"
#include "win32-low.h"
#include "gdbthread.h"
#include "gdbsupport/common-inferior.h"
#include "gdbsupport/gdb_wait.h"
+using namespace windows_nat;
+
+/* See win32-low.h. */
+gdbserver_windows_process windows_process;
+
#ifndef USE_WIN32API
#include <sys/cygwin.h>
#endif
#define _T(x) TEXT (x)
#endif
-#ifndef COUNTOF
-#define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0]))
-#endif
-
-#ifdef _WIN32_WCE
-# define GETPROCADDRESS(DLL, PROC) \
- ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC)))
-#else
-# define GETPROCADDRESS(DLL, PROC) \
- ((winapi_ ## PROC) GetProcAddress (DLL, #PROC))
-#endif
-
int using_threads = 1;
-/* Globals. */
-static int attaching = 0;
-static HANDLE current_process_handle = NULL;
-static DWORD current_process_id = 0;
-static DWORD main_thread_id = 0;
-static EXCEPTION_RECORD siginfo_er; /* Contents of $_siginfo */
-static enum gdb_signal last_sig = GDB_SIGNAL_0;
-
-/* The current debug event from WaitForDebugEvent. */
-static DEBUG_EVENT current_event;
-
-/* A status that hasn't been reported to the core yet, and so
- win32_wait should return it next, instead of fetching the next
- debug event off the win32 API. */
-static struct target_waitstatus cached_status;
-
-/* Non zero if an interrupt request is to be satisfied by suspending
- all threads. */
-static int soft_interrupt_requested = 0;
-
-/* Non zero if the inferior is stopped in a simulated breakpoint done
- by suspending all the threads. */
-static int faked_breakpoint = 0;
-
const struct target_desc *win32_tdesc;
-
-#define NUM_REGS (the_low_target.num_regs)
-
-typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId);
-typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit);
-typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE);
-typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD);
-
-#ifndef _WIN32_WCE
-static void win32_add_all_dlls (void);
+#ifdef __x86_64__
+const struct target_desc *wow64_win32_tdesc;
#endif
+#define NUM_REGS (the_low_target.num_regs ())
+
/* Get the thread ID from the current selected inferior (the current
thread). */
static ptid_t
/* Get the thread context of the thread associated with TH. */
static void
-win32_get_thread_context (win32_thread_info *th)
+win32_get_thread_context (windows_thread_info *th)
{
- memset (&th->context, 0, sizeof (CONTEXT));
- (*the_low_target.get_thread_context) (th);
-#ifdef _WIN32_WCE
- memcpy (&th->base_context, &th->context, sizeof (CONTEXT));
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ memset (&th->wow64_context, 0, sizeof (WOW64_CONTEXT));
+ else
#endif
+ memset (&th->context, 0, sizeof (CONTEXT));
+ (*the_low_target.get_thread_context) (th);
}
/* Set the thread context of the thread associated with TH. */
static void
-win32_set_thread_context (win32_thread_info *th)
+win32_set_thread_context (windows_thread_info *th)
{
-#ifdef _WIN32_WCE
- /* Calling SuspendThread on a thread that is running kernel code
- will report that the suspending was successful, but in fact, that
- will often not be true. In those cases, the context returned by
- GetThreadContext will not be correct by the time the thread
- stops, hence we can't set that context back into the thread when
- resuming - it will most likely crash the inferior.
- Unfortunately, there is no way to know when the thread will
- really stop. To work around it, we'll only write the context
- back to the thread when either the user or GDB explicitly change
- it between stopping and resuming. */
- if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0)
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ Wow64SetThreadContext (th->h, &th->wow64_context);
+ else
#endif
SetThreadContext (th->h, &th->context);
}
/* Set the thread context of the thread associated with TH. */
static void
-win32_prepare_to_resume (win32_thread_info *th)
+win32_prepare_to_resume (windows_thread_info *th)
{
if (the_low_target.prepare_to_resume != NULL)
(*the_low_target.prepare_to_resume) (th);
/* See win32-low.h. */
void
-win32_require_context (win32_thread_info *th)
+win32_require_context (windows_thread_info *th)
{
- if (th->context.ContextFlags == 0)
+ DWORD context_flags;
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ context_flags = th->wow64_context.ContextFlags;
+ else
+#endif
+ context_flags = th->context.ContextFlags;
+ if (context_flags == 0)
{
- if (!th->suspended)
- {
- if (SuspendThread (th->h) == (DWORD) -1)
- {
- DWORD err = GetLastError ();
- OUTMSG (("warning: SuspendThread failed in thread_rec, "
- "(error %d): %s\n", (int) err, strwinerror (err)));
- }
- else
- th->suspended = 1;
- }
-
+ th->suspend ();
win32_get_thread_context (th);
}
}
-/* Find a thread record given a thread id. If GET_CONTEXT is set then
- also retrieve the context for this thread. */
-static win32_thread_info *
-thread_rec (ptid_t ptid, int get_context)
+/* See nat/windows-nat.h. */
+
+windows_thread_info *
+gdbserver_windows_process::thread_rec
+ (ptid_t ptid, thread_disposition_type disposition)
{
thread_info *thread = find_thread_ptid (ptid);
if (thread == NULL)
return NULL;
- win32_thread_info *th = (win32_thread_info *) thread_target_data (thread);
- if (get_context)
+ windows_thread_info *th = (windows_thread_info *) thread_target_data (thread);
+ if (disposition != DONT_INVALIDATE_CONTEXT)
win32_require_context (th);
return th;
}
/* Add a thread to the thread list. */
-static win32_thread_info *
+static windows_thread_info *
child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb)
{
- win32_thread_info *th;
+ windows_thread_info *th;
ptid_t ptid = ptid_t (pid, tid, 0);
- if ((th = thread_rec (ptid, FALSE)))
+ if ((th = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT)))
return th;
- th = XCNEW (win32_thread_info);
- th->tid = tid;
- th->h = h;
- th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
+ CORE_ADDR base = (CORE_ADDR) (uintptr_t) tlb;
+#ifdef __x86_64__
+ /* For WOW64 processes, this is actually the pointer to the 64bit TIB,
+ and the 32bit TIB is exactly 2 pages after it. */
+ if (windows_process.wow64_process)
+ base += 2 * 4096; /* page size = 4096 */
+#endif
+ th = new windows_thread_info (tid, h, base);
add_thread (ptid, th);
static void
delete_thread_info (thread_info *thread)
{
- win32_thread_info *th = (win32_thread_info *) thread_target_data (thread);
+ windows_thread_info *th = (windows_thread_info *) thread_target_data (thread);
remove_thread (thread);
- CloseHandle (th->h);
- free (th);
+ delete th;
}
/* Delete a thread from the list of threads. */
bool
win32_process_target::supports_z_point_type (char z_type)
{
- return (the_low_target.supports_z_point_type != NULL
- && the_low_target.supports_z_point_type (z_type));
+ return (z_type == Z_PACKET_SW_BP
+ || (the_low_target.supports_z_point_type != NULL
