4e86394e3d
The .init section for global constructors in the kernel is unused at the moment as the _init function is never invoked, but its existence means it got linked at 128 MiB on i686. This address isn't mapped by the kernel and the bootloader requires the machine to have that much physical memory. Unfortunately that meant the i686 build didn't work on machines with less than 129 MiB of memory.
246 lines
4.9 KiB
Makefile
246 lines
4.9 KiB
Makefile
SOFTWARE_MEANT_FOR_SORTIX=1
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include ../build-aux/platform.mak
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include ../build-aux/compiler.mak
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include ../build-aux/version.mak
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include ../build-aux/dirs.mak
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# Default values in case the user doesn't override these variables.
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OPTLEVEL?=$(DEFAULT_OPTLEVEL)
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CPPFLAGS?=
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CXXFLAGS?=$(OPTLEVEL)
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# Base compiler options and definitions.
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CPPFLAGS:=$(CPPFLAGS) -I. -Iinclude -D__is_sortix_kernel
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CXXFLAGS:=$(CXXFLAGS) -Wall -Wextra -ffreestanding -fbuiltin -std=gnu++11 \
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-fno-exceptions -fno-rtti
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ifeq ($(PANIC_SHORT),1)
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CPPFLAGS:=$(CPPFLAGS) -DPANIC_SHORT
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endif
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ifdef VERSION
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CPPFLAGS:=$(CPPFLAGS) -DVERSIONSTR=\"$(VERSION)\"
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endif
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# Architecture-dependent options and definitions.
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BOOTOBJS:=
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ifeq ($(CPU),x86)
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X86FAMILY:=1
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CPUDIR:=$(CPU)
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CPUOBJS:=$(CPUDIR)/boot.o
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endif
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ifeq ($(CPU),x64)
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X86FAMILY:=1
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CPUDIR:=$(CPU)
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CXXFLAGS:=$(CXXFLAGS) -mno-red-zone -mno-mmx -mno-sse -mno-sse2
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CPUOBJS:=$(CPUDIR)/boot.o
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endif
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ifndef CPUDIR
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CPUDIR=.
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endif
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ifdef X86FAMILY
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CPUOBJS:=$(CPUOBJS) \
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$(CPUDIR)/memorymanagement.o \
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x86-family/memorymanagement.o \
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$(CPUDIR)/interrupt.o \
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x86-family/interrupt.o \
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x86-family/ioport.o \
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x86-family/pic.o \
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x86-family/gdt.o \
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x86-family/idt.o \
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$(CPUDIR)/syscall.o \
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x86-family/cmos.o \
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x86-family/time.o \
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x86-family/pat.o \
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x86-family/float.o \
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x86-family/ps2.o \
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x86-family/vbox.o \
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x86-family/x86-family.o
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endif
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# Object files that constitute the kernel.
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CRTI_OBJ=$(CPUDIR)/crti.o
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CRTBEGIN_OBJ=$(shell $(CXX) $(CXXFLAGS) -print-file-name=crtbegin.o)
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CRTEND_OBJ=$(shell $(CXX) $(CXXFLAGS) -print-file-name=crtend.o)
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CRTN_OBJ=$(CPUDIR)/crtn.o
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LIBS=\
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-nostdlib \
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-lk \
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-lgcc \
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OBJS=\
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$(CPUOBJS) \
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addralloc.o \
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alarm.o \
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clock.o \
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com.o \
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copy.o \
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descriptor.o \
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disk/ahci/ahci.o \
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disk/ahci/hba.o \
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disk/ahci/port.o \
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disk/ata/ata.o \
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disk/ata/hba.o \
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disk/ata/port.o \
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disk/node.o \
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dnsconfig.o \
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dtable.o \
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elf.o \
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fcache.o \
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fs/full.o \
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fsfunc.o \
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fs/kram.o \
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fs/null.o \
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fs/random.o \
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fs/user.o \
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fs/util.o \
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fs/zero.o \
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gpu/bga/bga.o \
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hostname.o \
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identity.o \
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initrd.o \
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inode.o \
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interlock.o \
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interrupt.o \
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ioctx.o \
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io.o \
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kb/kblayout.o \
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kb/ps2.o \
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kernelinfo.o \
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kernel.o \
