Is it possible to make a direct 64 bit Linux syscall from a 32 bit fpc programm?
Mailing lists / fpc-pascal / 2021-12
64 bit Linux syscall from 32 bit fpc program
3 messages · 2 people ·
- Rainer Stratmann 2
- Sven Barth 1
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Rainer Stratmann via fpc-pascal schrieb
am Fr., 24. Dez. 2021, 15:04:
Is it possible to make a direct 64 bit Linux syscall from a 32 bit fpc programm?
No, because your program is running as a 32-bit process and thus only has access to the 32-bit space of syscalls.
Why, what do you want to do?
Regards,
Sven
Sven Barth wrote 10 lines
Rainer Stratmann via fpc-pascal schrieb
am Fr., 24. Dez. 2021, 15:04:
> Is it possible to make a direct 64 bit Linux syscall from a 32 bit fpc
> programm?
No, because your program is running as a 32-bit process and thus only has
access to the 32-bit space of syscalls.
Why, what do you want to do?
My Kernel Mode Setting Program is not working on the latest Debian Linux 64 Bit Kernel.
Debian 10 - 32 Bit Linux - it works
Debian 10 - 64 Bit Linux - it works
Debian 11 - 32 Bit Linux - it works
Debian 11 - 64 Bit Linux - it does not work
It has something to do with mmap2 and may be the vtconsole. I guess mmap2 is not working correctly in Debian 11 - 64 Bit Linux. Or the vtconsole takes over the framebuffer.
Regards, Sven