+ && the_low_target.supports_z_point_type (z_type)));
}
int
win32_process_target::insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
int size, raw_breakpoint *bp)
{
- if (the_low_target.insert_point != NULL)
+ if (type == raw_bkpt_type_sw)
+ return insert_memory_breakpoint (bp);
+ else if (the_low_target.insert_point != NULL)
return the_low_target.insert_point (type, addr, size, bp);
else
/* Unsupported (see target.h). */
win32_process_target::remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
int size, raw_breakpoint *bp)
{
- if (the_low_target.remove_point != NULL)
+ if (type == raw_bkpt_type_sw)
+ return remove_memory_breakpoint (bp);
+ else if (the_low_target.remove_point != NULL)
return the_low_target.remove_point (type, addr, size, bp);
else
/* Unsupported (see target.h). */
if (write)
{
- success = WriteProcessMemory (current_process_handle, (LPVOID) addr,
+ success = WriteProcessMemory (windows_process.handle, (LPVOID) addr,
(LPCVOID) our, len, &done);
if (!success)
lasterror = GetLastError ();
- FlushInstructionCache (current_process_handle, (LPCVOID) addr, len);
+ FlushInstructionCache (windows_process.handle, (LPCVOID) addr, len);
}
else
{
- success = ReadProcessMemory (current_process_handle, (LPCVOID) addr,
+ success = ReadProcessMemory (windows_process.handle, (LPCVOID) addr,
(LPVOID) our, len, &done);
if (!success)
lasterror = GetLastError ();
for_each_thread (delete_thread_info);
}
-/* Zero during the child initialization phase, and nonzero otherwise. */
-
-static int child_initialization_done = 0;
-
static void
do_initial_child_stuff (HANDLE proch, DWORD pid, int attached)
{
struct process_info *proc;
- last_sig = GDB_SIGNAL_0;
+ windows_process.last_sig = GDB_SIGNAL_0;
+ windows_process.handle = proch;
+ windows_process.main_thread_id = 0;
- current_process_handle = proch;
- current_process_id = pid;
- main_thread_id = 0;
+ windows_process.soft_interrupt_requested = 0;
+ windows_process.faked_breakpoint = 0;
+ windows_process.open_process_used = true;
- soft_interrupt_requested = 0;
- faked_breakpoint = 0;
+ memset (&windows_process.current_event, 0,
+ sizeof (windows_process.current_event));
- memset (¤t_event, 0, sizeof (current_event));
+#ifdef __x86_64__
+ BOOL wow64;
+ if (!IsWow64Process (proch, &wow64))
+ {
+ DWORD err = GetLastError ();
+ error ("Check if WOW64 process failed (error %d): %s\n",
+ (int) err, strwinerror (err));
+ }
+ windows_process.wow64_process = wow64;
+
+ if (windows_process.wow64_process
+ && (Wow64GetThreadContext == nullptr
+ || Wow64SetThreadContext == nullptr))
+ error ("WOW64 debugging is not supported on this system.\n");
+
+ windows_process.ignore_first_breakpoint
+ = !attached && windows_process.wow64_process;
+#endif
proc = add_process (pid, attached);
- proc->tdesc = win32_tdesc;
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ proc->tdesc = wow64_win32_tdesc;
+ else
+#endif
+ proc->tdesc = win32_tdesc;
child_init_thread_list ();
- child_initialization_done = 0;
+ windows_process.child_initialization_done = 0;
if (the_low_target.initial_stuff != NULL)
(*the_low_target.initial_stuff) ();
- cached_status.kind = TARGET_WAITKIND_IGNORE;
+ windows_process.cached_status.set_ignore ();
/* Flush all currently pending debug events (thread and dll list) up
to the initial breakpoint. */
{
struct target_waitstatus status;
- the_target->pt->wait (minus_one_ptid, &status, 0);
+ the_target->wait (minus_one_ptid, &status, 0);
/* Note win32_wait doesn't return thread events. */
- if (status.kind != TARGET_WAITKIND_LOADED)
+ if (status.kind () != TARGET_WAITKIND_LOADED)
{
- cached_status = status;
+ windows_process.cached_status = status;
break;
}
resume.kind = resume_continue;
resume.sig = 0;
- the_target->pt->resume (&resume, 1);
+ the_target->resume (&resume, 1);
}
}
-#ifndef _WIN32_WCE
/* Now that the inferior has been started and all DLLs have been mapped,
we can iterate over all DLLs and load them in.
Rather than try to work around this sort of issue, it is much
simpler to just ignore DLL load/unload events during the startup
phase, and then process them all in one batch now. */
- win32_add_all_dlls ();
-#endif
+ windows_process.add_all_dlls ();
- child_initialization_done = 1;
+ windows_process.child_initialization_done = 1;
}
/* Resume all artificially suspended threads if we are continuing
static void
continue_one_thread (thread_info *thread, int thread_id)
{
- win32_thread_info *th = (win32_thread_info *) thread_target_data (thread);
+ windows_thread_info *th = (windows_thread_info *) thread_target_data (thread);
if (thread_id == -1 || thread_id == th->tid)
{
if (th->suspended)
{
- if (th->context.ContextFlags)
+ DWORD *context_flags;
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ context_flags = &th->wow64_context.ContextFlags;
+ else
+#endif
+ context_flags = &th->context.ContextFlags;
+ if (*context_flags)
{
win32_set_thread_context (th);
- th->context.ContextFlags = 0;
+ *context_flags = 0;
}
- if (ResumeThread (th->h) == (DWORD) -1)
- {
- DWORD err = GetLastError ();
- OUTMSG (("warning: ResumeThread failed in continue_one_thread, "
- "(error %d): %s\n", (int) err, strwinerror (err)));
- }
- th->suspended = 0;
+ th->resume ();
}
}
}
static BOOL
child_continue (DWORD continue_status, int thread_id)
{
+ windows_process.desired_stop_thread_id = thread_id;
+ if (windows_process.matching_pending_stop (debug_threads))
+ return TRUE;
+
/* The inferior will only continue after the ContinueDebugEvent
call. */
for_each_thread ([&] (thread_info *thread)
{
continue_one_thread (thread, thread_id);
});
- faked_breakpoint = 0;
+ windows_process.faked_breakpoint = 0;
- if (!ContinueDebugEvent (current_event.dwProcessId,
- current_event.dwThreadId,
- continue_status))
- return FALSE;
-
- return TRUE;
+ return continue_last_debug_event (continue_status, debug_threads);
}
/* Fetch register(s) from the current thread context. */
child_fetch_inferior_registers (struct regcache *regcache, int r)
{
int regno;
- win32_thread_info *th = thread_rec (current_thread_ptid (), TRUE);
+ windows_thread_info *th
+ = windows_process.thread_rec (current_thread_ptid (),
+ INVALIDATE_CONTEXT);
if (r == -1 || r > NUM_REGS)
child_fetch_inferior_registers (regcache, NUM_REGS);
else
child_store_inferior_registers (struct regcache *regcache, int r)
{
int regno;
- win32_thread_info *th = thread_rec (current_thread_ptid (), TRUE);
+ windows_thread_info *th
+ = windows_process.thread_rec (current_thread_ptid (),
+ INVALIDATE_CONTEXT);
if (r == -1 || r == 0 || r > NUM_REGS)
child_store_inferior_registers (regcache, NUM_REGS);
else
(*the_low_target.store_inferior_register) (regcache, th, regno);
}
-/* Map the Windows error number in ERROR to a locale-dependent error
- message string and return a pointer to it. Typically, the values
- for ERROR come from GetLastError.
