int copy_sc_to_user_skas(int pid, void *to_ptr, void *fp,
union uml_pt_regs *regs, unsigned long fault_addr,
int fault_type)
{
struct sigcontext sc, *to = to_ptr;
struct _fpstate *to_fp;
unsigned long fpregs[FP_FRAME_SIZE];
int err;
sc.gs = regs->skas.regs[GS];
sc.fs = regs->skas.regs[FS];
sc.es = regs->skas.regs[ES];
sc.ds = regs->skas.regs[DS];
sc.edi = regs->skas.regs[EDI];
sc.esi = regs->skas.regs[ESI];
sc.ebp = regs->skas.regs[EBP];
sc.esp = regs->skas.regs[UESP];
sc.ebx = regs->skas.regs[EBX];
sc.edx = regs->skas.regs[EDX];
sc.ecx = regs->skas.regs[ECX];
sc.eax = regs->skas.regs[EAX];
sc.eip = regs->skas.regs[EIP];
sc.cs = regs->skas.regs[CS];
sc.eflags = regs->skas.regs[EFL];
sc.esp_at_signal = regs->skas.regs[UESP];
sc.ss = regs->skas.regs[SS];
sc.cr2 = fault_addr;
sc.err = TO_SC_ERR(fault_type);
sc.trapno = regs->skas.trap_type;
err = ptrace(PTRACE_GETFPREGS, pid, 0, fpregs);
if(err < 0){
printk("copy_sc_to_user - PTRACE_GETFPREGS failed, "
"errno = %d\n", errno);
return(1);
}
to_fp = (struct _fpstate *)
(fp ? (unsigned long) fp : ((unsigned long) to + sizeof(*to)));
sc.fpstate = to_fp;
if(err)
return(err);
return(copy_to_user_proc(to, &sc, sizeof(sc)) ||
copy_to_user_proc(to_fp, fpregs, sizeof(fpregs)));
}
int os_write_file(int fd, void *buf, int count)
{
int n;
/* Force buf into memory if it's not already. */
/* XXX This fails if buf is kernel memory */
#ifdef notdef
if(copy_to_user_proc(buf, buf, buf[0]))
return(-EFAULT);
#endif
n = write(fd, buf, count);
if(n < 0)
return(-errno);
return(n);
}
int os_read_file(int fd, void *buf, int len)
{
int n;
/* Force buf into memory if it's not already. */
/* XXX This fails if buf is kernel memory */
#ifdef notdef
if(copy_to_user_proc(buf, &c, sizeof(c)))
return(-EFAULT);
#endif
n = read(fd, buf, len);
if(n < 0)
return(-errno);
return(n);
}
