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-rw-r--r--sysdeps/rs6000/add_n.s41
-rw-r--r--sysdeps/rs6000/addmul_1.s3
-rw-r--r--sysdeps/rs6000/lshift.s3
-rw-r--r--sysdeps/rs6000/mul_1.s3
-rw-r--r--sysdeps/rs6000/rshift.s3
-rw-r--r--sysdeps/rs6000/sub_n.s47
-rw-r--r--sysdeps/rs6000/submul_1.s3
7 files changed, 81 insertions, 22 deletions
diff --git a/sysdeps/rs6000/add_n.s b/sysdeps/rs6000/add_n.s
index e2536d5887..9e1c948974 100644
--- a/sysdeps/rs6000/add_n.s
+++ b/sysdeps/rs6000/add_n.s
@@ -1,6 +1,6 @@
# IBM POWER __mpn_add_n -- Add two limb vectors of equal, non-zero length.
-# Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1992, 1994, 1995, 1996 Free Software Foundation, Inc.
# This file is part of the GNU MP Library.
@@ -16,7 +16,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
@@ -37,18 +38,44 @@ __mpn_add_n:
.long .__mpn_add_n, TOC[tc0], 0
.csect [PR]
.__mpn_add_n:
- mtctr 6 # copy size into CTR
+ andil. 10,6,1 # odd or even number of limbs?
l 8,0(4) # load least significant s1 limb
l 0,0(5) # load least significant s2 limb
- cal 3,-4(3) # offset res_ptr, it's updated before used
+ cal 3,-4(3) # offset res_ptr, it's updated before it's used
+ sri 10,6,1 # count for unrolled loop
a 7,0,8 # add least significant limbs, set cy
+ mtctr 10 # copy count into CTR
+ beq 0,Leven # branch if even # of limbs (# of limbs >= 2)
+
+# We have an odd # of limbs. Add the first limbs separately.
+ cmpi 1,10,0 # is count for unrolled loop zero?
+ bne 1,L1 # branch if not
+ st 7,4(3)
+ aze 3,10 # use the fact that r10 is zero...
+ br # return
+
+# We added least significant limbs. Now reload the next limbs to enter loop.
+L1: lu 8,4(4) # load s1 limb and update s1_ptr
+ lu 0,4(5) # load s2 limb and update s2_ptr
+ stu 7,4(3)
+ ae 7,0,8 # add limbs, set cy
+Leven: lu 9,4(4) # load s1 limb and update s1_ptr
+ lu 10,4(5) # load s2 limb and update s2_ptr
bdz Lend # If done, skip loop
+
Loop: lu 8,4(4) # load s1 limb and update s1_ptr
lu 0,4(5) # load s2 limb and update s2_ptr
- stu 7,4(3) # store previous limb in load latency slot
- ae 7,0,8 # add new limbs with cy, set cy
+ ae 11,9,10 # add previous limbs with cy, set cy
+ stu 7,4(3) #
+ lu 9,4(4) # load s1 limb and update s1_ptr
+ lu 10,4(5) # load s2 limb and update s2_ptr
+ ae 7,0,8 # add previous limbs with cy, set cy
+ stu 11,4(3) #
bdn Loop # decrement CTR and loop back
-Lend: st 7,4(3) # store ultimate result limb
+
+Lend: ae 11,9,10 # add limbs with cy, set cy
+ st 7,4(3) #
+ st 11,8(3) #
lil 3,0 # load cy into ...