-
- The string pointed to shall not be modified by the application,
- but may be overwritten by a subsequent call to strwinerror
-
- The strwinerror function does not change the current setting
- of GetLastError. */
-
-char *
-strwinerror (DWORD error)
-{
- static char buf[1024];
- TCHAR *msgbuf;
- DWORD lasterr = GetLastError ();
- DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM
- | FORMAT_MESSAGE_ALLOCATE_BUFFER,
- NULL,
- error,
- 0, /* Default language */
- (LPTSTR) &msgbuf,
- 0,
- NULL);
- if (chars != 0)
- {
- /* If there is an \r\n appended, zap it. */
- if (chars >= 2
- && msgbuf[chars - 2] == '\r'
- && msgbuf[chars - 1] == '\n')
- {
- chars -= 2;
- msgbuf[chars] = 0;
- }
-
- if (chars > ((COUNTOF (buf)) - 1))
- {
- chars = COUNTOF (buf) - 1;
- msgbuf [chars] = 0;
- }
-
-#ifdef UNICODE
- wcstombs (buf, msgbuf, chars + 1);
-#else
- strncpy (buf, msgbuf, chars + 1);
-#endif
- LocalFree (msgbuf);
- }
- else
- sprintf (buf, "unknown win32 error (%u)", (unsigned) error);
-
- SetLastError (lasterr);
- return buf;
-}
-
static BOOL
create_process (const char *program, char *args,
DWORD flags, PROCESS_INFORMATION *pi)
{
- const char *inferior_cwd = get_inferior_cwd ();
+ const std::string &inferior_cwd = get_inferior_cwd ();
BOOL ret;
size_t argslen, proglen;
proglen = strlen (program) + 1;
argslen = strlen (args) + proglen;
-#ifdef _WIN32_WCE
- wchar_t *p, *wprogram, *wargs, *wcwd = NULL;
-
- wprogram = (wchar_t *) alloca (proglen * sizeof (wchar_t));
- mbstowcs (wprogram, program, proglen);
-
- for (p = wprogram; *p; ++p)
- if (L'/' == *p)
- *p = L'\\';
-
- wargs = alloca ((argslen + 1) * sizeof (wchar_t));
- wcscpy (wargs, wprogram);
- wcscat (wargs, L" ");
- mbstowcs (wargs + proglen, args, argslen + 1 - proglen);
-
- if (inferior_cwd != NULL)
- {
- std::string expanded_infcwd = gdb_tilde_expand (inferior_cwd);
- std::replace (expanded_infcwd.begin (), expanded_infcwd.end (),
- '/', '\\');
- wcwd = alloca ((expanded_infcwd.size () + 1) * sizeof (wchar_t));
- if (mbstowcs (wcwd, expanded_infcwd.c_str (),
- expanded_infcwd.size () + 1) == NULL)
- {
- error (_("\
-Could not convert the expanded inferior cwd to wide-char."));
- }
- }
-
- ret = CreateProcessW (wprogram, /* image name */
- wargs, /* command line */
- NULL, /* security, not supported */
- NULL, /* thread, not supported */
- FALSE, /* inherit handles, not supported */
- flags, /* start flags */
- NULL, /* environment, not supported */
- wcwd, /* current directory */
- NULL, /* start info, not supported */
- pi); /* proc info */
-#else
STARTUPINFOA si = { sizeof (STARTUPINFOA) };
char *program_and_args = (char *) alloca (argslen + 1);
strcpy (program_and_args, program);
strcat (program_and_args, " ");
strcat (program_and_args, args);
- ret = CreateProcessA (program, /* image name */
+ ret = create_process (program, /* image name */
program_and_args, /* command line */
- NULL, /* security */
- NULL, /* thread */
- TRUE, /* inherit handles */
flags, /* start flags */
NULL, /* environment */
/* current directory */
- (inferior_cwd == NULL
+ (inferior_cwd.empty ()
? NULL
- : gdb_tilde_expand (inferior_cwd).c_str()),
+ : gdb_tilde_expand (inferior_cwd.c_str ()).c_str()),
+ get_client_state ().disable_randomization,
&si, /* start info */
pi); /* proc info */
-#endif
return ret;
}
DWORD flags;
PROCESS_INFORMATION pi;
DWORD err;
- std::string str_program_args = stringify_argv (program_args);
+ std::string str_program_args = construct_inferior_arguments (program_args);
char *args = (char *) str_program_args.c_str ();
/* win32_wait needs to know we're not attaching. */
- attaching = 0;
+ windows_process.attaching = 0;
if (!program)
error ("No executable specified, specify executable to debug.\n");
OUTMSG2 (("Process created: %s %s\n", program, (char *) args));
}
-#ifndef _WIN32_WCE
- /* On Windows CE this handle can't be closed. The OS reuses
- it in the debug events, while the 9x/NT versions of Windows
- probably use a DuplicateHandle'd one. */
CloseHandle (pi.hThread);
-#endif
do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0);
/* Wait till we are at 1st instruction in program, return new pid
(assuming success). */
- cs.last_ptid = wait (ptid_t (current_process_id), &cs.last_status, 0);
+ cs.last_ptid = wait (ptid_t (pi.dwProcessId), &cs.last_status, 0);
/* Necessary for handle_v_kill. */
- signal_pid = current_process_id;
+ signal_pid = pi.dwProcessId;
- return current_process_id;
+ return pi.dwProcessId;
}
/* Attach to a running process.
