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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/lib/gunzip.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/lib/gunzip.c')
-rw-r--r--qemu/roms/u-boot/lib/gunzip.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/lib/gunzip.c b/qemu/roms/u-boot/lib/gunzip.c
new file mode 100644
index 000000000..35abfb38e
--- /dev/null
+++ b/qemu/roms/u-boot/lib/gunzip.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2000-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <image.h>
+#include <malloc.h>
+#include <u-boot/zlib.h>
+
+#define ZALLOC_ALIGNMENT 16
+#define HEAD_CRC 2
+#define EXTRA_FIELD 4
+#define ORIG_NAME 8
+#define COMMENT 0x10
+#define RESERVED 0xe0
+#define DEFLATED 8
+
+void *gzalloc(void *x, unsigned items, unsigned size)
+{
+ void *p;
+
+ size *= items;
+ size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
+
+ p = malloc (size);
+
+ return (p);
+}
+
+void gzfree(void *x, void *addr, unsigned nb)
+{
+ free (addr);
+}
+
+int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
+{
+ int i, flags;
+
+ /* skip header */
+ i = 10;
+ flags = src[3];
+ if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
+ puts ("Error: Bad gzipped data\n");
+ return (-1);
+ }
+ if ((flags & EXTRA_FIELD) != 0)
+ i = 12 + src[10] + (src[11] << 8);
+ if ((flags & ORIG_NAME) != 0)
+ while (src[i++] != 0)
+ ;
+ if ((flags & COMMENT) != 0)
+ while (src[i++] != 0)
+ ;
+ if ((flags & HEAD_CRC) != 0)
+ i += 2;
+ if (i >= *lenp) {
+ puts ("Error: gunzip out of data in header\n");
+ return (-1);
+ }
+
+ return zunzip(dst, dstlen, src, lenp, 1, i);
+}
+
+/*
+ * Uncompress blocks compressed with zlib without headers
+ */
+int zunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp,
+ int stoponerr, int offset)
+{
+ z_stream s;
+ int r;
+
+ s.zalloc = gzalloc;
+ s.zfree = gzfree;
+
+ r = inflateInit2(&s, -MAX_WBITS);
+ if (r != Z_OK) {
+ printf ("Error: inflateInit2() returned %d\n", r);
+ return -1;
+ }
+ s.next_in = src + offset;
+ s.avail_in = *lenp - offset;
+ s.next_out = dst;
+ s.avail_out = dstlen;
+ do {
+ r = inflate(&s, Z_FINISH);
+ if (stoponerr == 1 && r != Z_STREAM_END &&
+ (s.avail_out == 0 || r != Z_BUF_ERROR)) {
+ printf("Error: inflate() returned %d\n", r);
+ inflateEnd(&s);
+ return -1;
+ }
+ s.avail_in = *lenp - offset - (int)(s.next_out - (unsigned char*)dst);
+ } while (r == Z_BUF_ERROR);
+ *lenp = s.next_out - (unsigned char *) dst;
+ inflateEnd(&s);
+
+ return 0;
+}