source: trunk/src/peldr/initterm.cpp@ 506

Last change on this file since 506 was 506, checked in by sandervl, 26 years ago

* empty log message *
File size: 4.1 KB
Line 
1/* $Id: initterm.cpp,v 1.1 1999-08-16 13:54:06 sandervl Exp $ */
2
3/*
4 * PELDR DLL entry point
5 *
6 * Copyright 1998 Sander van Leeuwen
7 *
8 *
9 * Project Odin Software License can be found in LICENSE.TXT
10 *
11 */
12
13/*-------------------------------------------------------------*/
14/* INITERM.C -- Source for a custom dynamic link library */
15/* initialization and termination (_DLL_InitTerm) */
16/* function. */
17/* */
18/* When called to perform initialization, this sample function */
19/* gets storage for an array of integers, and initializes its */
20/* elements with random integers. At termination time, it */
21/* frees the array. Substitute your own special processing. */
22/*-------------------------------------------------------------*/
23
24
25/* Include files */
26#define INCL_DOSMODULEMGR
27#define INCL_DOSPROCESS
28#include <os2.h>
29#include <stdlib.h>
30#include <stdio.h>
31#include <string.h>
32#include <odin.h>
33#include <misc.h> /*PLF Wed 98-03-18 23:18:15*/
34
35/*-------------------------------------------------------------------*/
36/* A clean up routine registered with DosExitList must be used if */
37/* runtime calls are required and the runtime is dynamically linked. */
38/* This will guarantee that this clean up routine is run before the */
39/* library DLL is terminated. */
40/*-------------------------------------------------------------------*/
41static void APIENTRY cleanup(ULONG reason);
42
43ULONG reservedMemory = 0;
44
45/****************************************************************************/
46/* _DLL_InitTerm is the function that gets called by the operating system */
47/* loader when it loads and frees this DLL for each process that accesses */
48/* this DLL. However, it only gets called the first time the DLL is loaded */
49/* and the last time it is freed for a particular process. The system */
50/* linkage convention MUST be used because the operating system loader is */
51/* calling this function. */
52/****************************************************************************/
53unsigned long _System _DLL_InitTerm(unsigned long hModule, unsigned long
54 ulFlag)
55{
56 size_t i;
57 APIRET rc;
58
59 /*-------------------------------------------------------------------------*/
60 /* If ulFlag is zero then the DLL is being loaded so initialization should */
61 /* be performed. If ulFlag is 1 then the DLL is being freed so */
62 /* termination should be performed. */
63 /*-------------------------------------------------------------------------*/
64
65 switch (ulFlag) {
66 case 0 :
67
68 /*******************************************************************/
69 /* The C run-time environment initialization function must be */
70 /* called before any calls to C run-time functions that are not */
71 /* inlined. */
72 /*******************************************************************/
73
74 //SvL: Reserve memory for win32 exes without fixups
75 // This is done before any Odin or PMWIN dll is loaded, so we'll get
76 // a very low virtual address. (which is exactly what we want)
77 rc = DosAllocMem((PPVOID)&reservedMemory, 16*1024*1024, PAG_WRITE | PAG_READ);
78
79 /*******************************************************************/
80 /* A DosExitList routine must be used to clean up if runtime calls */
81 /* are required and the runtime is dynamically linked. */
82 /*******************************************************************/
83 break;
84 case 1 :
85 break;
86 default :
87 return 0UL;
88 }
89
90 /***********************************************************/
91 /* A non-zero value must be returned to indicate success. */
92 /***********************************************************/
93 return 1UL;
94}
95
96ULONG SYSTEM ReserveMem()
97{
98 return reservedMemory;
99}
Note: See TracBrowser for help on using the repository browser.