arch

package
v0.0.0-...-94861f8 Latest Latest
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 Go to latest Published: May 3, 2017 License: BSD-3-Clause, Unlicense Imports: 4 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	Empty = iota
	AddrAuto
	AddrStatic
	AddrGlobal
	AddrLabel
	Literal
	AutoByte
	AutoWord
	StaticByte
	StaticWord
	GlobalByte
	GlobalWord
)

Addressing modes for the code synthesizer.

View Source 
const (
	Cnone = iota
	Equal
	NotEqual
	Less
	Greater
	LessEqual
	GreaterEqual
	Below
	Above
	BelowEqual
	AboveEqual
)

Comparison operations.

View Source 
const (
	Bnone = iota
	LogNot
	Normalize
)

Boolean operations.

Variables

This section is empty.

Functions

This section is empty.

Types

type Backend 

type Backend interface {
	Add()
	Align()
	And()
	Bool()
	BrEq(n int)
	BrFalse(n int)
	BrGe(n int)
	BrGt(n int)
	BrLe(n int)
	BrLt(n int)
	BrNe(n int)
	BrTrue(n int)
	BrUge(n int)
	BrUgt(n int)
	BrUle(n int)
	BrUlt(n int)
	Call(s string)
	Calr()
	CalSwtch()
	Case(v, l int)
	Clear()
	Clear2()
	Data()
	Dec1ib()
	Dec1iw()
	Dec1pi(v int)
	Dec2ib()
	Dec2iw()
	Dec2pi(v int)
	Decgb(s string)
	Decgw(s string)
	Declb(a int)
	Declw(a int)
	Decpg(s string, v int)
	Decpl(a, v int)
	Decps(a, v int)
	Decsb(a int)
	Decsw(a int)
	Defb(v int)
	Defc(c int)
	Defl(v int)
	Defp(v int)
	Defw(v int)
	Div()
	Entry()
	Eq()
	Exit()
	Gbss(s string, z int)
	Ge()
	Gt()
	Inc1ib()
	Inc1iw()
	Inc1pi(v int)
	Inc2ib()
	Inc2iw()
	Inc2pi(v int)
	Incgb(s string)
	Incgw(s string)
	Inclb(a int)
	Inclw(a int)
	Incpg(s string, v int)
	Incpl(a, v int)
	Incps(a, v int)
	Incsb(a int)
	Incsw(a int)
	Indb()
	Indw()
	Initlw(v, a int)
	Or()
	Jump(n int)
	Lbss(s string, z int)
	Ldga(s string)
	Ldgb(s string)
	Ldgw(s string)
	Ldinc()
	Ldla(n int)
	Ldlab(id int)
	Ldlb(n int)
	Ldlw(n int)
	Ldsa(n int)
	Ldsb(n int)
	Ldsw(n int)
	LdSwtch(n int)
	Le()
	Lit(v int)
	Load2() bool
	LogNot()
	Lt()
	Mod()
	Mul()
	Ne()
	Neg()
	Not()
	Pop2()
	PopPtr()
	Postlude()
	Prelude()
	Public(s string)
	Push()
	PushLit(n int)
	Scale()
	Scale2()
	Scale2By(v int)
	ScaleBy(v int)
	Shl()
	Shr()
	Stack(n int)
	Storgb(s string)
	Storgw(s string)
	Storib()
	Storiw()
	Storlb(n int)
	Storlw(n int)
	Storsb(n int)
	Storsw(n int)
	Sub()
	Swap()
	Text()
	Uge()
	Ugt()
	Ule()
	Ult()
	Unscale()
	UnscaleBy(v int)
	Xor()
}

Backend represents an interface a architecture specific code generator must have for the compiler to use for generating code.

type Emitter 

type Emitter struct {
	types.Sizes
	W io.Writer
	B Backend

	Q      synth
	Retlab int
	Acc    bool
	// contains filtered or unexported fields
}

Emitter is uses to emit code.

func (*Emitter) Add 

func (c *Emitter) Add(p1, p2 types.Type, swapped bool) types.Type

Add emits code for addition.

func (*Emitter) Addr 

func (c *Emitter) Addr(lv LV)

Addr emits code for queuing up addresses.

func (*Emitter) Align 

func (c *Emitter) Align(k, align int)

Align emits code to align to an alignment starting at k.

func (*Emitter) AlignText 

func (c *Emitter) AlignText()

AlignText emits code for aligning the text segment.

func (*Emitter) And 

func (c *Emitter) And()

And emits code for the bitwise and operator.

func (*Emitter) BSS 

func (c *Emitter) BSS(name string, length int, static bool)

