RH850F1L用户手册：软件

官方原版资料 RH850 Family 32 User’s Manual: Software Renesas microcontroller RH850 Family CHAPTER 1 OVERVIEW ...............................................................................................................1 1.1 V850E3v5 Architecture Features ...........................................................................................1 1.1.1 Multi-processing environment .....................................................................................2 1.1.2 Virtual machines...........................................................................................................2 1.1.3 Hardware multithreading..............................................................................................2 1.2 V850E3v5 Architecture Class ................................................................................................3 1.3 Changes from the V850E2v3 Architecture ............................................................................4 CHAPTER 2 PROCESSOR MODEL ................................................................................................5 2.1 Resource Management ...........................................................................................................5 (1) 3-layer control system..................................................................................................6 (2) 2-layer control system..................................................................................................7 2.2 CPU Operating Modes............................................................................................................8 2.2.1 Definition of CPU operating modes.............................................................................9 (1) Native mode (NM).......................................................................................................9 (2) Virtual machine mode (VM) .......................................................................................9 (3) Supervisor mode (SV) .................................................................................................9 (4) User mode (UM)..........................................................................................................9 2.2.2 CPU operating mode transition .................................................................................... 10 (1) Change due to acknowledging an exception ...............................................................10 (2) Change due to a return instruction...............................................................................10 (3) Change due to a system register instruction................................................................10 2.2.3 CPU operating modes and privileges...........................................................................11 (1) Hypervisor privilege (HV privilege) ...........................................................................12 (2) Supervisor privilege (SV privilege).............................................................................12 (3) Coprocessor use permissions.......................................................................................12 (4) Operation when there is a privilege violation .............................................................13 2.3 Hardware Thread ....................................................................................................................14 2.3.1 Thread status.................................................................................................................14 (1) Enabled/disabled..........................................................................................................14 (2) Stopped/running...........................................................................................................14 2.3.2 Stopping a thread by executing the HALT instruction ................................................15 2.3.3 Pausing a thread by executing the SNOOZE instruction.............................................15 2.4 Instruction Execution..............................................................................................................16 2.5 Exceptions and Interrupts .......................................................................................................17 2.5.1 Types of exceptions......................................................................................................17 (1) Terminating exceptions ...............................................................................................17 (2) Resumable exceptions .................................................................................................17 (3) Pending exceptions ......................................................................................................17 2.5.2 Exception level ................................................................................................................18 2.6 Coprocessors..............................................................................................................................18 2.6.1 Coprocessor use permissions...........................................................................................18 2.6.2 Correspondences between coprocessor use permissions and coprocessors ...................19 2.6.3 Coprocessor unusable exceptions....................................................................................19 2.6.4 System registers...............................................................................................................19 2.7 Registers.....................................................................................................................................20 2.7.1 Program registers.............................................................................................................20 2.7.2 System registers...............................................................................................................20 2.7.3 Register updating.............................................................................................................22 (1) LDSR and STSR..........................................................................................................22 (2) LDTC and STTC .........................................................................................................25