[ECOS] Porting to Atmel AT91 - stub image is *very* big
Andrew Lunn
andrew.lunn@ascom.ch
Thu Nov 9 08:44:00 GMT 2000
> gdb-stub and got a gdb-module.img- and a gdb-module.bin-file. BUT they
> are _very_ big:
>
> -rwxr-xr-x 1 andreas users 16788008 Nov 9 16:41 gdb_module.bin
> -rwxr-xr-x 1 andreas users 240613 Nov 9 16:41 gdb_module.img
gdb_module.img will be an elf image, so generaly is big. It has all
the symbol table etc. Do
arm-elf-size gdb_module.img
and you can find out the real size.
gdb_module.bin should not be that size. A little bit of maths...
1678800 = 0x1002a28.
0x1400000 - 0x0400000 = 0x1000000.
> MEMORY
> {
> onchip_ram : ORIGIN = 0x0, LENGTH = 0x2000
> dram : ORIGIN = 0x00400000, LENGTH = 0x200000
> rom : ORIGIN = 0x01400000, LENGTH = 0x100000
> reserved : ORIGIN = 0x00100000, LENGTH = 0x200000
> }
My guess is that the executable code is about 0x2a28 bytes and that
arm-elf-objcopy has started its binary from 0x00400000 not 0x01400000
as you would execpt. This means there must be something in the RAM
region that should not be.
Do an
arm-elf-objdump --headers gdb_module.img
and see what sections it has in RAM. Work out what should be in ROM
and move it to ROM.
Andrew
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