#include "gdbsupport/pathstuff.h"
#include "gdbsupport/gdb_wait.h"
+#define STATUS_WX86_BREAKPOINT 0x4000001F
+#define STATUS_WX86_SINGLE_STEP 0x4000001E
+
#define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
#define DebugActiveProcessStop dyn_DebugActiveProcessStop
#define DebugBreakProcess dyn_DebugBreakProcess
#define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
#define EnumProcessModules dyn_EnumProcessModules
+#define EnumProcessModulesEx dyn_EnumProcessModulesEx
#define GetModuleInformation dyn_GetModuleInformation
#define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
#define OpenProcessToken dyn_OpenProcessToken
#define GetConsoleFontSize dyn_GetConsoleFontSize
#define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
+#define Wow64SuspendThread dyn_Wow64SuspendThread
+#define Wow64GetThreadContext dyn_Wow64GetThreadContext
+#define Wow64SetThreadContext dyn_Wow64SetThreadContext
+#define Wow64GetThreadSelectorEntry dyn_Wow64GetThreadSelectorEntry
typedef BOOL WINAPI (AdjustTokenPrivileges_ftype) (HANDLE, BOOL,
PTOKEN_PRIVILEGES,
LPDWORD);
static EnumProcessModules_ftype *EnumProcessModules;
+#ifdef __x86_64__
+typedef BOOL WINAPI (EnumProcessModulesEx_ftype) (HANDLE, HMODULE *, DWORD,
+ LPDWORD, DWORD);
+static EnumProcessModulesEx_ftype *EnumProcessModulesEx;
+#endif
+
typedef BOOL WINAPI (GetModuleInformation_ftype) (HANDLE, HMODULE,
LPMODULEINFO, DWORD);
static GetModuleInformation_ftype *GetModuleInformation;
typedef COORD WINAPI (GetConsoleFontSize_ftype) (HANDLE, DWORD);
static GetConsoleFontSize_ftype *GetConsoleFontSize;
+#ifdef __x86_64__
+typedef DWORD WINAPI (Wow64SuspendThread_ftype) (HANDLE);
+static Wow64SuspendThread_ftype *Wow64SuspendThread;
+
+typedef BOOL WINAPI (Wow64GetThreadContext_ftype) (HANDLE, PWOW64_CONTEXT);
+static Wow64GetThreadContext_ftype *Wow64GetThreadContext;
+
+typedef BOOL WINAPI (Wow64SetThreadContext_ftype) (HANDLE,
+ const WOW64_CONTEXT *);
+static Wow64SetThreadContext_ftype *Wow64SetThreadContext;
+
+typedef BOOL WINAPI (Wow64GetThreadSelectorEntry_ftype) (HANDLE, DWORD,
+ PLDT_ENTRY);
+static Wow64GetThreadSelectorEntry_ftype *Wow64GetThreadSelectorEntry;
+#endif
+
#undef STARTUPINFO
#undef CreateProcess
#undef GetModuleFileNameEx
char *name;
int suspended;
int reload_context;
- CONTEXT context;
+ union
+ {
+ CONTEXT context;
+#ifdef __x86_64__
+ WOW64_CONTEXT wow64_context;
+#endif
+ };
}
windows_thread_info;
static int event_count = 0;
static int saw_create;
static int open_process_used = 0;
+#ifdef __x86_64__
+static bool wow64_process = false;
+static bool ignore_first_breakpoint = false;
+#endif
/* User options. */
static bool new_console = false;
/* Set the MAPPINGS static global to OFFSETS.
See the description of MAPPINGS for more details. */
-void
+static void
windows_set_context_register_offsets (const int *offsets)
{
mappings = offsets;
}
-/* See windows-nat.h. */
+/* Set the function that should be used by this module to determine
+ whether a given register is a segment register or not. */
-void
+static void
windows_set_segment_register_p (segment_register_p_ftype *fun)
{
segment_register_p = fun;
th->id = id;
th->h = h;
th->thread_local_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)
+ th->thread_local_base += 0x2000;
+#endif
th->next = thread_head.next;
thread_head.next = th;
/* Set the debug registers for the new thread if they are used. */
if (debug_registers_used)
{
- /* Only change the value of the debug registers. */
- th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
- CHECK (GetThreadContext (th->h, &th->context));
- th->context.Dr0 = dr[0];
- th->context.Dr1 = dr[1];
- th->context.Dr2 = dr[2];
- th->context.Dr3 = dr[3];
- th->context.Dr6 = DR6_CLEAR_VALUE;
- th->context.Dr7 = dr[7];
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ /* Only change the value of the debug registers. */
+ th->wow64_context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+ CHECK (Wow64GetThreadContext (th->h, &th->wow64_context));
+ th->wow64_context.Dr0 = dr[0];
+ th->wow64_context.Dr1 = dr[1];
+ th->wow64_context.Dr2 = dr[2];
+ th->wow64_context.Dr3 = dr[3];
+ th->wow64_context.Dr6 = DR6_CLEAR_VALUE;
+ th->wow64_context.Dr7 = dr[7];
+ CHECK (Wow64SetThreadContext (th->h, &th->wow64_context));
+ th->wow64_context.ContextFlags = 0;
+ }
+ else
+#endif
+ {
+ /* Only change the value of the debug registers. */
+ th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+ CHECK (GetThreadContext (th->h, &th->context));
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ th->context.Dr6 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
}
return th;
}
gdb_assert (r >= 0);
gdb_assert (!th->reload_context);
- char *context_offset = ((char *) &th->context) + mappings[r];
+ char *context_ptr = (char *) &th->context;
+#ifdef __x86_64__
+ if (wow64_process)
+ context_ptr = (char *) &th->wow64_context;
+#endif
+
+ char *context_offset = context_ptr + mappings[r];
struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
have_saved_context = 0;
}
else
+#endif
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ th->wow64_context.ContextFlags = CONTEXT_DEBUGGER_DR;
+ CHECK (Wow64GetThreadContext (th->h, &th->wow64_context));
+ /* Copy dr values from that thread.
