[xen staging] tools/libxenguest: fix build in stubdom environment

[patchbot@xxxxxxx]

commit 448826d95dc487661a7ec1f11e08bb5c5f904334
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Mon Jun 30 10:05:42 2025 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Jun 30 10:05:42 2025 +0200

    tools/libxenguest: fix build in stubdom environment
    
    With introduction of the new byteswap infrastructure the build of
    libxenguest for stubdoms was broken. Fix that again.
    
    Fixes: 60dcff871e34 ("xen/decompressors: Remove use of *_to_cpup() helpers")
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
    Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 tools/libs/guest/xg_dom_decompress_unsafe_lzo1x.c | 9 +++++++++
 tools/libs/guest/xg_dom_decompress_unsafe_xz.c    | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/libs/guest/xg_dom_decompress_unsafe_lzo1x.c 
b/tools/libs/guest/xg_dom_decompress_unsafe_lzo1x.c
index ca2f37d915..356f228718 100644
--- a/tools/libs/guest/xg_dom_decompress_unsafe_lzo1x.c
+++ b/tools/libs/guest/xg_dom_decompress_unsafe_lzo1x.c
@@ -25,6 +25,15 @@ static inline uint16_t be16_to_cpu(const uint16_t v)
 #endif
 }
 
+static inline uint32_t be32_to_cpu(const uint32_t v)
+{
+#if BYTE_ORDER == LITTLE_ENDIAN
+       return __builtin_bswap32(v);
+#else
+       return v;
+#endif
+}
+
 #include "../../xen/common/lzo.c"
 #include "../../xen/common/unlzo.c"
 
diff --git a/tools/libs/guest/xg_dom_decompress_unsafe_xz.c 
b/tools/libs/guest/xg_dom_decompress_unsafe_xz.c
index 1f52875340..0501f7f693 100644
--- a/tools/libs/guest/xg_dom_decompress_unsafe_xz.c
+++ b/tools/libs/guest/xg_dom_decompress_unsafe_xz.c
@@ -25,7 +25,7 @@ static inline uint32_t cpu_to_le32(const uint32_t v)
 #endif
 }
 
-static inline uint32_t le32_to_cpu(const uint32_t p)
+static inline uint32_t le32_to_cpu(const uint32_t v)
 {
 #if BYTE_ORDER == BIG_ENDIAN
        return __builtin_bswap32(v);
--
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