kern/156353: ibcs2 binaries that execute on 4.x not working on 8.0 Abort Trap

[Richard Naill]

>Number:         156353
>Category:       kern
>Synopsis:       ibcs2 binaries  that execute on 4.x not working on 8.0 Abort Trap
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Apr 12 13:20:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Richard Naill
>Release:        FreeBSD 8.0
>Organization:
Enterprise Systems Inc
>Environment:
FreeBSD esi2.bsd 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:48:17 UTC 200
9     root at almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
SCO binaries that execute in FreeBSD 4.x ok, IN FreeBSD 8.0 give error

This problem has occured since FreeBSD 5.x

$ ./pcmp
Abort trap

# kldstat
Id Refs Address    Size     Name
 1    8 0xc0400000 b6dfe0   kernel
 2    2 0xc5bc4000 b000     ibcs2.ko
 3    1 0xc5bd1000 3000     ibcs2_coff.ko

$ file pcmp
pcmp: 80386 COFF executable
$ truss ./pcmp
truss: can not get etype: No such process

IN FreeBSD 4.11
$ uname -a
FreeBSD esi.bsd 4.11-RELEASE FreeBSD 4.11-RELEASE #9: Wed May 26 08:16:14 EDT 20
10     root at esi.bsd:/usr/src/sys/compile/MYKERNEL  i386

$ ./pcmp
usage: ./pcmp [1st lib # to cmp] [2nd lib # to cmp]

$ file ./pcmp
./pcmp: MS Windows COFF Intel 80386 object file

$ truss ./pcmp
truss: Execution type IBCS2 COFF is not supported -- using FreeBSD a.out
: Unknown error: 0
truss: Execution type IBCS2 COFF is not supported -- using FreeBSD a.out
: Invalid argument
ioctl(1,0x5401,0xbfbfe7c2)                       = 0 (0x0)
usage: ./pcmp [1st lib # to cmp] [2nd lib # to cmp]

write(1,0x403ccc,53)                             = 53 (0x35)
Sample: ./pcmp 1 2

write(1,0x403ccc,21)                             = 21 (0x15)
        ** this will compare lib_1
write(1,0x403ccc,36)                             = 36 (0x24)
        **             to    lib_2

write(1,0x403ccc,37)                             = 37 (0x25)
close(0)                                         = 0 (0x0)
close(1)                                         = 0 (0x0)
close(2)                                         = 0 (0x0)
exit(0xffffffff)                                process exit, rval = 65280
>How-To-Repeat:
See above
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: