From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/arm/kernel/asm-offsets.c | 83 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 arch/arm/kernel/asm-offsets.c (limited to 'arch/arm/kernel/asm-offsets.c') 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 +#include +#include +#include +#include + +/* + * 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; +} -- cgit v1.2.3