IBM S/370 and binutils

David and Jannette Uczen
Fri Oct 29 18:27:00 GMT 1999

You should be able to get an ABI from Amdahl Corporation, through UTS
Technical Support. I have contacted a Chris A. Swartout
(, who verified that the value of EM_S370 (9) is used
for IBM System/370 Processors. This value still exists in the binutils
source (/binutils/include/elf/common.h).
I have had the value officially registered with SCO ( A
new ABI is going to be published soon.
I myself am trying to get ABI information, but haven't heard back yet.


-----Original Message-----
From: <>
To: David and Jannette Uczen <>
Cc: <>;
<>; <>
Date: Friday, October 29, 1999 12:22 PM
Subject: Re: IBM S/370 and binutils

>> -----Original Message-----
>> From: Ian Lance Taylor <>
>> To: <>
>> Cc: <>
>> Date: Wednesday, October 27, 1999 7:40 PM
>> Subject: Re: IBM S/370 and binutils
>> >   From: "David and Jannette Uczen" <>
>> >   Date: Wed, 27 Oct 1999 19:22:49 -0400
>> >
>> >   I am forwarding this message to inform the binutils developers that I
>> >   believe that any further use of the ELF machine type EM_I370 (0xF00F)
>> should
>> >   be discontinued.
>I picked this value in the absence of any other suitable value.
>There is no formal ELF ABI that would specify such a value,
>although I have been working on & off with folks inside of IBM
>(the TJ Watson research center) to create such an ABI.  Clearly,
>among the first steps would be to designate a machine type.
>Please let me know who I should contact to get this (and also,
>a type for the binary format) reserved in the most suitably
>official manner possible.

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