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bug: AP处理器发生异常时无法正确处理

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This commit is contained in:
fslongjin
2022-04-05 14:40:26 +08:00
parent 5ea38e3b53
commit 32b8a163bb
12 changed files with 143 additions and 51 deletions
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33
kernel/exception/gate.h
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@ -3,7 +3,7 @@
* @author longjin
* @brief 门定义
* @date 2022-01-24
*
*
*/
#pragma once
@ -20,11 +20,10 @@ struct gate_struct
unsigned char x[16];
};
extern struct desc_struct GDT_Table[]; //GDT_Table是head.S中的GDT_Table
extern struct gate_struct IDT_Table[]; //IDT_Table是head.S中的IDT_Table
extern struct desc_struct GDT_Table[]; // GDT_Table是head.S中的GDT_Table
extern struct gate_struct IDT_Table[]; // IDT_Table是head.S中的IDT_Table
extern unsigned int TSS64_Table[26];
/**
* @brief 初始化中段描述符表内的门描述符（每个16B）
* @param gate_selector_addr IDT表项的地址
@ -35,7 +34,7 @@ extern unsigned int TSS64_Table[26];
void set_gate(ul *gate_selector_addr, ul attr, unsigned char ist, ul *code_addr)
{
ul __d0=0, __d1=0;
ul __d0 = 0, __d1 = 0;
ul tmp_code_addr = *code_addr;
__d0 = attr << 40; //设置P、DPL、Type
@ -52,14 +51,16 @@ void set_gate(ul *gate_selector_addr, ul attr, unsigned char ist, ul *code_addr)
__d1 = (0xffffffff & tmp_code_addr); //设置段内偏移[63:32]
*gate_selector_addr = __d0;
*(gate_selector_addr + 1) = __d1;
}
void set_tss_descriptor(unsigned int n, void *addr)
{
*(unsigned long *)(GDT_Table + n) = (103UL & 0xffff) | (((unsigned long)addr & 0xffff) << 16) | (((unsigned long)addr >> 16 & 0xff) << 32) | ((unsigned long)0x89 << 40) | ((103UL >> 16 & 0xf) << 48) | (((unsigned long)addr >> 24 & 0xff) << 56); /////89 is attribute
*(unsigned long *)(GDT_Table + n + 1) = ((unsigned long)addr >> 32 & 0xffffffff) | 0;
}
/**
* @brief 加载任务状态段寄存器
@ -69,48 +70,48 @@ void set_gate(ul *gate_selector_addr, ul attr, unsigned char ist, ul *code_addr)
#define load_TR(n) \
do \
{ \
__asm__ __volatile__("ltr %%ax" ::"a"(n << 3)); \
__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((ul*)(IDT_Table + n), 0x8E, ist, (ul*)(&addr)); // p=1，DPL=0, type=E
set_gate((ul *)(IDT_Table + n), 0x8E, ist, (ul *)(&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((ul*)(IDT_Table + n), 0x8F, ist, (ul*)(&addr)); // p=1，DPL=0, type=F
set_gate((ul *)(IDT_Table + n), 0x8F, ist, (ul *)(&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((ul*)(IDT_Table + n), 0xEF, ist, (ul*)(&addr)); // p=1，DPL=3, type=F
set_gate((ul *)(IDT_Table + n), 0xEF, ist, (ul *)(&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)
{