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//===- executionengine.go - Bindings for executionengine ------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines bindings for the executionengine component.
//
//===----------------------------------------------------------------------===//
package llvm
/*
#include "llvm-c/ExecutionEngine.h"
#include <stdlib.h>
*/
import "C"
import "unsafe"
import "errors"
func LinkInMCJIT() { C.LLVMLinkInMCJIT() }
func LinkInInterpreter() { C.LLVMLinkInInterpreter() }
type GenericValue struct {
C C.LLVMGenericValueRef
}
type ExecutionEngine struct {
C C.LLVMExecutionEngineRef
}
type MCJITCompilerOptions struct {
OptLevel uint
CodeModel CodeModel
NoFramePointerElim bool
EnableFastISel bool
}
// helpers
func llvmGenericValueRefPtr(t *GenericValue) *C.LLVMGenericValueRef {
return (*C.LLVMGenericValueRef)(unsafe.Pointer(t))
}
//-------------------------------------------------------------------------
// llvm.GenericValue
//-------------------------------------------------------------------------
func NewGenericValueFromInt(t Type, n uint64, signed bool) (g GenericValue) {
g.C = C.LLVMCreateGenericValueOfInt(t.C, C.ulonglong(n), boolToLLVMBool(signed))
return
}
func NewGenericValueFromPointer(p unsafe.Pointer) (g GenericValue) {
g.C = C.LLVMCreateGenericValueOfPointer(p)
return
}
func NewGenericValueFromFloat(t Type, n float64) (g GenericValue) {
g.C = C.LLVMCreateGenericValueOfFloat(t.C, C.double(n))
return
}
func (g GenericValue) IntWidth() int { return int(C.LLVMGenericValueIntWidth(g.C)) }
func (g GenericValue) Int(signed bool) uint64 {
return uint64(C.LLVMGenericValueToInt(g.C, boolToLLVMBool(signed)))
}
func (g GenericValue) Float(t Type) float64 {
return float64(C.LLVMGenericValueToFloat(t.C, g.C))
}
func (g GenericValue) Pointer() unsafe.Pointer {
return C.LLVMGenericValueToPointer(g.C)
}
func (g GenericValue) Dispose() { C.LLVMDisposeGenericValue(g.C) }
//-------------------------------------------------------------------------
// llvm.ExecutionEngine
//-------------------------------------------------------------------------
func NewExecutionEngine(m Module) (ee ExecutionEngine, err error) {
var cmsg *C.char
fail := C.LLVMCreateExecutionEngineForModule(&ee.C, m.C, &cmsg)
if fail != 0 {
ee.C = nil
err = errors.New(C.GoString(cmsg))
C.LLVMDisposeMessage(cmsg)
}
return
}
func NewInterpreter(m Module) (ee ExecutionEngine, err error) {
var cmsg *C.char
fail := C.LLVMCreateInterpreterForModule(&ee.C, m.C, &cmsg)
if fail != 0 {
ee.C = nil
err = errors.New(C.GoString(cmsg))
C.LLVMDisposeMessage(cmsg)
}
return
}
func NewMCJITCompiler(m Module, options MCJITCompilerOptions) (ee ExecutionEngine, err error) {
var cmsg *C.char
copts := C.struct_LLVMMCJITCompilerOptions{
OptLevel: C.unsigned(options.OptLevel),
CodeModel: C.LLVMCodeModel(options.CodeModel),
NoFramePointerElim: boolToLLVMBool(options.NoFramePointerElim),
EnableFastISel: boolToLLVMBool(options.EnableFastISel),
}
fail := C.LLVMCreateMCJITCompilerForModule(&ee.C, m.C, &copts, C.size_t(unsafe.Sizeof(copts)), &cmsg)
if fail != 0 {
ee.C = nil
err = errors.New(C.GoString(cmsg))
C.LLVMDisposeMessage(cmsg)
}
return
}
func (ee ExecutionEngine) Dispose() { C.LLVMDisposeExecutionEngine(ee.C) }
func (ee ExecutionEngine) RunStaticConstructors() { C.LLVMRunStaticConstructors(ee.C) }
func (ee ExecutionEngine) RunStaticDestructors() { C.LLVMRunStaticDestructors(ee.C) }
func (ee ExecutionEngine) RunFunction(f Value, args []GenericValue) (g GenericValue) {
nargs := len(args)
var argptr *GenericValue
if nargs > 0 {
argptr = &args[0]
}
g.C = C.LLVMRunFunction(ee.C, f.C,
C.unsigned(nargs), llvmGenericValueRefPtr(argptr))
return
}
func (ee ExecutionEngine) FreeMachineCodeForFunction(f Value) {
C.LLVMFreeMachineCodeForFunction(ee.C, f.C)
}
func (ee ExecutionEngine) AddModule(m Module) { C.LLVMAddModule(ee.C, m.C) }
func (ee ExecutionEngine) RemoveModule(m Module) {
var modtmp C.LLVMModuleRef
C.LLVMRemoveModule(ee.C, m.C, &modtmp, nil)
}
func (ee ExecutionEngine) FindFunction(name string) (f Value) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
C.LLVMFindFunction(ee.C, cname, &f.C)
return
}
func (ee ExecutionEngine) RecompileAndRelinkFunction(f Value) unsafe.Pointer {
return C.LLVMRecompileAndRelinkFunction(ee.C, f.C)
}
func (ee ExecutionEngine) TargetData() (td TargetData) {
td.C = C.LLVMGetExecutionEngineTargetData(ee.C)
return
}
func (ee ExecutionEngine) AddGlobalMapping(global Value, addr unsafe.Pointer) {
C.LLVMAddGlobalMapping(ee.C, global.C, addr)
}
func (ee ExecutionEngine) PointerToGlobal(global Value) unsafe.Pointer {
return C.LLVMGetPointerToGlobal(ee.C, global.C)
}
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