1/* 2 * This program is used to generate definitions needed by 3 * assembly language modules. 4 * 5 * We use the technique used in the OSF Mach kernel code: 6 * generate asm statements containing #defines, 7 * compile this file to assembler, and then extract the 8 * #defines from the assembly-language output. 9 */ 10 11#include <linux/stddef.h> 12#include <linux/sched.h> 13#include <linux/kernel_stat.h> 14#include <linux/ptrace.h> 15#include <linux/hardirq.h> 16#include <asm/bootinfo.h> 17#include <asm/irq.h> 18#include <asm/irqnode.h> 19#include <asm/thread_info.h> 20 21#define DEFINE(sym, val) \ 22 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 23 24#define BLANK() asm volatile("\n->" : : ) 25 26int main(void) 27{ 28 /* offsets into the task struct */ 29 DEFINE(TASK_STATE, offsetof(struct task_struct, state)); 30 DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags)); 31 DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace)); 32 DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked)); 33 DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); 34 DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack)); 35 DEFINE(TASK_MM, offsetof(struct task_struct, mm)); 36 DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); 37 38 /* offsets into the kernel_stat struct */ 39 DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs)); 40 41 /* offsets into the irq_cpustat_t struct */ 42 DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); 43 44 /* offsets into the thread struct */ 45 DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); 46 DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); 47 DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); 48 DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); 49 DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); 50 DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); 51 DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); 52 DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); 53 DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); 54 55 /* offsets into the pt_regs */ 56 DEFINE(PT_D0, offsetof(struct pt_regs, d0)); 57 DEFINE(PT_ORIG_D0, offsetof(struct pt_regs, orig_d0)); 58 DEFINE(PT_D1, offsetof(struct pt_regs, d1)); 59 DEFINE(PT_D2, offsetof(struct pt_regs, d2)); 60 DEFINE(PT_D3, offsetof(struct pt_regs, d3)); 61 DEFINE(PT_D4, offsetof(struct pt_regs, d4)); 62 DEFINE(PT_D5, offsetof(struct pt_regs, d5)); 63 DEFINE(PT_A0, offsetof(struct pt_regs, a0)); 64 DEFINE(PT_A1, offsetof(struct pt_regs, a1)); 65 DEFINE(PT_A2, offsetof(struct pt_regs, a2)); 66 DEFINE(PT_PC, offsetof(struct pt_regs, pc)); 67 DEFINE(PT_SR, offsetof(struct pt_regs, sr)); 68 69#ifdef CONFIG_COLDFIRE 70 /* bitfields are a bit difficult */ 71 DEFINE(PT_FORMATVEC, offsetof(struct pt_regs, sr) - 2); 72#else 73 /* bitfields are a bit difficult */ 74 DEFINE(PT_VECTOR, offsetof(struct pt_regs, pc) + 4); 75 /* offsets into the irq_handler struct */ 76 DEFINE(IRQ_HANDLER, offsetof(struct irq_node, handler)); 77 DEFINE(IRQ_DEVID, offsetof(struct irq_node, dev_id)); 78 DEFINE(IRQ_NEXT, offsetof(struct irq_node, next)); 79#endif 80 81 /* offsets into the kernel_stat struct */ 82 DEFINE(STAT_IRQ, offsetof(struct kernel_stat, irqs)); 83 84 /* signal defines */ 85 DEFINE(SIGSEGV, SIGSEGV); 86 DEFINE(SEGV_MAPERR, SEGV_MAPERR); 87 DEFINE(SIGTRAP, SIGTRAP); 88 DEFINE(TRAP_TRACE, TRAP_TRACE); 89 90 DEFINE(PT_PTRACED, PT_PTRACED); 91 DEFINE(PT_DTRACE, PT_DTRACE); 92 93 DEFINE(THREAD_SIZE, THREAD_SIZE); 94 95 /* Offsets in thread_info structure */ 96 DEFINE(TI_TASK, offsetof(struct thread_info, task)); 97 DEFINE(TI_EXECDOMAIN, offsetof(struct thread_info, exec_domain)); 98 DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); 99 DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); 100 101 return 0; 102} 103