From 1767d390fbf3d0c65389de46caf0b6d43ef3b6ad Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Fri, 10 Jul 2026 11:24:56 +0800 Subject: feat: establish bootable new architecture checkpoint Replace the compressed boot path with a relocatable higher-half RISC-V entry, expand memory and SMP support, and add the driver, TTY, VFS, exec, signal, syscall, initramfs, and self-test infrastructure needed for a bootable kernel checkpoint. --- na/arch/riscv/include/asm/sections.h | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 na/arch/riscv/include/asm/sections.h (limited to 'na/arch/riscv/include/asm/sections.h') diff --git a/na/arch/riscv/include/asm/sections.h b/na/arch/riscv/include/asm/sections.h new file mode 100644 index 0000000..454d9de --- /dev/null +++ b/na/arch/riscv/include/asm/sections.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Copyright (C) 2026 Richard Qin */ + +#ifndef _ASM_RISCV_SECTIONS_H +#define _ASM_RISCV_SECTIONS_H + +/* + * Linker-emitted symbols that bracket each section of the kernel image. + * + * The lumeos.lds.S linker script defines these as the start / end + * addresses of contiguous regions. Code that walks a section + * (relocate_kernel walks .rela.dyn, the C++ ctor loop walks + * .init_array, the VMM mapping code walks .text vs .rodata, ...) + * imports the pair via this header. + * + * Mirrors Linux arch/riscv/include/asm/sections.h / asm-generic/sections.h. + * Each name and pair is identical to Linux so that direct ports of mm/init.c + * relocate_kernel logic compile unchanged against LumeOS. + */ + +#ifdef __cplusplus +extern "C" { +#endif + +extern char _start[]; +extern char _end[]; + +extern char _stext[]; +extern char _etext[]; +extern char _srodata[]; +extern char _erodata[]; +extern char _sdata[]; +extern char _edata[]; +extern char _sbss[]; +extern char _ebss[]; + +extern char __init_array_start[]; +extern char __init_array_end[]; + +/* .rela.dyn — array of Elf64_Rela entries emitted by the linker under + * `-shared -Bsymbolic`. relocate_kernel walks this range and patches + * each R_RISCV_RELATIVE slot. */ +extern char __rela_dyn_start[]; +extern char __rela_dyn_end[]; + +#ifdef __cplusplus +} +#endif + +#endif /* _ASM_RISCV_SECTIONS_H */ -- cgit v1.2.3