Hi,
I'm using an m68k-elf-ld linker (GNU ld version 2.14 20030612) and
relocating sections to a different load address with AT. As the linker
script file for doing this is not so easy to write, I'm often looking at the
mapfile generated by ld to verify that I'm doing everything correct. However
this mapfile often shows totally wrong values, or at least I can't interpret
them. For example look at the following snippet of a script file:
___FBUF_START = 0x00010000;
..flashinit :
{
*(.flashinit)
*(.flashinitdata)
} > FINIT
_ROM_size = 0;
_TEMP_address = ___FBUF_START;
_reset_at = _TEMP_address;
/* The reset section contains code which will be executed at
reset time. It should stay in ROM while the remainder of
the code executes from RAM. */
..reset : AT( _reset_at )
{
...
}
This generates the following mapfile output:
0x00010000 ___FBUF_START = 0x10000
..flashinit 0x00008000 0x1ba
*(.flashinit)
.flashinit 0x00008000 0x11a obj/dcu_prog.o
0x00008000 _copy_to_flash
*(.flashinitdata)
.flashinitdata
0x0000811a 0xa0 obj/dcu_prog.o
0x00000000 _ROM_size = 0x0
-----> 0x00010000 _TEMP_address = ___FBUF_START
-----> 0x00032758 _reset_at = _TEMP_address
..reset 0x04000000 0x800 load address 0x00010000
It is strange that symbol "_reset_at" gets a totally different value than
"_TEMP_address", though one is assigend to the other. Nonetheless it seems
to work OK, because the ..reset section is correctly loaded at 0x10000 as
you can see from the last line. I can only assume that the mapfile info on
"_reset_at" is wrong. This is totally irritating as I think I can not trust
the values listed in the mapfile.
Two years earlier on a different project I had similar problems with a
powerpc-linux-ld (GNU ld version 2.11.92.0.12.3 20011121), so I ask myself
if no-one else has found this bug so far (which I can't believe). Or, what
is more likely, if I'm simply interpreting these values wrong.
Please help me to understand.
Best regards,
Hartmut
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
http://lists.gnu.org/mailman/listinfo/bug-binutils
