#include <stdarg.h>
#include <serial.h>
-static char *bf;
-static char zs;
+/*
+ * This code in here may execute before the DRAM is initialised, so
+ * we should make sure that it doesn't touch BSS, which some boards
+ * put in DRAM.
+ */
+static char *bf __attribute__ ((section(".data")));
+static char zs __attribute__ ((section(".data")));
+
+/* Current position in sprintf() output string */
+static char *outstr __attribute__ ((section(".data")));
static void out(char c)
{
out_dgt(dgt);
}
-int vprintf(const char *fmt, va_list va)
+int _vprintf(const char *fmt, va_list va, void (*putc)(const char ch))
{
char ch;
char *p;
if (ch != '%') {
putc(ch);
} else {
- char lz = 0;
- char w = 0;
+ bool lz = false;
+ int width = 0;
ch = *(fmt++);
if (ch == '0') {
}
if (ch >= '0' && ch <= '9') {
- w = 0;
+ width = 0;
while (ch >= '0' && ch <= '9') {
- w = (w * 10) + ch - '0';
+ width = (width * 10) + ch - '0';
ch = *fmt++;
}
}
zs = 0;
switch (ch) {
- case 0:
+ case '\0':
goto abort;
case 'u':
case 'd':
*bf = 0;
bf = p;
- while (*bf++ && w > 0)
- w--;
- while (w-- > 0)
+ while (*bf++ && width > 0)
+ width--;
+ while (width-- > 0)
putc(lz ? '0' : ' ');
if (p) {
while ((ch = *p++))
return 0;
}
+int vprintf(const char *fmt, va_list va)
+{
+ return _vprintf(fmt, va, putc);
+}
+
int printf(const char *fmt, ...)
{
va_list va;
int ret;
va_start(va, fmt);
- ret = vprintf(fmt, va);
+ ret = _vprintf(fmt, va, putc);
+ va_end(va);
+
+ return ret;
+}
+
+static void putc_outstr(char ch)
+{
+ *outstr++ = ch;
+}
+
+int sprintf(char *buf, const char *fmt, ...)
+{
+ va_list va;
+ int ret;
+
+ va_start(va, fmt);
+ outstr = buf;
+ ret = _vprintf(fmt, va, putc_outstr);
va_end(va);
+ *outstr = '\0';
return ret;
}
+
+/* Note that size is ignored */
+int snprintf(char *buf, size_t size, const char *fmt, ...)
+{
+ va_list va;
+ int ret;
+
+ va_start(va, fmt);
+ outstr = buf;
+ ret = _vprintf(fmt, va, putc_outstr);
+ va_end(va);
+ *outstr = '\0';
+
+ return ret;
+}
+
+void __assert_fail(const char *assertion, const char *file, unsigned line,
+ const char *function)
+{
+ /* This will not return */
+ printf("%s:%u: %s: Assertion `%s' failed.", file, line, function,
+ assertion);
+ hang();
+}