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/*
* Win32 relay and snoop functions
*
* Copyright 1997 Alexandre Julliard
* Copyright 1998 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(relay);
#if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
struct relay_descr /* descriptor for a module */
{
ULONG_PTR magic; /* signature */
void *relay_call; /* functions to call from relay thunks */
void *private; /* reserved for the relay code private data */
const char *entry_point_base; /* base address of entry point thunks */
const unsigned int *entry_point_offsets; /* offsets of entry points thunks */
const char *args_string; /* string describing the arguments */
};
struct relay_descr_rva /* RVA to the descriptor for PE dlls */
{
DWORD magic;
DWORD descr;
};
#define RELAY_DESCR_MAGIC 0xdeb90002
#define IS_INTARG(x) (((ULONG_PTR)(x) >> 16) == 0)
/* private data built at dll load time */
struct relay_entry_point
{
void *orig_func; /* original entry point function */
const char *name; /* function name (if any) */
};
struct relay_private_data
{
HMODULE module; /* module handle of this dll */
unsigned int base; /* ordinal base */
char dllname[40]; /* dll name (without .dll extension) */
struct relay_entry_point entry_points[1]; /* list of dll entry points */
};
static const WCHAR **debug_relay_excludelist;
static const WCHAR **debug_relay_includelist;
static const WCHAR **debug_snoop_excludelist;
static const WCHAR **debug_snoop_includelist;
static const WCHAR **debug_from_relay_excludelist;
static const WCHAR **debug_from_relay_includelist;
static const WCHAR **debug_from_snoop_excludelist;
static const WCHAR **debug_from_snoop_includelist;
static RTL_RUN_ONCE init_once = RTL_RUN_ONCE_INIT;
/* compare an ASCII and a Unicode string without depending on the current codepage */
static inline int strcmpAW( const char *strA, const WCHAR *strW )
{
while (*strA && ((unsigned char)*strA == *strW)) { strA++; strW++; }
return (unsigned char)*strA - *strW;
}
/***********************************************************************
* build_list
*
* Build a function list from a ';'-separated string.
*/
static const WCHAR **build_list( const WCHAR *buffer )
{
int count = 1;
const WCHAR *p = buffer;
const WCHAR **ret;
while ((p = wcschr( p, ';' )))
{
count++;
p++;
}
/* allocate count+1 pointers, plus the space for a copy of the string */
if ((ret = RtlAllocateHeap( GetProcessHeap(), 0,
(count+1) * sizeof(WCHAR*) + (wcslen(buffer)+1) * sizeof(WCHAR) )))
{
WCHAR *str = (WCHAR *)(ret + count + 1);
WCHAR *q = str;
wcscpy( str, buffer );
count = 0;
for (;;)
{
ret[count++] = q;
if (!(q = wcschr( q, ';' ))) break;
*q++ = 0;
}
ret[count++] = NULL;
}
return ret;
}
/***********************************************************************
* load_list_value
*
* Load a function list from a registry value.
*/
static const WCHAR **load_list( HKEY hkey, const WCHAR *value )
{
char initial_buffer[4096];
char *buffer = initial_buffer;
DWORD count;
NTSTATUS status;
UNICODE_STRING name;
const WCHAR **list = NULL;
RtlInitUnicodeString( &name, value );
status = NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, sizeof(initial_buffer), &count );
if (status == STATUS_BUFFER_OVERFLOW)
{
buffer = RtlAllocateHeap( GetProcessHeap(), 0, count );
status = NtQueryValueKey( hkey, &name, KeyValuePartialInformation, buffer, count, &count );
}
if (status == STATUS_SUCCESS)
{
WCHAR *str = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)buffer)->Data;
list = build_list( str );
if (list) TRACE( "%s = %s\n", debugstr_w(value), debugstr_w(str) );
}
if (buffer != initial_buffer) RtlFreeHeap( GetProcessHeap(), 0, buffer );
return list;
}
/***********************************************************************
* init_debug_lists
*
* Build the relay include/exclude function lists.
*/
static DWORD WINAPI init_debug_lists( RTL_RUN_ONCE *once, void *param, void **context )
{
OBJECT_ATTRIBUTES attr;
UNICODE_STRING name;
HANDLE root, hkey;
RtlOpenCurrentUser( KEY_ALL_ACCESS, &root );
attr.Length = sizeof(attr);
attr.RootDirectory = root;
attr.ObjectName = &name;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &name, L"Software\\Wine\\Debug" );
/* @@ Wine registry key: HKCU\Software\Wine\Debug */
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr )) hkey = 0;
NtClose( root );
if (!hkey) return TRUE;
debug_relay_includelist = load_list( hkey, L"RelayInclude" );
debug_relay_excludelist = load_list( hkey, L"RelayExclude" );
debug_snoop_includelist = load_list( hkey, L"SnoopInclude" );
debug_snoop_excludelist = load_list( hkey, L"SnoopExclude" );
debug_from_relay_includelist = load_list( hkey, L"RelayFromInclude" );
debug_from_relay_excludelist = load_list( hkey, L"RelayFromExclude" );
debug_from_snoop_includelist = load_list( hkey, L"SnoopFromInclude" );
debug_from_snoop_excludelist = load_list( hkey, L"SnoopFromExclude" );
NtClose( hkey );
return TRUE;
}
/***********************************************************************
* check_list
*
* Check if a given module and function is in the list.
