| From 89c032a9b4011385c0b504ea61e5df0db71f0ff5 Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Wed, 16 Jun 2021 19:06:02 -0700 |
| Subject: [PATCH] range_tree: Implement toku_time_now for rv32/rv64 in asm |
| |
| Upstream-Status: Pending |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| .../range_tree/lib/portability/toku_time.h | 19 +++++++++++++++++++ |
| 1 file changed, 19 insertions(+) |
| |
| diff --git a/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h b/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h |
| index 4425a4a2e..4ac964f85 100644 |
| --- a/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h |
| +++ b/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h |
| @@ -133,6 +133,25 @@ static inline tokutime_t toku_time_now(void) { |
| return result; |
| #elif defined(__powerpc__) |
| return __ppc_get_timebase(); |
| +#elif defined(__riscv) // RISC-V |
| +#if __riscv_xlen == 32 |
| + uint32_t lo, hi0, hi1; |
| + __asm __volatile__( |
| + "rdcycleh %0\n" |
| + "rdcycle %1\n" |
| + "rdcycleh %2\n" |
| + "sub %0, %0, %2\n" |
| + "seqz %0, %0\n" |
| + "sub %0, zero, %0\n" |
| + "and %1, %1, %0\n" |
| + : "=r"(hi0), "=r"(lo), "=r"(hi1)); |
| + return ((uint64_t)hi1 << 32) | lo; |
| +#else |
| + uint64_t result; |
| + __asm __volatile__("rdcycle %0" : "=r"(result)); |
| + return result; |
| +#endif |
| + |
| #else |
| #error No timer implementation for this platform |
| #endif |
| -- |
| 2.32.0 |
| |