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ntoskrnl.exe: Support 'or Ev, Gv' opcode for x86_64. 

Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2020-05-22 15:37:50 +03:00 committed by Alexandre Julliard
parent da55f010df
commit e7778dd9f9
1 changed files with 46 additions and 7 deletions
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53
dlls/ntoskrnl.exe/instr.c
View File

@ -35,6 +35,12 @@
#define KSHARED_USER_DATA_PAGE_SIZE 0x1000
enum instr_op
{
INSTR_OP_MOV,
INSTR_OP_OR,
};
#ifdef __i386__
WINE_DEFAULT_DEBUG_CHANNEL(int);
@ -503,20 +509,42 @@ static inline int get_op_size( int long_op, int rex )
}
/* store an operand into a register */
static void store_reg_word( CONTEXT *context, BYTE regmodrm, const BYTE *addr, int long_op, int rex )
static void store_reg_word( CONTEXT *context, BYTE regmodrm, const BYTE *addr, int long_op, int rex,
enum instr_op op )
{
int index = REGMODRM_REG( regmodrm, rex );
BYTE *reg = (BYTE *)get_int_reg( context, index );
memcpy( reg, addr, get_op_size( long_op, rex ) );
int op_size = get_op_size( long_op, rex );
int i;
switch (op)
{
case INSTR_OP_MOV:
memcpy( reg, addr, op_size );
break;
case INSTR_OP_OR:
for (i = 0; i < op_size; ++i)
reg[i] |= addr[i];
break;
}
}
/* store an operand into a byte register */
static void store_reg_byte( CONTEXT *context, BYTE regmodrm, const BYTE *addr, int rex )
static void store_reg_byte( CONTEXT *context, BYTE regmodrm, const BYTE *addr, int rex, enum instr_op op )
{
int index = REGMODRM_REG( regmodrm, rex );
BYTE *reg = (BYTE *)get_int_reg( context, index );
if (!rex && index >= 4 && index < 8) reg -= (4 * sizeof(DWORD64) - 1); /* special case: ah, ch, dh, bh */
*reg = *addr;
switch (op)
{
case INSTR_OP_MOV:
*reg = *addr;
break;
case INSTR_OP_OR:
*reg |= *addr;
break;
}
}
/***********************************************************************
@ -798,7 +826,7 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
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 );
store_reg_word( context, instr[2], (BYTE *)&temp, long_op, rex, INSTR_OP_MOV );
context->Rip += prefixlen + len + 2;
return ExceptionContinueExecution;
}
@ -809,6 +837,7 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
case 0x8a: /* mov Eb, Gb */
case 0x8b: /* mov Ev, Gv */
case 0x0b: /* or Ev, Gv */
{
BYTE *data = INSTR_GetOperandAddr( context, instr + 1, prefixlen + 1, long_addr,
rex, segprefix, &len );
@ -820,8 +849,18 @@ static DWORD emulate_instruction( EXCEPTION_RECORD *rec, CONTEXT *context )
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;
case 0x8b: store_reg_word( context, instr[1], wine_user_shared_data + offset, long_op, rex ); break;
case 0x8a:
store_reg_byte( context, instr[1], wine_user_shared_data + offset,
rex, INSTR_OP_MOV );
break;
case 0x8b:
store_reg_word( context, instr[1], wine_user_shared_data + offset,
long_op, rex, INSTR_OP_MOV );
break;
case 0x0b:
store_reg_word( context, instr[1], wine_user_shared_data + offset,
long_op, rex, INSTR_OP_OR );
break;
}
context->Rip += prefixlen + len + 1;
return ExceptionContinueExecution;