Function at 0x464de0
Capabilities:
Check for time delay via queryperformancecounter
Execute anti-debugging instructions

Disassembly:
push ebp
mov ebp, esp
push ebx
push edi
push esi
and esp, 0xfffffff0
sub esp, 0x50
mov eax, dword [0x64a040]
xor eax, ebp
mov dword [esp + 0x48], eax
movsd xmm1, qword [0x64e738]
xorpd xmm0, xmm0
ucomisd xmm1, xmm0
jne 0x464f93
jp 0x464f93
mov esi, dword [sym.imp.KERNEL32.dll_GetCurrentThread]
call esi
push eax
call dword [sym.imp.KERNEL32.dll_GetThreadPriority]
mov dword [esp + 0x10], eax
call esi
push 2
push eax
call dword [sym.imp.KERNEL32.dll_SetThreadPriority]
mov eax, dword [0x64e748]
mov ecx, dword [0x64d82c]
mov edx, dword fs:[0x2c]
mov ecx, dword [edx + ecx*4]
cmp eax, dword [ecx + 4]
jle 0x464e7e
push 0x64e748
call fcn.0057dc73
add esp, 4
cmp dword [0x64e748], 0xffffffff
jne 0x464e7e
rdtsc
mov dword [0x64e740], eax
mov dword [0x64e744], edx
push 0x64e748
call fcn.0057dcc2
add esp, 4
mov eax, dword [0x64e758]
mov ecx, dword [0x64d82c]
mov edx, dword fs:[0x2c]
mov ecx, dword [edx + ecx*4]
cmp eax, dword [ecx + 4]
jle 0x464ee0
push 0x64e758
call fcn.0057dc73
add esp, 4
cmp dword [0x64e758], 0xffffffff
jne 0x464ee0
xor eax, eax
lea esi, [esp + 0x40]
mov dword [esi + 4], eax
mov dword [esi], eax
push esi
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov eax, dword [esi]
mov ecx, dword [esi + 4]
mov dword [0x64e754], ecx
mov dword [0x64e750], eax
push 0x64e758
call fcn.0057dcc2
add esp, 4
rdtsc
mov dword [esp + 0xc], eax
mov dword [esp + 8], edx
xor eax, eax
lea esi, [esp + 0x40]
mov dword [esi + 4], eax
mov dword [esi], eax
push esi
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov ebx, dword [esi]
mov edi, dword [esi + 4]
call dword [sym.imp.KERNEL32.dll_GetCurrentThread]
push dword [esp + 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_SetThreadPriority]
xor eax, eax
mov dword [esi + 4], eax
mov dword [esi], eax
push esi
call dword [sym.imp.KERNEL32.dll_QueryPerformanceFrequency]
mov eax, dword [0x64e754]
mov ecx, dword [0x64e750]
cmp ebx, ecx
mov edx, edi
sbb edx, eax
jl 0x464f9b
sub ebx, ecx
movd xmm0, ebx
sbb edi, eax
movd xmm1, edi
punpckldq xmm0, xmm1
movq qword [esp + 0x30], xmm0
fild qword [esp + 0x30]
fstp qword [esp + 0x28]
movsd xmm0, qword [esp + 0x28]
fild qword [esp + 0x40]
fstp qword [esp + 0x38]
divsd xmm0, qword [esp + 0x38]
xorps xmm2, xmm2
movsd xmm1, qword [0x62c640]
ucomisd xmm1, xmm0
jbe 0x464fda
movaps xmmword [esp + 0x10], xmm2
mov ecx, dword [esp + 0x48]
xor ecx, ebp
call fcn.005810d5
movaps xmm0, xmmword [esp + 0x10]
lea esp, [ebp - 0xc]
pop esi
pop edi
pop ebx
pop ebp
ret
movapd xmmword [esp + 0x10], xmm1
jmp 0x464f7b
call fcn.0057dc60
push dword [eax]
call fcn.0059823f
add esp, 4
mov esi, eax
call fcn.0057dc60
mov edi, dword [eax]
push 0x62c648
call fcn.005b8bb0
add esp, 4
push esi
push edi
push str.PERFETTO_CHECK_perf_counter_now___perf_counter_initial_
push str._s__errno:__d___s_
push 0x5b
push eax
push 3
call fcn.005b97f0
add esp, 0x1c
int3
mov eax, dword [0x64e744]
mov ecx, dword [0x64e740]
cmp dword [esp + 0xc], ecx
mov edx, dword [esp + 8]
sbb edx, eax
jb 0x465042
mov edx, dword [esp + 0xc]
sub edx, ecx
mov ecx, dword [esp + 8]
sbb ecx, eax
movd xmm1, edx
movd xmm2, ecx
punpckldq xmm1, xmm2
punpckldq xmm1, xmmword [0x62c620]
subpd xmm1, xmmword [0x62c630]
haddpd xmm1, xmm1
divsd xmm1, xmm0
movsd qword [esp + 0x20], xmm1
movsd xmm0, qword [esp + 0x20]
movlpd qword [0x64e738], xmm0
movsd xmm2, qword [0x64e738]
jmp 0x464f76
call fcn.0057dc60
push dword [eax]
call fcn.0059823f
add esp, 4
mov esi, eax
call fcn.0057dc60
mov edi, dword [eax]
push 0x62c648
call fcn.005b8bb0
add esp, 4
push esi
push edi
push str.PERFETTO_CHECK_tsc_now___tsc_initial_
push str._s__errno:__d___s_
push 0x66
jmp 0x464fce