win32_require_context (th);
+#ifdef __x86_64__
+#define RET_DR(DR) \
+ case DR: \
+ return th->wow64_context.Dr ## DR
+
+ if (wow64_process)
+ {
+ switch (dr)
+ {
+ RET_DR (0);
+ RET_DR (1);
+ RET_DR (2);
+ RET_DR (3);
+ RET_DR (6);
+ RET_DR (7);
+ }
+ }
+ else
+#undef RET_DR
+#endif
#define RET_DR(DR) \
case DR: \
return th->context.Dr ## DR
- switch (dr)
{
- RET_DR (0);
- RET_DR (1);
- RET_DR (2);
- RET_DR (3);
- RET_DR (6);
- RET_DR (7);
+ switch (dr)
+ {
+ RET_DR (0);
+ RET_DR (1);
+ RET_DR (2);
+ RET_DR (3);
+ RET_DR (6);
+ RET_DR (7);
+ }
}
#undef RET_DR
static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
again:
- th->context.ContextFlags = (CONTEXT_FULL
- | CONTEXT_FLOATING_POINT
- | CONTEXT_DEBUG_REGISTERS
- | extended_registers);
+#ifdef __x86_64__
+ if (wow64_process)
+ th->wow64_context.ContextFlags = (CONTEXT_FULL
+ | CONTEXT_FLOATING_POINT
+ | CONTEXT_DEBUG_REGISTERS
+ | extended_registers);
+ else
+#endif
+ th->context.ContextFlags = (CONTEXT_FULL
+ | CONTEXT_FLOATING_POINT
+ | CONTEXT_DEBUG_REGISTERS
+ | extended_registers);
- if (!GetThreadContext (th->h, &th->context))
+ BOOL ret;
+#ifdef __x86_64__
+ if (wow64_process)
+ ret = win32_Wow64GetThreadContext (th->h, &th->wow64_context);
+ else
+#endif
+ ret = GetThreadContext (th->h, &th->context);
+ if (!ret)
{
DWORD e = GetLastError ();
win32_require_context (th);
- th->context.Dr0 = dr->dr_mirror[0];
- th->context.Dr1 = dr->dr_mirror[1];
- th->context.Dr2 = dr->dr_mirror[2];
- th->context.Dr3 = dr->dr_mirror[3];
- /* th->context.Dr6 = dr->dr_status_mirror;
- FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr->dr_control_mirror;
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ th->wow64_context.Dr0 = dr->dr_mirror[0];
+ th->wow64_context.Dr1 = dr->dr_mirror[1];
+ th->wow64_context.Dr2 = dr->dr_mirror[2];
+ th->wow64_context.Dr3 = dr->dr_mirror[3];
+ /* th->wow64_context.Dr6 = dr->dr_status_mirror;
+ FIXME: should we set dr6 also ?? */
+ th->wow64_context.Dr7 = dr->dr_control_mirror;
+ }
+ else
+#endif
+ {
+ th->context.Dr0 = dr->dr_mirror[0];
+ th->context.Dr1 = dr->dr_mirror[1];
+ th->context.Dr2 = dr->dr_mirror[2];
+ th->context.Dr3 = dr->dr_mirror[3];
+ /* th->context.Dr6 = dr->dr_status_mirror;
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr->dr_control_mirror;
+ }
th->debug_registers_changed = false;
}
static void
i386_single_step (windows_thread_info *th)
{
- th->context.EFlags |= FLAG_TRACE_BIT;
+#ifdef __x86_64__
+ if (wow64_process)
+ th->wow64_context.EFlags |= FLAG_TRACE_BIT;
+ else
+#endif
+ th->context.EFlags |= FLAG_TRACE_BIT;
}
-#ifndef __x86_64__
-
/* An array of offset mappings into a Win32 Context structure.
