#include "defs.h"
#include "frame.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>
#include <sys/cygwin.h>
#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>
#include "exec.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#ifndef _GNU_H_WINDOWS_H
enum
{
FLAG_TRACE_BIT = 0x100,
CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
};
#endif
#include <sys/procfs.h>
#include <psapi.h>
#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
| CONTEXT_EXTENDED_REGISTERS
static unsigned dr[8];
static int debug_registers_changed;
static int debug_registers_used;
#define CYGWIN_SIGNAL_STRING "cygwin: signal"
#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 child_stop (void);
static int win32_child_thread_alive (ptid_t);
void child_kill_inferior (void);
static enum target_signal last_sig = TARGET_SIGNAL_0;
typedef struct thread_info_struct
{
struct thread_info_struct *next;
DWORD id;
HANDLE h;
char *name;
int suspend_count;
int reload_context;
CONTEXT context;
STACKFRAME sf;
}
thread_info;
static thread_info thread_head;
static DEBUG_EVENT current_event;
static HANDLE current_process_handle;
static thread_info *current_thread;
static DWORD main_thread_id;
static int exception_count = 0;
static int event_count = 0;
static int saw_create;
static int new_console = 0;
static int new_group = 1;
static int debug_exec = 0;
static int debug_events = 0;
static int debug_memory = 0;
static int debug_exceptions = 0;
static int useshell = 0;
#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]),
context_offset (FloatSave.ControlWord),
context_offset (FloatSave.StatusWord),
context_offset (FloatSave.TagWord),
context_offset (FloatSave.ErrorSelector),
context_offset (FloatSave.ErrorOffset),
context_offset (FloatSave.DataSelector),
context_offset (FloatSave.DataOffset),
context_offset (FloatSave.ErrorSelector)
,
context_offset (ExtendedRegisters[10*16]),
context_offset (ExtendedRegisters[11*16]),
context_offset (ExtendedRegisters[12*16]),
context_offset (ExtendedRegisters[13*16]),
context_offset (ExtendedRegisters[14*16]),
context_offset (ExtendedRegisters[15*16]),
context_offset (ExtendedRegisters[16*16]),
context_offset (ExtendedRegisters[17*16]),
context_offset (ExtendedRegisters[24])
};
#undef context_offset
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}};
static void
check (BOOL ok, const char *file, int line)
{
if (!ok)
printf_filtered ("error return %s:%d was %lu\n", file, line,
GetLastError ());
}
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 && id != current_event.dwThreadId)
th->suspend_count = SuspendThread (th->h) + 1;
else if (get_context < 0)
th->suspend_count = -1;
th->reload_context = 1;
}
return th;
}
return NULL;
}
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 (pid_to_ptid (id));
if (debug_registers_used)
{
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.Dr7 = dr[7];
CHECK (SetThreadContext (th->h, &th->context));
th->context.ContextFlags = 0;
}
return th;
}
static void
child_init_thread_list (void)
{
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);
xfree (here);
}
thread_head.next = NULL;
}
static void
child_delete_thread (DWORD id)
{
thread_info *th;
if (info_verbose)
printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
delete_thread (pid_to_ptid (id));
for (th = &thread_head;
th->next != NULL && th->next->id != id;
th = th->next)
continue;
if (th->next != NULL)
{
thread_info *here = th->next;
th->next = here->next;
CloseHandle (here->h);
xfree (here);
}
}
static void
do_child_fetch_inferior_registers (int r)
{
char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
long l;
if (!current_thread)
return;
if (current_thread->reload_context)
{
thread_info *th = current_thread;
th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
GetThreadContext (th->h, &th->context);
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;
}
#define I387_ST0_REGNUM I386_ST0_REGNUM
if (r == I387_FISEG_REGNUM)
{
l = *((long *) context_offset) & 0xffff;
regcache_raw_supply (current_regcache, r, (char *) &l);
}
else if (r == I387_FOP_REGNUM)
{
l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
regcache_raw_supply (current_regcache, r, (char *) &l);
}
else if (r >= 0)
regcache_raw_supply (current_regcache, r, context_offset);
else
{
for (r = 0; r < NUM_REGS; r++)
do_child_fetch_inferior_registers (r);
}
#undef I387_ST0_REGNUM
}
static void
child_fetch_inferior_registers (int r)
{
current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
if (current_thread)
do_child_fetch_inferior_registers (r);
}
static void
do_child_store_inferior_registers (int r)
{
if (!current_thread)
;
else if (r >= 0)
regcache_raw_collect (current_regcache, r,
