mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
1104 lines
37 KiB
ArmAsm
1104 lines
37 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#*
|
|
#* Copyright 2006 - 2010, Intel Corporation
|
|
#* All rights reserved. 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
|
|
|
|
#.text
|
|
ASM_GLOBAL ASM_PFX(InitDescriptor)
|
|
|
|
ASM_PFX(InitDescriptor):
|
|
leaq GDT_BASE(%rip),%rax # RAX=PHYSICAL address of gdt
|
|
movq %rax, (gdtr + 2)(%rip) # Put address of gdt into the gdtr
|
|
lgdt gdtr(%rip)
|
|
|
|
movl $0x18, %eax
|
|
movl %eax, %gs
|
|
movl %eax, %fs
|
|
|
|
leaq IDT_BASE(%rip),%rax # RAX=PHYSICAL address of idt
|
|
movq %rax, (idtr + 2)(%rip) # Put address of idt into the idtr
|
|
lidt idtr(%rip)
|
|
ret
|
|
|
|
# VOID
|
|
# EFIAPI
|
|
# InstallInterruptHandler (
|
|
# UINTN Vector,
|
|
# VOID (*Handler)(VOID)
|
|
# )
|
|
ASM_GLOBAL ASM_PFX(InstallInterruptHandler)
|
|
ASM_PFX(InstallInterruptHandler):
|
|
# Vector:DWORD @ 4(%esp)
|
|
# Handler:DWORD @ 8(%esp)
|
|
push %rbx
|
|
pushfq # save eflags
|
|
cli # turn off interrupts
|
|
subq $0x10, %rsp # open some space on the stack
|
|
movq %rsp, %rbx
|
|
|
|
sidt (%rbx) # get fword address of IDT
|
|
movq 2(%rbx), %rbx # move offset of IDT into RBX
|
|
addq $0x10, %rsp # correct stack
|
|
movq %rcx, %rax # Get vector number
|
|
shlq $4, %rax # multiply by 16 to get offset
|
|
addq %rax, %rbx # add to IDT base to get entry
|
|
movq %rdx, %rax # load new address into IDT entry
|
|
movw %ax, (%rbx) # write bits 15..0 of offset
|
|
shrq $16, %rax # use ax to copy 31..16 to descriptors
|
|
movw %ax, 6(%rbx) # write bits 31..16 of offset
|
|
shrq $16, %rax # use eax to copy 63..32 to descriptors
|
|
movl %eax, 8(%rbx) # write bits 63..32 of offset
|
|
popfq # restore flags (possible enabling interrupts)
|
|
pop %rbx
|
|
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:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x0
|
|
JmpCommonIdtEntry
|
|
# db 0e9h # jmp 16 bit reletive
|
|
# dd commonIdtEntry - $ - 4 # offset to jump to
|
|
|
|
INT1:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x1
|
|
JmpCommonIdtEntry
|
|
|
|
INT2:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x2
|
|
JmpCommonIdtEntry
|
|
|
|
INT3:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x3
|
|
JmpCommonIdtEntry
|
|
|
|
INT4:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x4
|
|
JmpCommonIdtEntry
|
|
|
|
INT5:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x5
|
|
JmpCommonIdtEntry
|
|
|
|
INT6:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x6
|
|
JmpCommonIdtEntry
|
|
|
|
INT7:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x7
|
|
JmpCommonIdtEntry
|
|
|
|
INT8:
|
|
# Double fault causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $0x8
|
|
JmpCommonIdtEntry
|
|
|
|
INT9:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $0x9
|
|
JmpCommonIdtEntry
|
|
|
|
INT10:
|
|
# Invalid TSS causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $10
|
|
JmpCommonIdtEntry
|
|
|
|
INT11:
|
|
# Segment Not Present causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $11
|
|
JmpCommonIdtEntry
|
|
|
|
INT12:
|
|
# Stack fault causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $12
|
|
JmpCommonIdtEntry
|
|
|
|
INT13:
|
|
# GP fault causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $13
|
|
JmpCommonIdtEntry
|
|
|
|
INT14:
|
|
# Page fault causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $14
|
|
JmpCommonIdtEntry
|
|
|
|
INT15:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $15
|
|
JmpCommonIdtEntry
|
|
|
|
INT16:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $16
|
|
JmpCommonIdtEntry
|
|
|
|
INT17:
|
|
# Alignment check causes an error code to be pushed so no phony push necessary
|
|
nop
|
|
nop
|
|
push $17
|
|
JmpCommonIdtEntry
|
|
|
|
INT18:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $18
|
|
JmpCommonIdtEntry
|
|
|
|
INT19:
|
|
push $0x0 # push error code place holder on the stack
|
|
push $19
|
|
JmpCommonIdtEntry
|
|
|
|
INTUnknown:
|
|
# The following segment repeats (32 - 20) times:
|
|
# macro .rept isn't used here because Apple GAS compiler doesn't support it.
|
|
# No. 1
|
|
push $0x0 # push error code place holder on the stack
|
|
push $20 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown(%rip) - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 2
|
|
push $0x0 # push error code place holder on the stack
|
|
push $21 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown(%rip) - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 3
|
|
push $0x0 # push error code place holder on the stack
|
|
push $22 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 4
|
|
push $0x0 # push error code place holder on the stack
|
|
push $23 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 5
|
|
push $0x0 # push error code place holder on the stack
|
|
push $24 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 6
|
|
push $0x0 # push error code place holder on the stack
|
|
push $25 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 7
|
|
push $0x0 # push error code place holder on the stack
|
|
push $26 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 8
|
|
push $0x0 # push error code place holder on the stack
|
|
push $27 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 9
|
|
push $0x0 # push error code place holder on the stack
|
|
push $28 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 10
|
|
push $0x0 # push error code place holder on the stack
|
|
push $29 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 11
|
|
push $0x0 # push error code place holder on the stack
|
|
push $30 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
# No. 12
|
|
push $0x0 # push error code place holder on the stack
|
|
push $31 # push vector number
|
|
# .byte 0x6a
|
|
# .byte ( . - INTUnknown - 3 ) / 9 + 20 # vector number
|
|
JmpCommonIdtEntry
|
|
|
|
|
|
ASM_GLOBAL ASM_PFX(SystemTimerHandler)
|
|
ASM_PFX(SystemTimerHandler):
|
|
push $0
|
|
push $0 #$ASM_PFX(mTimerVector) //to be patched in Cpu.c
|
|
JmpCommonIdtEntry
|
|
|
|
commonIdtEntry:
|
|
# +---------------------+
|
|
# + EFlags +
|
|
# +---------------------+
|
|
# + CS +
|
|
# +---------------------+
|
|
# + EIP +
|
|
# +---------------------+
|
|
# + Error Code +
|
|
# +---------------------+
|
|
# + Vector Number +
|
|
# +---------------------+
|
|
# + EBP +
|
|
# +---------------------+ <-- EBP
|
|
|
|
cli
|
|
push %rbp
|
|
movq %rsp,%rbp
|
|
|
|
#
|
|
# Since here the stack pointer is 16-byte aligned, so
|
|
# EFI_FX_SAVE_STATE_X64 of EFI_SYSTEM_CONTEXT_x64
|
|
# is 16-byte aligned
|
|
#
|
|
|
|
## UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax#
|
|
## UINT64 R8, R9, R10, R11, R12, R13, R14, R15#
|
|
push %r15
|
|
push %r14
|
|
push %r13
|
|
push %r12
|
|
push %r11
|
|
push %r10
|
|
push %r9
|
|
push %r8
|
|
push %rax
|
|
push %rcx
|
|
push %rdx
|
|
push %rbx
