/* Target-vector operations for controlling win32 child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
+
+ Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free
+ Software Foundation, Inc.
+
+ Contributed by Cygnus Solutions, A Red Hat Company.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
+ Boston, MA 02111-1307, USA. */
-/* by Steve Chamberlain, sac@cygnus.com */
+/* Originally by Steve Chamberlain, sac@cygnus.com */
/* We assume we're being built with and will be used for cygwin. */
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
-#include "gdb_wait.h"
#include "gdbcore.h"
#include "command.h"
+#include "completer.h"
+#include "regcache.h"
+#include "top.h"
+#include "i386-tdep.h"
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
-
-#ifdef _MSC_VER
-#include "windefs.h"
-#else /* other WIN32 compiler */
#include <windows.h>
#include <imagehlp.h>
-#endif
+#include <sys/cygwin.h>
#include "buildsym.h"
#include "symfile.h"
#include <unistd.h>
/* The ui's event loop. */
-extern int (*ui_loop_hook) PARAMS ((int signo));
+extern int (*ui_loop_hook) (int signo);
/* If we're not using the old Cygwin header file set, define the
following which never should have been in the generic Win32 API
headers in the first place since they were our own invention... */
#ifndef _GNU_H_WINDOWS_H
-#define FLAG_TRACE_BIT 0x100
-#define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+enum
+ {
+ FLAG_TRACE_BIT = 0x100,
+ CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
+ };
#endif
+#include <sys/procfs.h>
+#include <psapi.h>
+
+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
+ | CONTEXT_EXTENDED_REGISTERS
+
+static unsigned dr[8];
+static int debug_registers_changed = 0;
+static int debug_registers_used = 0;
/* The string sent by cygwin when it processes a signal.
FIXME: This should be in a cygwin include file. */
#define CYGWIN_SIGNAL_STRING "cygwin: signal"
-#define CHECK(x) check (x, __FILE__,__LINE__)
-#define DEBUG_EXEC(x) if (debug_exec) printf x
-#define DEBUG_EVENTS(x) if (debug_events) printf x
-#define DEBUG_MEM(x) if (debug_memory) printf x
-#define DEBUG_EXCEPT(x) if (debug_exceptions) printf x
+#define CHECK(x) check (x, __FILE__,__LINE__)
+#define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
+#define DEBUG_EVENTS(x) if (debug_events) printf_unfiltered x
+#define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
+#define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
/* Forward declaration */
extern struct target_ops child_ops;
-static void child_stop PARAMS ((void));
-static int win32_child_thread_alive PARAMS ((int));
-void child_kill_inferior PARAMS ((void));
+static void child_stop (void);
+static int win32_child_thread_alive (ptid_t);
+void child_kill_inferior (void);
+
+static enum target_signal last_sig = TARGET_SIGNAL_0;
+/* Set if a signal was received from the debugged process */
/* Thread information structure used to track information that is
not available in gdb's thread structure. */
int suspend_count;
CONTEXT context;
STACKFRAME sf;
- } thread_info;
-
-static thread_info thread_head = {NULL};
+ }
+thread_info;
-/* The saved state for a continue after breaking back to gdb. */
-static DWORD continue_status;
+static thread_info thread_head;
/* The process and thread handles for the above context. */
WaitForDebugEvent */
static HANDLE current_process_handle; /* Currently executing process */
static thread_info *current_thread; /* Info on currently selected thread */
-static DWORD main_thread_id; /* Thread ID of the main thread */
+static DWORD main_thread_id; /* Thread ID of the main thread */
/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
+static int saw_create;
/* User options. */
static int new_console = 0;
static int new_group = 1;
-static int debug_exec = 0; /* show execution */
-static int debug_events = 0; /* show events from kernel */
-static int debug_memory = 0; /* show target memory accesses */
+static int debug_exec = 0; /* show execution */
+static int debug_events = 0; /* show events from kernel */
+static int debug_memory = 0; /* show target memory accesses */
static int debug_exceptions = 0; /* show target exceptions */
+static int useshell = 0; /* use shell for subprocesses */
/* This vector maps GDB's idea of a register's number into an address
in the win32 exception context vector.
context_offset (FloatSave.DataSelector),
context_offset (FloatSave.DataOffset),
context_offset (FloatSave.ErrorSelector)
+ /* XMM0-7 */ ,
+ context_offset (ExtendedRegisters[10*16]),
+ context_offset (ExtendedRegisters[11*16]),
+ context_offset (ExtendedRegisters[12*16]),
+ context_offset (ExtendedRegisters[13*16]),
+ context_offset (ExtendedRegisters[14*16]),
+ context_offset (ExtendedRegisters[15*16]),
+ context_offset (ExtendedRegisters[16*16]),
+ context_offset (ExtendedRegisters[17*16]),
+ /* MXCSR */
+ context_offset (ExtendedRegisters[24])
};
#undef context_offset
{EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
{DBG_CONTROL_C, TARGET_SIGNAL_INT},
{EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
+ {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
{-1, -1}};
+static void
+check (BOOL ok, const char *file, int line)
+{
+ if (!ok)
+ printf_filtered ("error return %s:%d was %lu\n", file, line,
+ GetLastError ());
+}
+
+
/* Find a thread record given a thread id.
If get_context then also retrieve the context for this
thread. */
{
if (!th->suspend_count && get_context)
{
- if (get_context > 0)
+ if (get_context > 0 && id != current_event.dwThreadId)
th->suspend_count = SuspendThread (th->h) + 1;
else if (get_context < 0)
th->suspend_count = -1;
- th->context.ContextFlags = CONTEXT_DEBUGGER;
+ th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
GetThreadContext (th->h, &th->context);
+ if (id == current_event.dwThreadId)
+ {
+ /* Copy dr values from that thread. */
+ dr[0] = th->context.Dr0;
+ dr[1] = th->context.Dr1;
+ dr[2] = th->context.Dr2;
+ dr[3] = th->context.Dr3;
+ dr[6] = th->context.Dr6;
+ dr[7] = th->context.Dr7;
+ }
}
return th;
}
th->h = h;
th->next = thread_head.next;
thread_head.next = th;
- add_thread (id);
+ add_thread (pid_to_ptid (id));
+ /* Set the debug registers for the new thread in 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 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
return th;
}
/* Clear out any old thread list and reintialize it to a
pristine state. */
static void
-child_init_thread_list ()
+child_init_thread_list (void)
{
thread_info *th = &thread_head;
thread_info *here = th->next;
th->next = here->next;
(void) CloseHandle (here->h);
- free (here);
+ xfree (here);
}
}
thread_info *th;
if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (id));
- delete_thread (id);
+ printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
+ delete_thread (pid_to_ptid (id));
for (th = &thread_head;
th->next != NULL && th->next->id != id;
thread_info *here = th->next;
th->next = here->next;
CloseHandle (here->h);
- free (here);
+ xfree (here);
}
}
-static void
-check (BOOL ok, const char *file, int line)
-{
- if (!ok)
- printf_filtered ("error return %s:%d was %d\n", file, line, GetLastError ());
-}
-
static void
do_child_fetch_inferior_registers (int r)
{
long l;
if (r == FCS_REGNUM)
{
- l = *((long *)context_offset) & 0xffff;
+ l = *((long *) context_offset) & 0xffff;
supply_register (r, (char *) &l);
}
else if (r == FOP_REGNUM)
{
- l = (*((long *)context_offset) >> 16) & ((1 << 11) - 1);
+ l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
supply_register (r, (char *) &l);
}
else if (r >= 0)
static void
child_fetch_inferior_registers (int r)
{
- current_thread = thread_rec (inferior_pid, TRUE);