*/
static BOOL check_list( const WCHAR *module, int ordinal, const char *func, const WCHAR *const *list )
{
char ord_str[10];
sprintf( ord_str, "%d", ordinal );
for(; *list; list++)
{
const WCHAR *p = wcsrchr( *list, '.' );
if (p && p > *list) /* check module and function */
{
int len = p - *list;
if (wcsnicmp( module, *list, len - 1 ) || module[len]) continue;
if (p[1] == '*' && !p[2]) return TRUE;
if (!strcmpAW( ord_str, p + 1 )) return TRUE;
if (func && !strcmpAW( func, p + 1 )) return TRUE;
}
else /* function only */
{
if (func && !strcmpAW( func, *list )) return TRUE;
}
}
return FALSE;
}
/***********************************************************************
* check_relay_include
*
* Check if a given function must be included in the relay output.
*/
static BOOL check_relay_include( const WCHAR *module, int ordinal, const char *func )
{
if (debug_relay_excludelist && check_list( module, ordinal, func, debug_relay_excludelist ))
return FALSE;
if (debug_relay_includelist && !check_list( module, ordinal, func, debug_relay_includelist ))
return FALSE;
return TRUE;
}
/***********************************************************************
* check_from_module
*
* Check if calls from a given module must be included in the relay/snoop output,
* given the exclusion and inclusion lists.
*/
static BOOL check_from_module( const WCHAR **includelist, const WCHAR **excludelist, const WCHAR *module )
{
const WCHAR **listitem;
BOOL show;
if (!module) return TRUE;
if (!includelist && !excludelist) return TRUE;
if (excludelist)
{
show = TRUE;
listitem = excludelist;
}
else
{
show = FALSE;
listitem = includelist;
}
for(; *listitem; listitem++)
{
int len;
if (!wcsicmp( *listitem, module )) return !show;
len = wcslen( *listitem );
if (!wcsnicmp( *listitem, module, len ) && !wcsicmp( module + len, L".dll" ))
return !show;
}
return show;
}
static BOOL is_ret_val( char type )
{
return type >= 'A' && type <= 'Z';
}
static const char *func_name( struct relay_private_data *data, unsigned int ordinal )
{
struct relay_entry_point *entry_point = data->entry_points + ordinal;
if (entry_point->name)
return wine_dbg_sprintf( "%s.%s", data->dllname, entry_point->name );
else
return wine_dbg_sprintf( "%s.%u", data->dllname, data->base + ordinal );
}
static void trace_string_a( INT_PTR ptr )
{
if (!IS_INTARG( ptr )) TRACE( "%08Ix %s", ptr, debugstr_a( (char *)ptr ));
else TRACE( "%08Ix", ptr );
}
static void trace_string_w( INT_PTR ptr )
{
if (!IS_INTARG( ptr )) TRACE( "%08Ix %s", ptr, debugstr_w( (WCHAR *)ptr ));
else TRACE( "%08Ix", ptr );
}
#ifdef __i386__
/***********************************************************************
* relay_trace_entry
*/
DECLSPEC_HIDDEN void * WINAPI relay_trace_entry( struct relay_descr *descr, unsigned int idx,
const DWORD *stack, unsigned int *nb_args )
{
WORD ordinal = LOWORD(idx);
const char *arg_types = descr->args_string + HIWORD(idx);
struct relay_private_data *data = descr->private;
struct relay_entry_point *entry_point = data->entry_points + ordinal;
unsigned int i, pos;
TRACE( "\1Call %s(", func_name( data, ordinal ));
for (i = pos = 0; !is_ret_val( arg_types[i] ); i++)
{
switch (arg_types[i])
{
case 'j': /* int64 */
TRACE( "%x%08x", stack[pos+1], stack[pos] );
pos += 2;
break;
case 'k': /* int128 */
TRACE( "{%08x,%08x,%08x,%08x}", stack[pos], stack[pos+1], stack[pos+2], stack[pos+3] );
pos += 4;
break;
case 's': /* str */
trace_string_a( stack[pos++] );
break;
case 'w': /* wstr */
trace_string_w( stack[pos++] );
break;
case 'f': /* float */
TRACE( "%g", *(const float *)&stack[pos++] );
break;
case 'd': /* double */
TRACE( "%g", *(const double *)&stack[pos] );
pos += 2;
break;
case 'i': /* long */
default:
TRACE( "%08x", stack[pos++] );
break;
}
if (!is_ret_val( arg_types[i+1] )) TRACE( "," );
}
*nb_args = pos;
if (arg_types[0] == 't')
{
*nb_args |= 0x80000000; /* thiscall/fastcall */
if (arg_types[1] == 't') *nb_args |= 0x40000000; /* fastcall */
}
TRACE( ") ret=%08x\n", stack[-1] );
return entry_point->orig_func;
}
/***********************************************************************
* relay_trace_exit
*/
DECLSPEC_HIDDEN void WINAPI relay_trace_exit( struct relay_descr *descr, unsigned int idx,
void *retaddr, LONGLONG retval )
{
