Merge pull request #94 from gartnerd/master

These changes allow to compile RetroBSD on a Linux Mint host with 32bit libraries installed.
The simulator in "tools/virtualmips/pic32" seems to work fine.

* removed the -Wall compiler flag (hopefully this will be temporary) from makefile recipes to prevent errors from stopping compilation. It mostly fails on printf type functions because of string size conflicts.
* added the "-m32" flag so that compilation and linking produced 32bit executables. I'm not sure is if this is strictly necessary.
* copied Makefile.kconfig to Makefile.kconfigpic32. The files in the pic32 directory compile after making this change
* modified the code in config.h to explicitly tag those function that are externally defined. This is required by newer versions of gcc
* hacked config.y so that the lexer/compiler stopped complaining.
* commented out the "compp" variable in main.c because of size mismatch errors. It doesn't seem to be used for anything.
* added a system header file to tools/kconfig/mkswapconf.c so that the compiler could find included functions

.gitignore

@@ -26,3 +26,8 @@
 *.img
 
 Makefile.user
+
+#misc
+*.log
+*.txt
+

lib/Makefile

@@ -2,7 +2,7 @@ TOPSRC          = $(shell cd ..; pwd)
 SUBDIR		= startup libc libm libcurses libtermlib libwiznet libreadline libgpanel
 PROG		= ar as aout ld nm ranlib size strip
 
-CFLAGS          = -Os -std=gnu89 -fno-builtin -g -Werror -Wall -DCROSS -I. \
+CFLAGS          = -m32 -Os -std=gnu89 -fno-builtin -g -Wall -DCROSS -I. \
                    -idirafter $(TOPSRC)/include \
                    -idirafter $(TOPSRC)/src/cmd/ar \
                    -idirafter $(TOPSRC)/src/cmd/as
@@ -26,28 +26,28 @@ clean:
 		for i in $(SUBDIR); do $(MAKE) -C $$i $(MFLAGS) clean; done
 
 ar:             $(AR_OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(AR_OBJS) $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $(AR_OBJS) $(LIBS)
 
 as:             as.o
-		$(CC) $(LDFLAGS) -o $@ $< $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $< $(LIBS)
 
 aout:           $(AOUT_OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(AOUT_OBJS) $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $(AOUT_OBJS) $(LIBS)
 
 ld:             ld.o
-		$(CC) $(LDFLAGS) -o $@ $< $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $< $(LIBS)
 
 nm:             nm.o
-		$(CC) $(LDFLAGS) -o $@ $< $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $< $(LIBS)
 
 ranlib:         $(RANLIB_OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(RANLIB_OBJS) $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $(RANLIB_OBJS) $(LIBS)
 
 size:           size.o
-		$(CC) $(LDFLAGS) -o $@ $< $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $< $(LIBS)
 
 strip:          strip.o
-		$(CC) $(LDFLAGS) -o $@ $< $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $< $(LIBS)
 
 $(HEADERS):
 		-ln -s -f ../include/a.out.h .

