[ECOS] 4373board stubrom problem

[pyxue <root at t2-design dot com>]

Hi, I have sucessfully built the toolchain and tests for mips4300, but now
I meet a problem, I can download the tests to the 4373board, but I can't
get the correct result. Following is the information I get .

bash-2.02$ mips64vr4300-elf-gdb -nw thread_gdb.exe
.........( the messages of gdb)
(gdb) set remotebaud 38400
(gdb) set mips-force-32bit-saved-gpregs 
(gdb) set heuristic-fence-post 0x00005000
(gdb) target remote com1
Remote debugging using com1
0xbfc04550 in ?? ()
(gdb) load 
..................(load the test well)
(gdb)c
Continuing.

But the test seems stop, and doesn't give any result, after a while, I
reset the target, I get the following message:

Program received signal SIGTRAP, trace/breakpoint trap
0xbfc04550 in ?? ()

I didn't know why the program stops at the address 0xbfc04550, maybe
something is wrong with the gdb stubrom, but I try several stubroms with
different configurations, and get the same result. I use the EPROM
M27c4001-12F1, and the Rom address is 0xbfc00000, ram address is
0x80000100. When I try to set the ram address to 0xa0000100, and the same
problem remains. Can someone do me a favor to solve the problem, Thanks a
lot!