+ current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
do_child_fetch_inferior_registers (r);
}
do_child_store_inferior_registers (int r)
{
if (r >= 0)
- read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]);
+ regcache_collect (r, ((char *) ¤t_thread->context) + mappings[r]);
else
{
for (r = 0; r < NUM_REGS; r++)
static void
child_store_inferior_registers (int r)
{
- current_thread = thread_rec (inferior_pid, TRUE);
+ current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
do_child_store_inferior_registers (r);
}
-#include <psapi.h>
static int psapi_loaded = 0;
static HMODULE psapi_module_handle = NULL;
-static BOOL WINAPI (*psapi_EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD)= NULL;
-static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD)= NULL;
-static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD)= NULL;
+static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
+static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
+static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
-int psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+int
+psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
{
DWORD len;
MODULEINFO mi;
int i;
- HMODULE dh_buf [ 1 ];
- HMODULE* DllHandle = dh_buf;
+ HMODULE dh_buf[1];
+ HMODULE *DllHandle = dh_buf;
DWORD cbNeeded;
BOOL ok;
if (!psapi_loaded ||
- psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
+ psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
{
- if (psapi_loaded)goto failed;
+ if (psapi_loaded)
+ goto failed;
psapi_loaded = 1;
psapi_module_handle = LoadLibrary ("psapi.dll");
if (!psapi_module_handle)
- {
- /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ());*/
- goto failed;
- }
- psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules" );
+ {
+ /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
+ goto failed;
+ }
+ psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
- "GetModuleFileNameExA");
- if (psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
+ "GetModuleFileNameExA");
+ if (psapi_EnumProcessModules == NULL ||
+ psapi_GetModuleInformation == NULL ||
+ psapi_GetModuleFileNameExA == NULL)
goto failed;
}
cbNeeded = 0;
ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
+ DllHandle,
+ sizeof (HMODULE),
+ &cbNeeded);
if (!ok || !cbNeeded)
goto failed;
- DllHandle = (HMODULE*) alloca (cbNeeded);
+ DllHandle = (HMODULE *) alloca (cbNeeded);
if (!DllHandle)
goto failed;
ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
+ DllHandle,
+ cbNeeded,
+ &cbNeeded);
if (!ok)
goto failed;
- for (i = 0; i < cbNeeded / sizeof (HMODULE); i++)
+ for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
{
if (!(*psapi_GetModuleInformation) (current_process_handle,
- DllHandle [i],
- &mi,
- sizeof (mi)))
+ DllHandle[i],
+ &mi,
+ sizeof (mi)))
error ("Can't get module info");
len = (*psapi_GetModuleFileNameExA) (current_process_handle,
- DllHandle [i],
- dll_name_ret,
- MAX_PATH);
+ DllHandle[i],
+ dll_name_ret,
+ MAX_PATH);
if (len == 0)
- error ("Error getting dll name: %u\n", GetLastError ());
+ error ("Error getting dll name: %u\n", (unsigned) GetLastError ());
if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
return 1;
return 0;
}
+/* Encapsulate the information required in a call to
+ symbol_file_add_args */
+struct safe_symbol_file_add_args
+{
+ char *name;
+ int from_tty;
+ struct section_addr_info *addrs;
+ int mainline;
+ int flags;
+ struct ui_file *err, *out;
+ struct objfile *ret;
+};
+
+/* Maintain a linked list of "so" information. */
+struct so_stuff
+{
+ struct so_stuff *next;
+ DWORD load_addr;
+ DWORD end_addr;
+ int loaded;
+ struct objfile *objfile;
+ char name[1];
+} solib_start, *solib_end;
+
+/* Call symbol_file_add with stderr redirected. We don't care if there
+ are errors. */
+static int
+safe_symbol_file_add_stub (void *argv)
+{
+#define p ((struct safe_symbol_file_add_args *)argv)
+ struct so_stuff *so = &solib_start;
+
+ while ((so = so->next))
+ if (so->loaded && strcasecmp (so->name, p->name) == 0)
+ return 0;
+ p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
+ return !!p->ret;
+#undef p
+}
+
+/* Restore gdb's stderr after calling symbol_file_add */
+static void
+safe_symbol_file_add_cleanup (void *p)
+{
+#define sp ((struct safe_symbol_file_add_args *)p)
+ gdb_flush (gdb_stderr);
+ gdb_flush (gdb_stdout);
+ ui_file_delete (gdb_stderr);
+ ui_file_delete (gdb_stdout);
+ gdb_stderr = sp->err;
+ gdb_stdout = sp->out;
+#undef sp
+}
+
+/* symbol_file_add wrapper that prevents errors from being displayed. */
+static struct objfile *
+safe_symbol_file_add (char *name, int from_tty,
+ struct section_addr_info *addrs,
+ int mainline, int flags)
+{
+ struct safe_symbol_file_add_args p;
+ struct cleanup *cleanup;
+
+ cleanup = make_cleanup (safe_symbol_file_add_cleanup, &p);
+
+ p.err = gdb_stderr;
+ p.out = gdb_stdout;
+ gdb_flush (gdb_stderr);
+ gdb_flush (gdb_stdout);
+ gdb_stderr = ui_file_new ();
+ gdb_stdout = ui_file_new ();
+ p.name = name;
+ p.from_tty = from_tty;
+ p.addrs = addrs;
+ p.mainline = mainline;
+ p.flags = flags;
+ catch_errors (safe_symbol_file_add_stub, &p, "", RETURN_MASK_ERROR);
+
+ do_cleanups (cleanup);
+ return p.ret;
+}
+
+/* Remember the maximum DLL length for printing in info dll command. */
+int max_dll_name_len;
+
+static void
+register_loaded_dll (const char *name, DWORD load_addr)
+{
+ struct so_stuff *so;
+ char ppath[MAX_PATH + 1];
+ char buf[MAX_PATH + 1];
+ char cwd[MAX_PATH + 1];
+ char *p;
+ WIN32_FIND_DATA w32_fd;
+ HANDLE h = FindFirstFile(name, &w32_fd);
+ MEMORY_BASIC_INFORMATION m;
+ size_t len;
+
+ if (h == INVALID_HANDLE_VALUE)
+ strcpy (buf, name);
+ else
+ {
+ FindClose (h);
+ strcpy (buf, name);
+ if (GetCurrentDirectory (MAX_PATH + 1, cwd))
+ {
+ p = strrchr (buf, '\\');
+ if (p)
+ p[1] = '\0';
+ SetCurrentDirectory (buf);
+ GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
+ SetCurrentDirectory (cwd);
+ }
+ }
+
+ cygwin_conv_to_posix_path (buf, ppath);
+ so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1);
+ so->loaded = 0;
+ so->load_addr = load_addr;
+ if (VirtualQueryEx (current_process_handle, (void *) load_addr, &m,
+ sizeof (m)))
+ so->end_addr = (DWORD) m.AllocationBase + m.RegionSize;
+ else
+ so->end_addr = load_addr + 0x2000; /* completely arbitrary */
+
+ so->next = NULL;
+ so->objfile = NULL;
+ strcpy (so->name, ppath);
+
+ solib_end->next = so;
+ solib_end = so;
+ len = strlen (ppath);
+ if (len > max_dll_name_len)
+ max_dll_name_len = len;
+}
+
+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];
+ DWORD 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;
+
+ /* 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;
+
+ /* 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 = (WCHAR *) alloca (len * sizeof (WCHAR));
+ ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
+ &done);
+
+ WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
+ }
+
+ return buf;
+}
+
/* Wait for child to do something. Return pid of child, or -1 in case
of error; store status through argument pointer OURSTATUS. */
-
static int
-handle_load_dll (PTR dummy)
+handle_load_dll (void *dummy)
{
LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
- DWORD dll_name_ptr;
- DWORD done;
char dll_buf[MAX_PATH + 1];
- char *p, *dll_name = NULL;
- struct objfile *objfile;
- MEMORY_BASIC_INFORMATION minfo;
- struct section_addr_info section_addrs;
+ char *dll_name = NULL;
+ char *p;
- memset (§ion_addrs, 0, sizeof (section_addrs));
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
- dll_buf[0] = dll_buf[sizeof(dll_buf) - 1] = '\0';
+ dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
dll_name = dll_buf;
- /* Attempt to read the name of the dll that was detected.
