- #Vxworks program exception current instruction address for mac
- #Vxworks program exception current instruction address software
- #Vxworks program exception current instruction address code
Srr1: Save and restore register 1 ( It contains exception specific information and some of MSR bits after an exception)ĭata Exception: Data exceptions are most common and relatively easy to debug and fix.Following section describes debugging a data exception in details.Example C Code for data exception:
Srr0: Save and restore register 0 ( It contains address of instruction which caused exception or the address of next instruction) Msr: Machine State register ( This is very useful when debugging exceptions as it contains exception information)ĭar: Data address register ( It has effective address accessed by memory access instruction)ĭsisr: Cause of DSI and alignment exception Lr: Link register ( It contains the return address)Ĭr0: Condition register( It has fields CR0 to CR7 which indicates results of integer and floating point instruction execution)Ĭtr: Count register ( Can have a loop count or target address for branch instruction) Xer: It is a fixed point exception register. It indicates carriers and overflows of an integer operation Return value from function is saved in r3.į0-f31: Floating point registers (Used by floating point instructions as source and destination)įpscr: Floating point control and status register (Contains status of floating point operation) R0-r31 : General purpose registers (Used for integer data manipulation).r1 is used as stack pointer as there is no dedicated stack pointer register.Function arguments are passed in general purpose registers starting r3. PowerPC Register Summary: Following registers are more relevant when it comes to exception debugging
#Vxworks program exception current instruction address software
Scm Group Xilog Plus - The software Xilog Plus from the SCM Group is used to manage the CNC-machining centres with numerical.In this post I will describe on debugging data exception on PowerPC. Share your experience: Write a review about this program Read more. Please visit the main page of Scm Group Xilog Plus on Software Informer. The software Xilog Plus from the SCM Group is used to manage the CNC-machining centres with numerical control.
R1 is stack pointer and value of r31 is saved at address 28 + address pointed by stack pointer. Explanation of assembly instruction: r31 is a non volatile register so any invoked function should first save it’s value on stack if this register will be used in function.See third instruction of function test_exception_task (stw r31,28(r1)) is saving r31 on stack which will restored back from stack when function returns. I would like to explain little bit on assembly code and some vxWorks APIs which are helpful when it come to exception debugging. As this example code is simple program and there is only one line of C code between printf it is easy to identify the code which has caused this exception. This helps in identifying small code section where we have to look to fix exception.
We can see the instruction pointed by EPC is some where between function call printf and taskDelay. Value = 0 = 0x0 -> ca_test program Exception current instruction address. EPICS CA package(R3-14) on VxWorks/PPC604 Experimental Physics and. When a function is invoked current stack pointer and return address are. PowerPC Program Exception Debugging on vxWorks. Vxworks Program Exception Current Instruction Address Format. As far as I am aware you cannot enter a text chat room and Audio chat with the people there 'en masse'.
#Vxworks program exception current instruction address for mac
Last time I Checked Yahoo for Mac allowed you to continuously broadcast a Video stream which you can allow Buddies to see. Re ds store's link Yahoo is about to be added to iChat 6 in Lion.
0 kommentar(er)