aze 3,3 # ... return value register
br
diff --git a/sysdeps/rs6000/addmul_1.s b/sysdeps/rs6000/addmul_1.s
index 862b6139fe..2db69841c7 100644
--- a/sysdeps/rs6000/addmul_1.s
+++ b/sysdeps/rs6000/addmul_1.s
@@ -17,7 +17,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
diff --git a/sysdeps/rs6000/lshift.s b/sysdeps/rs6000/lshift.s
index 69c7502061..38169bf53f 100644
--- a/sysdeps/rs6000/lshift.s
+++ b/sysdeps/rs6000/lshift.s
@@ -16,7 +16,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
diff --git a/sysdeps/rs6000/mul_1.s b/sysdeps/rs6000/mul_1.s
index f4fa894339..a72bce660c 100644
--- a/sysdeps/rs6000/mul_1.s
+++ b/sysdeps/rs6000/mul_1.s
@@ -17,7 +17,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
diff --git a/sysdeps/rs6000/rshift.s b/sysdeps/rs6000/rshift.s
index 6056acc753..30d408a24b 100644
--- a/sysdeps/rs6000/rshift.s
+++ b/sysdeps/rs6000/rshift.s
@@ -16,7 +16,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
diff --git a/sysdeps/rs6000/sub_n.s b/sysdeps/rs6000/sub_n.s
index c57675b106..30d4fee861 100644
--- a/sysdeps/rs6000/sub_n.s
+++ b/sysdeps/rs6000/sub_n.s
@@ -1,7 +1,6 @@
-# IBM POWER __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
-# store difference in a third limb vector.
+# IBM POWER __mpn_sub_n -- Subtract two limb vectors of equal, non-zero length.
-# Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1992, 1994, 1995, 1996 Free Software Foundation, Inc.
# This file is part of the GNU MP Library.
@@ -17,7 +16,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
@@ -38,18 +38,45 @@ __mpn_sub_n:
.long .__mpn_sub_n, TOC[tc0], 0
.csect [PR]
.__mpn_sub_n:
- mtctr 6 # copy size into CTR
+ andil. 10,6,1 # odd or even number of limbs?
l 8,0(4) # load least significant s1 limb
l 0,0(5) # load least significant s2 limb
- cal 3,-4(3) # offset res_ptr, it's updated before used
- sf 7,0,8 # add least significant limbs, set cy
+ cal 3,-4(3) # offset res_ptr, it's updated before it's used
+ sri 10,6,1 # count for unrolled loop
+ sf 7,0,8 # subtract least significant limbs, set cy
+ mtctr 10 # copy count into CTR
+ beq 0,Leven # branch if even # of limbs (# of limbs >= 2)
+
+# We have an odd # of limbs. Add the first limbs separately.
+ cmpi 1,10,0 # is count for unrolled loop zero?
+ bne 1,L1 # branch if not
+ st 7,4(3)
+ sfe 3,0,0 # load !cy into ...
+ sfi 3,3,0 # ... return value register
+ br # return
+
+# We added least significant limbs. Now reload the next limbs to enter loop.
+L1: lu 8,4(4) # load s1 limb and update s1_ptr
+ lu 0,4(5) # load s2 limb and update s2_ptr
+ stu 7,4(3)
+ sfe 7,0,8 # subtract limbs, set cy
+Leven: lu 9,4(4) # load s1 limb and update s1_ptr
+ lu 10,4(5) # load s2 limb and update s2_ptr
bdz Lend # If done, skip loop
+
Loop: lu 8,4(4) # load s1 limb and update s1_ptr
lu 0,4(5) # load s2 limb and update s2_ptr
- stu 7,4(3) # store previous limb in load latency slot
- sfe 7,0,8 # add new limbs with cy, set cy
+ sfe 11,10,9 # subtract previous limbs with cy, set cy
+ stu 7,4(3) #
+ lu 9,4(4) # load s1 limb and update s1_ptr
+ lu 10,4(5) # load s2 limb and update s2_ptr
+ sfe 7,0,8 # subtract previous limbs with cy, set cy
+ stu 11,4(3) #
bdn Loop # decrement CTR and loop back
-Lend: st 7,4(3) # store ultimate result limb
+
+Lend: sfe 11,10,9 # subtract limbs with cy, set cy
+ st 7,4(3) #
+ st 11,8(3) #
sfe 3,0,0 # load !cy into ...
sfi 3,3,0 # ... return value register
br
diff --git a/sysdeps/rs6000/submul_1.s b/sysdeps/rs6000/submul_1.s
index 252633261d..8e5946fe18 100644
--- a/sysdeps/rs6000/submul_1.s
+++ b/sysdeps/rs6000/submul_1.s
@@ -17,7 +17,8 @@
# You should have received a copy of the GNU Library General Public License
# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
-# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
# INPUT PARAMETERS
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 03:59:03 +0000