27 lines
576 B
C
27 lines
576 B
C
|
#include <asm/unistd.h>
|
||
|
|
|
||
|
|
extern inline volatile void exit(int status)
|
||
|
|
{
|
||
|
|
int __res;
|
||
|
|
__asm__ volatile ("movl %%ecx,%%ebx\n"\
|
||
|
|
"int $0x80" \
|
||
|
|
: "=a" (__res) : "0" (__NR_exit),"c" ((long)(status)));
|
||
|
|
}
|
||
|
|
|
||
|
|
extern inline int write(int fd, const char * buf, int len)
|
||
|
|
{
|
||
|
|
int status;
|
||
|
|
__asm__ volatile ("pushl %%ebx\n"\
|
||
|
|
"movl %%esi,%%ebx\n"\
|
||
|
|
"int $0x80\n" \
|
||
|
|
"popl %%ebx\n"\
|
||
|
|
: "=a" (status) \
|
||
|
|
: "0" (__NR_write),"S" ((long)(fd)),"c" ((long)(buf)),"d" ((long)(len)));
|
||
|
|
}
|
||
|
|
|
||
|
|
void _startup(void)
|
||
|
|
{
|
||
|
|
write(1, "Hello World\n", 12);
|
||
|
|
exit(0);
|
||
|
|
}
|