JCXZ performs a short jump (with maximum range 128 bytes) if and
only if the contents of the CX register is 0. JECXZ does the
same thing, but with ECX.
jrcxz
x86-64 and laterJump if RCX register is 0
jrcxz imm8 {near|short}Loading...
Forms
Every form of jrcxz the assembler accepts, from NASM's own instruction table.
The second column is the processor that introduced the form; a badge marks a form that needs
an extension, that is lockable, or that long mode dropped.
| Form | Since | Notes |
|---|---|---|
| jrcxz imm8 {near|short} | x86-64 | long |