sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 93 insertions, 0 deletions

diff --git a/device/lib/strtol.c b/device/lib/strtol.c
new file mode 100644
index 0000000..3e7c00b
--- /dev/null
+++ b/device/lib/strtol.c
@@ -0,0 +1,93 @@
+/*---------------------------------------------------------------------
+   strtol() - convert a string to a long int and return it
+
+   Copyright (C) 2018, Philipp Klaus Krause . krauseph@informatik.uni-freiburg.de
+
+   This library 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 2, or (at your option) any
+   later version.
+
+   This library 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 this library; see the file COPYING. If not, write to the
+   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+
+   As a special exception, if you link this library with other files,
+   some of which are compiled with SDCC, to produce an executable,
+   this library does not by itself cause the resulting executable to
+   be covered by the GNU General Public License. This exception does
+   not however invalidate any other reasons why the executable file
+   might be covered by the GNU General Public License.
+-------------------------------------------------------------------------*/
+
+#include <stdlib.h>
+
+#include <stdbool.h>
+#include <ctype.h>
+#include <limits.h>
+#include <errno.h>
+
+#pragma disable_warning 196
+
+long int strtol(const char *nptr, char **endptr, int base)
+{
+  const char *ptr = nptr;
+  const char *rptr;
+  unsigned long int u;
+  bool neg;
+
+  while (isblank (*ptr))
+    ptr++;
+
+  neg = (*ptr == '-');
+
+  if (*ptr == '-')
+    {
+      neg = true;
+      ptr++;
+    }
+  else
+    neg = false;
+
+  // strtoul() would accept leading blanks or signs (that might come after '-' handled above)
+  if (neg && (isblank (*ptr) || *ptr == '-' || *ptr == '+'))
+    {
+      if (endptr)
+        *endptr = nptr;
+      return (0);
+    }
+
+  u = strtoul(ptr, &rptr, base);
+
+  // Check for conversion error
+  if (rptr == ptr)
+    {
+      if (endptr)
+        *endptr = nptr;
+      return (0);
+    }
+
+  if (endptr)
+    *endptr = rptr;
+
+  // Check for range error
+  if (!neg && u > LONG_MAX)
+    {
+      errno = ERANGE;
+      return (LONG_MAX);
+    }
+  else if (neg && u > -LONG_MIN)
+    {
+      errno = ERANGE;
+      return (LONG_MIN);
+    }
+
+  return (neg ? -u : u);
+}
+