((char *) ¤t_thread->context) + mappings[r]);
else
{
for (r = 0; r < NUM_REGS; r++)
do_child_store_inferior_registers (r);
}
}
static void
child_store_inferior_registers (int r)
{
current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
if (current_thread)
do_child_store_inferior_registers (r);
}
static int psapi_loaded = 0;
static HMODULE psapi_module_handle = NULL;
static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
int
psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
{
DWORD len;
MODULEINFO mi;
int i;
HMODULE dh_buf[1];
HMODULE *DllHandle = dh_buf;
DWORD cbNeeded;
BOOL ok;
if (!psapi_loaded ||
psapi_EnumProcessModules == NULL ||
psapi_GetModuleInformation == NULL ||
psapi_GetModuleFileNameExA == NULL)
{
if (psapi_loaded)
goto failed;
psapi_loaded = 1;
psapi_module_handle = LoadLibrary ("psapi.dll");
if (!psapi_module_handle)
{
goto failed;
}
psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
"GetModuleFileNameExA");
if (psapi_EnumProcessModules == NULL ||
psapi_GetModuleInformation == NULL ||
psapi_GetModuleFileNameExA == NULL)
goto failed;
}
cbNeeded = 0;
ok = (*psapi_EnumProcessModules) (current_process_handle,
DllHandle,
sizeof (HMODULE),
&cbNeeded);
if (!ok || !cbNeeded)
goto failed;
DllHandle = (HMODULE *) alloca (cbNeeded);
if (!DllHandle)
goto failed;
ok = (*psapi_EnumProcessModules) (current_process_handle,
DllHandle,
cbNeeded,
&cbNeeded);
if (!ok)
goto failed;
for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
{
if (!(*psapi_GetModuleInformation) (current_process_handle,
DllHandle[i],
&mi,
sizeof (mi)))
error (_("Can't get module info"));
len = (*psapi_GetModuleFileNameExA) (current_process_handle,
DllHandle[i],
dll_name_ret,
MAX_PATH);
if (len == 0)
error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
return 1;
}
failed:
dll_name_ret[0] = '\0';
return 0;
}
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;
};
struct so_stuff
{
struct so_stuff *next;
DWORD load_addr;
DWORD end_addr;
int loaded;
struct objfile *objfile;
char name[1];
} solib_start, *solib_end;
static int
safe_symbol_file_add_stub (void *argv)
{
#define p ((struct safe_symbol_file_add_args *)argv)
struct so_stuff *so = &solib_start;
while ((so = so->next))
if (so->loaded && strcasecmp (so->name, p->name) == 0)
return 0;
p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
return !!p->ret;
#undef p
}
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
}
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;
}
int max_dll_name_len;
static void
register_loaded_dll (const char *name, DWORD load_addr)
{
struct so_stuff *so;
char ppath[MAX_PATH + 1];
char buf[MAX_PATH + 1];
char cwd[MAX_PATH + 1];
char *p;
WIN32_FIND_DATA w32_fd;
HANDLE h = FindFirstFile(name, &w32_fd);
MEMORY_BASIC_INFORMATION m;
size_t len;
if (h == INVALID_HANDLE_VALUE)
strcpy (buf, name);
else
{
FindClose (h);
strcpy (buf, name);
if (GetCurrentDirectory (MAX_PATH + 1, cwd))
{
p = strrchr (buf, '\\');
if (p)
p[1] = '\0';
SetCurrentDirectory (buf);
GetFullPathName (w32_fd.cFileName, MAX_PATH, buf, &p);
SetCurrentDirectory (cwd);
}
}
cygwin_conv_to_posix_path (buf, ppath);
so = (struct so_stuff *) xmalloc (sizeof (struct so_stuff) + strlen (ppath) + 8 + 1);
so->loaded = 0;
so->load_addr = load_addr;
if (VirtualQueryEx (current_process_handle, (void *) load_addr, &m,
sizeof (m)))
so->end_addr = (DWORD) m.AllocationBase + m.RegionSize;
else
so->end_addr = load_addr + 0x2000;
so->next = NULL;
so->objfile = NULL;
strcpy (so->name, ppath);
solib_end->next = so;
solib_end = so;
len = strlen (ppath);
if (len > max_dll_name_len)
max_dll_name_len = len;
}
char *
get_image_name (HANDLE h, void *address, int unicode)
{
static char buf[(2 * MAX_PATH) + 1];
DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
char *address_ptr;
int len = 0;
char b[2];
DWORD done;
if (address == NULL)
return NULL;
if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
|| done != sizeof (address_ptr) || !address_ptr)
return NULL;
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;
}
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;
char *p;
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
dll_name = dll_buf;
if (*dll_name == '\0')
dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
if (!dll_name)
return 1;
register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000);
return 1;
}
static int
handle_unload_dll (void *dummy)
{
DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
struct so_stuff *so;
for (so = &solib_start; so->next != NULL; so = so->next)
if (so->next->load_addr == lpBaseOfDll)
{
struct so_stuff *sodel = so->next;
so->next = sodel->next;
if (!so->next)
solib_end = so;
