PowerPC PSIM simulator for FreeBSD/PowerPC kernel development.

Submitted by:	mp (emblishment by me)

14 files changed, 275 insertions, 0 deletions

diff --git a/emulators/Makefile b/emulators/Makefile
index f17e3aad6d1..b3372851f37 100644
--- a/emulators/Makefile
+++ b/emulators/Makefile
@@ -36,6 +36,7 @@
     SUBDIR += p-interp
     SUBDIR += pcemu
     SUBDIR += prodosemu
+    SUBDIR += psim-freebsd
     SUBDIR += qcl
     SUBDIR += quasi88
     SUBDIR += rtc
diff --git a/emulators/psim-freebsd/Makefile b/emulators/psim-freebsd/Makefile
new file mode 100644
index 00000000000..d6f36485ba2
--- /dev/null
+++ b/emulators/psim-freebsd/Makefile
@@ -0,0 +1,43 @@
+# ex:ts=8
+# Ports collection makefile for:	GDB 5.1 PowerPC simulator
+# Date created:				12 October 2001
+# Whom:					Mark Peek <mp@FreeBSD.org>
+# 					David O'Brien <obrien@NUXI.com>
+# $FreeBSD$
+#
+
+SNAPDATE=	2001-10-12
+SNAPVER=	${SNAPDATE:S/-//g}
+
+PORTNAME=	psim-freebsd
+PORTVERSION=	${SNAPVER}
+CATEGORIES=	emulators
+MASTER_SITES=	${MASTER_SITE_SOURCEWARE}
+MASTER_SITE_SUBDIR=	gdb/snapshots
+DISTNAME=	gdb+dejagnu-${SNAPVER}
+
+MAINTAINER=	mp@FreeBSD.org
+
+USE_BZIP2=	yes
+
+.include <bsd.port.pre.mk>
+
+USE_GMAKE=	yes
+GNU_CONFIGURE=	yes
+CONFIGURE_TARGET=	${ARCH}-portbld-freebsd${OSREL}
+CONFIGURE_ARGS=	--enable-psim --target=powerpc-freebsd-elf --program-suffix=psim
+
+pre-configure:
+	cd ${WRKSRC} ; ${RM} -rf dejagnu expect tcl texinfo
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/gdb/gdb ${PREFIX}/bin/${PORTNAME}
+	${MKDIR} ${PREFIX}/share/examples/${PORTNAME}
+	${INSTALL_DATA} ${FILESDIR}/dot.gdbinit \
+		${PREFIX}/share/examples/${PORTNAME}
+.if !defined(NOPORTDOCS)
+	@${MKDIR} ${DOCSDIR}
+	${INSTALL_DATA} ${FILESDIR}/HOW-TO ${DOCSDIR}
+.endif
+
+.include <bsd.port.post.mk>
diff --git a/emulators/psim-freebsd/distinfo b/emulators/psim-freebsd/distinfo
new file mode 100644
index 00000000000..5f727c648a8
--- /dev/null
+++ b/emulators/psim-freebsd/distinfo
@@ -0,0 +1 @@
+MD5 (gdb+dejagnu-20011012.tar.bz2) = 6e9dc1079113a64447b804018e8cfc07
diff --git a/emulators/psim-freebsd/files/HOW-TO b/emulators/psim-freebsd/files/HOW-TO
new file mode 100644
index 00000000000..1522bb9baaf
--- /dev/null
+++ b/emulators/psim-freebsd/files/HOW-TO
@@ -0,0 +1,69 @@
+$FreeBSD$
+
+Instructions for building and running the FreeBSD kernel under PSIM:
+
+1. On a FreeBSD system, check out a new source tree and run:
+	# cd src/sys/powerpc/conf
+	# config -g GENERIC
+
+2. On a NetBSD PPC system with the source NFS mounted, apply the Makefile.patch
+   to add the proper CWARN flags and remove the "-elf" flag.
