From 24e60978684ee2f137dc270ea3c3ef28da25ed37 Mon Sep 17 00:00:00 2001 From: Steve Chamberlain Date: Mon, 9 Oct 1995 21:54:26 +0000 Subject: * NEWS: Add information about win32 and arm code. * win32-nat.c: Renamed from win32.c * config/i386/win32.mh: Renamed from config/i386/i386win32.mh. * config/i386/win32.mt: Renamed from config/i386/i386win32.mt. * config/i386/tm-win32.h: Renamed from config/i386/tm-i386win32.h. * config/i386/xm-win32.h: Renamed from config/i386/xm-i386win32.h. * configure.in (i[345]86-*-win32): Updated to cope with filename changes. * configure: Regenerated. --- gdb/win32.c | 643 ------------------------------------------------------------ 1 file changed, 643 deletions(-) (limited to 'gdb/win32.c') diff --git a/gdb/win32.c b/gdb/win32.c index b7308c5..e69de29 100644 --- a/gdb/win32.c +++ b/gdb/win32.c @@ -1,643 +0,0 @@ -/* Target-vector operations for controlling win32 child processes, for GDB. - Copyright 1996 - 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 */ - -#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 -#include -#include -#include -#include "buildsym.h" -#include "gdb_string.h" -#include "thread.h" -#include "gdbcmd.h" - -#define CHECK(x) check (x, __FILE__,__LINE__) -#define DEBUG(x) if (remote_debug) printf x - - -/* Forward declaration */ -extern struct target_ops child_ops; - -/* The most recently read context. Inspect ContextFlags to see what - bits are valid. */ - -static CONTEXT context; - -/* The process and thread handles for the above context. */ - -static HANDLE current_process; -static HANDLE current_thread; -static int current_process_id; -static int current_thread_id; - -/* 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; - -/* 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. */ - -struct regmappings - { - char *incontext; - int mask; - }; - -static const struct regmappings - mappings[] = -{ - {(char *) &context.Eax, CONTEXT_INTEGER}, - {(char *) &context.Ecx, CONTEXT_INTEGER}, - {(char *) &context.Edx, CONTEXT_INTEGER}, - {(char *) &context.Ebx, CONTEXT_INTEGER}, - {(char *) &context.Esp, CONTEXT_CONTROL}, - {(char *) &context.Ebp, CONTEXT_CONTROL}, - {(char *) &context.Esi, CONTEXT_INTEGER}, - {(char *) &context.Edi, CONTEXT_INTEGER}, - {(char *) &context.Eip, CONTEXT_CONTROL}, - {(char *) &context.EFlags, CONTEXT_CONTROL}, - {(char *) &context.SegCs, CONTEXT_SEGMENTS}, - {(char *) &context.SegSs, CONTEXT_SEGMENTS}, - {(char *) &context.SegDs, CONTEXT_SEGMENTS}, - {(char *) &context.SegEs, CONTEXT_SEGMENTS}, - {(char *) &context.SegFs, CONTEXT_SEGMENTS}, - {(char *) &context.SegGs, CONTEXT_SEGMENTS}, - {&context.FloatSave.RegisterArea[0 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[1 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[2 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[3 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[4 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[5 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[6 * 10], CONTEXT_FLOATING_POINT}, - {&context.FloatSave.RegisterArea[7 * 10], CONTEXT_FLOATING_POINT}, -}; - - -/* 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}, - {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP}, - {DBG_CONTROL_C, TARGET_SIGNAL_INT}, - {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP}, - {-1, -1}}; - - -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 -child_fetch_inferior_registers (int r) -{ - if (r < 0) - { - for (r = 0; r < NUM_REGS; r++) - child_fetch_inferior_registers (r); - } - else - { - supply_register (r, mappings[r].incontext); - } -} - -static void -child_store_inferior_registers (int r) -{ - if (r < 0) - { - for (r = 0; r < NUM_REGS; r++) - child_store_inferior_registers (r); - } - else - { - read_register_gen (r, mappings[r].incontext); - } -} - - -/* Wait for child to do something. Return pid of child, or -1 in case - of error; store status through argument pointer OURSTATUS. */ - - -static void -handle_load_dll (DEBUG_EVENT * event) -{ - DWORD dll_name_ptr; - DWORD done; - - ReadProcessMemory (current_process, - (DWORD) event->u.LoadDll.