const char *arg_types = descr->args_string + HIWORD(idx);
TRACE( "\1Ret %s()", func_name( descr->private, LOWORD(idx) ));
while (!is_ret_val( *arg_types )) arg_types++;
if (*arg_types == 'J') /* int64 return value */
TRACE( " retval=%08x%08x ret=%08x\n",
(UINT)(retval >> 32), (UINT)retval, (UINT)retaddr );
else
TRACE( " retval=%08x ret=%08x\n", (UINT)retval, (UINT)retaddr );
}
extern LONGLONG WINAPI relay_call( struct relay_descr *descr, unsigned int idx );
__ASM_STDCALL_FUNC( relay_call, 8,
"pushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"movl %esp,%ebp\n\t"
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
"pushl %esi\n\t"
__ASM_CFI(".cfi_rel_offset %esi,-4\n\t")
"pushl %edi\n\t"
__ASM_CFI(".cfi_rel_offset %edi,-8\n\t")
"pushl %ecx\n\t"
__ASM_CFI(".cfi_rel_offset %ecx,-12\n\t")
/* trace the parameters */
"pushl %eax\n\t"
"pushl %esp\n\t" /* number of args return ptr */
"leal 20(%ebp),%esi\n\t" /* stack */
"pushl %esi\n\t"
"pushl 12(%ebp)\n\t"
"pushl 8(%ebp)\n\t"
"call " __ASM_STDCALL("relay_trace_entry",16) "\n\t"
/* copy the arguments*/
"movzwl -16(%ebp),%ecx\n\t" /* number of args */
"jecxz 1f\n\t"
"leal 0(,%ecx,4),%edx\n\t"
"subl %edx,%esp\n\t"
"andl $~15,%esp\n\t"
"movl %esp,%edi\n\t"
"cld\n\t"
"rep; movsl\n\t"
"testl $0x80000000,-16(%ebp)\n\t" /* thiscall */
"jz 1f\n\t"
"popl %ecx\n\t"
"testl $0x40000000,-16(%ebp)\n\t" /* fastcall */
"jz 1f\n\t"
"popl %edx\n"
/* call the entry point */
"1:\tcall *%eax\n\t"
"movl %eax,%esi\n\t"
"movl %edx,%edi\n\t"
/* trace the return value */
"leal -20(%ebp),%esp\n\t"
"pushl %edx\n\t"
"pushl %eax\n\t"
"pushl 16(%ebp)\n\t"
"pushl 12(%ebp)\n\t"
"pushl 8(%ebp)\n\t"
"call " __ASM_STDCALL("relay_trace_exit",20) "\n\t"
/* restore return value and return */
"leal -12(%ebp),%esp\n\t"
"movl %esi,%eax\n\t"
"movl %edi,%edx\n\t"
"popl %ecx\n\t"
__ASM_CFI(".cfi_same_value %ecx\n\t")
"popl %edi\n\t"
__ASM_CFI(".cfi_same_value %edi\n\t")
"popl %esi\n\t"
__ASM_CFI(".cfi_same_value %esi\n\t")
"popl %ebp\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret $8" )
#elif defined(__arm__)
/***********************************************************************
* relay_trace_entry
*/
DECLSPEC_HIDDEN void * WINAPI relay_trace_entry( struct relay_descr *descr, unsigned int idx,
const DWORD *stack, unsigned int *nb_args )
{
WORD ordinal = LOWORD(idx);
const char *arg_types = descr->args_string + HIWORD(idx);
struct relay_private_data *data = descr->private;
struct relay_entry_point *entry_point = data->entry_points + ordinal;
unsigned int i, pos;
#ifndef __SOFTFP__
unsigned int float_pos = 0, double_pos = 0;
const union fpregs { float s[16]; double d[8]; } *fpstack = (const union fpregs *)stack - 1;
#endif
TRACE( "\1Call %s(", func_name( data, ordinal ));
for (i = pos = 0; !is_ret_val( arg_types[i] ); i++)
{
switch (arg_types[i])
{
case 'j': /* int64 */
pos = (pos + 1) & ~1;
TRACE( "%x%08x", stack[pos+1], stack[pos] );
pos += 2;
break;
case 'k': /* int128 */
TRACE( "{%08x,%08x,%08x,%08x}", stack[pos], stack[pos+1], stack[pos+2], stack[pos+3] );
pos += 4;
break;
case 's': /* str */
trace_string_a( stack[pos++] );
break;
case 'w': /* wstr */
trace_string_w( stack[pos++] );
break;
case 'f': /* float */
#ifndef __SOFTFP__
if (!(float_pos % 2)) float_pos = max( float_pos, double_pos * 2 );
if (float_pos < 16)
{
TRACE( "%g", fpstack->s[float_pos++] );
break;
}
#endif
TRACE( "%g", *(const float *)&stack[pos++] );
break;
case 'd': /* double */
#ifndef __SOFTFP__
double_pos = max( (float_pos + 1) / 2, double_pos );
if (double_pos < 8)
{
TRACE( "%g", fpstack->d[double_pos++] );
break;
}
#endif
pos = (pos + 1) & ~1;
TRACE( "%g", *(const double *)&stack[pos] );
pos += 2;
break;
case 'i': /* long */
default:
TRACE( "%08x", stack[pos++] );
break;
}
if (!is_ret_val( arg_types[i+1] )) TRACE( "," );
}
#ifndef __SOFTFP__
if (float_pos || double_pos)
{
pos |= 0x80000000;
stack = (const DWORD *)fpstack; /* retaddr is below the fp regs */
}
#endif
*nb_args = pos;
TRACE( ") ret=%08x\n", stack[-1] );
return entry_point->orig_func;
}
/***********************************************************************
* relay_trace_exit
*/
DECLSPEC_HIDDEN void WINAPI relay_trace_exit( struct relay_descr *descr, unsigned int idx,
DWORD retaddr, LONGLONG retval )
{
const char *arg_types = descr->args_string + HIWORD(idx);
