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Instruction Set Architecture

Section Subsection Specified instruction
Data processing - immediate Arithmetic (immediate) 12
Logical (immediate) 10
Move (wide immediate) 6
Move (immediate) 6
PC-relative address calculation 2
Extract register 2
In total: 38
Data processing - register Arithmetic (shifted register) 12
Arithmetic (extending register) 12
Logical (shifted register) 20
Move (register) 4
Multiply and divide 18
Divide 4
In total: 70
Branches, Exception generation, and System instructions Conditional branch 7
Unconditional branch (immediate) 2
Unconditional branch (register) 3
Exception generation and return 10
System register instructions 6
System instructions 8
Hint instructions 7
Barriers and CLREX instructions 4
In total: 47
Loads and stores Load/store register 2
Load-Exclusive/Store-Exclusive 12
Load-Acquire/Store-Release 20
In total: 34

Data processing - immediate

Arithmetic (immediate)

  1. ADD (immediate). Add.
    Specifications: add, add_32
  2. SUB (immediate). Subtract.
    Specifications: sub, sub_32
  3. ADDS (immediate). Add and set flags.
    Specifications: adds, adds_32
  4. SUBS (immediate). Subtract and set flags.
    Specifications: subs, subs_32
  5. CMP (immediate). Compare.
    Specifications: cmp, cmp_32
  6. CMN (immediate). Compare negative.
    Specifications: cmn, cmn_32

In total: 12.

Logical (immediate)

  1. AND (immediate). Bitwise AND
    Specifications: and_bitmask, and_bitmask_32
  2. ANDS (immediate). Bitwise AND and set flags
    Specifications: ands_bitmask, ands_bitmask_32
  3. EOR (immediate). Bitwise exclusive OR
    Specifications: eor_bitmask, eor_bitmask_32
  4. ORR (immediate). Bitwise inclusive OR
    Specifications: orr_bitmask, orr_bitmask_32
  5. TST (immediate). TST Test bits
    Specifications: tst_bitmask, tst_bitmask_32

In total: 10.

Move (wide immediate)

  1. MOVZ. Move wide with zero
    Specifications: movz, movz_32
  2. MOVN. Move wide with NOT
    Specifications: movn, movn_32
  3. MOVK. Move wide with keep
    Specifications: movk, movk_32

In total: 6.

Move (immediate)

  1. MOV (wide immediate). Move (wide immediate)
    Specifications: mov_wide_imm, mov_wide_imm_32
  2. MOV (inverted wide immediate). Move (inverted wide immediate)
    Specifications: mov_inv_wide_imm, mov_inv_wide_imm_32
  3. MOV (bitmask immediate). Move (bitmask immediate)
    Specifications: mov_bitmask, mov_bitmask_32

In total: 6.

PC-relative address calculation

  1. ADRP. Compute address of 4KB page at a PC-relative offset
    Specifications: adrp
  2. ADR. Compute address of label at a PC-relative offset.
    Specifications: adr

In total: 2.

Extract register

  1. EXTR. Extract register from pair
    Specifications: extr, extr_32

In total: 2.

Data processing - register

Arithmetic (shifted register)

  1. ADD (shifted register). Add
    Specifications: add_sh_reg, add_sh_reg_32
  2. ADDS (shifted register). Add and set flags
    Specifications: adds_sh_reg, adds_sh_reg_32
  3. SUB (shifted register). Subtract
    Specifications: sub_sh_reg, sub_sh_reg_32
  4. SUBS (shifted register). Subtract and set flags
    Specifications: subs_sh_reg, subs_sh_reg_32
  5. CMN (shifted register). Compare negative
    Specifications: cmn_sh_reg, cmn_sh_reg_32
  6. CMP (shifted register). Compare
    Specifications: cmp_sh_reg, cmp_sh_reg_32

In total: 12.

Arithmetic (extending register)

  1. ADD (extended register). Add
    Specifications: add_ex_reg, add_ex_reg_32
  2. ADDS (extended register). Add and set flags
    Specifications: adds_ex_reg, adds_ex_reg_32
  3. SUB (extended register). Subtract
    Specifications: sub_ex_reg, sub_ex_reg_32
  4. SUBS (extended register). Subtract and set flags
    Specifications: subs_ex_reg, subs_ex_reg_32
  5. CMN (extended register). Compare negative
    Specifications: cmn_ex_reg, cmn_ex_reg_32
  6. CMP (extended register). Compare
    Specifications: cmp_ex_reg, cmp_ex_reg_32

In total: 12.

