2 Copyright (c) 2013-2014 Andes Technology Corporation.
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6 modification, are permitted provided that the following conditions are met:
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9 notice, this list of conditions and the following disclaimer.
11 Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
15 The name of the company may not be used to endorse or promote
16 products derived from this software without specific prior written
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
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24 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 /* The input argument is supposed to be stored in $fd0.
36 The return value is supposed to be stored in $fd0 either. */
38 /* Clear the IEEE cumulative exceptions flags. ($fpcsr.b[6:2]) */
40 bitci $r0, $r0, #0b1111100
45 /* Check the IEEE cumulative exceptions flags. */
47 bmski33 $r0, #2 /* Is $fpcsr.IVO('b2) set ? */
48 bnez $r0, .L_EDOM /* Set errno as EDOM. */
50 bmski33 $r0, #4 /* Is $fpcsr.OVF('b4) set ? */
51 bnez $r0, .L_ERANGE /* Set errno as ERANGE. */
53 bmski33 $r0, #5 /* Is $fpcsr.UDF('b5) set ? */
54 bnez $r0, .L_ERANGE /* Set errno as ERANGE. */
56 /* No error at all. Just ret. */
60 movi $r0, #33 /* EDOM: Math arg out of domain of func. */
63 movi $r0, #34 /* ERANGE: Math result not representable. */
66 swi $r0, [$r15] /* Set errno. */