X86_64 LINUX RUNTIME

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EXACT SOURCE NOTE: this package source retains (v12.2 draft) in the title while its Status: line declares the document a normative v12.2.0 release contract. The raw file is preserved byte-for-byte.

X86_64 Linux Runtime (v12.2 draft)§

Status: normative release contract for v12.2.0.

x86_64-dbyte-linux produces a static ELF64 executable with an internal _start. Entry supports main() and the checked three-argument main(argc, argv, envp) form. The return status reaches the Linux exit system call without libc or a dynamic loader.

Versioned runtime capabilities cover exit, read, write, mmap, munmap, openat, close, and clock_gettime. Raw syscall emission is restricted to the canonical runtime capability surface. Ordinary source uses checked runtime wrappers and cannot request arbitrary syscall numbers.

SystemAllocator uses mmap/munmap. Resize allocates replacement storage, copies the bounded common prefix, and unmaps the old allocation only after the replacement succeeds. Failure preserves the original allocation. The runtime does not import libc, compiler-rt, or host allocation machinery.

extern "C" uses SysV AMD64. C fixture objects may be produced by the pinned Clang command but are consumed by DByte's ELF64 parser, archive extractor, and linker. The final image remains static and DByte-linked.