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| author | Piotr Kubaj <pkubaj@FreeBSD.org> | 2022-04-01 19:13:13 +0000 |
|---|---|---|
| committer | Piotr Kubaj <pkubaj@FreeBSD.org> | 2022-04-05 00:33:22 +0000 |
| commit | 16c3f5d03e984a6039a888eec5bcc58735a7d965 (patch) | |
| tree | 8278f93b93fb7e3164bbdd768a4d7de7dcefdcbc | |
| parent | 123b4031e96da7953704d027c41d72d8ec0bf77d (diff) | |
| download | src-16c3f5d03e984a6039a888eec5bcc58735a7d965.tar.gz src-16c3f5d03e984a6039a888eec5bcc58735a7d965.zip | |
powerpc: implement __clear_cache
Merge LLVM commit 81f5c6270cdfcdf80e6296df216b696a7a37c8b5.
This fixes runtime of most notably pcre libraries (currently patched in ports),
and probably also other ports since currently __clear_cache() just calls
SIGABRT on powerpc.
Reviewed by: dim
Differential Revision: https://reviews.freebsd.org/D34736
(cherry picked from commit 57b6ac48a96c99e684ab4dc85b8a87097797dc9f)
| -rw-r--r-- | contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c b/contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c index da0715914b41..1f1efbff3ab2 100644 --- a/contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c +++ b/contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c @@ -130,7 +130,10 @@ void __clear_cache(void *start, void *end) { __asm __volatile("dsb ish"); } __asm __volatile("isb sy"); -#elif defined(__powerpc64__) +#elif defined(__powerpc__) + // Newer CPUs have a bigger line size made of multiple blocks, so the + // following value is a minimal common denominator for what used to be + // a single block cache line and is therefore inneficient. const size_t line_size = 32; const size_t len = (uintptr_t)end - (uintptr_t)start; |