+
+   Compile the kernel (your mount point may vary):
+	# make -m /mnt/share/mk MACHINE_ARCH=powerpc
+
+3. On the FreeBSD system, grap /usr/src/release/write_mfs_in_kernel.c and
+   run it using <http://people.freebsd.org/~mp/psim/ppcdisk.bz2> to add
+   the md image:
+
+	# ./write_mfs_in_kernel kernel.debug ppcdisk
+
+5. Run the simulator. The following .gdbinit is available as
+   /usr/local/share/examples/psim-freebsd/dot.gdbinit:
+
+	display/i $pc
+	define pglobal
+		print *(struct globaldata *)$sprg0
+	end
+	target sim -e chirp -r 33554432
+	set architecture powerpc:604
+	load
+
+# psim-freebsd kernel.debug 
+GNU gdb 20011012 (MI_OUT)
+Copyright 2001 Free Software Foundation, Inc.
+GDB is free software, covered by the GNU General Public License, and you are
+welcome to change it and/or distribute copies of it under certain conditions.
+Type "show copying" to see the conditions.
+There is absolutely no warranty for GDB.  Type "show warranty" for details.
+This GDB was configured as "--host=i386-portbld-freebsd5.0 --target=powerpc-freebsd-elf"...
+Connected to the simulator.
+The target architecture is assumed to be powerpc:604
+chirp: note descriptor missing load-base
+(gdb) b cpu_switch
+Breakpoint 1 at 0x1d8d58
+(gdb) run
+Starting program: /usr/vsrc/sys/powerpc/compile/GENERIC/kernel.debug 
+Copyright (c) 1992-2001 The FreeBSD Project.
+Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
+        The Regents of the University of California. All rights reserved.
+FreeBSD 5.0-CURRENT #0: Fri Oct 12 12:47:40 PDT 2001
+    root@netppc:/mnt/vsrc/sys/powerpc/compile/GENERIC
+CPU: PowerPC Version 0 (Revision 0)
+real memory  = 33554432 (32768K bytes)
+avail memory = 29794304 (29096K bytes)
+Timecounter "powerpc"  frequency 16666666 Hz
+rn_init: radix functions require max_keylen be set
+Mounting root from ufs:/dev/md0c
+
+Breakpoint 1, 0x001d8d58 in cpu_switch ()
+1: x/i $pc  0x1d8d58 <cpu_switch+24>:   mfsprg  r3,0
+(gdb) where
+#0  0x001d8d58 in cpu_switch ()
+#1  0x0014baa4 in mi_switch () at ../../../kern/kern_synch.c:765
+#2  0x0014af0c in msleep (ident=0x308cf8, mtx=0x0, priority=68, 
+    wmesg=0x1e27f8 "sched", timo=1000) at ../../../kern/kern_synch.c:484
+#3  0x001c0e58 in scheduler (dummy=0xcda) at ../../../vm/vm_glue.c:439
+#4  0x0011d720 in mi_startup () at ../../../kern/init_main.c:209
+#5  0x00114880 in kernel_text ()
+(gdb) 
diff --git a/emulators/psim-freebsd/files/README.patches b/emulators/psim-freebsd/files/README.patches
new file mode 100644
index 00000000000..cb5ea275581
--- /dev/null
+++ b/emulators/psim-freebsd/files/README.patches
@@ -0,0 +1,22 @@
+$FreeBSD$
+
+Patch comments:
+
+sim/ppc/emul_chirp.c:
+Add a mapping for the kernel to obtain the mapping for the
+OpenFirmware callback.
+
+sim/ppc/hw_cpu.c:
+Add the device type and timebase-frequency to the cpu device.
+Add code to create an instance of the cpu for the translation of the
+OpenFirmware callback.
+
+sim/ppc/hw_init.c:
+Allow the simulator to load a dynamically linked OEA environment.
+
+sim/ppc/hw_tab.c:
+Ignore warnings for the improper alignment of the htab. A better fix would be
+to properly align the htab when the memory is allocated in the first place.
