/*
 * Copyright (C) 2015 Eistec AB
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License v2.1. See the file LICENSE in the top level directory for more
 * details.
 */

/**
 * @ingroup         cpu_k60
 * @{
 *
 * @file
 *
 * @brief Interrupt vector for K60 MCU.
 *
 * @author Joakim Gebart <joakim.gebart@eistec.se>
 *
 * @note It is not necessary to modify this file to define custom interrupt
 * service routines. All symbols are defined weak, it is only necessary to
 * define a function with the same name in another file to override the default
 * interrupt handlers.
 */

/**
 * @name Interrupt vector definition
 * @{
 */

#include "cpu.h"
#include "fault_handlers.h"
#include "wdog.h"

extern void *_estack[];
extern void *_sstack[];

typedef void (*ISR_func)(void);


/**
 * @brief Unconditional jump to isr_unhandled()
 *
 * This function is only necessary since we can not declare weak aliases to
 * functions outside the translation unit (.c-file). The default isr_unhandled()
 * is defined in kinetis_common/fault_handlers.c.
 */
void isr_default_handler(void) __attribute__((naked));

void isr_default_handler(void)
{
    __ASM volatile ("b isr_unhandled\n");
}

/**
 * @brief Early reset handler used to instrument the stack before it becomes in use.
 *
 * This function will fill the interrupt context-stack with canary values so
 * that it can be checked to measure stack usage, similar to CREATE_STACKTEST in
 * @ref thread_create
 */
void pre_reset_handler(void);

/** @brief Interrupt stack canary value
 *
 * @note 0xe7fe is the ARM Thumb machine code equivalent of asm("bl #-2\n") or
 * 'while (1);', i.e. an infinite loop.
 */
#define STACK_CANARY_WORD 0xE7FEE7FEu

void pre_reset_handler(void)
{
    /*
     * Important: Keep this function as simple as possible, we must not use any
     * stack space or we will crash, since we will overwrite all of the stack.
     */
    /* Disable watchdog first, it is necessary to do within 256 cycles.
     * After this we will completely overwrite the stack so all necessary
     * variables must be stored in registers or as immediate values in the
     * machine code. */
    wdog_disable();
    /*
     * The register keyword suggests to the compiler to place the variable in a
     * register instead of on the stack. Using the register keyword is not a
     * guarantee that the variable will be placed in a register. However, this
     * function has been verified manually by disassembling the GCC output to
     * ensure no stack is being used until after the write loop is finished.
     */
    register uint32_t *p;

    /* Fill stack space with canary values */
    for (p = (uint32_t *)_sstack; p < (uint32_t *)_estack; ++p) {
        *p = STACK_CANARY_WORD;
    }

    /* Now launch the real reset handler. */
    __ASM volatile("b reset_handler\n");

    /* reset_handler should never return */
    while (1);
}

#define ISR_VECTOR_SECTION __attribute__ ((used,section(".vector_table")))

#define UNHANDLED_ALIAS __attribute__((weak, alias("isr_default_handler")));

/* ARM Cortex defined interrupt vectors */
/**
 * @brief Default reset handler.
 */
void reset_handler(void) __attribute__((naked));
void isr_nmi(void) UNHANDLED_ALIAS;
void isr_hard_fault(void) UNHANDLED_ALIAS;
void isr_mem_manage(void) UNHANDLED_ALIAS;
void isr_bus_fault(void) UNHANDLED_ALIAS;
void isr_usage_fault(void) UNHANDLED_ALIAS;
void isr_reserved(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
/* void isr_reserved(void) UNHANDLED_ALIAS; */
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_svc(void) UNHANDLED_ALIAS;
void isr_debug_mon(void) UNHANDLED_ALIAS;
/* void _isr_reserved(void) UNHANDLED_ALIAS; */
void isr_pendsv(void) UNHANDLED_ALIAS;
void isr_systick(void) UNHANDLED_ALIAS;

