| 1 | /*
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| 2 | * Copyright (c) 2013 Jan Vesely
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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
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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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 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | .text
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| 30 |
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| 31 | .global fpsid_read
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| 32 | .global mvfr0_read
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| 33 | .global fpscr_read
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| 34 | .global fpscr_write
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| 35 | .global fpexc_read
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| 36 | .global fpexc_write
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| 37 |
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| 38 | .global fpu_context_save_s32
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| 39 | .global fpu_context_restore_s32
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| 40 | .global fpu_context_save_d16
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| 41 | .global fpu_context_restore_d16
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| 42 | .global fpu_context_save_d32
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| 43 | .global fpu_context_restore_d32
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| 44 |
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| 45 | fpsid_read:
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| 46 | vmrs r0, fpsid
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| 47 | mov pc, lr
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| 48 |
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| 49 | mvfr0_read:
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| 50 | vmrs r0, mvfr0
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| 51 | mov pc, lr
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| 52 |
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| 53 | fpscr_read:
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| 54 | vmrs r0, fpscr
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| 55 | mov pc, lr
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| 56 |
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| 57 | fpscr_write:
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| 58 | vmsr fpscr, r0
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| 59 | mov pc, lr
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| 60 |
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| 61 | fpexc_read:
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| 62 | vmrs r0, fpexc
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| 63 | mov pc, lr
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| 64 |
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| 65 | fpexc_write:
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| 66 | vmsr fpexc, r0
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| 67 | mov pc, lr
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| 68 |
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| 69 | fpu_context_save_s32:
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| 70 | vmrs r1, fpexc
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| 71 | vmrs r2, fpscr
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| 72 | stmia r0!, {r1, r2}
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| 73 | vstmia r0!, {s0-s31}
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| 74 | mov pc, lr
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| 75 |
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| 76 | fpu_context_restore_s32:
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| 77 | ldmia r0!, {r1, r2}
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| 78 | vmsr fpexc, r1
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| 79 | vmsr fpscr, r2
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| 80 | vldmia r0!, {s0-s31}
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| 81 | mov pc, lr
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| 82 |
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| 83 | fpu_context_save_d16:
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| 84 | vmrs r1, fpexc
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| 85 | vmrs r2, fpscr
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| 86 | stmia r0!, {r1, r2}
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| 87 | vstmia r0!, {d0-d15}
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| 88 | mov pc, lr
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| 89 |
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| 90 | fpu_context_restore_d16:
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| 91 | ldmia r0!, {r1, r2}
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| 92 | vmsr fpexc, r1
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| 93 | vmsr fpscr, r2
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| 94 | vldmia r0!, {d0-d15}
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| 95 | mov pc, lr
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| 96 |
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| 97 | fpu_context_save_d32:
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| 98 | vmrs r1, fpexc
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| 99 | stmia r0!, {r1}
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| 100 | vmrs r1, fpscr
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| 101 | stmia r0!, {r1}
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| 102 | vstmia r0!, {d0-d15}
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| 103 | vstmia r0!, {d16-d31}
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| 104 | mov pc, lr
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| 105 |
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| 106 | fpu_context_restore_d32:
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| 107 | ldmia r0!, {r1, r2}
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| 108 | vmsr fpexc, r1
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| 109 | vmsr fpscr, r2
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| 110 | vldmia r0!, {d0-d15}
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| 111 | vldmia r0!, {d16-d31}
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| 112 | mov pc, lr
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| 113 |
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| 114 |
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| 115 |
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