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// From https://github.com/athre0z/disas-bench
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <time.h>
int read_file_data(uint8_t** buf, const char* filename, size_t file_offset, size_t bin_len)
{
FILE* f = fopen(filename, "rb");
if (!f) return 0;
// Seek to code section
if (fseek(f, (long)file_offset, SEEK_SET))
{
fclose(f);
return 0;
}
uint8_t* code = malloc(bin_len);
if (!code)
{
fclose(f);
return 0;
}
if (fread(code, 1, bin_len, f) != bin_len)
{
fclose(f);
free(code);
return 0;
}
*buf = code;
return 1;
}
int read_file(int argc, char *argv[], uint8_t **buf, size_t *bin_len, size_t *loop_count)
{
if (argc != 5)
{
fputs("Expected args: <loop-count> <code-offset> <code-len> <filename>\n", stderr);
return 0;
}
*loop_count = (size_t)strtoull(argv[1], NULL, 0);
size_t file_offset = (size_t)strtoull(argv[2], NULL, 0);
*bin_len = (size_t)strtoull(argv[3], NULL, 0);
const char *filename = argv[4];
if (!read_file_data(buf, filename, file_offset, *bin_len))
{
fprintf(stderr, "Couldn't read `%s`\n", filename);
return 0;
}
return 1;
}
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