asm-offsets.c

来自「linux 内核源代码」· C语言 代码 · 共 333 行 · 第 1/2 页

/*
 * This program is used to generate definitions needed by
 * assembly language modules.
 *
 * We use the technique used in the OSF Mach kernel code:
 * generate asm statements containing #defines,
 * compile this file to assembler, and then extract the
 * #defines from the assembly-language output.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/suspend.h>
#ifdef CONFIG_PPC64
#include <linux/time.h>
#include <linux/hardirq.h>
#else
#include <linux/ptrace.h>
#endif

#include <asm/io.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/thread_info.h>
#include <asm/rtas.h>
#include <asm/vdso_datapage.h>
#ifdef CONFIG_PPC64
#include <asm/paca.h>
#include <asm/lppaca.h>
#include <asm/cache.h>
#include <asm/compat.h>
#include <asm/mmu.h>
#include <asm/hvcall.h>
#endif

#define DEFINE(sym, val) \
	asm volatile("\n->" #sym " %0 " #val : : "i" (val))

#define BLANK() asm volatile("\n->" : : )

int main(void)
{
	DEFINE(THREAD, offsetof(struct task_struct, thread));
	DEFINE(MM, offsetof(struct task_struct, mm));
#ifdef CONFIG_PPC64
	DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context));
#else
	DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
	DEFINE(PTRACE, offsetof(struct task_struct, ptrace));
#endif /* CONFIG_PPC64 */

	DEFINE(KSP, offsetof(struct thread_struct, ksp));
	DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
	DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
	DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
	DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
#ifdef CONFIG_ALTIVEC
	DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
	DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
	DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
	DEFINE(THREAD_USED_VR, offsetof(struct thread_struct, used_vr));
#endif /* CONFIG_ALTIVEC */
#ifdef CONFIG_PPC64
	DEFINE(KSP_VSID, offsetof(struct thread_struct, ksp_vsid));
#else /* CONFIG_PPC64 */
	DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
	DEFINE(THREAD_DBCR0, offsetof(struct thread_struct, dbcr0));
	DEFINE(PT_PTRACED, PT_PTRACED);
#endif
#ifdef CONFIG_SPE
	DEFINE(THREAD_EVR0, offsetof(struct thread_struct, evr[0]));
	DEFINE(THREAD_ACC, offsetof(struct thread_struct, acc));
	DEFINE(THREAD_SPEFSCR, offsetof(struct thread_struct, spefscr));
	DEFINE(THREAD_USED_SPE, offsetof(struct thread_struct, used_spe));
#endif /* CONFIG_SPE */
#endif /* CONFIG_PPC64 */

	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
	DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
	DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
	DEFINE(TI_TASK, offsetof(struct thread_info, task));
#ifdef CONFIG_PPC32
	DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain));
	DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
#endif /* CONFIG_PPC32 */

#ifdef CONFIG_PPC64
	DEFINE(DCACHEL1LINESIZE, offsetof(struct ppc64_caches, dline_size));
	DEFINE(DCACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_dline_size));
	DEFINE(DCACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, dlines_per_page));
	DEFINE(ICACHEL1LINESIZE, offsetof(struct ppc64_caches, iline_size));
	DEFINE(ICACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_iline_size));
	DEFINE(ICACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, ilines_per_page));
	/* paca */
	DEFINE(PACA_SIZE, sizeof(struct paca_struct));
	DEFINE(PACAPACAINDEX, offsetof(struct paca_struct, paca_index));
	DEFINE(PACAPROCSTART, offsetof(struct paca_struct, cpu_start));
	DEFINE(PACAKSAVE, offsetof(struct paca_struct, kstack));
	DEFINE(PACACURRENT, offsetof(struct paca_struct, __current));
	DEFINE(PACASAVEDMSR, offsetof(struct paca_struct, saved_msr));
	DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
	DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
	DEFINE(PACASTABRR, offsetof(struct paca_struct, stab_rr));
	DEFINE(PACAR1, offsetof(struct paca_struct, saved_r1));
	DEFINE(PACATOC, offsetof(struct paca_struct, kernel_toc));
	DEFINE(PACASOFTIRQEN, offsetof(struct paca_struct, soft_enabled));
	DEFINE(PACAHARDIRQEN, offsetof(struct paca_struct, hard_enabled));
	DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
	DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
	DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
	DEFINE(PACAVMALLOCSLLP, offsetof(struct paca_struct, vmalloc_sllp));
#ifdef CONFIG_PPC_MM_SLICES
	DEFINE(PACALOWSLICESPSIZE, offsetof(struct paca_struct,
					    context.low_slices_psize));
	DEFINE(PACAHIGHSLICEPSIZE, offsetof(struct paca_struct,
					    context.high_slices_psize));
	DEFINE(MMUPSIZEDEFSIZE, sizeof(struct mmu_psize_def));
	DEFINE(MMUPSIZESLLP, offsetof(struct mmu_psize_def, sllp));
#else
	DEFINE(PACACONTEXTSLLP, offsetof(struct paca_struct, context.sllp));

#endif /* CONFIG_PPC_MM_SLICES */
	DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
	DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
	DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
	DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
	DEFINE(PACALPPACAPTR, offsetof(struct paca_struct, lppaca_ptr));
	DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
	DEFINE(PACA_STARTPURR, offsetof(struct paca_struct, startpurr));
	DEFINE(PACA_STARTSPURR, offsetof(struct paca_struct, startspurr));
	DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
	DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
	DEFINE(PACA_SLBSHADOWPTR, offsetof(struct paca_struct, slb_shadow_ptr));
	DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
	DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));

	DEFINE(SLBSHADOW_STACKVSID,
	       offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid));
	DEFINE(SLBSHADOW_STACKESID,
	       offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].esid));
	DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0));
	DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1));
	DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
	DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
	DEFINE(SLBSHADOW_SAVEAREA, offsetof(struct slb_shadow, save_area));
#endif /* CONFIG_PPC64 */

	/* RTAS */
	DEFINE(RTASBASE, offsetof(struct rtas_t, base));
	DEFINE(RTASENTRY, offsetof(struct rtas_t, entry));

	/* Interrupt register frame */
	DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);