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3cbe805486
The kernel ignored the first 8 MiB of RAM while parsing the memory map because the kmalloc heaps and the super physical pages lived here. Move all that stuff inside the .bss segment so that those memory regions are accounted for, otherwise we risk overwriting boot modules placed next to the kernel.
63 lines
1.2 KiB
Plaintext
63 lines
1.2 KiB
Plaintext
ENTRY(start)
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SECTIONS
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{
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. = 0xc0100000;
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start_of_kernel_image = .;
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.text ALIGN(4K) : AT (ADDR(.text) - 0xc0000000)
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{
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$<TARGET_OBJECTS:boot>
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*(.multiboot)
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start_of_kernel_text = .;
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*(.text)
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*(.text.startup)
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start_of_safemem_text = .;
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*(.text.safemem)
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end_of_safemem_text = .;
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start_of_safemem_atomic_text = .;
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*(.text.safemem.atomic)
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end_of_safemem_atomic_text = .;
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end_of_kernel_text = .;
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}
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.rodata ALIGN(4K) : AT (ADDR(.rodata) - 0xc0000000)
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{
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start_heap_ctors = .;
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*libkernel_heap.a:*(.ctors)
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end_heap_ctors = .;
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start_ctors = .;
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*(.ctors)
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end_ctors = .;
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*(.rodata)
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}
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.data ALIGN(4K) : AT (ADDR(.data) - 0xc0000000)
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{
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start_of_kernel_data = .;
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*(.data)
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end_of_kernel_data = .;
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}
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.bss ALIGN(4K) (NOLOAD) : AT (ADDR(.bss) - 0xc0000000)
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{
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start_of_kernel_bss = .;
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*(page_tables)
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*(COMMON)
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*(.bss)
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end_of_kernel_bss = .;
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. = ALIGN(4K);
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*(.heap)
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. = ALIGN(4K);
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*(.super_pages)
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}
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end_of_kernel_image = .;
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}
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