mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
d25ba98afc
Currently on m68k we have a comeplete thread_info structure stored inside of the thread_struct, and we also have it in the initial part of the kernel stack. Mostly the code currently uses the one inside of the thread_struct, only using the "task" pointer from the stack based one. This is wasteful and confusing, we should only have the single instance of thread_info inside the stack page. And this is the norm for all other architectures. This change makes m68k handle thread_info consistently on both MMU enabled and non-MMU setups. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/*
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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 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_FS, offsetof(struct thread_struct, fs));
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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 font_desc (drivers/video/console/font.h) */
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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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#endif
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return 0;
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}
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