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ld -relax on SH coff
From: |
Schirmer, Hartmut |
Subject: |
ld -relax on SH coff |
Date: |
Mon, 15 Oct 2001 15:49:58 +0200 |
Hi,
-relax doesn't work well on Hitachi SH
A.) Offset added multiple times
In my linker script I define an external jump table
SECTIONS
{
/*** DRAM ***/
[...]
.jumptable (NOLOAD):
{
. = . + 0x0010;
* (.jptable)
} >dram_jmp =0x0000
[...]
}
After I disabled sh_relax_section() in bfd/coff-sh.c
I checked the size of .jumptable in the map file:
normal: 0xc10
with -relax: 0xc20
This worked after shifting the dram_jmp by 0x0010
B.) Software crashes
The resulting image runs quite well. Sadly it crashes
with an 'illegale opcode' cpu exception in at least on
source file.
I disabled parts of sh_relax_section():
- the mov.l alignment code -> still crashes
- delete after jsr-bsr relax -> code works
Looks like sh_relax_delete_bytes() mixed up something.
I have no chance to debug the target, sorry.
Hartmut
---------------------------------------
innovative systems GmbH
harman OEM Group
Hartmut Schirmer
Software Development Department
fon +49 (0) 40 - 300 67 - 850
fax +49 (0) 40 - 300 67 - 969
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