opcodes.hh File Reference

All the individual p-code operations. More...

#include <string>

Enumerations
enum	OpCode {   CPUI_COPY = 1, CPUI_LOAD = 2, CPUI_STORE = 3, CPUI_BRANCH = 4,   CPUI_CBRANCH = 5, CPUI_BRANCHIND = 6, CPUI_CALL = 7, CPUI_CALLIND = 8,   CPUI_CALLOTHER = 9, CPUI_RETURN = 10, CPUI_INT_EQUAL = 11, CPUI_INT_NOTEQUAL = 12,   CPUI_INT_SLESS = 13, CPUI_INT_SLESSEQUAL = 14, CPUI_INT_LESS = 15, CPUI_INT_LESSEQUAL = 16,   CPUI_INT_ZEXT = 17, CPUI_INT_SEXT = 18, CPUI_INT_ADD = 19, CPUI_INT_SUB = 20,   CPUI_INT_CARRY = 21, CPUI_INT_SCARRY = 22, CPUI_INT_SBORROW = 23, CPUI_INT_2COMP = 24,   CPUI_INT_NEGATE = 25, CPUI_INT_XOR = 26, CPUI_INT_AND = 27, CPUI_INT_OR = 28,   CPUI_INT_LEFT = 29, CPUI_INT_RIGHT = 30, CPUI_INT_SRIGHT = 31, CPUI_INT_MULT = 32,   CPUI_INT_DIV = 33, CPUI_INT_SDIV = 34, CPUI_INT_REM = 35, CPUI_INT_SREM = 36,   CPUI_BOOL_NEGATE = 37, CPUI_BOOL_XOR = 38, CPUI_BOOL_AND = 39, CPUI_BOOL_OR = 40,   CPUI_FLOAT_EQUAL = 41, CPUI_FLOAT_NOTEQUAL = 42, CPUI_FLOAT_LESS = 43, CPUI_FLOAT_LESSEQUAL = 44,   CPUI_FLOAT_NAN = 46, CPUI_FLOAT_ADD = 47, CPUI_FLOAT_DIV = 48, CPUI_FLOAT_MULT = 49,   CPUI_FLOAT_SUB = 50, CPUI_FLOAT_NEG = 51, CPUI_FLOAT_ABS = 52, CPUI_FLOAT_SQRT = 53,   CPUI_FLOAT_INT2FLOAT = 54, CPUI_FLOAT_FLOAT2FLOAT = 55, CPUI_FLOAT_TRUNC = 56, CPUI_FLOAT_CEIL = 57,   CPUI_FLOAT_FLOOR = 58, CPUI_FLOAT_ROUND = 59, CPUI_MULTIEQUAL = 60, CPUI_INDIRECT = 61,   CPUI_PIECE = 62, CPUI_SUBPIECE = 63, CPUI_CAST = 64, CPUI_PTRADD = 65,   CPUI_PTRSUB = 66, CPUI_SEGMENTOP = 67, CPUI_CPOOLREF = 68, CPUI_NEW = 69,   CPUI_MAX = 70 }
	The op-code defining a specific p-code operation (PcodeOp) More...

Functions
const char *	get_opname (OpCode opc)
	Convert an OpCode to the name as a string. More...
OpCode	get_opcode (const string &nm)
	Convert a name string to the matching OpCode. More...
OpCode	get_booleanflip (OpCode opc, bool &reorder)
	Get the complementary OpCode. More...

Detailed Description

All the individual p-code operations.

Enumeration Type Documentation

OpCode

enum OpCode

The op-code defining a specific p-code operation (PcodeOp)

These break up into categories:

• Branching operations
• Load and Store
• Comparison operations
• Arithmetic operations
• Logical operations
• Extension and truncation operations

