| 1 | /* crt0.S for the TI C6X series of processors |
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| 2 | |
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| 3 | Copyright (c) 2010 CodeSourcery, Inc. |
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| 4 | All rights reserved. |
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| 5 | |
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| 6 | Redistribution and use in source and binary forms, with or without |
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| 7 | modification, are permitted provided that the following conditions are met: |
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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 | * Redistributions in binary form must reproduce the above copyright |
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| 11 | notice, this list of conditions and the following disclaimer in the |
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| 12 | documentation and/or other materials provided with the distribution. |
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| 13 | * Neither the name of CodeSourcery nor the |
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| 14 | names of its contributors may 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 CODESOURCERY, INC. ``AS IS'' AND ANY |
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| 18 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 20 | PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CODESOURCERY BE LIABLE |
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| 21 | FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 22 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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| 23 | OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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| 24 | BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 25 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
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| 27 | USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
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| 28 | DAMAGE. */ |
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| 29 | |
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| 30 | .text |
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| 31 | .align 2 |
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| 32 | |
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| 33 | .global _start |
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| 34 | _start: |
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| 35 | /* Start by setting up a stack */ |
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| 36 | mvkl .s2 _STACK_START - 4, B15 |
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| 37 | mvkh .s2 _STACK_START - 4, B15 |
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| 38 | and .s2 -8, B15, B15 |
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| 39 | |
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| 40 | mvkl .s2 __c6xabi_DSBT_BASE, B14 |
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| 41 | mvkh .s2 __c6xabi_DSBT_BASE, B14 |
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| 42 | |
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| 43 | #ifdef __DSBT__ |
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| 44 | stw .d2t2 B14, *B14 |
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| 45 | #endif |
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| 46 | /* Zero the memory in the .bss section. */ |
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| 47 | |
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| 48 | /* Set up GOT pointer. */ |
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| 49 | |
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| 50 | mvkl .s2 1f, B3 |
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| 51 | mvkh .s2 1f, B3 |
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| 52 | call .s2 _init |
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| 53 | nop 5 |
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| 54 | 1: |
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| 55 | |
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| 56 | mvkl .s2 1f, B3 |
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| 57 | mvkh .s2 1f, B3 |
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| 58 | call .s2 main |
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| 59 | nop 5 |
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| 60 | 1: |
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| 61 | |
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| 62 | b .s2 exit |
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| 63 | nop 5 |
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