Logical (shifted register)

  1. AND (shifted register). Bitwise AND
    Specifications: and_bitwise, and_bitwise_32
  2. ANDS (shifted register). Bitwise AND and set flags
    Specifications: ands_bitwise, ands_bitwise_32
  3. BIC (shifted register). Bitwise bit clear
    Specifications: bic_bitwise, bic_bitwise_32
  4. BICS (shifted register). Bitwise bit clear and set flags
    Specifications: bics_bitwise, bics_bitwise_32
  5. EON (shifted register). Bitwise exclusive OR NOT
    Specifications: eon_bitwise, eon_bitwise_32
  6. EOR (shifted register). Bitwise exclusive OR
    Specifications: eor_bitwise, eor_bitwise_32
  7. ORR (shifted register). Bitwise inclusive OR
    Specifications: orr_bitwise, orr_bitwise_32
  8. MVN. Bitwise NOT
    Specifications: mvn_bitwise, mvn_bitwise_32
  9. ORN (shifted register). Bitwise inclusive OR NOT
    Specifications: orn_bitwise, orn_bitwise_32
  10. TST (shifted register). Test bits
    Specifications: tst_bitwise, tst_bitwise_32

In total: 20.

Move (register)

  1. MOV (register). Move register
    Specifications: mov_reg, mov_reg_32
  2. MOV (to/from SP). Move register to SP or move SP to register
    Specifications: mov_sp, mov_sp_32

In total: 4.

Multiply and divide

  1. MADD. Multiply-add
    Specifications: madd, madd_32
  2. MSUB. Multiply-subtract
    Specifications: msub, msub_32
  3. MNEG. Multiply-negate
    Specifications: mneg, mneg_32
  4. MUL. Multiply
    Specifications: mul, mul_32
  5. SMADDL. Signed multiply-add long
    Specifications: smaddl
  6. SMSUBL. Signed multiply-subtract long
    Specifications: smsubl
  7. SMNEGL. Signed multiply-negate long
    Specifications: smnegl
  8. SMULL. Signed multiply long
    Specifications: smull
  9. SMULH. Signed multiply high
    Specifications: smulh
  10. UMADDL. Unsigned multiply-add long
    Specifications: umaddl
  11. UMSUBL. Unsigned multiply-subtract long
    Specifications: umsubl
  12. UMNEGL. Unsigned multiply-negate long
    Specifications: umnegl
  13. UMULL. Unsigned multiply long
    Specifications: umull
  14. UMULH. Unsigned multiply high
    Specifications: umulh

In total: 18.

Divide

  1. SDIV. Signed divide
    Specifications: sdiv, sdiv_32
  2. UDIV. Unsigned divide
    Specifications: udiv, udiv_32

In total: 4.

Branches, Exception generation, and System instructions

Conditional Branch

  1. B.cond. Branch conditionally
    Specifications: b
  2. CBNZ. Compare and branch if nonzero
    Specifications: cbnz, cbnz_32
  3. CBZ. Compare and branch if zero
    Specifications: cbz, cbz_32
  4. TBNZ. Test bit and branch if nonzero
    Specifications: tbnz
  5. TBZ. Test bit and branch if zero
    Specifications: tbz

In total: 7.

Unconditional branch (immediate)

  1. B. Branch unconditionally
    Specifications: b_imm
  2. BL. Branch with link
    Specifications: bl

In total: 2.

Unconditional branch (register)

  1. BLR. Branch with link to register
    Specifications: blr
  2. BR. Branch to register
    Specifications: br
  3. RET. Return from subroutine
    Specifications: ret

In total: 3.

Exception generation and return

Exception generation

  1. BRK. Breakpoint Instruction
    Specifications: brk
  2. HLT. Halt Instruction HLT
    Specifications: hlt
  3. HVC. Generate exception targeting Exception level 2 HVC
    Specifications: hvc
  4. SMC. Generate exception targeting Exception level 3 SMC
    Specifications: smc
  5. SVC. Generate exception targeting Exception level 1
    Specifications: svc

In total: 5.

Exception return

  1. ERET. Exception return using current ELR and SPSR
    Specifications: eret

In total: 1.

