+++ /dev/null
-/* Target-vector operations for controlling win32 child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
-
- 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 2 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 eve nthe 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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-*/
-
-/* by Steve Chamberlain, sac@cygnus.com */
-
-/* We assume we're being built with and will be used for cygwin. */
-
-#include "defs.h"
-#include "frame.h" /* required by inferior.h */
-#include "inferior.h"
-#include "target.h"
-#include "wait.h"
-#include "gdbcore.h"
-#include "command.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>
-#endif
-
-#include "buildsym.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "gdb_string.h"
-#include "gdbthread.h"
-#include "gdbcmd.h"
-#include <sys/param.h>
-#include <unistd.h>
-
-/* 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
-
-/* Forward declaration */
-extern struct target_ops child_ops;
-
-static void child_stop PARAMS ((void));
-static int win32_child_thread_alive PARAMS ((int));
-
-static int last_sig = 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 suspend_count;
- CONTEXT context;
-} thread_info;
-
-static thread_info thread_head = {NULL};
-
-/* 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;
-
-/* User options. */
-static int new_console = 0;
-static int new_group = 0;
-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 */
-
-/* This vector maps GDB's idea of a register's number into an address
- in the win32 exception context vector.
-
- It also contains the bit mask needed to load the register in question.
-
- 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. */
-
-#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
-static const int mappings[] =
-{
- context_offset(Eax),
- context_offset(Ecx),
- context_offset(Edx),
- context_offset(Ebx),
- context_offset(Esp),
- context_offset(Ebp),
- context_offset(Esi),
- context_offset(Edi),
- context_offset(Eip),
- context_offset(EFlags),
- context_offset(SegCs),
- context_offset(SegSs),
- context_offset(SegDs),
- context_offset(SegEs),
- context_offset(SegFs),
- context_offset(SegGs),
- context_offset(FloatSave.RegisterArea[0 * 10]),
- context_offset(FloatSave.RegisterArea[1 * 10]),
- context_offset(FloatSave.RegisterArea[2 * 10]),
- context_offset(FloatSave.RegisterArea[3 * 10]),
- context_offset(FloatSave.RegisterArea[4 * 10]),
- context_offset(FloatSave.RegisterArea[5 * 10]),
- context_offset(FloatSave.RegisterArea[6 * 10]),
- context_offset(FloatSave.RegisterArea[7 * 10]),
-};
-
-/* 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},
- {-1, -1}};
-
-/* Find a thread record given a thread id.
- If get_context then also retrieve the context for this
- 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->suspend_count && get_context)
- {
- if (get_context > 0)
- th->suspend_count = SuspendThread (th->h) + 1;
- else if (get_context < 0)
- th->suspend_count = -1;
-
- th->context.ContextFlags = CONTEXT_DEBUGGER;
- GetThreadContext (th->h, &th->context);
- }
- return th;
- }
-
- return NULL;
-}
-
-/* Add a thread to the thread list */
-static thread_info *
-child_add_thread(DWORD id, HANDLE h)
-{
- thread_info *th;
-
- if ((th = thread_rec (id, FALSE)))
- return th;
-
- th = (thread_info *) xmalloc (sizeof (*th));
- memset(th, 0, sizeof (*th));
- th->id = id;
- th->h = h;
- th->next = thread_head.next;
- thread_head.next = th;
- add_thread (id);
- return th;
-}
-
-/* Clear out any old thread list and reintialize it to a
- pristine state. */
-static void
-child_init_thread_list ()
-{
- thread_info *th = &thread_head;
-
- DEBUG_EVENTS (("gdb: child_init_thread_list\n"));
- init_thread_list ();
- while (th->next != NULL)
- {
- thread_info *here = th->next;
- th->next = here->next;
- (void) CloseHandle (here->h);
- free (here);
- }
-}
-
-/* Delete a thread from the list of threads */
-static void
-child_delete_thread (DWORD id)
-{
- thread_info *th;
-
- if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (id));
- delete_thread (id);
-
- 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;
- CloseHandle (here->h);
- free (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)
-{
- if (r >= 0)
- supply_register (r, ((char *) ¤t_thread->context) + mappings[r]);
- else
- {
- for (r = 0; r < NUM_REGS; r++)
- do_child_fetch_inferior_registers (r);
- }
-}
-
-static void
-child_fetch_inferior_registers (int r)
-{
- current_thread = thread_rec (inferior_pid, TRUE);
- do_child_fetch_inferior_registers (r);
-}
-
-static void
-do_child_store_inferior_registers (int r)
-{
- if (r >= 0)
- read_register_gen (r, ((char *) ¤t_thread->context) + mappings[r]);
- else
- {
- for (r = 0; r < NUM_REGS; r++)
- do_child_store_inferior_registers (r);
- }
-}
-
-/* Store a new register value into the current thread context */
-static void
-child_store_inferior_registers (int r)
-{
- current_thread = thread_rec (inferior_pid, TRUE);
- do_child_store_inferior_registers (r);
-}
-
-/* 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)
-{
- 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, *dll_basename;
- struct objfile *objfile;
- MEMORY_BASIC_INFORMATION minfo;
-
- dll_buf[0] = dll_buf[sizeof(dll_buf) - 1] = '\0';
-
- /* The following code attempts to find the name of the dll by reading the
- name from the processes memory. Unfortunately it doesn't work right.