if (sodel->objfile)
free_objfile (sodel->objfile);
xfree(sodel);
return 1;
}
error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
return 0;
}
char *
solib_address (CORE_ADDR address)
{
struct so_stuff *so;
for (so = &solib_start; so->next != NULL; so = so->next)
if (address >= so->load_addr && address <= so->end_addr)
return so->name;
return NULL;
}
char *
child_solib_loaded_library_pathname (int pid)
{
return !solib_end || !solib_end->name[0] ? NULL : solib_end->name;
}
void
child_clear_solibs (void)
{
struct so_stuff *so, *so1 = solib_start.next;
while ((so = so1) != NULL)
{
so1 = so->next;
xfree (so);
}
solib_start.next = NULL;
solib_start.objfile = NULL;
solib_end = &solib_start;
max_dll_name_len = sizeof ("DLL Name") - 1;
}
static struct section_addr_info *
get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
{
struct section_addr_info *result = NULL;
int section_count = bfd_count_sections (abfd);
asection *text_section = bfd_get_section_by_name (abfd, ".text");
CORE_ADDR text_vma;
if (!text_section)
{
}
else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
{
}
else
{
CORE_ADDR offset = text_load - text_vma;
struct section_table *table_start = NULL;
struct section_table *table_end = NULL;
struct section_table *iter = NULL;
build_section_table (abfd, &table_start, &table_end);
for (iter = table_start; iter < table_end; ++iter)
{
iter->addr += offset;
iter->endaddr += offset;
}
result = build_section_addr_info_from_section_table (table_start,
table_end);
xfree (table_start);
}
return result;
}
static struct objfile *
solib_symbols_add (char *name, int from_tty, CORE_ADDR load_addr)
{
struct section_addr_info *addrs = NULL;
static struct objfile *result = NULL;
bfd *abfd = NULL;
if (!name || !name[0])
return NULL;
abfd = bfd_openr (name, "pei-i386");
if (!abfd)
{
abfd = bfd_openr (name, "pe-i386");
}
if (abfd)
{
if (bfd_check_format (abfd, bfd_object))
{
addrs = get_relocated_section_addrs (abfd, load_addr);
}
bfd_close (abfd);
}
if (addrs)
{
result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
free_section_addr_info (addrs);
}
else
{
struct cleanup *my_cleanups;
addrs = alloc_section_addr_info (1);
my_cleanups = make_cleanup (xfree, addrs);
addrs->other[0].name = ".text";
addrs->other[0].addr = load_addr;
result = safe_symbol_file_add (name, from_tty, addrs, 0, OBJF_SHARED);
do_cleanups (my_cleanups);
}
return result;
}
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);
}
void
info_dll_command (char *ignore, int from_tty)
{
struct so_stuff *so = &solib_start;
if (!so->next)
return;
printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
while ((so = so->next) != NULL)
printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->name, so->load_addr);
return;
}
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) != 0)
{
if (strncmp (s, "cYg", 3) != 0)
warning (("%s"), s);
}
else
{
char *p;
int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0);
gotasig = target_signal_from_host (sig);
ourstatus->value.sig = gotasig;
if (gotasig)
ourstatus->kind = TARGET_WAITKIND_STOPPED;
}
xfree (s);
return gotasig;
}
static int
display_selector (HANDLE thread, DWORD sel)
{
LDT_ENTRY info;
if (GetThreadSelectorEntry (thread, sel, &info))
{
int base, limit;
printf_filtered ("0x%03lx: ", sel);
if (!info.HighWord.Bits.Pres)
{
puts_filtered ("Segment not present\n");
return 0;
}
base = (info.HighWord.Bits.BaseHi << 24) +
(info.HighWord.Bits.BaseMid << 16)
+ info.BaseLow;
limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow;
if (info.HighWord.Bits.Granularity)
limit = (limit << 12) | 0xfff;
printf_filtered ("base=0x%08x limit=0x%08x", base, limit);
if (info.HighWord.Bits.Default_Big)
puts_filtered(" 32-bit ");
else
puts_filtered(" 16-bit ");
switch ((info.HighWord.Bits.Type & 0xf) >> 1)
{
case 0:
puts_filtered ("Data (Read-Only, Exp-up");
break;
case 1:
puts_filtered ("Data (Read/Write, Exp-up");
break;
case 2:
puts_filtered ("Unused segment (");
break;
case 3:
puts_filtered ("Data (Read/Write, Exp-down");
break;
case 4:
puts_filtered ("Code (Exec-Only, N.Conf");
break;
case 5:
puts_filtered ("Code (Exec/Read, N.Conf");
break;
case 6:
puts_filtered ("Code (Exec-Only, Conf");
break;
case 7:
puts_filtered ("Code (Exec/Read, Conf");
break;
default:
printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type);
}
if ((info.HighWord.Bits.Type & 0x1) == 0)
puts_filtered(", N.Acc");
puts_filtered (")\n");
if ((info.HighWord.Bits.Type & 0x10) == 0)
puts_filtered("System selector ");
printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl);
if (info.HighWord.Bits.Granularity)
puts_filtered ("Page granular.\n");
else
puts_filtered ("Byte granular.\n");
