ngiddings
961139df9e
Moved base linear address to 0xFF800000 Kernel only reserves the page frames it actually needs Memory for multiboot2 headers is freed Video memory and APIC registers are dynamically mapped into linear addresses
42 lines
822 B
Plaintext
Executable File
42 lines
822 B
Plaintext
Executable File
ENTRY(_start)
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SECTIONS
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{
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. = 0xFF800000;
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VIRTUAL_BASE = .;
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PHYSICAL_BASE = 0x100000;
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BASE_DIFF = VIRTUAL_BASE - PHYSICAL_BASE;
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.text BLOCK(4K) : ALIGN(4K)
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{
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*(.multiboot)
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*(.text)
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}
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.rodata BLOCK(4K) : ALIGN(4K)
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{
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*(.rodata)
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}
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.data BLOCK(4K) : ALIGN(4K)
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{
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*(.data)
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}
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.bss BLOCK(4K) : ALIGN(4K)
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{
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*(COMMON)
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*(.bss)
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}
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LOAD_START = ADDR(.text) - (VIRTUAL_BASE - PHYSICAL_BASE);
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LOAD_END = ADDR(.data) + SIZEOF(.data) - (VIRTUAL_BASE - PHYSICAL_BASE);
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BSS_END = ADDR(.bss) + SIZEOF(.bss) - (VIRTUAL_BASE - PHYSICAL_BASE);
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IMAGE_SIZE = ((BSS_END - LOAD_START) + (4096 - ((BSS_END - LOAD_START) % 4096))) / 4096;
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_kernel_pstart = PHYSICAL_BASE;
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_kernel_pend = PHYSICAL_BASE + (4096 * IMAGE_SIZE);
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_kernel_start = VIRTUAL_BASE;
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_kernel_end = VIRTUAL_BASE + (4096 * IMAGE_SIZE);
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}
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