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 arch_kgdb_breakpoint(void)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