| Mark Charlebois | 565cbdc | 2012-11-20 22:13:10 +0100 | [diff] [blame] | 1 | #ifndef __LINUX_COMPILER_H |
| 2 | #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." |
| 3 | #endif |
| 4 | |
| 5 | /* Some compiler specific definitions are overwritten here |
| 6 | * for Clang compiler |
| 7 | */ |
| 8 | |
| 9 | #ifdef uninitialized_var |
| 10 | #undef uninitialized_var |
| 11 | #define uninitialized_var(x) x = *(&(x)) |
| 12 | #endif |
| Arnd Bergmann | b41c29b | 2016-02-08 15:38:32 +0100 | [diff] [blame] | 13 | |
| 14 | /* same as gcc, this was present in clang-2.6 so we can assume it works |
| 15 | * with any version that can compile the kernel |
| 16 | */ |
| 17 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) |
| Sami Tolvanen | 7bd125e | 2017-06-16 12:52:57 -0700 | [diff] [blame] | 18 | |
| 19 | #ifdef CONFIG_LTO_CLANG |
| 20 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
| 21 | #define __norecordmcount \ |
| 22 | __attribute__((__section__(".text..ftrace"))) |
| 23 | #endif |
| Sami Tolvanen | 00a195e | 2017-05-11 15:03:36 -0700 | [diff] [blame] | 24 | |
| 25 | #define __nocfi __attribute__((no_sanitize("cfi"))) |
| Sami Tolvanen | 7bd125e | 2017-06-16 12:52:57 -0700 | [diff] [blame] | 26 | #endif |
| Paul Lawrence | 08da675 | 2018-02-06 15:36:03 -0800 | [diff] [blame] | 27 | |
| 28 | /* all clang versions usable with the kernel support KASAN ABI version 5 */ |
| 29 | #define KASAN_ABI_VERSION 5 |
| 30 | |
| 31 | /* emulate gcc's __SANITIZE_ADDRESS__ flag */ |
| 32 | #if __has_feature(address_sanitizer) |
| 33 | #define __SANITIZE_ADDRESS__ |
| 34 | #endif |
| Greg Kroah-Hartman | bb52bba | 2018-03-18 12:07:50 +0100 | [diff] [blame] | 35 | |
| David Woodhouse | 6123a6b | 2018-02-19 10:50:57 +0000 | [diff] [blame] | 36 | /* Clang doesn't have a way to turn it off per-function, yet. */ |
| 37 | #ifdef __noretpoline |
| 38 | #undef __noretpoline |
| 39 | #endif |