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324 lines
10 KiB
C
324 lines
10 KiB
C
/*===-- executionengine_ocaml.c - LLVM Ocaml Glue ---------------*- C++ -*-===*\
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|* *|
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|* The LLVM Compiler Infrastructure *|
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|* *|
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|* This file is distributed under the University of Illinois Open Source *|
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|* License. See LICENSE.TXT for details. *|
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|* *|
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|*===----------------------------------------------------------------------===*|
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|* *|
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|* This file glues LLVM's ocaml interface to its C interface. These functions *|
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|* are by and large transparent wrappers to the corresponding C functions. *|
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|* *|
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|* Note that these functions intentionally take liberties with the CAMLparamX *|
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|* macros, since most of the parameters are not GC heap objects. *|
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|* *|
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\*===----------------------------------------------------------------------===*/
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#include "llvm-c/ExecutionEngine.h"
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#include "llvm-c/Target.h"
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#include "caml/alloc.h"
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#include "caml/custom.h"
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#include "caml/fail.h"
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#include "caml/memory.h"
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#include <string.h>
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#include <assert.h>
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/* Force the LLVM interpreter and JIT to be linked in. */
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void llvm_initialize(void) {
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LLVMLinkInInterpreter();
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LLVMLinkInJIT();
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}
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/* unit -> bool */
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CAMLprim value llvm_initialize_native_target(value Unit) {
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return Val_bool(LLVMInitializeNativeTarget());
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}
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/* Can't use the recommended caml_named_value mechanism for backwards
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compatibility reasons. This is largely equivalent. */
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static value llvm_ee_error_exn;
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CAMLprim value llvm_register_ee_exns(value Error) {
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llvm_ee_error_exn = Field(Error, 0);
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register_global_root(&llvm_ee_error_exn);
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return Val_unit;
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}
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static void llvm_raise(value Prototype, char *Message) {
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CAMLparam1(Prototype);
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CAMLlocal1(CamlMessage);
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CamlMessage = copy_string(Message);
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LLVMDisposeMessage(Message);
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raise_with_arg(Prototype, CamlMessage);
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abort(); /* NOTREACHED */
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#ifdef CAMLnoreturn
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CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
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#endif
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}
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/*--... Operations on generic values .......................................--*/
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#define Genericvalue_val(v) (*(LLVMGenericValueRef *)(Data_custom_val(v)))
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static void llvm_finalize_generic_value(value GenVal) {
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LLVMDisposeGenericValue(Genericvalue_val(GenVal));
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}
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static struct custom_operations generic_value_ops = {
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(char *) "LLVMGenericValue",
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llvm_finalize_generic_value,
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custom_compare_default,
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custom_hash_default,
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custom_serialize_default,
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custom_deserialize_default
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};
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static value alloc_generic_value(LLVMGenericValueRef Ref) {
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value Val = alloc_custom(&generic_value_ops, sizeof(LLVMGenericValueRef), 0, 1);
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Genericvalue_val(Val) = Ref;
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return Val;
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}
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/* Llvm.lltype -> float -> t */
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CAMLprim value llvm_genericvalue_of_float(LLVMTypeRef Ty, value N) {
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CAMLparam1(N);
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CAMLreturn(alloc_generic_value(
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LLVMCreateGenericValueOfFloat(Ty, Double_val(N))));
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}
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/* 'a -> t */
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CAMLprim value llvm_genericvalue_of_pointer(value V) {
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CAMLparam1(V);
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CAMLreturn(alloc_generic_value(LLVMCreateGenericValueOfPointer(Op_val(V))));
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}
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/* Llvm.lltype -> int -> t */
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CAMLprim value llvm_genericvalue_of_int(LLVMTypeRef Ty, value Int) {
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return alloc_generic_value(LLVMCreateGenericValueOfInt(Ty, Int_val(Int), 1));
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}
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/* Llvm.lltype -> int32 -> t */
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CAMLprim value llvm_genericvalue_of_int32(LLVMTypeRef Ty, value Int32) {
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CAMLparam1(Int32);
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CAMLreturn(alloc_generic_value(
