MSPM0L1306-Q1: GHS Compiler Start-Up Files

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#include <stdint.h>
#include "msp.h"

/* Linker variable that marks the top of the stack. */
extern unsigned long __ghsend_stack;

/*
 * Linker symbols for BSS section (uninitialized data)
 * These are used to clear BSS to zero during startup
 */
extern unsigned char __ghsbegin_bss[];
extern unsigned char __ghsend_bss[];

/* Main function prototype */
extern int main(void);

/*
 * Simple memset implementation for GHS
 * This avoids relying on the GHS library memset which may require
 * additional runtime initialization that is not performed in our
 * minimal startup code.
 */
void *memset(void *dest, int c, unsigned int n)
{
    unsigned char *d = (unsigned char *)dest;
    unsigned char val = (unsigned char)c;
    
    while (n > 0U) {
        *d++ = val;
        n--;
    }
    
    return dest;
}

/*
 * Simple memcpy implementation for GHS
 * This avoids relying on the GHS library memcpy which may require
 * additional runtime initialization.
 */
void *memcpy(void *dest, const void *src, unsigned int n)
{
    unsigned char *d = (unsigned char *)dest;
    const unsigned char *s = (const unsigned char *)src;
    
    while (n > 0U) {
        *d++ = *s++;
        n--;
    }
    
    return dest;
}

/* Forward declaration of the default fault handlers. */
void Default_Handler(void);
extern void Reset_Handler(void);

/* Processor Exceptions */
#pragma weak NMI_Handler = Default_Handler
#pragma weak HardFault_Handler = Default_Handler
#pragma weak SVC_Handler = Default_Handler
#pragma weak PendSV_Handler = Default_Handler
#pragma weak SysTick_Handler = Default_Handler

extern void NMI_Handler(void);
extern void HardFault_Handler(void);
extern void SVC_Handler(void);
extern void PendSV_Handler(void);
extern void SysTick_Handler(void);

/* Device Specific Interrupt Handlers */
#pragma weak SYSCTL_IRQHandler = Default_Handler
#pragma weak DEBUGSS_IRQHandler = Default_Handler
#pragma weak FLASHCTL_IRQHandler = Default_Handler
#pragma weak WWDT0_IRQHandler = Default_Handler
#pragma weak GPIOA_IRQHandler = Default_Handler
#pragma weak GPIOB_IRQHandler = Default_Handler
#pragma weak GPIOC_IRQHandler = Default_Handler
#pragma weak ADC0_SEQ0_IRQHandler = Default_Handler
#pragma weak ADC0_SEQ1_IRQHandler = Default_Handler
#pragma weak ADC0_SEQ2_IRQHandler = Default_Handler
#pragma weak ADC0_SEQ3_IRQHandler = Default_Handler
#pragma weak ADC0_DCOMP_IRQHandler = Default_Handler
#pragma weak ADC1_SEQ0_IRQHandler = Default_Handler
#pragma weak ADC1_SEQ1_IRQHandler = Default_Handler
#pragma weak ADC1_SEQ2_IRQHandler = Default_Handler
#pragma weak ADC1_SEQ3_IRQHandler = Default_Handler
#pragma weak ADC1_DCOMP_IRQHandler = Default_Handler
#pragma weak CANFD0_IRQHandler = Default_Handler
#pragma weak TIMA0_0_IRQHandler = Default_Handler
#pragma weak TIMG4_0_IRQHandler = Default_Handler
#pragma weak TIMG4_1_IRQHandler = Default_Handler
#pragma weak TIMG8_0_IRQHandler = Default_Handler
#pragma weak TIMG12_0_IRQHandler = Default_Handler
#pragma weak UC1_0_IRQHandler = Default_Handler
#pragma weak UC1_1_IRQHandler = Default_Handler
#pragma weak UC2_IRQHandler = Default_Handler
#pragma weak UC15_0_IRQHandler = Default_Handler
#pragma weak UC15_1_IRQHandler = Default_Handler
#pragma weak UC12_IRQHandler = Default_Handler
#pragma weak UC13_0_IRQHandler = Default_Handler
#pragma weak UC14_IRQHandler = Default_Handler
#pragma weak CANFD1_IRQHandler = Default_Handler
#pragma weak TIMA0_1_IRQHandler = Default_Handler
#pragma weak TIMG4_2_IRQHandler = Default_Handler
#pragma weak TIMG4_3_IRQHandler = Default_Handler
#pragma weak TIMG8_1_IRQHandler = Default_Handler
#pragma weak COMP0_IRQHandler = Default_Handler
#pragma weak COMP1_IRQHandler = Default_Handler
#pragma weak TRNG_IRQHandler = Default_Handler
#pragma weak AESADV_IRQHandler = Default_Handler
#pragma weak LFSS_IRQHandler = Default_Handler
#pragma weak DMA0_IRQHandler = Default_Handler
#pragma weak DMA1_IRQHandler = Default_Handler
#pragma weak I2S0_IRQHandler = Default_Handler
#pragma weak I2S1_IRQHandler = Default_Handler
#pragma weak QSPI_IRQHandler = Default_Handler
#pragma weak SHAW_IRQHandler = Default_Handler
#pragma weak PKA_IRQHandler = Default_Handler
#pragma weak UC13_1_IRQHandler = Default_Handler
#pragma weak UC13_2_IRQHandler = Default_Handler
#pragma weak UC13_3_IRQHandler = Default_Handler

