arch/arc/include/uapi/asm/ptrace.h

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * Amit Bhor, Sameer Dhavale: Codito Technologies 2004
   9  */
  10
  11 #ifndef _UAPI__ASM_ARC_PTRACE_H
  12 #define _UAPI__ASM_ARC_PTRACE_H
  13
  14 #define PTRACE_GET_THREAD_AREA  25
  15
  16 #ifndef __ASSEMBLY__
  17 /*
  18  * Userspace ABI: Register state needed by
  19  *  -ptrace (gdbserver)
  20  *  -sigcontext (SA_SIGNINFO signal frame)
  21  *
  22  * This is to decouple pt_regs from user-space ABI, to be able to change it
  23  * w/o affecting the ABI.
  24  *
  25  * The intermediate pad,pad2 are relics of initial layout based on pt_regs
  26  * for optimizations when copying pt_regs to/from user_regs_struct.
  27  * We no longer need them, but can't be changed as they are part of ABI now.
  28  *
  29  * Also, sigcontext only care about the scratch regs as that is what we really
  30  * save/restore for signal handling. However gdb also uses the same struct
  31  * hence callee regs need to be in there too.
  32 */
  33 struct user_regs_struct {
  34
  35         unsigned long pad;
  36         struct {
  37                 unsigned long bta, lp_start, lp_end, lp_count;
  38                 unsigned long status32, ret, blink, fp, gp;
  39                 unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
  40                 unsigned long sp;
  41         } scratch;
  42         unsigned long pad2;
  43         struct {
  44                 unsigned long r25, r24, r23, r22, r21, r20;
  45                 unsigned long r19, r18, r17, r16, r15, r14, r13;
  46         } callee;
  47         unsigned long efa;      /* break pt addr, for break points in delay slots */
  48         unsigned long stop_pc;  /* give dbg stop_pc after ensuring brkpt trap */
  49 };
  50 #endif /* !__ASSEMBLY__ */
  51
  52 #endif /* _UAPI__ASM_ARC_PTRACE_H */