libmicrohttpd2

commit 4b834afcd19940420d11d3d609e11c787cf11a4f
parent fa3e0e79b98599bedd42d5a26c7fa23ea06802e3
Author: Evgeny Grin (Karlson2k) <k2k@drgrin.dev>
Date:   Sun,  2 Nov 2025 19:26:14 +0100

mhd_bithelpers.h: added 32bit BE get/put for unaligned addresses

Diffstat:
M
src/mhd2/mhd_bithelpers.h
 | 
28
++++++++++++++++++++++++++++

1 file changed, 28 insertions(+), 0 deletions(-)
diff --git a/src/mhd2/mhd_bithelpers.h b/src/mhd2/mhd_bithelpers.h
@@ -464,6 +464,19 @@ mhd_PUT_32BIT_BE(void *addr, uint32_t value32)
 #  define mhd_PUT_32BIT_BE_ALLOW_UNALIGNED 1
 #endif /* mhd_BYTE_ORDER != mhd_LITTLE_ENDIAN */
 
+/* Put result safely to unaligned address */
+#ifdef mhd_PUT_32BIT_BE_ALLOW_UNALIGNED
+#  define mhd_PUT_32BIT_BE_UNALIGN(addr, value32)        \
+        mhd_PUT_32BIT_BE ((addr),(value32))
+#else  /* ! mhd_PUT_32BIT_BE_ALLOW_UNALIGNED */
+#  define mhd_PUT_32BIT_BE_UNALIGN(addr, value32)           \
+        do { uint32_t mhd__aligned_dst;                      \
+             mhd_PUT_32BIT_BE (&mhd__aligned_dst, (value32)); \
+             memcpy ((addr), &mhd__aligned_dst,               \
+                     sizeof(mhd__aligned_dst)); } while (0)
+#endif /* ! mhd_PUT_32BIT_BE_ALLOW_UNALIGNED */
+
+
 /* mhd_GET_32BIT_BE (addr)
  * get big-endian 32-bit value stored at addr
  * and return it in native-endian mode.
@@ -491,6 +504,21 @@ mhd_GET_32BIT_BE(const void *addr)
 #  define mhd_GET_32BIT_BE_ALLOW_UNALIGNED 1
 #endif /* mhd_BYTE_ORDER != mhd_LITTLE_ENDIAN */
 
+#ifdef mhd_GET_32BIT_BE_ALLOW_UNALIGNED
+#  define mhd_GET_32BIT_BE_UNALIGN(addr) mhd_GET_32BIT_BE ((addr))
+#else  /* ! mhd_GET_32BIT_LE_ALLOW_UNALIGNED */
+/* Get value safely from an unaligned address */
+mhd_static_inline MHD_FN_PAR_NONNULL_ALL_ uint32_t
+mhd_GET_32BIT_BE_UNALIGN (const void *addr)
+{
+  uint32_t aligned_src;
+  memcpy (&aligned_src,
+          addr,
+          sizeof(aligned_src));
+  return mhd_GET_32BIT_BE (&aligned_src);
+}
+#endif /* ! mhd_GET_32BIT_BE_ALLOW_UNALIGNED */
+
 
 /* mhd_PUT_UINTFAST32_BE(addr, uif32)
  * Put uint_fast32_t value to the addr in big endian mode.