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      1 /*	$NetBSD: ptrace.h,v 1.17 2020/12/14 01:58:48 rin Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Frank Lancaster
      5  * Copyright (c) 1995 Tools GmbH
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by TooLs GmbH.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <arm/cdefs.h>
     35 
     36 /*
     37  * arm-dependent ptrace definitions
     38  */
     39 #if 0
     40 /* Exposed to userland for NetBSD 1.6 to 9. Do not reuse for other purpose. */
     41 #define PT_STEP		(PT_FIRSTMACH + 0) /* Not implemented */
     42 #endif
     43 #define	PT_GETREGS	(PT_FIRSTMACH + 1)
     44 #define	PT_SETREGS	(PT_FIRSTMACH + 2)
     45 /* 3 and 4 are for FPE registers */
     46 #define	PT_GETFPREGS	(PT_FIRSTMACH + 5)
     47 #define	PT_SETFPREGS	(PT_FIRSTMACH + 6)
     48 #if 0
     49 /* Exposed to userland for NetBSD 8 to 9. Do not reuse for other purpose. */
     50 #define PT_SETSTEP	(PT_FIRSTMACH + 7) /* Not implemented */
     51 #define PT_CLEARSTEP	(PT_FIRSTMACH + 8) /* Not implemented */
     52 #endif
     53 
     54 #define PT_MACHDEP_STRINGS \
     55 	"n/a PT_STEP", \
     56 	"PT_GETREGS", \
     57 	"PT_SETREGS", \
     58 	"old PT_GETFPREGS", \
     59 	"old PT_SETFPREGS", \
     60 	"PT_GETFPREGS", \
     61 	"PT_SETFPREGS", \
     62 	"n/a PT_SETSTEP", \
     63 	"n/a PT_CLEARSTEP",
     64 
     65 #include <machine/reg.h>
     66 #define PTRACE_REG_PC(_r)		(_r)->r_pc
     67 #define PTRACE_REG_FP(_r)		(_r)->r[11]
     68 #define PTRACE_REG_SET_PC(_r, _v)	(_r)->r_pc = (_v)
     69 #define PTRACE_REG_SP(_r)		(_r)->r_sp
     70 #define PTRACE_REG_INTRV(_r)		(_r)->r[0]
     71 
     72 #define PTRACE_ILLEGAL_ASM	__asm __volatile ("udf #0" : : : "memory")
     73 
     74 #if defined(__ARMEL__) || defined(_ARM_ARCH_BE8)
     75 #define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xfe, 0xde, 0xff, 0xe7 })
     76 #else
     77 #define PTRACE_BREAKPOINT	((const uint8_t[]) { 0xe7, 0xff, 0xde, 0xfe })
     78 #endif
     79 
     80 #ifdef _ARM_ARCH_BE8
     81 #define PTRACE_BREAKPOINT_INSN	0xfedeffe7
     82 #else
     83 #define PTRACE_BREAKPOINT_INSN	0xe7ffdefe
     84 #endif
     85 
     86 #define PTRACE_BREAKPOINT_ASM	__asm __volatile (".word " ___STRING(PTRACE_BREAKPOINT_INSN) )
     87 #define PTRACE_BREAKPOINT_SIZE	4
     88