os-k/kaleid/kernel/ke/isr.asm

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;=----------------------------------------------------------------------------=;
; GNU GPL OS/K ;
; ;
; Desc: Interrupt Descriptor Table related functions ;
; ;
; ;
; Copyright © 2018-2020 The OS/K Team ;
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; ;
; This file is part of OS/K. ;
; ;
; OS/K is free software: you can redistribute it and/or modify ;
; it under the terms of the GNU General Public License as published by ;
; the Free Software Foundation, either version 3 of the License, or ;
; (at your option) any later version. ;
; ;
; OS/K is distributed in the hope that it will be useful, ;
; but WITHOUT ANY WARRANTY; without even the implied warranty of ;
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;
; GNU General Public License for more details. ;
; ;
; You should have received a copy of the GNU General Public License ;
; along with OS/K. If not, see <https://www.gnu.org/licenses/>. ;
;=----------------------------------------------------------------------------=;
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[BITS 64]
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%include "kaleid/kernel/ke/cpuf.inc"
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global KeLoadIDT
extern _KeIdtPtr
extern _KeHandleISR
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;;
;; Loads the IDT
;;
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KeLoadIDT:
lidt [_KeIdtPtr]
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ret
;;
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;; ISR Exception pre-handler
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;;
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isrPreHandler:
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pushAll
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mov rax, cr8
push rax
mov rax, cr4
push rax
mov rax, cr3
push rax
mov rax, cr2
push rax
mov rax, cr0
push rax
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mov rcx, 0xC0000080
rdmsr
push rax
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; Check if we are switching from user mode to supervisor mode
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mov rax, [rsp + 152]
and rax, 0x3000
jz .SEnter
swapgs ; XXX need TSS
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.SEnter:
; Increment mask count as we configure all interrupts to mask IF
; automatically in the IDT
inc qword [gs:8]
; Call the C routine for dispatching an interrupt
cld ; DF must be cleared by the caller
mov rdi, rsp ; First argument points to the processor state
mov rbp, 0 ; Terminate stack traces here
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call _KeHandleISR
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; decrement mask count
dec qword [gs:8]
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; check if we are switching from supervisor to user mode
mov rax, [rsp + 152]
and rax, 0x3000
jz .SExit
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swapgs ; XXX need TSS
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.SExit:
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; pop the control registers
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add rsp, 48
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popAll
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; pop the error code and interrupt id
add rsp, 16
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iretq
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Die:
hlt
jmp Die
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;; Divide Error Fault
IsrWithoutErrCode 0
;; Debug Exception Fault/trap
IsrWithoutErrCode 1
;; NMI Interrupt
IsrWithoutErrCode 2
;; Breakpoint Trap
IsrWithoutErrCode 3
;; Overflow Trap
IsrWithoutErrCode 4
;; Bound Range Exceeded Fault
IsrWithoutErrCode 5
;; Invalid Opcode Fault
IsrWithoutErrCode 6
;; Device Not Available or No Math Coprocessor Fault
IsrWithoutErrCode 7
;; Coprocessor Segment Overrun Fault
IsrWithoutErrCode 9
;; x87 FPU Floating Point or Math Fault
IsrWithoutErrCode 16
;; Alignment Check Fault
IsrWithoutErrCode 17
;; Machine Check Abort
IsrWithoutErrCode 18
;; SIMD Floating Point Fault
IsrWithoutErrCode 19
;; Virtualization Exception Fault
IsrWithoutErrCode 20
;; Double Fault Abort
IsrWithErrCode 8
;; Invalid TSS Fault
IsrWithErrCode 10
;; Segment Not Present Fault
IsrWithErrCode 11
;; Stack Segment Fault
IsrWithErrCode 12
;; General Protection Fault
IsrWithErrCode 13
;; Page Fault
IsrWithErrCode 14
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;; Reserved
IsrWithoutErrCode 15
IsrWithoutErrCode 21
IsrWithoutErrCode 22
IsrWithoutErrCode 23
IsrWithoutErrCode 24
IsrWithoutErrCode 25
IsrWithoutErrCode 26
IsrWithoutErrCode 27
IsrWithoutErrCode 28
IsrWithoutErrCode 29
IsrWithoutErrCode 30
IsrWithoutErrCode 31
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;; IRQs
%assign i 32
%rep 225
IsrWithoutErrCode i
%assign i i+1
%endrep