Create and populate OS/2 EMX port build directory:

  PC/os2emx/
    Makefile
    README.os2emx
    config.c
    dlfcn.c            // libdl emulation code for loadable extensions
    dlfcn.h
    dllentry.c         // DLL initialisation routine for Python DLL
    getpath.c
    pyconfig.h
    python23.def       // Python DLL symbol export definitions
    pythonpm.c         // console-less PM interpreter wrapper

1 files changed, 224 insertions, 0 deletions

diff --git a/PC/os2emx/dlfcn.c b/PC/os2emx/dlfcn.c
new file mode 100644
index 0000000000..acf0197c38
--- /dev/null
+++ b/PC/os2emx/dlfcn.c
@@ -0,0 +1,224 @@
+/* -*- C -*- ***********************************************
+Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
+The Netherlands.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI or Corporation for National Research Initiatives or
+CNRI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+While CWI is the initial source for this software, a modified version
+is made available by the Corporation for National Research Initiatives
+(CNRI) at the Internet address ftp://ftp.python.org.
+
+STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
+CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
+DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/*
+    This library implements dlopen() - functions for OS/2 using
+    DosLoadModule() and company.
+*/
+
+#define INCL_DOS
+#define INCL_DOSERRORS
+#define INCL_DOSSESMGR
+#define INCL_WINPROGRAMLIST
+#define INCL_WINFRAMEMGR
+#include <os2.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+
+/*-------------------------------------- Unix-like dynamic linking emulation -*/
+
+typedef struct _track_rec {
+	char *name;
+	HMODULE handle;
+	void *id;
+	struct _track_rec *next;
+} tDLLchain, *DLLchain;
+
+static DLLchain dlload = NULL;		/* A simple chained list of DLL names */
+static char dlerr [256];			    /* last error text string */
+static void *last_id;
+
+static DLLchain find_id(void *id)
+{
+	DLLchain tmp;
+
+	for (tmp = dlload; tmp; tmp = tmp->next)
+		if (id == tmp->id)
+			return (tmp);
+
+	return (NULL);
+}
+
+/* load a dynamic-link library and return handle */
+void *dlopen (char *filename, int flags)
+{
+	HMODULE hm;
+	DLLchain tmp;
+	char err[256];
+	char *errtxt;
+	int rc = 0, set_chain = 0;
+
+	for (tmp = dlload; tmp; tmp = tmp->next)
+		if (strnicmp(tmp->name, filename, 999) == 0)
+			break;
+
+	if (!tmp)
+	{
+		tmp = (DLLchain)malloc (sizeof (tDLLchain));
+		if (!tmp)
+			goto nomem;
+		tmp->name = strdup (filename);
+		tmp->next = dlload;
+		set_chain = 1;
+	}
+
+	switch (rc = DosLoadModule((PSZ)&err, sizeof(err), filename, &hm))
+	{
+		case NO_ERROR:
+			tmp->handle = hm;
+			if (set_chain) {
+				do {
+					last_id++;
+				} while ((last_id == 0) || (find_id(last_id)));
+				tmp->id = last_id;
+				dlload = tmp;
+			}
+			return (tmp->id);
+		case ERROR_FILE_NOT_FOUND:
+		case ERROR_PATH_NOT_FOUND:
+			errtxt = "module `%s' not found";
+			break;
+		case ERROR_TOO_MANY_OPEN_FILES:
+		case ERROR_NOT_ENOUGH_MEMORY:
+		case ERROR_SHARING_BUFFER_EXCEEDED:
+nomem:
+			errtxt = "out of system resources";
+			break;
+		case ERROR_ACCESS_DENIED:
+			errtxt = "access denied";
+			break;
+		case ERROR_BAD_FORMAT:
+		case ERROR_INVALID_SEGMENT_NUMBER:
+		case ERROR_INVALID_ORDINAL:
+		case ERROR_INVALID_MODULETYPE:
+		case ERROR_INVALID_EXE_SIGNATURE:
+		case ERROR_EXE_MARKED_INVALID:
+		case ERROR_ITERATED_DATA_EXCEEDS_64K:
+		case ERROR_INVALID_MINALLOCSIZE:
+		case ERROR_INVALID_SEGDPL:
+		case ERROR_AUTODATASEG_EXCEEDS_64K:
+		case ERROR_RELOCSRC_CHAIN_EXCEEDS_SEGLIMIT:
+			errtxt = "invalid module format";
+			break;
+		case ERROR_INVALID_NAME:
+			errtxt = "filename doesn't match module name";
+			break;
+		case ERROR_SHARING_VIOLATION:
+		case ERROR_LOCK_VIOLATION:
+			errtxt = "sharing violation";
+			break;
+		case ERROR_INIT_ROUTINE_FAILED:
+			errtxt = "module initialization failed";
+			break;
+		default:
+			errtxt = "cause `%s', error code = %d";
+			break;
+	}
+	snprintf (dlerr, sizeof (dlerr), errtxt, &err, rc);
+	if (tmp) {
+		if (tmp->name)
+			free(tmp->name);
+		free (tmp);
+	}
+	return (0);
+}
+
+/* return a pointer to the `symbol' in DLL */
+void *dlsym (void *handle, char *symbol)
+{
+	int rc = 0;
+	PFN addr;
+	char *errtxt;
+	int symord = 0;
+	DLLchain tmp = find_id (handle);
+
+	if (!tmp)
+		goto inv_handle;
+
+	if (*symbol == '#')
+		symord = atoi (symbol + 1);
+
+	switch (rc = DosQueryProcAddr(tmp->handle, symord, symbol, &addr))
+	{
+		case NO_ERROR:
+			return ((void *)addr);
+		case ERROR_INVALID_HANDLE:
+inv_handle:
+			errtxt = "invalid module handle";
+			break;
+		case ERROR_PROC_NOT_FOUND:
+		case ERROR_INVALID_NAME:
+			errtxt = "no symbol `%s' in module";
+			break;
+		default:
+			errtxt = "symbol `%s', error code = %d";
+			break;
+	}
+	snprintf (dlerr, sizeof (dlerr), errtxt, symbol, rc);
+	return (NULL);
+}
+
+/* free dynamicaly-linked library */
+int dlclose (void *handle)
+{
+	int rc;
+	DLLchain tmp = find_id (handle);
+
+	if (!tmp)
+		goto inv_handle;
+
+	switch (rc = DosFreeModule (tmp->handle))
+	{
+		case NO_ERROR:
+			free (tmp->name);
+			dlload = tmp->next;
+			free (tmp);
+			return (0);
+		case ERROR_INVALID_HANDLE:
+inv_handle:
+			strcpy(dlerr, "invalid module handle");
+			return (-1);
+		case ERROR_INVALID_ACCESS:
+			strcpy (dlerr, "access denied");
+			return (-1);
+		default:
+			return (-1);
+	}
+}
+
+/* return a string describing last occured dl error */
+char *dlerror()
+{
+	return (dlerr);
+}