Improve the generation of programs and tests.

programs/tests/CMakeLists.txt

@@ -8,51 +8,6 @@ cmake_minimum_required(VERSION 3.1...3.22)
 # Initialize the project.
 project(tests C)
 
-# =============================================================================
-# List of programs.
-# =============================================================================
-# Add your file in this list.
-set(TESTS
-    t_mem.c
-    t_fork.c
-    # Test real-time programs.
-    t_periodic1.c
-    t_periodic2.c
-    t_periodic3.c
-    # Testing task execution.
-    t_exec.c
-    t_exec_callee.c
-    # Test environmental variables.
-    t_setenv.c
-    t_getenv.c
-    # Test signals.
-    t_stopcont.c
-    t_sigusr.c
-    t_abort.c
-    t_sigfpe.c
-    t_siginfo.c
-    t_sleep.c
-    t_sigaction.c
-    t_sigmask.c
-    t_groups.c
-    t_alarm.c
-    t_kill.c
-    t_itimer.c
-    t_gid.c
-    # Test semaphores.
-    t_semget.c
-    t_semflg.c
-    t_semop.c
-    # Test message queues.
-    t_msgget.c
-    # Test shared memory.
-    t_shmget.c
-    t_shm_read.c
-    t_shm_write.c
-    # Test scheduling feedback tests.
-    t_schedfb.c
-)
-
 # =============================================================================
 # C WARNINGs
 # =============================================================================
@@ -84,10 +39,10 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-stack-protector")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-pic")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fomit-frame-pointer")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=i686")
 if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcommon")
 endif()
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=i686")
 
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
@@ -100,30 +55,81 @@ endif(CMAKE_BUILD_TYPE STREQUAL "Debug")
 # =============================================================================
 # BUILD
 # =============================================================================
+# Add your file in this list.
+set(TESTS
+    t_gid.c
+    t_alarm.c
+    t_periodic3.c
+    t_setenv.c
+    t_itimer.c
+    t_fork.c
+    t_semget.c
+    t_exec.c
+    t_sleep.c
+    t_periodic2.c
+    t_sigfpe.c
+    t_sigmask.c
+    t_getenv.c
+    t_sigusr.c
+    t_exec_callee.c
+    t_shmget.c
+    t_stopcont.c
+    t_semop.c
+    t_sigaction.c
+    t_schedfb.c
+    t_siginfo.c
+    t_groups.c
+    t_semflg.c
+    t_abort.c
+    t_msgget.c
+    t_periodic1.c
+    t_kill.c
+    t_shm_write.c
+    t_mem.c
+    t_shm_read.c
+)
 # Set the directory where the compiled binaries will be placed.
 set(MENTOS_TESTS_DIR ${CMAKE_SOURCE_DIR}/files/bin/tests)
 
-foreach(TEST ${TESTS})
+foreach(FILE_NAME ${TESTS})
     # Prepare the program name.
-    string(REPLACE ".c" "" TEST_NAME ${TEST})
+    string(REPLACE ".c" "" EXECUTABLE_NAME ${FILE_NAME})
+    
     # Set the name of the target.
-    set(TARGET_NAME test_${TEST_NAME})
+    set(TARGET_NAME test_${EXECUTABLE_NAME})
+
+    # =========================================================================
+    # TEXT ADDRESS
+    # =========================================================================
+    # Randomize .text section address so when debugging symbols don't clash.
+    # The allowed range is from 256MB to 2.75GB
+    # Minimum allowed address: 0x10000000
+    # Max allowed address: 0xB0000000
+    string(MD5 RAND_HASH ${FILE_NAME})
+    string(SUBSTRING ${RAND_HASH} 1 3 TEXADDR_INFIX)
+    string(RANDOM LENGTH 1 ALPHABET 0123456789AB RANDOM_SEED ${RAND_HASH} TEXADDR_FIRST)
+    set(TEXT_ADDR 0x${TEXADDR_FIRST}${TEXADDR_INFIX}0000)
+
+    # =========================================================================
+    # EXECUTABLE
+    # =========================================================================
     # Create the target.
-    add_executable(${TARGET_NAME} ${TEST})
+    add_executable(${TARGET_NAME} ${CMAKE_SOURCE_DIR}/programs/tests/${FILE_NAME})
+    # Add the dependency to libc.
+    add_dependencies(${TARGET_NAME} libc)
     # Add the includes.
     target_include_directories(${TARGET_NAME} PRIVATE ${CMAKE_SOURCE_DIR}/libc/inc)
     # Link the libc library.
-    target_link_libraries(${TARGET_NAME} ${CMAKE_BINARY_DIR}/libc/libc.a)
-    # Add the dependency to libc.
-    add_dependencies(${TARGET_NAME} libc)
-    # Copy the progam to the bin folder.
-    add_custom_command(
-        TARGET ${TARGET_NAME}
-        BYPRODUCTS ${MENTOS_TESTS_DIR}/${TEST_NAME}
-        COMMAND mkdir -p ${MENTOS_TESTS_DIR}
-        COMMAND cp ${PROJECT_BINARY_DIR}/${TARGET_NAME} ${MENTOS_TESTS_DIR}/${TEST_NAME}
-        DEPENDS ${TARGET_NAME}
-    )
+    target_link_libraries(${TARGET_NAME} libc)
+    # We need to specify the name of the entry function.
+    target_compile_options(${TARGET_NAME} PRIVATE -u_start)
+    # Add the linking properties.
+    set_target_properties(${TARGET_NAME} PROPERTIES LINK_FLAGS "-Wl,-Ttext=${TEXT_ADDR},-e_start,-melf_i386")
+    # Set the output directory.
+    set_target_properties(${TARGET_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${MENTOS_TESTS_DIR}")
+    # Set the output name.
+    set_target_properties(${TARGET_NAME} PROPERTIES OUTPUT_NAME "${EXECUTABLE_NAME}")
+
     # Append the program name to the list of all the executables.
     list(APPEND ALL_TESTS ${TARGET_NAME})
 endforeach()