RDMSR | x86 Instruction Set Reference
ウェブRDMSR Load MSR specified by ECX into EDX:EAX. # Description Loads the contents of a 64-bit model specific register (MSR) specified in the ECX register into registers EDX:EAX. The input value loaded into the ECX register is ...
rdmsr (Read MSR) - Windows drivers | Microsoft Learn
ウェブ2023年10月25日 · The rdmsr command reads a Model-Specific Register (MSR) value from the specified address. rdmsr Address Parameters Address Specifies the address of the MSR. Environment Modes Kernel mode only Targets Live debugging ...
MSR是个什么寄存器 - CSDN博客
ウェブ2024年4月22日 · 为了解决这个问题，从奔腾处理器开始，英特尔开始提供WRMSR和RDMSR这对指令来访问当前和未来会出现的“特定模块的寄存器”。 比如说，这里读取一个测试代码的寄存器，我们不用操心具体使用哪个指令来读取具体的寄存器，而是使用 RDMSR 来读取这个测试代码模型下使用的寄存器，具体如何读取是 ...
MSRレジスタを読み込むデバイスドライバ(32bit)を作成しIntel …
ウェブ2024年1月15日 · MSRレジスタを呼び出すrdmsr命令は特権命令なのでカーネルモードでしか動作しません。. MSRレジスタを呼び出す32bitデバイスドライバ (rdmsrdrv.sys)をインストールした状態で、別のプログラム (cputemp2.exe)からデバイスドライバを制御し各スレッドごとにCPUの ...
Ubuntu Manpage: rdmsr - tool for reading CPU machine ...
ウェブrdmsr is a tool used for reading a CPU's machine specific registers (MSR). Note: if you're running a Debian kernel, be sure that the msr.ko kernel module is loaded. 'modprobe msr' should do the trick. Otherwise, you'll get --help,-h ...
GNU GRUB Manual 2.12: rdmsr
ウェブ17.4.59 rdmsr. Command:: rdmsr 0xADDR [-v VARNAME] Read a model-specific register at address 0xADDR. If the parameter -v is used and an environment variable VARNAME is given, set that environment variable to the value that was read. Please note that on SMP systems, reading from a MSR that has a scope per hardware thread, …
rdmsr (read model-specific register) | HyperDbg Documentation
ウェブIOCTL. This function works by calling DeviceIoControl with IOCTL = IOCTL_DEBUGGER_READ_OR_WRITE_MSR, you have to send it in the following structure. Where Msr is ecx value for 'rdmsr' or 'wrmsr' instruction, CoreNumber is the target core that you want to read or write on it and ActionType shows whether it's an …
The "rdmsr" and "wrmsr" - Intel Community
ウェブ2018年7月31日 · 6,309 Views. The "rdmsr" and "wrmsr" programs support command-line arguments to program access the MSR using a specific core (e.g., "rdmsr -p 0 0x186") or to access the MSR using each core (e.g., "rdmsr -a 0x186"). This also works for "wrmsr", so it is easy to configure the counters on all cores at once. The "NMI watchdog" often …
Execute RDMSR and WRMSR instructions from C/C++ code
ウェブ2011年5月5日 · 4. Chances are, you are running this code on an x86 processor within Ring 3. You do not have the privileges to execute this command. Period. This is a hardware limitation. The only way to execute that instruction is to go into Ring 0 and chances are, your OS won't let you do that. You will need to write a kernel-mode driver …
How to use RDSMR/WRMSR at ring 3 - Intel Community
ウェブ01-19-2021 08:23 AM. If you only need to read the core performance counters, then you can do that with the RDPMC instruction at user level if the system configuration bit CR4.PCE is set. For Linux systems there is already a kernel device driver interface to allow user-mode programs to request MSR reads or writes.
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