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Simulator Porting
- From: "Shilin Shakti" <shilins at KPITCummins dot com>
- To: <cgen at sources dot redhat dot com>
- Date: Tue, 24 May 2005 12:26:48 +0530
- Subject: Simulator Porting
Hi all,
I am having some trouble trying to port a simulator for a new target.
Actually i have modelled the required simulator files like mloop.in, sim-if.c, etc, for my port to be as close to the existing m32r base port.
However when i try to execute a program using my simulator, it gives the following message:
"2 byte write to unmapped address 0xfffffffe at 0x404",
while the similar m32r program runs fine. At 0x404 is a move immediate data instruction in my case (but how this 0xfffffffe address i'm confused!!).
I do not know why this is coming. Currently i have changed a few constants of m32r base port like the M32R_DEVICE_ADDR,M32R_DEVICE_LEN and M32R_DEFAULT_MEM_SIZE to match those of my processor. Still why this error
for 0xfffffffe,etc is coming into picture i am not sure.
Please could anyone provide any help in this regard.
Currently i have two terminals open, one where i'm debugging my ported simulator on native gdb, and other debugging the existing m32r base simulator, for the sake of reference of execution flow, etc :-)) (to see where i'm going wrong!)..But still no luck..
Kindly advice anyone,
Thanking you in advance,
Best Regards,
Shilin
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