| 1 | /* Copyright (c) 2016 Phoenix Systems |
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| 2 | All rights reserved. |
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| 3 | |
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| 4 | Redistribution and use in source and binary forms, with or without |
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| 5 | modification, are permitted provided that the following conditions |
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| 6 | are met: |
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| 7 | 1. Redistributions of source code must retain the above copyright |
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| 8 | notice, this list of conditions and the following disclaimer. |
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| 9 | 2. Redistributions in binary form must reproduce the above copyright |
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| 10 | notice, this list of conditions and the following disclaimer in the |
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| 11 | documentation and/or other materials provided with the distribution. |
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| 12 | |
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| 13 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 14 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 15 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 16 | ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 17 | FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 18 | DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 19 | OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 20 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 21 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 22 | OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 23 | SUCH DAMAGE.*/ |
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| 24 | |
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| 25 | .syntax unified |
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| 26 | .section .text, "ax" |
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| 27 | .global _start |
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| 28 | .global main |
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| 29 | .global exit |
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| 30 | .global environ |
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| 31 | .global __progname |
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| 32 | |
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| 33 | .align 4 |
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| 34 | |
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| 35 | _start: |
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| 36 | /* Ignore return address passed on the top of stack. */ |
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| 37 | pop {lr} |
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| 38 | ldmfd sp, {r0-r2} |
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| 39 | ldr r3, =environ |
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| 40 | ldr r4, =__progname |
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| 41 | ldr r5, [r1] |
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| 42 | str r2, [r3] |
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| 43 | str r5, [r4] |
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| 44 | |
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| 45 | /* Align stack. */ |
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| 46 | bic sp, #0x00000007 |
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| 47 | ldr lr, =main |
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| 48 | blx lr |
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| 49 | ldr lr, =exit |
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| 50 | blx lr |
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| 51 | |
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| 52 | .section .data |
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| 53 | __progname: |
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| 54 | .word 0 |
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