+
+sim/ppc/ppc-spr-table:
+Correct 2 of the SPR entries to allow "info all-registers" to work when the
diff --git a/emulators/psim-freebsd/files/dot.gdbinit b/emulators/psim-freebsd/files/dot.gdbinit
new file mode 100644
index 00000000000..b4e6b167420
--- /dev/null
+++ b/emulators/psim-freebsd/files/dot.gdbinit
@@ -0,0 +1,7 @@
+display/i $pc
+define pglobal
+	print *(struct globaldata *)$sprg0
+end
+target sim -e chirp -r 33554432
+set architecture powerpc:604
+load
diff --git a/emulators/psim-freebsd/files/patch-emul_chirp.c b/emulators/psim-freebsd/files/patch-emul_chirp.c
new file mode 100644
index 00000000000..06b6ec622ed
--- /dev/null
+++ b/emulators/psim-freebsd/files/patch-emul_chirp.c
@@ -0,0 +1,15 @@
+diff -r -u sim/ppc/emul_chirp.c /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/emul_chirp.c
+--- sim/ppc/emul_chirp.c	Thu Apr 15 18:35:09 1999
++++ /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/emul_chirp.c	Sun Oct  7 16:16:57 2001
+@@ -1884,6 +1884,11 @@
+ 	       (unsigned long)chirp->sizeof_code);
+     tree_parse(node, "./wimg %d", 0x7);
+     tree_parse(node, "./pp %d", 0x2);
++    node = tree_parse(root, "/cpus/cpu@0");
++    tree_parse(node, "./translations 0x%lx 0x%lx 0x%0lx 0x%0lx 0x%0lx",
++	(unsigned long)chirp->code_va, (unsigned long)chirp->sizeof_code,
++	(unsigned long)chirp->code_ra, 0); 
++    node = tree_parse(root, "/chosen/mmu */cpus/cpu@0");
+   }
+ 
+   /* map in the program to run */
diff --git a/emulators/psim-freebsd/files/patch-hw_cpu.c b/emulators/psim-freebsd/files/patch-hw_cpu.c
new file mode 100644
index 00000000000..dedb2c75363
--- /dev/null
+++ b/emulators/psim-freebsd/files/patch-hw_cpu.c
@@ -0,0 +1,63 @@
+diff -r -u sim/ppc/hw_cpu.c /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_cpu.c
+--- sim/ppc/hw_cpu.c	Thu Apr 15 18:35:09 1999
++++ /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_cpu.c	Sun Oct  7 16:16:57 2001
+@@ -110,6 +110,8 @@
+ {
+   hw_cpu_device *hw_cpu = (hw_cpu_device*)device_data(me);
+   /* populate the node with properties */
++  device_add_string_property(me, "device_type", "cpu");
++  device_add_integer_property(me, "timebase-frequency", 0x00fe502a);
+   /* clear our data */
+   memset(hw_cpu, 0x0, sizeof(hw_cpu_device));
+   hw_cpu->cpu_nr = device_find_integer_property(me, "cpu-nr");
+@@ -148,6 +150,42 @@
+   }
+ }
+ 
++/* An instance of the cpu */
++  
++typedef struct _hw_cpu_instance {
++  unsigned_word pos;
++  hw_cpu_device *cpu;
++  device *me;
++} hw_cpu_instance;
++
++static void
++hw_cpu_instance_delete(device_instance *instance)
++{
++  hw_cpu_instance *data = device_instance_data(instance);
++  zfree(data);
++}
++
++static const device_instance_callbacks hw_cpu_instance_callbacks = {
++  hw_cpu_instance_delete,
++  NULL,
++  NULL,
++  NULL,
++};
++
++static device_instance *     
++hw_cpu_create_instance(device *me,    
++                          const char *path,
++                          const char *args)
++{
++  hw_cpu_device *cpu = device_data(me);
++  hw_cpu_instance *data = ZALLOC(hw_cpu_instance);
++  data->cpu = cpu;
++  data->me = me;
++  return device_create_instance_from(me, NULL,
++                                     data,
++                                     path, args,
++                                     &hw_cpu_instance_callbacks);
++}
+ 
+ static device_callbacks const hw_cpu_callbacks = {
+   { hw_cpu_init_address, }, /* init */
+@@ -156,6 +194,7 @@
+   { NULL, }, /* DMA */
+   { hw_cpu_interrupt_event, NULL, hw_cpu_interrupt_ports }, /* interrupts */