BSS emits code to store things on the .bss

func (*Emitter) Bool 

func (c *Emitter) Bool()

Bool emits code for a bool.

func (*Emitter) BrFalse 

func (c *Emitter) BrFalse(dest int)

BrFalse emits code for branching.

func (*Emitter) BrTrue 

func (c *Emitter) BrTrue(dest int)

BrTrue emits code for branching.

func (*Emitter) Branch 

func (c *Emitter) Branch(dest int, inv bool)

Branch emits code for branching.

func (*Emitter) Call 

func (c *Emitter) Call(lv LV)

Call emits code to call a function with a name

func (*Emitter) Calr 

func (c *Emitter) Calr(lv LV)

Calr emits code to call a function pointer.

func (*Emitter) Clear 

func (c *Emitter) Clear(q bool)

Clear resets the accumulator.

func (*Emitter) Commit 

func (c *Emitter) Commit()

Commit flushes the code synthesizer to load and spill the registers to memory.

func (*Emitter) Data 

func (c *Emitter) Data()

Data emits code to switch to the data segment.

func (*Emitter) Defb 

func (c *Emitter) Defb(v int)

Defb emits code for byte declaration.

func (*Emitter) Defp 

func (c *Emitter) Defp(v int)

Defp emits code for pointer declaration.

func (*Emitter) Defs 

func (c *Emitter) Defs(s string)

Defs emits code for storing a string on a data segment.

func (*Emitter) Defw 

func (c *Emitter) Defw(v int)

Defw emits code for word declaration.

func (*Emitter) Div 

func (c *Emitter) Div(swapped bool)

Div emits code for the division operator.

func (*Emitter) Entry 

func (c *Emitter) Entry()

Entry emits code for entry.

func (*Emitter) Exit 

func (c *Emitter) Exit()

Exit emits code for exit.

func (*Emitter) Gen 

func (c *Emitter) Gen(s string)

Gen emits a line of assembly with an instruction.

func (*Emitter) Gsym 

func (c *Emitter) Gsym(s string) string

Gsym returns a label string with the code prefix for string s.

func (*Emitter) Inc 

func (c *Emitter) Inc(lv LV, inc, pre bool)

Inc emits code to increment a variable.

func (*Emitter) Ind 

func (c *Emitter) Ind(lv LV)

Ind emits code to do an indirection.

func (*Emitter) Int 

func (c *Emitter) Int() int

Int returns the size of an integer.

func (*Emitter) Jump 

func (c *Emitter) Jump(dest int)

Jump emits code to jump to a destination.

func (*Emitter) Lab 

func (c *Emitter) Lab(id int)

Lab emits a label.

func (*Emitter) Label 

func (c *Emitter) Label() int

Label generates a new label ID for labels.

func (*Emitter) Labname 

func (c *Emitter) Labname(id int) string

Labname returns a label name with an lprefix.

func (*Emitter) Ldlab 

func (c *Emitter) Ldlab(id int)

Ldlab queues an address label with id.

func (*Emitter) Lgen 

func (c *Emitter) Lgen(s, inst string, n int)

Lgen emits an instruction that acts on a label.

func (*Emitter) Lgen2 

func (c *Emitter) Lgen2(s string, v1, v2 int)

Lgen2 emits an instruction with one argument that acts on a label.

func (*Emitter) Lit 

func (c *Emitter) Lit(v int)

Lit queues a literal.

func (*Emitter) Load 

func (c *Emitter) Load()

Load enables the accumulator, meaning it tells the later code generation it must spills if it wants to mess with the accumulator.

func (*Emitter) LocInit 

func (c *Emitter) LocInit(localInits [][2]int)

LocInit emits code for initializing words with pair (addr, value)

func (*Emitter) LogBr 

func (c *Emitter) LogBr(dest int, inv bool)

LogBr emits code for logical branching.

func (*Emitter) LogNot 

func (c *Emitter) LogNot()

LogNot emits code for a logical not.

func (*Emitter) Mod 

func (c *Emitter) Mod(swapped bool)

Mod emits code for the modulus operator.

func (*Emitter) Mul 

func (c *Emitter) Mul()

Mul emits for code for the multiplication operator.

func (*Emitter) Name 

func (c *Emitter) Name(name string)

Name emits a code label for name.

func (*Emitter) Neg 

func (c *Emitter) Neg()

Neg emits code for switching a sign.

func (*Emitter) Ngen 

func (c *Emitter) Ngen(s string, args ...interface{})

Ngen emits a line of assembly with instruction and one or zero argument.

func (*Emitter) Ngen2 

func (c *Emitter) Ngen2(s, inst string, n, a int)

Ngen2 emits a line of assembly with instruction and two arguments.

