| 1 | /* Copyright (c) 2001, 2009 Xilinx, Inc. All rights reserved. |
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| 2 | |
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| 3 | Redistribution and use in source and binary forms, with or without |
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| 4 | modification, are permitted provided that the following conditions are |
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| 5 | met: |
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| 6 | |
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| 7 | 1. Redistributions source code must retain the above copyright notice, |
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| 8 | this list of conditions and the following disclaimer. |
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| 9 | |
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| 10 | 2. 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 | |
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| 14 | 3. Neither the name of Xilinx nor the names of its contributors may be |
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| 15 | used to endorse or promote products derived from this software without |
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| 16 | specific prior written permission. |
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| 17 | |
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| 18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS |
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| 19 | IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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| 20 | TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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| 21 | PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 22 | HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 23 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 24 | TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 25 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 26 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 27 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 29 | */ |
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| 30 | |
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| 31 | .globl _crtinit |
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| 32 | .align 2 |
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| 33 | .ent _crtinit |
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| 34 | .type _crtinit, @function |
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| 35 | _crtinit: |
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| 36 | addi r1, r1, -20 /* Save Link register */ |
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| 37 | swi r15, r1, 0 |
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| 38 | |
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| 39 | addi r6, r0, __sbss_start /* clear SBSS */ |
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| 40 | addi r7, r0, __sbss_end |
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| 41 | rsub r18, r6, r7 |
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| 42 | blei r18, .Lendsbss |
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| 43 | |
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| 44 | .Lloopsbss: |
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| 45 | swi r0, r6, 0 |
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| 46 | addi r6, r6, 4 |
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| 47 | rsub r18, r6, r7 |
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| 48 | bgti r18, .Lloopsbss |
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| 49 | .Lendsbss: |
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| 50 | |
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| 51 | addi r6, r0, __bss_start /* clear BSS */ |
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| 52 | addi r7, r0, __bss_end |
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| 53 | rsub r18, r6, r7 |
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| 54 | blei r18, .Lendbss |
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| 55 | .Lloopbss: |
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| 56 | swi r0, r6, 0 |
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| 57 | addi r6, r6, 4 |
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| 58 | rsub r18, r6, r7 |
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| 59 | bgti r18, .Lloopbss |
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| 60 | .Lendbss: |
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| 61 | |
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| 62 | brlid r15, _program_init /* Initialize the program */ |
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| 63 | nop |
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| 64 | |
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| 65 | brlid r15, __init /* Invoke language initialization functions */ |
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| 66 | nop |
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| 67 | |
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| 68 | addi r6, r0, 0 /* Initialize argc = 1 and argv = NULL and envp = NULL */ |
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| 69 | addi r7, r0, 0 |
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| 70 | brlid r15, main /* Execute the program */ |
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| 71 | addi r5, r0, 0 |
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| 72 | |
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| 73 | addik r19, r3, 0 /* Save return value */ |
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| 74 | |
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| 75 | brlid r15, __fini /* Invoke language cleanup functions */ |
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| 76 | nop |
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| 77 | |
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| 78 | brlid r15, _program_clean /* Cleanup the program */ |
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| 79 | nop |
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| 80 | |
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| 81 | lw r15, r1, r0 /* Return back to CRT */ |
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| 82 | |
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| 83 | addik r3, r19, 0 /* Restore return value */ |
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| 84 | rtsd r15, 8 |
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| 85 | addi r1, r1, 20 |
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| 86 | .end _crtinit |
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| 87 | |
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