/* device-specific (freescale) defined interrupt vectors */
void isr_dma0_complete(void) UNHANDLED_ALIAS;
void isr_dma1_complete(void) UNHANDLED_ALIAS;
void isr_dma2_complete(void) UNHANDLED_ALIAS;
void isr_dma3_complete(void) UNHANDLED_ALIAS;
void isr_dma4_complete(void) UNHANDLED_ALIAS;
void isr_dma5_complete(void) UNHANDLED_ALIAS;
void isr_dma6_complete(void) UNHANDLED_ALIAS;
void isr_dma7_complete(void) UNHANDLED_ALIAS;
void isr_dma8_complete(void) UNHANDLED_ALIAS;
void isr_dma9_complete(void) UNHANDLED_ALIAS;
void isr_dma10_complete(void) UNHANDLED_ALIAS;
void isr_dma11_complete(void) UNHANDLED_ALIAS;
void isr_dma12_complete(void) UNHANDLED_ALIAS;
void isr_dma13_complete(void) UNHANDLED_ALIAS;
void isr_dma14_complete(void) UNHANDLED_ALIAS;
void isr_dma15_complete(void) UNHANDLED_ALIAS;
void isr_dma_error(void) UNHANDLED_ALIAS;
void isr_mcm(void) UNHANDLED_ALIAS;
void isr_flash_command_complete(void) UNHANDLED_ALIAS;
void isr_flash_read_collision(void) UNHANDLED_ALIAS;
void isr_low_voltage(void) UNHANDLED_ALIAS;
void isr_llwu(void) UNHANDLED_ALIAS;
void isr_watchdog(void) UNHANDLED_ALIAS;
void isr_random_number_generator(void) UNHANDLED_ALIAS;
void isr_i2c0(void) UNHANDLED_ALIAS;
void isr_i2c1(void) UNHANDLED_ALIAS;
void isr_spi0(void) UNHANDLED_ALIAS;
void isr_spi1(void) UNHANDLED_ALIAS;
void isr_spi2(void) UNHANDLED_ALIAS;
void isr_can0_ored_msg_buffer(void) UNHANDLED_ALIAS;
void isr_can0_bus_off(void) UNHANDLED_ALIAS;
void isr_can0_error(void) UNHANDLED_ALIAS;
void isr_can0_tx_warn(void) UNHANDLED_ALIAS;
void isr_can0_rx_warn(void) UNHANDLED_ALIAS;
void isr_can0_wake_up(void) UNHANDLED_ALIAS;
void isr_i2s0_tx(void) UNHANDLED_ALIAS;
void isr_i2s0_rx(void) UNHANDLED_ALIAS;
void isr_can1_ored_msg_buffer(void) UNHANDLED_ALIAS;
void isr_can1_bus_off(void) UNHANDLED_ALIAS;
void isr_can1_error(void) UNHANDLED_ALIAS;
void isr_can1_tx_warn(void) UNHANDLED_ALIAS;
void isr_can1_rx_warn(void) UNHANDLED_ALIAS;
void isr_can1_wake_up(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_uart0_lon(void) UNHANDLED_ALIAS;
void isr_uart0_status(void) UNHANDLED_ALIAS;
void isr_uart0_error(void) UNHANDLED_ALIAS;
void isr_uart1_status(void) UNHANDLED_ALIAS;
void isr_uart1_error(void) UNHANDLED_ALIAS;
void isr_uart2_status(void) UNHANDLED_ALIAS;
void isr_uart2_error(void) UNHANDLED_ALIAS;
void isr_uart3_status(void) UNHANDLED_ALIAS;
void isr_uart3_error(void) UNHANDLED_ALIAS;
void isr_uart4_status(void) UNHANDLED_ALIAS;
void isr_uart4_error(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_adc0(void) UNHANDLED_ALIAS;
void isr_adc1(void) UNHANDLED_ALIAS;
void isr_cmp0(void) UNHANDLED_ALIAS;
void isr_cmp1(void) UNHANDLED_ALIAS;
void isr_cmp2(void) UNHANDLED_ALIAS;
void isr_ftm0(void) UNHANDLED_ALIAS;
void isr_ftm1(void) UNHANDLED_ALIAS;
void isr_ftm2(void) UNHANDLED_ALIAS;
void isr_cmt(void) UNHANDLED_ALIAS;
void isr_rtc_alarm(void) UNHANDLED_ALIAS;
void isr_rtc_seconds(void) UNHANDLED_ALIAS;
void isr_pit0(void) UNHANDLED_ALIAS;
void isr_pit1(void) UNHANDLED_ALIAS;
void isr_pit2(void) UNHANDLED_ALIAS;
void isr_pit3(void) UNHANDLED_ALIAS;
void isr_pdb(void) UNHANDLED_ALIAS;
void isr_usb_otg(void) UNHANDLED_ALIAS;
void isr_usb_charger_detect(void) UNHANDLED_ALIAS;
void isr_enet_1588_timer(void) UNHANDLED_ALIAS;
void isr_enet_tx(void) UNHANDLED_ALIAS;
void isr_enet_rx(void) UNHANDLED_ALIAS;
void isr_enet_error_misc(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_sdhc(void) UNHANDLED_ALIAS;
void isr_dac0(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_tsi(void) UNHANDLED_ALIAS;
void isr_mcg(void) UNHANDLED_ALIAS;
void isr_lptmr0(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_porta_pin_detect(void) UNHANDLED_ALIAS;
void isr_portb_pin_detect(void) UNHANDLED_ALIAS;
void isr_portc_pin_detect(void) UNHANDLED_ALIAS;
void isr_portd_pin_detect(void) UNHANDLED_ALIAS;
void isr_porte_pin_detect(void) UNHANDLED_ALIAS;
/* void isr_reserved(void) UNHANDLED_ALIAS; */
/* void isr_reserved(void) UNHANDLED_ALIAS; */
void isr_software(void) UNHANDLED_ALIAS;