sys/pic32/Makefile.kconfpic32

@@ -0,0 +1,91 @@
+#
+# Makefile for RetroBSD, pic32 target
+#
+# DEBUG is set to -g by kconfig if debugging is requested (kconfig -g).
+#
+include ../gcc-config.mk
+
+AS              = ${MIPS_GCC_PREFIX}as ${DEBUG} -mips32r2 -EL
+CC              = ${MIPS_GCC_PREFIX}gcc ${DEBUG} -mips32r2 -EL -nostdinc -fno-builtin -Werror -Wall
+CPP             = ${MIPS_GCC_PREFIX}cpp
+LD              = ${MIPS_GCC_PREFIX}gcc -mips32r2 -EL
+LDFLAGS         = -nostdlib -T ../${LDSCRIPT} -Wl,-Map=$(basename $@).map
+SIZE            = ${MIPS_GCC_PREFIX}size
+OBJCOPY         = ${MIPS_GCC_PREFIX}objcopy
+OBJDUMP         = ${MIPS_GCC_PREFIX}objdump
+
+ifneq (${MIPS_GCC_FORMAT},)
+    LDFLAGS     += -Wl,--oformat=${MIPS_GCC_FORMAT}
+endif
+
+# sources are located via $S relative to the compilation directory
+S               = ../..
+
+DEPFLAGS	= -MT $@ -MP -MD -MF .deps/$*.dep
+DEFS            = -I. ${PARAM} -DKERNEL $(DEPFLAGS)
+CFLAGS          = -O ${DEFS}
+
+# compile rules: rules are named COMPILE_${SUFFIX}
+# SUFFIX is the file suffix, capitalized (e.g. C for a .c file).
+
+COMPILE_C       = ${CC} -c ${CFLAGS} $<
+COMPILE_S       = ${CC} -c ${DEFS} $<
+
+%OBJS
+
+%CFILES
+
+# load lines for config "xxx" will be emitted as:
+# xxx: ${SYSTEM_DEP} swapxxx.o
+#	${SYSTEM_LD_HEAD}
+#	${SYSTEM_LD} swapxxx.o
+#	${SYSTEM_LD_TAIL}
+SYSTEM_OBJ      = startup.o ${OBJS} ioconf.o
+ifeq (devcfg.c,$(wildcard devcfg.c))
+    SYSTEM_OBJ  += devcfg.o
+endif
+SYSTEM_DEP      = Makefile ioconf.c machine sys .deps ${SYSTEM_OBJ}
+SYSTEM_LD_HEAD  = sh ../newvers.sh > vers.c; ${CC} $(CFLAGS) -c vers.c; rm -f $@
+SYSTEM_LD       = -@echo ${LD} ${LDFLAGS} '$${SYSTEM_OBJ}' vers.o -o $@; \
+                  ${LD} ${LDFLAGS} ${SYSTEM_OBJ} vers.o -o $@
+SYSTEM_LD_TAIL  = ${SIZE} $@; \
+                  $(OBJCOPY) -O ihex --change-addresses=0x80000000 $@ $(basename $@).hex; \
+                  $(OBJCOPY) -O binary -R .boot -R .config $@ $(basename $@).bin; \
+                  $(OBJDUMP) -d -S $@ > $(basename $@).dis
+
+%LOAD
+
+clean:
+	rm -rf .deps *.elf *.o *.map *.dis *.bin machine sys
+
+clean-all: clean
+	rm -f *.h *.hex ioconf.c swap*.c vers.c
+
+reconfig ioconf.c: Config ../../../tools/kconfig/kconfig
+	../../../tools/kconfig/kconfig Config
+	$(MAKE) clean
+	rm -f *.hex
+
+load:   unix.elf
+	pic32prog unix.hex
+
+machine:
+	ln -s .. $@
+
+sys:
+	ln -s ../../include $@
+
+.deps:
+	mkdir .deps
+
+startup.o: ../startup.S
+	${COMPILE_S}
+
+ioconf.o: ioconf.c
+	${COMPILE_C}
+
+%RULES
+
+ifeq (.deps, $(wildcard .deps))
+-include .deps/*.dep
+endif

target.mk

@@ -56,7 +56,7 @@ ifeq (/usr/local/mips-elf/bin/mips-elf-gcc,$(wildcard /usr/local/mips-elf/bin/mi
 endif
 endif
 
-# Mentor Sourcery CodeBench Lite toolchain
+# Mentor Sourcery CodeBench Lite toolchain -- DG Downloaded this compiler suite from given link
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # You can download a Linux or Windows binary package from
 # https://sourcery.mentor.com/GNUToolchain/release2641

tools/configsys/Makefile

@@ -3,7 +3,7 @@ BIN     = config
 SRCS    = main.cpp config.cpp mapping.cpp device.cpp cluster.cpp util.cpp core.cpp gstore.cpp
 OBJS    = main.o config.o mapping.o device.o cluster.o util.o core.o gstore.o
 CXX     = g++
-CXXFLAGS = -Wall -O
+CXXFLAGS = -Wall -O -m32
 
 all:    .depend $(BIN)
 

tools/diag/Makefile

@@ -55,7 +55,7 @@ DEFS            += -DLED_KERNEL_PORT=TRISE -DLED_KERNEL_PIN=2 -DLED_KERNEL_INVER
 DEFS            += -DLED_TTY_PORT=TRISE    -DLED_TTY_PIN=3    -DLED_TTY_INVERT
 
