Imported gcc-4.4.3

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

diff --git a/gmp/mpn/vax/rshift.s b/gmp/mpn/vax/rshift.s
new file mode 100644 (file)
index 0000000..ae27208
--- /dev/null
+++ b/gmp/mpn/vax/rshift.s
@@ -0,0 +1,54 @@
+# VAX mpn_rshift -- right shift.
+
+# Copyright 1999, 2000, 2001 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
+# rptr         (sp + 4)
+# sptr         (sp + 8)
+# size         (sp + 12)
+# cnt          (sp + 16)
+# r0=retval r1=size r2,r3=itmp r4,r5=otmp      call-used registers
+# r6=sptr r7=rptr r8=cnt r9 r10 r11            call-saved registers
+
+.text
+       .align 1
+.globl ___gmpn_rshift
+___gmpn_rshift:
+       .word   0x1c0
+       movl    4(ap),r7
+       movl    8(ap),r6
+       movl    12(ap),r1
+       movl    16(ap),r8
+
+       movl    (r6)+,r2
+       subl3   r8,$32,r8
+       ashl    r8,r2,r0
+       decl    r1
+       jeql    Lend
+
+Loop:  movl    (r6)+,r3
+       ashq    r8,r2,r4
+       movl    r5,(r7)+
+       movl    r3,r2
+       sobgtr  r1,Loop
+
+Lend:  clrl    r3
+       ashq    r8,r2,r4
+       movl    r5,(r7)
+       ret