1 /*- 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 * 26 * from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_DB_MACHDEP_H_ 31 #define _MACHINE_DB_MACHDEP_H_ 32 33 #include <machine/frame.h> 34 #include <machine/trap.h> 35 #include <machine/armreg.h> 36 37 #define T_BREAKPOINT (1) 38 #define T_WATCHPOINT (2) 39 typedef vm_offset_t db_addr_t; 40 typedef int db_expr_t; 41 42 #define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.sf_pc) 43 44 #define BKPT_INST (KERNEL_BREAKPOINT) 45 #define BKPT_SIZE (INSN_SIZE) 46 #define BKPT_SET(inst) (BKPT_INST) 47 48 #define BKPT_SKIP do { \ 49 kdb_frame->tf_pc += BKPT_SIZE; \ 50 } while (0) 51 52 #if __ARM_ARCH >= 6 53 #define db_clear_single_step kdb_cpu_clear_singlestep 54 #define db_set_single_step kdb_cpu_set_singlestep 55 #define db_pc_is_singlestep kdb_cpu_pc_is_singlestep 56 #else 57 #define SOFTWARE_SSTEP 1 58 #endif 59 60 #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT) 61 #define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT) 62 63 #define inst_trap_return(ins) (0) 64 /* ldmxx reg, {..., pc} 65 01800000 stack mode 66 000f0000 register 67 0000ffff register list */ 68 /* mov pc, reg 69 0000000f register */ 70 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 71 ((ins) & 0x0ff0fff0) == 0x01a0f000 || \ 72 ((ins) & 0x0ffffff0) == 0x012fff10) /* bx */ 73 /* bl ... 74 00ffffff offset>>2 */ 75 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 76 /* b ... 77 00ffffff offset>>2 */ 78 /* ldr pc, [pc, reg, lsl #2] 79 0000000f register */ 80 81 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 82 ((ins) & 0x0fdffff0) == 0x079ff100 || \ 83 ((ins) & 0x0cd0f000) == 0x0490f000 || \ 84 ((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \ 85 ((ins) & 0x0de0f000) == 0x0080f000) 86 87 #define inst_load(ins) (0) 88 #define inst_store(ins) (0) 89 90 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 91 92 #define DB_ELFSIZE 32 93 94 int db_validate_address(vm_offset_t); 95 96 u_int branch_taken (u_int insn, db_addr_t pc); 97 98 #ifdef __ARMEB__ 99 #define BYTE_MSF (1) 100 #endif 101 #endif /* !_MACHINE_DB_MACHDEP_H_ */ 102