#ifndef X86MODRMFILTERS_H
#define X86MODRMFILTERS_H
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
namespace llvm {
/// ModRMFilter - Abstract base class for clases that recognize patterns in
/// ModR/M bytes.
class ModRMFilter {
+ virtual void anchor();
public:
/// Destructor - Override as necessary.
virtual ~ModRMFilter() { }
/// require a ModR/M byte or instructions where the entire ModR/M byte is used
/// for operands.
class DumbFilter : public ModRMFilter {
+ virtual void anchor();
public:
bool isDumb() const {
return true;
/// Some instructions are classified based on whether they are 11 or anything
/// else. This filter performs that classification.
class ModFilter : public ModRMFilter {
-private:
+ virtual void anchor();
bool R;
public:
/// Constructor
///
- /// @r - True if the mod bits of the ModR/M byte must be 11; false
+ /// \param r True if the mod bits of the ModR/M byte must be 11; false
/// otherwise. The name r derives from the fact that the mod
/// bits indicate whether the R/M bits [bits 2-0] signify a
/// register or a memory operand.
/// possible value. Otherwise, there is one instruction for each value of the
/// nnn field [bits 5-3], known elsewhere as the reg field.
class EscapeFilter : public ModRMFilter {
-private:
+ virtual void anchor();
bool C0_FF;
uint8_t NNN_or_ModRM;
public:
/// Constructor
///
- /// @c0_ff - True if the ModR/M byte must fall between 0xc0 and 0xff;
- /// false otherwise.
- /// @nnn_or_modRM - If c0_ff is true, the required value of the entire ModR/M
- /// byte. If c0_ff is false, the required value of the nnn
- /// field.
+ /// \param c0_ff True if the ModR/M byte must fall between 0xc0 and 0xff;
+ /// false otherwise.
+ ///
+ /// \param nnn_or_modRM If c0_ff is true, the required value of the entire
+ /// ModR/M byte. If c0_ff is false, the required value
+ /// of the nnn field.
EscapeFilter(bool c0_ff, uint8_t nnn_or_modRM) :
ModRMFilter(),
C0_FF(c0_ff),
/// maps to a single instruction. Such instructions require the ModR/M byte
/// to fall between 0xc0 and 0xff.
class AddRegEscapeFilter : public ModRMFilter {
-private:
+ virtual void anchor();
uint8_t ModRM;
public:
/// Constructor
///
- /// @modRM - The value of the ModR/M byte when the register operand
- /// refers to the first register in the register set.
+ /// \param modRM The value of the ModR/M byte when the register operand
+ /// refers to the first register in the register set.
AddRegEscapeFilter(uint8_t modRM) : ModRM(modRM) {
}
/// ExtendedFilter - Extended opcodes are classified based on the value of the
/// mod field [bits 7-6] and the value of the nnn field [bits 5-3].
class ExtendedFilter : public ModRMFilter {
-private:
+ virtual void anchor();
bool R;
uint8_t NNN;
public:
/// Constructor
///
- /// @r - True if the mod field must be set to 11; false otherwise.
- /// The name is explained at ModFilter.
- /// @nnn - The required value of the nnn field.
+ /// \param r True if the mod field must be set to 11; false otherwise.
+ /// The name is explained at ModFilter.
+ /// \param nnn The required value of the nnn field.
ExtendedFilter(bool r, uint8_t nnn) :
ModRMFilter(),
R(r),
/// ExactFilter - The occasional extended opcode (such as VMCALL or MONITOR)
/// requires the ModR/M byte to have a specific value.
-class ExactFilter : public ModRMFilter
-{
-private:
+class ExactFilter : public ModRMFilter {
+ virtual void anchor();
uint8_t ModRM;
public:
/// Constructor
///
- /// @modRM - The required value of the full ModR/M byte.
+ /// \param modRM The required value of the full ModR/M byte.
ExactFilter(uint8_t modRM) :
ModRMFilter(),
ModRM(modRM) {