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