return 1;
}
else
{
printf_filtered ("Invalid selector 0x%lx.\n",sel);
return 0;
}
}
static void
display_selectors (char * args, int from_tty)
{
if (!current_thread)
{
puts_filtered ("Impossible to display selectors now.\n");
return;
}
if (!args)
{
puts_filtered ("Selector $cs\n");
display_selector (current_thread->h,
current_thread->context.SegCs);
puts_filtered ("Selector $ds\n");
display_selector (current_thread->h,
current_thread->context.SegDs);
puts_filtered ("Selector $es\n");
display_selector (current_thread->h,
current_thread->context.SegEs);
puts_filtered ("Selector $ss\n");
display_selector (current_thread->h,
current_thread->context.SegSs);
puts_filtered ("Selector $fs\n");
display_selector (current_thread->h,
current_thread->context.SegFs);
puts_filtered ("Selector $gs\n");
display_selector (current_thread->h,
current_thread->context.SegGs);
}
else
{
int sel;
sel = parse_and_eval_long (args);
printf_filtered ("Selector \"%s\"\n",args);
display_selector (current_thread->h, sel);
}
}
static struct cmd_list_element *info_w32_cmdlist = NULL;
static void
info_w32_command (char *args, int from_tty)
{
help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
}
#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
static int
handle_exception (struct target_waitstatus *ourstatus)
{
thread_info *th;
DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode;
ourstatus->kind = TARGET_WAITKIND_STOPPED;
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;
{
char *fn;
if (find_pc_partial_function ((CORE_ADDR) current_event.u.Exception
.ExceptionRecord.ExceptionAddress,
&fn, NULL, NULL)
&& strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)
return 0;
}
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:
if (current_event.u.Exception.dwFirstChance)
return 0;
printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
current_event.u.Exception.ExceptionRecord.ExceptionCode,
(DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
break;
}
exception_count++;
last_sig = ourstatus->value.sig;
return 1;
}
static BOOL
child_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"));
res = ContinueDebugEvent (current_event.dwProcessId,
current_event.dwThreadId,
continue_status);
continue_status = 0;
if (res)
for (th = &thread_head; (th = th->next) != NULL;)
if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
{
for (i = 0; i < th->suspend_count; i++)
(void) ResumeThread (th->h);
th->suspend_count = 0;
if (debug_registers_changed)
{
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.Dr7 = dr[7];
CHECK (SetThreadContext (th->h, &th->context));
th->context.ContextFlags = 0;
}
}
debug_registers_changed = 0;
return res;
}
DWORD
fake_create_process (void)
{
current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
current_event.dwProcessId);
main_thread_id = current_event.dwThreadId;
current_thread = child_add_thread (main_thread_id,
current_event.u.CreateThread.hThread);
return main_thread_id;
}
static int
get_child_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;
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)
{
if (!saw_create && attach_flag)
{
retval = ourstatus->value.related_pid = fake_create_process ();
saw_create++;
}
break;
}
th = child_add_thread (current_event.dwThreadId,
current_event.u.CreateThread.hThread);
if (info_verbose)
printf_unfiltered ("[New %s]\n",
target_pid_to_str (
pid_to_ptid (current_event.dwThreadId)));
retval = current_event.dwThreadId;
break;
case EXIT_THREAD_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXIT_THREAD_DEBUG_EVENT"));
if (current_event.dwThreadId != main_thread_id)
{
child_delete_thread (current_event.dwThreadId);
th = &dummy_thread_info;
}
break;
case CREATE_PROCESS_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"CREATE_PROCESS_DEBUG_EVENT"));
CloseHandle (current_event.u.CreateProcessInfo.hFile);
if (++saw_create != 1)
{
CloseHandle (current_event.u.CreateProcessInfo.hProcess);
break;
}
current_process_handle = current_event.u.CreateProcessInfo.hProcess;
if (main_thread_id)
child_delete_thread (main_thread_id);
main_thread_id = current_event.dwThreadId;
th = child_add_thread (main_thread_id,
current_event.u.CreateProcessInfo.hThread);
retval = ourstatus->value.related_pid = current_event.dwThreadId;
break;
case EXIT_PROCESS_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXIT_PROCESS_DEBUG_EVENT"));
if (saw_create != 1)
break;
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
CloseHandle (current_process_handle);
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);
registers_changed ();
ourstatus->kind = TARGET_WAITKIND_LOADED;
ourstatus->value.integer = 0;
retval = main_thread_id;
