Date: Fri, 31 Dec 2004 04:14:09 +0900

From: Hayashi Naoyuki
Subject: SDL patch for Tru64 UNIX 4.0X

SDL-1.2.8 support only Tru64 5.X.
This patch is for Tru64 UNIX 4.X.(tested on Tru64 UNIX 4.0G and 5.1B)

SDL-1.2.8/configure.in:
ld doesn't accept -pthread option.
cc -pthread has same effect as -D_REENTRANT when compiling,
and has same effect as -lpthread -lexc when linking.

SDL-1.2.8/include/begin_code.h:
Old Compaq C Compiler accept not inline but __inline.

SDL-1.2.8/src/audio/SDL_mixer_MMX.c:
SDL-1.2.8/src/audio/SDL_mixer_MMX.h:
Old Compaq C Compiler doesn't accept //.

SDL-1.2.8/src/cdrom/osf/SDL_syscdrom.c:
When becoming Tru64 v5.0 from Tru64 v4.0,
the arrangement of the cd-rom device was changed.

configure.in

@@ -1280,12 +1280,11 @@ CheckPTHREAD()
             pthread_lib=""
             ;;
         *-*-osf*)
+            pthread_cflags="-D_REENTRANT"
             if test x$ac_cv_prog_gcc = xyes; then
-                pthread_cflags="-D_REENTRANT"
                 pthread_lib="-lpthread -lrt"
             else
-                pthread_cflags="-pthread"
-                pthread_lib="-lpthread -lrt"
+                pthread_lib="-lpthread -lexc -lrt"
             fi
             ;;
         *)

include/begin_code.h

@@ -102,7 +102,8 @@
 /* Add any special compiler-specific cases here */
 #if defined(_MSC_VER) || defined(__BORLANDC__) || \
     defined(__DMC__) || defined(__SC__) || \
-    defined(__WATCOMC__) || defined(__LCC__)
+    defined(__WATCOMC__) || defined(__LCC__) || \
+    defined(__DECC)
 #ifndef __inline__
 #define __inline__	__inline
 #endif

src/audio/SDL_mixer_MMX.c

@@ -1,14 +1,16 @@
-// MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
-// Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
-// This code is licensed under the LGPL (see COPYING for details)
-// 
-// Assumes buffer size in bytes is a multiple of 16
-// Assumes SDL_MIX_MAXVOLUME = 128
-
-
-////////////////////////////////////////////////
-// Mixing for 16 bit signed buffers
-////////////////////////////////////////////////
+/*
+    MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
+    Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
+    This code is licensed under the LGPL (see COPYING for details)
+ 
+    Assumes buffer size in bytes is a multiple of 16
+    Assumes SDL_MIX_MAXVOLUME = 128
+*/
+
+
+/***********************************************
+*   Mixing for 16 bit signed buffers
+***********************************************/
 
 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
 void SDL_MixAudio_MMX_S16(char* dst,char* src,unsigned int size,int volume)

src/audio/SDL_mixer_MMX.h

@@ -1,9 +1,11 @@
-// headers for MMX assembler version of SDL_MixAudio
-// Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
-// This code is licensed under the LGPL (see COPYING for details)
-// 
-// Assumes buffer size in bytes is a multiple of 16
-// Assumes SDL_MIX_MAXVOLUME = 128
+/*
+    headers for MMX assembler version of SDL_MixAudio
+    Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
+    This code is licensed under the LGPL (see COPYING for details)
+
+    Assumes buffer size in bytes is a multiple of 16
+    Assumes SDL_MIX_MAXVOLUME = 128
+*/
 
 
 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)

src/cdrom/osf/SDL_syscdrom.c

@@ -22,9 +22,10 @@
 
 /* Functions for system-level CD-ROM audio control */
 
-//#define DEBUG_CDROM 1
+/* #define DEBUG_CDROM 1 */
 
 #include <sys/types.h>
+#include <dirent.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <io/cam/cdrom.h>
@@ -141,11 +142,22 @@ static void AddDrive(char *drive, struct stat *stbuf)
 
 int  SDL_SYS_CDInit(void)
 {
-    /* checklist: /dev/rdisk/cdrom?c
+    /* checklist:
+     *
+     * Tru64 5.X (/dev/rdisk/cdrom?c)
+     * dir: /dev/rdisk, name: cdrom
+     *
+     * Digital UNIX 4.0X (/dev/rrz?c)
+     * dir: /dev, name: rrz
      *
      */
-    static char *checklist[] = {
-	"?0 rdisk/cdrom?",NULL};
+    struct {
+	char *dir;
+	char *name;
+    } checklist[] = {
+	{"/dev/rdisk", "cdrom"},
+	{"/dev", "rrz"},
+	{NULL, NULL}};
     char drive[32];
     char *SDLcdrom;
     int i, j, exists;
@@ -195,37 +207,32 @@ int  SDL_SYS_CDInit(void)
 	}
     }
     /* Scan the system for CD-ROM drives */
-    for ( i=0; checklist[i]; ++i ) {
-	if ( checklist[i][0] == '?' ) {
-	    char *insert;
-	    exists = 1;
-	    for ( j=checklist[i][1]; exists; ++j ) {
-		sprintf(drive, "/dev/%sc", &checklist[i][3]);
-		insert = strchr(drive, '?');
-		if ( insert != NULL ) {
-		    *insert = j;
-		}
-		switch (CheckDrive(drive, &stbuf)) {
-		    /* Drive exists and is a CD-ROM */
-		    case 1:
-			AddDrive(drive, &stbuf);
-			break;
-			/* Drive exists, but isn't a CD-ROM */
-		    case 0:
-			break;
-			/* Drive doesn't exist */
-		    case -1:
-			exists = 0;
-			break;
-		}
-	    }
+    for ( i = 0; checklist[i].dir; ++i) {
+	DIR *devdir;
+	struct dirent *devent;
+	int name_len;
+
+	devdir = opendir(checklist[i].dir);
+	if (devdir) {
+	    name_len = strlen(checklist[i].name);
+	    while (devent = readdir(devdir))
+		if (memcmp(checklist[i].name, devent->d_name, name_len) == 0)
+		    if (devent->d_name[devent->d_namlen-1] == 'c') {
+			sprintf(drive, "%s/%s", checklist[i].dir, devent->d_name);
+#ifdef DEBUG_CDROM
+			fprintf(stderr, "Try to add drive: %s\n", drive);
+#endif
+			if ( CheckDrive(drive, &stbuf) > 0 )
+			    AddDrive(drive, &stbuf);
+		    }
+	    closedir(devdir);
 	} else {
-	    sprintf(drive, "/dev/%s", checklist[i]);
-	    if ( CheckDrive(drive, &stbuf) > 0 ) {
-		AddDrive(drive, &stbuf);
-	    }
+#ifdef DEBUG_CDROM
+	    fprintf(stderr, "cannot open dir: %s\n", checklist[i].dir);
+#endif
 	}
     }
+
 /*
     SDLcdrom=malloc(sizeof(char) * 32);
     strcpy(SDLcdrom,"/dev/rdisk/cdrom0c");