Mark
51 lines
981 B
ArmAsm
51 lines
981 B
ArmAsm
#include <config.h>
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.set MULTIBOOT_LOADER_MAGIC, 0x36d76289
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.section .text
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.global _entry_common
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.type _entry_common, %function
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_entry_common:
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.code32
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// Guess boot method by checking if
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// %eax has loader magic value
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movl $0x36d76289, %edx
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cmp %eax, %edx
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je 1f
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jmp _entry_yboot
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1:
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leal _entry_multiboot - 0xFFFFFF0000000000, %edx
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jmp *%edx
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.code64
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.size _entry_common, . - _entry_common
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.global kernel_pre_entry
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.type kernel_pre_entry, %function
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kernel_pre_entry:
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// Full 64-bit now
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leaq kernel_stacks_bottom(%rip), %rsp
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addq $8192, %rsp
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movq %rdi, %rbx
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call _init
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movq %rbx, %rdi
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xorq %rbp, %rbp
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pushq %rbp
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call kernel_main
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1:
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cli
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hlt
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jmp 1b
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.size kernel_pre_entry, . - kernel_pre_entry
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.global kernel_stacks_top
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.global kernel_stacks_bottom
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kernel_stacks_bottom:
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#if defined(AMD64_SMP)
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.skip AMD64_KERNEL_STACK * AMD64_MAX_SMP
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#else
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.skip AMD64_KERNEL_STACK
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#endif
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kernel_stacks_top:
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