MicroTESK » MicroTESK for ARM Demo

h1. Instruction Set Architecture

{font-weight:bold; background:#ddd}. | Section | Subsection | Specified instruction |

{background:#cfc}. |/6.  "Data processing - immediate":https://forge.ispras.ru/projects/microtesk-arm-demo/wiki/Instruction_Set_Architecture#Data-processing-immediate | Arithmetic (immediate) | 12 |

{background:#cfc}. | Logical (immediate)| 10|

{background:#cfc}. | Move (wide immediate)| 6|

{background:#cfc}. | Move (immediate)| 6|

{background:#cfc}. | PC-relative address calculation| 2|

{background:#cfc}. | Extract register| 2|

{font-weight:bold; background:#ddd}. |\2. In total: | 38 |

{background:#cfc}. |/6.  "Data processing - register":https://forge.ispras.ru/projects/microtesk-arm-demo/wiki/Instruction_Set_Architecture#Data-processing-register | Arithmetic (shifted register) | 12 |

{background:#cfc}. | Arithmetic (extending register) | 12 |

{background:#cfc}. | Logical (shifted register) | 20 |

{background:#cfc}. | Move (register) | 4 |

{background:#cfc}. | Multiply and divide | 18 |

{background:#cfc}. | Divide | 4 |

{font-weight:bold; background:#ddd}. |\2. In total: | 70 |

{background:#cfc}. |/8.  "Branches, Exception generation, and System instructions":https://forge.ispras.ru/projects/microtesk-arm-demo/wiki/Instruction_Set_Architecture#Branches-Exception-generation-and-System-instructions | Conditional branch | 7 |

{background:#cfc}. | Unconditional branch (immediate) | 2 |

{background:#cfc}. | Unconditional branch (register) | 3 |

{background:#cfc}. | Exception generation and return | 10 |

{background:#cfc}. | System register instructions | 6 |

{background:#cfc}. | System instructions | 8 |

{background:#cfc}. | Hint instructions | 7 |

{background:#cfc}. | Barriers and CLREX instructions| 4 |

{font-weight:bold; background:#ddd}. |\2. In total: | 47 |

{background:#cfc}. |/3.  "Loads and stores":https://forge.ispras.ru/projects/microtesk-arm-demo/wiki/Instruction_Set_Architecture#Loads-and-stores | Load/store register | 2 |

{background:#cfc}. | Load-Exclusive/Store-Exclusive | 12 |

{background:#cfc}. | Load-Acquire/Store-Release | 20 |

{font-weight:bold; background:#ddd}. |\2. In total: | 34 |

h2. Data processing - immediate

h3. Arithmetic (immediate)

### ADD (immediate). Add.

Specification: add, add_32

### SUB (immediate). Subtract.

Specification: sub, sub_32

### ADDS (immediate). Add and set flags.

Specification: adds, adds_32

### SUBS (immediate). Subtract and set flags.

Specification: subs, subs_32

### CMP (immediate). Compare.

Specification: cmp, cmp_32

### CMN (immediate). Compare negative.

Specification: cmn, cmn_32

+In total:+ 12.

h3. Logical (immediate)

### AND (immediate). Bitwise AND

Specification: and_bitmask, and_bitmask_32

### ANDS (immediate). Bitwise AND and set flags

Specification: ands_bitmask, ands_bitmask_32

### EOR (immediate). Bitwise exclusive OR

Specification: eor_bitmask, eor_bitmask_32

### ORR (immediate). Bitwise inclusive OR

Specification: orr_bitmask, orr_bitmask_32

### TST (immediate). TST Test bits

Specification: tst_bitmask, tst_bitmask_32

+In total:+ 10.

h3. Move (wide immediate)

### MOVZ. Move wide with zero

Specification: movz, movz_32

### MOVN. Move wide with NOT

Specification: movn, movn_32

### MOVK. Move wide with keep

Specification: movk, movk_32

+In total:+ 6.

h3. Move (immediate)

### MOV (wide immediate). Move (wide immediate)

Specification: mov_wide_imm, mov_wide_imm_32

### MOV (inverted wide immediate). Move (inverted wide immediate)

Specification: mov_inv_wide_imm, mov_inv_wide_imm_32

### MOV (bitmask immediate). Move (bitmask immediate)

Specification: mov_bitmask, mov_bitmask_32

+In total:+ 6.

h3. PC-relative address calculation

### ADRP. Compute address of 4KB page at a PC-relative offset

Specification: adrp

### ADR. Compute address of label at a PC-relative offset.

Specification: adr

+In total:+ 2.

h3. Extract register

### EXTR. Extract register from pair

Specification: extr, extr_32

+In total:+ 2.

