instruction-count ( -- n )

Vocabulary

cpu.x86.features

Inputs

None

Outputs

n

a number

Word description

The word returns the CPU's Timestamp Counter: https://en.wikipedia.org/wiki/Time_Stamp_Counter.

Definition

USING: system ;

IN: cpu.x86.features

HOOK: instruction-count cpu ( -- n )

Methods

USING: alien alien.c-types cpu.x86.assembler cpu.x86.features
system ;

M: x86.32 instruction-count
    longlong { } cdecl [ RDTSC ] alien-assembly ;


USING: alien alien.c-types cpu.x86.assembler
cpu.x86.assembler.operands cpu.x86.features system ;

M: x86.64 instruction-count
    longlong { } cdecl
    [ RAX 0 MOV RDTSC RDX 32 SHL RAX RDX OR ] alien-assembly ;