win32_process_target::attach (unsigned long pid)
{
HANDLE h;
- winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL;
DWORD err;
-#ifdef _WIN32_WCE
- HMODULE dll = GetModuleHandle (_T("COREDLL.DLL"));
-#else
- HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL"));
-#endif
- DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit);
h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid);
if (h != NULL)
{
if (DebugActiveProcess (pid))
{
- if (DebugSetProcessKillOnExit != NULL)
- DebugSetProcessKillOnExit (FALSE);
+ DebugSetProcessKillOnExit (FALSE);
/* win32_wait needs to know we're attaching. */
- attaching = 1;
+ windows_process.attaching = 1;
do_initial_child_stuff (h, pid, 1);
return 0;
}
(int) err, strwinerror (err));
}
-/* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */
-static void
-handle_output_debug_string (void)
+/* See nat/windows-nat.h. */
+
+int
+gdbserver_windows_process::handle_output_debug_string
+ (struct target_waitstatus *ourstatus)
{
#define READ_BUFFER_LEN 1024
CORE_ADDR addr;
DWORD nbytes = current_event.u.DebugString.nDebugStringLength;
if (nbytes == 0)
- return;
+ return 0;
if (nbytes > READ_BUFFER_LEN)
nbytes = READ_BUFFER_LEN;
in Unicode. */
WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 };
if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0)
- return;
+ return 0;
wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR));
}
else
{
if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0)
- return;
+ return 0;
}
if (!startswith (s, "cYg"))
if (!server_waiting)
{
OUTMSG2(("%s", s));
- return;
+ return 0;
}
monitor_output (s);
}
#undef READ_BUFFER_LEN
+
+ return 0;
}
static void
win32_clear_inferiors (void)
{
- if (current_process_handle != NULL)
- CloseHandle (current_process_handle);
+ if (windows_process.open_process_used)
+ {
+ CloseHandle (windows_process.handle);
+ windows_process.open_process_used = false;
+ }
for_each_thread (delete_thread_info);
- siginfo_er.ExceptionCode = 0;
+ windows_process.siginfo_er.ExceptionCode = 0;
clear_inferiors ();
}
int
win32_process_target::kill (process_info *process)
{
- TerminateProcess (current_process_handle, 0);
+ TerminateProcess (windows_process.handle, 0);
for (;;)
{
if (!child_continue (DBG_CONTINUE, -1))
break;
- if (!WaitForDebugEvent (¤t_event, INFINITE))
+ if (!wait_for_debug_event (&windows_process.current_event, INFINITE))
break;
- if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
+ if (windows_process.current_event.dwDebugEventCode
+ == EXIT_PROCESS_DEBUG_EVENT)
break;
- else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT)
- handle_output_debug_string ();
+ else if (windows_process.current_event.dwDebugEventCode
+ == OUTPUT_DEBUG_STRING_EVENT)
+ windows_process.handle_output_debug_string (nullptr);
}
win32_clear_inferiors ();
int
win32_process_target::detach (process_info *process)
{
- winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL;
- winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL;
-#ifdef _WIN32_WCE
- HMODULE dll = GetModuleHandle (_T("COREDLL.DLL"));
-#else
- HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL"));
-#endif
- DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop);
- DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit);
-
- if (DebugSetProcessKillOnExit == NULL
- || DebugActiveProcessStop == NULL)
- return -1;
+ struct thread_resume resume;
+ resume.thread = minus_one_ptid;
+ resume.kind = resume_continue;
+ resume.sig = 0;
+ this->resume (&resume, 1);
- {
- struct thread_resume resume;
- resume.thread = minus_one_ptid;
- resume.kind = resume_continue;
- resume.sig = 0;
- this->resume (&resume, 1);
- }
-
- if (!DebugActiveProcessStop (current_process_id))
+ if (!DebugActiveProcessStop (process->pid))
return -1;
DebugSetProcessKillOnExit (FALSE);
DWORD tid;
enum gdb_signal sig;
int step;
- win32_thread_info *th;
+ windows_thread_info *th;
DWORD continue_status = DBG_CONTINUE;
ptid_t ptid;
else
/* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make
the Windows resume code do the right thing for thread switching. */
- tid = current_event.dwThreadId;
+ tid = windows_process.current_event.dwThreadId;
if (resume_info[0].thread != minus_one_ptid)
{
if (sig != GDB_SIGNAL_0)
{
- if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
+ if (windows_process.current_event.dwDebugEventCode
+ != EXCEPTION_DEBUG_EVENT)
{
OUTMSG (("Cannot continue with signal %s here.\n",
gdb_signal_to_string (sig)));
}
- else if (sig == last_sig)
+ else if (sig == windows_process.last_sig)
continue_status = DBG_EXCEPTION_NOT_HANDLED;
else
OUTMSG (("Can only continue with received signal %s.\n",
- gdb_signal_to_string (last_sig)));
+ gdb_signal_to_string (windows_process.last_sig)));
}
- last_sig = GDB_SIGNAL_0;
+ windows_process.last_sig = GDB_SIGNAL_0;
/* Get context for the currently selected thread. */
- ptid = debug_event_ptid (¤t_event);
- th = thread_rec (ptid, FALSE);
+ ptid = debug_event_ptid (&windows_process.current_event);
+ th = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT);
if (th)
{
win32_prepare_to_resume (th);
- if (th->context.ContextFlags)
+ DWORD *context_flags;
+#ifdef __x86_64__
+ if (windows_process.wow64_process)
+ context_flags = &th->wow64_context.ContextFlags;
+ else
+#endif
+ context_flags = &th->context.ContextFlags;
+ if (*context_flags)
{
/* Move register values from the inferior into the thread
context structure. */
}
win32_set_thread_context (th);
- th->context.ContextFlags = 0;
+ *context_flags = 0;
}
}
child_continue (continue_status, tid);
}
-static void
-win32_add_one_solib (const char *name, CORE_ADDR load_addr)
+/* See nat/windows-nat.h. */
+
+void
+gdbserver_windows_process::handle_load_dll (const char *name, LPVOID base)
{
+ CORE_ADDR load_addr = (CORE_ADDR) (uintptr_t) base;
+
char buf[MAX_PATH + 1];
char buf2[MAX_PATH + 1];
-#ifdef _WIN32_WCE
- WIN32_FIND_DATA w32_fd;
- WCHAR wname[MAX_PATH + 1];
- mbstowcs (wname, name, MAX_PATH);
- HANDLE h = FindFirstFile (wname, &w32_fd);
-#else
WIN32_FIND_DATAA w32_fd;
HANDLE h = FindFirstFileA (name, &w32_fd);
-#endif
/* The symbols in a dll are offset by 0x1000, which is the
offset from 0 of the first byte in an image - because
{
FindClose (h);
strcpy (buf, name);
-#ifndef _WIN32_WCE
{
char cwd[MAX_PATH + 1];
char *p;
SetCurrentDirectoryA (cwd);
}
}
-#endif
}
-#ifndef _WIN32_WCE
if (strcasecmp (buf, "ntdll.dll") == 0)
{
GetSystemDirectoryA (buf, sizeof (buf));
strcat (buf, "\\ntdll.dll");
}
-#endif
#ifdef __CYGWIN__
cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2));
loaded_dll (buf2, load_addr);
}
-static char *
-get_image_name (HANDLE h, void *address, int unicode)
-{
- static char buf[(2 * MAX_PATH) + 1];
- DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
- char *address_ptr;
- int len = 0;
- char b[2];
- SIZE_T done;
-
- /* Attempt to read the name of the dll that was detected.
