| 1 | /* |
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| 2 | Copyright (c) 2013 Andes Technology Corporation. |
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| 3 | All rights reserved. |
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| 4 | |
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| 5 | Redistribution and use in source and binary forms, with or without |
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| 6 | modification, are permitted provided that the following conditions are met: |
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| 7 | |
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| 8 | Redistributions of source code must retain the above copyright |
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| 9 | notice, this list of conditions and the following disclaimer. |
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| 10 | |
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| 11 | Redistributions in binary form must reproduce the above copyright |
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| 12 | notice, this list of conditions and the following disclaimer in the |
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| 13 | documentation and/or other materials provided with the distribution. |
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| 14 | |
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| 15 | The name of the company may not be used to endorse or promote |
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| 16 | products derived from this software without specific prior written |
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| 17 | permission. |
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| 18 | |
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| 19 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 20 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 21 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 22 | DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
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| 23 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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| 24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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| 25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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| 26 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 29 | */ |
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| 30 | /* |
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| 31 | SYNOPSIS |
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| 32 | #include <unistd.h> |
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| 33 | int isatty(int fildes); |
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| 34 | RETURN VALUE |
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| 35 | The isatty() function shall return 1 if fildes is associated with |
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| 36 | a terminal; otherwise, it shall return 0 and may set errno |
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| 37 | to indicate the error. |
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| 38 | */ |
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| 39 | #ifdef __NDS32_VH__ |
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| 40 | |
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| 41 | #include "vh.h" |
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| 42 | .extern _impure_ptr |
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| 43 | TYPE0 _isatty, VH_ISATTY |
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| 44 | |
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| 45 | #else /* not __NDS32_VH__ */ |
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| 46 | |
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| 47 | #include "../syscall.h" |
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| 48 | #include "syscall_extra.h" |
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| 49 | .text |
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| 50 | .global _isatty |
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| 51 | .type _isatty, @function |
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| 52 | .align 2 |
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| 53 | _isatty: |
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| 54 | syscall SYS_isatty /* Make syscall with SWID=`SYS_isatty'. |
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| 55 | Reture value `0' stored in $r0 means |
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| 56 | there is something wrong. */ |
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| 57 | bnez $r0, 1f /* Branch if success. */ |
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| 58 | syscall SYS_geterr /* There is something wrong. */ |
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| 59 | l.w $r15, _impure_ptr |
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| 60 | swi $r0, [$r15] /* Set errno. */ |
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| 61 | move $r0, #0 |
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| 62 | 1: |
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| 63 | ret |
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| 64 | .size _isatty, .-_isatty |
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| 65 | |
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| 66 | #endif /* not __NDS32_VH__ */ |
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