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wine/dlls/wow64/syscall.c

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/*
* WoW64 syscall wrapping
*
* Copyright 2021 Alexandre Julliard
*
* 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 <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnt.h"
#include "winternl.h"
#include "wine/exception.h"
#include "wine/unixlib.h"
#include "wine/asm.h"
#include "wow64_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wow);
USHORT native_machine = 0;
USHORT current_machine = 0;
ULONG_PTR args_alignment = 0;
ULONG_PTR highest_user_address = 0x7ffeffff;
ULONG_PTR default_zero_bits = 0x7fffffff;
typedef NTSTATUS (WINAPI *syscall_thunk)( UINT *args );
static const syscall_thunk syscall_thunks[] =
{
#define SYSCALL_ENTRY(id,name,args) wow64_ ## name,
ALL_SYSCALLS32
#undef SYSCALL_ENTRY
};
static BYTE syscall_args[ARRAY_SIZE(syscall_thunks)] =
{
#define SYSCALL_ENTRY(id,name,args) args,
ALL_SYSCALLS32
#undef SYSCALL_ENTRY
};
static SYSTEM_SERVICE_TABLE syscall_tables[4] =
{
{ (ULONG_PTR *)syscall_thunks, NULL, ARRAY_SIZE(syscall_thunks), syscall_args }
};
/* header for Wow64AllocTemp blocks; probably not the right layout */
struct mem_header
{
struct mem_header *next;
void *__pad;
BYTE data[1];
};
/* stack frame for user callbacks */
struct user_callback_frame
{
struct user_callback_frame *prev_frame;
struct mem_header *temp_list;
void **ret_ptr;
ULONG *ret_len;
NTSTATUS status;
__wine_jmp_buf jmpbuf;
};
/* stack frame for user APCs */
struct user_apc_frame
{
struct user_apc_frame *prev_frame;
CONTEXT *context;
void *wow_context;
};
SYSTEM_DLL_INIT_BLOCK *pLdrSystemDllInitBlock = NULL;
static WOW64INFO *wow64info;
/* cpu backend dll functions */
/* the function prototypes most likely differ from Windows */
static void * (WINAPI *pBTCpuGetBopCode)(void);
static NTSTATUS (WINAPI *pBTCpuGetContext)(HANDLE,HANDLE,void *,void *);
static BOOLEAN (WINAPI *pBTCpuIsProcessorFeaturePresent)(UINT);
static void (WINAPI *pBTCpuProcessInit)(void);
static NTSTATUS (WINAPI *pBTCpuSetContext)(HANDLE,HANDLE,void *,void *);
static void (WINAPI *pBTCpuThreadInit)(void);
static void (WINAPI *pBTCpuSimulate)(void);
static void * (WINAPI *p__wine_get_unix_opcode)(void);
static void * (WINAPI *pKiRaiseUserExceptionDispatcher)(void);
void (WINAPI *pBTCpuNotifyFlushInstructionCache2)( const void *, SIZE_T ) = NULL;
void (WINAPI *pBTCpuNotifyMapViewOfSection)( void * ) = NULL;
void (WINAPI *pBTCpuNotifyMemoryAlloc)( void *, SIZE_T, ULONG, ULONG ) = NULL;
void (WINAPI *pBTCpuNotifyMemoryDirty)( void *, SIZE_T ) = NULL;
void (WINAPI *pBTCpuNotifyMemoryFree)( void *, SIZE_T, ULONG ) = NULL;
void (WINAPI *pBTCpuNotifyMemoryProtect)( void *, SIZE_T, ULONG ) = NULL;
void (WINAPI *pBTCpuNotifyUnmapViewOfSection)( void * ) = NULL;
NTSTATUS (WINAPI *pBTCpuResetToConsistentState)( EXCEPTION_POINTERS * ) = NULL;
void (WINAPI *pBTCpuUpdateProcessorInformation)( SYSTEM_CPU_INFORMATION * ) = NULL;
void (WINAPI *pBTCpuThreadTerm)( HANDLE ) = NULL;
void *dummy = RtlUnwind;
BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, void *reserved )
{
if (reason == DLL_PROCESS_ATTACH) LdrDisableThreadCalloutsForDll( inst );
return TRUE;
}
void __cdecl __wine_spec_unimplemented_stub( const char *module, const char *function )
{
EXCEPTION_RECORD record;
record.ExceptionCode = EXCEPTION_WINE_STUB;
record.ExceptionFlags = EH_NONCONTINUABLE;
record.ExceptionRecord = NULL;
record.ExceptionAddress = __wine_spec_unimplemented_stub;
record.NumberParameters = 2;
record.ExceptionInformation[0] = (ULONG_PTR)module;
record.ExceptionInformation[1] = (ULONG_PTR)function;
for (;;) RtlRaiseException( &record );
}
static EXCEPTION_RECORD *exception_record_32to64( const EXCEPTION_RECORD32 *rec32 )
{
EXCEPTION_RECORD *rec;
unsigned int i;
rec = Wow64AllocateTemp( sizeof(*rec) );
rec->ExceptionCode = rec32->ExceptionCode;
rec->ExceptionFlags = rec32->ExceptionFlags;
rec->ExceptionRecord = rec32->ExceptionRecord ? exception_record_32to64( ULongToPtr(rec32->ExceptionRecord) ) : NULL;
rec->ExceptionAddress = ULongToPtr( rec32->ExceptionAddress );
rec->NumberParameters = rec32->NumberParameters;
for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++)
rec->ExceptionInformation[i] = rec32->ExceptionInformation[i];
return rec;
}
static void exception_record_64to32( EXCEPTION_RECORD32 *rec32, const EXCEPTION_RECORD *rec )
{
unsigned int i;
rec32->ExceptionCode = rec->ExceptionCode;
rec32->ExceptionFlags = rec->ExceptionFlags;
rec32->ExceptionRecord = PtrToUlong( rec->ExceptionRecord );
rec32->ExceptionAddress = PtrToUlong( rec->ExceptionAddress );
rec32->NumberParameters = rec->NumberParameters;
for (i = 0; i < rec->NumberParameters; i++)
rec32->ExceptionInformation[i] = rec->ExceptionInformation[i];
