core: Prepare for the Hurd.

* lib/linux/libc.c: Move from lib/linux.c.
* lib/linux/gcc.c: Move from lib/linux-gcc.c.
* lib/linux/gnu.c: Move from lib/linux+gnu.c.
* lib/linux/libc.c: Move from lib/linux.c.
* lib/linux/mes.c: Move from lib/linux-mes.c.
* lib/linux/mini-gcc.c: Move from lib/linux-mini-gcc.c.
* lib/linux/mini-mes.c: Move from lib/linux-mini-mes.c.
* lib/linux/tcc.c: Move from lib/linux+tcc.c.
* lib/linux/crt0.c: Move from lib/crt0.c.
* lib/linux/crt1.c: Move from lib/crt1.c.
* lib/linux/crti.c: Move from lib/crti.c.
* lib/linux/crtn.c: Move from lib/crtn.c.
* build-aux/build-cc.sh: Update for new layout.
* build-aux/build-cc32.sh: Likewise.
* build-aux/build-mes.sh: Likewise.
* build-aux/cc-mes.sh: Likewise.
* build-aux/cc32-mes.sh: Likewise.
* lib/string/argz-count.c: New file taken from GNU C Library,
  relicensed.
* lib/string/argz-extract.c: New file taken from GNU C Library,
  relicensed.
* include/argz.h: New file.
* lib/string/memcpy.c: New file, extract from libc.
* lib/assert/assert.c: Likewise.

AUTHORS

@@ -3,7 +3,7 @@ Main author
 All files except the imported files listed below
 
 Jeremiah Orians <jeremiah@pdp10.guru>
-lib/libc.c (fopen)
+lib/libc+tcc.c (fopen)
 scaffold/tests/98-fopen.c
 
 Han-Wen Nienhuys <hanwen@xs4all.nl>

build-aux/build-cc32.sh

@@ -71,10 +71,10 @@ CC32_CFLAGS=${CC32_CFLAGS-"
 -Wno-incompatible-pointer-types
 "}
 
-ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/crt0
+ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/linux/crt0
-ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/crt1
+ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/linux/crt1
-ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/crti
+ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/linux/crti
-ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/crtn
+ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/linux/crtn
 ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/libc-mini
 ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/libc
 ARCHDIR=1 NOLINK=1 sh build-aux/cc32-mes.sh lib/libgetopt

build-aux/build-mes.sh

@@ -105,10 +105,10 @@ if [ ! -d "$MES_SEED" ] \
 fi
 
 MES_ARENA=100000000
-ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/crt0
+ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/linux/crt0
-ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/crt1
+ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/linux/crt1
-ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/crti
+ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/linux/crti
-ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/crtn
+ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/linux/crtn
 ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/libc-mini
 ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/libc
 ARCHDIR=1 NOLINK=1 bash build-aux/cc-mes.sh lib/libgetopt

build-aux/cc-mes.sh

@@ -57,7 +57,7 @@ if [ -z "$ARCHDIR" ]; then
     p="mes-"
 else
     b=${c##*/}
-    d=${c%/*}
+    d=${c%%/*}
     o="$d/x86-mes/$b"
     mkdir -p $d/x86-mes
 fi

build-aux/cc32-mes.sh

@@ -63,7 +63,7 @@ if [ -z "$ARCHDIR" ]; then
     p="$a-"
 else
     b=${c##*/}
-    d=${c%/*}
+    d=${c%%/*}
     o="$d/$arch/$b"
     mkdir -p $d/$arch
 fi

include/argz.h

@@ -0,0 +1,42 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * Mes --- Maxwell Equations of Software
+ * Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of Mes.
+ *
+ * Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __MES_ARGZ_H
+#define __MES_ARGZ_H 1
+
+#if WITH_GLIBC
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#undef __MES_ARGZ_H
+#include_next <argz.h>
+
+#else // ! WITH_GLIBC
+
+#ifndef libc_hidden_def
+#define libc_hidden_def(x)
+#define weak_alias(x,y)
+#endif
+
+size_t __argz_count (char const *argz, size_t len);
+void __argz_extract (char const *argz, size_t len, char **argv);
+
+#endif // ! WITH_GLIBC
+
+#endif // __MES_ARGZ_H

include/errno.h

@@ -27,6 +27,9 @@
 #undef __MES_ERRNO_H
 #include_next <errno.h>
 #else // ! WITH_GLIBC
+
+typedef int error_t;
+
 int errno;
 #define ENOENT   2
 #define EINTR    4

lib/assert/assert.c

@@ -0,0 +1,10 @@
+void
+assert_fail (char* s)
+{
+  eputs ("assert fail: ");
+  eputs (s);
+  eputs ("\n");
+  char *fail = s;
+  fail = 0;
+  *fail = 0;
+}

lib/binutils.c

@@ -244,7 +244,7 @@ sbrk (intptr_t delta)
 {
   if (delta >= 0)
     return malloc (delta);
-  return g_brk;
+  return __brk;
 }
 