- This is documented to work only when actively debugging
- a program. It will not work for attached processes. */
- if (dll_name == NULL || *dll_name == '\0')
- {
- int size = event->fUnicode ? sizeof (WCHAR) : sizeof (char);
- int len = 0;
- char b[2];
+ if (*dll_name == '\0')
+ dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
+ if (!dll_name)
+ return 1;
+
+ register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000);
- ReadProcessMemory (current_process_handle,
- (LPCVOID) event->lpImageName,
- (char *) &dll_name_ptr,
- sizeof (dll_name_ptr), &done);
+ return 1;
+}
- /* See if we could read the address of a string, and that the
- address isn't null. */
+static int
+handle_unload_dll (void *dummy)
+{
+ DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
+ struct so_stuff *so;
- if (done != sizeof (dll_name_ptr) || !dll_name_ptr)
+ for (so = &solib_start; so->next != NULL; so = so->next)
+ if (so->next->load_addr == lpBaseOfDll)
+ {
+ struct so_stuff *sodel = so->next;
+ so->next = sodel->next;
+ if (!so->next)
+ solib_end = so;
+ if (sodel->objfile)
+ free_objfile (sodel->objfile);
+ xfree(sodel);
return 1;
+ }
+ error ("Error: dll starting at 0x%lx not found.\n", (DWORD) lpBaseOfDll);
- do
- {
- ReadProcessMemory (current_process_handle,
- (LPCVOID) (dll_name_ptr + len * size),
- &b,
- size,
- &done);
- len++;
- }
- while ((b[0] != 0 || b[size - 1] != 0) && done == size);
+ return 0;
+}
- dll_name = alloca (len);
+char *
+solib_address (CORE_ADDR address)
+{
+ struct so_stuff *so;
+ for (so = &solib_start; so->next != NULL; so = so->next)
+ if (address >= so->load_addr && address <= so->end_addr)
+ return so->name;
+ return NULL;
+}
- if (event->fUnicode)
- {
- WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR));
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- unicode_dll_name,
- len * sizeof (WCHAR),
- &done);
-
- WideCharToMultiByte (CP_ACP, 0,
- unicode_dll_name, len,
- dll_name, len, 0, 0);
- }
- else
+/* Return name of last loaded DLL. */
+char *
+child_solib_loaded_library_pathname (int pid)
+{
+ return !solib_end || !solib_end->name[0] ? NULL : solib_end->name;
+}
+
+/* Clear list of loaded DLLs. */
+void
+child_clear_solibs (void)
+{
+ struct so_stuff *so, *so1 = solib_start.next;
+
+ while ((so = so1) != NULL)
+ {
+ so1 = so->next;
+ xfree (so);
+ }
+
+ solib_start.next = NULL;
+ solib_start.objfile = NULL;
+ solib_end = &solib_start;
+ max_dll_name_len = sizeof ("DLL Name") - 1;
+}
+
+/* Get the loaded address of all sections, given that .text was loaded
+ at text_load. Assumes that all sections are subject to the same
+ relocation offset. Returns NULL if problems occur or if the
+ sections were not relocated. */
+
+static struct section_addr_info *
+get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
+{
+ struct section_addr_info *result = NULL;
+ int section_count = bfd_count_sections (abfd);
+ asection *text_section = bfd_get_section_by_name (abfd, ".text");
+ CORE_ADDR text_vma;
+
+ if (!text_section)
+ {
+ /* Couldn't get the .text section. Weird. */
+ }
+
+ else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
+ {
+ /* DLL wasn't relocated. */
+ }
+
+ else
+ {
+ /* Figure out all sections' loaded addresses. The offset here is
+ such that taking a bfd_get_section_vma() result and adding
+ offset will give the real load address of the section. */
+
+ CORE_ADDR offset = text_load - text_vma;
+
+ struct section_table *table_start = NULL;
+ struct section_table *table_end = NULL;
+ struct section_table *iter = NULL;
+
+ build_section_table (abfd, &table_start, &table_end);
+
+ for (iter = table_start; iter < table_end; ++iter)
{
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- dll_name,
- len,
- &done);
+ /* Relocated addresses. */
+ iter->addr += offset;
+ iter->endaddr += offset;
}
+
+ result = build_section_addr_info_from_section_table (table_start,
+ table_end);
+
+ xfree (table_start);
}
- if (!dll_name)
- return 1;
+ return result;
+}
- while ((p = strchr (dll_name, '\\')))
- *p = '/';
+/* Add DLL symbol information. */
+static struct objfile *
+solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
+{
+ struct section_addr_info *addrs = NULL;
+ static struct objfile *result = NULL;
+ bfd *abfd = NULL;
/* The symbols in a dll are offset by 0x1000, which is the
the offset from 0 of the first byte in an image - because
- of the file header and the section alignment.
+ of the file header and the section alignment. */
- FIXME: Is this the real reason that we need the 0x1000 ? */
+ if (!name || !name[0])
+ return NULL;
- printf_unfiltered ("%x:%s", event->lpBaseOfDll, dll_name);
- section_addrs.text_addr = (int) event->lpBaseOfDll + 0x1000;
- symbol_file_add (dll_name, 0, §ion_addrs, 0, OBJF_SHARED);
- printf_unfiltered ("\n");
+ abfd = bfd_openr (name, "pei-i386");
- return 1;
+ if (!abfd)
+ {
+ /* pei failed - try pe */
+ abfd = bfd_openr (name, "pe-i386");
+ }
+
+ if (abfd)
+ {
+ if (bfd_check_format (abfd, bfd_object))
+ {
+ addrs = get_relocated_section_addrs (abfd, load_addr);
+ }
+
+ bfd_close (abfd);
+ }
+
+ if (addrs)
+ {
+ result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
+ free_section_addr_info (addrs);
+ }
+ else
+ {
+ /* Fallback on handling just the .text section. */
+ struct cleanup *my_cleanups;
+
+ addrs = alloc_section_addr_info (1);
+ my_cleanups = make_cleanup (xfree, addrs);
+ addrs->other[0].name = ".text";
+ addrs->other[0].addr = load_addr;
+
+ result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
+ do_cleanups (my_cleanups);
+ }
+
+ return result;
+}
+
+/* Load DLL symbol info. */
+void
+dll_symbol_command (char *args, int from_tty)
+{
+ int n;
+ dont_repeat ();
+
+ if (args == NULL)
+ error ("dll-symbols requires a file name");
+
+ n = strlen (args);
+ if (n > 4 && strcasecmp (args + n - 4, ".dll") != 0)
+ {
+ char *newargs = (char *) alloca (n + 4 + 1);
+ strcpy (newargs, args);
+ strcat (newargs, ".dll");
+ args = newargs;
+ }
+
+ safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
+}
+
+/* List currently loaded DLLs. */
+void
+info_dll_command (char *ignore, int from_tty)
+{
+ struct so_stuff *so = &solib_start;
+
+ if (!so->next)
+ return;
+
+ printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
+ while ((so = so->next) != NULL)
+ printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr);
+
+ return;
}
/* Handle DEBUG_STRING output from child process.
