| 5ffcd257 |
1 | #------------------------------------------------------------------------------\r |
| 2 | #*\r |
| 3 | #* Copyright 2006, Intel Corporation \r |
| 4 | #* All rights reserved. This program and the accompanying materials \r |
| 5 | #* are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | #* which accompanies this distribution. The full text of the license may be found at \r |
| 7 | #* http://opensource.org/licenses/bsd-license.php \r |
| 8 | #* \r |
| 9 | #* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | #* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | #* \r |
| 12 | #* CpuInterrupt.S\r |
| 13 | #* \r |
| 14 | #* Abstract:\r |
| 15 | #*\r |
| 16 | #------------------------------------------------------------------------------\r |
| 17 | \r |
| 18 | #PUBLIC SystemTimerHandler\r |
| 19 | #PUBLIC SystemExceptionHandler\r |
| 20 | #EXTERNDEF mExceptionCodeSize:DWORD\r |
| 21 | \r |
| 22 | #EXTERN TimerHandler: NEAR\r |
| 23 | #EXTERN ExceptionHandler: NEAR\r |
| 24 | #EXTERN mTimerVector: DWORD\r |
| 25 | \r |
| 26 | .data\r |
| 27 | .globl ASM_PFX(mExceptionCodeSize)\r |
| 28 | ASM_PFX(mExceptionCodeSize): .long 9\r |
| 29 | \r |
| 30 | .text\r |
| 31 | .globl ASM_PFX(InitDescriptor)\r |
| 32 | \r |
| 6794a1b9 |
33 | ASM_PFX(InitDescriptor):\r |
| 5ffcd257 |
34 | movl $GDT_BASE,%eax # EAX=PHYSICAL address of gdt\r |
| 35 | movl %eax, gdtr + 2 # Put address of gdt into the gdtr\r |
| 6794a1b9 |
36 | lgdt gdtr\r |
| 5ffcd257 |
37 | movl $IDT_BASE,%eax # EAX=PHYSICAL address of idt\r |
| 38 | movl %eax, idtr + 2 # Put address of idt into the idtr\r |
| 6794a1b9 |
39 | lidt idtr\r |
| 40 | ret\r |
| 41 | \r |
| 5ffcd257 |
42 | # VOID\r |
| 43 | # InstallInterruptHandler (\r |
| 44 | # UINTN Vector,\r |
| 45 | # VOID (*Handler)(VOID)\r |
| 46 | # )\r |
| 47 | .globl ASM_PFX(InstallInterruptHandler)\r |
| 6794a1b9 |
48 | ASM_PFX(InstallInterruptHandler):\r |
| 5ffcd257 |
49 | # Vector:DWORD @ 4(%esp)\r |
| 50 | # Handler:DWORD @ 8(%esp)\r |
| 51 | \r |
| 52 | push %edi\r |
| 53 | pushf # save eflags\r |
| 6794a1b9 |
54 | cli # turn off interrupts\r |
| 5ffcd257 |
55 | subl $6,%esp # open some space on the stack\r |
| 56 | movl %esp,%edi\r |
| 57 | sidt (%edi) # get fword address of IDT\r |
| 58 | movl 2(%edi), %edi # move offset of IDT into EDI\r |
| 59 | addl $6,%esp # correct stack\r |
| 60 | movl 12(%esp),%eax # Get vector number\r |
| 61 | shl $3,%eax # multiply by 8 to get offset\r |
| 62 | addl %eax,%edi # add to IDT base to get entry\r |
| 63 | movl 16(%esp),%eax # load new address into IDT entry\r |
| 64 | movw %ax,(%edi) # write bits 15..0 of offset\r |
| 65 | shrl $16,%eax # use ax to copy 31..16 to descriptors\r |
| 66 | movw %ax,6(%edi) # write bits 31..16 of offset\r |
| 67 | popf # restore flags (possible enabling interrupts)\r |
| 6794a1b9 |
68 | pop %edi\r |
| 69 | ret\r |
| 70 | \r |
| 5ffcd257 |
71 | .macro JmpCommonIdtEntry\r |
| 72 | # jmp commonIdtEntry - this must be hand coded to keep the assembler from\r |
| 73 | # using a 8 bit reletive jump when the entries are\r |
| 74 | # within 255 bytes of the common entry. This must\r |
| 75 | # be done to maintain the consistency of the size\r |
| 76 | # of entry points...\r |
| 77 | .byte 0xe9 # jmp 16 bit reletive \r |
| 78 | .long commonIdtEntry - . - 4 # offset to jump to\r |
| 79 | .endm\r |
| 80 | \r |
| 81 | .align 2\r |
| 82 | .globl ASM_PFX(SystemExceptionHandler)\r |
| 6794a1b9 |
83 | ASM_PFX(SystemExceptionHandler):\r |
| 84 | INT0:\r |
| 5ffcd257 |
85 | pushl $0x0 # push error code place holder on the stack\r |
| 86 | pushl $0x0 \r |
| 87 | JmpCommonIdtEntry\r |
| 88 | # db 0e9h # jmp 16 bit reletive \r |
| 89 | # dd commonIdtEntry - $ - 4 # offset to jump to\r |
| 90 | \r |
| 6794a1b9 |
91 | INT1:\r |
| 5ffcd257 |
92 | pushl $0x0 # push error code place holder on the stack\r |
| 93 | pushl $0x1 \r |
| 94 | JmpCommonIdtEntry\r |
| 95 | \r |
| 6794a1b9 |
96 | INT2:\r |
| 5ffcd257 |
