+++ /dev/null
-/* Target-vector operations for controlling win32 child processes, for GDB.
-
- Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-
- Contributed by Cygnus Solutions, A Red Hat Company.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* Originally by Steve Chamberlain, sac@cygnus.com */
-
-#include "defs.h"
-#include "frame.h" /* required by inferior.h */
-#include "inferior.h"
-#include "target.h"
-#include "exceptions.h"
-#include "gdbcore.h"
-#include "command.h"
-#include "completer.h"
-#include "regcache.h"
-#include "top.h"
-#include <signal.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <windows.h>
-#include <imagehlp.h>
-#ifdef __CYGWIN__
-#include <sys/cygwin.h>
-#endif
-#include <signal.h>
-
-#include "buildsym.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "gdb_obstack.h"
-#include "gdb_string.h"
-#include "gdbthread.h"
-#include "gdbcmd.h"
-#include <sys/param.h>
-#include <unistd.h>
-#include "exec.h"
-#include "solist.h"
-#include "solib.h"
-#include "xml-support.h"
-
-#include "i386-tdep.h"
-#include "i387-tdep.h"
-
-#include "win32-tdep.h"
-#include "win32-nat.h"
-
-static struct target_ops win32_ops;
-
-#ifdef __CYGWIN__
-/* The starting and ending address of the cygwin1.dll text segment. */
-static bfd_vma cygwin_load_start;
-static bfd_vma cygwin_load_end;
-#endif
-
-static int have_saved_context; /* True if we've saved context from a cygwin signal. */
-static CONTEXT saved_context; /* Containes the saved context from a cygwin signal. */
-
-/* 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
-enum
- {
- FLAG_TRACE_BIT = 0x100,
- CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
- };
-#endif
-#include <psapi.h>
-
-#ifndef CONTEXT_EXTENDED_REGISTERS
-/* This macro is only defined on ia32. It only makes sense on this target,
- so define it as zero if not already defined. */
-#define CONTEXT_EXTENDED_REGISTERS 0
-#endif
-
-#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
- | CONTEXT_EXTENDED_REGISTERS
-
-static unsigned dr[8];
-static int debug_registers_changed;
-static int debug_registers_used;
-#define DR6_CLEAR_VALUE 0xffff0ff0
-
-/* The string sent by cygwin when it processes a signal.
- FIXME: This should be in a cygwin include file. */
-#ifndef _CYGWIN_SIGNAL_STRING
-#define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
-#endif
-
-#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
-
-static void win32_stop (ptid_t);
-static int win32_win32_thread_alive (ptid_t);
-static void win32_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. */
-typedef struct thread_info_struct
- {
- struct thread_info_struct *next;
- DWORD id;
- HANDLE h;
- char *name;
- int suspended;
- int reload_context;
- CONTEXT context;
- STACKFRAME sf;
- }
-thread_info;
-
-static thread_info thread_head;
-
-/* The process and thread handles for the above context. */
-
-static DEBUG_EVENT current_event; /* The current debug event from
- 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 */
-
-/* Counts of things. */
-static int exception_count = 0;
-static int event_count = 0;
-static int saw_create;
-static int open_process_used = 0;
-
-/* User options. */
-static int new_console = 0;
-#ifdef __CYGWIN__
-static int cygwin_exceptions = 0;
-#endif
-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_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 offset
- in the win32 exception context vector.
-
- It also contains the bit mask needed to load the register in question.
-
- The contents of this table can only be computed by the units
- that provide CPU-specific support for Windows native debugging.
- These units should set the table by calling
- win32_set_context_register_offsets.
-
- One day we could read a reg, we could inspect the context we
- already have loaded, if it doesn't have the bit set that we need,
- we read that set of registers in using GetThreadContext. If the
- context already contains what we need, we just unpack it. Then to
- write a register, first we have to ensure that the context contains
- the other regs of the group, and then we copy the info in and set
- out bit. */
-
-static const int *mappings;
-
-/* This vector maps the target's idea of an exception (extracted
- from the DEBUG_EVENT structure) to GDB's idea. */
-
-struct xlate_exception
- {
- int them;
- enum target_signal us;
- };
-
-static const struct xlate_exception
- xlate[] =
-{
- {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
- {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
- {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}};
-
-/* Set the MAPPINGS static global to OFFSETS.