}
static NTSTATUS get_context_return_value( void *wow_context )
{
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
return ((I386_CONTEXT *)wow_context)->Eax;
case IMAGE_FILE_MACHINE_ARMNT:
return ((ARM_CONTEXT *)wow_context)->R0;
}
return 0;
}
/**********************************************************************
* call_user_exception_dispatcher
*/
static void call_user_exception_dispatcher( EXCEPTION_RECORD32 *rec, void *ctx32_ptr, void *ctx64_ptr )
{
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
/* stack layout when calling 32-bit KiUserExceptionDispatcher */
struct exc_stack_layout32
{
ULONG rec_ptr; /* 000 */
ULONG context_ptr; /* 004 */
EXCEPTION_RECORD32 rec; /* 008 */
I386_CONTEXT context; /* 058 */
CONTEXT_EX32 context_ex; /* 324 */
BYTE xstate[sizeof(XSTATE)+64]; /* 33c */
DWORD align; /* 4bc */
} *stack;
I386_CONTEXT ctx = { CONTEXT_I386_ALL };
CONTEXT_EX *context_ex, *src_ex = NULL;
ULONG flags;
C_ASSERT( offsetof(struct exc_stack_layout32, context) == 0x58 );
C_ASSERT( offsetof(struct exc_stack_layout32, xstate) == 0x33c );
C_ASSERT( sizeof(struct exc_stack_layout32) == 0x4c0 );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (ctx32_ptr)
{
I386_CONTEXT *ctx32 = ctx32_ptr;
if ((ctx32->ContextFlags & CONTEXT_I386_XSTATE) == CONTEXT_I386_XSTATE)
src_ex = (CONTEXT_EX *)(ctx32 + 1);
}
else if (native_machine == IMAGE_FILE_MACHINE_AMD64)
{
AMD64_CONTEXT *ctx64 = ctx64_ptr;
if ((ctx64->ContextFlags & CONTEXT_AMD64_FLOATING_POINT) == CONTEXT_AMD64_FLOATING_POINT)
memcpy( ctx.ExtendedRegisters, &ctx64->FltSave, sizeof(ctx.ExtendedRegisters) );
if ((ctx64->ContextFlags & CONTEXT_AMD64_XSTATE) == CONTEXT_AMD64_XSTATE)
src_ex = (CONTEXT_EX *)(ctx64 + 1);
}
flags = ctx.ContextFlags;
if (src_ex) flags |= CONTEXT_I386_XSTATE;
stack = (struct exc_stack_layout32 *)ULongToPtr( ctx.Esp & ~3 ) - 1;
stack->rec_ptr = PtrToUlong( &stack->rec );
stack->context_ptr = PtrToUlong( &stack->context );
stack->rec = *rec;
stack->context = ctx;
RtlInitializeExtendedContext( &stack->context, flags, &context_ex );
/* adjust Eip for breakpoints in software emulation (hardware exceptions already adjust Rip) */
if (rec->ExceptionCode == EXCEPTION_BREAKPOINT && (wow64info->CpuFlags & WOW64_CPUFLAGS_SOFTWARE))
stack->context.Eip--;
if (src_ex)
{
XSTATE *src_xs = (XSTATE *)((char *)src_ex + src_ex->XState.Offset);
XSTATE *dst_xs = (XSTATE *)((char *)context_ex + context_ex->XState.Offset);
dst_xs->Mask = src_xs->Mask & ~(ULONG64)3;
dst_xs->CompactionMask = src_xs->CompactionMask;
if ((dst_xs->Mask & 4) &&
src_ex->XState.Length >= sizeof(XSTATE) &&
context_ex->XState.Length >= sizeof(XSTATE))
memcpy( &dst_xs->YmmContext, &src_xs->YmmContext, sizeof(dst_xs->YmmContext) );
}
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserExceptionDispatcher;
ctx.EFlags &= ~(0x100|0x400|0x40000);
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
TRACE( "exception %08lx dispatcher %08lx stack %08lx eip %08lx\n",
rec->ExceptionCode, ctx.Eip, ctx.Esp, stack->context.Eip );
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
struct stack_layout
{
ARM_CONTEXT context;
EXCEPTION_RECORD32 rec;
} *stack;
ARM_CONTEXT ctx = { CONTEXT_ARM_ALL };
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct stack_layout *)(ULONG_PTR)(ctx.Sp & ~3) - 1;
stack->rec = *rec;
stack->context = ctx;
ctx.R0 = PtrToUlong( &stack->rec ); /* first arg for KiUserExceptionDispatcher */
ctx.R1 = PtrToUlong( &stack->context ); /* second arg for KiUserExceptionDispatcher */
ctx.Sp = PtrToUlong( stack );
ctx.Pc = pLdrSystemDllInitBlock->pKiUserExceptionDispatcher;
if (ctx.Pc & 1) ctx.Cpsr |= 0x20;
else ctx.Cpsr &= ~0x20;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
TRACE( "exception %08lx dispatcher %08lx stack %08lx pc %08lx\n",
rec->ExceptionCode, ctx.Pc, ctx.Sp, stack->context.Sp );
}
break;
}
}
/**********************************************************************
* call_raise_user_exception_dispatcher
*/
static void call_raise_user_exception_dispatcher( ULONG code )
{
TEB32 *teb32 = (TEB32 *)((char *)NtCurrentTeb() + NtCurrentTeb()->WowTebOffset);
teb32->ExceptionCode = code;
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
I386_CONTEXT ctx = { CONTEXT_I386_ALL };
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
ctx.Esp -= sizeof(ULONG);
*(ULONG *)ULongToPtr( ctx.Esp ) = ctx.Eip;
ctx.Eip = (ULONG_PTR)pKiRaiseUserExceptionDispatcher;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
ARM_CONTEXT ctx = { CONTEXT_ARM_ALL };
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
ctx.Pc = (ULONG_PTR)pKiRaiseUserExceptionDispatcher;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
}
break;
}
}
/* based on RtlRaiseException: call NtRaiseException with context setup to return to caller */
