54 lines
742 B
ArmAsm
54 lines
742 B
ArmAsm
# uint64_t read_ip()
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.global read_ip
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read_ip:
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popq %rax
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jmp *%rax
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# void start_kernel_thread()
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.global start_kernel_thread
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start_kernel_thread:
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call get_thread_start_sp
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movq %rax, %rsp
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# STACK LAYOUT
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# on_exit arg
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# on_exit func
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# entry arg
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# entry func
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movq 8(%rsp), %rdi
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movq 0(%rsp), %rsi
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sti
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call *%rsi
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movq 24(%rsp), %rdi
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movq 16(%rsp), %rsi
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call *%rsi
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.global start_userspace_thread
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start_userspace_thread:
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call get_thread_start_sp
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movq %rax, %rsp
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# STACK LAYOUT
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# entry
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# argc
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# argv
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# envp
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# userspace stack
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call get_userspace_thread_stack_top
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popq %rdi
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popq %rsi
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popq %rdx
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popq %rcx
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popq %rbx
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pushq $(0x20 | 3)
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pushq %rax
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pushq $0x202
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pushq $(0x18 | 3)
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pushq %rbx
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iretq
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