1 files changed, 0 insertions, 110 deletions
diff --git a/tools/checklinkname/known.go b/tools/checklinkname/known.go
deleted file mode 100644
index 54e5155fc..000000000
--- a/tools/checklinkname/known.go
+++ /dev/null
@@ -1,110 +0,0 @@
-// Copyright 2021 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package checklinkname
-
-// knownLinknames is the set of the symbols for which we can do a rudimentary
-// type-check on.
-//
-// When analyzing the remote package (e.g., runtime), we verify the symbol
-// signature matches 'remote'. When analyzing local packages with //go:linkname
-// directives, we verify the symbol signature matches 'local'.
-//
-// Usually these are identical, but may differ slightly if equivalent
-// replacement types are used in the local packages, such as a copy of a struct
-// or uintptr instead of a pointer type.
-//
-// NOTE: It is the responsibility of the developer to verify the safety of the
-// signatures used here! This analyzer only checks that types match this map;
-// it does not verify compatibility of the entries themselves.
-//
-// //go:linkname directives with no corresponding entry here will trigger a
-// finding.
-//
-// We preform only rudimentary string-based type-checking due to limitations in
-// the analysis framework. Ideally, from the local package we'd lookup the
-// remote symbol's types.Object and perform robust type-checking.
-// Unfortunately, remote symbols are typically loaded from the remote package's
-// gcexportdata. Since //go:linkname targets are usually not exported symbols,
-// they are no included in gcexportdata and we cannot load their types.Object.
-//
-// TODO(b/165820485): Add option to specific per-version signatures.
-var knownLinknames = map[string]map[string]linknameSignatures{
-	"runtime": map[string]linknameSignatures{
-		"entersyscall": linknameSignatures{
-			local: "func()",
-		},
-		"entersyscallblock": linknameSignatures{
-			local: "func()",
-		},
-		"exitsyscall": linknameSignatures{
-			local: "func()",
-		},
-		"fastrand": linknameSignatures{
-			local: "func() uint32",
-		},
-		"gopark": linknameSignatures{
-			// TODO(b/165820485): add verification of waitReason
-			// size and reason and traceEv values.
-			local:  "func(unlockf func(uintptr, unsafe.Pointer) bool, lock unsafe.Pointer, reason uint8, traceEv byte, traceskip int)",
-			remote: "func(unlockf func(*runtime.g, unsafe.Pointer) bool, lock unsafe.Pointer, reason runtime.waitReason, traceEv byte, traceskip int)",
-		},
-		"goready": linknameSignatures{
-			local:  "func(gp uintptr, traceskip int)",
-			remote: "func(gp *runtime.g, traceskip int)",
-		},
-		"goyield": linknameSignatures{
-			local: "func()",
-		},
-		"memmove": linknameSignatures{
-			local: "func(to unsafe.Pointer, from unsafe.Pointer, n uintptr)",
-		},
-		"throw": linknameSignatures{
-			local: "func(s string)",
-		},
-	},
-	"sync": map[string]linknameSignatures{
-		"runtime_canSpin": linknameSignatures{
-			local: "func(i int) bool",
-		},
-		"runtime_doSpin": linknameSignatures{
-			local: "func()",
-		},
-		"runtime_Semacquire": linknameSignatures{
-			// The only difference here is the parameter names. We
-			// can't just change our local use to match remote, as
-			// the stdlib runtime and sync packages also disagree
-			// on the name, and the analyzer checks that use as
-			// well.
-			local:  "func(addr *uint32)",
-			remote: "func(s *uint32)",
-		},
-		"runtime_Semrelease": linknameSignatures{
-			// See above.
-			local:  "func(addr *uint32, handoff bool, skipframes int)",
-			remote: "func(s *uint32, handoff bool, skipframes int)",
-		},
-	},
-	"syscall": map[string]linknameSignatures{
-		"runtime_BeforeFork": linknameSignatures{
-			local: "func()",
-		},
-		"runtime_AfterFork": linknameSignatures{
-			local: "func()",
-		},
-		"runtime_AfterForkInChild": linknameSignatures{
-			local: "func()",
-		},
-	},
-}