re_enable_breakpoints_in_shlibs ();
break;
case UNLOAD_DLL_DEBUG_EVENT:
DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"UNLOAD_DLL_DEBUG_EVENT"));
if (saw_create != 1)
break;
catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
registers_changed ();
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;
if (handle_exception (ourstatus))
retval = current_event.dwThreadId;
else
continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case OUTPUT_DEBUG_STRING_EVENT:
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;
if (handle_output_debug_string (ourstatus))
retval = main_thread_id;
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)
CHECK (child_continue (continue_status, -1));
else
{
inferior_ptid = pid_to_ptid (retval);
current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
}
out:
return retval;
}
static ptid_t
child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
int pid = PIDGET (ptid);
while (1)
{
int retval = get_child_debug_event (pid, ourstatus);
if (retval)
return pid_to_ptid (retval);
else
{
int detach = 0;
if (deprecated_ui_loop_hook != NULL)
detach = deprecated_ui_loop_hook (0);
if (detach)
child_kill_inferior ();
}
}
}
static void
do_initial_child_stuff (DWORD pid)
{
extern int stop_after_trap;
int i;
last_sig = TARGET_SIGNAL_0;
event_count = 0;
exception_count = 0;
debug_registers_changed = 0;
debug_registers_used = 0;
for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
dr[i] = 0;
current_event.dwProcessId = pid;
memset (¤t_event, 0, sizeof (current_event));
push_target (&deprecated_child_ops);
disable_breakpoints_in_shlibs (1);
child_clear_solibs ();
clear_proceed_status ();
init_wait_for_inferior ();
target_terminal_init ();
target_terminal_inferior ();
while (1)
{
stop_after_trap = 1;
wait_for_inferior ();
if (stop_signal != TARGET_SIGNAL_TRAP)
resume (0, stop_signal);
else
break;
}
stop_after_trap = 0;
return;
}
static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
static int
has_detach_ability (void)
{
static HMODULE kernel32 = NULL;
if (!kernel32)
kernel32 = LoadLibrary ("kernel32.dll");
if (kernel32)
{
if (!DebugSetProcessKillOnExit)
DebugSetProcessKillOnExit = GetProcAddress (kernel32,
"DebugSetProcessKillOnExit");
if (!DebugActiveProcessStop)
DebugActiveProcessStop = GetProcAddress (kernel32,
"DebugActiveProcessStop");
if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
return 1;
}
return 0;
}
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)
return 0;
if (!advapi32)
{
if (!(advapi32 = LoadLibrary ("advapi32.dll")))
goto out;
if (!OpenProcessToken)
OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
if (!LookupPrivilegeValue)
LookupPrivilegeValue = GetProcAddress (advapi32,
"LookupPrivilegeValueA");
if (!AdjustTokenPrivileges)
AdjustTokenPrivileges = GetProcAddress (advapi32,
"AdjustTokenPrivileges");
if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
{
advapi32 = NULL;
goto out;
}
}
if (!OpenProcessToken (GetCurrentProcess (),
TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
&token_hdl))
goto out;
if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
goto out;
new_priv.PrivilegeCount = 1;
new_priv.Privileges[0].Luid = restore_priv;
new_priv.Privileges[0].Attributes = enable ? SE_PRIVILEGE_ENABLED : 0;
if (!AdjustTokenPrivileges (token_hdl, FALSE, &new_priv,
sizeof orig_priv, &orig_priv, &size))
goto out;
#if 0
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;
}
static void
child_attach (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);
child_init_thread_list ();
ok = DebugActiveProcess (pid);
saw_create = 0;
if (!ok)
{
pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
if (pid > 0)
ok = DebugActiveProcess (pid);
if (!ok)
error (_("Can't attach to process."));
}
if (has_detach_ability ())
DebugSetProcessKillOnExit (FALSE);
attach_flag = 1;
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_child_stuff (pid);
target_terminal_ours ();
}
static void
child_detach (char *args, int from_tty)
{
int detached = 1;
if (has_detach_ability ())
{
delete_command (NULL, 0);
child_continue (DBG_CONTINUE, -1);
if (!DebugActiveProcessStop (current_event.dwProcessId))
{
error (_("Can't detach process %lu (error %lu)"),
current_event.dwProcessId, GetLastError ());
detached = 0;
}
DebugSetProcessKillOnExit (FALSE);
}
if (detached && from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
current_event.dwProcessId);
gdb_flush (gdb_stdout);
}
inferior_ptid = null_ptid;
unpush_target (&deprecated_child_ops);
}
char *
child_pid_to_exec_file (int pid)
{
static char path[MAX_PATH + 1];
char *path_ptr = NULL;
int cpid;
struct external_pinfo *pinfo;
cygwin_internal (CW_LOCK_PINFO, 1000);
