#define SECTION_CUSTOM   0
#define SECTION_TYPE     1
#define SECTION_IMPORT   2
#define SECTION_FUNCTION 3
#define SECTION_TABLE    4
#define SECTION_MEMORY   5
#define SECTION_GLOBAL   6
#define SECTION_EXPORT   7
#define SECTION_START    8
#define SECTION_ELEMENT  9
#define SECTION_CODE     10
#define SECTION_DATA     11

#define VALTYPE_I32 0x7F
#define VALTYPE_I64 0x7E
#define VALTYPE_F32 0x7D
#define VALTYPE_F64 0x7C

#define EXPORT_FUNCIDX   0x00
#define EXPORT_TABLEIDX  0x01
#define EXPORT_MEMIDX    0x02
#define EXPORT_GLOBALIDX 0x03