mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-08 18:26:48 +00:00
🆕 实现了异常捕获模块
This commit is contained in:
fslongjin
parent
14374d5faf
commit
06cfb1ceb9
4
.vscode/settings.json
vendored
4
.vscode/settings.json
vendored
@ -4,6 +4,8 @@
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"stdbool.h": "c",
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"printk.h": "c",
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"stdarg.h": "c",
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"font.h": "c"
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"font.h": "c",
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"trap.h": "c",
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"gate.h": "c"
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}
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}
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@ -7,21 +7,28 @@ all: kernel
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objcopy -I elf64-x86-64 -S -R ".eh_frame" -R ".comment" -O binary kernel ../bin/kernel/kernel.bin
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kernel: head.o main.o printk.o
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ld -b elf64-x86-64 -z muldefs -o kernel head.o main.o printk.o -T link.lds
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kernel: head.o entry.o main.o printk.o trap.o
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ld -b elf64-x86-64 -z muldefs -o kernel head.o exception/entry.o main.o common/printk.o exception/trap.o -T link.lds
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head.o: head.S
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gcc -E head.S > head.s # 预处理
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as --64 -o head.o head.s
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entry.o: exception/entry.S
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gcc -E exception/entry.S > exception/entry.s
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as --64 -o exception/entry.o exception/entry.s
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main.o: main.c
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# -fno-builtin: 不使用C语言内建函数
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# The -m64 option sets int to 32bits and long and pointer to 64 bits and generates code for AMD’s x86-64 architecture.
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gcc -mcmodel=large -fno-builtin -m64 -c main.c -fno-stack-protector
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gcc -mcmodel=large -fno-builtin -m64 -c main.c -o main.o -fno-stack-protector
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printk.o: common/printk.c
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gcc -mcmodel=large -fno-builtin -m64 -c common/printk.c -fno-stack-protector
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gcc -mcmodel=large -fno-builtin -m64 -c common/printk.c -o common/printk.o -fno-stack-protector
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trap.o: exception/trap.c
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gcc -mcmodel=large -fno-builtin -m64 -c exception/trap.c -o exception/trap.o -fno-stack-protector
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clean:
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rm -rf $(GARBAGE)
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12
kernel/common/asm.h
Normal file
12
kernel/common/asm.h
Normal file
@ -0,0 +1,12 @@
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#pragma once
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#ifndef __ASM__
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#define __ASM__
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#define ENTRY(name)\
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.global name; \
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name:
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#endif
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@ -26,6 +26,11 @@
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#define ABS(x) ((x) > 0 ? (x) : -(x)) // 绝对值
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// 定义类型的缩写
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typedef unsigned long ul;
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typedef unsigned long long ull;
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typedef long long ll;
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//链表数据结构
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struct List
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{
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@ -1,3 +1,4 @@
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#include"../common/asm.h"
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R15 = 0x00
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R14 = 0x08
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@ -24,3 +25,239 @@ RFLAGS = 0xa8
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OLD_RSP = 0xb0
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OLDSS = 0xb8
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Restore_all:
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// === 恢复调用现场 ===
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %r11
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popq %r10
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popq %r9
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popq %r8
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popq %rbx
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popq %rcx
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popq %rdx
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popq %rsi
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popq %rdi