- See the description of MAPPINGS for more details. */
-
-void
-win32_set_context_register_offsets (const int *offsets)
-{
- mappings = offsets;
-}
-
-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 is not 0,
- then also retrieve the context for this thread. If GET_CONTEXT is
- negative, then don't suspend the thread. */
-static thread_info *
-thread_rec (DWORD id, int get_context)
-{
- thread_info *th;
-
- for (th = &thread_head; (th = th->next) != NULL;)
- if (th->id == id)
- {
- if (!th->suspended && get_context)
- {
- if (get_context > 0 && id != current_event.dwThreadId)
- {
- if (SuspendThread (th->h) == (DWORD) -1)
- {
- DWORD err = GetLastError ();
- warning (_("SuspendThread failed. (winerr %d)"),
- (int) err);
- return NULL;
- }
- th->suspended = 1;
- }
- else if (get_context < 0)
- th->suspended = -1;
- th->reload_context = 1;
- }
- return th;
- }
-
- return NULL;
-}
-
-/* Add a thread to the thread list. */
-static thread_info *
-win32_add_thread (ptid_t ptid, HANDLE h)
-{
- thread_info *th;
- DWORD id;
-
- gdb_assert (ptid_get_tid (ptid) != 0);
-
- id = ptid_get_tid (ptid);
-
- if ((th = thread_rec (id, FALSE)))
- return th;
-
- th = XZALLOC (thread_info);
- th->id = id;
- th->h = h;
- th->next = thread_head.next;
- thread_head.next = th;
- add_thread (ptid);
- /* 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;
- }
- return th;
-}
-
-/* Clear out any old thread list and reintialize it to a
- pristine state. */
-static void
-win32_init_thread_list (void)
-{
- thread_info *th = &thread_head;
-
- DEBUG_EVENTS (("gdb: win32_init_thread_list\n"));
- init_thread_list ();
- while (th->next != NULL)
- {
- thread_info *here = th->next;
- th->next = here->next;
- xfree (here);
- }
- thread_head.next = NULL;
-}
-
-/* Delete a thread from the list of threads */
-static void
-win32_delete_thread (ptid_t ptid)
-{
- thread_info *th;
- DWORD id;
-
- gdb_assert (ptid_get_tid (ptid) != 0);
-
- id = ptid_get_tid (ptid);
-
- if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
- delete_thread (ptid);
-
- for (th = &thread_head;
- th->next != NULL && th->next->id != id;
- th = th->next)
- continue;
-
- if (th->next != NULL)
- {
- thread_info *here = th->next;
- th->next = here->next;
- xfree (here);
- }
-}
-
-static void
-do_win32_fetch_inferior_registers (struct regcache *regcache, int r)
-{
- char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- long l;
-
- if (!current_thread)
- return; /* Windows sometimes uses a non-existent thread id in its
- events */
-
- if (current_thread->reload_context)
- {
-#ifdef __COPY_CONTEXT_SIZE
- if (have_saved_context)
- {
- /* Lie about where the program actually is stopped since cygwin has informed us that
- we should consider the signal to have occurred at another location which is stored
- in "saved_context. */
- memcpy (¤t_thread->context, &saved_context, __COPY_CONTEXT_SIZE);
- have_saved_context = 0;
- }
- else
-#endif
- {
- thread_info *th = current_thread;
- th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
- GetThreadContext (th->h, &th->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->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;
- }
- }
- current_thread->reload_context = 0;
- }
-
- if (r == I387_FISEG_REGNUM (tdep))
- {
- l = *((long *) context_offset) & 0xffff;
- regcache_raw_supply (regcache, r, (char *) &l);
- }
- else if (r == I387_FOP_REGNUM (tdep))
- {
- l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
- regcache_raw_supply (regcache, r, (char *) &l);
- }
- else if (r >= 0)
- regcache_raw_supply (regcache, r, context_offset);
- else
- {
- for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
- do_win32_fetch_inferior_registers (regcache, r);
- }
-}
-
-static void
-win32_fetch_inferior_registers (struct regcache *regcache, int r)
-{
- current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
- /* Check if current_thread exists. Windows sometimes uses a non-existent
- thread id in its events */
- if (current_thread)
- do_win32_fetch_inferior_registers (regcache, r);
-}
-
-static void
-do_win32_store_inferior_registers (const struct regcache *regcache, int r)
-{
- if (!current_thread)
- /* Windows sometimes uses a non-existent thread id in its events */;
- else if (r >= 0)
- regcache_raw_collect (regcache, r,
- ((char *) ¤t_thread->context) + mappings[r]);
- else
- {
- for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
- do_win32_store_inferior_registers (regcache, r);
- }
-}
-
-/* Store a new register value into the current thread context */
-static void
-win32_store_inferior_registers (struct regcache *regcache, int r)
-{
- current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
- /* Check if current_thread exists. Windows sometimes uses a non-existent
- thread id in its events */
- if (current_thread)
- do_win32_store_inferior_registers (regcache, r);
-}
-
-static int psapi_loaded = 0;
-static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD,
- LPDWORD);
-static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
- DWORD);
-static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR,
- DWORD);
-
-/* Get the name of a given module at at given base address. If base_address
- is zero return the first loaded module (which is always the name of the
- executable). */
-static int
-get_module_name (LPVOID base_address, char *dll_name_ret)
-{
- DWORD len;
- MODULEINFO mi;
- int i;
