mescc: Mes C Library: Explode libc-mini.c. WIP

lib/linux/libc-mini.c

@@ -32,16 +32,4 @@
 #error arch not supported
 #endif
 
-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;
-}
+#include <posix/write.c>

lib/posix/write.c

@@ -0,0 +1,36 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * GNU Mes --- Maxwell Equations of Software
+ * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * 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/>.
+ */
+
+#include <errno.h>
+#include <mes/lib-mini.h>
+
+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/tests/mes/30-oputs.c

@@ -20,82 +20,6 @@
 
 #include <mes/lib-mini.h>
 
-#if 0
-#include <linux/x86_64/syscall.h>
-
-#define _write _xwrite
-#define write xwrite
-#define strlen xstrlen
-#define oputs xoputs
-
-#if __GNUC__
-#define SYS_write   "0x01"
-#define SYS_exit    "0x3c"
-
-ssize_t
-_write (int filedes, void const *buffer, size_t size)
-{
-  long r;
-  asm (
-       "mov     $"SYS_write",%%rax\n\t"
-       "mov     %1,%%rdi\n\t"
-       "mov     %2,%%rsi\n\t"
-       "mov     %3,%%rdx\n\t"
-       "syscall \n\t"
-       "mov     %%rax,%0\n\t"
-       : "=r" (r)
-       : "rm" (filedes), "rm" (buffer), "rm" (size)
-       : "rax", "rdi", "rsi", "rdx"
-       );
-  return r;
-}
-#else
-#define SYS_write   0x01
-#define SYS_exit    0x3c
-void
-_write (int filedes, void const *buffer, size_t size)
-{
-  asm ("mov____0x8(%rbp),%rdi !0x10");
-  asm ("mov____0x8(%rbp),%rsi !0x18");
-  asm ("mov____0x8(%rbp),%rdx !0x20");
-  asm ("mov____$i32,%rax SYS_write");
-
-  asm ("syscall");
-}
-#endif
-
-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;
-}
-
-size_t
-strlen (char const* s)
-{
-  int i = 0;
-  while (s[i])
-    i++;
-  return i;
-}
-
-int
-oputs (char const* s)
-{
-  int i = strlen (s);
-  write (1, s, i);
-  return 0;
-}
-#endif
-
 int
 main ()
 {