fix

kuznia-rdzeni · Mar 31, 2024 · dd47bf7 · dd47bf7
1 parent 83aeeae
commit dd47bf7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/test/test_core.py b/test/test_core.py
@@ -74,6 +74,10 @@ def push_instr(self, opcode):
 
     def push_register_load_imm(self, reg_id, val):
         addi_imm = signed_to_int(val & 0xFFF, 12)
+        lui_imm = (val & 0xFFFFF000) >> 12
+        # handle addi sign extension, see: https://stackoverflow.com/a/59546567
+        if val & 0x800:
+            lui_imm = (lui_imm + 1) & (0xFFFFF)
 
         yield from self.push_instr(UTypeInstr(opcode=Opcode.LUI, rd=reg_id, imm=lui_imm << 12).encode())
         yield from self.push_instr(