arch/x86/kernel/asm-offsets_32.c

   1 /*
   2  * Generate definitions needed by assembly language modules.
   3  * This code generates raw asm output which is post-processed
   4  * to extract and format the required data.
   5  */
   6
   7 #include <linux/crypto.h>
   8 #include <linux/sched.h>
   9 #include <linux/signal.h>
  10 #include <linux/personality.h>
  11 #include <linux/suspend.h>
  12 #include <asm/ucontext.h>
  13 #include "sigframe_32.h"
  14 #include <asm/pgtable.h>
  15 #include <asm/fixmap.h>
  16 #include <asm/processor.h>
  17 #include <asm/thread_info.h>
  18 #include <asm/elf.h>
  19
  20 #include <xen/interface/xen.h>
  21
  22 #ifdef CONFIG_LGUEST_GUEST
  23 #include <linux/lguest.h>
  24 #include "../../../drivers/lguest/lg.h"
  25 #endif
  26
  27 #define DEFINE(sym, val) \
  28         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  29
  30 #define BLANK() asm volatile("\n->" : : )
  31
  32 #define OFFSET(sym, str, mem) \
  33         DEFINE(sym, offsetof(struct str, mem));
  34
  35 /* workaround for a warning with -Wmissing-prototypes */
  36 void foo(void);
  37
  38 void foo(void)
  39 {
  40         OFFSET(SIGCONTEXT_eax, sigcontext, eax);
  41         OFFSET(SIGCONTEXT_ebx, sigcontext, ebx);
  42         OFFSET(SIGCONTEXT_ecx, sigcontext, ecx);
  43         OFFSET(SIGCONTEXT_edx, sigcontext, edx);
  44         OFFSET(SIGCONTEXT_esi, sigcontext, esi);
  45         OFFSET(SIGCONTEXT_edi, sigcontext, edi);
  46         OFFSET(SIGCONTEXT_ebp, sigcontext, ebp);
  47         OFFSET(SIGCONTEXT_esp, sigcontext, esp);
  48         OFFSET(SIGCONTEXT_eip, sigcontext, eip);
  49         BLANK();
  50
  51         OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
  52         OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);
  53         OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);
  54         OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask);
  55         OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math);
  56         OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);
  57         OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);
  58         OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);
  59         BLANK();
  60
  61         OFFSET(TI_task, thread_info, task);
  62         OFFSET(TI_exec_domain, thread_info, exec_domain);
  63         OFFSET(TI_flags, thread_info, flags);
  64         OFFSET(TI_status, thread_info, status);
  65         OFFSET(TI_preempt_count, thread_info, preempt_count);
  66         OFFSET(TI_addr_limit, thread_info, addr_limit);
  67         OFFSET(TI_restart_block, thread_info, restart_block);
  68         OFFSET(TI_sysenter_return, thread_info, sysenter_return);
  69         OFFSET(TI_cpu, thread_info, cpu);
  70         BLANK();
  71
  72         OFFSET(GDS_size, Xgt_desc_struct, size);
  73         OFFSET(GDS_address, Xgt_desc_struct, address);
  74         OFFSET(GDS_pad, Xgt_desc_struct, pad);
  75         BLANK();
  76
  77         OFFSET(PT_EBX, pt_regs, ebx);
  78         OFFSET(PT_ECX, pt_regs, ecx);
  79         OFFSET(PT_EDX, pt_regs, edx);
  80         OFFSET(PT_ESI, pt_regs, esi);
  81         OFFSET(PT_EDI, pt_regs, edi);
  82         OFFSET(PT_EBP, pt_regs, ebp);
  83         OFFSET(PT_EAX, pt_regs, eax);
  84         OFFSET(PT_DS,  pt_regs, xds);
  85         OFFSET(PT_ES,  pt_regs, xes);
  86         OFFSET(PT_FS,  pt_regs, xfs);
  87         OFFSET(PT_ORIG_EAX, pt_regs, orig_eax);
  88         OFFSET(PT_EIP, pt_regs, eip);
  89         OFFSET(PT_CS,  pt_regs, xcs);
  90         OFFSET(PT_EFLAGS, pt_regs, eflags);
  91         OFFSET(PT_OLDESP, pt_regs, esp);
  92         OFFSET(PT_OLDSS,  pt_regs, xss);
  93         BLANK();
  94
  95         OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
  96         OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
  97         BLANK();
  98
  99         OFFSET(pbe_address, pbe, address);
 100         OFFSET(pbe_orig_address, pbe, orig_address);
 101         OFFSET(pbe_next, pbe, next);
 102
 103         /* Offset from the sysenter stack to tss.esp0 */
 104         DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, x86_tss.esp0) -
 105                  sizeof(struct tss_struct));
 106
 107         DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
 108         DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
 109         DEFINE(PTRS_PER_PTE, PTRS_PER_PTE);
 110         DEFINE(PTRS_PER_PMD, PTRS_PER_PMD);
 111         DEFINE(PTRS_PER_PGD, PTRS_PER_PGD);
 112
 113         DEFINE(VDSO_PRELINK_asm, VDSO_PRELINK);
 114
 115         OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
 116
 117 #ifdef CONFIG_PARAVIRT
 118         BLANK();
 119         OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled);
 120         OFFSET(PARAVIRT_PATCH_pv_cpu_ops, paravirt_patch_template, pv_cpu_ops);
 121         OFFSET(PARAVIRT_PATCH_pv_irq_ops, paravirt_patch_template, pv_irq_ops);
 122         OFFSET(PV_IRQ_irq_disable, pv_irq_ops, irq_disable);
 123         OFFSET(PV_IRQ_irq_enable, pv_irq_ops, irq_enable);
 124         OFFSET(PV_CPU_iret, pv_cpu_ops, iret);
 125         OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit);
 126         OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
 127 #endif
 128
 129 #ifdef CONFIG_XEN
 130         BLANK();
 131         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
 132         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
 133 #endif
 134
 135 #ifdef CONFIG_LGUEST_GUEST
 136         BLANK();
 137         OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled);
 138         OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc);
 139         OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc);
 140         OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3);
 141         OFFSET(LGUEST_PAGES_host_sp, lguest_pages, state.host_sp);
 142         OFFSET(LGUEST_PAGES_guest_gdt_desc, lguest_pages,state.guest_gdt_desc);
 143         OFFSET(LGUEST_PAGES_guest_idt_desc, lguest_pages,state.guest_idt_desc);
 144         OFFSET(LGUEST_PAGES_guest_gdt, lguest_pages, state.guest_gdt);
 145         OFFSET(LGUEST_PAGES_regs_trapnum, lguest_pages, regs.trapnum);
 146         OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode);
 147         OFFSET(LGUEST_PAGES_regs, lguest_pages, regs);
 148 #endif
 149 }