Date: Tue, 5 Apr 2022 00:33:33 GMT From: Piotr Kubaj <pkubaj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 16c3f5d03e98 - stable/13 - powerpc: implement __clear_cache Message-ID: <202204050033.2350XX8Q084257@gitrepo.freebsd.org>
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The branch stable/13 has been updated by pkubaj (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=16c3f5d03e984a6039a888eec5bcc58735a7d965 commit 16c3f5d03e984a6039a888eec5bcc58735a7d965 Author: Piotr Kubaj <pkubaj@FreeBSD.org> AuthorDate: 2022-04-01 19:13:13 +0000 Commit: Piotr Kubaj <pkubaj@FreeBSD.org> CommitDate: 2022-04-05 00:33:22 +0000 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) --- contrib/llvm-project/compiler-rt/lib/builtins/clear_cache.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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;
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