add make install and tolling similar to x48ng's

Makefile

@@ -1,3 +1,6 @@
+PREFIX = /usr
+DOCDIR = $(PREFIX)/doc/hpemu
+
 CC = gcc
 LIBS = $(shell pkg-config --libs sdl2 SDL2_ttf)
 CFLAGS = -Wall -Werror -O3 -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=unused-but-set-variable -Wno-error=missing-braces -Wno-error=incompatible-pointer-types
@@ -22,11 +25,6 @@ dist/hpemu: src/bus.o \
 	src/timers.o
 	$(CC) $(CFLAGS) $(LIBS) -o $@ $+
 
-# Installing
-
-get-roms:
-	make -C ROMs get-roms
-
 # Cleaning
 clean:
 	-rm src/*.o
@@ -39,3 +37,23 @@ clean-all: mrproper
 # Formatting
 pretty-code:
 	clang-format -i src/*.c src/*.h
+
+# Installing
+get-roms:
+	make -C dist/ROMs get-roms
+
+install: all get-roms
+	install -m 755 -d -- $(DESTDIR)$(PREFIX)/bin
+	install -c -m 755 dist/hpemu $(DESTDIR)$(PREFIX)/bin/hpemu
+
+	install -m 755 -d -- $(DESTDIR)$(PREFIX)/share/hpemu
+	install -c -m 644 dist/hplogo.png $(DESTDIR)$(PREFIX)/share/hpemu/hplogo.png
+	cp -R dist/ROMs/ $(DESTDIR)$(PREFIX)/share/hpemu/
+	sed "s|@PREFIX@|$(PREFIX)|g" dist/setup-hpemu-home.sh > $(DESTDIR)$(PREFIX)/share/hpemu/setup-hpemu-home.sh
+	chmod 755 $(DESTDIR)$(PREFIX)/share/hpemu/setup-hpemu-home.sh
+
+	install -m 755 -d -- $(DESTDIR)$(DOCDIR)
+	cp -R ./*.txt $(DESTDIR)$(DOCDIR)
+
+	install -m 755 -d -- $(DESTDIR)$(PREFIX)/share/applications
+	sed "s|@PREFIX@|$(PREFIX)|g" dist/hpemu.desktop > $(DESTDIR)$(PREFIX)/share/applications/hpemu.desktop

dist/hpemu.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Encoding=UTF-8
+Version=1.0
+Type=Application
+Terminal=false
+Exec=@PREFIX@/bin/hpemu
+Name=hpemu
+Icon=@PREFIX@/share/hpemu/hplogo.png
+Categories=Utility;

dist/setup-hpemu-home.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+DOTHPEMU=${DOTHPEMU:-.config/hpemu}
+
+ROM=${ROM:-gxrom-r}
+
+mkdir -p ~/"${DOTHPEMU}"
+
+[ -e ~/"${DOTHPEMU}"/rom ] && rm ~/"${DOTHPEMU}"/rom
+ln -s @PREFIX@/share/hpemu/ROMs/"$ROM" ~/"${DOTHPEMU}"/rom
+cd ~/"${DOTHPEMU}"

src/files.c

@@ -367,8 +367,8 @@ void rom_init( char* filename )
         printf( "ERROR: can't read ROM file\n" );
         exit( 0x14 );
     }
-    // pack_fclose(f);
     fclose( f );
+
     if ( buf[ 0 ] & 0xF0 || buf[ 1 ] & 0xF0 ) {
         if ( size == 1024 * 1024 ) {
             printf( "ERROR: wrong ROM\n" );

src/rpl.c

@@ -14,10 +14,8 @@
 int rpl_object_size( byte* obj )
 {
     int size;
-    int prologue;
     int n;
-
-    prologue = nib_to_unsigned( obj, 5 );
+    int prologue = nib_to_unsigned( obj, 5 );
 
     switch ( prologue ) {
 
@@ -85,9 +83,9 @@ int rpl_object_size( byte* obj )
 
         case 0x02A96: // Directory
             n = nib_to_unsigned( obj + 8, 5 );
-            if ( n == 0 ) {
+            if ( n == 0 )
                 size = 13;
-            } else {
+            else {
                 size = 8 + n;
                 size += 4 + 2 * nib_to_unsigned( obj + size, 2 );
                 size += rpl_object_size( obj + size );
@@ -103,9 +101,8 @@ int rpl_object_size( byte* obj )
 static address read_address( address adr )
 {
     byte buf[ 5 ];
-    word ocrc;
+    word ocrc = crc;
 
-    ocrc = crc;
     bus_read( buf, adr, 5 );
     crc = ocrc;
 
@@ -123,12 +120,11 @@ static void write_address( address adr, address val )
 static int moveup( address src, address dst, address cnt )
 {
     byte* buf = malloc( cnt * sizeof( byte ) );
-    word ocrc;
 
     if ( !buf )
         return -1;
 
-    ocrc = crc;
+    word ocrc = crc;
     bus_read( buf, src, cnt );
     bus_write( buf, dst, cnt );
     crc = ocrc;
@@ -139,14 +135,12 @@ static int moveup( address src, address dst, address cnt )
 
 address rpl_make_temp( address size )
 {
-    address temptop, rsktop, dsktop;
+    address temptop = read_address( TEMPTOP );
+    address rsktop = read_address( RSKTOP );
+    address dsktop = read_address( DSKTOP );
 
     size += 6;
 
-    temptop = read_address( TEMPTOP );
-    rsktop = read_address( RSKTOP );
-    dsktop = read_address( DSKTOP );
-
     if ( rsktop + size > dsktop )
         return 0;
 
@@ -163,24 +157,23 @@ address rpl_make_temp( address size )
 
 void rpl_push( address adr )
 {
-    address dsktop, avmem;
+    address avmem = read_address( AVMEM );
 
-    avmem = read_address( AVMEM );
     if ( !avmem )
         return;
     write_address( AVMEM, avmem - 1 );
 
-    dsktop = read_address( DSKTOP );
+    address dsktop = read_address( DSKTOP );
     dsktop -= 5;
+
     write_address( dsktop, adr );
     write_address( DSKTOP, dsktop );
 }
 
 int rpl_push_object( byte* obj, address size )
 {
-    address adr;
+    address adr = rpl_make_temp( size );
 
-    adr = rpl_make_temp( size );
     if ( !adr )
         return -1;