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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1988-1991 by Sun Microsystems, Inc.
*/
#ident "%Z%%M% %I% %E% SMI" /* From SunOS 4.1 1.6 */
#include <sys/asm_linkage.h>
#include <sys/trap.h>
#include <sys/machtrap.h>
#include <sys/simulate.h>
/*
* C run time subroutines.
*
* Those beginning in `.' are not callable from C and hence do not
* get lint prototypes.
*/
/*
* Structure return
*/
#define UNIMP 0
#define MASK 0x00000fff
#define STRUCT_VAL_OFF (16*4)
RTENTRY(.stret4)
RTENTRY(.stret8)
!
! see if key matches: if not, structure value not expected,
! so just return
!
ld [%i7 + 8], %o3
and %o1, MASK, %o4
sethi %hi(UNIMP), %o5
or %o4, %o5, %o5
cmp %o5, %o3
be,a 0f
ld [%fp + STRUCT_VAL_OFF], %i0 ! set expected return value
ret
restore
0: ! copy the struct
subcc %o1, 4, %o1
ld [%o0 + %o1], %o4
bg 0b
st %o4, [%i0 + %o1] ! delay slot
add %i7, 0x4, %i7 ! bump return address
ret
restore
SET_SIZE(.stret4)
SET_SIZE(.stret8)
RTENTRY(.stret2)
!
! see if key matches: if not, structure value not expected,
! so just return
!
ld [%i7 + 8], %o3
and %o1, MASK, %o4
sethi %hi(UNIMP), %o5
or %o4, %o5, %o5
cmp %o5, %o3
be,a 0f
ld [%fp + STRUCT_VAL_OFF], %i0 ! set expected return value
ret
restore
0: ! copy the struct
subcc %o1, 2, %o1
lduh [%o0 + %o1], %o4
bg 0b
sth %o4, [%i0 + %o1] ! delay slot
add %i7, 0x4, %i7 ! bump return address
ret
restore
SET_SIZE(.stret2)
/*
* Convert 32-bit arg pairs in %o0:o1 and %o2:%o3 to 64-bit args in %o1 and %o2
*/
#define ARGS_TO_64 \
sllx %o0, 32, %o0; \
srl %o1, 0, %o1; \
sllx %o2, 32, %o2; \
srl %o3, 0, %o3; \
or %o0, %o1, %o1; \
or %o2, %o3, %o2
RTENTRY(__mul64)
ALTENTRY(__umul64)
ARGS_TO_64
sub %o1, %o2, %o0 ! %o0 = a - b
movrlz %o0, %g0, %o0 ! %o0 = (a < b) ? 0 : a - b
sub %o1, %o0, %o1 ! %o1 = (a < b) ? a : b = min(a, b)
add %o2, %o0, %o2 ! %o2 = (a < b) ? b : a = max(a, b)
mulx %o1, %o2, %o1 ! min(a, b) in "rs1" for early exit
retl
srax %o1, 32, %o0
SET_SIZE(__mul64)
SET_SIZE(__umul64)
RTENTRY(__div64)
ARGS_TO_64
sdivx %o1, %o2, %o1
retl
srax %o1, 32, %o0
SET_SIZE(__div64)
RTENTRY(__udiv64)
ARGS_TO_64
udivx %o1, %o2, %o1
retl
srax %o1, 32, %o0
SET_SIZE(__udiv64)
RTENTRY(__rem64)
ARGS_TO_64
sdivx %o1, %o2, %o3
mulx %o2, %o3, %o3
sub %o1, %o3, %o1
retl
srax %o1, 32, %o0
SET_SIZE(__rem64)
RTENTRY(__urem64)
ARGS_TO_64
udivx %o1, %o2, %o3
mulx %o2, %o3, %o3
sub %o1, %o3, %o1
retl
srax %o1, 32, %o0
SET_SIZE(__urem64)
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