1. 根目录:
2. arch
3. blackfin
4. kernel
5. asm-offsets.c

/*
 * generate definitions needed by assembly language modules
 *
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later
 */

#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/kernel_stat.h>
#include <linux/ptrace.h>
#include <linux/hardirq.h>
#include <linux/irq.h>
#include <linux/thread_info.h>
#include <linux/kbuild.h>

int main(void)
{
	/* offsets into the task struct */
	DEFINE(TASK_STATE, offsetof(struct task_struct, state));
	DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
	DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
	DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
	DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
	DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack));
	DEFINE(TASK_MM, offsetof(struct task_struct, mm));
	DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
	DEFINE(TASK_SIGPENDING, offsetof(struct task_struct, pending));

	/* offsets into the irq_cpustat_t struct */
	DEFINE(CPUSTAT_SOFTIRQ_PENDING,
	       offsetof(irq_cpustat_t, __softirq_pending));

	/* offsets into the thread struct */
	DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
	DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
	DEFINE(THREAD_SR, offsetof(struct thread_struct, seqstat));
	DEFINE(PT_SR, offsetof(struct thread_struct, seqstat));
	DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
	DEFINE(THREAD_PC, offsetof(struct thread_struct, pc));
	DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);

	/* offsets into the pt_regs */
	DEFINE(PT_ORIG_R0, offsetof(struct pt_regs, orig_r0));
	DEFINE(PT_ORIG_P0, offsetof(struct pt_regs, orig_p0));
	DEFINE(PT_ORIG_PC, offsetof(struct pt_regs, orig_pc));
	DEFINE(PT_R0, offsetof(struct pt_regs, r0));
	DEFINE(PT_R1, offsetof(struct pt_regs, r1));
	DEFINE(PT_R2, offsetof(struct pt_regs, r2));
	DEFINE(PT_R3, offsetof(struct pt_regs, r3));
	DEFINE(PT_R4, offsetof(struct pt_regs, r4));
	DEFINE(PT_R5, offsetof(struct pt_regs, r5));
	DEFINE(PT_R6, offsetof(struct pt_regs, r6));
	DEFINE(PT_R7, offsetof(struct pt_regs, r7));

	DEFINE(PT_P0, offsetof(struct pt_regs, p0));
	DEFINE(PT_P1, offsetof(struct pt_regs, p1));
	DEFINE(PT_P2, offsetof(struct pt_regs, p2));
	DEFINE(PT_P3, offsetof(struct pt_regs, p3));
	DEFINE(PT_P4, offsetof(struct pt_regs, p4));
	DEFINE(PT_P5, offsetof(struct pt_regs, p5));

	DEFINE(PT_FP, offsetof(struct pt_regs, fp));
	DEFINE(PT_USP, offsetof(struct pt_regs, usp));
	DEFINE(PT_I0, offsetof(struct pt_regs, i0));
	DEFINE(PT_I1, offsetof(struct pt_regs, i1));
	DEFINE(PT_I2, offsetof(struct pt_regs, i2));
	DEFINE(PT_I3, offsetof(struct pt_regs, i3));
	DEFINE(PT_M0, offsetof(struct pt_regs, m0));
	DEFINE(PT_M1, offsetof(struct pt_regs, m1));
	DEFINE(PT_M2, offsetof(struct pt_regs, m2));
	DEFINE(PT_M3, offsetof(struct pt_regs, m3));
	DEFINE(PT_L0, offsetof(struct pt_regs, l0));
	DEFINE(PT_L1, offsetof(struct pt_regs, l1));
	DEFINE(PT_L2, offsetof(struct pt_regs, l2));
	DEFINE(PT_L3, offsetof(struct pt_regs, l3));
	DEFINE(PT_B0, offsetof(struct pt_regs, b0));
	DEFINE(PT_B1, offsetof(struct pt_regs, b1));
	DEFINE(PT_B2, offsetof(struct pt_regs, b2));
	DEFINE(PT_B3, offsetof(struct pt_regs, b3));
	DEFINE(PT_A0X, offsetof(struct pt_regs, a0x));
	DEFINE(PT_A0W, offsetof(struct pt_regs, a0w));
	DEFINE(PT_A1X, offsetof(struct pt_regs, a1x));
	DEFINE(PT_A1W, offsetof(struct pt_regs, a1w));
	DEFINE(PT_LC0, offsetof(struct pt_regs, lc0));
	DEFINE(PT_LC1, offsetof(struct pt_regs, lc1));
	DEFINE(PT_LT0, offsetof(struct pt_regs, lt0));
	DEFINE(PT_LT1, offsetof(struct pt_regs, lt1));
	DEFINE(PT_LB0, offsetof(struct pt_regs, lb0));
	DEFINE(PT_LB1, offsetof(struct pt_regs, lb1));
	DEFINE(PT_ASTAT, offsetof(struct pt_regs, astat));
	DEFINE(PT_RESERVED, offsetof(struct pt_regs, reserved));
	DEFINE(PT_RETS, offsetof(struct pt_regs, rets));
	DEFINE(PT_PC, offsetof(struct pt_regs, pc));
	DEFINE(PT_RETX, offsetof(struct pt_regs, retx));
	DEFINE(PT_RETN, offsetof(struct pt_regs, retn));
	DEFINE(PT_RETE, offsetof(struct pt_regs, rete));
	DEFINE(PT_SEQSTAT, offsetof(struct pt_regs, seqstat));
	DEFINE(PT_SYSCFG, offsetof(struct pt_regs, syscfg));
	DEFINE(PT_IPEND, offsetof(struct pt_regs, ipend));
	DEFINE(SIZEOF_PTREGS, sizeof(struct pt_regs));
	DEFINE(PT_TEXT_ADDR, sizeof(struct pt_regs));        /* Needed by gdb */
	DEFINE(PT_TEXT_END_ADDR, 4 + sizeof(struct pt_regs));/* Needed by gdb */
	DEFINE(PT_DATA_ADDR, 8 + sizeof(struct pt_regs));    /* Needed by gdb */
	DEFINE(PT_FDPIC_EXEC, 12 + sizeof(struct pt_regs));  /* Needed by gdb */
	DEFINE(PT_FDPIC_INTERP, 16 + sizeof(struct pt_regs));/* Needed by gdb */