func (*Emitter) Not 

func (c *Emitter) Not()

Not emits code for a negation.

func (*Emitter) Or 

func (c *Emitter) Or()

Or emits code for the bitwise or operator.

func (*Emitter) Pointer 

func (c *Emitter) Pointer() int

Pointer returns the size of a pointer.

func (*Emitter) Postlude 

func (c *Emitter) Postlude()

Postlude emits code for the postlude.

func (*Emitter) Prelude 

func (c *Emitter) Prelude()

Prelude emits code for the prelude.

func (*Emitter) Public 

func (c *Emitter) Public(name string)

Public emits code for defining a global symbol, used for global identifiers.

func (*Emitter) Push 

func (c *Emitter) Push()

Push emits code for pushing to the stack after flushing the code synthesizer.

func (*Emitter) PushLit 

func (c *Emitter) PushLit(n int)

PushLit pushes a literal to the stack after flushing the code synthesizer.

func (*Emitter) Queue 

func (c *Emitter) Queue(typ, value int, name string)

Queue queues a value into the code synthesizer.

func (*Emitter) QueueBool 

func (c *Emitter) QueueBool(op int)

QueueBool queues a boolean operation.

func (*Emitter) QueueCmp 

func (c *Emitter) QueueCmp(op int)

QueueCmp queues a comparison operator.

func (*Emitter) Raw 

func (c *Emitter) Raw(s string)

Raw emits raw text.

func (*Emitter) Rval 

func (c *Emitter) Rval(lv LV)

Rval emits code to load an address.

func (*Emitter) Scale 

func (c *Emitter) Scale()

Scale emits code to scale indices for pointer arithmetic and array accesses.

func (*Emitter) ScaleBy 

func (c *Emitter) ScaleBy(v int)

ScaleBy emits code to scale the indices.

func (*Emitter) Sgen 

func (c *Emitter) Sgen(s, inst, s2 string)

Sgen emits a prefix and instruction with one argument.

func (*Emitter) Sgen2 

func (c *Emitter) Sgen2(s, inst string, v int, s2 string)

Sgen2 emits a prefix and instruction with two arguments.

func (*Emitter) Shl 

func (c *Emitter) Shl(swapped bool)

Shl emits code for left shifting.

func (*Emitter) Shr 

func (c *Emitter) Shr(swapped bool)

Shr emits code for right shifting.

func (*Emitter) Sizeof 

func (c *Emitter) Sizeof(T types.Type) int

Sizeof returns the sizze of a type.

func (*Emitter) Spill 

func (c *Emitter) Spill()

Spill pushes the registers in use onto the stack.

func (*Emitter) Stack 

func (c *Emitter) Stack(n int)

Stack emits a stack grows if n is not zero.

func (*Emitter) Store 

func (c *Emitter) Store(lv LV)

Store emits code to store a value.

func (*Emitter) Sub 

func (c *Emitter) Sub(p1, p2 types.Type, swapped bool) types.Type

Sub emits code for subtraction.

func (*Emitter) Switch 

func (c *Emitter) Switch(vals, labs []int, dflt int)

Switch emits code for a switch statement.

func (*Emitter) Text 

func (c *Emitter) Text()

Text emits code to switch to the text segment.

func (*Emitter) Xor 

func (c *Emitter) Xor()

Xor emits code for the bitwise xor operator.

type LV 

type LV struct {
	Ident       bool           // if the variable is an identifier
	Addressable bool           // if the variable is addressable
	Storage     types.Storage  // the storage type of the variable
	Type        types.Type     // type of the variable
	Btype       types.Type     // for binary expressions where it can implicitly cast the result  such as pointer - pointer becomes an integer
	Name        string         // name of the variable if any
	Size        int            // size of the variable, for sizeof
	Addr        int            // the location of the variable, such as the offset of where it is on the stack
	Value       constant.Value // if the variable is a constant, the constant will be stored here
}

LV is a structure that an emitter uses as arguments to generate code, it mainly contains data structure for variables and their resulting types after an expression has been done on them.

Source Files

View all Source files

Directories

Path Synopsis
Package amd64 contains a code emitter for generating code for the x86_64 architecture.
 Package amd64 contains a code emitter for generating code for the x86_64 architecture.
Package arm6 contains a code emitter to generate code for the ARMv6 architecture.
 Package arm6 contains a code emitter to generate code for the ARMv6 architecture.
Package darwinamd64 contains code to generate a x86_64 architecture that is running on darwin.
 Package darwinamd64 contains code to generate a x86_64 architecture that is running on darwin.
Package i386 contains code to generate code for the x86 architecture.
 Package i386 contains code to generate code for the x86 architecture.

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