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Guide
Version: 2.1
September 23, 2024
This guide introduces the Arm architecture for anyone with an interest in it.
Learn the architecture
Other Arm architectures The Arm architecture is the best-known Arm specification, but it is not the only one. ... This diagram provides some examples: Figure 1.
Overview The Arm architecture provides the foundations for the design of a processor or core, things ... The Arm architecture is used in a range of technologies, integrated into System-on- ...
Related information Here are some resources related to material in this guide: Arm architecture reference manuals ... Other Arm architectures Generic Interrupt Controller (GIC)
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Architecture Document
Version: E.e
February 15, 2021
This manual documents the Microcontroller profile of version 7 of the ARM Architecture, the ARMv7-M architecture profile.
PDF - 5.7 MB
Armv7-M
Architecture Document
Version: 2024-12 - New
Last Tuesday
This document provides descriptions in HTML format for the A-profile system registers and memory-mapped registers.
Armv8-A
Armv9-A
Purpose ... IA, bits [31:0] ... opc1 CRn CRm opc2 0b1111 0b000 0b0111 0b1000 0b001 if !HaveAArch32EL(EL1) then UNDEFINED; elsif PSTATE.EL == EL0 then
ICIALLU: Instruction Cache Invalidate All to PoU ... ICIMVAU: Instruction Cache line Invalidate by VA to PoU ... TLBIIPAS2IS: TLB Invalidate by Intermediate Physical Address, Stage 2, Inner ...
opc1 CRn CRm opc2 0b1111 0b000 0b0111 0b1000 ... if !HaveAArch32EL(EL1) then UNDEFINED; elsif PSTATE.EL == EL0 then ... AArch32.TakeHypTrapException(0x03); else
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Architecture Document
Version: 2024-12 - New
Last Tuesday
This document provides descriptions in HTML format for the A-profile A64 Instruction Set Architecture.
Armv8-A
Armv9-A
Integer (FEAT_PAuth_LR) 31 30 29 28 27 26 25 24 23 22 ... 13 ... 5 4 3 2 ... 1 ... 0 ... Rn ... sf S opcode2 opcode Rd
1 ... Rm ... 0 Rn Rd op S ... Assembler Symbols ... <Wn> ... <Wm> ... <Xd> Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" ... <Xn>
8 7 6 5 4 3 2 ... sf ... 0 1 ... cc ... CBLO <Wm>, <Wt>, <label> ... Applies when (sf == 1) ... is equivalent to CBHI <Xt>, <Xm>, <label> Assembler Symbols
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Architecture Document
Version: 2024-12 - New
Last Tuesday
This document provides descriptions in HTML format for the A-profile A32 and T32 Instruction Set Architecture.
Armv8-A
Armv9-A
0 Rn Rd ... 1 Rm cond Encoding for the A1 variant ... Decode for this encoding ... T1 15 14 13 12 11 10 9 8 7 6 5 4 3
4 3 2 ... != 1111 ... 0 ... U ... 1 Rn Rt imm12 cond Encoding for the A1 variant ... NOP. ... The instruction is UNDEFINED. The instruction executes as
If EL2 is using AArch32, the PE enters Hyp mode and ELR_hyp, HSR, SPSR_hyp, DLR and ... UNKNOWN. ... T1 15 14 13 12 ... 9 8 7 6 5 4 3 2 ... 0 ... 1
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Architecture Document
Version: 2024-09
September 30, 2024
This document provides descriptions in HTML format for the A-profile A32 and T32 Instruction Set Architecture.
Armv8-A
Armv9-A
U ... imm12 ... The following constraints also apply to this encoding: cond != 1111 && cond != 1111 Decode fields Instruction Details P:W o2 o1 Rn != 01 0 1
Rd ... stype ... cond Flag setting (S == 1) BICS{<c>}{<q>} {<Rd>,} <Rn>, <Rm>, <shift> <Rs> Not flag setting (S == 0) BIC{<c>}{<q>} {<Rd>,} <Rn>, <Rm>, <shift> <Rs> ... 00
See ... 24 ... 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ... != 1111 ... 0 ... imm12 cond ... ANDS{<c>}{<q>} {<Rd>,} <Rn>, #<const> ... T1 15
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Architecture Document
Version: 2024-09
September 30, 2024
This document provides descriptions in HTML format for the A-profile A64 Instruction Set Architecture.
Armv8-A
Armv9-A
2 ... 0 ... 1 ... N immr imms Rn Rd opc 32-bit (sf == 0 && N == 0) ... and is the preferred disassembly when UInt(imms) >= UInt(immr). ... <Wd> ... <Wn> ... <width>
Integer ... 31 30 29 28 27 26 ... 7 6 5 4 3 2 ... 1 ... 0 ... Rd sf S opcode2 ... AUTDA <Xd>, <Xn|SP> AUTDZA (Z == 1 && Rn == 11111)
21 ... 7 6 5 4 3 2 1 0 ... imm26 op BL <label> constant bits(64) offset = SignExtend(imm26:'00', 64); constant integer d = 30; Assembler Symbols
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Architecture Document
Version: 2024-09
September 30, 2024
This document provides descriptions in HTML format for the A-profile system registers and memory-mapped registers.
Armv8-A
Armv9-A
coproc opc1 CRn CRm opc2 0b1111 0b000 0b1000 0b0011 0b111 ... AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HSTR. ...
0b001 ... UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && ! ... R[t] = AMAIR1; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && ELUsingAArch32(EL3) then R[t] = AMAIR1_NS; else
coproc opc1 CRn CRm opc2 0b1111 0b100 0b1000 0b0111 0b001 if !HaveAArch32EL(EL2) then UNDEFINED; elsif PSTATE.EL == EL0 then ... HaveEL(EL2) then
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Technical Reference Manual
Version: r0p1 - New
Last Monday
This Technical Reference Manual is written for system designers, system integrators, and programmers who are designing or programming a System-on-Chip (SoC) that uses the Arm Neoverse MMU-720AE System Memory Management Unit.
Fault detection and control mechanisms MMU-720AE provides several Functional Safety (FuSa) features to detect random ... For example: We apply protection to several interfaces within
Configuration parameters and methodology The TBU, TCU, and BAS components in MMU-720AE are delivered as SystemVerilog that you ... Use the Generate script to configure these components.
Error reporting MMU-720AE contains a Fault Management Unit (FMU) that records and controls the reporting of faults in both ... The error reporting implements the following functionality:
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Technical Reference Manual
Version: r0p1
October 25, 2024
This manual is for the Cortex -R82AE processor. It provides reference information and contains programming details for registers. It also describes the memory system, the interrupts, the debug features, and other key features of the processor.
Cortex-R82AE
Implemented and enabled. ... xx [3:2] NSNID ... Non-secure state is not implemented. All other values are reserved. 0b00 [1:0] NSID Non-secure invasive debug.
If RXfull is set to 0, return an UNKNOWN value. After the read, RXfull is cleared to 0. 32{x} Access MRS <Xt>, DBGDTR_EL0 op0 op1 CRn CRm op2 0b10
AArch64 Debug register description This section includes the register descriptions for all Debug registers in the Cortex®-R82AE processor.
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