package elf

// SectionHeaderSize is equal to the size of a section header in bytes.
const SectionHeaderSize = 64

// SectionHeader points to the data sections of our program.
type SectionHeader struct {
	NameIndex      int32
	Type           SectionType
	Flags          SectionFlags
	VirtualAddress int64
	Offset         int64
	SizeInFile     int64
	Link           int32
	Info           int32
	Align          int64
	EntrySize      int64
}

type SectionType int32

const (
	SectionTypeNULL     SectionType = 0
	SectionTypePROGBITS SectionType = 1
	SectionTypeSYMTAB   SectionType = 2
	SectionTypeSTRTAB   SectionType = 3
	SectionTypeRELA     SectionType = 4
	SectionTypeHASH     SectionType = 5
	SectionTypeDYNAMIC  SectionType = 6
	SectionTypeNOTE     SectionType = 7
	SectionTypeNOBITS   SectionType = 8
	SectionTypeREL      SectionType = 9
	SectionTypeSHLIB    SectionType = 10
	SectionTypeDYNSYM   SectionType = 11
)

type SectionFlags int64

const (
	SectionFlagsWritable   SectionFlags = 1 << 0
	SectionFlagsAllocate   SectionFlags = 1 << 1
	SectionFlagsExecutable SectionFlags = 1 << 2
	SectionFlagsStrings    SectionFlags = 1 << 5
	SectionFlagsTLS        SectionFlags = 1 << 10
)