97 | pushl $0x0 # push error code place holder on the stack\r |
| 98 | pushl $0x2 \r |
| 99 | JmpCommonIdtEntry\r |
| 100 | \r |
| 6794a1b9 |
101 | INT3:\r |
| 5ffcd257 |
102 | pushl $0x0 # push error code place holder on the stack\r |
| 103 | pushl $0x3 \r |
| 104 | JmpCommonIdtEntry\r |
| 105 | \r |
| 6794a1b9 |
106 | INT4:\r |
| 5ffcd257 |
107 | pushl $0x0 # push error code place holder on the stack\r |
| 108 | pushl $0x4 \r |
| 109 | JmpCommonIdtEntry\r |
| 110 | \r |
| 6794a1b9 |
111 | INT5:\r |
| 5ffcd257 |
112 | pushl $0x0 # push error code place holder on the stack\r |
| 113 | pushl $0x5 \r |
| 114 | JmpCommonIdtEntry\r |
| 115 | \r |
| 6794a1b9 |
116 | INT6:\r |
| 5ffcd257 |
117 | pushl $0x0 # push error code place holder on the stack\r |
| 118 | pushl $0x6 \r |
| 119 | JmpCommonIdtEntry\r |
| 120 | \r |
| 6794a1b9 |
121 | INT7:\r |
| 5ffcd257 |
122 | pushl $0x0 # push error code place holder on the stack\r |
| 123 | pushl $0x7 \r |
| 124 | JmpCommonIdtEntry\r |
| 125 | \r |
| 6794a1b9 |
126 | INT8:\r |
| 5ffcd257 |
127 | # Double fault causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
128 | nop\r |
| 129 | nop\r |
| 5ffcd257 |
130 | pushl $0x8 \r |
| 131 | JmpCommonIdtEntry\r |
| 132 | \r |
| 6794a1b9 |
133 | INT9:\r |
| 5ffcd257 |
134 | pushl $0x0 # push error code place holder on the stack\r |
| 135 | pushl $0x9 \r |
| 136 | JmpCommonIdtEntry\r |
| 137 | \r |
| 6794a1b9 |
138 | INT10:\r |
| 5ffcd257 |
139 | # Invalid TSS causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
140 | nop\r |
| 141 | nop\r |
| 142 | pushl $10\r |
| 5ffcd257 |
143 | JmpCommonIdtEntry\r |
| 144 | \r |
| 6794a1b9 |
145 | INT11:\r |
| 5ffcd257 |
146 | # Segment Not Present causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
147 | nop\r |
| 148 | nop\r |
| 149 | pushl $11\r |
| 5ffcd257 |
150 | JmpCommonIdtEntry\r |
| 151 | \r |
| 6794a1b9 |
152 | INT12:\r |
| 5ffcd257 |
153 | # Stack fault causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
154 | nop\r |
| 155 | nop\r |
| 156 | pushl $12\r |
| 5ffcd257 |
157 | JmpCommonIdtEntry\r |
| 158 | \r |
| 6794a1b9 |
159 | INT13:\r |
| 5ffcd257 |
160 | # GP fault causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
161 | nop\r |
| 162 | nop\r |
| 163 | pushl $13\r |
| 5ffcd257 |
164 | JmpCommonIdtEntry\r |
| 165 | \r |
| 6794a1b9 |
166 | INT14:\r |
| 5ffcd257 |
167 | # Page fault causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
168 | nop\r |
| 169 | nop\r |
| 170 | pushl $14\r |
| 5ffcd257 |
171 | JmpCommonIdtEntry\r |
| 172 | \r |
| 6794a1b9 |
173 | INT15:\r |
| 5ffcd257 |
174 | pushl $0x0 # push error code place holder on the stack\r |
| 175 | pushl $15\r |
| 176 | JmpCommonIdtEntry\r |
| 177 | \r |
| 6794a1b9 |
178 | INT16:\r |
| 5ffcd257 |
179 | pushl $0x0 # push error code place holder on the stack\r |
| 180 | pushl $16\r |
| 181 | JmpCommonIdtEntry\r |
| 182 | \r |
| 6794a1b9 |
183 | INT17:\r |
| 5ffcd257 |
184 | # Alignment check causes an error code to be pushed so no phony push necessary\r |
| 6794a1b9 |
185 | nop\r |
| 186 | nop\r |
| 187 | pushl $17\r |
| 5ffcd257 |
188 | JmpCommonIdtEntry\r |
| 189 | \r |
| 6794a1b9 |
190 | INT18:\r |
| 5ffcd257 |
191 | pushl $0x0 # push error code place holder on the stack\r |
| 192 | pushl $18\r |
| 193 | JmpCommonIdtEntry\r |
| 194 | \r |
| 6794a1b9 |
195 | INT19:\r |
| 5ffcd257 |
196 | pushl $0x0 # push error code place holder on the stack\r |
| 197 | pushl $19\r |
| 198 | JmpCommonIdtEntry\r |
| 6794a1b9 |
199 | \r |
| 5ffcd257 |
200 | INTUnknown:\r |
| 201 | .rept (32 - 20)\r |
| 202 | pushl $0x0 # push error code place holder on the stack\r |
| 203 | # push xxh # push vector number\r |
| 204 | .byte 0x6a\r |
| 205 | .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number\r |
| 206 | JmpCommonIdtEntry\r |
| 207 | .endr\r |
| 208 | \r |
| 209 | .globl ASM_PFX(SystemTimerHandler)\r |
| 6794a1b9 |
210 | ASM_PFX(SystemTimerHandler):\r |
| 5ffcd257 |
211 | pushl $0\r |
| 01f1138a |