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) - { - char *dll_name; - int size = event->u.LoadDll.fUnicode ? sizeof (WCHAR) : sizeof (char); - int len = 0; - char b[2]; - do - { - ReadProcessMemory (current_process, - 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->u.LoadDll.fUnicode) - { - WCHAR *unicode_dll_name = (WCHAR *) alloca (len * sizeof (WCHAR)); - ReadProcessMemory (current_process, - 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, - dll_name_ptr, - dll_name, - len, - &done); - } - - /* FIXME!! It would be nice to define one symbol which pointed to the - front of the dll if we can't find any symbols. */ - - context.ContextFlags = CONTEXT_FULL; - GetThreadContext (current_thread, &context); - - symbol_file_add (dll_name, 0, (int) event->u.LoadDll.lpBaseOfDll, 0, 0, 0); - - /* We strip off the path of the dll for tidiness. */ - if (strrchr (dll_name, '\\')) - dll_name = strrchr (dll_name, '\\') + 1; - printf_unfiltered ("%x:%s\n", event->u.LoadDll.lpBaseOfDll, dll_name); - } -} - - -static void -handle_exception (DEBUG_EVENT * event, struct target_waitstatus *ourstatus) -{ - int i; - int done = 0; - ourstatus->kind = TARGET_WAITKIND_STOPPED; - - for (i = 0; !done && xlate[i].us > 0; i++) - { - if (xlate[i].them == event->u.Exception.ExceptionRecord.ExceptionCode) - { - ourstatus->value.sig = xlate[i].us; - done = 1; - break; - } - } - - if (!done) - { - printf_unfiltered ("Want to know about exception code %08x\n", - event->u.Exception.ExceptionRecord.ExceptionCode); - ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; - } - context.ContextFlags = CONTEXT_FULL; - GetThreadContext (current_thread, &context); - exception_count++; -} - -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. 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) - { - DEBUG_EVENT event; - BOOL t = WaitForDebugEvent (&event, INFINITE); - - DEBUG (("%d = WaitForDebugEvent() code=%d pid=%d tid=%d)\n", - t, - event.dwDebugEventCode, - event.dwProcessId, - event.dwThreadId)); - - event_count++; - - current_thread_id = event.dwThreadId; - current_process_id = event.dwProcessId; - - switch (event.dwDebugEventCode) - { - case CREATE_THREAD_DEBUG_EVENT: - case EXIT_THREAD_DEBUG_EVENT: - case CREATE_PROCESS_DEBUG_EVENT: - break; - - case EXIT_PROCESS_DEBUG_EVENT: - ourstatus->kind = TARGET_WAITKIND_EXITED; - ourstatus->value.integer = event.u.ExitProcess.dwExitCode; - CloseHandle (current_process); - CloseHandle (current_thread); - return current_process_id; - break; - - case LOAD_DLL_DEBUG_EVENT: - handle_load_dll (&event); - break; - case EXCEPTION_DEBUG_EVENT: - handle_exception (&event, ourstatus); - return current_process_id; - default: - printf_unfiltered ("waitfor it %d %d %d %d\n", t, - event.dwDebugEventCode, - event.dwProcessId, - event.dwThreadId); - break; - } - CHECK (ContinueDebugEvent (current_process_id, - current_thread_id, - DBG_CONTINUE)); - } -} - - - - -/* 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_process_id = strtoul (args, 0, 0); - - ok = DebugActiveProcess (current_process_id); - - 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_process_id)); - else - printf_unfiltered ("Attaching to %s\n", - target_pid_to_str (current_process_id)); - - gdb_flush (gdb_stdout); - } - - inferior_pid = current_process_id; - 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."); -} - -/* Stub function which causes the inferior that runs it, to be ptrace-able - by its parent process. */ - - -/* Start an inferior Unix 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; - STARTUPINFO si; - PROCESS_INFORMATION pi; - struct target_waitstatus dummy; - BOOL ret; - DWORD flags; - - if (!exec_file) - { - error ("No executable specified, use `target exec'.