Source file src/pkg/cmd/vendor/golang.org/x/arch/arm64/arm64asm/gnu.go

     1	// Copyright 2017 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package arm64asm
     6	
     7	import (
     8		"strings"
     9	)
    10	
    11	// GNUSyntax returns the GNU assembler syntax for the instruction, as defined by GNU binutils.
    12	// This form typically matches the syntax defined in the ARM Reference Manual.
    13	func GNUSyntax(inst Inst) string {
    14		switch inst.Op {
    15		case RET:
    16			if r, ok := inst.Args[0].(Reg); ok && r == X30 {
    17				return "ret"
    18			}
    19		case B:
    20			if _, ok := inst.Args[0].(Cond); ok {
    21				return strings.ToLower("b." + inst.Args[0].String() + " " + inst.Args[1].String())
    22			}
    23		case SYSL:
    24			result := strings.ToLower(inst.String())
    25			return strings.Replace(result, "c", "C", -1)
    26		case DCPS1, DCPS2, DCPS3, CLREX:
    27			return strings.ToLower(strings.TrimSpace(inst.String()))
    28		case ISB:
    29			if strings.Contains(inst.String(), "SY") {
    30				result := strings.TrimSuffix(inst.String(), " SY")
    31				return strings.ToLower(result)
    32			}
    33		}
    34		return strings.ToLower(inst.String())
    35	}
    36	

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