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*/
33struct user_regs_struct {
34
35	long pad;
36	struct {
37		long bta, lp_start, lp_end, lp_count;
38		long status32, ret, blink, fp, gp;
39		long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
40		long sp;
41	} scratch;
42	long pad2;
43	struct {
44		long r25, r24, r23, r22, r21, r20;
45		long r19, r18, r17, r16, r15, r14, r13;
46	} callee;
47	long efa;	/* break pt addr, for break points in delay slots */
48	long stop_pc;	/* give dbg stop_pc after ensuring brkpt trap */
49};
50#endif /* !__ASSEMBLY__ */
51
52#endif /* _UAPI__ASM_ARC_PTRACE_H */
53