Viewing file:  piggyback.c (1.46 KB) -rw-r--r--
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/*
* BK Id: SCCS/s.piggyback.c 1.7 05/18/01 15:17:23 cort
*/
#include <stdio.h>
#include <unistd.h>
extern long ce_exec_config[];
int main(int argc, char *argv[])
{
int i, cnt, pos, len;
unsigned int cksum, val;
unsigned char *lp;
unsigned char buf[8192];
if (argc != 2)
{
fprintf(stderr, "usage: %s name <in-file >out-file\n",
argv[0]);
exit(1);
}
fprintf(stdout, "#\n");
fprintf(stdout, "# Miscellaneous data structures:\n");
fprintf(stdout, "# WARNING - this file is automatically generated!\n");
fprintf(stdout, "#\n");
fprintf(stdout, "\n");
fprintf(stdout, "\t.data\n");
fprintf(stdout, "\t.globl %s_data\n", argv[1]);
fprintf(stdout, "%s_data:\n", argv[1]);
pos = 0;
cksum = 0;
while ((len = read(0, buf, sizeof(buf))) > 0)
{
cnt = 0;
lp = (unsigned char *)buf;
len = (len + 3) & ~3; /* Round up to longwords */
for (i = 0; i < len; i += 4)
{
if (cnt == 0)
{
fprintf(stdout, "\t.long\t");
}
fprintf(stdout, "0x%02X%02X%02X%02X", lp[0], lp[1], lp[2], lp[3]);
val = *(unsigned long *)lp;
cksum ^= val;
lp += 4;
if (++cnt == 4)
{
cnt = 0;
fprintf(stdout, " # %x \n", pos+i-12);
fflush(stdout);
} else
{
fprintf(stdout, ",");
}
}
if (cnt)
{
fprintf(stdout, "0\n");
}
pos += len;
}
fprintf(stdout, "\t.globl %s_len\n", argv[1]);
fprintf(stdout, "%s_len:\t.long\t0x%x\n", argv[1], pos);
fflush(stdout);
fclose(stdout);
fprintf(stderr, "cksum = %x\n", cksum);
exit(0);
}
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