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| author | Zoran Jovanovic <zoran.jovanovic@mips.com> | 2019-10-17 12:21:14 +0000 |
|---|---|---|
| committer | Zoran Jovanovic <zoran.jovanovic@mips.com> | 2019-10-17 12:21:14 +0000 |
| commit | 9729ecdb6e3c00c6a432ba9d05916d14c6fde0de (patch) | |
| tree | f39f952730e2bd50dedef2d3971f58860bc4a63f | |
| parent | 359fb9dafc705ce2f6c50acd9bdc34fdbfa66e11 (diff) | |
| download | compiler-rt-9729ecdb6e3c00c6a432ba9d05916d14c6fde0de.tar.gz | |
[mips] [builtins] Remove clear_mips_cache
Differential Revision: https://reviews.llvm.org/D69021
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@375110 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/builtins/clear_cache.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/lib/builtins/clear_cache.c b/lib/builtins/clear_cache.c index e94e7f8eb..80d3b2f9f 100644 --- a/lib/builtins/clear_cache.c +++ b/lib/builtins/clear_cache.c @@ -44,46 +44,6 @@ uintptr_t GetCurrentProcess(void); #include <sys/cachectl.h> #include <sys/syscall.h> #include <unistd.h> -#if defined(__ANDROID__) && defined(__LP64__) -// clear_mips_cache - Invalidates instruction cache for Mips. -static void clear_mips_cache(const void *Addr, size_t Size) { - __asm__ volatile( - ".set push\n" - ".set noreorder\n" - ".set noat\n" - "beq %[Size], $zero, 20f\n" // If size == 0, branch around. - "nop\n" - "daddu %[Size], %[Addr], %[Size]\n" // Calculate end address + 1 - "rdhwr $v0, $1\n" // Get step size for SYNCI. - // $1 is $HW_SYNCI_Step - "beq $v0, $zero, 20f\n" // If no caches require - // synchronization, branch - // around. - "nop\n" - "10:\n" - "synci 0(%[Addr])\n" // Synchronize all caches around - // address. - "daddu %[Addr], %[Addr], $v0\n" // Add step size. - "sltu $at, %[Addr], %[Size]\n" // Compare current with end - // address. - "bne $at, $zero, 10b\n" // Branch if more to do. - "nop\n" - "sync\n" // Clear memory hazards. - "20:\n" - "bal 30f\n" - "nop\n" - "30:\n" - "daddiu $ra, $ra, 12\n" // $ra has a value of $pc here. - // Add offset of 12 to point to the - // instruction after the last nop. - // - "jr.hb $ra\n" // Return, clearing instruction - // hazards. - "nop\n" - ".set pop\n" - : [ Addr ] "+r"(Addr), [ Size ] "+r"(Size)::"at", "ra", "v0", "memory"); -} -#endif #endif // The compiler generates calls to __clear_cache() when creating @@ -127,17 +87,7 @@ void __clear_cache(void *start, void *end) { #elif defined(__linux__) && defined(__mips__) const uintptr_t start_int = (uintptr_t)start; const uintptr_t end_int = (uintptr_t)end; -#if defined(__ANDROID__) && defined(__LP64__) - // Call synci implementation for short address range. - const uintptr_t address_range_limit = 256; - if ((end_int - start_int) <= address_range_limit) { - clear_mips_cache(start, (end_int - start_int)); - } else { - syscall(__NR_cacheflush, start, (end_int - start_int), BCACHE); - } -#else syscall(__NR_cacheflush, start, (end_int - start_int), BCACHE); -#endif #elif defined(__mips__) && defined(__OpenBSD__) cacheflush(start, (uintptr_t)end - (uintptr_t)start, BCACHE); #elif defined(__aarch64__) && !defined(__APPLE__) |