1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * kgdb support for ARC
 4 *
 5 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
 
 
 
 
 6 */
 7
 8#ifndef __ARC_KGDB_H__
 9#define __ARC_KGDB_H__
10
11#ifdef CONFIG_KGDB
12
13#include <asm/ptrace.h>
14
15/* to ensure compatibility with Linux 2.6.35, we don't implement the get/set
16 * register API yet */
17#undef DBG_MAX_REG_NUM
18
19#define GDB_MAX_REGS		87
20
21#define BREAK_INSTR_SIZE	2
22#define CACHE_FLUSH_IS_SAFE	1
23#define NUMREGBYTES		(GDB_MAX_REGS * 4)
24#define BUFMAX			2048
25
26static inline void arch_kgdb_breakpoint(void)
27{
28	__asm__ __volatile__ ("trap_s	0x4\n");
29}
30
31extern void kgdb_trap(struct pt_regs *regs);
32
33/* This is the numbering of registers according to the GDB. See GDB's
34 * arc-tdep.h for details.
35 *
36 * Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */
37enum arc_linux_regnums {
38	_R0		= 0,
39	_R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13,
40	_R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24,
41	_R25, _R26,
42	_FP		= 27,
43	__SP		= 28,
44	_R30		= 30,
45	_BLINK		= 31,
46	_LP_COUNT	= 60,
47	_STOP_PC	= 64,
48	_RET		= 64,
49	_LP_START	= 65,
50	_LP_END		= 66,
51	_STATUS32	= 67,
52	_ECR		= 76,
53	_BTA		= 82,
54};
55
56#else
57#define kgdb_trap(regs)
58#endif
59
60#endif	/* __ARC_KGDB_H__ */

 
 1/*
 2 * kgdb support for ARC
 3 *
 4 * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 as
 8 * published by the Free Software Foundation.
 9 */
10
11#ifndef __ARC_KGDB_H__
12#define __ARC_KGDB_H__
13
14#ifdef CONFIG_KGDB
15
16#include <asm/ptrace.h>
17
18/* to ensure compatibility with Linux 2.6.35, we don't implement the get/set
19 * register API yet */
20#undef DBG_MAX_REG_NUM
21
22#define GDB_MAX_REGS		87
23
24#define BREAK_INSTR_SIZE	2
25#define CACHE_FLUSH_IS_SAFE	1
26#define NUMREGBYTES		(GDB_MAX_REGS * 4)
27#define BUFMAX			2048
28
29static inline void arch_kgdb_breakpoint(void)
30{
31	__asm__ __volatile__ ("trap_s	0x4\n");
32}
33
34extern void kgdb_trap(struct pt_regs *regs);
35
36/* This is the numbering of registers according to the GDB. See GDB's
37 * arc-tdep.h for details.
38 *
39 * Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */
40enum arc_linux_regnums {
41	_R0		= 0,
42	_R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13,
43	_R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24,
44	_R25, _R26,
45	_FP		= 27,
46	__SP		= 28,
47	_R30		= 30,
48	_BLINK		= 31,
49	_LP_COUNT	= 60,
50	_STOP_PC	= 64,
51	_RET		= 64,
52	_LP_START	= 65,
53	_LP_END		= 66,
54	_STATUS32	= 67,
55	_ECR		= 76,
56	_BTA		= 82,
57};
58
59#else
60#define kgdb_trap(regs)
61#endif
62
63#endif	/* __ARC_KGDB_H__ */