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/bootparam.h>
  19 #include <asm/elf.h>
  20
  21 #include <xen/interface/xen.h>
  22
  23 #ifdef CONFIG_LGUEST_GUEST
  24 #include <linux/lguest.h>
  25 #include "../../../drivers/lguest/lg.h"
  26 #endif
  27
  28 #define DEFINE(sym, val) \
  29         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  30
  31 #define BLANK() asm volatile("\n->" : : )
  32
  33 #define OFFSET(sym, str, mem) \
  34         DEFINE(sym, offsetof(struct str, mem));
  35
  36 /* workaround for a warning with -Wmissing-prototypes */
  37 void foo(void);
  38
  39 void foo(void)
  40 {
  41         OFFSET(IA32_SIGCONTEXT_eax, sigcontext, eax);
  42         OFFSET(IA32_SIGCONTEXT_ebx, sigcontext, ebx);
  43         OFFSET(IA32_SIGCONTEXT_ecx, sigcontext, ecx);
  44         OFFSET(IA32_SIGCONTEXT_edx, sigcontext, edx);
  45         OFFSET(IA32_SIGCONTEXT_esi, sigcontext, esi);
  46         OFFSET(IA32_SIGCONTEXT_edi, sigcontext, edi);
  47         OFFSET(IA32_SIGCONTEXT_ebp, sigcontext, ebp);
  48         OFFSET(IA32_SIGCONTEXT_esp, sigcontext, esp);
  49         OFFSET(IA32_SIGCONTEXT_eip, sigcontext, eip);
  50         BLANK();
  51
  52         OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
  53         OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);
  54         OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);
  55         OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask);
  56         OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math);
  57         OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);
  58         OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);
  59         OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);
  60         BLANK();
  61
  62         OFFSET(TI_task, thread_info, task);
  63         OFFSET(TI_exec_domain, thread_info, exec_domain);
  64         OFFSET(TI_flags, thread_info, flags);
  65         OFFSET(TI_status, thread_info, status);
  66         OFFSET(TI_preempt_count, thread_info, preempt_count);
  67         OFFSET(TI_addr_limit, thread_info, addr_limit);
  68         OFFSET(TI_restart_block, thread_info, restart_block);
  69         OFFSET(TI_sysenter_return, thread_info, sysenter_return);
  70         OFFSET(TI_cpu, thread_info, cpu);
  71         BLANK();
  72
  73         OFFSET(GDS_size, Xgt_desc_struct, size);
  74         OFFSET(GDS_address, Xgt_desc_struct, address);
  75         OFFSET(GDS_pad, Xgt_desc_struct, pad);
  76         BLANK();
  77
  78         OFFSET(PT_EBX, pt_regs, bx);
  79         OFFSET(PT_ECX, pt_regs, cx);
  80         OFFSET(PT_EDX, pt_regs, dx);
  81         OFFSET(PT_ESI, pt_regs, si);
  82         OFFSET(PT_EDI, pt_regs, di);
  83         OFFSET(PT_EBP, pt_regs, bp);
  84         OFFSET(PT_EAX, pt_regs, ax);
  85         OFFSET(PT_DS,  pt_regs, ds);
  86         OFFSET(PT_ES,  pt_regs, es);
  87         OFFSET(PT_FS,  pt_regs, fs);
  88         OFFSET(PT_ORIG_EAX, pt_regs, orig_ax);
  89         OFFSET(PT_EIP, pt_regs, ip);
  90         OFFSET(PT_CS,  pt_regs, cs);
  91         OFFSET(PT_EFLAGS, pt_regs, flags);
  92         OFFSET(PT_OLDESP, pt_regs, sp);
  93         OFFSET(PT_OLDSS,  pt_regs, ss);
  94         BLANK();
  95
  96         OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
  97         OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
  98         BLANK();
  99
 100         OFFSET(pbe_address, pbe, address);
 101         OFFSET(pbe_orig_address, pbe, orig_address);
 102         OFFSET(pbe_next, pbe, next);
 103
 104         /* Offset from the sysenter stack to tss.esp0 */
 105         DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, x86_tss.esp0) -
 106                  sizeof(struct tss_struct));
 107
 108         DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
 109         DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
 110         DEFINE(PTRS_PER_PTE, PTRS_PER_PTE);
 111         DEFINE(PTRS_PER_PMD, PTRS_PER_PMD);
 112         DEFINE(PTRS_PER_PGD, PTRS_PER_PGD);
 113
 114         OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
 115
 116 #ifdef CONFIG_PARAVIRT
 117         BLANK();
 118         OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled);
 119         OFFSET(PARAVIRT_PATCH_pv_cpu_ops, paravirt_patch_template, pv_cpu_ops);
 120         OFFSET(PARAVIRT_PATCH_pv_irq_ops, paravirt_patch_template, pv_irq_ops);
 121         OFFSET(PV_IRQ_irq_disable, pv_irq_ops, irq_disable);
 122         OFFSET(PV_IRQ_irq_enable, pv_irq_ops, irq_enable);
 123         OFFSET(PV_CPU_iret, pv_cpu_ops, iret);
 124         OFFSET(PV_CPU_irq_enable_syscall_ret, pv_cpu_ops, irq_enable_syscall_ret);
 125         OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
 126 #endif
 127
 128 #ifdef CONFIG_XEN
 129         BLANK();
 130         OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
 131         OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
 132 #endif
 133
 134 #ifdef CONFIG_LGUEST_GUEST
 135         BLANK();
 136         OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled);
 137         OFFSET(LGUEST_DATA_pgdir, lguest_data, pgdir);
 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
 150         BLANK();
 151         OFFSET(BP_scratch, boot_params, scratch);
 152         OFFSET(BP_loadflags, boot_params, hdr.loadflags);
 153         OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch);
 154         OFFSET(BP_version, boot_params, hdr.version);
 155 }