Current File : //usr/local/go119/src/cmd/internal/objabi/funcid.go
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package objabi
import "strings"
// A FuncFlag records bits about a function, passed to the runtime.
type FuncFlag uint8
// Note: This list must match the list in runtime/symtab.go.
const (
FuncFlag_TOPFRAME = 1 << iota
FuncFlag_SPWRITE
FuncFlag_ASM
)
// A FuncID identifies particular functions that need to be treated
// specially by the runtime.
// Note that in some situations involving plugins, there may be multiple
// copies of a particular special runtime function.
type FuncID uint8
// Note: this list must match the list in runtime/symtab.go.
const (
FuncID_normal FuncID = iota // not a special function
FuncID_abort
FuncID_asmcgocall
FuncID_asyncPreempt
FuncID_cgocallback
FuncID_debugCallV2
FuncID_gcBgMarkWorker
FuncID_goexit
FuncID_gogo
FuncID_gopanic
FuncID_handleAsyncEvent
FuncID_mcall
FuncID_morestack
FuncID_mstart
FuncID_panicwrap
FuncID_rt0_go
FuncID_runfinq
FuncID_runtime_main
FuncID_sigpanic
FuncID_systemstack
FuncID_systemstack_switch
FuncID_wrapper // any autogenerated code (hash/eq algorithms, method wrappers, etc.)
)
var funcIDs = map[string]FuncID{
"abort": FuncID_abort,
"asmcgocall": FuncID_asmcgocall,
"asyncPreempt": FuncID_asyncPreempt,
"cgocallback": FuncID_cgocallback,
"debugCallV2": FuncID_debugCallV2,
"gcBgMarkWorker": FuncID_gcBgMarkWorker,
"rt0_go": FuncID_rt0_go,
"goexit": FuncID_goexit,
"gogo": FuncID_gogo,
"gopanic": FuncID_gopanic,
"handleAsyncEvent": FuncID_handleAsyncEvent,
"main": FuncID_runtime_main,
"mcall": FuncID_mcall,
"morestack": FuncID_morestack,
"mstart": FuncID_mstart,
"panicwrap": FuncID_panicwrap,
"runfinq": FuncID_runfinq,
"sigpanic": FuncID_sigpanic,
"systemstack_switch": FuncID_systemstack_switch,
"systemstack": FuncID_systemstack,
// Don't show in call stack but otherwise not special.
"deferreturn": FuncID_wrapper,
"runOpenDeferFrame": FuncID_wrapper,
"deferCallSave": FuncID_wrapper,
}
// Get the function ID for the named function in the named file.
// The function should be package-qualified.
func GetFuncID(name string, isWrapper bool) FuncID {
if isWrapper {
return FuncID_wrapper
}
if strings.HasPrefix(name, "runtime.") {
if id, ok := funcIDs[name[len("runtime."):]]; ok {
return id
}
}
return FuncID_normal
}
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