This is a one-to-one mapping which is indexed by gdb's register
numbers. It retrieves an offset into the context structure where
An offset value of -1 indicates that Win32 does not provide this
register in it's CONTEXT structure. In this case regptr will return
a pointer into a dummy register. */
+#ifdef __x86_64__
+#define context_offset(x) (offsetof (WOW64_CONTEXT, x))
+#else
#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
-static const int mappings[] = {
+#endif
+static const int i386_mappings[] = {
context_offset (Eax),
context_offset (Ecx),
context_offset (Edx),
};
#undef context_offset
-#else /* __x86_64__ */
+#ifdef __x86_64__
#define context_offset(x) (offsetof (CONTEXT, x))
-static const int mappings[] =
+static const int amd64_mappings[] =
{
context_offset (Rax),
context_offset (Rbx),
i386_fetch_inferior_register (struct regcache *regcache,
windows_thread_info *th, int r)
{
- char *context_offset = (char *) &th->context + mappings[r];
+ const int *mappings;
+#ifdef __x86_64__
+ if (!wow64_process)
+ mappings = amd64_mappings;
+ else
+#endif
+ mappings = i386_mappings;
+
+ char *context_offset;
+#ifdef __x86_64__
+ if (wow64_process)
+ context_offset = (char *) &th->wow64_context + mappings[r];
+ else
+#endif
+ context_offset = (char *) &th->context + mappings[r];
long l;
if (r == FCS_REGNUM)
i386_store_inferior_register (struct regcache *regcache,
windows_thread_info *th, int r)
{
- char *context_offset = (char *) &th->context + mappings[r];
+ const int *mappings;
+#ifdef __x86_64__
+ if (!wow64_process)
+ mappings = amd64_mappings;
+ else
+#endif
+ mappings = i386_mappings;
+
+ char *context_offset;
+#ifdef __x86_64__
+ if (wow64_process)
+ context_offset = (char *) &th->wow64_context + mappings[r];
+ else
+#endif
+ context_offset = (char *) &th->context + mappings[r];
+
collect_register (regcache, r, context_offset);
}
#ifdef __x86_64__
tdesc = amd64_create_target_description (X86_XSTATE_SSE_MASK, false,
false, false);
- const char **expedite_regs = amd64_expedite_regs;
-#else
+ init_target_desc (tdesc, amd64_expedite_regs);
+ win32_tdesc = tdesc;
+#endif
+
tdesc = i386_create_target_description (X86_XSTATE_SSE_MASK, false, false);
- const char **expedite_regs = i386_expedite_regs;
+ init_target_desc (tdesc, i386_expedite_regs);
+#ifdef __x86_64__
+ wow64_win32_tdesc = tdesc;
+#else
+ win32_tdesc = tdesc;
#endif
+}
- init_target_desc (tdesc, expedite_regs);
+/* Implement win32_target_ops "num_regs" method. */
- win32_tdesc = tdesc;
+static int
+i386_win32_num_regs (void)
+{
+ int num_regs;
+#ifdef __x86_64__
+ if (!wow64_process)
+ num_regs = sizeof (amd64_mappings) / sizeof (amd64_mappings[0]);
+ else
+#endif
+ num_regs = sizeof (i386_mappings) / sizeof (i386_mappings[0]);
+ return num_regs;
}
/* Implement win32_target_ops "get_pc" method. */
struct win32_target_ops the_low_target = {
i386_arch_setup,
- sizeof (mappings) / sizeof (mappings[0]),
+ i386_win32_num_regs,
i386_initial_stuff,
i386_get_thread_context,
i386_prepare_to_resume,
by suspending all the threads. */
static int faked_breakpoint = 0;
+#ifdef __x86_64__
+bool wow64_process = false;
+#endif
+
const struct target_desc *win32_tdesc;
+#ifdef __x86_64__
+const struct target_desc *wow64_win32_tdesc;
+#endif
-#define NUM_REGS (the_low_target.num_regs)
+#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);
+#ifdef __x86_64__
+typedef BOOL (WINAPI *winapi_Wow64SetThreadContext) (HANDLE,
+ const WOW64_CONTEXT *);
+
+winapi_Wow64GetThreadContext win32_Wow64GetThreadContext;
+static winapi_Wow64SetThreadContext win32_Wow64SetThreadContext;
+#endif
+
#ifndef _WIN32_WCE
static void win32_add_all_dlls (void);
#endif
static void