h2. Data processing - register

h3. Arithmetic (shifted register)

### ADD (shifted register). Add

Specification: add_sh_reg, add_sh_reg_32

### ADDS (shifted register). Add and set flags

Specification: adds_sh_reg, adds_sh_reg_32

### SUB (shifted register). Subtract

Specification: sub_sh_reg, sub_sh_reg_32

### SUBS (shifted register). Subtract and set flags

Specification: subs_sh_reg, subs_sh_reg_32

### CMN (shifted register). Compare negative

Specification: cmn_sh_reg, cmn_sh_reg_32

### CMP (shifted register). Compare

Specification: cmp_sh_reg, cmp_sh_reg_32

+In total:+ 12.

h3. Arithmetic (extending register)

### ADD (extended register). Add

Specification: add_ex_reg, add_ex_reg_32

### ADDS (extended register). Add and set flags

Specification: adds_ex_reg, adds_ex_reg_32

### SUB (extended register). Subtract

Specification: sub_ex_reg, sub_ex_reg_32

### SUBS (extended register). Subtract and set flags

Specification: subs_ex_reg, subs_ex_reg_32

### CMN (extended register). Compare negative

Specification: cmn_ex_reg, cmn_ex_reg_32

### CMP (extended register). Compare

Specification: cmp_ex_reg, cmp_ex_reg_32

+In total:+ 12.

h3. Logical (shifted register)

### AND (shifted register). Bitwise AND

Specification: and_bitwise, and_bitwise_32

### ANDS (shifted register). Bitwise AND and set flags

Specification: ands_bitwise, ands_bitwise_32

### BIC (shifted register). Bitwise bit clear

Specification: bic_bitwise, bic_bitwise_32

### BICS (shifted register). Bitwise bit clear and set flags

Specification: bics_bitwise, bics_bitwise_32

### EON (shifted register). Bitwise exclusive OR NOT

Specification: eon_bitwise, eon_bitwise_32

### EOR (shifted register). Bitwise exclusive OR

Specification: eor_bitwise, eor_bitwise_32

### ORR (shifted register). Bitwise inclusive OR

Specification: orr_bitwise, orr_bitwise_32

### MVN. Bitwise NOT

Specification: mvn_bitwise, mvn_bitwise_32

### ORN (shifted register). Bitwise inclusive OR NOT

Specification: orn_bitwise, orn_bitwise_32

### TST (shifted register). Test bits

Specification: tst_bitwise, tst_bitwise_32

+In total:+ 20.

h3. Move (register)

###  MOV (register). Move register

Specification: mov_reg, mov_reg_32

### MOV (to/from SP). Move register to SP or move SP to register

Specification: mov_sp, mov_sp_32

+In total:+ 4.

h3. Multiply and divide

###  MADD. Multiply-add

Specification: madd, madd_32

###  MSUB. Multiply-subtract

Specification: msub, msub_32

###  MNEG. Multiply-negate

Specification: mneg, mneg_32

###  MUL. Multiply

Specification: mul, mul_32

###  SMADDL. Signed multiply-add long

Specification: smaddl

###  SMSUBL. Signed multiply-subtract long

Specification: smsubl

###  SMNEGL. Signed multiply-negate long

Specification: smnegl

###  SMULL. Signed multiply long

Specification: smull

###  SMULH. Signed multiply high

Specification: smulh

###  UMADDL. Unsigned multiply-add long

Specification: umaddl

###  UMSUBL. Unsigned multiply-subtract long

Specification: umsubl

###  UMNEGL. Unsigned multiply-negate long

Specification: umnegl

###  UMULL. Unsigned multiply long

Specification: umull

###  UMULH. Unsigned multiply high

Specification: umulh

+In total:+ 18.

h3. Divide

###  SDIV. Signed divide

Specification: sdiv, sdiv_32

###  UDIV. Unsigned divide

Specification: udiv, udiv_32

+In total:+ 4.

h2. Branches, Exception generation, and System instructions

h3. Conditional Branch

###  B.cond. Branch conditionally

Specification: b

### CBNZ. Compare and branch if nonzero

Specification: cbnz, cbnz_32

### CBZ. Compare and branch if zero

Specification: cbz, cbz_32

### TBNZ. Test bit and branch if nonzero

Specification: tbnz

### TBZ. Test bit and branch if zero

Specification: tbz

+In total:+ 7.

h3. Unconditional branch (immediate)

### B. Branch unconditionally

Specification: b_imm

### BL. Branch with link

Specification: bl

+In total:+ 2.

h3. Unconditional branch (register)

### BLR. Branch with link to register

Specification: blr

### BR. Branch to register

Specification: br

### RET. Return from subroutine

Specification: ret

+In total:+ 3.

h3. Exception generation and return

*Exception generation*

### BRK. Breakpoint Instruction

Specification: brk

### HLT. Halt Instruction HLT

Specification: hlt

### HVC. Generate exception targeting Exception level 2 HVC

Specification: hvc

### SMC. Generate exception targeting Exception level 3 SMC

Specification: smc

### SVC. Generate exception targeting Exception level 1

Specification: svc

+In total:+ 5.

