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-rw-r--r--DuetPkg/CpuDxe/Ia32/CpuInterrupt.S961
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diff --git a/DuetPkg/CpuDxe/Ia32/CpuInterrupt.S b/DuetPkg/CpuDxe/Ia32/CpuInterrupt.S
deleted file mode 100644
index 945dcf666..000000000
--- a/DuetPkg/CpuDxe/Ia32/CpuInterrupt.S
+++ /dev/null
@@ -1,961 +0,0 @@
-#------------------------------------------------------------------------------
-#*
-#* Copyright (c) 2006, 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.
-#*
-#* CpuInterrupt.S
-#*
-#* Abstract:
-#*
-#------------------------------------------------------------------------------
-
-#PUBLIC SystemTimerHandler
-#PUBLIC SystemExceptionHandler
-#EXTERNDEF mExceptionCodeSize:DWORD
-
-#EXTERN TimerHandler: NEAR
-#EXTERN ExceptionHandler: NEAR
-#EXTERN mTimerVector: DWORD
-
- .data
- ASM_GLOBAL ASM_PFX(mExceptionCodeSize)
-ASM_PFX(mExceptionCodeSize): .long 9
-
- .text
- ASM_GLOBAL ASM_PFX(InitDescriptor)
-
-ASM_PFX(InitDescriptor):
- movl $GDT_BASE,%eax # EAX=PHYSICAL address of gdt
- movl %eax, gdtr + 2 # Put address of gdt into the gdtr
- lgdt gdtr
- movl $IDT_BASE,%eax # EAX=PHYSICAL address of idt
- movl %eax, idtr + 2 # Put address of idt into the idtr
- lidt idtr
- ret
-
-# VOID
-# InstallInterruptHandler (
-# UINTN Vector,
-# VOID (*Handler)(VOID)
-# )
- ASM_GLOBAL ASM_PFX(InstallInterruptHandler)
-ASM_PFX(InstallInterruptHandler):
-# Vector:DWORD @ 4(%esp)
-# Handler:DWORD @ 8(%esp)
-
- push %edi
- pushf # save eflags
- cli # turn off interrupts
- subl $6,%esp # open some space on the stack
- movl %esp,%edi
- sidt (%edi) # get fword address of IDT
- movl 2(%edi), %edi # move offset of IDT into EDI
- addl $6,%esp # correct stack
- movl 12(%esp),%eax # Get vector number
- shl $3,%eax # multiply by 8 to get offset
- addl %eax,%edi # add to IDT base to get entry
- movl 16(%esp),%eax # load new address into IDT entry
- movw %ax,(%edi) # write bits 15..0 of offset
- shrl $16,%eax # use ax to copy 31..16 to descriptors
- movw %ax,6(%edi) # write bits 31..16 of offset
- popf # restore flags (possible enabling interrupts)
- pop %edi
- ret
-
- .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 reletive
- .long commonIdtEntry - . - 4 # offset to jump to
- .endm
-
- .p2align 1
- ASM_GLOBAL ASM_PFX(SystemExceptionHandler)
-ASM_PFX(SystemExceptionHandler):
-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 (32 - 20) times:
- # No. 1
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 2
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 3
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 4
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 5
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 6
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 7
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 8
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 9
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 10
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 11
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
- # No. 12
- pushl $0x0 # push error code place holder on the stack
-# push xxh # push vector number
- .byte 0x6a
- .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
- JmpCommonIdtEntry
-
-
- ASM_GLOBAL ASM_PFX(SystemTimerHandler)
-ASM_PFX(SystemTimerHandler):
- pushl $0
- pushl $ASM_PFX(mTimerVector)
- JmpCommonIdtEntry
-
-commonIdtEntry:
-# +---------------------+
-# + EFlags +
-# +---------------------+
-# + CS +
-# +---------------------+
-# + EIP +
-# +---------------------+
-# + Error Code +
-# +---------------------+
-# + Vector Number +
-# +---------------------+
-# + EBP +
-# +---------------------+ <-- EBP
-
- cli
- push %ebp
- movl %esp,%ebp
-
- #
- # Align stack to make sure that EFI_FX_SAVE_STATE_IA32 of EFI_SYSTEM_CONTEXT_IA32
- # is 16-byte aligned
- #
- andl $0xfffffff0,%esp
- subl $12,%esp
-
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax#
- push %eax
- push %ecx
- push %edx
- push %ebx
- leal 6*4(%ebp),%ecx
- push %ecx # ESP
- push (%ebp) # EBP
- push %esi
- push %edi
-
-## UINT32 Gs, Fs, Es, Ds, Cs, Ss#
- movw %ss,%ax
- push %eax
- movzx 4*4(%ebp),%eax
- push %eax
- movw %ds,%ax
- push %eax
- movw %es,%ax
- push %eax
- movw %fs,%ax
- push %eax
- movw %gs,%ax
- push %eax
-
-## UINT32 Eip#
- pushl 3*4(%ebp)
-
-## UINT32 Gdtr[2], Idtr[2]#
- subl $8,%esp
- sidt (%esp)
- subl $8,%esp
- sgdt (%esp)
-
-## UINT32 Ldtr, Tr#
- xorl %eax, %eax
- str %ax
- push %eax
- sldt %eax
- push %eax
-
-## UINT32 EFlags#
- pushl 5*4(%ebp)
-
-## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4#
- mov %cr4,%eax
- orl $0x208,%eax
- mov %eax,%cr4
- push %eax
- mov %cr3,%eax
- push %eax
- mov %cr2,%eax
- push %eax
- xor %eax, %eax
- push %eax
- mov %cr0,%eax
- push %eax
-
-## UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7#
- mov %dr7,%eax
- push %eax
-## clear Dr7 while executing debugger itself
- xor %eax, %eax
- mov %eax,%dr7
-
- mov %dr6,%eax
- push %eax
-## insure all status bits in dr6 are clear...