	/* signal defines */
	DEFINE(SIGSEGV, SIGSEGV);
	DEFINE(SIGTRAP, SIGTRAP);

	/* PDA management (in L1 scratchpad) */
	DEFINE(PDA_SYSCFG, offsetof(struct blackfin_pda, syscfg));
#ifdef CONFIG_SMP
	DEFINE(PDA_IRQFLAGS, offsetof(struct blackfin_pda, imask));
#endif
	DEFINE(PDA_IPDT, offsetof(struct blackfin_pda, ipdt));
	DEFINE(PDA_IPDT_SWAPCOUNT, offsetof(struct blackfin_pda, ipdt_swapcount));
	DEFINE(PDA_DPDT, offsetof(struct blackfin_pda, dpdt));
	DEFINE(PDA_DPDT_SWAPCOUNT, offsetof(struct blackfin_pda, dpdt_swapcount));
	DEFINE(PDA_EXIPTR, offsetof(struct blackfin_pda, ex_iptr));
	DEFINE(PDA_EXOPTR, offsetof(struct blackfin_pda, ex_optr));
	DEFINE(PDA_EXBUF, offsetof(struct blackfin_pda, ex_buf));
	DEFINE(PDA_EXIMASK, offsetof(struct blackfin_pda, ex_imask));
	DEFINE(PDA_EXSTACK, offsetof(struct blackfin_pda, ex_stack));
	DEFINE(PDA_EXIPEND, offsetof(struct blackfin_pda, ex_ipend));
#ifdef ANOMALY_05000261
	DEFINE(PDA_LFRETX, offsetof(struct blackfin_pda, last_cplb_fault_retx));
#endif
	DEFINE(PDA_DCPLB, offsetof(struct blackfin_pda, dcplb_fault_addr));
	DEFINE(PDA_ICPLB, offsetof(struct blackfin_pda, icplb_fault_addr));
	DEFINE(PDA_RETX, offsetof(struct blackfin_pda, retx));
	DEFINE(PDA_SEQSTAT, offsetof(struct blackfin_pda, seqstat));
#ifdef CONFIG_DEBUG_DOUBLEFAULT
	DEFINE(PDA_DF_DCPLB, offsetof(struct blackfin_pda, dcplb_doublefault_addr));
	DEFINE(PDA_DF_ICPLB, offsetof(struct blackfin_pda, icplb_doublefault_addr));
	DEFINE(PDA_DF_SEQSTAT, offsetof(struct blackfin_pda, seqstat_doublefault));
	DEFINE(PDA_DF_RETX, offsetof(struct blackfin_pda, retx_doublefault));
#endif
#ifdef CONFIG_SMP
	/* Inter-core lock (in L2 SRAM) */
	DEFINE(SIZEOF_CORELOCK, sizeof(struct corelock_slot));
#endif

	return 0;
}