*Exception return*

### ERET. Exception return using current ELR and SPSR

Specification: eret

+In total:+ 1.

*Debug state*

### DCPS1. Debug switch to Exception level 1 DCPS1

Specification: dcps1

### DCPS2. Debug switch to Exception level 2 DCPS2

Specification: dcps2

### DCPS3. Debug switch to Exception level 3 DCPS3

Specification: dcps3

### DRPS. Debug restore PE state

Specification: drps

+In total:+ 4.

h3. System register instructions

### MRS. Move System register to general-purpose register MRS

Specification: msr

### MSR. Move general-purpose register to System register MSR (register)

Specification: mrs

### MSR. Move immediate to PE state field MSR (immediate)

Specification: msr_dc, msr_ds, msr_ss, msr_uao

+In total:+ 6.

h3. System instructions

### SYS. System instruction

Specification: sys

### SYSL. System instruction with result

Specification: sysl

### IC. Instruction cache maintenance

Specification: ic, ic_reg

### DC. Data cache maintenance

Specification: dc

### AT. Address translation

Specification: at

### TLBI. TLB Invalidate

Specification: tlbi, tlbi_reg

+In total:+ 8.

h3. Hint instructions

### NOP. No operation

Specification: nop

### YIELD. Yield hint

Specification: yield_op

### WFE. Wait for event

Specification: wfe

### WFI. Wait for interrupt

Specification: wfi

### SEV. Send event

Specification: sev

### SEVL. Send event local

Specification: sevl

### HINT. Unallocated hint

Specification: hint

+In total:+ 7.

h3. Barriers and CLREX instructions

### CLREX. Clear Exclusives monitor

Specification: clrex

### DMB. Data memory barrier

Specification: dmb

### DSB. Data synchronization barrier

Specification: dsb

### ISB. Instruction synchronization barrier

Specification: isb

+In total:+ 4.

h2. Loads and stores

h3. Load/store register

### LDR. Load register (immediate offset)

Specification: ldr_postindex

### STR. Store register (immediate offset)

Specification: str_postindex

+In total:+ 2.

h3. Load-Exclusive/Store-Exclusive

### LDXR. Load Exclusive register

Specification: ldxr, ldxr_32

### LDXRB. Load Exclusive byte

Specification: ldxrb_32

### LDXRH. Load Exclusive halfword

Specification: ldxrh_32

### LDXP. Load Exclusive pair

Specification: ldxp, ldxp_32

### STXR. Store Exclusive register

Specification: stxr, stxr_32

### STXRB. Store Exclusive byte

Specification: stxrb_32

### STXRH. Store Exclusive halfword

Specification: stxrh_32

### STXP. Store Exclusive pair

Specification: stxp, stxp_32

+In total:+ 12.

h3. Load-Acquire/Store-Release

*Non-exclusive Load-Acquire and Store-Release instructions*

### LDAR. Load-Acquire Register

Specification: ldar, ldar_32

### LDARB. Load-Acquire Byte

Specification: ldarb

### LDARH. Load-Acquire Halfword

Specification: ldarh

### STLR. Store-Release Register

Specification: stlr, stlr_32

### STLRB. Store-Release Byte

Specification: stlrb

### STLRH. Store-Release Halfword

Specification: stlrh

+In total:+ 8.

*Exclusive Load-Acquire and Store-Release instructions*

### LDAXR. Load-Acquire Exclusive register

Specification: ldaxr, ldaxr_32

### LDAXRB. Load-Acquire Exclusive byte

Specification: ldaxrb_32

### LDAXRH. Load-Acquire Exclusive halfword

Specification: ldaxrh_32

### LDAXP. Load-Acquire Exclusive pair

Specification: ldaxp, ldaxp_32

### STLXR. Store-Release Exclusive register

Specification: stlxr, stlxr_32

### STLXRB. Store-Release Exclusive byte

Specification: stlxrb_32

### STLXRH. Store-Release Exclusive halfword

Specification: stlxrh_32

### STLXP. Store-Release Exclusive pair

Specification: stlxp, stlxp_32

+In total:+ 12.

h2. Pseudo instructions

psldr, psldr32

+In total:+ 2.