925c8a1a8c
Generate pt_regs S_xx offsets from the structure itself instead of #defining them. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
104 lines
4.0 KiB
C
104 lines
4.0 KiB
C
/*
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* Copyright (C) 1995-2003 Russell King
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* 2001-2002 Keith Owens
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*
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* Generate definitions needed by assembly language modules.
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* This code generates raw asm output which is post-processed to extract
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* and format the required data.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <asm/mach/arch.h>
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#include <asm/thread_info.h>
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#include <asm/memory.h>
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/*
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* Make sure that the compiler and target are compatible.
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*/
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#if defined(__APCS_26__)
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#error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
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#endif
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/*
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* GCC 2.95.1, 2.95.2: ignores register clobber list in asm().
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* GCC 3.0, 3.1: general bad code generation.
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* GCC 3.2.0: incorrect function argument offset calculation.
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* GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
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* (http://gcc.gnu.org/PR8896) and incorrect structure
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* initialisation in fs/jffs2/erase.c
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*/
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#if __GNUC__ < 2 || \
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(__GNUC__ == 2 && __GNUC_MINOR__ < 95) || \
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(__GNUC__ == 2 && __GNUC_MINOR__ == 95 && __GNUC_PATCHLEVEL__ != 0 && \
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__GNUC_PATCHLEVEL__ < 3) || \
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(__GNUC__ == 3 && __GNUC_MINOR__ < 3)
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#error Your compiler is too buggy; it is known to miscompile kernels.
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#error Known good compilers: 2.95.3, 2.95.4, 2.96, 3.3
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#endif
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/* Use marker if you need to separate the values later */
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#define DEFINE(sym, val) \
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asm volatile("\n->" #sym " %0 " #val : : "i" (val))
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#define BLANK() asm volatile("\n->" : : )
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int main(void)
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{
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DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
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BLANK();
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DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
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DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
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DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit));
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DEFINE(TI_TASK, offsetof(struct thread_info, task));
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DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain));
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DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
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DEFINE(TI_CPU_DOMAIN, offsetof(struct thread_info, cpu_domain));
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DEFINE(TI_CPU_SAVE, offsetof(struct thread_info, cpu_context));
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DEFINE(TI_USED_CP, offsetof(struct thread_info, used_cp));
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DEFINE(TI_TP_VALUE, offsetof(struct thread_info, tp_value));
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DEFINE(TI_FPSTATE, offsetof(struct thread_info, fpstate));
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DEFINE(TI_VFPSTATE, offsetof(struct thread_info, vfpstate));
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DEFINE(TI_IWMMXT_STATE, (offsetof(struct thread_info, fpstate)+4)&~7);
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BLANK();
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DEFINE(S_R0, offsetof(struct pt_regs, ARM_r0));
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DEFINE(S_R1, offsetof(struct pt_regs, ARM_r1));
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DEFINE(S_R2, offsetof(struct pt_regs, ARM_r2));
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DEFINE(S_R3, offsetof(struct pt_regs, ARM_r3));
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DEFINE(S_R4, offsetof(struct pt_regs, ARM_r4));
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DEFINE(S_R5, offsetof(struct pt_regs, ARM_r5));
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DEFINE(S_R6, offsetof(struct pt_regs, ARM_r6));
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DEFINE(S_R7, offsetof(struct pt_regs, ARM_r7));
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DEFINE(S_R8, offsetof(struct pt_regs, ARM_r8));
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DEFINE(S_R9, offsetof(struct pt_regs, ARM_r9));
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DEFINE(S_R10, offsetof(struct pt_regs, ARM_r10));
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DEFINE(S_FP, offsetof(struct pt_regs, ARM_fp));
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DEFINE(S_IP, offsetof(struct pt_regs, ARM_ip));
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DEFINE(S_SP, offsetof(struct pt_regs, ARM_sp));
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DEFINE(S_LR, offsetof(struct pt_regs, ARM_lr));
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DEFINE(S_PC, offsetof(struct pt_regs, ARM_pc));
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DEFINE(S_PSR, offsetof(struct pt_regs, ARM_cpsr));
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DEFINE(S_OLD_R0, offsetof(struct pt_regs, ARM_ORIG_r0));
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DEFINE(S_FRAME_SIZE, sizeof(struct pt_regs));
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BLANK();
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#if __LINUX_ARM_ARCH__ >= 6
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DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id));
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BLANK();
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#endif
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DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
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DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags));
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BLANK();
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DEFINE(VM_EXEC, VM_EXEC);
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BLANK();
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DEFINE(PAGE_SZ, PAGE_SIZE);
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DEFINE(VIRT_OFFSET, PAGE_OFFSET);
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BLANK();
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DEFINE(SYS_ERROR0, 0x9f0000);
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BLANK();
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DEFINE(SIZEOF_MACHINE_DESC, sizeof(struct machine_desc));
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return 0;
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}
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