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Added bscript thing

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William
2026-05-29 10:42:00 -07:00
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docs/vyx.md
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## Introduction
The VYX format, standing for Vystem Executable, is a very simple binary format made for simple binary loading from any environnement. As long as you can access the `.vyx` file, you can load a VYX binary.
The VYX format, standing for Vystem B Executable, is a very simple binary format made for simple binary loading from any environnement. As long as you can access the `.vyx` file, you can load a VYX binary.
## Header
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## Specifications
The VYX binaries use the SystemV ABI. They doesn't support rellocations nor dynamic linking. While relative addressing into the binary code is theoretically working, all the Vystem binaries will be compiled 64 bits static addressing with position-dependent code (non-PIC), especially the kernel. That why respecting the indicated `.text` section base and order of sections loading is extremely important.
The VYX binaries use the SystemV ABI. They doesn't support rellocations nor dynamic linking. While relative addressing into the binary code is theoretically working, all the Vystem B binaries will be compiled 64 bits static addressing with position-dependent code (non-PIC), especially the kernel. That why respecting the indicated `.text` section base and order of sections loading is extremely important.
Obviously, the right privileges should be applied in term of pagging: no execution unless `.text` pages, read only `.text` and `.rodata` sections, read-write `.data` and `.bss` sections.
For the moment, the entry point is located at the base of the `.text` section.
The stack size can be decided at the convenience of the loader, but the stack size used for the Shelter kernel is, for the moment, 256 kilobytes. The stack growing downward, the initial stack pointer should be set to stack base + stack size.