asm-offsets.c

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * This program is used to generate definitions needed by
  4 * assembly language modules.
  5 *
  6 * We use the technique used in the OSF Mach kernel code:
  7 * generate asm statements containing #defines,
  8 * compile this file to assembler, and then extract the
  9 * #defines from the assembly-language output.
 10 */
 11
 12#define COMPILE_OFFSETS
 13#define ASM_OFFSETS_C
 14
 15#include <linux/stddef.h>
 16#include <linux/sched.h>
 17#include <linux/kernel_stat.h>
 18#include <linux/kbuild.h>
 19#include <asm/bootinfo.h>
 20#include <asm/irq.h>
 21#include <asm/amigahw.h>
 22#include <linux/font.h>
 23
 24int main(void)
 25{
 26	/* offsets into the task struct */
 27	DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
 28	DEFINE(TASK_MM, offsetof(struct task_struct, mm));
 29	DEFINE(TASK_STACK, offsetof(struct task_struct, stack));
 30
 31	/* offsets into the thread struct */
 32	DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
 33	DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
 34	DEFINE(THREAD_SR, offsetof(struct thread_struct, sr));
 35	DEFINE(THREAD_FC, offsetof(struct thread_struct, fc));
 36	DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp));
 37	DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
 38	DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp));
 39	DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl));
 40	DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate));
 41
 42	/* offsets into the thread_info struct */
 43	DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count));
 44	DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags));
 45
 46	/* offsets into the pt_regs */
 47	DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0));
 48	DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0));
 49	DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1));
 50	DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2));
 51	DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3));
 52	DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4));
 53	DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5));
 54	DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0));
 55	DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1));
 56	DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2));
 57	DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc));
 58	DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr));
 59
 60	/* bitfields are a bit difficult */
 61#ifdef CONFIG_COLDFIRE
 62	DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2);
 63#else
 64	DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4);
 65#endif
 66
 67	/* offsets into the irq_cpustat_t struct */
 68	DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
 69
 70	/* signal defines */
 71	DEFINE(LSIGSEGV, SIGSEGV);
 72	DEFINE(LSEGV_MAPERR, SEGV_MAPERR);
 73	DEFINE(LSIGTRAP, SIGTRAP);
 74	DEFINE(LTRAP_TRACE, TRAP_TRACE);
 75
 76#ifdef CONFIG_MMU
 77	/* offsets into the bi_record struct */
 78	DEFINE(BIR_TAG, offsetof(struct bi_record, tag));
 79	DEFINE(BIR_SIZE, offsetof(struct bi_record, size));
 80	DEFINE(BIR_DATA, offsetof(struct bi_record, data));
 81
 82	/* offsets into the font_desc struct */
 83	DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx));
 84	DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name));
 85	DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width));
 86	DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height));
 87	DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data));
 88	DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref));
 89
 90	/* offsets into the custom struct */
 91	DEFINE(CUSTOMBASE, &amiga_custom);
 92	DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar));
 93	DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr));
 94	DEFINE(C_INTENA, offsetof(struct CUSTOM, intena));
 95	DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq));
 96	DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr));
 97	DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat));
 98	DEFINE(C_SERPER, offsetof(struct CUSTOM, serper));
 99	DEFINE(CIAABASE, &ciaa);
100	DEFINE(CIABBASE, &ciab);
101	DEFINE(C_PRA, offsetof(struct CIA, pra));
102	DEFINE(ZTWOBASE, zTwoBase);
103
104	/* enum m68k_fixup_type */
105	DEFINE(M68K_FIXUP_MEMOFFSET, m68k_fixup_memoffset);
106#endif
107
108	return 0;
109}