for (cpid = 0;
(pinfo = (struct external_pinfo *)
cygwin_internal (CW_GETPINFO, cpid | CW_NEXTPID));
cpid = pinfo->pid)
{
if (pinfo->dwProcessId == current_event.dwProcessId)
{
cygwin_conv_to_full_posix_path (pinfo->progname, path);
path_ptr = path;
break;
}
}
cygwin_internal (CW_UNLOCK_PINFO);
return path_ptr;
}
static void
child_files_info (struct target_ops *ignore)
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
}
static void
child_open (char *arg, int from_tty)
{
error (_("Use the \"run\" command to start a Unix child process."));
}
static void
child_create_inferior (char *exec_file, char *allargs, char **env,
int from_tty)
{
char *winenv;
char *temp;
int envlen;
int i;
STARTUPINFO si;
PROCESS_INFORMATION pi;
BOOL ret;
DWORD flags;
char *args;
char real_path[MAXPATHLEN];
char *toexec;
char shell[MAX_PATH + 1];
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);
if (!useshell)
{
flags = DEBUG_ONLY_THIS_PROCESS;
cygwin_conv_to_win32_path (exec_file, real_path);
toexec = real_path;
}
else
{
char *newallargs;
sh = getenv ("SHELL");
if (!sh)
sh = "/bin/sh";
cygwin_conv_to_win32_path (sh, shell);
newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
+ strlen (allargs) + 2);
sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
allargs = newallargs;
toexec = shell;
flags = DEBUG_PROCESS;
}
if (new_group)
flags |= CREATE_NEW_PROCESS_GROUP;
if (new_console)
flags |= CREATE_NEW_CONSOLE;
attach_flag = 0;
args = alloca (strlen (toexec) + strlen (allargs) + 2);
strcpy (args, toexec);
strcat (args, " ");
strcat (args, allargs);
{
static const char *conv_path_names[] =
{
"PATH=",
0
};
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 (cygwin_posix_path_list_p (env[i] + len))
envlen += len
+ cygwin_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);
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 (cygwin_posix_path_list_p (env[i] + len))
{
memcpy (temp, env[i], len);
cygwin_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;
}
*temp = 0;
}
if (!inferior_io_terminal)
tty = ostdin = ostdout = ostderr = -1;
else
{
tty = open (inferior_io_terminal, O_RDWR | O_NOCTTY);
if (tty < 0)
{
print_sys_errmsg (inferior_io_terminal, errno);
ostdin = ostdout = ostderr = -1;
}
else
{
ostdin = dup (0);
ostdout = dup (1);
ostderr = dup (2);
dup2 (tty, 0);
dup2 (tty, 1);
dup2 (tty, 2);
}
}
child_init_thread_list ();
ret = CreateProcess (0,
args,
NULL,
NULL,
TRUE,
flags,
winenv,
NULL,
&si,
&pi);
if (tty >= 0)
{
close (tty);
dup2 (ostdin, 0);
dup2 (ostdout, 1);
dup2 (ostderr, 2);
close (ostdin);
close (ostdout);
close (ostderr);
}
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_child_stuff (pi.dwProcessId);
proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
}
static void
child_mourn_inferior (void)
{
(void) child_continue (DBG_CONTINUE, -1);
i386_cleanup_dregs();
unpush_target (&deprecated_child_ops);
generic_mourn_inferior ();
}
static void
child_stop (void)
{
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
registers_changed ();
}
int
child_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
int write, struct mem_attrib *mem,
struct target_ops *target)
{
DWORD done = 0;
if (write)
{
DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
len, (DWORD) memaddr));
if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
len, &done))
done = 0;
FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
}
else
{
DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
len, (DWORD) memaddr));
if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
len, &done))
done = 0;
}
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));
if (current_thread && current_thread->h)
(void) CloseHandle (current_thread->h);
target_mourn_inferior ();
}
void
child_resume (ptid_t ptid, int step, enum target_signal sig)
{
thread_info *th;
DWORD continue_status = DBG_CONTINUE;
int pid = PIDGET (ptid);
if (sig != TARGET_SIGNAL_0)
{
if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
}
else if (sig == last_sig)
continue_status = DBG_EXCEPTION_NOT_HANDLED;
else
#if 0
{
int i;
for (i = 0; xlate[i].them != -1; i++)
if (xlate[i].us == sig)
{
current_event.u.Exception.ExceptionRecord.ExceptionCode =
xlate[i].them;
continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
}
if (continue_status == DBG_CONTINUE)
{
DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
}
}
#endif
DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
last_sig));
}
last_sig = TARGET_SIGNAL_0;
DEBUG_EXEC (("gdb: child_resume (pid=%d, step=%d, sig=%d);\n",
pid, step, sig));
th = thread_rec (current_event.dwThreadId, FALSE);
if (th)
{
if (step)
{
child_fetch_inferior_registers (PS_REGNUM);
