[Info-vax] Android development Was Re: OT: Larry Ellison takes retirement as CEO of Oracle

[JF Mezei]

On 14-09-21 01:41, David Froble wrote:

> x86 has an instruction set.
> 
> If you can get some x86 instructions into memory, and get them to start 
> executing, that would be an issue.

The VMS image activator would need to be modified to detect a Linux
image, and likely invoke some Unix emulator that would provide the
dynamic linking to Unix-like libraries built on VMS, and more
importantly, capture any internal unix calls and emulate Linux' expected
behaviour.

Consider code that has all the opcodes to setup a Unix IO call to output
"Hello World" to stdout.  The emulator would have to trap the IO
instruction, interpret the environment and then issue the equivalent
$QIO to send "Hello World" to "stdout" (assumed to be a logical poiting
to SYS$OUTPUT).