win32_get_thread_context (windows_thread_info *th)
{
- memset (&th->context, 0, sizeof (CONTEXT));
+#ifdef __x86_64__
+ if (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);
#ifdef _WIN32_WCE
memcpy (&th->base_context, &th->context, sizeof (CONTEXT));
it between stopping and resuming. */
if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0)
#endif
- SetThreadContext (th->h, &th->context);
+ {
+#ifdef __x86_64__
+ if (wow64_process)
+ win32_Wow64SetThreadContext (th->h, &th->wow64_context);
+ else
+#endif
+ SetThreadContext (th->h, &th->context);
+ }
}
/* Set the thread context of the thread associated with TH. */
void
win32_require_context (windows_thread_info *th)
{
- if (th->context.ContextFlags == 0)
+ DWORD context_flags;
+#ifdef __x86_64__
+ if (wow64_process)
+ context_flags = th->wow64_context.ContextFlags;
+ else
+#endif
+ context_flags = th->context.ContextFlags;
+ if (context_flags == 0)
{
th->suspend ();
win32_get_thread_context (th);
if ((th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT)))
return th;
- th = new windows_thread_info (tid, h, (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 (wow64_process)
+ base += 2 * 4096; /* page size = 4096 */
+#endif
+ th = new windows_thread_info (tid, h, base);
add_thread (ptid, th);
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));
+ }
+ wow64_process = wow64;
+
+ if (wow64_process
+ && (win32_Wow64GetThreadContext == nullptr
+ || win32_Wow64SetThreadContext == nullptr))
+ error ("WOW64 debugging is not supported on this system.\n");
+
+ ignore_first_breakpoint = !attached && wow64_process;
+#endif
+
proc = add_process (pid, attached);
- proc->tdesc = win32_tdesc;
+#ifdef __x86_64__
+ if (wow64_process)
+ proc->tdesc = wow64_win32_tdesc;
+ else
+#endif
+ proc->tdesc = win32_tdesc;
child_init_thread_list ();
child_initialization_done = 0;
if (th->suspended)
{
- if (th->context.ContextFlags)
+ DWORD *context_flags;
+#ifdef __x86_64__
+ if (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;
}
th->resume ();
{
win32_prepare_to_resume (th);
- if (th->context.ContextFlags)
+ DWORD *context_flags;
+#ifdef __x86_64__
+ if (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;
}
}
typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *,
DWORD, LPDWORD);
+#ifdef __x86_64__
+typedef BOOL (WINAPI *winapi_EnumProcessModulesEx) (HANDLE, HMODULE *, DWORD,
+ LPDWORD, DWORD);
+#endif
typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE,
LPMODULEINFO, DWORD);
typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE,
LPSTR, DWORD);
static winapi_EnumProcessModules win32_EnumProcessModules;
+#ifdef __x86_64__
+static winapi_EnumProcessModulesEx win32_EnumProcessModulesEx;
+#endif
static winapi_GetModuleInformation win32_GetModuleInformation;
static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA;
return FALSE;
win32_EnumProcessModules =
GETPROCADDRESS (dll, EnumProcessModules);
+#ifdef __x86_64__
+ win32_EnumProcessModulesEx =
+ GETPROCADDRESS (dll, EnumProcessModulesEx);
+#endif
win32_GetModuleInformation =
GETPROCADDRESS (dll, GetModuleInformation);
win32_GetModuleFileNameExA =
GETPROCADDRESS (dll, GetModuleFileNameExA);
}
+#ifdef __x86_64__
+ if (wow64_process && win32_EnumProcessModulesEx == nullptr)
+ return FALSE;
+#endif
+
return (win32_EnumProcessModules != NULL
&& win32_GetModuleInformation != NULL
&& win32_GetModuleFileNameExA != NULL);
return;
cbNeeded = 0;
- ok = (*win32_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
+#ifdef __x86_64__
+ if (wow64_process)
+ ok = (*win32_EnumProcessModulesEx) (current_process_handle,
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded,
+ LIST_MODULES_32BIT);
+ else
+#endif
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
