[sdcc-devel] [ sdcc-Bugs-2905892 ] sdcc 2.9 fails to do banksel within interrupt on pic18f46j50

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Bugs item #2905892, was opened at 2009-11-30 20:16
Message generated for change (Tracker Item Submitted) made by jwinfphase
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Category: pic16 target
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: jwinfphase (jwinfphase)
Assigned to: Nobody/Anonymous (nobody)
Summary: sdcc 2.9 fails to do banksel within interrupt on pic18f46j50

Initial Comment:
at least thats what I think is happening 

i can set global variables but the interrupt 
handler reads them as zero

if I force the interrupt handler to write to those
global variables first with good values the thing works
so obviously the global scope and the interrupt
hanlder are not accessing the same memory.

I collected the snippets together in the attachment.
I can prepare a small isolated testcase if you
think the bug can be fixed.

the code worked previously on a pic18f4550   SDCC 2.6.1
I cant go back to this because I need to use the 46J50

SDCC : mcs51/gbz80/z80/avr/ds390/pic16/pic14/TININative/xa51/ds400/hc08 2.9.4 #5564 (Nov  4 2009) (UNIX)
gputils-0.13.7 

/root/c_and_c++_compilers_and_cint/sdcc/bin/sdcc -o bootloader_NOT.hex --optimize-goto --denable-peeps --obanksel=9 --opt-code-size --optimize-cmp --optimize-df --fstack   --use-crt=crt0.o -Wl-s18f46j50.lkr,-m -mpic16 -p18f46j50 -llibio18f46j50.lib -llibc18f.lib  application_iface.o boot_main.o boot_iface.o usb.o usb_descriptors.o ep0.o ep1.o ep2.o flash.o config.o interrupt_iface.o 



joh...@in...

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