Date: Sat, 24 Apr 1999 23:15:20 -0500 From: Dan Nelson <dnelson@emsphone.com> To: freebsd-svr4@atdot.dotat.org, freebsd-emulation@freebsd.org Subject: Anyone working on SCO ELF binary emulation? Message-ID: <19990424231519.A25153@dan.emsphone.com>
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I have the duty of making the latest MicroFocus COBOL compiler run on FreeBSD, and was wondering if anyone has had any luck getting SCO/ELF binaries to run under emulation on -current. MicroFocus has binaries for SCO 3.2v4.2 which I'm sure will work, but I wanted to see how hard it would be to get the current 5.0.4 binaries to work on BSD. What I've done so far is just made the xenix syscall jump into the ibcs xenix code, since even the latest SCO binaries want to call obsolete xenix syscalls. /bin/sh works, almost. The COBOL installer program runs until it tries to execute the 'pwd' command. It segfaults after doing an fstat on ".." 6068 sh CALL svr4_sys_open(0xbfbfd1a9,0x80,0x280ac28c) 6068 sh NAMI ".." 6068 sh RET svr4_sys_open 3 6068 sh CALL svr4_sys_fcntl(0x3,0x2,0x1) 6068 sh RET svr4_sys_fcntl 0 6068 sh CALL svr4_sys_fstat(0x3,0xbfbfc960) 6068 sh RET svr4_sys_fstat 0 6068 sh PSIG SIGSEGV caught handler=0x804b220 mask=0x0 code=0xc and I guess from here on it's executing random code. 6068 sh CALL svr4_sys_break(0x80592cc) 6068 sh RET svr4_sys_break 0 6068 sh CALL chown(0xbfbfc6c4,0xb,0xbfbfc8c4) 6068 sh NAMI "^G" 6068 sh RET chown -1 errno 2 No such file or directory 6068 sh CALL #112 6068 sh PSIG SIGSYS caught handler=0x804b0d0 mask=0x400 code=0x0 6068 sh RET #112 -1 errno 22 Invalid argument 6068 sh CALL exit(0) Right at the start of the program's execution, it makes a sysarch() syscall with subfunction 114. SCO's documentation lists it as SI86GETFEATURES, but of course doesn't say what the arguments are, or what I should be returning. My guess is that my failure to return valid info for this syscall is what's making 'pwd' fail. With the lack of documenation SCO provides, I'm surprised the ibcs/coff emulation code got wirrten at all. -Dan Nelson dnelson@emsphone.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-emulation" in the body of the message
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