[RTEMS Project] #4689: mips/jmr3904 Massive Number of Test Failures

[RTEMS trac]

#4689: mips/jmr3904 Massive Number of Test Failures
---------------------------+---------------------
 Reporter:  Joel Sherrill  |       Owner:  (none)
     Type:  defect         |      Status:  new
 Priority:  normal         |   Milestone:  6.1
Component:  arch/mips      |     Version:  6
 Severity:  normal         |  Resolution:
 Keywords:                 |  Blocked By:
 Blocking:                 |
---------------------------+---------------------

Comment (by Sebastian Huber):

 This looks like a GDB or other tool issue. Maybe a sign extension bug:

 {{{
 objdump -h build/mips/jmr3904/testsuites/samples/ticker.exe

 build/mips/jmr3904/testsuites/samples/ticker.exe:     file format
 elf32-tradbigmips

 Sections:
 Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         000115a0  88000000  88000000  00001000  2**4
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   1 .rtemsroset   00000070  880115a0  880115a0  000125a0  2**2
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
   2 .init         00000048  88011610  88011610  00012610  2**0
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   3 .fini         00000030  88011658  88011658  00012658  2**0
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   4 .ctors        00000008  88011688  88011688  00012688  2**2
                   CONTENTS, ALLOC, LOAD, DATA
   5 .dtors        00000008  88011690  88011690  00012690  2**2
                   CONTENTS, ALLOC, LOAD, DATA
   6 .rdata        00002030  880116a0  880116a0  000126a0  2**4
                   CONTENTS, ALLOC, LOAD, READONLY, DATA
   7 .MIPS.abiflags 00000018  880136d0  880136d0  000146d0  2**3
                   CONTENTS, ALLOC, LOAD, READONLY, DATA,
 LINK_ONCE_SAME_SIZE
   8 .data         000005c0  880136e8  880136e8  000146e8  2**3
                   CONTENTS, ALLOC, LOAD, DATA
   9 .bss          00001410  88013cb0  88013cb0  00014ca8  2**4
                   ALLOC
  10 .noinit       00001310  880150c0  880150c0  00014ca8  2**3
                   ALLOC
  11 .rtemsstack   00004000  880163d0  880163d0  00014ca8  2**4
                   ALLOC
  12 .debug_aranges 00002958  00000000  00000000  00014ca8  2**3
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  13 .debug_info   00109cb1  00000000  00000000  00017600  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  14 .debug_abbrev 00023397  00000000  00000000  001212b1  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  15 .debug_line   0003dc56  00000000  00000000  00144648  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  16 .debug_frame  000048f4  00000000  00000000  001822a0  2**2
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  17 .debug_str    0001160c  00000000  00000000  00186b94  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  18 .gnu.attributes 00000010  00000000  00000000  001981a0  2**0
                   CONTENTS, READONLY
  19 .comment      00000063  00000000  00000000  001981b0  2**0
                   CONTENTS, READONLY
  20 .debug_line_str 000001be  00000000  00000000  00198213  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  21 .debug_loclists 00022d89  00000000  00000000  001983d1  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
  22 .debug_rnglists 0000605d  00000000  00000000  001bb15a  2**0
                   CONTENTS, READONLY, DEBUGGING, OCTETS
 ~/src/rtems (master) > /opt/rtems/6/bin/mipstx39-rtems6-gdb
 build/mips/jmr3904/testsuites/samples/ticker.exe
 GNU gdb (GDB) 11.2
 Copyright (C) 2022 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later
 <http://gnu.org/licenses/gpl.html>
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 Type "show copying" and "show warranty" for details.
 This GDB was configured as "--host=x86_64-linux-gnu
 --target=mipstx39-rtems6".
 Type "show configuration" for configuration details.
 For bug reporting instructions, please see:
 <https://www.gnu.org/software/gdb/bugs/>.
 Find the GDB manual and other documentation resources online at:
     <http://www.gnu.org/software/gdb/documentation/>.

 For help, type "help".
 Type "apropos word" to search for commands related to "word"...
 Reading symbols from build/mips/jmr3904/testsuites/samples/ticker.exe...
 (gdb) tar sim
 Connected to the simulator.
 (gdb) load
 Loading section .text, size 0x115a0 lma ffffffff88000000
 Loading section .rtemsroset, size 0x70 lma ffffffff880115a0
 Loading section .init, size 0x48 lma ffffffff88011610
 Loading section .fini, size 0x30 lma ffffffff88011658
 Loading section .ctors, size 0x8 lma ffffffff88011688
 Loading section .dtors, size 0x8 lma ffffffff88011690
 Loading section .rdata, size 0x2030 lma ffffffff880116a0
 Loading section .MIPS.abiflags, size 0x18 lma ffffffff880136d0
 Loading section .data, size 0x5c0 lma ffffffff880136e8
 Start address ffffffff88000004
 Transfer rate: 648448 bits in <1 sec.
 (gdb) r
 Starting program:
 /tmp/sh/b-rtems/mips/jmr3904/testsuites/samples/ticker.exe
 mips-core: 4 byte read to unmapped address 0xffffffff88000004 at
 0xffffffff88000004

 Program received signal SIGBUS, Bus error.
 _start () at
 /home/EB/sebastian_h/src/rtems/bsps/mips/jmr3904/start/start.S:57
 57              bal     $LF1
 }}}

--
Ticket URL: <http://devel.rtems.org/ticket/4689#comment:3>
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