![[RTEMS Logo]](/images/logo.png){kind=logo}
Opened on 03/28/19 at 14:54:16
Last modified on 02/09/21 at 23:22:49
#3727 new defect
RTEMS 5 raises exception on mvme2100 VME CPU board (PowerPC)
| Reported by: | Goetz Pfeiffer | Owned by: | |
|---|---|---|---|
| Priority: | high | Milestone: | |
| Component: | arch/powerpc | Version: | 5 |
| Severity: | blocker | Keywords: | PowerPC mvme2100 exception |
| Cc: | Blocked By: | ||
| Blocking: |
Description
Hello,
version 5 of RTEMS crashes on a mvme2100 CPU board.
Here are details of the RTEMS version:
repository : git://git.rtems.org/rtems.git branch : master version : cbfc3415607a6943823e8fc47c38408dcc7dbd90 last commit : Thu Mar 14 08:20:54 2019 +0100
build commands:
./bootstrap mkdir -p build cd build ../configure --target=powerpc-rtems5 --enable-tests --enable-rtemsbsp="mvme2100 beatnik" --prefix /home/pfeiffer/rtems/rtems/5 make -sj make install
Booted File:
build/powerpc-rtems5/c/mvme2100/testsuites/libtests/dl10.exe
Boot Messages:
PPC5-Bug>nab NetBoot about to Begin... Press <ESC> to Bypass, <SPC> to Continue Network Booting from: DEC21143, Controller 0, Device 0 Device Name: /pci@fec00000/pci1011,19@e,0:0,0 Loading: /opt/IOC/idcp/dl10.exe Client IP Address = 193.149.12.202 Server IP Address = 193.149.12.6 Gateway IP Address = 193.149.12.1 Subnet IP Address Mask = 255.255.255.0 Boot File Name = /opt/IOC/idcp/dl10.exe Argument File Name = Network Boot File load in progress... To abort hit <BREAK> Bytes Received =&8812400, Bytes Loaded =&8812400 Bytes/Second =&734366, Elapsed Time =12 Second(s) Residual-Data Located at: $01F5511C Exception: Program (Illegal Instruction) SRR0 =00005000 SRR1 =00083040 Vector-Offset =00700 IP =00005000 MSR =00003040 CR =00000000 FPSCR =00000000 R0 =00000000 R1 =01F00000 R2 =00000000 R3 =01F5511C R4 =00005000 R5 =00000000 R6 =00000000 R7 =00000000 R8 =00000000 R9 =00000000 R10 =00000000 R11 =00000000 R12 =00000000 R13 =00000000 R14 =00000000 R15 =00000000 R16 =00000000 R17 =00000000 R18 =00000000 R19 =00000000 R20 =00000000 R21 =00000000 R22 =00000000 R23 =00000000 R24 =00000000 R25 =00000000 R26 =00000000 R27 =00000000 R28 =00000000 R29 =00000000 R30 =00000000 R31 =00000000 SPR0 =9BBF322F SPR1 =00000000 SPR8 =00000000 SPR9 =00000000 00005000 7F454C46 WORD $7F454C46 PPC5-Bug>
I have seen that dl10.exe compiled for the "beatnik" board support does not crash on a mvme5500 CPU board.
Change History (11)
comment:1 Changed on 03/28/19 at 14:58:42 by Goetz Pfeiffer
comment:2 Changed on 03/29/19 at 12:32:48 by Goetz Pfeiffer
It seems that *.exe files cannot be loaded from the mvme2100 CPU anyway, but
*.ralf files do.
So, in order to reproduce the bug you have to check out examples-v2 (https://git.rtems.org/examples-v2), build it and load "both_hello.ralf".
On the mvme2100 cpu this still gives an exception.
The command
hexdump both_hello.ralf | less
shows that the file starts with ".ELF" in ASCII representation, so it is an probably an ELF file. This is probably not the format the CPU bootloader can load.
I verified that for the "beatnik" board support, the file "both_hello.ralf" does not start with ".ELF", and there the hello world example works.
comment:3 follow-up: 4 Changed on 03/29/19 at 13:22:00 by Joel Sherrill
The transformation step on linked executables (.exe) to downloadable images (.ralf) was dropped from the build system between 4.11 and 5. This is now something that should be done manually.
Specifically the bsp-post-link step is no longer performed. For BSPs that had one, the bsp-post-link definition is still present but not used in the RTEMS build tree. I am unsure offhand it if is used when building applications against the installed RTEMS image like the examples-v2 do with the rtems_waf build system (assuming waf is what you used there)
https://git.rtems.org/rtems/tree/bsps/powerpc/motorola_powerpc/config/mvme2100.cfg
I think this may be what you are seeing.
comment:4 Changed on 03/29/19 at 22:33:47 by Chris Johns
Replying to Joel Sherrill:
I am unsure offhand it if is used when building applications against the installed RTEMS image like the examples-v2 do with the rtems_waf build system (assuming waf is what you used there)
It will depend on the build system used to build examples-v2. The 4.10 would be Makefile.inc based and if the internal change to drop the post link conversion is exposed to the make build of examples-v2 it would also be dropped. The waf build does not support any post link conversions because there is no clean way this information could be captured. The work to add this type of support in a uniform way is complex and large given the number of BSPs we have.
comment:5 Changed on 05/27/19 at 08:25:57 by Sebastian Huber <sebastian.huber@…>
In [changeset:"f419349a1370ffed9cb3d2322d01e801e012134e/rtems" f419349/rtems]:
comment:6 Changed on 05/27/19 at 08:38:09 by Sebastian Huber <sebastian.huber@…>
In [changeset:"a00052a341010ac7cf688e6366d7a3a96b48926f/rtems-docs" a00052a/rtems-docs]:
comment:7 Changed on 06/27/19 at 12:39:56 by Sebastian Huber <sebastian.huber@…>
In [changeset:"9b858ee6ef0805fc0671ed226d66295395d26cbc/rtems" 9b858ee/rtems]:
comment:8 Changed on 02/07/21 at 22:09:14 by Chris Johns
Is the issue in this ticket fixed? Can the ticket be closed?
comment:9 follow-up: 10 Changed on 02/08/21 at 04:48:35 by Joel Sherrill
If this runs on the board you have access to, close it.
comment:10 Changed on 02/09/21 at 22:36:53 by Chris Johns
Replying to Joel Sherrill:
If this runs on the board you have access to, close it.
Who is this too?
If me, I do not have a mvme2100. The defines in the code means the mvme2100 is built differently to the mvme2[67]00.
comment:11 Changed on 02/09/21 at 23:22:49 by Joel Sherrill
It was to you Chris. Ask on the list for someone with an MVME2100 to test with. I don't remember who Richard added mvme2100 support for. I might be able to dig it up. But we need a tester. Otherwise, we just may have to close this.
An exception also occurs when I build the examples-v2 project and load
The exceprion with "hello.ralf" does not occur when I use branch "examples-v2-4-10-branch" of examples-v2 and RTEMS 4.10.