- HMODULE dh_buf[1];
- HMODULE *DllHandle = dh_buf; /* Set to temporary storage for initial query */
- DWORD cbNeeded;
-#ifdef __CYGWIN__
- char pathbuf[PATH_MAX + 1]; /* Temporary storage prior to converting to
- posix form */
-#else
- char *pathbuf = dll_name_ret; /* Just copy directly to passed-in arg */
-#endif
-
- /* If psapi_loaded < 0 either psapi.dll is not available or it does not contain
- the needed functions. */
- if (psapi_loaded <= 0)
- goto failed;
-
- cbNeeded = 0;
- /* Find size of buffer needed to handle list of modules loaded in inferior */
- if (!psapi_EnumProcessModules (current_process_handle, DllHandle,
- sizeof (HMODULE), &cbNeeded) || !cbNeeded)
- goto failed;
-
- /* Allocate correct amount of space for module list */
- DllHandle = (HMODULE *) alloca (cbNeeded);
- if (!DllHandle)
- goto failed;
-
- /* Get the list of modules */
- if (!psapi_EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
- &cbNeeded))
- goto failed;
-
- for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
- {
- /* Get information on this module */
- if (!psapi_GetModuleInformation (current_process_handle, DllHandle[i],
- &mi, sizeof (mi)))
- error (_("Can't get module info"));
-
- if (!base_address || mi.lpBaseOfDll == base_address)
- {
- /* Try to find the name of the given module */
- len = psapi_GetModuleFileNameExA (current_process_handle,
- DllHandle[i], pathbuf, MAX_PATH);
- if (len == 0)
- error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
-#ifdef __CYGWIN__
- /* Cygwin prefers that the path be in /x/y/z format */
- cygwin_conv_to_full_posix_path (pathbuf, dll_name_ret);
-#endif
- return 1; /* success */
- }
- }
-
-failed:
- dll_name_ret[0] = '\0';
- return 0; /* failure */
-}
-
-/* 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 lm_info
-{
- LPVOID load_addr;
-};
-
-static struct so_list 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)
- 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;
-}
-
-static struct so_list *
-win32_make_so (const char *name, LPVOID load_addr)
-{
- struct so_list *so;
- 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;
-
- 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);
- }
- }
-
- if (strcasecmp (buf, "ntdll.dll") == 0)
- {
- GetSystemDirectory (buf, sizeof (buf));
- strcat (buf, "\\ntdll.dll");
- }
- so = XZALLOC (struct so_list);
- so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
- so->lm_info->load_addr = load_addr;
- strcpy (so->so_original_name, name);
-#ifndef __CYGWIN__
- strcpy (so->so_name, buf);
-#else
- cygwin_conv_to_posix_path (buf, so->so_name);
- /* Record cygwin1.dll .text start/end. */
- p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
- if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
- {
- bfd *abfd;
- asection *text = NULL;
- CORE_ADDR text_vma;
-
- abfd = bfd_openr (so->so_name, "pei-i386");
-
- if (!abfd)
- return so;
-
- if (bfd_check_format (abfd, bfd_object))
- text = bfd_get_section_by_name (abfd, ".text");
-
- if (!text)
- {
- bfd_close (abfd);
- return so;
- }
-
- /* 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. */
- cygwin_load_start = load_addr + 0x1000;
- cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
-
- bfd_close (abfd);
- }
-#endif
-
- return so;
-}
-
-static char *
-get_image_name (HANDLE h, void *address, int unicode)
-{
- static char buf[(2 * MAX_PATH) + 1];
- DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
- char *address_ptr;
- int len = 0;
- char b[2];
- SIZE_T done;
-
- /* Attempt to read the name of the dll that was detected.
- This is documented to work only when actively debugging
- a program. It will not work for attached processes. */
- if (address == NULL)
- return NULL;
-
- /* 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 (void *dummy)
-{
- LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
- char dll_buf[MAX_PATH + 1];
- char *dll_name = NULL;
-
- dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
-
- if (!get_module_name (event->lpBaseOfDll, dll_buf))
- dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
-
- dll_name = dll_buf;
-
- if (*dll_name == '\0')
- dll_name = get_image_name (current_process_handle,
- event->lpImageName, event->fUnicode);
- if (!dll_name)
- return 1;
-
- solib_end->next = win32_make_so (dll_name, event->lpBaseOfDll);
- solib_end = solib_end->next;
-
- DEBUG_EVENTS (("gdb: Loading dll \"%s\" at 0x%lx.\n", solib_end->so_name,
- solib_end->lm_info->load_addr));
-
- return 1;
-}
-
-static void
-win32_free_so (struct so_list *so)
-{
- if (so->lm_info)
- xfree (so->lm_info);
- xfree (so);
-}
-
-static int
-handle_unload_dll (void *dummy)
-{
- LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
- struct so_list *so;
-
- for (so = &solib_start; so->next != NULL; so = so->next)
- if (so->next->lm_info->load_addr == lpBaseOfDll)
- {
- struct so_list *sodel = so->next;
- so->next = sodel->next;
- if (!so->next)
- solib_end = so;
- DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
-
- win32_free_so (sodel);
- solib_add (NULL, 0, NULL, auto_solib_add);
- return 1;
- }
-
- error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
-
- return 0;
-}
-
-/* Clear list of loaded DLLs. */
-static void
-win32_clear_solib (void)
-{
- solib_start.next = NULL;
- solib_end = &solib_start;
-}
-
-/* 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);
-}
-
-/* Handle DEBUG_STRING output from child process.
