CI: Add MMU test suite

Author: ChinYikMing

.github/workflows/main.yml

@@ -68,6 +68,10 @@ jobs:
       run: |
             make -C tests/system/alignment/
             make distclean && make ENABLE_EXT_C=0 ENABLE_SYSTEM=1 misalign-in-blk-emu -j$(nproc)
+    - name: MMU test
+      run: |
+            make -C tests/system/mmu/
+            make distclean && make ENABLE_SYSTEM=1 mmu-test -j$(nproc)
     - name: gdbstub test
       run: |
             make distclean && make ENABLE_GDBSTUB=1 gdbstub-test -j$(nproc)

Makefile

@@ -303,6 +303,16 @@ misalign-in-blk-emu: $(BIN)
 	             exit 1; \
 	             fi;
 
+EXPECTED_mmu = STORE PAGE FAULT TEST PASSED!
+mmu-test: $(BIN)
+	$(Q)$(PRINTF) "Running vm.elf ... "; \
+	    if [ "$(shell $(BIN) tests/system/mmu/vm.elf | tail -n 2)" = "$(strip $(EXPECTED_mmu)) inferior exit code 0" ]; then \
+	    $(call notice, [OK]); \
+	    else \
+	    $(PRINTF) "Failed.\n"; \
+	    exit 1; \
+	    fi;
+
 # Non-trivial demonstration programs
 ifeq ($(call has, SDL), 1)
 doom_action := (cd $(OUT); ../$(BIN) riscv32/doom)