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build: Use compile_time_request system for init, tasks, and shutdown

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Avoid using linker magic to define the init, task, and shutdown
functions.  Instead, use the compile_time_request system.  This
simplifies the build and produces more efficient code.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-05-26 09:14:26 -04:00
parent ca9756413f
commit a82e949c00
26 changed files with 82 additions and 127 deletions
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40
src/sched.c
View file

@ -1,6 +1,6 @@
// Basic scheduling functions and startup/shutdown code.
//
// Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2016,2017 Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.
@ -167,7 +167,7 @@ sched_timer_dispatch(void)
}
// Shutdown all user timers on an emergency stop.
static void
void
sched_timer_shutdown(void)
{
timer_list = &deleted_timer;
@ -209,11 +209,8 @@ run_shutdown(void)
{
uint32_t cur = timer_read_time();
shutdown_status = 2;
struct callback_handler *p;
foreachdecl(p, shutdownfuncs) {
void (*func)(void) = READP(p->func);
func();
}
extern void ctr_run_shutdownfuncs(void);
ctr_run_shutdownfuncs();
shutdown_status = 1;
irq_enable();
@ -252,39 +249,20 @@ sched_shutdown(uint_fast8_t reason)
* Startup and background task processing
****************************************************************/
// Invoke all init functions (as declared by DECL_INIT)
static void
run_init(void)
{
struct callback_handler *p;
foreachdecl(p, initfuncs) {
void (*func)(void) = READP(p->func);
func();
}
}
// Invoke all background task functions (as declared by DECL_TASK)
static void
run_task(void)
{
struct callback_handler *p;
foreachdecl(p, taskfuncs) {
irq_poll();
void (*func)(void) = READP(p->func);
func();
}
}
// Auto-generated code in out/compile_time_requests.c
extern void ctr_run_initfuncs(void);
extern void ctr_run_taskfuncs(void);
// Main loop of program
void
sched_main(void)
{
run_init();
ctr_run_initfuncs();
int ret = setjmp(shutdown_jmp);
if (ret)
run_shutdown();
for (;;)
run_task();
ctr_run_taskfuncs();
}