Add E_MACHINE_RISCV to aot loader

Signed-off-by: Huang Qi <[email protected]>

Author: no1wudi

core/iwasm/aot/aot_loader.c

@@ -182,6 +182,7 @@ GET_U64_FROM_ADDR(uint32 *addr)
 #define E_MACHINE_MIPS_X   51       /* Stanford MIPS-X */
 #define E_MACHINE_X86_64   62       /* AMD x86-64 architecture */
 #define E_MACHINE_XTENSA   94       /* Tensilica Xtensa Architecture */
+#define E_MACHINE_RISCV    243      /* RISC-V 32/64 */
 #define E_MACHINE_WIN_X86_64 0x8664 /* Windowx x86-64 architecture */
 
 /* Legal values for e_version */
@@ -257,6 +258,9 @@ get_aot_file_target(AOTTargetInfo *target_info,
         case E_MACHINE_XTENSA:
             machine_type = "xtensa";
             break;
+        case E_MACHINE_RISCV:
+            machine_type = "riscv";
+            break;
         default:
             set_error_buf_v(error_buf, error_buf_size,
                             "unknown machine type %d",