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));
+}