if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0)
{
if (strncmp (s, "cYg", 3) != 0)
- warning (s);
+ warning ("%s", s);
}
else
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
}
- free (s);
+ xfree (s);
return gotasig;
}
+static int
+display_selector (HANDLE thread, DWORD sel)
+{
+ LDT_ENTRY info;
+ if (GetThreadSelectorEntry (thread, sel, &info))
+ {
+ int base, limit;
+ printf_filtered ("0x%03lx: ", sel);
+ if (!info.HighWord.Bits.Pres)
+ {
+ puts_filtered ("Segment not present\n");
+ return 0;
+ }
+ base = (info.HighWord.Bits.BaseHi << 24) +
+ (info.HighWord.Bits.BaseMid << 16)
+ + info.BaseLow;
+ limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
+ if (info.HighWord.Bits.Granularity)
+ limit = (limit << 12) | 0xfff;
+ printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
+ if (info.HighWord.Bits.Default_Big)
+ puts_filtered(" 32-bit ");
+ else
+ puts_filtered(" 16-bit ");
+ switch ((info.HighWord.Bits.Type & 0xf) >> 1)
+ {
+ case 0:
+ puts_filtered ("Data (Read-Only, Exp-up");
+ break;
+ case 1:
+ puts_filtered ("Data (Read/Write, Exp-up");
+ break;
+ case 2:
+ puts_filtered ("Unused segment (");
+ break;
+ case 3:
+ puts_filtered ("Data (Read/Write, Exp-down");
+ break;
+ case 4:
+ puts_filtered ("Code (Exec-Only, N.Conf");
+ break;
+ case 5:
+ puts_filtered ("Code (Exec/Read, N.Conf");
+ break;
+ case 6:
+ puts_filtered ("Code (Exec-Only, Conf");
+ break;
+ case 7:
+ puts_filtered ("Code (Exec/Read, Conf");
+ break;
+ default:
+ printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
+ }
+ if ((info.HighWord.Bits.Type & 0x1) == 0)
+ puts_filtered(", N.Acc");
+ puts_filtered (")\n");
+ if ((info.HighWord.Bits.Type & 0x10) == 0)
+ puts_filtered("System selector ");
+ printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
+ if (info.HighWord.Bits.Granularity)
+ puts_filtered ("Page granular.\n");
+ else
+ puts_filtered ("Byte granular.\n");
+ return 1;
+ }
+ else
+ {
+ printf_filtered ("Invalid selector 0x%lx.\n",sel);
+ return 0;
+ }
+}
+
+static void
+display_selectors (char * args, int from_tty)
+{
+ if (!current_thread)
+ {
+ puts_filtered ("Impossible to display selectors now.\n");
+ return;
+ }
+ 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);
+ }
+ else
+ {
+ int sel;
+ sel = parse_and_eval_long (args);
+ printf_filtered ("Selector \"%s\"\n",args);
+ display_selector (current_thread->h, sel);
+ }
+}
+
+static struct cmd_list_element *info_w32_cmdlist = NULL;
+
+static void
+info_w32_command (char *args, int from_tty)
+{
+ help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
+}
+
+
+#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
+ printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
+ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
+
static int
handle_exception (struct target_waitstatus *ourstatus)
{
- int i;
- int done = 0;
thread_info *th;
+ DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
/* Record the context of the current thread */
th = thread_rec (current_event.dwThreadId, -1);
- switch (current_event.u.Exception.ExceptionRecord.ExceptionCode)
+ switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
- DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
+ ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ break;
+ case STATUS_STACK_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ case STATUS_FLOAT_DENORMAL_OPERAND:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_INEXACT_RESULT:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_INVALID_OPERATION:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
+ case STATUS_FLOAT_STACK_CHECK:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case STATUS_FLOAT_UNDERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
case STATUS_FLOAT_DIVIDE_BY_ZERO:
- case STATUS_FLOAT_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
- DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
ourstatus->value.sig = TARGET_SIGNAL_FPE;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
- case STATUS_STACK_OVERFLOW:
- DEBUG_EXCEPT (("gdb: Target exception STACK_OVERFLOW at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ case STATUS_INTEGER_OVERFLOW:
+ DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
+ ourstatus->value.sig = TARGET_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
- DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
- DEBUG_EXCEPT (("gdb: Target exception CONTROL_C at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
+ ourstatus->value.sig = TARGET_SIGNAL_INT;
+ break;
+ case DBG_CONTROL_BREAK:
+ DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
ourstatus->value.sig = TARGET_SIGNAL_INT;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case EXCEPTION_SINGLE_STEP:
- DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
break;
+ case EXCEPTION_ILLEGAL_INSTRUCTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
+ case EXCEPTION_PRIV_INSTRUCTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
+ case EXCEPTION_NONCONTINUABLE_EXCEPTION:
+ DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
+ ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ break;
default:
- /* This may be a structured exception handling exception. In
- that case, we want to let the program try to handle it, and
- only break if we see the exception a second time.
if (current_event.u.Exception.dwFirstChance)
-
return 0;
-*/
-
- printf_unfiltered ("gdb: unknown target exception 0x%08x at 0x%08x\n",
+ printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
current_event.u.Exception.ExceptionRecord.ExceptionCode,
- current_event.u.Exception.ExceptionRecord.ExceptionAddress);
+ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
}
exception_count++;
+ last_sig = ourstatus->value.sig;
return 1;
}
/* Resume all artificially suspended threads if we are continuing
execution */
static BOOL
-child_continue (int id)
+child_continue (DWORD continue_status, int id)
{
int i;
thread_info *th;
BOOL res;
- DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=%d, DBG_CONTINUE);\n",
- current_event.dwProcessId, current_event.dwThreadId));
+ DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
+ current_event.dwProcessId, current_event.dwThreadId,
+ continue_status == DBG_CONTINUE ?
+ "DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
res = ContinueDebugEvent (current_event.dwProcessId,
current_event.dwThreadId,
continue_status);
continue_status = 0;
if (res)
for (th = &thread_head; (th = th->next) != NULL;)
- if (((id == -1) || (id == th->id)) && th->suspend_count)
+ if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
{
+
for (i = 0; i < th->suspend_count; i++)
(void) ResumeThread (th->h);
th->suspend_count = 0;
+ if (debug_registers_changed)
+ {
+ /* Only change the value of the debug reisters */
+ 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 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
}
+ debug_registers_changed = 0;
return res;
}
+/* Get the next event from the child. Return 1 if the event requires
+ handling by WFI (or whatever).
+ */
static int
-get_child_debug_event (int pid, struct target_waitstatus *ourstatus,
- DWORD *event_code, int *retval)
+get_child_debug_event (int pid, struct target_waitstatus *ourstatus)
{
BOOL debug_event;
- int breakout = 1;
+ DWORD continue_status, event_code;
+ thread_info *th = NULL;
+ static thread_info dummy_thread_info;
+ int retval = 0;
- if (!(debug_event = WaitForDebugEvent (¤t_event, 20)))
- {
- breakout = *retval = *event_code = 0;
- goto out;
- }
+ last_sig = TARGET_SIGNAL_0;
+
+ if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
+ goto out;
event_count++;
continue_status = DBG_CONTINUE;
- *retval = 0;
- switch (*event_code = current_event.dwDebugEventCode)
+ event_code = current_event.dwDebugEventCode;
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+
+ switch (event_code)
{
case CREATE_THREAD_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_THREAD_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
/* Record the existence of this thread */
- child_add_thread (current_event.dwThreadId,
- current_event.u.CreateThread.hThread);
+ th = child_add_thread (current_event.dwThreadId,
+ current_event.u.CreateThread.hThread);
if (info_verbose)
printf_unfiltered ("[New %s]\n",
- target_pid_to_str (current_event.dwThreadId));
+ target_pid_to_str (
+ pid_to_ptid (current_event.dwThreadId)));
+ retval = current_event.dwThreadId;
break;
case EXIT_THREAD_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_THREAD_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
child_delete_thread (current_event.dwThreadId);
+ th = &dummy_thread_info;
break;
case CREATE_PROCESS_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_PROCESS_DEBUG_EVENT"));
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_PROCESS_DEBUG_EVENT"));
+ CloseHandle (current_event.u.CreateProcessInfo.hFile);
+ if (++saw_create != 1)
+ {
+ CloseHandle (current_event.u.CreateProcessInfo.hProcess);
+ break;
+ }
- main_thread_id = inferior_pid = current_event.dwThreadId;
+ current_process_handle = current_event.u.CreateProcessInfo.hProcess;
+ main_thread_id = current_event.dwThreadId;
/* Add the main thread */
- current_thread = child_add_thread (inferior_pid,
- current_event.u.CreateProcessInfo.hThread);
+#if 0
+ th = child_add_thread (current_event.dwProcessId,
+ current_event.u.CreateProcessInfo.hProcess);
+#endif
+ th = child_add_thread (main_thread_id,
+ current_event.u.CreateProcessInfo.hThread);
+ retval = ourstatus->value.related_pid = current_event.dwThreadId;
break;
case EXIT_PROCESS_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_PROCESS_DEBUG_EVENT"));
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_PROCESS_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
CloseHandle (current_process_handle);
- *retval = current_event.dwProcessId;
- goto out;
+ retval = main_thread_id;
+ break;
case LOAD_DLL_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "LOAD_DLL_DEBUG_EVENT"));
- catch_errors (handle_load_dll, NULL, "", RETURN_MASK_ALL);
