trollepi jj wrote:
Hi,
I try to make a ecos project without Redboot for an atmel AT91M55800A
(phycore). So it's a RAM project. I compile and debug an application without
any problems.
When i try to generate a SWI (with asm("swi")), the application reach the
exeption handler that I define but the number of the exception is not
CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT (number 2 that i give on cyg_exception_set_handler)
but CYGNUM_HAL_VECTOR_ABORT_PREFETCH (number 3) . Maybe I might modify vector.S to do the
remap (like hal_platform_setup.h ). If anybody have an idea? I search on your mailing and
nothing fit well.
Why are you trying to use the SWI instruction?
In any case, it looks like there is a typo in the SWI handler.
I'm pretty sure no one has ever actually used this path!
Please try the attached patch and let me know if it fixes
your problem.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
Index: hal/arm/arch/current/src/vectors.S
===================================================================
--- hal/arm/arch/current/src/vectors.S (revision 3391)
+++ hal/arm/arch/current/src/vectors.S (working copy)
@@ -539,7 +539,8 @@
tst r1,#CPSR_THUMB_ENABLE
subeq r0,lr,#4 // PC at time of SWI (ARM)
subne r0,lr,#2 // PC at time of SWI (thumb)
- mov r2,#CYGNUM_HAL_EXCEPTION_INTERRUPT
+ mov r2,#CYGNUM_HAL_EXCEPTION_SOFTWARE_INTERRUPT
+ mov r3,sp
b call_exception_handler
.code 32
--
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