TRACE( "\1Ret %s()", func_name( descr->private, LOWORD(idx) ));
while (!is_ret_val( *arg_types )) arg_types++;
if (*arg_types == 'J') /* int64 return value */
TRACE( " retval=%08x%08x ret=%08x\n",
(UINT)(retval >> 32), (UINT)retval, retaddr );
else
TRACE( " retval=%08x ret=%08x\n", (UINT)retval, retaddr );
}
extern LONGLONG WINAPI relay_call( struct relay_descr *descr, unsigned int idx, const DWORD *stack );
__ASM_GLOBAL_FUNC( relay_call,
".arm\n\t"
"push {r4-r8,lr}\n\t"
"sub sp, #16\n\t"
"mov r6, r2\n\t"
"add r3, sp, #12\n\t"
"mov r7, r0\n\t"
"mov r8, r1\n\t"
"bl " __ASM_NAME("relay_trace_entry") "\n\t"
"mov ip, r0\n\t" /* entry point */
"mov r5, sp\n\t"
"ldr r1, [sp, #12]\n\t" /* number of args */
"lsl r3, r1, #2\n\t"
"subs r3, #16\n\t" /* first 4 args are in registers */
"ble 2f\n\t"
"sub sp, r3\n\t"
"and sp, #~7\n"
"add r2, r6, #16\n\t" /* skip r0-r3 */
"1:\tsubs r3, r3, #4\n\t"
"ldr r0, [r2, r3]\n\t"
"str r0, [sp, r3]\n\t"
"bgt 1b\n"
"2:\t"
#ifndef __SOFTFP__
"tst r1, #0x80000000\n\t"
"ldm r6, {r0-r3}\n\t"
"vldmdbne r6!, {s0-s15}\n\t"
#else
"ldm r6, {r0-r3}\n\t"
#endif
"blx ip\n\t"
"mov sp, r5\n\t"
"ldr r2, [r6, #-4]\n\t" /* retaddr */
"mov r4, r0\n\t"
"mov r5, r1\n\t"
"mov r0, r7\n\t"
"mov r1, r8\n\t"
"str r4, [sp]\n\t"
"str r5, [sp, #4]\n\t"
#ifndef __SOFTFP__
"vstr d0, [sp, #8]\n\t" /* preserve floating point retval */
"bl " __ASM_NAME("relay_trace_exit") "\n\t"
"vldr d0, [sp, #8]\n\t"
#else
"bl " __ASM_NAME("relay_trace_exit") "\n\t"
#endif
"mov r0, r4\n\t"
"mov r1, r5\n\t"
"add sp, #16\n\t"
"pop {r4-r8,pc}" )
#elif defined(__aarch64__)
/***********************************************************************
* relay_trace_entry
*/
DECLSPEC_HIDDEN void * WINAPI relay_trace_entry( struct relay_descr *descr, unsigned int idx,
const INT_PTR *stack, unsigned int *nb_args )
{
WORD ordinal = LOWORD(idx);
const char *arg_types = descr->args_string + HIWORD(idx);
struct relay_private_data *data = descr->private;
struct relay_entry_point *entry_point = data->entry_points + ordinal;
unsigned int i;
TRACE( "\1Call %s(", func_name( data, ordinal ));
for (i = 0; !is_ret_val( arg_types[i] ); i++)
{
switch (arg_types[i])
{
case 's': /* str */
trace_string_a( stack[i] );
break;
case 'w': /* wstr */
trace_string_w( stack[i] );
break;
case 'i': /* long */
default:
TRACE( "%08zx", stack[i] );
break;
}
if (!is_ret_val( arg_types[i + 1] )) TRACE( "," );
}
*nb_args = i;
TRACE( ") ret=%08zx\n", stack[-1] );
return entry_point->orig_func;
}
/***********************************************************************
* relay_trace_exit
*/
DECLSPEC_HIDDEN void WINAPI relay_trace_exit( struct relay_descr *descr, unsigned int idx,
INT_PTR retaddr, INT_PTR retval )
{
TRACE( "\1Ret %s() retval=%08zx ret=%08zx\n",
func_name( descr->private, LOWORD(idx) ), retval, retaddr );
}
extern LONGLONG CDECL call_entry_point( void *func, int nb_args, const INT_PTR *args );
__ASM_GLOBAL_FUNC( call_entry_point,
"stp x29, x30, [SP,#-16]!\n\t"
"stp x19, x20, [SP,#-16]!\n\t"
"mov x29, SP\n\t"
"mov x19, x2\n\t"
"ldp x8, x9, [x19, #-32]\n\t"
"mov x9, x0\n\t"
"cbz w1, 2f\n\t"
"mov w10, w1\n\t"
"mov x11, x2\n\t"
"mov x12, #0\n\t"
"ldp x0, x1, [x11], #16\n\t"
"add w12, w12, #2\n\t"
"cmp w12, w10\n\t"
"b.hs 2f\n\t"
"ldp x2, x3, [x11], #16\n\t"
"add w12, w12, #2\n\t"
"cmp w12, w10\n\t"
"b.hs 2f\n\t"
"ldp x4, x5, [x11], #16\n\t"
"add w12, w12, #2\n\t"
"cmp w12, w10\n\t"
"b.hs 2f\n\t"
"ldp x6, x7, [x11], #16\n\t"
"add w12, w12, #2\n\t"
"cmp w12, w10\n\t"
"b.hs 2f\n\t"
"sub w12, w10, #8\n\t"
"lsl w12, w12, #3\n\t"
"sub SP, SP, w12, uxtw\n\t"
"tbz w12, #3, 1f\n\t"
"sub SP, SP, #8\n\t"
"1: sub w12, w12, #8\n\t"
"ldr x13, [x11, x12]\n\t"
"str x13, [SP, x12]\n\t"
"cbnz w12, 1b\n\t"
"2: blr x9\n\t"
"mov SP, x29\n\t"
"ldp x19, x20, [SP], #16\n\t"
"ldp x29, x30, [SP], #16\n\t"
"ret\n" )
static LONGLONG WINAPI relay_call( struct relay_descr *descr, unsigned int idx, const INT_PTR *stack )
{
unsigned int nb_args;
void *func = relay_trace_entry( descr, idx, stack, &nb_args );
LONGLONG ret = call_entry_point( func, nb_args, stack );
relay_trace_exit( descr, idx, stack[-1], ret );
return ret;
}
#elif defined(__x86_64__)
/***********************************************************************
* relay_trace_entry