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "LOAD_DLL_DEBUG_EVENT"));
+ CloseHandle (current_event.u.LoadDll.hFile);
+ if (saw_create != 1)
+ break;
+ catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
registers_changed (); /* mark all regs invalid */
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.integer = 0;
+ retval = main_thread_id;
+ re_enable_breakpoints_in_shlibs ();
break;
case UNLOAD_DLL_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "UNLOAD_DLL_DEBUG_EVENT"));
- break; /* FIXME: don't know what to do here */
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "UNLOAD_DLL_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
+ catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
+ registers_changed (); /* mark all regs invalid */
+ /* ourstatus->kind = TARGET_WAITKIND_UNLOADED;
+ does not exist yet. */
+ break;
case EXCEPTION_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXCEPTION_DEBUG_EVENT"));
- if (handle_exception (ourstatus)) /* sets continue_status */
- {
- *retval = current_event.dwThreadId;
- goto out;
- }
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXCEPTION_DEBUG_EVENT"));
+ if (saw_create != 1)
+ break;
+ if (handle_exception (ourstatus))
+ retval = current_event.dwThreadId;
break;
- case OUTPUT_DEBUG_STRING_EVENT:
+ case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "OUTPUT_DEBUG_STRING_EVENT"));
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "OUTPUT_DEBUG_STRING_EVENT"));
+ if (saw_create != 1)
+ break;
if (handle_output_debug_string (ourstatus))
- {
- *retval = main_thread_id;
- goto out;
- }
+ retval = main_thread_id;
break;
+
default:
- printf_unfiltered ("gdb: kernel event for pid=%d tid=%d\n",
- current_event.dwProcessId,
- current_event.dwThreadId);
- printf_unfiltered (" unknown event code %d\n",
+ if (saw_create != 1)
+ break;
+ printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
+ (DWORD) current_event.dwProcessId,
+ (DWORD) current_event.dwThreadId);
+ printf_unfiltered (" unknown event code %ld\n",
current_event.dwDebugEventCode);
break;
}
- breakout = 0;
- CHECK (child_continue (-1));
- continue_status = 0;
+ if (!retval || saw_create != 1)
+ CHECK (child_continue (continue_status, -1));
+ else
+ {
+ current_thread = th ? : thread_rec (current_event.dwThreadId, TRUE);
+ inferior_ptid = pid_to_ptid (retval);
+ }
out:
- return breakout;
+ return retval;
}
-
/* Wait for interesting events to occur in the target process. */
-static int
-child_wait (int pid, struct target_waitstatus *ourstatus)
+static ptid_t
+child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
- DWORD event_code;
- int retval;
+ int pid = PIDGET (ptid);
/* We loop when we get a non-standard exception rather than return
with a SPURIOUS because resume can try and step or modify things,
while (1)
{
- if (continue_status != 0)
- CHECK (child_continue (-1));
- if (get_child_debug_event (pid, ourstatus, &event_code, &retval))
- return retval;
+ int retval = get_child_debug_event (pid, ourstatus);
+ if (retval)
+ return pid_to_ptid (retval);
else
{
int detach = 0;
}
}
-/* Attach to process PID, then initialize for debugging it. */
+static void
+do_initial_child_stuff (DWORD pid)
+{
+ extern int stop_after_trap;
+ int i;
+
+ last_sig = TARGET_SIGNAL_0;
+ event_count = 0;
+ exception_count = 0;
+ debug_registers_changed = 0;
+ debug_registers_used = 0;
+ for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
+ dr[i] = 0;
+ current_event.dwProcessId = pid;
+ memset (¤t_event, 0, sizeof (current_event));
+ push_target (&child_ops);
+ child_init_thread_list ();
+ disable_breakpoints_in_shlibs (1);
+ child_clear_solibs ();
+ clear_proceed_status ();
+ init_wait_for_inferior ();
+
+ target_terminal_init ();
+ target_terminal_inferior ();
+
+ while (1)
+ {
+ stop_after_trap = 1;
+ wait_for_inferior ();
+ if (stop_signal != TARGET_SIGNAL_TRAP)
+ resume (0, stop_signal);
+ else
+ break;
+ }
+ stop_after_trap = 0;
+ return;
+}
+
+/* Since Windows XP, detaching from a process is supported by Windows.
+ The following code tries loading the appropriate functions dynamically.
+ If loading these functions succeeds use them to actually detach from
+ the inferior process, otherwise behave as usual, pretending that
+ detach has worked. */
+static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
+static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
+
+static int
+has_detach_ability (void)
+{
+ static HMODULE kernel32 = NULL;
+
+ if (!kernel32)
+ kernel32 = LoadLibrary ("kernel32.dll");
+ if (kernel32)
+ {
+ if (!DebugSetProcessKillOnExit)
+ DebugSetProcessKillOnExit = GetProcAddress (kernel32,
+ "DebugSetProcessKillOnExit");
+ if (!DebugActiveProcessStop)
+ DebugActiveProcessStop = GetProcAddress (kernel32,
+ "DebugActiveProcessStop");
+ if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
+ return 1;
+ }
+ return 0;
+}
+
+/* Try to set or remove a user privilege to the current process. Return -1
+ if that fails, the previous setting of that privilege otherwise.
+
+ This code is copied from the Cygwin source code and rearranged to allow
+ dynamically loading of the needed symbols from advapi32 which is only
+ available on NT/2K/XP. */
+static int
+set_process_privilege (const char *privilege, BOOL enable)
+{
+ static HMODULE advapi32 = NULL;
+ static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
+ static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
+ static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
+ DWORD, PTOKEN_PRIVILEGES, PDWORD);
+
+ HANDLE token_hdl = NULL;
+ LUID restore_priv;
+ TOKEN_PRIVILEGES new_priv, orig_priv;
+ int ret = -1;
+ DWORD size;
+
+ if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
+ return 0;
+
+ if (!advapi32)
+ {
+ if (!(advapi32 = LoadLibrary ("advapi32.dll")))
+ goto out;
+ if (!OpenProcessToken)
+ OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
+ if (!LookupPrivilegeValue)
+ LookupPrivilegeValue = GetProcAddress (advapi32,
+ "LookupPrivilegeValueA");
+ if (!AdjustTokenPrivileges)
+ AdjustTokenPrivileges = GetProcAddress (advapi32,
+ "AdjustTokenPrivileges");
+ if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
+ {
+ advapi32 = NULL;
+ goto out;
+ }
+ }
+
+ if (!OpenProcessToken (GetCurrentProcess (),
+ TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
+ &token_hdl))
+ goto out;
+
+ if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
+ goto out;
+
+ new_priv.PrivilegeCount = 1;
+ new_priv.Privileges[0].Luid = restore_priv;
+ new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
+
+ if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
+ sizeof orig_priv, &orig_priv, &size))
+ goto out;
+#if 0
+ /* Disabled, otherwise every `attach' in an unprivileged user session
+ would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
+ child_attach(). */
+ /* AdjustTokenPrivileges returns TRUE even if the privilege could not
+ be enabled. GetLastError () returns an correct error code, though. */
+ if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
+ goto out;
+#endif
+
+ ret = orig_priv.Privileges[0].Attributes == SE_PRIVILEGE_ENABLED ? 1 : 0;
+
+out:
+ if (token_hdl)
+ CloseHandle (token_hdl);
+ return ret;
+}
+
+/* Attach to process PID, then initialize for debugging it. */
static void
-child_attach (args, from_tty)
- char *args;
- int from_tty;
+child_attach (char *args, int from_tty)
{
BOOL ok;
+ DWORD pid;
if (!args)
error_no_arg ("process-id to attach");
- current_event.dwProcessId = strtoul (args, 0, 0);
+ if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
+ {
+ printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
+ printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
+ }
+
+ pid = strtoul (args, 0, 0); /* Windows pid */
- ok = DebugActiveProcess (current_event.dwProcessId);
+ ok = DebugActiveProcess (pid);
+ saw_create = 0;
if (!ok)
- error ("Can't attach to process.");
+ {
+ /* Try fall back to Cygwin pid */
+ pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
- exception_count = 0;
- event_count = 0;
+ if (pid > 0)
+ ok = DebugActiveProcess (pid);
+
+ if (!ok)
+ error ("Can't attach to process.");
+ }
+
+ if (has_detach_ability ())
+ {
+ attach_flag = 1;
+ DebugSetProcessKillOnExit (FALSE);
+ }
if (from_tty)
{
if (exec_file)
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
- target_pid_to_str (current_event.dwProcessId));
+ target_pid_to_str (pid_to_ptid (pid)));
else
printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (current_event.dwProcessId));
+ target_pid_to_str (pid_to_ptid (pid)));
gdb_flush (gdb_stdout);
}
- push_target (&child_ops);
+ do_initial_child_stuff (pid);
+ target_terminal_ours ();
}
static void
-child_detach (args, from_tty)
- char *args;
- int from_tty;
+child_detach (char *args, int from_tty)
{
- if (from_tty)
+ int detached = 1;
+
+ if (has_detach_ability ())
+ {
+ delete_command (NULL, 0);
+ child_continue (DBG_CONTINUE, -1);
+ if (!DebugActiveProcessStop (current_event.dwProcessId))
+ {
+ error ("Can't detach process %lu (error %lu)",
+ current_event.dwProcessId, GetLastError ());
+ detached = 0;
+ }
+ DebugSetProcessKillOnExit (FALSE);
+ }
+ if (detached && from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
- printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
- target_pid_to_str (inferior_pid));
+ printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
+ current_event.dwProcessId);
gdb_flush (gdb_stdout);
}
- inferior_pid = 0;
+ inferior_ptid = null_ptid;
unpush_target (&child_ops);
}
/* Print status information about what we're accessing. */
static void
-child_files_info (ignore)
- struct target_ops *ignore;
+child_files_info (struct target_ops *ignore)
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
+ attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
}
-/* ARGSUSED */
static void
-child_open (arg, from_tty)
- char *arg;
- int from_tty;
+child_open (char *arg, int from_tty)
{
error ("Use the \"run\" command to start a Unix child process.");
}
-/* Start an inferior win32 child process and sets inferior_pid to its pid.