void WINAPI raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance );
#ifdef __x86_64__
__ASM_GLOBAL_FUNC( raise_exception,
"sub $0x28,%rsp\n\t"
__ASM_SEH(".seh_stackalloc 0x28\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_adjust_cfa_offset 0x28\n\t")
"movq %rcx,(%rsp)\n\t"
"movq %rdx,%rcx\n\t"
"call " __ASM_NAME("RtlCaptureContext") "\n\t"
"leaq 0x30(%rsp),%rax\n\t" /* orig stack pointer */
"movq %rax,0x98(%rdx)\n\t" /* context->Rsp */
"movq (%rsp),%rcx\n\t" /* original first parameter */
"movq 0x28(%rsp),%rax\n\t" /* return address */
"movq %rax,0xf8(%rdx)\n\t" /* context->Rip */
"call " __ASM_NAME("NtRaiseException") )
#elif defined(__aarch64__)
__ASM_GLOBAL_FUNC( raise_exception,
"stp x29, x30, [sp, #-32]!\n\t"
__ASM_SEH(".seh_save_fplr_x 32\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_def_cfa x29, 32\n\t")
__ASM_CFI(".cfi_offset x30, -24\n\t")
__ASM_CFI(".cfi_offset x29, -32\n\t")
"mov x29, sp\n\t"
"stp x0, x1, [sp, #16]\n\t"
"mov x0, x1\n\t"
"bl " __ASM_NAME("RtlCaptureContext") "\n\t"
"ldp x0, x1, [sp, #16]\n\t" /* orig parameters */
"ldp x4, x5, [sp]\n\t" /* frame pointer, return address */
"stp x4, x5, [x1, #0xf0]\n\t" /* context->Fp, Lr */
"add x4, sp, #32\n\t" /* orig stack pointer */
"stp x4, x5, [x1, #0x100]\n\t" /* context->Sp, Pc */
"bl " __ASM_NAME("NtRaiseException") )
#endif
/**********************************************************************
* wow64_NtAddAtom
*/
NTSTATUS WINAPI wow64_NtAddAtom( UINT *args )
{
const WCHAR *name = get_ptr( &args );
ULONG len = get_ulong( &args );
RTL_ATOM *atom = get_ptr( &args );
return NtAddAtom( name, len, atom );
}
/**********************************************************************
* wow64_NtAllocateLocallyUniqueId
*/
NTSTATUS WINAPI wow64_NtAllocateLocallyUniqueId( UINT *args )
{
LUID *luid = get_ptr( &args );
return NtAllocateLocallyUniqueId( luid );
}
/**********************************************************************
* wow64_NtAllocateUuids
*/
NTSTATUS WINAPI wow64_NtAllocateUuids( UINT *args )
{
ULARGE_INTEGER *time = get_ptr( &args );
ULONG *delta = get_ptr( &args );
ULONG *sequence = get_ptr( &args );
UCHAR *seed = get_ptr( &args );
return NtAllocateUuids( time, delta, sequence, seed );
}
/***********************************************************************
* wow64_NtCallbackReturn
*/
NTSTATUS WINAPI wow64_NtCallbackReturn( UINT *args )
{
void *ret_ptr = get_ptr( &args );
ULONG ret_len = get_ulong( &args );
NTSTATUS status = get_ulong( &args );
struct user_callback_frame *frame = NtCurrentTeb()->TlsSlots[WOW64_TLS_USERCALLBACKDATA];
if (!frame) return STATUS_NO_CALLBACK_ACTIVE;
*frame->ret_ptr = ret_ptr;
*frame->ret_len = ret_len;
frame->status = status;
__wine_longjmp( &frame->jmpbuf, 1 );
}
/**********************************************************************
* wow64_NtClose
*/
NTSTATUS WINAPI wow64_NtClose( UINT *args )
{
HANDLE handle = get_handle( &args );
return NtClose( handle );
}
/**********************************************************************
* wow64_NtContinue
*/
NTSTATUS WINAPI wow64_NtContinue( UINT *args )
{
void *context = get_ptr( &args );
BOOLEAN alertable = get_ulong( &args );
NTSTATUS status = get_context_return_value( context );
struct user_apc_frame *frame = NtCurrentTeb()->TlsSlots[WOW64_TLS_APCLIST];
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, context );
while (frame && frame->wow_context != context) frame = frame->prev_frame;
NtCurrentTeb()->TlsSlots[WOW64_TLS_APCLIST] = frame ? frame->prev_frame : NULL;
if (frame) NtContinue( frame->context, alertable );
if (alertable) NtTestAlert();
return status;
}
/**********************************************************************
* wow64_NtDeleteAtom
*/
NTSTATUS WINAPI wow64_NtDeleteAtom( UINT *args )
{
RTL_ATOM atom = get_ulong( &args );
return NtDeleteAtom( atom );
}
/**********************************************************************
* wow64_NtFindAtom
*/
NTSTATUS WINAPI wow64_NtFindAtom( UINT *args )
{
const WCHAR *name = get_ptr( &args );
ULONG len = get_ulong( &args );
RTL_ATOM *atom = get_ptr( &args );
return NtFindAtom( name, len, atom );
}
/**********************************************************************
* wow64_NtGetContextThread
*/
NTSTATUS WINAPI wow64_NtGetContextThread( UINT *args )
{
HANDLE handle = get_handle( &args );
WOW64_CONTEXT *context = get_ptr( &args );
return RtlWow64GetThreadContext( handle, context );
}
/**********************************************************************
* wow64_NtGetCurrentProcessorNumber
*/
NTSTATUS WINAPI wow64_NtGetCurrentProcessorNumber( UINT *args )
{
return NtGetCurrentProcessorNumber();
}
/**********************************************************************
* wow64_NtQueryDefaultLocale
*/
