BNDCN

REG0=BND_R():r AGEN:r REG0=BND_R():r AGEN:r REG0=BND_R():r REG1=GPR64_B():r REG0=BND_R():r REG1=GPR32_B():r

x86_64 X86_LEGACY MPX MPX source: xed

XED_BNDCN_X86_LEGACY_0F_1B_710993

Encoding

encoding_kindX86_LEGACY
opcode_bytes1B 0F 1B 0F 1B 0F 1B
opcode_map0F
mandatory_prefix-
has_modrmTrue
requires_modelong
attributesEXCEPTION_BR
cpl3
raw_encoding0x0F 0x1B MPXMODE=1 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() f2_refining_prefix mode64 0x0F 0x1B MPXMODE=1 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM() f2_refining_prefix not64 eamode32 0x0F 0x1B MPXMODE=1 MOD[mm] MOD=3 REG[rrr] RM[nnn] f2_refining_prefix mode64 0x0F 0x1B MPXMODE=1 MOD[mm] MOD=3 REG[rrr] RM[nnn] f2_refining_prefix not64 eamode32

Operands (8)

# Role Kind Class / Reg Width Access Visibility Encoded in
0 REG0 REG R EXPLICIT MODRM_REG
1 AGEN REG R EXPLICIT
2 REG1 REG R EXPLICIT MODRM_REG
3 AGEN REG R EXPLICIT
4 REG2 REG R EXPLICIT MODRM_REG
5 REG3 REG R EXPLICIT MODRM_REG
6 REG4 REG R EXPLICIT MODRM_REG
7 REG5 REG R EXPLICIT MODRM_REG

Micro-ops sequence (0)

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