From 8df8626ebdb61a67db991daf7ec3de4bda550d3e Mon Sep 17 00:00:00 2001
From: Yoshihiro Takahashi <nyan@FreeBSD.org>
Date: Fri, 18 Jan 2002 09:00:38 +0000
Subject: [PATCH] Added kgzldr for pc98. crt.s is based on btx.s.

---
 sys/boot/pc98/Makefile        |   2 +-
 sys/boot/pc98/kgzldr/Makefile |  37 +++++++++++
 sys/boot/pc98/kgzldr/crt.s    | 118 ++++++++++++++++++++++++++++++++++
 3 files changed, 156 insertions(+), 1 deletion(-)
 create mode 100644 sys/boot/pc98/kgzldr/Makefile
 create mode 100644 sys/boot/pc98/kgzldr/crt.s

diff --git a/sys/boot/pc98/Makefile b/sys/boot/pc98/Makefile
index b86e09fe94ad..d63cb4c2e0a4 100644
--- a/sys/boot/pc98/Makefile
+++ b/sys/boot/pc98/Makefile
@@ -1,5 +1,5 @@
 # $FreeBSD$
 
-SUBDIR=		btx boot0 boot0.5 boot2 libpc98 loader
+SUBDIR=		btx boot0 boot0.5 boot2 kgzldr libpc98 loader
 
 .include <bsd.subdir.mk>
diff --git a/sys/boot/pc98/kgzldr/Makefile b/sys/boot/pc98/kgzldr/Makefile
new file mode 100644
index 000000000000..89104980ba68
--- /dev/null
+++ b/sys/boot/pc98/kgzldr/Makefile
@@ -0,0 +1,37 @@
+# $FreeBSD$
+
+PROG=	kgzldr.o
+SRCS=	start.s boot.c inflate.c lib.c crt.s sio.s
+CFLAGS=	-fno-builtin
+.if ${OBJFORMAT} == aout
+CFLAGS+=-O2
+.else
+CFLAGS+=-Os
+.endif
+CFLAGS+=-DKZIP
+LDFLAGS=-nostdlib -static -r
+NOMAN=
+BINDIR=	/usr/lib
+BINMODE=444
+STRIP=
+.PATH:	${.CURDIR}/../../../kern
+
+.PATH:	${.CURDIR}/../../i386/kgzldr
+AFLAGS+=--defsym PC98=1
+
+M4?=	m4
+M4FLAGS=-DOBJFORMAT=${OBJFORMAT}
+
+BOOT_COMCONSOLE_PORT?=	0x238
+M4FLAGS+=-DSIOPRT=${BOOT_COMCONSOLE_PORT}
+
+all: kgzldr.o
+
+kgzldr.o: ${OBJS}
+	${CC} ${LDFLAGS} -o ${.TARGET} ${OBJS}
+
+.s.o:
+	(cd ${.CURDIR}; ${M4} ${M4FLAGS} ../../i386/kgzldr/kgzldr.m4 ${.IMPSRC}) |\
+		${AS} ${AFLAGS} -o ${.TARGET}
+
+.include <bsd.prog.mk>
diff --git a/sys/boot/pc98/kgzldr/crt.s b/sys/boot/pc98/kgzldr/crt.s
new file mode 100644
index 000000000000..466ec297cbfd
--- /dev/null
+++ b/sys/boot/pc98/kgzldr/crt.s
@@ -0,0 +1,118 @@
+#
+# Copyright (c) 1999 Global Technology Associates, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#	From: btx.s 1.10 1999/02/25 16:27:41 rnordier
+# $FreeBSD$
+#
+
+# Screen defaults and assumptions.
+
+.`ifdef' PC98
+		.set SCR_MAT,0xe1		# Mode/attribute
+.else
+		.set SCR_MAT,0x7		# Mode/attribute
+.endif
+		.set SCR_COL,0x50		# Columns per row
+		.set SCR_ROW,0x19		# Rows per screen
+
+# BIOS Data Area locations.
+
+.`ifdef' PC98
+		.set BDA_POS,0x53e		# Cursor position
+.else
+		.set BDA_SCR,0x449		# Video mode
+		.set BDA_POS,0x450		# Cursor position
+.endif
+
+		.globl _(crt_putchr)
+
+# void crt_putchr(int c)
+
+_(crt_putchr): 	movb 0x4(%esp,1),%al		# Get character
+		pusha				# Save
+		xorl %ecx,%ecx			# Zero for loops
+		movb $SCR_MAT,%ah		# Mode/attribute
+		movl $BDA_POS,%ebx		# BDA pointer
+		movw (%ebx),%dx 		# Cursor position
+.`ifdef' PC98
+		movl $0xa0000,%edi
+.else
+		movl $0xb8000,%edi		# Regen buffer (color)
+		cmpb %ah,BDA_SCR-BDA_POS(%ebx)	# Mono mode?
+		jne crt_putchr.1		# No
+		xorw %di,%di			# Regen buffer (mono)
+.endif
+crt_putchr.1:	cmpb $0xa,%al			# New line?
+		je crt_putchr.2			# Yes
+.`ifdef' PC98
+		movw %dx,%cx
+		movb %al,(%edi,%ecx,1)		# Write char
+		addl $0x2000,%ecx
+		movb %ah,(%edi,%ecx,1)		# Write attr
+		addw $0x02,%dx
+		jmp putchr.3
+putchr.2:	movw %dx,%ax
+		movb $SCR_COL*2,%dl
+		div %dl
+		incb %al
+		mul %dl
+		movw %ax,%dx
+putchr.3:	cmpw $SCR_ROW*SCR_COL*2,%dx
+.else
+		xchgl %eax,%ecx 		# Save char
+		movb $SCR_COL,%al		# Columns per row
+		mulb %dh			#  * row position
+		addb %dl,%al			#  + column
+		adcb $0x0,%ah			#  position
+		shll %eax			#  * 2
+		xchgl %eax,%ecx 		# Swap char, offset
+		movw %ax,(%edi,%ecx,1)		# Write attr:char
+		incl %edx			# Bump cursor
+		cmpb $SCR_COL,%dl		# Beyond row?
+		jb crt_putchr.3			# No
+crt_putchr.2:	xorb %dl,%dl			# Zero column
+		incb %dh			# Bump row
+crt_putchr.3:	cmpb $SCR_ROW,%dh		# Beyond screen?
+.endif
+		jb crt_putchr.4			# No
+		leal 2*SCR_COL(%edi),%esi	# New top line
+		movw $(SCR_ROW-1)*SCR_COL/2,%cx # Words to move
+		rep				# Scroll
+		movsl				#  screen
+		movb $' ',%al			# Space
+.`ifdef' PC98
+		xorb %ah,%ah
+.endif
+		movb $SCR_COL,%cl		# Columns to clear
+		rep				# Clear
+		stosw				#  line
+.`ifdef' PC98
+		movw $(SCR_ROW-1)*SCR_COL*2,%dx
+.else
+		movb $SCR_ROW-1,%dh		# Bottom line
+.endif
+crt_putchr.4:	movw %dx,(%ebx) 		# Update position
+		popa				# Restore
+		ret				# To caller