212 | pushl $ASM_PFX(mTimerVector)\r |
| 5ffcd257 |
213 | JmpCommonIdtEntry\r |
| 6794a1b9 |
214 | \r |
| 215 | commonIdtEntry:\r |
| 216 | # +---------------------+\r |
| 217 | # + EFlags +\r |
| 218 | # +---------------------+\r |
| 219 | # + CS +\r |
| 220 | # +---------------------+\r |
| 221 | # + EIP +\r |
| 222 | # +---------------------+\r |
| 223 | # + Error Code +\r |
| 224 | # +---------------------+\r |
| 225 | # + Vector Number +\r |
| 226 | # +---------------------+\r |
| 227 | # + EBP +\r |
| 228 | # +---------------------+ <-- EBP\r |
| 229 | \r |
| 230 | cli\r |
| 5ffcd257 |
231 | push %ebp\r |
| 232 | movl %esp,%ebp\r |
| 6794a1b9 |
233 | \r |
| 234 | #\r |
| 235 | # Align stack to make sure that EFI_FX_SAVE_STATE_IA32 of EFI_SYSTEM_CONTEXT_IA32\r |
| 236 | # is 16-byte aligned\r |
| 237 | #\r |
| 5ffcd257 |
238 | andl $0xfffffff0,%esp\r |
| 239 | subl $12,%esp\r |
| 6794a1b9 |
240 | \r |
| 241 | ## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax#\r |
| 5ffcd257 |
242 | push %eax\r |
| 243 | push %ecx\r |
| 244 | push %edx\r |
| 245 | push %ebx\r |
| 246 | leal 6*4(%ebp),%ecx\r |
| 247 | push %ecx # ESP\r |
| 248 | push (%ebp) # EBP\r |
| 249 | push %esi\r |
| 250 | push %edi\r |
| 6794a1b9 |
251 | \r |
| 252 | ## UINT32 Gs, Fs, Es, Ds, Cs, Ss#\r |
| 5ffcd257 |
253 | movw %ss,%ax\r |
| 254 | push %eax\r |
| 255 | movzx 4*4(%ebp),%eax\r |
| 256 | push %eax\r |
| 257 | movw %ds,%ax\r |
| 258 | push %eax\r |
| 259 | movw %es,%ax\r |
| 260 | push %eax\r |
| 261 | movw %fs,%ax\r |
| 262 | push %eax\r |
| 263 | movw %gs,%ax\r |
| 264 | push %eax\r |
| 6794a1b9 |
265 | \r |
| 266 | ## UINT32 Eip#\r |
| 5ffcd257 |
267 | pushl 3*4(%ebp)\r |
| 6794a1b9 |
268 | \r |
| 269 | ## UINT32 Gdtr[2], Idtr[2]#\r |
| 5ffcd257 |
270 | subl $8,%esp\r |
| 271 | sidt (%esp)\r |
| 272 | subl $8,%esp\r |
| 273 | sgdt (%esp)\r |
| 6794a1b9 |
274 | \r |
| 275 | ## UINT32 Ldtr, Tr#\r |
| 5ffcd257 |
276 | xorl %eax, %eax\r |
| 277 | str %ax\r |
| 278 | push %eax\r |
| 279 | sldt %eax\r |
| 280 | push %eax\r |
| 6794a1b9 |
281 | \r |
| 282 | ## UINT32 EFlags#\r |
| 5ffcd257 |
283 | pushl 5*4(%ebp)\r |
| 6794a1b9 |
284 | \r |
| 285 | ## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4#\r |
| 5ffcd257 |
286 | mov %cr4,%eax\r |
| 287 | orl $0x208,%eax\r |
| 288 | mov %eax,%cr4\r |
| 289 | push %eax\r |
| 290 | mov %cr3,%eax\r |
| 291 | push %eax\r |
| 292 | mov %cr2,%eax\r |
| 293 | push %eax\r |
| 294 | xor %eax, %eax\r |
| 295 | push %eax\r |
| 296 | mov %cr0,%eax\r |
| 297 | push %eax\r |
| 6794a1b9 |
298 | \r |
| 299 | ## UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7#\r |
| 5ffcd257 |
300 | mov %dr7,%eax\r |
| 301 | push %eax\r |
| 6794a1b9 |
302 | ## clear Dr7 while executing debugger itself\r |
| 5ffcd257 |
303 | xor %eax, %eax\r |
| 304 | mov %eax,%dr7\r |
| 6794a1b9 |
305 | \r |
| 5ffcd257 |
306 | mov %dr6,%eax\r |
| 307 | push %eax\r |
| 6794a1b9 |
308 | ## insure all status bits in dr6 are clear...\r |
| 5ffcd257 |
309 | xor %eax, %eax\r |
| 310 | mov %eax,%dr6\r |
| 311 | \r |
| 312 | mov %dr3,%eax\r |
| 313 | push %eax\r |
| 314 | mov %dr2,%eax\r |
| 315 | push %eax\r |
| 316 | mov %dr1,%eax\r |
| 317 | push %eax\r |
| 318 | mov %dr0,%eax\r |
| 319 | push %eax\r |
| 320 | \r |
| 321 | ## FX_SAVE_STATE_IA32 FxSaveState;\r |
| 322 | sub $512,%esp\r |
| 323 | mov %esp,%edi\r |
| 6794a1b9 |
324 | fxsave (%edi)\r |
| 5ffcd257 |
325 | \r |
| 326 | ## UINT32 ExceptionData;\r |
| 6794a1b9 |
327 | pushl 2*4(%ebp)\r |
| 328 | \r |
| 329 | ## Prepare parameter and call\r |
| 5ffcd257 |
330 | mov %esp,%edx\r |
| 331 | push %edx\r |
| 332 | mov 1*4(%ebp),%eax\r |
| 333 | push %eax\r |
| 334 | cmpl $32,%eax\r |
| 6794a1b9 |
335 | jb CallException\r |
| 01f1138a |
336 | call ASM_PFX(TimerHandler)\r |
| 6794a1b9 |
337 | jmp ExceptionDone\r |
| 338 | CallException:\r |
| 01f1138a |
339 | call ASM_PFX(ExceptionHandler)\r |
| 6794a1b9 |
340 | ExceptionDone:\r |
| 5ffcd257 |
341 | addl $8,%esp\r |
