// Switch to g0 stack.
	MOVQ	SP, R12		// callee-saved, preserved across the CALL
	MOVQ	m_g0(R13), R10
	CMPQ	R10, R14
	JE	call	// already on g0
	MOVQ	(g_sched+gobuf_sp)(R10), SP
call:
	ANDQ	$~15, SP	// alignment for gcc ABI
	CALL	AX
	MOVQ	R12, SP
	// Back to Go world, set special registers.
	// The g register (R14) is preserved in C.
	XORPS	X15, X15
	RET

func (n *NetworkError) Unwrap() error {
	return n.Err
}

// Client - http based RPC client.
type Client struct {
	connected int32 // ref: https://golang.org/pkg/sync/atomic/#pkg-note-BUG
	_         int32 // For 64 bits alignment
	lastConn  int64

	// HealthCheckFn is the function set to test for health.
	// If not set the client will not keep track of health.
	// Calling this returns true or false if the target
	// is online or offline.

	BranchLikely   = BranchPrediction(+1)
)

type Hotness int8 // Could use negative numbers for specifically non-hot blocks, but don't, yet.
const (
	// These values are arranged in what seems to be order of increasing alignment importance.
	// Currently only a few are relevant.  Implicitly, they are all in a loop.
	HotNotFlowIn Hotness = 1 << iota // This block is only reached by branches

// Called on a system stack, and there may be no g yet (during needm).
TEXT ·asmcgocall_no_g(SB),NOSPLIT,$0-8
	MOVL	fn+0(FP), AX
	MOVL	arg+4(FP), BX
	MOVL	SP, DX
	SUBL	$32, SP
	ANDL	$~15, SP	// alignment, perhaps unnecessary
	MOVL	DX, 8(SP)	// save old SP
	MOVL	BX, 0(SP)	// first argument in x86-32 ABI
	CALL	AX
	MOVL	8(SP), DX
	MOVL	DX, SP
	RET

// func asmcgocall(fn, arg unsafe.Pointer) int32

// currently disabled in -race mode.

var fixedSeed = MakeSeed()

// Sanity checks.
// hash should not depend on values outside key.
// hash should not depend on alignment.
func TestSmhasherSanity(t *testing.T) {
	t.Parallel()
	r := rand.New(rand.NewSource(1234))
	const REP = 10
	const KEYMAX = 128
	const PAD = 16
	const OFFMAX = 16
	for k := 0; k < REP; k++ {

- The _status scheme_ to influence interpretation of the `org.gradle.status` attribute during version selection
- The _belongsTo_ property for <<component_capabilities.adoc#sec:declaring-capabilities-external-modules,version alignment through virtual platforms>>

Depending on the format of the metadata of a module, it is mapped differently to the variant-centric representation of the metadata:

TEXT ·asmcgocall_no_g(SB),NOSPLIT,$0-16
	MOVD	fn+0(FP), R3
	MOVD	arg+8(FP), R4

	MOVD	R1, R15
	SUB	$(asmcgocallSaveOffset+8), R1
	RLDCR	$0, R1, $~15, R1	// 16-byte alignment for gcc ABI
	MOVD	R15, asmcgocallSaveOffset(R1)

	MOVD	R0, 0(R1)	// clear back chain pointer (TODO can we give it real back trace information?)

	// This is a "global call", so put the global entry point in r12

	MOVD	$0, R3

	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
	MOVW	sig+8(FP), R3
	MOVD	info+16(FP), R4
	MOVD	ctx+24(FP), R5
	MOVD	fn+0(FP), R12
	MOVD	R12, CTR
	CALL	(CTR)			// Alignment for ELF ABI?
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$16
	// Go relies on R0 being $0 and we may have been executing non-Go code.
	XOR	R0, R0

}
func BpxGetthent(in *Pgtha, outlen *uint32, out unsafe.Pointer) (rv int32, rc int32, rn int32) {
	var parms [7]unsafe.Pointer
	inlen := uint32(26) // nothing else will work. Go says Pgtha is 28-byte because of alignment, but Pgtha is "packed" and must be 26-byte
	parms[0] = unsafe.Pointer(&inlen)
	parms[1] = unsafe.Pointer(&in)
	parms[2] = unsafe.Pointer(outlen)
	parms[3] = unsafe.Pointer(&out)
	parms[4] = unsafe.Pointer(&rv)

	}

	// If we can't allocate all remaining devices from the set of aligned ones,
	// then start by first allocating all the aligned devices (to ensure
	// that the alignment guaranteed by the TopologyManager is honored).
	if allocateRemainingFrom(aligned) {
		return allocated, nil
	}

	// Then give the plugin the chance to influence the decision on any