| #------------------------------------------------------------------------------ | |
| #* | |
| #* Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> | |
| #* This program and the accompanying materials | |
| #* are licensed and made available under the terms and conditions of the BSD License | |
| #* which accompanies this distribution. The full text of the license may be found at | |
| #* http://opensource.org/licenses/bsd-license.php | |
| #* | |
| #* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| #* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| #* | |
| #* efi32.asm | |
| #* | |
| #* Abstract: | |
| #* | |
| #------------------------------------------------------------------------------ | |
| ############################################################################## | |
| # Now in 32-bit protected mode. | |
| ############################################################################## | |
| .org 0x21000 | |
| .global _start | |
| _start: | |
| .equ DEFAULT_HANDLER_SIZE, INT1 - INT0 | |
| .macro jmpCommonIdtEntry | |
| # jmp commonIdtEntry - this must be hand coded to keep the assembler from | |
| # using a 8 bit reletive jump when the entries are | |
| # within 255 bytes of the common entry. This must | |
| # be done to maintain the consistency of the size | |
| # of entry points... | |
| .byte 0xe9 # jmp 16 bit relative | |
| .long commonIdtEntry - . - 4 # offset to jump to | |
| .endm | |
| Start: | |
| movw %bx, %ax | |
| movw %ax, %ds | |
| movw %ax, %es | |
| movw %ax, %fs | |
| movw %ax, %gs | |
| movw %ax, %ss | |
| movl $0x001ffff0, %esp | |
| call ClearScreen | |
| # Populate IDT with meaningful offsets for exception handlers... | |
| sidt Idtr | |
| movl Halt, %eax | |
| movl %eax, %ebx # use bx to copy 15..0 to descriptors | |
| shrl $16, %eax # use ax to copy 31..16 to descriptors | |
| movl $0x78, %ecx # 78h IDT entries to initialize with unique entry points (exceptions) | |
| movl (Idtr + 2), %esi | |
| movl (%esi), %edi | |
| LOOP_1: # loop through all IDT entries exception handlers and initialize to default handler | |
| movw %bx, (%edi) # write bits 15..0 of offset | |
| movw $0x20, 2(%edi) # SYS_CODE_SEL from GDT | |
| movw $(0x0e00 | 0x8000), 4(%edi) # type = 386 interrupt gate, present | |
| movw %ax, 6(%edi) # write bits 31..16 of offset | |
| addl $8, %edi # move up to next descriptor | |
| addw DEFAULT_HANDLER_SIZE, %bx # move to next entry point | |
| loopl LOOP_1 # loop back through again until all descriptors are initialized | |
| ## at this point edi contains the offset of the descriptor for INT 20 | |
| ## and bx contains the low 16 bits of the offset of the default handler | |
| ## so initialize all the rest of the descriptors with these two values... | |
| # mov ecx, 101 ; there are 100 descriptors left (INT 20 (14h) - INT 119 (77h) | |
| #@@: ; loop through all IDT entries exception handlers and initialize to default handler | |
| # mov word ptr [edi], bx ; write bits 15..0 of offset | |
| # mov word ptr [edi+2], 20h ; SYS_CODE_SEL from GDT | |
| # mov word ptr [edi+4], 0e00h OR 8000h ; type = 386 interrupt gate, present | |
| # mov word ptr [edi+6], ax ; write bits 31..16 of offset | |
| # add edi, 8 ; move up to next descriptor | |
| # loop @b ; loop back through again until all descriptors are initialized | |
| ## DUMP location of IDT and several of the descriptors | |
| # mov ecx, 8 | |
| # mov eax, [offset Idtr + 2] | |
| # mov eax, [eax] | |
| # mov edi, 0b8000h | |
| # call PrintDword | |
| # mov esi, eax | |
| # mov edi, 0b80a0h | |
| # jmp OuterLoop | |
| ## | |
| ## just for fun, let's do a software interrupt to see if we correctly land in the exception handler... | |
| # mov eax, 011111111h | |
| # mov ebx, 022222222h | |
| # mov ecx, 033333333h | |
| # mov edx, 044444444h | |
| # mov ebp, 055555555h | |
| # mov esi, 066666666h | |
| # mov edi, 077777777h | |
| # push 011111111h | |
| # push 022222222h | |
| # push 033333333h | |
| # int 119 | |
| movl $0x22000, %esi # esi = 22000 | |
| movl 0x14(%esi), %eax # eax = [22014] | |
| addl %eax, %esi # esi = 22000 + [22014] = Base of EFILDR.C | |
| movl 0x3c(%esi), %ebp # ebp = [22000 + [22014] + 3c] = NT Image Header for EFILDR.C | |
| addl %esi, %ebp | |
| movl 0x34(%ebp), %edi # edi = [[22000 + [22014] + 3c] + 30] = ImageBase | |
| movl 0x28(%ebp), %eax # eax = [[22000 + [22014] + 3c] + 24] = EntryPoint | |
| addl %edi, %eax # eax = ImageBase + EntryPoint | |
| movl %eax, EfiLdrOffset # Modify far jump instruction for correct entry point | |
| movw 6(%ebp), %bx # bx = Number of sections | |
| xorl %eax, %eax | |
| movw 0x14(%ebp), %ax # ax = Optional Header Size | |
| addl %eax, %ebp | |
| addl $0x18, %ebp # ebp = Start of 1st Section | |
| SectionLoop: | |
| pushl %esi # Save Base of EFILDR.C | |
| pushl %edi # Save ImageBase | |
| addl 0x14(%ebp), %esi # esi = Base of EFILDR.C + PointerToRawData | |
| addl 0x0c(%ebp), %edi # edi = ImageBase + VirtualAddress | |
| movl 0x10(%ebp), %ecx # ecs = SizeOfRawData | |
| cld | |
| shrl $2, %ecx | |
| rep | |
| movsl | |
| popl %edi # Restore ImageBase | |