| 6794a1b9 |
342 | \r |
| 343 | cli\r |
| 5ffcd257 |
344 | ## UINT32 ExceptionData;\r |
| 345 | addl $4,%esp\r |
| 346 | \r |
| 347 | ## FX_SAVE_STATE_IA32 FxSaveState;\r |
| 348 | mov %esp,%esi\r |
| 349 | fxrstor (%esi)\r |
| 350 | addl $512,%esp\r |
| 351 | \r |
| 352 | #; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r |
| 353 | pop %eax\r |
| 354 | mov %eax,%dr0\r |
| 355 | pop %eax\r |
| 356 | mov %eax,%dr1\r |
| 357 | pop %eax\r |
| 358 | mov %eax,%dr2\r |
| 359 | pop %eax\r |
| 360 | mov %eax,%dr3\r |
| 6794a1b9 |
361 | ## skip restore of dr6. We cleared dr6 during the context save.\r |
| 5ffcd257 |
362 | addl $4,%esp\r |
| 363 | pop %eax\r |
| 364 | mov %eax,%dr7\r |
| 365 | \r |
| 366 | ## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;\r |
| 367 | pop %eax\r |
| 368 | mov %eax,%cr0\r |
| 369 | addl $4,%esp # not for Cr1\r |
| 370 | pop %eax\r |
| 371 | mov %eax,%cr2\r |
| 372 | pop %eax\r |
| 373 | mov %eax,%cr3\r |
| 374 | pop %eax\r |
| 375 | mov %eax,%cr4\r |
| 376 | \r |
| 377 | ## UINT32 EFlags;\r |
| 378 | popl 5*4(%ebp)\r |
| 379 | \r |
| 380 | ## UINT32 Ldtr, Tr;\r |
| 381 | ## UINT32 Gdtr[2], Idtr[2];\r |
| 6794a1b9 |
382 | ## Best not let anyone mess with these particular registers...\r |
| 5ffcd257 |
383 | addl $24,%esp\r |
| 6794a1b9 |
384 | \r |
| 5ffcd257 |
385 | ## UINT32 Eip;\r |
| 386 | popl 3*4(%ebp)\r |
| 6794a1b9 |
387 | \r |
| 5ffcd257 |
388 | ## UINT32 Gs, Fs, Es, Ds, Cs, Ss;\r |
| 6794a1b9 |
389 | ## NOTE - modified segment registers could hang the debugger... We\r |
| 390 | ## could attempt to insulate ourselves against this possibility,\r |
| 391 | ## but that poses risks as well.\r |
| 392 | ##\r |
| 5ffcd257 |
393 | pop %gs\r |
| 394 | pop %fs\r |
| 395 | pop %es\r |
| 396 | pop %ds\r |
| 6794a1b9 |
397 | popl 4*4(%ebp)\r |
| 5ffcd257 |
398 | pop %ss\r |
| 6794a1b9 |
399 | \r |
| 5ffcd257 |
400 | ## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;\r |
| 401 | pop %edi\r |
| 402 | pop %esi\r |
| 403 | addl $4,%esp # not for ebp\r |
| 404 | addl $4,%esp # not for esp\r |
| 405 | pop %ebx\r |
| 406 | pop %edx\r |
| 407 | pop %ecx\r |
| 408 | pop %eax\r |
| 409 | \r |
| 410 | mov %ebp,%esp\r |
| 411 | pop %ebp\r |
| 412 | addl $8,%esp\r |
| 413 | iret\r |
| 414 | \r |
| 415 | \r |
| 416 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
417 | # data\r |
| 5ffcd257 |
418 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
419 | \r |
| 5ffcd257 |
420 | .data\r |
| 421 | .align 4\r |
| 422 | \r |
| 423 | gdtr: .short GDT_END - GDT_BASE - 1 # GDT limit\r |
| 424 | .long 0 # (GDT base gets set above)\r |
| 425 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
426 | # global descriptor table (GDT)\r |
| 5ffcd257 |
427 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
428 | \r |
| 5ffcd257 |
429 | .align 4\r |
| 6794a1b9 |
430 | \r |
| 6794a1b9 |
431 | GDT_BASE:\r |
| 5ffcd257 |
432 | # null descriptor\r |
| 433 | NULL_SEL = .-GDT_BASE\r |
| 434 | .short 0 # limit 15:0\r |
| 435 | .short 0 # base 15:0\r |
| 01f1138a |
436 | .byte 0 # base 23:16\r |
| 437 | .byte 0 # type\r |
| 438 | .byte 0 # limit 19:16, flags\r |
| 439 | .byte 0 # base 31:24\r |
| 5ffcd257 |
440 | \r |
| 441 | # linear data segment descriptor\r |
| 442 | LINEAR_SEL = .-GDT_BASE\r |
| 443 | .short 0x0FFFF # limit 0xFFFFF\r |
| 01f1138a |
444 | .short 0 # base 0\r |
| 5ffcd257 |
445 | .byte 0\r |
| 01f1138a |
446 | .byte 0x092 # present, ring 0, data, expand-up, writable\r |
| 447 | .byte 0x0CF # page-granular, 32-bit\r |
| 5ffcd257 |
448 | .byte 0\r |
| 449 | \r |
| 450 | # linear code segment descriptor\r |
| 451 | LINEAR_CODE_SEL = .-GDT_BASE\r |
| 452 | .short 0x0FFFF # limit 0xFFFFF\r |
| 01f1138a |
453 | .short 0 # base 0\r |
| 5ffcd257 |
454 | .byte 0\r |
| 01f1138a |
455 | .byte 0x09A # present, ring 0, data, expand-up, writable\r |
| 456 | .byte 0x0CF # page-granular, 32-bit\r |
| 5ffcd257 |
457 | .byte 0\r |
| 458 | \r |
| 459 | # system data segment descriptor\r |
