xref: /illumos-kvm-cmd/tests/hello-i386.c (revision 68396ea9)
1 #include <asm/unistd.h>
2 
exit(int status)3 static inline volatile 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 
write(int fd,const char * buf,int len)11 static 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 }
21 
_start(void)22 void _start(void)
23 {
24     write(1, "Hello World\n", 12);
25     exit(0);
26 }
27