| popl %esi # Restore Base of EFILDR.C | |
| addw $0x28, %bp # ebp = ebp + 028h = Pointer to next section record | |
| decw %bx | |
| cmpw $0, %bx | |
| jne SectionLoop | |
| movzwl (Idtr), %eax # get size of IDT | |
| incl %eax | |
| addl (Idtr + 2), %eax # add to base of IDT to get location of memory map... | |
| pushl %eax # push memory map location on stack for call to EFILDR... | |
| pushl %eax # push return address (useless, just for stack balance) | |
| .byte 0xb8 | |
| EfiLdrOffset: | |
| .long 0x00401000 # Offset of EFILDR | |
| # mov eax, 401000h | |
| pushl %eax | |
| ret | |
| # db "**** DEFAULT IDT ENTRY ***",0 | |
| .p2align 1 | |
| Halt: | |
| INT0: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x0 | |
| jmpCommonIdtEntry | |
| # db 0e9h ; jmp 16 bit reletive | |
| # dd commonIdtEntry - $ - 4 ; offset to jump to | |
| INT1: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x1 | |
| jmpCommonIdtEntry | |
| INT2: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x2 | |
| jmpCommonIdtEntry | |
| INT3: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x3 | |
| jmpCommonIdtEntry | |
| INT4: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x4 | |
| jmpCommonIdtEntry | |
| INT5: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x5 | |
| jmpCommonIdtEntry | |
| INT6: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x6 | |
| jmpCommonIdtEntry | |
| INT7: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x7 | |
| jmpCommonIdtEntry | |
| INT8: | |
| # Double fault causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $0x8 | |
| jmpCommonIdtEntry | |
| INT9: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $0x9 | |
| jmpCommonIdtEntry | |
| INT10: | |
| # Invalid TSS causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $10 | |
| jmpCommonIdtEntry | |
| INT11: | |
| # Segment Not Present causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $11 | |
| jmpCommonIdtEntry | |
| INT12: | |
| # Stack fault causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $12 | |
| jmpCommonIdtEntry | |
| INT13: | |
| # GP fault causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $13 | |
| jmpCommonIdtEntry | |
| INT14: | |
| # Page fault causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $14 | |
| jmpCommonIdtEntry | |
| INT15: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $15 | |
| jmpCommonIdtEntry | |
| INT16: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $16 | |
| jmpCommonIdtEntry | |
| INT17: | |
| # Alignment check causes an error code to be pushed so no phony push necessary | |
| nop | |
| nop | |
| pushl $17 | |
| jmpCommonIdtEntry | |
| INT18: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $18 | |
| jmpCommonIdtEntry | |
| INT19: | |
| pushl $0x0 # push error code place holder on the stack | |
| pushl $19 | |
| jmpCommonIdtEntry | |
| INTUnknown: | |
| # The following segment repeats (0x78 - 20) times: | |
| # No. 1 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 2 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 3 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 4 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 5 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 6 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 7 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 8 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 9 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 10 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 11 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 12 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 13 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 14 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 15 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 16 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 17 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 18 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 19 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 20 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 21 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 22 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 23 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 24 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 25 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 26 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 27 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 28 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 29 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 30 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 31 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 32 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 33 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 34 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 35 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 36 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 37 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 38 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 39 