| 460 | SYS_DATA_SEL = .-GDT_BASE\r |
| 461 | .short 0x0FFFF # limit 0xFFFFF\r |
| 01f1138a |
462 | .short 0 # base 0\r |
| 5ffcd257 |
463 | .byte 0\r |
| 01f1138a |
464 | .byte 0x092 # present, ring 0, data, expand-up, writable\r |
| 465 | .byte 0x0CF # page-granular, 32-bit\r |
| 5ffcd257 |
466 | .byte 0\r |
| 467 | \r |
| 468 | # system code segment descriptor\r |
| 469 | SYS_CODE_SEL = .-GDT_BASE\r |
| 470 | .short 0x0FFFF # limit 0xFFFFF\r |
| 01f1138a |
471 | .short 0 # base 0\r |
| 5ffcd257 |
472 | .byte 0\r |
| 01f1138a |
473 | .byte 0x09A # present, ring 0, data, expand-up, writable\r |
| 474 | .byte 0x0CF # page-granular, 32-bit\r |
| 5ffcd257 |
475 | .byte 0\r |
| 476 | \r |
| 477 | # spare segment descriptor\r |
| 478 | SPARE3_SEL = .-GDT_BASE\r |
| 479 | .short 0 # limit 0xFFFFF\r |
| 480 | .short 0 # base 0\r |
| 481 | .byte 0\r |
| 01f1138a |
482 | .byte 0 # present, ring 0, data, expand-up, writable\r |
| 483 | .byte 0 # page-granular, 32-bit\r |
| 5ffcd257 |
484 | .byte 0\r |
| 485 | \r |
| 486 | # spare segment descriptor\r |
| 487 | SPARE4_SEL = .-GDT_BASE\r |
| 488 | .short 0 # limit 0xFFFFF\r |
| 489 | .short 0 # base 0\r |
| 490 | .byte 0\r |
| 01f1138a |
491 | .byte 0 # present, ring 0, data, expand-up, writable\r |
| 492 | .byte 0 # page-granular, 32-bit\r |
| 5ffcd257 |
493 | .byte 0\r |
| 494 | \r |
| 495 | # spare segment descriptor\r |
| 496 | SPARE5_SEL = .-GDT_BASE\r |
| 497 | .short 0 # limit 0xFFFFF\r |
| 498 | .short 0 # base 0\r |
| 499 | .byte 0\r |
| 01f1138a |
500 | .byte 0 # present, ring 0, data, expand-up, writable\r |
| 501 | .byte 0 # page-granular, 32-bit\r |
| 5ffcd257 |
502 | .byte 0\r |
| 503 | \r |
| 504 | GDT_END:\r |
| 505 | \r |
| 506 | .align 4\r |
| 507 | \r |
| 508 | \r |
| 509 | \r |
| 510 | idtr: .short IDT_END - IDT_BASE - 1 # IDT limit\r |
| 01f1138a |
511 | .long 0 # (IDT base gets set above)\r |
| 5ffcd257 |
512 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
513 | # interrupt descriptor table (IDT)\r |
| 514 | #\r |
| 515 | # Note: The hardware IRQ's specified in this table are the normal PC/AT IRQ\r |
| 516 | # mappings. This implementation only uses the system timer and all other\r |
| 517 | # IRQs will remain masked. The descriptors for vectors 33+ are provided\r |
| 518 | # for convenience.\r |
| 5ffcd257 |
519 | #;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r |
| 6794a1b9 |
520 | \r |
| 5ffcd257 |
521 | #idt_tag .byte "IDT",0 \r |
| 522 | .align 4\r |
| 6794a1b9 |
523 | \r |
| 524 | IDT_BASE:\r |
| 6794a1b9 |
525 | # divide by zero (INT 0)\r |
| 5ffcd257 |
526 | DIV_ZERO_SEL = .-IDT_BASE\r |
| 527 | .short 0 # offset 15:0\r |
| 528 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
529 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
530 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 531 | .short 0 # offset 31:16\r |
| 6794a1b9 |
532 | \r |
| 533 | # debug exception (INT 1)\r |
| 5ffcd257 |
534 | DEBUG_EXCEPT_SEL = .-IDT_BASE\r |
| 535 | .short 0 # offset 15:0\r |
| 536 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
537 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
538 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 539 | .short 0 # offset 31:16\r |
| 6794a1b9 |
540 | \r |
| 541 | # NMI (INT 2)\r |
| 5ffcd257 |
542 | NMI_SEL = .-IDT_BASE\r |
| 543 | .short 0 # offset 15:0\r |
| 544 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
545 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
546 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 547 | .short 0 # offset 31:16\r |
| 6794a1b9 |
548 | \r |
| 549 | # soft breakpoint (INT 3)\r |
| 5ffcd257 |
550 | BREAKPOINT_SEL = .-IDT_BASE\r |
| 551 | .short 0 # offset 15:0\r |
| 552 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
553 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
554 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 555 | .short 0 # offset 31:16\r |
| 6794a1b9 |
556 | \r |
| 557 | # overflow (INT 4)\r |
