+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * HISTORY
+ * $Log: db_machdep.h,v $
+ * Revision 2.8 92/02/19 15:07:56 elf
+ * Added db_thread_fp_used.
+ * [92/02/19 rpd]
+ *
+ * Revision 2.7 91/10/09 16:06:28 af
+ * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh
+ * Added access and task name macros.
+ * [91/08/29 tak]
+ *
+ * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh
+ * Added access and task name macros.
+ * [91/08/29 tak]
+ *
+ * Revision 2.6 91/05/14 16:05:58 mrt
+ * Correcting copyright
+ *
+ * Revision 2.5 91/02/05 17:11:17 mrt
+ * Changed to new Mach copyright
+ * [91/02/01 17:31:24 mrt]
+ *
+ * Revision 2.4 91/01/08 15:10:16 rpd
+ * Added dummy inst_load/inst_store macros.
+ * [90/12/11 rpd]
+ *
+ * Revision 2.3 90/10/25 14:44:49 rwd
+ * Added watchpoint support.
+ * [90/10/18 rpd]
+ *
+ * Revision 2.2 90/08/27 21:56:15 dbg
+ * Created.
+ * [90/07/25 dbg]
+ *
+ */
+
+#ifndef _I386_DB_MACHDEP_H_
+#define _I386_DB_MACHDEP_H_
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ */
+
+
+/* #include <mach/i386/vm_types.h> */
+/* #include <mach/i386/vm_param.h> */
+#include <vm/vm_prot.h>
+#include <vm/vm_param.h>
+#include <vm/vm_inherit.h>
+#include <vm/lock.h>
+/* #include <i386/thread.h> */ /* for thread_status */
+#include <machine/frame.h> /* for struct trapframe */
+/* #include <i386/eflags.h> */
+#include <machine/eflags.h> /* from Mach... */
+/* #include <i386/trap.h> */
+#include <machine/trap.h>
+
+#define i386_saved_state trapframe
+/* end of mangling */
+
+typedef vm_offset_t db_addr_t; /* address - unsigned */
+typedef int db_expr_t; /* expression - signed */
+
+typedef struct i386_saved_state db_regs_t;
+db_regs_t ddb_regs; /* register state */
+#define DDB_REGS (&ddb_regs)
+
+#define PC_REGS(regs) ((db_addr_t)(regs)->tf_eip)
+
+#define BKPT_INST 0xcc /* breakpoint instruction */
+#define BKPT_SIZE (1) /* size of breakpoint inst */
+#define BKPT_SET(inst) (BKPT_INST)
+
+#define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1;
+
+#define db_clear_single_step(regs) ((regs)->tf_eflags &= ~EFL_TF)
+#define db_set_single_step(regs) ((regs)->tf_eflags |= EFL_TF)
+
+/* #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3) */
+/* #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) */
+/* using the 386bsd values, rather than the Mach ones: */
+#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
+#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_KDBTRAP)
+
+#define I_CALL 0xe8
+#define I_CALLI 0xff
+#define I_RET 0xc3
+#define I_IRET 0xcf
+
+#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
+#define inst_return(ins) (((ins)&0xff) == I_RET)
+#define inst_call(ins) (((ins)&0xff) == I_CALL || \
+ (((ins)&0xff) == I_CALLI && \
+ ((ins)&0x3800) == 0x1000))
+#define inst_load(ins) 0
+#define inst_store(ins) 0
+
+/* access capability and access macros */
+
+#define DB_ACCESS_LEVEL 2 /* access any space */
+#define DB_CHECK_ACCESS(addr,size,task) \
+ db_check_access(addr,size,task)
+#define DB_PHYS_EQ(task1,addr1,task2,addr2) \
+ db_phys_eq(task1,addr1,task2,addr2)
+#define DB_VALID_KERN_ADDR(addr) \
+ ((addr) >= VM_MIN_KERNEL_ADDRESS && \
+ (addr) < VM_MAX_KERNEL_ADDRESS)
+#define DB_VALID_ADDRESS(addr,user) \
+ ((!(user) && DB_VALID_KERN_ADDR(addr)) || \
+ ((user) && (addr) < VM_MIN_KERNEL_ADDRESS))
+
+boolean_t db_check_access(/* vm_offset_t, int, task_t */);
+boolean_t db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */);
+
+/* macros for printing OS server dependent task name */
+
+#define DB_TASK_NAME(task) db_task_name(task)
+#define DB_TASK_NAME_TITLE "COMMAND "
+#define DB_TASK_NAME_LEN 23
+#define DB_NULL_TASK_NAME "? "
+
+void db_task_name(/* task_t */);
+
+/* macro for checking if a thread has used floating-point */
+
+#define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
+
+#endif /* _I386_DB_MACHDEP_H_ */
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