1139731Simp/*- 24Srgrimes * Mach Operating System 34Srgrimes * Copyright (c) 1991,1990 Carnegie Mellon University 44Srgrimes * All Rights Reserved. 58876Srgrimes * 64Srgrimes * Permission to use, copy, modify and distribute this software and its 74Srgrimes * documentation is hereby granted, provided that both the copyright 84Srgrimes * notice and this permission notice appear in all copies of the 94Srgrimes * software, derivative works or modified versions, and any portions 104Srgrimes * thereof, and that both notices appear in supporting documentation. 118876Srgrimes * 124Srgrimes * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 134Srgrimes * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 144Srgrimes * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 158876Srgrimes * 164Srgrimes * Carnegie Mellon requests users of this software to return to 178876Srgrimes * 184Srgrimes * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 194Srgrimes * School of Computer Science 204Srgrimes * Carnegie Mellon University 214Srgrimes * Pittsburgh PA 15213-3890 228876Srgrimes * 234Srgrimes * any improvements or extensions that they make and grant Carnegie Mellon 244Srgrimes * the rights to redistribute these changes. 254Srgrimes * 2650477Speter * $FreeBSD: releng/10.3/sys/amd64/include/db_machdep.h 139731 2005-01-05 20:17:21Z imp $ 274Srgrimes */ 284Srgrimes 295592Sbde#ifndef _MACHINE_DB_MACHDEP_H_ 305592Sbde#define _MACHINE_DB_MACHDEP_H_ 314Srgrimes 3212589Sbde#include <machine/frame.h> 3351792Smarcel#include <machine/trap.h> 344Srgrimes 354Srgrimestypedef vm_offset_t db_addr_t; /* address - unsigned */ 36114349Spetertypedef long db_expr_t; /* expression - signed */ 374Srgrimes 38131952Smarcel#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_rip) 394Srgrimes 404Srgrimes#define BKPT_INST 0xcc /* breakpoint instruction */ 414Srgrimes#define BKPT_SIZE (1) /* size of breakpoint inst */ 424Srgrimes#define BKPT_SET(inst) (BKPT_INST) 434Srgrimes 44135561Speter#define BKPT_SKIP \ 45135561Speterdo { \ 46135561Speter kdb_frame->tf_rip += 1; \ 47135561Speter kdb_thrctx->pcb_rip += 1; \ 48135561Speter} while(0) 4983506Sdfr 50135561Speter#define FIXUP_PC_AFTER_BREAK \ 51135561Speterdo { \ 52135561Speter kdb_frame->tf_rip -= 1; \ 53135561Speter kdb_thrctx->pcb_rip -= 1; \ 54135561Speter} while(0); 554Srgrimes 56131952Smarcel#define db_clear_single_step kdb_cpu_clear_singlestep 57131952Smarcel#define db_set_single_step kdb_cpu_set_singlestep 584Srgrimes 594Srgrimes#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) 605592Sbde/* 615592Sbde * Watchpoints are not supported. The debug exception type is in %dr6 625592Sbde * and not yet in the args to this macro. 635592Sbde */ 645592Sbde#define IS_WATCHPOINT_TRAP(type, code) 0 654Srgrimes 664Srgrimes#define I_CALL 0xe8 674Srgrimes#define I_CALLI 0xff 684Srgrimes#define I_RET 0xc3 694Srgrimes#define I_IRET 0xcf 704Srgrimes 714Srgrimes#define inst_trap_return(ins) (((ins)&0xff) == I_IRET) 724Srgrimes#define inst_return(ins) (((ins)&0xff) == I_RET) 734Srgrimes#define inst_call(ins) (((ins)&0xff) == I_CALL || \ 744Srgrimes (((ins)&0xff) == I_CALLI && \ 754Srgrimes ((ins)&0x3800) == 0x1000)) 764Srgrimes#define inst_load(ins) 0 774Srgrimes#define inst_store(ins) 0 784Srgrimes 7921767Sbde/* 8021767Sbde * There no interesting addresses below _kstack = 0xefbfe000. There 8121767Sbde * are small absolute values for GUPROF, but we don't want to see them. 8221767Sbde * Treat "negative" addresses below _kstack as non-small to allow for 8321767Sbde * future reductions of _kstack and to avoid sign extension problems. 8421767Sbde * 8521767Sbde * There is one interesting symbol above -db_maxoff = 0xffff0000, 8621767Sbde * namely _APTD = 0xfffff000. Accepting this would mess up the 8721767Sbde * printing of small negative offsets. The next largest symbol is 8821767Sbde * _APTmap = 0xffc00000. Accepting this is OK (unless db_maxoff is 8921767Sbde * set to >= 0x400000 - (max stack offset)). 9021767Sbde */ 9121767Sbde#define DB_SMALL_VALUE_MAX 0x7fffffff 9221767Sbde#define DB_SMALL_VALUE_MIN (-0x400001) 9321767Sbde 945592Sbde#endif /* !_MACHINE_DB_MACHDEP_H_ */ 95