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/* This file has not been tested for ages. */
#include "hfload.h"
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
void
read_struct(void *s, ssize_t size)
{
ssize_t real;
real = read(0, s, size);
if (size != real) {
printf("trying to read %d, got %d; dying.\n", size, real);
exit(1);
}
file_offset += real;
}
void
seek_forward(int offset) {
int dummy, i;
ssize_t real;
if (offset % 4 != 0) {
printf("Can't seek by a non-word aligned amount\n");
exit(1);
}
if (offset < file_offset) {
printf("can't seek backwards\n");
exit(1);
}
for (; offset < file_offset; file_offset += 4) {
real = read(0, &dummy, 4);
if (real != 4) {
printf("error seeking forward at offset %d\n", file_offset);
exit(1);
}
}
}
void
copy_to_region(int *addr, ssize_t size) {
int i, dummy, real;
printf("copying %x bytes from file offset %x to address %08x\n",
size, file_offset, addr);
#ifdef FAKE_COPYING
for (i = 0; i < size; i += 4) {
read_struct(&dummy, sizeof(int));
}
#else
real = read(0, addr, size);
if (real != size) {
printf("failed to read %d bytes, exiting\n");
exit(1);
}
file_offset += real;
#endif
}
void
init_read() {
}
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