| 5ffcd257 |
558 | OVERFLOW_SEL = .-IDT_BASE\r |
| 559 | .short 0 # offset 15:0\r |
| 560 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
561 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
562 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 563 | .short 0 # offset 31:16\r |
| 6794a1b9 |
564 | \r |
| 565 | # bounds check (INT 5)\r |
| 5ffcd257 |
566 | BOUNDS_CHECK_SEL = .-IDT_BASE\r |
| 567 | .short 0 # offset 15:0\r |
| 568 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
569 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
570 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 571 | .short 0 # offset 31:16\r |
| 6794a1b9 |
572 | \r |
| 573 | # invalid opcode (INT 6)\r |
| 5ffcd257 |
574 | INVALID_OPCODE_SEL = .-IDT_BASE\r |
| 575 | .short 0 # offset 15:0\r |
| 576 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
577 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
578 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 579 | .short 0 # offset 31:16\r |
| 6794a1b9 |
580 | \r |
| 581 | # device not available (INT 7)\r |
| 5ffcd257 |
582 | DEV_NOT_AVAIL_SEL = .-IDT_BASE\r |
| 583 | .short 0 # offset 15:0\r |
| 584 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
585 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
586 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 587 | .short 0 # offset 31:16\r |
| 6794a1b9 |
588 | \r |
| 589 | # double fault (INT 8)\r |
| 5ffcd257 |
590 | DOUBLE_FAULT_SEL = .-IDT_BASE\r |
| 591 | .short 0 # offset 15:0\r |
| 592 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
593 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
594 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 595 | .short 0 # offset 31:16\r |
| 6794a1b9 |
596 | \r |
| 597 | # Coprocessor segment overrun - reserved (INT 9)\r |
| 5ffcd257 |
598 | RSVD_INTR_SEL1 = .-IDT_BASE\r |
| 599 | .short 0 # offset 15:0\r |
| 600 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
601 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
602 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 603 | .short 0 # offset 31:16\r |
| 6794a1b9 |
604 | \r |
| 605 | # invalid TSS (INT 0ah)\r |
| 5ffcd257 |
606 | INVALID_TSS_SEL = .-IDT_BASE\r |
| 607 | .short 0 # offset 15:0\r |
| 608 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
609 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
610 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 611 | .short 0 # offset 31:16\r |
| 6794a1b9 |
612 | \r |
| 613 | # segment not present (INT 0bh)\r |
| 5ffcd257 |
614 | SEG_NOT_PRESENT_SEL = .-IDT_BASE\r |
| 615 | .short 0 # offset 15:0\r |
| 616 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
617 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
618 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 619 | .short 0 # offset 31:16\r |
| 6794a1b9 |
620 | \r |
| 621 | # stack fault (INT 0ch)\r |
| 5ffcd257 |
622 | STACK_FAULT_SEL = .-IDT_BASE\r |
| 623 | .short 0 # offset 15:0\r |
| 624 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
625 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
626 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 627 | .short 0 # offset 31:16\r |
| 6794a1b9 |
628 | \r |
| 629 | # general protection (INT 0dh)\r |
| 5ffcd257 |
630 | GP_FAULT_SEL = .-IDT_BASE\r |
| 631 | .short 0 # offset 15:0\r |
| 632 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
633 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
634 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 635 | .short 0 # offset 31:16\r |
| 6794a1b9 |
636 | \r |
| 637 | # page fault (INT 0eh)\r |
| 5ffcd257 |
638 | PAGE_FAULT_SEL = .-IDT_BASE\r |
| 639 | .short 0 # offset 15:0\r |
| 640 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
641 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
642 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 643 | .short 0 # offset 31:16\r |
| 6794a1b9 |
644 | \r |
