Elliott Hughes | c5d028f | 2013-01-10 14:42:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef LIBC_PRIVATE_KERNEL_SIGSET_T_H_ |
| 18 | #define LIBC_PRIVATE_KERNEL_SIGSET_T_H_ |
| 19 | |
| 20 | // Our sigset_t is wrong for ARM and x86. It's 32-bit but the kernel expects 64 bits. |
| 21 | // This means we can't support real-time signals correctly until we can change the ABI. |
| 22 | // In the meantime, we can use this union to pass an appropriately-sized block of memory |
| 23 | // to the kernel, at the cost of not being able to refer to real-time signals. |
| 24 | union kernel_sigset_t { |
| 25 | kernel_sigset_t() { |
| 26 | clear(); |
| 27 | } |
| 28 | |
| 29 | kernel_sigset_t(const sigset_t* value) { |
| 30 | clear(); |
| 31 | set(value); |
| 32 | } |
| 33 | |
| 34 | void clear() { |
Elliott Hughes | 1195207 | 2013-10-24 15:15:14 -0700 | [diff] [blame] | 35 | __builtin_memset(this, 0, sizeof(*this)); |
Elliott Hughes | c5d028f | 2013-01-10 14:42:14 -0800 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | void set(const sigset_t* value) { |
| 39 | bionic = *value; |
| 40 | } |
| 41 | |
| 42 | sigset_t* get() { |
| 43 | return &bionic; |
| 44 | } |
| 45 | |
| 46 | sigset_t bionic; |
| 47 | #ifndef __mips__ |
| 48 | uint32_t kernel[2]; |
| 49 | #endif |
| 50 | }; |
| 51 | |
| 52 | #endif |