diff options
Diffstat (limited to 'src/core/idt.c')
| -rw-r--r-- | src/core/idt.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/core/idt.c b/src/core/idt.c index 5acdf8b..861927a 100644 --- a/src/core/idt.c +++ b/src/core/idt.c @@ -2,7 +2,7 @@ struct IDT_REGISTER IDTR={ 8*IDT_MAX_ENTRY, - 0x0 + 0x0 // IDT is located at physical address 0 }; // Interrupt functions (cf int.S) @@ -15,17 +15,18 @@ INT_SYSCALL; void idt_init(){ - // Map first default 32 entries + // Map entries, note that first 32 entries are used by the CPU + // and should be mapped to a function (INT_DEFAULT here) for(int i=0;i<IDT_MAX_ENTRY;i++){ - idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_DEFAULT,IDT_INT_GATE},i); + idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_DEFAULT,IDT_INT_GATE|IDT_P},i); if(i==14) - idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_PAGE_FAULT,IDT_INT_GATE},i); + idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_PAGE_FAULT,IDT_INT_GATE|IDT_P},i); if(i==32) - idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_CLOCK,IDT_INT_GATE},i); + idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_CLOCK,IDT_INT_GATE|IDT_P},i); if(i==33) - idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_KEYPRESS,IDT_INT_GATE},i); + idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_KEYPRESS,IDT_INT_GATE|IDT_P},i); if(i==48) - idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_SYSCALL,IDT_INT_GATE|0x6000},i); + idt_write_entry((IDT_ENTRY){0x08,(u32)&INT_SYSCALL,IDT_INT_GATE|IDT_P|IDT_PRVL_3},i); } // Load IDT asm("lidtl (IDTR)"); |