Debug state

  1. DCPS1. Debug switch to Exception level 1 DCPS1
    Specifications: dcps1
  2. DCPS2. Debug switch to Exception level 2 DCPS2
    Specifications: dcps2
  3. DCPS3. Debug switch to Exception level 3 DCPS3
    Specifications: dcps3
  4. DRPS. Debug restore PE state
    Specifications: drps

In total: 4.

System register instructions

  1. MRS. Move System register to general-purpose register MRS
    Specifications: msr
  2. MSR. Move general-purpose register to System register MSR (register)
    Specifications: mrs
  3. MSR. Move immediate to PE state field MSR (immediate)
    Specifications: msr_dc, msr_ds, msr_ss, msr_uao

In total: 6.

System instructions

  1. SYS. System instruction
    Specifications: sys
  2. SYSL. System instruction with result
    Specifications: sysl
  3. IC. Instruction cache maintenance
    Specifications: ic, ic_reg
  4. DC. Data cache maintenance
    Specifications: dc
  5. AT. Address translation
    Specifications: at
  6. TLBI. TLB Invalidate
    Specifications: tlbi, tlbi_reg

In total: 8.

Hint instructions

  1. NOP. No operation
    Specifications: nop
  2. YIELD. Yield hint
    Specifications: yield_op
  3. WFE. Wait for event
    Specifications: wfe
  4. WFI. Wait for interrupt
    Specifications: wfi
  5. SEV. Send event
    Specifications: sev
  6. SEVL. Send event local
    Specifications: sevl
  7. HINT. Unallocated hint
    Specifications: hint

In total: 7.

Barriers and CLREX instructions

  1. CLREX. Clear Exclusives monitor
    Specifications: clrex
  2. DMB. Data memory barrier
    Specifications: dmb
  3. DSB. Data synchronization barrier
    Specifications: dsb
  4. ISB. Instruction synchronization barrier
    Specifications: isb

In total: 4.

Loads and stores

Load/store register

  1. LDR. Load register (immediate offset)
    Specifications: ldr_postindex
  2. STR. Store register (immediate offset)
    Specifications: str_postindex

In total: 2.

Load-Exclusive/Store-Exclusive

  1. LDXR. Load Exclusive register
    Specifications: ldxr, ldxr_32
  2. LDXRB. Load Exclusive byte
    Specifications: ldxrb_32
  3. LDXRH. Load Exclusive halfword
    Specifications: ldxrh_32
  4. LDXP. Load Exclusive pair
    Specifications: ldxp, ldxp_32
  5. STXR. Store Exclusive register
    Specifications: stxr, stxr_32
  6. STXRB. Store Exclusive byte
    Specifications: stxrb_32
  7. STXRH. Store Exclusive halfword
    Specifications: stxrh_32
  8. STXP. Store Exclusive pair
    Specifications: stxp, stxp_32

In total: 12.

Load-Acquire/Store-Release

Non-exclusive Load-Acquire and Store-Release instructions

  1. LDAR. Load-Acquire Register
    Specifications: ldar, ldar_32
  2. LDARB. Load-Acquire Byte
    Specifications: ldarb
  3. LDARH. Load-Acquire Halfword
    Specifications: ldarh
  4. STLR. Store-Release Register
    Specifications: stlr, stlr_32
  5. STLRB. Store-Release Byte
    Specifications: stlrb
  6. STLRH. Store-Release Halfword
    Specifications: stlrh

In total: 8.

Exclusive Load-Acquire and Store-Release instructions

  1. LDAXR. Load-Acquire Exclusive register
    Specifications: ldaxr, ldaxr_32
  2. LDAXRB. Load-Acquire Exclusive byte
    Specifications: ldaxrb_32
  3. LDAXRH. Load-Acquire Exclusive halfword
    Specifications: ldaxrh_32
  4. LDAXP. Load-Acquire Exclusive pair
    Specifications: ldaxp, ldaxp_32
  5. STLXR. Store-Release Exclusive register
    Specifications: stlxr, stlxr_32
  6. STLXRB. Store-Release Exclusive byte
    Specifications: stlxrb_32
  7. STLXRH. Store-Release Exclusive halfword
    Specifications: stlxrh_32
  8. STLXP. Store-Release Exclusive pair
    Specifications: stlxp, stlxp_32

In total: 12.

Pseudo instructions

psldr, psldr32

In total: 2.

Updated by Alexander Kamkin over 1 year ago · 17 revisions