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add subr-call VM op

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* libguile/vm-i-system.c (subr_call): Add subr-call VM op.
This commit is contained in:
Andy Wingo 2010-01-05 16:51:58 +01:00
parent f318aa1e38
commit fd62932244
1 changed files with 69 additions and 0 deletions
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69
libguile/vm-i-system.c
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@ -886,6 +886,75 @@ VM_DEFINE_INSTRUCTION (55, tail_call, "tail-call", 1, -1, 1)
goto vm_error_wrong_type_apply;
}
VM_DEFINE_INSTRUCTION (80, subr_call, "subr-call", 1, -1, -1)
{
SCM foreign, ret;
SCM (*subr)();
nargs = FETCH ();
POP (foreign);
subr = SCM_FOREIGN_OBJECT_REF (foreign, void*);
VM_HANDLE_INTERRUPTS;
SYNC_REGISTER ();
switch (nargs)
{
case 0:
ret = subr ();
break;
case 1:
ret = subr (sp[0]);
break;
case 2:
ret = subr (sp[-1], sp[0]);
break;
case 3:
ret = subr (sp[-2], sp[-1], sp[0]);
break;
case 4:
ret = subr (sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 5:
ret = subr (sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 6:
ret = subr (sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 7:
ret = subr (sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 8:
ret = subr (sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 9:
ret = subr (sp[-8], sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
case 10:
ret = subr (sp[-9], sp[-8], sp[-7], sp[-6], sp[-5], sp[-4], sp[-3], sp[-2], sp[-1], sp[0]);
break;
default:
abort ();
}
NULLSTACK_FOR_NONLOCAL_EXIT ();
DROPN (nargs + 1); /* drop args and procedure */
if (SCM_UNLIKELY (SCM_VALUESP (ret)))
{
/* multiple values returned to continuation */
ret = scm_struct_ref (ret, SCM_INUM0);
nvalues = scm_ilength (ret);
PUSH_LIST (ret, scm_is_null);
goto vm_return_values;
}
else
{
PUSH (ret);
goto vm_return;
}
}
VM_DEFINE_INSTRUCTION (56, tail_call_nargs, "tail-call/nargs", 0, 0, 1)
{
SCM x;