diff options
Diffstat (limited to 'src/wasm.h')
| -rw-r--r-- | src/wasm.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/wasm.h b/src/wasm.h index ce6b9d294..26b5e18e1 100644 --- a/src/wasm.h +++ b/src/wasm.h @@ -45,6 +45,7 @@ #include <cassert> #include <cmath> +#include <climits> #include <cstddef> #include <cstdint> #include <cstring> @@ -503,6 +504,32 @@ public: default: WASM_UNREACHABLE(); } } + template <typename T> + static T rol(T val, T count) { + T mask = sizeof(T) * CHAR_BIT - 1; + count &= mask; + return (val << count) | (val >> (-count & mask)); + } + Literal rotL(const Literal& other) const { + switch (type) { + case WasmType::i32: return Literal(rol(uint32_t(i32), uint32_t(other.i32))); + case WasmType::i64: return Literal(rol(uint64_t(i64), uint64_t(other.i64))); + default: WASM_UNREACHABLE(); + } + } + template <typename T> + static T ror (T val, T count) { + T mask = sizeof(T) * CHAR_BIT - 1; + count &= mask; + return (val >> count) | (val << (-count & mask)); + } + Literal rotR(const Literal& other) const { + switch (type) { + case WasmType::i32: return Literal(ror(uint32_t(i32), uint32_t(other.i32))); + case WasmType::i64: return Literal(ror(uint64_t(i64), uint64_t(other.i64))); + default: WASM_UNREACHABLE(); + } + } Literal eq(const Literal& other) const { switch (type) { @@ -676,7 +703,7 @@ enum UnaryOp { enum BinaryOp { Add, Sub, Mul, // int or float - DivS, DivU, RemS, RemU, And, Or, Xor, Shl, ShrU, ShrS, // int + DivS, DivU, RemS, RemU, And, Or, Xor, Shl, ShrU, ShrS, RotL, RotR, // int Div, CopySign, Min, Max, // float // relational ops Eq, Ne, // int or float |