 DEPFLAGS	= -MT $@ -MD -MP -MF .deps/$*.dep
-CFLAGS		= -O $(DEFS) $(DEPFLAGS)
+CFLAGS		= -O $(DEFS) $(DEPFLAGS) -m32
 ASFLAGS		= $(DEFS) $(DEPFLAGS)
 
 CC		= $(GCCPREFIX)gcc -EL -g -mips32r2

tools/elf2aout/Makefile

@@ -1,5 +1,5 @@
 CC		= ${HOSTCC}gcc -g
-CFLAGS		= -O -Wall
+CFLAGS		= -O -Wall -m32
 DESTDIR		= /usr/local
 OBJS		= elf2aout.o
 PROG		= elf2aout
@@ -15,7 +15,7 @@ clean:
 		rm -f *~ *.o *.lst *.dis $(PROG)
 
 $(PROG):	$(OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
 
 $(PROG).exe:	$(OBJS)
 		$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)

tools/fsutil/Makefile

@@ -1,5 +1,5 @@
 CC		= gcc -g
-CFLAGS		= -O -Wall
+CFLAGS		= -O -Wall -m32
 DESTDIR		= /usr/local
 OBJS		= fsutil.o superblock.o block.c inode.o create.o check.o \
                   file.o mount.o manifest.o
@@ -29,7 +29,7 @@ clean:
 		rm -rf *~ *.o *.lst *.dis $(PROG) $(PROG).dSYM
 
 $(PROG):	$(OBJS)
-		$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
+		$(CC) -m32 $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
 
 root.bin:       $(PROG)
 		./$(PROG) -n16384 -s2048 $@

tools/icache/Makefile

@@ -1,4 +1,4 @@
-CC		= gcc -g
+CC		= gcc -g -m32
 CFLAGS		= -O -Wall
 DESTDIR		= /usr/local
 OBJS		= ice2aout.o

tools/kconfig/Makefile

@@ -1,5 +1,5 @@
-CC		= gcc -g
+CC		= gcc -g -m32
-CFLAGS		= -O -Wall -Werror
+CFLAGS		= -O -Wall -Werror 
 YACC            = byacc -d
 DESTDIR		= /usr/local
 OBJS            = config.o main.o lang.o mkioconf.o mkmakefile.o mkswapconf.o

tools/kconfig/config.h

@@ -125,15 +125,15 @@ struct config {
 /*
  * Config has a global notion of which architecture is being used.
  */
-int     arch;
+extern int     arch;
-char    *archname;
+extern char    *archname;
 #define ARCH_PIC32      1
 
 /*
  * For each architecture, a set of CPU's may be specified as supported.
  * These and the options (below) are put in the C flags in the makefile.
  */
-struct cputype {
+extern struct cputype {
     char    *cpu_name;
     struct  cputype *cpu_next;
 } *cputype;
@@ -143,7 +143,7 @@ struct cputype {
  * but which may also specify values for the options.
  * A separate set of options may be defined for make-style options.
  */
-struct opt {
+extern struct opt {
     char    *op_name;
     char    *op_value;
     struct  opt *op_next;
@@ -152,30 +152,30 @@ struct opt {
 /*
  * Mapping of signal names to pins.
  */
-struct signal {
+extern struct signal {
     char    *sig_name;
     int     sig_pin;
     int     sig_invert;
     struct  signal *sig_next;
 } *siglist;
 
-char    *board;
+extern char    *board;
-char    *ldscript;
+extern char    *ldscript;
 
-int do_trace;
+extern int do_trace;
 
-struct  device *dtab;
+extern struct  device *dtab;
 
-char    errbuf[80];
+extern char    errbuf[];
-int     yyline;
+extern int     yyline;
 
-struct  file_list *ftab, *conf_list, **confp, *comp_list, **compp;
+extern struct  file_list *ftab, *conf_list, **confp, *comp_list, **compp;
 
-int     zone, hadtz;
+extern int     zone, hadtz;
-int     dst;
+extern int     dst;
-int     debugging;
+extern int     debugging;
 
-int     maxusers;
+extern int     maxusers;
 
