mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-05 13:16:32 +00:00
[OCaml] Rework Llvm_executionengine using ctypes.
Since JIT->MCJIT migration, most of the ExecutionEngine interface became deprecated and/or broken. This especially affected the OCaml bindings, as runFunction is no longer available, and unlike in C, it is not possible to coerce a pointer to a function and call it in OCaml. In practice, LLVM 3.5 shipped completely unusable Llvm_executionengine. The GenericValue interface and runFunction were essentially a poor man's FFI. As such, this interface was removed and instead a dependency on ctypes >=0.3 added, which handled platform-specific aspects of accessing data and calling functions. The new interface does not expose JIT (which is a shim around MCJIT), as well as the interpreter (which can't handle a lot of valid IR). Llvm_executionengine.add_global_mapping is currently unusable due to PR20656. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220957 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Peter Zotov
@@ -27,118 +27,8 @@
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void llvm_raise(value Prototype, char *Message);
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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 *) "Llvm_executionengine.GenericValue.t",
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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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custom_compare_ext_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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/* unit -> bool */
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CAMLprim value llvm_initialize_native_target(value Unit) {
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LLVMLinkInInterpreter();
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CAMLprim value llvm_ee_initialize(value Unit) {
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LLVMLinkInMCJIT();
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return Val_bool(!LLVMInitializeNativeTarget() &&
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@@ -146,48 +36,22 @@ CAMLprim value llvm_initialize_native_target(value Unit) {
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!LLVMInitializeNativeAsmPrinter());
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}
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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(*caml_named_value("Llvm_executionengine.Error"), 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(*caml_named_value("Llvm_executionengine.Error"), 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(*caml_named_value("Llvm_executionengine.Error"), Error);
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return JIT;
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}
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/* llmodule -> llcompileroption -> ExecutionEngine.t */
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CAMLprim LLVMExecutionEngineRef
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llvm_ee_create_mcjit(LLVMModuleRef M, value OptRecord) {
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CAMLprim LLVMExecutionEngineRef llvm_ee_create(value OptRecordOpt, LLVMModuleRef M) {
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value OptRecord;
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LLVMExecutionEngineRef MCJIT;
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char *Error;
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struct LLVMMCJITCompilerOptions Options;
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LLVMInitializeMCJITCompilerOptions(&Options, sizeof(Options));
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Options.OptLevel = Int_val(Field(OptRecord, 0));
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Options.CodeModel = Int_val(Field(OptRecord, 1));
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Options.NoFramePointerElim = Int_val(Field(OptRecord, 2));
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Options.EnableFastISel = Int_val(Field(OptRecord, 3));
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Options.MCJMM = NULL;
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if (OptRecordOpt != Val_int(0)) {
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OptRecord = Field(OptRecordOpt, 0);
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Options.OptLevel = Int_val(Field(OptRecord, 0));
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Options.CodeModel = Int_val(Field(OptRecord, 1));
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Options.NoFramePointerElim = Int_val(Field(OptRecord, 2));
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Options.EnableFastISel = Int_val(Field(OptRecord, 3));
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Options.MCJMM = NULL;
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}
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if (LLVMCreateMCJITCompilerForModule(&MCJIT, M, &Options,
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sizeof(Options), &Error))
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@@ -208,43 +72,12 @@ CAMLprim value llvm_ee_add_module(LLVMModuleRef M, LLVMExecutionEngineRef EE) {
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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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CAMLprim value llvm_ee_remove_module(LLVMModuleRef M, 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(*caml_named_value("Llvm_executionengine.Error"), 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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return Val_unit;
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}
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/* ExecutionEngine.t -> unit */
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@@ -259,66 +92,6 @@ CAMLprim value llvm_ee_run_static_dtors(LLVMExecutionEngineRef 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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extern value llvm_alloc_data_layout(LLVMTargetDataRef TargetData);
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/* ExecutionEngine.t -> Llvm_target.DataLayout.t */
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@@ -334,3 +107,16 @@ CAMLprim value llvm_ee_get_data_layout(LLVMExecutionEngineRef EE) {
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return DataLayout;
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}
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/* Llvm.llvalue -> int64 -> llexecutionengine -> unit */
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CAMLprim value llvm_ee_add_global_mapping(LLVMValueRef Global, value Ptr,
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LLVMExecutionEngineRef EE) {
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LLVMAddGlobalMapping(EE, Global, (void*) (Int64_val(Ptr)));
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return Val_unit;
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}
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/* Llvm.llvalue -> llexecutionengine -> int64 */
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CAMLprim value llvm_ee_get_pointer_to_global(LLVMValueRef Global,
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LLVMExecutionEngineRef EE) {
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return caml_copy_int64((int64_t) LLVMGetPointerToGlobal(EE, Global));
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}
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