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authorAlex AUVOLAT <alex.auvolat@ens.fr>2014-03-28 17:16:09 +0100
committerAlex AUVOLAT <alex.auvolat@ens.fr>2014-03-28 17:16:09 +0100
commitacb5161d7384e6b6352c0a9f3cc067621fbf28ad (patch)
tree6b66a66927e98b84d53f97da411b58c1b7ad3c53 /sos-code-article6.75/userland/Makefile
parenta8968330aff45e0b8cf278f49fa337d5fcb9bfd8 (diff)
downloadSOS-master.tar.gz
SOS-master.zip
Import and compile article 6.75HEADmaster
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+## Copyright (C) 2005 David Decotigny
+##
+## This program is free software; you can redistribute it and/or
+## modify it under the terms of the GNU General Public License
+## as published by the Free Software Foundation; either version 2
+## of the License, or (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+## USA.
+
+CC=gcc
+AR=ar
+CFLAGS = -Wall -nostdinc -ffreestanding -I. -I..
+LDFLAGS = -Wl,--warn-common -nostdlib -Wl,-Tldscript.lds
+
+# Main target
+all: userprogs.kimg
+
+-include .mkvars
+
+
+PWD := $(shell pwd)
+
+# Programs generation
+$(PROGS):
+ $(CC) -static $(LDFLAGS) -o $@ $^
+
+# Generation of the libC
+libc.a: libc.o
+
+# Create a program image to be integrated into the Kernel
+userprogs.kimg: $(PROGS)
+ @echo "# Generating ELF images for inclusion into the kernel image: $@"
+ @echo "SECTIONS { .rodata . : { " > .userprogs.lds
+ @i=0 ; \
+ for f in $^ ; do \
+ i=`expr $$i + 1` ; \
+ echo "extern char _begin_userprog$$i, _end_userprog$$i;" \
+ > .userprog$$i.c ; \
+ echo "char *_userprog"$$i"_entry[]" >> .userprog$$i.c ; \
+ echo " __attribute__((section(\".userprogs_table\")))" \
+ >> .userprog$$i.c ; \
+ echo " = { \"$$f\", &_begin_userprog$$i, &_end_userprog$$i };" \
+ >> .userprog$$i.c ; \
+ $(CC) $(CFLAGS) -c .userprog$$i.c -o .userprog$$i.o ; \
+ objcopy --add-section .userprog$$i=$$f .userprog$$i.o \
+ .userprog$$i.kimg ; \
+ echo " _begin_userprog$$i = .;" >> .userprogs.lds ; \
+ echo " .userprog$$i.kimg(.userprog$$i);" >> .userprogs.lds ; \
+ echo " _end_userprog$$i = .;" >> .userprogs.lds ; \
+ echo " .userprog$$i.kimg(.rodata); .userprog$$i.kimg(.data);" \
+ >> .userprogs.lds ; \
+ done
+ @echo " _userprogs_table = .; *(.userprogs_table) ; LONG(0);" \
+ >> .userprogs.lds
+ @echo "} /DISCARD/ : { *(.text) *(.data) *(.bss) } }" \
+ >> .userprogs.lds
+ @ld -r -o $@ -T.userprogs.lds
+
+# Create libraries from object files
+%.a:
+ $(AR) rcv $@ $^
+
+# Create objects from C source code
+%.o: %.c
+ $(CC) -I$(PWD) -c $< $(CFLAGS) -o $@
+
+# Create objects from assembler (.S) source code
+%.o: %.S
+ $(CC) -I$(PWD) -c $< $(CFLAGS) -DASM_SOURCE=1 -o $@
+
+# Clean directory
+clean:
+ $(RM) *.o *.a *~ $(PROGS) *.kimg
+ $(RM) .userprog*