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Kernel: Support loading the kernel at almost arbitrary virtual addresses

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This enables further work on implementing KASLR by adding relocation
support to the pre-kernel and updating the kernel to be less dependent
on specific virtual memory layouts.
This commit is contained in:
Gunnar Beutner 2021-07-26 15:10:51 +02:00 • committed by Andreas Kling
parent e3d2ca6bd2
commit 57417a3d6e
20 changed files with 123 additions and 87 deletions
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2
Kernel/Arch/x86/i386/Boot/ap_setup.S
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@ -109,7 +109,7 @@ apic_ap_start32_2:
/* push the Processor pointer this CPU is going to use */
movl (ap_cpu_init_processor_info_array - apic_ap_start)(%ebp), %eax
addl kernel_base, %eax
addl kernel_load_base, %eax
movl 0(%eax, %esi, 4), %eax
push %eax

2
Kernel/Arch/x86/x86_64/Boot/ap_setup.S
View file

@ -141,7 +141,7 @@ apic_ap_start64:
/* push the Processor pointer this CPU is going to use */
movq (ap_cpu_init_processor_info_array - apic_ap_start)(%ebp), %rax
leaq kernel_base(%rip), %r8
leaq kernel_load_base(%rip), %r8
movq (%r8), %r8
addq %r8, %rax
movq 0(%rax, %rsi, 4), %rax