|
|
push 6*8(%rbp)
|
|
push (%rbp)
|
|
push %rsi
|
|
push %rdi
|
|
|
|
## UINT64 Gs, Fs, Es, Ds, Cs, Ss# insure high 16 bits of each is zero
|
|
movzwq 7*8(%rbp), %rax
|
|
push %rax # for ss
|
|
movzwq 4*8(%rbp), %rax
|
|
push %rax # for cs
|
|
movl %ds, %eax
|
|
push %rax
|
|
movl %es, %eax
|
|
push %rax
|
|
movl %fs, %eax
|
|
push %rax
|
|
movl %gs, %eax
|
|
push %rax
|
|
|
|
## UINT64 Rip#
|
|
push 3*8(%rbp)
|
|
|
|
## UINT64 Gdtr[2], Idtr[2]#
|
|
subq $16, %rsp
|
|
sidt (%rsp)
|
|
subq $16, %rsp
|
|
sgdt (%rsp)
|
|
|
|
## UINT64 Ldtr, Tr#
|
|
xorq %rax, %rax
|
|
str %ax
|
|
push %rax
|
|
sldt %ax
|
|
push %rax
|
|
|
|
## UINT64 RFlags#
|
|
push 5*8(%rbp)
|
|
|
|
## UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8#
|
|
movq %cr8, %rax
|
|
push %rax
|
|
movq %cr4, %rax
|
|
orq $0x208, %rax
|
|
movq %rax, %cr4
|
|
push %rax
|
|
movq %cr3, %rax
|
|
push %rax
|
|
movq %cr2, %rax
|
|
push %rax
|
|
xorq %rax, %rax
|
|
push %rax
|
|
movq %cr0, %rax
|
|
push %rax
|
|
|
|
## UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7#
|
|
movq %dr7, %rax
|
|
push %rax
|
|
|
|
## clear Dr7 while executing debugger itself
|
|
xorq %rax, %rax
|
|
movq %rax, %dr7
|
|
|
|
movq %dr6, %rax
|
|
push %rax
|
|
|
|
## insure all status bits in dr6 are clear...
|
|
xorq %rax, %rax
|
|
movq %rax, %dr6
|
|
|
|
movq %dr3, %rax
|
|
push %rax
|
|
movq %dr2, %rax
|
|
push %rax
|
|
movq %dr1, %rax
|
|
push %rax
|
|
movq %dr0, %rax
|
|
push %rax
|
|
|
|
|
|
## FX_SAVE_STATE_X64 FxSaveState#
|
|
subq $512, %rsp
|
|
movq %rsp, %rdi
|
|
fxsave (%rdi)
|
|
|
|
## UINT64 ExceptionData#
|
|
push 2*8 (%rbp)
|
|
|
|
## call into exception handler
|
|
## Prepare parameter and call
|
|
movq 1*8(%rbp), %rcx
|
|
movq %rsp, %rdx
|
|
#
|
|
# Per X64 calling convention, allocate maximum parameter stack space
|
|
# and make sure RSP is 16-byte aligned
|
|
#
|
|
subq $(4*8+8), %rsp
|
|
cmpq $32, %rcx
|
|
jb 1f # CallException
|
|
call ASM_PFX(TimerHandler)
|
|
jmp 2f # ExceptionDone
|
|
#CallException:
|
|
1:
|
|
call ASM_PFX(ExceptionHandler)
|
|
#ExceptionDone:
|
|
2:
|
|
addq $(4*8+8), %rsp
|
|
|
|
cli
|
|
## UINT64 ExceptionData#
|
|
addq $8, %rsp
|
|
|
|
## FX_SAVE_STATE_X64 FxSaveState#
|
|
movq %rsp, %rsi
|
|
fxrstor (%esi)
|
|
addq $512, %rsp
|
|
|
|
|
|
## UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7#
|
|
pop %rax
|
|
movq %rax, %dr0
|
|
pop %rax
|
|
movq %rax, %dr1
|
|
pop %rax
|
|
movq %rax, %dr2
|
|
pop %rax
|
|
movq %rax, %dr3
|
|
## skip restore of dr6. We cleared dr6 during the context save.
|
|
addq $8, %rsp
|
|
pop %rax
|
|
movq %rax, %dr7
|
|
|
|
## UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8#
|
|
pop %rax
|
|
movq %rax, %cr0
|
|
addq $8, %rsp # not for Cr1
|
|
pop %rax
|
|
movq %rax, %cr2
|
|
pop %rax
|
|
movq %rax, %cr3
|
|
pop %rax
|
|
movq %rax, %cr4
|
|
pop %rax
|
|
mov %rax, %cr8
|
|
|
|
## UINT64 RFlags#
|
|
pop 5*8(%rbp)
