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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [sound/] [hex2hex.h] - Blame information for rev 1626

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Line No. Rev Author Line
1 1626 jcastillo
/*
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 * This file is a part of configure.c
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 *
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 * hex2hex reads an input file in Intel HEX format and produces
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 * an (unsigned char) array which contains the bytes and writes it to the
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 * output file using C syntax
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 */
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#define MAX_SIZE (256*1024)
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#define ABANDON(why) { \
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                fprintf(stderr, "%s: " why "\n", source); \
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                return 0; \
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                }
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int loadhex(FILE *inf, unsigned char *buf, char *source)
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{
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        int l=0, c, i;
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        while ((c=getc(inf))!=EOF)
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        {
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                if (c == ':')   /* Sync with beginning of line */
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                {
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                        int n, check;
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                        unsigned char sum;
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                        int addr;
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                        int linetype;
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                        if (fscanf(inf, "%02x", &n) != 1)
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                           ABANDON("File format error");
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                        sum = n;
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                        if (fscanf(inf, "%04x", &addr) != 1)
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                           ABANDON("File format error");
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                        sum += addr/256;
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                        sum += addr%256;
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                        if (fscanf(inf, "%02x", &linetype) != 1)
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                           ABANDON("File format error");
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                        sum += linetype;
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                        if (linetype != 0)
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                           continue;
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                        for (i=0;i<n;i++)
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                        {
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                                if (fscanf(inf, "%02x", &c) != 1)
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                                   ABANDON("File format error");
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                                if (addr >= MAX_SIZE)
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                                   ABANDON("File too large");
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                                buf[addr++] = c;
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                                if (addr > l)
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                                   l = addr;
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                                sum += c;
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                        }
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                        if (fscanf(inf, "%02x", &check) != 1)
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                           ABANDON("File format error");
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                        sum = ~sum + 1;
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                        if (check != sum)
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                           ABANDON("Line checksum error");
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                }
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        }
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        return l;
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}
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int hex2hex(char *source, char *target, char *varline)
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{
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        FILE *inf, *outf;
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        int i,l;
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        unsigned char buf[MAX_SIZE];
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        if ((inf=fopen(source, "r"))==NULL)
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        {
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                perror(source);
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                return 0;
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        }
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        if ((outf=fopen(target, "w"))==NULL)
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        {
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                perror(target);
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                fclose(inf);
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                return 0;
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        }
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        l=loadhex(inf, buf, source);
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        if (l<=0)
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        {
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           fclose(inf);
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           fclose(outf);
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           return l;
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        }
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        fprintf(outf, "/*\n *\t Computer generated file. Do not edit.\n */\n");
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        fprintf(outf, "static int %s_len = %d;\n", varline, l);
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        fprintf(outf, "static unsigned char %s[] = {\n", varline);
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        for (i=0;i<l;i++)
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        {
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                if (i) fprintf(outf, ",");
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                if (i && !(i % 16)) fprintf(outf, "\n");
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                fprintf(outf, "0x%02x", buf[i]);
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        }
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        fprintf(outf, "\n};\n\n");
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        fclose(inf);
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        fclose(outf);
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        return 1;
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}

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