- xor %eax, %eax
- mov %eax,%dr6
-
- mov %dr3,%eax
- push %eax
- mov %dr2,%eax
- push %eax
- mov %dr1,%eax
- push %eax
- mov %dr0,%eax
- push %eax
-
-## FX_SAVE_STATE_IA32 FxSaveState;
- sub $512,%esp
- mov %esp,%edi
- fxsave (%edi)
-
-## UINT32 ExceptionData;
- pushl 2*4(%ebp)
-
-## Prepare parameter and call
- mov %esp,%edx
- push %edx
- mov 1*4(%ebp),%eax
- push %eax
- cmpl $32,%eax
- jb CallException
- call ASM_PFX(TimerHandler)
- jmp ExceptionDone
-CallException:
- call ASM_PFX(ExceptionHandler)
-ExceptionDone:
- addl $8,%esp
-
- cli
-## UINT32 ExceptionData;
- addl $4,%esp
-
-## FX_SAVE_STATE_IA32 FxSaveState;
- mov %esp,%esi
- fxrstor (%esi)
- addl $512,%esp
-
-#; UINT32 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;
- pop %eax
- mov %eax,%dr0
- pop %eax
- mov %eax,%dr1
- pop %eax
- mov %eax,%dr2
- pop %eax
- mov %eax,%dr3
-## skip restore of dr6. We cleared dr6 during the context save.
- addl $4,%esp
- pop %eax
- mov %eax,%dr7
-
-## UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;
- pop %eax
- mov %eax,%cr0
- addl $4,%esp # not for Cr1
- pop %eax
- mov %eax,%cr2
- pop %eax
- mov %eax,%cr3
- pop %eax
- mov %eax,%cr4
-
-## UINT32 EFlags;
- popl 5*4(%ebp)
-
-## UINT32 Ldtr, Tr;
-## UINT32 Gdtr[2], Idtr[2];
-## Best not let anyone mess with these particular registers...
- addl $24,%esp
-
-## UINT32 Eip;
- popl 3*4(%ebp)
-
-## UINT32 Gs, Fs, Es, Ds, Cs, Ss;
-## NOTE - modified segment registers could hang the debugger... We
-## could attempt to insulate ourselves against this possibility,
-## but that poses risks as well.
-##
- pop %gs
- pop %fs
- pop %es
- pop %ds
- popl 4*4(%ebp)
- pop %ss
-
-## UINT32 Edi, Esi, Ebp, Esp, Ebx, Edx, Ecx, Eax;
- pop %edi
- pop %esi
- addl $4,%esp # not for ebp
- addl $4,%esp # not for esp
- pop %ebx
- pop %edx
- pop %ecx
- pop %eax
-
- mov %ebp,%esp
- pop %ebp
- addl $8,%esp
- iret
-
-
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-# data
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- .data
- .p2align 2
-
-gdtr: .short GDT_END - GDT_BASE - 1 # GDT limit
- .long 0 # (GDT base gets set above)
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-# global descriptor table (GDT)
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- .p2align 2
-
-GDT_BASE:
-# null descriptor
-NULL_SEL = .-GDT_BASE
- .short 0 # limit 15:0
- .short 0 # base 15:0
- .byte 0 # base 23:16
- .byte 0 # type
- .byte 0 # limit 19:16, flags
- .byte 0 # base 31:24
-
-# linear data segment descriptor
-LINEAR_SEL = .-GDT_BASE
- .short 0x0FFFF # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0x092 # present, ring 0, data, expand-up, writable
- .byte 0x0CF # page-granular, 32-bit
- .byte 0
-
-# linear code segment descriptor
-LINEAR_CODE_SEL = .-GDT_BASE
- .short 0x0FFFF # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0x09A # present, ring 0, data, expand-up, writable
- .byte 0x0CF # page-granular, 32-bit
- .byte 0
-
-# system data segment descriptor
-SYS_DATA_SEL = .-GDT_BASE
- .short 0x0FFFF # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0x092 # present, ring 0, data, expand-up, writable
- .byte 0x0CF # page-granular, 32-bit
- .byte 0
-
-# system code segment descriptor
-SYS_CODE_SEL = .-GDT_BASE
- .short 0x0FFFF # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0x09A # present, ring 0, data, expand-up, writable
- .byte 0x0CF # page-granular, 32-bit
- .byte 0
-
-# spare segment descriptor
-SPARE3_SEL = .-GDT_BASE
- .short 0 # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0 # present, ring 0, data, expand-up, writable
- .byte 0 # page-granular, 32-bit
- .byte 0
-
-# spare segment descriptor
-SPARE4_SEL = .-GDT_BASE
- .short 0 # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0 # present, ring 0, data, expand-up, writable
- .byte 0 # page-granular, 32-bit
- .byte 0
-
-# spare segment descriptor
-SPARE5_SEL = .-GDT_BASE
- .short 0 # limit 0xFFFFF
- .short 0 # base 0
- .byte 0
- .byte 0 # present, ring 0, data, expand-up, writable
- .byte 0 # page-granular, 32-bit
- .byte 0
-
-GDT_END:
-
- .p2align 2
-
-
-
-idtr: .short IDT_END - IDT_BASE - 1 # IDT limit
- .long 0 # (IDT base gets set above)
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-# interrupt descriptor table (IDT)
-#
-# Note: The hardware IRQ's specified in this table are the normal PC/AT IRQ
-# mappings. This implementation only uses the system timer and all other
-# IRQs will remain masked. The descriptors for vectors 33+ are provided
-# for convenience.