 // binutils 2.30

lib/libc+gnu.c

@@ -19,9 +19,19 @@
  */
 
 #include <libc+tcc.c>
-#include <linux+gnu.c>
+
+#if __GNU__
+#include <linux/gnu.c>
+#elif __linux__
+#include <linux/gnu.c>
+#else
+#error both __GNU__ and _linux__ are undefined, choose one
+#endif
+
 #include <m4.c>
 #include <binutils.c>
 #include <gcc.c>
-#include <alloca.c>
+#if !__GNU__
+#include <stdlib/alloca.c>
+#endif
 #include <glibc.c>

lib/libc+tcc.c

@@ -36,7 +36,14 @@
 #include <unistd.h>
 
 #include <libc.c>
-#include <linux+tcc.c>
+
+#if __GNU__
+#include <hurd/tcc.c>
+#elif __linux__
+#include <linux/tcc.c>
+#else
+#error both __GNU__ and _linux__ are undefined, choose one
+#endif
 
 #if __MESC__
 

lib/libc-mini.c

@@ -20,17 +20,29 @@
 
 #include <errno.h>
 
+#ifndef _SIZE_T
+#define _SIZE_T
+#ifndef __SIZE_T
+#define __SIZE_T
 #ifndef __MES_SIZE_T
 #define __MES_SIZE_T
 #undef size_t
 typedef unsigned long size_t;
 #endif
+#endif
+#endif
 
+#ifndef _SSIZE_T
+#define _SSIZE_T
+#ifndef __SSIZE_T
+#define __SSIZE_T
 #ifndef __MES_SSIZE_T
 #define __MES_SSIZE_T
 #undef ssize_t
 typedef long ssize_t;
 #endif
+#endif
+#endif
 
 ssize_t write (int filedes, void const *buffer, size_t size);
 
@@ -65,15 +77,13 @@ puts (char const* s)
   return oputs ("\n");
 }
 
-#if __MESC__
+#if __GNU__
-
+#include <hurd/libc-mini.c>
-#include <linux-mini-mes.c>
+#elif __linux__
-
+#include <linux/libc-mini.c>
-#else // !__MESC__
+#else
-
+#error both __GNU__ and _linux__ are undefined, choose one
-#include <linux-mini-gcc.c>
+#endif
-
-#endif // !__MESC__
 
 void (*__call_at_exit) (void);
 
@@ -84,17 +94,3 @@ exit (int code)
     (*__call_at_exit) ();
   _exit (code);
 }
-
-ssize_t
-write (int filedes, void const *buffer, size_t size)
-{
-  int r = _write (filedes, buffer, size);
-  if (r < 0)
-    {
-      errno = -r;
-      r = -1;
-    }
-  else
-    errno = 0;
-  return r;
-}

lib/libc.c

@@ -29,21 +29,16 @@
 #include <stdlib.h>
 #include <unistd.h>
 
-#if __MESC__
-
-#include <linux-mes.c>
-
-#else // !__MESC__
-
-#include <assert.h>
-
-#include <linux-gcc.c>
-
-#endif // !__MESC__
-
 #include <libc-mini.c>
 #include <libmes.c>
-#include <linux.c>
+
+#if __GNU__
+#include <hurd/libc.c>
+#elif __linux__
+#include <linux/libc.c>
+#else
+#error both __GNU__ and _linux__ are undefined, choose one
+#endif
 
 int g_stdin = 0;
 
@@ -63,6 +58,13 @@ __mes_debug ()
   return __mes_debug;
 }
 
+
+#if !___GNU__
+#include <string/memcpy.c>
+#include <stdlib/malloc.c>
+#include <assert/assert.c>
+#endif
+
 int
 getchar ()
 {
@@ -94,17 +96,6 @@ putc (int c, FILE* stream)
   return fdputc (c, (int)stream);
 }
 
-void
-assert_fail (char* s)
-{
-  eputs ("assert fail: ");
-  eputs (s);
-  eputs ("\n");
-  char *fail = s;
-  fail = 0;
-  *fail = 0;
-}
-
 int
 getc (FILE *stream)
 {
@@ -147,29 +138,6 @@ strcpy (char *dest, char const *src)
   return dest;
 }
 
