From cf1ec8a36f5b30066bb23c0ec89659e8d21509c2 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@etchedpixels.co.uk>
Date: Sat, 1 Nov 2014 15:40:33 +0000
Subject: [PATCH] Makefile: introduce the _VIDEO segment, rebalance CODE and
 CODE2

Not that the linker can bank the things yet...
---
 Kernel/Makefile | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/Kernel/Makefile b/Kernel/Makefile
index 34101151..542bc061 100644
--- a/Kernel/Makefile
+++ b/Kernel/Makefile
@@ -14,11 +14,13 @@ export CROSS_AS=sdasz80
 export CROSS_LD=sdldz80
 export CROSS_CC=sdcc
 #export CROSS_CCOPTS=-c --std-sdcc99 --no-std-crt0 -mz80 -I$(ROOT_DIR)/cpu-z80 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include --max-allocs-per-node 1000000 --opt-code-size --Werror --stack-auto --constseg CONST
-export CROSS_CCOPTS=-c --std-sdcc99 --no-std-crt0 -mz80 -I$(ROOT_DIR)/cpu-z80 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include --max-allocs-per-node 30000 --opt-code-size --Werror --stack-auto --constseg CONST
+export CROSS_CCOPTS=-c --std-sdcc99 --no-std-crt0 -mz80 -I$(ROOT_DIR)/cpu-z80 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include --max-allocs-per-node 200000 --opt-code-size --Werror --stack-auto --constseg CONST
+#export CROSS_CCOPTS=-c --std-sdcc99 --no-std-crt0 -mz80 -I$(ROOT_DIR)/cpu-z80 -I$(ROOT_DIR)/platform-$(TARGET) -I$(ROOT_DIR)/include --max-allocs-per-node 30000 --opt-code-size --Werror --stack-auto --constseg CONST
 #export CROSS_CCOPTS+=--nostdlib --nostdinc -Isdcclib/include 
 export CROSS_CC_SEG2=--codeseg CODE2
 export CROSS_CC_SEGDISC=--codeseg DISCARD
 export CROSS_CC_FONT=--constseg FONT
+export CROSS_CC_VIDEO=--codeseg VIDEO
 export ASOPTS=-plosff
 export BINEXT = .rel
 else ifeq ($(CPU),6502)
@@ -50,17 +52,21 @@ ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 #	be a linear chunk eg if you need to put the kernel in two non adjacent 16K
 #	chunks or compile it around a hole for videomemory or similar
 #
+#	VT and FONT are handled specially because they can be mapped more
+#	freely and also because you often want to overlay part of the kernel
+#	with the framebuffer when doing video output
+#
 
 CDSRCS = start.c
 C1SRCS =  version.c kdata.c filesys.c
-C1SRCS += inode.c syscall_fs.c
-C2SRCS =  devio.c process.c syscall_proc.c timer.c 
+C1SRCS += inode.c syscall_fs.c process.c usermem.c timer.c
+C2SRCS =  devio.c syscall_proc.c
 C2SRCS += syscall_fs2.c syscall_other.c
 C2SRCS += bank16k.c bank32k.c bankfixed.c single.c simple.c
-C2SRCS += vt.c tty.c devsys.c
-C2SRCS += mm.c swap.c usermem.c
-
-CFONTSRCS += font4x6.c font8x8.c
+C2SRCS += tty.c devsys.c
+C2SRCS += mm.c swap.c
+CVIDEOSRCS = vt.c
+CFONTSRCS = font4x6.c font8x8.c
 
 
 ASRCS =  lowlevel-$(CPU).s usermem_std-$(CPU).s
@@ -70,10 +76,11 @@ CDOBJS = $(CDSRCS:.c=$(BINEXT))
 C1OBJS = $(C1SRCS:.c=$(BINEXT))
 C2OBJS = $(C2SRCS:.c=$(BINEXT))
 CFONTOBJS = $(CFONTSRCS:.c=$(BINEXT))
+CVIDEOOBJS = $(CVIDEOSRCS:.c=$(BINEXT))
 AOBJS = $(ASRCS:.s=$(BINEXT))
 
-CSRCS = $(CDSRCS) $(C1SRCS) $(C2SRCS) $(CFONTSRCS)
-COBJS = $(CDOBJS) $(C1OBJS) $(C2OBJS) $(CFONTOBJS)
+CSRCS = $(CDSRCS) $(C1SRCS) $(C2SRCS) $(CFONTSRCS) $(CVIDEOSRCS)
+COBJS = $(CDOBJS) $(C1OBJS) $(C2OBJS) $(CFONTOBJS) $(CVIDEOOBJS)
 
 OBJS  = $(COBJS) $(AOBJS)
 
@@ -102,6 +109,9 @@ $(C2OBJS): %$(BINEXT): %.c
 $(CFONTOBJS): %$(BINEXT): %.c
 	$(CROSS_CC) $(CROSS_CCOPTS) $(CROSS_CC_FONT) $<
 
+$(CVIDEOOBJS): %$(BINEXT): %.c
+	$(CROSS_CC) $(CROSS_CCOPTS) $(CROSS_CC_VIDEO) $<
+
 $(AOBJS): %$(BINEXT): %.s
 	$(CROSS_AS) $(ASOPTS) -o $*$(BINEXT) $<
 
-- 
2.34.1