arch/alpha/kernel/asm-offsets.c

Source file repositories/reference/linux-study-clean/arch/alpha/kernel/asm-offsets.c

File Facts

System
Linux kernel
Corpus path
arch/alpha/kernel/asm-offsets.c
Extension
.c
Size
913 bytes
Lines
33
Domain
Architecture Layer
Bucket
arch/alpha
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Generate definitions needed by assembly language modules.
 * This code generates raw asm output which is post-processed to extract
 * and format the required data.
 */
#define COMPILE_OFFSETS

#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/kbuild.h>
#include <asm/machvec.h>

static void __used foo(void)
{
	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
	DEFINE(TI_FP, offsetof(struct thread_info, fp));
	DEFINE(TI_STATUS, offsetof(struct thread_info, status));
	BLANK();

	DEFINE(SP_OFF, offsetof(struct pt_regs, ps));
	DEFINE(SIZEOF_PT_REGS, sizeof(struct pt_regs));
	BLANK();

	DEFINE(SWITCH_STACK_SIZE, sizeof(struct switch_stack));
	BLANK();

	DEFINE(HAE_CACHE, offsetof(struct alpha_machine_vector, hae_cache));
	DEFINE(HAE_REG, offsetof(struct alpha_machine_vector, hae_register));
}

Annotation

Implementation Notes