- This is documented to work only when actively debugging
- a program. It will not work for attached processes. */
- if (address == NULL)
- return NULL;
-
-#ifdef _WIN32_WCE
- /* Windows CE reports the address of the image name,
- instead of an address of a pointer into the image name. */
- address_ptr = address;
-#else
- /* See if we could read the address of a string, and that the
- address isn't null. */
- if (!ReadProcessMemory (h, address, &address_ptr,
- sizeof (address_ptr), &done)
- || done != sizeof (address_ptr)
- || !address_ptr)
- return NULL;
-#endif
-
- /* Find the length of the string */
- while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
- && (b[0] != 0 || b[size - 1] != 0) && done == size)
- continue;
-
- if (!unicode)
- ReadProcessMemory (h, address_ptr, buf, len, &done);
- else
- {
- WCHAR *unicode_address = XALLOCAVEC (WCHAR, len);
- ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
- &done);
-
- WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
- }
-
- return buf;
-}
-
-typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *,
- DWORD, LPDWORD);
-typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE,
- LPMODULEINFO, DWORD);
-typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE,
- LPSTR, DWORD);
-
-static winapi_EnumProcessModules win32_EnumProcessModules;
-static winapi_GetModuleInformation win32_GetModuleInformation;
-static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA;
-
-static BOOL
-load_psapi (void)
-{
- static int psapi_loaded = 0;
- static HMODULE dll = NULL;
-
- if (!psapi_loaded)
- {
- psapi_loaded = 1;
- dll = LoadLibrary (TEXT("psapi.dll"));
- if (!dll)
- return FALSE;
- win32_EnumProcessModules =
- GETPROCADDRESS (dll, EnumProcessModules);
- win32_GetModuleInformation =
- GETPROCADDRESS (dll, GetModuleInformation);
- win32_GetModuleFileNameExA =
- GETPROCADDRESS (dll, GetModuleFileNameExA);
- }
-
- return (win32_EnumProcessModules != NULL
- && win32_GetModuleInformation != NULL
- && win32_GetModuleFileNameExA != NULL);
-}
-
-#ifndef _WIN32_WCE
-
-/* Iterate over all DLLs currently mapped by our inferior, and
- add them to our list of solibs. */
-
-static void
-win32_add_all_dlls (void)
-{
- size_t i;
- HMODULE dh_buf[1];
- HMODULE *DllHandle = dh_buf;
- DWORD cbNeeded;
- BOOL ok;
-
- if (!load_psapi ())
- return;
-
- cbNeeded = 0;
- ok = (*win32_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
-
- if (!ok || !cbNeeded)
- return;
-
- DllHandle = (HMODULE *) alloca (cbNeeded);
- if (!DllHandle)
- return;
-
- ok = (*win32_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
- if (!ok)
- return;
-
- for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++)
- {
- MODULEINFO mi;
- char dll_name[MAX_PATH];
-
- if (!(*win32_GetModuleInformation) (current_process_handle,
- DllHandle[i],
- &mi,
- sizeof (mi)))
- continue;
- if ((*win32_GetModuleFileNameExA) (current_process_handle,
- DllHandle[i],
- dll_name,
- MAX_PATH) == 0)
- continue;
- win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll);
- }
-}
-#endif
-
-typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD);
-typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32);
-typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32);
-
-/* Handle a DLL load event.
-
- This function assumes that this event did not occur during inferior
- initialization, where their event info may be incomplete (see
- do_initial_child_stuff and win32_add_all_dlls for more info on
- how we handle DLL loading during that phase). */
-
-static void
-handle_load_dll (void)
-{
- LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
- char *dll_name;
-
- dll_name = get_image_name (current_process_handle,
- event->lpImageName, event->fUnicode);
- if (!dll_name)
- return;
-
- win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) event->lpBaseOfDll);
-}
-
-/* Handle a DLL unload event.
-
- This function assumes that this event did not occur during inferior
- initialization, where their event info may be incomplete (see
- do_initial_child_stuff and win32_add_one_solib for more info
- on how we handle DLL loading during that phase). */
+/* See nat/windows-nat.h. */
-static void
-handle_unload_dll (void)
+void
+gdbserver_windows_process::handle_unload_dll ()
{
CORE_ADDR load_addr =
(CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll;
unloaded_dll (NULL, load_addr);
}
-static void
-handle_exception (struct target_waitstatus *ourstatus)
-{
- DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
-
- memcpy (&siginfo_er, ¤t_event.u.Exception.ExceptionRecord,
- sizeof siginfo_er);
-
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
-
- switch (code)
- {
- case EXCEPTION_ACCESS_VIOLATION:
- OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION"));
- ourstatus->value.sig = GDB_SIGNAL_SEGV;
- break;
- case STATUS_STACK_OVERFLOW:
- OUTMSG2 (("STATUS_STACK_OVERFLOW"));
- ourstatus->value.sig = GDB_SIGNAL_SEGV;
- break;
- case STATUS_FLOAT_DENORMAL_OPERAND:
- OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
- OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_INEXACT_RESULT:
- OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_INVALID_OPERATION:
- OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_OVERFLOW:
- OUTMSG2 (("STATUS_FLOAT_OVERFLOW"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_STACK_CHECK:
- OUTMSG2 (("STATUS_FLOAT_STACK_CHECK"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_UNDERFLOW:
- OUTMSG2 (("STATUS_FLOAT_UNDERFLOW"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_FLOAT_DIVIDE_BY_ZERO:
- OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_INTEGER_DIVIDE_BY_ZERO:
- OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case STATUS_INTEGER_OVERFLOW:
- OUTMSG2 (("STATUS_INTEGER_OVERFLOW"));
- ourstatus->value.sig = GDB_SIGNAL_FPE;
- break;
- case EXCEPTION_BREAKPOINT:
- OUTMSG2 (("EXCEPTION_BREAKPOINT"));
- ourstatus->value.sig = GDB_SIGNAL_TRAP;
-#ifdef _WIN32_WCE
- /* Remove the initial breakpoint. */
- check_breakpoints ((CORE_ADDR) (long) current_event
- .u.Exception.ExceptionRecord.ExceptionAddress);
-#endif
- break;
- case DBG_CONTROL_C:
- OUTMSG2 (("DBG_CONTROL_C"));
- ourstatus->value.sig = GDB_SIGNAL_INT;
- break;
- case DBG_CONTROL_BREAK:
- OUTMSG2 (("DBG_CONTROL_BREAK"));
- ourstatus->value.sig = GDB_SIGNAL_INT;
- break;
- case EXCEPTION_SINGLE_STEP:
- OUTMSG2 (("EXCEPTION_SINGLE_STEP"));
- ourstatus->value.sig = GDB_SIGNAL_TRAP;
- break;
- case EXCEPTION_ILLEGAL_INSTRUCTION:
- OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION"));
- ourstatus->value.sig = GDB_SIGNAL_ILL;
- break;
- case EXCEPTION_PRIV_INSTRUCTION:
- OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION"));
- ourstatus->value.sig = GDB_SIGNAL_ILL;
- break;
- case EXCEPTION_NONCONTINUABLE_EXCEPTION:
- OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION"));
- ourstatus->value.sig = GDB_SIGNAL_ILL;
- break;
- default:
- if (current_event.u.Exception.dwFirstChance)
- {
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- return;
- }
- OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s",
- (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
- phex_nz ((uintptr_t) current_event.u.Exception.ExceptionRecord.
