[unix-history] / usr / src / usr.bin / pascal / pdx / process / process.rep

/*-
 * Copyright (c) 1982 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)process.rep	5.5 (Berkeley) 4/16/91
 */

/*
 * This file defines the representation of a process.
 * It is MACHINE DEPENDENT.
 */

#define STOPPED 0177
#define FINISHED 0

#ifdef vax
#define NREG 12			/* maximum number of saved registers */
#endif
#ifdef tahoe
#define	NREG 13
#endif
#ifdef mc68000
#define NREG 14			/* maximum number of saved registers */
#endif
#define CSIZE 101		/* size of instruction cache */

/*
 * Cache-ing of instruction segment is done to reduce the number
 * of calls to ptrace.
 */

typedef struct {
	WORD addr;
	WORD val;
} CACHEWORD;

/*
 * This structure holds the information we need from the user structure.
 */

struct process {
	int pid;		/* process being traced */
	WORD reg[NREG];		/* process's registers */
#ifdef tahoe
	WORD fp, sp, pc;	/* special registers */
#else
	WORD ap, fp, sp, pc;	/* special registers */
#endif
	WORD oreg[NREG];	/* registers when process last stopped */
	WORD oap, ofp, osp, opc;/* special registers when process stopped */
	int status;		/* either STOPPED or FINISHED */
	int signo;		/* signal that stopped process */
	int exitval;		/* return value from exit() */
	long sigset;		/* bit array of traced signals */
	CACHEWORD word[CSIZE];	/* text segment cache */
};

/*
 * Process manipulation routines local to this module.
 */

int pstart();			/* start up a process */
int pcont();			/* continue execution */
int pstep();			/* single step */
int pio();			/* process memory move */
int psigtrace();		/* catch/don't catch a signal */
int unsetsigtraces();		/* don't catch any signals */

/*
 * These definitions are for the arguments to "pio".
 */

typedef enum { PREAD, PWRITE } PIO_OP;
typedef enum { TEXTSEG, DATASEG } PIO_SEG;

/* macros for things that used to be functions */

#define	iread(buf, addr, nbytes)	dread(buf, addr+ENDOFF, nbytes)
#define	iwrite(buf, addr, nbytes)	dwrite(buf, addr+ENDOFF, nbytes)
#define	dread(buf, addr, nbytes)	drdwr(PREAD, buf, addr, nbytes)
#define	dwrite(buf, addr, nbytes)	drdwr(PWRITE, buf, addr, nbytes)
Commit	Line	Data
505bf312 KB	1	/*-
	2	* Copyright (c) 1982 The Regents of the University of California.
	3	* All rights reserved.
	4	*
af359dea C	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
023ccbaf	20	*
af359dea C	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
023ccbaf	32	*
af359dea	33	* @(#)process.rep 5.5 (Berkeley) 4/16/91
50ad1403	34	*/
ca0bf12f	35
7a1812dd ML	36	/*
	37	* This file defines the representation of a process.
	38	* It is MACHINE DEPENDENT.
	39	*/
	40
	41	#define STOPPED 0177
	42	#define FINISHED 0
	43
ca0bf12f	44	#ifdef vax
7a1812dd	45	#define NREG 12 /* maximum number of saved registers */
82d3cd01 KM	46	#endif
	47	#ifdef tahoe
	48	#define NREG 13
	49	#endif
	50	#ifdef mc68000
ca0bf12f ML	51	#define NREG 14 /* maximum number of saved registers */
ca0bf12f ML	52	#endif
7a1812dd ML	53	#define CSIZE 101 /* size of instruction cache */
	54
	55	/*
	56	* Cache-ing of instruction segment is done to reduce the number
	57	* of calls to ptrace.
	58	*/
	59
	60	typedef struct {
	61	WORD addr;
	62	WORD val;
	63	} CACHEWORD;
	64
	65	/*
	66	* This structure holds the information we need from the user structure.
	67	*/
	68
	69	struct process {
	70	int pid; /* process being traced */
	71	WORD reg[NREG]; /* process's registers */
82d3cd01 KM	72	#ifdef tahoe
	73	WORD fp, sp, pc; /* special registers */
	74	#else
7a1812dd	75	WORD ap, fp, sp, pc; /* special registers */
82d3cd01	76	#endif
7a1812dd ML	77	WORD oreg[NREG]; /* registers when process last stopped */
	78	WORD oap, ofp, osp, opc;/* special registers when process stopped */
	79	int status; /* either STOPPED or FINISHED */
	80	int signo; /* signal that stopped process */
	81	int exitval; /* return value from exit() */
	82	long sigset; /* bit array of traced signals */
	83	CACHEWORD word[CSIZE]; /* text segment cache */
	84	};
	85
	86	/*
	87	* Process manipulation routines local to this module.
	88	*/
	89
7d4de299 KB	90	int pstart(); /* start up a process */
	91	int pcont(); /* continue execution */
	92	int pstep(); /* single step */
	93	int pio(); /* process memory move */
	94	int psigtrace(); /* catch/don't catch a signal */
	95	int unsetsigtraces(); /* don't catch any signals */
7a1812dd ML	96
	97	/*
	98	* These definitions are for the arguments to "pio".
	99	*/
	100
	101	typedef enum { PREAD, PWRITE } PIO_OP;
	102	typedef enum { TEXTSEG, DATASEG } PIO_SEG;
82d3cd01 KM	103
	104	/* macros for things that used to be functions */
	105
	106	#define iread(buf, addr, nbytes) dread(buf, addr+ENDOFF, nbytes)
	107	#define iwrite(buf, addr, nbytes) dwrite(buf, addr+ENDOFF, nbytes)
7d4de299 KB	108	#define dread(buf, addr, nbytes) drdwr(PREAD, buf, addr, nbytes)
7d4de299 KB	109	#define dwrite(buf, addr, nbytes) drdwr(PWRITE, buf, addr, nbytes)