105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
/*
|
|
* Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package gossa
|
|
|
|
import (
|
|
"go/constant"
|
|
"go/types"
|
|
"io"
|
|
"os"
|
|
|
|
"github.com/goplus/llvm"
|
|
"golang.org/x/tools/go/types/typeutil"
|
|
)
|
|
|
|
// A Program is a partial or complete Go program converted to SSA form.
|
|
type Program struct {
|
|
ctx llvm.Context
|
|
typs typeutil.Map
|
|
td llvm.TargetData
|
|
|
|
intType llvm.Type
|
|
int8Type llvm.Type
|
|
int16Type llvm.Type
|
|
int32Type llvm.Type
|
|
int64Type llvm.Type
|
|
}
|
|
|
|
func NewProgram(targetRep string) *Program {
|
|
ctx := llvm.NewContext()
|
|
ctx.Finalize()
|
|
td := llvm.NewTargetData(targetRep)
|
|
return &Program{ctx: ctx, td: td}
|
|
}
|
|
|
|
func (p *Program) NewPackage(name, pkgPath string) *Package {
|
|
mod := p.ctx.NewModule(pkgPath)
|
|
mod.Finalize()
|
|
return &Package{mod, p}
|
|
}
|
|
|
|
// A Package is a single analyzed Go package containing Members for
|
|
// all package-level functions, variables, constants and types it
|
|
// declares. These may be accessed directly via Members, or via the
|
|
// type-specific accessor methods Func, Type, Var and Const.
|
|
//
|
|
// Members also contains entries for "init" (the synthetic package
|
|
// initializer) and "init#%d", the nth declared init function,
|
|
// and unspecified other things too.
|
|
type Package struct {
|
|
mod llvm.Module
|
|
prog *Program
|
|
}
|
|
|
|
func (p *Package) NewConst(name string, val constant.Value) *NamedConst {
|
|
return &NamedConst{}
|
|
}
|
|
|
|
func (p *Package) NewType(name string, typ types.Type) *Type {
|
|
return &Type{}
|
|
}
|
|
|
|
func (p *Package) NewVar(name string, typ types.Type) *Global {
|
|
gbl := llvm.AddGlobal(p.mod, p.prog.llvmType(typ), name)
|
|
return &Global{gbl}
|
|
}
|
|
|
|
func (p *Package) NewFunc(name string, sig *types.Signature) *Function {
|
|
return &Function{}
|
|
}
|
|
|
|
func (p *Package) Bytes() []byte {
|
|
buf := llvm.WriteBitcodeToMemoryBuffer(p.mod)
|
|
ret := buf.Bytes()
|
|
buf.Dispose()
|
|
return ret
|
|
}
|
|
|
|
func (p *Package) WriteTo(w io.Writer) (int64, error) {
|
|
n, err := w.Write(p.Bytes())
|
|
return int64(n), err
|
|
}
|
|
|
|
func (p *Package) WriteFile(file string) (err error) {
|
|
f, err := os.Create(file)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer f.Close()
|
|
return llvm.WriteBitcodeToFile(p.mod, f)
|
|
}
|