On 02/12/16 11:10, Jiri Gaisler wrote:
On 01/12/16 17:43, Joel Sherrill wrote:
Hi
erc32 has a couple of test failures on master:
*** BEGIN OF TEST PSXSPIN 1 ***
pthread_spin_init( &spinlock, PTHREAD_PROCESS_PRIVATE ) -- OK
pthread_spin_destroy( &spinlock ) -- OK
pthread_spin_init( &spinlock, PTHREAD_PROCESS_SHARED ) -- OK
pthread_spin_destroy( &spinlock ) -- OK
pthread_spin_init( &spinlock, 0x1234 ) -- OK
pthread_spin_init( &spinlock2, 0 ) -- OK
pthread_spin_lock( &spinlock ) -- OK
Unexpected trap ( 9) at address 0x02008758
data access exception at 0x00000008
*** BEGIN OF TEST SPCONTEXT 1 ***
Test configuration N N N... done
Test configuration N N F...
../../../../../../../rtems/c/src/../../testsuites/sptests/spcontext01/init.c:
44 0
I have not had a chance to check other BSPs yet.
Thanks.
--joel
Could it be a gcc/binutils problem? Software trap 5 is called to set/get
the interrupt level of a spinlock, but RTEMS's sparc.h does not mention
this trap at all. In old SunOS, software trap 5 (0x85) was 'range
check', whatever that meant ...
No, this was a NULL pointer access:
https://git.rtems.org/rtems/commit/?id=aadd318cd92e42839cf86260e1085f2953113180
GCC generates a trap 5 instruction in case it detects certain kinds of
undefined behaviour, e.g.
void f(void)
{
int *i = 0;
*i = 0;
}
sparc-rtems4.12-gcc -S -O2 -o - test.c
.file "test.c"
.section ".text"
.align 4
.global f
.type f, #function
.proc 020
f:
st %g0, [%g0+0]
ta 5
.size f, .-f
.ident "GCC: (GNU) 6.1.1 20160526"
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
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