MultiSource/Benchmarks/MallocBench/gs/utrace.c

/* Copyright (C) 1989, 1990 Aladdin Enterprises.  All rights reserved.
   Distributed by Free Software Foundation, Inc.

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Everyone is granted permission to copy, modify and redistribute
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copies.  */

/* utrace.c */
/* Dummy tracing package for Unix C */
#include <stdio.h>
#include <setjmp.h>
#include "std.h"
#include "cframe_.h"

/* This file replaces trace.c for Unix and VMS. */
/* It has only the stack parsing functionality of trace.c -- */
/* the tracing procedures are stubs. */

char *
strupr(char *str)
{	return str;
}

/* Open the map file */
FILE *
trace_open_map(char *mapname, long *preloc)
{	return NULL;
}

/* Enumerate a symbol file */
char *
trace_next_symbol(char **paddr, FILE *mapf)
{	return NULL;
}


/* Look up a symbol in a file */
char *
trace_find_symbol(char *name, FILE *mapf)
{	return NULL;
}

int trace_flush_flag;

/* Trace a named procedure */
int
trace_name(char *name, FILE *mapf, char *arg_format, int retsize)
{	return -1;
}

/* Trace a procedure */
int
trace(void (*proc)(), char *name, char *arg_format, int retsize)
{	return -1;
}

/* ------ Stack parsing ------ */

/* Forward declarations */
char *stack_next_frame(P1(char *));

/* Get the address of the caller's frame */
char *
stack_top_frame()
{	jmp_buf buf;
	setjmp(buf);			/* acquire registers */
	return stack_next_frame(cstack_top_frame(buf));
}

/* Get the return address of a frame. */
unsigned long
stack_return(char *bp)
{	return *(unsigned long *)(bp + 16);
}

/* Get the address of the next higher frame, */
/* or 0 if there is none. */
char *
stack_next_frame(char *bp)
{	char *nbp = cstack_next_frame(bp);
	if ( nbp < bp ) return 0;
	return nbp;
}