diff options
| author | Renato Golin <renato.golin@linaro.org> | 2017-02-21 17:40:26 +0000 |
|---|---|---|
| committer | Renato Golin <renato.golin@linaro.org> | 2017-02-21 17:40:26 +0000 |
| commit | cf1dffa34854a5d1d7f15fe2acf8d65db6dd3843 (patch) | |
| tree | 1e58925ca0d4f1e2b282bc6b0e17f8c1528bdf31 /lib/builtins/clear_cache.c | |
| parent | f9ab05ca2548238f0a8434f4e92d92c887a75f33 (diff) | |
[RT ARM] Avoid Linux include with a redefinition
To avoid depending on kernel headers, we just repeat the single define
we need, which is likely never going to change.
Patch by Joakim Sindholt <opensource@zhasha.com>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@295738 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/builtins/clear_cache.c')
| -rw-r--r-- | lib/builtins/clear_cache.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/builtins/clear_cache.c b/lib/builtins/clear_cache.c index 4c2ac3b1e..a68f9fcfb 100644 --- a/lib/builtins/clear_cache.c +++ b/lib/builtins/clear_cache.c @@ -82,10 +82,6 @@ uintptr_t GetCurrentProcess(void); #endif #endif -#if defined(__linux__) && defined(__arm__) - #include <asm/unistd.h> -#endif - /* * The compiler generates calls to __clear_cache() when creating * trampoline functions on the stack for use with nested functions. @@ -108,6 +104,15 @@ void __clear_cache(void *start, void *end) { sysarch(ARM_SYNC_ICACHE, &arg); #elif defined(__linux__) + /* + * We used to include asm/unistd.h for the __ARM_NR_cacheflush define, but + * it also brought many other unused defines, as well as a dependency on + * kernel headers to be installed. + * + * This value is stable at least since Linux 3.13 and should remain so for + * compatibility reasons, warranting it's re-definition here. + */ + #define __ARM_NR_cacheflush 0x0f0002 register int start_reg __asm("r0") = (int) (intptr_t) start; const register int end_reg __asm("r1") = (int) (intptr_t) end; const register int flags __asm("r2") = 0; |