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224 | palkovsky | 1 | # |
2 | # Copyright (C) 2005 Ondrej Palkovsky |
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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 | |||
29 | |||
30 | # Mask for interrupts 0 - 31 (bits 0 - 31) where 0 means that int has no error word |
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31 | # and 1 means interrupt with error word |
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32 | |||
33 | |||
34 | #define ERROR_WORD_INTERRUPT_LIST 0x00027D00 |
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35 | |||
36 | #define __ASM__ |
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37 | #include <arch/pm.h> |
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38 | |||
39 | .text |
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40 | .global interrupt_handlers |
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41 | .global panic_printf |
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42 | |||
43 | panic_printf: |
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44 | movq $halt, (%rsp) |
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45 | jmp printf |
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46 | |||
47 | # Push all general purpose registers on stack except %rbp, %rsp |
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48 | .macro push_all_gpr |
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49 | pushq %rax |
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50 | pushq %rbx |
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51 | pushq %rcx |
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52 | pushq %rdx |
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53 | pushq %rsi |
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54 | pushq %rdi |
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55 | pushq %r8 |
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56 | pushq %r9 |
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57 | pushq %r10 |
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58 | pushq %r11 |
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59 | pushq %r12 |
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60 | pushq %r13 |
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61 | pushq %r14 |
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62 | pushq %r15 |
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63 | .endm |
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64 | |||
65 | .macro pop_all_gpr |
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66 | popq %r15 |
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67 | popq %r14 |
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68 | popq %r13 |
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69 | popq %r12 |
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70 | popq %r11 |
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71 | popq %r10 |
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72 | popq %r9 |
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73 | popq %r8 |
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74 | popq %rdi |
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75 | popq %rsi |
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76 | popq %rdx |
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77 | popq %rcx |
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78 | popq %rbx |
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79 | popq %rax |
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80 | .endm |
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81 | |||
82 | ## Declare interrupt handlers |
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83 | # |
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84 | # Declare interrupt handlers for n interrupt |
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85 | # vectors starting at vector i. |
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86 | # |
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87 | # The handlers setup data segment registers |
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88 | # and call trap_dispatcher(). |
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89 | # |
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90 | .macro handler i n |
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91 | pushq %rbp |
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92 | movq %rsp,%rbp |
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93 | |||
94 | push_all_gpr |
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95 | |||
96 | # trap_dispatcher(i, stack) |
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97 | movq $(\i),%rdi # %rdi - first parameter |
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98 | movq %rbp, %rsi |
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99 | addq $8, %rsi # %rsi - second parameter - original stack |
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100 | call trap_dispatcher |
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101 | |||
102 | # Test if this is interrupt with error word or not |
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103 | mov $\i,%cl; |
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104 | movl $1,%eax; |
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105 | test $0xe0,%cl; |
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106 | jnz 0f; |
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107 | and $0x1f,%cl; |
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108 | shl %cl,%eax; |
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109 | and $ERROR_WORD_INTERRUPT_LIST,%eax; |
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110 | jz 0f; |
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111 | |||
112 | |||
113 | # Return with error word |
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114 | pop_all_gpr |
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115 | |||
116 | popq %rbp; |
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117 | add $8,%esp; # Skip error word |
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118 | iretq |
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119 | |||
120 | 0: |
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121 | # Return with no error word |
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122 | pop_all_gpr |
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123 | |||
124 | popq %rbp |
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125 | iretq |
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126 | |||
127 | .if (\n-\i)-1 |
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128 | handler "(\i+1)",\n |
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129 | .endif |
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130 | .endm |
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131 | |||
132 | interrupt_handlers: |
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133 | h_start: |
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134 | handler 0 IDT_ITEMS |
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135 | # handler 64 128 |
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136 | # handler 128 192 |
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137 | # handler 192 256 |
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138 | h_end: |
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139 | |||
140 | |||
141 | .data |
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142 | .global interrupt_handler_size |
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143 | |||
144 | interrupt_handler_size: .long (h_end-h_start)/IDT_ITEMS |