- Doing this the "right way" for Windows is very difficult. FIXME */
-#ifdef DOESNT_WORK
- memset (&minfo, 0, sizeof minfo);
- if (VirtualQueryEx (current_process_handle, (LPCVOID) event->lpBaseOfDll,
- &minfo, sizeof(minfo)) && minfo.BaseAddress) {
- DWORD len;
- IMAGE_DOS_HEADER *hmm0 = (IMAGE_DOS_HEADER *) minfo.BaseAddress;
- HMODULE hmm = (HMODULE) (((DWORD) hmm0) + hmm0->e_lfanew);
-
- if ((len = GetModuleFileName (hmm, dll_buf, MAX_PATH)))
- {
- dll_name = dll_buf;
- dll_name[len] = '\0';
- }
- }
-#endif
-
- /* 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];
-
- ReadProcessMemory (current_process_handle,
- (LPCVOID) event->lpImageName,
- (char *) &dll_name_ptr,
- sizeof (dll_name_ptr), &done);
-
- /* See if we could read the address of a string, and that the
- address isn't null. */
-
- if (done != sizeof (dll_name_ptr) || !dll_name_ptr)
- return 1;
-
- 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);
-
- dll_name = alloca (len);
-
- 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
- {
- ReadProcessMemory (current_process_handle,
- (LPCVOID) dll_name_ptr,
- dll_name,
- len,
- &done);
- }
- }
-
- if (!dll_name)
- return 1;
-
- while ((p = strchr (dll_name, '\\')))
- *p = '/';
-
- /* FIXME!! It would be nice to define one symbol which pointed to the
- front of the dll if we can't find any symbols. */
-
- if (!(dll_basename = strrchr(dll_name, '/')))
- dll_basename = dll_name;
- else
- dll_basename++;
-
- ALL_OBJFILES(objfile)
- {
- char *objfile_basename;
- objfile_basename = strrchr(objfile->name, '/');
-
- if (objfile_basename &&
- strcmp(dll_basename, objfile_basename + 1) == 0)
- {
- printf_unfiltered ("%x:%s (symbols previously loaded)\n",
- event->lpBaseOfDll, dll_name);
- goto out;
- }
- }
-
- /* 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.
-
- FIXME: Is this the real reason that we need the 0x1000 ? */
-
- printf_unfiltered ("%x:%s", event->lpBaseOfDll, dll_name);
- symbol_file_add (dll_name, 0, (int) event->lpBaseOfDll + 0x1000, 0, 0, 0, 0, 1);
- printf_unfiltered ("\n");
-
-out:
- return 1;
-}
-
-/* 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;
- int gotasig = FALSE;
-
- if (!target_read_string
- ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
- || !s || !*s)
- return gotasig;
-
- if (strncmp(s, CYGWIN_SIGNAL_STRING, sizeof(CYGWIN_SIGNAL_STRING) - 1))
- {
- warning (s);
- }
- else
- {
- char *p;
- /*last_sig = */strtol(s + sizeof(CYGWIN_SIGNAL_STRING) - 1, &p, 0);
- if (gotasig = (ourstatus->value.sig = target_signal_from_host (last_sig)))
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
- }
-
- free (s);
- return gotasig;
-}
-
-static int
-handle_exception (struct target_waitstatus *ourstatus)
-{
- int i;
- int done = 0;
- thread_info *th;
-
- 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)
- {
- case EXCEPTION_ACCESS_VIOLATION:
- DEBUG_EXCEPT (("gdb: Target exception ACCESS_VIOLATION at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
- 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;
- break;
- case EXCEPTION_BREAKPOINT:
- DEBUG_EXCEPT (("gdb: Target exception BREAKPOINT at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
- 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));
- ourstatus->value.sig = TARGET_SIGNAL_INT;
- /* User typed CTRL-C. Continue with this status */
- last_sig = SIGINT; /* FIXME - should check pass state */
- break;
- case EXCEPTION_SINGLE_STEP:
- DEBUG_EXCEPT (("gdb: Target exception SINGLE_STEP at 0x%08x\n",
- current_event.u.Exception.ExceptionRecord.ExceptionAddress));
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
- 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",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- current_event.u.Exception.ExceptionRecord.ExceptionAddress);
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- break;
- }
- exception_count++;
- return 1;
-}
-
