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Code Issues Releases Wiki Activity

解决了#DE会触发#UD的问题

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This commit is contained in:
fslongjin
2022-04-10 23:03:16 +08:00
parent f5f36aafd8
commit d78db8225c
6 changed files with 119 additions and 109 deletions
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10
kernel/exception/gate.h
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@ -100,9 +100,8 @@ void set_tss_descriptor(unsigned int n, void *addr)
unsigned long limit = 103;
*(unsigned long *)(phys_2_virt(GDT_Table) + n) = (limit & 0xffff) | (((unsigned long)addr & 0xffff) << 16) | ((((unsigned long)addr >> 16) & 0xff) << 32) | ((unsigned long)0x89 << 40) | ((limit >> 16 & 0xf) << 48) | (((unsigned long)addr >> 24 & 0xff) << 56); /////89 is attribute
kdebug("1212");
*(unsigned long *)(phys_2_virt(GDT_Table) + n + 1) = (((unsigned long)addr >> 32) & 0xffffffff) | 0;
*(unsigned long *)(phys_2_virt(GDT_Table + n)) = (limit & 0xffff) | (((unsigned long)addr & 0xffff) << 16) | ((((unsigned long)addr >> 16) & 0xff) << 32) | ((unsigned long)0x89 << 40) | ((limit >> 16 & 0xf) << 48) | (((unsigned long)addr >> 24 & 0xff) << 56); /////89 is attribute
*(unsigned long *)(phys_2_virt(GDT_Table + n + 1)) = (((unsigned long)addr >> 32) & 0xffffffff) | 0;
}
/**
@ -160,6 +159,11 @@ void set_system_trap_gate(unsigned int n, unsigned char ist, void *addr)
_set_gate(phys_2_virt(IDT_Table + n), 0xEF, ist, addr); // p=1，DPL=3, type=F
}
static inline void set_system_intr_gate(unsigned int n,unsigned char ist,void * addr) //int3
{
_set_gate(phys_2_virt(IDT_Table + n) , 0xEE , ist , addr); //P,DPL=3,TYPE=E
}
/**
* @brief 初始化TSS表的内容
*