| 645 | # Intel reserved - do not use (INT 0fh)\r |
| 5ffcd257 |
646 | RSVD_INTR_SEL2 = .-IDT_BASE\r |
| 647 | .short 0 # offset 15:0\r |
| 648 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
649 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
650 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 651 | .short 0 # offset 31:16\r |
| 652 | \r |
| 653 | # floating point error (INT 0x10)\r |
| 654 | FLT_POINT_ERR_SEL = .-IDT_BASE\r |
| 655 | .short 0 # offset 15:0\r |
| 656 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
657 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
658 | .byte 0x0e | 0x80 # type = 386 interrupt gate, present\r |
| 659 | .short 0 # offset 31:16\r |
| 660 | \r |
| 661 | # alignment check (INT 0x11)\r |
| 662 | ALIGNMENT_CHECK_SEL = .-IDT_BASE\r |
| 663 | .short 0 # offset 15:0\r |
| 664 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
665 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
666 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 667 | .short 0 # offset 31:16\r |
| 668 | \r |
| 669 | # machine check (INT 0x12)\r |
| 670 | MACHINE_CHECK_SEL = .-IDT_BASE\r |
| 671 | .short 0 # offset 15:0\r |
| 672 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
673 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
674 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 675 | .short 0 # offset 31:16\r |
| 676 | \r |
| 677 | # SIMD floating-point exception (INT 0x13)\r |
| 678 | SIMD_EXCEPTION_SEL = .-IDT_BASE\r |
| 679 | .short 0 # offset 15:0\r |
| 680 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
681 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
682 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 683 | .short 0 # offset 31:16\r |
| 684 | \r |
| 685 | .rept (32 - 20)\r |
| 686 | .short 0 # offset 15:0\r |
| 687 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
688 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
689 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 690 | .short 0 # offset 31:16\r |
| 691 | .endr\r |
| 6794a1b9 |
692 | \r |
| 693 | # 72 unspecified descriptors\r |
| 5ffcd257 |
694 | .rept 72 * 8\r |
| 695 | .byte 0\r |
| 696 | .endr\r |
| 6794a1b9 |
697 | \r |
| 5ffcd257 |
698 | # IRQ 0 (System timer) - (INT 0x68)\r |
| 699 | IRQ0_SEL = .-IDT_BASE\r |
| 700 | .short 0 # offset 15:0\r |
| 701 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
702 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
703 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 704 | .short 0 # offset 31:16\r |
| 705 | \r |
| 706 | # IRQ 1 (8042 Keyboard controller) - (INT 0x69)\r |
| 707 | IRQ1_SEL = .-IDT_BASE\r |
| 708 | .short 0 # offset 15:0\r |
| 709 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
710 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
711 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 712 | .short 0 # offset 31:16\r |
| 6794a1b9 |
713 | \r |
| 714 | # Reserved - IRQ 2 redirect (IRQ 2) - DO NOT USE!!! - (INT 6ah)\r |
| 5ffcd257 |
715 | IRQ2_SEL = .-IDT_BASE\r |
| 716 | .short 0 # offset 15:0\r |
| 717 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
718 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
719 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 720 | .short 0 # offset 31:16\r |
| 6794a1b9 |
721 | \r |
| 722 | # IRQ 3 (COM 2) - (INT 6bh)\r |
| 5ffcd257 |
723 | IRQ3_SEL = .-IDT_BASE\r |
| 724 | .short 0 # offset 15:0\r |
| 725 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
726 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
727 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 728 | .short 0 # offset 31:16\r |
| 6794a1b9 |
729 | \r |
| 730 | # IRQ 4 (COM 1) - (INT 6ch)\r |
| 5ffcd257 |
731 | IRQ4_SEL = .-IDT_BASE\r |
| 732 | .short 0 # offset 15:0\r |
| 733 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
734 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
735 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 736 | .short 0 # offset 31:16\r |