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LLVMCreateGenericValueOfInt(Ty, Int32_val(Int32), 1)));
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}
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/* Llvm.lltype -> nativeint -> t */
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CAMLprim value llvm_genericvalue_of_nativeint(LLVMTypeRef Ty, value NatInt) {
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CAMLparam1(NatInt);
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CAMLreturn(alloc_generic_value(
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LLVMCreateGenericValueOfInt(Ty, Nativeint_val(NatInt), 1)));
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}
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/* Llvm.lltype -> int64 -> t */
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CAMLprim value llvm_genericvalue_of_int64(LLVMTypeRef Ty, value Int64) {
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CAMLparam1(Int64);
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CAMLreturn(alloc_generic_value(
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LLVMCreateGenericValueOfInt(Ty, Int64_val(Int64), 1)));
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}
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/* Llvm.lltype -> t -> float */
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CAMLprim value llvm_genericvalue_as_float(LLVMTypeRef Ty, value GenVal) {
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CAMLparam1(GenVal);
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CAMLreturn(copy_double(
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LLVMGenericValueToFloat(Ty, Genericvalue_val(GenVal))));
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}
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/* t -> 'a */
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CAMLprim value llvm_genericvalue_as_pointer(value GenVal) {
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return Val_op(LLVMGenericValueToPointer(Genericvalue_val(GenVal)));
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}
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/* t -> int */
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CAMLprim value llvm_genericvalue_as_int(value GenVal) {
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assert(LLVMGenericValueIntWidth(Genericvalue_val(GenVal)) <= 8 * sizeof(value)
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&& "Generic value too wide to treat as an int!");
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return Val_int(LLVMGenericValueToInt(Genericvalue_val(GenVal), 1));
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}
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/* t -> int32 */
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CAMLprim value llvm_genericvalue_as_int32(value GenVal) {
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CAMLparam1(GenVal);
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assert(LLVMGenericValueIntWidth(Genericvalue_val(GenVal)) <= 32
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&& "Generic value too wide to treat as an int32!");
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CAMLreturn(copy_int32(LLVMGenericValueToInt(Genericvalue_val(GenVal), 1)));
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}
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/* t -> int64 */
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CAMLprim value llvm_genericvalue_as_int64(value GenVal) {
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CAMLparam1(GenVal);
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assert(LLVMGenericValueIntWidth(Genericvalue_val(GenVal)) <= 64
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&& "Generic value too wide to treat as an int64!");
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CAMLreturn(copy_int64(LLVMGenericValueToInt(Genericvalue_val(GenVal), 1)));
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}
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/* t -> nativeint */
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CAMLprim value llvm_genericvalue_as_nativeint(value GenVal) {
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CAMLparam1(GenVal);
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assert(LLVMGenericValueIntWidth(Genericvalue_val(GenVal)) <= 8 * sizeof(value)
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&& "Generic value too wide to treat as a nativeint!");
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CAMLreturn(copy_nativeint(LLVMGenericValueToInt(Genericvalue_val(GenVal),1)));
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}
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/*--... Operations on execution engines ....................................--*/
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/* llmodule -> ExecutionEngine.t */
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CAMLprim LLVMExecutionEngineRef llvm_ee_create(LLVMModuleRef M) {
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LLVMExecutionEngineRef Interp;
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char *Error;
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if (LLVMCreateExecutionEngineForModule(&Interp, M, &Error))
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llvm_raise(llvm_ee_error_exn, Error);
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return Interp;
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}
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/* llmodule -> ExecutionEngine.t */
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CAMLprim LLVMExecutionEngineRef
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llvm_ee_create_interpreter(LLVMModuleRef M) {
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LLVMExecutionEngineRef Interp;
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char *Error;
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if (LLVMCreateInterpreterForModule(&Interp, M, &Error))
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llvm_raise(llvm_ee_error_exn, Error);
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return Interp;
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}
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/* llmodule -> int -> ExecutionEngine.t */
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CAMLprim LLVMExecutionEngineRef
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llvm_ee_create_jit(LLVMModuleRef M, value OptLevel) {
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LLVMExecutionEngineRef JIT;
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char *Error;
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if (LLVMCreateJITCompilerForModule(&JIT, M, Int_val(OptLevel), &Error))
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llvm_raise(llvm_ee_error_exn, Error);
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return JIT;
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}
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/* ExecutionEngine.t -> unit */
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CAMLprim value llvm_ee_dispose(LLVMExecutionEngineRef EE) {
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LLVMDisposeExecutionEngine(EE);
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return Val_unit;
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}
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/* llmodule -> ExecutionEngine.t -> unit */
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CAMLprim value llvm_ee_add_module(LLVMModuleRef M, LLVMExecutionEngineRef EE) {
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LLVMAddModule(EE, M);
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return Val_unit;
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}
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/* llmodule -> ExecutionEngine.t -> llmodule */
