- of CPU
cycles since its reset. The
instruction RDTSC returns the TSC in EDX:EAX. In x86-64 mode,
RDTSC also
clears the
upper 32 bits of RAX and RDX. Its...
-
CPUID bit (leaf 8000_0007:EDX[8]).
RDTSC can be run
outside Ring 0 only if CR4.TSD=0. On
Intel Pentium and AMD K5,
RDTSC cannot be run in Virtual-8086 mode...
-
removed in
favor of prctl(). In some
kernel versions,
seccomp disables the
RDTSC x86 instruction,
which returns the
number of
elapsed processor cycles since...
-
Structure in the
Developers Manual, Vol 1). New instructions: CPUID, CMPXCHG8B,
RDTSC, RDMSR, WRMSR, RSM. Test
registers TR0–TR7 and MOV
instructions for access...
-
object files,
using the C
application binary interface (ABI). uint64_t __
rdtsc (); //
return internal CPU
clock counter uint64_t __popcnt64 (uint64_t n);...
-
group from the kernel, as well as
nondeterministic CPU
effects (such as
rdtsc).
These inputs are
logged to disk and
become the "trace". Once the trace...
-
monitor MONITOR and
MWAIT instructions (PNI) 3 4 tsc Time
Stamp Counter and
RDTSC instruction ds-cpl CPL
qualified debug store 4 5 msr Model-specific registers...
- mode. 2 TSD Time
Stamp Disable If set,
RDTSC instruction can only be
executed when in ring 0,
otherwise RDTSC can be used at any
privilege level. 3 DE...
- the 6x86MX, by
adding a Time
Stamp Counter to
support the P5 Pentium's
RDTSC instruction.
Support for the
Pentium Pro's
CMOVcc instructions were also...
- the need to use
other timestamp calculations such as an x86-based CPU's
RDTSC instruction. This
provides improved efficiency,
since the CPU does not need...
