Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / pa32 / hppa1_1 / addmul_1.asm

diff --git a/gmp/mpn/pa32/hppa1_1/addmul_1.asm b/gmp/mpn/pa32/hppa1_1/addmul_1.asm
new file mode 100644 (file)
index 0000000..c50e4e1
--- /dev/null
+++ b/gmp/mpn/pa32/hppa1_1/addmul_1.asm
@@ -0,0 +1,96 @@
+dnl  HP-PA 1.1 mpn_addmul_1 -- Multiply a limb vector with a limb and add the
+dnl  result to a second limb vector.
+
+dnl  Copyright 1992, 1993, 1994, 2000, 2001, 2002 Free Software Foundation,
+dnl  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')
+
+C INPUT PARAMETERS
+C res_ptr      r26
+C s1_ptr       r25
+C size         r24
+C s2_limb      r23
+
+C This runs at 11 cycles/limb on a PA7000.  With the used instructions, it can
+C not become faster due to data cache contention after a store.  On the PA7100
+C it runs at 10 cycles/limb.
+
+C There are some ideas described in mul_1.asm that applies to this code too.
+
+ASM_START()
+PROLOGUE(mpn_addmul_1)
+C      .callinfo       frame=64,no_calls
+
+       ldo             64(%r30),%r30
+       fldws,ma        4(%r25),%fr5
+       stw             %r23,-16(%r30)          C move s2_limb ...
+       addib,=         -1,%r24,L(just_one_limb)
+        fldws          -16(%r30),%fr4          C ... into fr4
+       add             %r0,%r0,%r0             C clear carry
+       xmpyu           %fr4,%fr5,%fr6
+       fldws,ma        4(%r25),%fr7
+       fstds           %fr6,-16(%r30)
+       xmpyu           %fr4,%fr7,%fr8
+       ldw             -12(%r30),%r19          C least significant limb in product
+       ldw             -16(%r30),%r28
+
+       fstds           %fr8,-16(%r30)
+       addib,=         -1,%r24,L(end)
+        ldw            -12(%r30),%r1
+
+C Main loop
+LDEF(loop)
+       ldws            0(%r26),%r29
+       fldws,ma        4(%r25),%fr5
+       add             %r29,%r19,%r19
+       stws,ma         %r19,4(%r26)
+       addc            %r28,%r1,%r19
+       xmpyu           %fr4,%fr5,%fr6
+       ldw             -16(%r30),%r28
+       fstds           %fr6,-16(%r30)
+       addc            %r0,%r28,%r28
+       addib,<>        -1,%r24,L(loop)
+        ldw            -12(%r30),%r1
+
+LDEF(end)
+       ldw             0(%r26),%r29
+       add             %r29,%r19,%r19
+       stws,ma         %r19,4(%r26)
+       addc            %r28,%r1,%r19
+       ldw             -16(%r30),%r28
+       ldws            0(%r26),%r29
+       addc            %r0,%r28,%r28
+       add             %r29,%r19,%r19
+       stws,ma         %r19,4(%r26)
+       addc            %r0,%r28,%r28
+       bv              0(%r2)
+        ldo            -64(%r30),%r30
+
+LDEF(just_one_limb)
+       xmpyu           %fr4,%fr5,%fr6
+       ldw             0(%r26),%r29
+       fstds           %fr6,-16(%r30)
+       ldw             -12(%r30),%r1
+       ldw             -16(%r30),%r28
+       add             %r29,%r1,%r19
+       stw             %r19,0(%r26)
+       addc            %r0,%r28,%r28
+       bv              0(%r2)
+        ldo            -64(%r30),%r30
+EPILOGUE()