18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */
28c2ecf20Sopenharmony_ci/*
38c2ecf20Sopenharmony_ci * arch/hexagon/include/asm/kgdb.h - Hexagon KGDB Support
48c2ecf20Sopenharmony_ci *
58c2ecf20Sopenharmony_ci * Copyright (c) 2011, The Linux Foundation. All rights reserved.
68c2ecf20Sopenharmony_ci */
78c2ecf20Sopenharmony_ci
88c2ecf20Sopenharmony_ci#ifndef __HEXAGON_KGDB_H__
98c2ecf20Sopenharmony_ci#define __HEXAGON_KGDB_H__
108c2ecf20Sopenharmony_ci
118c2ecf20Sopenharmony_ci#define BREAK_INSTR_SIZE 4
128c2ecf20Sopenharmony_ci#define CACHE_FLUSH_IS_SAFE   1
138c2ecf20Sopenharmony_ci#define BUFMAX       ((NUMREGBYTES * 2) + 512)
148c2ecf20Sopenharmony_ci
158c2ecf20Sopenharmony_cistatic inline void arch_kgdb_breakpoint(void)
168c2ecf20Sopenharmony_ci{
178c2ecf20Sopenharmony_ci	asm("trap0(#0xDB)");
188c2ecf20Sopenharmony_ci}
198c2ecf20Sopenharmony_ci
208c2ecf20Sopenharmony_ci/* Registers:
218c2ecf20Sopenharmony_ci * 32 gpr + sa0/1 + lc0/1 + m0/1 + gp + ugp + pred + pc = 42 total.
228c2ecf20Sopenharmony_ci * vm regs = psp+elr+est+badva = 4
238c2ecf20Sopenharmony_ci * syscall+restart = 2 more
248c2ecf20Sopenharmony_ci * also add cs0/1 = 2
258c2ecf20Sopenharmony_ci * so 48 = 42 + 4 + 2 + 2
268c2ecf20Sopenharmony_ci */
278c2ecf20Sopenharmony_ci#define DBG_USER_REGS 42
288c2ecf20Sopenharmony_ci#define DBG_MAX_REG_NUM (DBG_USER_REGS + 8)
298c2ecf20Sopenharmony_ci#define NUMREGBYTES  (DBG_MAX_REG_NUM*4)
308c2ecf20Sopenharmony_ci
318c2ecf20Sopenharmony_ci#endif /* __HEXAGON_KGDB_H__ */
32