LXR linux/arch/hexagon/include/asm/kgdb.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * arch/hexagon/include/asm/kgdb.h - Hexagon KGDB Support
   4 *
   5 * Copyright (c) 2011, The Linux Foundation. All rights reserved.
   6 */
   7
   8#ifndef __HEXAGON_KGDB_H__
   9#define __HEXAGON_KGDB_H__
  10
  11#define BREAK_INSTR_SIZE 4
  12#define CACHE_FLUSH_IS_SAFE   1
  13#define BUFMAX       ((NUMREGBYTES * 2) + 512)
  14
  15static inline void arch_kgdb_breakpoint(void)
  16{
  17        asm("trap0(#0xDB)");
  18}
  19
  20/* Registers:
  21 * 32 gpr + sa0/1 + lc0/1 + m0/1 + gp + ugp + pred + pc = 42 total.
  22 * vm regs = psp+elr+est+badva = 4
  23 * syscall+restart = 2 more
  24 * also add cs0/1 = 2
  25 * so 48 = 42 + 4 + 2 + 2
  26 */
  27#define DBG_USER_REGS 42
  28#define DBG_MAX_REG_NUM (DBG_USER_REGS + 8)
  29#define NUMREGBYTES  (DBG_MAX_REG_NUM*4)
  30
  31#endif /* __HEXAGON_KGDB_H__ */
  32