#define SYS___nanosleep50		430
#define SYS___kevent50			435
#define SYS____lwp_park60		478

// int32 lwp_create(void *context, uintptr flags, void *lwpid)
TEXT runtime·lwp_create(SB),NOSPLIT,$0
	MOVQ	ctxt+0(FP), DI
	MOVQ	flags+8(FP), SI
	MOVQ	lwpid+16(FP), DX
	MOVL	$SYS__lwp_create, AX
	SYSCALL
	JCC	2(PC)
	NEGQ	AX
	MOVL	AX, ret+24(FP)
	RET

TEXT runtime·lwp_tramp(SB),NOSPLIT,$0

(I64Load32U [off] (LoweredAddr {sym} [off2] (SB)) _) && symIsRO(sym) && isU32Bit(off+int64(off2)) => (I64Const [int64(read32(sym, off+int64(off2), config.ctxt.Arch.ByteOrder))])
(I64Load16U [off] (LoweredAddr {sym} [off2] (SB)) _) && symIsRO(sym) && isU32Bit(off+int64(off2)) => (I64Const [int64(read16(sym, off+int64(off2), config.ctxt.Arch.ByteOrder))])

	SWI $SYS_write
	RSB.CS	$0, R0		// caller expects negative errno
	MOVW	R0, ret+12(FP)
	RET

// int32 lwp_create(void *context, uintptr flags, void *lwpid)
TEXT runtime·lwp_create(SB),NOSPLIT,$0
	MOVW ctxt+0(FP), R0
	MOVW flags+4(FP), R1
	MOVW lwpid+8(FP), R2
	SWI $SYS__lwp_create
	MOVW	R0, ret+12(FP)
	RET

TEXT runtime·osyield(SB),NOSPLIT,$0
	SWI $SYS_sched_yield
	RET

	var off int64
	switch n.Class {
	case ir.PPARAM, ir.PPARAMOUT:
		if !n.IsOutputParamInRegisters() {
			off = n.FrameOffset() + base.Ctxt.Arch.FixedFrameSize
			break
		}
		fallthrough // PPARAMOUT in registers allocates like an AUTO
	case ir.PAUTO:
		off = n.FrameOffset()
		if base.Ctxt.Arch.FixedFrameSize == 0 {
			off -= int64(types.PtrSize)
		}
		if buildcfg.FramePointerEnabled {
			off -= int64(types.PtrSize)

		p := s.Prog(x86.ALEAL)
		p.From.Type = obj.TYPE_MEM
		p.From.Name = obj.NAME_EXTERN
		f := math.Float64frombits(uint64(v.AuxInt))
		if v.Op == ssa.Op386MOVSDconst1 {
			p.From.Sym = base.Ctxt.Float64Sym(f)
		} else {
			p.From.Sym = base.Ctxt.Float32Sym(float32(f))
		}
		p.To.Type = obj.TYPE_REG
		p.To.Reg = v.Reg()
	case ssa.Op386MOVSSconst2, ssa.Op386MOVSDconst2:
		p := s.Prog(v.Op.Asm())
		p.From.Type = obj.TYPE_MEM

// It must be created with [NewChecker].
type Checker struct {
	// package information
	// (initialized by NewChecker, valid for the life-time of checker)
	conf *Config
	ctxt *Context // context for de-duplicating instances
	fset *token.FileSet
	pkg  *Package
	*Info
	version goVersion              // accepted language version

			"\tmorebuf={pc:", hex(morebuf.pc), " sp:", hex(morebuf.sp), " lr:", hex(morebuf.lr), "}\n",
			"\tsched={pc:", hex(gp.sched.pc), " sp:", hex(gp.sched.sp), " lr:", hex(gp.sched.lr), " ctxt:", gp.sched.ctxt, "}\n")

		thisg.m.traceback = 2 // Include runtime frames
		traceback(morebuf.pc, morebuf.sp, morebuf.lr, gp)
		throw("runtime: stack split at bad time")
	}

	morebuf := thisg.m.morebuf

		aoff = objw.BitVec(&argsSymTmp, aoff, args)
		loff = objw.BitVec(&liveSymTmp, loff, locals)
	}

	// These symbols will be added to Ctxt.Data by addGCLocals
	// after parallel compilation is done.
	return base.Ctxt.GCLocalsSym(argsSymTmp.P), base.Ctxt.GCLocalsSym(liveSymTmp.P)
}

// Entry pointer for Compute analysis. Solves for the Compute of
// pointer variables in the function and emits a runtime data

	return
}

func RtlVirtualUnwind(handlerType uint32, baseAddress uintptr, pc uintptr, entry uintptr, ctxt uintptr, data *uintptr, frame *uintptr, ctxptrs *byte) (ret uintptr) {
	r0, _, _ := syscall.Syscall9(procRtlVirtualUnwind.Addr(), 8, uintptr(handlerType), uintptr(baseAddress), uintptr(pc), uintptr(entry), uintptr(ctxt), uintptr(unsafe.Pointer(data)), uintptr(unsafe.Pointer(frame)), uintptr(unsafe.Pointer(ctxptrs)), 0)
	ret = uintptr(r0)

	o0 |= uint32(p.From.Reg&0x1f) << 16         // RA
	if p.From.Offset&0xfffffe07 != 0xfffffe00 {
		c.ctxt.Diag("Constant(%d) must within the range of [-512,-8] in steps of 8\n%v", p.From.Offset, p)
	}
	out[0] = o0
}

// hashstp RB,offset(RA)
func type_hashstp(c *ctxt9, p *obj.Prog, t *Optab, out *[5]uint32) {
	o0 := GenOpcodes[p.As-AXXSETACCZ]
	o0 |= uint32(p.From.Reg&0x1f) << 11       // RB