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35 | jermar | 1 | # |
2 | # Copyright (C) 2005 Jakub Jermar |
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3 | # All rights reserved. |
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4 | # |
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5 | # Redistribution and use in source and binary forms, with or without |
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6 | # modification, are permitted provided that the following conditions |
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7 | # are met: |
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8 | # |
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9 | # - Redistributions of source code must retain the above copyright |
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10 | # notice, this list of conditions and the following disclaimer. |
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11 | # - Redistributions in binary form must reproduce the above copyright |
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12 | # notice, this list of conditions and the following disclaimer in the |
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13 | # documentation and/or other materials provided with the distribution. |
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14 | # - The name of the author may not 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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | # |
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28 | |||
36 | jermar | 29 | #include <arch/ski/ski.h> |
30 | |||
60 | jermar | 31 | .section K_TEXT_START |
32 | .global k_text_start |
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33 | k_text_start: |
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34 | |||
35 | .section K_TEXT_END |
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36 | .global k_text_end |
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37 | k_text_end: |
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38 | |||
39 | .section K_DATA_START |
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40 | .global k_data_start |
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41 | k_data_start: |
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42 | |||
43 | .section K_DATA_END |
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44 | .global k_data_end |
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45 | k_data_end: |
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46 | |||
47 | |||
35 | jermar | 48 | .text |
49 | |||
50 | .global kernel_image_start |
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51 | |||
37 | jermar | 52 | stack0: |
35 | jermar | 53 | kernel_image_start: |
36 | jermar | 54 | # initialize gp (Global Pointer) register |
60 | jermar | 55 | movl r1=k_text_start; |
36 | jermar | 56 | |
37 | jermar | 57 | # set stack pointer to some sane value |
60 | jermar | 58 | movl r12=stack0 |
59 | |||
60 | # |
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61 | # Initialize hardcoded_* variables. |
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62 | # (IA-64 port doesn't get these values from linker.) |
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63 | # |
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64 | movl r8 = k_text_start ;; |
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65 | movl r9 = k_text_end ;; |
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66 | sub r8 = r9, r8 ;; |
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67 | addl r10 = @gprel(hardcoded_ktext_size), gp;; |
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68 | st4 [r10] = r8 ;; |
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69 | |||
70 | movl r8 = k_data_start ;; |
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71 | movl r9 = k_data_end ;; |
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72 | sub r8 = r9, r8 ;; |
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73 | addl r10 = @gprel(hardcoded_kdata_size), gp;; |
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74 | st4 [r10] = r8 ;; |
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37 | jermar | 75 | |
60 | jermar | 76 | addl r10 = @gprel(hardcoded_load_address), gp;; |
77 | st8 [r10] = r1 |
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78 | |||
37 | jermar | 79 | # initialize Ski console using SSC (Simulator System Call) |
36 | jermar | 80 | mov r15=SKI_CONSOLE_INIT |
81 | break 0x80000 |
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82 | |||
60 | jermar | 83 | br.call.sptk.many b0=main_bsp |
51 | jermar | 84 | |
36 | jermar | 85 | 0: |
39 | jermar | 86 | br 0b |
60 | jermar | 87 |