diff options
Diffstat (limited to 'src/cmd/internal/objabi/funcid.go')
-rw-r--r-- | src/cmd/internal/objabi/funcid.go | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/cmd/internal/objabi/funcid.go b/src/cmd/internal/objabi/funcid.go new file mode 100644 index 0000000..084fcdf --- /dev/null +++ b/src/cmd/internal/objabi/funcid.go @@ -0,0 +1,91 @@ +// 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, + "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, + "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 +} |