LXR linux/arch/x86/kernel/asm-offsets

   1// SPDX-License-Identifier: GPL-2.0
   2#ifndef __LINUX_KBUILD_H
   3# error "Please do not build this file directly, build asm-offsets.c instead"
   4#endif
   5
   6#include <asm/ucontext.h>
   7
   8#define __SYSCALL_I386(nr, sym, qual) [nr] = 1,
   9static char syscalls[] = {
  10#include <asm/syscalls_32.h>
  11};
  12
  13/* workaround for a warning with -Wmissing-prototypes */
  14void foo(void);
  15
  16void foo(void)
  17{
  18        OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
  19        OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);
  20        OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);
  21        OFFSET(CPUINFO_x86_stepping, cpuinfo_x86, x86_stepping);
  22        OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);
  23        OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);
  24        OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);
  25        BLANK();
  26
  27        OFFSET(PT_EBX, pt_regs, bx);
  28        OFFSET(PT_ECX, pt_regs, cx);
  29        OFFSET(PT_EDX, pt_regs, dx);
  30        OFFSET(PT_ESI, pt_regs, si);
  31        OFFSET(PT_EDI, pt_regs, di);
  32        OFFSET(PT_EBP, pt_regs, bp);
  33        OFFSET(PT_EAX, pt_regs, ax);
  34        OFFSET(PT_DS,  pt_regs, ds);
  35        OFFSET(PT_ES,  pt_regs, es);
  36        OFFSET(PT_FS,  pt_regs, fs);
  37        OFFSET(PT_GS,  pt_regs, gs);
  38        OFFSET(PT_ORIG_EAX, pt_regs, orig_ax);
  39        OFFSET(PT_EIP, pt_regs, ip);
  40        OFFSET(PT_CS,  pt_regs, cs);
  41        OFFSET(PT_EFLAGS, pt_regs, flags);
  42        OFFSET(PT_OLDESP, pt_regs, sp);
  43        OFFSET(PT_OLDSS,  pt_regs, ss);
  44        BLANK();
  45
  46        OFFSET(saved_context_gdt_desc, saved_context, gdt_desc);
  47        BLANK();
  48
  49        /*
  50         * Offset from the entry stack to task stack stored in TSS. Kernel entry
  51         * happens on the per-cpu entry-stack, and the asm code switches to the
  52         * task-stack pointer stored in x86_tss.sp1, which is a copy of
  53         * task->thread.sp0 where entry code can find it.
  54         */
  55        DEFINE(TSS_entry2task_stack,
  56               offsetof(struct cpu_entry_area, tss.x86_tss.sp1) -
  57               offsetofend(struct cpu_entry_area, entry_stack_page.stack));
  58
  59#ifdef CONFIG_STACKPROTECTOR
  60        BLANK();
  61        OFFSET(stack_canary_offset, stack_canary, canary);
  62#endif
  63
  64        BLANK();
  65        DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
  66        DEFINE(NR_syscalls, sizeof(syscalls));
  67}
  68