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Matheus
38 lines
517 B
NASM
38 lines
517 B
NASM
global arch_switchcontext
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arch_switchcontext:
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mov rsp,rdi
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add rsp, 24 ; cr2 gs fs
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pop rax
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mov es,rax
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pop rax
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mov ds,rax
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pop rax
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pop rbx
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pop rcx
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pop rdx
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pop r8
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pop r9
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pop r10
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pop r11
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pop r12
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pop r13
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pop r14
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pop r15
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pop rdi
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pop rsi
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pop rbp
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add rsp,8 ; remove error code
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cmp qword [rsp+8], 0x3b ; user cs
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jne .noswap
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swapgs
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mov qword [rsp+32], 0x43
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.noswap:
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iretq
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