1 | /* |
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2 | * hal_kentry.S - Entry points into the kernel (exceptions/interrupts/syscalls) |
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3 | * |
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4 | * Copyright (c) 2017 Maxime Villard |
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5 | * |
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6 | * This file is part of ALMOS-MKH. |
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7 | * |
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8 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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9 | * under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; version 2.0 of the License. |
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11 | * |
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12 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | * General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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20 | */ |
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21 | |
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22 | #define x86_ASM |
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23 | #include <hal_boot.h> |
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24 | #include <hal_kentry.h> |
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25 | #include <hal_apic.h> |
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26 | |
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27 | #define TRAPENTRY(a) \ |
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28 | pushq $(a); \ |
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29 | jmp alltraps; |
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30 | |
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31 | #define ZTRAPENTRY(a) \ |
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32 | pushq $0; \ |
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33 | TRAPENTRY(a) |
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34 | |
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35 | .text |
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36 | .globl hal_exception_entry |
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37 | .globl hal_timer_intr |
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38 | .globl ioc_ata_isr |
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39 | .globl hal_com1_intr |
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40 | .globl hal_keyboard_intr |
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41 | .type hal_exception_entry, @function |
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42 | .type hal_timer_intr, @function |
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43 | .type ioc_ata_isr, @function |
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44 | .type hal_com1_intr, @function |
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45 | .type hal_keyboard_intr, @function |
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46 | |
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47 | /* |
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48 | * General exceptions. |
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49 | */ |
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50 | ASM_ENTRY(x86_trap00) |
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51 | ZTRAPENTRY(T_DIVIDE) |
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52 | |
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53 | ASM_ENTRY(x86_trap01) |
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54 | ZTRAPENTRY(T_TRCTRAP) |
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55 | |
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56 | ASM_ENTRY(x86_trap02) |
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57 | ZTRAPENTRY(T_NMI) |
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58 | |
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59 | ASM_ENTRY(x86_trap03) |
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60 | ZTRAPENTRY(T_BPTFLT) |
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61 | |
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62 | ASM_ENTRY(x86_trap04) |
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63 | ZTRAPENTRY(T_OFLOW) |
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64 | |
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65 | ASM_ENTRY(x86_trap05) |
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66 | ZTRAPENTRY(T_BOUND) |
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67 | |
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68 | ASM_ENTRY(x86_trap06) |
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69 | ZTRAPENTRY(T_PRIVINFLT) |
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70 | |
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71 | ASM_ENTRY(x86_trap07) |
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72 | ZTRAPENTRY(T_DNA) |
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73 | |
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74 | ASM_ENTRY(x86_trap08) |
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75 | TRAPENTRY(T_DOUBLEFLT) |
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76 | |
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77 | ASM_ENTRY(x86_trap09) |
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78 | ZTRAPENTRY(T_FPOPFLT) |
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79 | |
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80 | ASM_ENTRY(x86_trap0a) |
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81 | TRAPENTRY(T_TSSFLT) |
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82 | |
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83 | ASM_ENTRY(x86_trap0b) |
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84 | TRAPENTRY(T_SEGNPFLT) |
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85 | |
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86 | ASM_ENTRY(x86_trap0c) |
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87 | TRAPENTRY(T_STKFLT) |
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88 | |
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89 | ASM_ENTRY(x86_trap0d) |
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90 | TRAPENTRY(T_PROTFLT) |
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91 | |
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92 | ASM_ENTRY(x86_trap0e) |
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93 | TRAPENTRY(T_PAGEFLT) |
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94 | |
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95 | ASM_ENTRY(x86_trap0f) |
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96 | ZTRAPENTRY(T_ASTFLT) |
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97 | |
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98 | ASM_ENTRY(x86_trap10) |
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99 | ZTRAPENTRY(T_ARITHTRAP) |
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100 | |
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101 | ASM_ENTRY(x86_trap11) |
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102 | TRAPENTRY(T_ALIGNFLT) |
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103 | |
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104 | ASM_ENTRY(x86_trap12) |
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105 | ZTRAPENTRY(T_MCA) |
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106 | |
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107 | ASM_ENTRY(x86_trap13) |
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108 | ZTRAPENTRY(T_XMM) |
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109 | |
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110 | ASM_ENTRY(x86_trap14) |
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111 | ASM_ENTRY(x86_trap15) |
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112 | ASM_ENTRY(x86_trap16) |
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113 | ASM_ENTRY(x86_trap17) |
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114 | ASM_ENTRY(x86_trap18) |
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115 | ASM_ENTRY(x86_trap19) |
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116 | ASM_ENTRY(x86_trap1a) |
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117 | ASM_ENTRY(x86_trap1b) |
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118 | ASM_ENTRY(x86_trap1c) |
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119 | ASM_ENTRY(x86_trap1d) |
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120 | ASM_ENTRY(x86_trap1e) |