+/* Start an inferior win32 child process and sets inferior_ptid to its pid.
EXEC_FILE is the file to run.
ALLARGS is a string containing the arguments to the program.
ENV is the environment vector to pass. Errors reported with error(). */
static void
-child_create_inferior (exec_file, allargs, env)
- char *exec_file;
- char *allargs;
- char **env;
+child_create_inferior (char *exec_file, char *allargs, char **env)
{
- char real_path[MAXPATHLEN];
char *winenv;
char *temp;
int envlen;
int i;
STARTUPINFO si;
PROCESS_INFORMATION pi;
- struct target_waitstatus dummy;
BOOL ret;
DWORD flags;
char *args;
- DWORD event_code;
+ char real_path[MAXPATHLEN];
+ char *toexec;
+ char shell[MAX_PATH + 1]; /* Path to shell */
+ const char *sh;
+ int tty;
+ int ostdin, ostdout, ostderr;
if (!exec_file)
- {
- error ("No executable specified, use `target exec'.\n");
- }
+ error ("No executable specified, use `target exec'.\n");
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
- cygwin32_conv_to_win32_path (exec_file, real_path);
-
- flags = DEBUG_ONLY_THIS_PROCESS;
+ if (!useshell)
+ {
+ flags = DEBUG_ONLY_THIS_PROCESS;
+ cygwin_conv_to_win32_path (exec_file, real_path);
+ toexec = real_path;
+ }
+ else
+ {
+ char *newallargs;
+ sh = getenv ("SHELL");
+ if (!sh)
+ sh = "/bin/sh";
+ cygwin_conv_to_win32_path (sh, shell);
+ newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
+ + strlen (allargs) + 2);
+ sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
+ allargs = newallargs;
+ toexec = shell;
+ flags = DEBUG_PROCESS;
+ }
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
if (new_console)
flags |= CREATE_NEW_CONSOLE;
- args = alloca (strlen (real_path) + strlen (allargs) + 2);
-
- strcpy (args, real_path);
-
+ args = alloca (strlen (toexec) + strlen (allargs) + 2);
+ strcpy (args, toexec);
strcat (args, " ");
strcat (args, allargs);
/* Prepare the environment vars for CreateProcess. */
{
- /* This code use to assume all env vars were file names and would
+ /* This code used to assume all env vars were file names and would
translate them all to win32 style. That obviously doesn't work in the
general case. The current rule is that we only translate PATH.
We need to handle PATH because we're about to call CreateProcess and
len = strlen (conv_path_names[j]);
if (strncmp (conv_path_names[j], env[i], len) == 0)
{
- if (cygwin32_posix_path_list_p (env[i] + len))
+ if (cygwin_posix_path_list_p (env[i] + len))
envlen += len
- + cygwin32_posix_to_win32_path_list_buf_size (env[i] + len);
+ + cygwin_posix_to_win32_path_list_buf_size (env[i] + len);
else
envlen += strlen (env[i]) + 1;
break;
len = strlen (conv_path_names[j]);
if (strncmp (conv_path_names[j], env[i], len) == 0)
{
- if (cygwin32_posix_path_list_p (env[i] + len))
+ if (cygwin_posix_path_list_p (env[i] + len))
{
memcpy (temp, env[i], len);
- cygwin32_posix_to_win32_path_list (env[i] + len, temp + len);
+ cygwin_posix_to_win32_path_list (env[i] + len, temp + len);
}
else
strcpy (temp, env[i]);
*temp = 0;
}
+ if (!inferior_io_terminal)
+ tty = ostdin = ostdout = ostderr = -1;
+ else
+ {
+ tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
+ if (tty < 0)
+ {
+ print_sys_errmsg (inferior_io_terminal, errno);
+ ostdin = ostdout = ostderr = -1;
+ }
+ else
+ {
+ ostdin = dup (0);
+ ostdout = dup (1);
+ ostderr = dup (2);
+ dup2 (tty, 0);
+ dup2 (tty, 1);
+ dup2 (tty, 2);
+ }
+ }
+
ret = CreateProcess (0,
args, /* command line */
NULL, /* Security */
NULL, /* current directory */
&si,
&pi);
- if (!ret)
- error ("Error creating process %s, (error %d)\n", exec_file, GetLastError ());
+ if (tty >= 0)
+ {
+ close (tty);
+ dup2 (ostdin, 0);
+ dup2 (ostdout, 1);
+ dup2 (ostderr, 2);
+ close (ostdin);
+ close (ostdout);
+ close (ostderr);
+ }
- exception_count = 0;
- event_count = 0;
+ if (!ret)
+ error ("Error creating process %s, (error %d)\n", exec_file, (unsigned) GetLastError ());
- current_process_handle = pi.hProcess;
- current_event.dwProcessId = pi.dwProcessId;
- memset (¤t_event, 0, sizeof (current_event));
- inferior_pid = current_event.dwThreadId = pi.dwThreadId;
- push_target (&child_ops);
- child_init_thread_list ();
- init_wait_for_inferior ();
- clear_proceed_status ();
- target_terminal_init ();
- target_terminal_inferior ();
+ CloseHandle (pi.hThread);
+ CloseHandle (pi.hProcess);
- /* Run until process and threads are loaded */
- do
- get_child_debug_event (inferior_pid, &dummy, &event_code, &ret);
- while (event_code != EXCEPTION_DEBUG_EVENT);
+ if (useshell && shell[0] != '\0')
+ saw_create = -1;
+ else
+ saw_create = 0;
- SymSetOptions (SYMOPT_DEFERRED_LOADS);
- SymInitialize (current_process_handle, NULL, TRUE);
+ do_initial_child_stuff (pi.dwProcessId);
+ /* child_continue (DBG_CONTINUE, -1); */
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
}
static void
-child_mourn_inferior ()
+child_mourn_inferior (void)
{
- continue_status = DBG_CONTINUE;
- (void) child_continue (-1);
+ (void) child_continue (DBG_CONTINUE, -1);
+ i386_cleanup_dregs();
unpush_target (&child_ops);
generic_mourn_inferior ();
}
^C on the controlling terminal. */
static void
-child_stop ()
+child_stop (void)
{
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
int
child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
- int write, struct target_ops *target)
+ int write, struct mem_attrib *mem,
+ struct target_ops *target)
{
- DWORD done;
+ DWORD done = 0;
if (write)
{
- DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08x\n",
- len, memaddr));
- WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
- len, &done);
+ DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
+ len, (DWORD) memaddr));
+ if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
+ len, &done))
+ done = 0;
FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
}
else
{
- DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08x\n",
- len, memaddr));
- ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len,
- &done);
+ DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
+ len, (DWORD) memaddr));
+ if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
+ len, &done))
+ done = 0;
}
return done;
}
for (;;)
{
- continue_status = DBG_CONTINUE;
- if (!child_continue (-1))
+ if (!child_continue (DBG_CONTINUE, -1))
break;
if (!WaitForDebugEvent (¤t_event, INFINITE))
break;
}
void
-child_resume (int pid, int step, enum target_signal sig)
+child_resume (ptid_t ptid, int step, enum target_signal sig)
{
- int i;
thread_info *th;
+ DWORD continue_status = DBG_CONTINUE;
+
+ int pid = PIDGET (ptid);
+
+ if (sig != TARGET_SIGNAL_0)
+ {
+ if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
+ {
+ DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
+ }
+ else if (sig == last_sig)
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ else
+#if 0
+/* This code does not seem to work, because
+ the kernel does probably not consider changes in the ExceptionRecord
+ structure when passing the exception to the inferior.
