69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
#include <stdio.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include <time.h>
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#include "toy.h"
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int32_t get2compl(uint16_t value)
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{
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int32_t sign_value = value;
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if(value>32767)
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{
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value=(~value)+1;
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sign_value = value*(-1);
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}
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return sign_value;
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}
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//assumes little endian
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//stackoverflow.com/questions/111928
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void fprintBits(size_t const size, void const * const ptr, FILE *file_pointer)
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{
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//Beispiel:
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//printBits(sizeof(*ram), ram);
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unsigned char *b = (unsigned char*) ptr;
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unsigned char byte;
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int i, j;
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for (i=size-1;i>=0;i--)
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{
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for (j=7;j>=0;j--)
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{
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byte = (b[i] >> j) & 1;
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fprintf(file_pointer,"%u", byte);
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}
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}
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fputs("\n",file_pointer);
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}
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void makeHexDump(bool base_2, uint16_t ram[])
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{
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time_t timer;
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struct tm *tm_timer;
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char timestamp[32];
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FILE *fp;
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time(&timer);
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tm_timer=localtime(&timer);
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if(strftime(timestamp,sizeof(timestamp),"coredump_%d_%b_%y_%H-%M-%S.toy",tm_timer)==0)
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{
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fprintf(stderr,"Buffer for system-time fault! hexdump canceled\n");
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return;
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}
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if(NULL==(fp=fopen(timestamp,"w")))
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{
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fprintf(stderr,"File system access failed, hexdump canceled\n");
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return;
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}
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if(base_2)
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{
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for(int i=0; i<RAM_SIZE; i++) fprintBits(sizeof(uint16_t),ram+i,fp);
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}
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else
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{
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for(int i=0; i<RAM_SIZE; i++) fprintf(fp,"%X\n",ram[i]);
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}
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fclose(fp);
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}
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