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 */
59
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