Move get_unaligned_le32() macros to platform.h

[oweals/busybox.git] / archival / libarchive / decompress_unxz.c

diff --git a/archival/libarchive/decompress_unxz.c b/archival/libarchive/decompress_unxz.c
index 1f408abfd4a2e85b0dbab4ea0d55bcf80cafefaf..350e5358a6fa62eb3f8a7443161550fc6e9a6a15 100644 (file)
--- a/archival/libarchive/decompress_unxz.c
+++ b/archival/libarchive/decompress_unxz.c
@@ -27,11 +27,17 @@ static uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc)
        return ~crc32_block_endian0(~crc, buf, size, global_crc32_table);
 }
 
-/* We use arch-optimized unaligned accessors */
-#define get_unaligned_le32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_LE32(v); })
-#define get_unaligned_be32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_BE32(v); })
-#define put_unaligned_le32(val, buf) move_to_unaligned32(buf, SWAP_LE32(val))
-#define put_unaligned_be32(val, buf) move_to_unaligned32(buf, SWAP_BE32(val))
+/* We use arch-optimized unaligned fixed-endian accessors.
+ * They have been moved to libbb (proved to be useful elsewhere as well),
+ * just check that we have them defined:
+ */
+#if !defined(get_unaligned_le32) \
+ || !defined(get_unaligned_be32) \
+ || !defined(put_unaligned_le32) \
+ || !defined(put_unaligned_be32)
+# error get_unaligned_le32 accessors are not defined
+#endif
+#define get_le32(p) (*(uint32_t*)(p))
 
 #include "unxz/xz_dec_bcj.c"
 #include "unxz/xz_dec_lzma2.c"
@@ -55,7 +61,7 @@ unpack_xz_stream(transformer_state_t *xstate)
        iobuf.out = membuf + BUFSIZ;
        iobuf.out_size = BUFSIZ;
 
-       if (!xstate || xstate->check_signature == 0) {
+       if (!xstate || xstate->signature_skipped) {
                /* Preload XZ file signature */
                strcpy((char*)membuf, HEADER_MAGIC);
                iobuf.in_size = HEADER_MAGIC_SIZE;