2 * Copyright (C) 2014 Andrew Turner
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <machine/asm.h>
29 __FBSDID("$FreeBSD$");
31 #define PCR_Z (1 << 30)
32 #define PCR_C (1 << 29)
35 * These functions return the result in the CPSR register.
37 * For __aeabi_cfcmple:
43 * __aeabi_cfrcmple is the same as __aeabi_cfcmple, however the arguments
46 ENTRY(__aeabi_cfcmple)
49 /* Backup the input registers */
52 /* Is it less than? */
56 /* Yes, clear Z and C */
61 /* Restore the input regsters for the next function call */
68 /* Yes, set Z and C */
69 mov ip, #(PCR_Z | PCR_C)
73 /* Not less than or equal, set C and clear Z */
81 ENTRY(__aeabi_cfrcmple)
82 /* Swap the arguments */
91 * This is just like __aeabi_cfcmple except it will not throw an exception
92 * in the presence of a quiet NaN. If either argument is a signalling NaN we
95 ENTRY(__aeabi_cfcmpeq)
96 /* Check if we can call __aeabi_cfcmple safely */
98 bl __aeabi_cfcmpeq_helper
112 .section .note.GNU-stack,"",%progbits