NTSTATUS WINAPI wow64_NtQueryDefaultLocale( UINT *args )
{
BOOLEAN user = get_ulong( &args );
LCID *lcid = get_ptr( &args );
return NtQueryDefaultLocale( user, lcid );
}
/**********************************************************************
* wow64_NtQueryDefaultUILanguage
*/
NTSTATUS WINAPI wow64_NtQueryDefaultUILanguage( UINT *args )
{
LANGID *lang = get_ptr( &args );
return NtQueryDefaultUILanguage( lang );
}
/**********************************************************************
* wow64_NtQueryInformationAtom
*/
NTSTATUS WINAPI wow64_NtQueryInformationAtom( UINT *args )
{
RTL_ATOM atom = get_ulong( &args );
ATOM_INFORMATION_CLASS class = get_ulong( &args );
void *info = get_ptr( &args );
ULONG len = get_ulong( &args );
ULONG *retlen = get_ptr( &args );
if (class != AtomBasicInformation) FIXME( "class %u not supported\n", class );
return NtQueryInformationAtom( atom, class, info, len, retlen );
}
/**********************************************************************
* wow64_NtQueryInstallUILanguage
*/
NTSTATUS WINAPI wow64_NtQueryInstallUILanguage( UINT *args )
{
LANGID *lang = get_ptr( &args );
return NtQueryInstallUILanguage( lang );
}
/**********************************************************************
* wow64_NtRaiseException
*/
NTSTATUS WINAPI wow64_NtRaiseException( UINT *args )
{
EXCEPTION_RECORD32 *rec32 = get_ptr( &args );
void *context32 = get_ptr( &args );
BOOL first_chance = get_ulong( &args );
EXCEPTION_RECORD *rec = exception_record_32to64( rec32 );
CONTEXT context;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, context32 );
__TRY
{
raise_exception( rec, &context, first_chance );
}
__EXCEPT_ALL
{
call_user_exception_dispatcher( rec32, context32, &context );
}
__ENDTRY
return STATUS_SUCCESS;
}
/**********************************************************************
* wow64_NtSetContextThread
*/
NTSTATUS WINAPI wow64_NtSetContextThread( UINT *args )
{
HANDLE handle = get_handle( &args );
WOW64_CONTEXT *context = get_ptr( &args );
return RtlWow64SetThreadContext( handle, context );
}
/**********************************************************************
* wow64_NtSetDebugFilterState
*/
NTSTATUS WINAPI wow64_NtSetDebugFilterState( UINT *args )
{
ULONG component_id = get_ulong( &args );
ULONG level = get_ulong( &args );
BOOLEAN state = get_ulong( &args );
return NtSetDebugFilterState( component_id, level, state );
}
/**********************************************************************
* wow64_NtSetDefaultLocale
*/
NTSTATUS WINAPI wow64_NtSetDefaultLocale( UINT *args )
{
BOOLEAN user = get_ulong( &args );
LCID lcid = get_ulong( &args );
return NtSetDefaultLocale( user, lcid );
}
/**********************************************************************
* wow64_NtSetDefaultUILanguage
*/
NTSTATUS WINAPI wow64_NtSetDefaultUILanguage( UINT *args )
{
LANGID lang = get_ulong( &args );
return NtSetDefaultUILanguage( lang );
}
/**********************************************************************
* wow64_NtWow64IsProcessorFeaturePresent
*/
NTSTATUS WINAPI wow64_NtWow64IsProcessorFeaturePresent( UINT *args )
{
UINT feature = get_ulong( &args );
return pBTCpuIsProcessorFeaturePresent && pBTCpuIsProcessorFeaturePresent( feature );
}
/**********************************************************************
* init_image_mapping
*/
void init_image_mapping( HMODULE module )
{
ULONG *ptr = RtlFindExportedRoutineByName( module, "Wow64Transition" );
if (ptr) *ptr = PtrToUlong( pBTCpuGetBopCode() );
}
/**********************************************************************
* load_64bit_module
*/
static HMODULE load_64bit_module( const WCHAR *name )
{
NTSTATUS status;
HMODULE module;
UNICODE_STRING str;
WCHAR path[MAX_PATH];
const WCHAR *dir = get_machine_wow64_dir( IMAGE_FILE_MACHINE_TARGET_HOST );
swprintf( path, MAX_PATH, L"%s\\%s", dir, name );
RtlInitUnicodeString( &str, path );
if ((status = LdrLoadDll( dir, 0, &str, &module )))
{
ERR( "failed to load dll %lx\n", status );
NtTerminateProcess( GetCurrentProcess(), status );
}
return module;
}
/**********************************************************************
* get_cpu_dll_name
*/
static const WCHAR *get_cpu_dll_name(void)
{
static ULONG buffer[32];
KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
const WCHAR *ret;
HANDLE key;
ULONG size;
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
RtlInitUnicodeString( &nameW, L"\\Registry\\Machine\\Software\\Microsoft\\Wow64\\x86" );
ret = (native_machine == IMAGE_FILE_MACHINE_ARM64 ? L"xtajit.dll" : L"wow64cpu.dll");
break;
case IMAGE_FILE_MACHINE_ARMNT:
RtlInitUnicodeString( &nameW, L"\\Registry\\Machine\\Software\\Microsoft\\Wow64\\arm" );
ret = L"wowarmhw.dll";
break;
default:
ERR( "unsupported machine %04x\n", current_machine );
RtlExitUserProcess( 1 );
}
