227cc19890
New features: - support of kernel tasks in 64bit mode - support of LwIP in 64bit mode Missing features in 64bit mode - user-level support - APIC support => SMP support To create a 64bit version of the MetalSVM kernel, the compiler flags “-m64 -mno-red-zone” and the assembler flags “-felf64” has to be used. Please use qemu-system-x86_64 as test platform. Notice, metalsvm.elf is a 32bit ELF file. However, it contains (beside the startup code) only 64bit code. This is required because GRUB doesn’t boot 64bit ELF kernels. Therefore, for disassembling via objdump the flag “-M x86-64” has to be used.
29 lines
496 B
Text
29 lines
496 B
Text
OUTPUT_FORMAT("elf64-x86-64")
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OUTPUT_ARCH("i386:x86-64")
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ENTRY(start)
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phys = 0x000000100000;
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SECTIONS
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{
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kernel_start = phys;
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.mboot phys : AT(ADDR(.mboot)) {
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*(.mboot)
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*(.kmsg)
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}
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.text ALIGN(4096) : AT(ADDR(.text)) {
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*(.text)
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}
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.rodata ALIGN(4096) : AT(ADDR(.rodata)) {
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*(.rodata)
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*(.rodata.*)
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}
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.data ALIGN(4096) : AT(ADDR(.data)) {
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*(.data)
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}
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.bss ALIGN(4096) : AT(ADDR(.bss)) {
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bss_start = .;
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*(.bss)
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}
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bss_end = .;
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kernel_end = .;
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}
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