tvm

package

v0.0.0-...-4262487 Latest Latest Go to latest Published: Jan 13, 2018 License: Apache-2.0 Imports: 8 Imported by: 3

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/EricYT/tinyvm-go

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
Variables
func NewHtabCtx() *htabCtx
func NewLexerCtx() *lexerCtx
func ParseValue(token []byte) int
func ReadFile(filename string, extension string) ([]byte, error)
type Ctx
- func NewCtx() *Ctx
- func (ctx *Ctx) End() bool
- func (ctx *Ctx) Interpret(filename string) error
- func (ctx *Ctx) ParseLabels(lexer *lexerCtx) error
- func (ctx *Ctx) ParseProgram(lexer *lexerCtx) error
- func (ctx *Ctx) Run() error
- func (ctx *Ctx) Step(instrIdx *int) error
type Line
type Mem
- func NewMem(size int) *Mem
- func (m *Mem) AllRegisterInfos() string
- func (m *Mem) GetFLAGS() int
- func (m *Mem) GetRegisterI32(reg Register) *int
- func (m *Mem) GetRegisterI32Ptr(reg Register) *int
- func (m *Mem) GetRemainder() int
- func (m *Mem) SetRegisterI32(reg Register, v int)
- func (m *Mem) SetRegisterI32Ptr(reg Register, v *int)
- func (m *Mem) StackCreate(size int)
- func (m *Mem) StackPop() *int
- func (m *Mem) StackPush(item *int)
type Opcode
- func (o Opcode) String() string
type Prog
- func NewProg() *Prog
- func (prog *Prog) Args(instrIdx int) []*int
- func (prog *Prog) NumInstr() int
- func (prog *Prog) OpCode(instrIdx int) Opcode
- func (prog *Prog) Start() int
- func (prog *Prog) Tokens(instrIdx int) [][]byte
type Register
- func (r Register) String() string
type Token

Constants ¶

View Source

const (
	KEY_LENGTH int = 64
	HTAB_SIZE  int = 4096
)

View Source

const (
	NUM_REGISTERS int = 17

	MIN_MEMORY_SIZE int = 64 * 1024 * 1024 /* 64 MB */
)

View Source

const (
	TOK_INCLUDE string = "%include"
	TOK_DEFINE  string = "%define"
)

View Source

const (
	MAX_ARGS int = 2
)

Variables ¶

View Source

var (
	ErrorHtabCtxKeyAlreadyExists error = errors.New("htab: key already exists")
	ErrorHtabCtxKeyNotFound      error = errors.New("htab: key not found")
)

View Source

var (
	ErrorLabelParseLabelDefineTwice error = errors.New("parser: label defined twice")

	ErrorProgParseInstrNotExists error = errors.New("parser: no instruction exists")
)

View Source

var (
	ErrorPreprocessDefineMissArgs       error = errors.New("preprocess: define missing arguments")
	ErrorPreprocessDefineWrongArgs      error = errors.New("preprocess: define wrong arguments")
	ErrorPreprocessDefineMultipleDefine error = errors.New("preprocess: multiple define")
)

Functions ¶

func NewHtabCtx ¶

func NewHtabCtx() *htabCtx

func NewLexerCtx ¶

func NewLexerCtx() *lexerCtx

func ParseValue ¶

func ParseValue(token []byte) int

utils

func ReadFile ¶

func ReadFile(filename string, extension string) ([]byte, error)

utils

Types ¶

type Ctx ¶

type Ctx struct {
	Prog *Prog
	Mem  *Mem
}

func NewCtx ¶

func NewCtx() *Ctx

func (*Ctx) End ¶

func (ctx *Ctx) End() bool

func (*Ctx) Interpret ¶

func (ctx *Ctx) Interpret(filename string) error

func (*Ctx) ParseLabels ¶

func (ctx *Ctx) ParseLabels(lexer *lexerCtx) error

func (*Ctx) ParseProgram ¶

func (ctx *Ctx) ParseProgram(lexer *lexerCtx) error

func (*Ctx) Run ¶

func (ctx *Ctx) Run() error

func (*Ctx) Step ¶

func (ctx *Ctx) Step(instrIdx *int) error

type Line ¶

type Line []byte

type Mem ¶

type Mem struct {
	FLAGS int
	// contains filtered or unexported fields
}

func NewMem ¶

func NewMem(size int) *Mem

func (*Mem) AllRegisterInfos ¶

func (m *Mem) AllRegisterInfos() string

func (*Mem) GetFLAGS ¶

func (m *Mem) GetFLAGS() int

func (*Mem) GetRegisterI32 ¶

func (m *Mem) GetRegisterI32(reg Register) *int

func (*Mem) GetRegisterI32Ptr ¶

func (m *Mem) GetRegisterI32Ptr(reg Register) *int

func (*Mem) GetRemainder ¶

func (m *Mem) GetRemainder() int

func (*Mem) SetRegisterI32 ¶

func (m *Mem) SetRegisterI32(reg Register, v int)

func (*Mem) SetRegisterI32Ptr ¶

func (m *Mem) SetRegisterI32Ptr(reg Register, v *int)

func (*Mem) StackCreate ¶

func (m *Mem) StackCreate(size int)

Initialize our stack by setting the base pointer and stack pointer

func (*Mem) StackPop ¶

func (m *Mem) StackPop() *int

func (*Mem) StackPush ¶

func (m *Mem) StackPush(item *int)

type Opcode ¶

type Opcode int

tvm opcode map

const (
	NOP Opcode = iota
	INT
	MOV

	PUSH
	POP
	PUSHF
	POPF

	INC
	DEC
	ADD
	SUB
	MUL
	DIV
	MOD
	REM

	NOT
	XOR
	OR
	AND
	SHL
	SHR

	CMP
	JMP
	CALL
	RET

	JE
	JNE
	JG
	JGE
	JL
	JLE

	PRN
)

func (Opcode) String ¶

func (o Opcode) String() string

type Prog ¶

type Prog struct {
	// contains filtered or unexported fields
}

func NewProg ¶

func NewProg() *Prog

func (*Prog) Args ¶

func (prog *Prog) Args(instrIdx int) []*int

func (*Prog) NumInstr ¶

func (prog *Prog) NumInstr() int

func (*Prog) OpCode ¶

func (prog *Prog) OpCode(instrIdx int) Opcode

func (*Prog) Start ¶

func (prog *Prog) Start() int

func (*Prog) Tokens ¶

func (prog *Prog) Tokens(instrIdx int) [][]byte

type Register ¶

type Register int

const (
	EAX Register = iota
	EBX
	ECX
	EDX

	ESI
	EDI
	ESP
	EBP

	EIP

	R08
	R09
	R10
	R11

	R12
	R13
	R14
	R15
)

func (Register) String ¶

func (r Register) String() string

type Token ¶

type Token []byte

Source Files ¶

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