Split out crt from wutnewlib to wutcrt.

Can now optionally link newlib, stdc++, devoptab.

libraries/CMakeLists.txt

@@ -4,6 +4,7 @@ project(libraries C)
 add_subdirectory(libdefaultheap)
 add_subdirectory(libgfd)
 add_subdirectory(libwhb)
+add_subdirectory(wutcrt)
 add_subdirectory(wutdevoptab)
 add_subdirectory(wutnewlib)
 add_subdirectory(wutstdc++)

libraries/wutcrt/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.2)
+project(wutnewlib C)
+
+set_property(SOURCE crt0.s PROPERTY LANGUAGE C)
+
+add_library(wutcrt
+   crt0.s
+   wut_crt.c)
+target_include_directories(wutcrt PRIVATE "${WUT_ROOT}/include")
+
+install(TARGETS wutcrt
+        ARCHIVE DESTINATION "${CMAKE_INSTALL_PREFIX}/lib")

libraries/wutcrt/crt0.s

@@ -1,15 +1,18 @@
 .extern main
 .extern exit
+.extern __init_wut
+.extern __fini_wut
 
 .global _start
 _start:
    stwu 1, -0x8(1)
    stw 3, 0(1)
    stw 4, 4(1)
-   bl __init_wut_newlibc
+   bl __init_wut
    lwz 3, 0(1)
    lwz 4, 4(1)
    bl main
+   bl __fini_wut
    # Calling __fini is leading to crashes!
    # bl __fini
    addi 1, 1, 0x8

libraries/wutcrt/wut_crt.c

@@ -0,0 +1,39 @@
+extern void __init_wut_newlib() __attribute__((weak));
+extern void __init_wut_devoptab() __attribute__((weak));
+extern void __init_wut_stdcpp() __attribute__((weak));
+
+extern void __fini_wut_devoptab() __attribute__((weak));
+extern void __fini_wut_newlib() __attribute__((weak));
+extern void __fini_wut_stdcpp() __attribute__((weak));
+
+void
+__init_wut()
+{
+   if (__init_wut_newlib) {
+      __init_wut_newlib();
+   }
+
+   if (__init_wut_devoptab) {
+      __init_wut_devoptab();
+   }
+
+   if (__init_wut_stdcpp) {
+      __init_wut_stdcpp();
+   }
+}
+
+void
+__fini_wut()
+{
+   if (__fini_wut_stdcpp) {
+      __fini_wut_stdcpp();
+   }
+
+   if (__fini_wut_devoptab) {
+      __fini_wut_devoptab();
+   }
+
+   if (__fini_wut_newlib) {
+      __fini_wut_newlib();
+   }
+}

libraries/wutnewlib/CMakeLists.txt

@@ -1,10 +1,7 @@
 cmake_minimum_required(VERSION 3.2)
 project(wutnewlib C)
 
-set_property(SOURCE crt0.s PROPERTY LANGUAGE C)
-
 add_library(wutnewlib
-   crt0.s
    sleep.c
    syscalls.c)
 target_include_directories(wutnewlib PRIVATE "${WUT_ROOT}/include")

libraries/wutnewlib/syscalls.c

@@ -18,9 +18,6 @@ static uint8_t *sHeapBase = NULL;
 static uint32_t sHeapMaxSize = 0;
 static volatile uint32_t sHeapSize = 0;
 
-void
-__init_wut_newlibc();
-
 static void *
 __libwut_sbrk_r(struct _reent *r,
                 ptrdiff_t incr)
@@ -172,16 +169,16 @@ __init_syscall_array()
    __syscalls.gettod_r = __libwut_gettod_r;
 }
 
-extern void __init_wut_gthread() __attribute__((weak));
-
 void
-__init_wut_newlibc()
+__init_wut_newlib()
 {
    __init_libc_heap();
    __init_malloc_lock();
    __init_syscall_array();
-
-   if (__init_wut_gthread) {
-      __init_wut_gthread();
-   }
+}
+
+void
+__fini_wut_newlib()
+{
+   __free_libc_heap();
 }

libraries/wutstdc++/CMakeLists.txt

@@ -8,7 +8,8 @@ add_library(wutstdc++
    wut_gthread_mutex.cc
    wut_gthread_once.cc
    wut_gthread_recursive_mutex.cc
-   wut_gthread_thread.cc)
+   wut_gthread_thread.cc
+   wut_stdcpp.cc)
 
 target_compile_definitions(wutstdc++
    PRIVATE _GLIBCXX_HAS_GTHREADS)

