Hi, On Mon Aug 03, 2015 at 12:33:05 +0530, Raja Sekhar wrote:

I'm getting unhandled exception while running clntsrv example

I've build Fiasco-L4Re system with the following specifications *Fiasco.OC:* Architecture (ARM processor family) Platform (ARM RealView Platform) Realview Platform (PBX) Start of RAM (physical address) (0x00000000) CPU (ARM Cortex-A9 CPU) *L4Re:* Target Architecture (ARM architecture) CPU variant (ARMv4 type CPU)

Could you switch to ARMv7 here as this is the corresponding version for a Cortex-A9.

Platform Selection (ARM Realview PBX)

and *trying to run examples/clntsrv* by adding the following entry in module.list

entry clntsrv bootstrap bootstrap -serial kernel fiasco -serial_esc roottask moe rom/clntsrv.cfg module clntsrv.cfg module l4re module ned module ex_clntsrv-server module ex_clntsrv-client

Creating image:

make elfimage E=clntsrv MODULE_SEARCH_PATH=`pwd`/../Fiasco.OC:`pwd`/source/pkg/examples/clntsrv

Running image on QEMU:

qemu-system-arm -M realview-pbx-a9 --kernel images/bootstrap_clntsrv -m 256M -serial /dev/pts/4

L4 Bootstrapper Build: #56 Thu Jul 30 23:21:33 IST 2015, 4.7.3 20130226 (prerelease) Scanning up to 256 MB RAM Memory size is 256MB (00000000 - 0fffffff) RAM: 0000000000000000 - 000000000fffffff: 262144kB Total RAM: 256MB mod07: 0113d000-011565bc: ex_clntsrv-client mod06: 01123000-0113c5c0: ex_clntsrv-server mod05: 010d0000-01122bf4: ned mod04: 010b6000-010cf49c: l4re mod03: 010b5000-010b52a6: clntsrv.cfg mod02: 01083000-010b4668: moe mod01: 01079000-01082380: sigma0 mod00: 01015000-01078770: fiasco Moving up to 8 modules behind 1100000 moving module 00 { 1015000-107876f } -> { 1242000-12a576f } [407408] moving module 01 { 1079000-108237f } -> { 12a6000-12af37f } [37760] moving module 02 { 1083000-10b4667 } -> { 12b0000-12e1667 } [202344] moving module 03 { 10b5000-10b52a5 } -> { 1157000-11572a5 } [678] moving module 04 { 10b6000-10cf49b } -> { 1158000-117149b } [103580] moving module 05 { 10d0000-1122bf3 } -> { 1172000-11c4bf3 } [338932] moving module 06 { 1123000-113c5bf } -> { 1100000-11195bf } [103872] moving module 07 { 113d000-11565bb } -> { 111a000-11335bb } [103868] moving module 03 { 1157000-11572a5 } -> { 1134000-11342a5 } [678] moving module 04 { 1158000-117149b } -> { 1135000-114e49b } [103580] moving module 05 { 1172000-11c4bf3 } -> { 114f000-11a1bf3 } [338932] Scanning fiasco -serial_esc Scanning sigma0 Scanning moe rom/clntsrv.cfg Relocated mbi to [0x100e000-0x100e140] Loading fiasco Loading sigma0 Loading moe find kernel info page... found kernel info page at 0x2000 Regions of list 'regions' [ 1000, 1abf] { ac0} Kern fiasco [ 2000, 72fff] { 71000} Kern fiasco [ 90000, 9643b] { 643c} Sigma0 sigma0 [ 98000, 9e17b] { 617c} Sigma0 sigma0 [ 140000, 16becb] { 2becc} Root moe [ 170000, 186f0f] { 16f10} Root moe [ 1000000, 10143f7] { 143f8} Boot bootstrap [ 100e000, 100e23d] { 23e} Root Multiboot info [ 1100000, 11a1bf3] { a1bf4} Root Module API Version: (87) experimental Sigma0 config ip:00090100 sp:01013de4 Roottask config ip:001401fc sp:00000000 Starting kernel fiasco at 000012b4 Realview System ID: Rev=0 HBI=178 Build=0 Arch=5 FPGA=00 Hello from Startup::stage2 Per_cpu_data_alloc: (orig: 0xf00605e8-0xf0060f68) Number of IRQs available at this GIC: 96 Cache config: ON ID_PFR[01]: 00001031 00000001 ID_[DA]FR0: 00000000 00000000 ID_MMFR[04]: 00100103 20000000 01230000 00002111 L2: ID=410000c8 Type=1c100100 Aux=30520000 WMask=ff S=0 L2: Type L2C-310 Size = 128kB SERIAL ESC: allocated IRQ 44 for serial uart Not using serial hack in slow timer handler. Welcome to Fiasco.OC (arm)! L4/Fiasco.OC arm microkernel (C) 1998-2013 TU Dresden Rev: rexported compiled with gcc 4.7.3 for Realview [] Build: #4 Tue Jul 28 22:46:31 IST 2015

Per_cpu_data_alloc: (orig: 0xf00605e8-0xf0060f68) Allocate 2432 bytes (2KB) for CPU[4] local storage (offset=1187a18, 0xf11e8000-0xf11e8980) Number of CPUs: 1 Calibrating timer loop... done. SIGMA0: Hello! KIP @ 2000 allocated 4KB for maintenance structures SIGMA0: Dump of all resource maps RAM:------------------------ [0:0;fff] [0:73000;8ffff] [0:97000;97fff] [0:9f000;13ffff] [4:140000;16bfff] [0:16c000;16ffff] [4:170000;186fff] [0:187000;100dfff] [4:100e000;100efff] [0:100f000;10fffff] [4:1100000;11a1fff] [0:11a2000;effffff] IOMEM:---------------------- [0:10000000;ffffffff] MOE: Hello world MOE: found 244324 KByte free memory MOE: found RAM from 73000 to f000000 MOE: allocated 239 KByte for the page array @0x9f000 MOE: virtual user address space [0-bfffffff] MOE: rom name space cap -> [C:501000] BOOTFS: [1134000-11342a6] [C:503000] clntsrv.cfg BOOTFS: [1135000-114e49c] [C:504000] l4re BOOTFS: [114f000-11a1bf4] [C:505000] ned BOOTFS: [1100000-11195c0] [C:506000] ex_clntsrv-server BOOTFS: [111a000-11335bc] [C:507000] ex_clntsrv-client MOE: cmdline: moe rom/clntsrv.cfg MOE: Starting: rom/ned rom/clntsrv.cfg MOE: loading 'rom/ned' Ned says: Hi World! ****I am in luaK_prefix()**** L4Re: unhandled exception: pc=0x1021984

I have gone through the code flow for "ned" and I found that the exception is raising while loading ned.lua script, At certain point luaK_prefix() is trying to call codearith() but failed to call codearith(). both the function are located at l4re/pkg/lua/lib/contrib/src/lcode.c

I'm able to get print statement which I placed before calling the codearith() in luaK_prefix(), But not printing the statement which I placed inside the codearith()

Can you please get me out from this issue.

Please check whether this persists after recompiling for ARMv7. If not, I'd like to know which instruction/code is at 0x1021984. Adam -- Adam adam@os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/