+ Note that this seems possible in the exception handler itself. */
+ {
+ int i;
+ for (i = 0; xlate[i].them != -1; i++)
+ if (xlate[i].us == sig)
+ {
+ current_event.u.Exception.ExceptionRecord.ExceptionCode =
+ xlate[i].them;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ }
+ if (continue_status == DBG_CONTINUE)
+ {
+ DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
+ }
+ }
+#endif
+ DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
+ last_sig));
+ }
+
+ last_sig = TARGET_SIGNAL_0;
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
pid, step, sig));
/* Get context for currently selected thread */
th = thread_rec (current_event.dwThreadId, FALSE);
- if (step)
+ if (th)
{
-#ifdef i386
- /* Single step by setting t bit */
- child_fetch_inferior_registers (PS_REGNUM);
- th->context.EFlags |= FLAG_TRACE_BIT;
-#endif
- }
+ if (step)
+ {
+ /* Single step by setting t bit */
+ child_fetch_inferior_registers (PS_REGNUM);
+ th->context.EFlags |= FLAG_TRACE_BIT;
+ }
- if (th->context.ContextFlags)
- {
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
+ 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 = dr[6];
+ FIXME: should we set dr6 also ?? */
+ th->context.Dr7 = dr[7];
+ }
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
}
/* Allow continuing with the same signal that interrupted us.
Otherwise complain. */
- child_continue (pid);
+ child_continue (continue_status, pid);
}
static void
-child_prepare_to_store ()
+child_prepare_to_store (void)
{
/* Do nothing, since we can store individual regs */
}
static int
-child_can_run ()
+child_can_run (void)
{
return 1;
}
static void
-child_close ()
+child_close (int x)
{
- DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
+ DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n",
+ PIDGET (inferior_ptid)));
}
struct target_ops child_ops;
child_ops.to_terminal_inferior = terminal_inferior;
child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
child_ops.to_terminal_ours = terminal_ours;
+ child_ops.to_terminal_save_ours = terminal_save_ours;
child_ops.to_terminal_info = child_terminal_info;
child_ops.to_kill = child_kill_inferior;
- child_ops.to_load = 0;
- child_ops.to_lookup_symbol = 0;
child_ops.to_create_inferior = child_create_inferior;
child_ops.to_mourn_inferior = child_mourn_inferior;
child_ops.to_can_run = child_can_run;
- child_ops.to_notice_signals = 0;
child_ops.to_thread_alive = win32_child_thread_alive;
child_ops.to_pid_to_str = cygwin_pid_to_str;
child_ops.to_stop = child_stop;
child_ops.to_stratum = process_stratum;
- child_ops.DONT_USE = 0;
child_ops.to_has_all_memory = 1;
child_ops.to_has_memory = 1;
child_ops.to_has_stack = 1;
child_ops.to_has_registers = 1;
child_ops.to_has_execution = 1;
- child_ops.to_sections = 0;
- child_ops.to_sections_end = 0;
child_ops.to_magic = OPS_MAGIC;
}
void
-_initialize_inftarg ()
+_initialize_win32_nat (void)
{
struct cmd_list_element *c;
+
init_child_ops ();
- add_show_from_set
- (add_set_cmd ("new-console", class_support, var_boolean,
- (char *) &new_console,
- "Set creation of new console when creating child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("new-group", class_support, var_boolean,
- (char *) &new_group,
- "Set creation of new group when creating child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugexec", class_support, var_boolean,
- (char *) &debug_exec,
- "Set whether to display execution in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugevents", class_support, var_boolean,
- (char *) &debug_events,
- "Set whether to display kernel events in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugmemory", class_support, var_boolean,
- (char *) &debug_memory,
- "Set whether to display memory accesses in child process.",
- &setlist),
- &showlist);
-
- add_show_from_set
- (add_set_cmd ("debugexceptions", class_support, var_boolean,
- (char *) &debug_exceptions,
+ c = add_com ("dll-symbols", class_files, dll_symbol_command,
+ "Load dll library symbols from FILE.");
+ set_cmd_completer (c, filename_completer);
+
+ add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
+
+ add_show_from_set (add_set_cmd ("shell", class_support, var_boolean,
+ (char *) &useshell,
+ "Set use of shell to start subprocess.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("new-console", class_support, var_boolean,
+ (char *) &new_console,
+ "Set creation of new console when creating child process.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("new-group", class_support, var_boolean,
+ (char *) &new_group,
+ "Set creation of new group when creating child process.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("debugexec", class_support, var_boolean,
+ (char *) &debug_exec,
+ "Set whether to display execution in child process.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("debugevents", class_support, var_boolean,
+ (char *) &debug_events,
+ "Set whether to display kernel events in child process.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("debugmemory", class_support, var_boolean,
+ (char *) &debug_memory,
+ "Set whether to display memory accesses in child process.",
+ &setlist),
+ &showlist);
+
+ add_show_from_set (add_set_cmd ("debugexceptions", class_support, var_boolean,
+ (char *) &debug_exceptions,
"Set whether to display kernel exceptions in child process.",
- &setlist),
- &showlist);
+ &setlist),
+ &showlist);
+
+ add_info ("dll", info_dll_command, "Status of loaded DLLs.");
+ add_info_alias ("sharedlibrary", "dll", 1);
+
+ add_prefix_cmd ("w32", class_info, info_w32_command,
+ "Print information specific to Win32 debugging.",
+ &info_w32_cmdlist, "info w32 ", 0, &infolist);
+
+ add_cmd ("selector", class_info, display_selectors,
+ "Display selectors infos.",
+ &info_w32_cmdlist);
add_target (&child_ops);
}
+/* Hardware watchpoint support, adapted from go32-nat.c code. */
+
+/* Pass the address ADDR to the inferior in the I'th debug register.
+ Here we just store the address in dr array, the registers will be
+ actually set up when child_continue is called. */
+void
+cygwin_set_dr (int i, CORE_ADDR addr)
+{
+ if (i < 0 || i > 3)
+ internal_error (__FILE__, __LINE__,
+ "Invalid register %d in cygwin_set_dr.\n", i);
+ dr[i] = (unsigned) addr;
+ debug_registers_changed = 1;
+ debug_registers_used = 1;
+}
+
+/* Pass the value VAL to the inferior in the DR7 debug control
+ register. Here we just store the address in D_REGS, the watchpoint
+ will be actually set up in child_wait. */
+void
+cygwin_set_dr7 (unsigned val)
+{
+ dr[7] = val;
+ debug_registers_changed = 1;
+ debug_registers_used = 1;
+}
+
+/* Get the value of the DR6 debug status register from the inferior.
