Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / vax / add_n.s

diff --git a/gmp/mpn/vax/add_n.s b/gmp/mpn/vax/add_n.s
new file mode 100644 (file)
index 0000000..60773cc
--- /dev/null
+++ b/gmp/mpn/vax/add_n.s
@@ -0,0 +1,59 @@
+# VAX __gmpn_add_n -- Add two limb vectors of the same length > 0 and store
+# sum in a third limb vector.
+
+# Copyright 1999, 2000 Free Software Foundation, Inc.
+
+# This file is part of the GNU MP Library.
+
+# The GNU MP Library is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or (at your
+# option) any later version.
+
+# The GNU MP Library is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+# License for more details.
+
+# You should have received a copy of the GNU Lesser General Public License
+# along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
+
+
+# INPUT PARAMETERS
+# res_ptr      (sp + 4)
+# s1_ptr       (sp + 8)
+# s2_ptr       (sp + 12)
+# size         (sp + 16)
+
+.text
+       .align 1
+.globl ___gmpn_add_n
+___gmpn_add_n:
+       .word   0x0
+       movl    16(ap),r0
+       movl    12(ap),r1
+       movl    8(ap),r2
+       movl    4(ap),r3
+       mnegl   r0,r5
+       addl2   $3,r0
+       ashl    $-2,r0,r0       # unroll loop count
+       bicl2   $-4,r5          # mask out low 2 bits
+       movaq   (r5)[r5],r5     # 9x
+       jmp     Loop(r5)
+
+Loop:  movl    (r2)+,r4
+       adwc    (r1)+,r4
+       movl    r4,(r3)+
+       movl    (r2)+,r4
+       adwc    (r1)+,r4
+       movl    r4,(r3)+
+       movl    (r2)+,r4
+       adwc    (r1)+,r4
+       movl    r4,(r3)+
+       movl    (r2)+,r4
+       adwc    (r1)+,r4
+       movl    r4,(r3)+
+       sobgtr  r0,Loop
+
+       adwc    r0,r0
+       ret