diff options
Diffstat (limited to 'arch/x86/kernel/asm-offsets_32.c')
-rw-r--r-- | arch/x86/kernel/asm-offsets_32.c | 58 |
1 files changed, 58 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 000000000..2b411cd00 --- /dev/null +++ b/arch/x86/kernel/asm-offsets_32.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0 +#ifndef __LINUX_KBUILD_H +# error "Please do not build this file directly, build asm-offsets.c instead" +#endif + +#include <linux/efi.h> + +#include <asm/ucontext.h> + +/* workaround for a warning with -Wmissing-prototypes */ +void foo(void); + +void foo(void) +{ + 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_stepping, cpuinfo_x86, x86_stepping); + 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(PT_EBX, pt_regs, bx); + OFFSET(PT_ECX, pt_regs, cx); + OFFSET(PT_EDX, pt_regs, dx); + OFFSET(PT_ESI, pt_regs, si); + OFFSET(PT_EDI, pt_regs, di); + OFFSET(PT_EBP, pt_regs, bp); + OFFSET(PT_EAX, pt_regs, ax); + OFFSET(PT_DS, pt_regs, ds); + OFFSET(PT_ES, pt_regs, es); + OFFSET(PT_FS, pt_regs, fs); + OFFSET(PT_GS, pt_regs, gs); + OFFSET(PT_ORIG_EAX, pt_regs, orig_ax); + OFFSET(PT_EIP, pt_regs, ip); + OFFSET(PT_CS, pt_regs, cs); + OFFSET(PT_EFLAGS, pt_regs, flags); + OFFSET(PT_OLDESP, pt_regs, sp); + OFFSET(PT_OLDSS, pt_regs, ss); + BLANK(); + + OFFSET(saved_context_gdt_desc, saved_context, gdt_desc); + BLANK(); + + /* + * Offset from the entry stack to task stack stored in TSS. Kernel entry + * happens on the per-cpu entry-stack, and the asm code switches to the + * task-stack pointer stored in x86_tss.sp1, which is a copy of + * task->thread.sp0 where entry code can find it. + */ + DEFINE(TSS_entry2task_stack, + offsetof(struct cpu_entry_area, tss.x86_tss.sp1) - + offsetofend(struct cpu_entry_area, entry_stack_page.stack)); + + BLANK(); + DEFINE(EFI_svam, offsetof(efi_runtime_services_t, set_virtual_address_map)); +} |