libraries/wutstdc++/wut_gthread.cc

@@ -37,9 +37,6 @@ __wut_active_p()
    return 1;
 }
 
-extern "C"
-{
-
 void
 __init_wut_gthread()
 {
@@ -74,5 +71,3 @@ __init_wut_gthread()
    __gthread_impl.cond_wait_recursive = (__gthread_fn_cond_wait_recursive)__wut_cond_wait_recursive;
    __gthread_impl.cond_destroy = (__gthread_fn_cond_destroy)__wut_cond_destroy;
 }
-
-} // extern "c"

libraries/wutstdc++/wut_gthread.h

@@ -20,6 +20,9 @@
 typedef volatile uint32_t __wut_once_t;
 typedef uint32_t __wut_key_t;
 
+void
+__init_wut_gthread();
+
 int
 __wut_active_p();
 

libraries/wutstdc++/wut_stdcpp.cc

@@ -0,0 +1,12 @@
+#include "wut_gthread.h"
+
+extern "C" void
+__init_wut_stdcpp()
+{
+   __init_wut_gthread();
+}
+
+extern "C" void
+__fini_wut_stdcpp()
+{
+}

share/wut.cmake

@@ -1,24 +1,39 @@
 cmake_minimum_required(VERSION 3.2)
 
+macro(wut_enable_newlib target)
+   set_property(TARGET ${target}
+      APPEND_STRING PROPERTY
+         LINK_FLAGS  " -Wl,--whole-archive -lwutnewlib -Wl,--no-whole-archive")
+endmacro(wut_enable_newlib)
+
+macro(wut_enable_devoptab target)
+   set_property(TARGET ${target}
+      APPEND_STRING PROPERTY
+         LINK_FLAGS  " -Wl,--whole-archive -lwutdevoptab -Wl,--no-whole-archive")
+endmacro(wut_enable_devoptab)
+
 macro(wut_enable_stdcpp target)
    target_link_libraries(${target}
-       wutnewlib
-       stdc++)
+      stdc++)
 
-   set_target_properties(${target} PROPERTIES
-      COMPILE_FLAGS "-std=c++17"
-      LINK_FLAGS "-Wl,--whole-archive -lwutstdc++ -Wl,--no-whole-archive")
+   set_property(TARGET ${target}
+      APPEND_STRING PROPERTY
+         COMPILE_FLAGS "-std=c++17")
+
+   set_property(TARGET ${target}
+      APPEND_STRING PROPERTY
+         LINK_FLAGS " -Wl,--whole-archive -lwutstdc++ -Wl,--no-whole-archive")
 endmacro(wut_enable_stdcpp)
 
 macro(wut_create_rpx target source)
    target_link_libraries(${source}
-       wutnewlib
-       coreinit)
+      wutnewlib
+      coreinit)
 
    add_custom_target(${target} ALL
-       COMMAND ${WUT_ELF2RPL} ${source} ${target}
-       DEPENDS ${source}
-       COMMENT "Converting to RPX ${target}")
+      COMMAND ${WUT_ELF2RPL} ${source} ${target}
+      DEPENDS ${source}
+      COMMENT "Converting to RPX ${target}")
 
   add_dependencies(${target} ${source})
 endmacro(wut_create_rpx)

share/wut.toolchain.cmake

@@ -30,7 +30,7 @@ set(WUT_C_FLAGS            "-mcpu=750 -meabi -mhard-float -Wl,-q \"-I${WUT_ROOT}
 set(CMAKE_C_FLAGS          "${WUT_C_FLAGS}" CACHE STRING "")
 set(CMAKE_CXX_FLAGS        "${WUT_C_FLAGS}" CACHE STRING "")
 set(CMAKE_ASM_FLAGS        "${WUT_C_FLAGS}" CACHE STRING "")
-set(CMAKE_EXE_LINKER_FLAGS "-Wl,-z,nocopyreloc -T \"${WUT_ROOT}/share/wut.ld\" \"-L${WUT_ROOT}/lib\"" CACHE STRING "")
+set(CMAKE_EXE_LINKER_FLAGS "-Wl,-z,nocopyreloc -T \"${WUT_ROOT}/share/wut.ld\" \"-L${WUT_ROOT}/lib\" -lcoreinit -lwutcrt" CACHE STRING "")
 
 # Setup root to exclude host system headers + libraries
 set(CMAKE_FIND_ROOT_PATH "${DEVKITPPC}" "${WUT_ROOT}/bin" "${CMAKE_INSTALL_PREFIX}" "${CMAKE_INSTALL_PREFIX}/share")