asm-offsets.c

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/*
 * 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.
 */

#define ASM_OFFSETS_C

#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/kernel_stat.h>
#include <linux/kbuild.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/amigahw.h>
#include <linux/font.h>

int main(void)
{
    /* offsets into the task struct */
    DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
    DEFINE(TASK_MM, offsetof(struct task_struct, mm));
    DEFINE(TASK_STACK, offsetof(struct task_struct, stack));

    /* 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, sr));
    DEFINE(THREAD_FS, offsetof(struct thread_struct, fs));
    DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
    DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
    DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
    DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
    DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));

    /* offsets into the thread_info struct */
    DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));
    DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));

    /* offsets into the pt_regs */
    DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));
    DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));
    DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));
    DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));
    DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));
    DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));
    DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));
    DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));
    DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));
    DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));
    DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));
    DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));

    /* bitfields are a bit difficult */
#ifdef CONFIG_COLDFIRE
    DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2);
#else
    DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);
#endif

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

    /* signal defines */
    DEFINE(LSIGSEGV, SIGSEGV);
    DEFINE(LSEGV_MAPERR, SEGV_MAPERR);
    DEFINE(LSIGTRAP, SIGTRAP);
    DEFINE(LTRAP_TRACE, TRAP_TRACE);

#ifdef CONFIG_MMU
    /* offsets into the bi_record struct */
    DEFINE(BIR_TAG, offsetof(struct bi_record, tag));
    DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
    DEFINE(BIR_DATA, offsetof(struct bi_record, data));

    /* offsets into font_desc (drivers/video/console/font.h) */
    DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
    DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
    DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));
    DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));
    DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));
    DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));

    /* offsets into the custom struct */
    DEFINE(CUSTOMBASE, &amiga_custom);
    DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));
    DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));
    DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));
    DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));
    DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));
    DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));
    DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));
    DEFINE(CIAABASE, &ciaa);
    DEFINE(CIABBASE, &ciab);
    DEFINE(C_PRA, offsetof(struct CIA, pra));
    DEFINE(ZTWOBASE, zTwoBase);
#endif

    return 0;
}