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- /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)vax.c 5.6 (Berkeley) 6/1/90";
- #endif /* not lint */
-
- #include "gprof.h"
-
- /*
- * a namelist entry to be the child of indirect calls
- */
- nltype indirectchild = {
- "(*)" , /* the name */
- (unsigned long) 0 , /* the pc entry point */
- (unsigned long) 0 , /* entry point aligned to histogram */
- (double) 0.0 , /* ticks in this routine */
- (double) 0.0 , /* cumulative ticks in children */
- (long) 0 , /* how many times called */
- (long) 0 , /* how many calls to self */
- (double) 1.0 , /* propagation fraction */
- (double) 0.0 , /* self propagation time */
- (double) 0.0 , /* child propagation time */
- (bool) 0 , /* print flag */
- (int) 0 , /* index in the graph list */
- (int) 0 , /* graph call chain top-sort order */
- (int) 0 , /* internal number of cycle on */
- (struct nl *) &indirectchild , /* pointer to head of cycle */
- (struct nl *) 0 , /* pointer to next member of cycle */
- (arctype *) 0 , /* list of caller arcs */
- (arctype *) 0 /* list of callee arcs */
- };
-
- operandenum
- operandmode( modep )
- struct modebyte *modep;
- {
- long usesreg = modep -> regfield;
-
- switch ( modep -> modefield ) {
- case 0:
- case 1:
- case 2:
- case 3:
- return literal;
- case 4:
- return indexed;
- case 5:
- return reg;
- case 6:
- return regdef;
- case 7:
- return autodec;
- case 8:
- return ( usesreg != PC ? autoinc : immediate );
- case 9:
- return ( usesreg != PC ? autoincdef : absolute );
- case 10:
- return ( usesreg != PC ? bytedisp : byterel );
- case 11:
- return ( usesreg != PC ? bytedispdef : bytereldef );
- case 12:
- return ( usesreg != PC ? worddisp : wordrel );
- case 13:
- return ( usesreg != PC ? worddispdef : wordreldef );
- case 14:
- return ( usesreg != PC ? longdisp : longrel );
- case 15:
- return ( usesreg != PC ? longdispdef : longreldef );
- }
- /* NOTREACHED */
- }
-
- char *
- operandname( mode )
- operandenum mode;
- {
-
- switch ( mode ) {
- case literal:
- return "literal";
- case indexed:
- return "indexed";
- case reg:
- return "register";
- case regdef:
- return "register deferred";
- case autodec:
- return "autodecrement";
- case autoinc:
- return "autoincrement";
- case autoincdef:
- return "autoincrement deferred";
- case bytedisp:
- return "byte displacement";
- case bytedispdef:
- return "byte displacement deferred";
- case byterel:
- return "byte relative";
- case bytereldef:
- return "byte relative deferred";
- case worddisp:
- return "word displacement";
- case worddispdef:
- return "word displacement deferred";
- case wordrel:
- return "word relative";
- case wordreldef:
- return "word relative deferred";
- case immediate:
- return "immediate";
- case absolute:
- return "absolute";
- case longdisp:
- return "long displacement";
- case longdispdef:
- return "long displacement deferred";
- case longrel:
- return "long relative";
- case longreldef:
- return "long relative deferred";
- }
- /* NOTREACHED */
- }
-
- long
- operandlength( modep )
- struct modebyte *modep;
- {
-
- switch ( operandmode( modep ) ) {
- case literal:
- case reg:
- case regdef:
- case autodec:
- case autoinc:
- case autoincdef:
- return 1;
- case bytedisp:
- case bytedispdef:
- case byterel:
- case bytereldef:
- return 2;
- case worddisp:
- case worddispdef:
- case wordrel:
- case wordreldef:
- return 3;
- case immediate:
- case absolute:
- case longdisp:
- case longdispdef:
- case longrel:
- case longreldef:
- return 5;
- case indexed:
- return 1+operandlength( (struct modebyte *) ((char *) modep) + 1 );
