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      1 /*	$NetBSD: ptrace.h,v 1.19 2021/03/18 23:18:36 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)ptrace.h	8.1 (Berkeley) 6/10/93
     32  */
     33 
     34 /*
     35  * Mips-dependent ptrace definitions.
     36  *
     37  */
     38 
     39 #ifndef _MIPS_PTRACE_H_
     40 #define	_MIPS_PTRACE_H_
     41 
     42 /* MIPS PT_STEP PT_FIRSTMACH+0 might be defined by a port specific header */
     43 #define	PT_GETREGS	(PT_FIRSTMACH + 1)
     44 #define	PT_SETREGS	(PT_FIRSTMACH + 2)
     45 
     46 #define	PT_GETFPREGS	(PT_FIRSTMACH + 3)
     47 #define	PT_SETFPREGS	(PT_FIRSTMACH + 4)
     48 
     49 #ifdef PT_STEP
     50 #define	PT_SETSTEP	(PT_FIRSTMACH + 5)
     51 #define	PT_CLEARSTEP	(PT_FIRSTMACH + 6)
     52 #endif
     53 
     54 #define	PT_MACHDEP_STRINGS \
     55 	"PT_STEP", \
     56 	"PT_GETREGS", \
     57 	"PT_SETREGS", \
     58 	"PT_GETFPREGS", \
     59 	"PT_SETFPREGS", \
     60 	"PT_SETSTEP", \
     61 	"PT_CLEARSTEP",
     62 
     63 #include <machine/reg.h>
     64 #define	PTRACE_REG_PC(r)	(r)->r_regs[35]
     65 #define	PTRACE_REG_FP(r)	(r)->r_regs[30]
     66 #define	PTRACE_REG_SET_PC(r, v)	(r)->r_regs[35] = (v)
     67 #define	PTRACE_REG_SP(r)	(r)->r_regs[29]
     68 #define	PTRACE_REG_INTRV(r)	(r)->r_regs[2]
     69 
     70 /*
     71  * The sigrie is defined in the MIPS32r6 and MIPS64r6 specs to
     72  * generate a Reserved Instruction trap but uses a previously
     73  * reserved instruction encoding and is thus both backwards and
     74  * forwards compatible.
     75  */
     76 #define	PTRACE_ILLEGAL_ASM	do {					\
     77 		asm volatile(						\
     78 			".set	push;		"			\
     79 			".set	mips32r6;	"			\
     80 			"sigrie	0;		"			\
     81 			".set	pop;		"			\
     82 		);							\
     83 	} while (0);
     84 
     85 #define	PTRACE_BREAKPOINT	((const uint8_t[]) { 0x00, 0x00, 0x00, 0x0d })
     86 #define	PTRACE_BREAKPOINT_ASM	__asm __volatile("break")
     87 #define	PTRACE_BREAKPOINT_SIZE	4
     88 
     89 /*
     90  * Glue for gdb: map NetBSD register names to legacy ptrace register names
     91  */
     92 #define	GPR_BASE 0
     93 
     94 #ifndef JB_PC
     95 #define	JB_PC	2	/* pc is at ((long *)jmp_buf)[2] */
     96 #endif
     97 
     98 #include <machine/reg.h>	/* Historically in sys/ptrace.h */
     99 #include <machine/regnum.h>	/* real register names */
    100 
    101 #endif	 /* _MIPS_PTRACE_H_ */
    102