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-@ *****************************************************************
-@
-@ The Compcert verified compiler
-@
-@ Xavier Leroy, INRIA Paris-Rocquencourt
-@
-@ Copyright (c) 2013 Institut National de Recherche en Informatique et
-@ en Automatique.
-@
-@ Redistribution and use in source and binary forms, with or without
-@ modification, are permitted provided that the following conditions are met:
-@ * Redistributions of source code must retain the above copyright
-@ notice, this list of conditions and the following disclaimer.
-@ * Redistributions in binary form must reproduce the above copyright
-@ notice, this list of conditions and the following disclaimer in the
-@ documentation and/or other materials provided with the distribution.
-@ * Neither the name of the <organization> nor the
-@ names of its contributors may be used to endorse or promote products
-@ derived from this software without specific prior written permission.
-@
-@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-@ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-@ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-@ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT
-@ HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-@ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-@ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-@ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-@ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-@ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-@
-@ *********************************************************************
-
-@ Helper functions for 64-bit integer arithmetic. ARM version.
-
- .text
-
-@@@ Signed comparison
-
- .global __i64_scmp
-__i64_scmp:
- cmp r0, r2 @ compare low words (unsigned)
- moveq r0, #0 @ res = 0 if eq
- movhi r0, #1 @ res = 1 if unsigned higher
- mvnlo r0, #0 @ res = -1 if unsigned lower
- cmp r1, r3 @ compare high words (signed)
- addgt r0, r0, #2 @ res += 2 if signed greater
- sublt r0, r0, #2 @ res -= 2 if signed less
- @ here, r0 = 0 if X == Y
- @ r0 = -3, -2, -1 if X < Y
- @ r0 = 1, 2, 3 if X > Y
- bx lr
- .type __i64_scmp, %function
- .size __i64_scmp, . - __i64_scmp
-