\n"); - } - - memset (&si, 0, sizeof (si)); - si.cb = sizeof (si); - - /* A realpath is always the same size, or a bit shorter than a nice path. */ - real_path = alloca (strlen (exec_file) + 1); - path_to_real_path (exec_file, real_path); - - flags = DEBUG_ONLY_THIS_PROCESS | DEBUG_PROCESS; - - if (new_group) - flags |= CREATE_NEW_PROCESS_GROUP; - - if (new_console) - flags |= CREATE_NEW_CONSOLE; - - ret = CreateProcess (real_path, - allargs, - NULL, /* Security */ - NULL, /* thread */ - TRUE, /* inherit handles */ - flags, /* start flags */ - env, - NULL, /* current directory */ - &si, - &pi); - if (!ret) - error ("Error creating process %s\n", exec_file); - - exception_count = 0; - event_count = 0; - - inferior_pid = pi.dwProcessId; - current_process = pi.hProcess; - current_thread = pi.hThread; - current_process_id = pi.dwProcessId; - current_thread_id = pi.dwThreadId; - push_target (&child_ops); - 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 () -{ - 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. */ - -void -child_stop () -{ - CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0)); -} - -int -child_xfer_memory (CORE_ADDR memaddr, char *our, int len, int write, struct target_ops *target) -{ - DWORD done; - if (write) - { - WriteProcessMemory (current_process, memaddr, our, len, &done); - FlushInstructionCache (current_process, memaddr, len); - } - else - { - ReadProcessMemory (current_process, memaddr, our, len, &done); - } - return done; -} - -void -child_kill_inferior (void) -{ - CHECK (TerminateProcess (current_process, 0)); - CHECK (CloseHandle (current_process)); - CHECK (CloseHandle (current_thread)); -} - -void -child_resume (int pid, int step, enum target_signal signal) -{ - DEBUG (("child_resume (%d, %d, %d);\n", pid, step, signal)); - - if (step) - { - /* Single step by setting t bit */ - child_fetch_inferior_registers (PS_REGNUM); - context.EFlags |= FLAG_TRACE_BIT; - } - - if (context.ContextFlags) - { - CHECK (SetThreadContext (current_thread, &context)); - context.ContextFlags = 0; - } - - if (signal) - { - fprintf_unfiltered (gdb_stderr, "Can't send signals to the child.\n"); - } - - CHECK (ContinueDebugEvent (current_process_id, - current_thread_id, - DBG_CONTINUE)); -} - -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 () -{ - -} -struct target_ops child_ops = -{ - "child", /* to_shortname */ - "Win32 child process", /* to_longname */ - "Win32 child process (started by the \"run\" command).", /* to_doc */ - child_open, /* to_open */ - child_close, /* to_close */ - child_attach, /* to_attach */ - child_detach, /* to_detach */ - child_resume, /* to_resume */ - child_wait, /* to_wait */ - child_fetch_inferior_registers,/* to_fetch_registers */ - child_store_inferior_registers,/* to_store_registers */ - child_prepare_to_store, /* to_child_prepare_to_store */ - child_xfer_memory, /* to_xfer_memory */ - child_files_info, /* to_files_info */ - memory_insert_breakpoint, /* to_insert_breakpoint */ - memory_remove_breakpoint, /* to_remove_breakpoint */ - terminal_init_inferior, /* to_terminal_init */ - terminal_inferior, /* to_terminal_inferior */ - terminal_ours_for_output, /* to_terminal_ours_for_output */ - terminal_ours, /* to_terminal_ours */ - child_terminal_info, /* to_terminal_info */ - child_kill_inferior, /* to_kill */ - 0, /* to_load */ - 0, /* to_lookup_symbol */ - child_create_inferior, /* to_create_inferior */ - child_mourn_inferior, /* to_mourn_inferior */ - child_can_run, /* to_can_run */ - 0, /* to_notice_signals */ - 0, /* to_thread_alive */ - child_stop, /* to_stop */ - process_stratum, /* to_stratum */ - 0, /* to_next */ - 1, /* to_has_all_memory */ - 1, /* to_has_memory */ - 1, /* to_has_stack */ - 1, /* to_has_registers */ - 1, /* to_has_execution */ - 0, /* to_sections */ - 0, /* to_sections_end */ - OPS_MAGIC /* to_magic */ -}; - -void -_initialize_inftarg () -{ - 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_target (&child_ops); -} -- cgit v1.1