git.zerfleddert.de Git - raggedstone/blob - dhwk/userland/dump_register.c

   1 #include <stdio.h>
   2 #include <sys/io.h>
   3 #include <errno.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6
   7 #define die(x) \
   8 { \
   9         char buf[BUFSIZ]; \
  10                 snprintf(buf, sizeof(buf), \
  11                                 "%s: %d: %s: %s", \
  12                                 __FILE__, (int) __LINE__, __FUNCTION__,  x); \
  13                 perror(buf); \
  14                 exit(EXIT_FAILURE); \
  15 }
  16
  17 int
  18 main(void)
  19 {
  20         int ret;
  21         unsigned int word;
  22
  23         ret = ioperm(0xe800,8,1);
  24         if (ret < 0) {
  25                 die("ioperm");
  26         }
  27         word = inw(0xe804);
  28         printf("0x%04x\n", 0x0 | word);
  29
  30         word = inw(0xe806);
  31         printf("0x%04x\n", 0x0 | word);
  32
  33         ret = ioperm(0xe800,8,0);
  34         if (ret < 0) {
  35                 die("ioperm");
  36         }
  37
  38         return(EXIT_SUCCESS);
  39 }
  40