diff options
Diffstat (limited to 'kernel/GDT/gdt.cpp')
| -rw-r--r-- | kernel/GDT/gdt.cpp | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/kernel/GDT/gdt.cpp b/kernel/GDT/gdt.cpp index 00a7025..4e2c28c 100644 --- a/kernel/GDT/gdt.cpp +++ b/kernel/GDT/gdt.cpp @@ -3,17 +3,29 @@ Gdt::Gdt(){ - //Init desc 1 (0 conventional) - //Init desc 2 (code segment) - //Init desc 3 (data segment) - //Init desc 4 (stack segment) - - + + //Init conventional segment + this->initGdtDesc(0x0,0x0,0x0,0x0, &m_Descriptors[0]); + + //Init code segment + this->initGdtDesc(0x0,0xFFFFF,0x9A,0x0D, &m_Descriptors[1]); + + //Init data segment + this->initGdtDesc(0x0,0xFFFFF,0x92,0x0D, &m_Descriptors[2]); + + //Init stack segment + this->initGdtDesc(0x00B00000,0x00000500,0x96,0x0D, &m_Descriptors[3]); + + + //Init GDT Pointer + this->m_Pointer.size=4*sizeof(this->m_Descriptors); + this->m_Pointer.segment=0x00007E00; + } Gdt::~Gdt(){ - + } void Gdt::initGdtDesc(u32 base, u32 limit, u8 access, u8 flags, gdtDescriptorStruct *Descriptor){ @@ -23,11 +35,11 @@ void Gdt::initGdtDesc(u32 base, u32 limit, u8 access, u8 flags, gdtDescriptorStr Descriptor->access = access; Descriptor->limit2 = (limit & 0xF0000 ) >> 16; Descriptor->flags = flags & 0xFF; - Descriptor->base3 = (base & 0xFF000000) >> 24; + Descriptor->base3 = (base & 0xFF000000) >> 24; } void Gdt::loadGdt(){ - //Copy Gdt into memory + //Copy Gdt into memory and init registers } |