extern void SYSCTL_IRQHandler(void);
extern void DEBUGSS_IRQHandler(void);
extern void FLASHCTL_IRQHandler(void);
extern void WWDT0_IRQHandler(void);
extern void GPIOA_IRQHandler(void);
extern void GPIOB_IRQHandler(void);
extern void GPIOC_IRQHandler(void);
extern void ADC0_SEQ0_IRQHandler(void);
extern void ADC0_SEQ1_IRQHandler(void);
extern void ADC0_SEQ2_IRQHandler(void);
extern void ADC0_SEQ3_IRQHandler(void);
extern void ADC0_DCOMP_IRQHandler(void);
extern void ADC1_SEQ0_IRQHandler(void);
extern void ADC1_SEQ1_IRQHandler(void);
extern void ADC1_SEQ2_IRQHandler(void);
extern void ADC1_SEQ3_IRQHandler(void);
extern void ADC1_DCOMP_IRQHandler(void);
extern void CANFD0_IRQHandler(void);
extern void TIMA0_0_IRQHandler(void);
extern void TIMG4_0_IRQHandler(void);
extern void TIMG4_1_IRQHandler(void);
extern void TIMG8_0_IRQHandler(void);
extern void TIMG12_0_IRQHandler(void);
extern void UC1_0_IRQHandler(void);
extern void UC1_1_IRQHandler(void);
extern void UC2_IRQHandler(void);
extern void UC15_0_IRQHandler(void);
extern void UC15_1_IRQHandler(void);
extern void UC12_IRQHandler(void);
extern void UC13_0_IRQHandler(void);
extern void UC14_IRQHandler(void);
extern void CANFD1_IRQHandler(void);
extern void TIMA0_1_IRQHandler(void);
extern void TIMG4_2_IRQHandler(void);
extern void TIMG4_3_IRQHandler(void);
extern void TIMG8_1_IRQHandler(void);
extern void COMP0_IRQHandler(void);
extern void COMP1_IRQHandler(void);
extern void TRNG_IRQHandler(void);
extern void AESADV_IRQHandler(void);
extern void LFSS_IRQHandler(void);
extern void DMA0_IRQHandler(void);
extern void DMA1_IRQHandler(void);
extern void I2S0_IRQHandler(void);
extern void I2S1_IRQHandler(void);
extern void QSPI_IRQHandler(void);
extern void SHAW_IRQHandler(void);
extern void PKA_IRQHandler(void);
extern void UC13_1_IRQHandler(void);
extern void UC13_2_IRQHandler(void);
extern void UC13_3_IRQHandler(void);

