oops, manditory forgotten patch

1 files changed, 131 insertions, 0 deletions

diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c
index cef44965e..5a1c89230 100644
--- a/ldso/ldso/dl-elf.c
+++ b/ldso/ldso/dl-elf.c
@@ -793,3 +793,134 @@ int _dl_fixup(struct dyn_elf *rpnt, int flag)
 	return goof;
 }
 
+/* Minimal printf which handles only %s, %d, and %x */
+void _dl_dprintf(int fd, const char *fmt, ...)
+{
+	int num;
+	va_list args;
+	char *start, *ptr, *string;
+	static char *buf;
+
+	buf = _dl_mmap((void *) 0, PAGE_SIZE, PROT_READ | PROT_WRITE,
+			MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+	if (_dl_mmap_check_error(buf)) {
+		_dl_write(fd, "mmap of a spare page failed!\n", 29);
+		_dl_exit(20);
+	}
+
+	start = ptr = buf;
+
+	if (!fmt)
+		return;
+
+	if (_dl_strlen(fmt) >= (PAGE_SIZE - 1)) {
+		_dl_write(fd, "overflow\n", 11);
+		_dl_exit(20);
+	}
+
+	_dl_strcpy(buf, fmt);
+	va_start(args, fmt);
+
+	while (start) {
+		while (*ptr != '%' && *ptr) {
+			ptr++;
+		}
+
+		if (*ptr == '%') {
+			*ptr++ = '\0';
+			_dl_write(fd, start, _dl_strlen(start));
+
+			switch (*ptr++) {
+				case 's':
+					string = va_arg(args, char *);
+
+					if (!string)
+						_dl_write(fd, "(null)", 6);
+					else
+						_dl_write(fd, string, _dl_strlen(string));
+					break;
+
+				case 'i':
+				case 'd':
+					{
+						char tmp[22];
+						num = va_arg(args, int);
+
+						string = _dl_simple_ltoa(tmp, num);
+						_dl_write(fd, string, _dl_strlen(string));
+						break;
+					}
+				case 'x':
+				case 'X':
+					{
+						char tmp[22];
+						num = va_arg(args, int);
+
+						string = _dl_simple_ltoahex(tmp, num);
+						_dl_write(fd, string, _dl_strlen(string));
+						break;
+					}
+				default:
+					_dl_write(fd, "(null)", 6);
+					break;
+			}
+
+			start = ptr;
+		} else {
+			_dl_write(fd, start, _dl_strlen(start));
+			start = NULL;
+		}
+	}
+	_dl_munmap(buf, PAGE_SIZE);
+	return;
+}
+
+char *_dl_strdup(const char *string)
+{
+	char *retval;
+	int len;
+
+	len = _dl_strlen(string);
+	retval = _dl_malloc(len + 1);
+	_dl_strcpy(retval, string);
+	return retval;
+}
+
+void *(*_dl_malloc_function) (size_t size) = NULL;
+void *_dl_malloc(int size)
+{
+	void *retval;
+
+#if 0
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
+	_dl_dprintf(2, "malloc: request for %d bytes\n", size);
+#endif
+#endif
+
+	if (_dl_malloc_function)
+		return (*_dl_malloc_function) (size);
+
+	if (_dl_malloc_addr - _dl_mmap_zero + size > PAGE_SIZE) {
+#ifdef __SUPPORT_LD_DEBUG_EARLY__
+		_dl_dprintf(2, "malloc: mmapping more memory\n");
+#endif
+		_dl_mmap_zero = _dl_malloc_addr = _dl_mmap((void *) 0, size,
+				PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+		if (_dl_mmap_check_error(_dl_mmap_zero)) {
+			_dl_dprintf(2, "%s: mmap of a spare page failed!\n", _dl_progname);
+			_dl_exit(20);
+		}
+	}
+	retval = _dl_malloc_addr;
+	_dl_malloc_addr += size;
+
+	/*
+	 * Align memory to 4 byte boundary.  Some platforms require this, others
+	 * simply get better performance.
+	 */
+	_dl_malloc_addr = (unsigned char *) (((unsigned long) _dl_malloc_addr + 3) & ~(3));
+	return retval;
+}
+
+
+