--- /dev/null
+dnl S/390 mpn_mul_1 -- Multiply a limb vector with a limb and store the
+dnl result in a second limb vector.
+
+dnl Copyright 2001 Free Software Foundation, Inc.
+
+dnl This file is part of the GNU MP Library.
+
+dnl The GNU MP Library is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU Lesser General Public License as published
+dnl by the Free Software Foundation; either version 3 of the License, or (at
+dnl your option) any later version.
+
+dnl The GNU MP Library is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+dnl License for more details.
+
+dnl You should have received a copy of the GNU Lesser General Public License
+dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+define(`rp',2)
+define(`up',3)
+define(`n',4)
+define(`vlimb',5)
+define(`cylimb',7)
+
+ASM_START()
+PROLOGUE(mpn_mul_1)
+ stm 6,7,24(15)
+ slr cylimb,cylimb # clear cylimb
+ ltr vlimb,vlimb
+ jnl .Loopp
+
+.Loopn: l 1,0(up) # load from u
+ lr 6,1 #
+ mr 0,vlimb # multiply signed
+ alr 0,6 # add vlimb to phi
+ sra 6,31 # make mask
+ nr 6,vlimb # 0 or vlimb
+ alr 0,6 # conditionally add vlimb to phi
+ alr 1,cylimb # add carry limb to plo
+ brc 8+4,+8 # branch if not carry
+ ahi 0,1 # increment phi
+ lr cylimb,0 # new cylimb
+ st 1,0(rp) # store
+ la up,4(,up)
+ la rp,4(,rp)
+ brct n,.Loopn
+
+ lr 2,cylimb
+ lm 6,7,24(15)
+ br 14
+
+.Loopp: l 1,0(up) # load from u
+ lr 6,1 #
+ mr 0,vlimb # multiply signed
+ sra 6,31 # make mask
+ nr 6,vlimb # 0 or vlimb
+ alr 0,6 # conditionally add vlimb to phi
+ alr 1,cylimb # add carry limb to plo
+ brc 8+4,+8 # branch if not carry
+ ahi 0,1 # increment phi
+ lr cylimb,0 # new cylimb
+ st 1,0(rp) # store
+ la up,4(,up)
+ la rp,4(,rp)
+ brct n,.Loopp
+
+ lr 2,cylimb
+ lm 6,7,24(15)
+ br 14
+EPILOGUE(mpn_mul_1)