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popq %rbp
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popq %rax // 不允许直接pop到ds
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movq %rax, %ds
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popq %rax
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movq %rax, %es
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popq %rax
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addq $0x10, %rsp // 弹出变量FUNC和errcode
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iretq
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ret_from_exception:
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// === 从中断中返回 ===
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ENTRY(ret_from_intr)
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jmp Restore_all
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Err_Code:
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// ===== 有错误码的情况下，保存寄存器并跳转服务程序
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pushq %rax
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movq %es, %rax
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pushq %rax
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movq %ds, %rax
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pushq %rax
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xorq %rax, %rax
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pushq %rbp
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pushq %rdi
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pushq %rsi
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pushq %rdx
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pushq %rcx
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pushq %rbx
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pushq %r8
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pushq %r9
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pushq %r10
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pushq %r11
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pushq %r12
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pushq %r13
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pushq %r14
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pushq %r15
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cld
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movq ERRCODE(%rsp), %rsi // 把错误码装进rsi，作为函数的第二个参数
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movq FUNC(%rsp), %rdx
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movq $0x10, %rdi // 加载内核段的地址
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movq %rdi, %ds
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movq %rdi, %es
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movq %rsp, %rdi // 把栈指针装入rdi，作为函数的第一个的参数
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callq *%rdx //调用服务程序 带*号表示调用的是绝对地址
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jmp ret_from_exception
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// 0 #DE 除法错误
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ENTRY(divide_error)
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pushq $0 //由于#DE不会产生错误码，但是为了保持弹出结构的一致性，故也压入一个错误码0
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pushq %rax // 先将rax入栈
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leaq do_divide_error(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 1 #DB 调试异常
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ENTRY(debug)
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pushq $0
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pushq %rax
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leaq do_debug(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 2 不可屏蔽中断
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ENTRY(nmi)
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// 不可屏蔽中断不是异常，而是一个外部中断，不会产生错误码
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// 应执行中断处理流程
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pushq $0 //占位err_code
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pushq %rax
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leaq do_nmi(%rip), %rax
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xchgq %rax, (%rsp)
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jmp Err_Code
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// 3 #BP 断点异常
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ENTRY(int3)
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pushq $0
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pushq %rax
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leaq do_int3(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 4 #OF 溢出异常
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ENTRY(overflow)
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pushq $0
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pushq %rax
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leaq do_overflow(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 5 #BR 越界异常
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ENTRY(bounds)
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pushq $0
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pushq %rax
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leaq do_bounds(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 6 #UD 无效/未定义的机器码
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ENTRY(undefined_opcode)
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pushq $0
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pushq %rax
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leaq do_undefined_opcode(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 7 #NM 设备异常（FPU不存在）
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ENTRY(dev_not_available)