|
|
|
|
## UINT64 Ldtr, Tr#
|
|
## UINT64 Gdtr[2], Idtr[2]#
|
|
## Best not let anyone mess with these particular registers...
|
|
addq $48, %rsp
|
|
|
|
## UINT64 Rip#
|
|
pop 3*8(%rbp)
|
|
|
|
## UINT64 Gs, Fs, Es, Ds, Cs, Ss#
|
|
pop %rax
|
|
# mov gs, rax # not for gs
|
|
pop %rax
|
|
# mov fs, rax # not for fs
|
|
# (X64 will not use fs and gs, so we do not restore it)
|
|
pop %rax
|
|
movl %eax, %es #movq %rax, %es #Slice
|
|
pop %rax
|
|
movl %eax, %ds
|
|
pop 4*8(%rbp) # for cs
|
|
pop 7*8(%rbp) # for ss
|
|
|
|
## UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax#
|
|
## UINT64 R8, R9, R10, R11, R12, R13, R14, R15#
|
|
pop %rdi
|
|
pop %rsi
|
|
addq $8, %rsp # not for rbp
|
|
pop 6*8(%rbp) # for rsp
|
|
pop %rbx
|
|
pop %rdx
|
|
pop %rcx
|
|
pop %rax
|
|
pop %r8
|
|
pop %r9
|
|
pop %r10
|
|
pop %r11
|
|
pop %r12
|
|
pop %r13
|
|
pop %r14
|
|
pop %r15
|
|
|
|
movq %rbp, %rsp
|
|
pop %rbp
|
|
addq $16, %rsp
|
|
iretq
|
|
|
|
|
|
##############################################################################
|
|
# data
|
|
##############################################################################
|
|
|
|
.data
|
|
|
|
#gdtr: .short GDT_END - GDT_BASE - 1 # GDT limit
|
|
gdtr: .short GDT_LEN
|
|
.quad 0 #GDT_BASE # (GDT base gets set above)
|
|
##############################################################################
|
|
# global descriptor table (GDT)
|
|
##############################################################################
|
|
|
|
.p2align 4 # make GDT 16-byte align
|
|
|
|
GDT_BASE:
|
|
|
|
# null descriptor
|
|
NULL_SEL = .-GDT_BASE # Selector [0x0]
|
|
.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 # Selector [0x8]
|
|
.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 # Selector [0x10]
|
|
.short 0x0FFFF # limit 0xFFFFF
|
|
.short 0 # base 0
|
|
.byte 0
|
|
.byte 0x09A # present, ring 0, code, expand-up, writable
|
|
.byte 0x0CF # page-granular, 32-bit
|
|
.byte 0
|
|
|
|
# system data segment descriptor
|
|
SYS_DATA_SEL = .-GDT_BASE # Selector [0x18]
|
|
.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 # Selector [0x20]
|
|
.short 0x0FFFF # limit 0xFFFFF
|
|
.short 0 # base 0
|
|
.byte 0
|
|
.byte 0x09A # present, ring 0, code, expand-up, writable
|
|
.byte 0x0CF # page-granular, 32-bit
|
|
.byte 0
|
|
|
|
# spare segment descriptor
|
|
SPARE3_SEL = .-GDT_BASE # Selector [0x28]
|
|
.short 0
|
|
.short 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
|
|
# system data segment descriptor
|
|
SYS_DATA64_SEL = .-GDT_BASE # Selector [0x30]
|
|
.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_CODE64_SEL = .-GDT_BASE # Selector [0x38]
|
|
.short 0x0FFFF # limit 0xFFFFF
|
|
.short 0 # base 0
|
|
.byte 0
|
|
.byte 0x09A # present, ring 0, code, expand-up, writable
|
|
.byte 0x0AF # page-granular, 64-bit
|
|
.byte 0
|
|
|
|
# spare segment descriptor
|
|
SPARE4_SEL = .-GDT_BASE # Selector [0x40]
|
|
.short 0
|
|
.short 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
.byte 0
|
|
|
|
GDT_END:
|
|
.set GDT_LEN, . - GDT_BASE - 1
|
|
|
|
#idtr: .short IDT_END - IDT_BASE - 1 # IDT limit
|
|
idtr: .short IDT_LEN
|
|
.quad 0 #IDT_BASE # (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.