+ But only if there were not modified since last stop.
+ PR gdb/2388 */
+ if (!debug_registers_changed)
+ {
+ dr[0] = th->wow64_context.Dr0;
+ dr[1] = th->wow64_context.Dr1;
+ dr[2] = th->wow64_context.Dr2;
+ dr[3] = th->wow64_context.Dr3;
+ dr[6] = th->wow64_context.Dr6;
+ dr[7] = th->wow64_context.Dr7;
+ }
+ }
+ else
#endif
{
th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
{
gdb_assert (r >= 0);
- regcache->raw_collect (r, ((char *) &th->context) + mappings[r]);
+ char *context_ptr = (char *) &th->context;
+#ifdef __x86_64__
+ if (wow64_process)
+ context_ptr = (char *) &th->wow64_context;
+#endif
+
+ regcache->raw_collect (r, context_ptr + mappings[r]);
}
/* Store a new register value into the context of the thread tied to
display_selector (HANDLE thread, DWORD sel)
{
LDT_ENTRY info;
- if (GetThreadSelectorEntry (thread, sel, &info))
+ BOOL ret;
+#ifdef __x86_64__
+ if (wow64_process)
+ ret = Wow64GetThreadSelectorEntry (thread, sel, &info);
+ else
+#endif
+ ret = GetThreadSelectorEntry (thread, sel, &info);
+ if (ret)
{
int base, limit;
printf_filtered ("0x%03x: ", (unsigned) sel);
}
if (!args)
{
-
- puts_filtered ("Selector $cs\n");
- display_selector (current_thread->h,
- current_thread->context.SegCs);
- puts_filtered ("Selector $ds\n");
- display_selector (current_thread->h,
- current_thread->context.SegDs);
- puts_filtered ("Selector $es\n");
- display_selector (current_thread->h,
- current_thread->context.SegEs);
- puts_filtered ("Selector $ss\n");
- display_selector (current_thread->h,
- current_thread->context.SegSs);
- puts_filtered ("Selector $fs\n");
- display_selector (current_thread->h,
- current_thread->context.SegFs);
- puts_filtered ("Selector $gs\n");
- display_selector (current_thread->h,
- current_thread->context.SegGs);
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ puts_filtered ("Selector $cs\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegCs);
+ puts_filtered ("Selector $ds\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegDs);
+ puts_filtered ("Selector $es\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegEs);
+ puts_filtered ("Selector $ss\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegSs);
+ puts_filtered ("Selector $fs\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegFs);
+ puts_filtered ("Selector $gs\n");
+ display_selector (current_thread->h,
+ current_thread->wow64_context.SegGs);
+ }
+ else
+#endif
+ {
+ puts_filtered ("Selector $cs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegCs);
+ puts_filtered ("Selector $ds\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegDs);
+ puts_filtered ("Selector $es\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegEs);
+ puts_filtered ("Selector $ss\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegSs);
+ puts_filtered ("Selector $fs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegFs);
+ puts_filtered ("Selector $gs\n");
+ display_selector (current_thread->h,
+ current_thread->context.SegGs);
+ }
}
else
{
ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
+#ifdef __x86_64__
+ if (ignore_first_breakpoint)
+ {
+ /* For WOW64 processes, there are always 2 breakpoint exceptions
+ on startup, first a BREAKPOINT for the 64bit ntdll.dll,
+ then a WX86_BREAKPOINT for the 32bit ntdll.dll.
