diff options
Diffstat (limited to 'riscv/insns/sc_d.h')
-rw-r--r-- | riscv/insns/sc_d.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/riscv/insns/sc_d.h b/riscv/insns/sc_d.h index aeeabd3..f44d873 100644 --- a/riscv/insns/sc_d.h +++ b/riscv/insns/sc_d.h @@ -1,11 +1,8 @@ require_extension('A'); require_rv64; -if (MMU.check_load_reservation(RS1)) -{ - MMU.store_uint64(RS1, RS2); - WRITE_RD(0); -} -else - WRITE_RD(1); +bool have_reservation = MMU.check_load_reservation(RS1); +MMU.amo_uint64(RS1, [&](uint64_t lhs) { return have_reservation ? RS2 : lhs; }); MMU.yield_load_reservation(); + +WRITE_RD(!have_reservation); |