package types

import (
	"reflect"
	"testing"
	"unsafe"
)

// Assert that the size of important structures do not change unexpectedly.

func TestSizeof(t *testing.T) {
	const _64bit = unsafe.Sizeof(uintptr(0)) == 8

	var tests = []struct {
		val    interface{} // type as a value
		_32bit uintptr     // size on 32bit platforms
		_64bit uintptr     // size on 64bit platforms
	}{
		{Sym{}, 32, 64},
		{Type{}, 64, 104},

00000100  cb 3b 74                                          |.;t|
>>> Flow 2 (server to client)
00000000  16 03 01 00 55 02 00 00  51 03 01 9b 6a cd e3 08  |....U...Q...j...|
00000010  29 e7 32 d1 53 14 f5 4a  cf b7 61 1a 90 d6 9a 73  |).2.S..J..a....s|
00000020  ad 48 2a 08 ce d7 d7 cb  f8 25 b1 20 c1 24 61 85  |.H*......%. .$a.|
00000030  31 d2 81 5e 8e c8 31 40  56 36 79 af bb f7 90 d3  |1..^..1@V6y.....|

	MOVW	$0xffff0fa0, R15 // R15 is hardware PC.

TEXT	·Load(SB),NOSPLIT,$0-8
	MOVW	addr+0(FP), R0
	MOVW	(R0), R1

	MOVB	runtime·goarm(SB), R11
	CMP	$7, R11
	BGE	native_barrier
	BL	memory_barrier<>(SB)
	B	end
native_barrier:
	DMB	MB_ISH
end:
	MOVW	R1, ret+4(FP)
	RET

TEXT	·Store(SB),NOSPLIT,$0-8
	MOVW	addr+0(FP), R1
	MOVW	v+4(FP), R2

	MOVB	runtime·goarm(SB), R8
	CMP	$7, R8

	tstb()
	by = bx[2:hb]
	tstb()
	by = bx[2:10]
	tstb()
	by = bx[2:]
	tstb()

	lb = 0
	hb = 8
	by = bx[lb:hb]
	tstb()
	by = bx[lb:8]
	tstb()
	by = bx[0:hb]
	tstb()
	by = bx[0:8]
	tstb()
	by = bx[:8]
	tstb()
	by = bx[:hb]
	tstb()

	lb = 2
	hb = 8
	by = bx[lb:hb]
	tstb()
	by = bx[lb:8]
	tstb()
	by = bx[2:hb]
	tstb()
	by = bx[2:8]
	tstb()

	}
	len := len(buf)
	// The runtime hasher only works on uintptr. For 64-bit
	// architectures, we use the hasher directly. Otherwise,
	// we use two parallel hashers on the lower and upper 32 bits.
	if unsafe.Sizeof(uintptr(0)) == 8 {
		return uint64(runtime_memhash(unsafe.Pointer(&buf[0]), uintptr(seed), uintptr(len)))
	}
	lo := runtime_memhash(unsafe.Pointer(&buf[0]), uintptr(seed), uintptr(len))

	MOVL eaxArg+0(FP), AX
	MOVL ecxArg+4(FP), CX
	CPUID
	MOVL AX, eax+8(FP)
	MOVL BX, ebx+12(FP)
	MOVL CX, ecx+16(FP)
	MOVL DX, edx+20(FP)
	RET

// func xgetbv() (eax, edx uint32)
TEXT ·xgetbv(SB),NOSPLIT,$0-8
	MOVL $0, CX
	XGETBV
	MOVL AX, eax+0(FP)
	MOVL DX, edx+4(FP)

//
// syscall expects a 32-bit result and tests for 32-bit -1
// to decide there was an error.
TEXT runtime·syscall(SB),NOSPLIT,$32
	MOVD    R3, R14			// pointer to args

	MOVD	(0*8)(R14), R12		// fn
	MOVD	(1*8)(R14), R3		// a1
	MOVD	(2*8)(R14), R4		// a2
	MOVD	(3*8)(R14), R5		// a3
	MOVD	$0, R6			// vararg

	MOVD	R12, CTR
	CALL	(CTR)

	MOVD	R3, (4*8)(R14)		// r1

		name string
		out  string
		ok   bool
	}{
		{"", "", "", false},
		{"X", "", "", false},
		{"PST", "PST", "", true},
		{"PST8PDT", "PST", "8PDT", true},
		{"PST-08", "PST", "-08", true},
		{"<A+B>+08", "A+B", "+08", true},
	} {
		name, out, ok := time.TzsetName(test.in)
		if name != test.name || out != test.out || ok != test.ok {

	a := make([]int, N+10)

	x := &X{a}

	go func() {
		for i := 0; i < N; i++ {
			x.s = x.s[1:9]
		}
		done <- struct{}{}
	}()
	go func() {
		for i := 0; i < N; i++ {
			x.s = x.s[0:8] // should only write len
		}
		done <- struct{}{}
	}()
	<-done
	<-done

	if cap(x.s) != cap(a)-N {
		t.Errorf("wanted cap=%d, got %d\n", cap(a)-N, cap(x.s))
	}
	if &x.s[0] != &a[N] {

#include "textflag.h"

// See memclrNoHeapPointers Go doc for important implementation constraints.

// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr)
TEXT runtime·memclrNoHeapPointers(SB), NOSPLIT, $0-8
	MOVL	ptr+0(FP), DI
	MOVL	n+4(FP), BX
	XORL	AX, AX

tail:
	TESTL	BX, BX
	JEQ	_0
	CMPL	BX, $2
	JBE	_1or2
	CMPL	BX, $4
	JB	_3
	JE	_4
	CMPL	BX, $8
	JBE	_5through8
	CMPL	BX, $16