diff options
Diffstat (limited to 'arch/riscv/kernel/asm-offsets.c')
| -rw-r--r-- | arch/riscv/kernel/asm-offsets.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/riscv/kernel/asm-offsets.c b/arch/riscv/kernel/asm-offsets.c new file mode 100644 index 0000000..edecab7 --- /dev/null +++ b/arch/riscv/kernel/asm-offsets.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// Copyright (C) 2026 Richard Qin +// +// arch/riscv/kernel/asm-offsets.c — emit struct field offsets and +// scalar constants for consumption by assembly sources (head.S etc.). +// +// 1:1 with Linux arch/riscv/kernel/asm-offsets.c. The Makefile +// compiles this to an .s file (not .o) and runs +// scripts/extract-asm-offsets.sed over the output to produce +// include/generated/asm-offsets.h. +// +// Adding a new offset: include the struct's header, add an OFFSET() +// or DEFINE() line below, rebuild. head.S can then reference the +// generated #define directly. + +#include <lume/kbuild.h> +#include <lume/kernel_map.h> + +void asm_offsets(void) +{ + COMMENT("LumeOS asm-offsets — struct kernel_mapping field offsets"); + OFFSET(KERNEL_MAP_VIRT_ADDR, kernel_mapping, virt_addr); + OFFSET(KERNEL_MAP_VIRT_OFFSET, kernel_mapping, virt_offset); + OFFSET(KERNEL_MAP_PHYS_ADDR, kernel_mapping, phys_addr); + OFFSET(KERNEL_MAP_SIZE, kernel_mapping, size); + OFFSET(KERNEL_MAP_VA_PA_OFFSET, kernel_mapping, va_pa_offset); + OFFSET(KERNEL_MAP_PAGE_OFFSET, kernel_mapping, page_offset); + OFFSET(KERNEL_MAP_VA_KERNEL_PA_OFFSET, kernel_mapping, va_kernel_pa_offset); +} |