arch/sim: add arch elf define

Signed-off-by: chao.an <anchao@xiaomi.com>

arch/sim/include/elf.h

@@ -0,0 +1,52 @@
+/****************************************************************************
+ * arch/sim/include/elf.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_SIM_INCLUDE_ELF_H
+#define __ARCH_SIM_INCLUDE_ELF_H
+
+/****************************************************************************
+ * Pre-processor Prototypes
+ ****************************************************************************/
+
+/* 4.3.1 ELF Identification.  Should have:
+ *
+ * e_machine         = EM_386
+ * e_ident[EI_CLASS] = ELFCLASS32
+ * e_ident[EI_DATA]  = ELFDATA2LSB (little endian) or
+ *                     ELFDATA2MSB (big endian)
+ */
+
+#ifdef CONFIG_SIM_M32
+#  define EM_ARCH                EM_386
+#  define ELF_CLASS              ELFCLASS32
+#else
+#  define EM_ARCH                EM_X86_64
+#  define ELF_CLASS              ELFCLASS32
+#endif
+
+#ifdef CONFIG_ENDIAN_BIG
+#  define ELF_DATA               ELFDATA2MSB
+#else
+#  define ELF_DATA               ELFDATA2LSB
+#endif
+
+#define EF_FLAG                  0
+
+#endif /* __ARCH_SIM_INCLUDE_ELF_H */