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#include "kernel/syscalls.h"
extern char **environ;
//struct _reent *_impure_ptr;
// generic syscall interface!
int syscall(int call, int p1, int p2, int p3)
{
int ebx; // will hold return value;
asm("pusha");
// select syscall
asm("mov %0, %%eax"::"m"(call));
// pass params
asm("mov %0,%%edx"::"m"(p1));
asm("mov %0,%%ecx"::"m"(p2));
asm("mov %0,%%ebx"::"m"(p3));
// interrrupt
asm("int $0x80");
// get return value
asm("mov %%ebx, %0": "=b" (ebx));
asm("popa");
return ebx;
}
// fool os custom
int readdir(const char *name,fs_dirent *dirs,int max)
{
return syscall(SYSCALL_READDIR,name,dirs,max);
}
int has_data_waiting()
{
return syscall(SYSCALL_HAS_DATA,0,0,0);
}
int fool_tune(int v1, int v2, int v3)
{
return syscall(SYSCALL_TUNE,v1,v2,v3);
}
void _exit(int ret)
{
_exit2(ret,environ);
}
void _exit2(int ret,char **environ)
{
return syscall(SYSCALL_EXIT,ret,environ,0);
}
//required by newlibc
int close(int file)
{
return syscall(SYSCALL_CLOSE,file,0,0);
}
int isatty(int file)
{
return syscall(SYSCALL_ISATTY,file,0,0);
}
int lseek(int file, int ptr, int dir)
{
return syscall(SYSCALL_LSEEK,file,ptr,dir);
}
int read(int file, char *ptr, int len)
{
return syscall(SYSCALL_READ,file,ptr,len);
}
int open(const char *name, int flags, int mode)
{
return syscall(SYSCALL_OPEN,name,flags,mode);
}
int write(int file, char *ptr, int len)
{
return syscall(SYSCALL_WRITE,file,ptr,len);
}
int execve(char *name, char **argv, char **env)
{
return syscall(SYSCALL_EXECVE,name,argv,env);
}
uint32_t sbrk(int incr)
{
return syscall(SYSCALL_SBRK,incr,0,0);
}
int gettimeofday(struct timeval *tv, void *tz)
{
return syscall(SYSCALL_GETTIMEOFDAY,tv,tz,0);
}
int fork(void)
{
return syscall(SYSCALL_FORK,0,0,0);
}
int getpid(void)
{
return syscall(SYSCALL_GETPID,0,0,0);
}
int kill(int pid, int sig)
{
return syscall(SYSCALL_KILL,pid,sig,0);
}
int link(char *old, char *ne)
{
return syscall(SYSCALL_LINK,old,ne,0);
}
int unlink(char *name)
{
return syscall(SYSCALL_UNLINK,name,0,0);
}
int times(struct tms *buf)
{
return syscall(SYSCALL_TIMES,buf,0,0);
}
int wait(int *status)
{
return syscall(SYSCALL_WAIT,status,0,0);
}
int stat(const char *file, struct stat *st)
{
return syscall(SYSCALL_STAT,file,st,0);
}
int lstat(const char *file, struct stat *st)
{
return syscall(SYSCALL_LSTAT,file,st,0);
}
int fstat(int file, struct stat *st)
{
return syscall(SYSCALL_FSTAT,file,st,0);
}
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