- }
- /* NOTREACHED */
- }
-
- unsigned long
- reladdr( modep )
- struct modebyte *modep;
- {
- operandenum mode = operandmode( modep );
- char *cp;
- short *sp;
- long *lp;
-
- cp = (char *) modep;
- cp += 1; /* skip over the mode */
- switch ( mode ) {
- default:
- fprintf( stderr , "[reladdr] not relative address\n" );
- return (unsigned long) modep;
- case byterel:
- return (unsigned long) ( cp + sizeof *cp + *cp );
- case wordrel:
- sp = (short *) cp;
- return (unsigned long) ( cp + sizeof *sp + *sp );
- case longrel:
- lp = (long *) cp;
- return (unsigned long) ( cp + sizeof *lp + *lp );
- }
- }
-
- findcall( parentp , p_lowpc , p_highpc )
- nltype *parentp;
- unsigned long p_lowpc;
- unsigned long p_highpc;
- {
- unsigned char *instructp;
- long length;
- nltype *childp;
- operandenum mode;
- operandenum firstmode;
- unsigned long destpc;
-
- if ( textspace == 0 ) {
- return;
- }
- if ( p_lowpc < s_lowpc ) {
- p_lowpc = s_lowpc;
- }
- if ( p_highpc > s_highpc ) {
- p_highpc = s_highpc;
- }
- # ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall] %s: 0x%x to 0x%x\n" ,
- parentp -> name , p_lowpc , p_highpc );
- }
- # endif DEBUG
- for ( instructp = textspace + p_lowpc ;
- instructp < textspace + p_highpc ;
- instructp += length ) {
- length = 1;
- if ( *instructp == CALLS ) {
- /*
- * maybe a calls, better check it out.
- * skip the count of the number of arguments.
- */
- # ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\t0x%x:calls" , instructp - textspace );
- }
- # endif DEBUG
- firstmode = operandmode( (struct modebyte *) (instructp+length) );
- switch ( firstmode ) {
- case literal:
- case immediate:
- break;
- default:
- goto botched;
- }
- length += operandlength( (struct modebyte *) (instructp+length) );
- mode = operandmode( (struct modebyte *) ( instructp + length ) );
- # ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "\tfirst operand is %s", operandname( firstmode ) );
- printf( "\tsecond operand is %s\n" , operandname( mode ) );
- }
- # endif DEBUG
- switch ( mode ) {
- case regdef:
- case bytedispdef:
- case worddispdef:
- case longdispdef:
- case bytereldef:
- case wordreldef:
- case longreldef:
- /*
- * indirect call: call through pointer
- * either *d(r) as a parameter or local
- * (r) as a return value
- * *f as a global pointer
- * [are there others that we miss?,
- * e.g. arrays of pointers to functions???]
- */
- addarc( parentp , &indirectchild , (long) 0 );
- length += operandlength(
- (struct modebyte *) ( instructp + length ) );
- continue;
- case byterel:
- case wordrel:
- case longrel:
- /*
- * regular pc relative addressing
- * check that this is the address of
- * a function.
- */
- destpc = reladdr( (struct modebyte *) (instructp+length) )
- - (unsigned long) textspace;
- if ( destpc >= s_lowpc && destpc <= s_highpc ) {
- childp = nllookup( destpc );
- # ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\tdestpc 0x%x" , destpc );
- printf( " childp->name %s" , childp -> name );
- printf( " childp->value 0x%x\n" ,
- childp -> value );
- }
- # endif DEBUG
- if ( childp -> value == destpc ) {
- /*
- * a hit
- */
- addarc( parentp , childp , (long) 0 );
- length += operandlength( (struct modebyte *)
- ( instructp + length ) );
- continue;
- }
- goto botched;
- }
- /*
- * else:
- * it looked like a calls,
- * but it wasn't to anywhere.
- */
- goto botched;
- default:
- botched:
- /*
- * something funny going on.
- */
- # ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\tbut it's a botch\n" );
- }
- # endif DEBUG
- length = 1;
- continue;
- }
- }
- }
- }
-