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121 | ASM_ENTRY(x86_trap1f) |
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122 | ASM_ENTRY(x86_rsvd) |
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123 | /* 20 - 31 reserved for future exp */ |
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124 | ZTRAPENTRY(T_RESERVED) |
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125 | |
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126 | /* |
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127 | * APIC interrupts. |
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128 | */ |
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129 | ASM_ENTRY(x86_lapic_spurious) |
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130 | ZTRAPENTRY(T_ASTFLT) |
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131 | |
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132 | ASM_ENTRY(x86_lapic_timer) |
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133 | pushq $0 |
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134 | pushq $T_ASTFLT |
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135 | INTR_SAVE_REGS |
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136 | |
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137 | movq %rsp,%rdi |
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138 | call hal_timer_intr |
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139 | |
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140 | movq lapic_va(%rip),%rax |
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141 | movl $0,LAPIC_EOI(%rax) |
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142 | |
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143 | INTR_RESTORE_REGS |
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144 | addq $16,%rsp |
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145 | iretq |
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146 | |
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147 | ASM_ENTRY(x86_ioapic_ata0) |
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148 | pushq $0 |
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149 | pushq $T_ASTFLT |
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150 | INTR_SAVE_REGS |
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151 | |
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152 | movq %rsp,%rdi |
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153 | call ioc_ata_isr |
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154 | |
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155 | movq lapic_va(%rip),%rax |
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156 | movl $0,LAPIC_EOI(%rax) |
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157 | |
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158 | INTR_RESTORE_REGS |
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159 | addq $16,%rsp |
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160 | iretq |
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161 | |
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162 | ASM_ENTRY(x86_ioapic_com1) |
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163 | pushq $0 |
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164 | pushq $T_ASTFLT |
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165 | INTR_SAVE_REGS |
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166 | |
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167 | movq %rsp,%rdi |
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168 | call hal_com1_intr |
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169 | |
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170 | movq lapic_va(%rip),%rax |
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171 | movl $0,LAPIC_EOI(%rax) |
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172 | |
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173 | INTR_RESTORE_REGS |
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174 | addq $16,%rsp |
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175 | iretq |
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176 | |
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177 | ASM_ENTRY(x86_ioapic_keyboard) |
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178 | pushq $0 |
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179 | pushq $T_ASTFLT |
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180 | INTR_SAVE_REGS |
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181 | |
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182 | movq %rsp,%rdi |
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183 | call hal_keyboard_intr |
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184 | |
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185 | movq lapic_va(%rip),%rax |
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186 | movl $0,LAPIC_EOI(%rax) |
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187 | |
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188 | INTR_RESTORE_REGS |
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189 | addq $16,%rsp |
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190 | iretq |
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191 | |
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192 | /* |
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193 | * Common entry point for exceptions. |
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194 | */ |
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195 | alltraps: |
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196 | INTR_SAVE_REGS |
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197 | |
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198 | movq %rsp,%rdi |
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199 | call hal_exception_entry |
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200 | /* NOTREACHED */ |
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201 | |
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202 | .data |
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203 | .globl x86_traps |
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204 | .globl x86_intrs |
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205 | .type x86_traps, @object |
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206 | .type x86_intrs, @object |
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207 | |
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208 | .align 64 |
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209 | x86_traps: |
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210 | .quad x86_trap00, x86_trap01 |
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211 | .quad x86_trap02, x86_trap03 |
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212 | .quad x86_trap04, x86_trap05 |
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213 | .quad x86_trap06, x86_trap07 |
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214 | .quad x86_trap08, x86_trap09 |
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215 | .quad x86_trap0a, x86_trap0b |
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216 | .quad x86_trap0c, x86_trap0d |
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217 | .quad x86_trap0e, x86_trap0f |
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218 | .quad x86_trap10, x86_trap11 |
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219 | .quad x86_trap12, x86_trap13 |
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220 | .quad x86_trap14, x86_trap15 |
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221 | .quad x86_trap16, x86_trap17 |
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222 | .quad x86_trap18, x86_trap19 |
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223 | .quad x86_trap1a, x86_trap1b |
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224 | .quad x86_trap1c, x86_trap1d |
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225 | .quad x86_trap1e, x86_trap1f |
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226 | |
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227 | x86_intrs: |
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228 | .quad x86_lapic_spurious |
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229 | .quad x86_lapic_timer |
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230 | .quad x86_ioapic_com1 |
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231 | .quad x86_ioapic_keyboard |
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232 | |
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