CMPQ CX, $8
	JL less_than_8

	MOVQ SI, BX
	ANDQ $7, BX
	JZ aligned

	// Process the first few bytes to 8-byte align the input.

	// BX = 8 - BX. We need to process this many bytes to align.
	SUBQ $1, BX
	XORQ $7, BX

	BTQ $0, BX
	JNC align_2

	CRC32B (SI), AX
	DECQ CX
	INCQ SI

align_2:
	BTQ $1, BX
	JNC align_4

	CRC32W (SI), AX

	SUBQ $2, CX
	ADDQ $2, SI

align_4:

		// this comment should be indented
	case 2:
		x = 0
	// this comment should not be indented, it is aligned with the next case
	case 3:
		x = 0
		/* indented comment
		   aligned
		   aligned
		*/
		// bla
		/* and more */
	case 4:
		x = 0
	/* not indented comment
	   aligned
	   aligned
	*/
	// bla
	/* and more */
	case 5:
	}
}

		// this comment should be indented
	case 2:
		x = 0
	// this comment should not be indented, it is aligned with the next case
	case 3:
		x = 0
		/* indented comment
		   aligned
		   aligned
		*/
		// bla
		/* and more */
	case 4:
		x = 0
	/* not indented comment
	   aligned
	   aligned
	*/
	// bla
	/* and more */
	case 5:
	}
}

//     field's size. As with all element types, if the struct is used
//     in an array its size must first be aligned to a multiple of the
//     struct's alignment.
//   - All other types have size WordSize.
//   - Arrays and structs are aligned per spec definition; all other
//     types are naturally aligned with a maximum alignment MaxAlign.
//
// *StdSizes implements Sizes.
type StdSizes struct {

//     field's size. As with all element types, if the struct is used
//     in an array its size must first be aligned to a multiple of the
//     struct's alignment.
//   - All other types have size WordSize.
//   - Arrays and structs are aligned per spec definition; all other
//     types are naturally aligned with a maximum alignment MaxAlign.
//
// *StdSizes implements Sizes.
type StdSizes struct {

// on entry to any function, but only FreeBSD's C library seems to care.
// The caller was 8-byte aligned, but we push an LR.
// Declare a dummy word ($4, not $0) to make sure the
// frame is 8 bytes and stays 8-byte-aligned.
TEXT runtime·_initcgo(SB),NOSPLIT,$4
	// if there is an _cgo_init, call it.
	MOVW	_cgo_init(SB), R4
	CMP	$0, R4
	B.EQ	nocgo
	MRC     15, 0, R0, C13, C0, 3 	// load TLS base pointer

	}
}

func TestPhysPageSize(t *testing.T) {
	// Mmap fails if the address is not page aligned, so we can
	// use this to test if the page size is the true page size.
	ps := runtime.GetPhysPageSize()

	// Get a region of memory to play with. This should be page-aligned.
	b, err := runtime.Mmap(nil, 2*ps, 0, runtime.MAP_ANON|runtime.MAP_PRIVATE, -1, 0)
	if err != 0 {
		t.Fatalf("Mmap: %v", err)
	}

			// type the selector arg on some platforms.
			return
		}
		if p, ok := t.(*types.Pointer); ok {
			// Note: we assume here that the pointer p in p.foo is properly
			// aligned. We just check that foo is at a properly aligned offset.
			t = p.Elem()
		} else {
			v.checkAddr(n.X)
		}
		if t.Underlying() == t {
			v.t.Errorf("analysis can't handle unnamed type %s %v", v.fset.Position(n.Pos()), t)
		}

	//
	// The base address of the backing store is always page-aligned,
	// because it comes from the OS, so it's sufficient to align the
	// index.
	haveMin := s.min.Load()
	haveMax := s.max.Load()
	needMin := alignDown(uintptr(chunkIndex(base)), physPageSize/scSize)
	needMax := alignUp(uintptr(chunkIndex(limit)), physPageSize/scSize)

	MOVD	R8, 0(R2)
	RET
notfoundr0:
	XOR	R0, R0          // reset R0
	MOVD	$-1, 0(R2)
	RET

vectorimpl:
	//if the address is not 16byte aligned, use loop for the header
	MOVD	R3, R8
	AND	$15, R8
	CMPBGT	R8, $0, notaligned

aligned:
	ADD	R6, R4, R8
	MOVD	R8, R7
	AND	$-16, R7
	// replicate c across V17
	VLVGB	$0, R5, V19
	VREPB	$0, V19, V17

vectorloop:
	CMPBGE	R3, R7, residual