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

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  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 */
 53 

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