/* Interrupt vector table.  Note that the proper constructs must be placed on this to */
/* ensure that it ends up at physical address 0x0000.0000 or at the start of          */
/* the program if located at a start address other than 0.                            */
#pragma ghs section rodata=".intvecs"
void (*const interruptVectors[])(void) =
    {
        (void (*)(void))((uint32_t) &__ghsend_stack),
        /* The initial stack pointer */
        Reset_Handler,         /* The reset handler         */
        NMI_Handler,           /* The NMI handler           */
        HardFault_Handler,     /* The hard fault handler    */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        SVC_Handler,           /* SVCall handler            */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        PendSV_Handler,        /* The PendSV handler        */
        SysTick_Handler,       /* SysTick handler           */
        SYSCTL_IRQHandler,     /* SYSCTL interrupt handler  */
        DEBUGSS_IRQHandler,    /* DEBUGSS interrupt handler */
        FLASHCTL_IRQHandler,   /* FLASHCTL interrupt handler */
        WWDT0_IRQHandler,      /* WWDT0 interrupt handler   */
        0,                     /* Reserved                  */
        0,                     /* Reserved                  */
        GPIOA_IRQHandler,      /* GPIOA interrupt handler   */
        GPIOB_IRQHandler,      /* GPIOB interrupt handler   */
        GPIOC_IRQHandler,      /* GPIOC interrupt handler   */
        ADC0_SEQ0_IRQHandler,  /* ADC0 interrupt handler    */
        ADC0_SEQ1_IRQHandler,  /* ADC0 interrupt handler    */
        ADC0_SEQ2_IRQHandler,  /* ADC0 interrupt handler    */
        ADC0_SEQ3_IRQHandler,  /* ADC0 interrupt handler    */
        ADC0_DCOMP_IRQHandler, /* ADC0 interrupt handler    */
        ADC1_SEQ0_IRQHandler,  /* ADC1 interrupt handler    */
        ADC1_SEQ1_IRQHandler,  /* ADC1 interrupt handler    */
        ADC1_SEQ2_IRQHandler,  /* ADC1 interrupt handler    */
        ADC1_SEQ3_IRQHandler,  /* ADC1 interrupt handler    */
        ADC1_DCOMP_IRQHandler, /* ADC1 interrupt handler    */
        CANFD0_IRQHandler,     /* CANFD0 interrupt handler  */
        TIMA0_0_IRQHandler,    /* TIMA0_0 interrupt handler */
        TIMG4_0_IRQHandler,    /* TIMG4_0 interrupt handler */
        TIMG4_1_IRQHandler,    /* TIMG4_1 interrupt handler */
        TIMG8_0_IRQHandler,    /* TIMG8_0 interrupt handler */
        TIMG12_0_IRQHandler,   /* TIMG12_0 interrupt handler */
        UC1_0_IRQHandler,      /* UC1_0 interrupt handler   */
        UC1_1_IRQHandler,      /* UC1_1 interrupt handler   */
        UC2_IRQHandler,        /* UC2 interrupt handler     */
        UC15_0_IRQHandler,     /* UC15_0 interrupt handler  */
        UC15_1_IRQHandler,     /* UC15_1 interrupt handler  */
        UC12_IRQHandler,       /* UC12 interrupt handler    */
        UC13_0_IRQHandler,     /* UC13_0 interrupt handler  */
        UC14_IRQHandler,       /* UC14 interrupt handler    */
        CANFD1_IRQHandler,     /* CANFD1 interrupt handler  */
        TIMA0_1_IRQHandler,    /* TIMA0_1 interrupt handler */
        TIMG4_2_IRQHandler,    /* TIMG4_2 interrupt handler */
        TIMG4_3_IRQHandler,    /* TIMG4_3 interrupt handler */
        TIMG8_1_IRQHandler,    /* TIMG8_1 interrupt handler */
        COMP0_IRQHandler,      /* COMP0 interrupt handler   */
        COMP1_IRQHandler,      /* COMP1 interrupt handler   */
        TRNG_IRQHandler,       /* TRNG interrupt handler    */
        AESADV_IRQHandler,     /* AESADV interrupt handler  */
        LFSS_IRQHandler,       /* LFSS interrupt handler    */
        DMA0_IRQHandler,       /* DMA0 interrupt handler    */
        DMA1_IRQHandler,       /* DMA1 interrupt handler    */
        I2S0_IRQHandler,       /* I2S0 interrupt handler    */
        I2S1_IRQHandler,       /* I2S1 interrupt handler    */
        QSPI_IRQHandler,       /* QSPI interrupt handler    */
        SHAW_IRQHandler,       /* SHAW interrupt handler    */
        PKA_IRQHandler,        /* PKA interrupt handler     */
        UC13_1_IRQHandler,     /* UC13_1 interrupt handler  */
        UC13_2_IRQHandler,     /* UC13_2 interrupt handler  */
        UC13_3_IRQHandler,     /* UC13_3 interrupt handler  */

    };
#pragma ghs section rodata=default

/* This is the code that gets called when the processor first starts execution */
/* following a reset event.  Only the absolutely necessary set is performed,   */
/* after which the application supplied main() routine is called.  Any fancy   */
/* actions (such as making decisions based on the reset cause register, and    */
/* resetting the bits in that register) are left solely in the hands of the    */
/* application.                                                                */
void Reset_Handler(void)
{
    unsigned char *dst;
    unsigned char *end;

    /*
     * Step 1: Clear BSS section to zero
     * BSS contains uninitialized global and static variables
     */
    dst = __ghsbegin_bss;
    end = __ghsend_bss;
    while (dst < end) {
        *dst++ = 0;
    }

    /*
     * Step 2: Call main()
     * The application entry point
     *
     * Note: For this embedded application, initialized data (.data section)
     * is handled by the linker placing it directly in RAM or the debugger
     * loading it. If ROM-to-RAM copy is needed, add ROMCOPY directive to
     * linker script and use __ghscopy_data symbol.
     */
    (void)main();

    /*
     * Step 3: Loop forever if main() returns
     * In embedded systems, main() should never return
     */
    while (1) {
        /* Infinite loop */
    }
}

/* This is the code that gets called when the processor receives an unexpected  */
/* interrupt.  This simply enters an infinite loop, preserving the system state */
/* for examination by a debugger.                                               */
void Default_Handler(void)
{
    /* Enter an infinite loop. */
    while (1) {
    }
}