*/
DECLSPEC_HIDDEN void * WINAPI relay_trace_entry( struct relay_descr *descr, unsigned int idx,
const INT_PTR *stack, unsigned int *nb_args )
{
WORD ordinal = LOWORD(idx);
const char *arg_types = descr->args_string + HIWORD(idx);
struct relay_private_data *data = descr->private;
struct relay_entry_point *entry_point = data->entry_points + ordinal;
unsigned int i;
TRACE( "\1Call %s(", func_name( data, ordinal ));
for (i = 0; !is_ret_val( arg_types[i] ); i++)
{
switch (arg_types[i])
{
case 's': /* str */
trace_string_a( stack[i] );
break;
case 'w': /* wstr */
trace_string_w( stack[i] );
break;
case 'f': /* float */
TRACE( "%g", *(const float *)&stack[i] );
break;
case 'd': /* double */
TRACE( "%g", *(const double *)&stack[i] );
break;
case 'i': /* long */
default:
TRACE( "%08zx", stack[i] );
break;
}
if (!is_ret_val( arg_types[i+1] )) TRACE( "," );
}
*nb_args = i;
TRACE( ") ret=%08zx\n", stack[-1] );
return entry_point->orig_func;
}
/***********************************************************************
* relay_trace_exit
*/
DECLSPEC_HIDDEN void WINAPI relay_trace_exit( struct relay_descr *descr, unsigned int idx,
INT_PTR retaddr, INT_PTR retval )
{
TRACE( "\1Ret %s() retval=%08zx ret=%08zx\n",
func_name( descr->private, LOWORD(idx) ), retval, retaddr );
}
extern INT_PTR WINAPI relay_call( struct relay_descr *descr, unsigned int idx, const INT_PTR *stack );
__ASM_GLOBAL_FUNC( relay_call,
"pushq %rbp\n\t"
__ASM_SEH(".seh_pushreg %rbp\n\t")
__ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
__ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
"movq %rsp,%rbp\n\t"
__ASM_SEH(".seh_setframe %rbp,0\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
"leaq -0x48(%rbp),%rsp\n\t"
"andq $~15,%rsp\n\t"
"movq %rcx,-32(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rcx,-32\n\t")
"movq %rdx,-24(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rdx,-24\n\t")
"movq %rsi,-16(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rsi,-16\n\t")
"movq %rdi,-8(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rdi,-8\n\t")
/* trace the parameters */
"leaq 24(%rbp),%r8\n\t" /* stack */
"leaq -40(%rbp),%r9\n\t"
"call " __ASM_NAME("relay_trace_entry") "\n\t"
/* copy the arguments */
"movl -40(%rbp),%edx\n\t" /* number of args */
"movq $4,%rcx\n\t"
"cmp %rcx,%rdx\n\t"
"cmovgq %rdx,%rcx\n\t"
"leaq -16(,%rcx,8),%rdx\n\t"
"andq $~15,%rdx\n\t"
"subq %rdx,%rsp\n\t"
"leaq 24(%rbp),%rsi\n\t" /* original stack */
"movq %rsp,%rdi\n\t"
"rep; movsq\n\t"
/* call the entry point */
"movq 0(%rsp),%rcx\n\t"
"movq 8(%rsp),%rdx\n\t"
"movq 16(%rsp),%r8\n\t"
"movq 24(%rsp),%r9\n\t"
"movq 0(%rsp),%xmm0\n\t"
"movq 8(%rsp),%xmm1\n\t"
"movq 16(%rsp),%xmm2\n\t"
"movq 24(%rsp),%xmm3\n\t"
"callq *%rax\n\t"
/* trace the return value */
"movq -32(%rbp),%rcx\n\t"
"movq -24(%rbp),%rdx\n\t"
"movq 16(%rbp),%r8\n\t" /* retaddr */
"movq %rax,%rsi\n\t"
"movaps %xmm0,32(%rsp)\n\t"
"movq %rax,%r9\n\t"
"call " __ASM_NAME("relay_trace_exit") "\n\t"
/* restore return value and return */
"movq %rsi,%rax\n\t"
"movaps 32(%rsp),%xmm0\n\t"
"movq -16(%rbp),%rsi\n\t"
__ASM_CFI(".cfi_same_value %rsi\n\t")
"movq -8(%rbp),%rdi\n\t"
__ASM_CFI(".cfi_same_value %rdi\n\t")
"leaq 0(%rbp),%rsp\n\t"
__ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
"popq %rbp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
__ASM_CFI(".cfi_same_value %rbp\n\t")
"ret")
#else
#error Not supported on this CPU
#endif
static struct relay_descr *get_relay_descr( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size )
{
struct relay_descr *descr;
struct relay_descr_rva *rva;
ULONG_PTR ptr = (ULONG_PTR)module + exports->Name;
/* sanity checks */
if (ptr <= (ULONG_PTR)(exports + 1)) return NULL;
if (ptr > (ULONG_PTR)exports + exp_size) return NULL;
if (ptr % sizeof(DWORD)) return NULL;
rva = (struct relay_descr_rva *)ptr - 1;
if (rva->magic != RELAY_DESCR_MAGIC) return NULL;
if (rva->descr) descr = (struct relay_descr *)((char *)module + rva->descr);
else descr = (struct relay_descr *)((const char *)exports + exp_size);
if (descr->magic != RELAY_DESCR_MAGIC) return NULL;
return descr;
}
/***********************************************************************
* RELAY_GetProcAddress
*
* Return the proc address to use for a given function.
