1 files changed, 83 insertions, 0 deletions

diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
new file mode 100644
index 000000000000..99d43259ff89
--- /dev/null
+++ b/arch/arm/kernel/asm-offsets.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 1995-2003 Russell King
+ *               2001-2002 Keith Owens
+ *     
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed to extract
+ * and format the required data.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <asm/mach/arch.h>
+#include <asm/thread_info.h>
+#include <asm/memory.h>
+
+/*
+ * Make sure that the compiler and target are compatible.
+ */
+#if defined(__APCS_26__)
+#error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
+#endif
+/*
+ * GCC 2.95.1, 2.95.2: ignores register clobber list in asm().
+ * GCC 3.0, 3.1: general bad code generation.
+ * GCC 3.2.0: incorrect function argument offset calculation.
+ * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
+ *            (http://gcc.gnu.org/PR8896) and incorrect structure
+ *            initialisation in fs/jffs2/erase.c
+ */
+#if __GNUC__ < 2 || \
+   (__GNUC__ == 2 && __GNUC_MINOR__ < 95) || \
+   (__GNUC__ == 2 && __GNUC_MINOR__ == 95 && __GNUC_PATCHLEVEL__ != 0 && \
+                                             __GNUC_PATCHLEVEL__ < 3) || \
+   (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
+#error Your compiler is too buggy; it is known to miscompile kernels.
+#error    Known good compilers: 2.95.3, 2.95.4, 2.96, 3.3
+#endif
+
+/* Use marker if you need to separate the values later */
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+int main(void)
+{
+  DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
+  BLANK();
+  DEFINE(TI_FLAGS,              offsetof(struct thread_info, flags));
+  DEFINE(TI_PREEMPT,            offsetof(struct thread_info, preempt_count));
+  DEFINE(TI_ADDR_LIMIT,         offsetof(struct thread_info, addr_limit));
+  DEFINE(TI_TASK,               offsetof(struct thread_info, task));
+  DEFINE(TI_EXEC_DOMAIN,        offsetof(struct thread_info, exec_domain));
+  DEFINE(TI_CPU,                offsetof(struct thread_info, cpu));
+  DEFINE(TI_CPU_DOMAIN,         offsetof(struct thread_info, cpu_domain));
+  DEFINE(TI_CPU_SAVE,           offsetof(struct thread_info, cpu_context));
+  DEFINE(TI_USED_CP,            offsetof(struct thread_info, used_cp));
+  DEFINE(TI_TP_VALUE,           offsetof(struct thread_info, tp_value));
+  DEFINE(TI_FPSTATE,            offsetof(struct thread_info, fpstate));
+  DEFINE(TI_VFPSTATE,           offsetof(struct thread_info, vfpstate));
+  DEFINE(TI_IWMMXT_STATE,       (offsetof(struct thread_info, fpstate)+4)&~7);
+  BLANK();
+#if __LINUX_ARM_ARCH__ >= 6
+  DEFINE(MM_CONTEXT_ID,         offsetof(struct mm_struct, context.id));
+  BLANK();
+#endif
+  DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
+  DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
+  BLANK();
+  DEFINE(VM_EXEC,               VM_EXEC);
+  BLANK();
+  DEFINE(PAGE_SZ,               PAGE_SIZE);
+  DEFINE(VIRT_OFFSET,           PAGE_OFFSET);
+  BLANK();
+  DEFINE(SYS_ERROR0,            0x9f0000);
+  BLANK();
+  DEFINE(SIZEOF_MACHINE_DESC,   sizeof(struct machine_desc));
+  return 0; 
+}