// Copyright 2019 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. #ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ #define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ #include <stdint.h> // User-kernel ABI for restartable sequences. // Syscall numbers. #if defined(__x86_64__) constexpr int kRseqSyscall = 334; #elif defined(__aarch64__) constexpr int kRseqSyscall = 293; #else #error "Unknown architecture" #endif // __x86_64__ struct rseq_cs { uint32_t version; uint32_t flags; uint64_t start_ip; uint64_t post_commit_offset; uint64_t abort_ip; } __attribute__((aligned(4 * sizeof(uint64_t)))); // N.B. alignment is enforced by the kernel. struct rseq { uint32_t cpu_id_start; uint32_t cpu_id; struct rseq_cs* rseq_cs; uint32_t flags; } __attribute__((aligned(4 * sizeof(uint64_t)))); constexpr int kRseqFlagUnregister = 1 << 0; constexpr int kRseqCPUIDUninitialized = -1; #endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_