*/
FARPROC RELAY_GetProcAddress( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, FARPROC proc, DWORD ordinal, const WCHAR *user )
{
struct relay_private_data *data;
const struct relay_descr *descr = get_relay_descr( module, exports, exp_size );
if (!descr || !(data = descr->private)) return proc; /* no relay data */
if (!data->entry_points[ordinal].orig_func) return proc; /* not a relayed function */
if (check_from_module( debug_from_relay_includelist, debug_from_relay_excludelist, user ))
return proc; /* we want to relay it */
return data->entry_points[ordinal].orig_func;
}
/***********************************************************************
* RELAY_SetupDLL
*
* Setup relay debugging for a built-in dll.
*/
void RELAY_SetupDLL( HMODULE module )
{
IMAGE_EXPORT_DIRECTORY *exports;
DWORD *funcs;
unsigned int i, len;
DWORD size, entry_point_rva, old_prot;
struct relay_descr *descr;
struct relay_private_data *data;
WCHAR dllnameW[sizeof(data->dllname)];
const WORD *ordptr;
void *func_base;
SIZE_T func_size;
RtlRunOnceExecuteOnce( &init_once, init_debug_lists, NULL, NULL );
exports = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
if (!exports) return;
if (!(descr = get_relay_descr( module, exports, size ))) return;
if (!(data = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*data) +
(exports->NumberOfFunctions-1) * sizeof(data->entry_points) )))
return;
descr->relay_call = relay_call;
descr->private = data;
data->module = module;
data->base = exports->Base;
len = strlen( (char *)module + exports->Name );
if (len > 4 && !_stricmp( (char *)module + exports->Name + len - 4, ".dll" )) len -= 4;
len = min( len, sizeof(data->dllname) - 1 );
memcpy( data->dllname, (char *)module + exports->Name, len );
data->dllname[len] = 0;
ascii_to_unicode( dllnameW, data->dllname, len + 1 );
/* fetch name pointer for all entry points and store them in the private structure */
ordptr = (const WORD *)((char *)module + exports->AddressOfNameOrdinals);
for (i = 0; i < exports->NumberOfNames; i++, ordptr++)
{
DWORD name_rva = ((DWORD*)((char *)module + exports->AddressOfNames))[i];
data->entry_points[*ordptr].name = (const char *)module + name_rva;
}
/* patch the functions in the export table to point to the relay thunks */
funcs = (DWORD *)((char *)module + exports->AddressOfFunctions);
entry_point_rva = descr->entry_point_base - (const char *)module;
func_base = funcs;
func_size = exports->NumberOfFunctions * sizeof(*funcs);
NtProtectVirtualMemory( NtCurrentProcess(), &func_base, &func_size, PAGE_READWRITE, &old_prot );
for (i = 0; i < exports->NumberOfFunctions; i++, funcs++)
{
if (!descr->entry_point_offsets[i]) continue; /* not a normal function */
if (!check_relay_include( dllnameW, i + exports->Base, data->entry_points[i].name ))
continue; /* don't include this entry point */
data->entry_points[i].orig_func = (char *)module + *funcs;
*funcs = entry_point_rva + descr->entry_point_offsets[i];
}
if (old_prot != PAGE_READWRITE)
NtProtectVirtualMemory( NtCurrentProcess(), &func_base, &func_size, old_prot, &old_prot );
}
#else /* __i386__ || __x86_64__ || __arm__ || __aarch64__ */
FARPROC RELAY_GetProcAddress( HMODULE module, const IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, FARPROC proc, DWORD ordinal, const WCHAR *user )
{
return proc;
}
void RELAY_SetupDLL( HMODULE module )
{
}
#endif /* __i386__ || __x86_64__ || __arm__ || __aarch64__ */
/***********************************************************************/
/* snoop support */
/***********************************************************************/
#ifdef __i386__
WINE_DECLARE_DEBUG_CHANNEL(seh);
WINE_DECLARE_DEBUG_CHANNEL(snoop);
#include "pshpack1.h"
typedef struct
{
/* code part */
BYTE lcall; /* 0xe8 call snoopentry (relative) */
DWORD snoopentry; /* SNOOP_Entry relative */
/* unreached */
int nrofargs;
FARPROC origfun;
const char *name;
} SNOOP_FUN;
typedef struct tagSNOOP_DLL {
HMODULE hmod;
SNOOP_FUN *funs;
DWORD ordbase;
DWORD nrofordinals;
struct tagSNOOP_DLL *next;
char name[1];
} SNOOP_DLL;
typedef struct
{
/* code part */
BYTE lcall; /* 0xe8 call snoopret relative*/
DWORD snoopret; /* SNOOP_Ret relative */
/* unreached */
FARPROC origreturn;
SNOOP_DLL *dll;
DWORD ordinal;
void **origESP;
DWORD *args; /* saved args across a stdcall */
} SNOOP_RETURNENTRY;
typedef struct tagSNOOP_RETURNENTRIES {
SNOOP_RETURNENTRY entry[4092/sizeof(SNOOP_RETURNENTRY)];
struct tagSNOOP_RETURNENTRIES *next;
} SNOOP_RETURNENTRIES;
#include "poppack.h"
extern void WINAPI SNOOP_Entry(void);
extern void WINAPI SNOOP_Return(void);
static SNOOP_DLL *firstdll;
static SNOOP_RETURNENTRIES *firstrets;
/***********************************************************************
* SNOOP_ShowDebugmsgSnoop
*
* Simple function to decide if a particular debugging message is
* wanted.
*/
static BOOL SNOOP_ShowDebugmsgSnoop(const char *module, int ordinal, const char *func)
{
WCHAR moduleW[40];
int len = strlen(module);
if (len >= ARRAY_SIZE( moduleW )) return FALSE;
ascii_to_unicode( moduleW, module, len + 1 );
if (debug_snoop_excludelist && check_list( moduleW, ordinal, func, debug_snoop_excludelist ))
return FALSE;
if (debug_snoop_includelist && !check_list( moduleW, ordinal, func, debug_snoop_includelist ))
return FALSE;
return TRUE;
}
/***********************************************************************
* SNOOP_SetupDLL
*
* Setup snoop debugging for a native dll.