- Cygwin prepends its messages with a "cygwin:". Interpret this as
- a Cygwin signal. Otherwise just print the string as a warning. */
-static int
-handle_output_debug_string (struct target_waitstatus *ourstatus)
-{
- char *s = NULL;
- int retval = 0;
-
- if (!target_read_string
- ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
- &s, 1024, 0)
- || !s || !*s)
- /* nothing to do */;
- else if (strncmp (s, _CYGWIN_SIGNAL_STRING, sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
- {
-#ifdef __CYGWIN__
- if (strncmp (s, "cYg", 3) != 0)
-#endif
- warning (("%s"), s);
- }
-#ifdef __COPY_CONTEXT_SIZE
- else
- {
- /* Got a cygwin signal marker. A cygwin signal is followed by the signal number
- itself and then optionally followed by the thread id and address to saved context
- within the DLL. If these are supplied, then the given thread is assumed to have
- issued the signal and the context from the thread is assumed to be stored at the
- given address in the inferior. Tell gdb to treat this like a real signal. */
- char *p;
- int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
- int gotasig = target_signal_from_host (sig);
- ourstatus->value.sig = gotasig;
- if (gotasig)
- {
- LPCVOID x;
- DWORD n;
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
- retval = strtoul (p, &p, 0);
- if (!retval)
- retval = main_thread_id;
- else if ((x = (LPCVOID) strtoul (p, &p, 0))
- && ReadProcessMemory (current_process_handle, x,
- &saved_context, __COPY_CONTEXT_SIZE, &n)
- && n == __COPY_CONTEXT_SIZE)
- have_saved_context = 1;
- current_event.dwThreadId = retval;
- }
- }
-#endif
-
- if (s)
- xfree (s);
- return retval;
-}
-
-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, \
- current_event.u.Exception.ExceptionRecord.ExceptionAddress)
-
-static int
-handle_exception (struct target_waitstatus *ourstatus)
-{
- 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 (code)
- {
- case EXCEPTION_ACCESS_VIOLATION:
- DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
-#ifdef __CYGWIN__
- {
- /* See if the access violation happened within the cygwin DLL itself. Cygwin uses
- a kind of exception handling to deal with passed-in invalid addresses. gdb
- should not treat these as real SEGVs since they will be silently handled by
- cygwin. A real SEGV will (theoretically) be caught by cygwin later in the process
- and will be sent as a cygwin-specific-signal. So, ignore SEGVs if they show up
- within the text segment of the DLL itself. */
- char *fn;
- bfd_vma addr = (bfd_vma) (uintptr_t) current_event.u.Exception.
- ExceptionRecord.ExceptionAddress;
- if ((!cygwin_exceptions && (addr >= cygwin_load_start && addr < cygwin_load_end))
- || (find_pc_partial_function (addr, &fn, NULL, NULL)
- && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0))
- return 0;
- }
-#endif
- break;
- case STATUS_STACK_OVERFLOW:
- DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
- 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:
- DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
- break;
- case STATUS_INTEGER_DIVIDE_BY_ZERO:
- DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
- break;
- case STATUS_INTEGER_OVERFLOW:
- DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
- break;
- case EXCEPTION_BREAKPOINT:
- DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
- break;
- case DBG_CONTROL_C:
- 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;
- break;
- case EXCEPTION_SINGLE_STEP:
- 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:
- /* Treat unhandled first chance exceptions specially. */
- if (current_event.u.Exception.dwFirstChance)
- return -1;
- printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- current_event.u.Exception.ExceptionRecord.ExceptionAddress);
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- break;
- }
- exception_count++;
- last_sig = ourstatus->value.sig;
- return 1;
-}
-
-/* Resume all artificially suspended threads if we are continuing
- execution */
-static BOOL
-win32_continue (DWORD continue_status, int id)
-{
- int i;
- thread_info *th;
- BOOL res;
-
- 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"));
-
- for (th = &thread_head; (th = th->next) != NULL;)
- if ((id == -1 || id == (int) th->id)
- && th->suspended)
- {
- if (debug_registers_changed)
- {
- 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)
- {
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
- if (th->suspended > 0)
- (void) ResumeThread (th->h);
- th->suspended = 0;
- }
-
- res = ContinueDebugEvent (current_event.dwProcessId,
- current_event.dwThreadId,
- continue_status);
-
- debug_registers_changed = 0;
- return res;
-}
-
-/* Called in pathological case where Windows fails to send a
- CREATE_PROCESS_DEBUG_EVENT after an attach. */
-static DWORD
-fake_create_process (void)
-{
- current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
- current_event.dwProcessId);
- if (current_process_handle != NULL)
- open_process_used = 1;
- else
- {
- error (_("OpenProcess call failed, GetLastError = %lud\n"),
- GetLastError ());
- /* We can not debug anything in that case. */
- }
- main_thread_id = current_event.dwThreadId;
- current_thread = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
- current_event.dwThreadId),
- current_event.u.CreateThread.hThread);
- return main_thread_id;
-}
-
-static void
-win32_resume (ptid_t ptid, int step, enum target_signal sig)
-{
- thread_info *th;
- DWORD continue_status = DBG_CONTINUE;
-
- /* A specific PTID means `step only this thread id'. */
- int resume_all = ptid_equal (ptid, minus_one_ptid);
-
- /* If we're continuing all threads, it's the current inferior that
- should be handled specially. */
- if (resume_all)
- ptid = inferior_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: win32_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
- ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
-
- /* Get context for currently selected thread */
- th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
- if (th)
- {
- if (step)
- {
- /* Single step by setting t bit */
- win32_fetch_inferior_registers (get_current_regcache (),
- gdbarch_ps_regnum (current_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;
- }
- }
-
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
-
- if (resume_all)
- win32_continue (continue_status, -1);
- else
- win32_continue (continue_status, ptid_get_tid (ptid));
-}
-
-/* Get the next event from the child. Return 1 if the event requires
- handling by WFI (or whatever).
