/* * Generate definitions needed by assembly language modules. * This code generates raw asm output which is post-processed * to extract and format the required data. */ #include #include #include #include #include #include #include "sigframe.h" #include #include #include #include #define DEFINE(sym, val) \ asm volatile("\n->" #sym " %0 " #val : : "i" (val)) #define BLANK() asm volatile("\n->" : : ) #define OFFSET(sym, str, mem) \ DEFINE(sym, offsetof(struct str, mem)); void foo(void) { OFFSET(SIGCONTEXT_eax, sigcontext, eax); OFFSET(SIGCONTEXT_ebx, sigcontext, ebx); OFFSET(SIGCONTEXT_ecx, sigcontext, ecx); OFFSET(SIGCONTEXT_edx, sigcontext, edx); OFFSET(SIGCONTEXT_esi, sigcontext, esi); OFFSET(SIGCONTEXT_edi, sigcontext, edi); OFFSET(SIGCONTEXT_ebp, sigcontext, ebp); OFFSET(SIGCONTEXT_esp, sigcontext, esp); OFFSET(SIGCONTEXT_eip, sigcontext, eip); BLANK(); OFFSET(CPUINFO_x86, cpuinfo_x86, x86); OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor); OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model); OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask); OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math); OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level); OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability); OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id); BLANK(); OFFSET(TI_task, thread_info, task); OFFSET(TI_exec_domain, thread_info, exec_domain); OFFSET(TI_flags, thread_info, flags); OFFSET(TI_status, thread_info, status); OFFSET(TI_cpu, thread_info, cpu); OFFSET(TI_preempt_count, thread_info, preempt_count); OFFSET(TI_addr_limit, thread_info, addr_limit); OFFSET(TI_restart_block, thread_info, restart_block); OFFSET(TI_sysenter_return, thread_info, sysenter_return); BLANK(); OFFSET(GDS_size, Xgt_desc_struct, size); OFFSET(GDS_address, Xgt_desc_struct, address); OFFSET(GDS_pad, Xgt_desc_struct, pad); BLANK(); OFFSET(EXEC_DOMAIN_handler, exec_domain, handler); OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext); BLANK(); OFFSET(pbe_address, pbe, address); OFFSET(pbe_orig_address, pbe, orig_address); OFFSET(pbe_next, pbe, next); /* Offset from the sysenter stack to tss.esp0 */ DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, esp0) - sizeof(struct tss_struct)); DEFINE(PAGE_SIZE_asm, PAGE_SIZE); DEFINE(VDSO_PRELINK, VDSO_PRELINK); OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx); }