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wow64: Call the CPU backend to get/set the current thread context.

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This commit is contained in:
Alexandre Julliard 2023-02-10 12:55:36 +01:00
parent 51c3cfddfe
commit f555ee3b03
2 changed files with 47 additions and 57 deletions
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100
dlls/wow64/syscall.c
View file

@ -93,7 +93,9 @@ static HMODULE win32u_module;
/* cpu backend dll functions */
static void * (WINAPI *pBTCpuGetBopCode)(void);
static NTSTATUS (WINAPI *pBTCpuGetContext)(HANDLE,HANDLE,void *,void *);
static void (WINAPI *pBTCpuProcessInit)(void);
static NTSTATUS (WINAPI *pBTCpuSetContext)(HANDLE,HANDLE,void *,void *);
static void (WINAPI *pBTCpuSimulate)(void);
static NTSTATUS (WINAPI *pBTCpuResetToConsistentState)( EXCEPTION_POINTERS * );
static void * (WINAPI *p__wine_get_unix_opcode)(void);
@ -122,19 +124,6 @@ void __cdecl __wine_spec_unimplemented_stub( const char *module, const char *fun
}
static SIZE_T get_machine_context_size( USHORT machine )
{
switch (machine)
{
case IMAGE_FILE_MACHINE_I386: return sizeof(I386_CONTEXT);
case IMAGE_FILE_MACHINE_ARMNT: return sizeof(ARM_CONTEXT);
case IMAGE_FILE_MACHINE_AMD64: return sizeof(AMD64_CONTEXT);
case IMAGE_FILE_MACHINE_ARM64: return sizeof(ARM64_NT_CONTEXT);
default: return 0;
}
}
static EXCEPTION_RECORD *exception_record_32to64( const EXCEPTION_RECORD32 *rec32 )
{
EXCEPTION_RECORD *rec;
@ -172,7 +161,7 @@ static void call_user_exception_dispatcher( EXCEPTION_RECORD32 *rec, void *ctx32
CONTEXT_EX *context_ex, *src_ex = NULL;
ULONG size, flags;
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (ctx32_ptr)
{
@ -221,7 +210,7 @@ static void call_user_exception_dispatcher( EXCEPTION_RECORD32 *rec, void *ctx32
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserExceptionDispatcher;
ctx.EFlags &= ~(0x100|0x400|0x40000);
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
TRACE( "exception %08lx dispatcher %08lx stack %08lx eip %08lx\n",
rec->ExceptionCode, ctx.Eip, ctx.Esp, stack->context.Eip );
@ -237,7 +226,7 @@ static void call_user_exception_dispatcher( EXCEPTION_RECORD32 *rec, void *ctx32
} *stack;
ARM_CONTEXT ctx = { CONTEXT_ARM_ALL };
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct stack_layout *)(ULONG_PTR)(ctx.Sp & ~3) - 1;
stack->rec = *rec;
stack->context = ctx;
@ -248,7 +237,7 @@ static void call_user_exception_dispatcher( EXCEPTION_RECORD32 *rec, void *ctx32
ctx.Pc = pLdrSystemDllInitBlock->pKiUserExceptionDispatcher;
if (ctx.Pc & 1) ctx.Cpsr |= 0x20;
else ctx.Cpsr &= ~0x20;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
TRACE( "exception %08lx dispatcher %08lx stack %08lx pc %08lx\n",
rec->ExceptionCode, ctx.Pc, ctx.Sp, stack->context.Sp );
@ -375,8 +364,7 @@ NTSTATUS WINAPI wow64_NtContinue( UINT *args )
void *context = get_ptr( &args );
BOOLEAN alertable = get_ulong( &args );
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context,
context, get_machine_context_size( current_machine ));
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, context );
if (alertable) NtTestAlert();
return STATUS_SUCCESS;
}
@ -414,8 +402,7 @@ NTSTATUS WINAPI wow64_NtGetContextThread( UINT *args )
HANDLE handle = get_handle( &args );
WOW64_CONTEXT *context = get_ptr( &args );
return NtQueryInformationThread( handle, ThreadWow64Context, context,
get_machine_context_size( current_machine ), NULL );
return RtlWow64GetThreadContext( handle, context );
}
@ -490,8 +477,7 @@ NTSTATUS WINAPI wow64_NtRaiseException( UINT *args )
EXCEPTION_RECORD *rec = exception_record_32to64( rec32 );
CONTEXT context;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context,
context32, get_machine_context_size( current_machine ));
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, context32 );
__TRY
{
@ -514,8 +500,7 @@ NTSTATUS WINAPI wow64_NtSetContextThread( UINT *args )
HANDLE handle = get_handle( &args );
WOW64_CONTEXT *context = get_ptr( &args );
return NtSetInformationThread( handle, ThreadWow64Context,
context, get_machine_context_size( current_machine ));
return RtlWow64SetThreadContext( handle, context );
}
@ -784,8 +769,10 @@ static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **contex
module = load_64bit_module( get_cpu_dll_name() );
GET_PTR( BTCpuGetBopCode );
GET_PTR( BTCpuGetContext );
GET_PTR( BTCpuProcessInit );
GET_PTR( BTCpuResetToConsistentState );
GET_PTR( BTCpuSetContext );
GET_PTR( BTCpuSimulate );
GET_PTR( __wine_get_unix_opcode );
@ -812,17 +799,20 @@ static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **contex
*/
static void thread_init(void)
{
void *cpu_area_ctx;
RtlWow64GetCurrentCpuArea( NULL, &cpu_area_ctx, NULL );
/* 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 = { CONTEXT_I386_ALL };
I386_CONTEXT *ctx_ptr, *ctx = cpu_area_ctx;
ULONG *stack;
