application.h

#pragma once
 
extern void cmrx_posix_register_application(const struct OS_process_definition_t * process);
 
extern void cmrx_posix_register_thread(const struct OS_thread_create_t * thread);
 
#ifndef APPLICATION_NAME
#   error "Application header included from something that is not an application!"
#endif
 
#define CMRX_VTABLE_SECTION_STR3(section_symbol) # section_symbol
#define CMRX_VTABLE_SECTION_STR2(application_name) CMRX_VTABLE_SECTION_STR3(vtable_ ## application_name)
#define CMRX_VTABLE_SECTION_STR(application_name) CMRX_VTABLE_SECTION_STR2(application_name)
 
#define CMRX_VTABLE_SECTION_START2(application_name) __start_vtable_ ## application_name
#define CMRX_VTABLE_SECTION_START(application_name) CMRX_VTABLE_SECTION_START2(application_name)
 
#define CMRX_VTABLE_SECTION_STOP2(application_name) __stop_vtable_ ## application_name
#define CMRX_VTABLE_SECTION_STOP(application_name) CMRX_VTABLE_SECTION_STOP2(application_name)
 
#define CMRX_VTABLE_SECTION  CMRX_VTABLE_SECTION_STR(APPLICATION_NAME)
#ifdef __APPLE__
#   define CMRX_VTABLE_SPECIFIER const
#else
#   define CMRX_VTABLE_SPECIFIER __attribute__((section(CMRX_VTABLE_SECTION))) const
#endif
 
#ifdef __APPLE__
/* TODO: Just to make the code build. Apple doesn't support section start/stop symbols
   emission. */
long CMRX_VTABLE_SECTION_START(APPLICATION_NAME) __attribute__((weak));
long CMRX_VTABLE_SECTION_STOP(APPLICATION_NAME) __attribute__((weak));
#else
extern long CMRX_VTABLE_SECTION_START(APPLICATION_NAME) __attribute__((weak));
extern long CMRX_VTABLE_SECTION_STOP(APPLICATION_NAME) __attribute__((weak));
#endif
 
#define CMRX_APPLICATION_INSTANCE_CONSTRUCTOR(application) \
void * __APPL_SYMBOL(application, data_start) = (void *) 1;\
void * __APPL_SYMBOL(application, data_end) = (void *) 1;\
void * __APPL_SYMBOL(application, bss_start) = (void *) 1;\
void * __APPL_SYMBOL(application, bss_end) = (void *) 1;\
void * __APPL_SYMBOL(application, shared_start) = (void *) 1;\
void * __APPL_SYMBOL(application, shared_end) = (void *) 1;\
void * __APPL_SYMBOL(application, vtable_start) = (void *) 1;\
void * __APPL_SYMBOL(application, vtable_end) = (void *) 1;\
\
const struct OS_process_definition_t __APPL_SYMBOL(application, instance) = {\
    {\
        { &__APPL_SYMBOL(application, data_start), &__APPL_SYMBOL(application, data_end) },\
        { &__APPL_SYMBOL(application, bss_start), &__APPL_SYMBOL(application, bss_end) },\
        { __APPL_SYMBOL(application, mmio_start), __APPL_SYMBOL(application, mmio_end) },\
        { __APPL_SYMBOL(application, mmio_2_start), __APPL_SYMBOL(application, mmio_2_end) },\
        { &__APPL_SYMBOL(application, shared_start), &__APPL_SYMBOL(application, shared_end) }\
    },\
    { &CMRX_VTABLE_SECTION_START(application), &CMRX_VTABLE_SECTION_STOP(application) }\
};\
__attribute__((constructor)) void __APPL_SYMBOL(application, inst_construct)(void)\
{\
    cmrx_posix_register_application(&__APPL_SYMBOL(application, instance));\
}
 
#define CMRX_THREAD_AUTOCREATE_CONSTRUCTOR(application, entrypoint, data, priority, core) \
const struct OS_thread_create_t __APPL_SYMBOL(application, thread_create_ ## entrypoint) = {\
    &__APPL_SYMBOL(application, instance),\
    entrypoint,\
    data,\
    priority,\
    core\
}; \
__attribute__((constructor)) void __APPL_SYMBOL(application, thread_create_ ## entrypoint ## _construct)(void)\
{\
    cmrx_posix_register_thread(&__APPL_SYMBOL(application, thread_create_ ## entrypoint));\
}