-#;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-#idt_tag .byte "IDT",0
- .p2align 2
-
-IDT_BASE:
-# divide by zero (INT 0)
-DIV_ZERO_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# debug exception (INT 1)
-DEBUG_EXCEPT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# NMI (INT 2)
-NMI_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# soft breakpoint (INT 3)
-BREAKPOINT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# overflow (INT 4)
-OVERFLOW_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# bounds check (INT 5)
-BOUNDS_CHECK_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# invalid opcode (INT 6)
-INVALID_OPCODE_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# device not available (INT 7)
-DEV_NOT_AVAIL_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# double fault (INT 8)
-DOUBLE_FAULT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# Coprocessor segment overrun - reserved (INT 9)
-RSVD_INTR_SEL1 = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# invalid TSS (INT 0ah)
-INVALID_TSS_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# segment not present (INT 0bh)
-SEG_NOT_PRESENT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# stack fault (INT 0ch)
-STACK_FAULT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# general protection (INT 0dh)
-GP_FAULT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# page fault (INT 0eh)
-PAGE_FAULT_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# Intel reserved - do not use (INT 0fh)
-RSVD_INTR_SEL2 = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# floating point error (INT 0x10)
-FLT_POINT_ERR_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# alignment check (INT 0x11)
-ALIGNMENT_CHECK_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# machine check (INT 0x12)
-MACHINE_CHECK_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# SIMD floating-point exception (INT 0x13)
-SIMD_EXCEPTION_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
- # The following segment repeats (32 - 20) times:
- # No. 1
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 2
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 3
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 4
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 5
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 6
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 7
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 8
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 9
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 10
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 11
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
- # No. 12
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-
-# 72 unspecified descriptors
- .fill 72 * 8, 1, 0
-
-# IRQ 0 (System timer) - (INT 0x68)
-IRQ0_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 1 (8042 Keyboard controller) - (INT 0x69)
-IRQ1_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# Reserved - IRQ 2 redirect (IRQ 2) - DO NOT USE!!! - (INT 6ah)
-IRQ2_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 3 (COM 2) - (INT 6bh)
-IRQ3_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 4 (COM 1) - (INT 6ch)
-IRQ4_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 5 (LPT 2) - (INT 6dh)
-IRQ5_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 6 (Floppy controller) - (INT 6eh)
-IRQ6_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 7 (LPT 1) - (INT 6fh)
-IRQ7_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 8 (RTC Alarm) - (INT 0x70)
-IRQ8_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 9 - (INT 0x71)
-IRQ9_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 10 - (INT 0x72)
-IRQ10_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 11 - (INT 0x73)
-IRQ11_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 12 (PS/2 mouse) - (INT 0x74)
-IRQ12_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 13 (Floating point error) - (INT 0x75)
-IRQ13_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 14 (Secondary IDE) - (INT 0x76)
-IRQ14_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
-# IRQ 15 (Primary IDE) - (INT 0x77)
-IRQ15_SEL = .-IDT_BASE
- .short 0 # offset 15:0
- .short SYS_CODE_SEL # selector 15:0
- .byte 0 # 0 for interrupt gate
- .byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
- .short 0 # offset 31:16
-
- .fill 1 * 8, 1, 0
-
-IDT_END:
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 17:14:45 +0000