+ Here we only care about the WX86_BREAKPOINT's. */
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ ignore_first_breakpoint = false;
+ }
+#endif
+ /* FALLTHROUGH */
+ case STATUS_WX86_BREAKPOINT:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
ourstatus->value.sig = GDB_SIGNAL_INT;
break;
case EXCEPTION_SINGLE_STEP:
+ case STATUS_WX86_SINGLE_STEP:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
if ((id == -1 || id == (int) th->id)
&& th->suspended)
{
- if (debug_registers_changed)
+#ifdef __x86_64__
+ if (wow64_process)
{
- th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
- th->context.Dr0 = dr[0];
- th->context.Dr1 = dr[1];
- th->context.Dr2 = dr[2];
- th->context.Dr3 = dr[3];
- th->context.Dr6 = DR6_CLEAR_VALUE;
- th->context.Dr7 = dr[7];
+ if (debug_registers_changed)
+ {
+ th->wow64_context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
+ th->wow64_context.Dr0 = dr[0];
+ th->wow64_context.Dr1 = dr[1];
+ th->wow64_context.Dr2 = dr[2];
+ th->wow64_context.Dr3 = dr[3];
+ th->wow64_context.Dr6 = DR6_CLEAR_VALUE;
+ th->wow64_context.Dr7 = dr[7];
+ }
+ if (th->wow64_context.ContextFlags)
+ {
+ DWORD ec = 0;
+
+ if (GetExitCodeThread (th->h, &ec)
+ && ec == STILL_ACTIVE)
+ {
+ BOOL status = Wow64SetThreadContext (th->h,
+ &th->wow64_context);
+
+ if (!killed)
+ CHECK (status);
+ }
+ th->wow64_context.ContextFlags = 0;
+ }
}
- if (th->context.ContextFlags)
+ else
+#endif
{
- DWORD ec = 0;
-
- if (GetExitCodeThread (th->h, &ec)
- && ec == STILL_ACTIVE)
+ if (debug_registers_changed)
{
- BOOL status = SetThreadContext (th->h, &th->context);
+ th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ th->context.Dr6 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ }
+ if (th->context.ContextFlags)
+ {
+ DWORD ec = 0;
+
+ if (GetExitCodeThread (th->h, &ec)
+ && ec == STILL_ACTIVE)
+ {
+ BOOL status = SetThreadContext (th->h, &th->context);
- if (!killed)
- CHECK (status);
+ if (!killed)
+ CHECK (status);
+ }
+ th->context.ContextFlags = 0;
}
- th->context.ContextFlags = 0;
}
if (th->suspended > 0)
(void) ResumeThread (th->h);
th = thread_rec (inferior_ptid.tid (), FALSE);
if (th)
{
- if (step)
+#ifdef __x86_64__
+ if (wow64_process)
{
- /* Single step by setting t bit. */
- struct regcache *regcache = get_current_regcache ();
- struct gdbarch *gdbarch = regcache->arch ();
- fetch_registers (regcache, gdbarch_ps_regnum (gdbarch));
- th->context.EFlags |= FLAG_TRACE_BIT;
- }
+ if (step)
+ {
+ /* Single step by setting t bit. */
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = regcache->arch ();
+ fetch_registers (regcache, gdbarch_ps_regnum (gdbarch));
+ th->wow64_context.EFlags |= FLAG_TRACE_BIT;
+ }
- if (th->context.ContextFlags)
+ if (th->wow64_context.ContextFlags)
+ {
+ if (debug_registers_changed)
+ {
+ th->wow64_context.Dr0 = dr[0];
+ th->wow64_context.Dr1 = dr[1];
+ th->wow64_context.Dr2 = dr[2];
+ th->wow64_context.Dr3 = dr[3];
+ th->wow64_context.Dr6 = DR6_CLEAR_VALUE;
+ th->wow64_context.Dr7 = dr[7];
+ }
+ CHECK (Wow64SetThreadContext (th->h, &th->wow64_context));
+ th->wow64_context.ContextFlags = 0;
+ }
+ }
+ else
+#endif
{
- if (debug_registers_changed)
+ if (step)
{
- th->context.Dr0 = dr[0];
- th->context.Dr1 = dr[1];
- th->context.Dr2 = dr[2];
- th->context.Dr3 = dr[3];
- th->context.Dr6 = DR6_CLEAR_VALUE;
- th->context.Dr7 = dr[7];
+ /* Single step by setting t bit. */
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = regcache->arch ();
+ fetch_registers (regcache, gdbarch_ps_regnum (gdbarch));
+ th->context.EFlags |= FLAG_TRACE_BIT;
+ }
+
+ if (th->context.ContextFlags)
+ {
+ if (debug_registers_changed)
+ {
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ th->context.Dr6 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ }
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
}
