102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
/*
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* Copyright (c) 2023 The GoPlus Authors (goplus.org). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cl
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import (
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"github.com/goplus/llgo/loader"
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"github.com/qiniu/x/errors"
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"golang.org/x/tools/go/ssa"
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llvm "tinygo.org/x/go-llvm"
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)
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type Config struct {
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Triple string
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Target llvm.TargetMachine
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}
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type context struct {
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mod llvm.Module
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ctx llvm.Context
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errs errors.List
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}
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func newContext(moduleName string, conf *Config) *context {
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machine := conf.Target
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targetData := machine.CreateTargetData()
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ctx := llvm.NewContext()
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mod := ctx.NewModule(moduleName)
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mod.SetTarget(conf.Triple)
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mod.SetDataLayout(targetData.String())
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return &context{mod: mod, ctx: ctx}
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}
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func (c *context) dispose() {
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panic("todo")
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}
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func (c *context) loadASTComments(loader.Package) {
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panic("todo")
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}
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// createPackage builds the LLVM IR for all types, methods, and global variables
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// in the given package.
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func (c *context) createPackage(irbuilder llvm.Builder, pkg *ssa.Package) {
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panic("todo")
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}
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func NewPackage(moduleName string, pkg loader.Package, conf *Config) (ret llvm.Module, err error) {
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ssaPkg := pkg.SSA
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ssaPkg.Build()
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c := newContext(moduleName, conf)
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defer c.dispose()
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// Load comments such as //go:extern on globals.
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c.loadASTComments(pkg)
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/* TODO: gc related
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// Predeclare the runtime.alloc function, which is used by the wordpack
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// functionality.
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c.getFunction(c.program.ImportedPackage("runtime").Members["alloc"].(*ssa.Function))
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if c.NeedsStackObjects {
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// Predeclare trackPointer, which is used everywhere we use runtime.alloc.
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c.getFunction(c.program.ImportedPackage("runtime").Members["trackPointer"].(*ssa.Function))
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}
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*/
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// Compile all functions, methods, and global variables in this package.
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irbuilder := c.ctx.NewBuilder()
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defer irbuilder.Dispose()
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c.createPackage(irbuilder, ssaPkg)
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/* TODO: risc-v
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// Add the "target-abi" flag, which is necessary on RISC-V otherwise it will
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// pick one that doesn't match the -mabi Clang flag.
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if c.ABI != "" {
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c.mod.AddNamedMetadataOperand("llvm.module.flags",
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c.ctx.MDNode([]llvm.Metadata{
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llvm.ConstInt(c.ctx.Int32Type(), 1, false).ConstantAsMetadata(), // Error on mismatch
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c.ctx.MDString("target-abi"),
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c.ctx.MDString(c.ABI),
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}),
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)
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}
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*/
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return c.mod, c.errs.ToError()
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}
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