Low-overhead profiler, part 4: JIT compiler support.

src/lj_asm_mips.h

@@ -1562,6 +1562,17 @@ static void asm_hiop(ASMState *as, IRIns *ir)
 #endif
 }
 
+/* -- Profiling ----------------------------------------------------------- */
+
+static void asm_prof(ASMState *as, IRIns *ir)
+{
+  UNUSED(ir);
+  asm_guard(as, MIPSI_BNE, RID_TMP, RID_ZERO);
+  emit_tsi(as, MIPSI_ANDI, RID_TMP, RID_TMP, HOOK_PROFILE);
+  emit_lsglptr(as, MIPSI_LBU, RID_TMP,
+	       (int32_t)offsetof(global_State, hookmask));
+}
+
 /* -- Stack handling ------------------------------------------------------ */
 
 /* Check Lua stack size for overflow. Use exit handler as fallback. */