*/
void SNOOP_SetupDLL(HMODULE hmod)
{
SNOOP_DLL **dll = &firstdll;
char *p, *name;
void *addr;
SIZE_T size;
ULONG size32;
IMAGE_EXPORT_DIRECTORY *exports;
RtlRunOnceExecuteOnce( &init_once, init_debug_lists, NULL, NULL );
exports = RtlImageDirectoryEntryToData( hmod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size32 );
if (!exports || !exports->NumberOfFunctions) return;
name = (char *)hmod + exports->Name;
size = size32;
TRACE_(snoop)("hmod=%p, name=%s\n", hmod, name);
while (*dll) {
if ((*dll)->hmod == hmod)
{
/* another dll, loaded at the same address */
addr = (*dll)->funs;
size = (*dll)->nrofordinals * sizeof(SNOOP_FUN);
NtFreeVirtualMemory(NtCurrentProcess(), &addr, &size, MEM_RELEASE);
break;
}
dll = &((*dll)->next);
}
if (*dll)
*dll = RtlReAllocateHeap(GetProcessHeap(),
HEAP_ZERO_MEMORY, *dll,
sizeof(SNOOP_DLL) + strlen(name));
else
*dll = RtlAllocateHeap(GetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(SNOOP_DLL) + strlen(name));
(*dll)->hmod = hmod;
(*dll)->ordbase = exports->Base;
(*dll)->nrofordinals = exports->NumberOfFunctions;
strcpy( (*dll)->name, name );
p = (*dll)->name + strlen((*dll)->name) - 4;
if (p > (*dll)->name && !_stricmp( p, ".dll" )) *p = 0;
size = exports->NumberOfFunctions * sizeof(SNOOP_FUN);
addr = NULL;
NtAllocateVirtualMemory(NtCurrentProcess(), &addr, 0, &size,
MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (!addr) {
RtlFreeHeap(GetProcessHeap(),0,*dll);
FIXME("out of memory\n");
return;
}
(*dll)->funs = addr;
memset((*dll)->funs,0,size);
}
/***********************************************************************
* SNOOP_GetProcAddress
*
* Return the proc address to use for a given function.
*/
FARPROC SNOOP_GetProcAddress( HMODULE hmod, const IMAGE_EXPORT_DIRECTORY *exports,
DWORD exp_size, FARPROC origfun, DWORD ordinal,
const WCHAR *user)
{
unsigned int i;
const char *ename;
const WORD *ordinals;
const DWORD *names;
SNOOP_DLL *dll = firstdll;
SNOOP_FUN *fun;
const IMAGE_SECTION_HEADER *sec;
if (!TRACE_ON(snoop)) return origfun;
if (!check_from_module( debug_from_snoop_includelist, debug_from_snoop_excludelist, user ))
return origfun; /* the calling module was explicitly excluded */
if (!*(LPBYTE)origfun) /* 0x00 is an impossible opcode, possible dataref. */
return origfun;
sec = RtlImageRvaToSection( RtlImageNtHeader(hmod), hmod, (char *)origfun - (char *)hmod );
if (!sec || !(sec->Characteristics & IMAGE_SCN_CNT_CODE))
return origfun; /* most likely a data reference */
while (dll) {
if (hmod == dll->hmod)
break;
dll = dll->next;
}
if (!dll) /* probably internal */
return origfun;
/* try to find a name for it */
ename = NULL;
names = (const DWORD *)((const char *)hmod + exports->AddressOfNames);
ordinals = (const WORD *)((const char *)hmod + exports->AddressOfNameOrdinals);
if (names) for (i = 0; i < exports->NumberOfNames; i++)
{
if (ordinals[i] == ordinal)
{
ename = (const char *)hmod + names[i];
break;
}
}
if (!SNOOP_ShowDebugmsgSnoop(dll->name,ordinal,ename))
return origfun;
assert(ordinal < dll->nrofordinals);
fun = dll->funs + ordinal;
if (!fun->name)
{
fun->name = ename;
fun->lcall = 0xe8;
fun->snoopentry = (char *)SNOOP_Entry - (char *)(&fun->snoopentry + 1);
fun->origfun = origfun;
fun->nrofargs = -1;
}
return (FARPROC)&(fun->lcall);
}
static void SNOOP_PrintArg(DWORD x)
{
int i,nostring;
TRACE_(snoop)("%08x",x);
if (IS_INTARG(x) || TRACE_ON(seh)) return; /* trivial reject to avoid faults */
__TRY
{
LPBYTE s=(LPBYTE)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>=0x80) {nostring=1;break;}
i++;
}
if (!nostring && i > 5)
TRACE_(snoop)(" %s",debugstr_an((LPSTR)x,i));
else /* try unicode */
{
LPWSTR s=(LPWSTR)x;
i=0;nostring=0;
while (i<80) {
if (s[i]==0) break;
if (s[i]<0x20) {nostring=1;break;}
if (s[i]>0x100) {nostring=1;break;}
i++;
}
if (!nostring && i > 5) TRACE_(snoop)(" %s",debugstr_wn((LPWSTR)x,i));
}
}
__EXCEPT_PAGE_FAULT
{
}
__ENDTRY
}
void WINAPI DECLSPEC_HIDDEN __regs_SNOOP_Entry( void **stack )
{
SNOOP_DLL *dll;
SNOOP_FUN *fun = (SNOOP_FUN *)((char *)stack[0] - 5);
SNOOP_RETURNENTRIES **rets = &firstrets;
SNOOP_RETURNENTRY *ret;
int i=0, max;
for (dll = firstdll; dll; dll = dll->next )
if (fun >= dll->funs && fun < dll->funs + dll->nrofordinals) break;
if (!dll) {
FIXME("entrypoint %p not found\n", fun);
return; /* oops */
}
/* guess cdecl ... */
if (fun->nrofargs<0) {
/* Typical cdecl return frame is:
* add esp, xxxxxxxx
* which has (for xxxxxxxx up to 255 the opcode "83 C4 xx".