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pushq $0
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pushq %rax
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leaq do_dev_not_avaliable(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 8 #DF 双重错误
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ENTRY(double_fault)
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pushq %rax
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leaq do_double_fault(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 9 协处理器越界（保留）
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ENTRY(coprocessor_segment_overrun)
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pushq $0
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pushq %rax
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leaq do_coprocessor_segment_overrun(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 10 #TS 无效的TSS段
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ENTRY(invalid_TSS)
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// === 不正确的任务状态段 #TS ==
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// 有错误码,处理器已经自动在异常处理程序栈中压入错误码
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pushq %rax
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leaq do_invalid_TSS(%rip), %rax
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xchgq %rax, (%rsp)
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jmp Err_Code
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// 11 #NP 段不存在
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ENTRY(segment_not_exists)
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pushq %rax
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leaq do_segment_not_exists(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 12 #SS 段错误
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ENTRY(stack_segment_fault)
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pushq %rax
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leaq do_stack_segment_fault(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 13 #GP 通用保护性异常
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ENTRY(general_protection)
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pushq %rax
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leaq do_general_protection(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 14 #PF 页错误
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ENTRY(page_fault)
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// === 页故障 #PF ==
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// 有错误码
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pushq %rax
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leaq do_page_fault(%rip), %rax
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xchgq %rax, (%rsp)
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jmp Err_Code
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// 15 Intel保留，请勿使用
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// 16 #MF X87 FPU错误（计算错误）
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ENTRY(x87_FPU_error)
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pushq $0
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pushq %rax
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leaq do_x87_FPU_error(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 17 #AC 对齐检测
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ENTRY(alignment_check)
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pushq %rax
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leaq do_alignment_check(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 18 #MC 机器检测
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ENTRY(machine_check)
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pushq $0
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pushq %rax
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leaq do_machine_check(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 19 #XM SIMD浮点异常
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ENTRY(SIMD_exception)
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pushq $0
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pushq %rax
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leaq do_SIMD_exception(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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// 20 #VE 虚拟化异常
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ENTRY(virtualization_exception)
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pushq $0
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pushq %rax
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leaq do_virtualization_exception(%rip), %rax // 获取中断服务程序的地址
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xchgq %rax, (%rsp) // 把FUNC的地址换入栈中
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jmp Err_Code
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@ -8,6 +8,21 @@
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#pragma once
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//描述符表的结构体
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struct desc_struct
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{
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unsigned char x[8];
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};
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//门的结构体
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struct gate_struct
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{
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unsigned char x[16];
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};
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extern struct desc_struct GDT_Table[]; //GDT_Table是head.S中的GDT_Table
