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001 ## Copyright (C) 2005 David Decotigny 001 ## Copyright (C) 2005 David Decotigny 002 ## 002 ## 003 ## This program is free software; you can redi 003 ## This program is free software; you can redistribute it and/or 004 ## modify it under the terms of the GNU Genera 004 ## modify it under the terms of the GNU General Public License 005 ## as published by the Free Software Foundatio 005 ## as published by the Free Software Foundation; either version 2 006 ## of the License, or (at your option) any lat 006 ## of the License, or (at your option) any later version. 007 ## 007 ## 008 ## This program is distributed in the hope tha 008 ## This program is distributed in the hope that it will be useful, 009 ## but WITHOUT ANY WARRANTY; without even the 009 ## but WITHOUT ANY WARRANTY; without even the implied warranty of 010 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 ## GNU General Public License for more details 011 ## GNU General Public License for more details. 012 ## 012 ## 013 ## You should have received a copy of the GNU 013 ## You should have received a copy of the GNU General Public License 014 ## along with this program; if not, write to t 014 ## along with this program; if not, write to the Free Software 015 ## Foundation, Inc., 59 Temple Place - Suite 3 015 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 ## USA. 016 ## USA. 017 017 018 CC=gcc 018 CC=gcc 019 AR=ar 019 AR=ar 020 OBJCOPY=objcopy << 021 CFLAGS = -Wall -nostdinc -ffreestanding -I. - 020 CFLAGS = -Wall -nostdinc -ffreestanding -I. -I.. 022 LIBGCC := $(shell $(CC) -print-libgcc-file-nam << 023 LDFLAGS = -Wl,--warn-common -nostdlib -Wl,-Tld 021 LDFLAGS = -Wl,--warn-common -nostdlib -Wl,-Tldscript.lds 024 022 025 # Main target 023 # Main target 026 all: userprogs.kimg 024 all: userprogs.kimg 027 025 028 -include .mkvars 026 -include .mkvars 029 027 030 PROGS := init myprog1 myprog2 myprog3 myprog4 << 031 myprog7 myprog8 myprog9 myprog10 mypr << 032 myprog13 myprog14 banner << 033 << 034 # Build dependencies of the programs << 035 $(PROGS) : % : %.o crt.o libc.a << 036 028 037 PWD := $(shell pwd) 029 PWD := $(shell pwd) 038 030 039 # Programs generation 031 # Programs generation 040 $(PROGS): 032 $(PROGS): 041 $(CC) -static $(LDFLAGS) -o $@ $^ $(LI !! 033 $(CC) -static $(LDFLAGS) -o $@ $^ 042 034 043 # Generation of the libC 035 # Generation of the libC 044 libc.a: libc.o string.o stdarg.o debug.o !! 036 libc.a: libc.o 045 037 046 # Create a program image to be integrated into 038 # Create a program image to be integrated into the Kernel 047 userprogs.kimg: $(PROGS) 039 userprogs.kimg: $(PROGS) 048 @echo "# Generating ELF images for inc 040 @echo "# Generating ELF images for inclusion into the kernel image: $@" 049 @echo "SECTIONS { .userprogs . : { " > !! 041 @echo "SECTIONS { .rodata . : { " > .userprogs.lds 050 @i=0 ; 042 @i=0 ; \ 051 for f in $^ ; do 043 for f in $^ ; do \ 052 i=`expr $$i + 1` ; 044 i=`expr $$i + 1` ; \ 053 echo "extern char _begin_userprog$$ 045 echo "extern char _begin_userprog$$i, _end_userprog$$i;" \ 054 > .userprog$$i.c ; 046 > .userprog$$i.c ; \ 055 echo "char *_userprog"$$i"_entry[]" 047 echo "char *_userprog"$$i"_entry[]" >> .userprog$$i.c ; \ 056 echo " __attribute__((section(\".u 048 echo " __attribute__((section(\".userprogs_table\")))" \ 057 >> .userprog$$i.c ; 049 >> .userprog$$i.c ; \ 058 echo " = { \"$$f\", &_begin_userpr 050 echo " = { \"$$f\", &_begin_userprog$$i, &_end_userprog$$i };" \ 059 >> .userprog$$i.c ; 051 >> .userprog$$i.c ; \ 060 $(CC) $(CFLAGS) -c .userprog$$i.c - 052 $(CC) $(CFLAGS) -c .userprog$$i.c -o .userprog$$i.o ; \ 061 $(OBJCOPY) --add-section .userprog$ !! 053 objcopy --add-section .userprog$$i=$$f .userprog$$i.o \ 062 .userprog$$i.kimg ; 054 .userprog$$i.kimg ; \ 063 echo " . = ALIGN(4096);" >> .userp << 064 echo " _begin_userprog$$i = .;" >> 055 echo " _begin_userprog$$i = .;" >> .userprogs.lds ; \ 065 echo " .userprog$$i.kimg(.userprog 056 echo " .userprog$$i.kimg(.userprog$$i);" >> .userprogs.lds ; \ 066 echo " _end_userprog$$i = .;" >> . 057 echo " _end_userprog$$i = .;" >> .userprogs.lds ; \ 067 echo " .userprog$$i.kimg(.rodata); 058 echo " .userprog$$i.kimg(.rodata); .userprog$$i.kimg(.data);" \ 068 >> .userprogs.lds ; 059 >> .userprogs.lds ; \ 069 done 060 done 070 @echo " _userprogs_table = .; *(.user 061 @echo " _userprogs_table = .; *(.userprogs_table) ; LONG(0);" \ 071 >> .userprogs.lds 062 >> .userprogs.lds 072 @echo "} /DISCARD/ : { *(.text) *(.dat 063 @echo "} /DISCARD/ : { *(.text) *(.data) *(.bss) } }" \ 073 >> .userprogs.lds 064 >> .userprogs.lds 074 @$(LD) -r -o $@ -T.userprogs.lds !! 065 @ld -r -o $@ -T.userprogs.lds 075 066 076 # Create libraries from object files 067 # Create libraries from object files 077 %.a: 068 %.a: 078 $(AR) rcv $@ $^ 069 $(AR) rcv $@ $^ 079 070 080 # Create objects from C source code 071 # Create objects from C source code 081 %.o: %.c 072 %.o: %.c 082 $(CC) -I$(PWD) -c $< $(CFLAGS) -o $@ 073 $(CC) -I$(PWD) -c $< $(CFLAGS) -o $@ 083 074 084 # Create objects from assembler (.S) source co 075 # Create objects from assembler (.S) source code 085 %.o: %.S 076 %.o: %.S 086 $(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_S 077 $(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_SOURCE=1 -o $@ 087 078 088 # Clean directory 079 # Clean directory 089 clean: 080 clean: 090 $(RM) *.o *.a *~ $(PROGS) *.kimg 081 $(RM) *.o *.a *~ $(PROGS) *.kimg 091 $(RM) .userprog* 082 $(RM) .userprog*
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