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 40 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 41 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 42 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 43 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 44 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 45 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 46 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 47 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 48 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 49 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 50 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 51 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 52 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 53 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 54 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 55 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 56 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 57 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 58 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 59 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 60 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 61 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 62 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 63 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 64 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 65 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 66 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 67 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 68 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 69 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 70 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 71 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 72 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 73 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 74 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 75 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 76 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 77 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 78 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 79 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 80 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 81 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 82 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 83 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 84 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 85 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 86 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 87 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 88 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 89 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 90 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 91 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 92 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 93 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 94 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 95 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 96 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 97 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 98 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 99 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| # No. 100 | |
| pushl $0x0 # push error code place holder on the stack | |
| # push $0xxx # push vector number | |
| .byte 0x6a | |
| .long ( . - INTUnknown - 3 ) / 9 + 20 # vector number | |
| jmpCommonIdtEntry | |
| commonIdtEntry: | |
| pushal | |
| movl %esp, %ebp | |
| ## | |
| ## At this point the stack looks like this: | |
| ## | |
| ## eflags | |
| ## Calling CS | |
| ## Calling EIP | |
| ## Error code or 0 | |
| ## Int num or 0ffh for unknown int num | |
| ## eax | |
| ## ecx | |
| ## edx | |
| ## ebx | |
| ## esp | |
| ## ebp | |
| ## esi | |
| ## edi <------- ESP, EBP | |
| ## | |
| call ClearScreen | |
| movl String1, %esi | |
| call PrintString | |
| movl 32(%ebp), %eax ## move Int number into EAX | |
| cmpl $19, %eax | |
| ja PrintDefaultString | |
| PrintExceptionString: | |
| shll $2, %eax ## multiply by 4 to get offset from StringTable to actual string address | |
| addl StringTable, %eax | |
| movl (%eax), %esi | |
| jmp PrintTheString | |
| PrintDefaultString: | |
| movl IntUnknownString, %esi | |
| # patch Int number | |
| movl %eax, %edx | |
| call A2C | |
| movb %al, 1(%esi) | |
| movl %edx, %eax | |
| shrl $4, %eax | |
| call A2C | |
| movb %al, (%esi) | |
| PrintTheString: | |
| call PrintString | |
| movl String2, %esi | |
| call PrintString | |
| movl 44(%ebp), %eax # CS | |
| call PrintDword | |
| movb ':', %al | |
| movb %al, (%edi) | |
| addl $2, %edi | |
| movl 40(%ebp), %eax # EIP | |
| call PrintDword | |
| movl String3, %esi | |
| call PrintString | |
| movl $0xb8140, %edi | |
| movl StringEax, %esi # eax | |
| call PrintString | |
| movl 28(%ebp), %eax | |
| call PrintDword | |