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extern struct gate_struct IDT_Table[]; //IDT_Table是head.S中的IDT_Table
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extern unsigned int TSS64_Table[26];
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/**
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* @brief 初始化中段描述符表内的门描述符（每个16B）
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@ -17,26 +32,119 @@
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* @param code_addr 中断服务程序的地址
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*/
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// todo:在系统异常处理主功能完成后，将这段代码用C来写一遍。这段汇编实在是太晦涩难懂了，我看了半个钟才看明白。
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/*
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#define _set_gate(gate_selector_addr, attr, ist, code_addr) \
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do{
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do{ \
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unsigned long __d0, __d1; \
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__asm__ __volatile__ ( "movw %%dx, %%ax \n\t" \
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"andq $0x7, %%rcx \n\t" \ // 清空rcx中除了2:0以外的所有位(此前ist的值已经被赋给了rcx)
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"addq %4, %%rcx \n\t" \ // 将P,DPL, Type的值加到rcx中
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"andq $0x7, %%rcx \n\t" // 清空rcx中除了2:0以外的所有位 此前ist的值已经被赋给了rcx \
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"addq %4, %%rcx \n\t" // 将P,DPL, Type的值加到rcx中 \
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"shlq $32, %%rcx \n\t" \
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"addq %%rcx, %%rax \n\t" \ // 设置ist
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"xorq %%rcx, %%rcx \n\t" \ // 清空rcx
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"addq %%rcx, %%rax \n\t" // 设置ist \
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"xorq %%rcx, %%rcx \n\t" // 清空rcx \
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"movl %%edx, %%ecx \n\t" \
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"shrq $16, %%ecx \n\t" \
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"shlq $48, %%rcx \n\t" \ // 左移到低8B中表示段内偏移的[31:16]处
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"addq %%rcx, %%rax \n\t" \ // 设置段内偏移[31:16]
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"movq %%rax, %0 \n\t" \ // 输出到门选择子的低8B
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"shlq $48, %%rcx \n\t" // 左移到低8B中表示段内偏移的[31:16]处 \
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"addq %%rcx, %%rax \n\t" // 设置段内偏移[31:16] \
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"movq %%rax, %0 \n\t" // 输出到门选择子的低8B \
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"shrq $32, %%rdx \n\t" \
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"movq %%rdx, %1 \n\t" \ // 输出到门选择子的高8B
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"movq %%rdx, %1 \n\t" // 输出到门选择子的高8B \
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:"=m"(*((unsigned long *)(gate_selector_addr))) , \
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"=m"(*(1 + (unsigned long *)(gate_selector_addr))),"=&a"(__d0),"=&d"(__d1) \
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:"i"(attr << 8), \
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"3"((unsigned long *)(code_addr)),"2"(0x8 << 16),"c"(ist) \
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:"memory" \
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)
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); \
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}while(0)
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*/
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//由于带上注释就编译不过，因此复制一份到这里
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#define _set_gate(gate_selector_addr, attr, ist, code_addr) \
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do \
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{ \
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unsigned long __d0, __d1; \
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__asm__ __volatile__("movw %%dx, %%ax \n\t" \
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"andq $0x7, %%rcx \n\t" \
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"addq %4, %%rcx \n\t" \
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"shlq $32, %%rcx \n\t" \
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"addq %%rcx, %%rax \n\t" \
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"xorq %%rcx, %%rcx \n\t" \
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"movl %%edx, %%ecx \n\t" \
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"shrq $16, %%rcx \n\t" \
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"shlq $48, %%rcx \n\t" \
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"addq %%rcx, %%rax \n\t" \
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"movq %%rax, %0 \n\t" \
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"shrq $32, %%rdx \n\t" \
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"movq %%rdx, %1 \n\t" \
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: "=m"(*((unsigned long *)(gate_selector_addr))), \
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"=m"(*(1 + (unsigned long *)(gate_selector_addr))), "=&a"(__d0), "=&d"(__d1) \
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: "i"(attr << 8), \
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"3"((unsigned long *)(code_addr)), "2"(0x8 << 16), "c"(ist) \
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: "memory"); \
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} while (0)
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/**
