mirror of
https://github.com/winterknife/EVENSTAR
synced 2026-06-21 14:13:51 +00:00
winterknife
38 lines
1.8 KiB
Markdown
38 lines
1.8 KiB
Markdown
# EVENSTAR - GetCurrentProcessorNumber
|
||
|
||
## Version
|
||
- `v1.0.0`
|
||
|
||
## Brief
|
||
- `ISA: x86`
|
||
- `Mode: Protected, Compatibility, Long`
|
||
- `Bitness: 32-bit, 64-bit`
|
||
- `CPL: 0, 3`
|
||
- `OS: Windows`
|
||
- `Language: C`
|
||
- Sample code that demonstrates the usage of the `RDPID`, `RDTSCP`, and the `LSL` instructions to fetch the current logical processor's ID
|
||
|
||
## Usage
|
||
```
|
||
C:\pub\bld>GetCurrentProcessorNumber.exe
|
||
[DBG]: [*] GetCurrentProcessorNumber Built Jul 6 2025 16:46:57
|
||
Press any key to continue . . .
|
||
[DBG]: [+] Logical processor count = 0n2
|
||
[DBG]: [+] Pinned all the threads of the current process to logical processor = 0n0
|
||
[DBG]: [+] Current logical processor's ID = 0n0
|
||
[DBG]: [+] Pinned all the threads of the current process to logical processor = 0n1
|
||
[DBG]: [+] Current logical processor's ID = 0n1
|
||
Press any key to continue . . .
|
||
```
|
||
|
||
## Tested OS Versions
|
||
- `Windows 11 21H2 Build 22000 Revision 675 64-bit`
|
||
|
||
## References
|
||
1. [Alex Ionescu’s Blog - Solution to Challenge](https://www.alex-ionescu.com/solution-to-challenge/)
|
||
2. [Processor Groups](https://learn.microsoft.com/en-us/windows/win32/procthread/processor-groups)
|
||
3. [GetCurrentProcessorNumber function (processthreadsapi.h)](https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-getcurrentprocessornumber)
|
||
4. [Multiple Processors](https://learn.microsoft.com/en-us/windows/win32/procthread/multiple-processors)
|
||
5. [On pinning and isolating CPU cores](https://manuel.bernhardt.io/posts/2023-11-16-core-pinning/)
|
||
6. [C++11 threads, affinity and hyperthreading](https://eli.thegreenplace.net/2016/c11-threads-affinity-and-hyperthreading/)
|
||
7. [Intel® Intrinsics Guide](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#ig_expand=5089,5263) |