target/901: Illegal instruction generated in libgcc2.a for a m68k target

[panto@intracom.gr]

>Number:         901
>Category:       target
>Synopsis:       Illegal instruction generated in libgcc2.a for a m68k target
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Mon Nov 27 02:46:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     panto@intracom.gr
>Release:        gcc version 2.95.2 19991024 (release)
>Organization:
>Environment:
Linux 2.2.18 i386, Linux 2.2.18 ppc
>Description:
The library code for libgcc2.a and various other code
fragments in the config/m68k directory contain
calls to jbsr, which incorrectly translate to 
brsl instruction *EVEN* when the code is targeted to 
a lower than a m68020 processor; this instruction
is valid only on a higher than a m68020 cpu.
This is a very serious bug, since the code bombs with
an illegal instruction violation.

The actual target is m68k-unknown-coff, and the
code is targeted to a 68302 cpu.

Actually the culprit could be gas since it is arguable
that the correct definition of jbsr should be jsr in 
the case of a lower than a 68020 cpu, but this hits gcc
pretty badly.
>How-To-Repeat:
./configure --target=m68k-unknown-coff
>Fix:
The diff file fixes the problem at least for me 
>Release-Note:
>Audit-Trail:
>Unformatted:
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