+   { NULL, NULL, },
++  hw_cpu_create_instance,
+ };
+ 
+ const device_descriptor hw_cpu_device_descriptor[] = {
diff --git a/emulators/psim-freebsd/files/patch-hw_init.c b/emulators/psim-freebsd/files/patch-hw_init.c
new file mode 100644
index 00000000000..e6481a876f8
--- /dev/null
+++ b/emulators/psim-freebsd/files/patch-hw_init.c
@@ -0,0 +1,13 @@
+diff -r -u sim/ppc/hw_init.c /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_init.c
+--- sim/ppc/hw_init.c	Thu May 10 10:48:10 2001
++++ /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_init.c	Fri Oct 12 11:31:51 2001
+@@ -350,7 +350,8 @@
+ 	  ));
+ 
+   /* If there is an .interp section, it means it needs a shared library interpreter.  */
+-  if (strcmp(".interp", bfd_get_section_name(abfd, the_section)) == 0)
++  if (current_environment != OPERATING_ENVIRONMENT
++      && strcmp(".interp", bfd_get_section_name(abfd, the_section)) == 0)
+     error("Shared libraries are not yet supported.\n");
+ 
+   /* determine the devices access */
diff --git a/emulators/psim-freebsd/files/patch-hw_tab.c b/emulators/psim-freebsd/files/patch-hw_tab.c
new file mode 100644
index 00000000000..d188e6d8796
--- /dev/null
+++ b/emulators/psim-freebsd/files/patch-hw_tab.c
@@ -0,0 +1,16 @@
+diff -r -u sim/ppc/hw_htab.c /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_htab.c
+--- sim/ppc/hw_htab.c	Thu Apr 15 18:35:09 1999
++++ /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/hw_htab.c	Sun Oct  7 16:16:57 2001
+@@ -224,10 +224,12 @@
+   }
+   *htaborg = htab_ra;
+   *htabmask = MASKED32(htab_nr_bytes - 1, 7, 31-6);
++#if 0
+   if ((htab_ra & INSERTED32(*htabmask, 7, 15)) != 0) {
+     device_error(parent, "htaborg 0x%lx not aligned to htabmask 0x%lx",
+ 		 (unsigned long)*htaborg, (unsigned long)*htabmask);
+   }
++#endif
+   DTRACE(htab, ("htab - htaborg=0x%lx htabmask=0x%lx\n",
+ 		(unsigned long)*htaborg, (unsigned long)*htabmask));
+ }
diff --git a/emulators/psim-freebsd/files/patch-ppc-spr-table b/emulators/psim-freebsd/files/patch-ppc-spr-table
new file mode 100644
index 00000000000..bfde32193fb
--- /dev/null
+++ b/emulators/psim-freebsd/files/patch-ppc-spr-table
@@ -0,0 +1,17 @@
+diff -r -u sim/ppc/ppc-spr-table /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/ppc-spr-table
+--- sim/ppc/ppc-spr-table	Thu Apr 15 18:35:11 1999
++++ /local2/gcc/ppc/gdb+dejagnu-20011007/sim/ppc/ppc-spr-table	Fri Oct 12 11:05:25 2001
+@@ -69,6 +69,7 @@
+ MMCR1:956:0:0
+ PMC3:957:0:0
+ PMC4:958:0:0
++SDA:959:0:0
+ DMISS:976:0:0
+ DCMP:977:0:0
+ HASH1:978:0:0
+@@ -85,4 +86,4 @@
+ THRM1:1020:0:0
+ THRM2:1021:0:0
+ THRM3:1022:0:0
+-HID15:1023:0:0
++PIR:1023:0:0
diff --git a/emulators/psim-freebsd/pkg-comment b/emulators/psim-freebsd/pkg-comment
new file mode 100644
index 00000000000..b74cbfba51b
--- /dev/null
+++ b/emulators/psim-freebsd/pkg-comment
@@ -0,0 +1 @@
+PowerPC simulator (PSIM) running in the GNU GDB 5
diff --git a/emulators/psim-freebsd/pkg-descr b/emulators/psim-freebsd/pkg-descr
new file mode 100644
index 00000000000..1728b5d2a5b
--- /dev/null
+++ b/emulators/psim-freebsd/pkg-descr
@@ -0,0 +1,3 @@
+PowerPC simulator (PSIM) running in the GNU GDB 5
+
+WWW:  http://sourceware.cygnus.com/psim/
diff --git a/emulators/psim-freebsd/pkg-plist b/emulators/psim-freebsd/pkg-plist
new file mode 100644
index 00000000000..5c48a29e76f
--- /dev/null
+++ b/emulators/psim-freebsd/pkg-plist
@@ -0,0 +1,4 @@
+@comment $FreeBSD$
+bin/psim-freebsd
+share/examples/psim-freebsd/dot.gdbinit
+%%PORTDOCS%%share/doc/psim-freebsd/HOW-TO