Add support for FT32 platform.

libgloss/ft32/sim-write.S

@@ -0,0 +1,56 @@
+/*
+ * sim-write.S -- write interface for FT32 simulator
+ *
+ * Copyright (C) 2015 FTDI (support@ftdichip.com)
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include "syscall.h"
+
+/*
+ * Input:
+ * $r0            -- File descriptor.
+ * $r1            -- String to be printed.
+ * $r2      -- Length of the string.
+ *
+ * Output:
+ * $r0          -- Length written or -1.
+ * errno  -- Set if an error
+ */
+
+        .globl        _write
+        .type        _write,@function
+        .weak        write
+        .text
+_write:
+write:
+
+#         LDI.l   $r1,$r0,0
+#         STA.l   MAGIC,$r1
+#         jmp     .f
+#
+# .loop:
+#         sta.l   0x10000,$r2
+#         add.l   $r0,$r0,1
+# .f:
+#         ldi.b   $r2,$r0,0
+#         cmp.b   $r2,0
+#         jmpc    nz,.loop
+
+        ldk.l   $r3,0x10000
+        streamout.b $r3,$r1,$r2
+        move.l  $r0,$r2
+
+        return
+
+.Lend:
+        .size        _write,.Lend-_write