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
}
}
HMODULE *hmodules;
int i;
- if (EnumProcessModules (current_process_handle, &dummy_hmodule,
- sizeof (HMODULE), &cb_needed) == 0)
- return;
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ if (EnumProcessModulesEx (current_process_handle, &dummy_hmodule,
+ sizeof (HMODULE), &cb_needed,
+ LIST_MODULES_32BIT) == 0)
+ return;
+ }
+ else
+#endif
+ {
+ if (EnumProcessModules (current_process_handle, &dummy_hmodule,
+ sizeof (HMODULE), &cb_needed) == 0)
+ return;
+ }
if (cb_needed < 1)
return;
hmodules = (HMODULE *) alloca (cb_needed);
- if (EnumProcessModules (current_process_handle, hmodules,
- cb_needed, &cb_needed) == 0)
- return;
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ if (EnumProcessModulesEx (current_process_handle, hmodules,
+ cb_needed, &cb_needed,
+ LIST_MODULES_32BIT) == 0)
+ return;
+ }
+ else
+#endif
+ {
+ if (EnumProcessModules (current_process_handle, hmodules,
+ cb_needed, &cb_needed) == 0)
+ return;
+ }
for (i = 1; i < (int) (cb_needed / sizeof (HMODULE)); i++)
{
clear_proceed_status (0);
init_wait_for_inferior ();
+#ifdef __x86_64__
+ ignore_first_breakpoint = !attaching && wow64_process;
+
+ if (!wow64_process)
+ {
+ windows_set_context_register_offsets (amd64_mappings);
+ windows_set_segment_register_p (amd64_windows_segment_register_p);
+ }
+ else
+#endif
+ {
+ windows_set_context_register_offsets (i386_mappings);
+ windows_set_segment_register_p (i386_windows_segment_register_p);
+ }
+
inf = current_inferior ();
inferior_appeared (inf, pid);
inf->attach_flag = attaching;
target_pid_to_str (ptid_t (pid)).c_str ());
}
+#ifdef __x86_64__
+ HANDLE h = OpenProcess (PROCESS_QUERY_INFORMATION, FALSE, pid);
+ if (h != NULL)
+ {
+ BOOL wow64;
+ if (IsWow64Process (h, &wow64))
+ wow64_process = wow64;
+ CloseHandle (h);
+ }
+#endif
+
do_initial_windows_stuff (this, pid, 1);
target_terminal::ours ();
}
DWORD cbNeeded;
cbNeeded = 0;
- if (!EnumProcessModules (current_process_handle, &dh_buf,
- sizeof (HMODULE), &cbNeeded) || !cbNeeded)
- return 0;
+#ifdef __x86_64__
+ if (wow64_process)
+ {
+ if (!EnumProcessModulesEx (current_process_handle, &dh_buf,
+ sizeof (HMODULE), &cbNeeded,
+ LIST_MODULES_32BIT) || !cbNeeded)
+ return 0;
+ }
+ else
+#endif
+ {
+ if (!EnumProcessModules (current_process_handle, &dh_buf,
+ sizeof (HMODULE), &cbNeeded) || !cbNeeded)
+ return 0;
+ }
/* We know the executable is always first in the list of modules,
which we just fetched. So no need to fetch more. */
error (_("Error creating process %s, (error %u)."),
exec_file, (unsigned) GetLastError ());
+#ifdef __x86_64__
+ BOOL wow64;
+ if (IsWow64Process (pi.hProcess, &wow64))
+ wow64_process = wow64;
+#endif
+
CloseHandle (pi.hThread);
CloseHandle (pi.hProcess);
windows_xfer_siginfo (gdb_byte *readbuf, ULONGEST offset, ULONGEST len,
ULONGEST *xfered_len)
{
+ 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 (siginfo_er.ExceptionCode == 0)
return TARGET_XFER_E_IO;
if (readbuf == nullptr)
return TARGET_XFER_E_IO;
- if (offset > sizeof (siginfo_er))
+ if (offset > bufsize)
return TARGET_XFER_E_IO;
- 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);
*xfered_len = len;
return TARGET_XFER_OK;
GPA (hm, GetConsoleFontSize);
GPA (hm, DebugActiveProcessStop);
GPA (hm, GetCurrentConsoleFont);
+#ifdef __x86_64__
+ GPA (hm, Wow64SuspendThread);
+ GPA (hm, Wow64GetThreadContext);
+ GPA (hm, Wow64SetThreadContext);
+ GPA (hm, Wow64GetThreadSelectorEntry);
+#endif
}
/* Set variables to dummy versions of these processes if the function
if (hm)
{
GPA (hm, EnumProcessModules);
+#ifdef __x86_64__
+ GPA (hm, EnumProcessModulesEx);
+#endif
GPA (hm, GetModuleInformation);
GetModuleFileNameEx = (GetModuleFileNameEx_ftype *)
GetProcAddress (hm, GetModuleFileNameEx_name);
projects / binutils-gdb.git / commitdiff