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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/m68k/kernel/asm-offsets.c
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// SPDX-License-Identifier: GPL-2.0

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/*

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 * This program is used to generate definitions needed by

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 * assembly language modules.

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 *

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 * We use the technique used in the OSF Mach kernel code:

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 * generate asm statements containing #defines,

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 * compile this file to assembler, and then extract the

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 * #defines from the assembly-language output.

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 */

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#define COMPILE_OFFSETS

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#define ASM_OFFSETS_C

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#include <linux/stddef.h>

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#include <linux/sched.h>

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#include <linux/kernel_stat.h>

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#include <linux/kbuild.h>

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#include <asm/bootinfo.h>

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#include <asm/irq.h>

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#include <asm/amigahw.h>

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#include <linux/font.h>

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int main(void)

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{

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	/* offsets into the task struct */

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	DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));

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	DEFINE(TASK_MM, offsetof(struct task_struct, mm));

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	DEFINE(TASK_STACK, offsetof(struct task_struct, stack));

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	/* offsets into the thread struct */

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	DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));

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	DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));

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	DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));

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	DEFINE(THREAD_FC, offsetof(struct thread_struct, fc));

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	DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));

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	DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));

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	DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));

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	DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));

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	DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));

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	/* offsets into the thread_info struct */

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	DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));

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	DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));

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	/* offsets into the pt_regs */

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	DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));

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	DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));

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	DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));

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	DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));

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	DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));

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	DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));

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	DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));

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	DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));

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	DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));

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	DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));

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	DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));

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	DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));

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	/* bitfields are a bit difficult */

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#ifdef CONFIG_COLDFIRE

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	DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2);

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#else

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	DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);

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#endif

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	/* offsets into the irq_cpustat_t struct */

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	DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));

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	/* signal defines */

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	DEFINE(LSIGSEGV, SIGSEGV);

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	DEFINE(LSEGV_MAPERR, SEGV_MAPERR);

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	DEFINE(LSIGTRAP, SIGTRAP);

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	DEFINE(LTRAP_TRACE, TRAP_TRACE);

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#ifdef CONFIG_MMU

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	/* offsets into the bi_record struct */

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	DEFINE(BIR_TAG, offsetof(struct bi_record, tag));

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	DEFINE(BIR_SIZE, offsetof(struct bi_record, size));

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	DEFINE(BIR_DATA, offsetof(struct bi_record, data));

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	/* offsets into the font_desc struct */

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	DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));

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	DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));

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	DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));

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	DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));

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	DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));

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	DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));

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	/* offsets into the custom struct */

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	DEFINE(CUSTOMBASE, &amiga_custom);

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	DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));

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	DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));

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	DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));

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	DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));

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	DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));

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	DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));

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	DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));

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	DEFINE(CIAABASE, &ciaa);

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	DEFINE(CIABBASE, &ciab);

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	DEFINE(C_PRA, offsetof(struct CIA, pra));

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	DEFINE(ZTWOBASE, zTwoBase);

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	/* enum m68k_fixup_type */

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	DEFINE(M68K_FIXUP_MEMOFFSET, m68k_fixup_memoffset);

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#endif

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	return 0;

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}

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