| movl StringEbx, %esi # ebx | |
| call PrintString | |
| movl 16(%ebp), %eax | |
| call PrintDword | |
| movl StringEcx, %esi # ecx | |
| call PrintString | |
| movl 24(%ebp), %eax | |
| call PrintDword | |
| movl StringEdx, %esi # edx | |
| call PrintString | |
| movl 20(%ebp), %eax | |
| call PrintDword | |
| movl StringEcode, %esi # error code | |
| call PrintString | |
| movl 36(%ebp), %eax | |
| call PrintDword | |
| movl $0xb81e0, %edi | |
| movl StringEsp, %esi # esp | |
| call PrintString | |
| movl 12(%ebp), %eax | |
| call PrintDword | |
| movl StringEbp, %esi # ebp | |
| call PrintString | |
| movl 8(%ebp), %eax | |
| call PrintDword | |
| movl StringEsi, %esi # esi | |
| call PrintString | |
| movl 4(%ebp), %eax | |
| call PrintDword | |
| movl StringEdi, %esi # edi | |
| call PrintString | |
| movl (%ebp), %eax | |
| call PrintDword | |
| movl StringEflags, %esi # eflags | |
| call PrintString | |
| movl 48(%ebp), %eax | |
| call PrintDword | |
| movl $0xb8320, %edi | |
| movl %ebp, %esi | |
| addl $52, %esi | |
| movl $8, %ecx | |
| OuterLoop: | |
| pushl %ecx | |
| movl $8, %ecx | |
| movl %edi, %edx | |
| InnerLoop: | |
| movl (%esi), %eax | |
| call PrintDword | |
| addl $4, %esi | |
| movb ' ', %al | |
| movb %al, (%edi) | |
| addl $2, %edi | |
| loop InnerLoop | |
| popl %ecx | |
| addl $0xa0, %edx | |
| movl %edx, %edi | |
| loop OuterLoop | |
| movl $0xb8960, %edi | |
| movl 40(%ebp), %eax # EIP | |
| subl $32*4, %eax | |
| movl %eax, %esi # esi = eip - 32 DWORD linear (total 64 DWORD) | |
| movl $8, %ecx | |
| OuterLoop1: | |
| pushl %ecx | |
| movl $8, %ecx | |
| movl %edi, %edx | |
| InnerLoop1: | |
| movl (%esi), %eax | |
| call PrintDword | |
| addl $4, %esi | |
| movb ' ', %al | |
| movb %al, (%edi) | |
| addl $2, %edi | |
| loop InnerLoop1 | |
| popl %ecx | |
| addl $0xa0, %edx | |
| movl %edx, %edi | |
| loop OuterLoop1 | |
| # wbinvd ; this intruction does not support in early than 486 arch | |
| LN_C1: | |
| jmp LN_C1 | |
| # | |
| # return | |
| # | |
| movl %ebp, %esp | |
| popal | |
| addl $8, %esp # error code and INT number | |
| iretl | |
| PrintString: | |
| pushl %eax | |
| LN_C2: | |
| movb (%esi), %al | |
| cmpb $0, %al | |
| je LN_C3 | |
| movb %al, (%edi) | |
| incl %esi | |
| addl $2, %edi | |
| jmp LN_C2 | |
| LN_C3: | |
| popl %eax | |
| ret | |
| ## EAX contains dword to print | |
| ## EDI contains memory location (screen location) to print it to | |
| PrintDword: | |
| pushl %ecx | |
| pushl %ebx | |
| pushl %eax | |
| movl $8, %ecx | |
| looptop: | |
| roll $4, %eax | |
| movb %al, %bl | |
| andb $0xf, %bl | |
| addb '0', %bl | |
| cmpb '9', %bl | |
| jle LN_C4 | |
| addb $7, %bl | |
| LN_C4: | |
| movb %bl, (%edi) | |
| addl $2, %edi | |
| loop looptop | |
| #wbinvd | |
| popl %eax | |
| popl %ebx | |
| popl %ecx | |
| ret | |
| ClearScreen: | |
| pushl %eax | |
| pushl %ecx | |
| movb $0x00, %al | |
| movb $0xc, %ah | |
| movl $0xb8000, %edi | |
| movl $80*24, %ecx | |
| LN_C5: | |
| movw %ax, (%edi) | |
| addl $2, %edi | |
| loop LN_C5 | |
| movl $0xb8000, %edi | |
| popl %ecx | |
| popl %eax | |
| ret | |
| A2C: | |
| andb $0xf, %al | |
| addb '0', %al | |
| cmpb '9', %al | |
| jle LN_C6 | |
| addb $7, %al | |
| LN_C6: | |
| ret | |
| String1: .asciz "*** INT " | |
| Int0String: .asciz "00h Divide by 0 -" | |
| Int1String: .asciz "01h Debug exception -" | |
| Int2String: .asciz "02h NMI -" | |
| Int3String: .asciz "03h Breakpoint -" | |
| Int4String: .asciz "04h Overflow -" | |
| Int5String: .asciz "05h Bound -" | |
| Int6String: .asciz "06h Invalid opcode -" | |
| Int7String: .asciz "07h Device not available -" | |
| Int8String: .asciz "08h Double fault -" | |
| Int9String: .asciz "09h Coprocessor seg overrun (reserved) -" | |
| Int10String: .asciz "0Ah Invalid TSS -" | |
| Int11String: .asciz "0Bh Segment not present -" | |
| Int12String: .asciz "0Ch Stack fault -" | |
| Int13String: .asciz "0Dh General protection fault -" | |
| Int14String: .asciz "0Eh Page fault -" | |
| Int15String: .asciz "0Fh (Intel reserved) -" | |
| Int16String: .asciz "10h Floating point error -" | |
| Int17String: .asciz "11h Alignment check -" | |
| Int18String: .asciz "12h Machine check -" | |
| Int19String: .asciz "13h SIMD Floating-Point Exception -" | |
| IntUnknownString: .asciz "??h Unknown interrupt -" | |
| StringTable: .long Int0String, Int1String, Int2String, Int3String, \ | |
| Int4String, Int5String, Int6String, Int7String, \ | |
| Int8String, Int9String, Int10String, Int11String, \ | |
| Int12String, Int13String, Int14String, Int15String,\ | |
| Int16String, Int17String, Int18String, Int19String | |
| String2: .asciz " HALT!! *** (" | |
| String3: .asciz ")" | |
| StringEax: .asciz "EAX=" | |
| StringEbx: .asciz "EBX=" | |
| StringEcx: .asciz "ECX=" | |
| StringEdx: .asciz "EDX=" | |
| StringEcode: .asciz "ECODE=" | |
| StringEsp: .asciz "ESP=" | |
| StringEbp: .asciz "EBP=" | |
| StringEsi: .asciz "ESI=" | |
| StringEdi: .asciz "EDI=" | |
| StringEflags: .asciz "EFLAGS=" | |
| Idtr: .float 0 | |
| .org 0x21ffe | |
| BlockSignature: | |
| .word 0xaa55 | |