id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
229	test_cpu test number 51 (sreg_no_write.alm) faults while loading an unset pointer	Gary Dixon	Eric Swenson	"test_cpu.pl1 invokes external subroutines to perform specific CPU tests on specific CPUs.  One of those tests (test 51: sreg_no_write) can fail with the following symptoms:


{{{
Test 51   <sreg_no_write>
test_cpu: Test sreg_no_write encountered an unexpected fault_tag_1.
                              *** HARDWARE FAILING ***
          The function under test does not normally exhibit this failure.

MACHINE CONDITIONS AT 234|6600:

fault_tag_1 by sreg_no_write$|1774
(>system_library_tools>bound_cpu_tests_|105004)
referencing stack_4|40040 (in process dir)
Ascii data where pointer expected.
  Cannot get line number in sreg_no_write
105004   600024351520     epp1    pr6|24,*

Machine registers at time of fault

pr0 (ap)  234|4376            stack_4|4376
pr1 (ab)  234|6720            stack_4|6720
pr2 (bp)  234|6400            stack_4|6400
pr3 (bb)  234|6440            stack_4|6440  ( -> ""tempseg_1               "")
pr4 (lp)  247|24204           !BBBKQGCLpbbKFd.area.linker|24204  (internal static|0 for ci_mod_case_2)
pr5 (lb)  247|24204           !BBBKQGCLpbbKFd.area.linker|24204  (internal static|0 for ci_mod_case_2)
pr6 (sp)  234|6320            stack_4|6320
pr7 (sb)  234|0               stack_4|0

x0  37324   x1   4376   x2   3320   x3   3164
x4      0   x5   3357   x6     10   x7      1
a 000404000004  q 107006000000  e 0
Timer reg - 117701, Ring alarm reg - 0

SCU Data:

  6630    400404250011 000000000007 400234000000 000000000000
          105004102200 040040000000 040040351440 200036251500

Fault Tag 1 Fault ( 7)
By: 404|105004 sreg_no_write|1774  (bound_cpu_tests_|105004)
Referencing: 234|40040 stack_4|40040  ( -> ""                                                     "")
On: cpu a (#0)
Indicators:  cary, tro, ^bar
APU Status:  xsf, sd-on, pt-on, fabs
Instructions:
  6636    040040 3514 40      epp1      40040,f
  6637   2 00036 2515 00      spri1     pr2|36

Time stored: 07/21/21  1403.8 pdt Wed (154100507643061131)
Ring:          4

EIS Pointers and Lengths:

  6650    000400000101 000000000000 000000000000 000000000000
          000000000000 000000000000 000000000000 000000000000

CPU HISTORY REGISTERS AT TIME OF FAULT
DPS8 History Register Analysis

HR           IC or            c   Memory
id   Seg# [tpr.ca] opcode tag y  Address mc flags

CU                   scpr  n* ?   236204  0 inh its
CU                         n* ?   236204  0 inh its
CU                         n* ?   236260  0 inh its
CU                  cmpx3  du d        0  0 inh
CU                    tze     *        0  0 inh
CU                   eax3  x3 ?        3  0 inh
CU                    xec     ?   127155  0 inh its
CU                   scpr  n* ?   236204  0 inh its
CU                         n* ?   236204  0 inh its
CU                         n* ?   236204  0 inh its
CU                         n* ?   236260  0 inh its
CU                  cmpx3  du d        0  0 inh
CU                    tze     *        0  0 inh
CU                   eax3  x3 ?        3  0 inh
CU                    xec     ?   127155  0 inh its
CU                   scpr  n* ?   236204  0 inh its
}}}

This failure occurs in the test routine's module: sreg_no_write.alm."	defect	closed	major	MR12.8	Documentation		fixed