| 1 | /* Copyright (c) 2012, 2013 Red Hat, Inc. All rights reserved. |
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| 2 | |
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| 3 | This copyrighted material is made available to anyone wishing to use, modify, |
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| 4 | copy, or redistribute it subject to the terms and conditions of the BSD |
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| 5 | License. This program is distributed in the hope that it will be useful, |
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| 6 | but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties |
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| 7 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license |
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| 8 | is available at http://www.opensource.org/licenses. Any Red Hat trademarks that |
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| 9 | are incorporated in the source code or documentation are not subject to the BSD |
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| 10 | License and may only be used or replicated with the express permission of |
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| 11 | Red Hat, Inc. |
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| 12 | */ |
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| 13 | |
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| 14 | /* Empty syscall definitions for when we run on real hardware. */ |
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| 15 | |
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| 16 | #include "../syscall.h" |
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| 17 | #include "memmodel.h" |
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| 18 | |
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| 19 | #define ENOSYS 88 |
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| 20 | |
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| 21 | .macro sc,a |
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| 22 | sc2 \a,\a |
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| 23 | .endm |
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| 24 | |
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| 25 | .macro START_FUNC name1, name2=foo |
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| 26 | .pushsection .text.\name1,"ax",@progbits |
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| 27 | .p2align 1 |
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| 28 | .weak \name1 |
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| 29 | .global \name1 |
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| 30 | \name1: |
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| 31 | .ifnc \name2,foo |
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| 32 | .weak \name2 |
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| 33 | .global \name2 |
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| 34 | \name2: |
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| 35 | .endif |
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| 36 | .endm |
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| 37 | |
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| 38 | .macro END_FUNC name1, name2=foo |
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| 39 | .type \name1 , @function |
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| 40 | .size \name1 , . - \name1 |
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| 41 | .ifnc \name2,foo |
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| 42 | .type \name2 , @function |
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| 43 | .size \name2 , . - \name2 |
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| 44 | .endif |
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| 45 | .popsection |
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| 46 | .endm |
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| 47 | |
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| 48 | |
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| 49 | START_FUNC exit, _exit |
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| 50 | /* For some reason, the board fails to stop at a breakpoint |
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| 51 | placed on top of a software breakpoint instruction. */ |
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| 52 | /* MOV.B #0,R3 ; this is a software breakpoint instruction */ |
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| 53 | 1: br_ #1b |
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| 54 | END_FUNC exit, _exit |
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| 55 | |
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| 56 | |
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| 57 | START_FUNC isatty,_isatty |
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| 58 | MOV #1,R12 |
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| 59 | ret_ |
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| 60 | END_FUNC isatty,_isatty |
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| 61 | |
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| 62 | |
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| 63 | START_FUNC getpid |
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| 64 | MOV #42,R12 |
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| 65 | ret_ |
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| 66 | END_FUNC getpid |
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| 67 | |
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| 68 | |
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| 69 | .macro sc2,name,num |
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| 70 | START_FUNC \name |
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| 71 | call_ #__errno |
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| 72 | movx_ #ENOSYS, @R12 |
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| 73 | MOV.W #-1,R12 |
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| 74 | ret_ |
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| 75 | END_FUNC \name |
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| 76 | .endm |
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| 77 | |
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| 78 | #define SC(n) sc2 n,SYS_##n |
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| 79 | |
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| 80 | SC (open) |
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| 81 | SC (close) |
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| 82 | SC (read) |
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| 83 | /* SC (write)*/ |
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| 84 | SC (fstat) |
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| 85 | SC (lseek) |
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| 86 | SC (kill) |
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