programs/libc/crt0.c

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6
   7 int main(int argc, char **argv);
   8
   9 struct FILE
  10 {
  11         int fd;
  12         int append;
  13         int error;
  14 };
  15
  16 void _start(int envc, char **envv, int argc, char **argv)
  17 {
  18         environ = malloc(sizeof(char*) * (envc + 1));
  19         memcpy(environ, envv, sizeof(char*) * (envc + 1));
  20
  21         stdin = malloc(sizeof(struct FILE));
  22         memset(stdin, 0, sizeof(struct FILE));
  23         stdout = malloc(sizeof(struct FILE));
  24         memset(stdout, 0, sizeof(struct FILE));
  25         stdout->fd = 1;
  26         stderr = malloc(sizeof(struct FILE));
  27         memset(stderr, 0, sizeof(struct FILE));
  28         stderr->fd = 2;
  29
  30         main(argc, argv);
  31         exit(0);
  32 }