- ExceptionAddress, sizeof (uintptr_t))));
- ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
- break;
- }
- OUTMSG2 (("\n"));
- last_sig = ourstatus->value.sig;
-}
-
-
static void
suspend_one_thread (thread_info *thread)
{
- win32_thread_info *th = (win32_thread_info *) thread_target_data (thread);
+ windows_thread_info *th = (windows_thread_info *) thread_target_data (thread);
- if (!th->suspended)
- {
- if (SuspendThread (th->h) == (DWORD) -1)
- {
- DWORD err = GetLastError ();
- OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
- "(error %d): %s\n", (int) err, strwinerror (err)));
- }
- else
- th->suspended = 1;
- }
+ th->suspend ();
}
static void
{
OUTMSG2(("fake_breakpoint_event\n"));
- faked_breakpoint = 1;
+ windows_process.faked_breakpoint = 1;
- memset (¤t_event, 0, sizeof (current_event));
- current_event.dwThreadId = main_thread_id;
- current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT;
- current_event.u.Exception.ExceptionRecord.ExceptionCode
+ memset (&windows_process.current_event, 0,
+ sizeof (windows_process.current_event));
+ windows_process.current_event.dwThreadId = windows_process.main_thread_id;
+ windows_process.current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT;
+ windows_process.current_event.u.Exception.ExceptionRecord.ExceptionCode
= EXCEPTION_BREAKPOINT;
for_each_thread (suspend_one_thread);
}
-#ifdef _WIN32_WCE
-static int
-auto_delete_breakpoint (CORE_ADDR stop_pc)
+/* See nat/windows-nat.h. */
+
+bool
+gdbserver_windows_process::handle_access_violation
+ (const EXCEPTION_RECORD *rec)
{
- return 1;
+ return false;
+}
+
+/* A helper function that will, if needed, set
+ 'stopped_at_software_breakpoint' on the thread and adjust the
+ PC. */
+
+static void
+maybe_adjust_pc ()
+{
+ struct regcache *regcache = get_thread_regcache (current_thread, 1);
+ child_fetch_inferior_registers (regcache, -1);
+
+ windows_thread_info *th
+ = windows_process.thread_rec (current_thread_ptid (),
+ DONT_INVALIDATE_CONTEXT);
+ th->stopped_at_software_breakpoint = false;
+
+ if (windows_process.current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT
+ && ((windows_process.current_event.u.Exception.ExceptionRecord.ExceptionCode
+ == EXCEPTION_BREAKPOINT)
+ || (windows_process.current_event.u.Exception.ExceptionRecord.ExceptionCode
+ == STATUS_WX86_BREAKPOINT))
+ && windows_process.child_initialization_done)
+ {
+ th->stopped_at_software_breakpoint = true;
+ CORE_ADDR pc = regcache_read_pc (regcache);
+ CORE_ADDR sw_breakpoint_pc = pc - the_low_target.decr_pc_after_break;
+ regcache_write_pc (regcache, sw_breakpoint_pc);
+ }
}
-#endif
/* Get the next event from the child. */
static int
-get_child_debug_event (struct target_waitstatus *ourstatus)
+get_child_debug_event (DWORD *continue_status,
+ struct target_waitstatus *ourstatus)
{
ptid_t ptid;
- last_sig = GDB_SIGNAL_0;
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ windows_process.last_sig = GDB_SIGNAL_0;
+ ourstatus->set_spurious ();
+ *continue_status = DBG_CONTINUE;
/* Check if GDB sent us an interrupt request. */
check_remote_input_interrupt_request ();
- if (soft_interrupt_requested)
+ DEBUG_EVENT *current_event = &windows_process.current_event;
+
+ if (windows_process.soft_interrupt_requested)
{
- soft_interrupt_requested = 0;
+ windows_process.soft_interrupt_requested = 0;
fake_breakpoint_event ();
goto gotevent;
}
-#ifndef _WIN32_WCE
- attaching = 0;
-#else
- if (attaching)
- {
- /* WinCE doesn't set an initial breakpoint automatically. To
- stop the inferior, we flush all currently pending debug
- events -- the thread list and the dll list are always
- reported immediatelly without delay, then, we suspend all
- threads and pretend we saw a trap at the current PC of the
- main thread.
-
- Contrary to desktop Windows, Windows CE *does* report the dll
- names on LOAD_DLL_DEBUG_EVENTs resulting from a
- DebugActiveProcess call. This limits the way we can detect
- if all the dlls have already been reported. If we get a real
- debug event before leaving attaching, the worst that will
- happen is the user will see a spurious breakpoint. */
-
- current_event.dwDebugEventCode = 0;
- if (!WaitForDebugEvent (¤t_event, 0))
- {
- OUTMSG2(("no attach events left\n"));
- fake_breakpoint_event ();
- attaching = 0;
- }
- else
- OUTMSG2(("got attach event\n"));
- }
- else
-#endif
- {
- /* Keep the wait time low enough for comfortable remote
- interruption, but high enough so gdbserver doesn't become a
- bottleneck. */
- if (!WaitForDebugEvent (¤t_event, 250))
- {
- DWORD e = GetLastError();
-
- if (e == ERROR_PIPE_NOT_CONNECTED)
- {
- /* This will happen if the loader fails to succesfully
- load the application, e.g., if the main executable
- tries to pull in a non-existing export from a
- DLL. */
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = 1;
- return 1;
- }
+ windows_process.attaching = 0;
+ {
+ gdb::optional<pending_stop> stop
+ = windows_process.fetch_pending_stop (debug_threads);
+ if (stop.has_value ())
+ {
+ *ourstatus = stop->status;
+ windows_process.current_event = stop->event;
+ ptid = debug_event_ptid (&windows_process.current_event);
+ switch_to_thread (find_thread_ptid (ptid));
+ return 1;
+ }
- return 0;
- }
- }
+ /* Keep the wait time low enough for comfortable remote
+ interruption, but high enough so gdbserver doesn't become a
+ bottleneck. */
+ if (!wait_for_debug_event (&windows_process.current_event, 250))
+ {
+ DWORD e = GetLastError();
+
+ if (e == ERROR_PIPE_NOT_CONNECTED)
+ {
+ /* This will happen if the loader fails to succesfully
+ load the application, e.g., if the main executable
+ tries to pull in a non-existing export from a
+ DLL. */
+ ourstatus->set_exited (1);
+ return 1;
+ }
+
+ return 0;
+ }
+ }
gotevent:
- switch (current_event.dwDebugEventCode)
+ switch (current_event->dwDebugEventCode)
{
case CREATE_THREAD_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT "
"for pid=%u tid=%x)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
/* Record the existence of this thread. */
- child_add_thread (current_event.dwProcessId,
- current_event.dwThreadId,
- current_event.u.CreateThread.hThread,
- current_event.u.CreateThread.lpThreadLocalBase);
+ child_add_thread (current_event->dwProcessId,
+ current_event->dwThreadId,
+ current_event->u.CreateThread.hThread,
+ current_event->u.CreateThread.lpThreadLocalBase);
break;
case EXIT_THREAD_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- child_delete_thread (current_event.dwProcessId,
- current_event.dwThreadId);
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ child_delete_thread (current_event->dwProcessId,
+ current_event->dwThreadId);
- current_thread = get_first_thread ();
+ switch_to_thread (get_first_thread ());
return 1;
case CREATE_PROCESS_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- CloseHandle (current_event.u.CreateProcessInfo.hFile);
-
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
- main_thread_id = current_event.dwThreadId;
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ CloseHandle (current_event->u.CreateProcessInfo.hFile);
- /* Add the main thread. */
- child_add_thread (current_event.dwProcessId,
- main_thread_id,
- current_event.u.CreateProcessInfo.hThread,
- current_event.u.CreateProcessInfo.lpThreadLocalBase);
-
-#ifdef _WIN32_WCE
- if (!attaching)
+ if (windows_process.open_process_used)
{
- /* Windows CE doesn't set the initial breakpoint
- automatically like the desktop versions of Windows do.