InitializeObjectAttributes( &attr, &nameW, OBJ_CASE_INSENSITIVE, 0, NULL );
if (NtOpenKey( &key, KEY_READ | KEY_WOW64_64KEY, &attr )) return ret;
RtlInitUnicodeString( &nameW, L"" );
size = sizeof(buffer) - sizeof(WCHAR);
if (!NtQueryValueKey( key, &nameW, KeyValuePartialInformation, buffer, size, &size ) && info->Type == REG_SZ)
{
((WCHAR *)info->Data)[info->DataLength / sizeof(WCHAR)] = 0;
ret = (WCHAR *)info->Data;
}
NtClose( key );
return ret;
}
/**********************************************************************
* create_cross_process_work_list
*/
static NTSTATUS create_cross_process_work_list( WOW64INFO *wow64info )
{
SIZE_T map_size = 0x4000;
LARGE_INTEGER size;
NTSTATUS status;
HANDLE section;
CROSS_PROCESS_WORK_LIST *list = NULL;
CROSS_PROCESS_WORK_ENTRY *end;
UINT i;
size.QuadPart = map_size;
status = NtCreateSection( &section, SECTION_ALL_ACCESS, NULL, &size, PAGE_READWRITE, SEC_COMMIT, 0 );
if (status) return status;
status = NtMapViewOfSection( section, GetCurrentProcess(), (void **)&list, default_zero_bits, 0, NULL,
&map_size, ViewShare, MEM_TOP_DOWN, PAGE_READWRITE );
if (status)
{
NtClose( section );
return status;
}
end = (CROSS_PROCESS_WORK_ENTRY *)((char *)list + map_size);
for (i = 0; list->entries + i + 1 <= end; i++)
RtlWow64PushCrossProcessWorkOntoFreeList( &list->free_list, &list->entries[i] );
wow64info->SectionHandle = (ULONG_PTR)section;
wow64info->CrossProcessWorkList = (ULONG_PTR)list;
return STATUS_SUCCESS;
}
/**********************************************************************
* process_init
*/
static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **context )
{
PEB32 *peb32;
HMODULE module;
UNICODE_STRING str = RTL_CONSTANT_STRING( L"ntdll.dll" );
SYSTEM_BASIC_INFORMATION info;
ULONG *p__wine_syscall_dispatcher, *p__wine_unix_call_dispatcher;
const SYSTEM_SERVICE_TABLE *psdwhwin32;
RtlWow64GetProcessMachines( GetCurrentProcess(), &current_machine, &native_machine );
if (!current_machine) current_machine = native_machine;
args_alignment = (current_machine == IMAGE_FILE_MACHINE_I386) ? sizeof(ULONG) : sizeof(ULONG64);
NtQuerySystemInformation( SystemEmulationBasicInformation, &info, sizeof(info), NULL );
highest_user_address = (ULONG_PTR)info.HighestUserAddress;
default_zero_bits = (ULONG_PTR)info.HighestUserAddress | 0x7fffffff;
NtQueryInformationProcess( GetCurrentProcess(), ProcessWow64Information, &peb32, sizeof(peb32), NULL );
wow64info = (WOW64INFO *)(peb32 + 1);
wow64info->NativeSystemPageSize = 0x1000;
wow64info->NativeMachineType = native_machine;
wow64info->EmulatedMachineType = current_machine;
NtCurrentTeb()->TlsSlots[WOW64_TLS_WOW64INFO] = wow64info;
#define GET_PTR(name) p ## name = RtlFindExportedRoutineByName( module, #name )
LdrGetDllHandle( NULL, 0, &str, &module );
GET_PTR( LdrSystemDllInitBlock );
module = load_64bit_module( get_cpu_dll_name() );
GET_PTR( BTCpuGetBopCode );
GET_PTR( BTCpuGetContext );
GET_PTR( BTCpuIsProcessorFeaturePresent );
GET_PTR( BTCpuProcessInit );
GET_PTR( BTCpuThreadInit );
GET_PTR( BTCpuResetToConsistentState );
GET_PTR( BTCpuSetContext );
GET_PTR( BTCpuSimulate );
GET_PTR( BTCpuNotifyFlushInstructionCache2 );
GET_PTR( BTCpuNotifyMapViewOfSection );
GET_PTR( BTCpuNotifyMemoryAlloc );
GET_PTR( BTCpuNotifyMemoryDirty );
GET_PTR( BTCpuNotifyMemoryFree );
GET_PTR( BTCpuNotifyMemoryProtect );
GET_PTR( BTCpuNotifyUnmapViewOfSection );
GET_PTR( BTCpuUpdateProcessorInformation );
GET_PTR( BTCpuThreadTerm );
GET_PTR( __wine_get_unix_opcode );
module = load_64bit_module( L"wow64win.dll" );
GET_PTR( sdwhwin32 );
syscall_tables[1] = *psdwhwin32;
pBTCpuProcessInit();
module = (HMODULE)(ULONG_PTR)pLdrSystemDllInitBlock->ntdll_handle;
init_image_mapping( module );
GET_PTR( KiRaiseUserExceptionDispatcher );
GET_PTR( __wine_syscall_dispatcher );
GET_PTR( __wine_unix_call_dispatcher );
*p__wine_syscall_dispatcher = PtrToUlong( pBTCpuGetBopCode() );
*p__wine_unix_call_dispatcher = PtrToUlong( p__wine_get_unix_opcode() );
if (wow64info->CpuFlags & WOW64_CPUFLAGS_SOFTWARE) create_cross_process_work_list( wow64info );
init_file_redirects();
return TRUE;
#undef GET_PTR
}
/**********************************************************************
* thread_init
*/
static void thread_init(void)
{
TEB32 *teb32 = (TEB32 *)((char *)NtCurrentTeb() + NtCurrentTeb()->WowTebOffset);
void *cpu_area_ctx;
teb32->WOW32Reserved = PtrToUlong( pBTCpuGetBopCode() );
RtlWow64GetCurrentCpuArea( NULL, &cpu_area_ctx, NULL );
NtCurrentTeb()->TlsSlots[WOW64_TLS_WOW64INFO] = wow64info;
if (pBTCpuThreadInit) pBTCpuThreadInit();
/* update initial context to jump to 32-bit LdrInitializeThunk (cf. 32-bit call_init_thunk) */
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
I386_CONTEXT *ctx_ptr, *ctx = cpu_area_ctx;
ULONG *stack;