/**
 * @brief Interrupt vector definition
 */
const ISR_func isr_vector[256] ISR_VECTOR_SECTION = {
    /* ARM Cortex defined interrupt vectors */
    (ISR_func)_estack,
    pre_reset_handler,
    isr_nmi,
    isr_hard_fault,
    isr_mem_manage,
    isr_bus_fault,
    isr_usage_fault,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_svc,
    isr_debug_mon,
    isr_reserved,
    isr_pendsv,
    isr_systick,

    /* Device-specific (Freescale defined) interrupt vectors */
    isr_dma0_complete,
    isr_dma1_complete,
    isr_dma2_complete,
    isr_dma3_complete,
    isr_dma4_complete,
    isr_dma5_complete,
    isr_dma6_complete,
    isr_dma7_complete,
    isr_dma8_complete,
    isr_dma9_complete,
    isr_dma10_complete,
    isr_dma11_complete,
    isr_dma12_complete,
    isr_dma13_complete,
    isr_dma14_complete,
    isr_dma15_complete,
    isr_dma_error,
    isr_mcm,
    isr_flash_command_complete,
    isr_flash_read_collision,
    isr_low_voltage,
    isr_llwu,
    isr_watchdog,
    isr_random_number_generator,
    isr_i2c0,
    isr_i2c1,
    isr_spi0,
    isr_spi1,
    isr_spi2,
    isr_can0_ored_msg_buffer,
    isr_can0_bus_off,
    isr_can0_error,
    isr_can0_tx_warn,
    isr_can0_rx_warn,
    isr_can0_wake_up,
    isr_i2s0_tx,
    isr_i2s0_rx,
    isr_can1_ored_msg_buffer,
    isr_can1_bus_off,
    isr_can1_error,
    isr_can1_tx_warn,
    isr_can1_rx_warn,
    isr_can1_wake_up,
    isr_reserved,
    isr_uart0_lon,
    isr_uart0_status,
    isr_uart0_error,
    isr_uart1_status,
    isr_uart1_error,
    isr_uart2_status,
    isr_uart2_error,
    isr_uart3_status,
    isr_uart3_error,
    isr_uart4_status,
    isr_uart4_error,
    isr_reserved,
    isr_reserved,
    isr_adc0,
    isr_adc1,
    isr_cmp0,
    isr_cmp1,
    isr_cmp2,
    isr_ftm0,
    isr_ftm1,
    isr_ftm2,
    isr_cmt,
    isr_rtc_alarm,
    isr_rtc_seconds,
    isr_pit0,
    isr_pit1,
    isr_pit2,
    isr_pit3,
    isr_pdb,
    isr_usb_otg,
    isr_usb_charger_detect,
    isr_enet_1588_timer,
    isr_enet_tx,
    isr_enet_rx,
    isr_enet_error_misc,
    isr_reserved,
    isr_sdhc,
    isr_dac0,
    isr_reserved,
    isr_tsi,
    isr_mcg,
    isr_lptmr0,
    isr_reserved,
    isr_porta_pin_detect,
    isr_portb_pin_detect,
    isr_portc_pin_detect,
    isr_portd_pin_detect,
    isr_porte_pin_detect,
    isr_reserved,
    isr_reserved,
    isr_software, /* Vector 110 */
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved,
    isr_reserved /* vector 255 */
};

/** @} */

/** @} */