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CAMLprim LLVMModuleRef llvm_ee_remove_module(LLVMModuleRef M,
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LLVMExecutionEngineRef EE) {
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LLVMModuleRef RemovedModule;
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char *Error;
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if (LLVMRemoveModule(EE, M, &RemovedModule, &Error))
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llvm_raise(llvm_ee_error_exn, Error);
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return RemovedModule;
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}
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/* string -> ExecutionEngine.t -> llvalue option */
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CAMLprim value llvm_ee_find_function(value Name, LLVMExecutionEngineRef EE) {
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CAMLparam1(Name);
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CAMLlocal1(Option);
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LLVMValueRef Found;
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if (LLVMFindFunction(EE, String_val(Name), &Found))
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CAMLreturn(Val_unit);
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Option = alloc(1, 0);
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Field(Option, 0) = Val_op(Found);
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CAMLreturn(Option);
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}
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/* llvalue -> GenericValue.t array -> ExecutionEngine.t -> GenericValue.t */
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CAMLprim value llvm_ee_run_function(LLVMValueRef F, value Args,
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LLVMExecutionEngineRef EE) {
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unsigned NumArgs;
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LLVMGenericValueRef Result, *GVArgs;
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unsigned I;
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NumArgs = Wosize_val(Args);
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GVArgs = (LLVMGenericValueRef*) malloc(NumArgs * sizeof(LLVMGenericValueRef));
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for (I = 0; I != NumArgs; ++I)
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GVArgs[I] = Genericvalue_val(Field(Args, I));
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Result = LLVMRunFunction(EE, F, NumArgs, GVArgs);
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free(GVArgs);
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return alloc_generic_value(Result);
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}
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/* ExecutionEngine.t -> unit */
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CAMLprim value llvm_ee_run_static_ctors(LLVMExecutionEngineRef EE) {
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LLVMRunStaticConstructors(EE);
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return Val_unit;
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}
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/* ExecutionEngine.t -> unit */
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CAMLprim value llvm_ee_run_static_dtors(LLVMExecutionEngineRef EE) {
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LLVMRunStaticDestructors(EE);
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return Val_unit;
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}
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/* llvalue -> string array -> (string * string) array -> ExecutionEngine.t ->
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int */
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CAMLprim value llvm_ee_run_function_as_main(LLVMValueRef F,
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value Args, value Env,
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LLVMExecutionEngineRef EE) {
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CAMLparam2(Args, Env);
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int I, NumArgs, NumEnv, EnvSize, Result;
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const char **CArgs, **CEnv;
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char *CEnvBuf, *Pos;
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NumArgs = Wosize_val(Args);
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NumEnv = Wosize_val(Env);
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/* Build the environment. */
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CArgs = (const char **) malloc(NumArgs * sizeof(char*));
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for (I = 0; I != NumArgs; ++I)
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CArgs[I] = String_val(Field(Args, I));
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/* Compute the size of the environment string buffer. */
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for (I = 0, EnvSize = 0; I != NumEnv; ++I) {
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EnvSize += strlen(String_val(Field(Field(Env, I), 0))) + 1;
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EnvSize += strlen(String_val(Field(Field(Env, I), 1))) + 1;
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}
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/* Build the environment. */
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CEnv = (const char **) malloc((NumEnv + 1) * sizeof(char*));
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CEnvBuf = (char*) malloc(EnvSize);
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Pos = CEnvBuf;
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for (I = 0; I != NumEnv; ++I) {
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char *Name = String_val(Field(Field(Env, I), 0)),
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*Value = String_val(Field(Field(Env, I), 1));
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int NameLen = strlen(Name),
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ValueLen = strlen(Value);
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CEnv[I] = Pos;
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memcpy(Pos, Name, NameLen);
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Pos += NameLen;
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*Pos++ = '=';
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memcpy(Pos, Value, ValueLen);
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Pos += ValueLen;
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*Pos++ = '\0';
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}
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CEnv[NumEnv] = NULL;
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Result = LLVMRunFunctionAsMain(EE, F, NumArgs, CArgs, CEnv);
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free(CArgs);
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free(CEnv);
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free(CEnvBuf);
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CAMLreturn(Val_int(Result));
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}
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/* llvalue -> ExecutionEngine.t -> unit */
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CAMLprim value llvm_ee_free_machine_code(LLVMValueRef F,
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LLVMExecutionEngineRef EE) {
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LLVMFreeMachineCodeForFunction(EE, F);
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return Val_unit;
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}
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