ctx_ptr = (I386_CONTEXT *)ULongToPtr( ctx->Esp ) - 1;
*ctx_ptr = *ctx;
stack = (ULONG *)ctx_ptr;
*(--stack) = 0;
*(--stack) = 0;
*(--stack) = 0;
*(--stack) = PtrToUlong( ctx_ptr );
*(--stack) = 0xdeadbabe;
ctx->Esp = PtrToUlong( stack );
ctx->Eip = pLdrSystemDllInitBlock->pLdrInitializeThunk;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, ctx );
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
ARM_CONTEXT *ctx_ptr, *ctx = cpu_area_ctx;
ctx_ptr = (ARM_CONTEXT *)ULongToPtr( ctx->Sp & ~15 ) - 1;
*ctx_ptr = *ctx;
ctx->R0 = PtrToUlong( ctx_ptr );
ctx->Sp = PtrToUlong( ctx_ptr );
ctx->Pc = pLdrSystemDllInitBlock->pLdrInitializeThunk;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, ctx );
}
break;
default:
ERR( "not supported machine %x\n", current_machine );
NtTerminateProcess( GetCurrentProcess(), STATUS_INVALID_IMAGE_FORMAT );
}
}
/**********************************************************************
* free_temp_data
*/
static void free_temp_data(void)
{
struct mem_header *next, *mem;
for (mem = NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST]; mem; mem = next)
{
next = mem->next;
RtlFreeHeap( GetProcessHeap(), 0, mem );
}
NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST] = NULL;
}
/**********************************************************************
* syscall_filter
*/
static LONG CALLBACK syscall_filter( EXCEPTION_POINTERS *ptrs )
{
switch (ptrs->ExceptionRecord->ExceptionCode)
{
case STATUS_INVALID_HANDLE:
call_raise_user_exception_dispatcher( ptrs->ExceptionRecord->ExceptionCode );
break;
}
return EXCEPTION_EXECUTE_HANDLER;
}
/**********************************************************************
* Wow64SystemServiceEx (wow64.@)
*/
NTSTATUS WINAPI Wow64SystemServiceEx( UINT num, UINT *args )
{
NTSTATUS status;
UINT id = num & 0xfff;
const SYSTEM_SERVICE_TABLE *table = &syscall_tables[(num >> 12) & 3];
if (id >= table->ServiceLimit || !table->ServiceTable[id])
{
ERR( "unsupported syscall %04x\n", num );
return STATUS_INVALID_SYSTEM_SERVICE;
}
__TRY
{
syscall_thunk thunk = (syscall_thunk)table->ServiceTable[id];
status = thunk( args );
}
__EXCEPT( syscall_filter )
{
status = GetExceptionCode();
}
__ENDTRY
free_temp_data();
return status;
}
/**********************************************************************
* simulate_filter
*/
static LONG CALLBACK simulate_filter( EXCEPTION_POINTERS *ptrs )
{
Wow64PassExceptionToGuest( ptrs );
return EXCEPTION_EXECUTE_HANDLER;
}
/**********************************************************************
* cpu_simulate
*/
static void cpu_simulate(void)
{
for (;;)
{
__TRY
{
pBTCpuSimulate();
}
__EXCEPT( simulate_filter )
{
/* restart simulation loop */
}
__ENDTRY
}
}
/**********************************************************************
* Wow64AllocateTemp (wow64.@)
*
* FIXME: probably not 100% compatible.
*/
void * WINAPI Wow64AllocateTemp( SIZE_T size )
{
struct mem_header *mem;
if (!(mem = RtlAllocateHeap( GetProcessHeap(), 0, offsetof( struct mem_header, data[size] ))))
return NULL;
mem->next = NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST];
NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST] = mem;
return mem->data;
}
/**********************************************************************
* Wow64ApcRoutine (wow64.@)
*/
void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CONTEXT *context )
{
struct user_apc_frame frame;
frame.prev_frame = NtCurrentTeb()->TlsSlots[WOW64_TLS_APCLIST];
frame.context = context;
NtCurrentTeb()->TlsSlots[WOW64_TLS_APCLIST] = &frame;
/* cf. 32-bit call_user_apc_dispatcher */
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
/* stack layout when calling 32-bit KiUserApcDispatcher */
struct apc_stack_layout32
{
ULONG func; /* 000 */
UINT arg1; /* 004 */
UINT arg2; /* 008 */
UINT arg3; /* 00c */
UINT alertable; /* 010 */
I386_CONTEXT context; /* 014 */
CONTEXT_EX32 xctx; /* 2e0 */
UINT unk2[4]; /* 2f8 */
} *stack;
I386_CONTEXT ctx = { CONTEXT_I386_FULL };
C_ASSERT( offsetof(struct apc_stack_layout32, context) == 0x14 );
C_ASSERT( sizeof(struct apc_stack_layout32) == 0x308 );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct apc_stack_layout32 *)ULongToPtr( ctx.Esp & ~3 ) - 1;
stack->func = arg1 >> 32;
stack->arg1 = arg1;
stack->arg2 = arg2;
stack->arg3 = arg3;
stack->alertable = TRUE;
stack->context = ctx;
stack->xctx.Legacy.Offset = -(LONG)sizeof(stack->context);
stack->xctx.Legacy.Length = sizeof(stack->context);
stack->xctx.All.Offset = -(LONG)sizeof(stack->context);
stack->xctx.All.Length = sizeof(stack->context) + sizeof(stack->xctx);
stack->xctx.XState.Offset = 25;
stack->xctx.XState.Length = 0;
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserApcDispatcher;
frame.wow_context = &stack->context;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