-/* Resume all artificially suspended threads if we are continuing
- execution */
-static BOOL
-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));
- if (res = ContinueDebugEvent (current_event.dwProcessId,
- current_event.dwThreadId,
- continue_status))
- for (th = &thread_head; (th = th->next) != NULL; )
- if (((id == -1) || (id == th->id)) && th->suspend_count)
- {
- for (i = 0; i < th->suspend_count; i++)
- (void) ResumeThread (th->h);
- th->suspend_count = 0;
- }
-
- return res;
-}
-
-static int
-child_wait (int pid, struct target_waitstatus *ourstatus)
-{
- /* 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)
- {
- DWORD continue_status;
- BOOL t = WaitForDebugEvent (¤t_event, INFINITE);
- char *p;
- thread_info *th;
- int sig;
-
- event_count++;
-
- continue_status = DBG_CONTINUE;
-
- switch (current_event.dwDebugEventCode)
- {
- case CREATE_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
- /* Record the existence of this thread */
- 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));
- break;
-
- case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
- child_delete_thread (current_event.dwThreadId);
- break;
-
- case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "CREATE_PROCESS_DEBUG_EVENT"));
- current_process_handle = current_event.u.CreateProcessInfo.hProcess;
-
- main_thread_id = inferior_pid = current_event.dwThreadId;
- /* Add the main thread */
- current_thread = child_add_thread (inferior_pid,
- current_event.u.CreateProcessInfo.hThread);
- break;
-
- case EXIT_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXIT_PROCESS_DEBUG_EVENT"));
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
- CloseHandle (current_process_handle);
- return current_event.dwProcessId;
- break;
-
- case LOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "LOAD_DLL_DEBUG_EVENT"));
- catch_errors (handle_load_dll, NULL, "", RETURN_MASK_ALL);
- registers_changed(); /* mark all regs invalid */
- break;
-
- case UNLOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "UNLOAD_DLL_DEBUG_EVENT"));
- break; /* FIXME: don't know what to do here */
-
- case EXCEPTION_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "EXCEPTION_DEBUG_EVENT"));
- if (handle_exception (ourstatus))
- return current_event.dwThreadId;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
- break;
-
- case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- current_event.dwProcessId, current_event.dwThreadId,
- "OUTPUT_DEBUG_STRING_EVENT"));
- if (handle_output_debug_string (ourstatus))
- return 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",
- current_event.dwDebugEventCode);
- break;
- }
-
- CHECK (child_continue (continue_status, -1));
- }
-}
-
-/* Attach to process PID, then initialize for debugging it. */
-
-static void
-child_attach (args, from_tty)
- char *args;
- int from_tty;
-{
- BOOL ok;
-
- if (!args)
- error_no_arg ("process-id to attach");
-
- current_event.dwProcessId = strtoul (args, 0, 0);
-
- ok = DebugActiveProcess (current_event.dwProcessId);
-
- if (!ok)
- error ("Can't attach to process.");
-
- exception_count = 0;
- event_count = 0;
-
- 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 (current_event.dwProcessId));
- else
- printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (current_event.dwProcessId));
-
- gdb_flush (gdb_stdout);
- }
-
- push_target (&child_ops);
-}
-
-static void
-child_detach (args, from_tty)
- char *args;
- int from_tty;
-{
- if (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));
- gdb_flush (gdb_stdout);
- }
- inferior_pid = 0;
- unpush_target (&child_ops);
-}
-
-/* Print status information about what we're accessing. */
-
-static void
-child_files_info (ignore)
- struct target_ops *ignore;
-{
- printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
-}
-
-/* ARGSUSED */
-static void
-child_open (arg, from_tty)
- 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.
