Source file src/cmd/internal/objabi/funcid.go

     1	// Copyright 2018 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 objabi
     6	
     7	import (
     8		"strconv"
     9		"strings"
    10	)
    11	
    12	// A FuncID identifies particular functions that need to be treated
    13	// specially by the runtime.
    14	// Note that in some situations involving plugins, there may be multiple
    15	// copies of a particular special runtime function.
    16	// Note: this list must match the list in runtime/symtab.go.
    17	type FuncID uint8
    18	
    19	const (
    20		FuncID_normal FuncID = iota // not a special function
    21		FuncID_runtime_main
    22		FuncID_goexit
    23		FuncID_jmpdefer
    24		FuncID_mcall
    25		FuncID_morestack
    26		FuncID_mstart
    27		FuncID_rt0_go
    28		FuncID_asmcgocall
    29		FuncID_sigpanic
    30		FuncID_runfinq
    31		FuncID_gcBgMarkWorker
    32		FuncID_systemstack_switch
    33		FuncID_systemstack
    34		FuncID_cgocallback_gofunc
    35		FuncID_gogo
    36		FuncID_externalthreadhandler
    37		FuncID_debugCallV1
    38		FuncID_gopanic
    39		FuncID_panicwrap
    40		FuncID_wrapper // any autogenerated code (hash/eq algorithms, method wrappers, etc.)
    41	)
    42	
    43	// Get the function ID for the named function in the named file.
    44	// The function should be package-qualified.
    45	func GetFuncID(name, file string) FuncID {
    46		switch name {
    47		case "runtime.main":
    48			return FuncID_runtime_main
    49		case "runtime.goexit":
    50			return FuncID_goexit
    51		case "runtime.jmpdefer":
    52			return FuncID_jmpdefer
    53		case "runtime.mcall":
    54			return FuncID_mcall
    55		case "runtime.morestack":
    56			return FuncID_morestack
    57		case "runtime.mstart":
    58			return FuncID_mstart
    59		case "runtime.rt0_go":
    60			return FuncID_rt0_go
    61		case "runtime.asmcgocall":
    62			return FuncID_asmcgocall
    63		case "runtime.sigpanic":
    64			return FuncID_sigpanic
    65		case "runtime.runfinq":
    66			return FuncID_runfinq
    67		case "runtime.gcBgMarkWorker":
    68			return FuncID_gcBgMarkWorker
    69		case "runtime.systemstack_switch":
    70			return FuncID_systemstack_switch
    71		case "runtime.systemstack":
    72			return FuncID_systemstack
    73		case "runtime.cgocallback_gofunc":
    74			return FuncID_cgocallback_gofunc
    75		case "runtime.gogo":
    76			return FuncID_gogo
    77		case "runtime.externalthreadhandler":
    78			return FuncID_externalthreadhandler
    79		case "runtime.debugCallV1":
    80			return FuncID_debugCallV1
    81		case "runtime.gopanic":
    82			return FuncID_gopanic
    83		case "runtime.panicwrap":
    84			return FuncID_panicwrap
    85		}
    86		if file == "<autogenerated>" {
    87			return FuncID_wrapper
    88		}
    89		if strings.HasPrefix(name, "runtime.call") {
    90			if _, err := strconv.Atoi(name[12:]); err == nil {
    91				// runtime.callXX reflect call wrappers.
    92				return FuncID_wrapper
    93			}
    94		}
    95		if strings.HasSuffix(name, "-fm") {
    96			return FuncID_wrapper
    97		}
    98		return FuncID_normal
    99	}
   100	

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