Arm Error 65
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30 Days In the Last 90 Days In the Last 6 Months Home/Discussion Forum error 65 Next Thread | Thread List | Previous Thread keil error 65 no execute read permission Start a Thread | Settings Details Message Read-Only AuthorSendhilraj Thangaraj Posted25-Oct-2005 10:12
* * * Error 65 Access Violation At 0x40023800 No Read Permission
GMT ToolsetARM error 65 Sendhilraj Thangaraj Hello all I tried to run the simple ARM assembly program.Thers no error and error 65: access violation at 0xfffffff4 : no 'write' permission warming when I am building the program But When I debug and run the program I am getting the error below *** error 65: access violation at 0x00000000 : no 'execute/read' how to fix access violation at address permission I can see in the disassembly window that my rpogram is getting stored from location 0x00000010.The location 0x00000000 to 0x0000000c doesnt have my code....I would like to know the reason why my program is geeting stored at 0x00000010 instead of 0x00000000 ? the code is AREA my_code, CODE,Readonly Entry mov r0,#0xFF mov r2,#0x34 End . looking forward for ur help Read-Only AuthorMatthias Hertel
Error 651
Posted25-Oct-2005 14:48 GMT ToolsetARM RE: error 65 Matthias Hertel Which controller have you chosen in your project/ the simulation? Read-Only AuthorSendhilraj Thangaraj Posted26-Oct-2005 05:11 GMT ToolsetARM RE: error 65 Sendhilraj Thangaraj Philips LPC 2292 is the one that i am choosing Read-Only AuthorReinhard Keil Posted26-Oct-2005 10:20 GMT ToolsetARM RE: error 65 Reinhard Keil Basically you need to set the execution attribute using the MAP command. See: http://www.keil.com/support/docs/3102.htm http://www.keil.com/support/docs/814.htm Reinhard Read-Only AuthorSendhilraj Thangaraj Posted26-Oct-2005 13:12 GMT ToolsetARM RE: error 65 Sendhilraj Thangaraj Thanks a lot and it is working fine now Next Thread | Thread List | Previous Thread Start a Thread | Settings Products Development Tools ARM C166 C51 C251 µVision IDE and Debugger Hardware & Collateral ULINK Debug Adaptors Evaluation Boards Product Brochures Device Database Distributors Downloads MDK-ARM C51 C166 C251 File downloads Support Knowledgebase Discussion Forum Product Manuals Application Notes Contact Distributors Request a Quote Sales Contacts Cookie Settings | Terms of Use | Privacy | Accessibility | Contact Us | Feedback Copyright © 2005-2016 ARM Group. All rights reserved. Important information This site uses cookies to store information on your computer. By continuing to use
30 Days In the Last 90 Days In the Last 6 Months Technical Support Overview Search Contact Assistance Request Feedback Support Resources Support Knowledgebase Article Index Top 10 Articles Product Manuals Application Notes Downloads Product Updates Discussion Forum Books Product Information Software & Hardware Products ARM Development ToolsC166 Development ToolsC51 Development ToolsC251 Development ToolsDebug AdaptersEvaluation Boards Product Brochures Newsletters Home/Technical Support µVISION DEBUGGER: ERROR 65 WHEN USING MEMMAP ON PHILIPS LPC2000 Information in this article applies to: µVision Version 3.20 or later QUESTION I have copied the interrupt vectors into RAM (to allow the implementation of a bootstrap loader) using the following code lines: unsigned char http://www.keil.com/forum/6699/error-65 vectors[32] __at 0x40000000; // reserve space for IRQ vectors void copy_vectors (void) { memcpy (vectors, 0, 32); // copy original IRQ vectors to RAM MEMMAP = 2; // fetch vectors from RAM } When I run this program in the simulator I am getting *** error 65: access violation at 0x00000018 : no 'execute/read' permission On real hardware my program seems to work. How can I test the program in the simulator? ANSWER You http://www.keil.com/support/docs/3140.htm need to specify the memory mapping attributes for the RAM using the MAP command. It is required that the address space 0x40000000 - 0x4000003F allows code execution. You may put the required MAP commands into a debugger INI file that can be entered under Project — Options for Target — Debug — Initialization file. The content of such a file may be for example: MAP 0x40000000, 0x4000003F READ WRITE EXEC // allow code execution for interrupt vector fetch MORE INFORMATION Refer