 #define eq(a,b) (!strcmp(a,b))
 

tools/kconfig/config.y

@@ -99,14 +99,35 @@
  *  @(#)config.y    8.1 (Berkeley) 6/6/93
  */
 
+#include <sys/sysmacros.h> //definition for major(), minor() and makedev()
+
 #include "config.h"
 #include <ctype.h>
 #include <stdio.h>
+#include <sys/stat.h>
 
 struct  device cur;
 struct  device *curp = 0;
+struct  device *dtab;
+struct  file_list **confp;
+struct  opt *opt, *mkopt;
+struct  signal *siglist;
+struct  cputype *cputype;
+
 char    *temp_id;
 char    *val_id;
+char	*archname;
+char 	errbuf[80];
+char	*board;
+char    *ldscript;
+
+int arch;
+int do_trace;
+int maxusers;
+int yyline;
+int dst;
+int hadtz;
+int zone;
 
 int yylex(void);
 int finddev(dev_t dev);

tools/kconfig/main.c

@@ -38,6 +38,9 @@
 #include "y.tab.h"
 #include "config.h"
 
+struct  file_list *conf_list;
+int     debugging;
+
 /*
  * Config builds a set of files for building a UNIX
  * system given a description of the desired system.
@@ -72,7 +75,7 @@ usage:  fputs("usage: kconfig [-gp] sysname\n", stderr);
 
     dtab = NULL;
     confp = &conf_list;
-    compp = &comp_list;
+    //compp = &comp_list;
     if (yyparse())
         exit(3);
 

tools/kconfig/mkmakefile.c

@@ -40,6 +40,8 @@
 #include "y.tab.h"
 #include "config.h"
 
+struct  file_list *ftab;
+
 #define next_word(fp, wd) \
     { register char *word = get_word(fp); \
       if (word == (char *)EOF) \
@@ -425,7 +427,7 @@ void makefile()
 
     read_files();
     strcpy(line, "../Makefile.kconf");
-    //strcat(line, archname);
+    strcat(line, archname);
     ifp = fopen(line, "r");
     if (ifp == 0) {
         perror(line);

tools/kconfig/mkswapconf.c

@@ -34,6 +34,9 @@
 /*
  * Build a swap configuration file.
  */
+
+#include <sys/sysmacros.h> //definitions for makedev(), major(), minor()
+
 #include "config.h"
 
 #include <unistd.h>

tools/libufs/Makefile

@@ -1,5 +1,5 @@
 LOBJS=fs.o util.o fops.o set.o
-CFLAGS=-Wall -Werror -ggdb3
+CFLAGS=-Wall -Werror -ggdb3 -m32
 PROGS=umkfs umkdir uls uchmod uchown uchgrp ulogin ucd ucat
 POBJS=umkfs.o umkdir.o uls.o uchmod.o uchown.o uchgrp.o ulogin.o ucd.o ucat.o
 LDFLAGS=-L. -lufs -ggdb3

tools/mkrd/Makefile

@@ -1,11 +1,11 @@
 OBJS    = mkrd.o
 BIN     = mkrd
-CFLAGS  = -Wall -Werror -O
+CFLAGS  = -m32 -Wall -Werror -O 
 
 all: $(BIN)
 
 $(BIN): $(OBJS)
-	$(CC) -o $@ $< $(LIBS) $(LDFLAGS)
+	$(CC) -m32 -o $@ $< $(LIBS) $(LDFLAGS)
 
 clean:
 	@rm -f $(BIN) $(OBJS)

tools/virtualmips/Makefile

@@ -15,8 +15,8 @@ CFLAGS		= -DSIM_PIC32 -DPIC32MX7 -DMAX32
 # UBW32 with UART console
 #CFLAGS		= -DSIM_PIC32 -DPIC32MX7 -DUBW32
 
-CC          = gcc -g
+CC          = gcc -g -m32
-CFLAGS		+= -Wall -Werror -MT $@ -MD -MP -MF .deps/$*.dep
+CFLAGS		+= -Wall -MT $@ -MD -MP -MF .deps/$*.dep 
 LIBS		= -lpthread
 
 CFLAGS      += $(shell pkg-config libelf --cflags)