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.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 #include <linux/lguest.h> 24 #include "../../../drivers/lguest/lg.h" 25 26 #define DEFINE(sym, val) \ 27 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 28 29 #define BLANK() asm volatile("\n->" : : ) 30 31 #define OFFSET(sym, str, mem) \ 32 DEFINE(sym, offsetof(struct str, mem)); 33 34 /* workaround for a warning with -Wmissing-prototypes */ 35 void foo(void); 36 37 void foo(void) 38 { 39 OFFSET(IA32_SIGCONTEXT_ax, sigcontext, ax); 40 OFFSET(IA32_SIGCONTEXT_bx, sigcontext, bx); 41 OFFSET(IA32_SIGCONTEXT_cx, sigcontext, cx); 42 OFFSET(IA32_SIGCONTEXT_dx, sigcontext, dx); 43 OFFSET(IA32_SIGCONTEXT_si, sigcontext, si); 44 OFFSET(IA32_SIGCONTEXT_di, sigcontext, di); 45 OFFSET(IA32_SIGCONTEXT_bp, sigcontext, bp); 46 OFFSET(IA32_SIGCONTEXT_sp, sigcontext, sp); 47 OFFSET(IA32_SIGCONTEXT_ip, sigcontext, ip); 48 BLANK(); 49 50 OFFSET(CPUINFO_x86, cpuinfo_x86, x86); 51 OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor); 52 OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model); 53 OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask); 54 OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math); 55 OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level); 56 OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability); 57 OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id); 58 BLANK(); 59 60 OFFSET(TI_task, thread_info, task); 61 OFFSET(TI_exec_domain, thread_info, exec_domain); 62 OFFSET(TI_flags, thread_info, flags); 63 OFFSET(TI_status, thread_info, status); 64 OFFSET(TI_preempt_count, thread_info, preempt_count); 65 OFFSET(TI_addr_limit, thread_info, addr_limit); 66 OFFSET(TI_restart_block, thread_info, restart_block); 67 OFFSET(TI_sysenter_return, thread_info, sysenter_return); 68 OFFSET(TI_cpu, thread_info, cpu); 69 BLANK(); 70 71 OFFSET(GDS_size, desc_ptr, size); 72 OFFSET(GDS_address, desc_ptr, address); 73 BLANK(); 74 75 OFFSET(PT_EBX, pt_regs, bx); 76 OFFSET(PT_ECX, pt_regs, cx); 77 OFFSET(PT_EDX, pt_regs, dx); 78 OFFSET(PT_ESI, pt_regs, si); 79 OFFSET(PT_EDI, pt_regs, di); 80 OFFSET(PT_EBP, pt_regs, bp); 81 OFFSET(PT_EAX, pt_regs, ax); 82 OFFSET(PT_DS, pt_regs, ds); 83 OFFSET(PT_ES, pt_regs, es); 84 OFFSET(PT_FS, pt_regs, fs); 85 OFFSET(PT_ORIG_EAX, pt_regs, orig_ax); 86 OFFSET(PT_EIP, pt_regs, ip); 87 OFFSET(PT_CS, pt_regs, cs); 88 OFFSET(PT_EFLAGS, pt_regs, flags); 89 OFFSET(PT_OLDESP, pt_regs, sp); 90 OFFSET(PT_OLDSS, pt_regs, ss); 91 BLANK(); 92 93 OFFSET(EXEC_DOMAIN_handler, exec_domain, handler); 94 OFFSET(IA32_RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext); 95 BLANK(); 96 97 OFFSET(pbe_address, pbe, address); 98 OFFSET(pbe_orig_address, pbe, orig_address); 99 OFFSET(pbe_next, pbe, next); 100 101 /* Offset from the sysenter stack to tss.sp0 */ 102 DEFINE(TSS_sysenter_sp0, offsetof(struct tss_struct, x86_tss.sp0) - 103 sizeof(struct tss_struct)); 104 105 DEFINE(PAGE_SIZE_asm, PAGE_SIZE); 106 DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT); 107 DEFINE(PTRS_PER_PTE, PTRS_PER_PTE); 108 DEFINE(PTRS_PER_PMD, PTRS_PER_PMD); 109 DEFINE(PTRS_PER_PGD, PTRS_PER_PGD); 110 111 OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx); 112 113 #ifdef CONFIG_PARAVIRT 114 BLANK(); 115 OFFSET(PARAVIRT_enabled, pv_info, paravirt_enabled); 116 OFFSET(PARAVIRT_PATCH_pv_cpu_ops, paravirt_patch_template, pv_cpu_ops); 117 OFFSET(PARAVIRT_PATCH_pv_irq_ops, paravirt_patch_template, pv_irq_ops); 118 OFFSET(PV_IRQ_irq_disable, pv_irq_ops, irq_disable); 119 OFFSET(PV_IRQ_irq_enable, pv_irq_ops, irq_enable); 120 OFFSET(PV_CPU_iret, pv_cpu_ops, iret); 121 OFFSET(PV_CPU_irq_enable_syscall_ret, pv_cpu_ops, irq_enable_syscall_ret); 122 OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0); 123 #endif 124 125 #ifdef CONFIG_XEN 126 BLANK(); 127 OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask); 128 OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending); 129 #endif 130 131 #if defined(CONFIG_LGUEST) || defined(CONFIG_LGUEST_GUEST) || defined(CONFIG_LGUEST_MODULE) 132 BLANK(); 133 OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled); 134 OFFSET(LGUEST_DATA_pgdir, lguest_data, pgdir); 135 136 BLANK(); 137 OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc); 138 OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc); 139 OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3); 140 OFFSET(LGUEST_PAGES_host_sp, lguest_pages, state.host_sp); 141 OFFSET(LGUEST_PAGES_guest_gdt_desc, lguest_pages,state.guest_gdt_desc); 142 OFFSET(LGUEST_PAGES_guest_idt_desc, lguest_pages,state.guest_idt_desc); 143 OFFSET(LGUEST_PAGES_guest_gdt, lguest_pages, state.guest_gdt); 144 OFFSET(LGUEST_PAGES_regs_trapnum, lguest_pages, regs.trapnum); 145 OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode); 146 OFFSET(LGUEST_PAGES_regs, lguest_pages, regs); 147 #endif 148 149 BLANK(); 150 OFFSET(BP_scratch, boot_params, scratch); 151 OFFSET(BP_loadflags, boot_params, hdr.loadflags); 152 OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch); 153 OFFSET(BP_version, boot_params, hdr.version); 154 } 155