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

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Amit Bhor, Sameer Dhavale: Codito Technologies 2004
  10  */
  11
  12 #ifndef _UAPI__ASM_ARC_PTRACE_H
  13 #define _UAPI__ASM_ARC_PTRACE_H
  14
  15 #define PTRACE_GET_THREAD_AREA  25
  16
  17 #ifndef __ASSEMBLY__
  18 /*
  19  * Userspace ABI: Register state needed by
  20  *  -ptrace (gdbserver)
  21  *  -sigcontext (SA_SIGNINFO signal frame)
  22  *
  23  * This is to decouple pt_regs from user-space ABI, to be able to change it
  24  * w/o affecting the ABI.
  25  *
  26  * The intermediate pad,pad2 are relics of initial layout based on pt_regs
  27  * for optimizations when copying pt_regs to/from user_regs_struct.
  28  * We no longer need them, but can't be changed as they are part of ABI now.
  29  *
  30  * Also, sigcontext only care about the scratch regs as that is what we really
  31  * save/restore for signal handling. However gdb also uses the same struct
  32  * hence callee regs need to be in there too.
  33 */
  34 struct user_regs_struct {
  35
  36         unsigned long pad;
  37         struct {
  38                 unsigned long bta, lp_start, lp_end, lp_count;
  39                 unsigned long status32, ret, blink, fp, gp;
  40                 unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
  41                 unsigned long sp;
  42         } scratch;
  43         unsigned long pad2;
  44         struct {
  45                 unsigned long r25, r24, r23, r22, r21, r20;
  46                 unsigned long r19, r18, r17, r16, r15, r14, r13;
  47         } callee;
  48         unsigned long efa;      /* break pt addr, for break points in delay slots */
  49         unsigned long stop_pc;  /* give dbg stop_pc after ensuring brkpt trap */
  50 };
  51
  52 struct user_regs_arcv2 {
  53         unsigned long r30, r58, r59;
  54 };
  55
  56 #endif /* !__ASSEMBLY__ */
  57
  58 #endif /* _UAPI__ASM_ARC_PTRACE_H */