to MAP in the µVision3 User's Guide. SEE ALSO µVision DEBUGGER: ERROR 65 (ACCESS VIOLATION) Last Reviewed: Wednesday, January 10, 2007 Did this article provide the answer you needed? Yes No Not Sure Products Development Tools ARM C166 C51 C251 µVision IDE and Debugger Hardware & Collateral ULINK Debug Adaptors Evaluation Boards Product Brochures Device Database Distributors Downloads MDK-ARM C51 C166 C251 File downloads Support Knowledgebase Discussion Forum Product Manuals Application Notes Contact Distributors Request a Quote Sales Contacts Cookie Settings | Terms of Use | Privacy | Accessibility | Contact Us | Feedback Copyright © 2005-2016 ARM Group. All rights reserved. Important information This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies. Don't show this message again Change Settings Privacy
an STR7xx device. When I start the simulator, I have the following memory http://infocenter.arm.com/help/topic/com.arm.doc.faqs/ka11181.html map: MAP 0x00000000 - 0x0003FFFF exec read 0x20000000 - 0x2000FFFF read write : : During run-time, I copy program code into the RAM anduse http://embdsysdev.blogspot.com/2015/08/arm-development-error-65-access.html the PCU_BOOTCR register to remap the RAM on the fly to address space 0 using the instruction: PCU->BOOTCR |= 2 Everything works just fine, error 65 however the memory map for address region is now: MAP 0x00000000 - 0x0000FFFF read write // this should be executable!! 0x20000000 - 0x2000FFFF read write : : When there is an interrupt in my program, the simulator reacts correctly with: *** error 65: access violation at 0x00000008 : no access violation at 'execute/read' permission This is the correct behavior according to the memory map, but prevents correct code execution. Is there a solution to my problem? ANSWER When you REMAP the RAM to the memory region 0, the mapping attributes are taken from the original RAM region. Change the mapping for the RAM region using the MAP command as shown below: MAP 0x20000000, 0x2000003F read write exec This also changes the mapping for region 0 once you have remapped the RAM. MORE INFORMATION UVISION DEBUGGER: ERROR 65 (ACCESS VIOLATION) UVISION DEBUGGER: BREAKPOINTS IN MEMORY REGIONS Article last edited on: 2007-01-11 09:05:40 Rate this article Disagree? Move your mouse over the bar and click Did you find this article helpful? Yes No How can we improve this article? Submit Rating and Feedback Link to this article Copyright © 2011 ARM Limited. All rights reserved. External (Open), Non-Confidential Home
error is the most common issue... Its very easy to handle and it is fixable.. but you have to do it every time you start running the code in the keil simulator... Before I recommend to view this page from ARM, you will get a basic idea what was that all about: http://www.keil.com/support/docs/814.htm So after reading this we know where the device MAP is but the question is what range of addresses I need to map: Fro this we look at the error generated: error 65: access violation at 0x40023800 Understanding the error: From the documentation, form keil we understand that the address location pointed by the pointer in the RTOS, 0x40023800, is not available or the simulator cannot find the location. So it cannot perform read, write or execute anything at that location. Resolve: So now we try to map therangeof addresses that the simulator want toaccess. For that, we see the error code and look for the address which is: 0x40023800. Lets say we let it use thememory from 0x400000000 to0x40FFFFFF, so that the location that the processor is trying to use is still in the range. So we go to the Debug-> Memory MAP in the map range : 0x400000000,0x40FFFFFF add these and select : read, write, execute. and press run.. Posted by Chaitanya Varma D at 11:04 AM Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest Labels: *** error 65: access violation at 0x40023800 : no 'read' permission, arm, error, memory map. Location: Moline, IL, USA No comments: Post a Comment Newer Post Home Subscribe to: Post Comments (Atom) About Me Chaitanya Varma D View my complete profile Blog Archive ▼ 2015 (4) ► October (1) ▼ August (3) Simple explanation of linked list Efficient stack implementation with pointers ARM Development:: *** error 65: access violation... Awesome Inc. template. Powered by Blogger.