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[/] [minsoc/] [trunk/] [sw/] [support/] [support.c] - Diff between revs 53 and 80

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Rev 53 Rev 80
/* Support */
/* Support */
 
 
#ifndef OR32
#ifndef OR32
#include <sys/time.h>
#include <sys/time.h>
#endif
#endif
 
 
#include "or1200.h"
#include "or1200.h"
#include "support.h"
#include "support.h"
#include "int.h"
#include "int.h"
 
 
#ifdef UART_PRINTF
#ifdef UART_PRINTF
#include "../drivers/uart.h"
#include <uart.h>
#endif
#endif
 
 
#if OR32
#if OR32
void int_main();
void int_main();
 
 
void ext_except()
void ext_except()
{
{
        int_main();
        int_main();
}
}
 
 
/* Start function, called by reset exception handler.  */
/* Start function, called by reset exception handler.  */
void reset ()
void reset ()
{
{
        int i = main();
        int i = main();
        or32_exit (i);
        or32_exit (i);
}
}
 
 
/* return value by making a syscall */
/* return value by making a syscall */
void or32_exit (int i)
void or32_exit (int i)
{
{
        asm("l.add r3,r0,%0": : "r" (i));
        asm("l.add r3,r0,%0": : "r" (i));
        asm("l.nop %0": :"K" (NOP_EXIT));
        asm("l.nop %0": :"K" (NOP_EXIT));
        while (1);
        while (1);
}
}
 
 
#ifdef UART_PRINTF
#ifdef UART_PRINTF
 
 
static int uart_init_done = 0;
static int uart_init_done = 0;
 
 
#define PRINTFBUFFER_SIZE 512
#define PRINTFBUFFER_SIZE 512
char PRINTFBUFFER[PRINTFBUFFER_SIZE]; // Declare a global printf buffer
char PRINTFBUFFER[PRINTFBUFFER_SIZE]; // Declare a global printf buffer
 
 
void minsoc_printf(const char *fmt, ...)
void minsoc_printf(const char *fmt, ...)
{
{
        // init uart if not done already
        // init uart if not done already
        if (!uart_init_done)
        if (!uart_init_done)
        {
        {
                uart_init();
                uart_init();
                uart_init_done = 1;
                uart_init_done = 1;
        }
        }
 
 
        va_list args;
        va_list args;
        va_start(args, fmt);
        va_start(args, fmt);
 
 
        //int str_l = vsnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
        //int str_l = vsnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
        int str_l = vfnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
        int str_l = vfnprintf(PRINTFBUFFER, PRINTFBUFFER_SIZE, fmt, args);
 
 
        if (!str_l) return; // no length string - just return
        if (!str_l) return; // no length string - just return
 
 
        int c=0;
        int c=0;
        // now print each char via the UART
        // now print each char via the UART
        while (c < str_l)
        while (c < str_l)
                uart_putc(PRINTFBUFFER[c++]);
                uart_putc(PRINTFBUFFER[c++]);
 
 
        va_end(args);
        va_end(args);
}
}
 
 
#else
#else
/* activate printf support in simulator */
/* activate printf support in simulator */
void minsoc_printf(const char *fmt, ...)
void minsoc_printf(const char *fmt, ...)
{
{
        va_list args;
        va_list args;
        va_start(args, fmt);
        va_start(args, fmt);
        __asm__ __volatile__ ("  l.addi\tr3,%1,0\n \
        __asm__ __volatile__ ("  l.addi\tr3,%1,0\n \
                        l.addi\tr4,%2,0\n \
                        l.addi\tr4,%2,0\n \
                        l.nop %0": :"K" (NOP_PRINTF), "r" (fmt), "r"  (args));
                        l.nop %0": :"K" (NOP_PRINTF), "r" (fmt), "r"  (args));
}
}
 
 
#endif
#endif
 
 
 
 
 
 
 
 
 
 
/* print long */
/* print long */
void report(unsigned long value)
void report(unsigned long value)
{
{
        asm("l.addi\tr3,%0,0": :"r" (value));
        asm("l.addi\tr3,%0,0": :"r" (value));
        asm("l.nop %0": :"K" (NOP_REPORT));
        asm("l.nop %0": :"K" (NOP_REPORT));
}
}
 
 
/* just to satisfy linker */
/* just to satisfy linker */
void __main()
void __main()
{
{
}
}
 
 
/* start_TIMER                    */
/* start_TIMER                    */
void start_timer(int x)
void start_timer(int x)
{
{
}
}
 
 
/* For writing into SPR. */
/* For writing into SPR. */
void mtspr(unsigned long spr, unsigned long value)
void mtspr(unsigned long spr, unsigned long value)
{
{
        asm("l.mtspr\t\t%0,%1,0": : "r" (spr), "r" (value));
        asm("l.mtspr\t\t%0,%1,0": : "r" (spr), "r" (value));
}
}
 
 
/* For reading SPR. */
/* For reading SPR. */
unsigned long mfspr(unsigned long spr)
unsigned long mfspr(unsigned long spr)
{
{
        unsigned long value;
        unsigned long value;
        asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));
        asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));
        return value;
        return value;
}
}
 
 
#else
#else
void report(unsigned long value)
void report(unsigned long value)
{
{
        printf("report(0x%x);\n", (unsigned) value);
        printf("report(0x%x);\n", (unsigned) value);
}
}
 
 
#endif
#endif
 
 

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