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* @brief 加载任务状态段寄存器
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* @param n TSS基地址在GDT中的第几项
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* 左移3位的原因是GDT每项占8字节
|
||||
*/
|
||||
#define load_TR(n) \
|
||||
do \
|
||||
{ \
|
||||
__asm__ __volatile__("ltr %%ax" ::"a"(n << 3)); \
|
||||
} while (0)
|
||||
|
||||
/**
|
||||
* @brief 设置中断门
|
||||
*
|
||||
* @param n 中断号
|
||||
* @param ist ist
|
||||
* @param addr 服务程序的地址
|
||||
*/
|
||||
void set_intr_gate(unsigned int n, unsigned char ist, void *addr)
|
||||
{
|
||||
_set_gate(IDT_Table + n, 0x8E, ist, addr); // p=1，DPL=0, type=E
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 设置64位，DPL=0的陷阱门
|
||||
*
|
||||
* @param n 中断号
|
||||
* @param ist ist
|
||||
* @param addr 服务程序的地址
|
||||
*/
|
||||
void set_trap_gate(unsigned int n, unsigned char ist, void *addr)
|
||||
{
|
||||
_set_gate(IDT_Table + n, 0x8F, ist, addr); // p=1，DPL=0, type=F
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 设置64位，DPL=3的陷阱门
|
||||
*
|
||||
* @param n 中断号
|
||||
* @param ist ist
|
||||
* @param addr 服务程序的地址
|
||||
*/
|
||||
void set_system_trap_gate(unsigned int n, unsigned char ist, void *addr)
|
||||
{
|
||||
_set_gate(IDT_Table + n, 0xEF, ist, addr); // p=1，DPL=3, type=F
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 初始化TSS表的内容
|
||||
*
|
||||
*/
|
||||
void set_TSS64(ul rsp0, ul rsp1, ul rsp2, ul ist1, ul ist2, ul ist3, ul ist4, ul ist5, ul ist6, ul ist7)
|
||||
{
|
||||
*(ul *)(TSS64_Table + 1) = rsp0;
|
||||
*(ul *)(TSS64_Table + 3) = rsp1;
|
||||
*(ul *)(TSS64_Table + 5) = rsp2;
|
||||
|
||||
*(ul *)(TSS64_Table + 9) = ist1;
|
||||
*(ul *)(TSS64_Table + 11) = ist2;
|
||||
*(ul *)(TSS64_Table + 13) = ist3;
|
||||
*(ul *)(TSS64_Table + 15) = ist4;
|
||||
*(ul *)(TSS64_Table + 17) = ist5;
|
||||
*(ul *)(TSS64_Table + 19) = ist6;
|
||||
*(ul *)(TSS64_Table + 21) = ist7;
|
||||
}
|
||||
319
kernel/exception/trap.c
Normal file
319
kernel/exception/trap.c
Normal file
@ -0,0 +1,319 @@
|
||||
#include "trap.h"
|
||||
#include "gate.h"
|
||||
|
||||
void init_sys_vector()
|
||||
{
|
||||
set_trap_gate(0, 1, divide_error);
|
||||
set_trap_gate(1, 1, debug);
|
||||
set_intr_gate(2, 1, nmi);
|
||||
set_system_trap_gate(3, 1, int3);
|
||||
set_system_trap_gate(4, 1, overflow);
|
||||
set_system_trap_gate(5, 1, bounds);
|
||||
set_trap_gate(6, 1, undefined_opcode);
|
||||
set_trap_gate(7, 1, dev_not_available);
|
||||
set_trap_gate(8, 1, double_fault);
|
||||
set_trap_gate(9, 1, coprocessor_segment_overrun);
|
||||
set_trap_gate(10, 1, invalid_TSS);
|
||||
set_trap_gate(11, 1, segment_not_exists);
|
||||
set_trap_gate(12, 1, stack_segment_fault);
|
||||
set_trap_gate(13, 1, general_protection);
|
||||
set_trap_gate(14, 1, page_fault);
|
||||
// 中断号15由Intel保留，不能使用
|
||||
set_trap_gate(16, 1, x87_FPU_error);
|
||||
set_trap_gate(17, 1, alignment_check);
|
||||
set_trap_gate(18, 1, machine_check);
|
||||
set_trap_gate(19, 1, SIMD_exception);
|
||||
set_trap_gate(20, 1, virtualization_exception);
|
||||
// 中断号21-31由Intel保留，不能使用
|
||||
|
||||
// 32-255为用户自定义中断内部
|
||||
}
|
||||
|
||||
// 0 #DE 除法错误
|
||||
void do_divide_error(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_divide_error(0),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 1 #DB 调试异常
|
||||
void do_debug(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR / TRAP");
|
||||
printk(" ] do_debug(1),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 2 不可屏蔽中断
|
||||
void do_nmi(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(BLUE, BLACK, "INT");
|
||||
printk(" ] do_nmi(2),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 3 #BP 断点异常
|
||||
void do_int3(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(YELLOW, BLACK, "TRAP");
|
||||
printk(" ] do_int3(3),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 4 #OF 溢出异常
|
||||
void do_overflow(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(YELLOW, BLACK, "TRAP");
|
||||
printk(" ] do_overflow(4),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 5 #BR 越界异常
|
||||
void do_bounds(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_bounds(5),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 6 #UD 无效/未定义的机器码
|
||||
void do_undefined_opcode(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_undefined_opcode(6),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 7 #NM 设备异常（FPU不存在）
|
||||
void do_dev_not_avaliable(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_dev_not_avaliable(7),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 8 #DF 双重错误
|
||||
void do_double_fault(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "Terminate");
|
||||
printk(" ] do_double_fault(8),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 9 协处理器越界（保留）
|
||||
void do_coprocessor_segment_overrun(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_coprocessor_segment_overrun(9),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 10 #TS 无效的TSS段
|
||||
void do_invalid_TSS(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk("] do_invalid_TSS(10),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
printk_color(YELLOW, BLACK, "Information:\n");
|
||||
// 解析错误码
|
||||
if (error_code & 0x01)
|
||||
printk("The exception occurred during delivery of an event external to the program.\n");
|
||||
|
||||
if (error_code & 0x02)
|
||||
printk("Refers to a descriptor in the IDT.\n");
|
||||
else
|
||||
{
|
||||
if (error_code & 0x04)
|
||||
printk("Refers to a descriptor in the current LDT.\n");
|
||||
else
|
||||
printk("Refers to a descriptor in the GDT.\n");
|
||||
}
|
||||
|
||||
printk("Segment Selector Index:%10x\n", error_code & 0xfff8);
|
||||
|
||||
printk("\n");
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 11 #NP 段不存在
|
||||
