[Info-vax] The (now lost) future of Alpha.

[Arne Vajhøj]

On 8/5/2018 7:25 PM, Bill Gunshannon wrote:
> On 08/05/2018 04:35 PM, Arne Vajhøj wrote:
>> On 8/5/2018 9:38 AM, Craig A. Berry wrote:
>>> On 8/4/18 1:19 PM, Arne Vajhøj wrote:
>>>> What system services do a compiler need?
>>>>
>>>> (besides what is available in standard C RTL)
>>>
>>> Things such as file I/O that are not in libc on most systems. However,
>>> those systems tend to have C-friendly syscalls, so you still wouldn't
>>> need assembler.
>>
>> I am note sure that IBM mainframe got syscalls.
>>
>> But there are something. There is the standard C RTL. And
>> there are usually a pretty big chunk of extras. If it
>> does not have native *nix syscalls then it usually have
>> library emulating them.
>>
>> I find it very difficult to imagine deciding to
>> use assembler to be able to read source files
>> and write either assembler code or object code.
> 
> A quick look at a C compiler for z/OS, CMS, MVS and OS/390
> shows support for open(), close(), read(), write() and even
> fork().

z/OS with USS got UNIX 95 certified.

Arne