| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 1995-2003 Russell King |
| 3 | * 2001-2002 Keith Owens |
| 4 | * |
| 5 | * Generate definitions needed by assembly language modules. |
| 6 | * This code generates raw asm output which is post-processed to extract |
| 7 | * and format the required data. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/mm.h> |
| 15 | #include <asm/mach/arch.h> |
| 16 | #include <asm/thread_info.h> |
| 17 | #include <asm/memory.h> |
| 18 | |
| 19 | /* |
| 20 | * Make sure that the compiler and target are compatible. |
| 21 | */ |
| 22 | #if defined(__APCS_26__) |
| 23 | #error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32 |
| 24 | #endif |
| 25 | /* |
| 26 | * GCC 2.95.1, 2.95.2: ignores register clobber list in asm(). |
| 27 | * GCC 3.0, 3.1: general bad code generation. |
| 28 | * GCC 3.2.0: incorrect function argument offset calculation. |
| 29 | * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c |
| 30 | * (http://gcc.gnu.org/PR8896) and incorrect structure |
| 31 | * initialisation in fs/jffs2/erase.c |
| 32 | */ |
| 33 | #if __GNUC__ < 2 || \ |
| 34 | (__GNUC__ == 2 && __GNUC_MINOR__ < 95) || \ |
| 35 | (__GNUC__ == 2 && __GNUC_MINOR__ == 95 && __GNUC_PATCHLEVEL__ != 0 && \ |
| 36 | __GNUC_PATCHLEVEL__ < 3) || \ |
| 37 | (__GNUC__ == 3 && __GNUC_MINOR__ < 3) |
| 38 | #error Your compiler is too buggy; it is known to miscompile kernels. |
| 39 | #error Known good compilers: 2.95.3, 2.95.4, 2.96, 3.3 |
| 40 | #endif |
| 41 | |
| 42 | /* Use marker if you need to separate the values later */ |
| 43 | |
| 44 | #define DEFINE(sym, val) \ |
| 45 | asm volatile("\n->" #sym " %0 " #val : : "i" (val)) |
| 46 | |
| 47 | #define BLANK() asm volatile("\n->" : : ) |
| 48 | |
| 49 | int main(void) |
| 50 | { |
| 51 | DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); |
| 52 | BLANK(); |
| 53 | DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); |
| 54 | DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); |
| 55 | DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit)); |
| 56 | DEFINE(TI_TASK, offsetof(struct thread_info, task)); |
| 57 | DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain)); |
| 58 | DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); |
| 59 | DEFINE(TI_CPU_DOMAIN, offsetof(struct thread_info, cpu_domain)); |
| 60 | DEFINE(TI_CPU_SAVE, offsetof(struct thread_info, cpu_context)); |
| 61 | DEFINE(TI_USED_CP, offsetof(struct thread_info, used_cp)); |
| 62 | DEFINE(TI_TP_VALUE, offsetof(struct thread_info, tp_value)); |
| 63 | DEFINE(TI_FPSTATE, offsetof(struct thread_info, fpstate)); |
| 64 | DEFINE(TI_VFPSTATE, offsetof(struct thread_info, vfpstate)); |
| 65 | DEFINE(TI_IWMMXT_STATE, (offsetof(struct thread_info, fpstate)+4)&~7); |
| 66 | BLANK(); |
| 67 | #if __LINUX_ARM_ARCH__ >= 6 |
| 68 | DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id)); |
| 69 | BLANK(); |
| 70 | #endif |
| 71 | DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm)); |
| 72 | DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags)); |
| 73 | BLANK(); |
| 74 | DEFINE(VM_EXEC, VM_EXEC); |
| 75 | BLANK(); |
| 76 | DEFINE(PAGE_SZ, PAGE_SIZE); |
| 77 | DEFINE(VIRT_OFFSET, PAGE_OFFSET); |
| 78 | BLANK(); |
| 79 | DEFINE(SYS_ERROR0, 0x9f0000); |
| 80 | BLANK(); |
| 81 | DEFINE(SIZEOF_MACHINE_DESC, sizeof(struct machine_desc)); |
| 82 | return 0; |
| 83 | } |