LOOPE

RELBR:r:b:i8 REG0=ArCX():rw:SUPP REG1=rIP():rw:SUPP RELBR:r:b:i8 REG0=ArCX():rw:SUPP REG1=rIP():rw:SUPP RELBR:r:b:i8 REG0=ArCX():rw:SUPP REG1=rIP():rw:SUPP

x86_64 X86_LEGACY COND_BR I86 source: xed branch

XED_LOOPE_X86_LEGACY_ONEBYTE_E1_714393

Encoding

encoding_kindX86_LEGACY
opcode_bytesE1 E1 E1
opcode_mapONEBYTE
mandatory_prefix-
has_modrmFalse
cpl3
raw_encoding0xE1 MODEP5=1 REP=0 norex2_prefix DF64() BRDISP8() IMMUNE66_LOOP64() 0xE1 MODEP5=1 REP=3 norex2_prefix DF64() BRDISP8() IMMUNE66_LOOP64() 0xE1 MODEP5=0 norex2_prefix DF64() BRDISP8() IMMUNE66_LOOP64()

Operands (9)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 RELBR REL_BR b R EXPLICIT IMM
1 REG0 REG RW SUPPRESSED MODRM_REG
2 REG1 REG RW SUPPRESSED MODRM_REG
3 RELBR REL_BR b R EXPLICIT IMM
4 REG2 REG RW SUPPRESSED MODRM_REG
5 REG3 REG RW SUPPRESSED MODRM_REG
6 RELBR REL_BR b R EXPLICIT IMM
7 REG4 REG RW SUPPRESSED MODRM_REG
8 REG5 REG RW SUPPRESSED MODRM_REG

Flag effects (1)

ZF = READ

Micro-ops sequence (0)

No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.