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extern exit_handler : proc
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extern vmresume_failure : proc
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.code
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vmxlaunch_processor proc
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pushfq ; vmlaunch sets some flags if an error happens...
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mov rcx, 0681Ch ; VMCS_GUEST_RSP
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vmwrite rcx, rsp ; current rsp pointer...
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mov rcx, 0681Eh ; VMCS_GUEST_RIP
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lea rdx, done ;
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vmwrite rcx, rdx ; return C0FFEE on success...
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vmlaunch
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pushfq ; push rflags to the stack then put it into rax...
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pop rax ;
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popfq ; restore rflags back to what it was in the c++ code...
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ret
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done:
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popfq ; restore flags and return back to c++ code...
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mov rax, 0C0FFEEh
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ret
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vmxlaunch_processor endp
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vmxexit_handler proc
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push rax
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push rbx
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push rcx
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push rdx
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push rsi
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push rdi
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push rbp
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push r8
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push r9
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push r10
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push r11
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push r12
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push r13
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push r14
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push r15
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sub rsp, 0108h ; 16 xmm registers... and +8 bytes for alignment...
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movaps [rsp], xmm0
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movaps [rsp + 010h], xmm1
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movaps [rsp + 020h], xmm2
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movaps [rsp + 030h], xmm3
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movaps [rsp + 040h], xmm4
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movaps [rsp + 050h], xmm5
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movaps [rsp + 060h], xmm6
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movaps [rsp + 070h], xmm7
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movaps [rsp + 080h], xmm8
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movaps [rsp + 090h], xmm9
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movaps [rsp + 0A0h], xmm10
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movaps [rsp + 0B0h], xmm11
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movaps [rsp + 0C0h], xmm12
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movaps [rsp + 0D0h], xmm13
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movaps [rsp + 0E0h], xmm14
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movaps [rsp + 0F0h], xmm15
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mov rcx, rsp
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sub rsp, 20h
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call exit_handler
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add rsp, 20h
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movups xmm0, [rsp]
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movups xmm1, [rsp + 010h]
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movups xmm2, [rsp + 020h]
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movups xmm3, [rsp + 030h]
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movups xmm4, [rsp + 040h]
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movups xmm5, [rsp + 050h]
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movups xmm6, [rsp + 060h]
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movups xmm7, [rsp + 070h]
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movups xmm8, [rsp + 080h]
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movups xmm9, [rsp + 090h]
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movups xmm10, [rsp + 0A0h]
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movups xmm11, [rsp + 0B0h]
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movups xmm12, [rsp + 0C0h]
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movups xmm13, [rsp + 0D0h]
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movups xmm14, [rsp + 0E0h]
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movups xmm15, [rsp + 0F0h]
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add rsp, 0108h ; 16 xmm registers... and +8 bytes for alignment...
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pop r15
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pop r14
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pop r13
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pop r12
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pop r11
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pop r10
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pop r9
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pop r8
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pop rbp
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pop rdi
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pop rsi
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pop rdx
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pop rcx
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pop rbx
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pop rax
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vmresume
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call vmresume_failure
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int 3
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vmxexit_handler endp
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end
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