- */
-static int
-get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
-{
- BOOL debug_event;
- DWORD continue_status, event_code;
- thread_info *th;
- static thread_info dummy_thread_info;
- int retval = 0;
-
- last_sig = TARGET_SIGNAL_0;
-
- if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
- goto out;
-
- event_count++;
- continue_status = DBG_CONTINUE;
-
- event_code = current_event.dwDebugEventCode;
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- th = NULL;
- have_saved_context = 0;
-
- 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"));
- if (saw_create != 1)
- {
- struct inferior *inf;
- inf = find_inferior_pid (current_event.dwProcessId);
- if (!saw_create && inf->attach_flag)
- {
- /* Kludge around a Windows bug where first event is a create
- thread event. Caused when attached process does not have
- a main thread. */
- retval = fake_create_process ();
- if (retval)
- saw_create++;
- }
- break;
- }
- /* Record the existence of this thread */
- retval = current_event.dwThreadId;
- th = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
- current_event.dwThreadId),
- current_event.u.CreateThread.hThread);
- 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"));
- if (current_event.dwThreadId != main_thread_id)
- {
- win32_delete_thread (ptid_build (current_event.dwProcessId, 0,
- 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"));
- CloseHandle (current_event.u.CreateProcessInfo.hFile);
- if (++saw_create != 1)
- break;
-
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
- if (main_thread_id)
- win32_delete_thread (ptid_build (current_event.dwProcessId, 0,
- main_thread_id));
- main_thread_id = current_event.dwThreadId;
- /* Add the main thread */
- th = win32_add_thread (ptid_build (current_event.dwProcessId, 0,
- current_event.dwThreadId),
- current_event.u.CreateProcessInfo.hThread);
- retval = 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"));
- if (saw_create != 1)
- break;
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
- 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"));
- CloseHandle (current_event.u.LoadDll.hFile);
- if (saw_create != 1)
- break;
- catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
- ourstatus->kind = TARGET_WAITKIND_LOADED;
- ourstatus->value.integer = 0;
- retval = main_thread_id;
- 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"));
- if (saw_create != 1)
- break;
- catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
- ourstatus->kind = TARGET_WAITKIND_LOADED;
- ourstatus->value.integer = 0;
- retval = main_thread_id;
- 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 (saw_create != 1)
- break;
- switch (handle_exception (ourstatus))
- {
- case 0:
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
- break;
- case 1:
- retval = current_event.dwThreadId;
- break;
- case -1:
- last_sig = 1;
- continue_status = -1;
- break;
- }
- break;
-
- 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"));
- if (saw_create != 1)
- break;
- retval = handle_output_debug_string (ourstatus);
- break;
-
- default:
- 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;
- }
-
- if (!retval || saw_create != 1)
- {
- if (continue_status == -1)
- win32_resume (minus_one_ptid, 0, 1);
- else
- CHECK (win32_continue (continue_status, -1));
- }
- else
- {
- inferior_ptid = ptid_build (current_event.dwProcessId, 0,
- retval);
- current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
- }
-
-out:
- return retval;
-}
-
-/* Wait for interesting events to occur in the target process. */
-static ptid_t
-win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
-{
- int pid = -1;
-
- target_terminal_ours ();
-
- /* We loop when we get a non-standard exception rather than return
- with a SPURIOUS because resume can try and step or modify things,
- which needs a current_thread->h. But some of these exceptions mark
- the birth or death of threads, which mean that the current thread
- isn't necessarily what you think it is. */
-
- while (1)
- {
- int retval;
-
- /* Ignore CTRL+C signals while waiting for a debug event.
- FIXME: brobecker/2008-05-20: When the user presses CTRL+C while
- the inferior is running, both the inferior and GDB receive the
- associated signal. If the inferior receives the signal first
- and the delay until GDB receives that signal is sufficiently long,
- GDB can sometimes receive the SIGINT after we have unblocked
- the CTRL+C handler. This would lead to the debugger to stop
- prematurely while handling the new-thread event that comes
- with the handling of the SIGINT inside the inferior, and then
- stop again immediately when the user tries to resume the execution
- in the inferior. This is a classic race, and it would be nice
- to find a better solution to that problem. But in the meantime,
- the current approach already greatly mitigate this issue. */
- SetConsoleCtrlHandler (NULL, TRUE);
- retval = get_win32_debug_event (pid, ourstatus);
- SetConsoleCtrlHandler (NULL, FALSE);
-
- if (retval)
- return ptid_build (current_event.dwProcessId, 0, retval);
- else
- {
- int detach = 0;
-
- if (deprecated_ui_loop_hook != NULL)
- detach = deprecated_ui_loop_hook (0);
-
- if (detach)
- win32_kill_inferior ();
- }
- }
-}
-
-static void
-do_initial_win32_stuff (struct target_ops *ops, DWORD pid, int attaching)
-{
- extern int stop_after_trap;
- int i;
- struct inferior *inf;
- struct thread_info *tp;
-
- last_sig = TARGET_SIGNAL_0;
- event_count = 0;
- exception_count = 0;
