7d39906acc
This code uses the cr0 task switched bit to disable the FPU upon task switch, which allows the kernel to delay copying the registers until another task starts using them. Or better yet, if no other thread actually uses the registers, then it won't need to do any copying at all!
203 lines
4 KiB
Makefile
203 lines
4 KiB
Makefile
ifndef O
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O:=-O3
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endif
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ifndef CPU
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CPU=x86
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endif
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ifeq ($(CPU),x86)
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BUILDID=x86
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X86FAMILY=1
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CPUDEFINES=-DPLATFORM_X86
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CPUFLAGS=-m32
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CPULDFLAGS=-melf_i386
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CPUASFLAGS=-32
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CPUNASMFLAGS=-felf32
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CPUOBJS=$(CPU)/boot.o $(CPU)/base.o $(CPU)/x86.o
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endif
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ifeq ($(CPU),x64)
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BUILDID=x64
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X86FAMILY=1
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CPUDEFINES=-DPLATFORM_X64
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CPUFLAGS=-m64 -ffreestanding -mno-red-zone
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CPULDFLAGS=-melf64-little -z max-page-size=0x1000
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CPUASFLAGS=-64
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CPUNASMFLAGS=-felf64
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CPUOBJS=$(CPU)/base.o $(CPU)/x64.o
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endif
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ifdef X86FAMILY
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CPUOBJS:=$(CPUOBJS) \
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$(CPU)/memorymanagement.o \
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x86-family/memorymanagement.o \
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$(CPU)/interrupt.o \
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$(CPU)/gdt.o \
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x86-family/gdt.o \
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$(CPU)/idt.o \
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x86-family/idt.o \
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$(CPU)/syscall.o \
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$(CPU)/thread.o \
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$(CPU)/scheduler.o \
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$(CPU)/process.o \
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x86-family/msr.o \
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x86-family/float.o \
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x86-family/x86-family.o
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CPUFLAGS:=$(CPUFLAGS) -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow
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endif
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DIRS=. x64 x86 x86-family fs kb kb/layout
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DEFINES:=-DSORTIX_KERNEL -U_GNU_SOURCE $(CPUDEFINES)
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ifeq ($(JSSORTIX),1)
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DEFINES:=$(DEFINES) -DPLATFORM_SERIAL -DJSSORTIX
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BUILDID:=$(BUILDID)-js
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endif
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ifeq ($(PANIC_SHORT),1)
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DEFINES:=$(DEFINES) -DPANIC_SHORT
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endif
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ifeq ($(DISKWRITE),1)
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DEFINES:=$(DEFINES) -DENABLE_DISKWRITE=1
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else
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DEFINES:=$(DEFINES) -DENABLE_DISKWRITE=0
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endif
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ifeq ($(CALLTRACE),1)
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DEFINES:=$(DEFINES) -DENABLE_CALLTRACE=1
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else
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DEFINES:=$(DEFINES) -DENABLE_CALLTRACE=0
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endif
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ifdef VERSION
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DEFINES:=$(DEFINES) -DVERSIONSTR=\"$(VERSION)\"
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endif
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INCLUDES=-I. -Iinclude -I../libmaxsi/preproc
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CPPFLAGS=$(INCLUDES) $(DEFINES)
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ifeq ($(DEBUG_KERNEL),1)
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FLAGSDEBUG=-g3
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else
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FLAGSDEBUG=-s $(O)
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endif
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FLAGS=$(CPUFLAGS) -Wall -Wall -Wextra -nostdlib -fno-builtin -nostartfiles \
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-nodefaultlibs -fno-stack-protector $(FLAGSDEBUG)
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CFLAGS=$(FLAGS)
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CXXFLAGS=$(FLAGS) -std=gnu++0x -fno-exceptions -fno-rtti
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ASFLAGS=$(CPUASFLAGS)
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NASMFLAGS=$(CPUNASMFLAGS)
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STATICLIBS=\
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../libmaxsi/libmaxsi-sortix.a \
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HEADERDIRS:=$(shell find include -type d)
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HEADERS:=$(shell find include -type f)
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OBJS=$(CPUOBJS) \
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kernel.o \
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interrupt.o \
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worker.o \
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time.o \
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log.o \
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utf8.o \
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memorymanagement.o \
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calltrace.o \
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$(CPU)/calltrace.o \
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kthread.o \
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$(CPU)/kthread.o \
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interlock.o \
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$(CPU)/interlock.o \
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panic.o \
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keyboard.o \
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kb/ps2.o \
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kb/layout/us.o \
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scheduler.o \
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syscall.o \
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sound.o \
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pci.o \
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com.o \
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uart.o \
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terminal.o \
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linebuffer.o \
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logterminal.o \
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textterminal.o \
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serialterminal.o \
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textbuffer.o \
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vgatextbuffer.o \
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lfbtextbuffer.o \
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descriptors.o \
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device.o \
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refcount.o \
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video.o \
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bga.o \
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vga.o \
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kernelinfo.o \
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elf.o \
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process.o \
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initrd.o \
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thread.o \
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io.o \
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pipe.o \
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filesystem.o \
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directory.o \
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mount.o \
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signal.o \
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fs/util.o \
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fs/devfs.o \
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fs/initfs.o \
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fs/ramfs.o \
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fs/videofs.o \
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ata.o \
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$(STATICLIBS) \
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end.o # Must be last, determines kernel size.
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JSOBJS:=$(subst .o,-js.o,$(OBJS))
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all: sortix.bin
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# jssortix compilation
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jssortix: jssortix.bin
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sortix-x86-js.tmp: $(OBJS)
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ld -melf_i386 -Ttext 100000 -o sortix-x86-js-internal.out $(OBJS)
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objcopy -O binary sortix-x86-js-internal.out $@
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# x64 compilation
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x64/boot.o: x64/boot.s
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as -64 $< -o $@
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sortix-x64.tmp: $(OBJS) x64/boot.o
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ld -N -melf_x86_64 -Ttext 100000 -o sortix-x64-internal.out x64/boot.o $(OBJS)
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objcopy sortix-x64-internal.out -O elf32-i386 sortix-x64.tmp
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# x86 compilation
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sortix-x86.tmp: $(OBJS)
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ld -melf_i386 -Ttext 100000 -o $@ $(OBJS)
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# general rules
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sortix.bin: sortix-$(BUILDID).tmp
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cp -vu $< $@
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%.o: %.cpp
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g++ -c $< -o $@ $(CPPFLAGS) $(CXXFLAGS)
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%.o: %.s
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as $(ASFLAGS) $< -o $@
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%.o: %.asm
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nasm $(NASMFLAGS) $< -o $@
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clean:
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for D in $(DIRS); do rm -f $$D/*.o $$D/*.bin $$D/*.out $$D/*.tmp; done
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# Installation into sysroot
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install:
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for DIR in $(HEADERDIRS); do \
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mkdir -p $(SYSROOT)/usr/$$DIR; \
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done
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for FILE in $(HEADERS); do \
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cp $$FILE $(SYSROOT)/usr/$$FILE; \
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done
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