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
ctx_ptr = (I386_CONTEXT *)ULongToPtr( ctx.Esp ) - 1;
*ctx_ptr = ctx;
ctx_ptr = (I386_CONTEXT *)ULongToPtr( ctx->Esp ) - 1;
*ctx_ptr = *ctx;
stack = (ULONG *)ctx_ptr;
*(--stack) = 0;
@ -830,24 +820,23 @@ static void thread_init(void)
*(--stack) = 0;
*(--stack) = PtrToUlong( ctx_ptr );
*(--stack) = 0xdeadbabe;
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pLdrInitializeThunk;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
ctx->Esp = PtrToUlong( stack );
ctx->Eip = pLdrSystemDllInitBlock->pLdrInitializeThunk;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, ctx );
}
break;
case IMAGE_FILE_MACHINE_ARMNT:
{
ARM_CONTEXT *ctx_ptr, ctx = { CONTEXT_ARM_ALL };
ARM_CONTEXT *ctx_ptr, *ctx = cpu_area_ctx;
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
ctx_ptr = (ARM_CONTEXT *)ULongToPtr( ctx.Sp & ~15 ) - 1;
*ctx_ptr = 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;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
ctx->R0 = PtrToUlong( ctx_ptr );
ctx->Sp = PtrToUlong( ctx_ptr );
ctx->Pc = pLdrSystemDllInitBlock->pLdrInitializeThunk;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, ctx );
}
break;
@ -995,7 +984,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
} *stack;
I386_CONTEXT ctx = { CONTEXT_I386_FULL };
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct apc_stack_layout *)ULongToPtr( ctx.Esp & ~3 ) - 1;
stack->context_ptr = PtrToUlong( &stack->context );
stack->func = arg1 >> 32;
@ -1006,7 +995,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
stack->context.Eax = retval;
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserApcDispatcher;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
}
break;
@ -1020,7 +1009,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
} *stack;
ARM_CONTEXT ctx = { CONTEXT_ARM_FULL };
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
stack = (struct apc_stack_layout *)ULongToPtr( ctx.Sp & ~15 ) - 1;
stack->func = arg1 >> 32;
stack->context = ctx;
@ -1031,7 +1020,7 @@ void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CON
ctx.R1 = arg1;
ctx.R2 = arg2;
ctx.R3 = arg3;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
}
break;
}
@ -1063,14 +1052,14 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
{
case IMAGE_FILE_MACHINE_I386:
{
I386_CONTEXT orig_ctx, *ctx;
I386_CONTEXT orig_ctx, ctx = { CONTEXT_I386_FULL };
void *args_data;
ULONG *stack;
RtlWow64GetCurrentCpuArea( NULL, (void **)&ctx, NULL );
orig_ctx = *ctx;
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
orig_ctx = ctx;
stack = args_data = ULongToPtr( (ctx->Esp - len) & ~15 );
stack = args_data = ULongToPtr( (ctx.Esp - len) & ~15 );
memcpy( args_data, args, len );
*(--stack) = 0;
*(--stack) = len;
@ -1078,13 +1067,14 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
*(--stack) = id;
*(--stack) = 0xdeadbabe;
ctx->Esp = PtrToUlong( stack );
ctx->Eip = pLdrSystemDllInitBlock->pKiUserCallbackDispatcher;
ctx.Esp = PtrToUlong( stack );
ctx.Eip = pLdrSystemDllInitBlock->pKiUserCallbackDispatcher;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate();
else
*ctx = orig_ctx;
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
break;
@ -1093,7 +1083,8 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
ARM_CONTEXT orig_ctx, ctx = { CONTEXT_ARM_FULL };
void *args_data;
NtQueryInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx), NULL );
pBTCpuGetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
orig_ctx = ctx;
args_data = ULongToPtr( (ctx.Sp - len) & ~15 );
memcpy( args_data, args, len );
@ -1103,13 +1094,12 @@ NTSTATUS WINAPI Wow64KiUserCallbackDispatcher( ULONG id, void *args, ULONG len,
ctx.R2 = len;
ctx.Sp = PtrToUlong( args_data );
ctx.Pc = pLdrSystemDllInitBlock->pKiUserCallbackDispatcher;
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context, &ctx, sizeof(ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &ctx );
if (!__wine_setjmpex( &frame.jmpbuf, NULL ))
cpu_simulate();
else
NtSetInformationThread( GetCurrentThread(), ThreadWow64Context,
&orig_ctx, sizeof(orig_ctx) );
pBTCpuSetContext( GetCurrentThread(), GetCurrentProcess(), NULL, &orig_ctx );
}
break;
}

4
dlls/wow64cpu/cpu.c
View file

@ -353,7 +353,7 @@ void * WINAPI __wine_get_unix_opcode(void)
*/
NTSTATUS WINAPI BTCpuGetContext( HANDLE thread, HANDLE process, void *unknown, I386_CONTEXT *ctx )
{
return NtQueryInformationThread( thread, ThreadWow64Context, ctx, sizeof(*ctx), NULL );
return RtlWow64GetThreadContext( thread, ctx );
}
@ -362,7 +362,7 @@ NTSTATUS WINAPI BTCpuGetContext( HANDLE thread, HANDLE process, void *unknown, I
*/
NTSTATUS WINAPI BTCpuSetContext( HANDLE thread, HANDLE process, void *unknown, I386_CONTEXT *ctx )
{
return NtSetInformationThread( thread, ThreadWow64Context, ctx, sizeof(*ctx) );
return RtlWow64SetThreadContext( thread, ctx );
}