- We add it explicitly here. It will be removed as soon as
- it is hit. */
- set_breakpoint_at ((CORE_ADDR) (long) current_event.u
- .CreateProcessInfo.lpStartAddress,
- auto_delete_breakpoint);
+ CloseHandle (windows_process.handle);
+ windows_process.open_process_used = false;
}
-#endif
+
+ windows_process.handle = current_event->u.CreateProcessInfo.hProcess;
+ windows_process.main_thread_id = current_event->dwThreadId;
+
+ /* Add the main thread. */
+ child_add_thread (current_event->dwProcessId,
+ windows_process.main_thread_id,
+ current_event->u.CreateProcessInfo.hThread,
+ current_event->u.CreateProcessInfo.lpThreadLocalBase);
break;
case EXIT_PROCESS_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
{
- DWORD exit_status = current_event.u.ExitProcess.dwExitCode;
+ DWORD exit_status = current_event->u.ExitProcess.dwExitCode;
/* If the exit status looks like a fatal exception, but we
don't recognize the exception's code, make the original
exit status value available, to avoid losing information. */
int exit_signal
= WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1;
if (exit_signal == -1)
- {
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = exit_status;
- }
+ ourstatus->set_exited (exit_status);
else
- {
- ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
- ourstatus->value.sig = gdb_signal_from_host (exit_signal);
- }
+ ourstatus->set_signalled (gdb_signal_from_host (exit_signal));
}
- child_continue (DBG_CONTINUE, -1);
- CloseHandle (current_process_handle);
- current_process_handle = NULL;
+ child_continue (DBG_CONTINUE, windows_process.desired_stop_thread_id);
break;
case LOAD_DLL_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- CloseHandle (current_event.u.LoadDll.hFile);
- if (! child_initialization_done)
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ CloseHandle (current_event->u.LoadDll.hFile);
+ if (! windows_process.child_initialization_done)
break;
- handle_load_dll ();
+ windows_process.dll_loaded_event ();
- ourstatus->kind = TARGET_WAITKIND_LOADED;
- ourstatus->value.sig = GDB_SIGNAL_TRAP;
+ ourstatus->set_loaded ();
break;
case UNLOAD_DLL_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- if (! child_initialization_done)
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ if (! windows_process.child_initialization_done)
break;
- handle_unload_dll ();
- ourstatus->kind = TARGET_WAITKIND_LOADED;
- ourstatus->value.sig = GDB_SIGNAL_TRAP;
+ windows_process.handle_unload_dll ();
+ ourstatus->set_loaded ();
break;
case EXCEPTION_DEBUG_EVENT:
OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- handle_exception (ourstatus);
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ if (windows_process.handle_exception (ourstatus, debug_threads)
+ == HANDLE_EXCEPTION_UNHANDLED)
+ *continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case OUTPUT_DEBUG_STRING_EVENT:
/* A message from the kernel (or Cygwin). */
OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT "
"for pid=%u tid=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId));
- handle_output_debug_string ();
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId));
+ windows_process.handle_output_debug_string (nullptr);
break;
default:
OUTMSG2 (("gdbserver: kernel event unknown "
"for pid=%u tid=%x code=%x\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- (unsigned) current_event.dwDebugEventCode));
+ (unsigned) current_event->dwProcessId,
+ (unsigned) current_event->dwThreadId,
+ (unsigned) current_event->dwDebugEventCode));
break;
}
- ptid = debug_event_ptid (¤t_event);
- current_thread = find_thread_ptid (ptid);
+ ptid = debug_event_ptid (&windows_process.current_event);
+
+ if (windows_process.desired_stop_thread_id != -1
+ && windows_process.desired_stop_thread_id != ptid.lwp ())
+ {
+ /* Pending stop. See the comment by the definition of
+ "pending_stops" for details on why this is needed. */
+ OUTMSG2 (("get_windows_debug_event - "
+ "unexpected stop in 0x%lx (expecting 0x%x)\n",
+ ptid.lwp (), windows_process.desired_stop_thread_id));
+ maybe_adjust_pc ();
+ windows_process.pending_stops.push_back
+ ({(DWORD) ptid.lwp (), *ourstatus, *current_event});
+ ourstatus->set_spurious ();
+ }
+ else
+ switch_to_thread (find_thread_ptid (ptid));
+
return 1;
}
Returns the signal which caused the process to stop. */
ptid_t
win32_process_target::wait (ptid_t ptid, target_waitstatus *ourstatus,
- int options)
+ target_wait_flags options)
{
- struct regcache *regcache;
-
- if (cached_status.kind != TARGET_WAITKIND_IGNORE)
+ if (windows_process.cached_status.kind () != TARGET_WAITKIND_IGNORE)
{
/* The core always does a wait after creating the inferior, and
do_initial_child_stuff already ran the inferior to the
initial breakpoint (or an exit, if creating the process
fails). Report it now. */
- *ourstatus = cached_status;
- cached_status.kind = TARGET_WAITKIND_IGNORE;
- return debug_event_ptid (¤t_event);
+ *ourstatus = windows_process.cached_status;
+ windows_process.cached_status.set_ignore ();
+ return debug_event_ptid (&windows_process.current_event);
}
while (1)
{
- if (!get_child_debug_event (ourstatus))
+ DWORD continue_status;
+ if (!get_child_debug_event (&continue_status, ourstatus))
continue;
- switch (ourstatus->kind)
+ switch (ourstatus->kind ())
{
case TARGET_WAITKIND_EXITED:
OUTMSG2 (("Child exited with retcode = %x\n",
- ourstatus->value.integer));
+ ourstatus->exit_status ()));
win32_clear_inferiors ();
- return ptid_t (current_event.dwProcessId);
+ return ptid_t (windows_process.current_event.dwProcessId);
case TARGET_WAITKIND_STOPPED:
case TARGET_WAITKIND_SIGNALLED:
case TARGET_WAITKIND_LOADED:
- OUTMSG2 (("Child Stopped with signal = %d \n",
- ourstatus->value.sig));
-
- regcache = get_thread_regcache (current_thread, 1);
- child_fetch_inferior_registers (regcache, -1);
- return debug_event_ptid (¤t_event);
+ {
+ OUTMSG2 (("Child Stopped with signal = %d \n",
+ ourstatus->sig ()));
+ maybe_adjust_pc ();
+ return debug_event_ptid (&windows_process.current_event);
+ }
default:
- OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind));
+ OUTMSG (("Ignoring unknown internal event, %d\n",
+ ourstatus->kind ()));
/* fall-through */
case TARGET_WAITKIND_SPURIOUS:
/* do nothing, just continue */
- child_continue (DBG_CONTINUE, -1);
+ child_continue (continue_status,
+ windows_process.desired_stop_thread_id);
break;
}
}
void
