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*/
34struct 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
52struct user_regs_arcv2 {
53	unsigned long r30, r58, r59;
54};
55
56#endif /* !__ASSEMBLY__ */
57
58#endif /* _UAPI__ASM_ARC_PTRACE_H */
59