- open_process_used = 0;
- debug_registers_changed = 0;
- debug_registers_used = 0;
- for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
- dr[i] = 0;
-#ifdef __CYGWIN__
- cygwin_load_start = cygwin_load_end = 0;
-#endif
- current_event.dwProcessId = pid;
- memset (¤t_event, 0, sizeof (current_event));
- push_target (ops);
- disable_breakpoints_in_shlibs ();
- win32_clear_solib ();
- clear_proceed_status ();
- init_wait_for_inferior ();
-
- inf = add_inferior (pid);
- inf->attach_flag = attaching;
-
- /* Make the new process the current inferior, so terminal handling
- can rely on it. When attaching, we don't know about any thread
- id here, but that's OK --- nothing should be referencing the
- current thread until we report an event out of win32_wait. */
- inferior_ptid = pid_to_ptid (pid);
-
- terminal_init_inferior_with_pgrp (pid);
- target_terminal_inferior ();
-
- inf->stop_soon = STOP_QUIETLY;
- while (1)
- {
- stop_after_trap = 1;
- wait_for_inferior (0);
- tp = inferior_thread ();
- if (tp->stop_signal != TARGET_SIGNAL_TRAP)
- resume (0, tp->stop_signal);
- else
- break;
- }
-
- inf->stop_soon = NO_STOP_QUIETLY;
- 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 (*kernel32_DebugSetProcessKillOnExit)(BOOL);
-static BOOL WINAPI (*kernel32_DebugActiveProcessStop)(DWORD);
-
-static int
-has_detach_ability (void)
-{
- static HMODULE kernel32 = NULL;
-
- if (!kernel32)
- kernel32 = LoadLibrary ("kernel32.dll");
- if (kernel32)
- {
- if (!kernel32_DebugSetProcessKillOnExit)
- kernel32_DebugSetProcessKillOnExit =
- (void *) GetProcAddress (kernel32, "DebugSetProcessKillOnExit");
- if (!kernel32_DebugActiveProcessStop)
- kernel32_DebugActiveProcessStop =
- (void *) GetProcAddress (kernel32, "DebugActiveProcessStop");
- if (kernel32_DebugSetProcessKillOnExit
- && kernel32_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 =
- (void *) GetProcAddress (advapi32, "OpenProcessToken");
- if (!LookupPrivilegeValue)
- LookupPrivilegeValue =
- (void *) GetProcAddress (advapi32, "LookupPrivilegeValueA");
- if (!AdjustTokenPrivileges)
- AdjustTokenPrivileges =
- (void *) 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
- win32_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
-win32_attach (struct target_ops *ops, char *args, int from_tty)
-{
- BOOL ok;
- DWORD pid;
-
- if (!args)
- error_no_arg (_("process-id to attach"));
-
- 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 */
-
- win32_init_thread_list ();
- ok = DebugActiveProcess (pid);
- saw_create = 0;
-
-#ifdef __CYGWIN__
- if (!ok)
- {
- /* Try fall back to Cygwin pid */
- pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
-
- if (pid > 0)
- ok = DebugActiveProcess (pid);
- }
-#endif
-
- if (!ok)
- error (_("Can't attach to process."));
-
- if (has_detach_ability ())
- kernel32_DebugSetProcessKillOnExit (FALSE);
-
- if (from_tty)
- {
- char *exec_file = (char *) get_exec_file (0);
-
- if (exec_file)
- printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
- target_pid_to_str (pid_to_ptid (pid)));
- else
- printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (pid_to_ptid (pid)));
-
- gdb_flush (gdb_stdout);
- }
-
- do_initial_win32_stuff (ops, pid, 1);
- target_terminal_ours ();
-}
-
-static void
-win32_detach (struct target_ops *ops, char *args, int from_tty)
-{
- int detached = 1;
-
- if (has_detach_ability ())
- {
- ptid_t ptid = {-1};
- win32_resume (ptid, 0, TARGET_SIGNAL_0);
-
- if (!kernel32_DebugActiveProcessStop (current_event.dwProcessId))
- {
- error (_("Can't detach process %lu (error %lu)"),
- current_event.dwProcessId, GetLastError ());
- detached = 0;
- }
- kernel32_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, Pid %lu\n", exec_file,
- current_event.dwProcessId);
- gdb_flush (gdb_stdout);
- }
-
- inferior_ptid = null_ptid;
- detach_inferior (current_event.dwProcessId);
-
- unpush_target (ops);
-}
-
-static char *
-win32_pid_to_exec_file (int pid)
-{
- static char path[MAX_PATH + 1];
-
-#ifdef __CYGWIN__
- /* Try to find exe name as symlink target of /proc/<pid>/exe */
- int nchars;
- char procexe[sizeof ("/proc/4294967295/exe")];
- sprintf (procexe, "/proc/%u/exe", pid);
- nchars = readlink (procexe, path, sizeof(path));
- if (nchars > 0 && nchars < sizeof (path))
- {
- path[nchars] = '\0'; /* Got it */
- return path;
- }
-#endif
-
- /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
- of gdb, or we're trying to debug a non-Cygwin windows executable. */
- if (!get_module_name (0, path))
- path[0] = '\0';
-
- return path;
-}
-
-/* Print status information about what we're accessing. */
-
-static void
-win32_files_info (struct target_ops *ignore)
-{
- struct inferior *inf = current_inferior ();
-
- printf_unfiltered ("\tUsing the running image of %s %s.\n",
- inf->attach_flag ? "attached" : "child",
- target_pid_to_str (inferior_ptid));
-}
-
-static void
-win32_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_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
-win32_create_inferior (struct target_ops *ops, char *exec_file,
- char *allargs, char **in_env, int from_tty)
-{
- STARTUPINFO si;
- PROCESS_INFORMATION pi;
- BOOL ret;
- DWORD flags;
- char *args;
- char real_path[MAXPATHLEN];
- char *toexec;
- char shell[MAX_PATH + 1]; /* Path to shell */
- const char *sh;
- int tty;
- int ostdin, ostdout, ostderr;
- const char *inferior_io_terminal = get_inferior_io_terminal ();
-
- if (!exec_file)
- error (_("No executable specified, use `target exec'."));
-
- memset (&si, 0, sizeof (si));
