Split libsyscall's functions into independent files

This allows ld to only link the function used and will prepare the
migration to a more recent, c99-compliant, newlib version.

Author: dciabrin

.travis.yml

@@ -29,6 +29,8 @@ jobs:
             - ngdevkit-gngeo
             - python3-pygame
             - imagemagick
+            - sox
+            - libsox-fmt-mp3
             - libglew-dev
             - libsdl2-dev
       env:
@@ -47,6 +49,7 @@ jobs:
             # ngdevkit-examples deps
             - ngdevkit-gngeo
             - imagemagick
+            - sox
             - glew
             - sdl2
             - sdl2_image

runtime/Makefile.in

@@ -15,13 +15,32 @@
 # along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
 
 OBJS=libsyscalls.a ngdevkit-crt0.o
+SYSCALL_OBJS=\
+  close \
+  _exit \
+  exit \
+  fstat \
+  getpid \
+  gettimeofday \
+  isatty \
+  kill \
+  link \
+  lseek \
+  open \
+  raise \
+  read \
+  sbrk \
+  times \
+  unlink \
+  write
+
 
 all: $(OBJS) ngdevkit-specs
 
 -include ../Makefile.config
 
-libsyscalls.a: syscalls.o
-	$(NGAR) cru $@ $^ && $(NGRANLIB) $@ 
+libsyscalls.a: $(SYSCALL_OBJS:%=syscall/%.o)
+	$(NGAR) cru $@ $^ && $(NGRANLIB) $@
 
 ngdevkit-specs:
 	$(NGGCC) -dumpspecs | sed -e 's/\(-lc\)/\1 -lsyscalls/' | \
@@ -49,6 +68,6 @@ install-specs: install-dirs ngdevkit-specs
 	$(INSTALL) $(filter-out install-dirs,$^) $$DIR
 
 clean:
-	rm -f *.o *~ *.a ngdevkit-specs
+	rm -f *.o syscall/*.o *~ *.a ngdevkit-specs
 
 .PHONY: install clean

runtime/syscall/_exit.c

@@ -0,0 +1,21 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+void _exit(int x) {
+}

runtime/syscall/close.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int close (int file) {
+  errno = EBADF;
+  return -1;
+}

runtime/syscall/exit.c

@@ -0,0 +1,23 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+void exit (int n) { 
+  for(;;);
+}

runtime/syscall/fstat.c

@@ -0,0 +1,29 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+
+
+int fstat (int file, struct stat * st) {
+  errno = EBADF;
+  return -1;
+}

runtime/syscall/getpid.c

@@ -0,0 +1,23 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+int getpid (int n) {
+  return 1;
+}

runtime/syscall/gettimeofday.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int gettimeofday (void * tp, void * tzp) {
+  errno = EINVAL;
+  return -1;
+}

runtime/syscall/isatty.c

@@ -0,0 +1,22 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+int isatty (int fd) {
+    return 0;
+}

runtime/syscall/kill.c

@@ -0,0 +1,28 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <errno.h>
+
+
+int kill (int n, int m) {
+  errno = EINVAL;
+  return -1;
+}

runtime/syscall/link.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int link (void) {
+  errno = ENOENT;
+  return -1;
+}

runtime/syscall/lseek.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int lseek (int file, int ptr, int dir) {
+  errno = EBADF;
+  return -1;
+}

runtime/syscall/open.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int open (const char * path, int flags, ... ) {
+  errno = EMFILE;
+  return -1;
+}

runtime/syscall/raise.c

@@ -0,0 +1,3 @@
+void raise (void) {
+  return;
+}

runtime/syscall/read.c

@@ -0,0 +1,26 @@
+/*
+ * Syscall implementation as expected by newlib
+ * Copyright (c) 2015-2020 Damien Ciabrini
+ * This file is part of ngdevkit
+ *
+ * ngdevkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ngdevkit 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ngdevkit.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+
+
+int read (int file, char * ptr, int len) {
+  errno = EBADF;
+  return -1;
+}