* (after that 81 C2 xx xx xx xx)
*/
LPBYTE reteip = stack[1];
if (reteip) {
if ((reteip[0]==0x83)&&(reteip[1]==0xc4))
fun->nrofargs=reteip[2]/4;
}
}
while (*rets) {
for (i=0;i<ARRAY_SIZE( (*rets)->entry );i++)
if (!(*rets)->entry[i].origreturn)
break;
if (i!=ARRAY_SIZE( (*rets)->entry ))
break;
rets = &((*rets)->next);
}
if (!*rets) {
SIZE_T size = 4096;
VOID* addr = NULL;
NtAllocateVirtualMemory(NtCurrentProcess(), &addr, 0, &size,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE);
if (!addr) return;
*rets = addr;
i = 0; /* entry 0 is free */
}
ret = &((*rets)->entry[i]);
ret->lcall = 0xe8;
ret->snoopret = (char *)SNOOP_Return - (char *)(&ret->snoopret + 1);
ret->origreturn = stack[1];
stack[1] = &ret->lcall;
ret->dll = dll;
ret->args = NULL;
ret->ordinal = fun - dll->funs;
ret->origESP = stack;
stack[0] = fun->origfun;
if (!TRACE_ON(snoop)) return;
if (fun->name) TRACE_(snoop)("\1CALL %s.%s(", dll->name, fun->name);
else TRACE_(snoop)("\1CALL %s.%d(", dll->name, dll->ordbase+ret->ordinal);
if (fun->nrofargs>0) {
max = fun->nrofargs; if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg( (DWORD)stack[i + 2] );
if (i<fun->nrofargs-1) TRACE_(snoop)(",");
}
if (max!=fun->nrofargs)
TRACE_(snoop)(" ...");
} else if (fun->nrofargs<0) {
TRACE_(snoop)("<unknown, check return>");
ret->args = RtlAllocateHeap(GetProcessHeap(),
0,16*sizeof(DWORD));
memcpy(ret->args, stack + 2, sizeof(DWORD)*16);
}
TRACE_(snoop)(") ret=%08x\n",(DWORD)ret->origreturn);
}
void WINAPI DECLSPEC_HIDDEN __regs_SNOOP_Return( void **stack )
{
SNOOP_RETURNENTRY *ret = (SNOOP_RETURNENTRY*)((char *)stack[0] - 5);
SNOOP_FUN *fun = &ret->dll->funs[ret->ordinal];
DWORD retval = (DWORD)stack[-1]; /* get saved %eax from the stack */
/* We haven't found out the nrofargs yet. If we called a cdecl
* function it is too late anyway and we can just set '0' (which
* will be the difference between orig and current ESP
* If stdcall -> everything ok.
*/
if (ret->dll->funs[ret->ordinal].nrofargs<0)
ret->dll->funs[ret->ordinal].nrofargs = stack - ret->origESP - 1;
stack[0] = ret->origreturn;
if (!TRACE_ON(snoop)) {
ret->origreturn = NULL; /* mark as empty */
return;
}
if (ret->args) {
int i,max;
if (fun->name)
TRACE_(snoop)("\1RET %s.%s(", ret->dll->name, fun->name);
else
TRACE_(snoop)("\1RET %s.%d(", ret->dll->name, ret->dll->ordbase+ret->ordinal);
max = fun->nrofargs;
if (max>16) max=16;
for (i=0;i<max;i++)
{
SNOOP_PrintArg(ret->args[i]);
if (i<max-1) TRACE_(snoop)(",");
}
TRACE_(snoop)(") retval=%08x ret=%08x\n", retval, (DWORD)ret->origreturn );
RtlFreeHeap(GetProcessHeap(),0,ret->args);
ret->args = NULL;
}
else
{
if (fun->name)
TRACE_(snoop)("\1RET %s.%s() retval=%08x ret=%08x\n",
ret->dll->name, fun->name, retval, (DWORD)ret->origreturn);
else
TRACE_(snoop)("\1RET %s.%d() retval=%08x ret=%08x\n",
ret->dll->name,ret->dll->ordbase+ret->ordinal,
retval, (DWORD)ret->origreturn);
}
ret->origreturn = NULL; /* mark as empty */
}
/* small wrappers that save registers and get the stack pointer */
#define SNOOP_WRAPPER(name) \
__ASM_STDCALL_FUNC( name, 0, \
"pushl %eax\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
"pushl %ecx\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
"pushl %edx\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
"leal 12(%esp),%eax\n\t" \
"pushl %eax\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") \
"call " __ASM_STDCALL("__regs_" #name,4) "\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") \
"popl %edx\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") \
"popl %ecx\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") \
"popl %eax\n\t" \
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") \
"ret" )
SNOOP_WRAPPER( SNOOP_Entry )
SNOOP_WRAPPER( SNOOP_Return )
#else /* __i386__ */
FARPROC SNOOP_GetProcAddress( HMODULE hmod, const IMAGE_EXPORT_DIRECTORY *exports, DWORD exp_size,
FARPROC origfun, DWORD ordinal, const WCHAR *user )
{
return origfun;
}
void SNOOP_SetupDLL( HMODULE hmod )
{
FIXME("snooping works only on i386 for now.\n");
}
#endif /* __i386__ */
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