- si.cb = sizeof (si);
-
-#ifdef __CYGWIN__
- 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;
- }
-#else
- toexec = exec_file;
- flags = DEBUG_ONLY_THIS_PROCESS;
-#endif
-
- if (new_group)
- flags |= CREATE_NEW_PROCESS_GROUP;
-
- if (new_console)
- flags |= CREATE_NEW_CONSOLE;
-
- args = alloca (strlen (toexec) + strlen (allargs) + 2);
- strcpy (args, toexec);
- strcat (args, " ");
- strcat (args, allargs);
-
-#ifdef __CYGWIN__
- /* Prepare the environment vars for CreateProcess. */
- cygwin_internal (CW_SYNC_WINENV);
-
- 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);
- }
- }
-#endif
-
- win32_init_thread_list ();
- ret = CreateProcess (0,
- args, /* command line */
- NULL, /* Security */
- NULL, /* thread */
- TRUE, /* inherit handles */
- flags, /* start flags */
- NULL, /* environment */
- NULL, /* current directory */
- &si,
- &pi);
-
-#ifdef __CYGWIN__
- if (tty >= 0)
- {
- close (tty);
- dup2 (ostdin, 0);
- dup2 (ostdout, 1);
- dup2 (ostderr, 2);
- close (ostdin);
- close (ostdout);
- close (ostderr);
- }
-#endif
-
- if (!ret)
- error (_("Error creating process %s, (error %d)."),
- exec_file, (unsigned) GetLastError ());
-
- CloseHandle (pi.hThread);
- CloseHandle (pi.hProcess);
-
- if (useshell && shell[0] != '\0')
- saw_create = -1;
- else
- saw_create = 0;
-
- do_initial_win32_stuff (ops, pi.dwProcessId, 0);
-
- /* win32_continue (DBG_CONTINUE, -1); */
-}
-
-static void
-win32_mourn_inferior (struct target_ops *ops)
-{
- (void) win32_continue (DBG_CONTINUE, -1);
- i386_cleanup_dregs();
- if (open_process_used)
- {
- CHECK (CloseHandle (current_process_handle));
- open_process_used = 0;
- }
- unpush_target (ops);
- generic_mourn_inferior ();
-}
-
-/* Send a SIGINT to the process group. This acts just like the user typed a
- ^C on the controlling terminal. */
-
-static void
-win32_stop (ptid_t ptid)
-{
- DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
- CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
- registers_changed (); /* refresh register state */
-}
-
-static int
-win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
- int write, struct mem_attrib *mem,
- struct target_ops *target)
-{
- SIZE_T done = 0;
- if (write)
- {
- DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) (uintptr_t) memaddr));
- if (!WriteProcessMemory (current_process_handle,
- (LPVOID) (uintptr_t) memaddr, our,
- len, &done))
- done = 0;
- FlushInstructionCache (current_process_handle,
- (LPCVOID) (uintptr_t) memaddr, len);
- }
- else
- {
- DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) (uintptr_t) memaddr));
- if (!ReadProcessMemory (current_process_handle,
- (LPCVOID) (uintptr_t) memaddr, our,
- len, &done))
- done = 0;
- }
- return done;
-}
-
-static void
-win32_kill_inferior (void)
-{
- CHECK (TerminateProcess (current_process_handle, 0));
-
- for (;;)
- {
- if (!win32_continue (DBG_CONTINUE, -1))
- break;
- if (!WaitForDebugEvent (¤t_event, INFINITE))
- break;
- if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
- break;
- }
-
- target_mourn_inferior (); /* or just win32_mourn_inferior? */
-}
-
-static void
-win32_prepare_to_store (struct regcache *regcache)
-{
- /* Do nothing, since we can store individual regs */
-}
-
-static int
-win32_can_run (void)
-{
- return 1;
-}
-
-static void
-win32_close (int x)
-{
- DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
- PIDGET (inferior_ptid)));
-}
-
-/* Convert pid to printable format. */
-static char *
-win32_pid_to_str (ptid_t ptid)
-{
- static char buf[80];
-
- if (ptid_get_tid (ptid) != 0)
- {
- snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
- ptid_get_pid (ptid), ptid_get_tid (ptid));
- return buf;
- }
-
- return normal_pid_to_str (ptid);
-}
-
-static LONGEST
-win32_xfer_shared_libraries (struct target_ops *ops,
- enum target_object object, const char *annex,
- gdb_byte *readbuf, const gdb_byte *writebuf,
- ULONGEST offset, LONGEST len)
-{
- struct obstack obstack;
- const char *buf;
- LONGEST len_avail;
- struct so_list *so;
-
- if (writebuf)
- return -1;
-
- obstack_init (&obstack);
- obstack_grow_str (&obstack, "<library-list>\n");
- for (so = solib_start.next; so; so = so->next)
- win32_xfer_shared_library (so->so_name, (CORE_ADDR) so->lm_info->load_addr,
- &obstack);
- obstack_grow_str0 (&obstack, "</library-list>\n");
-
- buf = obstack_finish (&obstack);
- len_avail = strlen (buf);
- if (offset >= len_avail)
- return 0;
-
- if (len > len_avail - offset)
- len = len_avail - offset;
- memcpy (readbuf, buf + offset, len);
-
- obstack_free (&obstack, NULL);
- return len;
-}
-
-static LONGEST
-win32_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
-{
- switch (object)
- {
- case TARGET_OBJECT_MEMORY:
- if (readbuf)
- return (*ops->deprecated_xfer_memory) (offset, readbuf,
- len, 0/*read*/, NULL, ops);
- if (writebuf)
- return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
- len, 1/*write*/, NULL, ops);
- return -1;
-
- case TARGET_OBJECT_LIBRARIES:
- return win32_xfer_shared_libraries (ops, object, annex, readbuf,
- writebuf, offset, len);
-
- default:
- if (ops->beneath != NULL)
- return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
- readbuf, writebuf, offset, len);
- return -1;
- }
-}
-
-static void
-init_win32_ops (void)
-{
- win32_ops.to_shortname = "child";
- win32_ops.to_longname = "Win32 child process";
- win32_ops.to_doc = "Win32 child process (started by the \"run\" command).";
- win32_ops.to_open = win32_open;
- win32_ops.to_close = win32_close;