cpu_simulate();
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
struct apc_stack_layout
{
ULONG func;
ULONG align[3];
ARM_CONTEXT context;
} *stack;
ARM_CONTEXT ctx = { CONTEXT_ARM_FULL };
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct apc_stack_layout *)ULongToPtr( ctx.Sp & ~15 ) - 1;
stack->func = arg1 >> 32;
stack->context = ctx;
ctx.Sp = PtrToUlong( stack );
ctx.Pc = pLdrSystemDllInitBlock->pKiUserApcDispatcher;
ctx.R0 = PtrToUlong( &stack->context );
ctx.R1 = arg1;
ctx.R2 = arg2;
ctx.R3 = arg3;
frame.wow_context = &stack->context;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
cpu_simulate();
}
break;
}
}
/**********************************************************************
* Wow64KiUserCallbackDispatcher (wow64.@)
*/
NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
void **ret_ptr, ULONG *ret_len )
{
WOW64_CPURESERVED *cpu = NtCurrentTeb()->TlsSlots[WOW64_TLS_CPURESERVED];
TEB32 *teb32 = (TEB32 *)((char *)NtCurrentTeb() + NtCurrentTeb()->WowTebOffset);
ULONG teb_frame = teb32->Tib.ExceptionList;
struct user_callback_frame frame;
USHORT flags = cpu->Flags;
frame.prev_frame = NtCurrentTeb()->TlsSlots[WOW64_TLS_USERCALLBACKDATA];
frame.temp_list = NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST];
frame.ret_ptr = ret_ptr;
frame.ret_len = ret_len;
NtCurrentTeb()->TlsSlots[WOW64_TLS_USERCALLBACKDATA] = &frame;
NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST] = NULL;
/* cf. 32-bit KeUserModeCallback */
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
/* stack layout when calling 32-bit KiUserCallbackDispatcher */
struct callback_stack_layout32
{
ULONG eip; /* 000 */
ULONG id; /* 004 */
ULONG args; /* 008 */
ULONG len; /* 00c */
ULONG unk[2]; /* 010 */
ULONG esp; /* 018 */
BYTE args_data[0]; /* 01c */
} *stack;
I386_CONTEXT orig_ctx, ctx = { CONTEXT_I386_FULL };
C_ASSERT( sizeof(struct callback_stack_layout32) == 0x1c );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
orig_ctx = ctx;
stack = ULongToPtr( (ctx.Esp - offsetof(struct callback_stack_layout32,args_data[len])) & ~15 );
stack->eip = ctx.Eip;
stack->id = id;
stack->args = PtrToUlong( stack->args_data );
stack->len = len;
stack->esp = ctx.Esp;
memcpy( stack->args_data, args, len );
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserCallbackDispatcher;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate();
else
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
ARM_CONTEXT orig_ctx, ctx = { CONTEXT_ARM_FULL };
void *args_data;
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
orig_ctx = ctx;
args_data = ULongToPtr( (ctx.Sp - len) & ~15 );
memcpy( args_data, args, len );
ctx.R0 = id;
ctx.R1 = PtrToUlong( args_data );
ctx.R2 = len;
ctx.Sp = PtrToUlong( args_data );
ctx.Pc = pLdrSystemDllInitBlock->pKiUserCallbackDispatcher;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate();
else
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
break;
}
teb32->Tib.ExceptionList = teb_frame;
NtCurrentTeb()->TlsSlots[WOW64_TLS_USERCALLBACKDATA] = frame.prev_frame;
NtCurrentTeb()->TlsSlots[WOW64_TLS_TEMPLIST] = frame.temp_list;
cpu->Flags = flags;
return frame.status;
}
/**********************************************************************
* Wow64LdrpInitialize (wow64.@)
*/
void WINAPI Wow64LdrpInitialize( CONTEXT *context )
{
static RTL_RUN_ONCE init_done;
RtlRunOnceExecuteOnce( &init_done, process_init, NULL, NULL );
thread_init();
cpu_simulate();
}
/**********************************************************************
* Wow64PrepareForException (wow64.@)
*/
#ifdef __x86_64__
__ASM_GLOBAL_FUNC( Wow64PrepareForException,
"sub $0x38,%rsp\n\t"
"mov %rcx,%r10\n\t" /* rec */
"movw %cs,%ax\n\t"
"cmpw %ax,0x38(%rdx)\n\t" /* context->SegCs */
"je 1f\n\t" /* already in 64-bit mode? */
/* copy arguments to 64-bit stack */
"mov %rsp,%rsi\n\t"
"mov 0x98(%rdx),%rcx\n\t" /* context->Rsp */
"sub %rsi,%rcx\n\t" /* stack size */
"sub %rcx,%r14\n\t" /* reserve same size on 64-bit stack */
"and $~0x0f,%r14\n\t"
"mov %r14,%rdi\n\t"
"shr $3,%rcx\n\t"
"rep; movsq\n\t"
/* update arguments to point to the new stack */
"mov %r14,%rax\n\t"
"sub %rsp,%rax\n\t"
"add %rax,%r10\n\t" /* rec */
"add %rax,%rdx\n\t" /* context */
/* switch to 64-bit stack */
"mov %r14,%rsp\n"
/* build EXCEPTION_POINTERS structure and call BTCpuResetToConsistentState */
"1:\tlea 0x20(%rsp),%rcx\n\t" /* pointers */
"mov %r10,(%rcx)\n\t" /* rec */
"mov %rdx,8(%rcx)\n\t" /* context */
"mov " __ASM_NAME("pBTCpuResetToConsistentState") "(%rip),%rax\n\t"
"call *%rax\n\t"
"add $0x38,%rsp\n\t"
"ret" )
#else
void WINAPI Wow64PrepareForException( EXCEPTION_RECORD *rec, CONTEXT *context )
{
EXCEPTION_POINTERS ptrs = { rec, context };
pBTCpuResetToConsistentState( &ptrs );
}
#endif
