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-rw-r--r--dev-libs/rocksdb/files/rocksdb-6.17.3-add_timer_for_riscv.patch40
-rw-r--r--dev-libs/rocksdb/rocksdb-6.17.3.ebuild1
2 files changed, 41 insertions, 0 deletions
diff --git a/dev-libs/rocksdb/files/rocksdb-6.17.3-add_timer_for_riscv.patch b/dev-libs/rocksdb/files/rocksdb-6.17.3-add_timer_for_riscv.patch
new file mode 100644
index 000000000000..b98cc9dc5fd6
--- /dev/null
+++ b/dev-libs/rocksdb/files/rocksdb-6.17.3-add_timer_for_riscv.patch
@@ -0,0 +1,40 @@
+Add timer for riscv.
+Upstream PR status: https://github.com/facebook/rocksdb/pull/9215
+This PR hasn't been merged into the main branch.
+https://bugs.gentoo.org/834855
+
+--- a/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h
++++ b/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h
+@@ -101,7 +101,7 @@ int toku_clock_gettime(clockid_t clk_id, struct timespec *ts) __attribute__((__v
+ typedef uint64_t tokutime_t; // Time type used in by tokutek timers.
+
+ #if 0
+-// The value of tokutime_t is not specified here.
++// The value of tokutime_t is not specified here.
+ // It might be microseconds since 1/1/1970 (if gettimeofday() is
+ // used), or clock cycles since boot (if rdtsc is used). Or something
+ // else.
+@@ -133,6 +133,23 @@ static inline tokutime_t toku_time_now(void) {
+ return result;
+ #elif defined(__powerpc__)
+ return __ppc_get_timebase();
++#elif defined(__riscv) && __riscv_xlen == 32
++ uint32_t cycles_lo, cycles_hi0, cycles_hi1;
++ // Implemented in assembly because Clang insisted on branching.
++ 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"(cycles_hi0), "=r"(cycles_lo), "=r"(cycles_hi1));
++ return (static_cast<uint64_t>(cycles_hi1) << 32) | cycles_lo;
++#elif defined(__riscv) && __riscv_xlen == 64
++ uint64_t cycles;
++ asm volatile("rdcycle %0" : "=r"(cycles));
++ return cycles;
+ #else
+ #error No timer implementation for this platform
+ #endif
diff --git a/dev-libs/rocksdb/rocksdb-6.17.3.ebuild b/dev-libs/rocksdb/rocksdb-6.17.3.ebuild
index 76c4d651f8af..b01c64b2d2f8 100644
--- a/dev-libs/rocksdb/rocksdb-6.17.3.ebuild
+++ b/dev-libs/rocksdb/rocksdb-6.17.3.ebuild
@@ -27,6 +27,7 @@ RDEPEND="${DEPEND}"
PATCHES=(
"${FILESDIR}"/${PN}-6.14.6-libatomic.patch
+ "${FILESDIR}"/${PN}-6.17.3-add_timer_for_riscv.patch
)
src_configure() {