| 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 | MicroBlaze Vector Map for vector-less ELF images |
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| 32 | |
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| 33 | Address Vector type Label |
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| 34 | ------- ----------- ------ |
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| 35 | |
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| 36 | # 0x00 # (-- IMM --) |
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| 37 | # 0x04 # Reset (-- Don't Care --) |
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| 38 | |
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| 39 | # 0x08 # (-- IMM --) |
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| 40 | # 0x0c # Software Exception (-- Don't Care --) |
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| 41 | |
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| 42 | # 0x10 # (-- IMM --) |
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| 43 | # 0x14 # Hardware Interrupt (-- Don't Care --) |
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| 44 | |
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| 45 | # 0x18 # (-- IMM --) |
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| 46 | # 0x1C # Breakpoint Exception (-- Don't Care --) |
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| 47 | |
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| 48 | # 0x20 # (-- IMM --) |
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| 49 | # 0x24 # Hardware Exception (-- Don't Care --) |
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| 50 | |
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| 51 | */ |
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| 52 | |
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| 53 | |
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| 54 | .section .text |
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| 55 | .globl _start |
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| 56 | .align 2 |
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| 57 | .ent _start |
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| 58 | .type _start, @function |
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| 59 | _start: |
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| 60 | la r13, r0, _SDA_BASE_ /* Set the Small Data Anchors and the stack pointer */ |
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| 61 | la r2, r0, _SDA2_BASE_ |
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| 62 | la r1, r0, _stack-16 /* 16 bytes (4 words are needed by crtinit for args and link reg */ |
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| 63 | |
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| 64 | brlid r15, _crtinit /* Initialize BSS and run program */ |
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| 65 | nop |
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| 66 | |
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| 67 | brlid r15, exit /* Call exit with the return value of main */ |
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| 68 | addik r5, r3, 0 |
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| 69 | |
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| 70 | /* Control does not reach here */ |
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| 71 | .end _start |
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| 72 | |
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| 73 | |
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| 74 | /* |
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| 75 | _exit |
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| 76 | Our simple _exit |
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| 77 | */ |
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| 78 | .globl _exit |
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| 79 | .align 2 |
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| 80 | .ent _exit |
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| 81 | .type _exit, @function |
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| 82 | _exit: |
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| 83 | bri 0 |
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| 84 | .end _exit |
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