Check in a pristine copy of GCC 4.8.1.

The copy of GCC that we use for Android is still not working for
mingw. Rather than finding all the differences that have crept into
our GCC, just check in a copy from
ftp://ftp.gnu.org/gnu/gcc/gcc-4.9.3/gcc-4.8.1.tar.bz2.

GCC 4.8.1 was chosen because it is what we have been using for mingw
thus far, and the emulator doesn't yet work when upgrading to 4.9.

Bug: http://b/26523949
Change-Id: Iedc0f05243d4332cc27ccd46b8a4b203c88dcaa3

1 files changed, 85 insertions, 0 deletions

diff --git a/gcc-4.8.1/libgo/runtime/go-int-array-to-string.c b/gcc-4.8.1/libgo/runtime/go-int-array-to-string.c
new file mode 100644
index 000000000..6cae2fd8c
--- /dev/null
+++ b/gcc-4.8.1/libgo/runtime/go-int-array-to-string.c
@@ -0,0 +1,85 @@
+/* go-int-array-to-string.c -- convert an array of ints to a string in Go.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include "go-assert.h"
+#include "runtime.h"
+#include "arch.h"
+#include "malloc.h"
+
+String
+__go_int_array_to_string (const void* p, intgo len)
+{
+  const int32 *ints;
+  intgo slen;
+  intgo i;
+  unsigned char *retdata;
+  String ret;
+  unsigned char *s;
+
+  ints = (const int32 *) p;
+
+  slen = 0;
+  for (i = 0; i < len; ++i)
+    {
+      int32 v;
+
+      v = ints[i];
+
+      if (v < 0 || v > 0x10ffff)
+	v = 0xfffd;
+
+      if (v <= 0x7f)
+	slen += 1;
+      else if (v <= 0x7ff)
+	slen += 2;
+      else if (v <= 0xffff)
+	slen += 3;
+      else
+	slen += 4;
+    }
+
+  retdata = runtime_mallocgc ((uintptr) slen, FlagNoPointers, 1, 0);
+  ret.str = retdata;
+  ret.len = slen;
+
+  s = retdata;
+  for (i = 0; i < len; ++i)
+    {
+      int32 v;
+
+      v = ints[i];
+
+      /* If V is out of range for UTF-8, substitute the replacement
+	 character.  */
+      if (v < 0 || v > 0x10ffff)
+	v = 0xfffd;
+
+      if (v <= 0x7f)
+	*s++ = v;
+      else if (v <= 0x7ff)
+	{
+	  *s++ = 0xc0 | ((v >> 6) & 0x1f);
+	  *s++ = 0x80 | (v & 0x3f);
+	}
+      else if (v <= 0xffff)
+	{
+	  *s++ = 0xe0 | ((v >> 12) & 0xf);
+	  *s++ = 0x80 | ((v >> 6) & 0x3f);
+	  *s++ = 0x80 | (v & 0x3f);
+	}
+      else
+	{
+	  *s++ = 0xf0 | ((v >> 18) & 0x7);
+	  *s++ = 0x80 | ((v >> 12) & 0x3f);
+	  *s++ = 0x80 | ((v >> 6) & 0x3f);
+	  *s++ = 0x80 | (v & 0x3f);
+	}
+    }
+
+  __go_assert (s - retdata == slen);
+
+  return ret;
+}