1 /* 2 * arch/hexagon/include/asm/kgdb.h - Hexagon KGDB Support 3 * 4 * Copyright (c) 2011, The Linux Foundation. All rights reserved. 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 and 8 * only version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA. 19 */ 20 21 #ifndef __HEXAGON_KGDB_H__ 22 #define __HEXAGON_KGDB_H__ 23 24 #define BREAK_INSTR_SIZE 4 25 #define CACHE_FLUSH_IS_SAFE 1 26 #define BUFMAX ((NUMREGBYTES * 2) + 512) 27 28 static inline void arch_kgdb_breakpoint(void) 29 { 30 asm("trap0(#0xDB)"); 31 } 32 33 /* Registers: 34 * 32 gpr + sa0/1 + lc0/1 + m0/1 + gp + ugp + pred + pc = 42 total. 35 * vm regs = psp+elr+est+badva = 4 36 * syscall+restart = 2 more 37 * also add cs0/1 = 2 38 * so 48 = 42 + 4 + 2 + 2 39 */ 40 #define DBG_USER_REGS 42 41 #define DBG_MAX_REG_NUM (DBG_USER_REGS + 8) 42 #define NUMREGBYTES (DBG_MAX_REG_NUM*4) 43 44 #endif /* __HEXAGON_KGDB_H__ */ 45