JNBE

COND_BR I86 x86_64

JNBE is an instruction of the x86_64 architecture (x86 / x86-64 (covers 16/32/64-bit modes)), category COND_BR. This page lists its 5 encoding forms, distinguished by opcode bytes: 77, 87.

Each form below links to its full decode: the operand roles and where each one is encoded in the instruction, the flag and register effects, and any micro-op sequence authored for it.

X86_JNBE_X86_LEGACY_0F_87_280120
rel16
X86_LEGACY 87
X86_JNBE_X86_LEGACY_ONEBYTE_77_655597
rel8
X86_LEGACY 77
XED_JNBE_X86_LEGACY_0F_87_152340
RELBR:r:d REG0=XED_REG_RIP:rw:SUPP
X86_LEGACY 87 I86
XED_JNBE_X86_LEGACY_0F_87_344666
RELBR:r:z REG0=XED_REG_EIP:rw:SUPP
X86_LEGACY 87 I86
XED_JNBE_X86_LEGACY_ONEBYTE_77_344363
RELBR:r:b:i8 REG0=XED_REG_RIP:rw:SUPP RELBR:r:b:i8 REG0=XED_REG_EIP:rw:SUPP
X86_LEGACY 77 77 I86