mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
5feb2148ba
disassembler has not been updated yet, and will do some very strange things. It does tracebacks (without function arguments due to regparm calling conventions) if -fno-omit-frame-pointer is used (to come later). This achieves basic functionality. Approved by: re (amd64/* blanket)
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_DB_MACHDEP_H_
|
|
#define _MACHINE_DB_MACHDEP_H_
|
|
|
|
#include <machine/frame.h>
|
|
#include <machine/psl.h>
|
|
#include <machine/trap.h>
|
|
|
|
#define amd64_saved_state trapframe
|
|
|
|
typedef vm_offset_t db_addr_t; /* address - unsigned */
|
|
typedef long db_expr_t; /* expression - signed */
|
|
|
|
typedef struct amd64_saved_state db_regs_t;
|
|
extern db_regs_t ddb_regs; /* register state */
|
|
#define DDB_REGS (&ddb_regs)
|
|
|
|
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_rip)
|
|
|
|
#define BKPT_INST 0xcc /* breakpoint instruction */
|
|
#define BKPT_SIZE (1) /* size of breakpoint inst */
|
|
#define BKPT_SET(inst) (BKPT_INST)
|
|
|
|
#define BKPT_SKIP ddb_regs.tf_rip += 1
|
|
|
|
#define FIXUP_PC_AFTER_BREAK ddb_regs.tf_rip -= 1;
|
|
|
|
#define db_clear_single_step(regs) ((regs)->tf_rflags &= ~PSL_T)
|
|
#define db_set_single_step(regs) ((regs)->tf_rflags |= PSL_T)
|
|
|
|
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
|
|
/*
|
|
* Watchpoints are not supported. The debug exception type is in %dr6
|
|
* and not yet in the args to this macro.
|
|
*/
|
|
#define IS_WATCHPOINT_TRAP(type, code) 0
|
|
|
|
#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
|
|
|
|
/*
|
|
* There no interesting addresses below _kstack = 0xefbfe000. There
|
|
* are small absolute values for GUPROF, but we don't want to see them.
|
|
* Treat "negative" addresses below _kstack as non-small to allow for
|
|
* future reductions of _kstack and to avoid sign extension problems.
|
|
*
|
|
* There is one interesting symbol above -db_maxoff = 0xffff0000,
|
|
* namely _APTD = 0xfffff000. Accepting this would mess up the
|
|
* printing of small negative offsets. The next largest symbol is
|
|
* _APTmap = 0xffc00000. Accepting this is OK (unless db_maxoff is
|
|
* set to >= 0x400000 - (max stack offset)).
|
|
*/
|
|
#define DB_SMALL_VALUE_MAX 0x7fffffff
|
|
#define DB_SMALL_VALUE_MIN (-0x400001)
|
|
|
|
#endif /* !_MACHINE_DB_MACHDEP_H_ */
|