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authorJosh Blum <josh@joshknows.com>2010-02-10 11:57:58 -0800
committerJosh Blum <josh@joshknows.com>2010-02-10 11:57:58 -0800
commitd088a11bf7c257ba45bf0c37a41e5038b302bc44 (patch)
tree8bbb4d90285a181c603c117de4504e73066afe48 /firmware/microblaze/lib/printf.c.smaller
parente2044e13ec4ad94e9739402257134abd92cf1521 (diff)
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Copied a snapshot of the usrp2 firmware into the microblaze firmware directory in the uhd repo.
Added erllc copyrights to the files created and modified at erllc.
Diffstat (limited to 'firmware/microblaze/lib/printf.c.smaller')
-rw-r--r--firmware/microblaze/lib/printf.c.smaller134
1 files changed, 134 insertions, 0 deletions
diff --git a/firmware/microblaze/lib/printf.c.smaller b/firmware/microblaze/lib/printf.c.smaller
new file mode 100644
index 000000000..4d858648d
--- /dev/null
+++ b/firmware/microblaze/lib/printf.c.smaller
@@ -0,0 +1,134 @@
+/* -*- c -*- */
+/*
+ * Copyright 2007 Free Software Foundation, Inc.
+ *
+ * This program 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.
+ *
+ * This program 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 program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Based on code from the SDCC z80 library ;)
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <hal_io.h> /* FIXME refactor into stdio */
+
+#define PUTCHAR(x) hal_putc(x)
+
+
+static void
+_printn(unsigned u, unsigned base, char issigned)
+{
+ const char *_hex = "0123456789ABCDEF";
+ if (issigned && ((int)u < 0)) {
+ PUTCHAR('-');
+ u = (unsigned)-((int)u);
+ }
+ if (u >= base)
+ _printn(u/base, base, 0);
+ PUTCHAR(_hex[u%base]);
+}
+
+static void
+_printf(const char *format, va_list va)
+{
+ while (*format) {
+ if (*format != '%')
+ PUTCHAR(*format);
+ else {
+ switch (*++format) {
+ case 0: /* hit end of format string */
+ return;
+ case 'c':
+ {
+ char c = (char)va_arg(va, int);
+ PUTCHAR(c);
+ break;
+ }
+ case 'u':
+ {
+ unsigned u = va_arg(va, unsigned);
+ _printn(u, 10, 0);
+ break;
+ }
+ case 'd':
+ {
+ unsigned u = va_arg(va, unsigned);
+ _printn(u, 10, 1);
+ break;
+ }
+ case 'x':
+ case 'p':
+ {
+ unsigned u = va_arg(va, unsigned);
+ _printn(u, 16, 0);
+ break;
+ }
+ case 's':
+ {
+ char *s = va_arg(va, char *);
+ while (*s) {
+ PUTCHAR(*s);
+ s++;
+ }
+ break;
+ }
+ }
+ }
+ format++;
+ }
+}
+
+#if 0
+static void
+_char_emitter(char c, void *pData __attribute__((unused)))
+{
+ hal_putc(c);
+}
+#endif
+
+int
+printf(const char *format, ...)
+{
+ va_list va;
+ va_start(va, format);
+
+ _printf(format, va);
+
+ // wrong return value...
+ return 0;
+}
+
+
+#if 0
+
+// Totally dangerous. Don't use
+static void
+_buf_emitter(char c, void *pData)
+{
+ *((*((char **)pData)))++ = c;
+}
+
+int sprintf(char *pInto, const char *format, ...)
+{
+ va_list va;
+ va_start(va, format);
+
+ _printf(format, _buf_emitter, &pInto, va);
+ *pInto++ = '\0';
+
+ // FIXME wrong return value
+ return 0;
+}
+#endif