:ihavenomouth: on Nostr: Caleb James DeLisle you know what :scholar: x86 is not fucked up enough ...
Caleb James DeLisle (nprofile…mj4q) you know what
x86 is not fucked up enough
The problem with most 32 bit is it's a compatibility layer for old binaries, so it's an older / trashier instruction set.
What I want is 64 bit registers, 64 bit syscalls, entire system is 64 bit, but, you know that you're never going to have a pointer above 2**32 so you can encode pointers as 32 bit values.
It looks like this is possible already, and it's just ABI/compiler/loader shit to make it work.
mmap() already has a flag MAP_32BIT to require that the mapping goes in the lower 32 bits.
It's probably possible to compile libc/linker/loader with like __INTPTR_WIDTH__ 32 and so on, but telling the compiler to make 64 bit assembly 😈 , and then just patch in a syscall shim so that syscalls are done correctly with 64 bit words.
Published at
2025-01-25 10:22:24Event JSON
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