Enumerator
CPUI_COPY	Copy one operand to another.
CPUI_LOAD	Load from a pointer into a specified address space.
CPUI_STORE	Store at a pointer into a specified address space.
CPUI_BRANCH	Always branch.
CPUI_CBRANCH	Conditional branch.
CPUI_BRANCHIND	Indirect branch (jumptable)
CPUI_CALL	Call to an absolute address.
CPUI_CALLIND	Call through an indirect address.
CPUI_CALLOTHER	User-defined operation.
CPUI_RETURN	Return from subroutine.
CPUI_INT_EQUAL	Integer comparison, equality (==)
CPUI_INT_NOTEQUAL	Integer comparison, in-equality (!=)
CPUI_INT_SLESS	Integer comparison, signed less-than (<)
CPUI_INT_SLESSEQUAL	Integer comparison, signed less-than-or-equal (<=)
CPUI_INT_LESS	Integer comparison, unsigned less-than (<)
CPUI_INT_LESSEQUAL	Integer comparison, unsigned less-than-or-equal (<=)
CPUI_INT_ZEXT	Zero extension.
CPUI_INT_SEXT	Sign extension.
CPUI_INT_ADD	Addition, signed or unsigned (+)
CPUI_INT_SUB	Subtraction, signed or unsigned (-)
CPUI_INT_CARRY	Test for unsigned carry.
CPUI_INT_SCARRY	Test for signed carry.
CPUI_INT_SBORROW	Test for signed borrow.
CPUI_INT_2COMP	Twos complement.
CPUI_INT_NEGATE	Logical/bitwise negation (~)
CPUI_INT_XOR	Logical/bitwise exclusive-or (^)
CPUI_INT_AND	Logical/bitwise and (&)
CPUI_INT_OR	Logical/bitwise or (|)
CPUI_INT_LEFT	Left shift (<<)
CPUI_INT_RIGHT	Right shift, logical (>>)
CPUI_INT_SRIGHT	Right shift, arithmetic (>>)
CPUI_INT_MULT	Integer multiplication, signed and unsigned (*)
CPUI_INT_DIV	Integer division, unsigned (/)
CPUI_INT_SDIV	Integer division, signed (/)
CPUI_INT_REM	Remainder/modulo, unsigned (%)
CPUI_INT_SREM	Remainder/modulo, signed (%)
CPUI_BOOL_NEGATE	Boolean negate (!)
CPUI_BOOL_XOR	Boolean exclusive-or (^^)
CPUI_BOOL_AND	Boolean and (&&)
CPUI_BOOL_OR	Boolean or (||)
CPUI_FLOAT_EQUAL	Floating-point comparison, equality (==)
CPUI_FLOAT_NOTEQUAL	Floating-point comparison, in-equality (!=)
CPUI_FLOAT_LESS	Floating-point comparison, less-than (<)
CPUI_FLOAT_LESSEQUAL	Floating-point comparison, less-than-or-equal (<=)
CPUI_FLOAT_NAN	Not-a-number test (NaN)
CPUI_FLOAT_ADD	Floating-point addition (+)
CPUI_FLOAT_DIV	Floating-point division (/)
CPUI_FLOAT_MULT	Floating-point multiplication (*)
CPUI_FLOAT_SUB	Floating-point subtraction (-)
CPUI_FLOAT_NEG	Floating-point negation (-)
CPUI_FLOAT_ABS	Floating-point absolute value (abs)
CPUI_FLOAT_SQRT	Floating-point square root (sqrt)
CPUI_FLOAT_INT2FLOAT	Convert an integer to a floating-point.
CPUI_FLOAT_FLOAT2FLOAT	Convert between different floating-point sizes.
CPUI_FLOAT_TRUNC	Round towards zero.
CPUI_FLOAT_CEIL	Round towards +infinity.
CPUI_FLOAT_FLOOR	Round towards -infinity.
CPUI_FLOAT_ROUND	Round towards nearest.
CPUI_MULTIEQUAL	Phi-node operator.
CPUI_INDIRECT	Copy with an indirect effect.
CPUI_PIECE	Concatenate.
CPUI_SUBPIECE	Truncate.
CPUI_CAST	Cast from one data-type to another.
CPUI_PTRADD	Index into an array ([])
CPUI_PTRSUB	Drill down to a sub-field (->)
CPUI_SEGMENTOP	Look-up a segmented address.
CPUI_CPOOLREF	Recover a value from the constant pool.
CPUI_NEW	Allocate a new object (new)
CPUI_MAX	Value indicating the end of the op-code values.

Function Documentation

get_booleanflip()

OpCode get_booleanflip	(	OpCode	opc,
		bool &	reorder
	)

Get the complementary OpCode.

Every comparison operation has a complementary form that produces the opposite output on the same inputs. Set reorder to true if the complimentary operation involves reordering the input parameters.

Parameters

opc	is the OpCode to complement
reorder	is set to true if the inputs need to be reordered

Returns

the complementary OpCode or CPUI_MAX if not given a comparison operation

References CPUI_BOOL_NEGATE, CPUI_COPY, CPUI_FLOAT_EQUAL, CPUI_FLOAT_LESS, CPUI_FLOAT_LESSEQUAL, CPUI_FLOAT_NOTEQUAL, CPUI_INT_EQUAL, CPUI_INT_LESS, CPUI_INT_LESSEQUAL, CPUI_INT_NOTEQUAL, CPUI_INT_SLESS, CPUI_INT_SLESSEQUAL, and CPUI_MAX.

Referenced by RuleBoolNegate::applyOp(), PrintC::checkPrintNegation(), ConditionMarker::finalJudgement(), and opFlipInPlaceExecute().

get_opcode()

OpCode get_opcode

(

const string &

nm

)

Convert a name string to the matching OpCode.

Parameters

nm	is the name of an operation

Returns

the corresponding OpCode value

References CPUI_MAX.

get_opname()

const char* get_opname

(

OpCode

opc

)

Convert an OpCode to the name as a string.

Parameters

opc	is an OpCode value

Returns

the name of the operation as a string

Referenced by OpBehavior::evaluateBinary(), OpBehavior::evaluateUnary(), EmulateSnippet::executeBranchind(), EmulateSnippet::executeCall(), EmulateSnippet::executeCallind(), EmulateSnippet::executeCallother(), EmulateSnippet::executeCpoolRef(), EmulateSnippet::executeIndirect(), EmulateSnippet::executeMultiequal(), EmulateSnippet::executeNew(), EmulateSnippet::executeSegmentOp(), EmulateSnippet::executeStore(), and BlockCondition::saveXmlHeader().