void do_segment_not_exists(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_segment_not_exists(11),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 12 #SS SS段错误
|
||||
void do_stack_segment_fault(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_stack_segment_fault(12),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 13 #GP 通用保护性异常
|
||||
void do_general_protection(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_general_protection(13),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 14 #PF 页故障
|
||||
void do_page_fault(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long cr2 = 0;
|
||||
// 先保存cr2寄存器的值，避免由于再次触发页故障而丢失值
|
||||
// cr2存储着触发异常的线性地址
|
||||
__asm__ __volatile__("movq %%cr2, %0"
|
||||
: "=r"(cr2)::"memory");
|
||||
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk("] do_page_fault(14),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\tCR2:%18lx\n", error_code, rsp, *rip, cr2);
|
||||
|
||||
printk_color(YELLOW, BLACK, "Information:\n");
|
||||
if (!(error_code & 0x01))
|
||||
printk("Page does not exist.\n");
|
||||
|
||||
if (error_code & 0x02)
|
||||
printk("Fault occurred during operation: writing\n");
|
||||
else
|
||||
printk("Fault occurred during operation: reading\n");
|
||||
|
||||
if (error_code & 0x04)
|
||||
printk("Fault in user level(3).\n");
|
||||
else
|
||||
printk("Fault in supervisor level(0,1,2).\n");
|
||||
|
||||
if (error_code & 0x08)
|
||||
printk("Reserved bit caused the fault.\n");
|
||||
|
||||
if (error_code & 0x10)
|
||||
printk("Fault occurred during fetching instruction.\n");
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 15 Intel保留，请勿使用
|
||||
|
||||
// 16 #MF x87FPU错误
|
||||
void do_x87_FPU_error(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_x87_FPU_error(16),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 17 #AC 对齐检测
|
||||
void do_alignment_check(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_alignment_check(17),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 18 #MC 机器检测
|
||||
void do_machine_check(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_machine_check(18),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 19 #XM SIMD浮点异常
|
||||
void do_SIMD_exception(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_SIMD_exception(19),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 20 #VE 虚拟化异常
|
||||
void do_virtualization_exception(unsigned long rsp, unsigned long error_code)
|
||||
{
|
||||
unsigned long *rip = (unsigned long *)(rsp + 0x98);
|
||||
printk("[ ");
|
||||
printk_color(RED, BLACK, "ERROR");
|
||||
printk(" ] do_virtualization_exception(20),\tError Code:%18lx,\tRSP:%18lx,\tRIP:%18lx\n", error_code, rsp, *rip);
|
||||
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
// 21-21 Intel保留，请勿使用
|
||||
@ -8,8 +8,9 @@
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <common/printk.h>
|
||||
#include <common/glib.h>
|
||||
#include "../common/printk.h"
|
||||
#include "../common/glib.h"
|
||||
#include "../common/asm.h"
|
||||
|
||||
/**
|
||||
* @brief 初始化系统中断表
|
||||
@ -36,7 +37,7 @@ void dev_not_available();
|
||||
void double_fault();
|
||||
void coprocessor_segment_overrun();
|
||||
void invalid_TSS();
|
||||
void segment_not_present();
|
||||
void segment_not_exists();
|
||||
void stack_segment_fault();
|
||||
void general_protection();
|
||||
// 缺页异常
|
||||
|
||||
@ -113,9 +113,9 @@ SetUp_TSS64:
|
||||
shrq $32, %rdx
|
||||
movq %rdx, 72(%rdi) // 高8B存到GDT低9项
|
||||
|
||||
// 装载任务状态段寄存器
|
||||
mov $0x40, %ax // 设置起始地址为64
|
||||
ltr %ax
|
||||
// 装载任务状态段寄存器(已改为在main.c中使用load_TR宏进行装载)
|
||||
// mov $0x40, %ax // 设置起始地址为64
|
||||
// ltr %ax
|
||||
|
||||
// 切换到内核主程序
|
||||
movq go_to_kernel(%rip), %rax
|
||||
@ -134,6 +134,8 @@ m_ignore_int:
|
||||
pushq %rax
|
||||
lretq
|
||||
|
||||
lretq
|
||||
|
||||
|
||||
go_to_ignore_int:
|
||||
.quad ignore_int
|
||||
|
||||
@ -4,6 +4,8 @@
|
||||
|
||||
#include "common/glib.h"
|
||||
#include "common/printk.h"
|
||||
#include "exception/gate.h"
|
||||
#include "exception/trap.h"
|
||||
|
||||
int *FR_address = (int *)0xffff800000a00000; //帧缓存区的地址
|
||||
|
||||
@ -23,7 +25,7 @@ void show_welcome()
|
||||
printk_color(BLACK, 0x00e0ebeb, " Welcome to DragonOS ! \n");
|
||||
for (int i = 0; i < 74; ++i)
|
||||
printk(" ");
|
||||
printk_color(0x00e0ebeb, 0x00e0ebeb, " \n");
|
||||
printk_color(0x00e0ebeb, 0x00e0ebeb, " \n\n");
|
||||
}
|
||||
|
||||
void test_printk()
|
||||
@ -54,16 +56,37 @@ void test_printk()
|
||||
printk("\nTest base 16 : %d --> %x\n", 255, 255);
|
||||
printk("\nTest base 16 : %d --> %X\n", 255, 255);
|
||||
}
|
||||
//操作系统内核从这里开始执行
|
||||
void Start_Kernel(void)
|
||||
|
||||
void init()
|
||||
{
|
||||
// 初始化printk
|
||||
init_printk(1440, 900, FR_address, 1440 * 900 * 4, 8, 16);
|
||||
|
||||
show_welcome();
|
||||
//test_printk();
|
||||
load_TR(8); // 加载TR寄存器
|
||||
|
||||
// 初始化任务状态段表
|
||||
ul tss_item_addr = 0xffff800000007c00;
|
||||
set_TSS64(tss_item_addr, tss_item_addr, tss_item_addr, tss_item_addr, tss_item_addr,
|
||||
tss_item_addr, tss_item_addr, tss_item_addr, tss_item_addr, tss_item_addr);
|
||||
|
||||
// 初始化中断描述符表
|
||||
init_sys_vector();
|
||||
|
||||
int t = 1 / 0; // 测试异常处理模块ignore_int能否正常工作
|
||||
}
|
||||
//操作系统内核从这里开始执行
|
||||
void Start_Kernel(void)
|
||||
{
|
||||
|
||||
init();
|
||||
show_welcome();
|
||||
|
||||
|
||||
|
||||
//test_printk();
|
||||
|
||||
//int t = 1 / 0; // 测试异常处理模块能否正常工作 触发除法错误
|
||||
int t = *(int*) 0xffff80000aa00000; // 触发页故障
|
||||
|
||||
|
||||
while (1)
|
||||
;
|
||||
@ -74,6 +97,5 @@ void ignore_int()
|
||||
printk("[");
|
||||
printk_color(YELLOW, BLACK, "WARN");
|
||||
printk("] Unknown interrupt or fault at RIP.\n");
|
||||
while (1)
|
||||
;
|
||||
return;
|
||||
}
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user