- 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;
-{
- 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;
-
- if (!exec_file)
- {
- 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 (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);
-
- strcat (args, " ");
- strcat (args, allargs);
-
- /* Prepare the environment vars for CreateProcess. */
- {
- /* This code use 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
- it uses PATH to find DLL's. Fortunately PATH has a well-defined value
- in both posix and win32 environments. cygwin.dll will change it back
- to posix style if necessary. */
-
- static const char *conv_path_names[] =
- {
- "PATH=",
- 0
- };
-
- /* CreateProcess takes the environment list as a null terminated set of
- strings (i.e. two nulls terminate the list). */
-
- /* Get total size for env strings. */
- for (envlen = 0, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
-
- for (j = 0; conv_path_names[j]; j++)
- {
- 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))
- envlen += len
- + cygwin32_posix_to_win32_path_list_buf_size (env[i] + len);
- else
- envlen += strlen (env[i]) + 1;
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- envlen += strlen (env[i]) + 1;
- }
-
- winenv = alloca (envlen + 1);
-
- /* Copy env strings into new buffer. */
- for (temp = winenv, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
-
- for (j = 0; conv_path_names[j]; j++)
- {
- 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))
- {
- memcpy (temp, env[i], len);
- cygwin32_posix_to_win32_path_list (env[i] + len, temp + len);
- }
- else
- strcpy (temp, env[i]);
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- strcpy (temp, env[i]);
-
- temp += strlen (temp) + 1;
- }
-
- /* Final nil string to terminate new env. */
- *temp = 0;
- }
-
- ret = CreateProcess (0,
- args, /* command line */
- NULL, /* Security */
- NULL, /* thread */
- TRUE, /* inherit handles */
- flags, /* start flags */
- winenv,
- NULL, /* current directory */
- &si,
- &pi);
- if (!ret)
- error ("Error creating process %s, (error %d)\n", exec_file, GetLastError());
-
- exception_count = 0;
- event_count = 0;
-
- 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 ();
-
- /* Ignore the first trap */
- child_wait (inferior_pid, &dummy);
-
- proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
-}
-
-static void
-child_mourn_inferior ()
-{
- (void) child_continue (DBG_CONTINUE, -1);
- unpush_target (&child_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
-child_stop ()
-{
- DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
- CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0));
- registers_changed(); /* refresh register state */
-}
-
-int
-child_xfer_memory (CORE_ADDR memaddr, char *our, int len,
- int write, struct target_ops *target)
-{
- DWORD done;
- 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);
- 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);
- }
- return done;
-}
-
-void
-child_kill_inferior (void)
-{
- CHECK (TerminateProcess (current_process_handle, 0));
-
- for (;;)
- {
- if (!child_continue (DBG_CONTINUE, -1))
- break;
- if (!WaitForDebugEvent (¤t_event, INFINITE))
- break;
- if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
- break;
- }
-
- CHECK (CloseHandle (current_process_handle));
-
- /* this may fail in an attached process so don't check. */
- (void) CloseHandle (current_thread->h);
- target_mourn_inferior(); /* or just child_mourn_inferior? */
-}
-
-void
-child_resume (int pid, int step, enum target_signal sig)
-{
- int i;
- thread_info *th;
- DWORD continue_status = last_sig > 0 && last_sig < NSIG ?
- DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
-
- 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)
- {
-#ifdef i386
- /* Single step by setting t bit */
- child_fetch_inferior_registers (PS_REGNUM);
- th->context.EFlags |= FLAG_TRACE_BIT;
-#endif
- }
-
- if (th->context.ContextFlags)
- {
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
-
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
- if (sig && sig != last_sig)
- fprintf_unfiltered (gdb_stderr, "Can't send signals to the child. signal %d\n", sig);
-
- last_sig = 0;
- child_continue (continue_status, pid);
-}
-
-static void
-child_prepare_to_store ()
-{
- /* Do nothing, since we can store individual regs */
-}
-
-static int
-child_can_run ()
-{
- return 1;
-}
-
-static void
-child_close ()
-{
- DEBUG_EVENTS (("gdb: child_close, inferior_pid=%d\n", inferior_pid));
-}
-
-struct target_ops child_ops ;
-
-static void
-init_child_ops(void)
-{
- child_ops.to_shortname = "child";
- child_ops.to_longname = "Win32 child process";
- child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
- child_ops.to_open = child_open;
- child_ops.to_close = child_close;
- child_ops.to_attach = child_attach;
- child_ops.to_detach = child_detach;
- child_ops.to_resume = child_resume;
- child_ops.to_wait = child_wait;
- child_ops.to_fetch_registers = child_fetch_inferior_registers;
- child_ops.to_store_registers = child_store_inferior_registers;
- child_ops.to_prepare_to_store = child_prepare_to_store;
- child_ops.to_xfer_memory = child_xfer_memory;
- child_ops.to_files_info = child_files_info;
- child_ops.to_insert_breakpoint = memory_insert_breakpoint;
- child_ops.to_remove_breakpoint = memory_remove_breakpoint;
- child_ops.to_terminal_init = terminal_init_inferior;
- 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_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_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 ()
-{
- 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,
- "Set whether to display kernel exceptions in child process.",
- &setlist),
- &showlist);
-
- add_target (&child_ops);
-}
-
-/* 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)
-{
- 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)
-{
- static char buf[80];
- if (pid == current_event.dwProcessId)
- sprintf (buf, "process %d", pid);
- else
- sprintf (buf, "thread %d.0x%x", current_event.dwProcessId, pid);
- return buf;
-}
projects / thirdparty / binutils-gdb.git / commitdiff
