From 91d411a98977786fc67ad12838245fa4ab99220d Mon Sep 17 00:00:00 2001
From: abs <abs>
Date: Thu, 26 Jul 2012 22:10:28 +0000
Subject: Fake up a much more complete TOC based on real CD image. Now works
 with NetBSD 4, 5 & 6 which would have previously failed.

Comment out some unusual sector subtractions which handled values in the
multigigabyte range.

Now allows all tested NetBSD versions (3, 4, 5 & 6) to mount ISO images
---
 emulators/gxemul/Makefile                          |  4 +-
 emulators/gxemul/distinfo                          | 10 +--
 .../patch-src_devices_dev__dreamcast__gdrom.cc     | 87 ++++++++++++++++++++++
 3 files changed, 91 insertions(+), 10 deletions(-)
 create mode 100644 emulators/gxemul/patches/patch-src_devices_dev__dreamcast__gdrom.cc

(limited to 'emulators/gxemul')

diff --git a/emulators/gxemul/Makefile b/emulators/gxemul/Makefile
index bc1a7e24d13..3f128994103 100644
--- a/emulators/gxemul/Makefile
+++ b/emulators/gxemul/Makefile
@@ -1,7 +1,7 @@
-# $NetBSD: Makefile,v 1.46 2012/07/16 00:19:14 abs Exp $
+# $NetBSD: Makefile,v 1.47 2012/07/26 22:10:28 abs Exp $
 
 DISTNAME=	gxemul-0.6.0
-PKGREVISION=	2
+PKGREVISION=	3
 CATEGORIES=	emulators
 MASTER_SITES=	http://gxemul.sourceforge.net/src/
 
diff --git a/emulators/gxemul/distinfo b/emulators/gxemul/distinfo
index 27530bfecbe..31d78842a3d 100644
--- a/emulators/gxemul/distinfo
+++ b/emulators/gxemul/distinfo
@@ -1,12 +1,6 @@
-$NetBSD: distinfo,v 1.36 2012/07/16 00:19:14 abs Exp $
+$NetBSD: distinfo,v 1.37 2012/07/26 22:10:28 abs Exp $
 
 SHA1 (gxemul-0.6.0.tar.gz) = aa37ad5f200eee045b1da2b1d3f651401cf474af
 RMD160 (gxemul-0.6.0.tar.gz) = ac6291a5f8bc9c0d1988d3ce39750339fe90a8ce
 Size (gxemul-0.6.0.tar.gz) = 3598795 bytes
-SHA1 (patch-aa) = 6f2c0dc94606ba213bcc73527ea4bef997c89c45
-SHA1 (patch-ab) = ebd64a2b56cd4140522c567b90dcbfb9440b9db2
-SHA1 (patch-ad) = a8757e7397ec3cc301d02bdf93654f55d558d29f
-SHA1 (patch-ae) = 19ef822c16f0f6dd50aea719e0bc797c39d1f9c0
-SHA1 (patch-af) = 8304ff5d8f779ac60f8d416d27e0a183e0e47d94
-SHA1 (patch-ag) = 9d13bf6f6e6038e114a45cfbd03e4e52ac60d2c7
-SHA1 (patch-configure) = b7cacc97ffdeb127be196a7d352ee82b673d4026
+SHA1 (patch-src_devices_dev__dreamcast__gdrom.cc) = 3e9abc13118fb79473adb11156f73c93b13b6dd8
diff --git a/emulators/gxemul/patches/patch-src_devices_dev__dreamcast__gdrom.cc b/emulators/gxemul/patches/patch-src_devices_dev__dreamcast__gdrom.cc
new file mode 100644
index 00000000000..cf7c2bc433c
--- /dev/null
+++ b/emulators/gxemul/patches/patch-src_devices_dev__dreamcast__gdrom.cc
@@ -0,0 +1,87 @@
+$NetBSD: patch-src_devices_dev__dreamcast__gdrom.cc,v 1.1 2012/07/26 22:10:28 abs Exp $
+
+Fake up a much more complete TOC based on real CD image.
+Now works with NetBSD 4, 5 & 6 which would have previously failed.
+
+Comment out some unusual sector subtractions which handled values in the
+multigigabyte range.
+
+--- src/devices/dev_dreamcast_gdrom.cc.orig	2010-02-14 09:33:52.000000000 +0000
++++ src/devices/dev_dreamcast_gdrom.cc
+@@ -109,12 +109,37 @@ static void handle_command(struct cpu *c
+ 		}
+ 		alloc_data(d);
+ 
+-		/*  TODO: Fill TOC in a better way  */
+-		d->data[99*4] = 1;	/*  First track  */
+-		d->data[100*4] = 2;	/*  Last track  */
++		/*
++		TOC from test booted real CD image on NetBSD/dreamcast
++		01000096,41002e4c,ffffffff * 97,01010000,41020000,6100e641,
++		*/
++		memset(d->data, 0xff, d->cnt); /* Default data to 0xff */
++
++		d->data[0*4]   = 0x10;	/* Track 1 */
++		d->data[0*4+1] = 0;
++		d->data[0*4+2] = 0;
++		d->data[0*4+3] = 0x96;
++
++		d->data[1*4]   = 0x41;	/* Track 2 */
++		d->data[1*4+1] = 0;
++		d->data[1*4+2] = 0x2e;
++		d->data[1*4+3] = 0x4c;
++
++		d->data[99*4]   = 0x01;	/*  First track  */
++		d->data[99*4+1] = 0x01;
++		d->data[99*4+2] = 0;
++		d->data[99*4+3] = 0;
++
++		d->data[100*4]   = 0x41; /*  Last track  */
++		d->data[100*4+1] = 0x02;
++		d->data[100*4+2] = 0;
++		d->data[100*4+3] = 0;
++
++		d->data[101*4]   = 0x61; /*  Leadout  */
++		d->data[101*4+1] = 0;
++		d->data[101*4+2] = 0xe6;
++		d->data[101*4+3] = 0x41;
+ 
+-		d->data[0*4] = 0x10;	/*  Track 1  */
+-		d->data[1*4] = 0x10;	/*  Track 2  */
+ 		break;
+ 
+ 	case 0x30:
+@@ -126,6 +151,7 @@ static void handle_command(struct cpu *c
+ 		}
+ 		sector_nr = d->cmd[2] * 65536 + d->cmd[3] * 256 + d->cmd[4];
+ 		sector_count = d->cmd[8] * 65536 + d->cmd[9] * 256 + d->cmd[10];
++
+ 		if (d->cnt == 0)
+ 			d->cnt = 65536;
+ 		alloc_data(d);
+@@ -136,9 +162,17 @@ static void handle_command(struct cpu *c
+ 		}
+ 
+ {
++
++/* Definitely not needed for NetBSD - unknown if needed for anything else? */
++#if 0
+ if (sector_nr >= 1376810)
+ 	sector_nr -= 1376810;
++#endif
++
+ sector_nr -= 150;
++
++/* Definitely not needed for NetBSD - unknown if needed for anything else? */
++#if 0
+ if (sector_nr > 1048576)
+ 	sector_nr -= 1048576;
+ /*  printf("sector nr = %i\n", (int)sector_nr);  */
+@@ -146,6 +180,7 @@ if (sector_nr > 1048576)
+ if (sector_nr < 1000)
+ 	sector_nr += (diskimage_get_baseoffset(cpu->machine, 0, DISKIMAGE_IDE)
+ 	 / 2048);
++#endif
+ }
+ 
+ 		res = diskimage_access(cpu->machine, 0, DISKIMAGE_IDE,
-- 
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