RET

// This is the function registered during sigaction and is invoked when
// a signal is received. It just redirects to the Go function sigtrampgo.
// Called using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME|NOFRAME,$0
	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	// Set up ABIInternal environment: g in R14, cleared X15.
	get_tls(R12)
	MOVQ	g(R12), R14
	PXOR	X15, X15

	MOVW	info+8(FP), R1
	MOVW	ctx+12(FP), R2
	MOVW	fn+0(FP), R3
	MOVW	R13, R9
	SUB	$24, R13
	BIC	$0x7, R13 // alignment for ELF ABI
	BL	(R3)
	MOVW	R9, R13
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$0
	// Reserve space for callee-save registers and arguments.
	MOVM.DB.W [R4-R11], (R13)
	SUB	$16, R13

	// If called from an external code context, g will not be set.
	// Save R0, since runtime·load_g will clobber it.

	MOVL	CX, 4(SP)
	MOVL	DX, 8(SP)
	MOVL	SI, 12(SP)	// save SI: handler might be a Go function
	CALL	AX
	MOVL	12(SP), AX
	MOVL	AX, SP
	RET

// Called using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$28
	// Save callee-saved C registers, since the caller may be a C signal handler.
	MOVL	BX, bx-4(SP)
	MOVL	BP, bp-8(SP)
	MOVL	SI, si-12(SP)
	MOVL	DI, di-16(SP)

	RET

TEXT runtime·sigfwd(SB),NOSPLIT,$0-32
	MOVW	sig+8(FP), R0
	MOVD	info+16(FP), R1
	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$176
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	// Save arguments.

	MOVW	sig+8(FP), R0
	MOVD	info+16(FP), R1
	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)
	RET

// Called from c-abi, R0: sig, R1: info, R2: cxt
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$176
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	if s.CFunc() {
		fmt.Fprintf(ctxt.Bso, "cfunc ")
	}
	if s.NoSplit() {
		fmt.Fprintf(ctxt.Bso, "nosplit ")
	}
	if s.Func() != nil && s.Func().FuncFlag&abi.FuncFlagTopFrame != 0 {
		fmt.Fprintf(ctxt.Bso, "topframe ")
	}
	if s.Func() != nil && s.Func().FuncFlag&abi.FuncFlagAsm != 0 {
		fmt.Fprintf(ctxt.Bso, "asm ")
	}
	fmt.Fprintf(ctxt.Bso, "size=%d", s.Size)
	if s.Type == objabi.STEXT {
		fn := s.Func()

	MOVL	CX, 4(SP)
	MOVL	DX, 8(SP)
	MOVL	SI, 12(SP)	// save SI: handler might be a Go function
	CALL	AX
	MOVL	12(SP), AX
	MOVL	AX, SP
	RET

// Called by OS using C ABI.
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$28
	NOP	SP	// tell vet SP changed - stop checking offsets
	// Save callee-saved C registers, since the caller may be a C signal handler.
	MOVL	BX, bx-4(SP)
	MOVL	BP, bp-8(SP)
	MOVL	SI, si-12(SP)
	MOVL	DI, di-16(SP)

		if !fi.Valid() {
			continue
		}
		fpcsp := d.ldr.Pcsp(s)

		// Emit a FDE, Section 6.4.1.
		// First build the section contents into a byte buffer.
		deltaBuf = deltaBuf[:0]
		if haslr && fi.TopFrame() {
			// Mark the link register as having an undefined value.
			// This stops call stack unwinders progressing any further.
			// TODO: similar mark on non-LR architectures.

func (s *LSym) TextAttrString() string {
	attr := s.Attribute.String()
	if s.Func().FuncFlag&abi.FuncFlagTopFrame != 0 {
		if attr != "" {
			attr += "|"
		}
		attr += "TOPFRAME"
	}
	return attr
}

func (s *LSym) String() string {
	return s.Name
}

// The compiler needs *LSym to be assignable to cmd/compile/internal/ssa.Sym.
func (*LSym) CanBeAnSSASym() {}

	}
	return (*goobj.FuncInfo)(nil).ReadFile(fi.data, fi.lengths.FileOff, uint32(k))
}

// TopFrame returns true if the function associated with this FuncInfo
// is an entry point, meaning that unwinders should stop when they hit
// this function.
func (fi *FuncInfo) TopFrame() bool {
	return (fi.FuncFlag() & abi.FuncFlagTopFrame) != 0
}

type InlTreeNode struct {
	Parent   int32