int
linux_sys_set_thread_area(struct proc *p, void *v, register_t *retval)
{
struct linux_sys_set_thread_area_args *uap = v;
struct l_segment_descriptor ldesc;
int error;
error = copyin(SCARG(uap, desc), &ldesc, sizeof ldesc);
if (error != 0)
return error;
if (ldesc.entry_number == -1) {
ldesc.entry_number = GUGS_SEL;
if ((error = copyout(&ldesc, SCARG(uap, desc), sizeof ldesc)))
return error;
} else if (ldesc.entry_number != GUGS_SEL)
return EINVAL;
return i386_set_threadbase(p, SCARG(uap, desc)->base_addr, TSEG_GS);
}
int
sys_sysarch(struct proc *p, void *v, register_t *retval)
{
struct sys_sysarch_args /* {
syscallarg(int) op;
syscallarg(void *) parms;
} */ *uap = v;
int error = 0;
switch(SCARG(uap, op)) {
#ifdef USER_LDT
case I386_GET_LDT:
error = i386_get_ldt(p, SCARG(uap, parms), retval);
break;
case I386_SET_LDT:
error = i386_set_ldt(p, SCARG(uap, parms), retval);
break;
#endif
case I386_IOPL:
error = i386_iopl(p, SCARG(uap, parms), retval);
break;
case I386_GET_IOPERM:
error = i386_get_ioperm(p, SCARG(uap, parms), retval);
break;
case I386_SET_IOPERM:
error = i386_set_ioperm(p, SCARG(uap, parms), retval);
break;
#ifdef VM86
case I386_VM86:
error = i386_vm86(p, SCARG(uap, parms), retval);
break;
#endif
case I386_GET_FSBASE:
{
uint32_t base = i386_get_threadbase(p, TSEG_FS);
error = copyout(&base, SCARG(uap, parms), sizeof(base));
break;
}
case I386_SET_FSBASE:
{
uint32_t base;
if ((error = copyin(SCARG(uap, parms), &base, sizeof(base))))
break;
error = i386_set_threadbase(p, base, TSEG_FS);
break;
}
case I386_GET_GSBASE:
{
uint32_t base = i386_get_threadbase(p, TSEG_GS);
error = copyout(&base, SCARG(uap, parms), sizeof(base));
break;
}
case I386_SET_GSBASE:
{
uint32_t base;
if ((error = copyin(SCARG(uap, parms), &base, sizeof(base))))
break;
error = i386_set_threadbase(p, base, TSEG_GS);
break;
}
default:
error = EINVAL;
break;
}
return (error);
}
