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author | Sterling Augustine <saugustine@google.com> | 2017-07-28 19:49:22 +0000 |
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committer | Sterling Augustine <saugustine@google.com> | 2017-07-28 19:49:22 +0000 |
commit | b340d2cc8cfa5f26019be4e14a03873d41341e32 (patch) | |
tree | f7364175930ead758db8f4760bc13d5a3cbfb3a7 /lib/builtins | |
parent | 99e39e2aaeaa41130b4ef5061ad8cfd58ae1b0e9 (diff) | |
download | compiler-rt-b340d2cc8cfa5f26019be4e14a03873d41341e32.tar.gz |
Add clear_cache implementation for ppc64. Fix buffer to meet ppc64 alignment.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@309423 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/builtins')
-rw-r--r-- | lib/builtins/clear_cache.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/builtins/clear_cache.c b/lib/builtins/clear_cache.c index af4ca619a..3c6570db6 100644 --- a/lib/builtins/clear_cache.c +++ b/lib/builtins/clear_cache.c @@ -165,6 +165,21 @@ void __clear_cache(void *start, void *end) { for (addr = xstart; addr < xend; addr += icache_line_size) __asm __volatile("ic ivau, %0" :: "r"(addr)); __asm __volatile("isb sy"); +#elif defined (__powerpc64__) && defined(__LITTLE_ENDIAN__) + const size_t line_size = 32; + const size_t len = (uintptr_t)end - (uintptr_t)start; + + const uintptr_t mask = ~(line_size - 1); + const uintptr_t start_line = ((uintptr_t)start) & mask; + const uintptr_t end_line = ((uintptr_t)start + len + line_size - 1) & mask; + + for (uintptr_t line = start_line; line < end_line; line += line_size) + __asm__ volatile("dcbf 0, %0" : : "r"(line)); + __asm__ volatile("sync"); + + for (uintptr_t line = start_line; line < end_line; line += line_size) + __asm__ volatile("icbi 0, %0" : : "r"(line)); + __asm__ volatile("isync"); #else #if __APPLE__ /* On Darwin, sys_icache_invalidate() provides this functionality */ @@ -174,4 +189,3 @@ void __clear_cache(void *start, void *end) { #endif #endif } - |