File r36/cslbase/pro.c artifact 4c14fa3b20 part of check-in bb64a0280f

/*  pro.c                            Copyright (C) 1989-96 Codemist Ltd */

/* Watcom C stack checking code */

/* Signature: 464b2e46 13-Sep-1996 */

#include <stdarg.h>
#include <string.h>
#include <ctype.h>

#include "machine.h"

#include "tags.h"
#include "externs.h"
#include "arith.h"
#include "read.h"
#include "stream.h"
#include "entries.h"
#include "version.h"
#include "cslerror.h"


static int spset = 0;
static int32 spbase = 0, spmin;

static FILE *stack_log = NULL;

#pragma aux __PRO modify [];

#pragma aux __PRO "__PRO";

extern int pusha(void);
#pragma aux pusha = "push eax" "push ecx" "push edx" value [eax] modify [];
extern int popa(void);
#pragma aux popa = "pop edx" "pop ecx" "pop eax" value [eax] modify [eax ecx edx];

void __PRO()
{
    int32 temp;
    pusha();
    temp = (int32)&temp;
    if (!spset)
    {   spbase = spmin = temp;
        spset = 1;
    }
    if (stack_log == NULL) stack_log = fopen("stack.log", "w");
    if (temp <= spmin-64)  /* Only check at granularity of 64 bytes */
    {
        fprintf(stack_log, "Stack depth %d\n", spbase-temp);
        spmin = temp;
    }
    popa();
    return;
}

/* End of pro.c */