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Diffstat (limited to 'arch/riscv/include/asm/sections.h')
| -rw-r--r-- | arch/riscv/include/asm/sections.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/sections.h b/arch/riscv/include/asm/sections.h new file mode 100644 index 0000000..454d9de --- /dev/null +++ b/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 */ |