rusefi-1/firmware/controllers/global_shared.h

41 lines
1.3 KiB
C

/*
* @file global_shared.h
*
* part of global.h which is shared between firmware and simulator
* See also common_headers.h
*
* Dec 25, 2018
* @author Andrey Belomutskiy, (c) 2012-2020
*/
#pragma once
/**
* The following obscurantism is a hack to reduce stack usage, maybe even a questionable performance
* optimization.
*
* Of note is that interrupts are NOT serviced on the stack of the thread that was running when the
* interrupt occurred. The only thing that happens on that thread's stack is that its registers are
* pushed (by hardware) when an interrupt occurs, just before swapping the stack pointer out for the
* main stack (currently 0x400=1024 bytes), where the ISR actually runs.
* see also __main_stack_size__
* see also __process_stack_size__
*
* see also http://www.chibios.org/dokuwiki/doku.php?id=chibios:kb:stacks
*
* In the firmware we are using 'extern *Engine' - in the firmware Engine is a signleton
*
* On the other hand, in order to have a meaningful unit test we are passing Engine * engine as a parameter
*/
#include "global.h"
#define EXPECTED_REMAINING_STACK 128
/*
* Stack debugging
*/
EXTERNC int getRemainingStack(thread_t *otp);
int CountFreeStackSpace(const void* wabase);
void validateStack(const char*msg, obd_code_e code, int stackUnusedSize);