CMPXCHG

SEMAPHORE I486REAL x86_64

4 encoding forms.

XED_CMPXCHG_X86_LEGACY_0F_B0_178054
REG0=GPR8_B():rcw REG1=GPR8_R():r REG2=XED_REG_AL:rcw:SUPP
X86_LEGACY B0 /r I486REAL
XED_CMPXCHG_X86_LEGACY_0F_B0_320705
MEM0:rcw:b REG0=GPR8_R():r REG1=XED_REG_AL:rcw:SUPP
X86_LEGACY B0 /r I486REAL
XED_CMPXCHG_X86_LEGACY_0F_B1_258234
REG0=GPRv_B():rcw REG1=GPRv_R():r REG2=OrAX():rcw:SUPP
X86_LEGACY B1 /r I486REAL
XED_CMPXCHG_X86_LEGACY_0F_B1_971171
MEM0:rcw:v REG0=GPRv_R():r REG1=OrAX():rcw:SUPP
X86_LEGACY B1 /r I486REAL