| [444] | 1 | /* crt0.S for the TI C6X series of processors |
|---|
| 2 | |
|---|
| 3 | Copyright (c) 2010 CodeSourcery, Inc. |
|---|
| 4 | All rights reserved. |
|---|
| 5 | |
|---|
| 6 | Redistribution and use in source and binary forms, with or without |
|---|
| 7 | modification, are permitted provided that the following conditions are met: |
|---|
| 8 | * Redistributions of source code must retain the above copyright |
|---|
| 9 | notice, this list of conditions and the following disclaimer. |
|---|
| 10 | * Redistributions in binary form must reproduce the above copyright |
|---|
| 11 | notice, this list of conditions and the following disclaimer in the |
|---|
| 12 | documentation and/or other materials provided with the distribution. |
|---|
| 13 | * Neither the name of CodeSourcery nor the |
|---|
| 14 | names of its contributors may be used to endorse or promote products |
|---|
| 15 | derived from this software without specific prior written permission. |
|---|
| 16 | |
|---|
| 17 | THIS SOFTWARE IS PROVIDED BY CODESOURCERY, INC. ``AS IS'' AND ANY |
|---|
| 18 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|---|
| 19 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
|---|
| 20 | PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CODESOURCERY BE LIABLE |
|---|
| 21 | FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
|---|
| 22 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
|---|
| 23 | OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
|---|
| 24 | BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
|---|
| 25 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|---|
| 26 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
|---|
| 27 | USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
|---|
| 28 | DAMAGE. */ |
|---|
| 29 | |
|---|
| 30 | .text |
|---|
| 31 | .align 2 |
|---|
| 32 | |
|---|
| 33 | .global _start |
|---|
| 34 | _start: |
|---|
| 35 | /* Start by setting up a stack */ |
|---|
| 36 | mvkl .s2 _STACK_START - 4, B15 |
|---|
| 37 | mvkh .s2 _STACK_START - 4, B15 |
|---|
| 38 | and .s2 -8, B15, B15 |
|---|
| 39 | |
|---|
| 40 | mvkl .s2 __c6xabi_DSBT_BASE, B14 |
|---|
| 41 | mvkh .s2 __c6xabi_DSBT_BASE, B14 |
|---|
| 42 | |
|---|
| 43 | #ifdef __DSBT__ |
|---|
| 44 | stw .d2t2 B14, *B14 |
|---|
| 45 | #endif |
|---|
| 46 | /* Zero the memory in the .bss section. */ |
|---|
| 47 | |
|---|
| 48 | /* Set up GOT pointer. */ |
|---|
| 49 | |
|---|
| 50 | mvkl .s2 1f, B3 |
|---|
| 51 | mvkh .s2 1f, B3 |
|---|
| 52 | call .s2 _init |
|---|
| 53 | nop 5 |
|---|
| 54 | 1: |
|---|
| 55 | |
|---|
| 56 | mvkl .s2 1f, B3 |
|---|
| 57 | mvkh .s2 1f, B3 |
|---|
| 58 | call .s2 main |
|---|
| 59 | nop 5 |
|---|
| 60 | 1: |
|---|
| 61 | |
|---|
| 62 | b .s2 exit |
|---|
| 63 | nop 5 |
|---|
