diff options
Diffstat (limited to 'arch/x86/kernel/asm-offsets_32.c')
| -rw-r--r-- | arch/x86/kernel/asm-offsets_32.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c new file mode 100644 index 000000000000..8029742c0fc1 --- /dev/null +++ b/arch/x86/kernel/asm-offsets_32.c @@ -0,0 +1,147 @@ +/* + * 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 <linux/crypto.h> +#include <linux/sched.h> +#include <linux/signal.h> +#include <linux/personality.h> +#include <linux/suspend.h> +#include <asm/ucontext.h> +#include "sigframe_32.h" +#include <asm/pgtable.h> +#include <asm/fixmap.h> +#include <asm/processor.h> +#include <asm/thread_info.h> +#include <asm/elf.h> + +#include <xen/interface/xen.h> + +#ifdef CONFIG_LGUEST_GUEST +#include <linux/lguest.h> +#include "../../../drivers/lguest/lg.h" +#endif + +#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)); + +/* workaround for a warning with -Wmissing-prototypes */ +void foo(void); + +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_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); + OFFSET(TI_cpu, thread_info, cpu); + BLANK(); + + OFFSET(GDS_size, Xgt_desc_struct, size); + OFFSET(GDS_address, Xgt_desc_struct, address); + OFFSET(GDS_pad, Xgt_desc_struct, pad); + BLANK(); + + OFFSET(PT_EBX, pt_regs, ebx); + OFFSET(PT_ECX, pt_regs, ecx); + OFFSET(PT_EDX, pt_regs, edx); + OFFSET(PT_ESI, pt_regs, esi); + OFFSET(PT_EDI, pt_regs, edi); + OFFSET(PT_EBP, pt_regs, ebp); + OFFSET(PT_EAX, pt_regs, eax); + OFFSET(PT_DS, pt_regs, xds); + OFFSET(PT_ES, pt_regs, xes); + OFFSET(PT_FS, pt_regs, xfs); + OFFSET(PT_ORIG_EAX, pt_regs, orig_eax); + OFFSET(PT_EIP, pt_regs, eip); + OFFSET(PT_CS, pt_regs, xcs); + OFFSET(PT_EFLAGS, pt_regs, eflags); + OFFSET(PT_OLDESP, pt_regs, esp); + OFFSET(PT_OLDSS, pt_regs, xss); + 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, x86_tss.esp0) - + sizeof(struct tss_struct)); + + DEFINE(PAGE_SIZE_asm, PAGE_SIZE); + DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT); + DEFINE(PTRS_PER_PTE, PTRS_PER_PTE); + DEFINE(PTRS_PER_PMD, PTRS_PER_PMD); + DEFINE(PTRS_PER_PGD, PTRS_PER_PGD); + + DEFINE(VDSO_PRELINK_asm, VDSO_PRELINK); + + OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx); + +#ifdef CONFIG_PARAVIRT + BLANK(); + OFFSET(PARAVIRT_enabled, paravirt_ops, paravirt_enabled); + OFFSET(PARAVIRT_irq_disable, paravirt_ops, irq_disable); + OFFSET(PARAVIRT_irq_enable, paravirt_ops, irq_enable); + OFFSET(PARAVIRT_irq_enable_sysexit, paravirt_ops, irq_enable_sysexit); + OFFSET(PARAVIRT_iret, paravirt_ops, iret); + OFFSET(PARAVIRT_read_cr0, paravirt_ops, read_cr0); +#endif + +#ifdef CONFIG_XEN + BLANK(); + OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask); + OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending); +#endif + +#ifdef CONFIG_LGUEST_GUEST + BLANK(); + OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled); + OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc); + OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc); + OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3); + OFFSET(LGUEST_PAGES_host_sp, lguest_pages, state.host_sp); + OFFSET(LGUEST_PAGES_guest_gdt_desc, lguest_pages,state.guest_gdt_desc); + OFFSET(LGUEST_PAGES_guest_idt_desc, lguest_pages,state.guest_idt_desc); + OFFSET(LGUEST_PAGES_guest_gdt, lguest_pages, state.guest_gdt); + OFFSET(LGUEST_PAGES_regs_trapnum, lguest_pages, regs.trapnum); + OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode); + OFFSET(LGUEST_PAGES_regs, lguest_pages, regs); +#endif +} |