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ntoskrnl.exe: Emulate full user shared data area range. 

Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2020-05-18 12:25:50 +03:00 committed by Alexandre Julliard
parent 1a7b4fb9c1
commit b40be1d43b
1 changed files with 9 additions and 3 deletions
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12
dlls/ntoskrnl.exe/instr.c
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@ -33,6 +33,8 @@
#include "wine/debug.h"
#include "wine/exception.h"
#define KSHARED_USER_DATA_PAGE_SIZE 0x1000
#ifdef __i386__
WINE_DEFAULT_DEBUG_CHANNEL(int);
@ -790,9 +792,11 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
unsigned int data_size = (instr[1] == 0xb7) ? 2 : 1;
SIZE_T offset = data - user_shared_data;
if (offset <= sizeof(KSHARED_USER_DATA) - data_size)
if (offset <= KSHARED_USER_DATA_PAGE_SIZE - data_size)
{
ULONGLONG temp = 0;
TRACE("USD offset %#x at %p.\n", (unsigned int)offset, (void *)context->Rip);
memcpy( &temp, wine_user_shared_data + offset, data_size );
store_reg_word( context, instr[2], (BYTE *)&temp, long_op, rex );
context->Rip += prefixlen + len + 2;
@ -811,8 +815,9 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
unsigned int data_size = (*instr == 0x8b) ? get_op_size( long_op, rex ) : 1;
SIZE_T offset = data - user_shared_data;
if (offset <= sizeof(KSHARED_USER_DATA) - data_size)
if (offset <= KSHARED_USER_DATA_PAGE_SIZE - data_size)
{
TRACE("USD offset %#x at %p.\n", (unsigned int)offset, (void *)context->Rip);
switch (*instr)
{
case 0x8a: store_reg_byte( context, instr[1], wine_user_shared_data + offset, rex ); break;
@ -832,8 +837,9 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
SIZE_T offset = data - user_shared_data;
len = long_addr ? sizeof(DWORD64) : sizeof(DWORD);
if (offset <= sizeof(KSHARED_USER_DATA) - data_size)
if (offset <= KSHARED_USER_DATA_PAGE_SIZE - data_size)
{
TRACE("USD offset %#x at %p.\n", (unsigned int)offset, (void *)context->Rip);
memcpy( &context->Rax, wine_user_shared_data + offset, data_size );
context->Rip += prefixlen + len + 1;
return ExceptionContinueExecution;