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kthread.o \
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lfbtextbuffer.o \
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libk.o \
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linebuffer.o \
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log.o \
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logterminal.o \
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memorymanagement.o \
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mouse/ps2.o \
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mtable.o \
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net/fs.o \
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net/socket.o \
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op-new.o \
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panic.o \
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partition.o \
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pci-mmio.o \
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pci.o \
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pipe.o \
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poll.o \
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process.o \
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psctl.o \
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ptable.o \
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pty.o \
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random.o \
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refcount.o \
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registers.o \
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resource.o \
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scheduler.o \
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segment.o \
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signal.o \
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sockopt.o \
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string.o \
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syscall.o \
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textbuffer.o \
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textterminal.o \
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thread.o \
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time.o \
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timer.o \
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tty.o \
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uart.o \
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user-timer.o \
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vga.o \
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vgatextbuffer.o \
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video.o \
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vnode.o \
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worker.o \
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ALLOBJS=\
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$(CRTI_OBJ) \
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$(OBJS) \
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$(CRTN_OBJ) \
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end.o
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# TODO: The .init section is linked at 128 MiB on i686 and at 4 MiB on x86_64
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# which increases the memory requirement (and isn't mapped) and the _init
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# function isn't invoked yet in the kernel anyway.
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#LINK_OBJECTS=\
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#$(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OBJS) $(LIBS) $(CRTN_OBJ) $(CRTEND_OBJ) end.o
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LINK_OBJECTS=$(OBJS) $(LIBS) end.o
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# Rules and recipes for building the kernel.
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all: kernel
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kernel: sortix.bin
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.PHONY: all kernel headers clean install install-include-dirs install-headers \
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install-kernel install-kernel-binary
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headers:
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# x64 compilation
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ifeq ($(CPU),x64)
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sortix-x86_64.bin: $(ALLOBJS)
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$(CXX) $(CXXFLAGS) -Wl,-Ttext -Wl,100000 -Wl,-z -Wl,max-page-size=0x1000 $(LINK_OBJECTS) -o $@
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sortix.bin: sortix-x86_64.bin
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$(OBJCOPY) $< -O elf32-i386-sortix $@
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endif
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# x86 compilation
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ifeq ($(CPU),x86)
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sortix.bin: $(ALLOBJS)
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$(CXX) $(CXXFLAGS) -Wl,-Ttext -Wl,100000 $(LINK_OBJECTS) -o $@
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endif
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%: %.kblayout
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kblayout-compiler --format=sortix-kblayout-1 --compression=none $< -o $@
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# TODO: After releasing Sortix 1.1, change --identifier to -i.
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kb/default-kblayout.h: kb/default-kblayout
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carray -cgHs -t uint8_t -G SORTIX_KB_DEFAULT_KBLAYOUT_H --identifier=default_kblayout $< -o $@
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vgafont.h: vgafont.f16
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carray -gHs -t uint8_t -G VGAFONT_H --identifier=vgafont $< -o $@
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*.cpp */*.cpp */*/*.cpp: | kb/default-kblayout.h vgafont.h
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%.o: %.cpp
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$(CXX) -c $< -o $@ $(CPPFLAGS) $(CXXFLAGS)
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%.o: %.S
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$(CXX) -c $< -o $@ $(CPPFLAGS) $(CXXFLAGS)
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clean:
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rm -f $(ALLOBJS) sortix.bin
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rm -f *.bin *.out *.tmp
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rm -f *.o */*.o */*/*.o
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rm -f kb/default-kblayout kb/default-kblayout.h
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rm -f vgafont.h
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# Installation into sysroot
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install: install-headers install-kernel
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install-include-dirs: headers
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mkdir -p $(DESTDIR)$(INCLUDEDIR)
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install-headers: install-include-dirs headers
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cp -RTv include $(DESTDIR)$(INCLUDEDIR)
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install-kernel: install-kernel-binary
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install-kernel-binary: sortix.bin
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mkdir -p $(DESTDIR)$(BOOTDIR)
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cp sortix.bin $(DESTDIR)$(BOOTDIR)/sortix.bin
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