Introduce SemidDs struct for amd64 and arm64.

PiperOrigin-RevId: 338756277

pkg/abi/linux/BUILD

@@ -55,6 +55,8 @@ go_library(
         "sched.go",
         "seccomp.go",
         "sem.go",
+        "sem_amd64.go",
+        "sem_arm64.go",
         "shm.go",
         "signal.go",
         "signalfd.go",

pkg/abi/linux/sem.go

@@ -34,18 +34,6 @@ const (
 
 const SEM_UNDO = 0x1000
 
-// SemidDS is equivalent to struct semid64_ds.
-//
-// +marshal
-type SemidDS struct {
-	SemPerm  IPCPerm
-	SemOTime TimeT
-	SemCTime TimeT
-	SemNSems uint64
-	unused3  uint64
-	unused4  uint64
-}
-
 // Sembuf is equivalent to struct sembuf.
 //
 // +marshal slice:SembufSlice

pkg/abi/linux/sem_amd64.go

@@ -0,0 +1,33 @@
+// Copyright 2020 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.
+
+// +build amd64
+
+package linux
+
+// SemidDS is equivalent to struct semid64_ds.
+//
+// Source: arch/x86/include/uapi/asm/sembuf.h
+//
+// +marshal
+type SemidDS struct {
+	SemPerm  IPCPerm
+	SemOTime TimeT
+	unused1  uint64
+	SemCTime TimeT
+	unused2  uint64
+	SemNSems uint64
+	unused3  uint64
+	unused4  uint64
+}

pkg/abi/linux/sem_arm64.go

@@ -0,0 +1,31 @@
+// Copyright 2020 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.
+
+// +build arm64
+
+package linux
+
+// SemidDS is equivalent to struct semid64_ds.
+//
+// Source: include/uapi/asm-generic/sembuf.h
+//
+// +marshal
+type SemidDS struct {
+	SemPerm  IPCPerm
+	SemOTime TimeT
+	SemCTime TimeT
+	SemNSems uint64
+	unused3  uint64
+	unused4  uint64
+}