1 /* 2 * arch/xtensa/kernel/asm-offsets.c 3 * 4 * Generates definitions from c-type structures used by assembly sources. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 * 10 * Copyright (C) 2005 Tensilica Inc. 11 * 12 * Chris Zankel <chris@zankel.net> 13 */ 14 15 #include <asm/processor.h> 16 17 #include <linux/types.h> 18 #include <linux/sched.h> 19 #include <linux/stddef.h> 20 #include <linux/thread_info.h> 21 #include <linux/ptrace.h> 22 #include <asm/ptrace.h> 23 #include <asm/processor.h> 24 #include <asm/uaccess.h> 25 26 #define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 27 #define BLANK() asm volatile("\n->" : : ) 28 29 int main(void) 30 { 31 /* struct pt_regs */ 32 DEFINE(PT_PC, offsetof (struct pt_regs, pc)); 33 DEFINE(PT_PS, offsetof (struct pt_regs, ps)); 34 DEFINE(PT_DEPC, offsetof (struct pt_regs, depc)); 35 DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause)); 36 DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr)); 37 DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause)); 38 DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask)); 39 DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg)); 40 DEFINE(PT_LEND, offsetof (struct pt_regs, lend)); 41 DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount)); 42 DEFINE(PT_SAR, offsetof (struct pt_regs, sar)); 43 DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall)); 44 DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0])); 45 DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0])); 46 DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1])); 47 DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2])); 48 DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3])); 49 DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4])); 50 DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5])); 51 DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6])); 52 DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7])); 53 DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8])); 54 DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9])); 55 DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10])); 56 DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11])); 57 DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12])); 58 DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13])); 59 DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14])); 60 DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15])); 61 DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase)); 62 DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart)); 63 DEFINE(PT_SIZE, sizeof(struct pt_regs)); 64 DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS])); 65 DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS])); 66 BLANK(); 67 68 /* struct task_struct */ 69 DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace)); 70 DEFINE(TASK_MM, offsetof (struct task_struct, mm)); 71 DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm)); 72 DEFINE(TASK_PID, offsetof (struct task_struct, pid)); 73 DEFINE(TASK_THREAD, offsetof (struct task_struct, thread)); 74 DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, thread_info)); 75 DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct)); 76 BLANK(); 77 78 /* struct thread_info (offset from start_struct) */ 79 DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra)); 80 DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp)); 81 DEFINE(THREAD_CP_SAVE, offsetof (struct task_struct, thread.cp_save)); 82 DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, thread.current_ds)); 83 BLANK(); 84 85 /* struct mm_struct */ 86 DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users)); 87 DEFINE(MM_PGD, offsetof (struct mm_struct, pgd)); 88 DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context)); 89 BLANK(); 90 DEFINE(PT_SINGLESTEP_BIT, PT_SINGLESTEP_BIT); 91 return 0; 92 } 93 94 95