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ptrace.h revision 1.3.100.4 
      1 /*	$NetBSD: ptrace.h,v 1.3.100.4 2017/02/05 13:40:02 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1993 Christopher G. Demetriou
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Christopher G. Demetriou.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 #ifndef _AMD64_PTRACE_H_
     33 #define _AMD64_PTRACE_H_
     34 
     35 #ifdef __x86_64__
     36 /*
     37  * i386-dependent ptrace definitions
     38  */
     39 #define	PT_STEP			(PT_FIRSTMACH + 0)
     40 #define	PT_GETREGS		(PT_FIRSTMACH + 1)
     41 #define	PT_SETREGS		(PT_FIRSTMACH + 2)
     42 #define	PT_GETFPREGS		(PT_FIRSTMACH + 3)
     43 #define	PT_SETFPREGS		(PT_FIRSTMACH + 4)
     44 #define	PT_READ_WATCHPOINT	(PT_FIRSTMACH + 5)
     45 #define	PT_WRITE_WATCHPOINT	(PT_FIRSTMACH + 6)
     46 #define	PT_COUNT_WATCHPOINTS	(PT_FIRSTMACH + 7)
     47 
     48 #define PT_MACHDEP_STRINGS \
     49 	"PT_STEP", \
     50 	"PT_GETREGS", \
     51 	"PT_SETREGS", \
     52 	"PT_GETFPREGS", \
     53 	"PT_SETFPREGS", \
     54 	"PT_READ_WATCHPOINT", \
     55 	"PT_WRITE_WATCHPOINT", \
     56 	"PT_COUNT_WATCHPOINTS"
     57 
     58 #include <machine/reg.h>
     59 #define PTRACE_REG_PC(r)	(r)->regs[_REG_RIP]
     60 #define PTRACE_REG_SET_PC(r, v)	(r)->regs[_REG_RIP] = (v)
     61 #define PTRACE_REG_SP(r)	(r)->regs[_REG_RSP]
     62 #define PTRACE_REG_INTRV(r)	(r)->regs[_REG_RAX]
     63 
     64 #define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xcc })
     65 #define PTRACE_BREAKPOINT_SIZE	1
     66 #define PTRACE_BREAKPOINT_ADJ	1
     67 
     68 #define __HAVE_PTRACE_WATCHPOINTS
     69 
     70 /*
     71  * The current list of supported hardware watchpoints
     72  */
     73 #define PTRACE_PW_TYPE_DBREGS	1
     74 
     75 struct mdpw {
     76 	union {
     77 		/* Debug Registers DR0-3, DR6, DR7 */
     78 		struct {
     79 			void	*_md_address;
     80 			int	 _md_condition;
     81 			int	 _md_length;
     82 		} _dbregs;
     83 	} _type;
     84 };
     85 
     86 /*
     87  * This MD structure translates into x86_hw_watchpoint
     88  *
     89  * pw_address - 0 represents disabled hardware watchpoint
     90  *
     91  * conditions:
     92  *     0b00 - execution
     93  *     0b01 - data write
     94  *     0b10 - io read/write (not implemented)
     95  *     0b11 - data read/write
     96  *
     97  * length:
     98  *     0b00 - 1 byte
     99  *     0b01 - 2 bytes
    100  *     0b10 - undefined (8 bytes in modern CPUs - not implemented)
    101  *     0b11 - 4 bytes
    102  *
    103  * Helper symbols for conditions and length are available in <x86/dbregs.h>
    104  *
    105  */
    106 
    107 #define	md_address	_type._dbregs._md_address
    108 #define	md_condition	_type._dbregs._md_condition
    109 #define	md_length	_type._dbregs._md_length
    110 
    111 
    112 #ifdef _KERNEL_OPT
    113 #include "opt_compat_netbsd32.h"
    114 
    115 #ifdef COMPAT_NETBSD32
    116 #include <machine/netbsd32_machdep.h>
    117 
    118 #define process_read_regs32	netbsd32_process_read_regs
    119 #define process_read_fpregs32	netbsd32_process_read_fpregs
    120 
    121 #define process_write_regs32	netbsd32_process_write_regs
    122 #define process_write_fpregs32	netbsd32_process_write_fpregs
    123 
    124 #define process_write_watchpoint32	netbsd32_process_write_watchpoint
    125 #define process_read_watchpoint32	netbsd32_process_read_watchpoint
    126 #define process_count_watchpoint32	netbsd32_process_count_watchpoint
    127 
    128 #define process_reg32		struct reg32
    129 #define process_fpreg32		struct fpreg32
    130 #define process_watchpoint32	struct ptrace_watchpoint32
    131 #endif	/* COMPAT_NETBSD32 */
    132 #endif	/* _KERNEL_OPT */
    133 
    134 #else	/* !__x86_64__ */
    135 
    136 #include <i386/ptrace.h>
    137 
    138 #endif	/* __x86_64__ */
    139 
    140 #endif	/* _AMD64_PTRACE_H_ */
    141