if (!ok || !cbNeeded)
return;
if (!DllHandle)
return;
- ok = (*win32_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
+#ifdef __x86_64__
+ if (wow64_process)
+ ok = (*win32_EnumProcessModulesEx) (current_process_handle,
+ DllHandle,
+ cbNeeded,
+ &cbNeeded,
+ LIST_MODULES_32BIT);
+ else
+#endif
+ ok = (*win32_EnumProcessModules) (current_process_handle,
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
if (!ok)
return;
+ char system_dir[MAX_PATH];
+ char syswow_dir[MAX_PATH];
+ size_t system_dir_len = 0;
+ bool convert_syswow_dir = false;
+#ifdef __x86_64__
+ if (wow64_process)
+#endif
+ {
+ /* This fails on 32bit Windows because it has no SysWOW64 directory,
+ and in this case a path conversion isn't necessary. */
+ UINT len = GetSystemWow64DirectoryA (syswow_dir, sizeof (syswow_dir));
+ if (len > 0)
+ {
+ /* Check that we have passed a large enough buffer. */
+ gdb_assert (len < sizeof (syswow_dir));
+
+ len = GetSystemDirectoryA (system_dir, sizeof (system_dir));
+ /* Error check. */
+ gdb_assert (len != 0);
+ /* Check that we have passed a large enough buffer. */
+ gdb_assert (len < sizeof (system_dir));
+
+ strcat (system_dir, "\\");
+ strcat (syswow_dir, "\\");
+ system_dir_len = strlen (system_dir);
+
+ convert_syswow_dir = true;
+ }
+
+ }
+
for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++)
{
MODULEINFO mi;
dll_name,
MAX_PATH) == 0)
continue;
- win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll);
+
+ const char *name = dll_name;
+ /* Convert the DLL path of 32bit processes returned by
+ GetModuleFileNameEx from the 64bit system directory to the
+ 32bit syswow64 directory if necessary. */
+ std::string syswow_dll_path;
+ if (convert_syswow_dir
+ && strncasecmp (dll_name, system_dir, system_dir_len) == 0
+ && strchr (dll_name + system_dir_len, '\\') == nullptr)
+ {
+ syswow_dll_path = syswow_dir;
+ syswow_dll_path += dll_name + system_dir_len;
+ name = syswow_dll_path.c_str();
+ }
+
+ win32_add_one_solib (name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll);
}
}
#endif
th->stopped_at_software_breakpoint = false;
if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT
- && (current_event.u.Exception.ExceptionRecord.ExceptionCode
- == EXCEPTION_BREAKPOINT)
+ && ((current_event.u.Exception.ExceptionRecord.ExceptionCode
+ == EXCEPTION_BREAKPOINT)
+ || (current_event.u.Exception.ExceptionRecord.ExceptionCode
+ == STATUS_WX86_BREAKPOINT))
&& child_initialization_done)
{
th->stopped_at_software_breakpoint = true;
if (readbuf == nullptr)
return -1;
- if (offset > sizeof (siginfo_er))
+ char *buf = (char *) &siginfo_er;
+ size_t bufsize = sizeof (siginfo_er);
+
+#ifdef __x86_64__
+ EXCEPTION_RECORD32 er32;
+ if (wow64_process)
+ {
+ buf = (char *) &er32;
+ bufsize = sizeof (er32);
+
+ er32.ExceptionCode = siginfo_er.ExceptionCode;
+ er32.ExceptionFlags = siginfo_er.ExceptionFlags;
+ er32.ExceptionRecord = (uintptr_t) siginfo_er.ExceptionRecord;
+ er32.ExceptionAddress = (uintptr_t) siginfo_er.ExceptionAddress;
+ er32.NumberParameters = siginfo_er.NumberParameters;
+ int i;
+ for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++)
+ er32.ExceptionInformation[i] = 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;
}
{
set_target_ops (&the_win32_target);
the_low_target.arch_setup ();
+
+#ifdef __x86_64__
+ /* These functions are loaded dynamically, because they are not available
+ on Windows XP. */
+ HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL"));
+ win32_Wow64GetThreadContext = GETPROCADDRESS (dll, Wow64GetThreadContext);
+ win32_Wow64SetThreadContext = GETPROCADDRESS (dll, Wow64SetThreadContext);
+#endif
}
projects / binutils-gdb.git / commitdiff