Issue #3049 - Add loongarch64 JIT link-time compatibility stubs

js/src/jit/loongarch64/MacroAssembler-loongarch64-inl.h

@@ -1442,6 +1442,12 @@ void MacroAssembler::wasmBoundsCheck(Condition cond, Register index, L label) {
   MOZ_CRASH("wasm bounds checks are not supported on loongarch64 yet");
 }
 
+void MacroAssembler::wasmPatchBoundsCheck(uint8_t* patchAt, uint32_t limit) {
+  (void)patchAt;
+  (void)limit;
+  MOZ_CRASH("wasm bounds checks are not supported on loongarch64 yet");
+}
+
 void MacroAssembler::memoryBarrier(MemoryBarrierBits barrier) {
   if (barrier == MembarNobits) {
     return;

js/src/jit/loongarch64/MacroAssembler-loongarch64.cpp

@@ -22,6 +22,33 @@
 namespace js {
 namespace jit {
 
+void MacroAssembler::alignFrameForICArguments(AfterICSaveLive& aic) {
+  if (framePushed() % ABIStackAlignment != 0) {
+    aic.alignmentPadding = ABIStackAlignment - (framePushed() % ABIStackAlignment);
+    reserveStack(aic.alignmentPadding);
+  } else {
+    aic.alignmentPadding = 0;
+  }
+  MOZ_ASSERT(framePushed() % ABIStackAlignment == 0);
+}
+
+void MacroAssembler::restoreFrameAlignmentForICArguments(AfterICSaveLive& aic) {
+  if (aic.alignmentPadding != 0) {
+    freeStack(aic.alignmentPadding);
+  }
+}
+
+FrameSizeClass FrameSizeClass::FromDepth(uint32_t frameDepth) {
+  (void)frameDepth;
+  return FrameSizeClass::None();
+}
+
+FrameSizeClass FrameSizeClass::ClassLimit() { return FrameSizeClass(0); }
+
+uint32_t FrameSizeClass::frameSize() const {
+  MOZ_CRASH("loongarch64 does not use frame size classes");
+}
+
 void MacroAssembler::clampDoubleToUint8(FloatRegister input, Register output) {
   ScratchRegisterScope scratch(asMasm());
   ScratchDoubleScope fpscratch(asMasm());
@@ -2409,6 +2436,27 @@ void MacroAssembler::patchFarJump(CodeOffset farJump, uint32_t targetOffset) {
   *u32 = targetOffset - farJump.offset();
 }
 
+void MacroAssembler::repatchFarJump(uint8_t* code, uint32_t farJumpOffset,
+                                    uint32_t targetOffset) {
+  uint32_t* u32 = reinterpret_cast<uint32_t*>(code + farJumpOffset);
+  *u32 = targetOffset - farJumpOffset;
+}
+
+CodeOffset MacroAssembler::nopPatchableToNearJump() {
+  MOZ_CRASH("wasm patchable jumps are not supported on loongarch64");
+}
+
+void MacroAssembler::patchNopToNearJump(uint8_t* jump, uint8_t* target) {
+  (void)jump;
+  (void)target;
+  MOZ_CRASH("wasm patchable jumps are not supported on loongarch64");
+}
+
+void MacroAssembler::patchNearJumpToNop(uint8_t* jump) {
+  (void)jump;
+  MOZ_CRASH("wasm patchable jumps are not supported on loongarch64");
+}
+
 void MacroAssembler::call(wasm::SymbolicAddress target) {
   movePtr(target, CallReg);
   call(CallReg);

js/src/wasm/WasmStubs.cpp

@@ -21,6 +21,7 @@
 #include "mozilla/ArrayUtils.h"
 
 #include "wasm/WasmCode.h"
+#include "wasm/WasmBaselineCompile.h"
 #include "wasm/WasmIonCompile.h"
 
 #include "jit/MacroAssembler-inl.h"
@@ -1098,3 +1099,21 @@ wasm::GenerateThrowStub(MacroAssembler& masm, Label* throwLabel)
     offsets.end = masm.currentOffset();
     return offsets;
 }
+
+#if defined(JS_CODEGEN_LOONGARCH64)
+
+bool
+js::wasm::BaselineCanCompile(const FunctionGenerator* fg)
+{
+    (void)fg;
+    return false;
+}
+
+bool
+js::wasm::CompileFunction(IonCompileTask* task)
+{
+    (void)task;
+    return false;
+}
+
+#endif