| 6794a1b9 |
737 | \r |
| 738 | # IRQ 5 (LPT 2) - (INT 6dh)\r |
| 5ffcd257 |
739 | IRQ5_SEL = .-IDT_BASE\r |
| 740 | .short 0 # offset 15:0\r |
| 741 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
742 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
743 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 744 | .short 0 # offset 31:16\r |
| 6794a1b9 |
745 | \r |
| 746 | # IRQ 6 (Floppy controller) - (INT 6eh)\r |
| 5ffcd257 |
747 | IRQ6_SEL = .-IDT_BASE\r |
| 748 | .short 0 # offset 15:0\r |
| 749 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
750 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
751 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 752 | .short 0 # offset 31:16\r |
| 6794a1b9 |
753 | \r |
| 754 | # IRQ 7 (LPT 1) - (INT 6fh)\r |
| 5ffcd257 |
755 | IRQ7_SEL = .-IDT_BASE\r |
| 756 | .short 0 # offset 15:0\r |
| 757 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
758 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
759 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 760 | .short 0 # offset 31:16\r |
| 761 | \r |
| 762 | # IRQ 8 (RTC Alarm) - (INT 0x70)\r |
| 763 | IRQ8_SEL = .-IDT_BASE\r |
| 764 | .short 0 # offset 15:0\r |
| 765 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
766 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
767 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 768 | .short 0 # offset 31:16\r |
| 769 | \r |
| 770 | # IRQ 9 - (INT 0x71)\r |
| 771 | IRQ9_SEL = .-IDT_BASE\r |
| 772 | .short 0 # offset 15:0\r |
| 773 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
774 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
775 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 776 | .short 0 # offset 31:16\r |
| 777 | \r |
| 778 | # IRQ 10 - (INT 0x72)\r |
| 779 | IRQ10_SEL = .-IDT_BASE\r |
| 780 | .short 0 # offset 15:0\r |
| 781 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
782 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
783 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 784 | .short 0 # offset 31:16\r |
| 785 | \r |
| 786 | # IRQ 11 - (INT 0x73)\r |
| 787 | IRQ11_SEL = .-IDT_BASE\r |
| 788 | .short 0 # offset 15:0\r |
| 789 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
790 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
791 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 792 | .short 0 # offset 31:16\r |
| 793 | \r |
| 794 | # IRQ 12 (PS/2 mouse) - (INT 0x74)\r |
| 795 | IRQ12_SEL = .-IDT_BASE\r |
| 796 | .short 0 # offset 15:0\r |
| 797 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
798 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
799 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 800 | .short 0 # offset 31:16\r |
| 801 | \r |
| 802 | # IRQ 13 (Floating point error) - (INT 0x75)\r |
| 803 | IRQ13_SEL = .-IDT_BASE\r |
| 804 | .short 0 # offset 15:0\r |
| 805 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
806 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
807 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 808 | .short 0 # offset 31:16\r |
| 809 | \r |
| 810 | # IRQ 14 (Secondary IDE) - (INT 0x76)\r |
| 811 | IRQ14_SEL = .-IDT_BASE\r |
| 812 | .short 0 # offset 15:0\r |
| 813 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
814 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
815 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 816 | .short 0 # offset 31:16\r |
| 817 | \r |
| 818 | # IRQ 15 (Primary IDE) - (INT 0x77)\r |
| 819 | IRQ15_SEL = .-IDT_BASE\r |
| 820 | .short 0 # offset 15:0\r |
| 821 | .short SYS_CODE_SEL # selector 15:0\r |
| 01f1138a |
822 | .byte 0 # 0 for interrupt gate\r |
| 5ffcd257 |
823 | .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present\r |
| 824 | .short 0 # offset 31:16\r |
| 825 | \r |
| 826 | .rept 1 * 8\r |
| 827 | .byte 0\r |
| 828 | .endr\r |
| 829 | \r |
| 6794a1b9 |
830 | IDT_END:\r |
| 5ffcd257 |
831 | \r |
projects / mirror_edk2.git / blame