feat: 支持位运算字节码与 ToInt32/ToUint32

2026-10-24 18:51:13 +08:00 · 2026-06-09 14:42:58 +08:00
parent 34fab1ee24
commit d07dbf4537
9 changed files with 347 additions and 1 deletions
@@ -0,0 +1,104 @@
+use crate::coercion;
+use crate::vm::Vm;
+use oxide_types::value::JsValue;
+
+impl Vm {
+    #[inline(always)]
+    fn write_ushr_result(&mut self, rd: usize, result: u32) {
+        if result <= i32::MAX as u32 {
+            self.regs[rd] = JsValue::int(result as i32);
+        } else {
+            self.regs[rd] = JsValue::float(result as f64);
+        }
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_bit_and(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[a], sf) & coercion::to_int32(self.regs[b], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_bit_or(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[a], sf) | coercion::to_int32(self.regs[b], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_bit_xor(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[a], sf) ^ coercion::to_int32(self.regs[b], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_shl(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_int32(self.regs[a], sf);
+        let shift = coercion::to_uint32(self.regs[b], sf) & 0x1F;
+        self.regs[rd] = JsValue::int(lhs.wrapping_shl(shift));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_shr(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_int32(self.regs[a], sf);
+        let shift = coercion::to_uint32(self.regs[b], sf) & 0x1F;
+        self.regs[rd] = JsValue::int(lhs >> shift);
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_ushr(&mut self, rd: usize, a: usize, b: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_uint32(self.regs[a], sf);
+        let shift = coercion::to_uint32(self.regs[b], sf) & 0x1F;
+        self.write_ushr_result(rd, lhs >> shift);
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_bit_not(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(!coercion::to_int32(self.regs[a], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_bit_and(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[rd], sf) & coercion::to_int32(self.regs[a], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_bit_or(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[rd], sf) | coercion::to_int32(self.regs[a], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_bit_xor(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        self.regs[rd] = JsValue::int(coercion::to_int32(self.regs[rd], sf) ^ coercion::to_int32(self.regs[a], sf));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_shl(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_int32(self.regs[rd], sf);
+        let shift = coercion::to_uint32(self.regs[a], sf) & 0x1F;
+        self.regs[rd] = JsValue::int(lhs.wrapping_shl(shift));
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_shr(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_int32(self.regs[rd], sf);
+        let shift = coercion::to_uint32(self.regs[a], sf) & 0x1F;
+        self.regs[rd] = JsValue::int(lhs >> shift);
+    }
+
+    #[inline(always)]
+    pub(crate) fn dispatch_compound_ushr(&mut self, rd: usize, a: usize) {
+        let sf = self.kernel.string_forge().as_ref();
+        let lhs = coercion::to_uint32(self.regs[rd], sf);
+        let shift = coercion::to_uint32(self.regs[a], sf) & 0x1F;
+        self.write_ushr_result(rd, lhs >> shift);
+    }
+}