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.Dr7 = dr[7];
}
CHECK (SetThreadContext (th->h, &th->context));
th->context.ContextFlags = 0;
}
}
child_continue (continue_status, pid);
}
static void
child_prepare_to_store (void)
{
}
static int
child_can_run (void)
{
return 1;
}
static void
child_close (int x)
{
DEBUG_EVENTS (("gdb: child_close, inferior_ptid=%d\n",
PIDGET (inferior_ptid)));
}
static void
init_child_ops (void)
{
deprecated_child_ops.to_shortname = "child";
deprecated_child_ops.to_longname = "Win32 child process";
deprecated_child_ops.to_doc = "Win32 child process (started by the \"run\" command).";
deprecated_child_ops.to_open = child_open;
deprecated_child_ops.to_close = child_close;
deprecated_child_ops.to_attach = child_attach;
deprecated_child_ops.to_detach = child_detach;
deprecated_child_ops.to_resume = child_resume;
deprecated_child_ops.to_wait = child_wait;
deprecated_child_ops.to_fetch_registers = child_fetch_inferior_registers;
deprecated_child_ops.to_store_registers = child_store_inferior_registers;
deprecated_child_ops.to_prepare_to_store = child_prepare_to_store;
deprecated_child_ops.deprecated_xfer_memory = child_xfer_memory;
deprecated_child_ops.to_files_info = child_files_info;
deprecated_child_ops.to_insert_breakpoint = memory_insert_breakpoint;
deprecated_child_ops.to_remove_breakpoint = memory_remove_breakpoint;
deprecated_child_ops.to_terminal_init = terminal_init_inferior;
deprecated_child_ops.to_terminal_inferior = terminal_inferior;
deprecated_child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
deprecated_child_ops.to_terminal_ours = terminal_ours;
deprecated_child_ops.to_terminal_save_ours = terminal_save_ours;
deprecated_child_ops.to_terminal_info = child_terminal_info;
deprecated_child_ops.to_kill = child_kill_inferior;
deprecated_child_ops.to_create_inferior = child_create_inferior;
deprecated_child_ops.to_mourn_inferior = child_mourn_inferior;
deprecated_child_ops.to_can_run = child_can_run;
deprecated_child_ops.to_thread_alive = win32_child_thread_alive;
deprecated_child_ops.to_pid_to_str = cygwin_pid_to_str;
deprecated_child_ops.to_stop = child_stop;
deprecated_child_ops.to_stratum = process_stratum;
deprecated_child_ops.to_has_all_memory = 1;
deprecated_child_ops.to_has_memory = 1;
deprecated_child_ops.to_has_stack = 1;
deprecated_child_ops.to_has_registers = 1;
deprecated_child_ops.to_has_execution = 1;
deprecated_child_ops.to_magic = OPS_MAGIC;
deprecated_child_ops.to_pid_to_exec_file = child_pid_to_exec_file;
}
void
_initialize_win32_nat (void)
{
struct cmd_list_element *c;
init_child_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);
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,
&setlist, &showlist);
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,
&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,
&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,
&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,
&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,
&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,
&setlist, &showlist);
add_info ("dll", info_dll_command, _("Status of loaded DLLs."));
add_info_alias ("sharedlibrary", "dll", 1);
add_prefix_cmd ("w32", class_info, info_w32_command,
_("Print information specific to Win32 debugging."),
&info_w32_cmdlist, "info w32 ", 0, &infolist);
add_cmd ("selector", class_info, display_selectors,
_("Display selectors infos."),
&info_w32_cmdlist);
add_target (&deprecated_child_ops);
}
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;
}
void
cygwin_set_dr7 (unsigned val)
{
dr[7] = val;
debug_registers_changed = 1;
debug_registers_used = 1;
}
unsigned
cygwin_get_dr6 (void)
{
return dr[6];
}
static int
win32_child_thread_alive (ptid_t ptid)
{
int pid = PIDGET (ptid);
return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
FALSE : TRUE;
}
char *
cygwin_pid_to_str (ptid_t ptid)
{
static char buf[80];
int pid = PIDGET (ptid);
if ((DWORD) pid == current_event.dwProcessId)
sprintf (buf, "process %d", pid);
else
sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
return buf;
}
static int
core_dll_symbols_add (char *dll_name, DWORD base_addr)
{
struct objfile *objfile;
char *objfile_basename;
const char *dll_basename;
if (!(dll_basename = strrchr (dll_name, '/')))
dll_basename = dll_name;
else
dll_basename++;
ALL_OBJFILES (objfile)
{
objfile_basename = strrchr (objfile->name, '/');
if (objfile_basename &&
strcmp (dll_basename, objfile_basename + 1) == 0)
{
printf_unfiltered ("%08lx:%s (symbols previously loaded)\n",
base_addr, dll_name);
goto out;
}
}
register_loaded_dll (dll_name, base_addr + 0x1000);
