LXR qemu/tests/tcg/hello-i386.c

   1#include <asm/unistd.h>
   2
   3static inline void exit(int status)
   4{
   5  int __res;
   6  __asm__ volatile ("movl %%ecx,%%ebx\n"\
   7                    "int $0x80" \
   8                    :  "=a" (__res) : "0" (__NR_exit),"c" ((long)(status)));
   9}
  10
  11static inline int write(int fd, const char * buf, int len)
  12{
  13  int status;
  14  __asm__ volatile ("pushl %%ebx\n"\
  15                    "movl %%esi,%%ebx\n"\
  16                    "int $0x80\n" \
  17                    "popl %%ebx\n"\
  18                    : "=a" (status) \
  19                    : "0" (__NR_write),"S" ((long)(fd)),"c" ((long)(buf)),"d" ((long)(len)));
  20  return status;
  21}
  22
  23void _start(void)
  24{
  25    write(1, "Hello World\n", 12);
  26    exit(0);
  27}
  28