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1 files changed, 110 insertions, 0 deletions

diff --git a/i386/i386/db_machdep.h b/i386/i386/db_machdep.h
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+/* 
+ * 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.
+ */
+
+#ifndef	_I386_DB_MACHDEP_H_
+#define	_I386_DB_MACHDEP_H_
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ */
+
+#include <mach/machine/vm_types.h>
+#include <mach/machine/vm_param.h>
+#include <mach/machine/eflags.h>
+#include <i386/thread.h>		/* for thread_status */
+#include <i386/trap.h>
+
+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	SAVE_DDB_REGS		DB_SAVE(db_regs_t, ddb_regs)
+#define	RESTORE_DDB_REGS	DB_RESTORE(ddb_regs)
+
+#define	PC_REGS(regs)	((db_addr_t)(regs)->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.eip -= 1;
+
+#define	db_clear_single_step(regs)	((regs)->efl &= ~EFL_TF)
+#define	db_set_single_step(regs)	((regs)->efl |=  EFL_TF)
+
+#define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_INT3)
+#define IS_WATCHPOINT_TRAP(type, code)	((type) == T_WATCHPOINT)
+
+#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)
+
+/* only a.out symbol tables */
+
+#define	DB_NO_COFF	1
+
+#endif	/* _I386_DB_MACHDEP_H_ */