solib_symbols_add (dll_name, 0, (CORE_ADDR) base_addr + 0x1000);
out:
return 1;
}
typedef struct
{
struct target_ops *target;
bfd_vma addr;
} map_code_section_args;
static void
map_single_dll_code_section (bfd * abfd, asection * sect, void *obj)
{
int old;
int update_coreops;
struct section_table *new_target_sect_ptr;
map_code_section_args *args = (map_code_section_args *) obj;
struct target_ops *target = args->target;
if (sect->flags & SEC_CODE)
{
update_coreops = core_ops.to_sections == target->to_sections;
if (target->to_sections)
{
old = target->to_sections_end - target->to_sections;
target->to_sections = (struct section_table *)
xrealloc ((char *) target->to_sections,
(sizeof (struct section_table)) * (1 + old));
}
else
{
old = 0;
target->to_sections = (struct section_table *)
xmalloc ((sizeof (struct section_table)));
}
target->to_sections_end = target->to_sections + (1 + old);
if (update_coreops)
{
core_ops.to_sections = target->to_sections;
core_ops.to_sections_end = target->to_sections_end;
}
new_target_sect_ptr = target->to_sections + old;
new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
bfd_section_size (abfd, sect);;
new_target_sect_ptr->the_bfd_section = sect;
new_target_sect_ptr->bfd = abfd;
}
}
static int
dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
{
bfd *dll_bfd;
map_code_section_args map_args;
asection *lowest_sect;
char *name;
if (dll_name == NULL || target == NULL)
return 0;
name = xstrdup (dll_name);
dll_bfd = bfd_openr (name, "pei-i386");
if (dll_bfd == NULL)
return 0;
if (bfd_check_format (dll_bfd, bfd_object))
{
lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
if (lowest_sect == NULL)
return 0;
map_args.target = target;
map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
}
return 1;
}
static void
core_section_load_dll_symbols (bfd * abfd, asection * sect, void *obj)
{
struct target_ops *target = (struct target_ops *) obj;
DWORD base_addr;
int dll_name_size;
char *dll_name = NULL;
char *buf = NULL;
struct win32_pstatus *pstatus;
char *p;
if (strncmp (sect->name, ".module", 7))
return;
buf = (char *) xmalloc (bfd_get_section_size (sect) + 1);
if (!buf)
{
printf_unfiltered ("memory allocation failed for %s\n", sect->name);
goto out;
}
if (!bfd_get_section_contents (abfd, sect, buf, 0, bfd_get_section_size (sect)))
goto out;
pstatus = (struct win32_pstatus *) buf;
memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
dll_name_size = pstatus->data.module_info.module_name_size;
if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > bfd_get_section_size (sect))
goto out;
dll_name = (char *) xmalloc (dll_name_size + 1);
if (!dll_name)
{
printf_unfiltered ("memory allocation failed for %s\n", sect->name);
goto out;
}
strncpy (dll_name, pstatus->data.module_info.module_name, dll_name_size);
while ((p = strchr (dll_name, '\\')))
*p = '/';
if (!core_dll_symbols_add (dll_name, (DWORD) base_addr))
printf_unfiltered ("%s: Failed to load dll symbols.\n", dll_name);
if (!dll_code_sections_add (dll_name, (DWORD) base_addr + 0x1000, target))
printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
out:
if (buf)
xfree (buf);
if (dll_name)
xfree (dll_name);
return;
}
void
child_solib_add (char *filename, int from_tty, struct target_ops *target,
int readsyms)
{
if (!readsyms)
return;
if (core_bfd)
{
child_clear_solibs ();
bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols, target);
}
else
{
if (solib_end && solib_end->name)
solib_end->objfile = solib_symbols_add (solib_end->name, from_tty,
solib_end->load_addr);
}
}
static void
fetch_elf_core_registers (char *core_reg_sect,
unsigned core_reg_size,
int which,
CORE_ADDR reg_addr)
{
int r;
if (core_reg_size < sizeof (CONTEXT))
{
error (_("Core file register section too small (%u bytes)."), core_reg_size);
return;
}
for (r = 0; r < NUM_REGS; r++)
regcache_raw_supply (current_regcache, r, core_reg_sect + mappings[r]);
}
static struct core_fns win32_elf_core_fns =
{
bfd_target_elf_flavour,
default_check_format,
default_core_sniffer,
fetch_elf_core_registers,
NULL
};
void
_initialize_core_win32 (void)
{
deprecated_add_core_fns (&win32_elf_core_fns);
}
void
_initialize_check_for_gdb_ini (void)
{
char *homedir;
if (inhibit_gdbinit)
return;
homedir = getenv ("HOME");
if (homedir)
{
char *p;
char *oldini = (char *) alloca (strlen (homedir) +
sizeof ("/gdb.ini"));
strcpy (oldini, homedir);
p = strchr (oldini, '\0');
if (p > oldini && p[-1] != '/')
*p++ = '/';
strcpy (p, "gdb.ini");
if (access (oldini, 0) == 0)
{
int len = strlen (oldini);
char *newini = alloca (len + 1);
sprintf (newini, "%.*s.gdbinit",
(int) (len - (sizeof ("gdb.ini") - 1)), oldini);
warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
}
}
}