/**********************************************************************
* Wow64PassExceptionToGuest (wow64.@)
*/
void WINAPI Wow64PassExceptionToGuest( EXCEPTION_POINTERS *ptrs )
{
EXCEPTION_RECORD32 rec32;
exception_record_64to32( &rec32, ptrs->ExceptionRecord );
call_user_exception_dispatcher( &rec32, NULL, ptrs->ContextRecord );
}
/**********************************************************************
* Wow64ProcessPendingCrossProcessItems (wow64.@)
*/
void WINAPI Wow64ProcessPendingCrossProcessItems(void)
{
CROSS_PROCESS_WORK_LIST *list = (void *)wow64info->CrossProcessWorkList;
CROSS_PROCESS_WORK_ENTRY *entry;
BOOLEAN flush = FALSE;
UINT next;
if (!list) return;
entry = RtlWow64PopAllCrossProcessWorkFromWorkList( &list->work_list, &flush );
if (flush)
{
if (pBTCpuNotifyFlushInstructionCache2) pBTCpuNotifyFlushInstructionCache2( NULL, ~0ull );
while (entry)
{
next = entry->next;
RtlWow64PushCrossProcessWorkOntoFreeList( &list->free_list, entry );
entry = CROSS_PROCESS_LIST_ENTRY( &list->work_list, next );
}
return;
}
while (entry)
{
switch (entry->id)
{
case CrossProcessPreVirtualAlloc:
/* FIXME */
break;
case CrossProcessPostVirtualAlloc:
if (!pBTCpuNotifyMemoryAlloc) break;
if (entry->args[2]) break;
pBTCpuNotifyMemoryAlloc( (void *)entry->addr, entry->size, entry->args[0], entry->args[1] );
break;
case CrossProcessPreVirtualFree:
if (!pBTCpuNotifyMemoryFree) break;
pBTCpuNotifyMemoryFree( (void *)entry->addr, entry->size, entry->args[0] );
break;
case CrossProcessPostVirtualFree:
/* FIXME */
break;
case CrossProcessPreVirtualProtect:
if (!pBTCpuNotifyMemoryProtect) break;
pBTCpuNotifyMemoryProtect( (void *)entry->addr, entry->size, entry->args[0] );
break;
case CrossProcessPostVirtualProtect:
/* FIXME */
break;
case CrossProcessFlushCache:
if (!pBTCpuNotifyFlushInstructionCache2) break;
pBTCpuNotifyFlushInstructionCache2( (void *)entry->addr, entry->size );
break;
}
next = entry->next;
RtlWow64PushCrossProcessWorkOntoFreeList( &list->free_list, entry );
entry = CROSS_PROCESS_LIST_ENTRY( &list->work_list, next );
}
}
/**********************************************************************
* Wow64RaiseException (wow64.@)
*/
NTSTATUS WINAPI Wow64RaiseException( int code, EXCEPTION_RECORD *rec )
{
EXCEPTION_RECORD32 rec32;
CONTEXT context;
BOOL first_chance = TRUE;
union
{
I386_CONTEXT i386;
ARM_CONTEXT arm;
} ctx32 = { 0 };
switch (current_machine)
{
case IMAGE_FILE_MACHINE_I386:
{
EXCEPTION_RECORD int_rec = { 0 };
ctx32.i386.ContextFlags = CONTEXT_I386_ALL;
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx32.i386 );
if (code == -1) break;
int_rec.ExceptionAddress = (void *)(ULONG_PTR)ctx32.i386.Eip;
switch (code)
{
case 0x00: /* division by zero */
int_rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case 0x01: /* single-step */
int_rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case 0x03: /* breakpoint */
int_rec.ExceptionCode = EXCEPTION_BREAKPOINT;
int_rec.ExceptionAddress = (void *)(ULONG_PTR)(ctx32.i386.Eip + 1);
int_rec.NumberParameters = 1;
break;
case 0x04: /* overflow */
int_rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case 0x05: /* array bounds */
int_rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case 0x06: /* invalid opcode */
int_rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case 0x09: /* coprocessor segment overrun */
int_rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
case 0x0c: /* stack fault */
int_rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
case 0x29: /* __fastfail */
int_rec.ExceptionCode = STATUS_STACK_BUFFER_OVERRUN;
int_rec.ExceptionFlags = EH_NONCONTINUABLE;
int_rec.NumberParameters = 1;
int_rec.ExceptionInformation[0] = ctx32.i386.Ecx;
first_chance = FALSE;
break;
case 0x2d: /* debug service */
ctx32.i386.Eip++;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx32.i386 );
int_rec.ExceptionCode = EXCEPTION_BREAKPOINT;
int_rec.ExceptionAddress = (void *)(ULONG_PTR)ctx32.i386.Eip;
int_rec.NumberParameters = 1;
int_rec.ExceptionInformation[0] = ctx32.i386.Eax;
break;
default:
ctx32.i386.Eip -= 2;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx32.i386 );
int_rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
int_rec.ExceptionAddress = (void *)(ULONG_PTR)ctx32.i386.Eip;
int_rec.NumberParameters = 2;
int_rec.ExceptionInformation[1] = 0xffffffff;
break;
}
*rec = int_rec;
break;
}
case IMAGE_FILE_MACHINE_ARMNT:
ctx32.arm.ContextFlags = CONTEXT_ARM_ALL;
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx32.arm );
break;
}
exception_record_64to32( &rec32, rec );
__TRY
{
raise_exception( rec, &context, first_chance );
}
__EXCEPT_ALL
{
call_user_exception_dispatcher( &rec32, &ctx32, NULL );
}
__ENDTRY
return STATUS_SUCCESS;
}
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