-char *g_brk = 0;
-
-void *
-malloc (size_t size)
-{
-  if (!g_brk)
-    g_brk = brk (0);
-  if (brk (g_brk + size) == (void*)-1)
-    return 0;
-  char *p = g_brk;
-  g_brk += size;
-  return p;
-}
-
-void *
-memcpy (void *dest, void const *src, size_t n)
-{
-  char* p = dest;
-  char const* q = src;
-  while (n--) *p++ = *q++;
-  return dest;
-}
-
 void *
 realloc (void *ptr, size_t size)
 {

lib/libg.c

@@ -37,7 +37,15 @@
 #define sscanf _sscanf
 
 #include <libc+tcc.c>
-#include <linux+gnu.c>
+
+#if __GNU__
+#include <linux/gnu.c>
+#elif __linux__
+#include <linux/gnu.c>
+#else
+#error both __GNU__ and _linux__ are undefined, choose one
+#endif
+
 #include <m4.c>
 #include <binutils.c>
 #include <gcc.c>

lib/linux/libc-mini.c

@@ -0,0 +1,43 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * Mes --- Maxwell Equations of Software
+ * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of Mes.
+ *
+ * Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if __MESC__
+
+#include <linux/mini-mes.c>
+
+#else // !__MESC__
+
+#include <linux/mini-gcc.c>
+
+#endif // !__MESC__
+
+ssize_t
+write (int filedes, void const *buffer, size_t size)
+{
+  int r = _write (filedes, buffer, size);
+  if (r < 0)
+    {
+      errno = -r;
+      r = -1;
+    }
+  else
+    errno = 0;
+  return r;
+}

lib/linux/libc.c

@@ -38,6 +38,18 @@
 #define SYS_ioctl   0x36
 #define SYS_fsync   0x76
 
+#if __MESC__
+
+#include <linux/mes.c>
+
+#else // !__MESC__
+
+#include <assert.h>
+
+#include <linux/gcc.c>
+
+#endif // !__MESC__
+
 int
 fork ()
 {

lib/m4.c

@@ -20,15 +20,7 @@
 
 #include <ctype.h>
 
-int
+#include "stdlib/abort.c"
-abort ()
-{
-  static int stub = 0;
-  if (__mes_debug () && !stub)
-    eputs ("abort stub\n");
-  stub = 1;
-  return 0;
-}
 
 int
 atof (int x)

lib/stdlib/abort.c

@@ -0,0 +1,29 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * Mes --- Maxwell Equations of Software
+ * Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of Mes.
+ *
+ * Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+void
+abort (void)
+{
+#if __i386__
+  asm ("hlt");
+#else
+  asm ("break  0");
+#endif
+}

lib/stdlib/malloc.c

@@ -0,0 +1,33 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * Mes --- Maxwell Equations of Software
+ * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of Mes.
+ *
+ * Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+char *__brk = 0;
+
+void *
+malloc (size_t size)
+{
+  if (!__brk)
+    __brk = brk (0);
+  if (brk (__brk + size) == (void*)-1)
+    return 0;
+  char *p = __brk;
+  __brk += size;
+  return p;
+}

lib/string/argz-count.c

@@ -0,0 +1,44 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * GNU Mes --- Maxwell Equations of Software
+ * Copyright (C) 1995-2018 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Mes.
+ *
+ * GNU Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * GNU Mes 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 GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Taken from GNU C Library
+ * Routines for dealing with '\0' separated arg vectors.
+ * Written by Miles Bader <miles@gnu.ai.mit.edu>
+*/
+
+#include <argz.h>
+#include <string.h>
+
+/* Returns the number of strings in ARGZ.  */
+size_t
+__argz_count (const char *argz, size_t len)
+{
+  size_t count = 0;
+  while (len > 0)
+    {
+      size_t part_len = strlen(argz);
+      argz += part_len + 1;
+      len -= part_len + 1;
+      count++;
+    }
+  return count;
+}
+libc_hidden_def (__argz_count)
+weak_alias (__argz_count, argz_count)

lib/string/argz-extract.c

@@ -0,0 +1,42 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * GNU Mes --- Maxwell Equations of Software
+ * Copyright (C) 1995-2018 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Mes.
+ *
+ * GNU Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * GNU Mes 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 GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Taken from GNU C Library
+ * Routines for dealing with '\0' separated arg vectors.
+ * Written by Miles Bader <miles@gnu.org>
+*/
+
+#include <argz.h>
+
+/* Puts pointers to each string in ARGZ, plus a terminating 0 element, into
+   ARGV, which must be large enough to hold them all.  */
+void
+__argz_extract (const char *argz, size_t len, char **argv)
+{
+  while (len > 0)
+    {
+      size_t part_len = strlen (argz);
+      *argv++ = (char *) argz;
+      argz += part_len + 1;
+      len -= part_len + 1;
+    }
+  *argv = 0;
+}
+weak_alias (__argz_extract, argz_extract)

lib/string/memcpy.c

@@ -0,0 +1,29 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * Mes --- Maxwell Equations of Software
+ * Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of Mes.
+ *
+ * Mes 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 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Mes 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 Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+void *
+memcpy (void *dest, void const *src, size_t n)
+{
+  char* p = dest;
+  char const* q = src;
+  while (n--)
+    *p++ = *q++;
+  return dest;
+}