- win32_ops.to_attach = win32_attach;
- win32_ops.to_attach_no_wait = 1;
- win32_ops.to_detach = win32_detach;
- win32_ops.to_resume = win32_resume;
- win32_ops.to_wait = win32_wait;
- win32_ops.to_fetch_registers = win32_fetch_inferior_registers;
- win32_ops.to_store_registers = win32_store_inferior_registers;
- win32_ops.to_prepare_to_store = win32_prepare_to_store;
- win32_ops.deprecated_xfer_memory = win32_xfer_memory;
- win32_ops.to_xfer_partial = win32_xfer_partial;
- win32_ops.to_files_info = win32_files_info;
- win32_ops.to_insert_breakpoint = memory_insert_breakpoint;
- win32_ops.to_remove_breakpoint = memory_remove_breakpoint;
- win32_ops.to_terminal_init = terminal_init_inferior;
- win32_ops.to_terminal_inferior = terminal_inferior;
- win32_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- win32_ops.to_terminal_ours = terminal_ours;
- win32_ops.to_terminal_save_ours = terminal_save_ours;
- win32_ops.to_terminal_info = child_terminal_info;
- win32_ops.to_kill = win32_kill_inferior;
- win32_ops.to_create_inferior = win32_create_inferior;
- win32_ops.to_mourn_inferior = win32_mourn_inferior;
- win32_ops.to_can_run = win32_can_run;
- win32_ops.to_thread_alive = win32_win32_thread_alive;
- win32_ops.to_pid_to_str = win32_pid_to_str;
- win32_ops.to_stop = win32_stop;
- win32_ops.to_stratum = process_stratum;
- win32_ops.to_has_all_memory = 1;
- win32_ops.to_has_memory = 1;
- win32_ops.to_has_stack = 1;
- win32_ops.to_has_registers = 1;
- win32_ops.to_has_execution = 1;
- win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file;
- win32_ops.to_magic = OPS_MAGIC;
-}
-
-static void
-set_win32_aliases (char *argv0)
-{
- add_info_alias ("dll", "sharedlibrary", 1);
-}
-
-void
-_initialize_win32_nat (void)
-{
- struct cmd_list_element *c;
-
- init_win32_ops ();
-
- 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);
-
-#ifdef __CYGWIN__
- add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
-Set use of shell to start subprocess."), _("\
-Show use of shell to start subprocess."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("cygwin-exceptions", class_support, &cygwin_exceptions, _("\
-Break when an exception is detected in the Cygwin DLL itself."), _("\
-Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-#endif
-
- add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
-Set creation of new console when creating child process."), _("\
-Show creation of new console when creating child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("new-group", class_support, &new_group, _("\
-Set creation of new group when creating child process."), _("\
-Show creation of new group when creating child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("debugexec", class_support, &debug_exec, _("\
-Set whether to display execution in child process."), _("\
-Show whether to display execution in child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("debugevents", class_support, &debug_events, _("\
-Set whether to display kernel events in child process."), _("\
-Show whether to display kernel events in child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("debugmemory", class_support, &debug_memory, _("\
-Set whether to display memory accesses in child process."), _("\
-Show whether to display memory accesses in child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- add_setshow_boolean_cmd ("debugexceptions", class_support,
- &debug_exceptions, _("\
-Set whether to display kernel exceptions in child process."), _("\
-Show whether to display kernel exceptions in child process."), NULL,
- NULL,
- NULL, /* FIXME: i18n: */
- &setlist, &showlist);
-
- 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 (&win32_ops);
- deprecated_init_ui_hook = set_win32_aliases;
-}
-
-/* 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 win32_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 win32_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 "ptid" is alive
- by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
- it means that the thread has died. Otherwise it is assumed to be alive. */
-static int
-win32_win32_thread_alive (ptid_t ptid)
-{
- int tid;
-
- gdb_assert (ptid_get_tid (ptid) != 0);
- tid = ptid_get_tid (ptid);
-
- return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
- FALSE : TRUE;
-}
-
-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);
- }
- }
-}
-
-void
-_initialize_psapi (void)
-{
- /* Load optional functions used for retrieving filename information
- associated with the currently debugged process or its dlls. */
- if (!psapi_loaded)
- {
- HMODULE psapi_module_handle;
-
- psapi_loaded = -1;
-
- psapi_module_handle = LoadLibrary ("psapi.dll");
- if (psapi_module_handle)
- {
- psapi_EnumProcessModules = (void *) GetProcAddress (psapi_module_handle, "EnumProcessModules");
- psapi_GetModuleInformation = (void *) GetProcAddress (psapi_module_handle, "GetModuleInformation");
- psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle, "GetModuleFileNameExA");
-
- if (psapi_EnumProcessModules != NULL
- && psapi_GetModuleInformation != NULL
- && psapi_GetModuleFileNameExA != NULL)
- psapi_loaded = 1;
- }
- }
-
- /* This will probably fail on Windows 9x/Me. Let the user know that we're
- missing some functionality. */
- if (psapi_loaded < 0)
- warning(_("cannot automatically find executable file or library to read symbols. Use \"file\" or \"dll\" command to load executable/libraries directly."));
-}
projects / binutils-gdb.git / commitdiff