+ Here we just return the value stored in dr[6]
+ by the last call to thread_rec for current_event.dwThreadId id. */
+unsigned
+cygwin_get_dr6 (void)
+{
+ return dr[6];
+}
+
+
/* Determine if the thread referenced by "pid" is alive
by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
it means that the pid has died. Otherwise it is assumed to be alive. */
static int
-win32_child_thread_alive (int pid)
+win32_child_thread_alive (ptid_t ptid)
{
+ int pid = PIDGET (ptid);
+
return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
FALSE : TRUE;
}
/* Convert pid to printable format. */
char *
-cygwin_pid_to_str (int pid)
+cygwin_pid_to_str (ptid_t ptid)
{
static char buf[80];
- if (pid == current_event.dwProcessId)
+ int pid = PIDGET (ptid);
+
+ if ((DWORD) pid == current_event.dwProcessId)
sprintf (buf, "process %d", pid);
else
- sprintf (buf, "thread %d.0x%x", current_event.dwProcessId, pid);
+ sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
return buf;
}
-static LPVOID __stdcall
-sfta(HANDLE h, DWORD d)
+static int
+core_dll_symbols_add (char *dll_name, DWORD base_addr)
{
- return NULL;
+ struct objfile *objfile;
+ char *objfile_basename;
+ const char *dll_basename;
+
+ if (!(dll_basename = strrchr (dll_name, '/')))
+ dll_basename = dll_name;
+ else
+ dll_basename++;
+
+ ALL_OBJFILES (objfile)
+ {
+ objfile_basename = strrchr (objfile->name, '/');
+
+ if (objfile_basename &&
+ strcmp (dll_basename, objfile_basename + 1) == 0)
+ {
+ printf_unfiltered ("%08lx:%s (symbols previously loaded)\n",
+ base_addr, dll_name);
+ goto out;
+ }
+ }
+
+ register_loaded_dll (dll_name, base_addr + 0x1000);
+ solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000);
+
+out:
+ return 1;
}
-static DWORD __stdcall
-sgmb(HANDLE h, DWORD d)
+typedef struct
{
-#if 0
- return 4;
-#else
- return SymGetModuleBase (h, d) ?: 4;
-#endif
+ struct target_ops *target;
+ bfd_vma addr;
+} map_code_section_args;
+
+static void
+map_single_dll_code_section (bfd * abfd, asection * sect, void *obj)
+{
+ int old;
+ int update_coreops;
+ struct section_table *new_target_sect_ptr;
+
+ map_code_section_args *args = (map_code_section_args *) obj;
+ struct target_ops *target = args->target;
+ if (sect->flags & SEC_CODE)
+ {
+ update_coreops = core_ops.to_sections == target->to_sections;
+
+ if (target->to_sections)
+ {
+ old = target->to_sections_end - target->to_sections;
+ target->to_sections = (struct section_table *)
+ xrealloc ((char *) target->to_sections,
+ (sizeof (struct section_table)) * (1 + old));
+ }
+ else
+ {
+ old = 0;
+ target->to_sections = (struct section_table *)
+ xmalloc ((sizeof (struct section_table)));
+ }
+ target->to_sections_end = target->to_sections + (1 + old);
+
+ /* Update the to_sections field in the core_ops structure
+ if needed. */
+ if (update_coreops)
+ {
+ core_ops.to_sections = target->to_sections;
+ core_ops.to_sections_end = target->to_sections_end;
+ }
+ new_target_sect_ptr = target->to_sections + old;
+ new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
+ new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
+ bfd_section_size (abfd, sect);;
+ new_target_sect_ptr->the_bfd_section = sect;
+ new_target_sect_ptr->bfd = abfd;
+ }
}
-CORE_ADDR
-child_frame_chain(struct frame_info *f)
+static int
+dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
{
- STACKFRAME *sf = (STACKFRAME *) f->extra_info;
- if (!StackWalk (IMAGE_FILE_MACHINE_I386, current_process_handle,
- current_thread->h, sf, NULL, NULL, SymFunctionTableAccess, sgmb, NULL) ||
- !sf->AddrReturn.Offset)
+ bfd *dll_bfd;
+ map_code_section_args map_args;
+ asection *lowest_sect;
+ char *name;
+ if (dll_name == NULL || target == NULL)
return 0;
- return sf->AddrFrame.Offset;
+ name = xstrdup (dll_name);
+ dll_bfd = bfd_openr (name, "pei-i386");
+ if (dll_bfd == NULL)
+ return 0;
+
+ if (bfd_check_format (dll_bfd, bfd_object))
+ {
+ lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
+ if (lowest_sect == NULL)
+ return 0;
+ map_args.target = target;
+ map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
+
+ bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
+ }
+
+ return 1;
}
-CORE_ADDR
-child_frame_saved_pc(struct frame_info *f)
+static void
+core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj)
{
- STACKFRAME *sf = (STACKFRAME *) f->extra_info;
- return sf->AddrReturn.Offset;
+ struct target_ops *target = (struct target_ops *) obj;
+
+ DWORD base_addr;
+
+ int dll_name_size;
+ char *dll_name = NULL;
+ char *buf = NULL;
+ struct win32_pstatus *pstatus;
+ char *p;
+
+ if (strncmp (sect->name, ".module", 7))
+ return;
+
+ buf = (char *) xmalloc (sect->_raw_size + 1);
+ if (!buf)
+ {
+ printf_unfiltered ("memory allocation failed for %s\n", sect->name);
+ goto out;
+ }
+ if (!bfd_get_section_contents (abfd, sect, buf, 0, sect->_raw_size))
+ goto out;
+
+ pstatus = (struct win32_pstatus *) buf;
+
+ memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
+ dll_name_size = pstatus->data.module_info.module_name_size;
+ if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > sect->_raw_size)
+ goto out;
+
+ dll_name = (char *) xmalloc (dll_name_size + 1);
+ if (!dll_name)
+ {
+ printf_unfiltered ("memory allocation failed for %s\n", sect->name);
+ goto out;
+ }
+ strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size);
+
+ while ((p = strchr (dll_name, '\\')))
+ *p = '/';
+
+ if (!core_dll_symbols_add (dll_name, (DWORD) base_addr))
+ printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name);
+
+ if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target))
+ printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
+
+out:
+ if (buf)
+ xfree (buf);
+ if (dll_name)
+ xfree (dll_name);
+ return;
}
void
-child_init_frame(int leaf, struct frame_info *f)
+child_solib_add (char *filename, int from_tty, struct target_ops *target,
+ int readsyms)
{
- STACKFRAME *sf;
-
- if (f->next && f->next->extra_info)
- f->extra_info = f->next->extra_info;
- else if (f->prev && f->prev->extra_info)
- f->extra_info = f->prev->extra_info;
+ if (!readsyms)
+ return;
+ if (core_bfd)
+ {
+ child_clear_solibs ();
+ bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target);
+ }
else
{
- sf = (STACKFRAME *) frame_obstack_alloc (sizeof (*sf));
- f->extra_info = (struct frame_extra_info *) sf;
- memset (sf, 0, sizeof(*sf));
- sf->AddrPC.Offset = f->pc;
- sf->AddrPC.Mode = AddrModeFlat;
- sf->AddrStack.Offset = current_thread->context.Esp;
- sf->AddrStack.Mode = AddrModeFlat;
- sf->AddrFrame.Offset = f->frame;
- sf->AddrFrame.Mode = AddrModeFlat;
+ if (solib_end && solib_end->name)
+ solib_end->objfile = solib_symbols_add (solib_end->name, from_tty,
+ solib_end->load_addr);
+ }
+}
+
+static void
+fetch_elf_core_registers (char *core_reg_sect,
+ unsigned core_reg_size,
+ int which,
+ CORE_ADDR reg_addr)
+{
+ int r;
+ if (core_reg_size < sizeof (CONTEXT))
+ {
+ error ("Core file register section too small (%u bytes).", core_reg_size);
+ return;
+ }
+ for (r = 0; r < NUM_REGS; r++)
+ supply_register (r, core_reg_sect + mappings[r]);
+}
+
+static struct core_fns win32_elf_core_fns =
+{
+ bfd_target_elf_flavour,
+ default_check_format,
+ default_core_sniffer,
+ fetch_elf_core_registers,
+ NULL
+};
+
+void
+_initialize_core_win32 (void)
+{
+ add_core_fns (&win32_elf_core_fns);
+}
+
+void
+_initialize_check_for_gdb_ini (void)
+{
+ char *homedir;
+ if (inhibit_gdbinit)
+ return;
+
+ homedir = getenv ("HOME");
+ if (homedir)
+ {
+ char *p;
+ char *oldini = (char *) alloca (strlen (homedir) +
+ sizeof ("/gdb.ini"));
+ strcpy (oldini, homedir);
+ p = strchr (oldini, '\0');
+ if (p > oldini && p[-1] != '/')
+ *p++ = '/';
+ strcpy (p, "gdb.ini");
+ if (access (oldini, 0) == 0)
+ {
+ int len = strlen (oldini);
+ char *newini = alloca (len + 1);
+ sprintf (newini, "%.*s.gdbinit",
+ (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
+ warning ("obsolete '%s' found. Rename to '%s'.", oldini, newini);
+ }
}
}
projects / deliverable / binutils-gdb.git / blobdiff