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 */ 28 29 #ifndef _MACHINE_DB_MACHDEP_H_ 30 #define _MACHINE_DB_MACHDEP_H_ 31 32 #include <machine/frame.h> 33 #include <machine/trap.h> 34 #include <machine/armreg.h> 35 36 #define T_BREAKPOINT (1) 37 #define T_WATCHPOINT (2) 38 typedef vm_offset_t db_addr_t; 39 typedef int db_expr_t; 40 41 #define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.sf_pc) 42 43 #define BKPT_INST (KERNEL_BREAKPOINT) 44 #define BKPT_SIZE (INSN_SIZE) 45 #define BKPT_SET(inst) (BKPT_INST) 46 47 #define BKPT_SKIP do { \ 48 kdb_frame->tf_pc += BKPT_SIZE; \ 49 } while (0) 50 51 #define db_clear_single_step kdb_cpu_clear_singlestep 52 #define db_set_single_step kdb_cpu_set_singlestep 53 #define db_pc_is_singlestep kdb_cpu_pc_is_singlestep 54 55 #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT) 56 #define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT) 57 58 #define inst_trap_return(ins) (0) 59 /* ldmxx reg, {..., pc} 60 01800000 stack mode 61 000f0000 register 62 0000ffff register list */ 63 /* mov pc, reg 64 0000000f register */ 65 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 66 ((ins) & 0x0ff0fff0) == 0x01a0f000 || \ 67 ((ins) & 0x0ffffff0) == 0x012fff10) /* bx */ 68 /* bl ... 69 00ffffff offset>>2 */ 70 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 71 /* b ... 72 00ffffff offset>>2 */ 73 /* ldr pc, [pc, reg, lsl #2] 74 0000000f register */ 75 76 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 77 ((ins) & 0x0fdffff0) == 0x079ff100 || \ 78 ((ins) & 0x0cd0f000) == 0x0490f000 || \ 79 ((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \ 80 ((ins) & 0x0de0f000) == 0x0080f000) 81 82 #define inst_load(ins) (0) 83 #define inst_store(ins) (0) 84 85 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 86 87 #define DB_ELFSIZE 32 88 89 int db_validate_address(vm_offset_t); 90 91 u_int branch_taken (u_int insn, db_addr_t pc); 92 93 #endif /* !_MACHINE_DB_MACHDEP_H_ */ 94