Function TestFindProgHeaderForMapping

internal/elfexec/elfexec_test.go:120–411

(t *testing.T)

}

func TestFindProgHeaderForMapping(t *testing.T) {
	buildList := func(headers []*elf.ProgHeader) (result string) {
		builder := strings.Builder{}
		if err := builder.WriteByte('['); err != nil {
			t.Error("Failed to append '[' to the builder")
		}
		defer func() {
			if err := builder.WriteByte(']'); err != nil {
				t.Error("Failed to append ']' to the builder")
			}
			result = builder.String()
		}()
		if len(headers) == 0 {
			if _, err := builder.WriteString("nil"); err != nil {
				t.Error("Failed to append 'nil' to the builder")
			}
			return
		}
		if _, err := builder.WriteString(fmt.Sprintf("%#v", *headers[0])); err != nil {
			t.Error("Failed to append first header to the builder")
		}
		for i, h := range headers[1:] {
			if _, err := builder.WriteString(fmt.Sprintf(", %#v", *h)); err != nil {
				t.Errorf("Failed to append header %d to the builder", i+1)
			}
		}
		return
	}

	// Various ELF program headers for unit tests.
	tinyHeaders := []elf.ProgHeader{
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_X, Off: 0, Vaddr: 0, Paddr: 0, Filesz: 0xc80, Memsz: 0xc80, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0xc80, Vaddr: 0x200c80, Paddr: 0x200c80, Filesz: 0x1f0, Memsz: 0x1f0, Align: 0x200000},
	}
	tinyBadBSSHeaders := []elf.ProgHeader{
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_X, Off: 0, Vaddr: 0, Paddr: 0, Filesz: 0xc80, Memsz: 0xc80, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0xc80, Vaddr: 0x200c80, Paddr: 0x200c80, Filesz: 0x100, Memsz: 0x1f0, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0xd80, Vaddr: 0x400d80, Paddr: 0x400d80, Filesz: 0x90, Memsz: 0x90, Align: 0x200000},
	}
	smallHeaders := []elf.ProgHeader{
		{Type: elf.PT_PHDR, Flags: elf.PF_R | elf.PF_X, Off: 0x40, Vaddr: 0x400040, Paddr: 0x400040, Filesz: 0x1f8, Memsz: 0x1f8, Align: 8},
		{Type: elf.PT_INTERP, Flags: elf.PF_R, Off: 0x238, Vaddr: 0x400238, Paddr: 0x400238, Filesz: 0x1c, Memsz: 0x1c, Align: 1},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_X, Off: 0, Vaddr: 0x400000, Paddr: 0x400000, Filesz: 0x6fc, Memsz: 0x6fc, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0xe10, Vaddr: 0x600e10, Paddr: 0x600e10, Filesz: 0x230, Memsz: 0x238, Align: 0x200000},
		{Type: elf.PT_DYNAMIC, Flags: elf.PF_R | elf.PF_W, Off: 0xe28, Vaddr: 0x600e28, Paddr: 0x600e28, Filesz: 0x1d0, Memsz: 0x1d0, Align: 8},
	}
	smallBadBSSHeaders := []elf.ProgHeader{
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_X, Off: 0, Vaddr: 0x200000, Paddr: 0x200000, Filesz: 0x6fc, Memsz: 0x6fc, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0x700, Vaddr: 0x400700, Paddr: 0x400700, Filesz: 0x500, Memsz: 0x710, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0xe10, Vaddr: 0x600e10, Paddr: 0x600e10, Filesz: 0x230, Memsz: 0x238, Align: 0x200000},
	}
	mediumHeaders := []elf.ProgHeader{
		{Type: elf.PT_PHDR, Flags: elf.PF_R, Off: 0x40, Vaddr: 0x40, Paddr: 0x40, Filesz: 0x2d8, Memsz: 0x2d8, Align: 8},
		{Type: elf.PT_INTERP, Flags: elf.PF_R, Off: 0x318, Vaddr: 0x318, Paddr: 0x318, Filesz: 0x28, Memsz: 0x28, Align: 1},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_X, Off: 0, Vaddr: 0, Paddr: 0, Filesz: 0x354ca0, Memsz: 0x354ca0, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0x400000, Vaddr: 600000, Paddr: 600000, Filesz: 0x0083b8, Memsz: 0x009000, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R | elf.PF_W, Off: 0x600000, Vaddr: 0xa00000, Paddr: 0xa00000, Filesz: 0x007030, Memsz: 0x9cf090, Align: 0x200000},
		{Type: elf.PT_LOAD, Flags: elf.PF_R, Off: 0x7cf090, Vaddr: 0x15cf090, Paddr: 0x15cf090, Filesz: 0x028460, Memsz: 0x028460, Align: 0x200000},