Nigel
7d6c823d79
We now can launch the kernel at 0xC0000000 (or 3 GiB mark) with paging enabled. A lot of early main is currently not executed to keep debugging as simple as possible during the initial testing of higher half kernel loading. A lot of the implementation is straight from wiki.osdev.org/Higher_Half_x86_Bare_Bones. Thanks to all the folks who keep that wiki updated, its really resourceful.
46 lines
793 B
Plaintext
46 lines
793 B
Plaintext
ENTRY(_start)
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/* Tell where the various sections of the object files will be put in the final
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kernel image. */
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SECTIONS
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{
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. = 0x00100000; /* place code at 1MB mark*/
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_kernel_start = .;
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kernel_begin = .; /* For legacy reasons */
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.multiboot.data : {
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*(.multiboot.data)
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}
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.multiboot.text : {
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*(multiboot.text)
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}
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. += 0xC0000000; /* Addresses in the following code need to be above the 3Gb mark */
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.text ALIGN (4K) : AT (ADDR (.text) - 0xC0000000)
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{
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*(.text)
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}
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.rodata ALIGN (4K) : AT (ADDR (.rodata) - 0xC0000000)
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{
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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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*(.data)
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}
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.bss ALIGN (4K) : AT (ADDR (.bss) - 0xC0000000)
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{
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*(COMMON)
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*(.bss)
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*(.bootstrap_stack)
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}
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_kernel_end = .;
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kernel_end = .; /* For legacy reasons */
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}
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