win32_process_target::request_interrupt ()
{
- winapi_DebugBreakProcess DebugBreakProcess;
- winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent;
-
-#ifdef _WIN32_WCE
- HMODULE dll = GetModuleHandle (_T("COREDLL.DLL"));
-#else
- HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL"));
-#endif
-
- GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent);
-
- if (GenerateConsoleCtrlEvent != NULL
- && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id))
+ if (GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, signal_pid))
return;
/* GenerateConsoleCtrlEvent can fail if process id being debugged is
Fallback to XP/Vista 'DebugBreakProcess', which generates a
breakpoint exception in the interior process. */
- DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess);
-
- if (DebugBreakProcess != NULL
- && DebugBreakProcess (current_process_handle))
+ if (DebugBreakProcess (windows_process.handle))
return;
/* Last resort, suspend all threads manually. */
- soft_interrupt_requested = 1;
+ windows_process.soft_interrupt_requested = 1;
}
bool
return true;
}
-#ifdef _WIN32_WCE
-int
-win32_error_to_fileio_error (DWORD err)
-{
- switch (err)
- {
- case ERROR_BAD_PATHNAME:
- case ERROR_FILE_NOT_FOUND:
- case ERROR_INVALID_NAME:
- case ERROR_PATH_NOT_FOUND:
- return FILEIO_ENOENT;
- case ERROR_CRC:
- case ERROR_IO_DEVICE:
- case ERROR_OPEN_FAILED:
- return FILEIO_EIO;
- case ERROR_INVALID_HANDLE:
- return FILEIO_EBADF;
- case ERROR_ACCESS_DENIED:
- case ERROR_SHARING_VIOLATION:
- return FILEIO_EACCES;
- case ERROR_NOACCESS:
- return FILEIO_EFAULT;
- case ERROR_BUSY:
- return FILEIO_EBUSY;
- case ERROR_ALREADY_EXISTS:
- case ERROR_FILE_EXISTS:
- return FILEIO_EEXIST;
- case ERROR_BAD_DEVICE:
- return FILEIO_ENODEV;
- case ERROR_DIRECTORY:
- return FILEIO_ENOTDIR;
- case ERROR_FILENAME_EXCED_RANGE:
- case ERROR_INVALID_DATA:
- case ERROR_INVALID_PARAMETER:
- case ERROR_NEGATIVE_SEEK:
- return FILEIO_EINVAL;
- case ERROR_TOO_MANY_OPEN_FILES:
- return FILEIO_EMFILE;
- case ERROR_HANDLE_DISK_FULL:
- case ERROR_DISK_FULL:
- return FILEIO_ENOSPC;
- case ERROR_WRITE_PROTECT:
- return FILEIO_EROFS;
- case ERROR_NOT_SUPPORTED:
- return FILEIO_ENOSYS;
- }
-
- return FILEIO_EUNKNOWN;
-}
-
-void
-win32_process_target::hostio_last_error (char *buf)
-{
- DWORD winerr = GetLastError ();
- int fileio_err = win32_error_to_fileio_error (winerr);
- sprintf (buf, "F-1,%x", fileio_err);
-}
-#endif
-
bool
win32_process_target::supports_qxfer_siginfo ()
{
unsigned const char *writebuf,
CORE_ADDR offset, int len)
{
- if (siginfo_er.ExceptionCode == 0)
+ if (windows_process.siginfo_er.ExceptionCode == 0)
return -1;
if (readbuf == nullptr)
return -1;
- if (offset > sizeof (siginfo_er))
+ char *buf = (char *) &windows_process.siginfo_er;
+ size_t bufsize = sizeof (windows_process.siginfo_er);
+
+#ifdef __x86_64__
+ EXCEPTION_RECORD32 er32;
+ if (windows_process.wow64_process)
+ {
+ buf = (char *) &er32;
+ bufsize = sizeof (er32);
+
+ er32.ExceptionCode = windows_process.siginfo_er.ExceptionCode;
+ er32.ExceptionFlags = windows_process.siginfo_er.ExceptionFlags;
+ er32.ExceptionRecord
+ = (uintptr_t) windows_process.siginfo_er.ExceptionRecord;
+ er32.ExceptionAddress
+ = (uintptr_t) windows_process.siginfo_er.ExceptionAddress;
+ er32.NumberParameters = windows_process.siginfo_er.NumberParameters;
+ int i;
+ for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++)
+ er32.ExceptionInformation[i]
+ = windows_process.siginfo_er.ExceptionInformation[i];
+ }
+#endif
+
+ if (offset > bufsize)
return -1;
- if (offset + len > sizeof (siginfo_er))
- len = sizeof (siginfo_er) - offset;
+ if (offset + len > bufsize)
+ len = bufsize - offset;
- memcpy (readbuf, (char *) &siginfo_er + offset, len);
+ memcpy (readbuf, buf + offset, len);
return len;
}
int
win32_process_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr)
{
- win32_thread_info *th;
- th = thread_rec (ptid, 0);
+ windows_thread_info *th;
+ th = windows_process.thread_rec (ptid, DONT_INVALIDATE_CONTEXT);
if (th == NULL)
return 0;
if (addr != NULL)
/* Implementation of the target_ops method "sw_breakpoint_from_kind". */
-static const gdb_byte *
-win32_sw_breakpoint_from_kind (int kind, int *size)
+const gdb_byte *
+win32_process_target::sw_breakpoint_from_kind (int kind, int *size)
{
*size = the_low_target.breakpoint_len;
return the_low_target.breakpoint;
}
+bool
+win32_process_target::stopped_by_sw_breakpoint ()
+{
+ windows_thread_info *th
+ = windows_process.thread_rec (current_thread_ptid (),
+ DONT_INVALIDATE_CONTEXT);
+ return th == nullptr ? false : th->stopped_at_software_breakpoint;
+}
+
+bool
+win32_process_target::supports_stopped_by_sw_breakpoint ()
+{
+ return true;
+}
+
+CORE_ADDR
+win32_process_target::read_pc (struct regcache *regcache)
+{
+ return (*the_low_target.get_pc) (regcache);
+}
+
+void
+win32_process_target::write_pc (struct regcache *regcache, CORE_ADDR pc)
+{
+ return (*the_low_target.set_pc) (regcache, pc);
+}
+
+const char *
+win32_process_target::thread_name (ptid_t thread)
+{
+ windows_thread_info *th
+ = windows_process.thread_rec (current_thread_ptid (),
+ DONT_INVALIDATE_CONTEXT);
+ return th->thread_name ();
+}
+
+const char *
+win32_process_target::pid_to_exec_file (int pid)
+{
+ return windows_process.pid_to_exec_file (pid);
+}
+
/* The win32 target ops object. */
static win32_process_target the_win32_target;
-static process_stratum_target win32_target_ops = {
- NULL, /* emit_ops */
- NULL, /* supports_disable_randomization */
- NULL, /* qxfer_libraries_svr4 */
- NULL, /* support_agent */
- NULL, /* enable_btrace */
- NULL, /* disable_btrace */
- NULL, /* read_btrace */
- NULL, /* read_btrace_conf */
- NULL, /* supports_range_stepping */
- NULL, /* pid_to_exec_file */
- NULL, /* multifs_open */
- NULL, /* multifs_unlink */
- NULL, /* multifs_readlink */
- NULL, /* breakpoint_kind_from_pc */
- win32_sw_breakpoint_from_kind,
- NULL, /* thread_name */
- NULL, /* breakpoint_kind_from_current_state */
- NULL, /* supports_software_single_step */
- NULL, /* supports_catch_syscall */
- NULL, /* get_ipa_tdesc_idx */
- NULL, /* thread_handle */
- &the_win32_target,
-};
-
/* Initialize the Win32 backend. */
void
initialize_low (void)
{
- set_target_ops (&win32_target_ops);
+ set_target_ops (&the_win32_target);
the_low_target.arch_setup ();
+
+ initialize_loadable ();
}
projects / thirdparty / binutils-gdb.git / blobdiff