|
|
##############################################################################
|
|
|
|
.p2align 3 # make IDT 8-byte align
|
|
|
|
IDT_BASE:
|
|
# divide by zero (INT 0)
|
|
DIV_ZERO_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# debug exception (INT 1)
|
|
DEBUG_EXCEPT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# NMI (INT 2)
|
|
NMI_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# soft breakpoint (INT 3)
|
|
BREAKPOINT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# overflow (INT 4)
|
|
OVERFLOW_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# bounds check (INT 5)
|
|
BOUNDS_CHECK_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# invalid opcode (INT 6)
|
|
INVALID_OPCODE_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# device not available (INT 7)
|
|
DEV_NOT_AVAIL_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# double fault (INT 8)
|
|
DOUBLE_FAULT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# Coprocessor segment overrun - reserved (INT 9)
|
|
RSVD_INTR_SEL1 = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# invalid TSS (INT 0ah)
|
|
INVALID_TSS_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# segment not present (INT 0bh)
|
|
SEG_NOT_PRESENT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# stack fault (INT 0ch)
|
|
STACK_FAULT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# general protection (INT 0dh)
|
|
GP_FAULT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# page fault (INT 0eh)
|
|
PAGE_FAULT_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# Intel reserved - do not use (INT 0fh)
|
|
RSVD_INTR_SEL2 = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# floating point error (INT 0x10)
|
|
FLT_POINT_ERR_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# alignment check (INT 0x11)
|
|
ALIGNMENT_CHECK_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# machine check (INT 0x12)
|
|
MACHINE_CHECK_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# SIMD floating-point exception (INT 0x13)
|
|
SIMD_EXCEPTION_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# The following segment repeats (32 - 20) times:
|
|
# macro .rept isn't used here because Apple GAS compiler doesn't support it.
|
|
# No. 1
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 2
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 3
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 4
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 5
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 6
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 7
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 8
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 9
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 10
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 11
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
# No. 12
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
|
|
# 72 unspecified descriptors
|
|
.fill 72 * 16, 1, 0
|
|
|
|
# IRQ 0 (System timer) - (INT 0x68)
|
|
IRQ0_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # 0 for reserved
|
|
|
|
# IRQ 1 (8042 Keyboard controller) - (INT 0x69)
|
|
IRQ1_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# Reserved - IRQ 2 redirect (IRQ 2) - DO NOT USE!!! - (INT 6ah)
|
|
IRQ2_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 3 (COM 2) - (INT 6bh)
|
|
IRQ3_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 4 (COM 1) - (INT 6ch)
|
|
IRQ4_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 5 (LPT 2) - (INT 6dh)
|
|
IRQ5_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 6 (Floppy controller) - (INT 6eh)
|
|
IRQ6_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 7 (LPT 1) - (INT 6fh)
|
|
IRQ7_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 8 (RTC Alarm) - (INT 0x70)
|
|
IRQ8_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 9 - (INT 0x71)
|
|
IRQ9_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 10 - (INT 0x72)
|
|
IRQ10_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 11 - (INT 0x73)
|
|
IRQ11_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 12 (PS/2 mouse) - (INT 0x74)
|
|
IRQ12_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 13 (Floating point error) - (INT 0x75)
|
|
IRQ13_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 14 (Secondary IDE) - (INT 0x76)
|
|
IRQ14_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
# IRQ 15 (Primary IDE) - (INT 0x77)
|
|
IRQ15_SEL = .-IDT_BASE
|
|
.short 0 # offset 15:0
|
|
.short SYS_CODE64_SEL # selector 15:0
|
|
.byte 0 # 0 for interrupt gate
|
|
.byte 0x0e | 0x80 # (10001110)type = 386 interrupt gate, present
|
|
.short 0 # offset 31:16
|
|
.long 0 # offset 63:32
|
|
.long 0 # for reserved
|
|
|
|
.fill 16, 1, 0
|
|
|
|
IDT_END:
|
|
.set IDT_LEN, .-IDT_BASE - 1
|
|
|
|
#ASM_FUNCTION_REMOVE_IF_UNREFERENCED
|